central administration of peganum harmala seeds methanolic extract increases fear behavior in rats

نویسندگان

vaezi gholamhassan

masoud fereidoni

leila etemadi dept. biology, islamic azad university, branch of damghan, damghan, iran

maryam sabzali

چکیده

traditionally, peganum harmala seeds (p.h) have been extensively used in the asia region. we have previously reported the increase of fear behavior by systemic administration of p.h extract. here, we evaluated the effect of central administration of the extract on the fear behavior. method: methanolic extract of the plant&apos;s seeds (37% humidity) was prepared for the investigation. elevated plusmaze apparatus was used for evaluating the fear behavior. adult male rats were categorized in 7 main groups (n=6). 1) sham control (saline 1 ul/rat, i.c.v) 2) harmaline treated group (50 ug/rat, i.c.v). 3) extract treated groups (10, 20, 25, 50, 100 ug/rat i.c.v respectively). results: all the doses of the p.h methanolic extract as like as harmaline caused fear behavior (p<0.05). there was no significant difference between the effects of harmaline and the doses of the plant extract. discusion: overall, it is possible that the main alkaloid of the p.h (harmaline) is responsible for the increasing of fear behavior. the effect seems to be done trough the central nervous system neurochemical mechanisms.

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عنوان ژورنال:
physiology and pharmacology

جلد ۱۱، شماره ۴، صفحات ۳۰۰-۳۰۵

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