Apolipoprotein E (apoE)-deficient and control mice were treated chronically with either the acetylcholinesterase (AChE) inhibitor ENA713, or the M1 muscarinic agonist AF150(S). Both treatments reversed the spatial working memory impairment of apoE-deficient mice but they differed in their effects on the levels of brain AChE activity. AF150(S) enhanced the brain AChE activity of apoE-deficient mice and rendered it similar to that of the untreated controls, whereas ENA713 reduced the brain AChE activity of control mice but had no effect on that of apoE-deficient mice. These findings suggest that AChE inhibition and M1 muscarinic activation have similar beneficial cognitive effects on apoE-deficient mice, but that the cellular and molecular mechanisms underlying these effects differ.
        
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Chapman S, Fisher A, Weinstock M, Brandies R, Shohami E, Michaelson DM (1998) The effects of the acetylcholinesterase inhibitor ENA713 and the M1 agonist AF150(S) on apolipoprotein E deficient mice Journal de Physiologie Paris92: 299-303
Chapman S, Fisher A, Weinstock M, Brandies R, Shohami E, Michaelson DM (1998) Journal de Physiologie Paris92: 299-303