Journal
PHARMACOLOGY BIOCHEMISTRY AND BEHAVIOR
Volume 71, Issue 1-2, Pages 183-190Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0091-3057(01)00695-5
Keywords
anxiety; medicinal plant; validation; phytomedicine; plus-maze
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Cecropia glazioui Sneth has been used in most Latin American countries as an antihypertensive, cardiotonic, and antiasthmatic folk medicine. In the cardiovascular studies to define its antihypertensive action it was noteworthy that animals treated with the aqueous extract (AE) of C. glazioui were much calmer than control animals. That observation prompted the present study, aimed at an investigation of the effects of AE and of two semipurified fractions on mouse behavior as evaluated in the elevated plus-maze test (EPM). Male adult Swiss mice were treated with AE (0.25-1 g/kg po) acutely (1 h) or repeatedly (24, 7, and 1.5 h before the test). After repeated administration of AE, the frequency of entries in the open arms of EPM was increased threefold. A similar profile of action was observed after treatment with the butanolic fraction (Fbut) but not with the aqueous fraction (Faq). These findings suggest that the AE of C. glazioui promotes an anxiolytic-like effect in mice. The active principles responsible for this action are present in the less polar fraction of the extract, the main constituents of which are flavonoids and terpenes, among other compounds. (C) 2002 Elsevier Science Inc. All rights reserved.
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