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Potential of A Yogurt Enriched with Synbiotics for Influenza Prevention and Treatment

Food Science and Human Wellness 2024年

作者： Liqiong Song Bin Liu Yuangming Huang Junying Zhao Xianping Li Weicang Qiao Siqin He Hanyu Ma Yanpin Liu weicheng nie Lijun Chen Zhihing Ren National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases， National Institute for Communicable Disease Control and Prevention， Chinese Center for Disease Control and Prevention National Engineering Research Center of Dairy Health for Maternal and Child， Beijing Sanyuan Foods Co.Ltd. Beijing Engineering Research Center of Dairy， Beijing Technical Innovation Center of Human Milk Research， Beijing Sanyuan Foods Co.Ltd. Institute of Basic Theory for Chinese Medicine， China Academy of Chinese Medical Sciences Beijing University of Chinese Medicine Third Affiliated Hospital

Probiotics show anti-influenza activity， offering a potential variant-resistant alternative for infection prevention and control. In this study， we evaluated whether a specially formulated yogurt enriched with synbiotics (named yogurt 1 in this study) with seven probiotics and six prebiotics， has anti-influenza effects and its underlying mechanisms using a mouse model challenged with influenza virus H1N1 PR8 strain. The mice were treated with phosphate-buffered saline (negative control)， yogurt matrix， yogurt 1， and oseltamivir (positive control)， respectively. yogurt 1 treatment improved the survival of infected mice (from 0% to 30%)， alleviated pathological injuries in the lungs and colon， and reduced the viral load of influenza virus on days 3 and 7 post-infection. yogurt 1 also downregulated some inflammation-related signaling pathways and reduced the levels of proinflammatory cytokines or chemokines in the lungs or serum， including interleukin (IL)-1β， IL-6， tumor necrosis factor-α (TNF-α) and keratinocyte chemoattractant (KC). The levels of short-chain fatty acids in the cecal content were increased， the diversity of the intestinal flora was partially restored， and influenza-specific IgG and interferon-secreting lymphocytes were enhanced following yogurt 1 administration. Thus， yogurt 1， as a commercial and easily accessible dairy product， demonstrated a notable anti-influenza effect in mice by inhibiting viral proliferation， suppressing excessive inflammatory responses， and promoting influenza virus-specific adaptive humoral and cellular immune responses， demonstrating its potential for influenza epidemic prevention and control.

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肺结节性质与中医体质、证型的相关性研究

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河北中医 2024年第1期46卷 46-50,55页

作者：乜炜成程淼张喆王林洋班承钧曾金生北京中医药大学北京100291 北京中医药大东直门医院呼吸科北京100700

目的观察研究肺结节性质与中医体质、证型的相关性。方法收集2019年7月至2020年12月就诊的肺结节患者271例,对患者肺结节的直径、密度、数量情况进行统计,直径按≤4 mm、4~6 mm、6~8 mm、>8 mm划分为4种,密度分为实性肺结节、纯磨玻璃... 详细信息

目的观察研究肺结节性质与中医体质、证型的相关性。方法收集2019年7月至2020年12月就诊的肺结节患者271例,对患者肺结节的直径、密度、数量情况进行统计,直径按≤4 mm、4~6 mm、6~8 mm、>8 mm划分为4种,密度分为实性肺结节、纯磨玻璃结节、混杂性结节3种,数量分为孤立性结节、多发性结节2种。同时对患者的中医体质、证型进行判断,体质分为平和质、气虚质、阳虚质、阴虚质、痰湿质、湿热质、血瘀质、气郁质、特禀质9种类型,证型分为肺气亏虚证、气阴两虚证、瘀血阻络证、痰热郁肺证、肝郁气滞证5种证型。然后整理统计患者的一般资料信息,并进行肺结节直径、密度、数量与中医体质、证型的相关性分析。结果271例肺结节患者老年(>60岁)患者占比最高(164例,60.5%),肺结节直径4~6 mm者最多(134例,49.5%),密度主要为纯磨玻璃结节(160例,59.0%),数量为多发性结节者居多(198例,73.1%)。271例肺结节患者中,中医体质分布最多的是气虚质(64例,23.6%)、气郁质(60例,22.1%)、湿热质(41例,15.1%),中医证型分布最多的是肺气亏虚证(93例,34.3%)、气阴两虚证(52例,19.2%)、瘀血阻络证(48例,17.7%)等。经相关性检验,肺结节直径与中医体质之间有相关性,气郁质患者临床多见直径≤4 mm的肺结节(P8 mm的肺结节(P<0.05);肺结节密度与中医证型之间有相关性,肝郁气滞证患者多见纯磨玻璃结节(P<0.05);肺结节数量与中医证型之间有相关性,肝郁气滞证患者多见多发性结节(P<0.05),少见孤立性结节(P<0.05)。结论肺结节直径、密度、数量与中医体质、证型分布具有一定的相关性,临床辨治时可基于肺结节性质和中医体质、证型的相关性对肺结节进行更精准的诊治。

关键词：肺结节中医体质中医证型相关性

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基于网络药理学和动物实验探讨三阳合治法治疗流感的作用及机制

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国际病毒学杂志 2024年第4期31卷 285-290页

作者：王明哲张亚楠李德莹刘畅季舒杨沈冠彤乜炜成翟志光宋利琼李金桐王成祥张立山班承钧程淼北京中医药大学东直门医院呼吸科 100700 河南省中医院肺病科郑州400053 中国中医科学院中医基础理论研究所北京100700 中国疾病预防控制中心传染病预防控制所传染病预防控制国家重点实验室北京102206 北京中医药大学第三附属医院呼吸科 100029

目的探讨基于三阳合治法的麻杏石甘汤合小柴胡汤治疗流感的治疗作用及潜在靶点、作用机制。方法基于TCMSP数据库筛选麻杏石甘汤合小柴胡汤的活性成分及靶点,通过OMIM、Genecards、DisGeNET及TTD数据库获取流感相关靶点,取二者交集得到... 详细信息

目的探讨基于三阳合治法的麻杏石甘汤合小柴胡汤治疗流感的治疗作用及潜在靶点、作用机制。方法基于TCMSP数据库筛选麻杏石甘汤合小柴胡汤的活性成分及靶点,通过OMIM、Genecards、DisGeNET及TTD数据库获取流感相关靶点,取二者交集得到共同靶点,导入STRING数据库,构建蛋白互作网络,筛选药物治疗流感的关键靶点。通过DAVID数据库,对共同靶点进行富集分析。基于CytoScape3.9.0平台构建成分-流感靶点-通路网络图。应用Sailvina对关键靶点与主要活性成分进行对接验证。同时构建流感病毒性肺炎动物模型,验证三阳合治法对流感小鼠肺指数、肺组织病理损伤及炎性损伤的保护作用。结果共检索并筛选到麻杏石甘汤合小柴胡汤活性成分184种,靶点316个,流感靶点2894个,二者共同靶点152个,构建PPI网络筛选关键靶点有AKT1、STAT3、TNF等。GO和KEGG富集分析提示,麻杏石甘汤合小柴胡汤可能是通过调节IL-17、TNF、Toll样受体等信号通路治疗流感。分子对接显示,关键靶点与主要活性成分具有较好的结合能力。动物实验表明,麻杏石甘汤合小柴胡汤能改善病毒性肺炎小鼠体重下降、肺指数及肺组织炎症情况,并改善肺组织病理损伤、血清CCL3、CCL5因子水平。结论三阳合治法对于流感病毒性肺炎小鼠具有较好的保护作用,可通过多靶点、多通路发挥抗病毒作用。

关键词：麻杏石甘汤小柴胡汤流感网络药理分子对接

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Simulation and evaluation study of atmospheric aerosol nonsphericity as a function of particle size

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Particuology 2024年第7期90卷 281-291页

作者： Qianjun Mao Xin nie School of Urban Construction Wuhan University of Science and TechnologyWuhan430065China College of New Energy and Materials Northeast Petroleum UniversityDaqing163318China

Aerosol nonsphericity causes great uncertainty in radiative forcing assessments and climate *** considerable studies have attempted to quantify this uncertainty,the relationship between aerosol nonsphericity and particle size is usually not considered,thus reducing the accuracy of the *** this study,a coupled inversion algorithm combining an improved stochastic particle swarm optimization algorithm and angular light scattering is used for the nonparametric estimation of aerosol nonsphericity variation with particle size,and the optimal sample selection method is employed to screen the *** on the verification of inversion accuracy,the variation of aerosol aspect ratio with particle size based on the ellipsoidal model in global regions has been obtained from Aerosol Robotic Network(AERONET)data,and the effect of nonsphericity on radiative forcing and dry deposition has been *** results show that the aspect ratio increases with particle size in all regions,with the maximum ranging from 1.4 to 1.8 in the desert,reflecting the differences in aerosol composition at different particle *** radiation calculations,considering aerosol nonsphericity makes the aerosol cooling effect weaker and surface radiative fluxes increase,but hardly changes the aerosol absorption,with maximum differences of 9.22%and 22.12%at the bottom and top of the atmosphere,***,the differences in radiative forcing between aspect ratios as a function of particle size and not varying with particle size are not significant,averaging less than 2%.Besides,the aspect ratio not varying with particle size underestimates the deposition velocity of small particles and overestimates that of large particles compared to that as a function of particle size,with maximum differences of 7%and 4%,respectively.

关键词： Aerosol nonsphericity Inversion Aspect ratio Radiative forcing Dry deposition velocity

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Comprehensive insights:unraveling the mechanisms of gut commensals in glucose metabolism regulation

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Science China(Life Sciences) 2024年第2期67卷 414-417页

作者： Zhipeng Li Qixing nie Shao-Ping nie State Key Laboratory of Food Science and Resources China-Canada Joint Lab of Food Science and Technology(Nanchang)Key Laboratory of Bioactive Polysaccharides of Jiangxi ProvinceNanchang UniversityNanchang 330047China

The prevalence of type 2 diabetes(T2D)has escalated to a global epidemic,garnering widespread *** research utilizing germ-free(GF)mice,antibiotic treatments,and fecal microbiota transplantation approaches has established the critical role of gut microbiota in modulating glucose *** microbiota interacts with diets and the mucosal immune system,influencing intestinal permeability and the penetration of microbial products.

关键词： metabolism utilizing insight

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Recent advances in small-scale hydrogel-based robots for adaptive biomedical applications

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Nano Research 2024年第2期17卷 649-662页

作者： Mingzhe nie Qilong Zhao Xuemin Du Institute of Biomedical&Health Engineering Shenzhen Institute of Advanced Technology(SIAT)Chinese Academy of Sciences(CAS)Shenzhen 518055China

Small-scale robots,ranging in size from micrometers to centimeters,have gained significant attention in the biomedical ***,conventional small-scale robots made of rigid materials encounter challenges in adapting themselves to the soft tissues and complicated environments of human *** to the rigid counterpart,small-scale hydrogel-based robots hold great promises due to their tissue-like low modulus,outstanding biocompatibility and accessible stimuli-responsive *** attributes offer small-scale hydrogel-based robots with multimodal locomotion and reinforced functions,further enhancing the adaptability in manipulation and tasks execution for various biomedical *** this review,we present recent advances in small-scale hydrogel-based *** first summarize the design principles of small-scale hydrogel-based robots including materials,fabrication techniques and manipulation strategies,then highlighting their upgraded functions and adaptive biomedical ***,we discuss existing challenges and future perspectives for small-scale hydrogel-based robots.

关键词： small-scale robot hydrogel locomotion multi-function adaptability

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Collectively induced transparency and absorption in waveguide quantum electrodynamics with Bragg atom arrays

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Communications in Theoretical Physics 2024年第8期76卷 19-28页

作者： Haolei Cheng Wei nie Center for Joint Quantum Studies and Department of Physics School of ScienceTianjin UniversityTianjin 300350China Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology Tianjin UniversityTianjin 300350China

Collective quantum states, such as subradiant and superradiant states, are useful for controlling optical responses in many-body quantum systems. In this work, we study novel collective quantum phenomena in waveguide-coupled Bragg atom arrays with inhomogeneous *** atoms without free-space dissipation, collectively induced transparency is produced by destructive quantum interference between subradiant and superradiant states. In a large Bragg atom array, multi-frequency photon transparency can be obtained by considering atoms with different frequencies. Interestingly, we find collectively induced absorption(CIA) by studying the influence of free-space dissipation on photon transport. Tunable atomic frequencies nontrivially modify decay rates of subradiant states. When the decay rate of a subradiant state equals to the free-space dissipation, photon absorption can reach a limit at a certain frequency. In other words, photon absorption is enhanced with low free-space dissipation, distinct from previous photon detection schemes. We also show multi-frequency CIA by properly adjusting atomic frequencies. Our work presents a way to manipulate collective quantum states and exotic optical properties in waveguide quantum electrodynamics(QED) systems.

关键词： waveguide quantum electrodynamics collective quantum states photon absorption Bragg atom array

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Matched Volterra reduced-order model for an airfoil undergoing periodic translation

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Chinese Journal of Aeronautics 2024年第1期37卷 19-23页

作者： Lianrui nie Ziniu WU Department of Engineering Mechanics Tsinghua UniversityBeijing 100084China

This paper is devoted to application of the Reduced-Order Model(ROM)based on Volterra series to prediction of lift and drag forces due to airfoil periodic translation in transonic flow *** there is large amplitude oscillation of the relative Mach number,as appeared in helicopter rotor movement in forward flight,the conventional Volterra ROM is found to be *** cover such applications,a matched Volterra ROM,inspired from previous multistep nonlinear indicial response method based on Duhamel integration,is thus considered,in which the step motions are defined inside a number of equal intervals with both positive and negative step motions to match the airfoil forward and backward movement,and the kernel functions are constructed independently at each *** shows that,at least for the translation movement considered,this matched Volterra ROM greatly improves the accuracy of ***,the matched Volterra ROM,with the total number of step motions and thus the computational cost close to those of the conventional Volterra ROM method,has the additional advantage that the same set of kernels can match various translation motions with different starting conditions so the kernels can be predesigned without knowing the specific motion of airfoil.

关键词： Airfoil periodic translation Lift and drag Reduced-order model Transonic flow Unsteady flow

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A variable structure passivity control method for elastic joint robots based on cascaded high-order state estimation

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Science China(Technological Sciences) 2024年第2期67卷 395-407页

作者： ZHANG JieXin nie PingYun ZHANG Bo State Key Laboratory of Mechanical System and Vibration School of Mechanical EngineeringShanghai Jiao Tong UniversityShanghai200240China

Passivity-based controllers are widely used to facilitate physical interaction between humans and elastic joint robots,as they enhance the stability of the interaction ***,the joint position tracking performance can be limited by the structures of these controllers when the system is faced with uncertainties and rough high-order system state measurements(such as joint accelerations and jerks).This study presents a variable structure passivity(VSP)control method for joint position tracking of elastic joint robots,which combines the advantages of passive control and variable structure *** method ensures the tracking error converges in a finite time,even when the system faces *** method also preserves the passivity of the ***,a cascaded observer,called CHOSSO,is also proposed to accurately estimate high-order system states,relying only on position and velocity *** observer allows independent implementation of disturbance compensation in the acceleration and jerk estimation *** particular,the observer has an enhanced ability to handle fast time-varying disturbances in physical human-robot *** effectiveness of the proposed method is verified through simulations and experiments on a lower limb rehabilitation robot equipped with elastic joints.

关键词： motion control elastic joint robot finite-time convergence high-order system state estimation physical human-robot interaction

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Fabrication of micro-nano patterned materials mimicking the topological structure of extracellular matrix for biomedical applications

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Nano Research 2024年第5期17卷 4244-4258页

作者： Yifeng nie Dong Han Xiang Li CAS Center for Excellence in Nanoscience National Center for Nanoscience and TechnologyBeijing 100190China School of Future Technology University of Chinese Academy of SciencesBeijing 100049China

With the advent of tissue engineering and biomedicine,the creation of extracellular matrix(ECM)biomaterials for in vitro applications has become a prominent and promising *** ECM materials provide physical,biochemical,and mechanical properties that guide cellular behaviors,such as proliferation,differentiation,migration,and *** micro-and nano-patterned materials have a unique surface topology and low energy replication process that directly affect cellular biological behaviors at the interface,the fabrication of micro-nano pattern biomaterials and the regulation of surface physical and chemical properties are of great significance in the fields of cell regulation,tissue engineering,and regenerative ***,we provide a comprehensive review of the progress in the fabrication and application of patterned materials based on the coupling of mechanical action at the micro-and nano-meter scale,including photolithography,micro-contact printing,electron beam lithography,electrospinning,and 3D printing ***,a summary of the fabrication process,underlying principles,as well as the advantages and disadvantages of various technologies are *** also discuss the influence of material properties on the fabrication of micro-and nano-patterns.

关键词： micro/nano hybrid materials patterning fabrication techniques extracellular matrix substrate-cell interaction biomedical engineering

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