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El factor nuclear-kappaB se activa de manera selectiva y marcada en humanos con angina de pecho inestable
1Division of Cardiology and Cardiovascular Research Center, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA. Michael.Ritchie@uc.edu
Circulation
|October 27, 1998
Resumen
La activación del factor nuclear-kappaB (NF-kappaB) está significativamente elevada en pacientes con angina inestable, lo que sugiere su papel en los síndromes coronarios agudos. Esta activación fue específica y no relacionada con la gravedad o el tratamiento de la enfermedad arterial coronaria.
Área de la Ciencia:
- Cardiología Cardiología.
- Biología Molecular Biología Molecular
- Investigación de la inflamación Investigación de la inflamación.
Sus antecedentes:
- El factor nuclear-kappaB (NF-kappaB) es un factor de transcripción que regula las respuestas inflamatorias.
- La activación de NF-kappaB está implicada en la inflamación aguda y potencialmente en la ruptura de la placa de la arteria coronaria.
- Comprender el papel de NF-kappaB en la enfermedad de las arterias coronarias (CAD) es crucial para el manejo de los síndromes coronarios agudos.
Objetivo del estudio:
- Para investigar la correlación entre la activación de NF-kappaB y la actividad de la enfermedad arterial coronaria (CAD).
- Para determinar si la activación de NF-kappaB está específicamente asociada con la angina inestable (EE.UU.).
- Explorar el papel potencial de NF-kappaB en la fisiopatología de los síndromes coronarios agudos.
Principales métodos:
- Se evaluó la activación de NF-kappaB en 102 pacientes sometidos a cateterismo cardíaco utilizando ensayos de desplazamiento de electromovilidad (EMSA).
- Se analizaron muestras de sangre de pacientes con angina inestable, angina estable y otras afecciones cardíacas.
- Se confirmó la especificidad y funcionalidad de la activación de NF-kappaB a través de la competencia, los EMSA de súper desplazamiento y la estimulación de lipopolisacáridos.
Principales resultados:
- Se observó una activación marcada de NF-kappaB en 17 de los 19 pacientes con angina inestable (EE.UU.).
- Solo 2 de 83 pacientes sin EE.UU. mostraron una marcada activación de NF-kappaB, a pesar de la CAD severa en muchos.
- La activación de NF-kappaB fue específica y no estaba relacionada con otros factores de transcripción, la gravedad de la ECA o los medicamentos.
Conclusiones:
- La NF-kappaB se activa específica y significativamente en la angina de pecho inestable.
- Esta activación parece estar involucrada mecánicamente en la ruptura de la placa que conduce a los síndromes coronarios agudos.
- La activación de NF-kappaB puede servir como un indicador temprano que precede a los eventos clínicos en los síndromes coronarios agudos.
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