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  • Title: Plasma adiponectin levels are related to obesity, inflammation, blood lipids and insulin in type 2 diabetic and non-diabetic Trinidadians.
    Author: Nayak BS, Ramsingh D, Gooding S, Legall G, Bissram S, Mohammed A, Raychaudhuri A, Sahadeo B, Pandohie V, Figaro K.
    Journal: Prim Care Diabetes; 2010 Oct; 4(3):187-92. PubMed ID: 20580627.
    Abstract:
    AIMS: To determine the relationship between plasma adiponectin levels and obesity, inflammation, blood lipids and insulin resistance in type 2 diabetics (T2DM) and non-diabetics in a patient population in Trinidad. METHODS: A cohort study of a total of 126 type 2 diabetic (42 males and 84 females) and 140 (43 males and 97 females) non-diabetic public clinic attendees were assessed between December 2008 and July 2009. Along with clinical history and anthropometry, adiponectin, TNF-α, IL-6, CRP, lipid profile, glucose, and insulin were measured in fasting blood samples and insulin resistance (HOMA-IR) was calculated. RESULTS: Diabetics had higher (p<0.05) glucose, insulin, HOMA-IR, triglycerides (TG), VLDL and systolic blood pressure than non-diabetics, but lower (p<0.05) HDL and adiponectin levels. Adiponectin levels were lower (p<0.05) in obese than in non-obese individuals regardless of diabetic status. There were significant gender differences in HDL, LDL and TG. Among non-obese persons, adiponectin correlated negatively with triglycerides (r=-0.280; adiponectin), IL-6 (r=-0.216; p<0.005), HOMA-IR (r=-0.373; p=000) and positively correlated with HDL (r=0.355; p=0.000). Diabetic status (p=0.025), TNF-α (p=0.048) and BMI (p=0.027) were identified as useful predictors of adiponectin by multiple linear regression methods. In addition binary logistic regression analysis found glucose (p=0.001) and adiponectin (p=0.047) to be useful indicators of type 2 diabetes. CONCLUSIONS: Adiponectin decreases with increasing adiposity and insulin resistance. Adiponectin and TNF-α appear to be related to differences in the insulin mediated glucose turnover.
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