Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2001-10-9
pubmed:abstractText
The nutritional and physiological modifications that occur during the weaning period induce adaptations of tissue metabolism in all mammal species. Among the adaptations due to weaning in ruminants, the regulation of lipoprotein lipase (LPL) activity, one of the rate-limiting steps of fatty acid utilization by tissues, was still unknown. The present study aimed at comparing LPL activity and gene expression in the heart, seven skeletal muscles and three adipose tissue sites between two groups of seven preruminant (PR) or ruminant (R) calves having a similar age (170 d), similar empty body weight (194 kg) at slaughter, and similar net energy intake from birth onwards. Triacylglycerol content of adipose tissues was 16 % lower in R than in PR calves, This could be partly the result from a lower LPL activity (-57 %, ). LPL mRNA levels were also lower in R calves (-48 % to -68 %, ) suggesting a pretranslational regulation of LPL activity. Activity and mRNA levels of LPL did not differ significantly in the heart and skeletal muscles except in the masseter in which LPL activity and mRNA levels were higher (+50 % and +120 % respectively, ) in the R calves. Regulation of LPL in masseter could be explained by the high contractile activity of this muscle after weaning due to solid food chewing. In conclusion, weaning in the calf affects LPL activity and expression in adipose tissues, but not in skeletal muscles except the masseter.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0007-1145
pubmed:author
pubmed:issnType
Print
pubmed:volume
86
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
433-41
pubmed:dateRevised
2011-11-17
pubmed:meshHeading
pubmed-meshheading:11591230-Adipose Tissue, pubmed-meshheading:11591230-Animal Nutritional Physiological Phenomena, pubmed-meshheading:11591230-Animals, pubmed-meshheading:11591230-Cattle, pubmed-meshheading:11591230-DNA, pubmed-meshheading:11591230-Fatty Acids, Nonesterified, pubmed-meshheading:11591230-Gene Expression, pubmed-meshheading:11591230-In Situ Hybridization, pubmed-meshheading:11591230-Insulin, pubmed-meshheading:11591230-Lipoprotein Lipase, pubmed-meshheading:11591230-Male, pubmed-meshheading:11591230-Masseter Muscle, pubmed-meshheading:11591230-Muscle, Skeletal, pubmed-meshheading:11591230-Muscle Proteins, pubmed-meshheading:11591230-Myocardium, pubmed-meshheading:11591230-RNA, pubmed-meshheading:11591230-RNA, Messenger, pubmed-meshheading:11591230-Triglycerides, pubmed-meshheading:11591230-Triiodothyronine, pubmed-meshheading:11591230-Weaning
pubmed:year
2001
pubmed:articleTitle
Weaning affects lipoprotein lipase activity and gene expression in adipose tissues and in masseter but not in other muscles of the calf.
pubmed:affiliation
Unité de Recherches sur les Herbivores, Institut National de la Recherche Agronomique, Centre de Recherches de Clermont Ferrand-Theix, 63122 Saint-Genès-Champanelle, France. hocquet@clermont.inra.fr
pubmed:publicationType
Journal Article