...Akira Kato; Hiromi Hiruma; Fukuko Kimura Whether estrogen has the brain as a site of its negative feedback action was investigated by checking the acute effect of estradiol-17β (E 2 ) on the electrical activity of the luteinizing hormone-releasing hormone (LHRH) pulse generator in ovariectomized...

...Joseph Weidenfeld; Shaul Feldman In the present study we characterized the negative feedback effect of exogenous and endogenous glucocorticoids (GC) on the responses of the hypothalamo-pituitary-adrenal (HPA) axis to neural stimuli in male rats. Dexamethasone (Dex) was injected intraperitoneally...

... significantly reduced after BROM treatment. In parallel studies, PRL secretion was measured after administration of ether stress. In controls, serum PRL markedly increased after ether and this effect was blunted by prior dexamethasone (DEX) administration, due to the steroid negative feedback on PRL secretion...

...Patricia A. Spillar; Bela E. Piacsek Reduced food intake results in altered reproductive function in female mammals and previous studies have shown this to be due, at least in part, to an increase in the negative feedback efficacy of estrogen on pituitary luteinizing hormone (LH) secretion...

...Varadaraj Chandrashekar; Richard W. Steger; Andrzej Bartke; Clare T. Fadden; S. Gail Kienast The influence of diabetes on the gonadotropin response to the negative feedback effect of testosterone (T) and hypothalamic neurotransmitter turnover rates in adult male rats was evaluated. Adult male...

... that morphine may exert its inhibitory effect on TSH secretion by increasing the negative feedback sensitivity to thyroid hormones. 31 01 1990 21 03 1990 3 4 2008 © 1990 S. Karger AG, Basel 1990 Copyright / Drug Dosage / Disclaimer Copyright: All rights reserved. No part...

...Benedict J. Canny; Iain J. Clarke; John W. Funder Glucocorticoids act upon the hypothalamus and pituitary to regulate both corticotropin-releasing factors and adrenocorticotropin (ACTH) in a classical negative feedback loop. There are two distinct receptor systems in the central nervous system...

..., instructions or products referred to in the content or advertisements. Corticotropin-releasing factor Diurnal rhythmicity Neuroendocrine Negative feedback 28 03 1990 13 06 1990 3 4 2008 Neuroendocrinology 1990;52:626-631 Corticotropin-Releasing Factor Concentrations Exhibit...

.... The increase in receptors appears to render the H animals more sensitive to the negative feedback effects of the high levels of circulating glucocorticoids, exerting a greater inhibitory control over subsequent adrenocortical activity. Stress Hippocampus Glucocorticoid receptors Early environment...

... of the responses of the pulsatile LH secretory system to the negative feedback effects of ovarian steroids remain the same, while others are altered when these same levels of steroids are replaced for 24 h 1 week after OVX rather than immediately after OVX. D2-proestrous levels of E 2 retain their suppressive...

... of ACTH secretion. Moreover, they substantiate an implication of the amygdaloid complex in the control of the delayed negative feedback of glucocorticoids on ACTH secretion via interaction with the serotoninergic system. Amygdala Adrenocorticotropic hormone Serotonin Serotoninergic Glucocorticoid...

... Negative feedback Hypothalamus Ovariectomy Immunocytochemistry Electron microscopy © 1987 S. Karger AG, Basel 1987 Copyright / Drug Dosage / Disclaimer Copyright: All rights reserved. No part of this publication may be translated into other languages, reproduced or utilized in any form...

... fluid Negative feedback Serum binding Rhesus monkey © 1984 S. Karger AG, Basel 1984 Copyright / Drug Dosage / Disclaimer Copyright: All rights reserved. No part of this publication may be translated into other languages, reproduced or utilized in any form or by any means, electronic...

... to in the content or advertisements. Vasopressin Cardiac output Heart rate Negative feedback 19 12 1983 16 03 1984 28 3 2008 Neuroendocrinology 39: 350-355 (1984) Effect of Vertebral, Carotid and Intravenous Infusions of Lysine Vasopressin on Plasma Vasopressin and Cardiovascular...

.... Ovarian steroids Pulsatile LH Negative feedback Gonadotropin secretion Neuroendocrinology 38: 351-356 ( 1984) © 1984 S. Karger AG. Basel 0028-3835/84/0385-0351S 2.75/0 Inhibitory Effects of Estrogen and Progesterone on Several Parameters of Pulsatile LH Release in the Ovariectomized Rat1 Richard F...

... effect on prepubertal gonadotropin release, and thus they do not represent an important restraining influence on the occurrence of puberty. 12 09 1983 17 11 1983 28 3 2008 3α-Diol Negative feedback First ovulation Puberty Neuroendocrinology 39: 19-24(1984) Effect...

.... On the contrary, IM was completely ineffective in these rats. These studies suggest that the mode of action of IM in causing hypersecretion of ACTH and CS is by interfering with the negative feedback effects of the glucocorticoids. 18 01 1982 26 07 1982 26 3 2008 © 1983 S. Karger AG, Basel...

...., USA Key Words. Hamster Refractoriness Negative feedback Castration Gonadotropins Reproductive cycle, annual Mesocricetus auratus Abstract. This investigation was designed to determine if a correlation exists between a change in the response of the hypothalamo-hypophysial axis to castration...

...C. Libertun; S.E. Kaplan; A.F. De Nicola Studies were carried out to investigate the negative feedback effect of progesterone on the secretion of prolactin (Prl). Ovariectomized adult rats were treated with either 50 μ g of estradiol, 25 mg of progesterone, a combination of both or the oil diluent...

.... Glucocorticoid receptors ACTH secretion Negative feedback Neuroendocrinology IS: 299-310 (1975) Glucocorticoid Binding to Adenohypophysis Receptors and its Physiological Role B. K o c h , B. L u t z , B. Briaud and C. M ialhe Institut de Physiologie, Université Louis Pasteur, Strasbourg Key Words...