Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6-7
pubmed:dateCreated
2006-9-18
pubmed:abstractText
Twenty-two nonpregnant and 19 pregnant German Shepherd dogs were assigned to either a control group or a suspected short-cycling group, based on the interestrous interval (> or = 6 month and < 5 month, respectively) and data from previous pregnancies. Blood serum concentrations of progesterone and prolactin were determined from days 5 to 60 (day 0 = ovulation) for characterization of luteal function. In pregnant bitches, placental integrity was additionally assessed by relaxin concentrations. The nonpregnant, suspected short-cycling bitches had significantly lower progesterone concentrations than the controls, indicating decreased luteal activity both in the autonomous and prolactin-dependent period. In the pregnant suspected short-cycling bitches, unavoidable progesterone supplementation prevented assessment of luteal function; it may have suppressed prolactin secretion (significantly lower prolactin concentrations from days 20 to 60, compared with the pregnant control group), but deficient prolactin secretion affecting luteal function cannot be excluded. The significantly lower relaxin concentrations, together with a high incidence of embryonic death found in the pregnant, suspected short-cycling group, may indicate loss of placental integrity and may have caused decreased prolactin concentrations.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0093-691X
pubmed:author
pubmed:issnType
Print
pubmed:volume
66
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1431-5
pubmed:meshHeading
pubmed:year
2006
pubmed:articleTitle
Concentrations of progesterone, prolactin and relaxin in the luteal phase and pregnancy in normal and short-cycling German Shepherd dogs.
pubmed:affiliation
Institute for Reproductive Medicine, School of Veterinary Medicine Hannover, Buenteweg 15, D-30559 Hannover, Germany. Anne-Rose.Guenzel-Apel@tiho-hannover.de
pubmed:publicationType
Journal Article