Linked Life Data

1284923

Source:http://linkedlifedata.com/resource/pubmed/id/1284923

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1993-9-23
pubmed:abstractText
Levels of vasotocin-like immunoreactivity (iVT) and the indoles serotonin (5HT), 5-hydroxyindole acetic acid, N-acetyl-serotonin (NAS) and melatonin were measured over 24-hour periods at monthly intervals in the pineal gland of male rats kept under constant laboratory conditions of photoperiod and temperature. The 8- to 10-fold increase in pineal iVT, which occurred during mid-August, was not related to variations over the 24-hour light:dark (L:D) cycle. Tryptophan and 5HT exhibited seasonal variations over the 24 h L:D cycle with a single peak during the winter months. Twenty-four-hour levels of NAS tended to increase during the fall and spring. Seasonal effects on indole metabolism were further suggested by a marked decline during the fall in the correlation between NAS versus melatonin in individual pineal glands. Positive correlations between 5HT versus NAS and 5HT versus melatonin tended to be significant only during the summer months. These data suggest that environmental cues other than photo-period and temperature can regulate pineal neuroendocrine functions.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
1016-0922
pubmed:author
pubmed:issnType
Print
pubmed:volume
1
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
150-9
pubmed:dateRevised
2003-11-14
pubmed:meshHeading
pubmed:articleTitle
Circannual analysis of pineal gland indoles and vasotocin-like immunoreactivity in male rats kept on constant photoschedules and temperature.
pubmed:affiliation
Department of Cell Biology, Loyola University Stritch School of Medicine, Maywood, Ill. 60153.
pubmed:publicationType
Journal Article