目的建立HPLC法同时测定9种中草药中18种多环芳烃的残留量。方法样品的分析采用Eclipse PAH柱(4.6 mm×250 mm,5μm);流动相乙腈-水,梯度洗脱;柱温30℃;体积流量0~30 min 1 m L/min,30~40 min1.2 m L/min。结果在最佳萃取条件下,18...目的建立HPLC法同时测定9种中草药中18种多环芳烃的残留量。方法样品的分析采用Eclipse PAH柱(4.6 mm×250 mm,5μm);流动相乙腈-水,梯度洗脱;柱温30℃;体积流量0~30 min 1 m L/min,30~40 min1.2 m L/min。结果在最佳萃取条件下,18种多环芳烃在各自范围内线性关系良好(r>0.9991),平均加样回收率52.02%~103.10%,日内、日间RSD分别为0.1%~5.6%、0.2%~14.2%。所有样品中均不同程度检出了多环芳烃,陈皮中最高,达6129.86 ng/g。结论该方法操作简便,检测效率高,实用性强,可用于中草药中18种多环芳烃的检测。展开更多
Objective This study aimed to examine the effects of microcirculatory dysfunction and 654-1intervention after cardiopulmonary resuscitation on myocardial injury.Methods Landrace pigs were divided into a sham operation...Objective This study aimed to examine the effects of microcirculatory dysfunction and 654-1intervention after cardiopulmonary resuscitation on myocardial injury.Methods Landrace pigs were divided into a sham operation group(S group,n=6),ventricular fibrillation control group(VF-C group,n=8)and 654-1 intervention group(VF-I group,n=8).Hemodynamics was recorded at baseline,at recovery of spontaneous circulation(ROSC),and 1 h,2 h,4h and 6 h thereafter.Sidestream dark field(SDF)technology was used to evaluate and monitor the microcirculation flow index,total vessel density,perfusion vessel ratio,De-Backer score,and perfusion vessel density in animal viscera at various time points.Results After administration of 654-1 at 1.5 h post-ROSC,the hemodynamics in the VF-I group,as compared with the VF-C group,was significantly improved.The visceral microcirculation detected by SDF was also significantly improved in the VF-I group.As observed through electron microscopy,significantly less myocardial tissue injury was present in the VF-I group than the VF-C group.Conclusion Administration of 654-1 inhibited excessive inflammatory by improving the state of visceral microcirculation.展开更多
文摘目的建立HPLC法同时测定9种中草药中18种多环芳烃的残留量。方法样品的分析采用Eclipse PAH柱(4.6 mm×250 mm,5μm);流动相乙腈-水,梯度洗脱;柱温30℃;体积流量0~30 min 1 m L/min,30~40 min1.2 m L/min。结果在最佳萃取条件下,18种多环芳烃在各自范围内线性关系良好(r>0.9991),平均加样回收率52.02%~103.10%,日内、日间RSD分别为0.1%~5.6%、0.2%~14.2%。所有样品中均不同程度检出了多环芳烃,陈皮中最高,达6129.86 ng/g。结论该方法操作简便,检测效率高,实用性强,可用于中草药中18种多环芳烃的检测。
文摘Objective This study aimed to examine the effects of microcirculatory dysfunction and 654-1intervention after cardiopulmonary resuscitation on myocardial injury.Methods Landrace pigs were divided into a sham operation group(S group,n=6),ventricular fibrillation control group(VF-C group,n=8)and 654-1 intervention group(VF-I group,n=8).Hemodynamics was recorded at baseline,at recovery of spontaneous circulation(ROSC),and 1 h,2 h,4h and 6 h thereafter.Sidestream dark field(SDF)technology was used to evaluate and monitor the microcirculation flow index,total vessel density,perfusion vessel ratio,De-Backer score,and perfusion vessel density in animal viscera at various time points.Results After administration of 654-1 at 1.5 h post-ROSC,the hemodynamics in the VF-I group,as compared with the VF-C group,was significantly improved.The visceral microcirculation detected by SDF was also significantly improved in the VF-I group.As observed through electron microscopy,significantly less myocardial tissue injury was present in the VF-I group than the VF-C group.Conclusion Administration of 654-1 inhibited excessive inflammatory by improving the state of visceral microcirculation.
