Adiponectin, the missing link in insulin resistance and obesity

Clinical Nutrition : Official Journal of the European Society of Parenteral and Enteral Nutrition
Mercedes Gil-CamposAngel Gil

Abstract

Obesity and insulin resistance have been recognised as leading causes of major health issues, particularly diabetes type 2 and metabolic syndrome. Although obesity, defined as excess body fat, is frequently accompanied by insulin resistance, diabetes, metabolic syndrome and cardiovascular diseases, the molecular basis for the link between obesity and those diseases has not yet been clarified. Adipose tissue expresses various secretory proteins, including leptin, tumour necrosis factor-alpha and adiponectin, which may be involved in the regulation of energy expenditure, lipid metabolism and insulin resistance. The aim of this study is to provide an overview of the metabolic alterations occurring in insulin resistance as well as to review the biological roles of adiponectin, particularly in the regulation of fatty acid oxidation and insulin action. Adiponectin is the most abundant gene product in adipose tissue and accounts for 0.01% of total plasma protein. Plasma adiponectin level is decreased in obesity, both in children and adults, and it is negatively associated to plasma insulin and positively associated to plasma triglycerides. Low levels of adiponectin decreases fatty acid oxidation in muscle. Recent data have demonstrate...Continue Reading

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