Linked Life Data

7628689

Source:http://linkedlifedata.com/resource/pubmed/id/7628689

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1995-9-7
pubmed:abstractText
We investigated the relationship between catecholamine neurohormones and glucose during seasonal reproductive activity in Japanese toads (Bufo japonicus). Field studies found that plasma epinephrine concentration increased as toads migrated to their breeding ponds, where amplexus most frequently took place. Blood glucose concentration also increased as toads arrived at the ponds, even though these animals did not eat during the breeding season, and there was a positive correlation between epinephrine and glucose levels. Blood glucose concentration was higher in amplectic than in solitary males, whereas this relationship did not occur in females. For both males and females, plasma epinephrine concentration was elevated during amplexus. The plasma concentration of norepinephrine was lower than that of epinephrine and did not correlate with either the proximity of the animal to the breeding ponds or the blood glucose concentration. Laboratory experiments showed that systemic injection of [Trp7,Leu8]gonadotropin-releasing hormone (sGnRH) increased plasma epinephrine to levels characteristic of amplectic feral toads. These results suggest that a physiological role of GnRH-like peptides may be to stimulate epinephrine secretion and consequently to increase glucose production in toads under the starvation conditions associated with the breeding migration.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0016-6480
pubmed:author
pubmed:issnType
Print
pubmed:volume
98
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
303-10
pubmed:dateRevised
2008-8-28
pubmed:meshHeading
pubmed:year
1995
pubmed:articleTitle
Circulating catecholamine and glucose concentrations in Japanese toads (Bufo japonicus) during the breeding season.
pubmed:affiliation
Department of Physiology, University of Western Ontario, London, Canada.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't