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Inmunidad, inflamación y alergia en el intestino
Thomas T Macdonald1, Giovanni Monteleone
1Division of Infection, Inflammation, and Repair, University of Southampton School of Medicine, Southampton General Hospital, Southampton, SO16 6YD, UK. t.t.macdonald@qmul.ac.uk
Science (New York, N.Y.)
|March 26, 2005
Resumen
El sistema inmune intestinal lucha por equilibrar la defensa contra los patógenos con la tolerancia a los alimentos y los microbios. Las alteraciones en este equilibrio están vinculadas a enfermedades inflamatorias intestinales comunes y alergias.
Área de la Ciencia:
- Inmunología Inmunología.
- Gastroenterología y Gastroenterología.
- Microbiología Microbiología.
Sus antecedentes:
- El sistema inmune intestinal debe diferenciar entre patógenos dañinos y antígenos inofensivos como los alimentos y las bacterias comensales.
- Una ruptura en esta tolerancia inmune se asocia cada vez más con la inflamación intestinal crónica en las naciones desarrolladas, a menudo sin una infección clara.
- Los factores genéticos que influyen en el reconocimiento inmune, la inmunidad adaptativa y la función de la barrera epitelial están implicados en la inflamación intestinal.
Objetivo del estudio:
- Investigar los mecanismos subyacentes a la ruptura de la homeostasis inmune intestinal.
- Explorar la relación entre las mutaciones genéticas y el desarrollo de la inflamación intestinal y las alergias.
- Identificar los determinantes críticos en la patogénesis de las enfermedades inflamatorias intestinales.
Principales métodos:
- Análisis de mutaciones genéticas que afectan la inmunidad innata y adaptativa en modelos de ratón y humanos.
- Evaluación de la permeabilidad epitelial en el contexto de la exposición al antígeno intestinal.
- Estudios comparativos tanto en ratones como en sujetos humanos que presentan inflamación intestinal.
Principales resultados:
- Las mutaciones en los genes que controlan el reconocimiento inmune innato están asociadas con la inflamación intestinal.
- Los defectos en las vías de inmunidad adaptativa contribuyen al desarrollo de enfermedades inflamatorias intestinales.
- La permeabilidad epitelial alterada es un factor significativo en la patogénesis de la inflamación intestinal y la alergia.
Conclusiones:
- Perturbar el delicado equilibrio entre los antígenos intestinales y el sistema inmunológico del huésped es un factor clave en el desarrollo de la inflamación intestinal.
- Las predisposiciones genéticas juegan un papel crucial en la susceptibilidad a las enfermedades inflamatorias intestinales.
- Restaurar o mantener la homeostasis inmune intestinal es fundamental para prevenir la inflamación intestinal y las alergias.
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