Challier J C, Bara M, D'Athis P
Biologie de la Reproduction, Université P. et M. Curie, Paris, France.
Magnes Res. 1988 Dec;1(3-4):141-5.
The ion content of the human term placenta was determined. When ordered decreasingly according to their placental content, the series of ions was: Na greater than Cl greater than K greater than Ca greater than Mg. These levels, plotted as a function of the tissue dry weight, showed an exponential distribution. Using Cl as an extracellular marker, Na and K cellular concentrations were evaluated. The equilibrium potentials derived from these values were very different from the measured syncytial membrane potential or from the value usually recorded in non-innervated tissues.
对人类足月胎盘的离子含量进行了测定。按照胎盘含量由高到低排序，离子序列为：钠＞氯＞钾＞钙＞镁。这些水平作为组织干重的函数绘制时，呈现指数分布。以氯作为细胞外标志物，评估了钠和钾的细胞浓度。从这些值得出的平衡电位与测得的合体细胞膜电位或通常在无神经支配组织中记录的值有很大不同。
