Assessment of age-related changes in heritability and IGF-1 gene effect on circulating IGF-1 levels

The effect of TRX exercises on serum levels of IGF-1 and cortisol and some health-related physical factors in active women

Background: The most important anabolic and catabolic hormones which levels are altered by resistance training are IGF-1 and cortisol, respectively. The purpose of the present study was to investigate the effect of total body resistance training (TRX) on serum levels of IGF-1, cortisol and some health-related physical factors in active women.   Materials and methods: In this study, 20 active wo...

Genetic and environmental components of interindividual variation in circulating levels of IGF-I, IGF-II, IGFBP-1, and IGFBP-3.

We assessed the magnitude of the genetic component in the variation of circulating levels of insulin-like growth factors I and II (IGF-I and IGF-II), and their binding proteins IGFBP-1 and IGFBP-3 by measuring their serum concentrations in 32 monozygotic and 47 dizygotic adult twin pairs of the same sex. The intrapair correlation for the IGF-I levels was r = 0.41 (P < 0.009) for monozygotic twi...

Age-related changes in IGF-1 expression in submandibular glands of senescence-accelerated mice.

Saliva is known to play important roles in such functions as swallowing, mastication, speech, and taste. Furthermore, salivary glands synthesize and secrete a number of growth factors involved in cell/tissue homeostasis. It has been demonstrated that IGF-1, which is structurally analogous to insulin, has been shown to be expressed in mouse submandibular glands, and that IGF-1 stimulates DNA syn...

Effect of IGF-1 on Expression of GH Receptor, IGF-1, IGF-1 Receptor, KAP3.2 and KAP6-1 mRNA in the Skin of Sheep

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 (...

IGF-1 Gene Polymorphism and Weight-Related Analysis