Growth hormone

Growth hormone (GH), also known as somatotropin (or as human growth hormone HGH or hGH in its human form), is a peptide hormone that stimulates growth, cell reproduction, and cell regeneration in humans and other animals. It is thus important in human development. GH also stimulates production of IGF-1 and raises the concentration of glucose and free fatty acids.

Structure and synthesis

GH is a 191-amino acid, single-chain polypeptide that is synthesized, stored and secreted by somatotropic cells within the lateral wings of the anterior pituitary gland.

Function

A critical and complex regulatory system exists for GH. GH is made by the anterior pituitary gland, is released into the blood stream, and then stimulates the liver to produce IGF-1. IGF-1 then stimulates systemic body growth, and has growth-promoting effects on almost every cell in the body, especially skeletal muscle, cartilage, bone, liver, kidney, nerves, skin, hematopoietic cell, and lungs.

Clinical significance

GH can be used clinically to treat children's growth disorders and adult growth hormone deficiency. In recent years, replacement therapies with human growth hormones (hGH) have become popular in the battle against aging and weight management.

See also

• Growth hormone therapy
• Growth hormone treatment
• Growth hormone deficiency
• Growth hormone in sports

References

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Growth_hormone

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  Hormonal regulation of growth
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  Endocrine growth regulation