Ingesta de sacarosa durante la preñez y la lactancia: efectos sobre el metabolismo lipídico en la descendencia adulta

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Fecha
12/2012
Editorial
Universidad Nacional del Litoral. Facultad de Bioquímica y Ciencias Biológica
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FABICIB
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0329-5559
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Español
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Resumen
:La calidad nutricional en etapas tempranas de la vida influye sobre el desarrollo de patologías crónicas del adulto. Objetivo: examinar el efecto de la dieta rica en sacarosa (DRS) durante la preñez+lactancia sobre aspectos del metabolismo lipídico de la descendencia alimentada con dieta control (DC) o DRS desde el post-destete y hasta las 21 semanas de vida (grupos: DC-DC, DC-DRS, DRS-DRS y DRS-DC). Resultados: -En los grupos DC-DRS, DRS-DRS y DRS-DC observamos mayor adiposidad, peso corporal normal y dislipidemia. Esta última resulta de acelerada secreción hepática de VLDL-Tg y mayor contenido de triglicéridos hepáticos asociado a mayor actividad de enzimas lipogénicas hepáticas: acetil-CoA carboxilasa y enzima málica (p<0.05 vs DC-DC). La actividad Glucosa-6-P-deshidrogenasa hepática fue mayor solo en los grupos DC-DRS y DRS-DRS comparado a DRS-DC y DC-DC. Conclusión: la exposición temprana a DRS conlleva en la adultez a cambios desfavorables en el metabolismo lipídico independientemente que la dieta post-lactancia sea DC o DRS.
Nutrition quality during the early steps of life has a high influence on the development of chronic adult diseases. The present study examined the effect of a sucrose-rich diet (SRD) fed to dams during pregnancy+lactation on the lipid metabolism of their adult progeny, fed a control diet (CD) or a SRD after weaning to 21 weeks of life (CD-CD, CD-SRD, SRD-SRD, SRD-CD groups). Results: Final body weight was similar between the groups although adiposity and plasma lipids were significantly higher in CD-SRD, SRD-SRD and SRD-CD vs CD-CD. The dyslipidemia was the result of an increased VLDL-Tg secretion rate and elevated liver triglyceride pool. The novo hepatic lipogenic enzymes acetyl-CoA carboxylase and malic enzyme were significantly higher in rats exposed to SRD at any period of life. On the other hand, the hepatic glucose-6-P-dehydrogenase activity was significantly higher (p<0.05) in DC-DRS and DRS-DRS compared to CD-CD and SRD-CD. Conclusion: An early life exposure to a SRD is associated with changes in lipid metabolism in the adult life regardless whether offspring consumed an SRD after weaning.
Nutrition quality during the early steps of life has a high influence on the development of chronic adult diseases. The present study examined the effect of a sucrose-rich diet (SRD) fed to dams during pregnancy+lactation on the lipid metabolism of their adult progeny, fed a control diet (CD) or a SRD after weaning to 21 weeks of life (CD-CD, CD-SRD, SRD-SRD, SRD-CD groups). Results: Final body weight was similar between the groups although adiposity and plasma lipids were significantly higher in CD-SRD, SRD-SRD and SRD-CD vs CD-CD. The dyslipidemia was the result of an increased VLDL-Tg secretion rate and elevated liver triglyceride pool. The novo hepatic lipogenic enzymes acetyl-CoA carboxylase and malic enzyme were significantly higher in rats exposed to SRD at any period of life. On the other hand, the hepatic glucose-6-P-dehydrogenase activity was significantly higher (p<0.05) in DC-DRS and DRS-DRS compared to CD-CD and SRD-CD. Conclusion: An early life exposure to a SRD is associated with changes in lipid metabolism in the adult life regardless whether offspring consumed an SRD after weaning.
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