蒿芩清胆汤对流感病毒性湿热证NF-кB表达的影响

目的:应用蒿芩清胆汤对流感病毒性肺炎湿热症模型进行治疗,并探索其中可能存在信号通路,为评价其作用打下实验基础。方法:将小鼠随机分为正常组、病毒组(单纯病毒感染)、模型组(高脂饮食+湿热环境+病毒感染)、阳性药物组(模型组+病毒唑)、蒿芩清胆汤组(模型组+蒿芩清胆汤)。造模成功后取小鼠肺组织,用免疫组织化学法检测肺组织切片NF-κB阳性光密度值;提取小鼠腹腔巨噬细胞用RT-PCR的方法检测其NF-κBmRNA的表达,测定各组小鼠肺指数并计算肺指数抑制率,再进行比较。结果与模型组相比,蒿芩清胆汤组的小鼠肺病变程度明显好转,肺组织NF-κB的阳性表达及腹腔巨噬细胞NF-κBmRNA的表达均明显降低,差异具有显著性(P<0.05)。结论:蒿芩清胆汤对流感病毒性肺炎湿热症疗效显著,而它是通过下调NF-κB的表达来干预肺泡内炎症反应,减少肺组织损伤从而达到治疗的目的。     

可溶性fms-样酪氨酸激酶受体-1不同基因片段对视网膜新生血管的抑制作用

Objective To investigate the inhibitory effects of fms-like typrosine kinase receptor sFh-1 on retinal neovascularization (RNV). Methods Recombinant lentivirus sFh-1 ( 2-3 ) and sFh-1 ( 2-4 )expressing the sFh-1 (2-3) and (2-4) immunoglobulin-like regions of sFh-1 were constructed. 96 seven-dayold C57/6J mice were randomly divided into 4 groups with 24 mice in each group. Group 1 : normal control;group 2: experimental control; group 3: sFlt-1(2-3); group 4: sFlt-1(2-4). The mice in group 2-4 were exposed to hyperoxia with (75±2)% O2 for 5 days and then returned to normoxia with 21% O2 ; the mice     

从肿瘤转移相关因子探讨非小细胞肺癌气虚血瘀证的病理基础

目的 观察非小细胞肺癌气虚血瘀证患者外周血中肿瘤转移相关因子的表达情况。     

TNF-α在沙漠干热环境下猪腹部肠管火器伤后肝组织中的表达

目的探讨沙漠干热环境下猪腹部肠管火器伤后肝脏组织TNF-α的表达和肝功能的变化。方法沙漠干热环境组和常温环境组健康长白仔猪各42头随机等分为对照组和伤后1、2、4、8、12 h和24 h组,实验组建立腹部火器伤肠管穿透模型后,用免疫组化及图像分析法测定各组肝脏组织内TNF-α的表达,同时测定血清中AST水平。结果伤后各组肝组织TNF-α表达明显高于对照组,沙漠干热环境组于伤后2 h和8 h出现2个高峰;常温环境组于伤后2 h和12 h出现2个高峰。血清AST水平于伤后显著增高,并于伤后2 h出现第1个高峰,沙漠干热环境组和常温环境组分别于伤后8 h和12 h出现第2个高峰。结论沙漠干热环境下腹部肠管火器伤后肝脏TNF-α的表达增加并与AST的变化趋势一致,而且峰值较常温组提前出现,提示TNF-α在腹部肠管火器伤后肝损伤过程中可能起重要作用。     

Wnt pathway in the formation of ischemic brain injury*★ Interventional pathway of basic fibroblast growth factor

BACKGROUND: Basic fibroblast growth factor (bFGF) can reduce neuronal apoptosis following ischemia/reperfusion (I/R) injury. Mechanism of the phenomenon should be elucidated. OBJECTIVE: The goal of this study was to observe the effect of bFGF on the expressions of Dickkopf-1(DKK-1) and β-catenin in the Wnt pathway in hippocampal tissue of rats following brain I/R injury, in order to investigate the role of Wnt pathway in the formation of ischemic brain injury. DESIGN: Randomized controlled experiment. SETTING: Shenyang Medical College. MATERIALS: Thirty healthy 3 months old male Wistar rats, weighing 300–350 g, were provided by the Experimental Animal Center of Shenyang Medical College. Thirty rats were randomized into sham-operation group, model group and treatment group. Goat anti-rat monoclonal antibody β-catenin was purchased from SANTA CRUZ Company. BFGF was developed by Beijing SL Pharmaceutical Co., Ltd. METHODS: This experiment was carried out in the Shenyang Medical College between November 2005 and May 2006. ①Focal brain I/R by suture-occluded method was modeled in rats in the treatment group and model group. Their middle cerebral artery was occluded 1 hour and reperfused for 24 hours. While in the sham-operation group, only the right common carotid artery and external carotid artery of rats were occluded for 90 minutes. ② The rats in the treatment group were intraperitoneally injected with 10 μg/kg bFGF, and those in the other groups were intraperitoneally injected with the same amount of saline. MAIN OUTCOME MEASURES: Following I/R 48 hours, the expressions of β-catenin and Dickkopf-1 mRNA in the neurons of hippocampal CA1 region by immunohistochemical SABC and RT-PCR. RESULTS: Following I/R 48 hours, the expressions of β-catenin and Dickkopf-1 mRNA in the neurons of hippocampal CA1 region was evaluated by means of immunohistochemical SABC and RT-PCR. ① Expression of DKK-1 mRNA in the sham-operation group was at low level, it was significantly higher in the model group compared to the sham-operation group; Expression of DKK-1 mRNA in the treatment group was significantly lower than that in the model group. ② Expression of β-catenin in the cerebral cortex and hippocampal cytoplasm of rats: The mean gray scale of β-catenin of model group was significantly lower than that of sham-operation group (74.27±2.65 vs. 111.36±5.39，P < 0.05); The mean gray scale of β-catenin of treatment group was significantly higher than that of model group (86.18±7.41 vs. 74.27±2.65, P < 0.05). CONCLUSION: bFGF may influence Wnt pathway by participating in the regulation of DKK-1 mRNA and β-catenin expressions, and thereby protect neurons.     

直肠癌Miles术后并发内疝性肠梗阻的防治(附5例报告)

目的:探讨直肠癌Miles术后内疝性肠梗阻的原因、预防和诊治.方法:对1998年1月至2006年10月间收治的直肠癌Miles术后并发内疝性肠梗阻5例进行回顾性分析.结果:Miles术后并发内疝性肠梗阻的发生率为6%(5/82),表现术后不同程度的腹胀,阵发性腹痛,呕吐,胃管引流液每天超过500 mL者,结肠造瘘口无排气排便;腹部轻压痛,肠鸣音活跃或亢进.腹部立、卧位X线片检查,均发现肠腔扩张、多个液平或孤立性肠袢扩张.5例均行剖腹探查而证实,疝内容物为回肠,其中行单纯粘连松解复位2例,部分回肠切除、端端吻合术3例.再次手术后均痊愈出院.结论:Miles术后内疝性肠梗阻常缺乏典型的临床表现,早期诊断和及时剖腹探查是处理的关键,其重点在于预防.     

27例胃肠道间质瘤外科处理分析

目的探讨不同手术方式对胃肠道间质瘤（GIST）复发及预后的影响。方法回顾性分析我科8年来收治的GIST患者临床资料，根据手术方式不同分为两组，A组为行肿瘤局部切除术者14例，B组为行肿瘤所在器官大部分切除、全切或包括淋巴结清扫的扩大切除术者12例，对两组病例进行随访，分别计算中位生存期、1年、2年和5年生存率、复发率，并对两组数据进行比较。结果A组14例中13例获得随访，中位生存时间36个月，B组12例均获得随访，中位生存时间40个月，两组比较，P〉0.05；A组1年、2年和5年生存率分别为92．3％、85．4％和69．2％，B组1年、2年和5年生存率分别为91．7％、83．3％和66．7％，两组比较，P〉0．05。说明两组手术对患者生存时间的影响无统计学意义。A组术后出现复发和转移2例，占14．3％，B组术后出现复发和转移2例，占16．7％，两组比较，P〉0．05，说明两种手术方式对复发和转移率的影响无统计学意义。结论手术切除是治疗GIST的最好方法，只要肿瘤完整切除，采用局部切除或扩大切除对术后复发和转移影响不大。     

重组肝细胞生长因子促进大鼠移植肝细胞的再生

目的探讨术后应用重组肝细胞生长因子(r HGF)对大鼠移植肝细胞再生的促进作用。方法采用改良“二袖套法”建立SD大鼠原位部分肝移植模型,受鼠分为实验组和对照组,术后经尾静脉分别给予r HGF和相同体积的生理盐水,2次/d。两个组分别在术后第1、2、4、7d时随机挑取5只大鼠处死,称取移植物湿重,采血检测血清丙氨酸转氨酶及白蛋白,流式细胞仪检测移植肝的增殖活性,免疫组织化学法检测移植肝Ki-67的表达情况。结果术后第1、2d,实验组移植物湿重较对照组同时间段明显增加;术后第4、7d,实验组血清丙氨酸转氨酶水平较对照组同时间段明显降低,而白蛋白水平较对照组同时间段明显增高;术后第2、4d,实验组的移植肝增殖指数和Ki-67表达较对照组高(P<0.05)。结论大鼠部分肝移植后使用r HGF能够明显促进移植肝细胞的再生。     

血管内皮生长因子定向转染诱导缺血心肌血管生成的研究

目的观察血管内皮生长因子（VEGF）质粒直接心肌注射对兔急性心肌缺血后侧支循环形成的影响。方法建立兔左冠状动脉结扎的急性心肌缺血模型，取缺血边缘区以先期构建的真核表达质粒pcDNA3／VEGF165和真核载体pcDNA3的DNA分别多点心肌注射，给药后2、4周取材分别行逆转录-聚合酶链反应（RT-PCR）和蛋白浓度分析、苏木素-伊红（HE）染色、VEGF染色。结果治疗组VEGF165 mRNA含量较对照组明显增多；蛋白浓度分析转染后VEGF165显著增多，高峰出现于实验后2周；治疗组缺血心肌新生血管数目明显多于对照组。结论VEGF165外源性基因能在转染心肌细胞后成功表达，促进了缺血心肌血管新生和侧支循环形成。