Podocyturia: A Clue for the Rational Use of Amiloride in Alport Renal Disease

No specific or efficient treatment exists for Alport syndrome, an X-linked hereditary disease caused by mutations in collagen type IV, a crucial component of the glomerular basement membrane. Kidney failure is usually a major complication of the disease, and patients require renal replacement therap...

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Main Authors: H. Trimarchi, R. Canzonieri, A. Muryan, A. Schiel, A. Araoz, M. Paulero, J. Andrews, T. Rengel, M. Forrester, F. Lombi, V. Pomeranz, R. Iriarte, E. Zotta
Format: Article
Language:English
Published: Wiley 2016-01-01
Series:Case Reports in Nephrology
Online Access:http://dx.doi.org/10.1155/2016/1492743
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author H. Trimarchi
R. Canzonieri
A. Muryan
A. Schiel
A. Araoz
M. Paulero
J. Andrews
T. Rengel
M. Forrester
F. Lombi
V. Pomeranz
R. Iriarte
E. Zotta
author_facet H. Trimarchi
R. Canzonieri
A. Muryan
A. Schiel
A. Araoz
M. Paulero
J. Andrews
T. Rengel
M. Forrester
F. Lombi
V. Pomeranz
R. Iriarte
E. Zotta
author_sort H. Trimarchi
collection DOAJ
description No specific or efficient treatment exists for Alport syndrome, an X-linked hereditary disease caused by mutations in collagen type IV, a crucial component of the glomerular basement membrane. Kidney failure is usually a major complication of the disease, and patients require renal replacement therapy early in life. Microhematuria and subsequently proteinuria are hallmarks of kidney involvement, which are due to primary basement membrane alterations that mainly cause endothelial thrombosis and podocyte contraction and ulterior irreversible detachment. Commonly drug-based approaches include angiotensin-converting enzyme inhibitors and angiotensin receptor blockers, which are employed to reduce proteinuria and thus retard kidney disease progression and cardiovascular morbidity and mortality. However, as any hereditary disease, it is expressed as early as in the intrauterine life, and usually an index case is helpful to detect family-related cases. As no specific treatment exists, pathophysiologically based approaches are useful. The present case illustrates the reduction rate of urinary podocyte loss and proteinuria after amiloride administration and suggests the molecular pathways involved in Alport renal disease. Finally, podocyturia rather than proteinuria should be considered as an earlier biomarker of kidney involvement and disease progression in Alport disease.
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issn 2090-6641
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publishDate 2016-01-01
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series Case Reports in Nephrology
spelling doaj-art-b261dba720d14a14ba017a152ca832422025-02-03T01:00:48ZengWileyCase Reports in Nephrology2090-66412090-665X2016-01-01201610.1155/2016/14927431492743Podocyturia: A Clue for the Rational Use of Amiloride in Alport Renal DiseaseH. Trimarchi0R. Canzonieri1A. Muryan2A. Schiel3A. Araoz4M. Paulero5J. Andrews6T. Rengel7M. Forrester8F. Lombi9V. Pomeranz10R. Iriarte11E. Zotta12Nephrology Service, Hospital Britanico de Buenos Aires, Perdriel 74, 1280 Buenos Aires, ArgentinaLaboratory Service, Hospital Britanico de Buenos Aires, Perdriel 74, 1280 Buenos Aires, ArgentinaLaboratory Service, Hospital Britanico de Buenos Aires, Perdriel 74, 1280 Buenos Aires, ArgentinaLaboratory Service, Hospital Britanico de Buenos Aires, Perdriel 74, 1280 Buenos Aires, ArgentinaIFIBIO Houssay, UBA CONICET, Facultad de Medicina, Universidad de Buenos Aires, Paraguay 2155, 1425 Buenos Aires, ArgentinaNephrology Service, Hospital Britanico de Buenos Aires, Perdriel 74, 1280 Buenos Aires, ArgentinaNephrology Service, Hospital Britanico de Buenos Aires, Perdriel 74, 1280 Buenos Aires, ArgentinaNephrology Service, Hospital Britanico de Buenos Aires, Perdriel 74, 1280 Buenos Aires, ArgentinaNephrology Service, Hospital Britanico de Buenos Aires, Perdriel 74, 1280 Buenos Aires, ArgentinaNephrology Service, Hospital Britanico de Buenos Aires, Perdriel 74, 1280 Buenos Aires, ArgentinaNephrology Service, Hospital Britanico de Buenos Aires, Perdriel 74, 1280 Buenos Aires, ArgentinaNephrology Service, Hospital Britanico de Buenos Aires, Perdriel 74, 1280 Buenos Aires, ArgentinaIFIBIO Houssay, UBA CONICET, Facultad de Medicina, Universidad de Buenos Aires, Paraguay 2155, 1425 Buenos Aires, ArgentinaNo specific or efficient treatment exists for Alport syndrome, an X-linked hereditary disease caused by mutations in collagen type IV, a crucial component of the glomerular basement membrane. Kidney failure is usually a major complication of the disease, and patients require renal replacement therapy early in life. Microhematuria and subsequently proteinuria are hallmarks of kidney involvement, which are due to primary basement membrane alterations that mainly cause endothelial thrombosis and podocyte contraction and ulterior irreversible detachment. Commonly drug-based approaches include angiotensin-converting enzyme inhibitors and angiotensin receptor blockers, which are employed to reduce proteinuria and thus retard kidney disease progression and cardiovascular morbidity and mortality. However, as any hereditary disease, it is expressed as early as in the intrauterine life, and usually an index case is helpful to detect family-related cases. As no specific treatment exists, pathophysiologically based approaches are useful. The present case illustrates the reduction rate of urinary podocyte loss and proteinuria after amiloride administration and suggests the molecular pathways involved in Alport renal disease. Finally, podocyturia rather than proteinuria should be considered as an earlier biomarker of kidney involvement and disease progression in Alport disease.http://dx.doi.org/10.1155/2016/1492743
spellingShingle H. Trimarchi
R. Canzonieri
A. Muryan
A. Schiel
A. Araoz
M. Paulero
J. Andrews
T. Rengel
M. Forrester
F. Lombi
V. Pomeranz
R. Iriarte
E. Zotta
Podocyturia: A Clue for the Rational Use of Amiloride in Alport Renal Disease
Case Reports in Nephrology
title Podocyturia: A Clue for the Rational Use of Amiloride in Alport Renal Disease
title_full Podocyturia: A Clue for the Rational Use of Amiloride in Alport Renal Disease
title_fullStr Podocyturia: A Clue for the Rational Use of Amiloride in Alport Renal Disease
title_full_unstemmed Podocyturia: A Clue for the Rational Use of Amiloride in Alport Renal Disease
title_short Podocyturia: A Clue for the Rational Use of Amiloride in Alport Renal Disease
title_sort podocyturia a clue for the rational use of amiloride in alport renal disease
url http://dx.doi.org/10.1155/2016/1492743
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