8-烷基小檗碱对焦虑模型小鼠行为学及脑组织神经递质的影响

目的 研究8-烷基小檗碱的抗焦虑作用,初步探讨其作用机制。方法 通过明暗箱和高架十字迷宫实验,观察8-烷基小檗碱对焦虑模型小鼠行为学的影响;采用高效液相-荧光检测器,检测小鼠脑组织内神经递质去甲肾上腺素(NE)、多巴胺(DA)和5-羟色胺(5-HT)的量。结果 明暗箱实验结果表明,相对于对照组,8-己基小檗碱、8-辛基小檗碱、8-十二烷基小檗碱和8-十六烷基小檗碱给药后能显著延长小鼠在明箱内的停留时间(P<0.05),8-辛基小檗碱组的穿箱次数显著增多(P<0.05);高架十字迷宫实验结果显示,8-辛基小檗碱组小鼠进入开臂次数百分比和开臂滞留时间百分比明显高于对照组(P<0.05);小鼠脑内神经递质NE、DA和5-HT的量变化以8-辛基小檗碱组最为明显。结论 8-烷基小檗碱具有一定的抗焦虑作用,其作用机制可能与降低脑组织中NE、DA和5-HT的量有关。

Influence of 8-alkyl-berberine on ethology and neurotransmitter in brain tissue of anxiety model mice

Objective To investigate the anti-anxiety effect of 8-alkyl-berberine in anxiety model mice and explore the mechanism. Methods The anti-anxiety effect of 8-alkyl-berberine was evaluated with light-dark box test and elevated plus-maze (EPM). The contents of norepinephrine (NE), dopamine (DA), and 5-hydroxytryptamine (5-HT) in brain tissue were detected by high performance liquid chromatography-fluorescence detector (HPLC-FLD). Results The light-dark box test indicated that 8-butyl-, 8-octyl-, 8-dodecyl-, and 8-hexadecyl-berberine could obviously increase the time spent in light box (P < 0.05) compared with the control group. The number of transitions in 8-octyl-berberine group was significantly increased (P < 0.05). The results of EPM showed that 8-octyl-berberine significantly increased the percentage of the times entering the open arms (OE%) and staying duration in the total period (OT%) (P < 0.05). There was variation observed in the concentration of monoamine neurotransmitters of 8-octyl-berberine. Conclusion 8-Alkyl-berberine has a certain anxiolytic effect. The mechanism may be related to the regulation of the contents of NE, DA and 5-HT in the brain tissues.