Anxiolytic-Like Effects of Cyclopeptide Fraction Alkaloids of Zizyphi Spinosi Semen: Possible Involvement of GABA(A) Receptors

作者：Han Huishan; Ma Yuan; Eun Jae Soon; Hong Jin The; Oh Ki Wan^*

来源：Biomolecules & Therapeutics, 2008, 16(3): 261-269.

• Zizyphi Spinosi Semen
• Cyclopeptide fraction alkaloids
• Anxiolytic-like effects
• Elevated plus-maze
• Hole-board
• Open field
• Locomotor
• Grip strength
• Chloride influx
• GABA(A) subunit

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, GABA(A) receptors gamma-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 GABAA receptors.

• 出版日期2008-9