加州海兔肠上皮细胞中Na⁺、K⁺和Cl⁻的浓度及活度系数
Concentrations and activity coefficients of Na+, K+ and Cl- in Aplysia californica enterocytes.
作者信息
Gerencser G A
出版信息
Comp Biochem Physiol A Comp Physiol. 1984;77(4):717-20. doi: 10.1016/0300-9629(84)90191-9.
PMID:6143643
Abstract
Tissue water averaged 76% of tissue weight in epithelial sheets of Aplysia californica intestine. Extracellular water averaged 19.6% of total intestinal water. Intracellular Cl- concentrations averaged 110 mM with most of Cl- being bound or sequestered. Intracellular Na+ concentrations were 34.2 mM with approximately 30% bound or sequestered. Intracellular K+ concentrations were not bound and averaged 532 mM. Valinomycin lowered intracellular K+ concentrations dramatically.
摘要
加州海兔肠道上皮组织中的水占组织重量的76%。细胞外水占肠道总水量的19.6%。细胞内氯离子浓度平均为110毫摩尔，大部分氯离子处于结合或隔离状态。细胞内钠离子浓度为34.2毫摩尔，约30%处于结合或隔离状态。细胞内钾离子浓度处于游离状态，平均为532毫摩尔。缬氨霉素显著降低了细胞内钾离子浓度。
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