دورية أكاديمية

Analysis of platelet eluate for the elucidation of sensitization to HLA in kidney transplant candidate.

التفاصيل البيبلوغرافية
العنوان: Analysis of platelet eluate for the elucidation of sensitization to HLA in kidney transplant candidate.
Alternate Title: Análise do eluato de plaqueta para a elucidação da sensibilização ao HLA em um candidato ao transplante de rim. (Portuguese)
المؤلفون: Mundim, Hugo Mendonça, Lins, Maria Aparecida Caixeta, Guzmán, Eridane Botelho, Titan, Heline Leal, Saito, Patricia Keiko, Borelli, Sueli Donizete
المصدر: Acta Scientiarum: Health Sciences; Jul-Dec2015, Vol. 37 Issue 2, p175-179, 5p
Abstract (English): While a 42-year-old male patient was being prepared for deceased-donor renal transplantation, anti-HLA-A2 antibodies were detected in the serum by enzyme-linked immunosorbent assay (ELISA) method. The patient denied any transfusion history and previous transplant. Crossmatch by complement dependent cytotoxicity (CDC) and CDC with anti-human globulin (CDC-AHG) proved negative with a four-cell panel with positive typing for HLA-A2. Adsorption of antibodies with platelets and analysis of eluate were suggested to elucidate discrepancies in results by ELISA and by CDC-AHG. ELISA showed that adsorbed serum with platelets did not reveal antibodies for HLA-A2 specificity and suggested that they were removed by their specific binding with HLA-A2 antigens on the platelet surface. Eluate analysis by ELISA showed antibodies for HLA-A2 specificity. No antibodies for HLA-A2 specificity in the non-adsorbed serum were detected by CDC-AHG method. Revision of patient's data showed that a previous transfusion had occurred, which may have been the source of HLA sensitization. The suggested method may be a contribution towards the evaluation of sensitivity between CDC-AHG and ELISA methods for characterizing antibodies in the patient's serum. [ABSTRACT FROM AUTHOR]
Abstract (Portuguese): Enquanto um paciente do sexo masculino de 42 anos de idade estava sendo preparado para o transplante renal de doador falecido, anticorpos anti-HLA-A2 foram detectados no soro pelo método de ensaio imunoenzimático (ELISA). O paciente negava história de transfusão e transplante anterior. Prova-cruzada por citotoxicidade dependente de complemento (CDC) e CDC com antiglobulina humana (CDC-AGH) foram negativos com um painel de quatro células com tipagem positiva para HLA-A2. O método de adsorção de anticorpos com plaquetas e análise do eluato foi sugerido para explicar as discrepâncias dos resultados de ELISA e CDC-AGH. O método de ELISA mostrou que o soro adsorvido com plaquetas não revelou anticorpos para especificidade HLA-A2, sugerindo que eles foram removidos por meio de sua ligação específica com os antígenos HLA-A2 na superfície das plaquetas. A análise do eluato por ELISA mostrou anticorpos para especificidade HLAA2. Nenhum anticorpo para especificidade HLA-A2 foi detectada no soro não adsorvido pelo método de CDCAGH. Revisão dos dados do paciente mostrou que houve transfusão anterior, podendo ter sido a fonte de sensibilização HLA. O método sugerido é uma contribuição para avaliação da sensibilidade entre os métodos de CDC-AGH e ELISA em caracterizar anticorpos no soro do paciente. [ABSTRACT FROM AUTHOR]
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قاعدة البيانات: Complementary Index
الوصف
تدمد:16799291
DOI:10.4025/actascihealthsci.v37i2.22127