Progesterone Treatment That either Blocks or Augments the Estradiol-Induced Gonadotropin-Releasing Hormone Surge Is Associated with Different Patterns of Hypothalamic Neural Activation

2001 ◽  
Vol 73 (6) ◽  
pp. 378-386 ◽  
Author(s):  
Trevor A. Richter ◽  
Jane E. Robinson ◽  
Neil P. Evans
Keyword(s):  
Gonadotropin Releasing Hormone ◽  
Neural Activation ◽  
Releasing Hormone ◽  
Progesterone Treatment

scholarly journals Gonadotropin-Releasing Hormone Modulates Vomeronasal Neuron Response to Male Salamander Pheromone

2012 ◽  
Vol 6 ◽  
pp. JEN.S8414 ◽  
Author(s):  
Celeste R. Wirsig-Wiechmann ◽  
Justin Colvard ◽  
Christopher E. Aston ◽  
Radhika Dighe ◽  
Lynne D. Houck ◽  
...  
Keyword(s):  
Relative Number ◽  
Relative Activity ◽  
Gonadotropin Releasing Hormone ◽  
Neural Activation ◽  
Activity Levels ◽  
Male Pheromone ◽  
Releasing Hormone ◽  
Relative Measure ◽  
Neuron Response ◽  
Electrophysiological Studies

Electrophysiological studies have shown that gonadotropin-releasing hormone (GnRH) modifies chemosensory neurons responses to odors. We have previously demonstrated that male Plethodon shermani pheromone stimulates vomeronasal neurons in the female conspecific. In the present study we used agmatine uptake as a relative measure of the effects of GnRH on this pheromone-induced neural activation of vomeronasal neurons. Whole male pheromone extract containing 3 millimolar agmatine with or without 10 micromolar GnRH was applied to the nasolabial groove of female salamanders for 45 minutes. Immunocytochemical procedures were conducted to visualize and quantify relative agmatine uptake as measured by labeling density of activated vomeronasal neurons. The relative number of labeled neurons did not differ between the two groups: pheromone alone or pheromone-GnRH. However, vomeronasal neurons exposed to pheromone-GnRH collectively demonstrated higher labeling intensity, as a percentage above background (75%) as compared with neurons exposed to pheromone alone (63%, P < 0.018). Since the labeling intensity of agmatine within neurons signifies the relative activity levels of the neurons, these results suggest that GnRH increases the response of female vomeronasal neurons to male pheromone.

186: Neoadjuvant Gonadotropin-Releasing Hormone Therapy Before Orchiopexy Improves the Fertility Index in Concomitant Testicular Biopsies

2004 ◽  
Vol 171 (4S) ◽  
pp. 49-49
Author(s):  
Christian Schwentner ◽  
Andreas Lunacek ◽  
Josef Oswald ◽  
Georg Bartsch ◽  
Alfons Kreczy ◽  
...  
Keyword(s):  
Hormone Therapy ◽  
Gonadotropin Releasing Hormone ◽  
Releasing Hormone ◽  
Fertility Index

Gonadotropin releasing hormone enhances polyphosphoinositid breakdown in rat pituitary gonadotrophs

1986 ◽  
Vol 113 (1_Suppl) ◽  
pp. S70
Author(s):  
L. KIESEL ◽  
K. BERTGES ◽  
T. RABE ◽  
K. KLINGA ◽  
B. RUNNEBAUM
Keyword(s):  
Gonadotropin Releasing Hormone ◽  
Releasing Hormone ◽  
Rat Pituitary

N-methyl-D,L-aspartate (NMDA) stimulates gonadotropin secretion in the ovine fetus through gonadotropin-releasing hormone (GnRH) release

1988 ◽  
Vol 117 (4_Suppl) ◽  
pp. S93-S94
Author(s):  
M. BETTENDORF ◽  
F. DE ZEGHER ◽  
N. ALBERS ◽  
S. L. KAPLAN ◽  
M. M. GRUMBACH
Keyword(s):  
Gonadotropin Releasing Hormone ◽  
Gonadotropin Secretion ◽  
Releasing Hormone ◽  
Gnrh Release ◽  
Ovine Fetus

0468 The repeatability of gonadotropin releasing hormone-induced release of luteinizing hormone and its association with fertility in dairy cattle

2016 ◽  
Vol 94 (suppl_5) ◽  
pp. 223-224
Author(s):  
M. Gobikrushanth ◽  
P. A. Dutra ◽  
C. A. Felton ◽  
T. C. Bruinjé ◽  
M. G. Colazo ◽  
...  
Keyword(s):  
Luteinizing Hormone ◽  
Dairy Cattle ◽  
Gonadotropin Releasing Hormone ◽  
Releasing Hormone
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