Early exercise regimen improves insulin sensitivity in the intrauterine growth-restricted adult female rat offspring
| Autor: | Manikkavasagar Thamotharan, Duncan C. MacLaren, Sherin U. Devaskar, Paul W. N. Lee, Gerald Pan, Shilpa A. Oak, Meena Garg |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Blood Glucose
congenital hereditary and neonatal diseases and abnormalities medicine.medical_specialty Time Factors Physiology Offspring Endocrinology Diabetes and Metabolism medicine.medical_treatment Biology Rats Sprague-Dawley Insulin resistance Pregnancy Physical Conditioning Animal Physiology (medical) Internal medicine medicine Animals Insulin Body Weights and Measures reproductive and urinary physiology computer.programming_language Glucose tolerance test Fetal Growth Retardation medicine.diagnostic_test sed Skeletal muscle Articles Glucose Tolerance Test medicine.disease female genital diseases and pregnancy complications Rats Glucose Endocrinology medicine.anatomical_structure Animals Newborn Basal (medicine) Prenatal Exposure Delayed Effects embryonic structures biology.protein Female Insulin Resistance computer Algorithms GLUT4 |
| Zdroj: | American Journal of Physiology-Endocrinology and Metabolism. 296:E272-E281 |
| ISSN: | 1522-1555 0193-1849 |
| DOI: | 10.1152/ajpendo.90473.2008 |
| Popis: | We examined the effect of early exercise training (Ex) on glucose kinetics, basal, and insulin-stimulated skeletal muscle (SKM) plasma membrane (PM) GLUT4 in pre- and/or postnatal nutrient-restricted adult rat offspring compared with sedentary (Sed) state. Pregestational control female (Ex CON vs. Sed CON) and offspring exposed to prenatal (Ex IUGR vs. Sed IUGR), postnatal (Ex PNGR vs. Sed PNGR), or pre- and postnatal (Ex IUGR + PNGR vs. Sed IUGR + PNGR) nutrient restriction were studied. The combined effect of exercise and pre/postnatal nutrition in the Ex IUGR demonstrated positive effects on basal and glucose-stimulated plasma insulin response (GSIR) with suppression of endogenous hepatic glucose production (HGP) compared with sedentary state. Ex PNGR was hyperglycemic after glucose challenge with no change in glucose-stimulated insulin production or HGP compared with sedentary state. Ex IUGR + PNGR remained glucose tolerant with unchanged glucose-stimulated insulin production but increased endogenous HGP compared with sedentary state. Basal SKM PM-associated GLUT4 was unchanged by exercise in all four groups. Whereas Ex PNGR and Ex IUGR + PNGR insulin responsiveness was similar to that of Ex CON, Ex IUGR remained nonresponsive to insulin. Early introduction of regular Ex in the pregestational female offspring had a positive effect on hepatic adaptation to GSIR and HGP in IUGR and IUGR + PNGR, with no effect in PNGR. Change in insulin responsiveness of SKM GLUT4 translocation was observed in exercised IUGR + PNGR and PNGR but not in exercised IUGR. |
| Databáze: | OpenAIRE |
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