[Objectives] To establish a method for the determination of active components in toad skin. [Methods] HPLC method was used to determine the content of five active components (bufotalin, cinobufotalin, bufalin, cinobuf...[Objectives] To establish a method for the determination of active components in toad skin. [Methods] HPLC method was used to determine the content of five active components (bufotalin, cinobufotalin, bufalin, cinobufagin and resibufogenin) in toad skin. [Results] Chromatographic conditions are as follows: Agilent ZORBAX SB-C 18 chromatographic column was used;acetonitrile (A)-0.3% glacial acetic acid (B) gradient elution (0-15 min, 28%A-54%A;15-35 min, 54%A-54%A) was conducted;the flow rate was 0.6 mL/min;the detection wavelength was 296 nm;the column temperature was 30 ℃;the sample size was 10 μL. Under the above conditions, the determination method of the five components can be established at one time. [Conclusions] The method was stable and reliable, and can provide experimental basis for the development and utilization of active ingredients in toad skin.展开更多
目的:探讨蟾皮对肾癌细胞GRC-1凋亡的诱导作用及Fas、Fas配体(Fas Linand,FasL)和bcl-2表达的影响,了解其抑制肿瘤的分子生物学机制。方法:用末端脱氧核苷酰转移酶法(TdT-mediated dUTP nick end labeling,TINEL)流式细胞技术检测细胞凋...目的:探讨蟾皮对肾癌细胞GRC-1凋亡的诱导作用及Fas、Fas配体(Fas Linand,FasL)和bcl-2表达的影响,了解其抑制肿瘤的分子生物学机制。方法:用末端脱氧核苷酰转移酶法(TdT-mediated dUTP nick end labeling,TINEL)流式细胞技术检测细胞凋亡,免疫细胞化学检测Fas、FasL和bcl-2的表达。结果:当蟾皮提取液浓度分别为0μg/ml,0.01μg/ml,0.1μg/ml,1μg/ml,10μg/ml时,GRC-1的凋亡百分比分别为0.97％,1.15％,1.02％,7.06％,20.32％。随着药物浓度的增加,Fas表达增强,FasL和bcl-2表达减弱。结论:蟾皮抑制肾癌细胞的分子生物学机制之一为促进Fas表达,抑制FasL及bcl-2的表达,诱导癌细胞凋亡。展开更多
基金Supported by the Self-funded Research Project of Administration of Traditional Chinese Medicine of Guangxi Zhuang Autonomous Region(GXZYZ20210078)Key Research and Development Project of Guangxi Science and Technology Department(Guike AB19110003).
文摘[Objectives] To establish a method for the determination of active components in toad skin. [Methods] HPLC method was used to determine the content of five active components (bufotalin, cinobufotalin, bufalin, cinobufagin and resibufogenin) in toad skin. [Results] Chromatographic conditions are as follows: Agilent ZORBAX SB-C 18 chromatographic column was used;acetonitrile (A)-0.3% glacial acetic acid (B) gradient elution (0-15 min, 28%A-54%A;15-35 min, 54%A-54%A) was conducted;the flow rate was 0.6 mL/min;the detection wavelength was 296 nm;the column temperature was 30 ℃;the sample size was 10 μL. Under the above conditions, the determination method of the five components can be established at one time. [Conclusions] The method was stable and reliable, and can provide experimental basis for the development and utilization of active ingredients in toad skin.
文摘目的:探讨蟾皮对肾癌细胞GRC-1凋亡的诱导作用及Fas、Fas配体(Fas Linand,FasL)和bcl-2表达的影响,了解其抑制肿瘤的分子生物学机制。方法:用末端脱氧核苷酰转移酶法(TdT-mediated dUTP nick end labeling,TINEL)流式细胞技术检测细胞凋亡,免疫细胞化学检测Fas、FasL和bcl-2的表达。结果:当蟾皮提取液浓度分别为0μg/ml,0.01μg/ml,0.1μg/ml,1μg/ml,10μg/ml时,GRC-1的凋亡百分比分别为0.97％,1.15％,1.02％,7.06％,20.32％。随着药物浓度的增加,Fas表达增强,FasL和bcl-2表达减弱。结论:蟾皮抑制肾癌细胞的分子生物学机制之一为促进Fas表达,抑制FasL及bcl-2的表达,诱导癌细胞凋亡。
