A low cost,rapid and sensitive preparation method of silica gel supported ionic liquid(SGSIL)combined with matrix solid phase dispersion(MSPD)followed by high performance liquid chromatography(HPLC)with ultraviolet de...A low cost,rapid and sensitive preparation method of silica gel supported ionic liquid(SGSIL)combined with matrix solid phase dispersion(MSPD)followed by high performance liquid chromatography(HPLC)with ultraviolet detection(UV)is proposed,and it was applied to determine the seven active compounds in Salvia Miltiorrhiza herb.SGSIL and ionic liquid[BMIM]BF4 were used as the adsorbent and the green elution reagent in the MSPD procedure.Several extraction conditions including type of filler and elution solvent,the volume of elution solvent,material liquid ratio were optimized.Under the optimum conditions,the SGSIL-MSPD-HPLC method showed a low limit of detection(LOD,S/N=3)of 0.0122-0.8788μg/mL for standard solution,limit of quantification(LOQ,S/N=10)of 0.0406-2.9292μg/mL for standard solution,wide linear range from 1.56 to 2000μg/mL for all compounds for standard solution,correlation coefficients(r)of more than 0.9990,acceptable reproducibility(relative standard deviations,RSDs<3.54%),and precision of RSDs<3.36%for intra-day,RSDs<3.50%for inter-day.The satisfactory recoveries ranged from 96.4 to 102.5,with RSDs less than 3.45%.The developed SGSIL-MSPD method is easier and more suitable for the determination of the seven active compounds in Salvia Miltiorrhiza herb than the traditional ultrasonic extraction.It was an effective and efficient method for the extraction and quantification of the seven active compounds in traditional Chinese herbal samples.展开更多
目的探讨链霉素(streptomyc in,SM)耳中毒过程中豚鼠耳蜗毛细胞凋亡及碱性成纤维细胞生长因子(basic fibro-b last growth factor,bFGF)表达,以及丹参注射液(salvia m ilti-orrh iza in jection,DS)的拮抗作用。方法40只豚鼠随机分为4组...目的探讨链霉素(streptomyc in,SM)耳中毒过程中豚鼠耳蜗毛细胞凋亡及碱性成纤维细胞生长因子(basic fibro-b last growth factor,bFGF)表达,以及丹参注射液(salvia m ilti-orrh iza in jection,DS)的拮抗作用。方法40只豚鼠随机分为4组,利用TUNEL标记技术、SABC免疫组化方法及图像分析技术,结合听性脑干反应(aud itory brainstem response,ABR)测试,观察耳毒性损伤过程中凋亡情况及bFGF的表达。结果用药10 d后,SM组ABR阈值明显升高,DS+SM组ABR阈值明显低于SM组,差异有显著性(P<0.01)。SM组耳蜗毛细胞凋亡染色呈强阳性表达,DS+SM组呈弱阳性表达。免疫组化结果表明,SM组bFGF的表达明显低于DS+SM组。结论SM耳中毒时ABR阈值升高,凋亡表达增强,bFGF表达稍有增强。DS能有效的降低SM所致的ABR阈值升高,并抑制凋亡的发生,同时增强bFGF的表达,从而减轻SM的耳毒性损伤,提示DS对SM耳毒性损伤有拮抗作用,这一拮抗作用可能与bFGF表达增强有关。展开更多
基金This research was supported by Special Research Fund for Young Doctors of Qiqihar Medical University(QMSI2020B-03,hosted by Wenjing Li).
文摘A low cost,rapid and sensitive preparation method of silica gel supported ionic liquid(SGSIL)combined with matrix solid phase dispersion(MSPD)followed by high performance liquid chromatography(HPLC)with ultraviolet detection(UV)is proposed,and it was applied to determine the seven active compounds in Salvia Miltiorrhiza herb.SGSIL and ionic liquid[BMIM]BF4 were used as the adsorbent and the green elution reagent in the MSPD procedure.Several extraction conditions including type of filler and elution solvent,the volume of elution solvent,material liquid ratio were optimized.Under the optimum conditions,the SGSIL-MSPD-HPLC method showed a low limit of detection(LOD,S/N=3)of 0.0122-0.8788μg/mL for standard solution,limit of quantification(LOQ,S/N=10)of 0.0406-2.9292μg/mL for standard solution,wide linear range from 1.56 to 2000μg/mL for all compounds for standard solution,correlation coefficients(r)of more than 0.9990,acceptable reproducibility(relative standard deviations,RSDs<3.54%),and precision of RSDs<3.36%for intra-day,RSDs<3.50%for inter-day.The satisfactory recoveries ranged from 96.4 to 102.5,with RSDs less than 3.45%.The developed SGSIL-MSPD method is easier and more suitable for the determination of the seven active compounds in Salvia Miltiorrhiza herb than the traditional ultrasonic extraction.It was an effective and efficient method for the extraction and quantification of the seven active compounds in traditional Chinese herbal samples.
文摘目的探讨链霉素(streptomyc in,SM)耳中毒过程中豚鼠耳蜗毛细胞凋亡及碱性成纤维细胞生长因子(basic fibro-b last growth factor,bFGF)表达,以及丹参注射液(salvia m ilti-orrh iza in jection,DS)的拮抗作用。方法40只豚鼠随机分为4组,利用TUNEL标记技术、SABC免疫组化方法及图像分析技术,结合听性脑干反应(aud itory brainstem response,ABR)测试,观察耳毒性损伤过程中凋亡情况及bFGF的表达。结果用药10 d后,SM组ABR阈值明显升高,DS+SM组ABR阈值明显低于SM组,差异有显著性(P<0.01)。SM组耳蜗毛细胞凋亡染色呈强阳性表达,DS+SM组呈弱阳性表达。免疫组化结果表明,SM组bFGF的表达明显低于DS+SM组。结论SM耳中毒时ABR阈值升高,凋亡表达增强,bFGF表达稍有增强。DS能有效的降低SM所致的ABR阈值升高,并抑制凋亡的发生,同时增强bFGF的表达,从而减轻SM的耳毒性损伤,提示DS对SM耳毒性损伤有拮抗作用,这一拮抗作用可能与bFGF表达增强有关。
