EFECTO DEL ÁCIDO ASCÓRBICO SOBRE LA ACTIVIDAD DE LA LIPOPROTEÍN LIPASA Y SU IMPACTO EN EL DESARROLLO DE ENFERMEDADES CARDIOVASCULARES
Abstract
El objetivo del trabajo fue evaluar la influencia del ácido ascórbico (AA) sobre el metabolismo lipídico y su efecto protector frente al riesgo de desarrollar enfermedades cardiovasculares. Durante 7 semanas se alimentaron a ratas albinas Sprague Dawley con dietas normal (grasa total 8%) y grasosa (grasa total 13%) bajo la administración de 14 mg/día de AA. Se analizó la lipemia, lipoproteinemia y actividad de Lipoproteín lipasa (LPL). Se evaluó la variación
entre los tratamientos mediante los test de Tukey y Dunnett y además se realizó un análisis de correlación entre los niveles de vitamina C sérica y la actividad de la LPL frente a la distribución de colesterol y lipoproteínas séricas. Finalmente se estimó el riesgo de enfermedad coronaria. Un significativo aumento de la actividad de la LPL de tejido adiposo fue observada en ratas suplementadas con AA asociada a una significativa reducción de la lipemia, triacilglicerolemia y colesterolemia, LDL y VLDL, mientras que los niveles de HDL aumentaron. Además se encontróque la concentración de vitamina C sérica y la actividad de LPL muestran una correlación directa con la concentración de HDL y una relación inversa con LDL y Colesterol. CONCEl rol del ácido ascórbico sobre el metabolismo lipídico se manifiesta en la activación de la LPL, lo que conduce a una favorable redistribución de los niveles lipídicos y lipoproteicos. La administración de ácido ascórbico disminuye en un 12-37% la tasa de riesgo de enfermedades coronarias y otras dislipidemias directamente mediada por una severa activación de la LPL adiposa.
Palabras clave: Acido ascórbico, lipoproteín lipasa, colesterol sérico, colesterol, enfermedades Ascorbic acid, lipoprotein lipase, serum cholesterol cholesterol, cardiovascular disease
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