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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Interaction of psychotropic drugs with phospholipids.

The interactions of psychotropic drugs with phospholipids, including lysophosphatidylcholine, phosphatidylinositol, and lysophosphatidylserine, were studied using calmodulin-dependent cyclic nucleotide phosphodiesterase partially purified from the cortex of hog brain. All the compounds used inhibited both calmodulin- and phospholipid-stimulated phosphodiesterase activity but not the basal activity. Fluphenazine was confirmed by kinetic analysis to be a competitive inhibitor, with both calmodulin and phospholipid. Using fluphenazine-Sepharose affinity chromatography, it was demonstrated that fluphenazine did not interact with the enzyme. The potencies of antipsychotics such as fluphenazine in inhibiting the various phospholipid-dependent activations decreased in the following order: lysophosphatidylcholine-, phosphatidylinositol-, and lysophosphatidylserine-dependent activation. On the other hand, antidepressant drugs exhibited similar inhibitory potencies towards lysophosphatidylcholine- and phosphatidylinositol-dependent activation. Antipsychotic and antidepressant drugs appear to have different characteristics with regard to lipid-drug interaction.[1]


  1. Interaction of psychotropic drugs with phospholipids. Kanno, K., Sasaki, Y. Biochem. Pharmacol. (1982) [Pubmed]
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