Linked Life Data

12963098

Source:http://linkedlifedata.com/resource/pubmed/id/12963098

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2003-9-9
pubmed:abstractText
In this study, growth hormone (GH), insulin-like growth factor 1 (IGF-1), leptin, luteinising hormone (LH) and prolactin were analyzed in mares from late pregnancy throughout lactation (group 1, n=46) and in non-lactating mares (group 2, n=11). Plasma GH concentrations in group 1 mares during gestation and lactation were lower than in mares of group 2 (P<0.05). Highest IGF-1 levels were found in lactating mares in the week of foaling. IGF-1 concentrations decreased continuously thereafter. Plasma leptin concentrations decreased after foaling and, for 4 weeks, were lower in lactating than in non-lactating mares (P<0.05). Reduced leptin concentrations may promote feed intake and allow lactating mares to avoid an energy deficit. In group 1 mares, prolactin concentrations reached a maximum in the week of foaling and decreased rapidly thereafter. Plasma LH concentrations in group 1 mares before foaling were lower than at corresponding times in group 2 (P<0.05). LH concentrations then increased and did no longer differ from group 2 until week 2 postpartum. This increase may contribute to the resumption of cyclic ovarian activity in postpartum mares. Subsequently, LH levels in lactating mares decreased again (P<0.05). Increased IGF-1 concentrations early postpartum might contribute to ovarian stimulation while reduced IGF-1 and GH concentrations later in lactation might cause reduced stimulation. The changes in somatotrophic hormones could thus explain, at least in part, a more pronounced stimulation of ovarian function early postpartum than during the following months of lactation.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0739-7240
pubmed:author
pubmed:issnType
Print
pubmed:volume
25
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
47-59
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
Effects of lactation on metabolic and reproductive hormones in Lipizzaner mares.
pubmed:affiliation
Clinic for Obstetrics, Gynecology and Andrology, University of Veterinary Sciences, Vienna, Austria.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't