نتایج جستجو برای: هورمون رشد انسانی hgh
تعداد نتایج: 113131 فیلتر نتایج به سال:
کوتاه شدن تلومرها که باعث کاهش ظرفیت تکثیری سلولها می شود، از ناتوانی پلیمراز برای تکثیر انتهای ناکامل کروموزوم ها ناشی می شود. نقش تلومراز، اضافه کردن توالی های تکراری است که از کوتاه شدن کروموزوم ها جلوگیری می کند. دربیشتر سلولهای طبیعی انسانی، بر خلاف سلولهای توموری (که دارای تلومراز می باشند)، این کوتاه شدن تلومرها در نتیجه افزایش سن و تعداد دفعاتی که سلول تقسیم می شود، اتفاق می افتد. در ن...
The hGH-V (or hGH-2) gene codes for human placental growth hormone (hPGH). Secretion of hPGH is continuous, in contrast with the pulsed secretion of pituitary growth hormone (hGH) which it progressively replaces in the maternal bloodstream. hGH-V cDNA has previously been cloned and isolated. Analysis of its nucleotide sequence has revealed a 191-residue protein, hPGH, differing from hGH at 13 p...
The human growth hormone (hGH-N) and the closely related human growth hormone-variant (hGH-V) genes differ in their patterns of splice-site selection. In 9% of hGH-N transcripts exon 2 is spliced to an alternative acceptor site located 45 bases within exon 3. mRNA spliced in this manner encodes a 20-kDa hGH-N isoform instead of the normal 22-kDa hGH-N. The hGH-V transcript fails to utilize this...
Using agro-infiltration technique, we have transiently expressed human Growth Hormone (hGH) in tobacco(Nicotiana tobacum), potato (Solanum tuberosum) and lettuce (Lactuca sativa) leaves. Out of three differentinoculation times used for infiltration in our study, it was seen that highest level of hGH expression wasachieved when leaves were infiltrated for 35 min. The presence o...
A 10-year-old child with idiopathic growth hormone deficiency was treated with recombinant methionyl human growth hormone (m-hGH, Somatonorm) at a dose of 14 IU/week. Height increased from 122.3 to 126.5 cm during the first 9 months of treatment (5.6 cm/y), but only from 126.5 to 126.6 cm during the next 3 month of treatment (0.4 cm/y). Anti-hGH antibody was detected at 2 months of treatment, r...
Human growth hormone (hGH) gene expression and regulation by thyroid and glucocorticoid hormones were examined after its stable introduction into rat anterior pituitary tumor cells. Transcripts from the hGH gene were correctly initiated and could be positively regulated by glucocorticoids. In contrast to the endogenous rat GH gene and a transfected, modified rat GH gene, the hGH gene was negati...
ACONSEQUENCE OF THE COMMITTEE ON OVERsight and Government Reform’s recent hearing on the Mitchell Report on steroid and growth hormone (hGH) use was recognition that the misguided use of hGH by professional athletes and entertainers contributes to the far more frequent and increasing problem of anti-aging clinics, Web sites, compounding pharmacies, and producers selling the drug to the general ...
Human growth hormone (hGH) gene deletion (6.7 to 7.6 kb) is one of the causes of isolated growth hormone deficiency (IGHD), named IGHD IA. IGHD IA, however, only accounts for about 10% of the total IGHD patients. Most IGHD is caused by unknown mechanisms. Here, hGH gene 5' sequences in three IGHD patients without hGH gene deletion were analysed to see if there was any mutation hindering the exp...
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