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Passámos em revista, com o estudo da curva normal de electroforese e do modo de representação dos resultados, as principais alterações com interesse diagnóstico e prognóstico. Não queremos terminar sem insistir na ausência de especificidade dos resultados. Com efeito, para além de alguns raros casos de curvas típicas (certos plasmocitomas, por exemplo), a electroforese não fornece, só por si, um diagnóstico definitivo. É necessária a integração criteriosa dos resultados fornecidos por esta técnica no conjunto dos dados clínicos e laboratoriais que seja possível colher em cada caso. Mas, no plano geral do estudo clínico e laboratorial de grande número de quadros patológicos cabe à electroforese um papel do maior valor, quer na investigação quer na prática diária, quando os seus resultados sejam obtidos por técnica rigorosa e interpretados com são critério clínico. Pela sua mesma simplicidade técnica e facilidade aparente na obtenção dos resultados, a electroforese das proteínas em papel de filtro obriga a um rigor de técnica e cuidado de interpretação sem os quais os resultados obtidos devem considerar-se como destituídos de significado, pela possibilidade de erros grandes na sua apreciação quantitativa, a que aludimos no primeiro trabalho desta série. Porém, nas mãos de técnicos bem treinados na execução e interpretação, a electroforese não oferece dificuldades e pode considerar-se indispensável, hoje, ao conhecimento concreto da maioria das situações clínicas. Se este trabalho puder ser de utilidade a alguns colegas, por vir a facilitar-lhes o recurso a tão útil técnica, teremos atingido, por completo, o fim que tivemos em vista ao escrevê-lo.
We reviewed the main changes of diagnostic and prognostic interest, studying the normal electrophoresis curve and how the results are represented. We do not want to conclude without emphasizing the lack of specificity of the results. In fact, apart from a few rare cases of typical curves (certain plasmacytomas, for example), electrophoresis alone does not provide a definitive diagnosis. It is necessary to carefully integrate the results provided by this technique with all the clinical and laboratory data that can be collected in each case. However, in the general context of the clinical and laboratory study of a large number of pathological conditions, electrophoresis plays a very valuable role, both in research and in daily practice, when its results are obtained using rigorous techniques and interpreted with sound clinical judgment. Due to its technical simplicity and apparent ease in obtaining results, protein electrophoresis on filter paper requires technical rigor and careful interpretation, without which the results obtained should be considered meaningless, due to the possibility of large errors in their quantitative assessment, as mentioned in the first paper in this series. However, in the hands of technicians who are well trained in its execution and interpretation, electrophoresis presents no difficulties and can be considered indispensable today for a concrete understanding of most clinical situations. If this paper can be of use to some colleagues by facilitating their use of this useful technique, we will have fully achieved the goal we had in mind when writing it.
We reviewed the main changes of diagnostic and prognostic interest, studying the normal electrophoresis curve and how the results are represented. We do not want to conclude without emphasizing the lack of specificity of the results. In fact, apart from a few rare cases of typical curves (certain plasmacytomas, for example), electrophoresis alone does not provide a definitive diagnosis. It is necessary to carefully integrate the results provided by this technique with all the clinical and laboratory data that can be collected in each case. However, in the general context of the clinical and laboratory study of a large number of pathological conditions, electrophoresis plays a very valuable role, both in research and in daily practice, when its results are obtained using rigorous techniques and interpreted with sound clinical judgment. Due to its technical simplicity and apparent ease in obtaining results, protein electrophoresis on filter paper requires technical rigor and careful interpretation, without which the results obtained should be considered meaningless, due to the possibility of large errors in their quantitative assessment, as mentioned in the first paper in this series. However, in the hands of technicians who are well trained in its execution and interpretation, electrophoresis presents no difficulties and can be considered indispensable today for a concrete understanding of most clinical situations. If this paper can be of use to some colleagues by facilitating their use of this useful technique, we will have fully achieved the goal we had in mind when writing it.
Descrição
Palavras-chave
Imunodiagnóstico Biologia molecular Análises clínicas
Contexto Educativo
Citação
Editora
Instituto de Medicina Tropical
