Growth hormone secretagogue receptor

Growth hormone secretagogue receptor (GHSR), also known as the ghrelin receptor, is a G protein-coupled receptor that binds ghrelin, the "hunger hormone". GHSR is expressed in the pituitary gland, hypothalamus, and several peripheral tissues, including the stomach and pancreas.

Function

GHSR is involved in a variety of physiological processes. Its primary function is to regulate growth hormone release from the pituitary gland. When ghrelin binds to GHSR, it stimulates the release of growth hormone, which promotes cell growth and metabolism.

GHSR also plays a role in energy homeostasis. It is involved in the regulation of food intake, body weight, and glucose metabolism. In addition, GHSR is implicated in cardiovascular function, learning and memory, and gastrointestinal motility.

Clinical significance

Mutations in the GHSR gene can lead to a variety of health conditions. For example, loss-of-function mutations can result in short stature due to insufficient growth hormone release. On the other hand, gain-of-function mutations can cause excessive growth hormone release, leading to gigantism or acromegaly.

GHSR is also a potential therapeutic target for obesity and type 2 diabetes. Drugs that block GHSR can reduce food intake and improve glucose metabolism, potentially helping to manage these conditions.

See also

• Ghrelin
• G protein-coupled receptor
• Growth hormone

References

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