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La insuficiencia multiorgánica es una respuesta metabólica adaptativa, mediada por el sistema endocrino, a una
Mervyn Singer1, Vincenzo De Santis, Domenico Vitale
1Bloomsbury Institute of Intensive Care Medicine, Wolfson Institute of Biomedical Research and Department of Medicine, University College London, London, UK. m.singer@ucl.ac.uk
Lancet (London, England)
|August 11, 2004
Resumen
Enfermedades críticas como la sepsis desencadenan una respuesta protectora, no una insuficiencia orgánica. La reducción del metabolismo celular y la actividad mitocondrial puede mejorar la supervivencia durante la inflamación grave.
Área de la Ciencia:
- Medicina de cuidados críticos Medicina de cuidados críticos.
- El metabolismo celular es el metabolismo celular.
- Inmunología Inmunología.
Sus antecedentes:
- La sepsis y las enfermedades críticas inducen una respuesta bifásica compleja que involucra inflamación, cambios inmunológicos, hormonales y metabólicos.
- La fase aguda se caracteriza por aumentos de las hormonas del estrés y un aumento de la actividad mitocondrial.
- La inflamación severa y los cambios endocrinos perjudican la producción de energía celular, lo que lleva a la disfunción de los órganos.
Objetivo del estudio:
- Proponer que la disfunción de múltiples órganos en enfermedades críticas es un mecanismo funcional y protector en lugar de una falla estructural.
- Para investigar el papel de la disfunción mitocondrial en el deterioro de los órganos.
- Explorar el vínculo entre los cambios hormonales / inflamatorios en la fase aguda y los efectos mitocondriales.
Principales métodos:
- Este estudio es principalmente conceptual, proponiendo un nuevo marco basado en la literatura existente.
- Sintetiza los hallazgos sobre las respuestas inflamatorias, hormonales y metabólicas en enfermedades críticas.
- El mecanismo propuesto implica analizar el impacto de estos cambios en el metabolismo celular y la función de los órganos.
Principales resultados:
- La disfunción múltiple de órganos puede representar un estado protector y reactivo, no una verdadera falla.
- La disminución de la actividad mitocondrial y la fosforilación oxidativa reducen el metabolismo celular.
- Los mediadores hormonales e inflamatorios de la fase aguda probablemente desencadenen la disfunción mitocondrial.
Conclusiones:
- La disfunción orgánica en enfermedades críticas es una adaptación funcional para conservar la energía celular.
- La reducción de la función mitocondrial es un factor clave de esta respuesta adaptativa.
- Las cascadas hormonales e inflamatorias en la enfermedad crítica median este cambio metabólico protector.
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