Abstract
Insulin and insulin-like growth factor I (IGF-I) and II (IGF-II) are structurally, functionally, and genetically related. 1–3 Of the three, insulin is the classical endocrine agent. It is synthesized by and released from the pancreatic beta-cell into the circulation, and it regulates cellular metabolism in a number of target tissues. The IGFs, on the other hand, are synthesized in numerous tissues and may act locally, resulting in mitogenesis, growth promotion, insulin-like metabolic effects, and potentially other bioeffects. In addition to these paracrine and/or autocrine modes of cellular regulation, IGF-I may act as an endocrine agent when its synthesis by and release from the liver is stimulated by growth hormone (GH). The circulating IGF-I then stimulates longitudinal growth and body weight gain, thus, giving rise to the original descriptive term, somatomedin-C.
Original language | English (US) |
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Title of host publication | Insulin-Like Growth Factors |
Subtitle of host publication | Molecular and Cellular Aspects |
Publisher | CRC Press |
Pages | 271-303 |
Number of pages | 33 |
ISBN (Electronic) | 9781040294499 |
ISBN (Print) | 9780849357121 |
DOIs | |
State | Published - Jan 1 2024 |
Externally published | Yes |
ASJC Scopus subject areas
- General Medicine
- General Biochemistry, Genetics and Molecular Biology
- General Agricultural and Biological Sciences