Article Publish Status: FREE
Abstract Title:

Neuroprotective Effect of Baicalein Against Oxaliplatin-Induced Peripheral Neuropathy: Impact on Oxidative Stress, Neuro-inflammation and WNT/β-Catenin Signaling.

Abstract Source:

Mol Neurobiol. 2022 May 9. Epub 2022 May 9. PMID: 35527292

Abstract Author(s):

Simrandeep Jugait, Aparna Areti, Karthika Nellaiappan, Priyanka Narwani, Priya Saha, Ravichandiran Velayutham, Ashutosh Kumar

Article Affiliation:

Simrandeep Jugait


Oxaliplatin, an effective anti-cancer agent used in the treatment of colorectal cancer, is associated with severe dose-limiting side effects like peripheral neuropathy, which currently remains a major unmet clinical need. This study was designed to investigate the possible neuroprotective potential of a bioflavonoid, baicalein in an experimental model of oxaliplatin-induced peripheral neuropathy. Rats were administered with a dose of 4 mg/kg oxaliplatin i.p. twice per week for four weeks, and were evaluated for behavioral and functional nerve parameters, followed by biochemical, immunohistochemical and western blot analysis. This study shows that baicalein reversed oxaliplatin-induced behavioral deficits and significantly prevented oxaliplatin-induced sensory nerve conduction deficits in rats. Molecular analysis revealed baicalein significantly strengthened the antioxidant defense system by enhancing the expression of MnSOD, HO-1, and GSH levels. Baicalein treatment neutralized the oxaliplatin-induced neuroinflammation, which was evident from the significant loss of inflammatory mediators like TNF-α, IL-6 and a shunted NF-κB nuclear translocation. Additionally, baicalein treatment resulted in a significant downregulation of active β-catenin, Wnt5b and Wnt3a proteins. In line with the in vivo evidences, baicalein treatment in Neuro2a cells attenuated oxaliplatin-induced ROS, mitochondrial superoxide levels and improved neuritogenesis. Additionally, baicalein did not alter the cell viability of oxaliplatin in HCT-116 cell line. Collectively, these results suggest that baicalein may be useful for management of peripheral neuropathy associated with oxaliplatin.

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