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Avaliação do crossmatch por citometria de fluxo

Authors: Marques, Daniela Portugal;

Avaliação do crossmatch por citometria de fluxo

Abstract

O estágio realizou-se no serviço de transplantação do Centro de Sangue e Transplantação de Coimbra, que permitiu adquirir competências a nível das provas de crossmatch. O crossmatch anti-linfocitário consiste no ensaio padrão utilizado na área da transplantação que permite avaliar a compatibilidade HLA entre um dador e um recetor, prevenindo a rejeição do aloenxerto mediada por anticorpos. A metodologia atual fornece informações sobre o risco da realização de um transplante, melhorando as taxas de aceitação do enxerto alogénico. No entanto, existem limitações na distinção de padrões de reatividade durante o processo de crossmatch por citometria de fluxo, considerando ligações não específicas que conduzem a resultados inexactos que impedem consequentemente o transplante. Desta forma, com os aanços no campo da imuno-histocompatibilidade, têm sido induzidas atualizações no procedimento das provas cruzadas, como o Halifaxe e Halifaster, que possibilitam melhorar os resultados obtidos. Para este projeto foram propostos métodos adaptados ao serviço, com o objetivo de comparar a sensibilidade e especificidade entre os protocolos de crossmatch e investigar a significância clínica na compatibilidade linfocitária entre dadores e recetores. A análise dos casos estudados revelou melhorias na utilização do protocolo Halifax estipulado comparando com o Standard para as classes HLA, especialmente para a classe II.

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Portugal
Related Organizations
Keywords

Otimização de ensaios, Antigénio leucocitário humano, Anticorpos específicos contra o dador, Crossmatch, Citometria de fluxo

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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