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Leukotrieno E4 y la infiltración granulocítica en las vías respiratorias asmáticas
L A Laitinen1, A Laitinen, T Haahtela
1Department of Pulmonary Medicine, Helsinki University Central Hospital, Finland.
Lancet (London, England)
|April 17, 1993
Resumen
Los leucotrienos sulfidopéptidos, como el leucotrieno LTE4, aumentan la inflamación de las vías respiratorias mediante el reclutamiento de eosinófilos y neutrófilos en el asma. Dirigirse a estos mediadores puede ofrecer beneficios antiinflamatorios y de ahorro de esteroides para pacientes con asma.
Área de la Ciencia:
- Inmunología Inmunología.
- Pulmonología Pulmonología.
- Farmacología Farmacología.
Sus antecedentes:
- Los leucotrienos sulfidopéptidos son potentes broncoconstrictores.
- Aumentan la hiperreactividad bronquial, una característica clave del asma.
Objetivo del estudio:
- Para investigar los cambios celulares en la mucosa de las vías respiratorias después de la inhalación de leucotrieno LTE4 en sujetos asmáticos.
- Evaluar el potencial de dirigirse a los leucotrienos sulfidopéptidos para el tratamiento del asma.
Principales métodos:
- Inhalación de leucotrieno LTE4 en cuatro sujetos asmáticos.
- Análisis del recuento de células inflamatorias en biopsias de la mucosa de las vías respiratorias 4 horas después de la inhalación.
Principales resultados:
- La inhalación de leucotrieno LTE4 aumentó significativamente los eosinófilos y neutrófilos en la lámina propia de las vías respiratorias.
- Los números de eosinófilos fueron aproximadamente 10 veces más altos que los números de neutrófilos.
- No se observaron cambios significativos en los linfocitos, las células plasmáticas, los mastocitos o los macrófagos.
Conclusiones:
- El leucotrieno LTE4 actúa como un potente reclutador de granulocitos, específicamente los eosinófilos, en las vías respiratorias asmáticas.
- Los fármacos de leucotrieno antisulfidopéptido merecen una investigación como posibles terapias antiinflamatorias y esteroideas para el asma.
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