Suppression of Luteinizing Hormone and Testosterone Secretion in Bulls Following Adrenocorticotropin Hormone Treatment1
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چکیده
منابع مشابه
Gonadotropin releasing hormone-induced change in serum luteinizing hormone, testosterone and androstenedione in bulls, steers and steers given testosterone.
Two experiments were conducted to determine the effect of gonadal hormones on LH release by successive injections of Gonadotropin Releasing Hormone (GnRH). In the first experiment 1 month-old Holstein bulls were used. Bulls were assigned to be: 1) left intact (n=5), 2) castrated (n=6), or 3) castrated and given 10 mg testosterone thrice daily for 15 days (n=4). All animals received three intram...
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Polydimethylsiloxane (Silastic) capsules containing crystalline testosterone were implanted subcutaneously in castrate lambs and evaluated for their ability to (1) provide stable, physiological concentrations of serum testosterone and (2) regulate secretion of LH and FSH. Testosterone was nondectable (< .2 ng/ml) between 12 and 24 weeks of age in the serum of castrate lambs implanted with empty...
متن کاملHypothalamic KiSS1/GPR54 Gene Expressions and Luteinizing Hormone Plasma Secretion in Morphine Treated Male Rats
Objective The inhibitory effects of Morphine and the stimulatory influence of kisspeptin signaling have been demonstrated on GnRH/LH release. Hypothalamic kisspeptin is involved in relaying the environmental and metabolic information to reproductive axis. In the present study the role of kisspeptin/GPR54 signaling system was investigated on relaying the inhibitory effects of morphine on LH horm...
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Seven yearling Holstein bulls were given 0, 20, 40, 60, 80, 100 and 200 micrograms NIH-LH-B9 during a 7-day complete Latin square design experiment. Treatments were administered via jugular cannulas at 0900 hr, and blood was collected at 60, 30 and 0 min before treatment, at 15-min intervals for 3 hr after treatment and at 30-min intervals from 3 to 7 hr after treatment. Luteinizing hormone (LH...
متن کاملPulsatile Luteinizing Hormone Secretion in Patients
The physiological and pathophysiological role of cortisol in pulsatile LH release was investigated in 14 patients (5 men, 6 premenopausal women, and 3 postmenopausal women) with Addison’s disease. The explicit effect of cortisol in relation to the effect of corticotropin-releasing factor (CRF), ACTH, and opioids was ensured by hypo-, normo-, and hypercortisolism. Hypocortisolism was obtained by...
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ژورنال
عنوان ژورنال: Biology of Reproduction
سال: 1982
ISSN: 0006-3363,1529-7268
DOI: 10.1095/biolreprod26.2.305