Results 231 to 240 of about 32,431 (267)

Localization of Growth Hormone-Releasing Hormone in the Human Hypothalamus and Pituitary Stalk*

The Journal of Clinical Endocrinology & Metabolism, 1986
The localization of the recently identified GH-releasing hormone (GHRH) in the human hypothalamus and pituitary stalk was determined by microdissection techniques and a specific RIA for GHRH. The highest concentrations of GHRH immunoreactivity (IR-GHRH) in the hypothalamus were found in the area of the infundibular nucleus (83 +/- 4 ng/mg protein ...
H, Werner, E, Okon, M, Fridkin, Y, Koch
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INHIBITION BY OESTRADIOL OF THE PITUITARY RESPONSE TO LUTEINIZING HORMONE RELEASING HORMONE IN THE DOG

Journal of Endocrinology, 1976
SUMMARY Intravenous injections of synthetic LH-RH stimulated LH secretion in male dogs. Pretreatment with 50 μg oestradiol-17β, 60 or 165 min but not 15 min before LH-RH, inhibited LH secretion. Injection of 0·1–10 μg oestradiol 165 min before administration of LH-RH, blocked LH secretion. Basal plasma LH levels before LH-RH administration were
G E, Jones, A R, Boyns
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Action of luteinizing hormone-releasing hormone and synthesis of prostaglandin in the pituitary gland

Prostaglandins, 1975
The possibility that prostaglandin E2 (PGE2) may play a role in luteinizing hormone (LH) release was examined using an in vitro model. Addition of luteinizing hormone-releasing hormone (LH-RH) to the culture medium stimulated cyclic AMP accumulation and LH-release by incubated hemipituitaries, but did not affect the level of PGE2 or prostaglandin ...
Z, Naor, Y, Koch, S, Bauminger, U, Zor
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INHIBITION BY MELATONIN OF THE PITUITARY RESPONSE TO LUTEINIZING HORMONE RELEASING HORMONE IN VIVO

Journal of Endocrinology, 1978
The rate of secretion of 17-oxosteroids by the testes of anaesthetized dogs in vivo was used as an index of LH secretion. Intracarotid injection of luteinizing hormone releasing hormone (LH-RH, 1, 5 or 10 μg/kg body wt) resulted in an increase in the testicular 17-oxosteroid secretion which was roughly proportional to the dose administered and which ...
K, Yamashita, M, Mieno, T, Shimizu, E, Yamashita   +3 more
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Growth hormone-releasing hormone and somatostatin in normal and tumoral human pituitaries

Peptides, 1991
In order to further understand the role of endogenous pituitary neuropeptides in pituitary hormonal content and secretion, GHRH, SRIH and GH contents were quantified in GH adenomas obtained from acromegalic patients with plasma GH levels either high (greater than 5 micrograms/l, range 11 to 550 micrograms/l, n = 11) or in the normal range (less than 5 ...
C, Benlot, P, Pagesy, F, Peillon, D, Joubert-Bression   +3 more
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The response of the pituitary gland to luteinizing hormone-releasing hormone in broody bantams

General and Comparative Endocrinology, 1981
The concentration of plasma LH increased significantly (P < 0.001) after an iv injection of 20 μg LHRH/kg body wt in out-of-lay, laying, incubating, and brooding bantams. The increase in out-of-lay (2.6 ± 0.4 [SEM] ng/ml, n = 12) and laying (1.8 ± 0.3 ng/ml, n = 6) birds was significantly less (P < 0.05) than in incubating (5.0 ± 0.8 ng/ml, n = 10) or ...
P J, Sharp, R W, Lea
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Extra-pituitary inhibition of testicular function by luteinising hormone releasing hormone

Nature, 1979
Luteinising hormone releasing hormone (LHRH), produced by the hypothalamus, stimulates gonadotropin production by the pituitary1–3. Paradoxically, chronic treatment with large doses of LHRH or its agonists causes a decline in testicular steroidogenesis and testicular LH/human chorionic gonadotropin (hCG) receptors; they also cause a decrease in the ...
A J, Hsueh, G F, Erickson
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Extra-pituitary action of luteinizing hormone releasing hormone on intraocular pressure

Current Eye Research, 1988
Luteinizing hormone releasing hormone (LHRH) given intraventricularly caused a delayed, significant decrease of intraocular pressure (IOP) in adult female rabbits for a prolonged period, but only elevated plasma gonadotropins for a few hrs. Intravenous injections of LHRH caused a similar elevation of plasma gonadotropins without any effect on IOP.
J H, Liu, A C, Dacus
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Sexual dimorphic porcine pituitary response to growth hormone-releasing hormone

Domestic Animal Endocrinology, 1990
The aim of this study was to compare growth hormone (GH) response of barrows and gilts to porcine growth hormone-releasing hormone (pGRH) at the pituitary level. Anterior pituitary cells from barrows and gilts responded to pGRH in a dose-dependent manner.
M L, Heiman, P L, Surface, D H, Mowrey, R D, DiMarchi   +3 more
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Hormonal Release by Dispersed Pituitary Cells

Canadian Journal of Physiology and Pharmacology, 1972
Dispersed anterior pituitary cells were prepared by treatment of hog pituitaries with collagenase. The cell yield based on DNA recovered in intact cells after collagenase treatment was 5–10%. Ninety percent of the cells appeared intact by phase contrast microscopy. The three major cell types were identifiable by Mallory-Heidenhain staining.
C F, Kudo, D, Rubinstein, J M, McKenzie, J C, Beck   +3 more
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