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1,25-Dihydroxyvitamin D3 mitigates high glucose-induced oxidative stress, inflammation, and extracellular matrix accumulation in glomerular mesangial cells via the ROS/TXNIP/NLRP3 pathway

Qingyue Meng, Bo Chen, Chunjiang Zhang, Lin Jia, Xingyu Yao
Speculation
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Editor's note
Vitamin D may help prevent kidney scarring in diabetes by dampening an inflammatory cascade triggered by high blood sugar—a finding that mechanistically connects metabolic stress to tissue destruction through a well-characterized inflammasome pathway. This remains preliminary in-vitro work lacking human validation, but it aligns with growing evidence that NLRP3 inflammasome inhibition could address multiple chronic inflammatory diseases. Nephrologists and metabolic endocrinologists should monitor whether these results translate to clinical trials.

Source: openalex · Origin: CN · Qingyue Meng, Bo Chen, Chunjiang Zhang, Lin Jia, Xingyu Yao · PubMed · 2026-06-01

URL: https://doi.org/10.14670/hh-25-021

AI rationale (4/5, tier: preliminary): In-vitro mechanistic study directly targeting NLRP3 inflammasome and ROS/TXNIP pathway in metabolic disease context, but lacks human biomarkers or clinical translation.


BACKGROUND: in diabetic nephropathy (DN) progression and its underlying mechanism targeting the ROS/TXNIP/NLRP3 inflammasome pathway. METHODS: (1-50 nM), or high glucose plus N-acetylcysteine (NAC, 10 mM). Cell viability was assessed by the CCK-8 assay. Oxidative stress parameters (ROS via DCFH-DA fluorescence, MDA content, SOD activity) and pyroptosis markers (LDH release, PI/Hoechst 33342 nuclear staining) were quantified. Renal histopathology was performed using PAS and Masson trichrome staining. Biochemical analyses included serum creatinine, urea nitrogen, and 24-h urinary protein quantification. Molecular profiling encompassed ELISA (IL-1β, IL-6, TNF-α, IL-18, fibronectin, collagen IV), RT-qPCR (NOX2, NOX4, NLRP3, ASC), western blotting (TXNIP, NLRP3, ASC, caspase-1, IL-1β, IL-18, collagen IV, fibronectin, laminin), and TXNIP immunofluorescence. RESULTS: suppressed ROS/TXNIP/NLRP3/caspase-1 signaling, ameliorated renal dysfunction, and mitigated histopathological damage in DN rats. CONCLUSION: confers renoprotection in DN by inhibiting the ROS/TXNIP/NLRP3 inflammasome axis, thereby suppressing oxidative stress, inflammatory cytokine production, ECM accumulation, and pyroptotic cell death in glomerular mesangial cells and renal tissues.

Published 2026-05-26 · Last kit-update 2026-05-26