RT Journal Article SR Electronic T1 EFFECT OF ETHIONINE AND CARBON TETRACHLORIDE ON URETHAN AND PHENOBARBITAL INDUCED CHANGES IN HEXOBARBITAL ACTION JF Journal of Pharmacology and Experimental Therapeutics JO J Pharmacol Exp Ther FD American Society for Pharmacology and Experimental Therapeutics SP 282 OP 286 VO 131 IS 3 A1 James M. Fujimoto A1 Gabriel L. Plaa YR 1961 UL http://jpet.aspetjournals.org/content/131/3/282.abstract AB The effect of ethionine and CCl4 on the urethan or phenobarbital shortening of hexobarbital sleeping time was studied in mice. If ethionine or CCl4 was given simultaneously with urethan or phenobarbital, the normally observed shortening response was blocked. If, however, ethionine or CCl4 was given 24 hours after the urethan or phenobarbital, the response was not blocked. These data are interpreted to indicate that the urethan and phenobarbital responses may be due to enzyme induction. These effects were produced with doses of ethionine and CCl4 which had no effect on normal sleeping time and bromsulfalein retention.