Possible involvement of amine oxidase inhibition in the sympathetic activation induced by khat (Catha edulis) chewing in humans.

Abstract:

:The possibility that phenylalkylamines (cathinone and cathine) of khat, like amphetamines, are amine oxidase inhibitors with clinical significance is evaluated. Results show that khat chewing induces a significant increase in blood pressure, body temperature and urinary catecholamines in khat naive subjects. On the other hand, in habitual consumers a significant enhancement only of blood pressure is observed. Urinary concentrations of vanilmandelic acid show an inhibitory trend in both groups of subjects. This has been related to a decrease in catecholamine deamination. In fact, oxidative deamination of benzylamine catalyzed by beef plasma amine oxidase is non-competitively inhibited in vitro by cathinone (Ki = 0.05 mM) and cathine (Ki = 10 mM) as well as by amphetamine (Ki = 7.9 mM).

journal_name

J Ethnopharmacol

authors

Nencini P,Amiconi G,Befani O,Abdullahi MA,Anania MC

doi

10.1016/0378-8741(84)90097-7

subject

Has Abstract

pub_date

1984-06-01 00:00:00

pages

79-86

issue

1

eissn

0378-8741

issn

1872-7573

pii

0378-8741(84)90097-7

journal_volume

11

pub_type

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