نتایج جستجو برای: lh 0
تعداد نتایج: 587301 فیلتر نتایج به سال:
The effects of prolactin (PRL), growth hormone (GH) and luteinizing hormone (LH) on testicular LH receptor concentration and on testosterone synthesis in response to LH (testicular responsiveness) was studied in mature intact and hypophysectomized rats. Hypophysectomy reduced LH receptor concentration by 80 o/o and testicular responsiveness to LH by 70a/o , 7 days after surgery. Daily treatment...
Five intact male mongrel dogs, characterized by an episodic secretory pattern of LH and normal serum testosterone concentrations, were actively immunized against LHRH by subcutaneous injections of 200 micrograms of a LHRH-human serum albumin conjugate at 0, 4, and 8 weeks. After 12 weeks, two dogs having the highest antibody titers to LHRH (25% and 51% binding of 125I-LHRH in serum diluted 1:10...
OBJECTIVES The purpose of this study was to determine the age-specific reference ranges for some important male sex steroid hormones, prostate-specific antigen (PSA), insulin-like growth factor-1 (IGF-1), and IGF binding protein-3 (IGFBP-3), for the Kuwaiti population. SUBJECTS AND METHODS Blood samples were taken from 398 consenting, fasting, healthy Kuwaiti males aged 15-80 years between 8....
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زمینه و هدف: مطالعات نشان میدهد که قرارگیری در معرض بخار رنگ و مواد شیمیایی اختلالهای فیزیولوژیک را در پی دارد. هدف از این مطالعه بررسی اثرات استنشاق بخارات رنگروغنی ساختمان بر روی سطح سرمی هورمونهای LH، FSH، استرادیول و ۱٧آلفا هیدروکسی پروژسترون در موشهای صحرایی ماده است. مواد و روشها: در این مطالعه تجربی، ۱۵ سر موش صحرایی ماده نژاد ویستار بهطور تصادفی به گروههای کنترل و مواجهه با ۱ و ...
Genetic selection in commercial rabbit lines based on litter size has positively improved the number of kits suckling, presumably to weaning. Although it been proven that energetic balance primiparous does is due need satisfy pregnancy, lactation and growth requirements, adjustment from 7 12 applied as a routine farms. The suckling stimulus provokes prolactin (PRL) secretion, which turn can mod...
Background. Studies have reported a higher preva-lence of hypogonadism in men with type 2 diabetes mellitus (T2DM) than non-diabetic men. The pattern T2DM using gonado-tropin-releasing hormone (GnRH) stimulation test Sub-Saharan Africa is unknown. Objective. This study was conducted to determine the prevalence and Nigerian T2DM. Methods. A cross-sectional involving 358 179 as controls. Androgen...
The objective of this study was to determine whether there were doses at which the synthetic progestin, norgestomet, could mimic midluteal phase concentrations of progesterone in regulating the secretion of LH and 17p-estradiol in bovine females. Heifers were randomly assigned to one of five groups to receive: 1) one (Norg, n = 5), 2) two (2Norg, n = 5), 3) four (4Norg, n = 5), or 4) eight (8No...
Replacing GnRH agonist cotreatment for the prevention of a premature rise in LH during ovarian stimulation for in vitro fertilization (IVF) by the late follicular phase administration of GnRH antagonist may render supplementation of the luteal phase redundant, because of the known rapid recovery of pituitary function after antagonist cessation. This randomized two-center study was performed to ...
This study aimed to evaluate the effects of betacarotene (BC) supplementation on ovulation rate (OR) and luteinizing hormone (LH) secretion in adult goats during the breeding season. Additionally, total ovarian activity (TOA) comprising the total number of ultrasonographically detectable antral follicles (AF) and corpora lutea (OR) was also assessed. In early October, adult goats [n=22, 3.5 yea...
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