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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2
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pubmed:dateCreated |
1997-8-29
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pubmed:abstractText |
From a comparative viewpoint, we have investigated the presence and neuroanatomical distribution of gonadotropin-releasing hormone (GnRH)-immunoreactive material in the brain of a gymnophione amphibian, Ichthyophis beddomei. Immunocytochemical analysis of the adult brain and terminal nerves in both sexes shows the presence of neurons and fibers containing mammalian GnRH (mGnRH)- and chicken GnRH-II (cGnRH-II)-like peptides. With respect to GnRH-immunoreactive material, there are two distinct neuronal systems in the brain: one containing mGnRH, which is located in the forebrain and terminal nerve, and the other containing cGnRH-II, which is restricted to the midbrain tegmentum. Basically, this distribution pattern parallels that of many species of anurans and a urodele. Whereas the presence of cGnRH-II-immunoreactive fibers in the dorsal pallium of L. beddomei is a feature in common with a urodele amphibian, the total absence of cGnRH-II-like material in the median eminence is unique to this species. It is suggested here that the distribution profile of GnRH-like material within the brain and terminal nerve of I. beddomei represents a primitive pattern.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Jul
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pubmed:issn |
0021-9967
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
28
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pubmed:volume |
384
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
283-92
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pubmed:dateRevised |
2008-11-21
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pubmed:meshHeading |
pubmed-meshheading:9215723-Amphibians,
pubmed-meshheading:9215723-Animals,
pubmed-meshheading:9215723-Brain,
pubmed-meshheading:9215723-Brain Chemistry,
pubmed-meshheading:9215723-Female,
pubmed-meshheading:9215723-Gonadotropin-Releasing Hormone,
pubmed-meshheading:9215723-Immunohistochemistry,
pubmed-meshheading:9215723-Male,
pubmed-meshheading:9215723-Nerve Fibers,
pubmed-meshheading:9215723-Neurons
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pubmed:year |
1997
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pubmed:articleTitle |
Distribution of gonadotropin-releasing hormone immunoreactivity in the brain of Ichthyophis beddomei (Amphibia: Gymnophiona).
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pubmed:affiliation |
Dipartimento di Zoologia, Università di Napoli Federico II, Italy.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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