RT Journal Article SR Electronic T1 THE RELATIONSHIP BETWEEN CHOLINESTERASE ACTIVITY AND BRAIN PERMEABILITY JF Journal of Pharmacology and Experimental Therapeutics JO J Pharmacol Exp Ther FD American Society for Pharmacology and Experimental Therapeutics SP 1 OP 4 VO 102 IS 1 A1 Margaret E. Greig A1 Thomas C. Mayberry YR 1951 UL http://jpet.aspetjournals.org/content/102/1/1.abstract AB The administration of physostigmine to mice prior to intravenous injection of either barbital or glucochloralose has been found to reduce the anesthetic lag by about 50 per cent. In the case of barbital, this is accompanied by an increase in the rate of penetration of the drug into the brain. This increased permeability of the brain to the anesthetic is attributed to inhibition of cholinesterase activity by physostigmine.