Growth hormone promotes skeletal muscle cell fusion independent of insulin-like growth factor 1 up-regulation

Growth hormone promotes skeletal muscle cell fusion independent of insulin-like growth factor 1 up-regulation.

Growth hormone (GH) participates in the postnatal regulation of skeletal muscle growth, although the mechanism of action is unclear. Here we show that the mass of skeletal muscles lacking GH receptors is reduced because of a decrease in myofiber size with normal myofiber number. GH signaling controls the size of the differentiated myotubes in a cell-autonomous manner while having no effect on s...

Insulin-like growth factor 1 (IGF-1): a growth hormone.

AIM To contribute to the debate about whether growth hormone (GH) and insulin-like growth factor 1 (IGF-1) act independently on the growth process. METHODS To describe growth in human and animal models of isolated IGF-1 deficiency (IGHD), such as in Laron syndrome (LS; primary IGF-1 deficiency and GH resistance) and IGF-1 gene or GH receptor gene knockout (KO) mice. RESULTS Since the descri...

Insulin-Like Growth Factor 1 Promotes Cord

Growth Hormone and Insulin-Like Growth Factor-1.

Human growth hormone (GH) was first isolated from the human pituitary gland in 1945 and found to promote the growth of children with hypopituitarism. Since the formation of the World Anti-Doping Association, human GH has appeared on the list of forbidden substances. There is a significant amount of anecdotal evidence that human GH is misused by athletes to enhance performance, and there have be...

evaluation of insulin-like growth factor-1 and its impact on growth hormone therapy in growth hormone-deficient indian children