体外模拟气腹环境对胃癌细胞增殖凋亡的影响

Effects of Simulated Pneumoperitoneum on Proliferation and Apoptosis of Gastric Cancer Cells

目的通过体外模拟气腹环境,观察二氧化碳(CO2)和氦气(He)在不同压力下对胃癌细胞MKN-45增殖、凋亡的影响。方法实验分为对照组、CO2组和He组,其中CO2组和He组又按照压力不同分为0、5、10、15mmHg组(作用时间均为4h)。细胞在密闭培养箱内经不同压力CO2或He作用4h后用血气分析仪检测培养液pH值;MTT法检测细胞增殖情况;流式细胞仪观察细胞凋亡指数变化;AnnexinV-FITC/PI双标染色、流式细胞仪测定凋亡细胞比例。结果处理结束后即刻检测,CO2组细胞培养液呈弱酸性,He组细胞培养液呈弱碱性。MTT法检测细胞增殖变化,CO2组0、5、10mmHg组OD值与对照组比较无明显差异(P>0.05),15mmHg组OD值与对照组比较在前3天无明显差异(P>0.05),在4~7天OD值明显低于对照组(P<0.01)。而在He组,不同压力组细胞增殖活性与对照组比较无明显差异(P>0.05)。在CO2环境下,0、5mmHg组细胞凋亡指数与对照组比较无明显差异(P>0.05),而10、15mmHg组明显大于正常对照组(P<0.01)。0、5mmHg组细胞凋亡比例与对照组比较无显著差异(P>0.05...

Objective To investigate the effects of CO2 and helium insufflation administered at different pressures on the proliferation and apoptosis of cultured human gastric cancer cells, MKN-45. Methods The gastric cancer cells MKN-45 were divided into control, CO2, and helium groups. In CO2 and helium groups, the cells were exposed to CO2 or helium at different pressures (0, 5, 10, and 15 mm Hg) for 4 hours. And then pH of each culture media in the three groups was analyzed, the proliferation of the cells was dete...