Active transport of sugars in tortoise intestine

C. Lamsfus
R. Jordana
F. Ponz
57

Abstract

The tortoise intestine capability for active transport of sugars has been studied in vitro at 30 degrees C, using labelled sugars. A release of glucose from the glycogen stores of the intestinal wall to the medium took place throughout the incubation period of the sacs. An active transport of 14C-D-glucose against a concentration gradient from the mucosal to the serosal compartment was evident, whereas no such activity could be detected for 14C-D-galactose. The tissue oxygen uptake was 36% higher with glucose than with galactose in the medium.

Keywords:
Active, Animals, Biological Transport, Galactose/metabolism, Glucose/metabolism, Intestinal Absorption, Intestine, Oxygen Consumption, Small/metabolism, Turtles/metabolism

Authors

C. Lamsfus
R. Jordana
F. Ponz


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