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Updated: Aug 7, 2026
06:38
Early Detection of Drug-Induced Renal Hemodynamic Dysfunction Using Sonographic Technology in Rats
Published on: March 11, 2016
Captopril preserves function and ultrastructure in experimental radiation nephropathy
Laboratory Investigation; a Journal of Technical Methods and Pathology
|September 1, 1996
Summary
Captopril significantly reduces structural and functional damage in rat kidneys after radiation therapy. This preventive treatment lowers blood pressure, azotemia, and fibrosis, improving survival rates in radiation nephropathy models.
Area of Science:
- Nephrology
- Radiation Oncology
- Pharmacology
Background:
- Radiation therapy can cause significant kidney damage, leading to nephropathy, fibrosis, and reduced function.
- Captopril has previously shown protective effects against radiation-induced lung injury.
Purpose of the Study:
- To determine the structural benefits of preventive captopril administration in radiation-induced nephropathy.
- To evaluate captopril's dose-dependent effects on renal structural and functional outcomes post-irradiation.
Main Methods:
- Wag/RijMCW rats received total body irradiation and bone marrow transplant.
- Captopril was administered at varying doses (0-500 mg/l) in drinking water from irradiation time.
- Kidney tissues were analyzed at 20 weeks using light and electron microscopy; blood pressure and azotemia were monitored.
Main Results:
- Irradiated rats without captopril showed severe glomerular, tubular, vascular, and interstitial damage, including fibrosis and arterial thickening.
- Captopril treatment significantly reduced all measured forms of renal injury in a dose-dependent manner.
- Captopril also lowered blood pressure and azotemia, and increased survival rates in irradiated rats.
Conclusions:
- Captopril provides significant functional and structural protection against radiation-induced renal injury.
- Preventive captopril administration effectively reduces radiation-induced fibrosis in the kidneys.
- The findings support captopril as a potential therapeutic agent to mitigate radiation nephropathy.
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