采用反相和阳离子交换双重保留机理,无需添加离子对和衍生化试剂,建立了18种游离氨基酸的液相色谱-质谱联用直接分析方法。采用高效液相色谱-三重四极杆串联质谱(HPLC-MS/MS)系统,使用OSAKA SODA CAPCELL PAK CR 1∶4 (150 mm×2.1 ...采用反相和阳离子交换双重保留机理,无需添加离子对和衍生化试剂,建立了18种游离氨基酸的液相色谱-质谱联用直接分析方法。采用高效液相色谱-三重四极杆串联质谱(HPLC-MS/MS)系统,使用OSAKA SODA CAPCELL PAK CR 1∶4 (150 mm×2.1 mm, 5μm; SCX∶C_(18)=1∶4)色谱柱,以0.1%甲酸(A)-乙腈(含0.1%甲酸)(B)-50 mmol/L甲酸铵(C)为流动相进行三元梯度洗脱,对18种氨基酸进行分离检测,可得到良好的分析结果。色谱峰面积精密度(RSD)范围为0.7%～5.9%;标准曲线线性关系良好(R^2=0.993～0.999);对SD大鼠血清和尿液样品加样回收率范围为92.2%～113.6%。本方法流动相条件简单,灵敏度高,可用于血清和尿液中游离氨基酸分析,为生物样品中氨基酸检测或其它复杂基质中氨基酸的检测提供了新的方法和思路。展开更多
Objective:To compare the analgesic effect of Jin Ling Zi Powder(JLZ)and its two single herbs.Methods:The hot plate method was used to induce pain.Totally 36 mice were randomly divided into 6 groups by a complete rando...Objective:To compare the analgesic effect of Jin Ling Zi Powder(JLZ)and its two single herbs.Methods:The hot plate method was used to induce pain.Totally 36 mice were randomly divided into 6 groups by a complete random design,including control,model,aspirin(ASP,0.14 g/kg body weight),JLZ(14 g/kg body weight),Corydalis yanhusuo(YHS,14 g/kg body weight),and Toosendan Fructus(TF,14 g/kg body weight)groups,6 mice in each group.The mice in the control and model groups were given the same volume of saline,daily for 2 consecutive weeks.At 30,60,90,and 120 min after the last administration,the pain threshold of mice in each group was measured,and the improvement rate of pain threshold was calculated.Serum endogenous metabolites were analyzed by gas chromatography–mass spectrometry(GC–MS).Results:There was no statistical difference in pain threshold among groups before administration(P>0.05).After 2 weeks of administration,compared with the model group,the pain threshold in JLZ,YHS,TF and ASP groups were increased to varying degrees(P<0.05).JLZ had the best analgesic effect and was superior to YHS and TF groups.A total of 14 potential biomarkers were screened in serum data analysis and potential biomarkers levels were all reversed to different degrees after the treatment with JLZ and its single herbs.These potential biomarkers were mainly related to glyoxylate and dicarboxylate metabolism,glycine,serine and threonine metabolism,valine,leucine and isoleucine biosynthesis,aminoacyl-t RNA biosynthesis and inositol phosphate metabolism.Conclusions:The analgesic mechanism of JLZ and YHS was mainly due to the combination of glycine and its receptor,producing post-synaptic potential,reducing the excitability of neurons,and weakening the afferent effect of painful information.展开更多
文摘采用反相和阳离子交换双重保留机理,无需添加离子对和衍生化试剂,建立了18种游离氨基酸的液相色谱-质谱联用直接分析方法。采用高效液相色谱-三重四极杆串联质谱(HPLC-MS/MS)系统,使用OSAKA SODA CAPCELL PAK CR 1∶4 (150 mm×2.1 mm, 5μm; SCX∶C_(18)=1∶4)色谱柱,以0.1%甲酸(A)-乙腈(含0.1%甲酸)(B)-50 mmol/L甲酸铵(C)为流动相进行三元梯度洗脱,对18种氨基酸进行分离检测,可得到良好的分析结果。色谱峰面积精密度(RSD)范围为0.7%～5.9%;标准曲线线性关系良好(R^2=0.993～0.999);对SD大鼠血清和尿液样品加样回收率范围为92.2%～113.6%。本方法流动相条件简单,灵敏度高,可用于血清和尿液中游离氨基酸分析,为生物样品中氨基酸检测或其它复杂基质中氨基酸的检测提供了新的方法和思路。
文摘Objective:To compare the analgesic effect of Jin Ling Zi Powder(JLZ)and its two single herbs.Methods:The hot plate method was used to induce pain.Totally 36 mice were randomly divided into 6 groups by a complete random design,including control,model,aspirin(ASP,0.14 g/kg body weight),JLZ(14 g/kg body weight),Corydalis yanhusuo(YHS,14 g/kg body weight),and Toosendan Fructus(TF,14 g/kg body weight)groups,6 mice in each group.The mice in the control and model groups were given the same volume of saline,daily for 2 consecutive weeks.At 30,60,90,and 120 min after the last administration,the pain threshold of mice in each group was measured,and the improvement rate of pain threshold was calculated.Serum endogenous metabolites were analyzed by gas chromatography–mass spectrometry(GC–MS).Results:There was no statistical difference in pain threshold among groups before administration(P>0.05).After 2 weeks of administration,compared with the model group,the pain threshold in JLZ,YHS,TF and ASP groups were increased to varying degrees(P<0.05).JLZ had the best analgesic effect and was superior to YHS and TF groups.A total of 14 potential biomarkers were screened in serum data analysis and potential biomarkers levels were all reversed to different degrees after the treatment with JLZ and its single herbs.These potential biomarkers were mainly related to glyoxylate and dicarboxylate metabolism,glycine,serine and threonine metabolism,valine,leucine and isoleucine biosynthesis,aminoacyl-t RNA biosynthesis and inositol phosphate metabolism.Conclusions:The analgesic mechanism of JLZ and YHS was mainly due to the combination of glycine and its receptor,producing post-synaptic potential,reducing the excitability of neurons,and weakening the afferent effect of painful information.
