Switch to
Predicate | Object |
---|---|
rdf:type | |
lifeskim:mentions | |
pubmed:issue |
6
|
pubmed:dateCreated |
1976-4-1
|
pubmed:abstractText |
Two experiments were conducted to determine whether the increased serum LH which occurs within 12 hr after a luteolytic dose of PGF2alpha is dependent upon changes in progesterone or estradiol secretion. In the first experiment, exogenous progesterone abolished the increase in serum LH caused by a subcutaneous injection of 25 mg PGF2alpha in diestrous heifers, but not in ovariectomized heifers. In the second experiment, progesterone pessaries were removed at 6 hr after a subcutaneous injection of 25 mg PGF2alpha. LH remained at pre-PGF2alpha values while the pessaries were in place, but began to increase within 1 hr after they were removed. Blood estradiol also remained at pre-PGF2alpha values until the pessaries were removed, and began to increase at 2 hr after pessary removal. We conclude that the increase in serum LH within 12 hr after PGF2alpha treatment in diestrous cattle is dependent upon withdrawal of progesterone; it is not due to increased serum estradiol.
|
pubmed:language |
eng
|
pubmed:journal | |
pubmed:citationSubset |
IM
|
pubmed:chemical | |
pubmed:status |
MEDLINE
|
pubmed:month |
Dec
|
pubmed:issn |
0090-6980
|
pubmed:author | |
pubmed:issnType |
Print
|
pubmed:volume |
10
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
1001-9
|
pubmed:dateRevised |
2006-11-15
|
pubmed:meshHeading |
pubmed-meshheading:1239792-Animals,
pubmed-meshheading:1239792-Cattle,
pubmed-meshheading:1239792-Corpus Luteum,
pubmed-meshheading:1239792-Diestrus,
pubmed-meshheading:1239792-Estradiol,
pubmed-meshheading:1239792-Estrus,
pubmed-meshheading:1239792-Female,
pubmed-meshheading:1239792-Luteinizing Hormone,
pubmed-meshheading:1239792-Ovary,
pubmed-meshheading:1239792-Pregnancy,
pubmed-meshheading:1239792-Progesterone,
pubmed-meshheading:1239792-Prostaglandins F
|
pubmed:year |
1975
|
pubmed:articleTitle |
Blood LH after PGF2alpha in diestrous and ovariectomized cattle.
|
pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.
|