Oxygen uptake and active transport of glucose by small intestine of lizard Lacerta galloti

Abstract

The lizard intestine capability for active transport of D-glucose has been studied in vitro at 30 degrees C.A release of glucose and fructose from intestinal tissue to the medium took place throughout the incubation period.An active transport of glucose against a concentration gradient from the mucosal to the serosal compartment was found, but in a Na+–free medium (Tris as a substitute) this process was strongly inhibited–.The oxygen uptake was 50% higher in the presence of glucose than in its absence.