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基于高通量测序探究双歧杆菌四联活菌片对非酒精性脂肪性肝病患者肠道菌群失衡的干预作用

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胃肠病学和肝病学杂志 2024年第9期33卷 1185-1191页

作者：魏文娟李超徐娴南京医科大学附属南京医院(南京市第一医院)消化科江苏南京210006

目的探讨双歧杆菌四联活菌片对非酒精性脂肪性肝病(non-alcoholic fatty liver disease,NAFLD)患者肠道菌群的影响。方法纳入2021年7月至2022年1月在我院收治的患有NAFLD的患者20例作为NAFLD组,同期来院健康检查的受试者20名作为健康对... 详细信息

目的探讨双歧杆菌四联活菌片对非酒精性脂肪性肝病(non-alcoholic fatty liver disease,NAFLD)患者肠道菌群的影响。方法纳入2021年7月至2022年1月在我院收治的患有NAFLD的患者20例作为NAFLD组,同期来院健康检查的受试者20名作为健康对照组。NAFLD组给予口服双歧杆菌四联活菌片4周,在治疗前后检测肝功能及血脂水平,并进行粪便样本采集。对NAFLD患者治疗前后及健康对照的粪便样本进行16S rDNA测序,分析肠道菌群的组成和结构。结果在双歧杆菌治疗后,NAFLD患者的肝功能指标ALT、AST及ALP,血脂指标TC及HDL显著改善。双歧杆菌未改变NAFLD组患者菌群的Alpha多样性,但Beta多样性发生显著改变。在双歧杆菌治疗后,NAFLD患者肠道中放线菌显著增加,而厚壁菌显著降低。Bifidobacterium、Bacteroides显著增加,Eubacterium_coprostanoligenes显著降低。LEfSe分析识别出双歧杆菌治疗后的生物标志物Bifidobacteriaceae、Actinobacteria、Coriobacteriaceae及Enterobacteriaceae。结论双歧杆菌四联活菌片可以调节NAFLD患者的肝功能及血脂代谢并改善肠道菌群失调,具有一定的临床应用前景。

关键词：双歧杆菌四联活菌片非酒精性脂肪性肝病肠道菌群

The first 2D organic-inorganic hybrid relaxor-ferroelectric single crystal

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Science China Chemistry 2023年第2期66卷 466-474页

作者： wenjuan wei Hongqiang Gao Ming Fang Yang Yang Yan Guan Yen wei Yunzhi Tang Department of Chemistry Tsinghua UniversityBeijing100084China Faculty of Materials Metallurgy and Chemistry Jiangxi University of Science and TechnologyGanzhou341000China Institute of Nuclear and New Energy Technology Tsinghua UniversityBeijing100084China The Analytical Instrumentation Center of Peking University the Center for Physicochemical Analysis and Measurements in ICCASBeijing100871China

Inorganic relaxor ferroelectric solid solution single crystals are spurring new generations of high performance electromechanical devices,including transducers,sensors,and actuators,due to their ultrahigh electric field induced strain,large piezoelectric constant,high electromechanical coupling factor and low dielectric ***,relaxor ferroelectric single crystals found in organic-inorganic hybrid perovskites are very limited,but achieving these superior properties in them will be of great significance in the design of modern functional ***,here the first two-dimensional(2D)organic-inorganic hybrid relaxor ferroelectric single crystal,[Br(CH_(2))_(3)NH_(3)]_(2)PbBr_(4)(BPA_(2)-PbBr_(4),BPA=3-bromopropylamine),achieves some of superior ***,BPA_(2)-PbBr_(4)reveals a successive relaxor ferroelectric-ferroelectric-paraelectric phase transitions accompanying by a large degree of relaxationΔT_(relax)=61 K and ultralow energy loss(tanδ<0.001).Meanwhile,it exhibits a superior second harmonic generation(SHG)effect with maximum value accounts for 95%of the standard KDP due to great deformation of structure(3.2302×10^(-4)).In addition,temperature dependent luminescence spectra(80-415 K)exhibit fluorescence and phosphorescence overlapping emission originated from inorganic and organic components with the nanosecond-scale short lifetime and the millisecond-scale long lifetime,respectively,and the color of the emitted light is continuously adjustable,which is the first to achieve luminescence and relaxor ferroelectricity compatibility.

关键词： 2D organic-inorganic hybrid perovskites ferroelectrics relaxor ferroelectrics paraelectrics luminescence

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内镜辅助诊断自发性纵隔气肿2例

中华消化内镜杂志 2024年第4期41卷 313-315页

作者：魏文娟董雨关月王黎宋燕玲徐兆军袁捷南京医科大学附属南京医院(南京市第一医院)消化科南京210017

食管破裂是临床危急重症,病情突然、凶险,需要尽早手术干预。文中报道了2例男性青少年纵隔气肿患者,以胸痛为主要症状,均有食管异物史,影像学检查考虑纵隔气肿为食管穿孔所致,胃镜检查未发现明确食管穿孔,随后予保守治疗,2例患者症状、... 详细信息

食管破裂是临床危急重症,病情突然、凶险,需要尽早手术干预。文中报道了2例男性青少年纵隔气肿患者,以胸痛为主要症状,均有食管异物史,影像学检查考虑纵隔气肿为食管穿孔所致,胃镜检查未发现明确食管穿孔,随后予保守治疗,2例患者症状、体征均明显好转后出院,从而避免了外科手术。

关键词：内窥镜检查消化系统自发性纵隔气肿食管破裂

In situ[2+3] cycloaddition synthesis,crystal structures,strong SHG responses and fluorescence properties of three novel Zn coordination polymers

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Chinese Chemical Letters 2020年第3期31卷 841-845页

作者： Haitao Zhou Kang Yang Yao Liu Yunzhi Tang wenjuan wei Qing Shu Jinjun Zhao Yuhui Tan School of Metallurgy and Chemical Engineering Jiangxi University of Science and TechnologyGanzhou 341000China

We report on the synthesis of two acentric and one centrosymmetric Zn metal-organic complexes with 3-tetrazolenethyl pyridine spacers obtained in situ by hydrothermal routes.X-ray diffraction structural analysis reveals that they have the same equivalent nodes but with dissimilar *** two acentric frameworks[Zn(Tzmp)Cl]n(1)and([Zn(Tzmp)Br]n(2),HTzmp=3-tetrazolemethyl pyridine)are isomorphism which exhibit an acentric 3D framework with(10,3)-b net called"ths",while the centro symmetric complex([Zn(Tzmp)N3]n(3))features a distinctive 2D sheet with Shubnikov hexagonal plane ***-luminescent studies suggest the ligand-field strength of coordinated negative ions(Cl^->Br^->N3^-)has ordered adjusting effects on the emission *** second harmonic generation(SHG)measurement shows that compounds 1 and 2 are nonlinear optically active,with SHG responses being 2/3 and half of the standard potassium dihvdrogen phosphate(KDP),respectively.

关键词： In situ synthesis Tetrazole complexes Zinc complex SHG responses Luminescence properties

滋肝补肾润目汤联合针刺和玻璃酸钠滴眼液治疗干眼症的效果分析

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国际医药卫生导报 2024年第10期30卷 1659-1663页

作者：吴沂旎魏文娟吴雪梅韩治华陕西省中医医院眼科西安710004

目的分析滋肝补肾润目汤联合针刺、玻璃酸钠滴眼液治疗干眼症的效果。方法前瞻性选取陕西省中医医院2020年5月至2023年5月收治的120例干眼症患者。按照随机数字表法分为对照组和联合组,每组60例。对照组男32例,女28例,年龄(42.58±3.15)... 详细信息

目的分析滋肝补肾润目汤联合针刺、玻璃酸钠滴眼液治疗干眼症的效果。方法前瞻性选取陕西省中医医院2020年5月至2023年5月收治的120例干眼症患者。按照随机数字表法分为对照组和联合组,每组60例。对照组男32例,女28例,年龄(42.58±3.15)岁,病程(4.21±1.13)个月,采用玻璃酸钠滴眼液治疗;联合组男34例,女26例,年龄(43.46±3.27)岁,病程(4.09±1.09)个月,在对照组基础上联合滋肝补肾润目汤、针刺治疗;两组均持续治疗2周。比较两组患者临床疗效和治疗期间不良反应发生率,比较治疗前后眼部症状评分、中医证候评分、泪膜破裂时间(BUT)、泪液分泌实验(SIT)和角膜荧光素染色(FL)评分。采用t检验、χ^(2)检验。结果联合组治疗总有效率高于对照组[93.33%(56/60)比80.00%(48/60)],差异有统计学意义(χ^(2)=4.615,P=0.032)。治疗2周后,联合组的干涩感、异物感、疲劳感、口干少津、头晕耳鸣、腰膝酸软和夜寐多梦评分均低于对照组(t=15.123、8.527、10.752、14.267、6.734、16.780、8.226,均P<0.001);BUT长于对照组[(11.17±1.12)s比(7.74±0.73)s],SIT高于对照组[(13.71±1.38)mm比(9.55±1.07)mm],FL评分低于对照组[(4.07±0.42)分比(4.68±0.51)分],差异均有统计学意义(t=19.873、18.453、7.152,均P<0.001)。两组治疗期间总不良反应发生率比较差异无统计学意义(χ^(2)=1.878,P=0.171)。结论采用滋肝补肾润目汤联合针刺、玻璃酸钠滴眼液治疗干眼症临床疗效优于单纯玻璃酸钠滴眼液治疗,可明显改善患者的眼部症状,降低中医证候积分,提高泪膜稳定性,且不会增加不良反应发生率。

关键词：干眼症滋肝补肾润目汤针刺玻璃酸钠滴眼液泪膜稳定性

Translocation of telomerase reverse transcriptase coincided with ATP release in postnatal cochlear supporting cells

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Neural Regeneration Research 2024年第5期19卷 1119-1125页

作者： Yukai Zhang Keyong Tian wei wei wenjuan Mi Fei Lu Zhenzhen Liu Qingwen Zhu Xinyu Zhang Panling Geng Jianhua Qiu Yongli Song Dingjun Zha Department of Otolaryngology Xijing HospitalFourth Military Medical UniversityXi’anShaanxi ProvinceChina

The spontaneous bursts of electrical activity in the developing auditory system are derived from the periodic release of adenosine triphosphate(ATP)by supporting cells in the Kölliker’s ***,the mechanisms responsible for initiating spontaneous ATP release have not been *** previous study revealed that telomerase reverse transcriptase(TERT)is expressed in the basilar membrane during the first postnatal *** role in cochlear development remains *** this study,we investigated the expression and role of TERT in postnatal cochlea supporting *** results revealed that in postnatal cochlear Kölliker’s organ supporting cells,TERT shifts from the nucleus into the cytoplasm over *** found that the TERT translocation tendency in postnatal cochlear supporting cells in vitro coincided with that observed in *** analysis showed that TERT in the cytoplasm was mainly located in mitochondria in the absence of oxidative stress or apoptosis,suggesting that TERT in mitochondria plays roles other than antioxidant or anti-apoptotic *** observed increased ATP synthesis,release and activation of purine signaling systems in supporting cells during the first 10 postnatal *** phenomenon that TERT translocation coincided with changes in ATP synthesis,release and activation of the purine signaling system in postnatal cochlear supporting cells suggested that TERT may be involved in regulating ATP release and activation of the purine signaling *** study provides a new research direction for exploring the spontaneous electrical activity of the cochlea during the early postnatal period.

关键词： apoptosis ATP release Ca2+transients cochlea mitochondrial function reactive oxygen species spontaneous electrical activity supporting cells

Characterisation of acute toxicity, genotoxicity and oxidative stress posed by textile effluent on zebrafish

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Journal of Environmental Sciences 2012年第11期24卷 1963-1971页

作者： wenjuan Zhang, wei Liu, Jing Zhang, Huimin Zhao, Yaobin Zhang, Xie Quan, Yihe Jin Key Laboratory of Industrial Ecology and Environmental Engineering, MOE, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China Key Laboratory of Industrial Ecology and Environmental Engineering MOE School of Environmental Science and Technology Dalian University of Technology Dalian 116024 China

Textile industries are important sources of toxic discharges and contribute enormously to water deterioration, while little attention has been paid to the toxicity of textile effluents in discharge regulation. Bioassays with zebrafish were employed to evaluate the toxicity of wastewater samples collected from different stages at a textile factory and sewage treatment plants (STPs). Physico-chemical parameters, acute toxicity, genotoxicity and oxidative stress biomarkers were analyzed. The wastewater samples from bleaching, rinsing and soaping of the textile factory exhibited high acute toxicity and genotoxicity. The coexisting components of dye compounds, as assistants and oxidants, seemed to cause some effect on the toxic response. After treatment employing the anoxic-oxic (A/O) process in STPs, the color and the chemical oxygen demand (COD) were reduced by 40% and 84%, respectively, falling within the criteria of the Chinese Sewage Discharge Standard. In contrast, increases in acute toxicity and genotoxicity were observed in the anaerobic tank, indicating the formation of toxic intermediates. The genotoxicity of the effluent of the STP was not significantly different from that of the influent, suggesting the wastewater treatment processes were not effective in removing the genotoxicity of the dye wastewater. Results indicated that the effluent contains pro-oxidants since the activities of glutathione (GSH), malondialdehyde (MDA), and total anti-oxidation capacity (T-AOC) were all elevated. In addition, decreases in superoxide dismutase (SOD) and glutathione-S transferase (GST) activities observed can be interpreted as a cytotoxicity sign due to an over-production of reactive oxygen species (ROS). The results of the present study suggest that the STPs were not capable of reducing the toxicity of wastewater sufficiently. Further treatment is needed to remove the potential risks posed by textile effluent to ecosystems and human health, and employing a toxicity index

关键词： acute toxicity genotoxicity micronucleus comet textile effluent

Ionic liquid-based in situ dynamically self-assembled cationic lipid nanocomplexes(CLNs)for enhanced intranasal siRNA delivery

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Chinese Chemical Letters 2024年第7期35卷 367-371页

作者： Luyu Zhang Zirong Dong Shuai Yu Guangyue Li weiwen Kong wenjuan Liu Haisheng He Yi Lu wei Wu Jianping Qi Key Laboratory of Smart Drug Delivery of MOE School of PharmacyFudan UniversityShanghai 201203China School of Pharmacy Shandong Academy of SciencesQilu University of TechnologyJi'nan 250353China College of Chemical Engineering North China University of Science and TechnologyTangshan 063210China

This research aims to develop a non-invasive strategy for small interfering RNA(siRNA)nasal delivery based on ionic liquids(ILs)and cationic lipid(2,3-dioleoyloxy-propyl)-trimethylammonium-chloride(DOTAP).Other than the classical role of penetration enhancer,ILs also acted as superior solvents to simultaneously load siRNA and DOTAP,forming siRNA-DOTAP-ILs(siRNA-DILs)*** nasal mucosa penetration,DOTAP and ILs components self-assembled into cationic lipid nanocomplexes to load siRNA for enhanced in situ *** siRNA-DILs demonstrated resistance against RNase,significant mucosa penetration,prolonged nasal retention,and satisfying gene-silencing efficacy at lower ***,DILs were also able to deliver KCa3.1-targeted siRNA effectively for the treatment of allergic rhinitis in rat model by nasal ***,DILs have great potentials to deliver biological macromolecules across nasal mucosa by in situ dynamic self-assembly.

关键词： Ionic liquids Cationic lipids Lipid nanoparticles siRNA Allergic rhinitis

A narrow bandgap two dimensional hybrid organic-inorganic perovskite with anomalous structural phase transition

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A narrow bandgap two dimensional hybrid organic-inorganic pe...