顺铂作用于宫颈癌HeLa细胞致细胞周期调节因子变化及对细胞周期的阻滞作用

目的：探讨细胞周期调节因子atm,chk2,p53基因在顺铂（DDP）诱导宫颈癌HeLa细胞凋亡中的作用．方法：MTY法检测梯度浓度DDP对HeLa细胞的生长抑制率,RT—PCR法和WesternBlot法检测DDP作用前后HeLa细胞atm,chk2及p53mRNA和蛋白的表达．流式细胞仪检测细胞凋亡及细胞周期的变化．结果：DDP对宫颈癌HeLa细胞的生长抑制作用具有浓度和时间依赖性．DDP作用HeLa细胞后atm,chk2,p53mRNA和蛋白的表达均增强,细胞凋亡增加,细胞周期阻滞于G2／M期（P〈0．05）．结论：atm,chk2,p53基因与细胞凋亡及G2／M期阻滞有关．干预atm,chk2,筇3基因通路有望成为宫颈癌化疗增敏的新策略．     

慢性乙肝患者HBV-DNA载量与超敏C反应蛋白及丙氨酸氨基转移酶水平的相关性分析

目的探讨慢性乙型肝炎（CHB）患者血清中HBV-DNA载量与超敏C反应蛋白（hs-CRP）及ALT水平的相关性。方法对141例慢性乙肝患者的血清采用荧光定量聚合酶链反应（FQ-PCR）检测HBV-DNA载量,免疫透射比浊法及酶速率法分别测定血清hs-CRP和ALT的水平。结果 CHB患者hs-CRP及ALT水平显著高于正常对照组（P均〈0.01）,且随肝损害程度的加重而升高（P〈0.01或P〈0.05）;不同HBV载量组间ALT及hs-CRP水平比较,差异均无统计学意义（P〉0.05）。hs-CRP及ALT水平变化与HBV-DNA载量均无相关性（r=0.137,r=0.211,P〉0.05）。结论多数CHB患者具有不同程度炎症反应,但其炎症程度与乙肝病毒复制程度无关。     

慢性高眼压青光眼动物模型的构建和鉴定

目的:建立大鼠慢性高眼压模型,观察眼压、病理和视功能改变.方法:SD大鼠45只,麻醉后使用532二极管激光行右眼角膜缘360°光凝,角膜缘激光斑为80～100个,大鼠角膜缘颞侧、颞上及颞下巩膜浅层静脉3条,每条静脉光凝3～4个斑点,功率0.45W/0.7s.左眼为对照眼,3d后测量眼压,部分眼压升高不明显者,进行同样的二次光凝.Tono-penXL眼压计监测3,7,30,60,90,180d麻醉状态下的眼压.激光术后60,180d取大鼠各5只,40g/L多聚甲醛灌注固定,摘取双侧眼球和视神经,分别进行冰冻和石蜡切片,采用HE染色、尼氏染色、甲苯胺蓝染色,光镜下观察房角变化,不同时间视网膜节细胞计数,比较视神经髓鞘密度的变化.60,180d大鼠10只,使用TEC-350V视觉电生理仪行F-VEP检查;然后6mo大鼠5只,进行逆行荧光金标记RGCs,7d后40g/L多聚甲醛灌注固定,全视网膜铺片,荧光显微镜下比较视网膜节细胞数量变化.结果:大鼠高眼压模型成功38只,平均最高眼压在激光后30d,平均值为25.0±4.1mmHg,对照眼17.1±3.2mmHg,180d时眼压基本恢复正常.病理改变:实验眼前房角明显变窄,小梁网间隙压缩、变窄,甚至部分闭锁,消失,少量梭形成纤维细胞聚集,组织致密、硬化,而小梁细胞减少,虹膜部分卷曲,水肿、肥厚出现明显异常.逆行荧光金视网膜铺片和视网膜切片尼氏染色见实验眼视网膜节细胞数量有明显的减少;尼氏染色切片每400倍视野总平均数,60d组对照眼为41±10.6个,实验眼为35±11.2个,180d组对照眼为40±9.8个,实验眼为34±11.0个,周边视网膜平均值减少最为显著,均值相差可达8个神经节细胞;180d时模型眼视神经甲苯胺蓝染色显示的髓鞘密度明显降低;视功能检查:高眼压大鼠模型60,180d的实验眼和对照眼均可引出典型的和重复性好的NPN波形,60d时实验眼AP1(N1-P1振幅)均值降低,为13.03±3.11ms,对照眼为21.14±3.10ms,两者具有显著性差异(P＜0.05),波幅值降低持续至180d仍未恢复;LP1(P1峰潜伏期)60d时无明显变化,180d时则明显延迟,实验眼为74.47±8.05μV,对照眼为59.73±4.16μV,与对照组比较有显著性差异(P＜0.05).结论:使用532-二极管激光角巩膜缘小梁网及巩膜浅层静脉光凝能成功升高眼内压,眼压升高近8mmHg;病理显示视网膜神经节细胞数显著减少,以周边视网膜为著;视神经髓鞘密度亦显著地减少;视觉电生理检测,F-VEP的AP1振幅降低,LP1波峰潜伏期延迟非常显著.     

孕期阴道炎使用妇肤康喷雾剂的疗效分析

目的:探讨孕期阴道炎使用妇肤康喷雾剂治疗的效果,以供临床工作参考。方法:将该院妇产科2011年4月~2013年3月收治的孕期阴道炎患者100例纳入本研究,根据随机数字表法将其分成两组。对照组患者接受硝呋太尔制霉素阴道软胶囊阴道局部用药治疗,实验组患者在此基础上接受妇肤康喷雾剂阴道局部喷洒治疗。连续治疗14天,随访至分娩,对比两组在近远期疗效和妊娠结局等方面的差异性。结果:与对照组对比,实验组总有效率较高,复发率较低,组间差异有统计学意义(P<0.05)。两组患者均顺利分娩,未发生一例流产、围产儿死亡、畸形等不良妊娠结局。两组剖宫产率、早产率对比,组间差异无统计学意义(P>0.05)。结论:采用妇肤康喷雾剂治疗孕期阴道炎具有满意的近远期疗效,且不会对妊娠结局产生不利影响,今后可将其在临床推广应用。     

山羊颈椎次全切除减压非融合后生物力学特性

目的 探讨山羊颈椎次全切除减压非融合后生物力学特性.方法 选取成年雄性山羊6只造模(模型组),术前行颈椎X线检查,排除骨性结构异常,并测量节段性Cobb角(SCA)和颈椎Cobb角(CCA)于C4行颈椎次全切除术,并植入可动人工颈椎(ACV).术后行颈椎正侧位X线检查,再次测量SCA和CCA.术后6个月处死山羊,并以6...     

Endoscopic features of esophageal high-grade intraepithelial neoplasia dominated by cytological atypia

Little is known about esophageal high-grade intraepithelial neoplasia dominated by cytological atypia (HGINc). We aimed to elucidate the endoscopic features of HGINc compared with esophageal high-grade intraepithelial neoplasia dominated by architectural atypia (HGINa). All patients pathologically diagnosed as esophageal high-grade intraepithelial neoplasia after endoscopic submucosal dissection at our center between January 2018 and December 2019 were included in this study. According to the pathological diagnosis, the patients were divided into two groups: HGINa group and HGINc group. Basic characteristics and endoscopic information were collected in detail. Data were analyzed statistically. Binary logistic regression was performed and a predictive model for HGINc was established. Then we evaluated its predictive value and built a nomogram for clinical application. A total of 175 patients were included in this study (126 with HGINa and 49 with HGINc). Among 228 lesions found in all patients, there were 148 HGINa and 80 HGINc. The independent relevant factors for HGINc were tobacco and alcohol usage, color, and gross type. To predict risk of HGINc, a three-factor model (TFM) was established with a highest area under curve (AUC) as 0.869 (95% CI, 0.852, 0.939). When the cut-off value was set as 0.3569184, the diagnostic accuracy, sensitivity, specificity, positive predictive value, and negative predictive value for HGINc was 81.14%, 88.75%, 77.03%, 67.62%, and 92.68%, respectively. HGINc differs greatly in endoscopic features from HGINa in our study. It’s important to reduce misdiagnosis that our model was established with good predictive value for clinical application.     

胃癌患者应用加速康复外科治疗的安全性及有效性研究

目的观察快速康复外科（FFS）治疗在胃癌手术患者中的安全性和有效性。方法80例胃癌患者行D2根治切除手术,分为两组,每组40例。传统对照组采用传统的围手术期处理方法;FTS组采用TIS程序治疗,主要措施包括缩短患者术前的禁食时间,术前口服含碳水化合物的液体,不放置鼻胃减压管,使用生物蛋白胶封闭手术创面,不放置腹腔引流管,术后早期口服饮食,加强术后止痛,尽早下床活动等。观察比较两组手术及术后住院时间、营养状态、肠道功能、并发症发生及费用等情况。结果FT组与传统对照组相比,术后住院时间缩短,治疗费用减少,术后肠排气时间提前,停止静脉输液时间提前,手术后体重下降减轻,以上指标两组差异均有统计学意义。FTS组术后并发症的发生率并未增加。结论胃癌患者按FTS治疗安全、有效,可以减少住院时间与治疗费用,加速患者的康复。     

Congenital biliary dilatation may consist of 2 disease entities

Background/Purpose

This study aims to establish the possible mechanisms of pathogenesis of congenital biliary dilatation and to classify the disease accordingly.

Methods

Radiologic features of congenital biliary dilatation and pancreaticobiliary malunion in 107 affected children were examined and correlated with laboratory results. Relative lengths/diameters were calculated to provide comparison between children of different ages. Intraluminal pressures of common bile duct (CBD) were measured intraoperatively.

Results

The minimal relative diameters of distal CBD negatively correlated with the maximal relative diameters/lengths of dilated CBD, the maximal relative diameters of common hepatic duct, and left/right hepatic ducts. The intraluminal pressure in patients with a stenotic distal CBD (stenotic group) was significantly higher than that in patients with a nonstenotic distal CBD (nonstenotic group). The narrower the distal CBD, the more deranged the liver function. Conversely, serum/bile amylase levels were more elevated in the nonstenotic group. Common channel protein plugs were only found in the nonstenotic group, whereas common hepatic duct strictures, intrahepatic duct dilatations, and calculi were detected more frequently in the stenotic group.

Conclusion

We propose to categorize congenital biliary dilatation into 2 subgroups: (1) cystic type with stenotic distal CBD associated with deranged liver function and common hepatic duct stricture and (2) fusiform type with nonstenotic distal CBD associated with pancreatitis and common channel protein plugs. Different underlying pathologies of each group require different operative strategies.     

冠心病合并糖尿病患者dTP分析及随访

目的 分析冠心病(CHD)合并糖尿病(DM)患者11脱氢血栓素B2/6-酮前列环素比值(11-dh-TXB2/6-k-PGF1a,dTP)及与主要不良心血管事件(MACE)和再住院之间的关系.方法 选择2013年7月至2014年6月270例CHD患者作为研究对象,其中136例非DM患者(非DM组),134例合并DM患者(DM组).记录患者临床情况,测量身高、体质量、血压、心率等指标,完善心电图、超声心动图、冠状动脉造影等检查.测定两组患者11-dh-TXB2和6-k-PGF1a水平,计算dTP值.随访1年,记录患者MACE事件及再次住院情况.Epdate软件建库,SPSS17.0软件进行统计分析.结果 非DM组与DM组dTP分别为1.8±0.6和2.0士0.7,差异有统计学意义(P＜0.05).对于非DM组,hs-CRP、收缩压、舒张压、冠状动脉病变数及严重病变数与dTP相关(P＜0.05).而对于DM组,hs-CRP、血糖、胆固醇水平、冠状动脉病变数及严重病变数与dTP相关(P＜0.05).随访1年,非DM组和DM组患者发生MACE事件分别为33例(24.3％)和44例(32.8％),两组比较差异无统计学意义(P＞0.05).非DM组和DM组再次住院患者分别为12例(8.8％)和24例(17.9％),两组比较差异有统计学意义(P＜0.05).发生MACE的患者与无MACE的患者住院时dTP分别为2.3±0.8和1.8±0.6,差异有统计学意义(P＜0.05).再住院患者与未再住院组患者住院时dTP分别为2.4±1.0和1.9±0.6,差异有统计学意义(P＜0.05).结论 CHD合并DM患者dTP明显增高,提示血小板明显活化,且较高的dTP增加了患者MACE事件及再次住院风险,应该强化抗血小板治疗.     

Patterns of transcription factor programs and immune pathway activation define four major subtypes of SCLC with distinct therapeutic vulnerabilities

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