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  • Title: Renin-angiotensin system polymorphisms: a risk factor for progression to end-stage renal disease in vesicoureteral reflux patients.
    Author: Akman B, Tarhan C, Arat Z, Sezer S, Ozdemir FN.
    Journal: Ren Fail; 2009; 31(3):196-200. PubMed ID: 19288324.
    Abstract:
    Aim. Renin-angiotensin system (RAS) gene mutations have been implicated as a risk factor for the presence and progression of renal disease in vesicoureteral reflux (VUR). However, the results are contradictory, and the effects of RAS polymorphisms in VUR patients with end-stage renal disease (ESRD) have not been defined yet. This study was designed to evaluate the angiotensin-converting enzyme insertion/deletion (ACE-I/D), angiotensinogen (AGT) M235T, and angiotensin II receptor type 1 (ATR1) A1166C and type 2 (ATR2) C3123A gene polymorphisms as risk factors for progression to ESRD in patients with VUR. Methods. ACE-I/D, AGT-M235T, ATR1-A1166C, and ATR2-C3123A were identified in 161 ESRD patients (52 female, 109 male; 77 renal transplant, 84 dialysis; age: 34.4 +/- 11.2 years). VUR was the ESRD etiology in 40 patients. Genetic polymorphisms of the ACE gene I/D, AGT gene M235T, ATR1 gene A1166C, and ATR2 gene C3123A were identified in all of the patients. Results. We detected no linkage between genetic polymorphisms of ATR1-, ATR2-, AGT-, and VUR-related ESRD. When ACE gene was considered, VUR(+) patients had 63.6% DD, 36.4% ID, and no II alleles, whereas VUR(-) patients had 48.6% DD, 43.2% ID, and 8.1% II alleles. Conclusion. A striking feature of VUR-related ESRD patients was the absence of II alleles, so the DD genotype may be accepted as a genetic susceptibility factor for progression to ESRD in VUR patients.
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