Transcript profile of skeletal muscle lipid metabolism genes affected by diet in a piglet model of low birth weight.
Adipose Tissue
/ metabolism
Animals
Animals, Newborn
Birth Weight
Diet
Dietary Fats
/ metabolism
Female
Infant, Low Birth Weight
/ physiology
Lipid Metabolism
/ genetics
Lipids
/ genetics
Lipogenesis
Lipolysis
Male
Models, Animal
Muscle, Skeletal
/ metabolism
Oxidation-Reduction
RNA, Messenger
/ genetics
Sus scrofa
/ genetics
Transcriptome
/ genetics
Journal
PloS one
ISSN: 1932-6203
Titre abrégé: PLoS One
Pays: United States
ID NLM: 101285081
Informations de publication
Date de publication:
2019
2019
Historique:
received:
11
06
2019
accepted:
15
10
2019
entrez:
30
10
2019
pubmed:
30
10
2019
medline:
18
3
2020
Statut:
epublish
Résumé
Dysregulated skeletal muscle metabolism (DSMM) is associated with increased inter- and intramuscular fat deposition in low birth weight (L) individuals. The mechanisms behind DSMM in L individuals are not completely understood but decreased muscle mass and shifts in lipid and carbohydrate utilisation may contribute. Previously, we observed lower fat oxidation in a porcine model of low birth weight. To elucidate the biological activities underpinning this difference microfluidic arrays were used to assess mRNA associated with lipid metabolism in longissimus dorsi (LD) and semitendinosus (ST) skeletal muscle samples from thirty-six female L and normal birth weight (N) pigs. Plasma samples were collected from a sub-population to measure metabolite concentrations. Following overnight fasting, skeletal muscle and plasma samples were collected and the association with birth weight, diet and age was assessed. Reduced dietary fat was associated with decreased LD intermuscular fat deposition and beta-oxidation associated mRNA, in both birth weight groups. Lipid uptake and intramuscular fat deposition associated mRNA was reduced in only L pigs. Abundance of ST mRNA associated with lipolysis, lipid synthesis and transport increased in both birth weight groups. Lipid uptake associated mRNA reduced in only L pigs. These changes were associated with decreased plasma L glucose and N triacylglycerol. Post-dietary fat reduction, LD mRNA associated with lipid synthesis and inter- and intramuscular fat deposition increased in L, whilst beta-oxidation associated mRNA remains elevated for longer in N. In the ST, mRNA associated with lipolysis and intramuscular fat deposition increased in both birth weight groups, however this increase was more significant in L pigs and associated with reduced beta-oxidation. Analysis of muscle lipid metabolism associated mRNA revealed that profile shifts are a consequence of birth weight. Whilst, many of the adaptions to diet and age appear to be similar in birth weight groups, the magnitude of response and individual changes underpin the previously observed lower fat oxidation in L pigs.
Identifiants
pubmed: 31661531
doi: 10.1371/journal.pone.0224484
pii: PONE-D-19-16481
pmc: PMC6818798
doi:
Substances chimiques
Dietary Fats
0
Lipids
0
RNA, Messenger
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
e0224484Déclaration de conflit d'intérêts
The authors have declared that no competing interests exist.
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