加州海兔肠上皮细胞中的经尖顶 Na⁺ 电化学势差与溶质积累

Transapical Na+ electrochemical potential difference and solute accumulation in Aplysia californica enterocytes.

作者信息

Gerencser G A

出版信息

Comp Biochem Physiol A Comp Physiol. 1984;78(1):137-40. doi: 10.1016/0300-9629(84)90105-1.

Abstract

Extracellular water averaged 20% of total intestinal water. The sugar, D-galactose, was accumulated by the Aplysia enterocytes. The amino acids glycine, L-alanine and alpha-aminoisobutyric acid (AIB) were all accumulated by the Aplysia enterocytes. The electrochemical potential difference for Na+ across the mucosal membrane of Aplysia enterocytes was energetically adequate in driving D-galactose, L-alanine, glycine or AIB uphill into the Aplysia enterocytes.

摘要

细胞外水平均占肠道总水分的20%。糖D-半乳糖被海兔肠上皮细胞积累。氨基酸甘氨酸、L-丙氨酸和α-氨基异丁酸（AIB）均被海兔肠上皮细胞积累。海兔肠上皮细胞黏膜膜上Na⁺的电化学势差在驱动D-半乳糖、L-丙氨酸、甘氨酸或AIB逆浓度梯度进入海兔肠上皮细胞方面在能量上是充足的。