Difference between revisions of "Jorgensen 2009 Am J Physiol Endocrinol Metab"
| (26 intermediate revisions by 8 users not shown) | |||
| Line 1: | Line 1: | ||
{{Publication | {{Publication | ||
|title=Jørgensen W, Gam C, Andersen JL, Schjerling P, Scheibye-Knudsen M, Mortensen OH, Grunnet N, Nielsen MO, Quistorff B (2009) Changed mitochondrial function by pre- and/or postpartum diet alterations in sheep. Am | |title=Jørgensen W, Gam C, Andersen JL, Schjerling P, Scheibye-Knudsen M, Mortensen OH, Grunnet N, Nielsen MO, Quistorff B (2009) Changed mitochondrial function by pre- and/or postpartum diet alterations in sheep. Am J Physiol Endocrinol Metab 297:E1349-57. | ||
|authors=Joergensen W, Gam C, Andersen JL, Schjerling P, Scheibye-Knudsen M, Mortensen OH, Grunnet N, Nielsen MO, Quistorff B | |info=[http://www.ncbi.nlm.nih.gov/pubmed/19826104 PMID: 19826104 Open Access] | ||
|authors=Joergensen W, Gam C, Andersen JL, Schjerling P, Scheibye-Knudsen M, Mortensen OH, Grunnet N, Nielsen MO, Quistorff B | |||
|year=2009 | |year=2009 | ||
|journal= | |journal=Am J Physiol Endocrinol Metab | ||
|abstract= | |abstract=In a sheep model, we investigated diet effects on skeletal muscle mitochondria to look for fetal programming. During pregnancy, ewes were fed normally (N) or were 50 % food restricted (L) during the last trimester, and lambs born to these ewes received a normal (N) or a high-fat diet (H) for the first 6 mo of life. We examined mitochondrial function in permeabilized muscle fibers from the lambs at 6 mo of age (adolescence) and after 24 mo of age (adulthood). The postpartum H diet for the lambs induced an ~30 % increase (''P'' < 0.05) of mitochondrial ''V''<sub>O2max</sub> and an ~50 % increase (''P'' < 0.05) of the respiratory coupling ratio (RCR) combined with lower levels of UCP3 and PGC-1αmRNA levels (''P'' < 0.05). These effects proved to be reversible by a normal diet from 6 to 24 mo of age. However, at 24 mo, a long-term effect of the maternal gestational diet restriction (fetal programming) became evident as a lower ''V''<sub>O2max</sub> (~40 %, ''P'' < 0.05), a lower [[state 4]] respiration (~40 %, ''P'' < 0.05), and lower [[RCR]] (~15 %, ''P'' < 0.05). Both [[PGC-1α]] and UCP3 mRNA levels were increased (''P'' < 0.05). Two analyzed muscles were affected differently, and muscle rich in type I fibers was more susceptible to fetal programming. We conclude that fetal programming, seen as a reduced ''V''<sub>O2max</sub> in adulthood, results from gestational undernutrition. Postnatal high-fat diet results in a pronounced RCR and ''V''<sub>O2max</sub> increase in adolescence. However, these effects are reversible by diet correction and are not maintained in adulthood. | ||
|keywords= | |keywords=Metabolic syndrome, High-fat diet, Nutrient restriction, Maternal diet, Respiratory coupling control ratio | ||
| | |mipnetlab=DK Copenhagen Quistorff B | ||
|discipline=Mitochondrial Physiology, Environmental Physiology; Toxicology | |||
}} | }} | ||
{{Labeling | {{Labeling | ||
|area=Respiration | |||
|organism=Other mammals | |||
|tissues=Skeletal muscle | |||
|preparations=Permeabilized tissue | |||
|couplingstates=OXPHOS | |||
|instruments=Oxygraph-2k | |instruments=Oxygraph-2k | ||
| | |discipline=Mitochondrial Physiology, Environmental Physiology; Toxicology | ||
}} | }} | ||
Latest revision as of 20:26, 12 November 2019
| Jørgensen W, Gam C, Andersen JL, Schjerling P, Scheibye-Knudsen M, Mortensen OH, Grunnet N, Nielsen MO, Quistorff B (2009) Changed mitochondrial function by pre- and/or postpartum diet alterations in sheep. Am J Physiol Endocrinol Metab 297:E1349-57. |
Joergensen W, Gam C, Andersen JL, Schjerling P, Scheibye-Knudsen M, Mortensen OH, Grunnet N, Nielsen MO, Quistorff B (2009) Am J Physiol Endocrinol Metab
Abstract: In a sheep model, we investigated diet effects on skeletal muscle mitochondria to look for fetal programming. During pregnancy, ewes were fed normally (N) or were 50 % food restricted (L) during the last trimester, and lambs born to these ewes received a normal (N) or a high-fat diet (H) for the first 6 mo of life. We examined mitochondrial function in permeabilized muscle fibers from the lambs at 6 mo of age (adolescence) and after 24 mo of age (adulthood). The postpartum H diet for the lambs induced an ~30 % increase (P < 0.05) of mitochondrial VO2max and an ~50 % increase (P < 0.05) of the respiratory coupling ratio (RCR) combined with lower levels of UCP3 and PGC-1αmRNA levels (P < 0.05). These effects proved to be reversible by a normal diet from 6 to 24 mo of age. However, at 24 mo, a long-term effect of the maternal gestational diet restriction (fetal programming) became evident as a lower VO2max (~40 %, P < 0.05), a lower state 4 respiration (~40 %, P < 0.05), and lower RCR (~15 %, P < 0.05). Both PGC-1α and UCP3 mRNA levels were increased (P < 0.05). Two analyzed muscles were affected differently, and muscle rich in type I fibers was more susceptible to fetal programming. We conclude that fetal programming, seen as a reduced VO2max in adulthood, results from gestational undernutrition. Postnatal high-fat diet results in a pronounced RCR and VO2max increase in adolescence. However, these effects are reversible by diet correction and are not maintained in adulthood. • Keywords: Metabolic syndrome, High-fat diet, Nutrient restriction, Maternal diet, Respiratory coupling control ratio
• O2k-Network Lab: DK Copenhagen Quistorff B
Labels: MiParea: Respiration
Organism: Other mammals
Tissue;cell: Skeletal muscle
Preparation: Permeabilized tissue
Coupling state: OXPHOS
HRR: Oxygraph-2k
