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Bratislava Medical Journal 2023 Bratislava Medical Journal Vol.124, No.2, p.151–157, 2023
Bratislava Medical Journal 2023 Bratislava Medical Journal Vol.124, No.2, p.151–157, 2023
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Bratislava Medical Journal Vol.124, No.2, p.151–157, 2023 |
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| Title: Malate reduced kidney injury molecule (KIM-1) expression and selectively upregulated the renal nitric oxide production in obstructive nephropathy | ||
| Author: Osaze EDOSUYI, Myung CHOI, Vashti EDOSUYI, Ighodaro IGBE, Adebayo OYEKAN | ||
| Abstract: BACKGROUND: Malate, the tricarboxylic acid (TCA) cycle intermediary, upregulates renal nitric oxide (NO) signaling, and NO is renoprotective in nephropathy. OBJECTIVES: This study explored the hypothesis that malate could increase renal NO and decrease renal injury and fibrotic markers in obstructive nephropathy. METHODS: Kidney injury was induced in rats via unilateral surgical ligation of the ureter, there after, rats were treated with malate (600 mg/kg, p.o.) for ten days. Urine was collected on days 0, 4, 7 and 10. Urinary sodium excretion was also determined. Western blot and biochemical analyses were carried on the nephropathic kidneys. RESULTS: Malate reduced kidney injury molecule (KIM-1) expression in the renal cortex and medulla of nephropathic rats (p < 0.05). NO production was selectively increased in the medulla of nephropathic rats treated with malate (58.3 ± 1.3 vs 77.8 ± 4.4 µM/ng, p < 0.05). Superoxide dismutase and catalase activity increased in the kidney of malate-treated nephropathic rats (p < 0.05). Transforming growth factor (TGF-β), an index of fibrosis, increased in the cortex but not medulla of the malate-treated UUO group. There was a consistent increase in collagenase activity in the cortex, and a reduction in the medulla. CONCLUSION: Malate ameliorated the injury and inflammation but selectively reduced fibrosis in obstructive nephropathy (Fig. 6, Ref. 32). Text in PDF www.elis.sk |
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| Keywords: Malate, tricarboxylic acid cycle, nitric oxide, kidney injury molecule (KIM-1), obstructive nephropathy | ||
| Published online: 03-Jan-2023 | ||
| Year: 2023, Volume: 124, Issue: 2 | Page From: 151, Page To: 157 | |
| doi:10.4149/BLL_2023_024 |
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