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A nationwide blood spot screening study for Fabry disease in the Czech Republic haemodialysis patient population
Merta M., Reiterova J., Ledvinova J., Poupetová H., Dobrovolny R., Rysavá R., Maixnerová D., Bultas J., Motán J., Slivkova J., Sobotova D., Smrzova J., Tesar V.
Jazyk angličtina Země Velká Británie
E-zdroje NLK Online
Free Medical Journals od 1996 do Před 1 rokemOpen Access Digital Library od 1996-01-01
- MeSH
- alfa-galaktosidasa chemie MeSH
- dialýza ledvin metody MeSH
- dospělí MeSH
- enzymy terapeutické užití MeSH
- Fabryho nemoc diagnóza krev terapie MeSH
- financování organizované MeSH
- fluorescenční spektrometrie MeSH
- konformace proteinů MeSH
- lidé středního věku MeSH
- lidé MeSH
- lyzozomy metabolismus MeSH
- rodokmen MeSH
- senioři MeSH
- Check Tag
- dospělí MeSH
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Geografické názvy
- Česká republika MeSH
BACKGROUND: Fabry disease (FD) is a genetic disorder characterized by accumulation of trihexosylceramide in lysosomes of various tissues leading to multiorgan manifestations, including progressive renal disease. Previous screening studies have shown that a non-neglectable proportion of haemodialysis(HD) patients have unsuspected FD. An extensive FD screening study, the largest to date, has been conducted in HD patients in Czech Republic. We aimed to uncover previously undiagnosed FD patients, to enable them to benefit from cause-specific therapeutic intervention with enzyme replacement therapy (ERT). METHODS: Large-scale screening was executed using a convenient automated enzymatic (alpha-galactosidose A, alpha-Gal A) dried blood spot on filter paper fluorescence method. RESULTS: In total, 3370 (45.1% males, 54.9% females) out of 4058 HD patients (83%) in Czech Republic participated in this blood spot screening (BSS) study. Abnormal low fluorescence readings were obtained in 117 patients (3.5%). Subsequent determination of plasma alpha-Gal A activity identified four males and three females with deficient plasma enzyme activity. Determination of alpha-Gal A activity in peripheral blood leucocytes and confirmatory molecular analysis resulted in four newly diagnosed Fabry males and one female. Subsequent family screening identified 10 family members with genotypically proven FD. Based on these screening results, ERT could be offered to five male FD patients. CONCLUSIONS: BSS represents a promising screening tool that has proven to be convenient and effective in uncovering unrecognized FD patients among the chronic HD population in Czech Republic.
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- $a Department of Nephrology, 1st Medical Faculty of Charles University and General Faculty Hospital, Prague, Czech Republic. merta@cesnet.cz
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- $a BACKGROUND: Fabry disease (FD) is a genetic disorder characterized by accumulation of trihexosylceramide in lysosomes of various tissues leading to multiorgan manifestations, including progressive renal disease. Previous screening studies have shown that a non-neglectable proportion of haemodialysis(HD) patients have unsuspected FD. An extensive FD screening study, the largest to date, has been conducted in HD patients in Czech Republic. We aimed to uncover previously undiagnosed FD patients, to enable them to benefit from cause-specific therapeutic intervention with enzyme replacement therapy (ERT). METHODS: Large-scale screening was executed using a convenient automated enzymatic (alpha-galactosidose A, alpha-Gal A) dried blood spot on filter paper fluorescence method. RESULTS: In total, 3370 (45.1% males, 54.9% females) out of 4058 HD patients (83%) in Czech Republic participated in this blood spot screening (BSS) study. Abnormal low fluorescence readings were obtained in 117 patients (3.5%). Subsequent determination of plasma alpha-Gal A activity identified four males and three females with deficient plasma enzyme activity. Determination of alpha-Gal A activity in peripheral blood leucocytes and confirmatory molecular analysis resulted in four newly diagnosed Fabry males and one female. Subsequent family screening identified 10 family members with genotypically proven FD. Based on these screening results, ERT could be offered to five male FD patients. CONCLUSIONS: BSS represents a promising screening tool that has proven to be convenient and effective in uncovering unrecognized FD patients among the chronic HD population in Czech Republic.
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