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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Radiation nephropathy is treatable with an angiotensin converting enzyme inhibitor or an angiotensin II type-1 ( AT1) receptor antagonist.

BACKGROUND AND PURPOSE: Previous studies showed that progression of established radiation nephropathy could be delayed by continuous treatment with high doses of captopril, an angiotensin-converting-enzyme (ACE) inhibitor. The current studies were designed to determine whether a lower dose or a shorter treatment with captopril would be effective and whether an angiotensin II type-1 ( AT1) receptor antagonist (AII blocker) would be effective. MATERIALS AND METHODS: In the captopril studies, rats were given renal irradiation at doses sufficient to produce radiation nephropathy. Six months after irradiation, animals were stratified by azotemia and assigned to no treatment, continuous high- or low-dose captopril, or 6 weeks of high-dose captopril. Captopril was given in drinking water at 62.5 mg/l (low dose) or 500 mg/l (high dose). The AII blocker study had a similar design, except that the nephropathy was the result of total body irradiation and bone marrow transplantation and the treatments were no treatment or continuous treatment with an AII blocker, L-158,809 (20 mg/l in drinking water). Animals were followed for 1 year with periodic studies of renal function. RESULTS: Survival and renal function were significantly enhanced by all treatments. Continuous captopril treatment was more effective than the 6-week course of treatment, but there was no difference in effectiveness between the high and low doses of captopril. In continuous therapy, captopril and the AII blocker had roughly equivalent efficacy. CONCLUSIONS: Both the ACE inhibitor and the AII blocker were effective treatments for established radiation nephropathy. The best results with the ACE inhibitor required continuous therapy, but could be achieved with a low dose of the drug.[1]


  1. Radiation nephropathy is treatable with an angiotensin converting enzyme inhibitor or an angiotensin II type-1 (AT1) receptor antagonist. Moulder, J.E., Fish, B.L., Cohen, E.P. Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology. (1998) [Pubmed]
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