姜黄素通过PI3K/p53信号通路调控人胃癌细胞SGC-7901的增殖、凋亡和周期

目的 探讨姜黄素(Cur)对人胃癌细胞株SGC-7901增殖、凋亡和周期的影响及其分子机制.方法 采用不同浓度梯度Cur(0、10、20、40μmol/L)处理正常培养的SGC-7901细胞.3-(4,5-二甲基噻唑-2)-2,5-二苯基四氮唑溴盐(MTT)法检测在不同时间点(24、48、72 h)细胞增殖能力变化;H...     

Comparative clinical outcomes of different therapies for traumatic meniscal tears in adults: A protocol for systematic review and network meta-analysis

Background:Meniscus tears are usually classified as degenerative or traumatic tears according to their pathogenesis. At present, traumatic meniscal tears are generally believed to have high healing potential. In recent years, multiple treatments have been described for traumatic meniscal tears, such as the inside-out technique, outside-in technique, all-inside technique, biological augmentation of meniscal repair, meniscectomy, and non-surgical treatment. However, the functional recovery of the knee joint and healing of the meniscus after treatment are quite different from the results reported in the literature, which requires more reliable evidence-based medical findings. This study will evaluate evidence from multiple types of research comparing different therapies for traumatic meniscal tears in adults.MethodsWe will search the EMBASE, Cochrane Library (the Cochrane Database of Systematic Reviews, the Cochrane Central Register of Controlled Trials [CENTRAL], Cochrane Methodology Register), PubMed, Web of Science (Science and Social Science Citation Index), China Knowledge Network, CBM, Wanfang data, and VIP electronic databases from their inception to August 10, 2021, with no language restrictions. We will also manually search Baidu and Google Scholar to identify randomized controlled studies, non-randomized controlled studies, and cohort studies on the treatment of traumatic meniscal tears. Two researchers will independently screen the literature, extract the data, and evaluate the quality of the studies. Software programs, including Microsoft Access, Excel, Stata (Version 15), WinBUGS (Version 1.4.3), and ADDIS (Version 1.16.8), were used to analyze and manipulate the data.ResultsIn this study, the main outcomes were physical function and healing rate, based on the Western Ontario and McMaster Universities Osteoarthritis Index, Lysholm Knee Scoring Scale, Knee Injury and Osteoarthritis Outcome Score, Functional Recovery Scale, and clinical healing rate. The secondary indexes included total cost, cost-effectiveness ratio, incremental cost-effectiveness ratio, Tegner activity scale score, visual analogue scale, numerical rating scale, and meniscal tear complications.Conclusions:This systematic review will provide reliable evidence-based findings for the clinical application of different therapies for traumatic meniscal tears in adults.     

阻断内毒素胞内信号转导通路对大鼠移植肝脏再灌注损伤的影响

目的 探讨以白细胞介素-1受体相关激酶-4（IRAK-4）为靶点,阻断内毒素胞内信号转导后对大鼠移植肝脏再灌注损伤（I／RI）的影响并探索肝移植时可行的RNA干扰（RNAi）治疗途径。方法 两袖套法建立SD大鼠同种异体原位肝移植模型,随机分为冷缺血转染组、活体转染组及对照组。冷缺血转染组于冷缺血期经门静脉灌注转染携带IRAK-4-shRNA的质粒pSIIRAK-4;活体转染组在门静脉袖套吻合完成后,经门静脉分支注入pSIIRAK-4;对照组不予任何处理。按门静脉血流恢复后第0min、60min及180min分为三个亚组,RT—PCR及Western—blot测定肝组织的IRAK-4mRNA和蛋白表达水平;ELISA法测定受体血清TNF-α含量。采用TUNEL法检测肝细胞凋亡状态,透射电镜观察肝组织超微结构的病理形态学变化。结果 再灌注后冷缺血转染组的IRAK-4表达明显低于同时点的活体转染组及对照组（P〈0．01）;同时,肝细胞凋亡指数、血清TNF-α含量及肝细胞、血窦内皮细胞损伤程度也明显低于后者。结论 以IRAK-4为靶点的冷缺血期shRNAs转染途径能有效阻断内毒素胞内信号转导,进而减轻肝移植时的I／RI程度。     

经皮冠状动脉支架介入治疗患者行非心脏手术抗血小板治疗的困惑与思考

冠状动脉粥样硬化性心脏病患者日益增多,其中有相当比例的患者接受了经皮冠状动脉介入治疗及术后双联抗血小板治疗。这些患者如果短期内需要接受非心脏手术将面临失血增加的危害,但是如果停止抗血小板治疗,围手术期支架内血栓形成的风险和心肌梗死的发生率将增加。文章针对上述问题就冠状动脉支架植入患者术后抗凝治疗的主要药物、有效性及安全...     

生长抑素联合乌司他丁治疗消化道出血的Meta分析

目的 系统评价生长抑素联合乌司他丁治疗消化道出血的有效性和安全性。方法 计算机检索中国知网、维普、万方、CBM、PubMed、Cochorane library、Embase数据库,搜集有关生长抑素联合乌司他丁治疗消化道出血的随机对照试验。使用Revman 5.3软件进行Mete分析。结果 共纳入16项研究,1466例患者。结果显示,在总有效率[RR=1.24,95%CI(1.19～1.31),P <0.000 01]、白细胞介素-2[SMD=1.10,95%CI(0.38～1.81),P=0.003]、白细胞介素-6[SMD=-3.40,95%CI(-4.69～-2.12),P <0.000 01]、白细胞介素-10[SMD=2.77,95%CI(1.66～3.87),P <0.000 01]、肿瘤坏死因子-α[SMD=-2.56,95%CI(-3.26～-1.87),P<0.000 01]、住院时间[SMD=-1.75,95%CI(-2.24～-1.26),P<0.000 01]、消化道出血时间[SMD=-3.55,95%CI(-4.11～-2.99)...     

神经内镜治疗脑积水的适应证与并发症

目的研究神经内镜治疗脑积水的适应证、效果和并发症。方法采用神经内镜治疗脑积水30例,其中神经内镜三脑室造瘘术(ETV)22例,神经内镜透明膈造瘘术2例,因室间孔狭小或视野不清改行脑室-腹腔分流术5例。分析其临床和影像学结果,总结其效果、适应证和并发症。结果行ETV的22例术后颅内压210~240mmH2O,平均(226±28)mmH2O。并发脑膜炎2例,发热4例,1例切口愈合不良,4例ETV术后并发头皮下少量积液。出血3例,无死亡和永久后遗症。结论对于因导水管狭窄、后颅窝和中脑占位引起的梗阻性脑积水患者ETV有很好的效果。慎重选择造瘘部位和器械对于避免出血等严重并发症有重要意义。     

基于"络病学说"分析虫类药在肿瘤患者治疗中的应用

“络病学说”作为重要的中医基础病机之一,近年来被广泛应用于肿瘤类疾病的临床诊疗中,其对于肿瘤的发生发展以及转移等机制研究与治疗均有理论指导意义。“络病”在形态与功能上与现代医学中的肿瘤微血管、微循环概念相似;瘀阻络脉与肿瘤患者血液高凝状态类似,故运用“通络法”抗肿瘤具有充足的理论依据。虫类药是动物药的别称,作为通络药的代表,善于搜刮剔络,在肿瘤的防治中起到了活血化瘀通络、攻毒散结通络、搜风解毒通络以及补益培本通络等作用。通过梳理“络病学说”的起源、发展与成熟阶段的主要思想内涵,整理并总结现代肿瘤治疗中“络病学说”的相关研究与应用,并分析虫类药在通络法中的具体应用,以期为开展中医络病防治肿瘤的临床应用提供理论依据。     

基于数据挖掘的黄有荣教授治疗腰椎间盘突出症用药规律分析

目的应用数据挖掘的方法总结和分析黄有荣教授治疗腰椎间盘突出症的用药规律,为临床中医药治疗腰椎间盘突出症提供参考。方法收集、整理黄有荣教授首诊治疗腰椎间盘突出症的病例,对符合纳入标准的病例中使用的中药进行统计分析,运用SPSS20.0 for Windows统计软件对中药的频数、聚类规则进行分析,运用SPSS Modeler 14.1统计软件对药物用药规律进行数据挖掘。结果共有263份病例符合纳入标准,共使用中药210味,总计出现频次3582次,分析得出使用高频次药物有当归、牛膝、甘草、杜仲等33味中药;高频次药物组合主要包含当归与赤芍、当归与桃仁、牛膝与党参、当归与川芎等;治疗腰椎间盘突出症用药以补虚药、活血化瘀药、祛风湿药类药物为主,药物归经主要归肝、肾、脾经。结论黄有荣教授治疗腰椎间盘突出症以补益肝肾、活血化瘀为主,辅以祛风湿,通络止痛为治疗原则,独活寄生汤是其治疗的基础方剂,数据挖掘客观反映了黄有荣教授临床用药规律。     

经阴道植入TiLOOP网片的盆底重建术的临床疗效和安全性分析

目的:评价经阴道植入轻型钛化聚丙烯网片TiLOOP的盆底重建术的临床短期疗效和安全性。方法:回顾性分析南京医科大学附属无锡妇幼保健院2017年11月至2019年7月,以阴道前壁膨出Ⅲ~Ⅳ度为主的50例盆腔器官脱垂（POP）患者,对其实施经阴道植入TiLOOP网片的盆底重建术,其中自行裁剪TiLOOP网片的“协和式”盆底...     

Single-molecule optofluidic microsensor with interface whispering gallery modes

Label-free sensors are highly desirable for biological analysis and early-stage disease diagnosis. Optical evanescent sensors have shown extraordinary ability in label-free detection, but their potentials have not been fully exploited because of the weak evanescent field tails at the sensing surfaces. Here, we report an ultrasensitive optofluidic biosensor with interface whispering gallery modes in a microbubble cavity. The interface modes feature both the peak of electromagnetic-field intensity at the sensing surface and high-Q factors even in a small-sized cavity, enabling a detection limit as low as 0.3 pg/cm². The sample consumption can be pushed down to 10 pL due to the intrinsically integrated microfluidic channel. Furthermore, detection of single DNA with 8 kDa molecular weight is realized by the plasmonic-enhanced interface mode.

Detecting biological molecules and monitoring their dynamics are of crucial importance in biomedical analysis and disease diagnosis (1, 2). Practical applications generally involve complex biological environments, in which an engineered interface is highly desirable to enable the enrichment, detection, and analysis of specific biomolecules (3). Over the past decades, many techniques on interfacial molecular analysis have been developed, such as lateral flow immunoassay, electrochemical analytical techniques, and optical biosensors (4–7). Among them, optical evanescent microsensors, such as microspheres (8, 9), microtoroids (10–14), and nanowaveguides (15–18), have attracted considerable research interest since they can detect unlabeled molecules and monitor their interactions in real time and in situ with ultrahigh sensitivity, fast response, and miniature footprint.Despite these advantages, potentials of optical evanescent microsensors have not been fully explored. With the peak field intensity confined inside the cavity, these sensors can utilize the weak tail of the evanescent field only on the sensing surface (8, 10–12, 15, 16), thus limiting their sensitivities. Moreover, ultrasmall sample consumption is desired for high-efficiency sensing yet challenging in evanescent microsensors, since they require delicate sample delivery designs such as an additional chamber (9, 12) or a precisely aligned fluidic channel (19, 20). Therefore, an integrated microfluidic platform with ultimate sensitivity is highly demanded.In this work, we demonstrate an ultrasensitive optofluidic microbubble biosensor by exploiting the whispering gallery modes (WGMs) peaked at the interface between the optical resonator and the analyte solution, which are termed as the interface modes. Previously, the microbubble resonator has been widely used for measuring refractive index, biomolecule concentration, and single nanoparticle generally by the mode localized in the liquid core (21–29). Here, we find that the profile of the WGM field can be tuned by varying the wall thickness, and the interface mode emerges when the maximum of the field intensity is drawn onto the interface. Compared with conventional evanescent sensors, the present scheme utilizing interface modes promises maximum sensitivity for interfacial molecular analysis, pushing the detection limit down to 0.3 pg/cm². The scheme is also compatible with the widely adopted techniques to enhance signal- to-noise ratio (SNR) such as plasmonic hybridization (30–33) and frequency tracking (12, 15, 18). As a proof of concept, single-molecule detection is demonstrated with a plasmonic-enhanced interface mode. Naturally integrated into a microfluidic system, the sensor with single-molecule sensitivity exhibits ultrasmall sample consumption down to 10 pL, providing an automatic platform for biomedical analysis.