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Serum level of orexin-A, leptin, adiponectin and insulin in north Indian obese women.

BACKGROUND AND AIMS: Obesity is regulated by different metabolic factors like leptin, adiponectin insulin and neuropeptide orexin-A. The aim of this study is to assess the role of these hormones and their interrelationship with obesity in north Indian women.

METHOD: A total of 168 obese women with Body Mass Index (BMI)>30kg/m2 and 150 lean women (BMI<25kg/m2 ) as control were recruited in this study. Women with obesity were further subdivided into two groups according to their BMI, 71 overweight women with the BMI 25-29.9kg/m2 (mean±S.D: 27.87±0.71) and the 97 obese women with BMI>30kg/m2 (34.68±1.90). Orexin -A, leptin and adiponectin were estimated using quantitative sandwich enzyme linked immunoassay and insulin was estimated by using an immuno-radiometric assay.

RESULT: Orexin -A and adiponectin level were significantly lower however, leptin and inulin level were significantly higher in obese women as compared with control group. Further, the one- way group analysis showed that the orexin -A and adiponectin level were significantly lower but leptin and insulin level was significantly higher in obese women as compared to overweight and control group respectively.

CONCLUSION: Result showed that the level of adiponectin, leptin, orexin-A and insulin play an important role in the regulation of energy expenditure. In obesity, the activity of these peptides is disturbed.

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