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1.
Allergol. immunopatol ; 47(1): 12-15, ene.-feb. 2019. graf
Artigo em Inglês | IBECS (Espanha) | ID: ibc-180765

RESUMO

Introduction and objectives: Profilin is a panallergen contained in pollen, plant foods and latex. Although cross-reactivity is expected while performing skin prick tests (SPT) with allergens that contain profilin, this is not always noticed. The purpose of this study was to detect if profilin is contained in the commercial SPT extracts of pollen and plant foods which, in their fresh form, contain determined epitopes of profilin. Material and methods: Commercial SPT extracts of different pharmaceuticals were analyzed using sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE). The study included purified palm date profilin, peach (whole, pulp and peel extracts), hazelnut, Olea europea, Parietaria judaica and Phleum pratense. Results: Profilin was detected in all, but peach extracts; it was neither contained in the whole peach extract nor in the ones of peel or pulp. Conclusion: The only accurate way to detect sensitization to profilin, while performing SPT, is the use of purified profilin extract. Even if a plant food or pollen contain an identified molecule of profilin, the relevant SPT commercial extract may not


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Assuntos
Humanos , Alérgenos/metabolismo , Antígenos de Plantas/metabolismo , Hipersensibilidade/diagnóstico , Extratos Vegetais/metabolismo , Erros de Diagnóstico/prevenção & controle , Profilinas/metabolismo , Testes Cutâneos/métodos , Alérgenos/imunologia , Antígenos de Plantas/imunologia , Reações Cruzadas , Frutas/imunologia , Olea/imunologia , Parietaria/imunologia , Extratos Vegetais/imunologia , Pólen/imunologia , Profilinas/imunologia , Prunus persica/imunologia
2.
West Indian med. j ; 59(3): 287-290, June 2010. tab
Artigo em Inglês | LILACS | ID: lil-672620

RESUMO

OBJECTIVE: The aim of this study is to evaluate the usefulness of Free Running Asthma Screening Test (FRAST) as a method that may help the diagnosis of exercise-induced bronchospasm (EIB) in children from a rural area and to compare the results with their history of asthma. METHODS: A FRAST challenge took place at 9 schools. It lasted for 6 minutes and pupils performed it properly with the help of an athlete. The best out of three Peak Expiratory Flow Rate (PEFR) efforts was recorded before and after challenge, using a mini-Wright peak-flow-meter. A more than 15% drop in PEFR was considered an indication of EIB. A questionnaire defining asthmatic symptoms had been distributed and already completed by their parents. RESULTS: The exercise was successfully performed by 268 children. Eleven children presented a fall of PEFR of at least 15%, five or ten minutes after the exercise; among these, only three boys had a history of asthma, while the remaining 8 children were undiagnosed. No difference regarding age, gender or locations' altitude was found. CONCLUSION: FRAST can be of great use in the diagnosis of EIB in areas that lack proper tools and specialized personnel. A poor correlation between self-reported symptoms and the results of exercise challenges was confirmed.


OBJETIVO: El objetivo de este estudio fue evaluar la utilidad de la prueba de la carrera libre para el tamizaje del asma (PCLTA) como método que puede ayudar al diagnóstico del broncoespasmo inducido por ejercicio (BEI) en los niños de un área rural, y comparar los resultados con su historia de asma. MÉTODOS: Una prueba de reto PCLTA tuvo lugar en 9 escuelas. La prueba tuvo una duración de 6 minutos, y los alumnos la realizaron correctamente con la ayuda de un atleta. El mejor de tres esfuerzos de la tasa de flujo espiratorio máximo (TFEM) fue registrado antes y después de la prueba, usando un medidor Mini-Wright de flujo espiratorio máximo. Una caída de más del 15% en la TFEM fue considerada una indicación de BEI. Un cuestionario que define los síntomas asmáticos había sido distribuido y respondido por sus padres. RESULTADOS: El ejercicio se realizó con éxito por 268 niños. Once niños presentaron una caída de TFEM de por lo menos 15%, cinco o diez minutos después del ejercicio. De ellos, tres varones tenían una historia de asma, mientras los otros 8 niños restantes no tenían diagnóstico. No se halló diferencia con respecto a edad, género o altitud de las localizaciones. CONCLUSIÓN: La prueba PCLTA puede ser de gran utilidad en el diagnóstico de BEI en áreas en las que faltan las herramientas apropiadas y el personal especializado. Se confirmó la existencia de una pobre correlación entre los síntomas auto-reportados y los resultados de los ejercicios de reto.


Assuntos
Criança , Feminino , Humanos , Masculino , Asma Induzida por Exercício/diagnóstico , Teste de Esforço , Programas de Rastreamento , Inquéritos e Questionários
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