Direct neural connection from the medial preoptic area to the hypothalamic arcuate nucleus of the rat

1976 ◽  
Vol 25 (5) ◽  
Author(s):  
K. K�ves ◽  
M. R�thelyi
Keyword(s):  
Arcuate Nucleus ◽  
Preoptic Area ◽  
Medial Preoptic Area ◽  
Neural Connection ◽  
Hypothalamic Arcuate Nucleus

A high level of male sexual activity is necessary for the activation of the medial preoptic area and the arcuate nucleus during the ‘male effect’ in anestrous goats

2016 ◽  
Vol 165 ◽  
pp. 173-178 ◽  
Author(s):  
Marie Bedos ◽  
Wendy Portillo ◽  
Jean-Philippe Dubois ◽  
Gerardo Duarte ◽  
José A. Flores ◽  
...  
Keyword(s):  
Sexual Activity ◽  
Arcuate Nucleus ◽  
Preoptic Area ◽  
Medial Preoptic Area ◽  
Male Effect ◽  
High Level

scholarly journals A conceptual model of the influence of stress on female reproduction

Reproduction ◽  
2003 ◽  
pp. 151-163 ◽  
Author(s):  
H Dobson ◽  
S Ghuman ◽  
S Prabhakar ◽  
R Smith
Keyword(s):  
Neuropeptide Y ◽  
Brain Stem ◽  
Paraventricular Nucleus ◽  
Arcuate Nucleus ◽  
Preoptic Area ◽  
Pulse Frequency ◽  
Medial Preoptic Area ◽  
Aminobenzoic Acid ◽  
Female Reproduction ◽  
Cell Recruitment

Intriguingly, similar neurotransmitters and nuclei within the hypothalamus control stress and reproduction. GnRH neurone recruitment and activity is regulated by a balance between stimulation, suppression and permissiveness controlled by noradrenaline, neuropeptide Y and serotonin from the brain stem, impact from glutamate in the medial preoptic area and neuropeptide Y in the arcuate nucleus, in opposition to the restraining influences of gamma-aminobenzoic acid within the medial preoptic area and opioids from the arcuate nucleus. Stress also activates neuropeptide Y perikarya in the arcuate nucleus and brain stem noradrenaline neurones. The latter project either indirectly, via the medial preoptic area, or directly to the paraventricular nucleus to release corticotrophin releasing hormone (CRH) and arginine vasopressin (AVP). Within the medial preoptic area, GnRH neurones synapse with CRH and AVP axons. Stimulation of CRH neurones in the paraventricular nucleus also activates gamma-aminobenzoic acid and opioid neurones in the medial preoptic area and reduces GnRH cell recruitment, thereby decreasing GnRH pulse frequency. Oestradiol enhances stress-induced noradrenaline suppression of LH pulse frequency but when applied in the paraventricular nucleus or brain stem, and not in the medial preoptic area or arcuate nucleus. The importance of CRH and AVP in the medial preoptic area needs confirming in a species other than the rat, which uses adrenal activation to time the onset of the GnRH surge. Another stress-activated pathway involves the amygdala and bed of the nucleus stria terminalis, which contain CRH neurones and accumulate gamma-aminobenzoic acid during stress.

Neonatal handling reduces angiotensin II receptor density in the medial preoptic area and paraventricular nucleus but not in arcuate nucleus and locus coeruleus of female rats

2006 ◽  
Vol 1067 (1) ◽  
pp. 177-180 ◽  
Author(s):  
Cármen Marilei Gomes ◽  
Márcio Vinícius Fagundes Donadio ◽  
Inélia Franskoviaki ◽  
Janete A. Anselmo-Franci ◽  
Celso Rodrigues Franci ◽  
...  
Keyword(s):  
Angiotensin Ii ◽  
Locus Coeruleus ◽  
Paraventricular Nucleus ◽  
Arcuate Nucleus ◽  
Preoptic Area ◽  
Medial Preoptic Area ◽  
Female Rats ◽  
Receptor Density ◽  
Angiotensin Ii Receptor ◽  
Neonatal Handling

Male sexual behavior and catecholamine levels in the medial preoptic area and arcuate nucleus in middle-aged rats

2007 ◽  
Vol 1184 ◽  
pp. 186-192 ◽  
Author(s):  
Joyce C. Chen ◽  
Houng-Wei Tsai ◽  
Kuei-Ying Yeh ◽  
Mei-Yun Tai ◽  
Yuan-Feen Tsai
Keyword(s):  
Sexual Behavior ◽  
Arcuate Nucleus ◽  
Preoptic Area ◽  
Medial Preoptic Area ◽  
Aged Rats ◽  
Middle Aged ◽  
Male Sexual Behavior ◽  
Catecholamine Levels
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