Role of Gamma-Aminobutyric Acid in the Zona incerta in the Control of Luteinizing Hormone Release and Ovulation

1990 ◽  
Vol 52 (4) ◽  
pp. 354-360 ◽  
Author(s):  
Catherine A. Wilson ◽  
Margaret D. James ◽  
Amanda J. Leigh
Keyword(s):  
Luteinizing Hormone ◽  
Zona Incerta ◽  
Aminobutyric Acid ◽  
Hormone Release ◽  
Gamma Aminobutyric Acid ◽  
Luteinizing Hormone Release

Serotonin Inhibits Luteinizing Hormone Release via 5-HT1A Receptors in the Zona incerta of Ovariectomised, Anaesthetised Rats Primed with Steroids

2000 ◽  
Vol 72 (5) ◽  
pp. 272-283 ◽  
Author(s):  
Arif Siddiqui ◽  
Krishna Kotecha ◽  
Ana-Maria Salicioni ◽  
Veena Kalia ◽  
Joanne F. Murray ◽  
...  
Keyword(s):  
Luteinizing Hormone ◽  
Zona Incerta ◽  
Hormone Release ◽  
Luteinizing Hormone Release ◽  
Anaesthetised Rats

The Role of Neural Inputs from the Posterior Arcuate Nucleus in Pulsatile Luteinizing Hormone Release in Ovariectomized Rats.

2010 ◽  
Vol 83 (Suppl_1) ◽  
pp. 575-575
Author(s):  
Yoshihisa Uenoyama ◽  
Saya Watanabe ◽  
Kinuyo Iwata ◽  
Satoshi Ohkura ◽  
Kei-ichiro Maeda ◽  
...  
Keyword(s):  
Luteinizing Hormone ◽  
Arcuate Nucleus ◽  
Ovariectomized Rats ◽  
Hormone Release ◽  
Luteinizing Hormone Release

Role of α-Adrenergic Mechanism in Regulating Tonic Luteinizing Hormone Release in Conscious Ovariectomized Rats*

Endocrinology ◽  
1981 ◽  
Vol 108 (4) ◽  
pp. 1272-1275 ◽  
Author(s):  
F. KINOSHITA ◽  
Y. NAKAI ◽  
H. KATAKAMI ◽  
Y. KATO ◽  
H. IMURA
Keyword(s):  
Luteinizing Hormone ◽  
Ovariectomized Rats ◽  
Hormone Release ◽  
Luteinizing Hormone Release ◽  
Adrenergic Mechanism

The Effect of Histamine and H1and H2Receptors on Prolactin and Luteinizing Hormone Release in Humans: Sex Differences and the Role of Stress

1981 ◽  
Vol 52 (5) ◽  
pp. 924-928 ◽  
Author(s):  
ANTONIO E. PONTIROLI ◽  
EMILIO DE CASTRO E SILVA ◽  
FAUSTO MAZZOLENI ◽  
MIRIAM ALBERETTO ◽  
GIUSEPPINA BAIO ◽  
...  
Keyword(s):  
Sex Differences ◽  
Luteinizing Hormone ◽  
Hormone Release ◽  
Luteinizing Hormone Release

EFFECTS OF AN ANTI-OESTROGEN, TAMOXIFEN (ICI 46,474), ON LUTEINIZING HORMONE RELEASE AND OVULATION IN THE HEN

1981 ◽  
Vol 88 (2) ◽  
pp. 309-316 ◽  
Author(s):  
SUSAN C. WILSON ◽  
F. J. CUNNINGHAM
Keyword(s):  
Luteinizing Hormone ◽  
Pituitary Gland ◽  
Intramuscular Injection ◽  
Hormone Release ◽  
Luteinizing Hormone Release ◽  
Facilitative Role ◽  
Lh Release ◽  
Lh Rh ◽  
Lh Releasing Hormone

The role of oestradiol in the regulation of LH release in the hen was studied by use of the anti-oestrogen, tamoxifen (ICI 46,474). Intramuscular injection of laying hens with 2 or 4 mg tamoxifen on 2 successive days delayed or prevented the occurrence of the preovulatory release of LH and ovulation expected on day 3. Ovulation could be restored by i.v. injection of 20 pg LH releasing hormone (LH-RH). Tamoxifen at a dose of 1 mg affected neither the timing of the preovulatory release of LH nor ovulation. Treatment with 2 or 4 mg tamoxifen on 2 successive days reduced the effectiveness of an i.m. injection of progesterone to stimulate a release of LH. Injection of 1, 2 or 4 mg tamoxifen on 2 successive days significantly raised basal levels of LH in the blood at 24 h after the last injection. This was associated with an increase in the capacity of the pituitary gland to respond to an injection of synthetic LH-RH by a release of LH. These studies suggest that oestradiol has at least two roles in the regulation of LH release in the hen. First, it maintains a low basal level of LH in the blood by reducing the responsiveness of the pituitary gland to LH-RH. Secondly, oestradiol has a facilitative role in the mechanism by which progesterone stimulates the preovulatory release of LH.

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