Endocrine Abstracts

Aim: HMβ is a metabolite of leucine commonly used by athletes and in medical practice in order to increase muscle mass and/or minimize protein degradation. We have previously shown that chronic intake of HMβ increases GH synthesis and secretion in rats, which might account to its anabolic effect. However HMβ-treated rats, although normoglycemic, exhibited hyperinsulinemia, suggesting an apparent insulin resistance (IR) state. The present study attempted to inves...

Journal of Molecular Endocrinology, 2019, 64(1): 13–27 (DOI: https://doi.org/10.1530/JME-19-0158)...

Introduction: High circulating levels of some but not all unsaturated fatty acids (UFAs) can be related with reduced insulin sensitivity and glucose uptake in skeletal muscle. The real mechanisms by which UFAs impair the insulin sensitivity need to be clarified; nevertheless the UFA’s effects in the regulation of activity and/or expression of some transcriptional factors such as, nuclear factor κB (NFκB), hypoxia inducible factor-1a (HIF-1a), peroxisome prolifer...