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ORIGINAL ARTICLE

Immunocytomonitorization in patients submitted to cardiac transplantation

Ricardo Manrique; Eliete C Carvalho

DOI: 10.1590/S0102-76381990000100007

ABSTRACT

The immunocytomonitorization technique (CIM - Cytological and Immunologic Monitoring) is based on assessment of changes in the subpopulations of lyphocyte and their precursor cells, while under the acute rejection. The method assesses the precocious activation by counting the number of the lymphocytes normal and actives, lymphoblasts and prolymphocytes (here we state in terms of a set of active lymphocytes). The technique was applied to follow-up and control of activity of cellular immunology in nine patients submitted to cardiac transplantation, twenty normal volunteers, and five patients candidates to cardiac transplantation. We also submitted to the CIM test, in order to obtain the normal range of lymphocytic activity in the brazilian population. Both groups had not antecedents, either infectious or immunological, chronic or acute pictures. Ten patients with acute bacteriological or viral infection had been tested as a positive control. In normal individuals, we found 1,8% (+/- 1.088) of active lymphocytes and 3,2% (+/0,49) in candidates for cardiac transplantation. In our experience, values above are indicators of an immunological reactivity related to infection or rejection. Out of the 63 tests performed to the cardiac transplanted patients, four of them were positive, three cases related to infectious complications and one was confirmed as a process of acute graft rejection in progress. The mean time for the CIM execution was about two hours. The method was successful for the immunological diagnosis in transplanted cardiacs, due to its sensibility, low costs and promptness of results.

RESUMO

A técnica de Imunocitomonitorização (CIM - Cytologrcal and Immunologic Monitoring), fundamenta-se na avaliação de mudanças nas subpopulações de linfócitos e seus precursores celulares, durante o processo rejeição aguda. O método avalia a ativação precoce pela contagem do número de: linfócitos ativados, linfoblastos e prolinfócitos (aqui chamados em conjunto de linfócitos ativos), quando esses se apresentam acima do limite superior normal. Utilizamos essa técnica para seguimento e controle da atividade da imunologia celular em 9 pacientes transplantados cardíacos. Também foram submetidos ao CIM para verificar a faixa de normalidade de ativação linfocítica 20 voluntários normais e cinco pacientes candidatos ao transplante cardíaco. Ambos os grupos não tinham antecedentes de quadro de infecção ou alteração imunológica. Para obtenção do controle positivo, testamos 10 pacientes com infecção bacteriana ou virai, previamente diagnosticados por exames bacterianos e/ou sorológicos. Foram observados valores de 1,8% de linfócitos ativos nos indivíduos normais e 3,2% nos candidatos ao transplante cardíaco. Dos 63 testes realizados nos transplantados cardíacos, quatro deles se mostraram positivos, onde três desses tratavam-se de casos de infecção e um confirmado como processo de rejeição aguda em evolução. O tempo médio necessário para a realização da CIM foi de aproximadamente duas horas. A técnica utiliza mostrou-se valiosa no reconhecimento imunológico dos pacientes transplantados cardíacos, pela sua sensibilidade diagnostica, baixo custo e rapidez.
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Article receive on Monday, January 22, 1990

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