ANTI M. leprae IgM ANTIBODY DETERMINATION BY ULTRAMICROIMMUNOENZYMATIC (UMELISA HANSEN) FOR THE DIAGNOSIS AND MONITORING LEPROSY

The relationship between the IgM antibody response, antigenic load as well as the clinical improvement after chemotherapy was studied in order to obtain useful data for the early diagnosis and monitoring leprosy. A level of 82% (94/115) agreement was obtained between IgM UMELISA HANSEN and slitskin...

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Bibliographic Details
Published in:Revista do Instituto de Medicina Tropical de São Paulo
Main Authors: Adriana TORRELLA, Rosa L. SOLIS, Esther PEREZ, Yadira MEDINA, Carlos KERGUELEN, Patricia OLAYA
Format: Article in Journal/Newspaper
Language:English
Published: Universidade de São Paulo (USP) 1998
Subjects:
UMELISA HANSEN
Leprosy
Phenolic GlycolipidI
Arctic medicine. Tropical medicine
RC955-962
Infectious and parasitic diseases
RC109-216
Arctic
Vio
Online Access:https://doi.org/10.1590/S0036-46651998000300008
https://doaj.org/article/63a96756b49f4124a4977110a06a9061
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Summary:The relationship between the IgM antibody response, antigenic load as well as the clinical improvement after chemotherapy was studied in order to obtain useful data for the early diagnosis and monitoring leprosy. A level of 82% (94/115) agreement was obtained between IgM UMELISA HANSEN and slitskin smear examination. Discrepant results were observed in 16 patients who showed positive IgM response despite negative by the skin smear examination. In these patients, the IgM response was seen to be associated to the early signal for bacilli recurrence in the skin. In one of these patients the presence of bacilli was demonstrated in the skin, two months after IgM antibodies being detected by UMELISA HANSEN. Also in one of the treated patients positive by both diagnostic techniques, a remarkable decrease in the IgM antibody levels was seen, correlating with a significant clinical improvement. Moreover it was found a direct relationship between the IgM antibody response and bacterial antigenic load, regardless the time elapsed in the disease's evolution. El UMELISA HANSEN en el diagnostico y seguimiento de la lepra. Se analizó la relación entre la carga antigénica y la respuesta de anticuerpos IgM, el comportamiento de dicha respuesta y la utilidad de su detección para el diagnóstico y seguimiento de la lepra. Se obtuvo un 82% de coincidencia entre los resultados del UMELISA HANSEN y los de la baciloscopía. Este valor se vio afectado fundamentalmente por 16 pacientes con respuesta positiva a IgM y baciloscopía negativa. En estos pacientes de acuerdo a lo reportado, la respuesta IgM puede indicar la reaparición de bacilos, precediendo a su detección en la piel. En uno de estos pacientes se demostró la presencia de bacilos, dos meses después de resultar positivo por el UMELISA HANSEN. Entre los pacientes coincidentes en IgM y baciloscopía positivas con tratamiento quimioterapéutico, se apreció en uno de ellos una notable disminución en los niveles de IgM en correspondencia con una mejoría clínica. Además se observó una ...

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