运动学对线与机械对线全膝关节置换早期临床结果比较

目的探讨并对比分析应用专用工具的运动学对线全膝关节置换和机械对线全膝关节置换的早期临床结果。 方法回顾性分析2019年3月至2021年3月间，在首都医科大学附属北京朝阳医院因膝骨关节炎行单侧全膝关节置换术，术后随访时间大于3个月且随访资料完整的患者，排除类风湿性关节炎等炎性关节病、髌股关节严重对位不良以及既往有膝关节侧副韧带或后交叉韧带损伤的患者；按对线方法分为专用工具运动学对线全膝关节置换(KA-TKA)组和机械对线全膝关节置换(MA-TKA)组，记录手术前后髋－膝－踝(HKA)角度，术前及术后3个月的膝关节临床评分(KS-C)和膝关节功能评分(KS-F)，术后3个月的遗忘关节评分(FJS)，采用独立样本t检验行统计学分析。 结果共有162例患者纳入研究，其中KA-TKA组82例，MA-TKA组80例。两组患者术后HKA差异无统计学意义(P>0.05)；术后3个月KA-TKA组患者的KS-C评分(t＝2.259)、KS-F评分(t＝1.994)和FJS评分(t＝2.945)均高于MA-TKA组，两组间差异有统计学意义(均为P<0.05)。 结论KA-TKA与MA-TKA相比，术后下肢力线相似，具有更好的临床评分表现和更高的膝关节功能表现，以及更高的FJS评分。     

Epigenetically downregulated Semaphorin 3E contributes to gastric cancer

Axon guidance protein Semaphorin 3E (Sema3E) promotes tumor metastasis and suppresses tumor cell death. Here, we demonstrated that Sema3E was decreased in gastric cancer. Its levels were inversely associated with tumor progression. Levels of Sema3E were associated with low p300 and high class I histone deacetylase (class I HDAC). Ectopic expression of Sema3E inhibited proliferation and colony formation of gastric cancer cell lines in vitro and xenografts in vivo. Sema3E overexpression inhibited migration and invasion of gastric cancer cells, which was associated with induction of E-cadherin and reduction of Akt and ERK1/2 phosphorylation. We suggest that silencing of Sema3E contributes to the pathogenesis of gastric cancer.     

毛大丁草抗卵清蛋白诱导的小鼠支气管哮喘作用的活性部位筛选

目的 通过卵清蛋白(ovalbumin，OVA)诱导的支气管哮喘小鼠模型，筛选毛大丁草抗哮喘的活性部位。方法 采用D101大孔吸附树脂法对毛大丁草50%乙醇提取物进行分段富集，依次洗脱得到水、60%乙醇、95%乙醇3个洗脱部位。小鼠通过腹腔注射OVA致敏、雾化吸入OVA激发来复制哮喘动物模型，在激发阶段连续6 d进行灌胃给药治疗。采用行为学评分考察不同部位对哮喘行为学的影响，利用酶联免疫吸附法测定血清、肺泡灌洗液(bronchoalveolar lavage fluid，BALF)中IL-5的浓度和血清免疫球蛋白IgE的浓度，采用HE染色对肺组织进行组织病理学评价。结果 模型组小鼠哮喘症状评分升高，血清中IgE和IL-5的水平显著升高，BALF中IL-5的水平显著升高；与模型组比较，60%乙醇段高剂量组小鼠哮喘症状明显改善，血清中IL-5的水平显著降低，BALF中IL-5的水平也显著降低。结合病理学切片观察，60%乙醇段治疗的小鼠较之模型组小鼠肺泡间隔增厚程度降低，血管周围和支气管周围炎症细胞浸润显著减少。结论 毛大丁草50%乙醇提取物的60%乙醇洗脱部位为其抗哮喘的活性部位，其化学成分主要是酚酸类、黄酮类和香豆素类。     

阴道平滑肌肉瘤1例报道并文献复习

目的探讨阴道平滑肌肉瘤的临床特点、诊治方法及预后。方法收集并分析大连大学附属中山医院2017年6月30日收治的1例经病理证实为阴道平滑肌肉瘤患者的临床资料,并回顾分析相关文献。结果该患者自二次手术后再次复发,经25次放疗后带瘤生存1年未发现肿瘤进展迹象。结论彻底手术切除肿瘤对于阴道平滑肌肉瘤患者的预后有重要意义,即使术后局部复发,若及时再次手术对患者预后延长生命具有积极影响,且术后及时辅以放疗可能使患者获益。     

口部运动时面部相关联标记点运动的三维定量分析

目的定量描述口部运动时,与其相关联的面部标记点运动,以探索评价面瘫、面肌联带运动的三维定量新方法。方法健康志愿者22人(45-60岁),利用"基于运动捕捉的面肌运动三维动态分析系统",采集"用力示齿"、"向右上拉口角"、"向左上拉口角"、"微笑"四个表情动作时,面部相关联标记点(眉弓点、上下眼睑点、内眦点、外眦点)的运动,以最大移动距离(Smax)和最大速率(Vmax)两个参数描述。结果 1.口周运动为主的表情动作中,面部其他部位标记点均有运动,且与位于口周的标记点在某一表情运动中其达到Smax或Vmax的时间分别是一致的。2."用力示齿"动作:Smax下眼睑点(左3.93mm,右4.15mm)>外眦点>上眼睑点>眉弓点>内眦点(左1.59mm,右1.53mm);Vmax眼睑点左上(42.643mm/s)>余眼睑标记点(31.58mm/s-37.62mm/s)>外眦点>眉弓点>内眦点(左11.71mm/s,右11.09mm/s)。3."微笑"动作:Smax及Vmax上眼睑点(左3.05mm,36.14mm/s;右2.53mm,28.90mm/s)>下眼睑点>外眦点>眉弓点>内眦点(左0.69mm,7.22mm/s;右0.77mm,7.80mm/s)。4."向右上拉口角"动作,Smax及Vmax外眦点及下眼睑点右侧明显大于左侧,内眦点右侧略大于左侧,上眼睑点、眉弓点左侧略大于右侧。5."向左上拉口角"Smax及Vmax外眦点、上眼睑点、下眼睑点左侧明显大于右侧,余标记点左侧略大于右侧。结论健康人进行口部运动时,会引起面部其他部位标记点发生相关联的运动,其达到Smax或Vmax的时间分别是一致的。在同一表情动作中,上、下眼睑点及外眦点的Smax、Vmax大于内眦点、眉弓点。Smax及Vmax的较小值出现于"微笑"动作内眦点;较大值出现于"用力示齿"动作下眼睑点。"向左上拉口角"动作同侧面部标记点Smax及Vmax均大于对侧相对称部位标记点。表情动作时面部无静止点。     

Comparative study of CD4 and CD45RO T cells and CD20 B cells in cerebrospinal fluid of syphilitic meningitis and tuberculous meningitis patients

This study was to investigate the differences of lymphocyte in the cerebrospinal fluid (CSF) of patients with syphilis meningitis (SM) and tuberculous meningitis (TBM) for new diagnostic insights. Totally, 79 cases of SM and 45 cases of TBM were enrolled. In the CSF, the CD4, CD45RO or CD20 positive lymphocytes were detected by immunohistochemistry. The proportion of CD4 T cells in the CSF lymphocytes in patients with SM was significantly higher than that in patients with TBM (p < 0.05). After medical therapy, there was a significantly decline trend of the CD4 T‐cell proportion in both groups (p < 0.05). The proportion of CD45RO T cells in CSF lymphocytes of patients with SM was less than that of patients with TBM (p < 0.05). After medical therapy, the positive ratio of CD45RO T cells was increased in the CSF of both group patients (p < 0.05). The proportion of CD20B cells in the CSF lymphocytes was not obviously different between the two groups during every stage. In conclusion, there are strong differences of CD4 and CD45RO T‐cell ratio, but not the CD20 B cells in the meningitis. CD4 and CD45RO T cells in CSF are a useful complement in differentially diagnosing SM and TBM; it contributes to further understand the pathogenesis and prognosis of SM and TBM.