EAST/SeSAME syndrome and functional expression of inward rectifier potassium channel Kir4.1 in the inner ear
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关键词:
- KCNJ10 /
- endocochlear potential /
- hearing loss /
- EAST syndrome /
- SeSAME syndrome
Abstract: Inwardly rectifying potassium(Kir)channels exhibit an asymmetrical conductance at hyperpolarization(high conductance)compared to depolarization(low conductance).The KCNJ10 gene which encodes an inwardly rectifying K+channel Kir4.1subunit plays an essential role in the inner ear and hearing.Mutations or deficiency of KCNJ10 can cause hearing loss with epilepsy,ataxia,sensorineural deafness,and renal tubulopathy(EAST)or SeSAME(seizures,sensorineural deafness,ataxia,mental retardation,and electrolyte imbalance)syndromes.In this review,we mainly focus on the expression and function of Kir4.1channels in the inner ear and mutation-induced EAST/SeSAME syndromes to provide insight for understanding the pathogenesis of deafness induced by KCNJ10 deficiency.-
Key words:
- KCNJ10 /
- endocochlear potential /
- hearing loss /
- EAST syndrome /
- SeSAME syndrome
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