膀胱移行细胞癌E2F3、miR-17-5p、miR-20a的表达及相关性分析

目的检测E2F3、miR-17-5p、miR-20a在膀胱癌中的表达情况,分析E2F3与miR-17-5p、miR-20a之间是否存在关联性。方法荧光定量RT-PCR法检测不同病理分级膀胱移行细胞癌组织和细胞系5637、T24中miR-17-5p、miR-20a和E2F3基因的表达,Western blot检测E2F3蛋白的表达。结果与正常膀胱黏膜比较,膀胱移行细胞癌组织及5637、T24细胞系中E2F3、miR-17-5p和miR-20a均高表达（P〈0.05）。E2F3表达随着病理分级的升高逐步增多,miR-20a表达随病理分级的升高有降低趋势。5637细胞系相对T24细胞系高表达E2F3（P〈0.05）。结论膀胱移行细胞癌中miR-17-5p、miR-20a和E2F3均高表达,miR-20a和miR-17-5p的表达与E2F3的增高密切相关。     

circRNA-100338通过miR-141-3p调控ZEB1对结直肠癌细胞迁移的促进作用

目的 探究circRNA-100338通过miR-141-3p调控E盒结合锌指蛋白(ZEB)1对结直肠癌(CRC)细胞迁移的促进作用。方法 收集经手术切除的CRC样本与成对癌旁组织共20对,生物信息分析CRC和癌旁组织中circRNA的表达谱,筛选表达存在高度差异的circRNA并预测与其高度匹配的miRNA。qRT-聚合酶链反应(PCR)分析CRC及癌旁组织、CRC细胞系中circRNA-100338与miR-141-3p的相对表达,分析circRNA-100338与miR-141-3p在CRC中的相关性。TargetScanHuman预测ZEB1和miR-141-3p的结合位点,双荧光素酶报告基因检测分析circRNA-100338、ZEB1和miR-141-3p的靶向调节关系。SW620细胞分为对照组、阴性对照组、si-100338组和si-100338+miR-141-3p-inhibitor组,CCK-8法、划痕实验、Transwell实验检测细胞增殖、迁移、侵袭能力,Western印迹检测CRC及癌旁组织ZEB1和各组细胞ZEB1、E-钙黏蛋白(cadherin)、波形蛋白...     

急性心肌梗死病人PCI术后血清miR-135b-3p、miR-375-3p相对表达水平及其与主要不良心血管事件发生的关系

目的:分析急性心肌梗死(AMI)病人行经皮冠状动脉介入(PCI)术后血清miR-135b-3p、miR-375-3p相对表达水平及其与主要不良心血管事件(MACE)发生的关系。方法:选取2018年1月—2021年1月我院收治的150例因患AMI进行PCI术的病人,同时选取同期100名健康体检者为对照组。采用荧光定量聚合酶链式反应(PCR)检测血清miR-135b-3p、miR-375-3p表达水平;采用Pearson法分析血清miR-135b-3p、miR-375-3p水平及其与临床资料的相关性;受试者工作特征(ROC)曲线评价血清miR-135b-3p、miR-375-3p对AMI病人PCI后发生MACE的预测价值。结果:相较于对照组,试验组血清miR-135b-3p、miR-375-3p水平显著升高(P<0.05)。与非MACE组相比,MACE组C反应蛋白(CRP)、白细胞介素(IL)-1β、IL-6、IL-8、肿瘤坏死因子-α(TNF-α)、miR-135b-3p、miR-375-3p水平显著上升(P<0.05)。AMI病人血清miR-135b-3p与miR-375-...     

miR-17-5p、miR-17-3p和miR-20a-5p在胃间质瘤中表达

目的探讨miR-17-5p、miR-17-3p及miR-20a-5p在胃间质瘤(gastric stromal tumor,GST)中的差异表达及其与临床病理因素的关系。方法提取正常胃组织及GST组织共72例标本的总RNA,应用Real time RT-PCR方法检测miR-17-5p、miR-17-3p及miR-20a-5p的表达,用SPSS 19.0分析其与临床病理因素的关系及3个miRNA间的相关性。结果在GST中,miR-17-3p、miR-17-5p在肿瘤组织中表达较胃正常组织低(P0.001),但是在低危组和中高危组GST中表达差异无统计学意义(P0.05);miR-20a-5p表达在胃正常组织、低危组和中高危组之间均有差异表达,且随着恶性度的增加而下降(P0.001),3种miRNA的表达水平与肿瘤的侵袭、转移、年龄、肿瘤最大直径和核分裂象密切相关,而与瘤体是否破溃无关。结论 miR-17-5p、miR-17-3p、miR-20a-5p在GST中下调并相互作用可能是促进GST发生、发展因素之一。     

miR-152-3 p靶蛋白差异表达及调控机制在肝癌复发中的作用

目的比较肝癌复发与预后良好患者癌组织的蛋白表达,分析miR-152-3p相关的靶蛋白差异及调控机制,探讨miR-152-3p在肝癌复发中的作用。方法应用TMT标记全蛋白质组学测序方法和RT-PCR分别检测肝癌切除术后2年复发(n=6)与5年预后良好(n=6)患者肝癌组织的蛋白质表达和miR-152-3p的表达水平;联合六大数据库检索分析miR-152-3p靶基因,并运用Gene Ontology、DAVID和REACTOME数据库进行靶基因筛选、富集注释和信号转导通路富集分析;将筛选的miR-152-3p靶基因进行基因突变频率和生存曲线分析,验证miR-152-3p靶基因在肝癌复发中的作用。计量资料2组间比较采用独立样本t检验。肝脏组织有关基因生存率分析采用Kaplan-Meier分析。结果肝癌切除术后预后良好患者癌组织的miR-152-3p转录表达水平显著高于复发患者癌组织的水平(P<0.05)。蛋白测序结果显示,预后良好患者与复发患者的癌组织存在365个差异表达蛋白,联合肝癌复发数据库分析显示,其中有17个蛋白受miR-152-3p调控。进一步的信号通路分析发现,17个受miR-152-3p调控的靶基因其功能集中于线粒体核糖体翻译调控;多重富集发现靶基因与线粒体呼吸链复合体密切关系的蛋白6个,分别为AKAP1、FOXRED1、MRPL28、MRPL50、SHC1、STAU1。基因突变频率及生存曲线分析发现,线粒体呼吸链相关靶蛋白的功能缺失或减弱会严重影响患者的生存率。结论miR-152-3p在HCC切除术后预后良好和复发患者的癌组织表达差异显著,miR-152-3p在肝癌复发中作用机制可能是通过调控靶基因AKAP1、FOXRED1、MRPL28、MRPL50、SHC1、STAU1作用于线粒体呼吸链,影响细胞氧化呼吸功能导致肝癌复发。     

血浆miR-1228-5p、miR-34a-5p、miR-192-5p和miR-30a-3p水平与早发冠心病的相关性及其初筛价值

目的]探讨血浆miR-1228-5p、miR-34a-5p、miR-192-5p和miR-30a-3p水平与早发冠心病(PCAD)的相关性及其对PCAD的初筛价值。[方法]根据纳入标准及排除标准,纳入6例明确诊断的PCAD患者作为PCAD组,纳入6例健康受试者作为对照组,收集PCAD组和对照组血液,提取血清样本并保存,使用DNBseq平台检测两组血清中miRNA水平,筛选差异水平显著的miRNA。根据纳入标准及排除标准,收集78例PCAD患者、75例晚发冠心病患者和69例健康对照者的血液并对筛选的miRNA进行实时荧光定量PCR验证。分析PCAD患者冠状动脉造影报告,采用Gensini评分评估冠状动脉病变的严重程度。Spearman相关性检验分析有关miRNA水平与冠状动脉狭窄程度的相关性。ROC曲线分析血浆miR-1228-5p、miR-34a-5p、miR-192-5p及miR-30a-3p水平对PCAD的诊断价值,多因素Logistic回归分析PCAD发生的影响因素。[结果]DNBseq平台分析显示,差异表达miRNA 33个,其中上调miRNA 17个,下调miRNA 16个,差异水平最为显著的5个miRNA分别为miR-1228-5p、miR-34a-5p、miR-192-5p、miR-424-3p和miR-30a-3p;实时荧光定量PCR结果显示,与对照组相比,PCAD患者血浆miR-1228-5p升高1.7倍,miR-34a-5p升高1.4倍,miR-192-5p升高0.7倍,miR-30a-3p升高2.5倍(P＜0.05),两组间血浆miR-424-3p水平差异无统计学意义(P＞0.05);血浆miR-1228-5p和miR-34a-5p水平与PCAD患者冠状动脉狭窄程度均呈正相关(r＝0.307,P＝0.004;r＝0.238,P＝0.036);ROC曲线分析显示,miR-1228-5p、miR-34a-5p、miR-192-5p和miR-30a-3p诊断PCAD的ROC曲线下面积分别为0.903、0.832、0.731及0.798,其联合诊断PCAD的ROC曲线下面积为0.990,95%CI为0.976～1.000。[结论]PCAD患者血浆miR-1228-5p、miR-34a-5p、miR-192-5p和miR-30a-3p水平显著升高,其联合检测诊断PCAD具有较高的准确性,有望成为初筛PCAD的新型生物标志物。     

LncRNA ZEB2-AS1调控miR-574-3p/ZEB1轴对卵巢癌细胞迁移及侵袭的影响

目的 探讨长链非编码核糖核酸(LncRNA)锌指E盒结合同源盒蛋白2反义RNA(LncRNA ZEB2-AS)1对卵巢癌细胞迁移、侵袭的影响及可能的作用机制。方法 体外培养人卵巢癌细胞(SKOV3、SW626、A2780)和正常人卵巢上皮细胞(HOSEpiC),实时荧光定量聚合酶链反应(RT-qPCR)检测细胞中ZEB2-AS1、miR-574-3p和锌指E盒结合蛋白(ZEB)1的水平。取对数生长期的SW626细胞，分为对照组、pcDNA3.1-NC组、pcDNA3.1-ZEB2-AS1组、si-NC组、si-ZEB2-AS1组、si-ZEB2-AS1+inhibitor-NC组、si-ZEB2-AS1+miR-574-3p inhibitor组。qRT-PCR检测细胞中ZEB2-AS1、miR-574-3p表达，噻唑蓝(MTT)法检测细胞增殖活性；划痕实验检测细胞迁移能力；Transwell实验检测细胞侵袭能力；Western印迹检测细胞ZEB1和迁移、侵袭相关蛋白的表达；双荧光素酶报告基因检测验证ZEB1与miR-574-3p的靶向关系。结果 与正常人卵巢上皮细胞HOSEpiC相比...     

浸润性乳腺癌组织中14-3-3σ、p73α蛋白表达及临床意义

目的探讨表皮细胞特异性标志物14-3-3σ、p73α蛋白在浸润性乳腺癌发生发展中的作用。方法选择我院手术切除的浸润性乳腺癌组织标本94份（浸润癌组）,导管原位癌15份（原位癌组）,上皮不典型增生15份（不典型增生组）,导管内乳头状瘤15份（乳头状瘤组）,乳腺增生症20份（增生症组）,乳腺癌旁5 cm组织10份（癌旁组）,采用免疫组化PV-9000两步法检测各组14-3-3σ、p73α蛋白表达情况,并分析两者间及与浸润性乳腺癌临床病理特征的相关性。结果浸润癌组14-3-3σ蛋白阳性率明显低于其余各组,p73α蛋白阳性率明显高于其余各组,P均〈0.05。14-3-3σ蛋白阳性表达与乳腺癌腋窝淋巴结转移、HER-2受体、组织学分级、TNM分期相关,p73α蛋白与腋窝淋巴结转移、ER受体、PR受体、TNM分期相关。14-3-3σ与p73α蛋白表达呈负相关。结论 14-3-3σ和p73α蛋白与浸润性乳腺癌的发生发展相关,两者联合检测可为乳腺癌早期诊断和治疗提供参考。     

miR-221-3p在下肢缺血性疾病中的表达变化

目的探讨miR-221-3p在下肢缺血性疾病中的表达变化。方法临床试验:收集西南医科大学附属医院血管甲状腺外科2014年至2015年间55例动脉硬化闭塞症(ASO)患者和54例健康对照人群血浆,24例ASO截肢患者的正常血管及病变血管。选取3对年龄、性别相近的ASO患者和正常健康人血浆用Microarray筛选出ASO患者血浆中差异性表达在2倍以上的24种microRNA,其中miR-221-3p的表达量明显降低。用实时荧光定量PCR检测临床55例ASO患者和54例健康对照人群血浆及24例ASO截肢患者正常血管和病变血管中miR-221-3p的表达量。动物实验:选取SD大鼠,结扎组分离结扎大鼠股动脉制备下肢缺血模型,假手术组仅暴露分离股动脉不做结扎。分别于术前、术后即刻、术后7天、49天行激光多普勒扫描监测下肢皮肤血流变化。于术后7天、49天行激光多普勒扫描后处死各组大鼠,收集大鼠术侧腓肠肌及下腔静脉血,采用实时荧光定量PCR检测各组血浆和腓肠肌内miR-221-3p的表达量。结果临床试验显示:与健康对照组相比,ASO患者血浆中miR-22-3p的含量明显降低(1.078±0.119比0.617±0.121);与正常血管相比,病变血管中miR-221-3p的表达量也明显降低(1.017±0.113比0.625±0.136)。动物实验显示:与假手术组相比,结扎组7天时血浆和腓肠肌内miR-221-3p的含量明显降低(血浆1.04±0.07比0.31±0.07、腓肠肌1.01±0.07比0.64±0.09),49天时miR-221-3p的含量有所上升但仍低于对照组。结论 miR-221-3p在下肢缺血性疾病中明显降低,有望成为下肢缺血性疾病一个新的诊断方式及治疗靶点。     

Pathogenesis of carcinoma of the papilla of Vater

Most adenomas and carcinomas of the small intestine and extrahepatic bile ducts arise in the region of the papilla of Vater. In familial adenomatous polyposis (FAP) it is the main location for carcinomas after proctocolectomy. In many cases symptoms due to stenosis lead to diagnosis at an early tumor stage. In about 80%, curative intended resection is possible. Operability is the most relevant prognostic factor. Most ampullary carcinomas resp. carcinomas of the papilla of Vater develop from adenomatous or flat dysplastic precursor lesions. They can be sited in the ampulloduodenal part of the papilla of Vater, which is lined by intestinal mucosa. They also can develop in deeper parts of the ampulla, which are lined by pancreaticobiliary duct mucosa. Intestinal-type adenocarcinoma and pancreaticobiliary-type adenocarcinoma represent the main histological types of ampullary carcinoma. Furthermore, there exist unusual types and undifferentiated carcinomas. Many carcinomas of intestinal type express the immunohistochemical marker profile of intestinal mucosa (keratin 7?, keratin 20+, MUC2+). Carcinomas of pancreaticobiliary type usually show the immunohistochemical profile of pancreaticobiliary duct mucosa (keratin 7+, keratin 20?, MUC2?). Even poorly differentiated carcinomas, as well as unusual histological types, may conserve the marker profile of the mucosa they developed from. These findings underline the concept of histogenetically different carcinomas of the papilla of Vater which develop either from intestinal- or from pancreaticobiliary-type mucosa of the papilla of Vater. Molecular alterations in ampullary carcinomas are similar to those of colorectal as well as pancreatic carcinomas, although they appear at different frequencies. In future studies, molecular alterations in ampullary carcinomas should be correlated closely with the different histologic tumor types. Consequently, the histologic classification should reflect the histogenesis of ampullary tumors from the two different types of papillary mucosa.     

Demonstration of the mechanism of action of biguanides

Summary Palmitic acid oxidation in rat diaphragm homogenate is depressed by biguanide concentrations that are still incapable of inhibiting oxidative phosphorylation. Glucose oxidation is not directly effected by the same biguanide concentrations: however, the inhibitory effect of palmitic acid on glucose oxidation is partly removed by biguanides. Inhibition of fatty acid oxidation, which accounts for most of the metabolic effects caused by these drugs, can be regarded as the fundamental mechanism of action of biguanides. There is some evidence suggesting that these drugs might interact with carnitine, thus preventing long-chain fatty acids from being transported across the mitochondrial membrane to the site of oxidation. Traduzione a cura degli AA.     

胰岛素瘤的解剖分布特点分析

目的胰岛素瘤是最常见的胰腺神经内分泌肿瘤，因其临床表现多样，导致诊断困难。影像学诊断尤其是超声内镜(EUS)在胰岛素瘤的诊断中起着重要作用，拥有较高的敏感性和特异性。本研究拟通过明确胰岛素瘤的解剖分布特点，以期有助于提高影像学的诊断准确率和降低漏诊率，尤其是在教育和培训实践中对于EUS的学习者更具有指导价值。 方法回顾性分析解放军总医院第一医学中心病案资料数据库1993年1月至2019年11月经外科手术、病理确诊为胰岛素瘤的患者的临床资料，检索方法采取搜索术后病理诊断为"胰岛素瘤"的病例，通过查阅病例的方法，提取出胰岛素瘤的大小和解剖分布等数据，进一步分析其特点。 结果共检索到确诊为胰岛素瘤的患者116例，其中，男45例、女71例，年龄13～76岁，平均年龄(44.4±14.85)岁。胰岛素瘤单发110例(94.8%)、多发6例(5.2%)。位置分布：头颈部46例(39.7%)，单发45例、多发1例；体尾部68例(58.6%)，单发65例、多发3例；全胰腺多发2例(1.7%)。病变大小特点：最大径0.4～3.4 cm，平均大小(1.53±0.58)cm。≤1 cm 29例、>1 cm而≤1.5 cm41例、>1.5 cm而≤2.0 cm28例，≤3 cm 15例，>3 cm 3例。年龄与肿瘤的大小相关，≤44岁患者肿瘤平均大小为(1.36±0.51)cm、>44岁患者肿瘤平均大小为(1.70±0.60)cm，P<0.05。头颈部的肿瘤大于体尾部的肿瘤，头颈部肿瘤平均大小(1.66±0.63)cm，体尾部(1.42±0.52)cm，P<0.05。 结论胰岛素瘤在胰腺体尾部较头颈部更好发；绝大多数单发，但可以全胰腺多发；多数小于1.5 cm，肿瘤的大小与患者年龄和肿瘤的解剖分布相关。     

氯硝柳胺悬浮剂的毒性评价

目的评价氯硝柳胺悬浮剂的毒性，为现场大规模应用灭螺提供依据。方法按照中华人民共和国国家标准GB 15670-1995《农药登记毒理学试验方法》和鱼类毒性试验方法进行。结果经口、经皮肤的LDso雌、雄性大鼠均>5 000 mg/kg，经呼吸道的LCso雌、雄性大鼠均>5 000mg/m3，该药经口、经皮肤、经呼吸道毒性均属微毒类药物；兔眼用药后，观察期内无不良反应，对眼无刺激性；皮肤用药后对皮肤无刺激性。与氯硝柳胺原药、氯硝柳胺乙醇胺盐原药和氯硝柳胺乙醇胺盐可湿性粉剂相比，氯硝柳胺悬浮剂对鱼急性毒性最低。结论氯硝柳胺悬浮剂属微毒类药物，对鱼的毒性低于其乙醇胺盐可湿性粉剂，适合于现场应用。     

Lack of correlation of degree of villous atrophy with severity of clinical presentation of coeliac disease

BACKGROUND AND AIM: Both the clinical presentation and the degree of mucosal damage in coeliac disease vary greatly. In view of conflicting information as to whether the mode of presentation correlates with the degree of villous atrophy, we reviewed a large cohort of patients with coeliac disease. PATIENTS AND METHODS: We correlated mode of presentation (classical, diarrhoea predominant or atypical/silent) with histology of duodenal biopsies and examined their trends over time. RESULTS: The cohort consisted of 499 adults, mean age 44.1 years, 68% females. The majority had silent coeliac disease (56%) and total villous atrophy (65%). There was no correlation of mode of presentation with the degree of villous atrophy (p=0.25). Sixty-eight percent of females and 58% of males had a severe villous atrophy (p=0.052). There was a significant trend over time for a greater proportion of patients presenting as atypical/silent coeliac disease and having partial villous atrophy, though the majority still had total villous atrophy. CONCLUSIONS: Among our patients the degree of villous atrophy in duodenal biopsies did not correlate with the mode of presentation, indicating that factors other than the degree of villous atrophy must account for diarrhoea in coeliac disease.     

血吸虫童虫生长发育及其机制的研究进展

血吸虫童虫是宿主免疫系统攻击的重要靶标,包括皮肤型、肺型和肝门型童虫。宿主分子对童虫生长发育具有重要作用。童虫生长发育机制包括免疫调节、信号转导、性别发育及凋亡等。肌动蛋白、组织蛋白酶、烯醇化酶和葡萄糖基转移酶等分子为血吸虫童虫生长发育的重要分子。本文对血吸虫童虫生长发育及其机制的研究进展做一综述。     

124例耐多药结核分枝杆菌基因突变特征分析

目的对临床分离的耐多药结核分枝杆菌相关基因的突变特征进行分析。方法对124例耐多药结核分枝杆菌以及50株敏感株的耐药相关基因(包括异烟肼inh A、kat G、oxyR-ahp C间隔区以及利福平rpo B)进行序列测定,分析其基因突变情况。结果异烟肼耐药inh A基因突变率为14.5%;kat G基因突变率为70.2%(87/124),主要位于315位;oxyR-ahp C间隔区突变率为15.3%;inh A、kat G两种基因同时突变率75.0%,三种基因同时突变率为89.5%。利福平rpo B基因突变的检出率高达95.2%,突变主要发生在531、526、516位点。结论我省耐多药菌异烟肼耐药相关基因最常见突变为kat G 315、inh A C-T(-15)、axyR-ahp C间隔区(-10)C-T,利福平为rpo B531、526、516。结合MDR-TB耐药相关基因的特征分析,可以建立一种快速、准确、特异的适合于我省的检测结核菌耐多药性的新方法。     

Assessment of quality of life of parents of children with juvenile chronic arthritis

The aim of the study was to assess the quality of life (QOL) and the psychological status of parents of children with juvenile chronic arthritis (JCA). The QOL, anxiety and depression of the parents of 28 children with JCA were evaluated and compared to those of the parents of 28 healthy children. Mothers of JCA children and mothers of healthy children reported similar QOL. The reported anxiety and depression levels were similar for mothers and fathers in both groups. The parents of children with pauciarticular-type JCA reported lower QOL and higher levels of anxiety and depression than the parents of children with other types, namely polyarticular and systemic JCA. These findings may be explained by the fact that the pauciarticular patients had shorter disease duration and were less frequently seen in the outpatient clinic. The QOL of mothers of children with JCA was found to be slightly impaired in the group of children with pauciarticular JCA. Future larger studies are needed to confirm these results, as the number of subjects in the three groups was rather low. Received: 26 September 2001 / Accepted: 8 February 2002     

CagA-Hp抗体IgG与胃炎的组织学分析

研究幽门螺杆菌(Hp)感染与胃炎的关系。方法对204例慢性胃炎患者胃粘膜进行观察分析,并测定其中137例Hp阳性患者血清CagA-Hp抗体IgG水平,与组织学对照。结果慢性萎缩性胃炎伴肠上皮化生患者血清CagA抗体IgG明显高于对照组(P＜0.01);其他类型胃炎患者血清CagA抗体IgG水平无明显增高(P＞0.05)。结论CagA-Hp可能是导致慢性萎缩性胃炎伴肠上皮化生的因素之一,对这类患者应密切随访观察。     

慢阻肺急性加重期患者预后的影响因素分析

目的探讨慢性阻塞性肺病急性加重期(AECOPD)患者预后的相关危险因素。方法回顾性调查、收集58例AECOPD患者可能影响其预后的相关因素,并对其分别进行单因素分析。并进行Logistic多元逐步回归进行多因素分析,筛选影响AECOPD患者预后的独立危险因素。结果单因素分析后将结果 P0.1的因素纳入多因素Logistic回归,分析发现是否合并呼吸衰竭、气促程度、白细胞计数、APACHEⅡ、应用抗氧化剂、慢阻肺治疗依从性为影响AECOPD患者预后不佳的独立因素(P0.05)。结论根据AECOPD患者预后的独立危险因素,及早判断,选择合适的后续治疗方案,对提高其生存率及生存质量具有重要意义。