Decreased serum interleukin-17 and increased transforming growth factor-β levels in subjects with metabolic syndrome (Chennai Urban Rural Epidemiology Study-95).
The term metabolic syndrome (MS) refers to a conglomeration of many metabolic disorders. Recent studies suggest that inflammation plays a vital role in MS. There are however no data available on the recently characterized novel T-cell-derived cytokine interleukin (IL)-17 in MS; studies on the anti-inflammatory cytokine transforming growth factor (TGF)-β are also limited. The aim of the study was to look at IL-17 and TGF-β levels in subjects with and without MS. The study subjects were recruited from the Chennai Urban Rural Epidemiology Study (CURES), a population-based study in Chennai (formerly Madras) in southern India. Group 1 consisted of subjects without MS (non-MS) (n = 98) and group 2 consisted of subjects with MS (n = 156). MS was defined using the National Cholesterol Education Program Adult Treatment Panel III criteria modified for waist, according to the World Health Organization Asia Pacific guidelines. Serum IL-17 and TGF-β levels were estimated by enzyme-linked immunosorbent assay. Interleukin-17 levels were decreased (P < .001) and TGF-β levels (P < .001) were increased in subjects with MS compared to those without. With an increase in the number of metabolic risk factors, the IL-17 levels showed a decline, whereas the TGF-β levels showed an increase (P < .001). With respect to individual components of MS, TGF-β and IL-17 showed a significant association with blood pressure and blood glucose even after adjusting for age and sex. We report that IL-17 levels are decreased, whereas TGF-β levels are increased, among Asian Indians with MS.
Surendar
Jayagopi
J
Madras Diabetes Research Foundation, Chennai-600086, India.
Aravindhan
Vivekanandhan
V
Rao
Maradana Muralidhara
MM
Ganesan
Anbazhagan
A
Mohan
Viswanathan
V
D000328:Adult; D000886:Anthropometry; D001786:Blood Glucose / Q000378:metabolism; D002784:Cholesterol / Q000097:blood; D008076:Cholesterol, HDL / Q000097:blood; D005260:Female; D006801:Humans; D007194:India / Q000453:epidemiology; D020381:Interleukin-17 / Q000097:blood*; D016015:Logistic Models; D008297:Male; D024821:Metabolic Syndrome / Q000097:blood* / Q000453:epidemiology; D008875:Middle Aged; D012424:Rural Population; D016212:Transforming Growth Factor beta / Q000097:blood*; D014280:Triglycerides / Q000097:blood
D001786:Blood Glucose; D008076:Cholesterol, HDL; D020381:Interleukin-17; D016212:Transforming Growth Factor beta; D014280:Triglycerides; D002784:Cholesterol