ArticleAnesthesia and analgesia2024
Bardoxolone Methyl Ameliorates Chemotherapy-Induced Neuropathic Pain by Activation of Phosphorylated Nuclear Factor Erythroid 2-Related Factor 2 in the Dorsal Root Ganglia.
Article in Anesthesia and analgesia, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed, 3 citations in OpenAlex.
- The Analgesic Effects of Nrf2 Activators in Chemotherapy-Induced Neuropathic Pain: Evidence from Animal Studies and Consequences for Translation into Clinical Trials.International journal of molecular sciences · 2026Review
- Oxidative Stress, Inflammation, and Cellular Senescence in Neuropathic Pain: Mechanistic Crosstalk.Antioxidants (Basel, Switzerland) · 2025Review
- The Antinociceptive Role of Nrf2 in Neuropathic Pain: From Mechanisms to Clinical Perspectives.Pharmaceutics · 2024Review
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
Abstract
backgroundMany chemotherapeutic drugs, including paclitaxel, produce neuropathic pain in patients with cancer, which is a dose-dependent adverse effect. Such chemotherapy-induced neuropathic pain (CINP) is difficult to treat with existing drugs. Nuclear factor erythroid 2-related factor 2 (Nrf2) is a major regulator of antioxidative responses and activates phosphorylated Nrf2 (pNrf2). We determined the analgesic effects of bardoxolone methyl (BM), an Nrf2 activator, and the role of pNrf2 on CINP.
methodsCINP was induced in rats by intraperitoneally injecting paclitaxel on 4 alternate days in rats. BM was injected systemically as single or repeated injections after pain fully developed. RNA transcriptome, mechanical hyperalgesia, levels of inflammatory mediators and pNrf2, and location of pNrf2 in the dorsal root ganglia (DRG) were measured by RNA sequencing, von Frey filaments, Western blotting, and immunohistochemistry in rats and human DRG samples. In addition, the mitochondrial functions in 50B11 DRG neuronal cells were measured by fluorescence assay.
resultsOur RNA transcriptome of CINP rats showed a downregulated Nrf2 pathway in the pain condition. Importantly, single and repeated systemic injections of BM ameliorated CINP. Paclitaxel increased inflammatory mediators, but BM decreased them and increased pNrf2 in the DRG. In addition, paclitaxel decreased mitochondrial membrane potential and increased mitochondrial volume in 50B11 cells, but BM restored them. Furthermore, pNrf2 was expressed in neurons and satellite cells in rat and human DRG.
conclusionsOur results demonstrate the analgesic effects of BM by Nrf2 activation and the fundamental role of pNrf2 on CINP, suggesting a target for CINP and a therapeutic strategy for patients.
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