RESUMEN
The identification of leptin allowed the discovery of a new endocrine system. This major adipokine controlling energy homeostasis is also involved in the regulation of neuroendocrine function and fertility. Unfortunately, leptin is not able to treat common obesity, which associates hyperleptinemia and resistance to the hormone. Conversely, treatment with recombinant leptin is effective in situations of leptin deficiency. Several pathophysiological situations associated with adipose tissue dysfunctions and abnormal regulation of leptin secretion are discussed in this review. The advantage of the potential use of the leptin assay in some pathophysiological conditions is proposed.
Asunto(s)
Leptina/fisiología , Adipoquinas/fisiología , Tejido Adiposo/metabolismo , Tejido Adiposo/fisiopatología , Animales , Homeostasis/fisiología , Humanos , Obesidad/metabolismo , Obesidad/fisiopatología , Vías Secretoras/fisiologíaRESUMEN
Adiponectin is a major adipokine involved in energy homeostasis that exerts insulin-sensitizing properties. The level of adiponectin is reduced in situations of insulin resistance and is negatively associated with several pathophysiological situations including abdominal obesity, metabolic syndrome, steatosis and non-alcoholic steatohepatitis, type 2 diabetes, some cancers and cognitive diseases. These aspects are discussed in this review.