Deanol Affects Choline Metabolism in Peripheral Tissues of Mice

Abstract: Administration of 2‐dimethylaminoethanol (deanol) to mice induced an increase in both the concentration and the rate of turnover of free choline in blood. Treatment with deanol also caused an increase in the concentration of choline in kidneys, and markedly inhibited the rates of oxidation and phosphorylation of intravenously administered [3H‐methyl]choline. In the liver, deanol inhibited the rate of phosphorylation of [3H‐methyl]choline, but did not inhibit its rate of oxidation or cause an increase in the level of free choline. These findings suggest that deanol increases the choline concentration in blood by inhibition of its metabolism in tissues. Deanol may ultimately produce its central cholinergic effects by inhibition of choline metabolism in peripheral tissues, causing free choline to accumulate in blood, enter the brain, and stimulate cholinergic receptors.

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