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Insulin-like growth factor 2 (IGF-2) is one of three protein hormones that share structural similarity to insulin. The MeSH definition reads: "A well-characterized neutral peptide believed to be secreted by the liver and to circulate in the blood. It has growth-regulating, insulin-like and mitogenic activities.
There are a variety of rare diseases that resemble GH deficiency, including the childhood growth failure, facial appearance, delayed bone age, and low insulin-like growth factor-1 (IGF-1) levels. However, GH testing elicits normal or high levels of GH in the blood, demonstrating that the problem is not due to a deficiency of GH but rather to a ...
Insulin-like growth factor 2 (IGF-2, at times IGF-II) is thought to be a primary growth factor required for early development while IGF-1 expression is required for achieving maximal growth. Gene knockout studies in mice have confirmed this, though other animals are likely to regulate the expression of these genes in distinct ways.
Laron syndrome (LS), also known as growth hormone insensitivity or growth hormone receptor deficiency (GHRD), is an autosomal recessive disorder characterized by a lack of insulin-like growth factor 1 (IGF-1; somatomedin-C) production in response to growth hormone (GH; hGH; somatotropin). [6]
Growth hormone deficiency is almost certain if all other pituitary tests are also abnormal, and insulin-like growth factor 1 (IGF-1) levels are decreased. If this is not the case, IGF-1 levels are poorly predictive of the presence of GH deficiency; stimulation testing with the insulin tolerance test is then required.
IGF: insulin-like growth factor IgG: immunoglobulin G: IgG4-RD: IgG4-related disease: IgG4-RKD: IgG4-related kidney disease IgG4-ROD: IgG4-related ophthalmic disease: IgG4-TIN: IgG4-related tubulointerstitial nephritis IgM: immunoglobulin M: IGT: impaired glucose tolerance: IHC: immunohistochemistry: IHD: ischaemic heart disease: IHPS ...
The diagnosis of growth hormone deficiency is a multi-step procedure that involves pituitary MRI, biochemical testing (growth hormone stimulation tests and measurement of IGF-1/IGFBP3), clinical and auxological examination, and genetic test results.
The protein encoded by this gene is a serum protein that binds insulin-like growth factors, increasing their half-life and their vascular localization. Production of the encoded protein, which contains twenty leucine-rich repeats, is stimulated by growth hormone. Three transcript variants encoding two different isoforms have been found for this ...