Effects of N4-methyl and N4,N4-dimethyl derivatives of 5-azacytidine on liver RNA synthesis and gastric secretion in rats.

: Of different N-alkyl substituted derivatives of 5-azacytidine tested for their action on gastric secretion in rats with ligated pylorus the most effective beside 5-azacytidine were N4-methyl and N4,N4-dimethyl derivatives. The drugs blocked gastric secretion, gastric acidity, the extent of hemorrhage and the number and size of gastric defects. Simultaneously a higher synthesis of RNA in the liver of drug-treated animals was observed.