alexa [3H]-monoamine uptake inhibition properties of kava pyrones.


Medicinal chemistry

Author(s): Seitz U, Schle A, Gleitz J

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Abstract Three kava pyrones, the natural compounds (+)-methysticine and (+)-kavain, and the synthetic racemate (+/-)-kavain, were tested concerning their action on in vitro uptake of monoamines in synaptosomes prepared from the cerebral cortex and hippocampus of rats. (+/-)-Kavain and (+)-kavain were found to potently inhibit the uptake of [3H]-noradrenaline. Uptake of [3H]-noradrenaline was inhibited in the following order of potency: (+/-)-kavain = (+)-kavain > (+)-methysticine, whereas none of the kava pyrones efficiently blocked the uptake of [3H]-serotonin. The results indicate a pyrone-specific non-stereo-selective inhibition of the [3H]-noradrenaline uptake which might be responsible for or, at least, contribute to the psychotropic properties of kava pyrones. This article was published in Planta Med and referenced in Medicinal chemistry

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