Switch to
| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
6 Pt 2
|
| pubmed:dateCreated |
1992-8-4
|
| pubmed:abstractText |
Ovariectomized golden-mantled ground squirrels (Spermophilus lateralis) were implanted with estradiol benzoate (EB)-filled or empty capsules. Body weight was monitored for at least 1 yr before, during, and after hormone treatment. EB treatment of 6-7 mo duration, restricted to the weight-gain phase, decelerated weight gain and delayed attainment of peak weight by 34 days; the period of the circannual rhythm, measured between successive trough weights, was 36 days longer in squirrels treated with estradiol than in untreated animals. EB treatment of 2- to 4-mo duration, restricted to the weight-loss phase, accelerated weight loss, advanced attainment of trough weights by 57 days, and decreased the period of the circannual rhythm by 66 days. Estradiol-induced phase delays and advances were preserved in the year after discontinuation of hormone treatment. These results favor the existence of circannual phase-response curves to hormones and provide a system for pharmacological manipulation of circannual rhythms.
|
| pubmed:grant | |
| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:citationSubset |
IM
|
| pubmed:chemical | |
| pubmed:status |
MEDLINE
|
| pubmed:month |
Jun
|
| pubmed:issn |
0002-9513
|
| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:volume |
262
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
R1096-9
|
| pubmed:dateRevised |
2007-11-14
|
| pubmed:meshHeading | |
| pubmed:year |
1992
|
| pubmed:articleTitle |
Estradiol phase-shifts circannual rhythms of golden-mantled ground squirrels.
|
| pubmed:affiliation |
Department of Psychology, University of California, Berkeley 94720.
|
| pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.
|