Jornal brasileiro de nefrologia · 2018
CD77 levels over enzyme replacement treatment in Fabry Disease Family (V269M).
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Pereira Ester Miranda, Silva Adalberto Socorro da, Silva Raimundo Nonato da, Monte Neto José Tiburcio, Nascimento Fernando F do, Sousa Jackeline L M, Costa Filho Henrique César Saraiva de Arêa Leão, Sales Filho Herton Luiz Alves, Labilloy Anatalia, Monte Semiramis Jamil Hadad do
Аннотация
INTRODUCTION: Fabry disease (FD) is a disorder caused by mutations in the gene encoding for lysosomal enzyme α-galactosidase A (α-GAL). Reduced α-GAL activity leads to progressive accumulation of globotriaosylceramide (Gb3), also known as CD77. The recent report of increased expression of CD77 in blood cells of patients with FD indicated that this molecule can be used as a potential marker for monitoring enzyme replacement therapy (ERT).
OBJECTIVE: The purpose of this study was to evaluate the CD77 levels throughout ERT in FD patients (V269M mutation).
METHODS: We evaluated the fluctuations in PBMC (peripheral blood mononuclear cell) membrane CD77 expression in FD patients undergoing ERT and correlated these levels with those observed in different cell types.
RESULTS: A greater CD77 expression was found in phagocytes of patients compared to controls at baseline. Interestingly, the variability in CD77 levels is larger in patients at baseline (340 - 1619 MIF) and after 12 months of ERT (240 - 530 MIF) compared with the control group (131 - 331 MFI). Furthermore, by analyzing the levels of CD77 in phagocytes from patients throughout ERT, we found a constant decrease in CD77 levels.
CONCLUSION: The increased CD77 levels in the phagocytes of Fabry carriers together with the decrease in CD77 levels throughout ERT suggest that measuring CD77 levels in phagocytes is a promising tool for monitoring the response to ERT in FD.
OBJECTIVE: The purpose of this study was to evaluate the CD77 levels throughout ERT in FD patients (V269M mutation).
METHODS: We evaluated the fluctuations in PBMC (peripheral blood mononuclear cell) membrane CD77 expression in FD patients undergoing ERT and correlated these levels with those observed in different cell types.
RESULTS: A greater CD77 expression was found in phagocytes of patients compared to controls at baseline. Interestingly, the variability in CD77 levels is larger in patients at baseline (340 - 1619 MIF) and after 12 months of ERT (240 - 530 MIF) compared with the control group (131 - 331 MFI). Furthermore, by analyzing the levels of CD77 in phagocytes from patients throughout ERT, we found a constant decrease in CD77 levels.
CONCLUSION: The increased CD77 levels in the phagocytes of Fabry carriers together with the decrease in CD77 levels throughout ERT suggest that measuring CD77 levels in phagocytes is a promising tool for monitoring the response to ERT in FD.