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La inducción mediada por interleucina-1beta de Cox-2 en el SNC contribuye a la hipersensibilidad al dolor
T A Samad1, K A Moore, A Sapirstein
1Department of Anatomy, University College London, London WC1E 6BT, UK.
Nature
|March 22, 2001
Resumen
La inflamación induce la ciclooxigenasa-2 (Cox-2) en el sistema nervioso central, aumentando la sensibilidad al dolor. La inhibición de Cox-2 o la interleucina-1beta reduce este dolor inducido por la inflamación.
Área de la Ciencia:
- La neurociencia es la neurociencia.
- Investigación de la inflamación en la investigación de la inflamación.
- Manejo del dolor Manejo del dolor.
Sus antecedentes:
- La inflamación desencadena la ciclooxigenasa-2 (Cox-2), produciendo prostanoides que causan hipersensibilidad localizada al dolor.
- La inflamación periférica también conduce a hiperalgesia secundaria y síntomas sistémicos a través de la sensibilización central.
Objetivo del estudio:
- Investigar el papel de Cox-2 en las respuestas del sistema nervioso central (SNC) a la inflamación periférica.
- Identificar los mecanismos de la inducción central de Cox-2 y su impacto en la hipersensibilidad al dolor.
Principales métodos:
- Examinó la expresión de Cox-2 en las neuronas de la médula espinal y otras regiones del SNC después de la inflamación periférica.
- Se midieron los niveles de prostaglandina E2 (PGE2) en el líquido cefalorraquídeo.
- La administración intraspinal de la enzima de conversión de la interleucina o los inhibidores de Cox-2.
Principales resultados:
- Se ha demostrado una amplia inducción de Cox-2 en el SNC, elevando los niveles centrales de PGE2.
- Se identificó a la interleucina-1beta como el inductor primario de la regulación central de la Cox-2.
- Se demostró que la inhibición de la enzima de conversión de interleucina o Cox-2 redujo la PGE2 inducida por la inflamación y la hiperalgesia mecánica.
Conclusiones:
- Cox-2 juega un papel crucial en los mecanismos del sistema nervioso central del dolor inflamatorio.
- La inhibición de la inducción de Cox-2 mediada por la interleucina-1beta o la actividad central de Cox-2 puede reducir la hipersensibilidad al dolor inflamatorio generado centralmente.
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