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A decrease in fasting FGF19 levels is associated with the development of non-alcoholic fatty liver disease in obese adolescents
-
Malgorzata Wojcik
,
Dominika Janus
Published/Copyright:
October 20, 2012
Abstract
Aim: Fibroblast growth factor 19 (FGF19) is a hormone released from the small intestine; recently, it has emerged as an endocrine regulator of glucose and lipid metabolism. The aim of this study was to investigate the role of FGF19 in the development of nonalcoholic fatty liver disease (NAFLD).
Patients: This study included 23 (17 boys) obese adolescents (mean age of 14.1 years) with NAFLD. The control group consisted of 34 (13 boys) obese peers with normal ultrasonographic imaging and normal liver function tests.
Methods: The definition of NAFLD was based on clinical criteria: elevated alanine aminotransferase (>35 U/L) and liver steatosis features on ultrasound imaging. Serum FGF19 levels were measured in a fasting blood sample. The definition of insulin resistance was based on the homeostasis model assessment (HOMA) threshold: >2.5.
Results: There was a significant difference between mean FGF19 levels in patients with NAFLD and controls (142.2 vs. 206 pg/mL, p=0.04). Mean fasting FGF19 levels were decreased in insulin-resistant patients in comparison with the non-insulin-resistant group (155.0 vs. 221.0 pg/mL, p=0.05). There was an inverse correlation between FGF19 and alanine aminotransferase levels (R=–0.3, p<0.05) and triglycerides (R=–0.27, p<0.05).
Conclusion: A decrease in fasting FGF19 is associated with the development of NAFLD in obese adolescents. A decrease in fasting FGF19 levels may be a new important risk factor for NAFLD and the metabolic syndrome in adolescents. Further studies are needed to explain whether exogenous delivery of FGF19 might be therapeutically beneficial.
Keywords: adolescents; fibroblast growth factor 19 (FGF19); non-alcoholic fatty liver disease (NAFLD); obesity
Received: 2012-8-1
Accepted: 2012-9-21
Published Online: 2012-10-20
Published in Print: 2012-12-01
©2012 by Walter de Gruyter Berlin Boston
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Keywords for this article
adolescents;
fibroblast growth factor 19 (FGF19);
non-alcoholic fatty liver disease (NAFLD);
obesity
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- The pros and cons of sex steroid priming in growth hormone stimulation testing
- Images in pediatric endocrinology
- Tuber sinerium hamartoma causing precocious puberty in a child
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