BACKGROUND Although the beneficial effects of resistance training (RT) on the cardiovascular system are well established, few studies have investigated the effects of the chronic growth hormone (GH) administration on cardiac remodeling during an RT program. OBJECTIVE To evaluate the effects of GH on the morphological features of cardiac remodeling and Ca2+ transport gene expression in rats su...

We investigated the direct effects of growth hormone (GH) replacement therapy (GH-RT) on hematopoiesis in children with GH deficiency (GHD) with the special emphasis on proliferation and cell cycle regulation. Peripheral blood (PB) was collected from sixty control individuals and forty GHD children before GH-RT and in 3rd and 6th month of GH-RT to measure hematological parameters and isolate CD...

The present work describes analysis of the growth hormone gene (GH) expression in non-matured and in vitro matured bovine oocytes as well as zygotes after in vitro fertilization. The Leu/Val polymorphism described in the 5th exon of the bovine GH gene was applied to investigate the expression of genetic variants in the analyzed material. Experiments were performed on oocytes collected from hete...

Circulating insulin-like growth factor 1 (IGF-1) has been shown to act as a negative feedback regulator of growth hormone (GH) gene expression; however, the mechanism of this negative feedback is poorly understood. Activation and regulation of GH gene expression require the binding of the transcription factor POU1F1 to the GH promoter along with cyclic AMP (cAMP) response element binding protei...

This report reviews the current knowledge on the biosynthesis, regulation and secretion of Growth Hormone (GH) and Insulin-like Growth factor-I (IGF-I). Variants of human GH, molecular size variants as well as charge variants, and the GH binding protein will be discussed, and the regulation of expression of the hGH gene is reviewed. IGF-I expression, regulation of the igf-I gene and secretion i...

Pituitary growth hormone (GH) is not a single molecular species, but a whole set of similar molecules, the individual specific characteristics of which constitute the polymorphism of this hormone. The present paper deals mainly with various forms of human GH, called "variants", and touches on this polymorphism in other species as well. The 22 K variant (MW = 22,000 daltons) is the predominant f...

Growth hormone (GH) is required for the terminal differentiation of preadipose Ob1771 cells that have entered the differentiation program as evidenced by the expression of early marker genes (pOb24 and lipoprotein lipase). Induction of c-fos mRNA within 15 min and induction of insulin-like growth factor I mRNA within a few hours take place in response to GH. The role of GH is mediated, at least...

Growth hormone (GH) is known to interact with adipose tissue and to induce lipolysis. Adipocytes produce leptin which regulates appetite and energy expenditure. In order to elucidate the role of GH in leptin production, we studied the effect of GH on leptin gene expression and body fat in fatty Zucker rats, a model of obesity with resistance to both leptin and insulin. Recombinant human GH admi...

Liver sexual gene dimorphism, which depends mainly on specific patterns of GH secretion, may underlie differential susceptibility to some liver diseases. Because GH and prolactin secretion are regulated by dopaminergic pathways, we studied the participation of brain and lactotrope dopamine 2 receptors (D2Rs) on liver gene sexual dimorphism, to explore a link between the brain and liver gene exp...