the insulin-like growth factor i receptor (igf-ir) plays an essential role in the establishment and maintenance of transformed phenotype. interference with the igf-ir pathway by antisense causes reversal of the transformed phenotype in many rodent and human tumor cell lines. we stably transfected the pc-3 human prostate cancer cell line with an igf-ir antisense rna expression plasmid. the numbe...

Insulin-like growth factors and insulin are phylogenetically closely related polypeptides and have many structural and biological similarities. Low levels of circulating insulin-like growth factor-I (IGF-I), diabetes and insulin resistance have all been implicated in the pathogenesis of cardiovascular disease, but the mechanisms involved are still not clear. Furthermore little is known about di...

BACKGROUND Coronary artery disease is a global health concern in the present day with limited therapies. Extensive efforts have been devoted to find molecular therapies to enhance perfusion and function of the ischemic myocardium. Aim of the present study was to look into the effects of insulin like growth factor -1 (IGF-1) on circulating angiogenic factors after myocardial ischemia in rats. ...

A defined culture medium containing insulin, insulin-like growth factor I (IGF-I) or insulin-like growth factor II (IGF-II) supported morphological development of myenteric plexus neurons derived from neonatal guinea pigs. Insulin increased neurite outgrowth 3-fold at concentrations as low as 0.2 nM. Similar significant and dose-dependent increases in neurite outgrowth were noted with IGF-I and...

In previous work, we demonstrated that a subset of carcinogen-induced rat mammary carcinomas consists of cells that are independent of growth factors strictly required by normal rat mammary epithelial (RME) cells for long-term growth in serum-free medium. Furthermore, only those tumors that expressed growth factor independence in vitro were serially transplantable in vivo. The present studies w...

Growth hormone (GH) and insulin-like growth factor 1 (IGF-1) are the most important regulators of growth, regeneration metabolism. The influence GH IGF-1 on pediatric liver transplant outcomes is mediated through body weight regulation, specific effects hepatocyte function immune system activity. In recent years, blood levels these factors life expectancy, both in healthy individuals recipients...