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Los componentes de alergenos recombinantes son un tratamiento óptimo para alergia por veneno


News provided by

Phadia

Jun 14, 2011, 08:31 ET

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UPPSALA, Suecia, June 14, 2011 /PRNewswire/ --

- Los componentes de alergenos recombinantes aseguran un tratamiento de inmunoterapia óptimo para la alergia por veneno

La evaluación precisa de pacientes con alergia a los venenos de abeja y avispa ayuda a los alergólogos a identificar la inmunoterapia de veneno optima (VIT) en cada caso. La alergología molecular con componentes alérgenos recombinantes facilita el proceso al ayudar a que sea más fácil diferenciar entre las alergias "verdaderas" y la reactividad cruzada.

     (Logo: http://www.newscom.com/cgi-bin/prnh/20101208/425503 )

Esta información se ha dado a conocer en la European Academy of Allergy and Clinical Immunology (EAACI), una reunión celebrada en Estambul del 11 al 15 de junio de 2011.    

- La toma de decisiones puede ser crucial y salvar vidas en casos de alergia por veneno de insectos, según el profesor y doctor Thilo Jakob, alergólogo del University Medical Center de Freiburg, Alemania.

Los aguijones de la familia de insectos himenópteros, como las abejas y avispas, pueden causar graves problemas a las personas que padecen alergia a los venenos. Los estudios han demostrado que la inmunoterapia de veneno óptima (VIT) mejora la seguridad y bienestar de los pacientes, proporcionando una protección eficaz contra las reacciones anafilácticas futuras. Las indicaciones para la VIT se basan en una sensitización auténtica documentada y reacciones alérgicas a los venenos desde los insectos amenazantes respectivos. El veneno o venenos correctos que se utilizarán en el tratamiento son elegidos en cada caso según la reacción del paciente a los auténticos alérgenos de veneno.

En las pruebas convencionales de test de diagnosis se utilizan extractos naturales de venenos completos para la detección de las reacciones alérgicas de veneno de abeja o avispa, y muchos de los pacientes dan positivo para la alergia a sustancias de ambos insectos, a pesar de que demuestran reacciones clínicas al veneno en de solo un tipo. En la mayor parte de los casos, como la doble positividad debido a anticuerpos específicos, denominados IgE, están dirigidos a algunas estructuras moleculares (denominados determinantes de carbohidratos de reacciones cruzadas o CCDs) que presentan varios alérgenos de veneno de abeja además de avispa. La reacción IgE a los CCDs se detecta en los test convencionales como doble positividad de ambos venenos, pero estos descubrimientos rara vez tienen relevancia clínica.

Es posible eliminar el problema de la doble positividad por medio de pruebas con componentes alérgenos recombinantes libres de los CCD. Los test que utilizan estos componentes proporcionan información detallada frente a los test habituales, pero también pueden determinar si la doble positividad ha sido causada por una auténtica sensitización al veneno o si es simplemente el resultado de una reactividad cruzada dependiente de los CCD entre los venenos.  

El test puede así discriminar entre la sensitización del veneno de la abeja y avispa también en casos de doble positividad para los extractos de venenos completos.

La diagnosis molecular con componentes alérgenos ImmunoCAP, por ejemplo, incluye las pruebas con componentes como rApi m 1 (marcadores de miel de abeja), rVes v 1, rVes v 5/rPol d 5 (marcadores de avispas) y CCD, marcador de reactividad cruzada entre varios componentes de alérgenos a los venenos.

Los ponentes en la reunión de la EAACI llegaron a la conclusión de que los extractos de veneno completes y los componentes recombinantes son necesarios para una evaluación precisa del paciente en alergia para venenos.

Si desea más información visitehttp://www.phadia.com

Acerca de Phadia
PhadiaAB es un líder global en diagnósticos de alergia, asma y enfermedades autoinmunes. El objetivo de Phadia es desarrollar de forma considerable el tratamiento de la alergia, asma y enfermedades autoinmunes, proporcionando a los profesionales de la salud tecnologías de diagnosis superiores y experiencia clínica. Phadia suministra más de 7 de cada 10 de los test de laboratorio de todo el mundo, y es una compañía de crecimiento rápido dentro de los test de autoinmunidad, suministrando 4 de cada 10 de los test de laboratorios en Europa. Phadia tiene compañías de marketing en más de 20 países y distribuidores en unos 60 países.

Contacto para medios:
Ulf Bladin
Vicepresidente de marketing, comunicaciones empresariales y asuntos científicos
Tel. +46-18-16-50-00
[email protected]

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