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Variación de la comunidad bacteriana en los hábitats del cuerpo humano a través del espacio y el tiempo
Elizabeth K Costello1, Christian L Lauber, Micah Hamady
1Department of Chemistry and Biochemistry, University of Colorado, Boulder, CO 80309, USA.
Resumen
El cuerpo humano El cuerpo humano.
Área de la Ciencia:
- Investigación del microbioma humano Investigación del microbioma humano.
- Biogeografía de la comunidad bacteriana.
- Interacciones huésped-micróbio.
Sus antecedentes:
- Comprender el microbioma humano es crucial para identificar los cambios microbianos asociados a la enfermedad.
- El establecimiento de líneas de base microbianas saludables requiere el conocimiento de las distribuciones espaciales y temporales.
Objetivo del estudio:
- Trazar un mapa exhaustivo de la dinámica espacial y temporal de las comunidades bacterianas en diversos sitios del cuerpo en adultos sanos.
- Determinar los principales impulsores de la composición y la variabilidad de la microbiota humana.
Principales métodos:
- Las bacterias examinadas de hasta 27 sitios corporales en 7-9 adultos sanos en cuatro puntos de tiempo distintos.
- Analizó la composición de la comunidad para comprender los patrones de distribución espacial y temporal.
Principales resultados:
- El hábitat del cuerpo fue el principal determinante de la composición de la comunidad bacteriana.
- Se observó una alta variabilidad interpersonal dentro de los hábitats, en contraste con una mínima variabilidad temporal dentro de los individuos.
- Ciertos sitios de la piel exhibieron una mayor diversidad bacteriana que el intestino y la boca.
Conclusiones:
- La microbiota humana, aunque personalizada, muestra variaciones sistemáticas a través de los hábitats del cuerpo y el tiempo.
- Estas tendencias sistemáticas proporcionan una base para investigar cómo las alteraciones del microbioma contribuyen o protegen contra las enfermedades.
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