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1.
目的 研究Survivin基因在原发性肝细胞癌中的表达水平及其与肝癌侵袭转移的相关性.方法 收集4种肝细胞癌细胞株,35例原发性肝癌组织标本及相应的癌旁组织,以逆转录-聚合酶链反应(RT-PCR)检测Survivin mRNA转录情况;Western blot法检测Survivin蛋白表达.结果 在mRNA水平4株肝癌细胞株随侵袭转移能力升高Survivin表达依次升高(P<0.01),HC-CLM6细胞株中Survivin表达水平最高.肝癌组织Survivin mRNA表达均为阳性,而癌旁组织内无一例阳性表达,Survivin mRNA的表达水平在肝内转移组(1.082±0.213)显著高于肝内无转移组(0.799±0.324,P<0.05).Western blot的结果与RT-PCR结果一致,肝内转移组Survivin蛋白表达(0.892±0.198)显著高于肝内无转移组(0.342±0.237,P<0.05).结论 Survivin在原发性肝细胞癌中表达,且与侵袭转移等肿瘤的恶性生物学行为有关,Survivin基因高表达可作为判断HCC侵袭性和进展的一个潜在重要指标.  相似文献
2.
高/低转移人肝癌细胞株MHCC97-H/L中侧群细胞分析   总被引:1,自引:1,他引:0  
目的观察高/低转移人肝癌细胞株MHCC97-H/L是否存在侧群(SP)细胞并鉴定其致瘤性。方法MHCC97-H/L予Hoechst33342和羟基荧光素二醋酸盐琥珀酰亚胺脂(CFSE)荧光染色;流式细胞分选MHCC97.H/L中SP细胞,分选后细胞皮下接种非肥胖性糖尿病联合免疫缺陷(NOD/SCID)小鼠,观察成瘤情况。结果Hoechst33342和CFSE染色结果显示,MHCC97-H/L中未染色细胞分别为(4.02±0.02)%/(1.02±0.01)%,流式细胞分选结果示MHCC97-H/L中sP细胞为(4.88±0.66)%/(0.88±0.36)%,比例差异有统计学意义(P〈0.05)。体内成瘤实验显示,SP细胞只需1×10。个即可在NOD/SCID小鼠皮下成瘤(5/6),而1×10^6个非SP细胞均未成瘤(0/6)。结论高/低转移人肝癌细胞株MHCC97-H/L中均存在SP细胞亚群,但前者比例显著高于后者。肝癌SP细胞具有极高的致瘤性,并可能和肝癌转移潜能相关。  相似文献
3.
目的:探讨获得性免疫缺陷综合征患者高效抗逆转录病毒治疗(HARRT)后,巨细胞病毒性视网膜炎(CMVR)相关免疫重建炎性综合征的临床特点。方法分析首都医科大学附属北京地坛医院2010年9月至2012年1月收治的130例获得性免疫缺陷综合征患者HAART前后的临床特点,在抗病毒治疗过程中出现的CMVR相关免疫重建综合征在眼部的表现及治疗转归,并进行观察分析。结果130例接受HAART的获得性免疫缺陷综合征患者中,出现眼部CMVR相关免疫重建综合征8例;HARRT治疗前的CD4为(17±11)个/μl,平均出现CMVR的时间为36 d,未中断HARRT治疗,加用病毒治疗,病情得到有效的控制。结论 HAART可使免疫重建,会启动一些接受抗病毒治疗获得性免疫缺陷综合征患者的炎症反应,在HARRT治疗前后一定要密切眼科检查,及时诊治,提高HIV/AIDS患者的生存质量。  相似文献
4.
目的 探讨体外化疗后残余肝癌细胞侵袭转移潜能变化及其机制.方法 以2 mol/L奥沙利铂对人肝癌细胞株MHCC97L和HepG2进行体外冲击化疗,获得残癌细胞株MHCC97L-oxa和HepG2-oxa.对比研究残癌细胞株和母细胞株的侵袭、运动、增殖能力以及分子表型的差异.结果 与母细胞株比较,MHCC97L-oxa和HepG2-oxa细胞显示出显著增强的运动能力(19.17 ±2.64比29.50±5.28,P<0.01和12.33±2.73比21.17±3.13,P<0.01)和侵袭能力(增强0.89倍,P<0.01和增强1.58倍,P<0.01),而增殖能力则显著下降.MHCC97L-oxa和HepG2-oxa细胞在形态和分子表型上明显区别于MHCC97L和HepG2,呈现出间质细胞形态,伴E-钙粘蛋白(E-cadherin)表达显著下调,N-cadherin、波形蛋白(vimentin)以及转录因子Snail表达显著增强,细胞呈现上皮-间质转化.结论体外化疗后残余肝癌细胞发生上皮-间质转化,侵袭转移潜能增强.  相似文献
5.
目的 研究携带IL-24基因的溶瘤腺病毒对肝癌细胞抑制生长和转移的作用.方法 构建Ad.HS4.AFP.E1A/IL-24,病毒的复制由人甲胎蛋白启动子控制,携带IL-24基因.检测病毒在不同细胞系中的选择性复制,以及对高转移潜能人肝癌细胞系MHCC97-H的生长抑制、诱导凋亡和抑制转移能力(侵袭、运动、黏附)的作用.结果 Ad.HS4.AFP.E1A/IL-24在肝癌细胞SMMC-7721、Hep3B和MHCC97-H中选择性表达,而不影响正常肝细胞L02(P<0.05).Ad.HS4.AFP.E1A/IL-24可明显抑制MHCC97-H细胞的增殖,诱导其凋亡,并抑制其体外运动、侵袭和黏附能力(P<0.01).RT-PCR和明胶酶谱显示其抑制肝癌作用与抑制MMP-2的表达有关.结论 携带IL-24基因的溶瘤腺病毒能够选择性抑制肝癌细胞的增殖并抑制其转移.
Abstract:
Objective To investigate the selective oncolytic role and antitumor action of a novel recombinant adenovirus containing E1A and IL-24 on hepatocellular carcinoma cell(HCC). Methods The recombinant adenovirus expressing IL-24 (Ad. HS4. AFP. E1A/IL-24) was constructed by using modified human alpha-fetoprotein (HS4-AFP) promoter to drive adenovirus E1A gene and II-24 gene.Cell Counting Kit-8 were performed to test the selective cytotoxicity of the virus in hepatocellular carcinoma cell lines SMMC-7721, Hep3B, MHCC97-H and hepatocyte cell line L02 . The mRNA and protein expression of IL-24 gene were detected by RT-PCR and western blot. Cell growth curves and Annexin V/PI assay were used to study cell proliferation and apoptosis of MHCC97-H. The anti-metastatic effects of the recombinant adenovirus were evaluated in cell adhesion, migration, and cell motion. Matrix metalloproteinase-2 (MMP-2) expression was examined by RT-PCR and zymography.Results Selective replications of Ad. HS4. AFP. E1A/IL-24 adenovirus were observed in over expression AFP cell line MHCC97-H, a highly metastatic potential HCC cell line but not in hepatocyte cell line L02. The mRNA and protein of IL-24 were also over expressed in MHCC97-H. This recombinant adenovirus also showed the significant oncolytic action on MHCC97-H but not on L02 (P<0. 05). Besides, the recombinant adenovirus significantly inhibited MHCC97-H metastatic potential such as cell adhesion, migration and invasion as well(P<0.01). Conclusion The selective oncolytic adenovirus expressing E1A and II-24 has a selective antitumor effect and play an inhibitory role in metastasis of HCC.  相似文献
6.
Objective To investigate the effects of Pseudomonas aeruginosa vaccine (PA) on proliferation and invasiveness of the hepatocellular carcinoma cell line MHCC97L with metastatic potential. Methods Proliferation, growth curve, plate efficiency, flow cytometry, transwell invasion assay, cell motility assay, scarification test, vascular endothelial growth factor (VEGF) and matrix metalloproteinase-2 (MMP2) protein activity were evaluated after cells were treated with PA at various concentrations. Results PA can inhibit the proliferation and plate efficiency of MHCC97L cell markedly in a dose-dependent manner. The IC50 of cells treated with PA for 48 h and 72 h was 3.1 ×108/ml and 1.9 × 108/ml, respectively. The doubling time increased and plate efficiency decreased gradually when cells treated with 0.5 × 108/ml, 1 × 108/ml and 2 × 108/ml PA (P<0.01). PA could induce cell cycle arrest at the G1 phase in a dose-dependent manner by flow cytometric analysis. The average amount of invading cell per field in cell invasion assay and motility assay were 4. 8 ± 1.3 and 8. 8±2.2 when cells treated with 1× 108/ml PA, which was significantly lower than that of control group (8. 6±2. 1 and 15. 6±1.2 ) (P<0.01) Scarification test showed that the metastatic ability of cells treated with 1 × 108/ml PA significantly lower than that in the control group. Comparison between cells treated with 1 × 108/ml PA and control group, no remarkable difference was found regarding expression of VEGF and MMP2 in supernatant of cell culture. Conclusion PA can inhibit proliferation and plate efficiency of HCC cell line MHCC97L, which is in part mediated by the cell cycle arrest at the G1 phase. PA could inhibit invasiveness of HCC cell line MHCC97L, which is unrelated to the VEGF and MMP2 protein activity.  相似文献
7.
目的 探讨绿脓杆菌制剂(pseudomonas aeruginosa vaccine,PA)对有转移潜能的人肝癌MHCC97L细胞增殖和侵袭能力的影响.方法 采用不同浓度的PA分别作用于MHCC97L细胞,观察细胞增殖、生长曲线、克隆形成率、流式细胞术分析(FCM)、侵袭、运动、迁移、VEGF和MMP2蛋白表达(ELISA法).结果 PA明显抑制MHCC97L细胞增殖和克隆形成,呈良好的剂量-效应关系.PA 48 h和72 h的IC50分别为3.1×108/ml和1. 9×108/ml.PA浓度为0.5×108/ml、1×108/ml和2×108/ml时,其细胞倍增时间依次增加,克隆形成率依次降低(P均<0.01);FCM显示,G1期细胞比例随PA浓度增加而增加,S+G2期细胞比例随PA浓度增加而降低(P均<0.01).PA浓度为1×108/ml时,穿过人工基底膜(侵袭实验)和上室底膜(运动实验)的细胞数(分别为4.8±1.3和8.8±2.2)明显低于对照组(8.6±2.1和15.6±1.2)(P均<0.01);细胞经72 h培养后,对照组划痕逐渐愈合,1×108/ml的PA组细胞划痕依然明显.ELISA法检测发现,1×108/ml的PA组其VEGF蛋白和MMP2蛋白含量和对照组相比均无明显差异(P均>0.05).结论 在一定条件下,绿脓杆菌制剂可抑制人肝癌MHCC97L细胞增殖和克隆形成,其作用部分是通过使细胞周期阻滞在G1期实现的;绿脓杆菌制剂可以明显抑制MHCC97L细胞的侵袭、运动和迁移能力,其作用和VEGF、MMP2蛋白分泌关系不明显.  相似文献
8.
Objective To investigate the effects of Pseudomonas aeruginosa vaccine (PA) on proliferation and invasiveness of the hepatocellular carcinoma cell line MHCC97L with metastatic potential. Methods Proliferation, growth curve, plate efficiency, flow cytometry, transwell invasion assay, cell motility assay, scarification test, vascular endothelial growth factor (VEGF) and matrix metalloproteinase-2 (MMP2) protein activity were evaluated after cells were treated with PA at various concentrations. Results PA can inhibit the proliferation and plate efficiency of MHCC97L cell markedly in a dose-dependent manner. The IC50 of cells treated with PA for 48 h and 72 h was 3.1 ×108/ml and 1.9 × 108/ml, respectively. The doubling time increased and plate efficiency decreased gradually when cells treated with 0.5 × 108/ml, 1 × 108/ml and 2 × 108/ml PA (P<0.01). PA could induce cell cycle arrest at the G1 phase in a dose-dependent manner by flow cytometric analysis. The average amount of invading cell per field in cell invasion assay and motility assay were 4. 8 ± 1.3 and 8. 8±2.2 when cells treated with 1× 108/ml PA, which was significantly lower than that of control group (8. 6±2. 1 and 15. 6±1.2 ) (P<0.01) Scarification test showed that the metastatic ability of cells treated with 1 × 108/ml PA significantly lower than that in the control group. Comparison between cells treated with 1 × 108/ml PA and control group, no remarkable difference was found regarding expression of VEGF and MMP2 in supernatant of cell culture. Conclusion PA can inhibit proliferation and plate efficiency of HCC cell line MHCC97L, which is in part mediated by the cell cycle arrest at the G1 phase. PA could inhibit invasiveness of HCC cell line MHCC97L, which is unrelated to the VEGF and MMP2 protein activity.  相似文献
9.
目的 分析声辐射力脉冲(ARFI)弹性成像及超微血流成像(SMI)评估IgA肾病(IgAN)严重程度的价值。方法 将124例经穿刺右肾中下极活检病理证实的IgAN患者根据估测肾小球滤过率(eGFR)分为A、B、C组。A组32例,eGFR>90 ml/(min·1.73 m2);B组54例,eGFR 60~90 ml/(min·1.73 m2);C组38例,eGFR<60 ml/(min·1.73 m2),于肾活检前3天内行ARFI及SMI。将取样框置于右肾中下极、两肾柱间邻近肾被膜皮质区域,分别检测剪切波速度(SWV)及血流阻力指数(RI)。对比3组SWV、RI,以Pearson相关分析法观察SWV与RI的相关性。结果 A、B、C组SWV逐渐降低,RI逐渐增加,组间两两比较差异均有统计学意义(P均<0.05)。相关性分析结果显示,A、B、C组SWV均与RI呈负相关(r=-0.709、P<0.001,r=-0.792、P<0.001,r=-0.473、P=0.003)。结论 利用ARFI及SMI能无创评估IgAN严重程度。  相似文献
10.
刘彬彬  罗政强  徐汉青  黄创 《骨科》2021,12(6):545-549
目的 比较前环皮下内固定支架(INFIX)和微创经皮钢板内固定(MIPPO)治疗骨盆前环骨折的疗效。方法 回顾性分析2016年7月至2020年5月我院收治且符合标准的48例不稳定型骨盆骨折病人的临床资料,其中INFIX组22例,MIPPO组26例。INFIX组,男15例,女7例,年龄为(36.89±11.12)岁(21~58岁)。MIPPO组,男17例,女9例,年龄为(43.70±17.66)岁(21~71岁)。比较两组手术时间、术中出血量、骨折复位质量(Matta标准)、骨折愈合时间、骨折术后功能恢复情况(Majeed评分系统),并记录并发症。结果 两组均获得随访,随访时间为5~17个月,平均为13个月。INFIX组手术时间[(75.41±15.25) min]低于MIPPO组[(85.62±17.92) min],差异无统计学意义(t=-5.154,P=0.101);INFIX组术中出血量[(30.27±7.67) mL]明显低于MIPPO组[(111.15±24.30) mL],差异有统计学意义(t=-14.971,P=0.006);两组负重时间[(16.00±2.06)周vs.(15.94±2.32)周]、Majeed评分[(81.90±7.73)分vs.(83.44±3.54)分]、骨折复位优良率[81.8% vs.84.6%]比较,差异均无统计学意义(P均>0.05),但MIPPO组能够达到更好的解剖复位。INFIX组1例病人出现股外侧皮神经损伤,两组病人未出现内固定失败情况。结论 治疗骨盆前环骨折,INFIX具有出血少、手术创伤小等优点,钢板能够达到更好的解剖复位,两组具有相似的术后功能恢复情况。可根据术者经验和病人具体情况选择适宜的固定方式。  相似文献
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