摘要

obesity and its comorbidities have been associated with a low grade proinflammatory state, in which the adipose tissue seems to be involved. in fact, this tissue produces different proinflammatory cytokines, such as il-6 and others. high circulating concentrations of il-6 have been related to high body mass index, to diabetes mellitus type 2, to lipid abnormalities and to high blood pressure. there are some studies, which reported a relationship between il-6 and energy metabolism, so this cytokine and its -174gc gene polymorphism could be factors involved in the development of obesity. different studies have associated the g allele of the il-6 gene with obesity, with insulin resistance and with different cardiovascular risk factors. however, other published reports have associated the c allele of this gene to these metabolic disturbances and pathologies. this paper reviews recently published evidences about il-6 and its physiopathological involvement in obesity and comorbidities, with emphasis on the role of the -174gc polymorphism in the aetiology of these disturbances, in which obesity is a major risk factor.

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