By studying the spectral properties of the underlying operator corresponding to the M/G/1 queueing model with optional second service we obtain that the time-dependent solution of the model strongly converges to its s...By studying the spectral properties of the underlying operator corresponding to the M/G/1 queueing model with optional second service we obtain that the time-dependent solution of the model strongly converges to its steady-state solution. We also show that the time-dependent queueing size at the departure point converges to the corresponding steady-state queueing size at the departure point.展开更多
为了建立并分析牡蛎致敏大鼠模型,利用牡蛎过敏原Cra g 1,通过灌胃和腹腔注射相结合的方式致敏雌性棕色挪威大鼠(BN大鼠)。观察各组BN大鼠过敏反应及体重、体温、脏器指数、血象指标变化;通过ELISA法检测抗体、组胺变化;通过苏木精-伊红...为了建立并分析牡蛎致敏大鼠模型,利用牡蛎过敏原Cra g 1,通过灌胃和腹腔注射相结合的方式致敏雌性棕色挪威大鼠(BN大鼠)。观察各组BN大鼠过敏反应及体重、体温、脏器指数、血象指标变化;通过ELISA法检测抗体、组胺变化;通过苏木精-伊红(HE)及甲苯胺蓝染色观察组织器官变化。结果显示,实验组动物均发生过敏反应,对照组无明显症状;实验组动物体重显著低于对照组,脏器指数显著高于对照组,血液中细胞数量发生变化;另外,致敏期间实验组抗体及组胺水平均高于对照组;染色结果表明实验组大鼠脏器出现明显的病变损伤,肠道肥大细胞脱颗粒现象严重。该研究获得了Cra g 1蛋白致敏血清,同时证明BN大鼠是良好的动物致敏模型,为研究食物过敏原致敏机制及其体内免疫调节提供较好的依据。展开更多
Objective:To identify the influence on radiosensitivity of lung glandular cancer cells when excisions repair cross-complementing group1(ERCC1) gene was silenced by targeted siR NA.Methods:siR NA which targeting to ERC...Objective:To identify the influence on radiosensitivity of lung glandular cancer cells when excisions repair cross-complementing group1(ERCC1) gene was silenced by targeted siR NA.Methods:siR NA which targeting to ERCC1 and control siR NA was designed and synthesized.The human lung glandular cancer SPC-A-1 cells was transfected.A total of 56 nude mice were divided into two groups,and two kinds of SPC-A-1 cells were transplanted to armpit of right forelimb,to establish the nude mice subcutaneous xenotransplanted tumor model of human lung glandular cancer cells.After the tumor was developed,the nude mice were randomly divided into four groups and accepted different doses of X-Ray radiation,then the change of tumor volume,survival time of mice in every group were recorded and the average lifetime was calculated.Twenty-one days later of X-ray experiment,two mice were taken and sacrificed in each group and the tumors organizations were stripped.The cell apoptosis rate and cell cycle distributions were obtained by FCM(flow cytometry).Results:The volume of tumor which ERCC1 gene was silenced was less than single irradiation group after X-ray irradiation,and the growth speed was slower and the lifetime of mice was lengthened as well(P<0.05).The cells apoptosis rate and the rate of G2/M cells which ERCC1 gene was silenced were higher than the same dose control group and the rate of G_1 cells were lower,which indicated that the cells could be stopped at G_2/M point,the cell proliferation was inhibited,the cell apoptosis was promoted and the radiation sensitivity was improved after the ERCC1 was silenced.Conclusions:The radiation sensitivity of lung glandular tumor could be improved after the ERCC1 gene was silenced by siR NA.展开更多
基金supported by the National Natural Science Foundation of China(11371303)Natural Science Foundation of Xinjiang(2012211A023)Science Foundation of Xinjiang University(XY110101)
文摘By studying the spectral properties of the underlying operator corresponding to the M/G/1 queueing model with optional second service we obtain that the time-dependent solution of the model strongly converges to its steady-state solution. We also show that the time-dependent queueing size at the departure point converges to the corresponding steady-state queueing size at the departure point.
文摘为了建立并分析牡蛎致敏大鼠模型,利用牡蛎过敏原Cra g 1,通过灌胃和腹腔注射相结合的方式致敏雌性棕色挪威大鼠(BN大鼠)。观察各组BN大鼠过敏反应及体重、体温、脏器指数、血象指标变化;通过ELISA法检测抗体、组胺变化;通过苏木精-伊红(HE)及甲苯胺蓝染色观察组织器官变化。结果显示,实验组动物均发生过敏反应,对照组无明显症状;实验组动物体重显著低于对照组,脏器指数显著高于对照组,血液中细胞数量发生变化;另外,致敏期间实验组抗体及组胺水平均高于对照组;染色结果表明实验组大鼠脏器出现明显的病变损伤,肠道肥大细胞脱颗粒现象严重。该研究获得了Cra g 1蛋白致敏血清,同时证明BN大鼠是良好的动物致敏模型,为研究食物过敏原致敏机制及其体内免疫调节提供较好的依据。
基金supported by Foundation and Frontier Issues of Science and Technology Department of Henan Province (NO.122300410066)
文摘Objective:To identify the influence on radiosensitivity of lung glandular cancer cells when excisions repair cross-complementing group1(ERCC1) gene was silenced by targeted siR NA.Methods:siR NA which targeting to ERCC1 and control siR NA was designed and synthesized.The human lung glandular cancer SPC-A-1 cells was transfected.A total of 56 nude mice were divided into two groups,and two kinds of SPC-A-1 cells were transplanted to armpit of right forelimb,to establish the nude mice subcutaneous xenotransplanted tumor model of human lung glandular cancer cells.After the tumor was developed,the nude mice were randomly divided into four groups and accepted different doses of X-Ray radiation,then the change of tumor volume,survival time of mice in every group were recorded and the average lifetime was calculated.Twenty-one days later of X-ray experiment,two mice were taken and sacrificed in each group and the tumors organizations were stripped.The cell apoptosis rate and cell cycle distributions were obtained by FCM(flow cytometry).Results:The volume of tumor which ERCC1 gene was silenced was less than single irradiation group after X-ray irradiation,and the growth speed was slower and the lifetime of mice was lengthened as well(P<0.05).The cells apoptosis rate and the rate of G2/M cells which ERCC1 gene was silenced were higher than the same dose control group and the rate of G_1 cells were lower,which indicated that the cells could be stopped at G_2/M point,the cell proliferation was inhibited,the cell apoptosis was promoted and the radiation sensitivity was improved after the ERCC1 was silenced.Conclusions:The radiation sensitivity of lung glandular tumor could be improved after the ERCC1 gene was silenced by siR NA.
