Reference Values for Plasma Dipeptidyl Peptidase IV Activity and Their Association with Other Laboratory Parameters
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Christine Durinx
Abstract
In blood, the exopeptidase dipeptidyl-peptidase IV (DPPIV; EC 3.4.14.5) is predominantly present in a soluble form in plasma/serum and as an activation antigen on the membrane of lymphocytes (CD26). It modifies some important biologically active peptides (neuropeptides, chemokines), and a regulatory role for DPPIV/CD26 in immune and endocrine processes has been demonstrated.
The aim of this study was to determine reference values for plasma/serum DPPIV activity and to study the association of this activity with a series of biochemical and hematological parameters and baseline characteristics such as age, gender, blood pressure and body mass index. We studied 481 healthy subjects aged between 19 and 61 years. The group consisted of 213 men and 268 women equally divided between the different categories of age. Among the women, 127 were taking hormone therapy (contraception/hormone replacement) and 141 were not.
A multiple regression model shows that DPPIV activity decreases significantly with age. The activity in women is slightly lower than in men. We observed an important association with liver, muscle and lipid metabolism-related parameters. In this model, no significant contribution of body mass index, blood pressure or hormone therapy could be stated.
Copyright © 2001 by Walter de Gruyter GmbH & Co. KG
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Articles in the same Issue
- Special Issues of the Journal
- Clinical Biological and Genetic Heterogeneity of the Inborn Errors of Pulmonary Surfactant Metabolism
- The Effects of Impaired Trace Element Status on Polymorphonuclear Leukocyte Activation in the Development of Vascular Complications in Type 2 Diabetes Mellitus
- Free and Complexed Prostate-Specific Antigen (PSA) in the Early Detection of Prostate Cancer
- Heterogeneity of DNA Methylation Status Analyzed by Bisulfite-PCR-SSCP and Correlation with Clinico-Pathological Characteristics in Colorectal Cancer
- Serum Amyloid A Protein (SAA) in Colorectal Carcinoma
- Metal Exposure from Amalgam Alters the Distribution of Trace Elements in Blood Cells and Plasma
- Diabetic Cataract and the Total Antioxidant Status in Aqueous Humor
- Candidate Gene Polymorphism in Cardiovascular Disease: A Comparative Study of Frequencies between a French and an Italian Population
- Reference Values for Plasma Dipeptidyl Peptidase IV Activity and Their Association with Other Laboratory Parameters
- Influence of Index of Individuality on False Positives in Repeated Sampling from Healthy Individuals
- Regional Reference Values for some Quantities Measured with the ADVIA Centaur Analyser. A Model of Co-operation between the In Vitro Diagnostic Industry and Clinical Laboratories
- Tissue Polypeptide-Specific Antigen (TPS) Concentrations in Cerebrospinal Fluid in Patients with Breast Cancer Metastases in the Central Nervous System
- The Measurement of Anti-Hepatitis C Virus Antibody in Sera Using a New Generation Immunoassay
- Quality Specifications for Cardiac Troponin Assays
- IFCC News January 2001
