Idebenone protects against ethanol toxicity in HT-22 cells through strengthening neuroimmune response

Year 2023, Volume: 8 Issue: 2, 121 - 128, 30.08.2023

Betul Cicek

https://doi.org/10.31797/vetbio.1305675

Abstract

Idebenone, an analogue of coenzyme Q10, may function as a neuroprotective agent with its antioxidant and anti-inflammatory properties. The current report was designed to examine the beneficial effects of idebenone on ethanol-related neurotoxicity in hippocampal neuronal HT-22 cells in vitro and annotate the neuroprotective mechanism of idebenone. 75 mM ethanol was applied to the cells for 24h to develop ethanol toxicity. Then, different concentrations of idebenone (final concentration in the well to be 1, 2.5, and 5 μM) were applied to HT-22 cells for 24 h to explore the protective impact against ethanol-induced hippocampal damage. Cell viability was evaluated with MTT test. MDA, SOD, and GSH concentrations were examined to interpret oxidative damage. Moreover, the effects of idebenone on IL-1β, IL-6, and IL-23 neuroimmune-related genes expression levels were assigned by the RT-PCR analysis. In our study, 75 mM ethanol decreased neuronal cell viability by approximately 61%. All concentrations of idebenone were not toxic to neurons. In addition, idebenone increased cell viability by reducing the damage caused by alcohol. Idebenone reversed the reduction in antioxidant capacity caused by ethanol through decreasing MDA and increasing SOD and GSH levels. In addition, idebenone attenuated ethanol-induced impairment in neuroimmune and neuroinflammatory responses by reducing IL-1β, IL-6, and IL-23 mRNA expression levels. Treatment with idebenone increased antioxidant capacity and a significant improvement was achieved in neuroimmune and neuroinflammatory parameters. Possible mechanisms underlying these beneficial effects cover the down-regulation of IL-1β, IL-6, and IL-23 receptors, and antioxidant restoration of idebenone.

Keywords

Ethanol toxicity, HT-22, Idebenone, Neuroimmunity, Oxidative damage

Supporting Institution

The authors disclosed that they did not receive any grant during conduction or writing of this study

Project Number

Not applicable.

Thanks

Not applicable.

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