Insulin-like growth factor-I receptor (IGF-IR) and its signaling pathways play an important role in cell proliferation, growth, differentiation and survival. IGF-axis controls cellular, physiological and metabolic activity of several cell types including cardiomyocytes. IGF-I acts through its signaling receptorIGF-IR to induce physiological or adaptive hypertrophic growth. Various reports also ...

Thirty-six healthy and similar Chinese Merino sheep were selected and divided into six groups at random. The treatment group was injected intradermally with 0.5 mL IGF-1 (10ng/mL). Treatment skin tissue of sheep were sampled respectively for 0,3,6,9,12 and 50 days and the skin expression of growth hormone receptor (GHR), insulin-like growth factor1 (IGF-1), insulin-like growth factor receptor (...

Patients with type 2 diabetes (T2D) are at increased risk of developing cancer. This evidence arises from numerous epidemiologic studies that relate a positive association between T2D and cancer. In-vitro and several in-vivo experiments have attempted to discern the potential mechanistic factors involved in this relationship. Candidates include hyperinsulinemia, insulin-like growth factor-1 (IG...

AIM To contribute to the debate about whether growth hormone (GH) and insulin-like growth factor 1 (IGF-1) act independently on the growth process. METHODS To describe growth in human and animal models of isolated IGF-1 deficiency (IGHD), such as in Laron syndrome (LS; primary IGF-1 deficiency and GH resistance) and IGF-1 gene or GH receptor gene knockout (KO) mice. RESULTS Since the descri...

Hypoxia-inducible factor 1 (HIF-1) activates transcription of genes encoding glucose transporters, glycolytic enzymes, vascular endothelial growth factor, and other proteins involved in O2 homeostasis and tumor progression. The expression and transcriptional activity of the HIF-1alpha subunit is regulated by the cellular O2 concentration. We demonstrate that insulin, insulin-like growth factor ...

abstract introduction: there is limited knowledge available on the metabolism of glucose in the brain, an insulin insensitive organ. insulin receptors hybridize with insulin like growth factor receptor (igf-i) to transduce the signals in different areas of the brain. in this article we aimed at investigating whether the expression of igf-i receptor and igf-i binding proteins (igfbp1) is changed...