Cystatin C as a marker of early changes of renal function in Fabry nephropathy. 2007

Sandro Feriozzi, and Dominique P Germain, and Raffaele Di Vito, and Alain Legrand, and Roberta Ricci, and Frédéric Barbey
Nephrology and Dialysis Unit, Ospedale Belcolle, Viterbo, Italy. sandro.feriozzi@tiscali.it

BACKGROUND A sensitive, feasible and reproducible marker for renal function is necessary to evaluate the clinical efficacy of enzyme replacement therapy (ERT) in Fabry nephropathy. Serum creatinine has some limitations and cystatin C has been proposed, in other nephropathies, as a useful marker of renal function. The use of cystatin C as a marker of glomerular filtration rate (GFR) was investigated in Fabry patients receiving ERT. METHODS Renal function was evaluated with serum creatinine, serum cystatin C and estimated GFR (through Modification of Diet in Renal Disease [MDRD], Cockcroft-Gault [C&G] and Hoek formulae) in 21 Fabry patients receiving ERT with agalsidase alfa for 3 years and in 13 Fabry patients receiving agalsidase alfa for 4 years. RESULTS During years of ERT while serum creatinine remained stable, cystatin C values showed a significant, increasing trend right from the first year of ERT. CONCLUSIONS In Fabry disease, cystatin C is a sensitive and reliable marker of renal function, and it should be taken into account when evaluating GFR trends during ERT.

UI MeSH Term Description Entries
D007674 Kidney Diseases Pathological processes of the KIDNEY or its component tissues. Disease, Kidney,Diseases, Kidney,Kidney Disease
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D003404 Creatinine Creatinine Sulfate Salt,Krebiozen,Salt, Creatinine Sulfate,Sulfate Salt, Creatinine
D005260 Female Females
D005919 Glomerular Filtration Rate The volume of water filtered out of plasma through glomerular capillary walls into Bowman's capsules per unit of time. It is considered to be equivalent to INULIN clearance. Filtration Rate, Glomerular,Filtration Rates, Glomerular,Glomerular Filtration Rates,Rate, Glomerular Filtration,Rates, Glomerular Filtration
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D000368 Aged A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available. Elderly
D000519 alpha-Galactosidase An enzyme that catalyzes the hydrolysis of terminal, non-reducing alpha-D-galactose residues in alpha-galactosides including galactose oligosaccharides, galactomannans, and galactolipids. Beano,Melibiase,alpha-D-Galactopyranosidase,alpha-D-Galactosidase,alpha-Galactisidase,alpha-Galactosidase A,alpha-Galactosidases,alpha D Galactopyranosidase,alpha D Galactosidase,alpha Galactisidase,alpha Galactosidase,alpha Galactosidase A,alpha Galactosidases

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