RESUMO
A nomenclatura proposta no relatório de outubro de 2003 do Comitê de Revisão de Nomenclatura da World Allergy Organization é uma atualização da Nomenclatura Revisada para Declaração da Situação da Alergia da Academia Européia de Alergologia e Imunologia Clínica (European Academy of Allergology and Clinical Immunology Revised Nomenclature for Allergy Position Statement), publicada em 2001. A nomenclatura pode ser usada independentemente do órgão alvo ou da faixa etária do paciente e se baseia nos mecanismos que desencadeiam e medeiam as reações alérgicas. Supõe-se que, conforme o conhecimento sobre as causas básicas e os mecanismos for se aprimorando, a nomenclatura virá a precisar de revisão
Assuntos
Humanos , Anafilaxia , Asma , Dermatite , Eczema , Hipersensibilidade , Imunoglobulina E , Rinite , Terminologia , Reações Antígeno-Anticorpo , Métodos , Técnicas e Procedimentos DiagnósticosRESUMO
Comparison of the clinical significance and allergenic cross-reactivity of Blomia kulagini (B. kulagini) and Lepidoglyphus destructor (L. destructor) was made on sera from Sweden and Brazil using the radio-allergo-sorbent test (RAST) and the RAST inhibition technique. RAST-positive sera were obtained from 53 allergic Swedish farmers and 31 allergic subjects from Brazil who were positive to B. kulagini and/or L. destructor. B. kulagini was shown to be a common cause of sensitization especially in Brazil. There was a fairly high correlation between positive RAST results to L. destructor and B. kulagini based on sera from both Sweden and Brazil. The highest RAST scores were found against L. destructor in Swedish sera and against B. kulagini in Brazilian sera. The RAST inhibition studies showed that the L. destructor extract was able to inhibit the B. kulagini system (a positive RAST to B. kulagini allergen disc) in Swedish but not in Brazilian sera. In contrast, the B. kulagini extract was only able to inhibit the L. destructor system in sera from Brazil and not in sera from Sweden. This study shows that results obtained with RAST inhibition are not entirely dependent on the overall specificity of the IgE antibodies in the patient's sera, since the more subtle specificity of the primarily sensitizing allergen will dominate. Thus, conclusions drawn regarding allergenic cross-reactivity are dependent on the populations tested, and conclusions on the existence or absence of cross-reactivity, e.g. between two species of mites may be contradictory.
Assuntos
Alérgenos/imunologia , Ácaros/imunologia , Adolescente , Adulto , Agricultura , Animais , Brasil , Criança , Pré-Escolar , Reações Cruzadas/imunologia , Poeira/efeitos adversos , Humanos , Imunoglobulina E/análise , Imunoglobulina E/imunologia , Pessoa de Meia-Idade , Teste de Radioalergoadsorção , Inquéritos e Questionários , SuéciaRESUMO
The immune responses to the non-pyroglyphid mite Blomia kulagini and the pyroglyphid mite Dermatophagoides pteronyssinus were compared in 440 Swedish farmers and 34 allergic subjects from Brazil using the radioallergosorbent test (RAST). Both B. kulagini and D. pteronyssinus were shown to be a common cause of sensitization, particularly in Brazil. The highest RAST scores were found against D. pteronyssinus in sera from both countries. Allergenic cross-reactivity between the two mites was studied by the RAST inhibition technique. Both B. kulagini and D. pteronyssinus possess their own unique allergens as well as allergens in common. Thus, besides mites belonging to the Dermatophagoides genus, other pyroglyphid and non-pyroglyphid mites in different countries should be taken into consideration before starting hyposensitization treatments.