Muscle glycogen metabolism changes in rats fed early postnatal a fructose-rich diet after maternal protein malnutrition: effects of acute physical exercise at the maximal lactate steady-state intensity

Autor(es)

Cambri, Lucieli T. ^{[1, 2, 3]} ; Ribeiro, Carla ^[1] ; Botezelli, Jose D. ^[1] ; Ghezzi, Ana C. ^[1] ; Mello, Maria A. R. ^[1]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ UNESP, Rio Claro, SP - Brazil

^[2] Fed Univ Mato Grosso UFMT, Cuiaba, MT - Brazil

^[3] Univ Fed Mato Grosso, Dept Phys Educ, BR-78060900 Cuiaba, MT - Brazil

• Tipo de documento: Artigo Científico
• Fonte: DIABETOLOGY & METABOLIC SYNDROME; v. 6, NOV 6 2014.
• Citações Web of Science: 0

Resumo

Background: The objective was to evaluate the muscle glucose metabolism in rats fed a fructose-rich diet after fetal protein malnutrition, at rest and after acute physical exercise at maximal lactate steady-state intensity. Methods: The male offspring born of mothers fed on a balanced or low-protein diet were split in four groups until 60 days: Balanced (B): balanced diet during the whole period; Balanced/Fructose (BF): balanced diet in utero and fructose-rich diet after birth; Low protein/Balanced (LB): low-protein diet in utero and balanced diet after birth; Low protein/Fructose (LF): low protein diet in utero and fructose-rich diet after birth. Results: Acute physical exercise reduced the muscle glycogen concentrations in all groups, although the LF group showed higher concentrations at rest. There was no difference among the groups in the glucose uptake and oxidation rates in the isolated soleus muscle neither at rest nor after acute exercise. However, glycogen synthesis was higher in the LF muscle than in the others at rest. Acute physical exercise increased glycogen synthesis in all groups, and the LF group showed the highest values. Conclusion: The fructose-rich diet administered in rats after fetal protein malnutrition alters muscle glycogen concentrations and glycogen synthesis in the rest and after acute exercise at maximal lactate steady-state intensity. (AU)

• Processo FAPESP: 08/53255-8 - Impacto da desnutricao intra-uterina na homeostase glicemica e na capacidade aerobia de ratos adultos
• Beneficiário: Lucieli Teresa Cambri
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 13/20293-2 - Efeitos do exercício de endurance e de força nas vias de captação de glicose em camundongos nocaute heterozigotos GLUT4
• Beneficiário: José Diego Botezelli
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado