Linked Life Data

12606458

Source:http://linkedlifedata.com/resource/pubmed/id/12606458

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2003-3-21
pubmed:abstractText
The retrograde tracer, FluoroGold, was used to trace the neuronal inputs from the septum, hypothalamus, and brain stem to the region of the GnRH neurons in the rostral preoptic area of the ram and to compare these imputs with those in the ewe. Sex differences were found in the number of retrogradely labeled cells in the dorsomedial and ventromedial nuclei. Retrogradely labeled cells were also observed in the lateral septum, preoptic area, organum vasculosum of the lamina terminalis, bed nucleus of the stria terminalis, stria terminalis, subfornical organ, periventricular nucleus, anterior hypothalamic area, lateral hypothalamus, arcuate nucleus, and posterior hypothalamus. These sex differences may partially explain sex differences in how GnRH secretion is regulated. Fluorescence immunohistochemistry was used to determine the neurochemical identity of some of these cells in the ram. Very few tyrosine hydroxylase-containing neurons in the A14 group (<1%), ACTH-containing neurons (<1%), and neuropeptide Y-containing neurons (1-5%) in the arcuate nucleus contained FluoroGold. The ventrolateral medulla and parabrachial nucleus contained the main populations of FluoroGold-containing neurons in the brain stem. Retrogradely labeled neurons were also observed in the nucleus of the solitary tract, dorsal raphe nucleus, and periaqueductal gray matter. Virtually all FluoroGold-containing cells in the ventrolateral medulla and about half of these cells in the nucleus of the solitary tract also stained for dopamine beta-hydroxylase. No other retrogradely labeled cells in the brain stem were noradrenergic. Although dopamine, beta-endorphin, and neuropeptide Y have been implicated in the regulation of GnRH secretion in males, it is unlikely that these neurotransmitters regulate GnRH secretion via direct inputs to GnRH neurons.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0006-3363
pubmed:author
pubmed:issnType
Print
pubmed:volume
68
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1119-33
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed-meshheading:12606458-Adrenocorticotropic Hormone, pubmed-meshheading:12606458-Animals, pubmed-meshheading:12606458-Brain Mapping, pubmed-meshheading:12606458-Brain Stem, pubmed-meshheading:12606458-Female, pubmed-meshheading:12606458-Fluorescent Dyes, pubmed-meshheading:12606458-Hypothalamus, pubmed-meshheading:12606458-Immunohistochemistry, pubmed-meshheading:12606458-Male, pubmed-meshheading:12606458-Neural Pathways, pubmed-meshheading:12606458-Neurons, pubmed-meshheading:12606458-Neuropeptide Y, pubmed-meshheading:12606458-Preoptic Area, pubmed-meshheading:12606458-Septum of Brain, pubmed-meshheading:12606458-Sex Characteristics, pubmed-meshheading:12606458-Sheep, pubmed-meshheading:12606458-Stilbamidines, pubmed-meshheading:12606458-Tissue Distribution, pubmed-meshheading:12606458-Tyrosine 3-Monooxygenase
pubmed:year
2003
pubmed:articleTitle
Neuronal inputs from the hypothalamus and brain stem to the medial preoptic area of the ram: neurochemical correlates and comparison to the ewe.
pubmed:affiliation
Department of Physiology, Monash University, Victoria 3800, Australia. chscott@csu.edu.au
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't