[Insulin resistance physiopathology]

Area of Science:

• Endocrinology
• Metabolic Research

Background:

• Insulin resistance is a key factor in metabolic syndrome.
• Visceral adiposity is linked to adverse metabolic parameters.
• Cortisol's role as an insulin antagonist is implicated in metabolic syndrome.

Purpose of the Study:

• To explore biological mediators of insulin resistance.
• To investigate the role of intra-cellular cortisol in metabolic syndrome.
• To examine genetic and intrauterine factors in metabolic syndrome pathogenesis.

Main Methods:

• Review of biological mediators released by adipocytes (free fatty acids, TNF-alpha).
• Analysis of cortisol's antagonistic effects on insulin and its link to obesity.
• Examination of genetic factors including gene mutations/polymorphisms (adiponectin, PPARgamma2).
• Consideration of epidemiological evidence on intrauterine programming.

Main Results:

• Free fatty acids and tumor necrosis factor-alpha are identified as mediators of insulin resistance.
• Excess cortisol is associated with enhanced visceral obesity and insulin resistance.
• Gene polymorphisms and intrauterine factors offer insights into metabolic syndrome pathogenesis.

Conclusions:

• Adipocyte-derived factors, cortisol, and genetic predispositions contribute to insulin resistance and metabolic syndrome.
• Intrauterine factors may influence individual susceptibility to metabolic syndrome.
• Further research into genetic and environmental interactions is warranted for understanding metabolic syndrome.