OBJECTIVE To explore the protective effects of total triterpenoids extracts from Cyclocarya paliurus(Batal.)Iljinskaja on STZ-stimulated INS-1 cells through regulating of autophagy and apoptosis.METHODS INS-1cells wer...OBJECTIVE To explore the protective effects of total triterpenoids extracts from Cyclocarya paliurus(Batal.)Iljinskaja on STZ-stimulated INS-1 cells through regulating of autophagy and apoptosis.METHODS INS-1cells were cultured in media containing 3n M STZ and different doses of total triterpenoids extracts from Cyclocarya paliurus(Batal.)Iljinskaja.The proliferation of cells was examined by MTT assay,ROS content were detected by fluorescence enzyme label.The levels of superoxide dismutase(SOD),glutathione peroxidase(GSH-Px),hydrogen peroxidase(CAT),malondialdehyde(MDA)were also measured by colorimetry.The activities of caspase-3,9 were also observed by Caspase colorimetric assay kit in each group.The expressions of Bcl-2 m RNA and Bax m RNA were detected by Real time PCR,protein expression of LC3-Ⅱand PARP were detected by Western blotting.RESULTS Compared with the control group,total triterpenoids extracts from Cyclocarya paliurus(Batal.)Iljinskaja could promote the proliferation of INS-1 cells no matter with STZ or not when its concentration lower than 25μg·m L-1;but when its concentration higher than 100μg·m L-(1use individually)or 50μg·m L-1(combined use),total triterpenoids extracts from Cyclocarya paliurus(Batal.)Iljinskaja might significantly inhibite the growth of the cells whether STZ existed or not.Total triterpenoids extracts from Cyclocarya paliurus(Batal.)Iljinskaja(6.25,12.5,25μg·m L-1)might inhibit INS-1cell apoptosis,decrease intra-cellular ROS contents,improve the s upernatant liquid SOD,GSH-PX,CAT activities,decrease MDA level,promote INS-1 cell secreting insulin,decrease the protein expressions of autophagy protein LC3Ⅱand apoptosis regulating protein cleaved PARP protein,up-regulate the anti-apoptotic protein Bcl-2 m RNA expression,down-regulate the pro-apoptotic protein Bax m RNA expression and Bcl-2and Bax,reduce the activity of caspase-9 and caspase-3(P<0.05 or P<0.01).CONCLUSION Total triterpenoids extracts from Cyclocarya paliurus(Batal.)Iljinskaja has good protective effect on STZ-stimulated INS-1cells.It can inhibit STZ injured INS-1 cells to overproduce ROS production,enhance endogenous antioxidant enzymes(GSH-Px,SOD,CAT activities),reduce the expression of autophagy protein LC3Ⅱand apoptosisregulating protein cleaved PARP,up-reglute the antiapoptosis protein Bcl-2 expression,down-regulate the pro-apoptotic protein Bax expression,decrease the caspase-9 and caspase-3 activities,and improve the INS-1cell survival rate,and then play a protective effect on damaged INS-1 cells.展开更多
The hormone combinations and dark culture of the callus induction for Cyclocarya paliurus (Batal.) Iljinskaja leaves were optimized by an orthogonal experiment. The effects of hormones on callus proliferation were a...The hormone combinations and dark culture of the callus induction for Cyclocarya paliurus (Batal.) Iljinskaja leaves were optimized by an orthogonal experiment. The effects of hormones on callus proliferation were also studied. The results show that the optimum medium for callus induction of C. paliurus leaves was MS + 1.0 mg.L-1 6-BA + 0.5 mg.L-1 NAA + 1.0 mg·L-1 2,4-D. The combination of 6-BA and NAA significantly affected the induction of callus, while the effect of 2,4-D was less. The maximum rate of callus induction was 95.4%. A 10-day darkness period was beneficial for callus induction. The best proliferation medium was 1/4 DKW + 0.5 mg·L-1 6-BA + 1.0 mg·L-1 2,4-D.展开更多
Objective: This paper focused on the geographical discrimination of Cyclocarya paliurus tea for origin traceability based on multielement analysis by ICP-OES and chemometrics multivariate.Methods: In this study, eleve...Objective: This paper focused on the geographical discrimination of Cyclocarya paliurus tea for origin traceability based on multielement analysis by ICP-OES and chemometrics multivariate.Methods: In this study, eleven trace element concentrations were determined by ICP-OES and processed by multivariate statistical analysis.Results: Based on ANOVA, the mean concentrations of 10 elements except Co differed significantly among six origins. Pearson’s correlation analysis showed that 11 pairs of elements have a positive significant correlation and 12 pairs have a negative significant correlation. The geographical origins were effectively differentiated using the eleven elements combined with PCA. And the S-LDA model offered a 100%differentiation rate.Conclusion: The overall results suggested that the combination of multielement analysis by ICP-OES and chemometrics multivariate could trace the geographical origins of tea. And the paper can provide reference for quality control and quality evaluation of C. paliurus in the future.展开更多
The study on the element transference characteristics and element speciation in the extract of Cyclocarya paliurus(Batal.) Iljinskaja leaves was performed by FIA-ICP-AES on the basis of C-18 bonded silica gel column s...The study on the element transference characteristics and element speciation in the extract of Cyclocarya paliurus(Batal.) Iljinskaja leaves was performed by FIA-ICP-AES on the basis of C-18 bonded silica gel column separation and microwave digestion/extraction for sample treatment. Higher transfer ratio could be obtained by artificial gastric acid or with microwave extraction method. The contents of inorganic species and organic species of the four elements in the microwave extract at the temperature of 100℃ are as follows. Zn: (4. 46±0.13) μg/g and (8. 16±0. 15) μg/g; Mn: (35. 7±1.1) μg/g and (91. 2± 3.2μg/g); Mg: (156±9)μg/g and (513±11)μg/g; Fe: (3. 28±0.19)μg/g and (8. 43±1.15) μg/g, respectively.展开更多
目的:研究青钱柳多糖(polysaccharides isolated from Cyclocarya paliurus(Batal.)Iljinskjk,PCP)对人宫颈癌HeLa细胞和人脐带内皮细胞(HUVEC)生长的影响。方法:采用噻唑蓝(MTT)法,观察不同浓度、不同提取方法获得的PCP对HeLa细胞和HU...目的:研究青钱柳多糖(polysaccharides isolated from Cyclocarya paliurus(Batal.)Iljinskjk,PCP)对人宫颈癌HeLa细胞和人脐带内皮细胞(HUVEC)生长的影响。方法:采用噻唑蓝(MTT)法,观察不同浓度、不同提取方法获得的PCP对HeLa细胞和HUVEC细胞生长的影响。结果:PCP I、II在50、100、200、400μg/ml浓度条件下,均可极显著性抑制HeLa细胞生长(p<0.01)。PCP I、II对HUVEC细胞生长有一定影响,但增殖抑制率不高;在PCP抑癌作用最高的浓度处(200μg/ml),PCP对HUVEC细胞的生长没有影响。结论:PCP极显著性抑制HeLa细胞的生长;在P C P抑癌作用最高的浓度处,P C P对H U V E C细胞的生长没有影响。展开更多
基金The project supported by National Natural and Science Foundation of China(81341141)Yichang Qingqianliu Biotechnology Co.,Ltd.(SDHZ201602)Science and Technology Bureau of Yichang city(A15301-25)
文摘OBJECTIVE To explore the protective effects of total triterpenoids extracts from Cyclocarya paliurus(Batal.)Iljinskaja on STZ-stimulated INS-1 cells through regulating of autophagy and apoptosis.METHODS INS-1cells were cultured in media containing 3n M STZ and different doses of total triterpenoids extracts from Cyclocarya paliurus(Batal.)Iljinskaja.The proliferation of cells was examined by MTT assay,ROS content were detected by fluorescence enzyme label.The levels of superoxide dismutase(SOD),glutathione peroxidase(GSH-Px),hydrogen peroxidase(CAT),malondialdehyde(MDA)were also measured by colorimetry.The activities of caspase-3,9 were also observed by Caspase colorimetric assay kit in each group.The expressions of Bcl-2 m RNA and Bax m RNA were detected by Real time PCR,protein expression of LC3-Ⅱand PARP were detected by Western blotting.RESULTS Compared with the control group,total triterpenoids extracts from Cyclocarya paliurus(Batal.)Iljinskaja could promote the proliferation of INS-1 cells no matter with STZ or not when its concentration lower than 25μg·m L-1;but when its concentration higher than 100μg·m L-(1use individually)or 50μg·m L-1(combined use),total triterpenoids extracts from Cyclocarya paliurus(Batal.)Iljinskaja might significantly inhibite the growth of the cells whether STZ existed or not.Total triterpenoids extracts from Cyclocarya paliurus(Batal.)Iljinskaja(6.25,12.5,25μg·m L-1)might inhibit INS-1cell apoptosis,decrease intra-cellular ROS contents,improve the s upernatant liquid SOD,GSH-PX,CAT activities,decrease MDA level,promote INS-1 cell secreting insulin,decrease the protein expressions of autophagy protein LC3Ⅱand apoptosis regulating protein cleaved PARP protein,up-regulate the anti-apoptotic protein Bcl-2 m RNA expression,down-regulate the pro-apoptotic protein Bax m RNA expression and Bcl-2and Bax,reduce the activity of caspase-9 and caspase-3(P<0.05 or P<0.01).CONCLUSION Total triterpenoids extracts from Cyclocarya paliurus(Batal.)Iljinskaja has good protective effect on STZ-stimulated INS-1cells.It can inhibit STZ injured INS-1 cells to overproduce ROS production,enhance endogenous antioxidant enzymes(GSH-Px,SOD,CAT activities),reduce the expression of autophagy protein LC3Ⅱand apoptosisregulating protein cleaved PARP,up-reglute the antiapoptosis protein Bcl-2 expression,down-regulate the pro-apoptotic protein Bax expression,decrease the caspase-9 and caspase-3 activities,and improve the INS-1cell survival rate,and then play a protective effect on damaged INS-1 cells.
文摘The hormone combinations and dark culture of the callus induction for Cyclocarya paliurus (Batal.) Iljinskaja leaves were optimized by an orthogonal experiment. The effects of hormones on callus proliferation were also studied. The results show that the optimum medium for callus induction of C. paliurus leaves was MS + 1.0 mg.L-1 6-BA + 0.5 mg.L-1 NAA + 1.0 mg·L-1 2,4-D. The combination of 6-BA and NAA significantly affected the induction of callus, while the effect of 2,4-D was less. The maximum rate of callus induction was 95.4%. A 10-day darkness period was beneficial for callus induction. The best proliferation medium was 1/4 DKW + 0.5 mg·L-1 6-BA + 1.0 mg·L-1 2,4-D.
基金supported by the National Natural Science Foundation of China(No.81360631)Project of the Key Research and Development Program for Jiangxi Province(No.20203BBGL73218)。
文摘Objective: This paper focused on the geographical discrimination of Cyclocarya paliurus tea for origin traceability based on multielement analysis by ICP-OES and chemometrics multivariate.Methods: In this study, eleven trace element concentrations were determined by ICP-OES and processed by multivariate statistical analysis.Results: Based on ANOVA, the mean concentrations of 10 elements except Co differed significantly among six origins. Pearson’s correlation analysis showed that 11 pairs of elements have a positive significant correlation and 12 pairs have a negative significant correlation. The geographical origins were effectively differentiated using the eleven elements combined with PCA. And the S-LDA model offered a 100%differentiation rate.Conclusion: The overall results suggested that the combination of multielement analysis by ICP-OES and chemometrics multivariate could trace the geographical origins of tea. And the paper can provide reference for quality control and quality evaluation of C. paliurus in the future.
文摘The study on the element transference characteristics and element speciation in the extract of Cyclocarya paliurus(Batal.) Iljinskaja leaves was performed by FIA-ICP-AES on the basis of C-18 bonded silica gel column separation and microwave digestion/extraction for sample treatment. Higher transfer ratio could be obtained by artificial gastric acid or with microwave extraction method. The contents of inorganic species and organic species of the four elements in the microwave extract at the temperature of 100℃ are as follows. Zn: (4. 46±0.13) μg/g and (8. 16±0. 15) μg/g; Mn: (35. 7±1.1) μg/g and (91. 2± 3.2μg/g); Mg: (156±9)μg/g and (513±11)μg/g; Fe: (3. 28±0.19)μg/g and (8. 43±1.15) μg/g, respectively.
文摘目的:研究青钱柳多糖(polysaccharides isolated from Cyclocarya paliurus(Batal.)Iljinskjk,PCP)对人宫颈癌HeLa细胞和人脐带内皮细胞(HUVEC)生长的影响。方法:采用噻唑蓝(MTT)法,观察不同浓度、不同提取方法获得的PCP对HeLa细胞和HUVEC细胞生长的影响。结果:PCP I、II在50、100、200、400μg/ml浓度条件下,均可极显著性抑制HeLa细胞生长(p<0.01)。PCP I、II对HUVEC细胞生长有一定影响,但增殖抑制率不高;在PCP抑癌作用最高的浓度处(200μg/ml),PCP对HUVEC细胞的生长没有影响。结论:PCP极显著性抑制HeLa细胞的生长;在P C P抑癌作用最高的浓度处,P C P对H U V E C细胞的生长没有影响。