| Autor: |
Costa TC; Department of Animal Science, Universidade Federal de Viçosa, Viçosa 36570-000, Brazil.; Muscle Biology and Nutrigenomics Laboratory, Universidade Federal de Viçosa, Viçosa 36570-000, Brazil., Dutra LL; Department of Biochemistry and Molecular Biology, Universidade Federal de Viçosa, Viçosa 36570-000, Brazil., Mendes TAO; Department of Biochemistry and Molecular Biology, Universidade Federal de Viçosa, Viçosa 36570-000, Brazil., Dos Santos MM; Department of Animal Science, Universidade Federal de Viçosa, Viçosa 36570-000, Brazil.; Muscle Biology and Nutrigenomics Laboratory, Universidade Federal de Viçosa, Viçosa 36570-000, Brazil., Veroneze R; Department of Animal Science, Universidade Federal de Viçosa, Viçosa 36570-000, Brazil., Gionbelli MP; Department of Animal Science, Universidade Federal de Lavras, Lavras 37200-900, Brazil., Duarte MS; Department of Animal Biosciences, University of Guelph, Guelph, ON N1G 2W1, Canada. |
| Abstrakt: |
We aimed to investigate the effects of the maternal plane of nutrition during gestation on the proteome profile of the skeletal muscle of the newborn. Pregnant goats were assigned to the following experimental treatments: restriction maintenance (RM) where pregnant dams were fed at 50% of their maintenance requirements from 8−84 days of gestation, and then feed of 100% of the maintenance requirements was supplied from 85—parturition (n = 6); maintenance restriction (MR) where pregnant dams were fed at 100% of their maintenance requirements from 8−84 days of gestation, and then experienced feed restriction of 50% of the maintenance requirements from 85—parturition (n = 8). At birth, newborns were euthanized and samples of the Longissimus dorsi muscle were collected and used to perform HPLC-MS/MS analysis. The network analyses were performed to identify the biological processes and KEGG pathways of the proteins identified as differentially abundant protein and were deemed significant when the adjusted p-value (FDR) < 0.05. Our results suggest that treatment RM affects the energy metabolism of newborns’ skeletal muscle by changing the energy-investment phase of glycolysis, in addition to utilizing glycogen as a carbon source. Moreover, the RM plane of nutrition may contribute to fatty acid oxidation and increases in the cytosolic α-KG and mitochondrial NADH levels in the skeletal muscle of the newborn. On the other hand, treatment MR likely affects the energy-generation phase of glycolysis, contributing to the accumulation of mitochondrial α-KG and the biosynthesis of glutamine. |
