To observe the effect of Shuangcao Tuihuang Granule-1 (SCTH-1) in treating severe jaundice of acute icterohepatitis and to study its mechanism. Methods: Thirty-four patients with severe jaundice of acute icterohepatitis were treated with conventional western medicine and SCTH-1, the therapeutic effects were analyzed and compared with that in the control group (treated with western medicine alone). In the animal experimental studies, the influences of SCTH-1 on acute liver injury, liver superoxide dismutase (SOD) and serum ALT and AST in mice were monitored. Results: The markedly effective rate in the treated group and the control group was 73.5% and 59.1% respectively, and the effective rate was 23.5% and 40.9% respectively. The markedly effective rate in the treated group was obviously higher than that in the control group (P＜0.05). Experimental study showed that SCTH-1 could reduce the level of serum transaminase and liver tissue damage in mice with acute liver damage. In addition, SCTH-1 could raise the activity of liver SOD (P＜0.05). Conclusion: SCTH-1 could accelerate the jaundice subsidence, improve the liver function and ameliorate the liver injury, its mechanism was possibly correlated with raising SOD activity and scavenging oxygen free radicals.

Effect of acupuncture on free radicals after spinal cord injury was observed in rats with experimental spinal cord injury (SCI). Results indicated that within 24 hours after SCI malondialdehyde (MDA) increased progressively, 2 hours after SCI it reached the peak; and the superoxide dismutase (SOD) activity decreased significantly at the same hours, the decrease being the most marked 2-6 hours after SCI. The MDA content in the acupuncture group was significantly lower (P<0.05) and the SOD activity higher (P<0.01) than that of the control group respectively. It is suggested that acupuncture inhibits production of MDA and increases the SOD activity.

Large and small doses of drugs for improving blood circulation and removing blood stasis were used in model rats to treat mild chronic hepatic damage induced by carbon tetrachloride (CCl4). The results show that large dose of Dang Gui (当归 Radix Angelicae Sinensis) and Dan Shen (丹参 Radix Salviae Miltiorrhizae) (drugs for regulating blood flow) and small dose of Yu Jin (郁金 Radix Curcumae) and Niu Xi (牛膝 Radix Achyranthis Bidentatae) (drugs for activating blood flow) can significantly elevate the activity of SOD (P<0.05) and/or lower the T/K ratio, markedly reduce the MDA content (P<0.05 or P<0.01) and significantly decrease the activities of ALT and AST (P<0.05 or P<0.01), demonstrating that these drugs are effective in combating oxygen free radicals (OFR) in chronic liver damage. On the contrary, large dose of Tu Bie Chong (土鳖虫 Eupolyphaga seu Steleophaga) and E Zhu (莪术 Rhizoma Curcumae) (drugs for removing blood stasis) tend to increase the ALT and AST (P<0.05) activities. The results suggest that the synergism of elevation of the SOD activity and reduction of T/K ratio contributes to the action of drugs for improving blood circulation and removing blood stasis in combating the liver damage induced by CCl4.

旅途精神病患者血清超氧化物歧化酶活性及丙二醛水平

背景 氧化应激是一种神经毒性因素,可能会促使急性精神病的发生.目的 评估旅途精神病(travel-induced psychosis)与氧化应激的关系.方法 对乘坐长途火车诱发的 21 例旅途精神病住院患者,在其入院时采用简明精神病评定量表(Brief Psychiatric Rating Scale,BPRS)评定精神症状,入院次日清晨测定其血清超氧化物歧化酶(super oxide dlsmutase,SOD)活性和丙二醛(malondialdehyde,MDA)含量;待患者精神病性症状缓解后(通常为小剂量抗精神病药治疗后 2~6天),再次进行上述检测.选取性别、年龄匹配的 21 名健康志愿者为对照组,比较患者与对照者的血清SOD活性和MDA含量.结果 入院时患者的血清SOD活性和MDA含量均高于对照组.精神症状缓解后,患者的BPRS评分、血清SOD活性和MDA含量均显著下降,但后两者仍高于对照组.入院时患者的BPRS总分与SOD活性呈正相关(r=0.32,p=0.164),与MDA含量也呈正相关(r=0.34,p=0.126),但均无统计学意义.治疗后BPRS总分的下降与SOD活性的下降弱相关(r=0.28,p=0.217),也与MDA含量的下降也呈弱相关(r=0.29,p=0.211).结论 研究结果提示,氧化应激的神经毒性作用与旅途精神病的发生直接相关.这或许能够帮助我们理解其他急性精神病性障碍(如精神分裂症)的发生.

AIM: To study the protecitve mechanism of Ligustrazine (LT), Shenmai Parenteral Injection (SPI), combination of Ligustrazine and Shenmai Parenteral Injection (LSP) to myocardial injury after brain ischemia-reperfusion in aged rats from the change in ATPase and free radical in order to provide theoretical basic for prevention and cure of cerebral infarction. METHODS: Aged rats (more than 20 months) were divided into model group, control group, Nimotop group, LT group, SPI group and LSP group. We measured the following items in aged rats with 60 min of reperfusion after 30 min of brain ischemia: the content of MDA, the activities of superoxide dismutase (SOD), lactic dehydrrogenase (LDH), creatine phosphokinase (CPK), ATPase. RESUTLS: The CPK and LDH activities in the model rats increased obviously. The serum CPK activity in the LSP group, the LT group, nimotop group was lower than those in the model group obviously. The serum LDH activities in LT group and SPI group were obviously lower compared with those in the model group. The activity of Na＋-K＋-ATPase and Ca2＋-ATPase in model group was decreased. Contrast to the model group, the activity of Na＋-K＋-ATPase in LSP group, Nimotop group, LT group and the activities of Ca2＋-ATPase in the LSP group were higher. The serum MDA/SOD ratio was larger than that in the control group. The decrease in myocardial SOD activity and the increase in the MDA level, MDA/SOD ratio in the model group showed significant difference compared with that in the control. The MDA level in the LSP group was lower than that in the model group. The increase in myocardial SOD activity and decrease in MDA, MDA/SOD ratio were obvious in the LSP group compared with the model group. CONCLUSION: The myocardial injury after brain ischemia-reperfusion in aged rats was related to the decrease in the activity of Na＋-K+-ATPase and injury of free radical. LT, SPI, LSP and Nimotop could prevent this inury. Nimotop and LT could enhanced the activity of Na+-K+-ATPase obviously. SPI could enhance the activity of Ca2＋-ATPase and restrain the injury of free redical and lipid peroxidation. This may be the mechanism of restraining myocardial injury after brain ischemia-reperfusion.