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Published on: June 28, 2024
Effect of glutathione depletion on Ifosfamide nephrotoxicity in rats
Sudha Garimella-Krovi1, James E Springate
1Department of Pediatrics, School of Medicine and Biomedical Sciences, State University of New York at Buffalo, USA.
Abstract:
Kidney injury is an important side effect of the chemotherapeutic agent ifosfamide in humans. Previous studies have shown that treatment with ifosfamide reduces kidney glutathione and that the toxicity of ifosfamide is enhanced in glutathione-depleted renal tubule cells in vitro. In this study, we examined the effect of glutathione depletion on ifosfamide nephrotoxicity in vivo using rats treated with the glutathione-depleting agent buthionine sulfoximine. Animals received 80 mg/kg ifosfamide intraperitoneally daily for three days with or without buthionine sulfoximine in drinking water. Buthionine sulfoximine produced a significant fall in renal glutathione content but did not affect kidney function. Ifosfamide-treated rats developed low-grade glucosuria, phosphaturia and proteinuria that worsened with concomitant buthionine sulfoximine therapy. These findings indicate that glutathione depletion exacerbates ifosfamide nephrotoxicity in rats and suggest that pharmacological methods for replenishing intracellular glutathione may be effective in ameliorating ifosfamide-induced renal injury.
Insights
Glutathione depletion worsens ifosfamide kidney injury in rats. Replenishing glutathione may protect against this chemotherapy side effect, suggesting new therapeutic strategies for cancer patients.
Area of Science:
- Nephrology
- Oncology
- Biochemistry
Background:
- Ifosfamide is a chemotherapy drug that can cause kidney injury.
- Ifosfamide reduces kidney glutathione levels.
- Glutathione depletion enhances ifosfamide toxicity in kidney cells.
Purpose of the Study:
- To investigate the effect of glutathione depletion on ifosfamide-induced kidney injury in vivo.
- To determine if buthionine sulfoximine exacerbates ifosfamide nephrotoxicity in rats.
Main Methods:
- Rats were treated with ifosfamide and buthionine sulfoximine.
- Renal glutathione levels and kidney function markers were assessed.
- Glucosuria, phosphaturia, and proteinuria were measured.
Main Results:
- Buthionine sulfoximine significantly reduced renal glutathione content.
- Ifosfamide caused mild kidney damage (glucosuria, phosphaturia, proteinuria).
- Concomitant buthionine sulfoximine therapy worsened ifosfamide-induced kidney injury.
Conclusions:
- Glutathione depletion exacerbates ifosfamide nephrotoxicity in rats.
- Pharmacological replenishment of glutathione may mitigate ifosfamide-induced renal injury.
- This suggests potential therapeutic approaches to reduce chemotherapy side effects.
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