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Obstructive uropathies caused by congenital malformations of the urinary tract are relatively frequent in newborn. These obstructive lesions are the main cause for renal disease in infancy. Most of these uropathies are treated by surgical interventions restoring the drainage function of the urinary tract. Clinically these patients are cured but the question remains wether these patients will develop renal disease in adult life, since it has been recently shown in animal models that transient, neonatal and prenatal, ureteral obstruction induces significant renal deterioration later in life. Except for angiotensin converting enzyme inhibitors that slow down the progression of renal disease, no specific drugs reducing renal fibrosis exist. Animal models of ureteral obstruction have allowed to clearly identify the events leading to tubulointerstitial fibrosis. Furthermore, more recently, the use of ureteral obstruction in genetically engineered animals has shown pro- and anti-fibrotic properties of a large number of molecules. These studies using genetically engineered animals have suggested several new future promising therapeutic directions to treat renal fibrosis. |
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