Active transport of sugars in tortoise intestine.
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.
D000818:Animals; D001693:Biological Transport, Active; D005690:Galactose / Q000378:metabolism*; D005947:Glucose / Q000378:metabolism*; D007408:Intestinal Absorption; D007421:Intestine, Small / Q000378:metabolism*; D010101:Oxygen Consumption; D014426:Turtles / Q000378:metabolism*
D005947:Glucose; D005690:Galactose