Objective： The aim of the study was to establish models of Hep-2 laryngeal cancer cell line of different oxygen supplying, trying to investigate the impact of normoxia, hypoxia, reoxygenation after hypoxia on apoptos...Objective： The aim of the study was to establish models of Hep-2 laryngeal cancer cell line of different oxygen supplying, trying to investigate the impact of normoxia, hypoxia, reoxygenation after hypoxia on apoptosis and expression of proteins HIF-1α and p53 to Hep-2 human laryngeal cancer cell line induced by ^60Co γ-ray. Methods： Human laryngeal cancer Hep-2 cells were divided into 3 groups： group A （normoxia）, group B （hypoxia）, and group C （reoxygenation after hypoxia）. All of the cells were exposed to 5 Gy dosage of γ-ray. Flow cytometry （FCM） was used tomeasure the protein levels of HIF-1α and p53 and to detect cell apoptosis. The protein levels of HIF-la and p53 were also determined by immunohistochemistry and Western blotting. The expression of HIF-la mRNA was determined by RT-PCR. Results： The protein levels of HIF-1α and p53 were evidently increased in group B compared to group A. The protein levels of HIF-1α and p53 in group C were lower compared to group B; the rate of apoptosis in group C was higher than that in group B. Conclusion： Hypoxia decreased the effect of apoptosis induced by ^60Co γ-ray in Hep-2 human laryngeal cancer cell line. The apoptosis pathway maybe related to some other genes or proteins but not p53 in the conditions of hypoxia and reoxygenation after hypoxia.展开更多
为了探讨替吉奥联合奥沙利铂对转移性三阴乳腺癌患者随机对照研究及对血清P53抗体(serum P53antibody,P53)、第十号染色体同源丢失性磷酸酶-张力蛋白基(phosphatase and tensin homolog deleted from chromosome ten,PTEN)的影响。将90...为了探讨替吉奥联合奥沙利铂对转移性三阴乳腺癌患者随机对照研究及对血清P53抗体(serum P53antibody,P53)、第十号染色体同源丢失性磷酸酶-张力蛋白基(phosphatase and tensin homolog deleted from chromosome ten,PTEN)的影响。将90例转移性三阴乳腺癌患者按系统随机化法分为对照组45例和观察组45例。对照组采用奥沙利铂135 mg/m^2+1 000 m L Glu,静脉滴注,每4周1次,行3个疗程的化疗。观察组在对照组的基础上加用替吉奥胶囊40~60 mg/次,2次/d,每4周1次进行治疗,行3个疗程的化疗。比较2组患者的治疗后的临床疗效、血清P53、PTEN及HIF-α水平及毒副作用。结果表明观察组的总有效率及控制率与对照组比较无明显差异(p>0.05),但观察组患者的稳定率(44.44%)明显高于对照组(22.22%)(p<0.05)。2组患者的P53、HIF-α指标与治疗前相比均明显降低(p<0.05),且观察组患者低于对照组(p<0.05);2组患者的PTEN水平与治疗前相比,均明显升高(p<0.05),且观察组高于对照组(p<0.05)。观察组患者不良反应发生率为11.11%与对照组的17.77%相比,无明显差异(p>0.05)。替吉奥联合奥沙利铂治疗转移性三阴乳腺癌疗效肯定,能改善患者血清P53、PTEN及HIF-α水平,且毒副反应小。展开更多
文摘Objective： The aim of the study was to establish models of Hep-2 laryngeal cancer cell line of different oxygen supplying, trying to investigate the impact of normoxia, hypoxia, reoxygenation after hypoxia on apoptosis and expression of proteins HIF-1α and p53 to Hep-2 human laryngeal cancer cell line induced by ^60Co γ-ray. Methods： Human laryngeal cancer Hep-2 cells were divided into 3 groups： group A （normoxia）, group B （hypoxia）, and group C （reoxygenation after hypoxia）. All of the cells were exposed to 5 Gy dosage of γ-ray. Flow cytometry （FCM） was used tomeasure the protein levels of HIF-1α and p53 and to detect cell apoptosis. The protein levels of HIF-la and p53 were also determined by immunohistochemistry and Western blotting. The expression of HIF-la mRNA was determined by RT-PCR. Results： The protein levels of HIF-1α and p53 were evidently increased in group B compared to group A. The protein levels of HIF-1α and p53 in group C were lower compared to group B; the rate of apoptosis in group C was higher than that in group B. Conclusion： Hypoxia decreased the effect of apoptosis induced by ^60Co γ-ray in Hep-2 human laryngeal cancer cell line. The apoptosis pathway maybe related to some other genes or proteins but not p53 in the conditions of hypoxia and reoxygenation after hypoxia.
文摘为了探讨替吉奥联合奥沙利铂对转移性三阴乳腺癌患者随机对照研究及对血清P53抗体(serum P53antibody,P53)、第十号染色体同源丢失性磷酸酶-张力蛋白基(phosphatase and tensin homolog deleted from chromosome ten,PTEN)的影响。将90例转移性三阴乳腺癌患者按系统随机化法分为对照组45例和观察组45例。对照组采用奥沙利铂135 mg/m^2+1 000 m L Glu,静脉滴注,每4周1次,行3个疗程的化疗。观察组在对照组的基础上加用替吉奥胶囊40~60 mg/次,2次/d,每4周1次进行治疗,行3个疗程的化疗。比较2组患者的治疗后的临床疗效、血清P53、PTEN及HIF-α水平及毒副作用。结果表明观察组的总有效率及控制率与对照组比较无明显差异(p>0.05),但观察组患者的稳定率(44.44%)明显高于对照组(22.22%)(p<0.05)。2组患者的P53、HIF-α指标与治疗前相比均明显降低(p<0.05),且观察组患者低于对照组(p<0.05);2组患者的PTEN水平与治疗前相比,均明显升高(p<0.05),且观察组高于对照组(p<0.05)。观察组患者不良反应发生率为11.11%与对照组的17.77%相比,无明显差异(p>0.05)。替吉奥联合奥沙利铂治疗转移性三阴乳腺癌疗效肯定,能改善患者血清P53、PTEN及HIF-α水平,且毒副反应小。
