ArticleBiological research2025
Effect of sodium thiosulfate on preventing renal ischemia-reperfusion injury in high-fat diet-fed rats: the role of renal mitochondrial quality.
Article in Biological research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectiveSodium Thiosulfate (STS), a clinically approved agent for cyanide poisoning and vascular calcification, possesses antioxidant, anti-inflammatory, mitochondrial preservation, and metal chelation capabilities, rendering it a promising candidate for managing ischemia-reperfusion (IR) injury. The detrimental impact of high-fat diets (HD) on the outcomes of IR during renal surgeries is well-documented. However, the potential of STS to ameliorate renal IR injury in rat fed with high fat diet is not known.
methodsMale Wistar rats were fed a standard diet (SD) or a high-fat diet (HD) for 16 weeks before undergoing an IR protocol (45 min of ischemia followed by 24 h of reperfusion). STS (10 mg/kg) was administered 30 min before IR.
resultsSTS effectively mitigated IR-induced physiological decline and tissue damage in SD rats but was less effective in HD rats. To explore this difference, we measured renal mitochondrial quality. STS improved mitochondrial bioenergetics, balanced mitochondrial dynamics, and increased mitochondrial copy number in SD-IR rats more than in HD-IR rats. Additionally, STS significantly reduced oxidative stress and upregulated Pgc-1α, Polg, and Tfam genes in SD-IR rats but had a lesser effect in HD-IR rats. The 16-week HD significantly reduced renal mitochondrial quality at the basal level, hindering STS-mediated protection.
conclusionThese findings highlight the efficacy of STS in managing renal IR and emphasize the need for nutritional support to restore mitochondrial function in high-fat diet subjects.
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