目的了解供肝复流后细胞增殖周期的变化,明确药物预处理和缺血预处理对其的影响.方法建立大鼠三袖套法原位肝移植模型,观察移植肝细胞复流前后不同时间增殖细胞核抗原的表达情况;对供肝分别作药物预处理和缺血预处理,比较正常肝、预处...目的了解供肝复流后细胞增殖周期的变化,明确药物预处理和缺血预处理对其的影响.方法建立大鼠三袖套法原位肝移植模型,观察移植肝细胞复流前后不同时间增殖细胞核抗原的表达情况;对供肝分别作药物预处理和缺血预处理,比较正常肝、预处理供肝和未预处理供肝复流2 h 后的增殖细胞核抗原、肝酶谱及肝细胞凋亡状况.结果移植肝细胞复流2 h 后增殖细胞核抗原表达显著增高,12 h 后恢复正常水平;正常肝、药物预处理供肝、缺血预处理供肝、未预处理供肝复流2 h 后的增殖细胞核抗原表达和肝酶谱依次升高,PCNA(%):2.1±0.1,4.3±0.2,7.0±0.4,9.4±0.4,AST(nKat·L^(-1)):3.5±1.6,28.1±11.9,53.8±12.3,75.2±24.1,ALT(nKat·L^(-1)):2.8±2.7,46.1±17.6,61.7±22.9,90.5±30.1,LDH(nKat·L^(-1)):49.6±7.6,61.4±15.3,95.4±23.2,148.3±30.1.结论供肝复流后肝细胞 G_1期缩短至2 h 以内,整个细胞周期时间缩短至20 h 左右.正常肝、药物预处理供肝、缺血预处理供肝、未预处理供肝肝损害程度依次加重,整个细胞周期时间依次缩短.展开更多
Objective To establish a new method for analyzing the cell cycle in tumor which is a kind of cell cycle disease.Methods Mixtures of cyclin E and cyclin A antibodies were incubated with fixed MOLT-4 cells, and measur...Objective To establish a new method for analyzing the cell cycle in tumor which is a kind of cell cycle disease.Methods Mixtures of cyclin E and cyclin A antibodies were incubated with fixed MOLT-4 cells, and measured by flow cytometry.Results We developed a cyclin E+A/DNA flow cytometry analysis method, which may distinguish G0, early G1, late G1, S, G2 and M phase cells, rather than three phases in the DNA content histogram.Conclusion Cyclin E+A/DNA multiparameter flow cytometry can simultaneously differentiate in the same sample six cell groups: G0, early G1, late G1, S, G2 and M phase cells. It performed better than any other cell cycle analysis methods that we have used and has a definite cell biology foundation.展开更多
文摘目的了解供肝复流后细胞增殖周期的变化,明确药物预处理和缺血预处理对其的影响.方法建立大鼠三袖套法原位肝移植模型,观察移植肝细胞复流前后不同时间增殖细胞核抗原的表达情况;对供肝分别作药物预处理和缺血预处理,比较正常肝、预处理供肝和未预处理供肝复流2 h 后的增殖细胞核抗原、肝酶谱及肝细胞凋亡状况.结果移植肝细胞复流2 h 后增殖细胞核抗原表达显著增高,12 h 后恢复正常水平;正常肝、药物预处理供肝、缺血预处理供肝、未预处理供肝复流2 h 后的增殖细胞核抗原表达和肝酶谱依次升高,PCNA(%):2.1±0.1,4.3±0.2,7.0±0.4,9.4±0.4,AST(nKat·L^(-1)):3.5±1.6,28.1±11.9,53.8±12.3,75.2±24.1,ALT(nKat·L^(-1)):2.8±2.7,46.1±17.6,61.7±22.9,90.5±30.1,LDH(nKat·L^(-1)):49.6±7.6,61.4±15.3,95.4±23.2,148.3±30.1.结论供肝复流后肝细胞 G_1期缩短至2 h 以内,整个细胞周期时间缩短至20 h 左右.正常肝、药物预处理供肝、缺血预处理供肝、未预处理供肝肝损害程度依次加重,整个细胞周期时间依次缩短.
基金ThisworkwassupportedbyChinaStateKeyBasicResearchProgramGrant (No G19980 5 12 12 ) theNationalNaturalScienceFoundationofChina (No 396 70 2 6 5 +3 种基金39730 2 70 3972 5 0 2 7)grantsfromtheScienceFoundationofMinistryofHealth China (No 2 0 2 0)
文摘Objective To establish a new method for analyzing the cell cycle in tumor which is a kind of cell cycle disease.Methods Mixtures of cyclin E and cyclin A antibodies were incubated with fixed MOLT-4 cells, and measured by flow cytometry.Results We developed a cyclin E+A/DNA flow cytometry analysis method, which may distinguish G0, early G1, late G1, S, G2 and M phase cells, rather than three phases in the DNA content histogram.Conclusion Cyclin E+A/DNA multiparameter flow cytometry can simultaneously differentiate in the same sample six cell groups: G0, early G1, late G1, S, G2 and M phase cells. It performed better than any other cell cycle analysis methods that we have used and has a definite cell biology foundation.
