Linked Life Data

21501615

Source:http://linkedlifedata.com/resource/pubmed/id/21501615

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2011-6-6
pubmed:abstractText
Plasma levels of 17,20?-dihydroxy-4-pregnen-3-one (17,20?P), and the timing of ovulation were investigated in female Arctic charr (Salvelinus alpinus) reared at 5°C and at 10°C during the pre-spawning period. The effects of switching from 5 to 10°C, and from 10 to 5°C were also investigated. 17,20?P plasma levels were higher at 5°C than at 10°C. A switch from 10 to 5°C stimulated 17,20?P secretion, whereas a switch from 5 to 10°C had the opposite effect. Ovulation occurred spontaneously in the females kept at 5°C, and in those switched from 10 to 5°C. In contrast, ovulation was inhibited in females reared at 10°C, and in those switched from 5 to 10°C. Oocyte maturation at 5°C and at 10°C in the presence of LH or of 17,20?P was also investigated in vitro using donor females reared at 5 or 10°C. Both LH and 17,20?P stimulated oocyte maturation more effectively in oocytes incubated at 5°C than at 10°C. At both incubation temperatures, the rearing temperature of the donor females had a significant impact on their responsiveness to LH stimulation, but had no effect on their responsiveness to 17,20?P stimulation. In addition to the inhibition of LH secretion, which had already been reported, the results reported here show that in Arctic charr raising the temperature above the physiological range reduces both follicular responsiveness to LH stimulation and the sensitivity of oocytes to 17,20?P stimulation.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
1095-6840
pubmed:author
pubmed:copyrightInfo
Copyright © 2011 Elsevier Inc. All rights reserved.
pubmed:issnType
Electronic
pubmed:day
1
pubmed:volume
172
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
392-9
pubmed:meshHeading
pubmed:year
2011
pubmed:articleTitle
Disruption of the secretion and action of 17,20?-dihydroxy-4-pregnen-3-one in response to a rise in temperature in the Arctic charr, Salvelinus alpinus. Consequences on oocyte maturation and ovulation.
pubmed:affiliation
Institut National de la Recherche Agronomique, INRA, UMR Carrtel, Thonon les bains, France. gillet@thonon.inra.fr
pubmed:publicationType
Journal Article