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KMID : 0606920080160030261
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Biomolecules & Therapeutics
2008 Volume.16 No. 3 p.261 ~ p.269
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Anxiolytic-Like Effects of Cyclopeptide Fraction Alkaloids of Zizyphi Spinosi Semen: Possible Involvement of Receptors
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Han Hui-Shan
Hong Jin-Tae
Oh Ki-Wan
Ma Yuan
Eun Jae-Soon
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Abstract
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This experiment was performed to investigate the anxiolytic-like effects of cyclopeptide fraction alkaloids of Zizyphi Spinosi Semen (CFAZ), by using the experimental paradigms of anxiety, and compared with those of a known anxiolytic, diazepam. CFAZ (8.0 mg/kg, p.o.) increased the percentage of time spent on the open arms and the number of open arms entries in the elevated plus-maze test, increased the number of head dips in the hole-board test, and increased the percentage of center zone ambulatory time in the open-field box. However, CFAZ has no effect on the locomotor activity, while diazepam (2.0 mg/kg, p.o.) significantly reduced locomotor activity. CFAZ did not influence the grip force in the grip strength meter test, either. From the molecular experiments, CFAZ increased chloride influx in cultured cerebellar granule cells. In addition, receptors -subunit were over-expressed by CFAZ in cultured cerebellar granule cells. It is concluded that CFAZ may have anxiolytic-like effects, and these effects may be mediated by receptors.
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KEYWORD
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Zizyphi Spinosi Semen, Cyclopeptide fraction alkaloids, Anxiolytic-like effects, Elevated plus-maze, Hole-board, Open field, Locomotor, Grip strength, Chloride influx subunit
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