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Factor intrínseco

Definición

Es una proteína que le ayuda a los intestinos a absorber la vitamina B12. Lo producen células en el revestimiento del estómago.

Información

El factor intrínseco se une a la vitamina B12 en el estómago. Después de que se adhieren, viajan hacia los intestinos para ser absorbidos por el torrente sanguíneo. La vitamina B12 es necesaria para que los glóbulos rojos se formen y crezcan.

Algunas personas no producen suficiente factor intrínseco o tienen una enfermedad que lo destruye. Si su cuerpo no produce suficiente factor intrínseco, se puede desarrollar un tipo de deficiencia de vitamina B12, llamada anemia perniciosa.

La extirpación quirúrgica o derivación del estómago y algunas otras afecciones también pueden provocar que se deje de producir factor intrínseco.

Referencias

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Programe una cita

Actualizado : 3/31/2024

Versión en inglés revisada por : Todd Gersten, MD, Hematology/Oncology, Florida Cancer Specialists & Research Institute, Wellington, FL. Review provided by VeriMed Healthcare Network. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

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