丙谷胺和NS-398协同诱导胃癌细胞凋亡的研究

目的:探讨胃泌素受体拮抗剂丙谷胺和特异性环氧化酶(COX)-2抑制剂NS-398对人胃腺癌细胞株MKN-45细胞凋亡的调控作用及其机制。方法:MKN-45细胞常规培养于含10%胎牛血清的RPMI1640培养液中,待细胞长至亚单层后加丙谷胺(5mmol/L)和(或)NS-398(0.01mmol/L),连续培养48h。采用流式细胞仪检测细胞凋亡率,RT-PCR法测定凋亡抑制基因bcl-2mRNA表达。结果:丙谷胺组、NS-398组和联合用药组的细胞凋亡率分别为(24.72±3.19)%、(26.69±3.35)%和(36.11±4.57)%,显著高于对照组(1.57±0.55)%(P<0.01),联合用药组的细胞凋亡率明显高于丙谷胺或NS-398单一用药组[(36.11±4.57)%vs(24.72±3.19)%和(26.69±3.35)%,P<0.05]。丙谷胺和NS-398显著下调bcl-2mRNA在MKN-45细胞的表达(P<0.05)。结论:丙谷胺、NS-398通过下调胃癌细胞bcl-2基因表达而诱导细胞凋亡,两者联合使用具有协同作用。     

COX-2选择性抑制剂联合奥沙利铂对结肠癌HCT-8细胞增殖和凋亡的影响

目的观察环氧合酶-2(COX-2)选择性抑制剂NS-398联合奥沙利铂(L-OHP)对结肠癌HCT-8细胞增殖和凋亡的影响,比较NS-398联合L-OHP与单独应用L-OHP对结肠癌HCT-8细胞的杀伤效应。方法 CCK-8法检测不同浓度的L-OHP(1.25、2.50、5.00、10.00及20.00μmol/L)单独作用及L-OHP联合NS-398(20.00及80.00μmol/L)作用HCT-8细胞24 h的细胞增殖抑制率。分别应用流式细胞术检测细胞早期凋亡率;Hoechst33258染色观察细胞凋亡形态学改变;分光光度法检测Caspase-3的活性。结果细胞增殖抑制实验表明L-OHP、NS-398对HCT-8细胞有剂量依赖性抑制增殖作用(P<0.05)。NS-398联合L-OHP用药组细胞增殖抑制率明显高于同浓度L-OHP单用组,且随着添加的NS-398剂量的增加而增加,联合用药组对HCT-8细胞的诱导凋亡效应明显高于L-OHP单药组,二者具有协同效应。两药均能提高Caspase-3的活性,联合用药组中Caspase-3的活性显著高于L-OHP组和NS-398组(P<0.01)。结论 NS-398和L-OHP均能抑制HCT-8细胞的增殖及诱导凋亡,NS-398能够显著增强L-OHP的癌细胞增殖抑制及诱导凋亡作用。     

奥曲肽联合特异性COX-2抑制剂对肝癌细胞的抑制作用

目的:研究特异性环氧化酶-2(COX-2)抑制剂NS-398和生长抑素类似物奥曲肽联合使用对人肝癌细胞系SMMC-7721增殖、凋亡的影响。方法:采用四氮唑盐比色法(MTT法)观察细胞增殖活力改变,流式细胞仪检测细胞凋亡百分率。结果:(1)MTT法显示NS-398和奥曲肽均在一定范围内呈浓度和时间依赖性地抑制SMMC-7721细胞的增殖;联合用药组抑制率显著高于单用NS-398或奥曲肽组(P<0.01),金正均方法显示q>1.15,提示两药联合应用有协同抑制肝癌细胞增殖效应,并随着作用时间延长而增强。(2)流式细胞仪测定显示,NS-398、奥曲肽和两药联合作用于SMMC-7721细胞24 h后,联合用药组细胞凋亡率显著高于单一用药组(P<0.01)。结论:NS-398和奥曲肽呈剂量、时间依赖性地抑制SMMC-7721细胞增殖,促进SMMC-7721细胞凋亡,两者联合应用具有协同作用。     

NS-398协同顺铂对人肺腺癌细胞生长影响的机制研究

目的 明确COX-2抑制剂NS-398对顺铂肺腺癌细胞增殖抑制作用的影响,探讨NS-398与顺铂的联合抑制肺腺癌细胞增殖的作用机制.方法 采用MTT比色法检测NS-398和顺铂联合作用对肺腺癌细胞增殖的影响,荧光染色法(吖啶橙和溴化乙啶)和流式细胞法观察肺腺癌细胞凋亡凋亡率和细胞周期的改变,二维聚丙烯酰胺凝胶电泳分离NS-398和顺铂联合作用肺腺癌细胞的蛋白质,质谱分析法(MOL-DI-TOF-MS)和数据库查询鉴定其中部分差异蛋白质.结果 NS-398对顺铂IC50降低的百分率在43.34%～69.61%之间,两药联合作用为轻度协同作用～协同作用;NS-398与顺铂联合组作用24和48 h诱导肺腺癌细胞的凋亡率增高.NS-398与顺铂联合组表达量下调的差异蛋白点为22个,表达量上调蛋白点为2个,只在NS-398与顺铂联合组出现的蛋白点25个,NS-398与顺铂联合组消失的蛋白点17个.选择其中17个表达量下调蛋白点、2个表达量上调蛋白点进行质谱鉴定,所鉴定的差异蛋白质中部分为细胞骨架蛋白,部分为与细胞增殖和凋亡相关的蛋白,部分为细胞代谢途径相关酶.结论 NS-398可以增强顺铂对肺腺癌细胞增殖的抑制作用,两种药物具有协同作用,肺腺癌细胞凋亡作用的增强可能参与了NS-398与顺铂协同抑制肺腺癌细胞增殖的作用机制.热休克蛋白90和磷酸丙糖异构酶可能参与NS-398对顺铂肺腺癌细胞增殖抑制作用的增强.     

选择性环氧化酶-2抑制剂NS-398抗结肠癌机制及对5-氟尿嘧啶化疗的辅助作用

目的 研究选择性环氧化酶-2(COX-2)抑制剂NS-398的抗结肠癌作用机制及其在5-氟尿嘧啶(5-Fu)化疗中的辅助作用。方法 (1)用逆转录-聚合酶链反应(RT—PCR)检测结肠癌HT-29、SW480细胞COX-2 mRNA表达后,将NS-398作用于两株细胞,用ELISA法测定前列腺素E2(PGE2)水平。(2)将NS-398、5-Fu、NS-398 5-Fu分别作用于两株细胞,24、48和72h后用MTT法检测细胞增殖状态。以流式细胞技术观察药物对细胞凋亡的影响。结果 (1)HT-29细胞中COX-2 mRNA呈高表达,NS-398作用后PGE2表达水平明显降低;SW480细胞中COX-2 mRNA表达呈阴性,NS-398作用后PGE2水平无明显变化。(2)NS-398、5-Fu呈剂量依赖性方式抑制结肠癌细胞增殖,诱导其凋亡;NS-398 5-Fu抗增殖的作用较单一用药时更明显,而凋亡诱导作用与单一用药差异无显著意义。结论 选择性COX-2抑制剂NS-398具有抗结肠癌作用;NS-398抗结肠癌作用可能不依赖于COX-2和PGE2的表达水平;NS-398与5-Fu具有协同的抗增殖作用。     

顺铂联合COX-2选择性抑制剂NS-398对食管癌Eca-109细胞增殖和凋亡的影响

目的 体外观察顺铂(diamminedichloroplatinum, DDP)以及DDP联合环氧合酶-2(cyclooxygenase, COX-2)选择性抑制剂NS-398对人食管癌Eca-109细胞增殖和凋亡的影响,比较单独应用DDP与DDP联合NS-398应用于食管癌Eca-109细胞的抗肿瘤效应.方法 CCK-8法检测不同浓度的DDP(1.25、2.50、5.00、10.00、20.00 mg/L)单独作用及DDP联合NS-398(1.00、10.00 μmol/L)作用Eca-109细胞24 h的细胞增殖抑制率.琼脂糖凝胶电泳技术检测DDP(1.25、2.50、5.00 mg/L)单用及联合NS-398(1.00、10.00、80.00 μmol/L)作用Eca-109细胞24 h和48 h的DNA Ladder出现情况.透射电镜观察DDP单用以及联合NS-398作用于Eca-109细胞24 h超微结构的变化.药物未处理组作为对照组.结果 细胞增殖抑制实验表明顺铂、NS-398对Ec-109细胞有剂量依赖性抑制增殖作用(P<0.05).顺铂联合NS-398用药组细胞增殖抑制率明显高于同浓度顺铂单用组,且随添加的NS-398的剂量的增加而增加,DDP联合NS-398用药组对Ec-109细胞的增殖抑制效应和诱导凋亡效应明显高于DDP单药组,二者具有协同效应.结论 与DDP单用相比,添加低剂量NS-398能够增强DDP对Eca-109细胞的增殖抑制效应和诱导凋亡效应.     

DHA和NS-398联合对人胆管癌QBC939细胞的抑制作用

目的 研究二十二碳六烯酸(docosahexaenoic acid,DHA)和选择性环氧合酶-2(cyclooxygenase-2,COX-2)抑制剂NS-398联合对人胆管癌细胞QBC939的抑制作用。 方法 体外培养人胆管癌QBC939细胞株,分别设立DHA浓度组、NS-398浓度组、二者联合组和空白对照组,即将0、15、30、45、60、75 μg/ml浓度的DHA和0、25、50、100、150、200 μmol/L浓度的NS-398分别联合作用于胆管癌QBC939细胞;应用CCK8法检测其分别对QBC939细胞生长的相对抑制率;采用流式细胞术检测QBC939细胞的凋亡情况;应用Transwell小室检测QBC939细胞的体外侵袭情况。 结果 DHA和NS-398在体外均能够单独抑制QBC939细胞生长,45 μg/ml的DHA联合100 μmol/L的NS-398经24 h作用后,细胞生长抑制率达到90%,实验组与DHA浓度组、NS-398浓度组和空白组差异均有统计学意义(P<0.05),继续增加2种药物浓度,细胞生长抑制率变化不明显;流式细胞术显示DHA和NS-398联合能明显促进QBC939细胞早期凋亡;15 μg/ml的DHA联合50 μmol/L的NS-398经24 h作用后,对胆管癌细胞生长无明显抑制作用,但QBC939的体外侵袭能力明显降低,与对照组相比差异有统计学意义(P<0.01)。 结论 DHA和NS-398联合能明显抑制胆管癌QBC939细胞生长,促进胆管癌细胞早期凋亡,抑制胆管癌细胞的侵袭,二者联合对胆管癌QBC939细胞生长的抑制作用可能是通过促进细胞早期凋亡实现的。      

选择性环氧合酶-2抑制剂NS-398下调K562/ADM细胞MDR1/P-gp表达

目的 探讨选择性环氧合酶-2(COX-2)抑制剂NS-398对白血病多药耐药K562/ADM细胞P-糖蛋白(P-gp)表达的影响.方法 以细胞K562/ADM为NS-398作用的靶细胞,MTT法检测细胞增殖活性;逆转录-聚合酶链反应(RT-PCR)检测多药耐药基因(MDRl)mRNA的表达;流式细胞仪(FCM)测定P-gp蛋白表达水平.结果 NS-398显著抑制K562/ADM细胞增殖,呈时间、剂量正相关效应;下调K562/ADM细胞MDRl基因表达并抑制P-gp合成,呈明显的剂量依赖关系.结论 COX-2抑制剂NS-398可在一定时间和剂量范围抑制白血病多药耐药K562/ADM细胞MDRl/P-gp表达,并能抑制K562/ADM多药耐药细胞增值.     

环氧合酶-2选择性抑制剂对乳腺癌细胞株生长及凋亡的影响

目的观察环氧合酶-2(COX-2)的特异性抑制剂NS-398对乳腺癌MCF-7细胞的生长抑制和凋亡作用,及其对阿霉素(ADM)诱导的MCF-7细胞凋亡作用的影响。方法应用四甲基偶氮唑蓝(MTT)比色法分析NS-398对MCF-7细胞的生长抑制作用,进一步用NS-398和ADM单独及联合作用于MCF-7细胞,流式细胞术检测细胞的凋亡,免疫印迹法检测凋亡相关蛋白Bcl-2、Pax的表达。结果40μg／ml的NS-398就可抑制MCF-7细胞生长、诱导其凋亡,下调Bcl-2蛋白表达;和ADM联用凋亡率显著增高。结论NS-398可抑制MCF-7细胞生长、诱导其凋亡,并且和阿霉素有协同作用,其诱导凋亡与Bcl-2表达下调有关。     

三氧化二砷对前列腺癌细胞PC-3凋亡抑制蛋白XIAP表达的影响

[目的]探讨三氧化二砷(As2O3)对前列腺癌细胞株PC-3细胞增殖、细胞凋亡及X染色体连锁凋亡抑制蛋白(XIAP)表达的影响.[方法]取对数生长期PC-3细胞,分别经0.5,1.0,2.0μmol/L As2O3处理,采用四甲基偶氮唑蓝比色法检测细胞生长抑制作用;流式细胞仪检测细胞凋亡率;蛋白质印迹法及实时荧光定量PCR检测XIAP蛋白表达及XIAP mRNA表达的变化.[结果]0.5,1.0,2.0μmol/LAs2O3均可抑制PC-3细胞增殖,在处理24,48,72h后,细胞生长抑制率间差异具有统计学意义(P<0.01).检测0.5,1.0,2.0μmol/L As2O3处理48h的PC-3细胞株细胞凋亡率分别为11.47%±1.81%,38.47%±1.60%,58.93%±3.35%,相比较差异具有统计学意义(P<0.01).As2O3处理48h时0.5,1.0,2.0μmol/L As2O3组的XIAP mRNA表达水平分别为0.67±0.12,0.25±0.15,0.03±0.01,各组间差异均具有统计学意义(P<0.05).[结论]As2O3可抑制PC-3细胞增殖,诱导细胞凋亡,此作用可能与As2O3抑制PC-3细胞XIAP基因的表达有关联.     

汉防己甲素联合紫杉醇对胃癌细胞增殖和凋亡的影响

目的:研究汉防己甲素(tetrandrine,TET)联合化疗药物紫杉醇(paclitaxel,PTX)对人胃癌细胞增殖和凋亡的影响?方法:MKN-45细胞常规培养于RPMI-1640培养液中,细胞长至亚单层后加TET和 (或)PTX,连续培养48 h?四甲基偶氮唑盐(MTT)比色法分析细胞增殖情况,DAPI染色和流式细胞仪检测细胞凋亡情况?结果:TET和PTX单药或联合均呈剂量依赖性地抑制MKN-45细胞增殖,两药联合时IC50较两药单用时显著降低(P < 0.05)?DAPI染色和流式细胞仪显示TET和PTX联合用药组细胞凋亡率显著高于单药组(P < 0.05)?结论:TET联合PTX对胃癌细胞的增殖抑制及凋亡诱导有良好的协同效应?     

木黄酮靶向抑制MKN-45胃癌细胞Notch1蛋白表达及对增殖和凋亡的影响

目的:探讨木黄酮靶向抑制Notch1蛋白表达对人胃癌细胞MKN-45增殖和侵袭作用的影响及可能机制。方法:通过不同浓度木黄酮干预胃癌细胞MKN-45,以未干预细胞为正常对照组,Western blot法检测木黄酮抑制Notch1蛋白表达的效果,MTT法检测各组MKN-45细胞的增殖能力,荧光双标流式细胞术检测各组MKN-45细胞的凋亡状况,RT-PCR检测Bcl-2和BaxmRNA的表达水平。结果:木黄酮干预MKN-45胃癌细胞后能明显抑制Notch1蛋白表达,同时抑制MKN-45细胞增殖,促进MKN-45细胞凋亡。木黄酮干预明显上调细胞凋亡相关基因Bcl-2和Bax mRNA水平。结论:木黄酮干预可靶向抑制胃癌细胞MKN-45Notch1蛋白表达,抑制胃癌细胞MKN-45增殖并促进凋亡,可能与其上调细胞凋亡相关基因Bcl-2和Bax mRNA有关。     

Growth-inhibiting and Apoptosis-inducing Effects of Tanshinone Ⅱ A on Human Gastric Carcinoma Cells

To explore the effects of Tanshinone ⅡA on the proliferation, apoptosis and gene ex- pression of p53 and bcl-2 in human gastric carcinoma MKN-45 cells. Cell count and MTT assay were used to study the proliferation-inhibiting effect of Tanshinone ⅡA on MKN-45 cells. The effect of Tanshinone ⅡA on the cell cycle and apoptosis of MKN-45 cells were examined by propidium io- dide (PI) staining and flow cytometry. Semi-quantitative RT-PCR was used to further verify the ex- pression of p53 and bcl-2 gene after exposure to Tanshinone ⅡA in MKN-45 cells. The results showed that Tanshinone ⅡA significantly inhibited the growth and proliferation of MKN-45 cells in a dose- and time-dependent manner (P<0.05). Tanshinone ⅡA arrested MKN-45 cells in G2/M phase which led to an obvious accumulation of G2/M phase cells while decreased number of G0/G1 phase cells. This resulted in apoptosis of MKN-45 cells and the apoptosis rate was as high as 43.91% after treatment with 2.0 μg/mL TanshinoneⅡA for 96 h. It was also found that Tanshinone ⅡA up-regulated expression of p53 gene and down-regulated expression of bcl-2 gene. The cytostatic and antiproliferative effect of Tanshinone ⅡA makes it a promising anticancer agent for the treatment of gastric carcinoma.     

Growth-inhibiting and Apoptosis-inducing Effects of Tanshinone ⅡA on Human Gastric Carcinoma Cells

To explore the effects of Taushinone ⅡA on the proliferation, apoptosis and gene ex- pression of p53 and bcl-2 in human gastric carcinoma MKN-45 cells. Cell count and MTT assay were used to study the proliferation-inhibiting effect of Tanshinone ⅡA on MKN-45 cells. The effect of Tanshinone ⅡA on the cell cycle and apoptosis of MKN-45 cells were examined by propidium io- dide (PI) staining and flow cytometry. Semi-quantitative RT-PCR was used to further verify the ex- pression of p53 and bcl-2 gene after exposure to Tanshinone ⅡA in MKN-45 cells. The results showed that Tanshinone ⅡA significantly inhibited the growth and proliferation of MKN-45 cells in a dose- and time-dependent manner (P<0.05). Tanshinone ⅡA arrested MKN-45 cells in G2/M phase which led to an obvious accumulation of G2/M phase cells while decreased number of G0/G1 phase cells. This resulted in apoptosis of MKN-45 cells and the apoptosis rate was as high as 43.91% after treatment with 2.0 μg/mL Tanshinone ⅡA for 96 h. It was also found that Tanshinone ⅡA up-regulated expression of p53 gene and down-regulated expression of bcl-2 gene. The cytostatic and antiproliferative effect of Tanshinone ⅡA makes it a promising anticancer agent for the treatment of gastric carcinoma.     

Growth-inhibiting and apoptosis-inducing effects of Tanshinone II A on human gastric carcinoma cells

Summary To explore the effects of Tanshinone II A on the proliferation, apoptosis and gene expression of p53 and bcl-2 in human gastric carcinoma MKN-45 cells. Cell count and MTT assay were used to study the proliferation-inhibiting effect of Tanshinone II A on MKN-45 cells. The effect of Tanshinone II A on the cell cycle and apoptosis of MKN-45 cells were examined by propidium iodide (PI) staining and flow cytometry. Semi-quantitative RT-PCR was used to further verify the expression of p53 and bcl-2 gene after exposure to Tanshinone A in MKN-45 cells. The results showed that Tanshinone A significantly inhibited the growth and proliferation of MKN-45 cells in a dose-and time-dependent manner (P<0.05). Tanshinone A arrested MKN-45 cells in G₂/M phase which led to an obvious accumulation of G₂/M phase cells while decreased number of G₀/G₁ phase cells. This resulted in apoptosis of MKN-45 cells and the apoptosis rate was as high as 43.91% after treatment with 2.0 μg/mL Tanshinone II A for 96 h. It was also found that Tanshinone II A up-regulated expression of p53 gene and down-regulated expression of bcl-2 gene. The cytostatic and antiproliferative effect of Tanshinone II A makes it a promising anticancer agent for the treatment of gastric carcinoma.     

Blockade of cholecystokinin-2 receptor and cyclooxygenase-2 synergistically induces cellapoptosis, and inhibits the proliferation of human gastric cancer cells in vitro

Gastrin and cyclooxygenase-2(COX-2) playimportant roles in the carcinogenesis and progression ofgastric cancer.However,it remains unknown whether the combination of cholecystokinin-2(CCK-2) receptor antagonist plus COX-2 inhibitor exerts synergistic anti-tumor effects on human gastric cancer.Here,we demonstrated that the combination of AG-041R(a CCK-2 receptor antagonist) plus NS-398(a selective COX-2 inhibitor) treatment had synergistic effects on proliferation inhibition,apoptosis induction,down-regulation of Bcl-2 and up-regulation of Bax expression in MKN-45 cells.These results indicate that simultaneous targeting of CCK-2 receptor and COX-2 may inhibit gastric cancer development more effectively than targeting either molecule alone.(C)2008 Elsevier Ireland Ltd.All rights reserved.     

选择性COX-2抑制剂NS-398对宫颈癌细胞的作用及其作用机制

目的:研究选择性COX-2抑制剂NS-398对宫颈癌细胞的作用及其作用机制,探讨NS-398与卡铂在宫颈癌治疗中的协同作用.方法:用NS-398、卡铂及两者联合作用人宫颈癌Hela细胞,四甲基偶氮唑盐(MTT)比色法检测NS-398、卡铂及两者联合对宫颈癌细胞增殖的影响,流式细胞仪PI染色法分析NS-398、卡铂处理后宫颈癌细胞凋亡率和细胞周期的改变.结果:NS-398、卡铂对人宫颈癌hela细胞的增殖具有抑制作用.卡铂联合NS-398对人宫颈癌hela细胞的增殖抑制作用显著增加,其联合抑制率近似于NS-398和卡铂单药抑制率之和,也近似于2倍卡铂剂量时的增殖抑制率.流式细胞仪检测发现,与对照组比较,NS-398处理组G1期细胞明显增加,而S期细胞明显减少,两组比较差异有统计学意义(P＜0.05);而卡铂处理组G1期细胞明显减少,S期细胞明显增加,两组比较有统计学意义(P＜0.05).NS-398(200 μmol/L)作用Hela细胞48 h后,流式细胞仪检测发现,NS-398处理组凋亡率为3.43%±0.02%,对照组凋亡率为1.48%±0.03%,两组比较差异无统计学意义(P＞0.05).而卡铂(80 mg/L)处理组凋亡率为9.32%±0.02%,与对照组比较差异有统计学意义(P＜0.05).结论:选择性COX-2抑制剂NS-398对宫颈癌细胞的增殖具有抑制作用.NS-398对宫颈癌细胞的作用可能与凋亡无关.NS-398与卡铂在宫颈癌化疗中具有叠加作用.     

NS-398对胰腺癌细胞PCNA-1的增殖及凋亡的影响

目的 探讨环氧合酶-α抑制剂NS-398对人胰腺癌细胞株PCNA-1的增殖抑制作用.方法 采用MTT法、流式细胞术检测NS-398对胰腺癌细胞株PCNA-1细胞增殖抑制、细胞周期及对Bcl-2蛋白表达的影响.结果 NS-398抑制胰腺癌细胞株PCNA-1的增殖活性,呈剂量依赖效应关系; NS-398可影响PCNA-1细...     

胃癌癌前病变演化与细胞凋亡和增殖的关系

OBJECTIVE: To clarify the correlation between apoptosis/proliferation and the expressions of oncogene bcl-2 and P53 in the changes from superficial gastritis, intestinal metaplasia, dysplasia, gastric cancer in early stage to advanced gastric cancer. METHODS: TUNEL method was used to detected apoptosis. Immunohistochemical analysis was used to detect the expressions of proliferating cellular nuclear antigen(PCNA), bcl-2 protein and P53 protein. Results In the patients of superficial gastritis, atrophic gastritis, intestinal metaplasia, dysplasia, early gastric cancer and advanced gastric cancer and advanced gastric cancer, apoptotic indexes were: (6.4 +/- 1.9)%, (14.1 +/- 4.1)%, (23.3 +/- 6.1)%, (17.4 +/- 2.6)%, (11.3 +/- 3.7)%, (6.3 +/- 2.0)% respectively. PCNA indexes were: (11.3 +/- 2.2)%, (18.9 +/- 6.5)%, (20.3 +/- 7.3)%, (40.0 +/- 10.6)%, (53.1 +/- 10.9)% and (72.4 +/- 18.4)% respectively; the expression rates of bcl-2 were 10.0%, 23.3%, 40.0%, 56.7%, 85.7% and 46.7%. The expression rates of P53 were: 0%, 0%, 0%, 4.3%, 14.3% and 53.3%. The difference in the majority of observed indexes were significant (P < 0.05-0.01). CONCLUSION: During the changes of gastric cancer, the apoptotic and proliferating indexes incerased simultaneously in superficial gastritis, atrophic gastritis and intestinal metaplasia. However, PCNA indexes further increased but apoptotic indexes decreased in dysplasia, early gastric cancer and advanced gastric cancer and advanced gastric cancer. The former may be the phenomenon in early gastric cancer and advanced gastric cancer and advanced gastic cancer. The former may be the phenomenon in ear early gastric cancer the latter may be the phenomenon in advanced gastric cancer.     

消痰散结方药物血清对人胃癌MKN-45细胞增殖和凋亡的影响

目的：观察消痰散结方药物血清对人胃癌MKN-45细胞生长和凋亡的影响。方法：采用低、中、高浓度消痰散结方药物血清处理MKN-45细胞后,倒置相差显微镜下观察MKN-45细胞的形态学变化,血球计数盘计数细胞,细胞活性计数试剂盒检测消痰散结方药物血清对MKN-45细胞增殖的影响;Annexin V-异硫氰酸荧光素（{luorescein isothiocyanate,FITC）／碘化丙啶（propidiumiodide,PI）双标记法流式细胞术检测消痰散结方药物血清诱导MKN-45细胞后细胞凋亡的情况。结果：低、中、高浓度消痰散结方药物血清均能不同程度地抑制人胃癌MKN-45细胞的增殖,细胞发生了脱落、变圆、折光率下降等形态学变化;Annexin V-FITC／PI双标记法检测显示消痰散结方药物血清可诱导细胞发生凋亡,其中中、高剂量的效果有高于低剂量的趋势。结论：消痰散结方药物血清可抑制人胃癌MKN-45细胞的增殖,促进其凋亡。