The effects of breed and of recombinant bovine somatotropin (rbST) treatment on growth hormone gene expression were studied in young bulls. The experiment was completely randomized in a [2 x 2]-factorial arrangement, using two levels of rbST (0 or 250 mg/animal/14 days), and two breed groups (Nelore and Simmental x Nelore crossbred). A cDNA encoding Bos indicus growth hormone was cloned and seq...

The aim of this study was to investigate the potential association between growth hormone GH/AluI and growth hormone receptor GHR/AluI polymorphisms with milk yield and reproductive performances in Holstein dairy cows in Iran. Blood samples of 150 Holstein cows were collected and their genomic DNA was extracted using Gene-Fanavaran DNA extracting kit. Fragments of the 428 bp of exon 5 growth ho...

introduction intra-articular injections of platelet rich plasma (prp) for the treatment of knee osteoarthritis have been shown to reduce pain and improve joint function. the aim of this study is to examine the joint function by adding intra-articular growth hormone to platelet rich plasma. this study was performed on the individuals with knee osteoarthritis and under ultrasound guidance. conclu...

the batch fermentation production of human growth hormone (hgh) was studied in a newrecombinant escherichia coli. the effect of different levels of dissolved oxygen and glucoseconcentration on cell density and substrate utilization were evaluated. the results indicated that theoptimum level of dissolved oxygen was 25% of air saturation. the specific growth rate reached amaximum for an optimal g...

introduction: this research was aimed at examining acute responses of hormones such as growth hormone (gh), total testosterone (tt), free testosterone (ft), free fatty acid (ffa) and cortisol to resistance (r), endurance (e) and endurance-resistance (er) exercise. methods: the participants of this study were 10 healthy young men. r protocol included bench press, lateral pull down, leg extension...

The 22-KDa is the protein product of human growth hormone (hGH) gene isoform 1 of the pituitary hormone (Ahmed et. al., 1993). hGH gene was amplified with PCR from human growth hormone cDNA clone by specific designed primers containing extraterminals having Nco I and Bam HI restriction sites. The PCR product obtained was analyzed by enzyme digestion and DNA sequencing. The product was cloned in...

insulin-like growth factor-i (igf-1) is a peptide hormone which is similar in molecular structure to insulin and it is located on chromosome 5 in cattle. since the igf-1 plays an important role in the growth and development of multiple tissues, the purpose of current study was to identify the igf-1 gene polymorphism in sistani beef cattle. a total of 53 sistani beef cattle (one year) were rando...

Abstract The molecular evolution of pituitary growth hormone and prolactin in mammals shows two unusual features: episodes markedly accelerated and, some species, complex families related proteins expressed placenta resulting from multiple gene duplications. Explanations these phenomena terms physiological adaptations seem unconvincing. Here, I propose an alternative explanation, namely that ev...

Background: Ovine follicle stimulation hormone (OFSH) is a pituitary glycoprotein and belongs to the family of glycoprotein hormones. This hormone plays a key role in the function of the reproductive system: it is essential for sertoli cell function and spermatogenesis in testis and it stimulates the growth of ovulatory follicles in females. Ovine FSH hormone is a heterodimeric hormone consisti...