首页> 外文期刊>Pharmacology, Biochemistry and Behavior >Suppressive effects of vietnamese ginseng saponin and its major component majonoside-R2 on psychological stress-induced enhancement of lipid peroxidation in the mouse brain.
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Suppressive effects of vietnamese ginseng saponin and its major component majonoside-R2 on psychological stress-induced enhancement of lipid peroxidation in the mouse brain.

机译:越南人参皂苷及其主要成分马刀甙R2对心理应激诱导的小鼠脂质过氧化增强的抑制作用。

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摘要

We investigated the in vivo effects of Vietnamese ginseng saponin (VG saponin) and its major component majonoside-R2 (MR2) on psychological stress-induced enhancement of lipid peroxidation in the mouse brain. Psychological stress exposure using a communication box system for 4 h significantly increased the content of thiobarbituric acid reactive substance (TBARS), an index of lipid peroxidation activity, in the brain. Pretreatment with VG saponin (15-25 mg/kg, PO) and MR2 (1-10 mg/kg, IP) significantly attenuated the psychological stress-induced increase in TBARS content in the brain. The aglycone of MR2 (MR2-aglycone: 1.2 mg/kg, IP), at the equivalent dose of MR2 (i.e., 3 mg/kg, IP), also produced the suppressive effect on the increase in the TBARS content. The in vivo suppressive effect of MR2 was dose dependently attenuated by flumazenil (3 and 10 mg/kg, IP), a benzodiazepine receptor antagonist, and pregnenolone sulfate (10 mg/kg, IP), a neurosteroidal negative allosteric modulator of GABA(A) receptors. These findings suggest that VG saponin and its major component MR2 have preventive effects on the psychological stress-induced brain cell membrane damage, and that the effect of MR2 is partly due to enhancement of GABA(A)-ergic systems in the brain.
机译:我们调查了越南人参皂苷(VG皂苷)及其主要成分马角皂苷-R2(MR2)对心理应激诱导的小鼠脂质过氧化增强的体内作用。使用通讯箱系统进行4小时的心理应激暴露会显着增加大脑中硫代巴比妥酸反应性物质(TBARS)(脂质过氧化活性的指标)的含量。用VG皂苷(15-25 mg / kg,PO)和MR2(1-10 mg / kg,IP)进行预处理可显着减轻心理应激引起的脑中TBARS含量的增加。 MR2的糖苷配基(MR2-糖苷配基:1.2 mg / kg,IP),在MR2的当量剂量下(即3 mg / kg,IP),也对TBARS含量的增加产生抑制作用。 MR2的体内抑制作用被苯二氮卓类受体拮抗剂氟马西尼(3和10 mg / kg,IP)和GABA的神经甾体负变构调节剂硫酸硫酸孕烯醇酮(10 mg / kg,IP)剂量依赖性地减弱。 )受体。这些发现表明,VG皂苷及其主要成分MR2对心理应激诱导的脑细胞膜损伤具有预防作用,而MR2的作用部分归因于大脑中GABA(A)能量系统的增强。

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