Comparative permeability to water and to certain solutes of the egg cells of three marine invertebrates, Arbacia, Cumingia and Chaetopterus
Comparative permeability to water and to certain solutes of the egg cells of three marine invertebrates, Arbacia, Cumingia and Chaetopterus
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DOI：
10.1002/jcp.1030140211
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发表时间：
1939-12-01
影响因子：
--
通讯作者：
Ricca, RA
中科院分区：
文献类型：
--
作者：
Lucké, B;Hartline, HK;Ricca, RA
以3种海洋无脊椎动物（环节动物C. pergamantaceus）的未受精卵细胞为材料，研究了其对水和2种溶质（乙二醇和甘油）的相对渗透性。软体动物C. tellenides和棘皮动物A. punctulata。对水的渗透性，毛羽属平均0.44，Cumingia为0.46，Arbacia为0.12。这些值表示每分钟每平方[亩]进入细胞的水的立方数。在摄氏225度的低渗海水中内渗时，每一大气压的渗透压差。毛羽类对乙二醇的渗透率平均为14.3，Cumingia为15.6，Arbacia为3.5。这些值表示每分钟以conc速度通过细胞表面每平方u的乙二醇的摩尔数x10 -15。每升相差1摩尔，温度为22.5度。对于渗透性较慢的溶质甘油，毛羽类的渗透率平均为6.2，而Arbacia类仅为0.03；虽然获得的数值并不完全令人满意，但它们表明了数量级，与毛羽龙惊人的高数值形成鲜明对比。这些通透性的差异与细胞的大小无关，细胞的大小在三种类型的卵子中差异很大。以3种海洋无脊椎动物（环节动物C. pergamantaceus）的未受精卵细胞为材料，研究了其对水和2种溶质（乙二醇和甘油）的相对渗透性。软体动物C. tellenides和棘皮动物A. punctulata。对水的渗透性，毛羽属平均0.44，Cumingia为0.46，Arbacia为0.12。这些值表示每分钟每平方[亩]进入细胞的水的立方数。在摄氏225度的低渗海水中内渗时，每一大气压的渗透压差。毛羽类对乙二醇的渗透率平均为14.3，Cumingia为15.6，Arbacia为3.5。这些值表示每分钟以conc速度通过细胞表面每平方u的乙二醇的摩尔数x10 -15。每升相差1摩尔，温度为22.5度。对于渗透性较慢的溶质甘油，毛羽类的渗透率平均为6.2，而Arbacia类仅为0.03；虽然获得的数值并不完全令人满意，但它们表明了数量级，与毛羽龙惊人的高数值形成鲜明对比。这些通透性的差异与细胞的大小无关，细胞的大小在三种类型的卵子中差异很大。
Comparative permeability to water, and 2 solutes, i.e., ethylene glycol and glycerol, was investigated with the unfertilized egg cells of 3 marine invertebrates, the annelid C. pergamantaceus; the mollusc, C. tellenoides, and the echinoderm, A. punctulata. Permeability to water was found to avg. 0.44 for Chaetopterus, 0.46 for Cumingia and 0.12 for Arbacia. These values express the number of cubic [mu] of water entering the cell per min., per square [mu]. of surface, per atmosphere difference in osmotic pressure, during endosmosis in hypo-tonic sea water at 225[degree]C. Permeability to ethylene glycol averages 14.3 for Chaetopterus, 15.6 for Cumingia, and 3.5 for Arbacia. These values express the number of mols X 10-15 of ethylene glycol which enter through each square u of cell surface per min. at a conc. difference of 1 mol per liter and a temp. of 22.5[degree]. For the slowly penetrating solute glycerol, values of permeability for Chaetopterus have averaged 6.2, but for Arbacia only 0.03; while the values obtained for Arbacia are not entirely satisfactory they indicate the order of magnitude, and are in sharp contrast to the surprisingly high values for Chaetopterus. These differences in permeability are not correlated with the size of the cells, which differs greatly in the 3 types of eggs.Comparative permeability to water, and 2 solutes, i.e., ethylene glycol and glycerol, was investigated with the unfertilized egg cells of 3 marine invertebrates, the annelid C. pergamantaceus; the mollusc, C. tellenoides, and the echinoderm, A. punctulata. Permeability to water was found to avg. 0.44 for Chaetopterus, 0.46 for Cumingia and 0.12 for Arbacia. These values express the number of cubic [mu] of water entering the cell per min., per square [mu]. of surface, per atmosphere difference in osmotic pressure, during endosmosis in hypo-tonic sea water at 225[degree]C. Permeability to ethylene glycol averages 14.3 for Chaetopterus, 15.6 for Cumingia, and 3.5 for Arbacia. These values express the number of mols X 10-15 of ethylene glycol which enter through each square u of cell surface per min. at a conc. difference of 1 mol per liter and a temp. of 22.5[degree]. For the slowly penetrating solute glycerol, values of permeability for Chaetopterus have averaged 6.2, but for Arbacia only 0.03; while the values obtained for Arbacia are not entirely satisfactory they indicate the order of magnitude, and are in sharp contrast to the surprisingly high values for Chaetopterus. These differences in permeability are not correlated with the size of the cells, which differs greatly in the 3 types of eggs.