Thiamine Countertransport in rat small intestine

Summary Countertransport experiments on rings of everted jejunum of rats suggest that thiamine is actively transported by a mobile carrier in intestinal epithelial cells and that pyrithiamine, but not oxythiamine or deshydroxythiamine, has the common carrier with thiamine.This investigation was partially supported by a grant (No. 115. 2162. O 1323) from Consiglio Nazionale delle Ricerche, Rome, Italy.