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La proteína dietética de diferentes fuentes escapa a la digestión del huésped y es modificada diferencialmente por la
Ayesha Awan1, Alexandria Bartlett1,2, J Alfredo Blakeley-Ruiz1
1Department of Plant and Microbial Biology, College of Agriculture and Life Sciences, North Carolina State University, Raleigh, NC, 27606, USA. aawan2@ncsu.edu.
Food & function
|September 1, 2025
Resumen
Las fuentes de proteínas dietéticas tienen un impacto significativo en la microbiota intestinal y la salud del huésped. Incluso las proteínas altamente digeribles llegan al colon, donde los microbios intestinales las degradan aún más, influyendo en los resultados de salud.
Área de la Ciencia:
- Microbiología
- Ciencias de la nutrición
- Gastroenterología
Sus antecedentes:
- La proteína de la dieta es crucial para la salud, pero su fuente afecta los resultados de la salud.
- La digestión de las proteínas y su destino en la microbiota intestinal no se comprenden completamente.
- Comprender el impacto de la fuente de proteínas en la microbiota intestinal es clave para explicar los efectos diferenciales en la salud.
Objetivo del estudio:
- Investigar la digestión del huésped y la utilización de la microbiota intestinal de proteínas dietéticas de diversas fuentes.
- Para identificar proteínas específicas que escapan a la digestión del huésped y son metabolizadas por los microbios intestinales.
- Para aclarar cómo la actividad microbiana influye en la composición y el destino de las proteínas dietéticas en el intestino.
Principales métodos:
- Se utilizó la espectrometría de masas de alta resolución para cuantificar las proteínas en diferentes fuentes dietéticas.
- Perfiles de proteínas analizados antes y después de la digestión en ratones libres de gérmenes y criados convencionalmente.
- Comparación de la degradación y el enriquecimiento de proteínas en muestras fecales.
Principales resultados:
- Se detectaron proteínas de todas las fuentes en las heces, lo que indica la presencia de colon incluso para proteínas altamente digeribles.
- La microbiota intestinal degradó significativamente las proteínas dietéticas específicas, con eficiencias variables.
- Ciertas proteínas que influyen en la salud del huésped mostraron un enriquecimiento diferencial basado en la presencia microbiana.
Conclusiones:
- Las fuentes de proteínas en la dieta muestran destinos distintos dentro del tracto gastrointestinal.
- La microbiota intestinal juega un papel crítico en la degradación y transformación de las proteínas dietéticas.
- Las diferencias en el procesamiento de proteínas por el huésped y la microbiota pueden explicar los diversos impactos en la salud de las diferentes fuentes de proteínas.
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