凝血栓蛋白1基因异常甲基化与大肠腺癌关联

目的 探讨凝血栓蛋白l（THBS1）基因启动子CpG岛异常甲基化与大肠腺癌及其临床病理特征的关联。方法 THBS1基因甲基化状态用甲基化特异性PCR检测。结果 大肠腺癌、癌旁组织中，THBSI基因启动子cpG岛甲基化率的差异有显著性（X^2=5．93，P=0．025）；老年患者肿瘤组织中THBS1基因甲基化率明显商于非老年患者（X^2=5.68，P=0．017），直径≥3cm的肿瘤组织中THBSl基因甲基化率显著高于直径〈3cm的肿瘤（X^2=4．16，P=0．041），C期和D期肿瘤组织中THBS1基因甲基化率显著高于A期或B期肿瘤（X^2=8．04，u=2，P=0．018）。结论 THBS1基因甲基化与大肠腺癌的发生有关，肿瘤以老年、晚期和直径较大的肿瘤多见。     

老年人食管癌的外科治疗

1材料和方法1.1研究对象1999年3月至2003年2月的238例食管癌根治手术患者,男157例,女81例。年龄60～84岁,平均(66±3.5)岁。其中年龄≥70岁患者36例,包括男24例,女12例,平均(75±3.4)岁。病变长度2.5～8cm。病变位于食管上段19例,中段141例,下段78例。病理类型:鳞癌206例,腺癌2     

Egr-1基因剔除减少炎性相关因子在实验性胰腺炎中的表达

目的：探讨Egr-1基因剔除对实验性胰腺炎小鼠胰腺组织中炎性相关因子表达的影响。 〖HTH〗方法：利用Egr-1基因剔除小鼠，采用大剂量雨蛙素诱导的实验性胰腺炎模型，观察Egr-1基因剔除后，胰腺组织水肿、MPO水平、血清淀粉酶水平、肺组织MPO水平的改变。并利用定量PCR的方法，检测胰腺组织中炎症相关因子组织因子（TF）、纤维蛋白溶酶原激活因子抑制因子（PAI-1）、单核细胞趋化吸引蛋白1（MCP-1）、Gro-1、IL-6和细胞间黏附分子-1（ICAM-1） mRNA的表达。 〖HTH〗结果：Egr-1基因剔除小鼠胰腺组织水肿明显轻于野生型，但组织MPO水平与血清淀粉酶与野生型组间相比无明显差异；肺组织MPO水平明显低于野生型。定量PCR检测结果表明， Egr-1基因剔除组，胰腺组织中TF、PAI-1，以及MCP-1、ICAM-1和IL-6　mRNA的表达，明显少于野生型组。 〖HTH〗结论：Egr-1基因剔除可明显减轻急性胰腺炎的严重程度，其作用可能通过减少胰腺组织中TF、PAI-1，以及MCP-1、ICAM-1和IL-6的表达而实现。     

上田法和电脑中频协同治疗脑性瘫痪

目的探讨上田法和电脑中频协同治疗小儿脑性瘫痪(脑瘫)的疗效。方法观察和评定上田法和电脑中频协同治疗小儿脑瘫60例的疗效;收集和评定此前本科单用上田法治疗小儿脑瘫56例的疗效,比较两者连续治疗4个疗程(120 d)后疗效。结果上田法和电脑中频联用总有效率96.7%,单用上田法总有效率82.1%,两者比较有显著性差异(P<0.05)。结论上田法和电脑中频协同治疗小儿脑瘫有显著疗效。     

F630028O10Rik-siRNA对链脲佐菌素诱导的大鼠糖尿病肾病损伤保护作用

目的 探究F630028O10Rik-siRNA对链脲佐菌素(STZ)诱导的大鼠糖尿病肾病(DN)损伤的保护作用及其机制.方法 将30只经STZ(55 mg/kg)注射处理后,造模成功的DN大鼠,随机平均分为模型组、空载体组和F630-siRNA组,10只未造模大鼠设为空白组.F630-siRNA组和空载体组分别注射200μl F630-siRNA(5×108 TU/ml)慢病毒载体和F630空载体.采用生化分析仪检测空腹血糖(FBG)、24 h尿蛋白(mAlb)、血肌酐(Src)、血尿素氮(BUN),ELISA法检测血清中白细胞介素-6(IL-6)、白细胞介素-1β(IL-1β)和瘤坏死因子-α(TNF-α)含量,Western blot检测肾组织中NF-κB通路和肾脏纤维化相关蛋白水平.结果 与空载体组比较,F630-siRNA组大鼠FBG、mAlb、Src和BUN水平明显下降,血清中IL-6、IL-1β和TNF-α含量,肾脏中IKKα/β、p-p65、p-IκBα、TGF-β1和α-SMA水平均显著下调(P值均＜0.05).模型组、空载体组和F630-siRNA组各项指标均高于空白组(P值均＜0.05);模型组与空载体组差异均无统计学意义(P值均＞0.05).结论 F630028O10Rik-siRNA可能通过抑制NF-κB通路激活,抑制炎症因子的表达和改善肾纤维化,实现对糖尿病肾病大鼠的肾损伤保护.     

自贡市2016-2021年布鲁氏菌病暴发疫情特征分析

目的 分析自贡市2016-2021年布鲁氏菌病暴发疫情特点,为非牧区布病聚集性疫情控制提供依据。方法 对2016-2021年自贡市布鲁氏菌病暴发进行现场调查,筛查重点及高危人群和涉及牲畜,分析疫情发生原因及特点,采取相应控制措施。结果 2016-2021年共报告4起布鲁氏菌病本地暴发疫情,涉及20例患者。病例共同暴露者筛查阳性率14.67%(11/76),畜间血清学筛查阳性率16.67%(19/114);MLVA分析显示分离到菌株与北京、宁夏分离菌株同源性为90.6%。结论 2016-2021年自贡布病疫情传染源均为病羊,食用未煮熟羊肉、私下引种(交易)山羊及无防护屠宰加工是引起布鲁氏菌病暴发的主要原因,应强化国内重点地区牲畜引种、畜产品交易的检疫力度,加强对职业人群的监测工作,开展重点人群的知识宣传。     

胸膜结核球68例临床分析

目的探讨胸膜结核球的临床特征。方法分析我院收治68例胸膜结核球临床资料。结果 68例中男性37例,女性31例,平均年龄32岁,不正规化疗和未及时抽出胸水者62例,患者以咳嗽、胸闷及胸痛为常见症状,无症状者21例,胸CT示单发者61例,多发者7例;病灶与胸膜呈"D"字型类圆形59例,圆形6例,密度不均匀45例。病理检查:68例行CT定位下经皮穿刺活检62例,符合结核性病理改变49例。治疗及转归:54例患者继续原方案治疗,其中5例患者治疗过程出现病灶增大合并极少量胸腔积液,经抗结核治疗一月余病灶明显缩小,胸腔积液吸收;8例患者调整抗结核方案治疗;6例患者行胸腔镜手术治疗;全部病例经抗结核治疗并延长疗程,停药后两年门诊随访均未出现复发。结论胸膜结核球是结核性胸膜炎发生、发展与转归的一个重要过程。     

脑深部电刺激治疗运动障碍性疾病的疗效观察

目的探讨脑深部电刺激（DBS）治疗运动障碍性疾病（MD）的疗效及安全性。方法对49例运动障碍性疾病的患者进行丘脑底核（STN）、苍白球内侧部（Gpi）、丘脑腹中间核（Vim）刺激电极植入术,术前采用1.0 TMR和3.0 TMR T2加权靶点扫描,在直视下行靶点直接定位。手术前后应用统一帕金森病评分量表评分（UPDRS）及Burke Fahn-Marsden运动障碍评分（BFMs）评价临床效果。结果本组手术前帕金森病患者UPDRS：药物＂关＂状态25-80分,平均55分;药物＂开＂状态19-53分,平均34分。术后在开机的情况下UPDRS：药物＂关＂状态17-24分,平均22分,改善率60.0%;药物＂开＂状态15-24分,平均19分,改善率44.0%。4例肌张力障碍患者BFMs平均改善率55.0%。41例患者术后症状迅速改善,肌张力降低,震颤及异动症消失。结论DBS能明显改善MD患者的临床症状,改善其生活质量,且具有安全性。     

Prenatal inflammation exposure-programmed hypertension exhibits multi-generational inheritance via disrupting DNA methylome

The multi-generation heredity trait of hypertension in human has been reported, but the molecular mechanisms underlying multi-generational inheritance of hypertension remain obscure. Recent evidence shows that prenatal inflammatory exposure (PIE) results in increased incidence of cardiovascular diseases, including hypertension. In this study we investigated whether and how PIE contributed to multi-generational inheritance of hypertension in rats. PIE was induced in pregnant rats by intraperitoneal injection of LPS or Poly (I:C) either once on gestational day 10.5 (transient stimulation, T) or three times on gestational day 8.5, 10.5, and 12.5 (persistent stimulation, P). Male offspring was chosen to study the paternal inheritance. We showed that PIE, irrespectively induced by LPS or Poly (I:C) stimulation during pregnancy, resulted in multi-generational inheritance of significantly increased blood pressure in rat descendants, and that prenatal LPS exposure led to vascular remodeling and vasoconstrictor dysfunction in both thoracic aorta and superior mesenteric artery of adult F2 offspring. Furthermore, we revealed that PIE resulted in global alteration of DNA methylome in thoracic aorta of F2 offspring. Specifically, PIE led to the DNA hypomethylation of G beta gamma (Gβγ) signaling genes in both the F1 sperm and the F2 thoracic aorta, and activation of PI3K/Akt signaling was implicated in the pathologic changes and dysregulated vascular tone of aortic tissue in F2 LPS-P offspring. Our data demonstrate that PIE reprogrammed DNA methylome of cells from the germline/mature gametes contributes to the development of hypertension in F2 PIE offspring. This study broadens the current knowledge regarding the multi-generation effect of the cumulative early life environmental factors on the development of hypertension.     

大鼠肝细胞生长因子与肝再生增强因子融合基因真核表达质粒的构建及鉴定

Objective To construct and identify an eukaryotic expression plasmid containing rat hepatocyte growth factor(rHGF)gene and rat augmenter of liver regeneration(rALR)gene,so that to provide experimental basis for developing new treatments of hepatic fibrosis.Methods The gene fragments of rHGF and rALR were amplified from recombinant prokaryotic plasmid pUC18-rHGF and pUC18-rALR by polymerase chain reaction(PCR),respectively,then were spliced by overlap extension PCR with a linker,and the fusion gene rHGF-linker-rALR was constructed.The fusion gene was directionally inserted into the eukaryotic expression plasmid pcDNA3.1 between restriction sites of Kpn Ⅰ and Xba Ⅰ to construct the recombinant eukaryotic expression plasmid pcDNA3.1-rHGF-linker-rALR,and the new constructed recombinant plasmid was identified by double restriction digestion and DNA sequencing.Results DNA fragments of 2200 bp and 400 bp were observed after the electrophoresis of products amplified from recombinant prokaryotic plasmid pUC18-rHGF and pUC18-rALR,respectively,which was consistent with the theoretical value.The electrophoresis of fusion gene rHGF-linker-rALR obtained by overlap extension PCR technique showed only a 2 600 bp DNA fragment,which was in accordance with the expected value.Electrophoresis of products of pcDNA3.1-rHGF-linker-rALR digested with Kpn Ⅰ and Xba Ⅰ showed two DNA fragments with 2600 bp and 5400 bp,which were both consistent with the expected value.The sequences were confirmed correctly by DNA sequencing.Conclusion The recombinant eukaryotic expression plasmid pcDNA3.1-rHGF-linker-rALR is successfully constructed,which provides experimental basis for developing gene therapy of hepatic fibrosis.