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A review on recent taxonomic updates of gut bacteria associated with social bees,with a curated genomic reference database

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Insect science 2025年第1期32卷 2-23页

作者： Chengfeng Yang Jiawei Hu Qinzhi Su Zijing Zhang Yating Du Jieni Wang Huihui Sun Benfeng Han Junbo Tang Lizhen Guo Hu Li Wanzhi Cai Hao Zheng Xin Zhou Xue Zhang Department of Entomology College of Plant ProtectionChina Agricultural UniversityBeijingChina Sanya Institute of China Agricultural University Hainan ProvinceChina College of Food Science and Nutritional Engineering China Agricultural UniversityBeijingChina Beijing Laboratory of Biomedical Materials Department of Geriatric DentistryPeking University School and Hospital of StomatologyBeijingChina Hebei Key Laboratory of Animal Physiology Biochemistry and Molecular BiologyCollege of Life SciencesHebei Normal UniversityShijiazhuangChina

Honeybees and bumblebees play a crucial role as essential *** special gut microbiome of social bees is a key factor in determining the overall fitness and health of the *** bees harbor relatively simple microbial communities at the genus level,recent studies have unveiled significant genetic divergence and variations in gene content within each bacterial ***,a comprehensive and refined genomics-based taxonomic database specific to social bee gut microbiomes remains ***,we first provided an overview of the current knowledge on the distribution and function of social bee gut bacteria,as well as the factors that influence the gut population *** then consolidated all available genomes of the gut bacteria of social bees and refined the species-level taxonomy,by constructing a maximum-likelihood core genome phylogeny and calculating genome-wide pairwise average nucleotide *** the basis of the refined species taxonomy,we constructed a curated genomic reference database,named the bee gut microbe genome sequence database(BGM-GDb).To evaluate the species-profiling performance of the curated BGM-GDb,we retrieved a series of bee gut metagenomic data and inferred the species-level composition using metagenomic intra-species diversity analysis system(MIDAS),and then compared the results with those obtained from a prebuilt MIDAS *** found that compared with the default database,the BGM-GDb excelled in aligned read counts and bacterial ***,this high-resolution and precise genomic reference database will facilitate research in understanding the gut community structure of social bees.

关键词： bacterial species BGM-GDb corbiculate bees gut microbiome phylogeny phylotype

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White matter regeneration induced by aligned fibrin nanofiber hydrogel contributes to motor functional recovery in canine T12 spinal cord injury

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Regenerative Biomaterials 2022年第1期9卷 260-270页

作者： Zheng Cao Weitao Man Yuhui Xiong Yi Guo Shuhui Yang Dongkang Liu He Zhao Yongdong Yang Shenglian Yao Chuzhong Li Lingyun Zhao Xiaodan Sun Hua Guo Guihuai Wang Xiumei Wang State Key Laboratory of New Ceramics and Fine Processing Key Laboratory of Advanced MaterialsSchool of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Department of Neurosurgery Beijing Tsinghua Changgung HospitalSchool of Clinical MedicineTsinghua UniversityBeijing 102218China Center for Biomedical Imaging Research Tsinghua UniversityBeijing 100084China Department of Orthopedics Dongzhimen HospitalBeijing 100007China School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China Beijing Neurosurgical Institute Beijing Tiantan HospitalBeijing 100070China

A hierarchically aligned fibrin hydrogel(AFG)that possesses soft stiffness and aligned nanofiber structure has been successfully proven to facilitate neuroregeneration in vitro and in ***,its potential in promoting nerve regeneration in large animal models that is critical for clinical translation has not been sufficiently ***,the effects of AFG on directing neuroregeneration in canine hemisected T12 spinal cord injuries were *** obvious white matter regeneration consisting of a large area of consecutive,compact and aligned nerve fibers is induced by AFG,leading to a significant motor functional *** canines with AFG implantation start to stand well with their defective legs from 3 to 4 weeks postoperatively and even effortlessly climb the steps from 7 to 8 ***,high-resolution multi-shot diffusion tensor imaging illustrates the spatiotemporal dynamics of nerve regeneration rapidly crossing the lesion within 4 weeks in the AFG *** findings indicate that AFG could be a potential therapeutic vehicle for spinal cord injury by inducing rapid white matter regeneration and restoring locomotion,pointing out its promising prospect in clinic practice.

关键词： aligned fibrin hydrogel spinal cord injury white matter regeneration diffusion tensor imaging canine

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Dual-sized hollow particle incorporated fibroin thermal insulating coatings on catheter for cerebral therapeutic hypothermia

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Bioactive materials 2023年第8期26卷 116-127页

作者： Ming Li Yuan Gao Miaowen Jiang Hongkang Zhang Yang Zhang Yan Wu Wenhao Zhou Di Wu Chuanjie Wu Longfei Wu Luzi Bao Xiaoxiao Ge Zhengfei Qi Ming Wei Ang Li Yuchuan Ding Jicheng Zhang Guangzhen Pan Yu Wu Yan Cheng Yufeng Zheng Xunming Ji China-America Institute of Neuroscience and Beijing Institute of Geriatrics Xuanwu HospitalCapital Medical UniversityBeijing100053China School of Instrumentation and Optoelectronic Engineering Beihang UniversityBeijing100191China Beijing Institute for Brain Disorders Capital Medical UniversityBeijing100069China School of Materials Science and Engineering Peking UniversityBeijing100871China Shaanxi Key Laboratory of Biomedical Metallic Materials Northwest Institute for Nonferrous Metal ResearchXi’an710016China Department of Biomedical Engineering Columbia UniversityNew York CityNY10027USA Department of Neurosurgery Wayne State University School of MedicineDetroitMI48201USA Gong Yi Van-research Innovation Composite Material Co.Ltd Zheng Zhou451299China Department of Neurosurgery Xuanwu HospitalCapital Medical UniversityBeijing100053China

Selective endovascular hypothermia has been used to provide cooling-induced cerebral neuroprotection,but current catheters do not support thermally-insulated transfer of cold infusate,which results in an increased exit temperature,causes hemodilution,and limits its cooling ***,air-sprayed fibroin/silica-based coatings combined with chemical vapor deposited parylene-C capping film was prepared on *** coating features in dual-sized-hollow-microparticle incorporated structures with low thermal *** infusate exit temperature is tunable by adjusting the coating thickness and infusion *** peeling or cracking was observed on the coatings under bending and rotational scenarios in the vascular *** efficiency was verified in a swine model,and the outlet temperature of coated catheter(75μm thickness)was 1.8-2.0◦C lower than that of the uncoated *** pioneering work on catheter thermal insulation coatings may facilitate the clinical translation of selective endovascular hypothermia for neuroprotection in patients with acute ischemic stroke.

关键词： Silk fibroin Thermal insulation coating Catheter Stroke Hypothermia

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Non-invasive remote assessment of tissue fibrogenesis using Brillouin microscopy 12

Non-invasive remote assessment of tissue fibrogenesis using ...

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Optical Elastography and Tissue Biomechanics XII 2025

作者： Cheburkanov, Vsevolod Kizilov, Mykyta Jung, Sujeong Berezin, Mikhail Y. Yakovlev, Vladislav V. Department of Biomedical Engineering Texas A&M University College StationTX United States Department of Physics and Astronomy Texas A&M University College StationTX United States Department of Radiology Washington University School of Medicine St. LouisMO United States The Institute of Materials Science & Engineering Washington University St. LouisMO United States

ISBN: (纸本)9781510683907

Fibrosis is a physiological condition marked by the excessive deposition of extracellular matrix (ECM) components, resulting in tissue stiffening and impaired organ function. Accurately quantifying and mapping the mechanical properties of fibrotic tissues is essential for diagnosis, tracking disease progression, and assessing efficacy of therapeutic interventions. In this study, we utilize Brillouin microspectroscopy, a non-invasive, label-free optical technique, to quantify the mechanical properties of fibrotic tissue in an in situ dermal wound healing model. We demonstrate that Brillouin spectroscopy effectively distinguishes fibrotic tissue from healthy tissue based on microscopic changes in stiffness and enables monitoring of dynamic alterations in viscoelastic properties of the tissue injury site during fibrogenesis. Our pioneering work shows Brillouin spectroscopy as a promising method for in vivo characterization of both fibrogenesis and wound healing in general. Our findings highlight Brillouin spectroscopy's potential as a diagnostic and monitoring tool for fibrotic diseases, with significant implications for both laboratory research and clinical applications in conditions such as human liver cirrhosis, pulmonary fibrosis, and cardiac fibrosis. © 2025 SPIE.

关键词： Diagnosis

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Biodegradable Zn–Sr alloys with enhanced mechanical and biocompatibility for biomedical applications

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Smart materials in Medicine 2022年 3卷 117-127页

作者： Su, Yingchao Fu, Jiayin Du, Shaokang Georgas, Elias Qin, Yi-Xian Zheng, Yufeng Wang, Yadong Zhu, Donghui Department of Biomedical Engineering Stony Brook University Stony BrookNY United States Nancy E. and Peter C. Meinig School of Biomedical Engineering Cornell University IthacaNY United States Department of Cardiology The First Affiliated Hospital School of Medicine Zhejiang University HangzhouZhejiang China Academy for Advanced Interdisciplinary Studies Peking University Beijing China School of Materials Science and Engineering Peking University Beijing China

Zinc (Zn) is a new generation of biodegradable metal as temporary biomedical implants with a promising degradation rate. However, its clinical applications have been limited because of the insufficient mechanical properties. Considering the degradation property and biocompatibility, we proposed Zn–Sr alloys after extrusion treatments to simultaneously improve the mechanical strength and ductility. The in vitro and in vivo degradation and biocompatibility were also evaluated using electrochemical and immersion corrosion tests, various cell and bacterial models, together with subcutaneous and femoral implantations in rats. Results showed that the extruded Zn-0.7Sr alloys exhibited two times higher mechanical strengths (∼120 MPa) and better ductility (∼10%) than the pure Zn counterparts. The Zn–Sr alloys provided enhanced in vitro and in vivo biocompatibility along with promising antibacterial properties. © 2021 The Authors

关键词： Biocompatibility

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Plasma functionalized MoSe2 for efficient nonenzymatic sensing of hydrogen peroxide in ultra-wide pH range

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SmartMat 2022年第3期3卷 491-502页

作者： Yang Luo Donghai Wu Zehui Li Xiao‐Yan Li Yinghong Wu Shien‐Ping Feng Carlo Menon Houyang Chen Paul K.Chu Department of Physics Department of Materials Science and Engineeringand Department of Biomedical EngineeringCity University of Hong KongHong KongChina Empa Swiss Federal Laboratories for Materials Science and TechnologyETH DomainDübendorfSwitzerland Centre for Water Technology and Policy Department of Civil EngineeringThe University of Hong KongHong KongChina Henan Key Laboratory of Nanocomposites and Applications Institute of Nanostructured Functional MaterialsHuanghe S&T UniversityZhengzhouChina State Key Laboratory for Mesoscopic Physics Collaborative Innovation Center of Quantum MatterSchool of PhysicsPeking UniversityBeijingChina Biomedical and Mobile Health Technology Lab Department of Health Sciences and TechnologyETH ZürichZürichSwitzerland Department of Mechanical Engineering The University of Hong KongHong KongChina Department of Chemical and Biological Engineering State University of New York at BuffaloNew YorkUSA

Enzymatic sensors have inherent problems such as the low stability and limited pH range in industrial and biomedical applications and therefore,more efficient nonenzymatic sensors are highly ***,plasmafunctionalized defective MoSe_(2)is prepared and studied as a highly efficient catalyst for electrochemical sensing of H_(2)O_(2).Experiments and theoretical computations show that the plasma-induced Se multi-vacancies and nitrogen dopants generate new active sites,expose more edge active surfaces,narrow the bandgap,and strengthen binding with the·OH intermediate,which imparts new fundamental knowledge about the roles of defects in *** defective MoSe_(2)-catalyzed sensor delivers competitive performance in hydrogen peroxide detection such as a low detection limit of 12.6 nmol/L,wide operational pH range of 1−13,good long-term stability,and high *** portable sensor produced by screen printing confirms the excellent commercial potential and in addition,the results not only reveal a novel concept to design and fabricate high-performance sensors for H_(2)_(O2)but also provide insights into the effectiveness of surface modification of diverse catalytic materials.

关键词： MoSe_(2) plasma functionalization electrochemical sensors hydrogen peroxides portable devices

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Crosstalk between PC 12 cells and endothelial cells in an artificial neurovascular niche constructed by a dual-functionalized selfassembling peptide nanofiber hydrogel

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Nano Research 2022年第2期15卷 1433-1445页

作者： Zhe Zhang Yi Chai He Zhao Shuhui Yang Wei Liu Zihui Yang Weilong Ye Chenlong Wang Xiaohan Gao Xiangdong Kong Xiaodan Sun Lingyun Zhao Tuoyu Chen Yuqi Zhang Jiaju Lu Xiumei Wang State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Department of Neurosurgery Yuquan HospitalSchool of Clinical MedicineTsinghua UniversityBeijing 100084China Institute of Smart Biomedical Materials School of Materials Science and EngineeringZhejiang Sci-Tech UniversityHangzhou 310018China Department of orthopedics Dongzhimen hospitalBeijing University of Chinese MedicineBeijing 100700China Department of Neurosurgery The First Hospital of Hebei Medical UniversityShijiazhuang 050000China Department of Obstetrics and Gynecology Beijing Tsinghua Changgung HospitalBeijing 102218China Department of Chemistry Tsinghua UniversityBeijing 100084China

The coordination between neurogenesis and angiogenesis plays an important role in nerve tissue development and ***,using bioactive materials to drive neurogenic and angiogenic responses has gained increasing *** the neurovascular link between regulatory cues offers valuable insight into the mechanisms underlying nerve regeneration and the design of new bioactive *** this study,we utilized a dual-functionalized peptide nanofiber hydrogel presenting the brain-derived neurotrophic factor and vascular endothelial growth factor mimetic peptides RGIDKRHWNSQ(RGI)and KLTWQELYQLKYKGI(KLT)to construct an artificial neurovascular *** dual-functionalized peptide nanofiber hydrogel enhanced the neurite outgrowth of pheochromocytoma(PC12)cells and tube-like structures formation of human umbilical vein endothelial cells(HUVECs)in vitro,and promoted rapid lesion infiltration of neural and vascular cells in a rat brain injury *** indirect co-culture models,we found that the dual-functionalized peptide hydrogel effectively mediated neurovascular crosstalk by regulating secretion of paracrine factors from PC12 cells and *** the two cells types were directly co-cultured on the dua卜functionalized peptide hydrogel,the efficiency of cell-cell communication was enhanced,which further accelerated the differentiation and maturation of PC12 cells with an increased number of pseudopodia and spread morphology,and HUVECs tube-like structure *** summary,the dual-functionalized peptide nanofiber hydrogel successfully formed an artificial neurovascular niche to directly regulate the behaviors of neural and vascular cells and promote their neurovascular crosstalk through paracrine signaling and direct cell-cell contact.

关键词： neurovascular microenvironment self-assembling peptide co-culture nanofiber hydrogel brain injury

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Molecular simulation-guided and physics-informed mechanistic modeling of multifunctional polymers

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Acta Mechanica Sinica 2021年第5期37卷 725-745,I0002页

作者： Guang Chen Weikang Xian Qiming Wang Ying Li Department of Mechanical Engineering University of ConnecticutStorrsCT 06269USA Sonny Astani Department of Civil and Environmental Engineering University of Southern CaliforniaLos AngelesCA 90089USA Department of Mechanical Engineering and Polymer Program Institute of Materials ScienceUniversity of ConnecticutStorrsCT 06269USA

Polymeric materials have a broad range of mechanical and physical *** have been widely used in material science,biomedical engineering,chemical engineering,and mechanical *** introduction of active elements into the soft matrix of polymers has enabled much more diversified functionalities of polymeric materials,such as self-healing,electroactive,magnetosensitive,pH-responsive,and many *** further enable applications of these multifunctional polymers,a mechanistic modeling method is required and of great significance,as it can provide links between materials’micro/nano-structures and their macroscopic mechanical *** this goal,molecular simulation plays an important role in understanding the deformation and evolution of polymer networks under external loads and *** molecular insights provide physical guidance in the formulation of mechanistic-based continuum models for multifunctional *** this perspective,we present a molecular simulation-guided and physics-informed modeling framework for polymeric ***,the physical theory for polymer chains and their networks is briefly *** serves as the foundation for mechanistic-models of polymers,linking their chemistry,physics,and mechanics ***,the deformation of the polymer network is used to derive the strain energy density ***,the corresponding continuum models can capture the intrinsic deformation mechanisms of polymer *** then highlight several representative examples across multiphysics coupling problems to describe in detail for this proposed *** but not least,we discuss potential challenges and opportunities in the modeling of multifunctional polymers for future research directions.

关键词： Molecular simulation Multiphysics modeling Multiscale modeling Multifunctional polymers Soft Matter

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Super-Resolution of Diffusion-Weighted Images via TDI-Conditioned Diffusion Model 15th

Super-Resolution of Diffusion-Weighted Images via TDI-Cond...

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15th International Workshop on Computational Diffusion MRI, CDMRI 2024, held in conjunction with 27th International Conference on Medical Image Computing and Computer-Assisted Intervention, MICCAI 2024

作者： Ma, Jiquan Teng, Yujun Chen, Geng Jiang, Haotian Zhang, Kai Liu, Feihong Rekik, Islem Shen, Dinggang School of Computer Science and Technology Heilongjiang University Harbin China National Engineering Laboratory for Integrated Aero-Space-Ground-Ocean Big Data Application Technology School of Computer Science and Engineering Northwestern Polytechnical University Xi’an China School of Biomedical Engineering and State Key Laboratory of Advanced Medical Materials and Devices ShanghaiTech University Shanghai China School of Information Science and Technology Northwest University Xi’an China BASIRA Lab Imperial-X and Department of Computing Imperial College London London United Kingdom

ISBN: (纸本)9783031869198

Diffusion-Weighted Imaging (DWI) is a significant technique for studying white matter. However, it suffers from low-resolution obstacles in clinical settings. Post-acquisition Super-Resolution (SR) can enhance the resolution of DWIs and has gained increasing research interest in recent years. An advanced generative model, the Diffusion Model (DM), exhibits particularly promising performance in image SR. However, effective conditions are required to bootstrap the DM for DWI SR. To this end, we proposed the first DM-based DWI SR model with two effective conditions based on low-solution DWIs and Track Density Imaging (TDI) maps, which possess rich high-resolution prior knowledge Additionally, we consider another condition based on features from low-resolution DWIs. These two conditions are integrated into our model, which comprises three components: DWI Resolution Enhancer (DRE), DWI Feature Extractor (DFE), and TDI Feature Extractor (TFE). DRE combines low-resolution DWI features from DFE with TDI features from TFE to progressively generate high-resolution DWIs. We performed extensive experiments on DWIs of normal subjects from human connectome projects and patients with Parkinson’s disease. The results demonstrate that our model outperforms existing DWI SR models, both qualitatively and quantitatively. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.

关键词： Neurodegenerative diseases

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Edge atomic Fe sites decorated porous graphitic carbon as an efficient bifunctional oxygen catalyst for Zinc-air batteries

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Journal of Energy Chemistry 2023年第8期83卷 602-611,I0014页

作者： Ruihui Gan Yali Wang Xiangwu Zhang Yan Song Jingli Shi Chang Ma Tianjin Municipal Key Lab of Advanced Fiber and Energy Storage Technology Tiangong UniversityTianjin 300387China Fiber and Polymer Science Program Department of Textile EngineeringChemistry and ScienceWilson College of TextilesNorth Carolina State UniversityRaleighNC 27695-8301uNITED sTATES CAS Key Laboratory of Carbon Materials Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001ShanxiChina

The development of advanced bifunctional oxygen electrocatalysts for oxygen reduction and evolution reactions(ORR and OER) is critical to the practical application of zinc-air batteries(ZABs). Herein, a silica-assisted method is reported to integrate numerous accessible edge Fe-Nx sites into porous graphitic carbon(named Fe-N-G) for achieving highly active and robust oxygen electrocatalysis. Silica facilitates the formation of edge Fe-Nx sites and dense graphitic domains in carbon by inhibiting iron *** purification process creates a well-developed mass transfer channel for Fe-N-G. Consequently,Fe-N-G delivers a half-wave potential of 0.859 V in ORR and an overpotential of 344 m V at10 m A cm^(-2)in OER. During long-term operation, the graphitic layers protect edge Fe-Nx sites from demetallation in ORR and synergize with Fe OOH species endowing Fe-N-G with enhanced OER *** functional theory calculations reveal that the edge Fe-Nx site is superior to the in-plane Fe-Nx site in terms of OH* dissociation in ORR and OOH* formation in OER. The constructed ZAB based on Fe-N-G cathode shows a higher peak power density of 133 m W cm^(-2)and more stable cycling performance than Pt/C + RuO2counterparts. This work provides a novel strategy to obtain high-efficiency bifunctional oxygen electrocatalysts through space mediation.

关键词： Bifunctionality EdgeFe-Nxsites Oxygen catalysis Graphitic domains Zinc-air batteries

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