Background: To date, the pathogenesis of Meniere's disease (MD) remains unclear. Previous research found that the SLC4A1 gene significantly down-regulated. Aims: This study sought to understand the effect of SLC4A1 on the pathogenesis of MD. ELH C57 mice models were induced by intraperitoneal injection of AVP. Material and methods: The mRNA expression levels of SLC4A1, SLC4A10 and SLC26A4 were monitored by real-time quantitative PCR, the protein expression levels of SLC4A1 were monitored by immunoblotting and immunofluorescence before and after the ELH. DIDS is an inhibitor of SLC4A1. The expression levels of SLC4A1 were also monitored in the AVP + DIDS group. Results: We successfully established the model of ELH after applied AVP. The results of HE staining showed displacement of Reissner's membrane with bulge to scala vestibule in ears of the AVP group. Cochlea/ELS SLC4A1 protein and SLC4A1, SLC4A10, SLC26A4 mRNA expressions were reduced significantly in C57 mice of the AVP group. The SLC4A1 protein expression levels and SLC4A1, SLC4A10, SLC26A4 mRNA expression levels declined more obvious in the cochlea and ELS in C57 mice of the AVP + DIDS group. Conclusions and significance: SLC4A1 was a protective factor in the pathogenesis of MD, but the mechanisms were unknown.
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