内リンパ嚢におけるイオン構成
1982 年 13 巻 1 号 p. 65-67
詳細
1982 年 13 巻 1 号 p. 65-67
The Cl--activity in the endolymph of the endolymphatic sac and in the cochlear duct were measured with Cl--sensitive double barrelled microelectrodes. The Cl--activity in the endolymphatic sac fluid was lower than in the cochlear duct. A small positive DC-potential was recorded in the endolymphatic sac. During anoxia DC-potential decreased and the Cl--activity in the endolymphatic sac increased. The K/Na ratio in the epithelial cells and subepithelial tissue of endolymphatic sac was measured by LAMMA ® technique. The K/Na ratio in the epithelial cells decreased after ethacrynic acid injection (60 mg/kg i. v.). These findings suggest that the ions in the endolymphatic sac are actively transported inwards and outwards.
