ArticleCurrent issues in molecular biology2026
Aryl Hydrocarbon Receptor (AhR) and Vascular Endothelial Growth Factor (VEGF) Crosstalk in Doxorubicin Nephrotoxicity: Mechanisms and Therapeutic Perspectives.
Article in Current issues in molecular biology, 2026. 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
Doxorubicin (DOX), a widely used chemotherapeutic, is constrained by its nephrotoxicity, characterized by endothelial injury, inflammation, and oxidative stress. Vascular endothelial growth factor (VEGF) signaling in the kidney serves a dual function. Under normal conditions, it supports the survival of glomerular endothelial cells and maintains vascular stability, but when excessively activated, it disrupts angiogenesis and contributes to kidney injury. In this context, we hypothesize that Nanocurcumin (CUR-NP), a nano-formulated curcumin derivative with enhanced bioavailability, can modulate the VEGF pathway and restore regular renal activity. Thus, this study aims to explore the potential protective effect of CUR-NP on DOX-induced renal injury in male rats. Thirty-two Wistar albino rats were used and distributed into four groups. CUR-NP (80 mg/kg dissolved in 1% CMC) was administered by oral gavage for two weeks. A single dose of DOX (15 mg/kg) (i.p.) was injected on day seven of the study. Results showed that DOX increased the circulating creatinine, urea, and urea-nitrogen levels, while pretreatment with CUR-NP markedly alleviated kidney function. In addition, CUR-NP treatment significantly normalized oxidative stress markers in renal tissues, such as NO, GSH, and SOD, and improved renal pro-inflammatory mediators, TNF-α, IL-6, and NF-κB-p65. DOX caused degeneration of glomeruli and tubules with degenerated epithelial lining and casts in their lumens. Conversely, CUR-NP maintained standard tubular and glomerular structure. Immunohistochemistry showed that DOX strongly upregulated VEGF and AhR, while CUR-NP markedly reduced their expression, countering VEGF/AhR pathway disruption and helping restore physiological signaling.
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