Zacarías-Castillo R, Hernández-Rebollar AE, Zajarias-Rabehinskey A, González-Bárcena D

Idioma: Español
Referencias bibliográficas: 62
Paginas: 335-345
Archivo PDF: 97.49 Kb.

RESUMEN

Las enfermedades cardiovasculares son la principal causa de mortalidad tanto en México como en otros países occidentales. Los factores de riesgo ateroscleróticos convencionales tales como: el tabaquismo, la hipertensión arterial sistémica, diabetes mellitus e hipercolesterolemia no explican totalmente esta asociación. Recientemente se ha reconocido que la hiperhomocisteinemia contribuye al proceso aterosclerótico de manera directa o en asociación a estos factores de riesgo al promover una lesión endotelial e inducir estrés oxidativo en la pared vascular. La homocisteína es un aminoácido generado en condiciones fisiológicas tras la ingesta de alimentos protéicos, utilizada en diversas vías metabólicas. Niveles elevados de este aminoácido en plasma (mayores de 15 mmol/L o menores en presencia de otros factores de riesgo coronario), promueven el desarrollo de aterosclerosis. El uso de suplementos de ácido fólico, vitamina B 6 y B 12 disminuyen de manera efectiva los niveles de homocisteína en plasma, por lo que es posible que tengan un papel importante en la prevención y manejo de la enfermedad vascular aterosclerótica.

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