Antianalgesia por colecistoquinina: las señales de seguridad eliminan la analgesia por morfina
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Updated: Jul 18, 2026
07:09
The Sciatic Nerve Cuffing Model of Neuropathic Pain in Mice
Published on: July 16, 2014
E P Wiertelak1, S F Maier, L R Watkins
1Department of Psychology, University of Colorado, Boulder 80309.
Science (New York, N.Y.)
|May 8, 1992
Resumen
Las señales de seguridad inhiben el alivio del dolor mediante la activación del neuropéptido colecistoquinina en la médula espinal, contrarrestando la morfina.
Área de la Ciencia:
- La neurociencia es la neurociencia.
- Investigación del dolor Investigación del dolor.
- Farmacología de los opiáceos.
Sus antecedentes:
- Las señales ambientales que señalan el peligro activan los sistemas endógenos de alivio del dolor.
- Por el contrario, las señales que indican seguridad inhiben estos mecanismos de alivio del dolor.
Objetivo del estudio:
- Para investigar cómo las señales de seguridad afectan a la analgesia inducida por la morfina.
- Identificar los mecanismos neuroquímicos que subyacen al efecto analgésico de las señales de seguridad.
Principales métodos:
- Administración de morfina directamente a la médula espinal.
- Exposición a estímulos ambientales que señalan la seguridad.
- Medición de los efectos analgésicos y la liberación de neuropéptidos.
Principales resultados:
- Los estímulos ambientales que señalan la seguridad abolieron los efectos analgésicos de la morfina espinal.
- Este efecto analgésico fue mediado por la liberación de colecistoquinina en la médula espinal.
Conclusiones:
- La liberación de colecistoquinina en la médula espinal, desencadenada por señales de seguridad, inhibe la analgesia opiácea.
- Este mecanismo puede desempeñar un papel en la regulación de la percepción del dolor y el desarrollo de la tolerancia a los opiáceos.
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