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托里消毒散与柴胡清肝汤干预热盛肉腐证化脓性非哺乳期乳腺炎初期的随机对照研究

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中国中西医结合杂志 2024年第1期44卷 37-43页

作者：杜楠楠万华冯佳梅瞿文超邵士珺孙佳晔吴雪卿上海中医药大学附属曙光医院乳腺科上海200021

目的观察托里消毒散与柴胡清肝汤治疗热盛肉腐证化脓性非哺乳期乳腺炎(NPM)的临床疗效及对相关血清免疫炎症指标的影响。方法采用随机、对照、单盲研究方法,将72例热盛肉腐证化脓性NPM初期患者采用区组随机分为试验组和对照组,每组36例... 详细信息

目的观察托里消毒散与柴胡清肝汤治疗热盛肉腐证化脓性非哺乳期乳腺炎(NPM)的临床疗效及对相关血清免疫炎症指标的影响。方法采用随机、对照、单盲研究方法,将72例热盛肉腐证化脓性NPM初期患者采用区组随机分为试验组和对照组,每组36例,试验组内服托里消毒散治疗,对照组内服柴胡清肝汤治疗,疗程均为28天。入组第1~28天,每14天清晨抽取空腹血,测量肿块大小,记录脓肿形成及皮肤破溃程度。结果试验组治疗第14天较对照组脓肿范围更大,脓肿表面溃破数量及程度更严重(P<0.05);治疗28天,试验组肿块缩小程度、红细胞沉降率(ESR)下降水平优于对照组(P<0.05)。化脓性NPM初期患者免疫功能紊乱,表现为血清免疫球蛋白G(IgG)、补体(C)4、T淋巴细胞亚群CD3^(+)和CD4^(+)、调节T淋巴细胞(Treg)以及CD19^(+)B淋巴细胞(CD19^(+))异常升高,C3、活化人类白细胞Ⅱ类抗原DR(HLA-DR)T淋巴细胞以及自然杀伤(NK)细胞异常降低,两组治疗后异常指标水平均趋于正常,试验组对HLA-DR T细胞的调节作用更强(P<0.05)。结论与柴胡清肝汤比较,托里消毒散在促进化脓性NPM初期肿块缩小、抗炎及免疫调节方面作用更好。

关键词：化脓性非哺乳期乳腺炎初期托里消毒散柴胡清肝汤热盛肉腐证随机对照试验中药复方

LncRNA MCM3AP-AS1调节miR-424-5p/PSAT1轴对乳腺癌恶性进展的影响

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现代生物医学进展 2024年第14期24卷 2606-2612,2625页

作者：冯佳梅万华高晴倩瞿文超邵士珺孙佳晔吴雪卿上海中医药大学附属曙光医院乳腺科上海200011

目的:探讨长链非编码核糖核酸(lncRNA)微小染色体维持蛋白3相关蛋白-反义链1(MCM3AP-AS1)调节微小核糖核酸(miR)-424-5p/磷酸丝氨酸氨基转移酶1(PSAT1)轴对乳腺癌恶性进展的影响。方法:采用实时荧光定量聚合酶链式反应(RT-qPCR)法检测... 详细信息

目的:探讨长链非编码核糖核酸(lncRNA)微小染色体维持蛋白3相关蛋白-反义链1(MCM3AP-AS1)调节微小核糖核酸(miR)-424-5p/磷酸丝氨酸氨基转移酶1(PSAT1)轴对乳腺癌恶性进展的影响。方法:采用实时荧光定量聚合酶链式反应(RT-qPCR)法检测人正常乳腺上皮细胞MCF-10A和乳腺癌细胞株MDA-MB-231、BT549、BT20中LncRNA MCM3AP-AS1、miR-424-5p和PSAT1信使核糖核酸(m RNA)的表达水平。构建LncRNA MCM3AP-AS1低表达模型、miR-424-5p敲低与过表达模型,并使用RT-qPCR方法验证转染模型构建的成功。分别采用四氮甲基唑蓝(MTT)法、Transwell实验检测乳腺癌细胞株的增殖、迁移、侵袭能力。免疫印迹法检测各组MDA-MB-231细胞中细胞周期蛋白D1(CyclinD1)、E-钙黏蛋白(E-cadherin)、N-钙黏蛋白(N-cadherin)和PSAT1蛋白的表达。经生物信息学分析后,采用双荧光素酶报告基因实验与RNA免疫共沉淀(RIP)实验分别验证LncRNA MCM3AP-AS1与miR-424-5p、miR-424-5p与PSAT1之间的靶向关系。结果:在乳腺癌细胞株MDA-MB-231、BT549、BT20中MCM3AP-AS1、PSAT1 m RNA的表达水平显著高于MCF-10A(P<0.05),miR-424-5p表达水平显著低于MCF-10A(P<0.05)。敲低MCM3AP-AS1或过表达miR-424-5p均可以降低MDA-MB-231细胞的吸光度(OD490)值、细胞迁移数目和细胞侵袭数目、CyclinD1、N-cadherin和PSAT1蛋白表达水平(P<0.05),提高细胞E-cadherin蛋白表达水平(P<0.05)。敲低miR-424-5p的表达逆转了下调MCM3AP-AS1对MDA-MB-231细胞增殖、迁移和侵袭以及相关蛋白表达的影响。双荧光素酶报告基因实验与RIP实验证实MCM3AP-AS1靶向负调控miR-424-5p表达,miR-424-5p靶向负调控PSAT1的表达。结论:LncRNA MCM3AP-AS1在乳腺癌中呈高表达,其低表达可通过靶向调节miR-424-5p/PSAT1轴抑制乳腺癌的恶性进展。

关键词： MCM3AP-AS1 miR-424-5p PSAT1 乳腺癌

Open-Shell Oligomers and Polymers: Theory, Characterization Methods, Molecular Design, and Applications

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Chinese Journal of Polymer Science 2024年第4期42卷 417-436页

作者： xue-qing Wang Cheng Song Ting Lei Key Laboratory of Polymer Chemistry and Physics(Ministry of Education) School of Materials Science and EngineeringPeking UniversityBeijing100871China

Open-shell oligomers and polymers have exhibited intriguing electronic and magnetic properties, making them highly desirable for a wide range of applications, including ambipolar organic field-effect transistors (OFETs), photodetectors, organic thermoelectrics, and spintronics. Although open-shell ground states have been observed in certain small molecules and doped organic semiconductors, the exploration of open-shell ground-state conjugated polymers is still limited, and the strategies for designing these polymers remain obscure. This review aims to briefly introduce the theory and characterization methods of open-shell conjugated polymers, along with an overview of recent progress and applications. The objective is to stimulate further advancements and investigations in this promising area by shedding light on the potential of open-shell conjugated polymers and the challenges that lie ahead.

关键词： Conjugated polymers Open-shell molecules High-spin ground state Donor-acceptor(D-A)polymers Optoelectronic and magnetic properties

All types of base conversions allowed by base editors

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Science China(Life Sciences) 2024年第2期67卷 431-433页

作者： Shun-qing Liang Wen xue RNA Therapeutics Institute UMass Chan Medical SchoolWorcester 01655USA Department of Molecular Cell and Cancer BiologyUMass Chan Medical SchoolWorcester 01655USA Department of Molecular Medicine UMass Chan Medical SchoolWorcester 01655USA Li Weibo Institute for Rare Diseases Research UMass Chan Medical SchoolWorcester 01655USA

Base editors(BEs) hold great promise as tools for introducing single-base-pair changes in both basic research and therapeutic applications(Rees and Liu,2018).Base editors are composed of a Cas9 nickase fused to a DNA-modifying enzyme,which chemically modifies nucleobases within a specific targeting window near the Cas9-binding site.

关键词： base bases allowed

Mixed D-vine copula-based conditional quantile model for stochastic monthly streamflow simulation

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Water Science and Engineering 2024年第1期17卷 13-20页

作者： Wen-zhuo Wang Zeng-chuan Dong Tian-yan Zhang Li Ren Lian-qing xue Teng wu College of Water Resources and Hydrology Hohai UniversityNanjing 210098China Yellow River Research Center Hohai UniversityNanjing 210098China

Copula functions have been widely used in stochastic simulation and prediction of ***,existing models are usually limited to single two-dimensional or three-dimensional copulas with the same bivariate block for all *** address this limitation,this study developed a mixed D-vine copula-based conditional quantile model that can capture temporal *** model can generate streamflow by selecting different historical streamflow variables as the conditions for different months and by exploiting the conditional quantile functions of streamflows in different months with mixed D-vine *** up-to-down sequential method,which couples the maximum weight approach with the Akaike information criteria and the maximum likelihood approach,was used to determine the structures of multivariate Dvine *** developed model was used in a case study to synthesize the monthly streamflow at the Tangnaihai hydrological station,the inflow control station of the Longyangxia Reservoir in the Yellow River *** results showed that the developed model outperformed the commonly used bivariate copula model in terms of the performance in simulating the seasonality and interannual variability of *** model provides useful information for water-related natural hazard risk assessment and integrated water resources management and utilization.

关键词： Stochastic monthly streamflow simulation Mixed D-vine copula Conditional quantile model Up-to-down sequential method Tangnaihai hydrological station

异机融合^(18)F-FDG PET/MRI对癫痫灶的定位诊断价值

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中国CT和MRI杂志 2024年第7期22卷 7-10页

作者：伍雪晴李建东路莉赵海珊韩翠平徐凯徐州医科大学附属医院影像科江苏徐州221000

目的研究了异机融合^(18)F-FDG PET/MRI在治疗癫痫方面的效果的定位诊断价值。方法回顾性分析2018年8月~2022年8月于徐州医科大学附属医院确诊为难治性癫痫的患者41例,患者均行正电子发射体层成像/计算机断层显像(^(18)F-fluorodeoxyglu... 详细信息

目的研究了异机融合^(18)F-FDG PET/MRI在治疗癫痫方面的效果的定位诊断价值。方法回顾性分析2018年8月~2022年8月于徐州医科大学附属医院确诊为难治性癫痫的患者41例,患者均行正电子发射体层成像/计算机断层显像(^(18)F-fluorodeoxyglucose positron emission tomography/computed tomography,^(18)F-FDG PET/CT)及磁共振成像(magnetic resonance imaging,MRI)检查,以立体定位脑电图(stereoelectroencephalography,SEEG)及术中皮层脑电图(electrocorticography,ECoG)作为诊断的金标准,探讨PET/MRI异机融合图像对于癫痫灶的定位诊断价值。41例患者均通过手术或颅内神经刺激器植入进行干预。结果41例患者中男性23例,女性18例。MRI显像阳性率65.9%(27/41),定侧准确率58.5%(24/41),定位准确率46.3%(19/41);^(18)F-FDG PET/CT阳性显像率95.1%(39/41),定侧准确率82.9%(34/41),定位准确率78.0%(32/41);^(18)F-FDG PET/MRI融合检查阳性率97.6%(40/41),定侧准确率95.1%(39/41),定位准确率90.2%(37/41)。41例患者中结节性硬化2例,海马硬化11例,局灶性皮质发育不良(FCD)7例,胚胎发育不良性神经上皮肿瘤(DNET)2例,海绵状血管瘤1例,均与MRI报告提示一致;余18例未发现明确病因。结论^(18)F-FDG PET/MRI对癫痫病灶检出及定侧、定位价值高于传统的MRI检查,而^(18)F-FDG PET/CT显像和^(18)F-FDG PET/MRI异机融合显像在难治性癫痫患者病灶检出阳性率和致痫灶定侧定位准确性上不存在显著差异。MRI对病因诊断更为明确。对于病因明确的患者及MRI阴性而^(18)F-FDG PET/CT显像阳性患者,其术后疗效好。

关键词：癫痫磁共振成像正电子发射计算机断层扫描异机融合

Mechanical property of cylindrical sandwich shell with gradient core of entangled wire mesh

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Defence Technology（防务技术） 2024年第1期31卷 510-522页

作者： Xin xue Chao Zheng Fu-qiang Lai xue-qian wu Institute of Metal-rubber&Vibration Noise School of Mechanical Engineering and AutomationFuzhou UniversityFuzhou350116China Fujian Metallurgical Industry Design Institute Fuzhou350116China

To explore the wide-frequency damping and vibration-attenuation performances in the application of aerospace components,the cylindrical sandwich shell structure with a gradient core of entangled wire mesh was proposed in this ***,the gradient cores of entangled wire mesh in the axial and radial directions were prepared by using an in-house Numerical Control weaving machine,and the metallurgical connection between skin sheets and the gradient core was performed using vacuum ***,to investigate the mechanical properties of cylindrical sandwich shells with axial or radial gradient cores,quasi-static and dynamic mechanical experiments were carried *** primary evaluations of mechanical properties include secant stiffness,natural frequency,Specific Energy Absorption(SEA),vibration acceleration level,and so *** results suggest that the vibration-attenuation performance of the sandwich shell is remarkable when the high-density core layer is at the end of the shell or abuts the inner *** axial gradient material has almost no influence on the vibration frequencies of the shell,whereas the vibration frequencies increase dramatically when the high-density core layer approaches the ***,compared to the conventional sandwich shells,the proposed functional grading cylindrical sandwich shell exhibits more potential in mass reduction,stiffness designing,and energy dissipation.

关键词： Entangled wire mesh Gradient cylindrical sandwich shell Vacuum brazing Secant stiffness Damping

Some Convergence Properties for Weighted Sums of Martingale Difference Random Vectors

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Acta Mathematica Sinica,English Series 2024年第4期40卷 1127-1142页

作者： Yi wu xue Jun WANG School of Big Data and Artificial Intelligence Chizhou UniversityChizhou 247000P.R.China School of Big Data and Statistics Anhui UniversityHefei 230601P.R.China

Let{X_(ni),F_(ni);1≤i≤n,n≥1}be an array of R^(d)martingale difference random vectors and{A_(ni),1≤i≤n,n≥1}be an array of m×d matrices of real *** this paper,the Marcinkiewicz-Zygmund type weak law of large numb... 详细信息

关键词： Martingale difference random vectors weighted sums Marcinkiewicz–Zygmund type weak law of large numbers complete convergence strong law of large numbers multivariate simple linear regression model

Sample Generation for Security Region Boundary Identification Based on Topological Features of Historical Operation Data

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Journal of Modern Power Systems and Clean Energy 2024年第4期12卷 1087-1095页

作者： Xiaokang wu Wei Xu Feng xue College of Energy and Electrical Engineering Hohai UniversityNanjingChina NARI Group Corporation NanjingChina State Grid Electric Power Research Institute NanjingChina

Since the scale and uncertainty of the power sys-tem have been rapidly increasing,the computation efficiency of constructing the security region boundary(SRB)has become a prominent *** on the topological features of histori-cal operation data,a sample generation method for SRB identi-fication is proposed to generate evenly distributed samples,which cover dominant security *** boundary sample pair(BSP)composed of a secure sample and an unsecure sam-ple is defined to describe the feature of *** resolution,sampling,and span indices are designed to evaluate the cover-age degree of existing BSPs on the SRB and generate samples closer to the *** on the feature of flat distribution of BSPs over the SRB,the principal component analysis(PCA)is adopted to calculate the tangent vectors and normal vectors of ***,the sample distribution can be expanded along the tangent vector and corrected along the normal vector to cover different security ***,a sample set is randomly gen-erated based on the IEEE standard example and another new sample set is generated by the proposed *** results in-dicate that the new sample set is closer to the SRB and covers different security modes with a small calculation time cost.

关键词： Clustering analysis principal component analysis(PCA) sample generation security region boundary(SRB)