Non-linear associations between cardiovascular metabolic indices and metabolic-associated fatty liver disease: A cross-sectional study in the US population (2017–2020)
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Meimei Xu
Abstract
The cardiometabolic index (CMI) is an emerging and effective indicator for predicting the presence of metabolic-associated fatty liver disease (MAFLD). This study aims to investigate the relationship between CMI and MAFLD using data from NHANES 2017–2020. In this cross-sectional study, a total of 3,749 subjects were included. The study conducted a thorough analysis of CMI with three multivariate logistic regression models, subgroup analyses, and restricted cubic splines (RCS) were utilized. Using multifactorial logistic regression as the primary method of analysis, we found that a higher CMI was also significantly associated with an increased risk of MAFLD (OR = 1.45, 95% CI (1.05–2.01)). This result was further visualized by the RCS curve: There was a non-linear positive correlation between CMI and MAFLD incidence (the turning point is CMI = 0.4554). These findings were strongly reinforced by subsequent subgroup and sensitivity analyses. There is a robust positive relationship between the CMI and the risk of MAFLD, providing valuable clinical benefits for early detection and screening of MAFLD. It is important to highlight the presence of a non-linear association between CMI and MAFLD, with an inflection point identified at CMI = 0.4554.
1 Introduction
Metabolic-associated fatty liver disease (MAFLD) is a prevalent global health issue affecting over one-third of the world’s population, with rates ranging from 32.94 to 44.95% [1,2]. It is characterized by excessive fat accumulation in the liver and metabolic dysfunction, demonstrated by symptoms of overweight or obesity and insulin resistance [3]. In 2020, an international expert panel confidently recommended replacing the term “non-alcoholic fatty liver disease” with “MAFLD.” This decisive change offers a broader perspective by encompassing various causes of fatty liver diseases and makes it easier to identify individuals at risk of developing liver conditions [4,5,6]. MAFLD is strongly associated with the development of hepatocellular carcinoma and cirrhosis, and it significantly increases the likelihood of cardiovascular diseases [7]. Therefore, prompt diagnosis and early intervention are crucial to effectively alleviate the burden of MAFLD.
Liver biopsy is considered the “gold standard” for diagnosing MAFLD [8]. However, its use in clinical practice is limited due to its invasiveness, complexity, cost, and challenges with patient compliance. Although ultrasound is a common diagnostic tool, mild steatosis is rare and can be influenced by equipment quality and operator skill [8]. Conversely, computed tomography has good diagnostic sensitivity, but it is limited by radiation exposure. Magnetic resonance imaging (MRI) is the preferred method for assessing liver fat content in clinical and research settings due to its non-invasive, precise, and reproducible nature. Although MRI may have some specificity issues and can be expensive, it remains the most reliable option available [8,9]. To detect MAFLD early, it is essential to investigate a low-cost, practical, and straightforward secondary diagnostic tool. Hepatic steatosis, a key feature of MAFLD [10], is characterized by an excess buildup of triglycerides and cholesterol in hepatocyte lipid droplets caused by the accumulation of visceral fat. However, central obesity and insulin resistance are primarily associated with visceral fat buildup and hepatic steatosis [11]. Body fat indicators such as body mass index (BMI), waist circumference, waist-to-height ratio, transaminases, fatty acids, serum triglyceride, total cholesterol (TG), high-density lipoprotein cholesterol (HDL-C), and the TG/HDL-C ratio are crucial in evaluating MAFLD due to their strong correlation with the condition [12,13]. The TG/HDL-C ratio predicts non-alcoholic fatty liver disease and is associated with insulin resistance, abdominal obesity, metabolic disturbances, and cardiometabolic risks [14].
The cardiometabolic index (CMI) is a highly effective method for assessing the distribution and dysfunction of visceral fat [15]. Numerous studies have demonstrated the high predictive power of CMI for MAFLD in both Chinese [16] and US [17] populations. CMI was found to be an effective tool for assessing the risk of NAFLD in patients with T2D, who are at elevated risk for liver-related complications [18]. Furthermore, CMI was identified as an effective monitoring method, a finding that was corroborated by a longitudinal cohort study from China [19].
Therefore, CMI is a reliable and valuable tool for assessing MAFLD risk. Numerous studies have demonstrated the high predictive power of CMI for MAFLD in both Chinese [16,18,19] and US populations [17]. Although there is a lack of relevant research, the findings suggest that CMI has potential clinical use, and further evidence is needed to support this claim. This study aims to comprehensively explore the link between CMI and MAFLD using a large sample of adults in the United States.
2 Methods and materials
2.1 Study population
The NHANES database is an annual nationwide survey that has been conducted on the nutrition and health of the US population since 1999. It utilizes sophisticated sampling methods, including multistage and stratified sampling, to specifically target minors and older adults. For more detailed information, you can visit the official website at https://www.cdc.gov/nchs/nhanes/index.htm. This website offers a comprehensive overview of the NHANES survey design, which received approval from the National Center for Health Statistics Ethical Review Board before data collection, with all participants providing informed consent. The survey included household questionnaires, telephone interviews, and physical examinations carried out by medical professionals and trained staff to gather data. Data for this cross-sectional study were extracted from the NHANES database covering the years 2017 to 2020. Exclusions were made for 6,328 participants under the age of 20,1310 participants with missing median cap data, 1,177 participants with missing waist data, 14 participants with missing height data, and 4,292 participants with missing triglyceride data. In total, a total of 3,749 individuals were included in this study (Figure 1).

Flowchart of the sample selection from NHANES 2017–2020.
2.2 CMI
The CMI was calculated using blood samples collected along with anthropometric measurements. Stringent laboratory tests and assessments of key indicators were carried out in accordance with standardized sampling procedures to ensure the accuracy and consistency of the data. Blood samples were usually gathered either on survey vehicles or at assigned collection points, then processed and analyzed in the laboratory. Certified healthcare professionals measurede participants’ height and waist circumference at mobile screening facilities [20].
2.3 MAFLD
MAFLD is diagnosed if transient elastography shows hepatic steatosis together with one of the following: metabolic abnormalities, type 2 diabetes, or overweight/obesity [21]. Significant hepatic steatosis is indicated by a controlled attenuation parameter (CAP) exceeding 248 dB/m [22,23]; CAP is widely used worldwide as a tool to assess the degree of fatty liver degeneration [23]. A BMI above 25 kg/m2 indicates overweight or obesity, while diabetes is diagnosed with an FBG level of 7.0 mmol/L, a glycosylated hemoglobin level of 6.5%, a confirmed diagnosis by healthcare providers, or the use of diabetes medication. Metabolic abnormalities are diagnosed in lean or normal-weight individuals when two or more of the following factors are present: (1) waist circumference over 102 cm for males or 88 cm for females; (2) blood pressure of 130/85 mmHg or taking antihypertensive medication; and (3) serum triglyceride levels exceeding 150 mg/dL (or 1–70 mmol/L) or receiving specific drug therapy. (4) Low levels of HDL-C are defined as <40 mg/dL for males and <50 mg/dL for females or if the patient is receiving specific medication. (5) Pre-diabetes is indicated by FPG levels between 100 and 125 mg/dL. An individual is considered to have pre-diabetes if their fasting plasma glucose (FPG) levels are between 100 and 125 mg/dL, or if post-load blood glucose levels are between 140 and 199 mg/dL 2 h after ingestion, or if HbA1c levels are between 5 and 7%, or if the homeostasis model assessment of insulin resistance score is above 2, or if high-sensitivity C-reactive protein (HsCRP) is elevated (>2 mg/l).
2.4 Covariates
The covariates considered in this study were gender, age, race, education level, marital, poverty-to-income ratio (PIR), alcohol consumption, smoking, physical activity (PA), diabetes, hypertension, and depression. Additionally, median capillary blood glucose levels, and serum uric acid (SUA) levels were measured along with fasting blood glucose levels and glycosylated hemoglobin. Homeostasis model assessment of insulin resistance (HOMA-IR) and serum urea nitrogen were also assessed.
Race categories included non-Hispanic white, non-Hispanic black, Mexican American, other Hispanic, and other racial groups. Education level was categorized as less than high school or high school and above. Marital status was divided into married and unmarried individuals. PIR was defined as low level (PIR < 1.30), medium level (1.30 ≤ PIR < 3.50), and high level (≥3.50) [24]. Nondrinkers were defined as individuals who had not consumed alcohol in the past 12 months or throughout their lifetime. Smokers were defined as those who had smoked more than 100 cigarettes in their lifetime. PA was classified as low (<600 min/week), moderate (600–8,000 min/week), and high (≥8,000 min/week) based on metabolic equivalent task minutes per week [25]. Hypertension was defined as systolic blood pressure (SBP) ≥130 mmHg, diastolic blood pressure (DBP) ≥80 mmHg, self-reported hypertension or use of antihypertensive medications, or a physician’s diagnosis of hypertension. Depression severity was assessed using the Patient Health Questionnaire-9, a reliable measure that evaluates the frequency of depressive symptoms over the past 2 weeks. The questionnaire consists of nine questions scored from “0” to “3,” with a total score ranging from 0 to 27. A score of 10 or higher indicates the presence of depression [26].
The laboratory tests also encompassed alanine aminotransferase (ALT), aspartate aminotransferase (AST), blood urea nitrogen (BUN), uric acid, serum potassium, serum iron, serum globulin, and red blood cell distribution width. The physical examination comprised SBP, DBP, BMI, waist circumference, and waist-to-height ratio.
2.5 Statistical methods
Continuous variables are presented as mean with standard deviation (SD). Categorical variables are shown as frequencies or percentages. Baseline characteristics were analyzed using the t-test or one-way analysis of variance for continuous variables, and the chi-square test or Fisher’s exact test for categorical variables. Missing values were managed by simple replacement. In categorical variables, missing values were identified as unknown. The mean value was used for filling in missing values following a normal distribution. In cases of skewed distribution of missing values, the mode was employed for replacement. Moreover, sensitivity analyses were carried out by conducting analyses with all missing values excluded (Table S1) and multiple imputations of missing values (Table S2) to ensure the robustness of our findings, which are detailed in the Supplementary Material. Logistic regression analysis was used to investigate the association between CMI and MAFLD. The results were reported as the odds ratio and corresponding 95% confidence interval. Important variables from univariate and multivariate logistic regression were included for covariate screening.
Logistic regression analysis was used to investigate the association between the CMI and MAFLD. The study reported the results in terms of odds ratios and 95% confidence intervals, which shows the level of confidence in the results. Covariates were selected based on their significance in univariate logistic regression analysis as well as clinical expertise. The covariates considered included age, gender, race, education status, marital status, PIR, alcohol status, smoking status, PA, diabetes status, hypertension status, depression status, median cap, SUA levels, FPG, HbA1c, homeostasis model assessment of insulin resistance, and serum urea nitrogen (BUN) levels.
In the multivariate logistic regression analysis, categorical variables were transformed into quartiles to further explore the association between CMI and the occurrence of MAFLD. The first model served as the initial unadjusted model, while the second model was adjusted for various factors, including age, race, gender, education status, PIR, marital status, alcohol consumption status, smoking status, PA, diabetes status, hypertension status, and depression status.
Moreover, the third model included further adjustments for median cap, SUA, FPG, HbA1c, HOMA-IR, and BUN building upon the second model. Restricted cubic splines were used to confidently explore the potential non-linear correlation between CMI and the occurrence of MAFLD. The evaluation of linearity and investigation of any curvilinear relationship between CMI and MAFLD were conducted while considering the variables in the third model. The association threshold between CMI and MAFLD was determined through an analysis that utilized smoothing techniques in a two-segment logistic regression model. The third model was adjusted for these variables. The inflection point was identified through likelihood ratio tests and bootstrap regression analysis.
Subgroup analyses were performed to evaluate the strength of the results by considering various factors such as gender, age, race, alcohol consumption, smoking, diabetes, hypertension, depression, and BMI. Additionally, the potential impact of variables such as gender, age, marital status, education level, drinking status, smoking status, diabetes status, hypertension status, depression status, and BMI on the relationship between CMI and MAFLD was assessed. Multivariate logistic regression analysis was used to assess heterogeneity between subgroups, and likelihood ratio tests were used to assess interactions between subgroups and CMI.
The statistical software R 3.3.2 was utilized for the analyses, in addition to Free Statistics software version 1.9 and www.R-project.org. The descriptive study encompassed all participants, and statistical significance was assessed using a two-tailed test with a p-value threshold of <0.05.
3 Results
3.1 Characteristics of participants
In total, 3,749 participants participated in the trial, with an average age of 52 years and 48.5% male. Among the participants, 12.8% were Mexican American, 10.2% were of Other Hispanic descent, and 33.9% were Non-Hispanic White. Non-Hispanic blacks made up 25.3% of the group. The overall prevalence of MAFLD was determined to be 55.5%. Table 1 displays the baseline characteristics of the groups stratified by MAFLD. Patients with MAFLD, when compared to those without, were generally older and more likely to be male. They also had a higher frequency of being married and smoking, as well as a greater prevalence of hypertension and depression. Additionally, their SBP, DBP, SUA, BMI, waist circumference, WtHR, HbA1c, hs-CRP, HOMA-IR, ALT, AST, and BUN levels were all significantly higher compared to individuals without MAFLD (all p < 0.05).
Basic characteristics of study participants
Variables | Total (n = 3,749) | Non-MAFLD(n = 1,667) | MAFLD (n = 2,082) | p |
---|---|---|---|---|
Gender | <0.001 | |||
Male | 1,820 (48.5) | 743 (44.6) | 1,077 (51.7) | |
Female | 1,929 (51.5) | 924 (55.4) | 1,005 (48.3) | |
Race | <0.001 | |||
Mexican American | 481 (12.8) | 161 (9.7) | 320 (15.4) | |
Other Hispanic | 381 (10.2) | 158 (9.5) | 223 (10.7) | |
Non-Hispanic White | 1,272 (33.9) | 525 (31.5) | 747 (35.9) | |
Non-Hispanic Black | 947 (25.3) | 501 (30.1) | 446 (21.4) | |
Other | 668 (17.8) | 322 (19.3) | 346 (16.6) | |
PIR | 0.326 | |||
Low | 873 (23.3) | 402 (24.1) | 471 (22.6) | |
Middle | 1,305 (34.8) | 554 (33.2) | 751 (36.1) | |
High | 1,071 (28.6) | 483 (29) | 588 (28.2) | |
Education | 0.12 | |||
<High school | 709 (18.9) | 294 (17.6) | 415 (19.9) | |
≥High school | 3,038 (81.0) | 1,372 (82.3) | 1,666 (80) | |
Married | <0.001 | |||
No | 1,526 (40.7) | 751 (45.1) | 775 (37.2) | |
Yes | 2,219 (59.2) | 914 (54.8) | 1,305 (62.7) | |
Alcohol | 0.105 | |||
No | 3,395 (90.6) | 1,524 (91.4) | 1,871 (89.9) | |
Yes | 354 (9.4) | 143 (8.6) | 211 (10.1) | |
PA | 0.366 | |||
Low | 463 (12.3) | 198 (11.9) | 265 (12.7) | |
Middle | 1,682 (44.9) | 749 (44.9) | 933 (44.8) | |
High | 676 (18.0) | 319 (19.1) | 357 (17.1) | |
Smoke | 0.02 | |||
No | 2,133 (56.9) | 986 (59.1) | 1,147 (55.1) | |
Yes | 1,614 (43.1) | 680 (40.8) | 934 (44.9) | |
Hypertension | <0.001 | |||
No | 1,647 (43.9) | 925 (55.5) | 722 (34.7) | |
Yes | 2,102 (56.1) | 742 (44.5) | 1,360 (65.3) | |
Diabetes | 0.083 | |||
No | 1,293 (34.5) | 600 (36) | 693 (33.3) | |
Yes | 2,456 (65.5) | 1,067 (64) | 1,389 (66.7) | |
Depression | 0.013 | |||
No | 2,828 (75.4) | 1,290 (77.4) | 1,538 (73.9) | |
Yes | 921 (24.6) | 377 (22.6) | 544 (26.1) | |
Median CAP (dB/m) | 265.8 ± 60.9 | 213.4 ± 35.6 | 307.7 ± 41.4 | <0.001 |
SBP (mmHg) | 123.8 ± 18.2 | 121.3 ± 18.6 | 125.7 ± 17.7 | <0.001 |
DBP (mmHg) | 74.3 ± 11.1 | 72.3 ± 10.9 | 75.9 ± 10.9 | <0.001 |
K+ (mmol/L) | 4.1 ± 0.4 | 4.1 ± 0.4 | 4.1 ± 0.4 | 0.002 |
SUA (mg/dL) | 5.4 ± 1.5 | 5.1 ± 1.4 | 5.7 ± 1.4 | <0.001 |
CMI | 0.5 (0.3, 0.8) | 0.3 (0.2, 0.5) | 0.6 (0.4, 1.0) | <0.001 |
Age | 52.0 (36.0, 64.0) | 46.0 (31.0, 63.0) | 55.0 (41.0, 65.0) | <0.001 |
BMI (kg/m2) | 28.6 (24.8, 33.6) | 25.5 (22.5, 29.2) | 31.1 (27.5, 36.0) | <0.001 |
Waist (cm) | 99.3 (88.6, 111.5) | 90.4 (81.2, 100.1) | 106.1 (97.0, 117.5) | <0.001 |
WHtR | 0.6 (0.5, 0.7) | 0.5 (0.5, 0.6) | 0.6 (0.6, 0.7) | <0.001 |
FPG (mmol/L) | 5.7 (5.3, 6.4) | 5.5 (5.2, 5.9) | 6.0 (5.6, 6.9) | <0.001 |
HbA1c | 5.6 (5.3, 6.0) | 5.4 (5.2, 5.7) | 5.7 (5.4, 6.2) | <0.001 |
HsCRP (mg/L) | 2.0 (0.8, 4.3) | 1.3 (0.6, 3.2) | 2.6 (1.2, 5.2) | <0.001 |
HOMA-IR | 2.6 (1.5, 4.7) | 1.7 (1.1, 2.7) | 3.7 (2.3, 6.2) | <0.001 |
RDW | 13.6 (13.1, 14.3) | 13.5 (13.0, 14.2) | 13.6 (13.1, 14.4) | <0.001 |
ALT (µ/l) | 17.0 (13.0, 25.0) | 15.0 (12.0, 21.0) | 20.0 (14.0, 29.0) | <0.001 |
AST (µ/l) | 19.0 (16.0, 23.0) | 18.0 (15.0, 22.0) | 19.0 (16.0, 24.0) | <0.001 |
BUN (mg/dL) | 14.0 (11.0, 17.0) | 13.0 (11.0, 17.0) | 14.0 (11.0, 17.0) | <0.001 |
Globulins (g/dL) | 3.1 (2.8, 3.4) | 3.1 (2.8, 3.4) | 3.1 (2.8, 3.4) | 0.002 |
Fe (µmol/L) | 6.8 (5.1, 10.3) | 6.8 (5.1, 10.3) | 6.8 (5.1, 10.3) | 0.076 |
PIR, ratio of family income to poverty; PA, physical activity; SBP, systolic blood pressure; DBP, diastolic blood pressure; K+, Serum potassium concentration; SUA, serum uric acid; CMI, cardiometabolic index; BMI, body mass index; WHtR, waist-height ratio; FPG, fasting blood glucose; HbA1c, glycosylated hemoglobin; HsCRP, high-sensitivity C-reactive protein; HOMA-IR, Homeostatic Model Assessment for Insulin Resistance; RDW, red cell distribution width; ALT, alanine aminotransferase; AST, aspartate aminotransferase; BUN, blood urea nitrogen; Fe, serum iron.
3.2 The association between CMI and MAFLD
In the univariate analysis, significant associations were found between MAFLD and various factors such as age, gender, race, marital status, alcohol status, smoking status, hypertension status, BMI, waist circumference, waist-height ratio, FPG, glycosylated hemoglobin, hs-CRP, HOMA-IR, AST, ALT, BUN, and SUA, as indicated in Table 2.
Association between MAFLD and covariates
Variable | OR_95% CI | p_value |
---|---|---|
CMI | 8.04 (6.53–9.89) | <0.001 |
Gender | ||
Male (1890) | ||
Female (1895) | 0.75 (0.66–0.85) | <0.001 |
Race | ||
Mexican American (481) | ||
Other Hispanic (381) | 0.71 (0.54–0.94) | 0.016 |
Non-Hispanic White (1272) | 0.72 (0.57–0.89) | 0.003 |
Non-Hispanic Black (947) | 0.45 (0.36–0.56) | <0.001 |
Other (668) | 0.54 (0.42–0.69) | <0.001 |
PIR | ||
Low (873) | ||
Middle (1305) | 1.16 (0.97–1.37) | 0.098 |
High (1701) | 1.04 (0.87–1.24) | 0.676 |
Education | ||
<High school (709) | ||
≥High school (3038) | 0.86 (0.73–1.02) | 0.075 |
Married | ||
No (1526) | ||
Yes (2219) | 1.38 (1.21–1.58) | <0.001 |
Alcohol | ||
No (3395) | ||
Yes (354) | 1.2 (0.96–1.5) | 0.106 |
PA | ||
Low (463) | ||
Middle (1682) | 0.93 (0.76–1.15) | 0.498 |
High (676) | 0.84 (0.66–1.06) | 0.141 |
Smoke | ||
No (2133) | ||
Yes (1614) | 1.18 (1.04–1.35) | 0.013 |
Hypertension | ||
No (1647) | ||
Yes (2102) | 2.35 (2.06–2.68) | <0.001 |
Diabetes | ||
No (1293) | ||
Yes (2456) | 1.13 (0.98–1.29) | 0.083 |
Depression | ||
No (2828) | ||
Yes (921) | 1.21 (1.04–1.41) | 0.013 |
Median CAP (dB/m) | 1.12 (1.11–1.13) | <0.001 |
SBP (mmHg) | 1.01 (1.01–1.02) | <0.001 |
DBP (mmHg) | 1.03 (1.02–1.04) | <0.001 |
K+ (mmol/L) | 1.33 (1.11–1.6) | 0.002 |
SUA (mg/dL) | 1.36 (1.3–1.43) | <0.001 |
Age | 1.02 (1.01–1.02) | <0.001 |
BMI (kg/m2) | 1.17 (1.16–1.19) | <0.001 |
Waist (cm) | 1.08 (1.07–1.08) | <0.001 |
WHtR | 71371.34 (29191.98–174495.47) | <0.001 |
FPG (mmol/L) | 1.51 (1.42–1.61) | <0.001 |
HbA1c | 1.82 (1.66–2) | <0.001 |
HsCRP (mg/L) | 1.04 (1.02–1.05) | <0.001 |
HOMA-IR | 1.23 (1.19–1.26) | <0.001 |
RDW | 1.04 (0.99–1.09) | 0.106 |
ALT (µ/l) | 1.03 (1.03–1.04) | <0.001 |
AST (µ/l) | 1.01 (1–1.02) | 0.001 |
BUN (mg/dL) | 1.02 (1.01–1.03) | 0.003 |
Globulins (g/dL) | 1.25 (1.07–1.45) | 0.004 |
Fe (µmol/L) | 0.99 (0.97–1) | 0.033 |
PIR, ratio of family income to poverty; PA, physical activity; SBP, systolic blood pressure; DBP, Diastolic blood pressure; K+, serum potassium concentration; SUA, serum uric acid; CMI, cardiometabolic index; BMI, body mass index; WHtR, waist-height ratio; FPG, fasting blood glucose; HbA1c, glycosylated hemoglobin; HsCRP, high-sensitivity C-reactive protein; HOMA-IR, homeostatic model assessment for insulin resistance; RDW, red cell distribution width; ALT, alanine aminotransferase; AST, aspartate aminotransferase; BUN, blood urea nitrogen; Fe, serum iron.
Furthermore, there was a significant association between MAFLD and the CMI when evaluated as a continuous variable. When the CMI was stratified into quartile groups, the correlation with MAFLD remained statistically significant. To better account for possible confounding variables, we performed additional logistic multivariate regression analysis and constructed three models to explore the relationship between CMI and MAFLD (Table 3).
Association between CMI and MAFLD in multiple models
Model Ⅰ | Model Ⅱ | Model Ⅲ | ||||
---|---|---|---|---|---|---|
OR (95% CI) | P value | OR (95% CI) | P value | OR (95% CI) | P value | |
CMI (3749) | 8.04 (6.53–9.89) | <0.001 | 6.8 (5.49–8.44) | <0.001 | 1.44 (1.04–1.99) | 0.026 |
CMI* | ||||||
<0.4554 (1855) | 1 (Ref) | 1 (Ref) | 1 (Ref) | |||
≥0.4554 (1894) | 4.73 (4.12–5.43) | <0.001 | 4.24 (3.66–4.92) | <0.001 | 1.2 (0.89–1.62) | 0.233 |
CMI** | ||||||
Q1 (937) | 1 (Ref) | 1 (Ref) | 1 (Ref) | |||
Q2 (937) | 2.52 (2.07–3.05) | <0.001 | 2.26 (1.85–2.76) | <0.001 | 2.03 (1.37–3.01) | <0.001 |
Q3 (937) | 5.32 (4.37–6.49) | <0.001 | 4.76 (3.87–5.86) | <0.001 | 1.58 (1.06–2.37) | 0.026 |
Q4 (938) | 12.24 (9.82–15.25) | <0.001 | 10.51 (8.32–13.28) | <0.001 | 2.07 (1.31–3.27) | 0.002 |
CMI*, CMI is treated as a continuous variable; CMI**, CMI is treated as a dichotomous variable; CMI***, CMI is treated as a quartile variable; Model Ⅰ, non-adjusted model; Model Ⅱ, adjusted for age, gender, race, education, PIR, married, smoke, alcohol, PA, hypertension, diabetes, depression; Model Ⅲ, Model Ⅱ + median CAP, SUA, BUN, FPG, HbA1c, HOMA-IR.
In Model 1, the initial analysis showed a positive correlation between CMI and MAFLD, with an odds ratio of 8.04 (95% CI: 6.53–9.89). When CMI was divided into quartiles, with Q1 as the baseline, a 0.1-unit rise in CMI in Q2 was associated with a 15.2% higher likelihood of MAFLD (95% CI: 2.07–3.05%). The Q3 group saw a 43.2% rise (95% CI: 2.07–3.05) in MAFLD occurrence for every 0.1-unit increase in CMI, while a 0.01-unit increase in CMI in Q4 resulted in an 11.24% increase (95% CI: 9.82–15.25) in MAFLD prevalence.
Adjusting for multiple variables in Model 2, such as gender, age, race, education status, marital status, PIR, alcohol status, smoking status, PA, diabetes, hypertension, and depression, revealed a positive association between the CMI and MAFLD (OR = 6.83, 95% CI: 5.51–8.47). Analysis of the quartiles of the CMI showed that compared to the Q1 group, each 0.1 increment in CMI within the Q2 group was linked to a 12.7% higher likelihood of developing MAFLD (95% CI: 1.86–2.77). Similarly, in the Q3 group, each 0.1 increase in CMI was associated with a 37.6% higher incidence of MAFLD (95% CI: 3.87–5.85). Within the Q4 group, a 0.01 rise in CMI corresponded to a significant 9.57% increase in MAFLD incidence (95% CI: 8.37–13.36).
In Model 3, additional adjustments were made for median cap, SUA, FPG, HbA1c, HOMA-IR, and BUN compared to Model 2. A positive association between CMI and MAFLD was found in the study (OR = 1.45, 95% CI (1.05–2.01)). When stratifying the CMI into quartiles, it was observed that compared to the lowest quartile (Q1), each 0.1 increment in CMI within the second quartile (Q2) was associated with an 11.2% increase in the incidence of MAFLD (95% CI: 1.44–3.14). Similarly, in the third quartile (Q3), a 0.1 increase in CMI resulted in a 6.9% rise in the occurrence of MAFLD (95% CI: 1.13–2.52). Within the highest quartile (Q4), every 0.1 increase in CMI was linked to an 11.5% increase in the incidence of MAFLD (95% CI: 1.36–3.4).
The RCS (restricted cubic spline) of CMI and MAFLD was plotted to assess linearity and investigate the curved connection between CMI and MAFLD after accounting for variables in Model 3. As shown in Figure 2, a non-linear correlation between CMI and MAFLD was detected (P for non-linearity = 0.005), suggesting that their association is not purely linear. At CMI = 0.4554, we identified a turning point in the relationship between CMI and the risk of MAFLD.

Association Between CMI and MAFLD. Each stratification was adjusted for age, gender, race, education, PIR, married, smoking, alcohol, PA, hypertension, diabetes, depression, median CAP, SUA, BUN, FPG, HbA1c, and HOMA-IR. The stratification factor itself was excluded from the adjustments. OR are represented by squares with horizontal lines indicating 95% CI. Overall ORs are represented by diamonds with outer points indicating 95% CI.
Consequently, we divided CMI into two categories and conducted multivariate logistic regression analysis, as shown in Table 3. Using CMI < 0.4554 as the baseline group, in model 1, a 0.1 increase in CMI above 0.4554 showed a substantial 37.3% rise (95% CI: 4.12–5.43) in MAFLD incidence. In model 2, individuals with CMI above 0.4554 experienced a notable 32.4% increase (95% CI: 3.66–4.92) in MAFLD incidence for each 0.1 elevation in CMI level beyond the inflection point. These findings were statistically significant, with a significance level of p ≤ 0.05. Nevertheless, in model 3, among the subset with CMI0.4554, there was a 2.3% rise (95% CI: 0.92–1.66) in the occurrence of MAFLD for each 0.1 increase in CMI. However, this result was not statistically significant (p > 0.05), potentially due to the significant difference in sample size between the two subsets.
3.3 Subgroup analyses
In order to validate the findings of logistic multivariate regression model 3, we performed subgroup analyses based on various factors, including age, gender, BMI, race, PIR, education status, marital status, alcohol, PA, smoking status, hypertension, diabetes, and depression. This was carried out to explore potential interactions between CMI and MAFLD, as well as to identify any biases that may be present in different population groups. Importantly, no significant interactions were detected within any subgroup (Figure 3), confirming the consistent and dependable results across all subgroup analyses (p > 0.05).

The non-linear association between the CMI and MAFLD. The non-linear relationships between CMI and MAFLD were examined. The solid red line represents the smoothed curve fit depicting the associations between these variables. The blue bands indicate the 95% confidence interval derived from the fitted model (the inflection point was CMI = 0.4554; p for non-linearity = 0.018).
3.4 Sensitivity analyses
After exclusion of participants with missing covariates, a total of 3,237 participants were included for analysis in the multivariable logistic regression model 3 (please refer to Table S1). The results showed a positive relationship between CMI and MAFLD (OR = 1.89, 95% CI: 0.93–3.86). When examining the CMI based on quartiles, using Q1 as the reference category, each 0.1 increase in CMI within Q2 was linked to a 9.5% higher likelihood of MAFLD (95% CI: 1.47–2.58). In the Q3 category, every 0.1 increase in CMI correlated with a 5.6% increased probability of MAFLD (95% CI: 1.14–2.13). Similarly, within the Q4 group, each 0.1 rise in CMI was associated with a significant 6.3% increase in the likelihood of MAFLD (95% CI: 1.11–2.39). After conducting multiple imputations to address missing covariates, a total of 18,745 participants were included in multivariate logistic regression model 3 (Table S2). The findings showed a positive association between CMI and MAFLD, with an OR of 1.18 and a 95% CI of 0.87–1.6. When examining CMI in quartiles with Q1 as the baseline, each 0.1 increment in CMI in Q2 was linked to a 5.9% increase in MAFAD incidence (95% CI: 0.84–3). Notably, in the Q3 group, a 0.1 rise in CMI corresponded to a 4.8% upsurge in MAFAD incidence (95% CI: 0.74–2.94), while a 0.01 unit increase in CMI within the Q4 category was associated with a substantial 14.6% elevation in MAFAD risk, with a confidence interval spanning from 1.05 to 5.76.
4 Discussion
In our cross-sectional analysis using the NHANES 2017–2020 dataset, we have conclusively shown a direct link between the CMI and MAFLD. When stratifying the CMI into quartiles, this connection becomes even more apparent. It is worth noting that a complex curve is present, with a turning point at CMI = 0.4554, suggesting that the relationship between the CMI and MAFLD is not purely linear. The reliability of these results has been confirmed through additional subgroup and sensitivity analyses, underscoring their considerable clinical importance.
The results of a cross-sectional study conducted in China illustrate a strong positive correlation between CMI and the likelihood of MAFLD, underscoring its efficacy as a dependable predictor for early detection and screening of MAFLD [27]. This emphasizes the substantial clinical utility that CMI offers in this context. In Duan’s research [16], a notable interaction between CMI and the risk of MAFLD was noted in relation to gender, age, and BMI. However, this observation was not reaffirmed in our study, possibly due to differences in the demographics and sample sizes of the study groups.
A retrospective study carried out in Dongxing Gu demonstrated that CMI can serve as a convenient screening tool for MAFLD, as each standard deviation increase in CMI was linked to a heightened risk of MAFLD [28] (OR = 3.26, 95% CI: 2.36–4.51 for females OR = 2.72, 95% CI: 2.35–3.15 for males). Moreover, the prevalence of MAFLD showed an increasing trend corresponding to higher CMI quartiles, further supporting the role of CMI in assessing MAFLD risk. The results of a cohort study conducted in a Thai HIV population indicate an association between MAFLD and augmentation in epicardial fat mass, suggesting a notable relationship between MAFLD and other metabolic disorders [29].
While BMI and waist circumference (WC) are commonly used to assess obesity, they have limitations in effectively distinguishing between complex body metabolic conditions. Using data from NHANES 2017–2018, a study by Li explored the relationship between CMI and MAFLD and found that CMI showed good diagnostic performance for MAFLD [17], especially with a notable gender-specific interaction. Although the exact mechanisms linking CMI and MAFLD are not fully understood, our results are supported by strong biological evidence. Previous research has consistently shown that MAFLD significantly increases the risk of cardiovascular diseases [30,31]. Studies have also indicated a strong link between TG/HDL-C and insulin resistance, obesity, and metabolic disorders, emphasizing its robust predictive value for NAFLD [32]. WHtR, as a marker of abdominal obesity, is closely related to lipid content and distribution [14], outperforming WC and BMI in accurately identifying NAFLD [14,33]. Our study further supports the idea that CMI is strongly associated with the risk of developing MAFLD. Building on previous research, CMI has great potential in evaluating visceral fat distribution and related health issues.
MAFLD involves a complex interplay of factors, such as insulin resistance linked to metabolic syndrome, lipotoxicity from excessive lipid accumulation, inflammation-induced hepatic damage due to infiltrating cells, and subsequent activation of hepatic stellate cells leading to fibrosis. Insulin resistance is crucial in the onset and advancement of MAFLD [34].
Previous research has noted notable variations in gender and obesity categories during subgroup analysis. Nevertheless, our study did not find the same disparities. The outcomes of our subgroup investigations, which involved eliminating individuals with incomplete covariate data and employing multiple imputations (refer to the Supplementary Material), aligned with the general findings of our research. It is important to highlight that a significant number of individuals with MAFLD in clinical settings (ranging from 6 to 20%) do not fall into the overweight or obese categories [35]. This discovery implies that utilizing BMI alone may not provide a comprehensive evaluation of the MAFLD risk [36]. It is important to point out that, as with previous research, we have found a strong relationship between RDW [37], ALT [38], AST, BUN, SUA [39], DBP, SBP, serum iron levels, serum potassium levels, and globulin levels with MAFLD in our study. In conclusion, these factors show promise as valuable indicators for evaluating the risk of MAFLD and predicting disease progression. A gender-specific study carried out in Japan showed the efficacy of CMI in a population that did not meet the criteria for metabolic syndrome. This result explains the expanding utility of CMI beyond the traditional at-risk group [40].
One of the key advantages of this research is its utilization of a cross-sectional design, drawing from a substantial pool of the general American adult population sampled through the complex multistage probability sampling approach of NHANES 2017–2020. The study delves into examining the connection between CMI and MAFLD, along with its subcategories. By collecting baseline data on different lifestyle factors such as alcohol intake, smoking habits, and PA, the researchers aimed to account for potential confounders in their analysis. This thorough approach not only facilitated a more in-depth interpretation of the primary findings but also allowed for a comprehensive sensitivity analysis to corroborate the results.
Nevertheless, there are constraints such as the inability to prove causality because of the observational approach, the importance of being cautious in interpreting risk estimates due to numerous comparisons that could result in false outcomes, and limitations in the database that restrict the inclusion of all factors influencing CMI and MAFLD while ensuring a large enough sample size. However, our data effectively explore the relationship between CMI and MAFLD, offering further supporting evidence on the subject.
5 Conclusion
Our results indicate a possible link between a higher CMI and the presence of MAFLD. This study found a curvilinear connection between CMI and MAFLD, with an inflection point identified at CMI = 0.4554. Importantly, there was a significant direct correlation between CMI and the risk of developing MAFLD. Post the inflection point (CMI = 0.4554), the rate of CMI increase slowed compared to pre-inflection levels, yet the positive association persisted. These important findings should be considered when formulating and updating clinical guidelines, although further validation and confirmation are required. However, further research is needed to investigate possible differences between populations. This will improve our understanding of the underlying mechanisms of CMI and provide valuable insights for clinical practice.
Acknowledgments
We gratefully thank Jie Liu of the Department of Vascular and Endovascular Surgery, Chinese PLA General Hospital for his contribution to the statistical support, study design consultations, and comments regarding the manuscript.
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Funding information: Authors state no funding involved.
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Author contributions: Meimei Xu, Sibo Han, and Qiaomei Wu analyzed and interpreted the data and results, and drafted the manuscript. Shihong Ma, Huiying Cai, Mengqi Xue, Fengling Liu, Xiaozhen Xiao and Xiaoshuang Chen revised the manuscript. Meimei Xu and Sibo Han proposed the concept and design of the study and revised manuscript for critical intellectual content. MeiZhen Lin revised manuscript for critical intellectual content. All authors had access to the data. All authors read and approved the final manuscript.
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Conflict of interest: Authors state no conflict of interest.
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Data availability statement: The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request. Publicly available datasets analyzed in this study can be found on https://www.cdc.gov/nchs/nhanes/index.htm.
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- Association of low attenuation area scores with pulmonary function and clinical prognosis in patients with chronic obstructive pulmonary disease
- Long non-coding RNAs in bone formation: Key regulators and therapeutic prospects
- The deubiquitinating enzyme USP35 regulates the stability of NRF2 protein
- Neutrophil-to-lymphocyte ratio and platelet-to-lymphocyte ratio as potential diagnostic markers for rebleeding in patients with esophagogastric variceal bleeding
- G protein-coupled receptor 1 participating in the mechanism of mediating gestational diabetes mellitus by phosphorylating the AKT pathway
- LL37-mtDNA regulates viability, apoptosis, inflammation, and autophagy in lipopolysaccharide-treated RLE-6TN cells by targeting Hsp90aa1
- The analgesic effect of paeoniflorin: A focused review
- Chemical composition’s effect on Solanum nigrum Linn.’s antioxidant capacity and erythrocyte protection: Bioactive components and molecular docking analysis
- Knockdown of HCK promotes HREC cell viability and inner blood–retinal barrier integrity by regulating the AMPK signaling pathway
- The role of rapamycin in the PINK1/Parkin signaling pathway in mitophagy in podocytes
- Laryngeal non-Hodgkin lymphoma: Report of four cases and review of the literature
- Clinical value of macrogenome next-generation sequencing on infections
- Overview of dendritic cells and related pathways in autoimmune uveitis
- TAK-242 alleviates diabetic cardiomyopathy via inhibiting pyroptosis and TLR4/CaMKII/NLRP3 pathway
- Hypomethylation in promoters of PGC-1α involved in exercise-driven skeletal muscular alterations in old age
- Profile and antimicrobial susceptibility patterns of bacteria isolated from effluents of Kolladiba and Debark hospitals
- The expression and clinical significance of syncytin-1 in serum exosomes of hepatocellular carcinoma patients
- A histomorphometric study to evaluate the therapeutic effects of biosynthesized silver nanoparticles on the kidneys infected with Plasmodium chabaudi
- PGRMC1 and PAQR4 are promising molecular targets for a rare subtype of ovarian cancer
- Analysis of MDA, SOD, TAOC, MNCV, SNCV, and TSS scores in patients with diabetes peripheral neuropathy
- SLIT3 deficiency promotes non-small cell lung cancer progression by modulating UBE2C/WNT signaling
- The relationship between TMCO1 and CALR in the pathological characteristics of prostate cancer and its effect on the metastasis of prostate cancer cells
- Heterogeneous nuclear ribonucleoprotein K is a potential target for enhancing the chemosensitivity of nasopharyngeal carcinoma
- PHB2 alleviates retinal pigment epithelium cell fibrosis by suppressing the AGE–RAGE pathway
- Anti-γ-aminobutyric acid-B receptor autoimmune encephalitis with syncope as the initial symptom: Case report and literature review
- Comparative analysis of chloroplast genome of Lonicera japonica cv. Damaohua
- Human umbilical cord mesenchymal stem cells regulate glutathione metabolism depending on the ERK–Nrf2–HO-1 signal pathway to repair phosphoramide mustard-induced ovarian cancer cells
- Electroacupuncture on GB acupoints improves osteoporosis via the estradiol–PI3K–Akt signaling pathway
- Renalase protects against podocyte injury by inhibiting oxidative stress and apoptosis in diabetic nephropathy
- Review: Dicranostigma leptopodum: A peculiar plant of Papaveraceae
- Combination effect of flavonoids attenuates lung cancer cell proliferation by inhibiting the STAT3 and FAK signaling pathway
- Renal microangiopathy and immune complex glomerulonephritis induced by anti-tumour agents: A case report
- Correlation analysis of AVPR1a and AVPR2 with abnormal water and sodium and potassium metabolism in rats
- Gastrointestinal health anti-diarrheal mixture relieves spleen deficiency-induced diarrhea through regulating gut microbiota
- Myriad factors and pathways influencing tumor radiotherapy resistance
- Exploring the effects of culture conditions on Yapsin (YPS) gene expression in Nakaseomyces glabratus
- Screening of prognostic core genes based on cell–cell interaction in the peripheral blood of patients with sepsis
- Coagulation factor II thrombin receptor as a promising biomarker in breast cancer management
- Ileocecal mucinous carcinoma misdiagnosed as incarcerated hernia: A case report
- Methyltransferase like 13 promotes malignant behaviors of bladder cancer cells through targeting PI3K/ATK signaling pathway
- The debate between electricity and heat, efficacy and safety of irreversible electroporation and radiofrequency ablation in the treatment of liver cancer: A meta-analysis
- ZAG promotes colorectal cancer cell proliferation and epithelial–mesenchymal transition by promoting lipid synthesis
- Baicalein inhibits NLRP3 inflammasome activation and mitigates placental inflammation and oxidative stress in gestational diabetes mellitus
- Impact of SWCNT-conjugated senna leaf extract on breast cancer cells: A potential apoptotic therapeutic strategy
- MFAP5 inhibits the malignant progression of endometrial cancer cells in vitro
- Major ozonated autohemotherapy promoted functional recovery following spinal cord injury in adult rats via the inhibition of oxidative stress and inflammation
- Axodendritic targeting of TAU and MAP2 and microtubule polarization in iPSC-derived versus SH-SY5Y-derived human neurons
- Differential expression of phosphoinositide 3-kinase/protein kinase B and Toll-like receptor/nuclear factor kappa B signaling pathways in experimental obesity Wistar rat model
- The therapeutic potential of targeting Oncostatin M and the interleukin-6 family in retinal diseases: A comprehensive review
- BA inhibits LPS-stimulated inflammatory response and apoptosis in human middle ear epithelial cells by regulating the Nf-Kb/Iκbα axis
- Role of circRMRP and circRPL27 in chronic obstructive pulmonary disease
- Investigating the role of hyperexpressed HCN1 in inducing myocardial infarction through activation of the NF-κB signaling pathway
- Characterization of phenolic compounds and evaluation of anti-diabetic potential in Cannabis sativa L. seeds: In vivo, in vitro, and in silico studies
- Quantitative immunohistochemistry analysis of breast Ki67 based on artificial intelligence
- Ecology and Environmental Science
- Screening of different growth conditions of Bacillus subtilis isolated from membrane-less microbial fuel cell toward antimicrobial activity profiling
- Degradation of a mixture of 13 polycyclic aromatic hydrocarbons by commercial effective microorganisms
- Evaluation of the impact of two citrus plants on the variation of Panonychus citri (Acari: Tetranychidae) and beneficial phytoseiid mites
- Prediction of present and future distribution areas of Juniperus drupacea Labill and determination of ethnobotany properties in Antalya Province, Türkiye
- Population genetics of Todarodes pacificus (Cephalopoda: Ommastrephidae) in the northwest Pacific Ocean via GBS sequencing
- A comparative analysis of dendrometric, macromorphological, and micromorphological characteristics of Pistacia atlantica subsp. atlantica and Pistacia terebinthus in the middle Atlas region of Morocco
- Macrofungal sporocarp community in the lichen Scots pine forests
- Assessing the proximate compositions of indigenous forage species in Yemen’s pastoral rangelands
- Food Science
- Gut microbiota changes associated with low-carbohydrate diet intervention for obesity
- Reexamination of Aspergillus cristatus phylogeny in dark tea: Characteristics of the mitochondrial genome
- Differences in the flavonoid composition of the leaves, fruits, and branches of mulberry are distinguished based on a plant metabolomics approach
- Investigating the impact of wet rendering (solventless method) on PUFA-rich oil from catfish (Clarias magur) viscera
- Non-linear associations between cardiovascular metabolic indices and metabolic-associated fatty liver disease: A cross-sectional study in the US population (2017–2020)
- Knockdown of USP7 alleviates atherosclerosis in ApoE-deficient mice by regulating EZH2 expression
- Utility of dairy microbiome as a tool for authentication and traceability
- Agriculture
- Enhancing faba bean (Vicia faba L.) productivity through establishing the area-specific fertilizer rate recommendation in southwest Ethiopia
- Impact of novel herbicide based on synthetic auxins and ALS inhibitor on weed control
- Perspectives of pteridophytes microbiome for bioremediation in agricultural applications
- Fertilizer application parameters for drip-irrigated peanut based on the fertilizer effect function established from a “3414” field trial
- Improving the productivity and profitability of maize (Zea mays L.) using optimum blended inorganic fertilization
- Application of leaf multispectral analyzer in comparison to hyperspectral device to assess the diversity of spectral reflectance indices in wheat genotypes
- Animal Sciences
- Knockdown of ANP32E inhibits colorectal cancer cell growth and glycolysis by regulating the AKT/mTOR pathway
- Development of a detection chip for major pathogenic drug-resistant genes and drug targets in bovine respiratory system diseases
- Exploration of the genetic influence of MYOT and MB genes on the plumage coloration of Muscovy ducks
- Transcriptome analysis of adipose tissue in grazing cattle: Identifying key regulators of fat metabolism
- Comparison of nutritional value of the wild and cultivated spiny loaches at three growth stages
- Transcriptomic analysis of liver immune response in Chinese spiny frog (Quasipaa spinosa) infected with Proteus mirabilis
- Disruption of BCAA degradation is a critical characteristic of diabetic cardiomyopathy revealed by integrated transcriptome and metabolome analysis
- Plant Sciences
- Effect of long-term in-row branch covering on soil microorganisms in pear orchards
- Photosynthetic physiological characteristics, growth performance, and element concentrations reveal the calcicole–calcifuge behaviors of three Camellia species
- Transcriptome analysis reveals the mechanism of NaHCO3 promoting tobacco leaf maturation
- Bioinformatics, expression analysis, and functional verification of allene oxide synthase gene HvnAOS1 and HvnAOS2 in qingke
- Water, nitrogen, and phosphorus coupling improves gray jujube fruit quality and yield
- Improving grape fruit quality through soil conditioner: Insights from RNA-seq analysis of Cabernet Sauvignon roots
- Role of Embinin in the reabsorption of nucleus pulposus in lumbar disc herniation: Promotion of nucleus pulposus neovascularization and apoptosis of nucleus pulposus cells
- Revealing the effects of amino acid, organic acid, and phytohormones on the germination of tomato seeds under salinity stress
- Combined effects of nitrogen fertilizer and biochar on the growth, yield, and quality of pepper
- Comprehensive phytochemical and toxicological analysis of Chenopodium ambrosioides (L.) fractions
- Impact of “3414” fertilization on the yield and quality of greenhouse tomatoes
- Exploring the coupling mode of water and fertilizer for improving growth, fruit quality, and yield of the pear in the arid region
- Metagenomic analysis of endophytic bacteria in seed potato (Solanum tuberosum)
- Antibacterial, antifungal, and phytochemical properties of Salsola kali ethanolic extract
- Exploring the hepatoprotective properties of citronellol: In vitro and in silico studies on ethanol-induced damage in HepG2 cells
- Enhanced osmotic dehydration of watermelon rind using honey–sucrose solutions: A study on pre-treatment efficacy and mass transfer kinetics
- Effects of exogenous 2,4-epibrassinolide on photosynthetic traits of 53 cowpea varieties under NaCl stress
- Comparative transcriptome analysis of maize (Zea mays L.) seedlings in response to copper stress
- An optimization method for measuring the stomata in cassava (Manihot esculenta Crantz) under multiple abiotic stresses
- Fosinopril inhibits Ang II-induced VSMC proliferation, phenotype transformation, migration, and oxidative stress through the TGF-β1/Smad signaling pathway
- Antioxidant and antimicrobial activities of Salsola imbricata methanolic extract and its phytochemical characterization
- Bioengineering and Biotechnology
- Absorbable calcium and phosphorus bioactive membranes promote bone marrow mesenchymal stem cells osteogenic differentiation for bone regeneration
- New advances in protein engineering for industrial applications: Key takeaways
- An overview of the production and use of Bacillus thuringiensis toxin
- Research progress of nanoparticles in diagnosis and treatment of hepatocellular carcinoma
- Bioelectrochemical biosensors for water quality assessment and wastewater monitoring
- PEI/MMNs@LNA-542 nanoparticles alleviate ICU-acquired weakness through targeted autophagy inhibition and mitochondrial protection
- Unleashing of cytotoxic effects of thymoquinone-bovine serum albumin nanoparticles on A549 lung cancer cells
- Erratum
- Erratum to “Investigating the association between dietary patterns and glycemic control among children and adolescents with T1DM”
- Erratum to “Activation of hypermethylated P2RY1 mitigates gastric cancer by promoting apoptosis and inhibiting proliferation”
- Retraction
- Retraction to “MiR-223-3p regulates cell viability, migration, invasion, and apoptosis of non-small cell lung cancer cells by targeting RHOB”
- Retraction to “A data mining technique for detecting malignant mesothelioma cancer using multiple regression analysis”
- Special Issue on Advances in Neurodegenerative Disease Research and Treatment
- Transplantation of human neural stem cell prevents symptomatic motor behavior disability in a rat model of Parkinson’s disease
- Special Issue on Multi-omics
- Inflammasome complex genes with clinical relevance suggest potential as therapeutic targets for anti-tumor drugs in clear cell renal cell carcinoma
- Gastroesophageal varices in primary biliary cholangitis with anti-centromere antibody positivity: Early onset?
Articles in the same Issue
- Biomedical Sciences
- Constitutive and evoked release of ATP in adult mouse olfactory epithelium
- LARP1 knockdown inhibits cultured gastric carcinoma cell cycle progression and metastatic behavior
- PEGylated porcine–human recombinant uricase: A novel fusion protein with improved efficacy and safety for the treatment of hyperuricemia and renal complications
- Research progress on ocular complications caused by type 2 diabetes mellitus and the function of tears and blepharons
- The role and mechanism of esketamine in preventing and treating remifentanil-induced hyperalgesia based on the NMDA receptor–CaMKII pathway
- Brucella infection combined with Nocardia infection: A case report and literature review
- Detection of serum interleukin-18 level and neutrophil/lymphocyte ratio in patients with antineutrophil cytoplasmic antibody-associated vasculitis and its clinical significance
- Ang-1, Ang-2, and Tie2 are diagnostic biomarkers for Henoch-Schönlein purpura and pediatric-onset systemic lupus erythematous
- PTTG1 induces pancreatic cancer cell proliferation and promotes aerobic glycolysis by regulating c-myc
- Role of serum B-cell-activating factor and interleukin-17 as biomarkers in the classification of interstitial pneumonia with autoimmune features
- Effectiveness and safety of a mumps containing vaccine in preventing laboratory-confirmed mumps cases from 2002 to 2017: A meta-analysis
- Low levels of sex hormone-binding globulin predict an increased breast cancer risk and its underlying molecular mechanisms
- A case of Trousseau syndrome: Screening, detection and complication
- Application of the integrated airway humidification device enhances the humidification effect of the rabbit tracheotomy model
- Preparation of Cu2+/TA/HAP composite coating with anti-bacterial and osteogenic potential on 3D-printed porous Ti alloy scaffolds for orthopedic applications
- Aquaporin-8 promotes human dermal fibroblasts to counteract hydrogen peroxide-induced oxidative damage: A novel target for management of skin aging
- Current research and evidence gaps on placental development in iron deficiency anemia
- Single-nucleotide polymorphism rs2910829 in PDE4D is related to stroke susceptibility in Chinese populations: The results of a meta-analysis
- Pheochromocytoma-induced myocardial infarction: A case report
- Kaempferol regulates apoptosis and migration of neural stem cells to attenuate cerebral infarction by O‐GlcNAcylation of β-catenin
- Sirtuin 5 regulates acute myeloid leukemia cell viability and apoptosis by succinylation modification of glycine decarboxylase
- Apigenin 7-glucoside impedes hypoxia-induced malignant phenotypes of cervical cancer cells in a p16-dependent manner
- KAT2A changes the function of endometrial stromal cells via regulating the succinylation of ENO1
- Current state of research on copper complexes in the treatment of breast cancer
- Exploring antioxidant strategies in the pathogenesis of ALS
- Helicobacter pylori causes gastric dysbacteriosis in chronic gastritis patients
- IL-33/soluble ST2 axis is associated with radiation-induced cardiac injury
- The predictive value of serum NLR, SII, and OPNI for lymph node metastasis in breast cancer patients with internal mammary lymph nodes after thoracoscopic surgery
- Carrying SNP rs17506395 (T > G) in TP63 gene and CCR5Δ32 mutation associated with the occurrence of breast cancer in Burkina Faso
- P2X7 receptor: A receptor closely linked with sepsis-associated encephalopathy
- Probiotics for inflammatory bowel disease: Is there sufficient evidence?
- Identification of KDM4C as a gene conferring drug resistance in multiple myeloma
- Microbial perspective on the skin–gut axis and atopic dermatitis
- Thymosin α1 combined with XELOX improves immune function and reduces serum tumor markers in colorectal cancer patients after radical surgery
- Highly specific vaginal microbiome signature for gynecological cancers
- Sample size estimation for AQP4-IgG seropositive optic neuritis: Retinal damage detection by optical coherence tomography
- The effects of SDF-1 combined application with VEGF on femoral distraction osteogenesis in rats
- Fabrication and characterization of gold nanoparticles using alginate: In vitro and in vivo assessment of its administration effects with swimming exercise on diabetic rats
- Mitigating digestive disorders: Action mechanisms of Mediterranean herbal active compounds
- Distribution of CYP2D6 and CYP2C19 gene polymorphisms in Han and Uygur populations with breast cancer in Xinjiang, China
- VSP-2 attenuates secretion of inflammatory cytokines induced by LPS in BV2 cells by mediating the PPARγ/NF-κB signaling pathway
- Factors influencing spontaneous hypothermia after emergency trauma and the construction of a predictive model
- Long-term administration of morphine specifically alters the level of protein expression in different brain regions and affects the redox state
- Application of metagenomic next-generation sequencing technology in the etiological diagnosis of peritoneal dialysis-associated peritonitis
- Clinical diagnosis, prevention, and treatment of neurodyspepsia syndrome using intelligent medicine
- Case report: Successful bronchoscopic interventional treatment of endobronchial leiomyomas
- Preliminary investigation into the genetic etiology of short stature in children through whole exon sequencing of the core family
- Cystic adenomyoma of the uterus: Case report and literature review
- Mesoporous silica nanoparticles as a drug delivery mechanism
- Dynamic changes in autophagy activity in different degrees of pulmonary fibrosis in mice
- Vitamin D deficiency and inflammatory markers in type 2 diabetes: Big data insights
- Lactate-induced IGF1R protein lactylation promotes proliferation and metabolic reprogramming of lung cancer cells
- Meta-analysis on the efficacy of allogeneic hematopoietic stem cell transplantation to treat malignant lymphoma
- Mitochondrial DNA drives neuroinflammation through the cGAS-IFN signaling pathway in the spinal cord of neuropathic pain mice
- Application value of artificial intelligence algorithm-based magnetic resonance multi-sequence imaging in staging diagnosis of cervical cancer
- Embedded monitoring system and teaching of artificial intelligence online drug component recognition
- Investigation into the association of FNDC1 and ADAMTS12 gene expression with plumage coloration in Muscovy ducks
- Yak meat content in feed and its impact on the growth of rats
- A rare case of Richter transformation with breast involvement: A case report and literature review
- First report of Nocardia wallacei infection in an immunocompetent patient in Zhejiang province
- Rhodococcus equi and Brucella pulmonary mass in immunocompetent: A case report and literature review
- Downregulation of RIP3 ameliorates the left ventricular mechanics and function after myocardial infarction via modulating NF-κB/NLRP3 pathway
- Evaluation of the role of some non-enzymatic antioxidants among Iraqi patients with non-alcoholic fatty liver disease
- The role of Phafin proteins in cell signaling pathways and diseases
- Ten-year anemia as initial manifestation of Castleman disease in the abdominal cavity: A case report
- Coexistence of hereditary spherocytosis with SPTB P.Trp1150 gene variant and Gilbert syndrome: A case report and literature review
- Utilization of convolutional neural networks to analyze microscopic images for high-throughput screening of mesenchymal stem cells
- Exploratory evaluation supported by experimental and modeling approaches of Inula viscosa root extract as a potent corrosion inhibitor for mild steel in a 1 M HCl solution
- Imaging manifestations of ductal adenoma of the breast: A case report
- Gut microbiota and sleep: Interaction mechanisms and therapeutic prospects
- Isomangiferin promotes the migration and osteogenic differentiation of rat bone marrow mesenchymal stem cells
- Prognostic value and microenvironmental crosstalk of exosome-related signatures in human epidermal growth factor receptor 2 positive breast cancer
- Circular RNAs as potential biomarkers for male severe sepsis
- Knockdown of Stanniocalcin-1 inhibits growth and glycolysis in oral squamous cell carcinoma cells
- The expression and biological role of complement C1s in esophageal squamous cell carcinoma
- A novel GNAS mutation in pseudohypoparathyroidism type 1a with articular flexion deformity: A case report
- Predictive value of serum magnesium levels for prognosis in patients with non-small cell lung cancer undergoing EGFR-TKI therapy
- HSPB1 alleviates acute-on-chronic liver failure via the P53/Bax pathway
- IgG4-related disease complicated by PLA2R-associated membranous nephropathy: A case report
- Baculovirus-mediated endostatin and angiostatin activation of autophagy through the AMPK/AKT/mTOR pathway inhibits angiogenesis in hepatocellular carcinoma
- Metformin mitigates osteoarthritis progression by modulating the PI3K/AKT/mTOR signaling pathway and enhancing chondrocyte autophagy
- Evaluation of the activity of antimicrobial peptides against bacterial vaginosis
- Atypical presentation of γ/δ mycosis fungoides with an unusual phenotype and SOCS1 mutation
- Analysis of the microecological mechanism of diabetic kidney disease based on the theory of “gut–kidney axis”: A systematic review
- Omega-3 fatty acids prevent gestational diabetes mellitus via modulation of lipid metabolism
- Refractory hypertension complicated with Turner syndrome: A case report
- Interaction of ncRNAs and the PI3K/AKT/mTOR pathway: Implications for osteosarcoma
- Association of low attenuation area scores with pulmonary function and clinical prognosis in patients with chronic obstructive pulmonary disease
- Long non-coding RNAs in bone formation: Key regulators and therapeutic prospects
- The deubiquitinating enzyme USP35 regulates the stability of NRF2 protein
- Neutrophil-to-lymphocyte ratio and platelet-to-lymphocyte ratio as potential diagnostic markers for rebleeding in patients with esophagogastric variceal bleeding
- G protein-coupled receptor 1 participating in the mechanism of mediating gestational diabetes mellitus by phosphorylating the AKT pathway
- LL37-mtDNA regulates viability, apoptosis, inflammation, and autophagy in lipopolysaccharide-treated RLE-6TN cells by targeting Hsp90aa1
- The analgesic effect of paeoniflorin: A focused review
- Chemical composition’s effect on Solanum nigrum Linn.’s antioxidant capacity and erythrocyte protection: Bioactive components and molecular docking analysis
- Knockdown of HCK promotes HREC cell viability and inner blood–retinal barrier integrity by regulating the AMPK signaling pathway
- The role of rapamycin in the PINK1/Parkin signaling pathway in mitophagy in podocytes
- Laryngeal non-Hodgkin lymphoma: Report of four cases and review of the literature
- Clinical value of macrogenome next-generation sequencing on infections
- Overview of dendritic cells and related pathways in autoimmune uveitis
- TAK-242 alleviates diabetic cardiomyopathy via inhibiting pyroptosis and TLR4/CaMKII/NLRP3 pathway
- Hypomethylation in promoters of PGC-1α involved in exercise-driven skeletal muscular alterations in old age
- Profile and antimicrobial susceptibility patterns of bacteria isolated from effluents of Kolladiba and Debark hospitals
- The expression and clinical significance of syncytin-1 in serum exosomes of hepatocellular carcinoma patients
- A histomorphometric study to evaluate the therapeutic effects of biosynthesized silver nanoparticles on the kidneys infected with Plasmodium chabaudi
- PGRMC1 and PAQR4 are promising molecular targets for a rare subtype of ovarian cancer
- Analysis of MDA, SOD, TAOC, MNCV, SNCV, and TSS scores in patients with diabetes peripheral neuropathy
- SLIT3 deficiency promotes non-small cell lung cancer progression by modulating UBE2C/WNT signaling
- The relationship between TMCO1 and CALR in the pathological characteristics of prostate cancer and its effect on the metastasis of prostate cancer cells
- Heterogeneous nuclear ribonucleoprotein K is a potential target for enhancing the chemosensitivity of nasopharyngeal carcinoma
- PHB2 alleviates retinal pigment epithelium cell fibrosis by suppressing the AGE–RAGE pathway
- Anti-γ-aminobutyric acid-B receptor autoimmune encephalitis with syncope as the initial symptom: Case report and literature review
- Comparative analysis of chloroplast genome of Lonicera japonica cv. Damaohua
- Human umbilical cord mesenchymal stem cells regulate glutathione metabolism depending on the ERK–Nrf2–HO-1 signal pathway to repair phosphoramide mustard-induced ovarian cancer cells
- Electroacupuncture on GB acupoints improves osteoporosis via the estradiol–PI3K–Akt signaling pathway
- Renalase protects against podocyte injury by inhibiting oxidative stress and apoptosis in diabetic nephropathy
- Review: Dicranostigma leptopodum: A peculiar plant of Papaveraceae
- Combination effect of flavonoids attenuates lung cancer cell proliferation by inhibiting the STAT3 and FAK signaling pathway
- Renal microangiopathy and immune complex glomerulonephritis induced by anti-tumour agents: A case report
- Correlation analysis of AVPR1a and AVPR2 with abnormal water and sodium and potassium metabolism in rats
- Gastrointestinal health anti-diarrheal mixture relieves spleen deficiency-induced diarrhea through regulating gut microbiota
- Myriad factors and pathways influencing tumor radiotherapy resistance
- Exploring the effects of culture conditions on Yapsin (YPS) gene expression in Nakaseomyces glabratus
- Screening of prognostic core genes based on cell–cell interaction in the peripheral blood of patients with sepsis
- Coagulation factor II thrombin receptor as a promising biomarker in breast cancer management
- Ileocecal mucinous carcinoma misdiagnosed as incarcerated hernia: A case report
- Methyltransferase like 13 promotes malignant behaviors of bladder cancer cells through targeting PI3K/ATK signaling pathway
- The debate between electricity and heat, efficacy and safety of irreversible electroporation and radiofrequency ablation in the treatment of liver cancer: A meta-analysis
- ZAG promotes colorectal cancer cell proliferation and epithelial–mesenchymal transition by promoting lipid synthesis
- Baicalein inhibits NLRP3 inflammasome activation and mitigates placental inflammation and oxidative stress in gestational diabetes mellitus
- Impact of SWCNT-conjugated senna leaf extract on breast cancer cells: A potential apoptotic therapeutic strategy
- MFAP5 inhibits the malignant progression of endometrial cancer cells in vitro
- Major ozonated autohemotherapy promoted functional recovery following spinal cord injury in adult rats via the inhibition of oxidative stress and inflammation
- Axodendritic targeting of TAU and MAP2 and microtubule polarization in iPSC-derived versus SH-SY5Y-derived human neurons
- Differential expression of phosphoinositide 3-kinase/protein kinase B and Toll-like receptor/nuclear factor kappa B signaling pathways in experimental obesity Wistar rat model
- The therapeutic potential of targeting Oncostatin M and the interleukin-6 family in retinal diseases: A comprehensive review
- BA inhibits LPS-stimulated inflammatory response and apoptosis in human middle ear epithelial cells by regulating the Nf-Kb/Iκbα axis
- Role of circRMRP and circRPL27 in chronic obstructive pulmonary disease
- Investigating the role of hyperexpressed HCN1 in inducing myocardial infarction through activation of the NF-κB signaling pathway
- Characterization of phenolic compounds and evaluation of anti-diabetic potential in Cannabis sativa L. seeds: In vivo, in vitro, and in silico studies
- Quantitative immunohistochemistry analysis of breast Ki67 based on artificial intelligence
- Ecology and Environmental Science
- Screening of different growth conditions of Bacillus subtilis isolated from membrane-less microbial fuel cell toward antimicrobial activity profiling
- Degradation of a mixture of 13 polycyclic aromatic hydrocarbons by commercial effective microorganisms
- Evaluation of the impact of two citrus plants on the variation of Panonychus citri (Acari: Tetranychidae) and beneficial phytoseiid mites
- Prediction of present and future distribution areas of Juniperus drupacea Labill and determination of ethnobotany properties in Antalya Province, Türkiye
- Population genetics of Todarodes pacificus (Cephalopoda: Ommastrephidae) in the northwest Pacific Ocean via GBS sequencing
- A comparative analysis of dendrometric, macromorphological, and micromorphological characteristics of Pistacia atlantica subsp. atlantica and Pistacia terebinthus in the middle Atlas region of Morocco
- Macrofungal sporocarp community in the lichen Scots pine forests
- Assessing the proximate compositions of indigenous forage species in Yemen’s pastoral rangelands
- Food Science
- Gut microbiota changes associated with low-carbohydrate diet intervention for obesity
- Reexamination of Aspergillus cristatus phylogeny in dark tea: Characteristics of the mitochondrial genome
- Differences in the flavonoid composition of the leaves, fruits, and branches of mulberry are distinguished based on a plant metabolomics approach
- Investigating the impact of wet rendering (solventless method) on PUFA-rich oil from catfish (Clarias magur) viscera
- Non-linear associations between cardiovascular metabolic indices and metabolic-associated fatty liver disease: A cross-sectional study in the US population (2017–2020)
- Knockdown of USP7 alleviates atherosclerosis in ApoE-deficient mice by regulating EZH2 expression
- Utility of dairy microbiome as a tool for authentication and traceability
- Agriculture
- Enhancing faba bean (Vicia faba L.) productivity through establishing the area-specific fertilizer rate recommendation in southwest Ethiopia
- Impact of novel herbicide based on synthetic auxins and ALS inhibitor on weed control
- Perspectives of pteridophytes microbiome for bioremediation in agricultural applications
- Fertilizer application parameters for drip-irrigated peanut based on the fertilizer effect function established from a “3414” field trial
- Improving the productivity and profitability of maize (Zea mays L.) using optimum blended inorganic fertilization
- Application of leaf multispectral analyzer in comparison to hyperspectral device to assess the diversity of spectral reflectance indices in wheat genotypes
- Animal Sciences
- Knockdown of ANP32E inhibits colorectal cancer cell growth and glycolysis by regulating the AKT/mTOR pathway
- Development of a detection chip for major pathogenic drug-resistant genes and drug targets in bovine respiratory system diseases
- Exploration of the genetic influence of MYOT and MB genes on the plumage coloration of Muscovy ducks
- Transcriptome analysis of adipose tissue in grazing cattle: Identifying key regulators of fat metabolism
- Comparison of nutritional value of the wild and cultivated spiny loaches at three growth stages
- Transcriptomic analysis of liver immune response in Chinese spiny frog (Quasipaa spinosa) infected with Proteus mirabilis
- Disruption of BCAA degradation is a critical characteristic of diabetic cardiomyopathy revealed by integrated transcriptome and metabolome analysis
- Plant Sciences
- Effect of long-term in-row branch covering on soil microorganisms in pear orchards
- Photosynthetic physiological characteristics, growth performance, and element concentrations reveal the calcicole–calcifuge behaviors of three Camellia species
- Transcriptome analysis reveals the mechanism of NaHCO3 promoting tobacco leaf maturation
- Bioinformatics, expression analysis, and functional verification of allene oxide synthase gene HvnAOS1 and HvnAOS2 in qingke
- Water, nitrogen, and phosphorus coupling improves gray jujube fruit quality and yield
- Improving grape fruit quality through soil conditioner: Insights from RNA-seq analysis of Cabernet Sauvignon roots
- Role of Embinin in the reabsorption of nucleus pulposus in lumbar disc herniation: Promotion of nucleus pulposus neovascularization and apoptosis of nucleus pulposus cells
- Revealing the effects of amino acid, organic acid, and phytohormones on the germination of tomato seeds under salinity stress
- Combined effects of nitrogen fertilizer and biochar on the growth, yield, and quality of pepper
- Comprehensive phytochemical and toxicological analysis of Chenopodium ambrosioides (L.) fractions
- Impact of “3414” fertilization on the yield and quality of greenhouse tomatoes
- Exploring the coupling mode of water and fertilizer for improving growth, fruit quality, and yield of the pear in the arid region
- Metagenomic analysis of endophytic bacteria in seed potato (Solanum tuberosum)
- Antibacterial, antifungal, and phytochemical properties of Salsola kali ethanolic extract
- Exploring the hepatoprotective properties of citronellol: In vitro and in silico studies on ethanol-induced damage in HepG2 cells
- Enhanced osmotic dehydration of watermelon rind using honey–sucrose solutions: A study on pre-treatment efficacy and mass transfer kinetics
- Effects of exogenous 2,4-epibrassinolide on photosynthetic traits of 53 cowpea varieties under NaCl stress
- Comparative transcriptome analysis of maize (Zea mays L.) seedlings in response to copper stress
- An optimization method for measuring the stomata in cassava (Manihot esculenta Crantz) under multiple abiotic stresses
- Fosinopril inhibits Ang II-induced VSMC proliferation, phenotype transformation, migration, and oxidative stress through the TGF-β1/Smad signaling pathway
- Antioxidant and antimicrobial activities of Salsola imbricata methanolic extract and its phytochemical characterization
- Bioengineering and Biotechnology
- Absorbable calcium and phosphorus bioactive membranes promote bone marrow mesenchymal stem cells osteogenic differentiation for bone regeneration
- New advances in protein engineering for industrial applications: Key takeaways
- An overview of the production and use of Bacillus thuringiensis toxin
- Research progress of nanoparticles in diagnosis and treatment of hepatocellular carcinoma
- Bioelectrochemical biosensors for water quality assessment and wastewater monitoring
- PEI/MMNs@LNA-542 nanoparticles alleviate ICU-acquired weakness through targeted autophagy inhibition and mitochondrial protection
- Unleashing of cytotoxic effects of thymoquinone-bovine serum albumin nanoparticles on A549 lung cancer cells
- Erratum
- Erratum to “Investigating the association between dietary patterns and glycemic control among children and adolescents with T1DM”
- Erratum to “Activation of hypermethylated P2RY1 mitigates gastric cancer by promoting apoptosis and inhibiting proliferation”
- Retraction
- Retraction to “MiR-223-3p regulates cell viability, migration, invasion, and apoptosis of non-small cell lung cancer cells by targeting RHOB”
- Retraction to “A data mining technique for detecting malignant mesothelioma cancer using multiple regression analysis”
- Special Issue on Advances in Neurodegenerative Disease Research and Treatment
- Transplantation of human neural stem cell prevents symptomatic motor behavior disability in a rat model of Parkinson’s disease
- Special Issue on Multi-omics
- Inflammasome complex genes with clinical relevance suggest potential as therapeutic targets for anti-tumor drugs in clear cell renal cell carcinoma
- Gastroesophageal varices in primary biliary cholangitis with anti-centromere antibody positivity: Early onset?