RESUMO
La inmunofijación es un método simple para la rápida e inequívoca tipificación de Inmunoglobulinas Monoclonales (Igm). Consiste en un fraccionamiento electroforético previo, seguido de una reacción Antígeno-Anticuerpo in situ. En esta técnica se utiliza acetato de celulosa como medio soporte. Pueden tipificarse hasta 8 muestras por cada tira de 5,7 x 10,5 cm y se utilizan solamente 2,5 micronl de antisuero por muestra. La sensibilidad del método es del orden de los 10 ng/micronl y la caracterización inmunológica de las Igm puede realizarse en alrededor de 60 minutos
Assuntos
Doença das Cadeias Pesadas/diagnóstico , Imunoeletroforese , Imunoglobulina M/análise , Mieloma Múltiplo/diagnóstico , Macroglobulinemia de Waldenstrom/diagnóstico , Eletroforese em Gel de Ágar , Eletroforese em Acetato de CeluloseRESUMO
A 61-year-old Thai man presented with a history of chronic diarrhoea of 1-2 years duration. Stool examination revealed a heavy parasitic infection. Several anthelminthics were given without benefit, despite disappearance of the intestinal parasites. Serum protein studies revealed abnormal alpha heavy chain. Two courses of cyclophosphamide, vincristine and prednisolone were followed by a brief remission in his symptoms. A 21 day course of tetracycline was then given, resulting in an improvement in his condition. He is still symptom free nine months after confirmation of the diagnosis, without any further treatment. Serum protein studies should be included in laboratory investigations of a patient with chronic diarrhoea.