兔失血性休克及缺血──再灌流后血浆TXA_2与PGI_2含量的变化

复制失血性休克模型，采集休克前后及缺血──再灌流后颈动脉血液样本，利用放射免疫方法，测定血浆ＴＸＢ２和６—ｋｅｔｏ—ＰＧＦ１α含量变化。结果显示休克以及再灌后血浆ＴＸＢ２和６—ｋｅｔｏ—ＰＧＦ（１α）明显高于休克前水平（Ｐ＜０．０１或Ｐ＜０．０５），但再灌期与休克期相比，无显著性差异（Ｐ＞０．０５），ＴＸＢ２／６—ｋｅｔｏ—ＰＧＦ（１α）比值于休克及再灌后下降（Ｐ＜０．０５），但再灌期与休克期相比无显著性差异（Ｐ＞０．０５）。将休克前后、休克与再灌后血浆ＴＸＢ２和６—ｋｅｔｏ—ＰＧＦ１α的变化进行分析，两者无相关性（分别为ｒ＝０．１６６６和ｒ＝—０．４４０９）。本研究表明，单纯的输血输液不能明显地改善休克状态。至于休克及再灌后ＰＧＩ２变化的机理及其在休克中的作用，值得重新认识和深入探讨。     

放射性肝纤维化过程的定量研究

经＾６０Ｃｏγ线照射大鼠肝区，通过光镜、电镜和图像分析仪、宣研究了照后１年肝脏的病理改变。结果表明，３０Ｇｙ组在照射后１年内逐渐发生了放射性肝纤维化病变。在肝纤维化发生过程中，肝细胞内糖原颗凿含量进行性减少，间质中胶原纤维含量进行性增加，网状纤维于照射１－３个月呈进行性增加。     

接受IVF-ET治疗蒙古族与汉族女性主要临床及实验室指标的比较

摘要：目的：分析接受IVF-ET治疗蒙古族与汉族女性主要临床及实验室指标的差异。方法：回顾性分析2016年1月至2019年12月在内蒙古医科大学附属医院生殖医学中心接受IVF助孕新鲜胚胎移植2597个周期与冻融胚胎移植2611个周期患者临床资料,根据女性民族不同分为新鲜胚胎移植蒙古族组302个周期、新鲜胚胎移植汉族组2295个周期;冻融胚胎移植蒙古族组320个周期、冻融胚胎移植汉族组2291个周期,分别统计新鲜胚胎移植与冻融胚胎移植中民族差异对患者妊娠结局的影响。 结果：新鲜胚胎移植中,蒙古族就诊患者原发不孕比例、优质胚胎率高于汉族患者,蒙古族患者和汉族患者在活产率、临床妊娠率、囊胚率、胚胎种植率、卵裂率和受精率上比较无统计学差异（p＞0.05）;冻融胚胎移植中蒙古族患者与汉族患者在活产率、临床妊娠率、胚胎种植率上无显著性差异（p＞0.05）。结论：蒙古族和汉族女性患者接受辅助生殖助孕后,胚胎移植后妊娠结局无显著性差异,民族差异不影响妊娠结局。     

氨氯地平与非洛地平缓释剂治疗原发性轻、中度高血压的随机、双盲平行对照研究

目的:对比氨氯地平与非洛地平缓释剂治疗轻中度原发性高血压的疗效和安全性;每日1次服药对24小时动态血压的影响;并对比药物漏服对血压控制的影响。方法:76例轻、中度高血压患者被随机、双盲分成两组,分别每日口服1次氨氯地平5～10mg(Ⅰ组)或非洛地平缓释剂5～10mg(Ⅱ组),治疗12周,并用24小时动态血压监测评价用药前后24小时血压变化情况及漏服48小时的血压变化。结果:氨氯地平治疗组舒张压降低15.1mmHg(治疗末为84.8mmHg),非洛地平缓释剂治疗组舒张压降低15.3mmHg(治疗末为85.0mmHg)。总有效率Ⅰ组病人为83.8％,Ⅱ组为87.9％(P=NS)。在药物的初始剂量下即能达到有效血压控制的病人数Ⅰ组为76％,Ⅱ组为52％(P<0.01)。药物漏服24和48h后,Ⅰ组临床血压仍低于140/90mmHg,24小时动态血压与漏服前相比无显著性差异,而Ⅱ组的临床血压高于140/90mmHg,临床血压和24小时动态血压与漏服前相比具有显著性差异。两治疗组的副作用发生率均较低。结论:氨氯地平与非洛地平缓释剂均能有效降低轻、中度高血压病人的血压,安全、疗效可靠,病人耐受性好,但漏服试验表明漏服24与48h氨氯地平仍能较好的控制血压。Ⅰ组的血压波动明显低于Ⅱ组。     

成人股骨头缺血性坏死早、中期外科治疗进展

成人股骨头缺血性坏死（Avascular necrosis of the femoral head，ANFH）是由于各种原因破坏了股骨头的血供导致股骨头缺血、坏死、塌陷，是骨科的常见病、多发病，常可导致严重髋关节功能障碍。股骨头坏死的最后结局是因全髋关节严重的骨性关节炎而需行全髋关节置换术，而人工关节的寿命及功能又受多种因素的制约，早、中期ANFH的治疗可以改善股骨头的血液循环，促进坏死修复，预防股骨头塌陷，恢复关节功能。本文对早、中期ANFH手术治疗的进展综述如下。     

Lack of association between methylenetetrahydrofolate dehydrogenase 1 G1958A polymorphism and prostate cancer risk: a meta-analysis

The methylenetetrahydrofolate dehydrogenase 1 (MTHFD1) polymorphism G1958A has been extensively investigated as a potential risk factor for prostate cancer (PCa), but the results have thus far been inconclusive. This meta-analysis was performed to derive a more precise estimation of the association. A comprehensive search was conducted to identify all case–control studies of MTHFD1 G1958A polymorphism and PCa risk. We used odds ratios (ORs) to assess the strength of the association, and 95 % confidence intervals (CIs) give a sense of the precision of the estimate. Statistical analyses were performed using Review Manage version 5.0 and Stata 10.0. A total of six available studies were considered in the present meta-analysis, with 7,493 patients and 36,941 controls. When all groups were pooled, there was no evidence that G1958A had significant association with PCa under additive, recessive, dominant, and allelic models. This meta-analysis suggests that MTHFD1 G1958A polymorphism might not be a risk factor for PCa. However, further large-scale and well-designed case–control studies are necessary to validate the risk identified in the present meta-analysis.     

Gastric adenocarcinoma of fundic gland (chief cell predominant type) coexisting with well differentiated intestinal adenocarcinoma: A case report

Rationale:Gastric adenocarcinoma of fundic gland (chief cell predominant type) (GA-FG-CCP) is a new, rare variant of gastric adenocarcinoma, which is characterized by mild nuclear atypia and specific immunohistochemical markers.Patient concerns:An 84-year-old Chinese man was referred to our hospital for endoscopic resection of a gastric lesion.Interventions:We performed endoscopic submucosal dissection, and successfully removed the lesion.Diagnosis:Esophago gastroduodenoscopy showed a slightly elevated lesion with a diameter of 22 mm in the posterior wall of cardia. Magnifying endoscopy with narrow band imaging revealed an abnormal microsurface and microvessels on the tumor surface. Endoscopic ultrasonography revealed a hypoechoic mass located in the first layer. The pathological diagnosis of the biopsy specimens indicated that the tumor was high grade intraepithelial neoplasia. The pathological diagnosis differed between the superficial and deeper part of the lesion. The superficial part was composed of a tubular structure with prominent atypia and was diagnosed as well differentiated intestinal adenocarcinoma. The deeper part was composed of a well-differentiated tubular adenocarcinoma mimicking the fundic gland cells, mainly the chief cells. The tumor cells showed mild nuclear atypia and was positive for pepsinogen-I (PG-I) and mucin-6 (MUC6). This deeper part was diagnosed as GA-FG-CCP.Outcomes:The tumor was successfully removed. This patient had no discomfort during the follow-up period (10 months).Lessons:We present a rare case of GA-FG-CCP coexisted with well-differentiated tubular adenocarcinoma. GA-FG-CCP exists in the deep mucosal layer and the muscularis mucosa, which could not be found under endoscopy, but could be discerned in pathology with mild nuclear atypia and special biomarkers.     

大学生自我分化、成人依恋与嫉妒的关系

目的:探讨大学生自我分化、成人依恋与其嫉妒的关系。方法:采用方便取样从湖南某高校选取443名大学生进行大学生自我分化量表、亲密关系体验量表和布伦格尔自我报告嫉妒量表的测试。结果:1男生在情绪反应得分上显著低于女生,而在情感断绝上显著高于女生(t=2.519,-3.493;P0.01)。男生在依恋回避和依恋焦虑得分上均显著高于女生(t=4.269,3.622;P0.01);2自我分化总分与嫉妒呈显著负相关。依恋焦虑与嫉妒呈显著负相关。自我分化总分与依恋回避,依恋焦虑均呈显著负相关(r=-0.285,0.220,-0.346,-0.537;P0.01);3自我分化总分与依恋焦虑均对嫉妒有显著的预测作用(Beta=-0.239,P0.001;Beta=0.113,P0.05);4自我分化总分在依恋焦虑对嫉妒的影响作用中起到完全中介作用,中介效应量为1.199,占总效应的比例为84.49%。结论:提高大学生的自我分化水平,建立安全型依恋以减少嫉妒的消极心理影响,改善大学生人际关系。     

Three-Dimensional SVM with Latent Variable: Application for Detection of Lung Lesions in CT Images

The study aims to improve the performance of current computer-aided schemes for the detection of lung lesions, especially the low-contrast in gray density or irregular in shape. The relative position between suspected lesion and whole lung is, for the first time, added as a latent feature to enrich current Three-dimensional (3D) features such as shape, texture. Subsequently, 3D matrix patterns-based Support Vector Machine (SVM) with the latent variable, referred to as L-SVM^3Dmatrix, was constructed accordingly. A CT image database containing 750 abnormal cases with 1050 lesions was used to train and evaluate several similar computer-aided detection (CAD) schemes: traditional features-based SVM (SVM^feature), 3D matrix patterns-based SVM (SVM^3Dmatrix) and L-SVM^3Dmatrix. The classifier performances were evaluated by computing the area under the ROC curve (AUC), using a 5-fold cross-validation. The L-SVM^3Dmatrix sensitivity was 93.0 with 1.23 % percentage of False Positive (FP), the SVM^3Dmatrix sensitivity was 88.4 with 1.49 % percentage of FP, and the SVM^feature sensitivity was 87.2 with 1.78 % percentage of FP. The L-SVM^3Dmatrix outperformed other current lung CAD schemes, especially regarding the difficult lesions.     

叉头状转录因子O1对糖尿病大鼠足细胞影响的实验研究

目的 探讨叉头状转录因子O1（Fox01）对糖尿病大鼠足细胞的影响.方法 链脲佐菌素（STZ）诱导构建糖尿病大鼠模型90只,并采用简单随机抽样法分为糖尿病（DM）＋空慢病毒载体（LV-pSC-GFP）感染组（LV-NC组,n=30）,DM＋大鼠结构性活性FoxO1慢病毒载体（LV-CA-FoxO1）感染组（LV-CA组,n=30）,DM组（n=30）,另设对照组（NG组,n=30）注射相应体积的柠檬酸钠-柠檬酸缓冲液.于慢病毒感染后的2、4、8周末,测大鼠尿白蛋白、体重、血糖、血肌酐、尿素氮,光镜和透射电镜观察肾小球及其足细胞结构变化,实时定量聚合酶链反应（RT-PCR）和Western blotting法检测大鼠肾皮质中FoxO1、足盂蛋白（PCX）、nephrin mRNA和蛋白的表达.多组间比较采用单因素方差分析.结果 与LV-NC、DM组相比,LV-CA组大鼠肾脏中FoxO1 mRNA、蛋白表达水平明显升高（F8W值分别为10 919.75、3 867.34,均P＜0.05）,尿白蛋白、血肌酐、尿素氮明显降低（2周除外）（F8W值分别为132.72、187.68、503.69,均P＜0.05）,肾脏中PCX、nephrin mRNA和蛋白水平明显升高（mRNA F8w值分别为778.94、478.10;蛋白F8W值分别为393.64、255.79,均P＜0.05）,肾脏病理学变化也明显改善,可见肾小球体积减小,系膜细胞及基底膜增生程度降低,足突融合也有一定程度改善.结论 通过靶向注射慢病毒载体来上调FoxO1的表达可改善DM大鼠足细胞的损伤.