Takumida M, Bagger-Sjöbäck D, Wersäll J, Harada Y
Department of Otolaryngology, Karolinska Sjukhuset, Karolinska Institutet, Stockholm, Sweden.
Arch Otorhinolaryngol. 1989;246(1):56-60. doi: 10.1007/BF00454136.
Carbonic anhydrase activity was demonstrated cytochemically on an ultrastructural level in the vestibular end organs of the guinea pig. Reaction product was found in the dark cells, transitional cells, cells of the planum semilunatum and supporting cells. In the dark cells, reaction product was observed in the cytoplasm as well as in the basal infoldings. Reaction product was also observed in the basal infoldings of the transitional cells and the cells of the planum semilunatum. The globular structures inside the supporting cells, transitional cells and the cells of the planum semilunatum were also surrounded by the reaction product. These findings suggest that carbonic anhydrase may have different functions, such as water and ion transport, respiration, nutrition and calcium carbonate deposition in the vestibular end organs.
通过细胞化学方法在超微结构水平上证实了豚鼠前庭终器中碳酸酐酶的活性。在暗细胞、过渡细胞、半月形平面细胞和支持细胞中发现了反应产物。在暗细胞中，在细胞质以及基底褶中观察到反应产物。在过渡细胞和半月形平面细胞的基底褶中也观察到反应产物。支持细胞、过渡细胞和半月形平面细胞内的球状结构也被反应产物包围。这些发现表明碳酸酐酶可能具有不同的功能，如前庭终器中的水和离子转运、呼吸、营养和碳酸钙沉积。
