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Author Spotlight: Studying the Impact of Maternal Dietary Deficiencies on Long-Term Offspring Health Outcomes
Published on: June 28, 2024
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Maternal Nutrient Restriction and Skeletal Muscle Development: Consequences for Postnatal Health
Camila Sandoval1, Guoyao Wu1, Stephen B Smith1
1Department of Animal Science, Texas A&M University, College Station, TX, USA.
Advances in Experimental Medicine and Biology
|August 8, 2020
Summary
Maternal nutrient restriction during pregnancy programs skeletal muscle, increasing offspring
Area of Science:
- Developmental biology
- Metabolic health
- Nutritional science
Background:
- Severe undernutrition and famine are global concerns, with increasing cases in developing nations.
- Prenatal nutrient restriction (NR) impacts fetal growth, leading to small for gestational age (SGA) or intrauterine growth restricted (IUGR) offspring.
- SGA/IUGR offspring face elevated risks for metabolic syndrome in adulthood.
Purpose of the Study:
- To investigate the programming effects of maternal NR on skeletal muscle development and function.
- To elucidate the molecular mechanisms underlying skeletal muscle alterations due to prenatal NR.
- To identify potential therapeutic targets for mitigating adverse postnatal health outcomes.
Main Methods:
- Utilized diverse animal models (ovine, swine, rodent) to study prenatal NR effects.
- Analyzed skeletal muscle characteristics including myofiber composition, protein synthesis, and mitochondrial function.
- Examined intramuscular triglyceride accumulation and oxidative enzyme activity.
Main Results:
- Maternal NR alters skeletal muscle by affecting myofiber number, hypertrophy, and type composition.
- Prenatal NR leads to decreased protein synthesis, reduced mitochondrial content, and lower oxidative enzyme activity.
- Increased intramuscular triglycerides and a phenotype prone to insulin resistance, type 2 diabetes, and obesity are observed.
Conclusions:
- Maternal NR significantly impacts skeletal muscle development, predisposing offspring to metabolic disorders.
- Understanding molecular pathways is crucial for developing interventions against NR-induced health issues.
- Targeting skeletal muscle programming may offer strategies to improve long-term metabolic health in at-risk populations.
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