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Cell metabolism pathways involved in the pathophysiological changes of diabetic peripheral neuropathy 被引量:5
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作者 Yaowei Lv Xiangyun Yao +3 位作者 xiao li Yuanming Ouyang Cunyi Fan Yun Qian 《Neural Regeneration Research》 SCIE CAS CSCD 2024年第3期598-605,共8页
Diabetic peripheral neuropathy is a common complication of diabetes mellitus.Elucidating the pathophysiological metabolic mechanism impels the generation of ideal therapies.However,existing limited treatments for diab... Diabetic peripheral neuropathy is a common complication of diabetes mellitus.Elucidating the pathophysiological metabolic mechanism impels the generation of ideal therapies.However,existing limited treatments for diabetic peripheral neuropathy expose the urgent need for cell metabolism research.Given the lack of comprehensive understanding of energy metabolism changes and related signaling pathways in diabetic peripheral neuropathy,it is essential to explore energy changes and metabolic changes in diabetic peripheral neuropathy to develop suitable treatment methods.This review summarizes the pathophysiological mechanism of diabetic peripheral neuropathy from the perspective of cellular metabolism and the specific interventions for different metabolic pathways to develop effective treatment methods.Various metabolic mechanisms(e.g.,polyol,hexosamine,protein kinase C pathway)are associated with diabetic peripheral neuropathy,and researchers are looking for more effective treatments through these pathways. 展开更多
关键词 cell metabolism diabetic peripheral neuropathy peripheral nerve injury protein kinase C pathway reactive oxygen species.
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Nondestructive technique for identifying nuclides using neutron resonance transmission analysis at CSNS Back-n
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作者 Sheng-Da Tang Yong-Hao Chen +72 位作者 Jing-Yu Tang Rui-Rui Fan Qiang li Gong li Dong liu Zheng-Yao Jin Xing-Zhu Cui Tian-Xiang Chen Yi-Wei Yang Rong liu Han Yi Yang li Zhen Yang Qi An Hao-Fan Bai Jiang-Bo Bai Jie Bao Ping Cao Qi-Ping Chen Zhen Chen Zeng-Qi Cui An-Chuan Fan Chang-Qing Feng Fan-Zhen Feng Ke-Qing Gao Min-Hao Gu Chang-Cai Han Zi-Jie Han Guo-Zhu He Yong-Cheng He Yang Hong Yi-Wei Hu Han-Xiong Huang Wei-Hua Jia Hao-yu Jiang Wei Jiang Zhi-jie Jiang ling Kang Bo li Chao li Jia-Wen li xiao li Jie liu Shu-Bin liu Guang-Yuan Luan Chang-Jun Ning Bin-Bin Qi Jie Ren Zhi-Zhou Ren Xi-Chao Ruan Zhao-Hui Song Kang Sun Zhi-Xin Tan li-Jiao Wang Peng-Cheng Wang Zhao-Hui Wang Zhong-Wei Wen xiao-Guang Wu Xuan Wu li-Kun Xie Yong-Ji Yu Guo-Hui Zhang lin-Hao Zhang Mo-Han Zhang Qi-Wei Zhang Xian-Peng Zhang Yu-liang Zhang Yue Zhang Zhi-Yong Zhang Mao-Yuan Zhao Lu-Ping Zhou Zhi-Hao Zhou Ke-Jun Zhu 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2024年第1期178-187,共10页
Nondestructive and noninvasive neutron assays are essential applications of neutron techniques.Neutron resonance transmission analysis(NRTA)is a powerful nondestructive method for investigating the elemental compositi... Nondestructive and noninvasive neutron assays are essential applications of neutron techniques.Neutron resonance transmission analysis(NRTA)is a powerful nondestructive method for investigating the elemental composition of an object.The back-streaming neutron line(Back-n)is a newly built time-of-flight facility at the China Spallation Neutron Source(CSNS)that provides neutrons in the eV to 300 MeV range.A feasibility study of the NRTA method for nuclide identification was conducted at the CSNS Back-n via two test experiments.The results demonstrate that it is feasible to identify different elements and isotopes in samples using the NRTA method at Back-n.This study reveals its potential future applications. 展开更多
关键词 CSNS White neutron beam NRTA Nuclide identification Nondestructive method
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Graph theoretical analysis of limestone fracture network damage patterns based on uniaxial compression test
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作者 Mingyang Wang Congcong Wang +2 位作者 Enzhi Wang xiaoli liu xiao li 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2024年第9期3485-3510,共26页
The topological attributes of fracture networks in limestone,subject to intense hydrodynamics and intricate geological discontinuities,substantially influence the mechanical and hydraulic characteristics of the rock m... The topological attributes of fracture networks in limestone,subject to intense hydrodynamics and intricate geological discontinuities,substantially influence the mechanical and hydraulic characteristics of the rock mass.The dynamical evolution of fracture networks under stress is crucial for unveiling the interaction patterns among fractures.However,existing models are undirected graphs focused on stationary topology,which need optimization to depict fractures'dynamic development and rupture process.To compensate for the time and destruction terms,we propose the damage network model,which defines the physical interpretation of fractures through the ternary motif.We focus primarily on the evolution of node types,topological attributes,and motifs of the fracture network in limestone under uniaxial stress.Observations expose the varying behavior of the nodes'self-dynamics and neighbors'adjacent dynamics in the fracture network.This approach elucidates the impact of micro-crack behaviors on large brittle shear fractures from a topological perspective and further subdivides the progressive failure stage into four distinct phases(isolated crack growth phase,crack splay phase,damage coalescence phase,and mechanical failure phase)based on the significance profile of the motif.Regression analysis reveals a positive linear and negative power correlation between fracture network density and branch number to the rock damage resistance,respectively.The damage network model introduces a novel methodology for depicting the interaction of two-dimensional(2D)projected fractures,considering the dynamic spatiotemporal development characteristics and fracture geometric variation.It helps dynamically characterize properties such as connectivity,permeability,and damage factors while comprehensively assessing damage in rock mass fracture networks. 展开更多
关键词 MOTIF Fracture network Topological property Damage resistance LIMESTONE
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Apical meristem transcriptome analysis identifies a role for the blue light receptor gene GhFKF1 in cotton architecture development
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作者 xiao li Yuanlong Wu +3 位作者 Zhenping liu Hengling Wei Hantao Wang Shuxun Yu 《The Crop Journal》 SCIE CSCD 2024年第4期1126-1136,共11页
Cotton architecture is determined by the differentiation fate transition of axillary meristem(AM),and influences cotton yield and the efficiency of mechanized harvesting.We observed that the initiation of flowering pr... Cotton architecture is determined by the differentiation fate transition of axillary meristem(AM),and influences cotton yield and the efficiency of mechanized harvesting.We observed that the initiation of flowering primordium was earlier in early-maturing than that in late-maturing cultivars during the differentiation and development of AM.The RNA-Seq and expression level analyses showed that genes FLAVIN BINDING,KELCH REPEAT,F-BOX1(GhFKF1),and GIGANTEA(GhGI)were in response to circadian rhythms,and involved in the regulation of cotton flowering.The gene structure,predicted protein structure,and motif content analyses showed that in Arabidopsis,cotton,rapseed,and soybean,proteins GhFKF1 and GhGI were functionally conserved and share evolutionary origins.Compared to the wild type,in GhFKF1 mutants that were created by the CRISPR/Cas9 system,the initiation of branch primordium was inhibited.Conversely,the knocking out of GhGI increased the number of AM differentiating into flower primordium,and there were much more lateral branch differentiation and development.Besides,we investigated that proteins GhFKF1 and GhGI can interact with each other.These results suggest that GhFKF1 and GhGI are key regulators of cotton architecture development,and may collaborate to regulate the differentiation fate transition of AM,ultimately influencing plant architecture.We describe a strategy for using the CRISPR/Cas9 system to increase cotton adaptation and productivity by optimizing plant architecture. 展开更多
关键词 COTTON Axillary meristem GhFKF1 GhGI Plant architecture
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Dependence of Initial Capacity Irreversibility on Oxygen Framework Chemistry in Li-Rich Layered Cathode Oxides
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作者 xiao li Yibin Zhang +4 位作者 Bao Qiu Guoxin Chen Yuhuan Zhou Qingwen Gu Zhaoping liu 《Energy & Environmental Materials》 SCIE EI CAS CSCD 2024年第5期57-67,共11页
The undesirable capacity loss after first cycle is universal among layered cathode materials,which results in the capacity and energy decay.The key to resolving this obstacle lies in understanding the effect and origi... The undesirable capacity loss after first cycle is universal among layered cathode materials,which results in the capacity and energy decay.The key to resolving this obstacle lies in understanding the effect and origin of specific active Li sites during discharge process.In this study,focusing on Ah-level pouch cells for reliability,an ultrahigh initial Coulombic efficiency(96.1%)is achieved in an archetypical Li-rich layered oxide material.Combining the structure and electrochemistry analysis,we demonstrate that the achievement of high-capacity reversibility is a kinetic effect,primarily related to the sluggish Li mobility during oxygen reduction.Activating oxygen reduction through small density would induce the oxygen framework contraction,which,according to Pauli repulsion,imposes a great repulsive force to hinder the transport of tetrahedral Li.The tetrahedral Li storage upon deep oxygen reduction is experimentally visualized and,more importantly,contributes to 6%Coulombic efficiency enhancement as well as 10%energy density improvement for pouch cells,which shows great potentials breaking through the capacity and energy limitation imposed by intercalation chemistry. 展开更多
关键词 irreversible capacity loss Li transport kinetics Li-rich layered oxides oxygen framework chemistry tetrahedral Li
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Design and commissioning of a wideband RF system for CSNS-Ⅱ rapid-cycling synchrotron
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作者 Jian Wu Xiang li +4 位作者 Bin Wu Chun-lin Zhang Yang liu Wei Long xiao li 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2024年第1期35-44,共10页
The China Spallation Neutron Source(CSNS) upgrade project(CSNS-Ⅱ) aims to enhance the beam power from 100 to 500 kW. A dual-harmonic accelerating method has been adopted to alleviate the stronger space-charge effect ... The China Spallation Neutron Source(CSNS) upgrade project(CSNS-Ⅱ) aims to enhance the beam power from 100 to 500 kW. A dual-harmonic accelerating method has been adopted to alleviate the stronger space-charge effect in rapid-cycling synchrotrons owing to the increased beam intensity. To satisfy the requirements of dual-harmonic acceleration, a new radiofrequency(RF) system based on a magnetic alloy-loaded cavity is proposed. This paper presents design considerations and experimental results regarding the performance evaluation of the proposed RF system through high-power tests and beam commissioning. The test results demonstrate that the RF system satisfies the desired specifications and affords significant benefits for CSNS-Ⅱ. 展开更多
关键词 Dual-harmonic acceleration Magnetic alloy-loaded cavity RF system
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Self-expanding metal stent for relieving the stricture after endoscopic injection for esophageal varices
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作者 Fu-Long Zhang Jing Xu +8 位作者 Yu-Hong Jiang Yuan-Dong Zhu Yan Shi xiao li Hai Wang Chao-Jun Huang Chun-Hua Zhou Qun Zhu Jing-Wen Chen 《World Journal of Clinical Cases》 SCIE 2024年第28期6180-6186,共7页
BACKGROUND Esophageal stricture is one of the complications after esophageal varices sclero-therapy injection(ESI),and the incidence rate is between 2%-10%.AIM To explore the efficacy of self-expanding metal stent(SEM... BACKGROUND Esophageal stricture is one of the complications after esophageal varices sclero-therapy injection(ESI),and the incidence rate is between 2%-10%.AIM To explore the efficacy of self-expanding metal stent(SEMS)for the stricture after endoscopic injection with cyanoacrylate(CYA)and sclerotherapy for esophageal varices.METHODS We retrospectively analyzed the efficacy of SEMS to improve the stricture after endoscopic injection with CYA and sclerotherapy for esophageal varices in 4 patients from February 2023 to June 2023.RESULTS The strictures were improved in four patients after stenting.The stent was removed after two weeks because of chest pain with embedding into esophageal mucosa in one patient.The stent was removed after one month,however,the stent was reinserted because of the strictures happening again in two patients.The stent was removed after three months,however,the stent was reinserted because of the strictures happening again in one patient.The stent embedded into esophageal mucosa in three patients.There were 3 patients suffered reflux esophagitis,and the acid reflux was relieved by taking hydrotalcite.There was no other complication of esophageal perforation,bleeding from varices or infection.CONCLUSION SEMS may relieve the stricture which happened after endoscopic injection with CYA and sclerotherapy for esophageal varices.However,when we should remove the stent still needs to be explored. 展开更多
关键词 STENT STRICTURE Endoscopic injection Esophageal varices CYANOACRYLATE SCLEROTHERAPY
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Endoscopic ultrasound-guided biliary drainage vs percutaneous transhepatic biliary drainage for malignant biliary obstruction after endoscopic retrograde cholangiopancreatography failure
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作者 He Zhao xiao-Wu Zhang +1 位作者 Peng Song xiao li 《World Journal of Gastrointestinal Surgery》 SCIE 2024年第11期3614-3617,共4页
In a recent issue of the World Journal of Gastrointestinal Surgery,a meta-analysis investigated the safety and efficacy of electrocautery-enhanced lumen-apposing metal stent(ECE-LAMS)implantation for managing malignan... In a recent issue of the World Journal of Gastrointestinal Surgery,a meta-analysis investigated the safety and efficacy of electrocautery-enhanced lumen-apposing metal stent(ECE-LAMS)implantation for managing malignant biliary obstruction following failed endoscopic retrograde cholangiopancreatography.This manusc-ript endeavors to offer a comprehensive look at the progression of endoscopic ultrasound-guided biliary drainage(EUS-BD)technologies,weighing their merits and drawbacks against traditional percutaneous methods.Several meta-analyses and randomized controlled trials have compared the performance of EUS-BD and percutaneous transhepatic cholangiodrainage(PTCD).These studies revealed that the technical success rate,clinical success rate,and adverse events were similar between EUS-BD and PTCD.Nevertheless,given that most of these studies preda-te 2015,the safety and effectiveness of novel EUS-BD techniques,including ECE-LAMS,compared with those of percutaneous biliary drainage remain elusive.Further investigation is imperative to ascertain whether these novel EUS-BD techniques can safely and efficaciously replace conventional percutaneous thera-peutic approaches. 展开更多
关键词 Malignant biliary obstruction Biliary drainage Endoscopic ultrasound Percutaneous transhepatic biliary drainage Endoscopic retrograde cholangiopancreatography
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Effects of Different Grinding Methods on the Quality of Soybean Bean Milk
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作者 Miao xiao Xuejiao ZHANG +3 位作者 Muwen liU xiao li Tao YE xiaoping YANG 《Agricultural Biotechnology》 2024年第2期20-24,共5页
[Objectives] This study was conducted to improve the nutritional value of soybean milk, enrich the variety and taste of soybean milk, and find healthy food that is more conducive to people s nutritional needs. [Method... [Objectives] This study was conducted to improve the nutritional value of soybean milk, enrich the variety and taste of soybean milk, and find healthy food that is more conducive to people s nutritional needs. [Methods] Whole soybean milk was prepared by grinding with a grinding wheel at a low concentration (low-concentration grinding) and a stainless steel mill at a high concentration (high-concentration grinding). The sensory, physical and chemical characteristics and anti-nutritional factors of whole soybean milk produced by different grinding methods were studied. [Results] Compared with low-concentration grinding, the protein content in soybean milk prepared by high-concentration grinding increased by 24%, and the dietary fiber content increased by 74.7%. Before and after high-pressure homogenization, the particle size D(4, 3) of soybean milk prepared by low-concentration grinding was 212.1 and 93.59 μm, respectively, and the particle size D(4, 3) of soybean milk prepared by high-concentration grinding was 134.0 and 64.64 μm, respectively. The trypsin inhibitor activity and phytic acid content of soybean milk prepared by high-concentration grinding were significantly lower than those of soybean milk prepared by low-concentration grinding. [Conclusions] This study improves the diet structure of the broad masses of people, strengthens people s physique, and provides a new idea for the implementation and development of China s "Soybean Action Programme". 展开更多
关键词 Whole soybean milk Grinding method Low-concentration grinding High-concentration grinding Antinutritional factor
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鸡白痢沙门氏菌IPAJ蛋白的表达纯化、多克隆抗体制备及ELISA方法的建立 被引量:2
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作者 牛小杰 徐明国 +3 位作者 肖莉 刘文豪 陈创夫 王勇 《中国畜牧兽医》 CAS CSCD 北大核心 2023年第3期1218-1228,共11页
【目的】试验旨在建立以鸡白痢沙门氏菌的毒力相关基因所编码的IPAJ蛋白为抗原的间接ELISA方法。【方法】PCR扩增IPAJ基因并连接到pCzn1表达载体上,转化大肠杆菌BL21(DE3)感受态细胞,IPAJ基因重组蛋白用IPTG进行诱导表达并纯化,通过West... 【目的】试验旨在建立以鸡白痢沙门氏菌的毒力相关基因所编码的IPAJ蛋白为抗原的间接ELISA方法。【方法】PCR扩增IPAJ基因并连接到pCzn1表达载体上,转化大肠杆菌BL21(DE3)感受态细胞,IPAJ基因重组蛋白用IPTG进行诱导表达并纯化,通过Western blotting验证蛋白的反应原性。用纯化的IPAJ蛋白免疫60日龄试验兔,共免疫3次,制备其多克隆抗体,通过ELISA方法检测抗体效价。采用方阵滴定法优化以IPAJ蛋白作为诊断抗原的ELISA条件,初步建立以IPAJ蛋白为诊断抗原的间接ELISA方法,并与平板凝集试验结果进行比较。【结果】试验成功构建鸡白痢沙门氏菌IPAJ原核表达载体,并以包涵体形式纯化出重组蛋白,具有良好的反应原性。Western blotting分析结果显示,成功表达出32 ku的IPAJ蛋白,具有良好的特异性。间接ELISA检测结果显示,多克隆抗体效价为1∶25600,表明成功制备出多克隆抗体。建立的以IPAJ蛋白为诊断抗原的间接ELISA方法的最佳优化条件为:抗原包被浓度为5μg/mL,5%脱脂奶粉封闭1.5 h,一抗最佳稀释浓度为1∶250(孵育1 h),二抗最佳稀释浓度为1∶10000(孵育1 h),避光显色15 min。与平板凝集试验结果的符合率为91.00%。【结论】鸡白痢沙门氏菌IPAJ重组蛋白具备良好的特异性及反应原性,初步建立的鸡白痢沙门氏菌间接ELISA诊断法具有一定的实用性,可应用于临床大批量检测,为后续建立快捷的诊断方法提供依据。 展开更多
关键词 鸡白痢沙门氏菌 IPAJ蛋白 多克隆抗体 间接ELISA
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奥美拉唑联合不同益生菌调节肠道菌群减轻小儿功能性消化不良 被引量:3
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作者 何昀 肖力 +2 位作者 曹娟 刘志刚 罗威耀 《基础医学与临床》 2024年第2期219-224,共6页
目的 探讨奥美拉唑联合不同益生菌调节肠道菌群减轻小儿功能性消化不良(FD)的作用。方法 选取佛山市妇幼保健院儿科2022年1月至2023年2月收治的200例FD患儿为研究对象,随机分为奥美拉唑组,奥美拉唑分别联合布拉氏酵母菌散组、酪酸梭菌... 目的 探讨奥美拉唑联合不同益生菌调节肠道菌群减轻小儿功能性消化不良(FD)的作用。方法 选取佛山市妇幼保健院儿科2022年1月至2023年2月收治的200例FD患儿为研究对象,随机分为奥美拉唑组,奥美拉唑分别联合布拉氏酵母菌散组、酪酸梭菌二联活菌组和双歧杆菌四联活菌片组。治疗2周,对比各组患儿血清炎性因子、胃肠激素、肠道菌群、症状评分等指标变化。统计各组临床疗效及治疗期间不良反应发生率。结果 治疗后各组血清IL-6、TNF-α、IL-1β、超敏C反应蛋白(hs-CRP)、血管活性肠肽(VIP)、生长抑素(SS)水平、肠杆菌、肠球菌较治疗前显著下降(P<0.05),3个联合治疗组显著低于奥美拉唑组(P<0.05);治疗后各组血清胃动素(MOT)水平、双歧杆菌、乳杆菌显著升高(P<0.05),3个联合治疗组显著高于奥美拉唑组(P<0.05);治疗后各组症状评分较治疗前显著降低(P<0.05),3个联合治疗组显著低于奥美拉唑组(P<0.05);各组治疗期间不良反应发生率比较差异无统计学意义。结论 奥美拉唑联合不同益生菌在治疗小儿FD中均取得良好效果。 展开更多
关键词 奥美拉唑 益生菌 肠道菌群 功能性消化不良
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Advances in particulate matter filtration:Materials,performance,and application 被引量:5
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作者 Xuzheng Ji Jianying Huang +5 位作者 lin Teng Shuhui li xiao li Weilong Cai Zhong Chen Yuekun Lai 《Green Energy & Environment》 SCIE EI CAS CSCD 2023年第3期673-697,共25页
Air-borne pollutants in particulate matter(PM)form,produced either physically during industrial processes or certain biological routes,have posed a great threat to human health.Particularly during the current COVID-19... Air-borne pollutants in particulate matter(PM)form,produced either physically during industrial processes or certain biological routes,have posed a great threat to human health.Particularly during the current COVID-19 pandemic,effective filtration of the virus is an urgent matter worldwide.In this review,we first introduce some fundamentals about PM,including its source and classification,filtration mechanisms,and evaluation parameters.Advanced filtration materials and their functions are then summarized,among which polymers and MOFs are discussed in detail together with their antibacterial performance.The discussion on the application is divided into end-of-pipe treatment and source control.Finally,we conclude this review with our prospective view on future research in this area. 展开更多
关键词 Air filtration PM capture End-of-pipe treatment Source control COVID-19
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地中海饮食模式和急性非ST段抬高型心肌梗死发生风险的关系研究 被引量:1
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作者 张倩 肖莉 +4 位作者 郭畅 魏路佳 王喜福 王云龙 吴素萍 《中国医药》 2024年第1期1-5,共5页
目的探讨地中海饮食模式与急性非ST段抬高型心肌梗死(NSTEMI)发生风险的相关性。方法本研究是一项单中心大型病例对照研究。收集2017年1月至2020年12月在首都医科大学附属北京安贞医院首次确诊为急性NSTEMI的患者600例作为急性NSTEMI组... 目的探讨地中海饮食模式与急性非ST段抬高型心肌梗死(NSTEMI)发生风险的相关性。方法本研究是一项单中心大型病例对照研究。收集2017年1月至2020年12月在首都医科大学附属北京安贞医院首次确诊为急性NSTEMI的患者600例作为急性NSTEMI组。根据年龄、性别进行1∶1匹配选取同期本院体检中心健康体检者600人作为对照组。比较2组一般资料。根据饮食频率调查问卷计算出改良地中海饮食评分(AMEDS)。将所有受试者按AMEDS分为AMEDS<4分组、AMEDS 4~5分组和AMEDS≥6分组。分析总体及不同AMEDS组的急性NSTEMI发生风险,分析AMEDS中不同种类食物与急性NSTEMI发生风险的相关性。结果急性NSTEMI组有高血压病、糖尿病病史的患者比例、收缩压、体重指数、目前吸烟者比例均高于对照组,家庭收入≥120000元/年的比例、AMEDS均低于对照组,差异均有统计学意义(均P<0.05)。相对于AMEDS<4分组的受试者而言,AMEDS 4~5分组以及AMEDS≥6分组受试者急性NSTEMI发生风险明显降低(调整年龄、性别、受教育年限、家庭年收入、病史、体重指数、血压、血红蛋白、生活方式等多个协变量后的多因素分析比值比=0.72,95%置信区间:0.53~0.94,P=0.031;比值比=0.62,95%置信区间:0.47~0.84,P=0.008)。将患者按年龄和性别进行分层,多因素回归分析后发现,随AMEDS增加,急性NSTEMI发生风险降低的趋势在男性和年龄<60岁的人群依然存在(均P<0.05),在女性和≥60岁的人群中,趋势差异无统计学意义(均P>0.05),同时分层之间交互性分析后差异均无统计学意义(均P>0.05)。AMEDS食物种类分析结果显示,蔬菜、鱼类降低急性NSTEMI发生风险,红肉或加工肉类增加其发生风险(比值比=0.51,95%置信区间:0.42~0.66,P<0.001;比值比=0.75,95%置信区间:0.59~0.94,P=0.010;比值比=1.51,95%置信区间:1.21~1.90,P<0.001)。结论地中海饮食模式和急性NSTEMI的发生相关,改良地中海饮食的高依从性可能降低急性NSTEMI的发生风险。 展开更多
关键词 冠状动脉粥样硬化性心脏病 急性非ST段抬高型心肌梗死 地中海饮食模式
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魔芋甘露低聚糖增强肠道屏障功能改善酒精性中枢神经损伤的实验研究 被引量:1
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作者 陈晶晶 钟文艳 +2 位作者 沈文卓 肖莉 袁成福 《中国药理学通报》 CAS CSCD 北大核心 2024年第3期447-454,共8页
目的慢性酒精摄入导致的大脑过度神经炎症是中枢神经损伤的重要危险因素。本实验主要研究魔芋甘露低聚糖(Konjac mannan oligosaccharides,KMOS)保护酒精喂养小鼠中枢神经炎症的作用及其机制。方法C57BL/6J小鼠采用Gao-binge法制备慢性... 目的慢性酒精摄入导致的大脑过度神经炎症是中枢神经损伤的重要危险因素。本实验主要研究魔芋甘露低聚糖(Konjac mannan oligosaccharides,KMOS)保护酒精喂养小鼠中枢神经炎症的作用及其机制。方法C57BL/6J小鼠采用Gao-binge法制备慢性酒精喂养小鼠模型,同时使用不同剂量的KMOS灌胃干预,喂养6周。评估脑组织皮层和海马区域神经元损伤和小胶质细胞活化情况,观察结肠组织损伤情况和炎症反应,检测血清LPS浓度。体外使用LPS直接刺激Caco-2细胞制备肠黏膜损伤模型。结果慢性酒精的摄入可导致小鼠大脑神经元损伤,而不同剂量的KMOS均能有效降低酒精喂养小鼠脑组织中小胶质细胞的活化状态,降低NLRP3炎性小体活化导致的炎性因子表达,减轻神经元受损。对结肠组织的分析结果表明,KMOS的使用有效地降低了酒精喂养小鼠外周血中内毒素LPS的浓度,减轻酒精喂养小鼠结肠组织的病理损伤和炎性反应,增强肠道组织Occludin表达。体外实验也显示,KMOS能显著抑制酒精暴露下Caco-2细胞的炎性反应,显著提高Occludin表达水平。结论KMOS的使用可有效的抑制酒精摄入导致的肠道炎症,修复肠道屏障,减少肠道LPS进入脑组织,降低小胶质细胞活化导致的过度神经炎症反应,进而改善脑神经元损伤。KMOS具有预防酒精性神经损伤的潜力。 展开更多
关键词 魔芋甘露低聚糖 酒精 LPS 小胶质细胞 OCCLUDIN NLRP3炎症小体
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Field trial measurement and channel modeling for reconfigurable intelligent surface 被引量:2
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作者 Peng Zheng Jianwen Ding +5 位作者 Dan Fei Jiayi Zhang Bo Ai xiao li Shi Jin Tiejun Cui 《Digital Communications and Networks》 SCIE CSCD 2023年第3期603-612,共10页
With the advantage of programmable electromagnetic properties,Reconfigurable Intelligent Surfaces(RISs)havedrawn wide attention from both industry and academia.RIS-assisted communication systems can promote hugewirele... With the advantage of programmable electromagnetic properties,Reconfigurable Intelligent Surfaces(RISs)havedrawn wide attention from both industry and academia.RIS-assisted communication systems can promote hugewireless channel quality improvement and remarkable coverage enhancement.This paper proposes generalpathloss model,radiation pattern and mirror beam effect of 1-bit RIS at sub-6 GHz band.Field trails have beencarried out in outdoor and indoor deployment scenarios.The proposed model is validated through extensivesimulations and field-trial measurements.In addition,an optimized RIS phase-shit design process for the mirrorbeam elimination is proposed and validated with simulations.The proposed theoretical model and measurementresults can promote future research and application in RIS-assisted communications. 展开更多
关键词 Reconfigurable intelligent surfaces Channel measurement Path loss PROTOTYPE
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Cholangioscopy-assisted extraction through novel papillary support for small-calibre and sediment-like common bile duct stones 被引量:2
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作者 Wen-Gang Zhang Ning-li Chai +5 位作者 Bo Zhang xiao li Jia-Feng Wang Hao Dong Yu-Jie Feng En-Qiang linghu 《World Journal of Gastroenterology》 SCIE CAS 2023年第16期2495-2501,共7页
BACKGROUND To date,endoscopic retrograde cholangiopancreatography has become a wellestablished treatment for common bile duct(CBD)stones.However,it is not suitable for some special patients,such as pregnant women,chil... BACKGROUND To date,endoscopic retrograde cholangiopancreatography has become a wellestablished treatment for common bile duct(CBD)stones.However,it is not suitable for some special patients,such as pregnant women,children or those who cannot stop taking anti-coagulation/anti-platelet agents because of radiation injury and the risk of postoperative bleeding resulting from endoscopic sphincterotomy.To overcome these two problems,this study introduced cholangioscopy-assisted extraction through a novel papillary support for small-calibre and sediment-like CBD stones.AIM To assess the feasibility and safety of cholangioscopy-assisted extraction through a novel papillary support(CEPTS)for small-calibre and sediment-like common bile duct(CBD)stones.METHODS This Retrospective study was approved by the Ethics Committee of the Chinese PLA General Hospital.We designed a covered single dumbbell-style papillary support between 2021 and 2022.Between July 2022 and September 2022,7 consecutive patients with small-calibre(cross diameter≤1.0 cm)or sediment-like CBD stones underwent CETPS procedures in our center.The clinical characteristics and treatment outcomes of these 7 patients were extracted from a prospectively collected database.And the related data were analyzed.Informed consent was obtained from all participating patients.RESULTS A total of 2 patients had yellow sediment-like CBD stones,and aspiration extraction was performed after the insertion of papillary support.Of the 5 patients with clumpy CBD stones(0.4-1.0 cm),2 underwent basket extraction under direct vision for a single stone(0.5-1.0 cm,black and black grey),1 underwent balloon plus aspiration extraction under direct vision for 5 stones(0.4-0.6 cm,brown),and 2 underwent aspiration extraction only for a single stone(0.5-0.6 cm,yellow,none).Technical success,namely,no residual stones in the CBD or left and right hepatic ducts,was achieved in all 7 cases(100%).The median operating time was 45.0 minutes(range 13.0–87.0 minutes).Postoperative pancreatitis(PEP)occurred in one case(14.3%).Hyperamylasaemia without abdominal pain was noted in 2 of 7 patients.No residual stones or cholangitis were found during the follow-up.CONCLUSION CETPS appeared to be feasible to treat patients with small-calibre or sediment-like CBD stones.Patients,especially pregnant women and those who cannot stop anticoagulation/anti-platelet agents,could benefit from this technique. 展开更多
关键词 CHOLANGIOSCOPY Common bile duct stones Papillary support
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Meso-mechanical anisotropy and fracture evolution of reef limestones from the Maldives Islands and the South China Sea 被引量:1
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作者 lihui li Chenglong li +3 位作者 Beixiu Huang Jianguang li Shouding li xiao li 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2023年第12期3173-3187,共15页
Reef limestone is a biogenic sedimentary rock widely distributed in coral reef areas, acting as an important foundation for coast construction. Due to its special biogenic origin, reef limestone is different from conv... Reef limestone is a biogenic sedimentary rock widely distributed in coral reef areas, acting as an important foundation for coast construction. Due to its special biogenic origin, reef limestone is different from conventional rocks both in terms of rock structure and mechanical properties. In this study, mesoscale uniaxial compression experiments with five different loading directions were conducted on two kinds of reef limestones from the Maldives Islands and the South China Sea, respectively. The real-time high-resolution videos and images of failure processes were recorded simultaneously to investigate the fracture evolution and fracture surface roughness of reef limestones. It demonstrated that the reef limestones belonged to extremely soft to soft rocks, and their uniaxial compressive strength (UCS) values fluctuated with high discreteness. The mesoscale mechanical properties of reef limestones were highly anisotropic and mainly controlled by pore structure. The occurrence of dissolution pores in reef limestone tended to intensify mechanical anisotropy. With the integration of the fracture initiation and propagation features of reef limestones, it is supposed that the intrinsic mechanism of anisotropy was probably attributed to the differences in coral growth direction and dissolution. Furthermore, the quantified fracture surface roughness was revealed to have a good consistency with density and UCS for the reef limestones from the South China Sea. The findings are helpful for providing theoretical and experimental references for engineering construction in coral reef areas. 展开更多
关键词 Reef limestone Mechanical anisotropy Failure mode Pore structure Fracture surface roughness
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Improved microwave dielectric properties of MgAl_(2)O_(4)spinel ceramics through(Li_(1/3)Ti_(2/3))^(3+)doping 被引量:1
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作者 李潇 杨习志 +7 位作者 赖元明 张芹 李宝阳 戚聪 殷俊 王凡硕 巫崇胜 苏桦 《Chinese Physics B》 SCIE EI CAS CSCD 2023年第5期668-673,共6页
A series of nominal compositions MgAl_(2-x)(Li_(1/3)Ti_(2/3))_(x)O_(4)(x=0,0.04,0.08,0.12,0.16,and 0.20)ceramics were successfully prepared via the conventional solid-state reaction route.The phase compositions,micros... A series of nominal compositions MgAl_(2-x)(Li_(1/3)Ti_(2/3))_(x)O_(4)(x=0,0.04,0.08,0.12,0.16,and 0.20)ceramics were successfully prepared via the conventional solid-state reaction route.The phase compositions,microstructures,and microwave dielectric properties were investigated.The results of x-ray diffraction(XRD)and scanning electron microscopy(SEM)showed that a single phase of MgAl_(2-x)(Li_(1/3)Ti_(2/3))_(x)O_(4)ceramics with a spinel structure was obtained at x≤0.12,whereas the second phase of MgTi_(2)O_(5)appeared when x>0.12.The cell parameters were obtained by XRD refinement.As the x values increased,the unit cell volume kept expanding.This phenomenon could be attributed to the partial substitution of(Li_(1/3)Ti_(2/3))^(3+)for Al^(3+).Results showed that(Li_(1/3)Ti_(2/3))^(3+)doping into MgAl_(2)O_(4)spinel ceramics effectively reduced the sintering temperature and improved the quality factor(Q_f)values.Good microwave dielectric properties were achieved for a sample at x=0.20 sintering at 1500℃in air for 4 h:dielectric constantε_(r)=8.78,temperature coefficient of resonant frequencyτ_(f)=-85 ppm/℃,and Q_(f)=62300 GHz.The Q_(f)value of the x=0.20 sample was about 2 times higher than that of pure MgAl_(2)O_(4)ceramics(31600 GHz).Thus,MgAl_(2-x)(Li_(1/3)Ti_(2/3))_(x)O_(4)ceramics with excellent microwave dielectric properties can be applied to 5G communications. 展开更多
关键词 microwave dielectric ceramics MgAl_(2)O_(4)ceramic co-substitution MgTi_(2)O_(5) solid solubility limit
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The“Top 50 High Impact Researches of Traditional Medicine”published in 2021 被引量:1
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作者 xiao li Dong Xu +7 位作者 Jianfeng Tu Bo Pang xiaohui Yan Yuanlu Cui Yuefei Wang Cunzhi liu Yi Wang Junhua Zhang 《Acupuncture and Herbal Medicine》 2023年第4期232-243,共12页
In recent years,significant progress has been achieved in both basic and clinical research within the field of traditional medicine,garnering increasing attention worldwide.To further promote a high-quality and intern... In recent years,significant progress has been achieved in both basic and clinical research within the field of traditional medicine,garnering increasing attention worldwide.To further promote a high-quality and international development of traditional medicine,the editorial board of Acupuncture and Herbal Medicine provided a collection of the“Top 50 High-impact Researches of Traditional Medicine”published in 2021 through objective indicators and a strict selection process.The findings of the selected articles have a significant academic influence and possess considerable academic value both nationally and internationally.The selected articles cover a wide range of topics,including clinical research,acupuncture,pharmacology,chemistry,biosynthesis,medicinal plant resources,and new formulation and drug delivery system research on traditional medicine.Therefore,this article outlines the selection process of the top 50 high-impact research articles,analyzes their research characteristics,and provides a brief summary of their new findings and perspectives in the field of traditional medicine. 展开更多
关键词 Academic influence ETHNOPHARMACOLOGY High-impact research Traditional medicine
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滋阴凉血方联合泼尼松对免疫性血小板减少性紫癜小鼠免疫功能及ST2/IL-33通路的影响
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作者 赵冰洁 车虹 +4 位作者 胡琏 易文静 肖利 刘培佳 刘松山 《中国实验血液学杂志》 CSCD 北大核心 2024年第1期202-207,共6页
目的:探讨滋阴凉血方联合泼尼松对免疫性血小板减少性紫癜小鼠免疫功能及ST2/IL-33通路的影响。方法:40只BALB/c小鼠,其中32只采用注射抗血小板血清构建免疫性血小板减少性紫癜小鼠模型,造模成功后,随机分为模型、滋阴凉血方(0.2 ml/10... 目的:探讨滋阴凉血方联合泼尼松对免疫性血小板减少性紫癜小鼠免疫功能及ST2/IL-33通路的影响。方法:40只BALB/c小鼠,其中32只采用注射抗血小板血清构建免疫性血小板减少性紫癜小鼠模型,造模成功后,随机分为模型、滋阴凉血方(0.2 ml/10 g)、泼尼松(0.2 ml/10 g)和滋阴凉血方+泼尼松(0.2 ml/10 g)共4组,每组8只,剩余8只小鼠设为空白组。分别按剂量灌胃给药,模型组与空白组灌胃等量生理盐水,1次/d×2周。采集血样和脾脏组织,使用全自动血液分析仪测定外周血小板数;HE染色观察脾脏组织病理学变化;酶联免疫吸附法检测血清转化生长因子β、白细胞介素(IL)-17及外周血血小板生成素水平;Western blot检测脾脏组织IL-33、s ST2、ST2表达;流式细胞术检测外周血Th17、Treg细胞数。结果:与空白组相比,模型组小鼠血小板数、血小板生成素、转化生长因子β水平及Treg细胞均明显降低(P<0.05),IL-17水平、Th17细胞及IL-33、s ST2、ST2蛋白表达明显增加(P<0.01);与模型组相比,滋阴凉血方+泼尼松组血小板数、血小板生成素、转化生长因子β水平及Treg细胞均明显上升(P<0.05),IL-17水平、Th17细胞及IL-33、s ST2、ST2蛋白表达明显降低(P<0.01)。结论:滋阴凉血方+泼尼松可有效地调节Th17/Treg平衡,进而有效改善免疫性血小板减少性紫癜,其机制可能与调节ST2/IL-33信号通路有关。 展开更多
关键词 免疫性血小板减少性紫癜 滋阴凉血方 泼尼松 免疫功能 ST2/IL-33通路
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