Berjón A, Jordana R, Ponz F
Rev Esp Fisiol. 1977 Sep;33(3):227-32.
Absorption of glucose, galactose, fructose and leucine from luminal to coelomic compartments across the intestinal wall of Scherotheca sp. seems to be a simple diffusion process and not a product of active transport or facilitated diffusion. A concentration gradient never developed from identical initial concentrations of the 14C-labelled substrates on either side of in vitro everted intestinal sacs. The rates of net passage of glucose and galactose were in linear function with the respective sugar concentration gradient. A competition between these two sugars was not observed. The diffusion rate of glucose was higher from mucosal to serosal than in reverse direction. Intestinal tissues synthesized glycogen from glucose in the medium, this process being strongly inhibited by dinitrophenol.
在Scherotheca sp.的肠道壁上，葡萄糖、半乳糖、果糖和亮氨酸从肠腔向体腔隔室的吸收似乎是一个简单的扩散过程，而非主动运输或易化扩散的产物。在体外外翻肠囊两侧，14C标记底物的初始浓度相同，从未形成浓度梯度。葡萄糖和半乳糖的净通过速率与各自的糖浓度梯度呈线性函数关系。未观察到这两种糖之间的竞争。葡萄糖从黏膜到浆膜的扩散速率高于相反方向。肠道组织从培养基中的葡萄糖合成糖原，该过程受到二硝基酚的强烈抑制。
