Linked Life Data

7816205

Source:http://linkedlifedata.com/resource/pubmed/id/7816205

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1995-2-9
pubmed:abstractText
Neuropeptide Y-containing fibers project from the intergeniculate leaflet of the lateral geniculate nucleus to the suprachiasmatic nucleus. Previous studies have indicated that this pathway may be involved in non-photic resetting of the circadian clock. Therefore, we investigated the possibility that neuropeptide Y mediates phase shifts induced by a particular non-photic stimulus, a pulse of running in a novel wheel. Confining hamsters to a small nest box failed to block phase shifts induced by neuropeptide Y given at zeitgeber time 4; this indicates that increased locomotor activity is not necessary for the observed shifts. Antiserum raised against neuropeptide Y or normal serum was administered at circadian time 5 through a cannula aimed at the suprachiasmatic nucleus. The hamsters were then removed from their cages and placed in a novel wheel for 3 h. Hamsters that received normal serum and ran > 5000 revolutions in the novel wheel advanced their rhythms (mean shift 2.55 h +/- 0.22 S.E.M.) by amounts similar to those of unoperated hamsters. Administration of neuropeptide Y antiserum attenuated the shift normally associated with running in a novel wheel (mean shift 0.21 h +/- 0.14 S.E.M.). These studies indicate that the neuropeptide Y input from the lateral geniculate nucleus to the biological clock is involved in the phase shifts seen in response to novelty-induced wheel running. It also provides another example of the ability of antisera to alter behavior. This may be a useful approach in manipulations of neurochemical activity when antagonists are not yet available or poorly defined.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
0306-4522
pubmed:author
pubmed:issnType
Print
pubmed:volume
62
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
273-9
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1994
pubmed:articleTitle
Neuropeptide Y and behaviorally induced phase shifts.
pubmed:affiliation
Department of Zoology, University of Toronto, Ontario, Canada.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't