title: Memory of the rhythmic change in activity of duodenal alkaline phosphatase in rats.
abstract: Studies were made on memory of the rhythmic change in activity of duodenal alkaline phosphatase in rats. During starvation, the peak enzyme activity decreased gradually disappearing in 4 days. The peak activity of duodenal alkaline phosphatase was retained by feeding starch diet for 4 days instead of starvation for 4 days, but not by feeding casein diet for the same period. Starvation for one day after feeding casein diet for 4 days resulted in disappearance of the peak activity. However, the peak activity was still retained after one day of starvation after 4 days on starch diet. Therefore, starch feeding appears to be important in the memory of the rhythmic change in activity of duodenal alkaline phosphatase.
mesh_terms: D000469:Alkaline Phosphatase / Q000378:metabolism*; D000818:Animals; D002364:Caseins / Q000494:pharmacology; D002940:Circadian Rhythm / Q000187:drug effects; D004032:Diet; D004386:Duodenum / Q000201:enzymology*; D008297:Male; D051381:Rats; D011919:Rats, Inbred Strains; D013213:Starch / Q000494:pharmacology; D013217:Starvation; D013997:Time Factors
chemical_list: D002364:Caseins; D013213:Starch; D000469:Alkaline Phosphatase