结肠癌肝转移细胞增殖能力减弱

目的 通过阶梯转移法在裸鼠中筛选出人结肠癌肝转移细胞,然后对结肠癌肝转移细胞的生长增殖能力进行鉴定.方法 通过SW1116细胞株裸鼠皮下连续5次传代后取皮下种植瘤裸鼠结肠原位种植,分别取肝脏转移灶和皮下5代细胞进行原代培养,获得大肠癌肝转移细胞和皮下5代的原代细胞,分别命名为结直肠癌肝转移细胞1代(CHM-1)和皮下第5代(P5),通过CCK-8测生长曲线、流式检测细胞周期以及细胞周期相关的蛋白的免疫细胞化学来对SW1116、CHM-1和P5增殖能力进行检测.结果 细胞增殖实验显示CHM-1生长速度明显慢于SW1116和P5细胞(P＜0.05);流式细胞周期分析中CHM-1细胞G41期(68.390±2.865)%比例高于SW1116(50.440±1.472)%和P5(53.930±2.651)%(P＜0.05),G2期CHM-19(13.530±4.411)%比例要低于SW1116(32.030±5.645)%和P5(29.720±3.559)%(P＜0.05),S期3种细胞差异无统计学意义(18.250±6.901)%、(19.050±4.162)%、(18.930±0.169)%(P＞0.05);免疫细胞化学分析发现细胞周期蛋白Cyclin DI在CHM-1(23.7±4.7)%中的表达比SW1116(30.2±5.1)%和P5(32.1±4.2)%减少(P＜0.05).结论 发现侵袭能力和生长增殖能力具有反向关联,即结肠癌肝转移细胞具有更强的侵袭能力,但生长增殖速度比其他细胞更慢.

Abstract：

Objective To study the proliferation ability of liver metastatic colorectal cancer cells by establishing stepwise metastatic colorectal carcinoma cell model via in vivo selection.Methods SW1116 cells were transplanted into the subcutis of nude mice and serially passaged for 5 times,and then the subcutaneous tumor was implanted into the cecal wall of new nude mice.The liver metastatic lesions and the subcutaneous carcinoma cells of the fifth generation were picked for primary culture.Two cell lines named CHM-1 and P5 were obtained.Proliferation levels were analyzed by testing of cell growth curve,cell cycle analyses by flow cytometry and Cyclin D1 analysis by immunocytochemistry.Results CHM-1 grew much slower than P5 and SW 1116 although there was no difference between P5 and SW 1116 in cell proliferation assay ( P＜0.05 ).Cell cycle analysis revealed that the percentage of cells in G0/G1 phase was higher (P＜0.05) in CHM-1 (68.390 ±2.865)% than in SW1116 (50.440 ± 1.472)% and P5 (53.930 ± 2.651)%,but that in G2/M phase was lower ( P＜0.05 ) in CHM-1 ( 13.530 ± 4.411 )% than in SW1116 (32.030 ±5.645)% and P5 (29.720 ±3.559)% rough there was no difference in S phase ( 18.250 ± 6.901 )%,( 19.050 ± 4.162 )%,( 18.930 ± 0.169 )% ( P ＞ 0.05 ).The expression of cell cycle proteins Cyclin D1 was decreased ( P＜0.05 ) in CHM-1 ( 23.7 ± 4.7 )% as compared with thoseinP5(32.1±4.2)% and SW1116 (30.2 ±5.1)%.Conclusion In the same cell line,there was a reverse relationship between the ability of invasion and proliferation.     

头孢硫脒联合左氧氟沙星治疗社区获得性肺炎的疗效分析

目的：评价头孢硫脒与左氧氟沙星联合用药治疗社区获得性肺炎（CAP）的疗效和安全性。方法：140例CAP患者随机分成两组，治疗组应用头孢硫脒2g静脉滴注，每目2次，左氧氟沙星200mg静脉滴注，每日2次，连续7～8d；对照组给予头孢曲松1g静脉滴注，每日2次，连续7～8d。结果：治疗组总有效率95．83％，明显高于对照组82．39％（P〈0．01）。结论：头孢硫脒与左氧氟沙星联合用药治疗CAP有良好的临床细菌学疗效和安全性。     

异丙酚复合芬太尼静脉麻醉与笑气吸入用于无痛人流的临床观察

人工流产是中止早期妊娠的方法之一，手术疼痛常给患者带来很大的痛苦，随着人们生活水平的提高及医疗条件的改善，越来越多患者希望在施术时尽可能减轻疼痛，在人流术中辅以镇痛技术，称为无痛人流。镇痛方法有多种，目前最常用的是异丙酚复合芬太尼静脉麻醉与笑气吸入麻醉两种方法。我院自2002年开展无痛人流以来，主要采取以上两种方法，现将两种方法的临床应用情况报道如下。     

单切口入路行双侧睾丸手术

目的探讨单切口入路行双侧阴囊手术的可行性. 方法回顾性分析27例采用单侧或正中阴囊皮肤直切口同期行双侧阴囊手术的临床资料. 结果 27例患者中,行单侧阴囊皮肤直切口15例,其中前列腺癌8例,双侧附睾结节2例,一侧附睾结节伴另一侧睾丸鞘膜积液2例,双侧睾丸鞘膜积液3例;行阴囊皮肤正中直切口12例,其中前列腺癌9例,双侧附睾结节2例,一侧附睾结节伴另一侧睾丸鞘膜积液1例.所有患者术后均未出现阴囊或下腹部血肿,伤口甲级愈合.结论与传统的双侧阴囊切口相比,阴囊单切口减少了皮肤切口,缩短了手术时间,减少了患者痛苦,疗效满意,值得推荐.     

长期口服小剂量伐地那非治疗按需服药无效ED的疗效观察

目的:评估持续口服小剂量伐地那非治疗按需服药无效的勃起功能障碍(ED)患者的疗效及停药后效果维持状况.方法:将按需服药无效的39例ED患者改用长期口服小剂量伐地那非治疗3个月,在治疗前后及停药后3个月分别记录患者国际勃起功能指数-5(International index of erectile function-5,IIEF-5)评分及患者性生活日记中插入和保持勃起的成功率,并且记录治疗前后夫妻性满意度.结果:本组患者治疗后主要疗效指标均高于治疗前,且治疗前后指标差异有统计学意义(P<0.01);停药后3个月,主要指标仍高于基线水平,且差异有统计学意义(P<0.05).结论:每天口服小剂量伐地那非对约半数(48.6%)按需服药无效的ED患者,可改善勃起功能,且安全、有效.     

肾Rosai-Dorfman病1例

患者,女,67岁.2003年10月日因左腰痛1月入院.自述无发热、血尿、盗汗、乏力和尿路刺激症状.体检:全身浅表淋巴结无肿大,未触及体表肿物,肝脾不大,两肾区无叩痛.血常规及血生化也未见异常.     

裸鼠原位种植大肠癌肝转移三种建模方法的比较

Objective To establish and compare three orthotopic implantation nude mice models of colorectal cancer metastasis to liver. Methods Human SW1116 cell line was inoculated into 5 BALB/ C nude mice. Eighty-four nude mice were divided equally into pouch, fibrin glue, 1×106 cell and 1 × 105 cell microinjection groups. After animals were killed, the metastasis of cancer in situ, the liver, the lung, the spleen, the pancreas, and the mesentery was observed under the microscopy after HE staining. Results The metastasis rate in groups of pouch, fibrin glue, 1×1106 cell and 1×105 cell microinjection was 100% , 100% , 50. 0% and 14. 3% respectively. The liver metastasis tumor in fibrin glue group was bigger than other groups. HE staining indicated that the liver metastasis tumor was derived from colon tumor. Conclusion Among the three orthotopic implantation nude mice models of colorectal cancer metastasis to liver, the fibrin glue method has a high success rate of operation, a high metastasis rate of the liver, and is simple to manipulate.     

黄芩总黄酮对博莱霉素致大鼠肺纤维化的干预作用及其机制研究

目的 观察黄芩总黄酮对博莱霉素致大鼠肺纤维化的影响及其作用机制。方法 SD大鼠随机分为5组：对照组、模型组、泼尼松龙阳性对照（3.34 mg/kg）组、黄芩总黄酮高剂量和低剂量（50、25 mg/kg）组。大鼠气管内注射博莱霉素制备肺纤维化模型后,各给药组ig给予相应药物,每天给药1次。28 d后处死动物,观察大鼠血清中总抗氧化能力（T-AOC）、还原性谷胱甘肽（GSH）、髓过氧化物酶（MPO）的水平;取固定部位肺组织分别行HE、Masson染色,进行病理组织学检查; RT-PCR法检测黄芩总黄酮对大鼠肺组织中TGF-β1、Smad2、Smad7、α-SMA、胶原I的mRNA表达水平。结果 与模型组相比,黄芩总黄酮给药组大鼠血清中T-AOC、GSH水平均升高,MPO水平显著降低;肺泡炎和肺纤维化程度明显减轻（P＜0.05、0.01）;TGF-β1、Smad2、α-SMA、胶原I基因表达显著降低,Smad7表达显著升高（P＜0.05、0.01）。结论 黄芩总黄酮对博莱霉素所致大鼠肺纤维化具有一定的治疗作用,其机制可能与抗氧化损伤、抑制炎症细胞的浸润活化及调控TGF-β1/Smad信号通路有关。