地鳖纤溶蛋白口服时间/pH依赖结肠靶向微囊的开发及评价＊

地鳖中的纤溶活性蛋白是从地鳖中提取的具有抗栓及抗肿瘤作用的有效成分，其口服易被上消化道酶分解从而限制了应用。采用恒流泵滴制法开发地鳖纤溶活性蛋白时间/pH依赖口服结肠靶向微囊（EnpolypHaga fibrinolytic protein oral colon targeting microcapsules， CTM-EFP）。采用单因素实验和正交实验相结合的方法寻找到包封率为60.17 % ± 2.72 %、载药量为15.50 % ± 0.44 % 的最佳配方。扫描电子显微镜（SEM）显示微囊呈球形、表面光滑，在人工肠液中24 h的累积释放度为99.53 % ± 0.69 %，在人工胃液中24 h累积释放度为7.43 ± 1.04 %，通过时间/pH依赖达到结肠靶向作用。CTM-EFP在人工肠液中的体外释放曲线符合Korsmeyer方程，提示地鳖纤溶活性蛋白（EnpolypHaga fibrinolytic protein， EFP）是通过扩散和侵蚀机制结合释放的。CTM-EFP为EFP的口服给药提供了一种新的剂型，为EFP应用于临床提供参考。     

A High Order Bound Preserving Finite Difference Linear Scheme for Incompressible Flows

We propose a high order finite difference linear scheme combined with a high order bound preserving maximum-principle-preserving (MPP) flux limiter to solve the incompressible flow system. For such problem with highly oscillatory structure but not strong shocks, our approach seems to be less dissipative and much less costly than a WENO type scheme, and has high resolution due to a Hermite reconstruction. Spurious numerical oscillations can be controlled by the weak MPP flux limiter. Numerical tests are performed for the Vlasov-Poisson system, the 2D guiding-center model and the incompressible Euler system. The comparison between the linear and WENO type schemes, with and without the MPP flux limiter, will demonstrate the good performance of our proposed approach.     

Correction to: Expression profle of PU.1 in CD4+T cells from patients with systemic lupus erythematosus

Clinical and Experimental Medicine - A correction to this paper has been published: https://doi.org/10.1007/s10238-021-00731-x     

短时程脊髓电刺激治疗爆发痛合并触诱发痛的急性期带状疱疹的临床研究

目的探讨短时程脊髓电刺激(temporary spinal cord stimulation, tSCS)治疗爆发痛合并触诱发痛的急性期带状疱疹的临床疗效。方法回顾性地分析同济大学附属第十人民医院疼痛科2020年1月—2020年12月收治的52例接受tSCS治疗的爆发痛合并触诱发痛的急性期带状疱疹患者的临床资料，评估在治疗前、治疗后3d、7d、14d、3个月、6个月的总体疼痛情况(numerical rating scale, NRS)评分、(simple McGill scores, McGill)评分、爆发痛情况(发生率、NRS评分、次数以及持续时间)、触诱发痛情况(发生率、分级)、术后不良反应等；评估在治疗前、治疗后7d、3个月、6个月的睡眠时长、睡眠中醒来次数、疼痛障碍指数(pain disorder index, PDI)、功能状态评分(Karnofsky score, KPS)、抑郁症筛查量表(patient health questionnaire depression module scale, PHQ-9)和焦虑症筛查量表(generalized anxiety disorder-7 scale, GAD-7)等。结果与治疗前相比，治疗后3d、7d、14d、3个月、6个月的总体疼痛NRS评分、总体疼痛MCGILL评分、静息痛NRS评分明显降低(均P<0.001)；与治疗前相比，治疗后3d、7d、14d、3个月、6个月的的爆发痛NRS评分明显降低(均P<0.05)，治疗后14d、3个月、6个月时的爆发痛次数以及持续时间都明显降低(均P<0.05)；与治疗前比较，患者治疗后7d、14d、3个月、6个月时的触诱发痛的分级都明显降低，差异均有统计学意义(均P<0.05)；与治疗前相比，治疗后14d、3个月、6个月的PDI评分明显降低(P<0.05)；与治疗前相比，治疗后14d、3个月、6个月的PHQ-9评分和GAD-7评分都明显减少(P<0.05)，与术前的药物使用情况相比，治疗后各镇痛药使用人数普遍呈下降趋势；术中及整个随访期间未观察到严重不良事件。结论短时程脊髓电刺激对爆发痛合并触诱发痛的急性期带状疱疹具有较好的临床疗效。     

改良技术在腹腔镜肾部分切除中的应用及患者选择

目的 比较常规阻断缝合及早期松开阻断(EU)联合单层缝合(SLS)在腹腔镜肾部分切除(LPN)中"三连胜"及"五连胜"成功率的差异,评估改良技术的安全性及肾功能保护价值,寻找新技术的适应证.方法 纳入80例接受LPN患者,40例采用改良技术,40例采用常规技术.收集患者基线、围手术期及随访资料并进行分析.结果 两组并发症发生率、手术切缘阳性率、复发转移率及"三连胜"达成率差异无统计学意义.改良组"五连胜"达成率显著高于常规组,常规组内年龄过大、肿瘤直径过大及术前肾小球滤过率(eGFR)过低是导致"五连胜"失败的独立危险因素.肿瘤直径＞ 35 mm、年龄＞64岁、术前eGFR＜ 73 ml/(min·1.73 m2)为导致"五连胜"失败临界值.结论 改良技术不增加各种并发症发生风险,在肿瘤体积较大、肾功能较差及高龄患者中使用该技术有利于患肾功能保护及"五连胜"目标的达成.     

经桡动脉途径行外周血管介入的临床研究

目的评价经桡动脉途径(TRA)行外周血管介入的安全性和可行性。方法回顾性收集2017年9月至2019年3月于中国医学科学院肿瘤医院TRA行外周血管介入治疗的106例肿瘤患者的临床资料,分析患者的桡动脉穿刺率、穿刺完成后续操作的手术成功率以及术后30 d内相关并发症。结果106例患者中,TRA外周血管介入操作112例次,其中行经导管肝动脉化疗栓塞术83例次,支气管动脉灌注术4例次,盆腔肿瘤栓塞术11例次,其他手术14例次。所有介入操作穿刺成功率为97.3%(109/112),手术成功率为98.2%(107/109)。5例患者TRA失败,转为股动脉穿刺,并顺利完成操作。手术严重并发症为主动脉夹层2例次;轻微并发症中,桡动脉闭塞2例次,桡动脉痉挛1例次,手臂疼痛1例次,穿刺点血肿1例次。严重并发症和轻微并发症发生率分别为1.8%(2/112)和4.5%(5/112)。急诊操作16例次,均顺利完成操作,无并发症发生。结论TRA行外周血管介入治疗是安全、可行的。     

Optimize the management of urological tube-related emergencies during the coronavirus disease 2019 (COVID-19) pandemic

BackgroundTo introduce and determine the value of optimized strategies for the management of urological tube-related emergencies with increased incidence, complexity and operational risk during the global spread of coronavirus disease 2019 (COVID-19).MethodsAll emergent urological patients at Tongji Hospital, Wuhan, during the period of January 23 (the beginning of lockdown in Wuhan) to March 23, 2020, and the corresponding period in 2019 were recruited to form this study’s COVID-19 group and control group, respectively. Tongji Hospital has the most concentrated and strongest Chinese medical teams to treat the largest number of severe COVID-19 patients. Patients in the control group were routinely treated, while patients in the COVID-19 group were managed following the optimized principles and strategies. The case incidence for each type of tube-related emergency was recorded. Baseline characteristics and management outcomes (surgery time, secondary complex operation rate, readmission rate, COVID-19 infection rate) were analyzed and compared across the control and COVID-19 periods.ResultsThe total emergent urological patients during the COVID-19 period was 42, whereas during the control period, it was 124. The incidence of tube-related emergencies increased from 53% to 88% (P<0.001) during the COVID-19 period. In particular, the incidence of nephrostomy tube-related (31% vs. 15%, P=0.027) and single-J stent-related problems (19% vs. 6%, P=0.009) increased significantly. The mean surgery times across the two periods were comparable. The number of secondary complex operations increased from 12 (18%) to 14 (38%) (P=0.028) during the COVID 19-period. The number of 2-week postoperative readmission decreased from 10 (15%) to 1 (3%) (P=0.049). No participants contracted during the COVID-19 period.ConclusionsUrological tube-related emergencies have been found to have a higher incidence and require more complicated and dangerous operations during the COVID-19 pandemic. However, the optimized management strategies introduced in this study are efficient, and safe for both urologists and patients.