Insulin like growth factor-1 IGF

Studies with fenretinide in woman with stage I breast cancer did not show an overall effect of decreasing the risk of contralateral breast cancer. A protective effect could only be observed in premenopausal women, probably due to the modulation of the insulin-like growth factor 1 (IGF-1) by fenretinide in this population. 

Kanagaraj, P, MR Vijayababu, B Ravisankar, J Anbalagan, MM Aruldhas, and J Aranakaran. 2007. Effect of lycopene on insulin-like growth factor-1, IGF binding protein-3, and IGF type-1 receptor in prostate cancer cells. 7 Cancer Res Clin Oncol 133 351-359. 

Li, L, H Ya, F Schumacher, G Casey, and JS Witte. 2003. Relations of serum insulin-like growth factor-1-(IGF-1) and IGF binding protein-3 to risk of prostate cancer(United States). Cancer Causes Control 14 721-726. 

Human growth hormone (hGH) is a polypeptide with 191 amino acids. It is secreted by the pituitary gland. This hormone stimulates the production of insulin-like growth factor-1 (IGF-1) from the liver. Most of the positive effects of hGH are mediated by the IGF-1 system, which also includes specific binding proteins. 

Growth hormone (GH, somatotropin) Growth hormone-releasing hormone (GHRH) (+) Somatostatin (-) Liver, muscle, bone, kidney, and others Insulin-like growth factor-1 (IGF-1)... 

Insulin-like growth factor 1 (IGF-1) induced twist expression is... 

Insulin-like growth factor-1 (IGF-1) is a peptide, 7649 Da, with structural homology to proinsulin. It binds preferentially to IGF-1 receptors on the surface of target cells. It has a lower affinity for insulin receptors. The receptors for insulin and IGF-1 share some structural and functional homology. IGF-1 is produced in the liver and in other organs in response to growth hormone action. IGF-1 that reenters the circulation is bound to... 

Obal F, Jr., Kapas L, Bodosi B, Krueger JM. Changes in sleep in response to intracerebral injection of insulin-like growth factor-1 (IGF-1) in the rat. Sleep Res Online 1998 1 87-91. 

Jansson, A., Meldal, M., and Bock, K. (1992) Solid-phase synthesis and characterization of O-dimannosylated heptadecapeptide analogues of human insulin-like growth factor 1 (IGF-1). J. Am. Chem. Soc. Perkin Trans I., 1699-1707. 

Growth hormone requires mediation by somatomedins for many of its actions. These are chiefly formed in the liver, including the important somatomedin C (= insulin-like growth factor 1, IGF-1). Pegvisomant is a newly developed antagonist at the GH receptor and inhibits the production of IGF-1. 

The anterior pituitary releases GH in 6 to 8 pulsatile bursts over a 24 h period the major portion is released just prior to deep sleep. Its secretion is controlled by hypothalamic peptides GH-releasing hormone stimulates GH secretion, while somatostatin inhibits it. GH stimulates the synthesis of insulin-like growth factor-1 (IGF-1 somatomedin C) mainly, but not solely, in the liver. GH and IGF-1 receptors are widely scattered throughout the body, and both hormones exert important metabolic actions in various tissues, especially muscle and bone. 

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