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目的 观察缺氧诱导因子-1α(HIF-1α)反义寡核苷酸体外对人胶质瘤U87细胞增殖、凋亡和侵袭的影响.方法 人工合成的HIF-1α反义短发夹经阳离子脂质体包裹后瞬时转染人胶质瘤细胞株U87,采用Western blot法检测转染后胶质瘤细胞HIF-1α蛋白表达,证实转染成功,再采用噻唑蓝(MTT)比色法和Transwell小室体外侵袭实验检测转染后对U87细胞增殖体外侵袭能力的影响,流式细胞仪检测细胞凋亡.结果 转染靶向HIF-1α的短链发夹RNA的胶质瘤细胞,HIF-1α蛋白表达较空白细胞组明显降低,MTT法检测转染组、空载体组和空细胞组24 h细胞的增殖率分别为5.46%、21.25%、22.32%,体外侵袭性实验表明转染组、空载体组和空细胞组细胞12 h侵袭ECM的细胞数分别为(22±4)、(124±3)、(122±6);流式细胞仪检测表明转染组、空载体组和空细胞组细胞凋亡率分别为(53.35±2.80)%、(12.02±1.60)%、(10.19±3.15)%,转染组与空白细胞组及空载体组比较差异均有统计学意义(P<0.05).结论 封闭HIF-1α蛋白的表达,可以抑制人胶质瘤U87细胞增殖和侵袭能力,促进细胞凋亡.Abstract: Objective To investigate the effects of antisense oligodeoxynucleotides (ODNs) targeting hypoxia inducible factor-1α (HIF-1α) on the apeptosis, proliferation and invasion of U87 glioma cell line. Methods Antisense ODNs were constructed and transfected into U87 cells by Dosper liposomal reagent. The HIF-1α gene expression was detected by Western blotting, the cell proliferative index was determined by methyl thiazol tetrazolium (MTT) assay, the cells cycle and apoptosis of the cells were examined by flow cytometry and the changes of the U87 cells invasive ability were measured by Transwell chamber.Results The protein expression of HIF-1α in U87 cells was down-regulated by HIF-1α ASONDN. The cell proliferative index in transfected group, empty vector group and control group was 5.46%, 21.25%and 22. 32% respectively. Transwell chamber assay showed that the cell number in transfected group,empty vector group and control group was (22 ±4), ( 124 ±3) and ( 122 ±6) respectively; and the apoptosis rate was (53. 35 ± 2. 80) %, ( 12.02 ± 1.60 )%, ( 10. 19 ± 3. 15 )% respectively, and there was significant difference between transfected group and other groups ( P < 0. 05 ). Conclusion Silencing the expression of HIF-1α protein can inhibit proliferation and invasion, and promote apoptosis of human glioma U87 cells. HIF-1α is expected to become a target for cancer therapy. 相似文献
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目的 探讨神经生长因子(NGF)在脑膜瘤中的表达及其临床意义.方法 对56例脑膜瘤切片进行NGF、孕激素受体(PR)、Ki67免疫组织化学染色,并随访患者脑膜瘤复发情况.结果 脑膜瘤中NGF核阳性率为41.1%,高于Ki67阳性率35.7%(P>0.05).PR阳性率为印.7%.NGF核阳性率与Ki67阳性率呈正相关(r=0.741,P<0.01),与PR阳性率呈负相关(r=-0.59,P<0.01).NGF核阳性组患者中位复发时间(36.000±2.484)个月明显短于NGF核阴性组(59.000±2.295)个月(P<0.01).结论 NGF核阳性率可以作为脑膜瘤细胞增殖活性及预后判断指标. 相似文献
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目的 探讨神经内镜下经鼻蝶垂体瘤切除术后并发症的原因、治疗方法及预防措施。方法 回顾
该院在神经内镜下经鼻蝶垂体瘤切除术的51 例患者临床资料,探究术后并发症的原因。结果 术后暂时性尿
崩症8 例,予弥凝替代治疗后痊愈出院;脑脊液鼻漏2 例,经严格卧床、腰大池引流,再次行内镜下封堵后治
愈;蝶窦感染1 例,升级抗生素治疗后痊愈;甲状腺功能减退3 例,予左旋甲状腺素替代治疗3 ~ 9 个月后
激素恢复正常;视力下降1 例,急诊内镜下清除止血纱、明胶海绵,患者视力开始逐渐好转,出院时和内镜探
查术前比较,左眼光感恢复,右眼视力尚可。结论 神经内镜经鼻蝶垂体瘤切除手术创伤小、视野清晰,术前
详细的风险评估,术中谨慎操作,可减少术后并发症的发生,提高垂体瘤患者的治愈率。 相似文献
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目的 采用^125I粒籽颅内植入作胶质瘤内放射治疗,从而提高脑胶质瘤的疗效。方法我们2004年2月~20004年9月对9例脑胶质瘤病人采用手术切除肿瘤后,在瘤床及残余肿瘤内植入^125I粒籽作内放射治疗。观察内放射的并发症和肿瘤复发情况。结果本组9例中肿瘤全切除8例,次全切除1例。全部病例均植入^125I粒籽,平均总活度3.4mci。发生1例头发斑片脱落,1例切口部分渗出,有2cm长裂口经重新缝合后愈合。全部病例随访至今未见肿瘤复发。结论^125I粒籽植入脑胶质瘤,局部控制率高,并发症发生率低,是一种有效的治疗方法。对远期疗效还需进一步长期随访。 相似文献
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重型颅脑损伤后脑脊液中β-内啡肽动态变化及纳洛酮治疗作用 总被引:11,自引:0,他引:11
一、资料及方法1.76例重型 (GCS 3~ 8分 )颅脑损伤患者 ,按配对试验法分为 2组。对照组 (常规治疗 ) :37例 ,其中男 2 1例 ,女 16例 ,平均年龄 48 2岁。治疗组 (常规治疗 纳洛酮 ) :38例 ,其中男 2 3例 ,女 15例 ,平均年龄 5 3 6岁。入院后第 1、 3、 7、 15、30天用放射免疫法测定CSF中 β EP值。并对大部分病人 (71 5 % )进行颅内压 (ICP)监护 ,持续 4~ 9天。再由公式CPP =mSAP ICP计算出每日脑灌注压 (CPP)。治疗组于入院当日开始使用纳洛酮 ,采用纳洛酮 4mg/日加入 10 %葡萄糖溶液 5 0 0ml中 ,持续缓慢… 相似文献
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目的 分析后循环动脉瘤的特点,总结血管内介入治疗的经验、教训.方法 采用血管内栓塞治疗32例后循环动脉瘤,对临床资料、疗效、并发症等进行分析总结.结果 32例中,动脉瘤闭塞>95%占90.7%.<95%占9.3%.术中常见并发症是动脉瘤破裂、血管痉挛和血栓形成,本组占15.6%.术后早期死亡2例,23例获得随访,GOS评定,Ⅰ级16例,Ⅱ级4例,Ⅲ级2例,Ⅳ1例.结论 血管内栓塞治疗是后循环动脉瘤的理想治疗方法,它具有安全性高,并发症少,病死率低等优点. 相似文献
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目的 分析颅内夹层动脉瘤的临床特点,总结血管内栓塞治疗的经验.方法 对16例颅内夹层动脉瘤患者采用血管内栓塞治疗,其中3例采用单支架或双支架置入术,9例应用支架辅助下弹簧圈栓塞技术,3例使用球囊或弹簧圈辅助下球囊载瘤动脉闭塞术,1例使用单纯弹簧圈动脉瘤栓塞术.结果 16例中,动脉瘤完全闭塞9例(包括载瘤动脉闭塞病例),次全闭塞3例,不全闭塞4例(包括支架植入病例).随访6个月-3年,除早期1例死亡外,GOS结果评定:Ⅰ级8例,Ⅱ级4例,Ⅲ级2例,Ⅳ级1例.8例随访时脑血管造影,7例未见复发,1例瘤颈再通,正在随访.结论 根据颅内夹层动脉瘤的不同部位、不同病理特点,选择不同的血管内栓塞治疗方法,是治疗夹层动脉瘤安全、有效的方法之一.Abstract: Objective To analyze the clinical features of intracranial dissecting aneurysm and summarize the experience of its endovascular embolization. Methods 16 cases of intracranial dissecting aneurysm were treated by endovascular embolization. Among these 16 patients, 3 patients were treated with single stent or double stent placement technique, 9 patients were treated with stent- assisted coil embolization technique, 3 patients were ball artery occluded using the balloon - assisted or coil - assisted technique, and 1 patient was treated by simple coil embolization. Results Out of the 16 patients, 9 cases were completely occluded ( including parent artery occlusion cases ), 3 cases were subtotally occluded, 4 cases were incompletely occluded ( including cases of stent implantation ). Followed up for 6 months to 3 years, in addition to 1 case of early death, GOS evaluation results were respectively: grade Ⅰ 8 cases, grade Ⅱ 4 cases, grade Ⅲ 2 cases, grade Ⅳ 1 case. Cerebral angiography was carried out in 8 follow - up patients. No recurrence was watched in 7 cases, aneurysm neck recanalization was watched in 1 case, follow up was continued. Conclusion According to different localization of intracranial aneurysm and different pathological features, different methods of endovascular embolization are selected. It is the safe and effective treatment of dissecting aneurysm. 相似文献
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脑外伤后血清胃泌素动态变化及临床意义 总被引:6,自引:0,他引:6
目的 探讨脑外伤后血清胃泌素动态变化及与上消化道出血的关系。方法 根据GCS评分 ,将病人分为轻型 5 2例 ,中型 2 8例 ,重型 35例。于伤后 1~ 15天上午空腹抽取静脉血 ,共5次 ,采用放射免疫法测定胃泌素值。同时记录各组上消化道出血数。结果 伤后第 1天胃泌素开始升高 ,第 3天达到高峰 ,其峰值与伤情轻重密切相关 (P <0 0 1) ;且伤情越重 ,上消化道出血的发生率越高。结论 脑外伤后伤情越重 ,血清胃泌素越高 ,上消化道出血的发生率也越高。 相似文献