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Piezoelectric film promotes skin wound healing with enhanced collagen deposition and vessels regeneration via upregulation of PI3K/AKT

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Nano research 2024年第8期17卷 7461-7478页

作者： Qi Xu Wufei Dai Peizhe Li Qinglin Li Zhen Gao Xiaoli Wu Wei Liu Wenbo Wang Department of Plastic and Reconstructive Surgery Shanghai Key Laboratory of Tissue EngineeringShanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineShanghai 200011China research Institute of Plastic Surgery Shandong Second Medical UniversityWeifang 261000China Department of Surgery Air Force Medical CenterPLABeijing 100142China

Skin wounds are common in accidental injuries,and the intricacies of wound repair are closely linked to endogenous electric *** stimulation plays a pivotal role in the restorative processes of skin injuries,encompassing collagen deposition,angiogenesis,inflammation,and *** electrical stimulation therapy replicates and enhances the effects of endogenous wound electric fields by applying an external electric field to the wound site,thereby promoting skin wound *** this study,we developed a self-powered repetitive mechanical impacts-electrical stimulation(RMI-ES)system utilizing a BaTiO3/polydimethylsiloxane(PDMS)piezoelectric composite *** to conventional electrical stimulation devices,the fabricated piezoelectric composite film efficiently harvests energy from the pressure applied by the stimulation device and the tensile force occurring during natural rat *** results demonstrated that piezoelectric stimulation generated by the composite membrane expedited the cell cycle,promoting fibroblast ***,piezoelectric stimulation induced favorable changes in fibroblast gene expression,including increased expression of transforming growth factor-β1(TGF-β1),connective tissue growth factor(CTGF),collagen 1,collagen 3,vascular endothelial growth factor(VEGF),and alpha-smooth muscle actin(α-SMA),while reducing interleukin-6(IL-6)*** analysis revealed that piezoelectric stimulation may induce fibroblast migration,proliferation,and collagen expression by influencing PI3K/AKT serine/threonine kinase(AKT)*** confirmation through the addition of the PI3K inhibitor LY294002 validated that piezoelectric stimulation can regulate the repair process after skin injury through the ***,in vivo results demonstrated that the electric field at the wound site effectively promoted wound healing,reduced inflammation,and stimulated collagen deposition and neova

关键词： BaTiO3/polydimethylsiloxane(PDMS)nano-composite membrane piezoelectrical stimulation skin wound healing collagen deposition PI3K/AKT serine/threonine kinase(AKT)signaling pathway

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Timp1 Deletion Induces Anxiety-like Behavior in Mice

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Neuroscience Bulletin 2024年第6期40卷 732-742页

作者： Xiaotong Wang Wei Zheng Ziyi Zhu Biyu Xing Weijie Yan Ke Zhu Lingli Xiao Chaojuan Yang Mengping Wei Lei Yang Zi-Bing Jin Xueyun Bi Chen Zhang State Key Laboratory of Neurology and Oncology Drug Development Nanjing210000China School of Basic medical Sciences Wenzhou Medical UniversityWenzhou325035China School of Basic medical Sciences Beijing Key Laboratory of Neural Regeneration and RepairAdvanced Innovation Center for Human Brain ProtectionBeijing Laboratory of Oral HealthCapital Medical UniversityBeijing100069China Beijing Institute of Ophthalmology Beijing Tongren Eye CenterBeijing Tongren HospitalCapital Medical UniversityBeijing100005China Chinese Institute for Brain research Beijing102206China Key Laboratory for Biomechanics and Mechanobiology of the Ministry of Education Beijing Advanced Innovation Center for Biomedical EngineeringSchool of Engineering MedicineBeihang UniversityBeijing100191China

The hippocampus is essential for learning and memory,but it also plays an important role in regulating emotional behavior,as hippocampal excitability and plasticity affect anxiety and *** synaptic plasticity may be regulated by tissue inhibitor of matrix metalloproteinase 1(TIMP1),a known protein inhibitor of extracellular matrix(ECM),and the expression of TIMP1 in the hippocampus can be induced by neuronal excitation and various ***,the involvement of Timp1 in fear learning,anxiety,and hippocampal synaptic function remains to be *** study of Timp1 function in vivo revealed that Timp1 knockout mice exhibit anxiety-like behavior but normal fear *** results suggested that Timp1 knockout mice showed hyperactivity in the ventral CA1 region,but the basic synaptic transmission and plasticity were normal in the Schaffer collateral *** together,our results suggest that deletion of Timp1 in vivo leads to the occurrence of anxiety behaviors,but that Timp1 is not crucial for fear learning.

关键词： Timp1 Anxiety Fear Synaptic transmission Synaptic plasticity

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Inducing mitochondriopathy-like damages by transformable nucleopeptide nanoparticles for targeted therapy of bladder cancer

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National Science Review 2024年第4期11卷 216-227页

作者： Da-Yong Hou Ni-Yuan Zhang Lu Wang Mei-Yu Lv Xiang-Peng Li Peng Zhang Yue-Ze Wang Lei Shen Xiu-Hai Wu Bo Fu Peng-Yu Guo Zi-Qi Wang Dong-Bing Cheng Hao Wang Wanhai Xu NHC and CAMS Key Laboratory of Molecular Probe and Targeted Theranostics Heilongjiang Key Laboratory of Scientific Research in Urology Harbin Medical University Department of Urology Harbin Medical University Cancer Hospital CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety CAS Center for Excellence in NanoscienceNational Center for Nanoscience and Technology(NCNST) School of Chemistry Chemical Engineering & Life Science Hubei Key Laboratory of Nanomedicine for Neurodegenerative Diseases Wuhan University of Technology

Mitochondriopathy inspired adenosine triphosphate(ATP) depletions have been recognized as a powerful way for controlling tumor growth. Nevertheless, selective sequestration or exhaustion of ATP under complex biological environments remains a prodigious challenge. Harnessing the advantages of in vivo self-assembled nanomaterials, we designed an Intracellular ATP Sequestration(IAS) system to specifically construct nanofibrous nanostructures on the surface of tumor nuclei with exposed ATP binding sites,leading to highly efficient suppression of bladder cancer by induction of mitochondriopathy-like ***, the reported transformable nucleopeptide(NLS-FF-T) self-assembled into nuclear-targeted nanoparticles with ATP binding sites encapsulated inside under aqueous conditions. By interaction with KPNA2, the NLS-FF-T transformed into a nanofibrous-based ATP trapper on the surface of tumor nuclei,which prevented the production of intracellular energy. As a result, multiple bladder tumor cell lines(T24,EJ and RT-112) revealed that the half-maximal inhibitory concentration(IC50) of NLS-FF-T was reduced by approximately 4-fold when compared to NLS-T. Following intravenous administration, NLS-FF-T was found to be dose-dependently accumulated at the tumor site of T24 xenograft mice. More significantly, this IAS system exhibited an extremely antitumor efficacy according to the deterioration of T24 tumors and simultaneously prolonged the overall survival of T24 orthotopic xenograft mice. Together, our findings clearly demonstrated the therapeutic advantages of intracellular ATP sequestration-induced mitochondriopathy-like damages, which provides a potential treatment strategy for malignancies.

关键词： self-assembly nucleopeptide nanomaterial bladder cancer mitochondriopathy

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Metal natural product complex Ru-procyanidins with quadruple enzymatic activity combat infections from drug-resistant bacteria

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Acta Pharmaceutica Sinica B 2024年第5期14卷 2298-2316页

作者： Jie Shan Xu Jin Cong Zhang Muchen Huang Jianghao Xing Qingrong Li Yuyu Cui Qiang Niu Xu Lin Chen Xianwen Wang Department of Burns the First Affiliated Hospital of Anhui Medical UniversityHefei 230022China School of Biomedical engineering Research and Engineering Center of Biomedical MaterialsAnhui Provincial Institute of Translational MedicineAnhui Medical UniversityHefei 230032China Division of Gastroenterology the First Affiliated Hospital of USTCDivision of Life Science and MedicineUniversity of Science and Technology of ChinaHefeiAnhui 230026China The Second Clinical medical College Anhui Medical UniversityHefei 230022China Department of Oncology the First Affiliated Hospital of Anhui Medical UniversityHefei 230022China College and Hospital of Stomatology Anhui Medical UniversityKey Lab.of Oral Diseases Research of Anhui ProvinceHefei 230032China

Bacterial infection hampers wound repair by impeding the healing ***,inflammation at the wound site triggers the production of reactive oxygen species(ROS),causing oxidative stress and damage to proteins and *** can lead to chronic wounds,posing severe ***,eliminating bacterial infection and reducing ROS levels are crucial for effective wound ***,possessing enzyme-like catalytic activity,can convert endogenous substances into highly toxic substances,such as ROS,to combat bacteria and biofilms without inducing drug ***,the current nanozyme model with single enzyme activity falls short of meeting the complex requirements of antimicrobial ***,developing nanozymes with multiple enzymatic activities is ***,we engineered a novel metalloenzyme called Ru-procyanidin nanoparticles(Ru-PC NPs)with diverse enzymatic activities to aid wound healing and combat bacterial *** acidic conditions,due to their glutathione(GSH)depletion and peroxidase(POD)-like activity,Ru-PC NPs combined with H2O2 exhibit excellent antibacterial ***,in a neutral environment,the Ru-PC NPs,with catalase(CAT)activity,decompose H2O2 to O2,alleviating hypoxia and ensuring a sufficient oxygen ***,Ru-PC NPs possess exceptional antioxidant capacity through their superior superoxide dismutase(SOD)enzyme activity,effectively scavenging excess ROS and reactive nitrogen species(RNS)in a neutral *** maintains the balance of the antioxidant system and prevents ***-PC NPs also promote the polarization of macrophages from M1 to M2,facilitating wound *** importantly,Ru-PC NPs show good biosafety with negligible *** vivo wound infection models have confirmed the efficacy of Ru-PC NPs in inhibiting bacterial infection and promoting wound *** focus of this work highlights the quadruple enzymatic activity of Ru-PC NPs and its potential to reduce inf

关键词： Nanozymes Quadruple enzymatic activity Antibacterial therapy Wound therapy RNA-seqAnti-inflammatory Reactive oxygen species Reactive nitrogen species

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An Improved Binary Quantum-based Avian Navigation Optimizer Algorithm to Select Effective Feature Subset from medical Data:A COVID-19 Case Study

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Journal of Bionic engineering 2024年第1期21卷 426-446页

作者： Ali Fatahi Mohammad H.Nadimi-Shahraki Hoda Zamani Faculty of Computer engineering Najafabad BranchIslamic Azad UniversityNajafabad ***Iran Big Data research center Najafabad BranchIslamic Azad UniversityNajafabad ***Iran

Feature Subset Selection(FSS)is an NP-hard problem to remove redundant and irrelevant features particularly from medical data,and it can be effectively addressed by metaheuristic ***,existing binary versions of metaheuristic algorithms have issues with convergence and lack an effective binarization method,resulting in suboptimal solutions that hinder diagnosis and prediction *** paper aims to propose an Improved Binary Quantum-based Avian Navigation Optimizer Algorithm(IBQANA)for FSS in medical data preprocessing to address the suboptimal solutions arising from binary versions of metaheuristic *** proposed IBQANA’s contributions include the Hybrid Binary Operator(HBO)and the Distance-based Binary Search Strategy(DBSS).HBO is designed to convert continuous values into binary solutions,even for values outside the[0,1]range,ensuring accurate binary *** the other hand,DBSS is a two-phase search strategy that enhances the performance of inferior search agents and accelerates *** combining exploration and exploitation phases based on an adaptive probability function,DBSS effectively avoids local *** effectiveness of applying HBO is compared with five transfer function families and thresholding on 12 medical datasets,with feature numbers ranging from 8 to 10,***'s effectiveness is evaluated regarding the accuracy,fitness,and selected features and compared with seven binary metaheuristic ***,IBQANA is utilized to detect *** results reveal that the proposed IBQANA outperforms all comparative algorithms on COVID-19 and 11 other medical *** proposed method presents a promising solution to the FSS problem in medical data preprocessing.

关键词： Feature subset selection Optimization Binary metaheuristic algorithms Bioinspired Machine learning medical datasets

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Bioactivities,Mechanisms,Production,and Potential Application of Bile Acids in Preventing and Treating Infectious Diseases

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engineering 2024年第7期38卷 13-26页

作者： Shuang Liu Shuo Yang Biljan Blazekovic Lu Li Jidan Zhang Yi Wang Experimental research center China Academy of Chinese Medical SciencesBeijing 100700China Faculty of Pharmacy and Biochemistry University of ZagrebZagreb 10000Croatia

Infectious diseases are a global public health problem,with emerging and re-emerging infectious diseases on the rise ***,their prevention and treatment are still major *** acids are common metabolites in both hosts and microorganisms that play a significant role in controlling the metabolism of lipids,glucose,and *** acids have historically been utilized as first-line,valuable therapeutic agents for related metabolic and hepatobiliary ***,bile acids are the major active ingredients of cow bezoar and bear bile,which are commonly used traditional Chinese medicines(TCMs)with the therapeutic effects of clearing heat,detoxification,and relieving wind and *** recent years,the promising performance of bile acids against infectious diseases has attracted attention from the scientific *** paper reviews for the first time the biological activities,possible mechanisms,production routes,and potential applications of bile acids in the treatment and prevention of infectious *** with previous reviews,we comprehensively summarize existing studies on the use of bile acids against infectious diseases caused by pathogenic microorganisms that are leading causes of global morbidity and *** addition,to ensure a stable supply of bile acids at affordable prices,it is necessary to clarify the biosynthesis of bile acids in vivo,which will assist scientists in elucidating the accumulation of bile acids and discovering how to engineer various bile acids by means of chemosynthesis,biosynthesis,and chemoenzymatic ***,we explore the current challenges in the field and recommend a development strategy for bile-acid-based drugs and the sustainable production of bile *** presented studies suggest that bile acids are potential novel therapeutic agents for managing infectious diseases and can be artificially synthesized in a sustainable way.

关键词： Bile acids Infectious diseases Bioactivities Mechanisms Anti-infective agents

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Biocatalytic stereoselective synthesis of methyl mandelates by engineering a cytochrome P450 hydroxylase

Green Synthesis and Catalysis

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Green Synthesis and Catalysis 2024年第2期5卷 88-93页

作者： Lingzhi Xie Yun Zhang Ruyue Zhang Haibo Cui Baodong Cui Wenyong Han Nanwei Wan Zhi Li Yongzheng Chen Key Laboratory of Biocatalysis&Chiral Drug Synthesis of Guizhou Province Generic Drug Research Center of Guizhou ProvinceGreen Pharmaceuticals Engineering Research Center of Guizhou ProvinceSchool of PharmacyZunyi Medical UniversityZunyi 563000China Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International research Laboratory of Ethnomedicine of Ministry of Education Zunyi Medical UniversityZunyi 563000China Department of Chemical and Biomolecular engineering National University of Singapore 4 Engineering Drive 4Singapore 117585Singapore

Chiral methyl mandelates are useful synthons in organic transformation and pharmaceutical *** synthesis of these valuable compounds by direct C–H activating oxidative hydroxylation has attracted keen *** herein is achieving the stereoselective and efficient bio-hydroxylation of methyl 2-phenylacetates to the chiral methyl mandelates by directed evolution of the cytochrome P450DA *** the present study,a new colorimetric high-throughput screening assay was successfully developed based on a dualenzyme cascade for the engineering of the P450DA's hydroxylation *** beneficial variants with enhanced bio-hydroxylation activity were created by combining random mutagenesis and site-saturated/directed mutagenesis ***-cell bio-hydroxylation of various methyl 2-phenylacetates using the best septupletmutant P450DA-11 yielded the corresponding chiral methyl mandelates in up to 92%isolated yields and>99%ee.

关键词： Bio-hydroxylation Directed evolution Cytochrome P450 High-throughput screening Methyl mandelates

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Expert consensus on irrigation and intracanal medication in root canal therapy

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International Journal of Oral Science 2024年第1期16卷 26-35页

作者： Xiaoying Zou Xin Zheng Yuhong Liang Chengfei Zhang Bing Fan Jingping Liang Junqi Ling Zhuan Bian Qing Yu Benxiang Hou Zhi Chen Xi Wei Lihong Qiu Wenxia Chen Wenxi He Xin Xu Liuyan Meng Chen Zhang Liming Chen Shuli Deng Yayan Lei Xiaoli Xie Xiaoyan Wang Jinhua Yu Jin Zhao Song Shen Xuedong Zhou Lin Yue Department of Cariology and Endodontology Peking University School and Hospital of Stomatology&National Center of Stomatology&National Clinical Research Center for Oral Diseases&National Engineering Laboratory for Digital and Material Technology of Stomatology&Beijing Key Laboratory of Digital Stomatology&Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health&NMPA Key Laboratory for Dental MaterialsBeijingChina center of Stomatology Peking University HospitalBeijingChina State Key Laboratory of Oral Diseases&National center for Stomatology&National Clinical research center for Oral Diseases&West China Hospital of Stomatology Sichuan UniversityChengduChina Department of Emergency Peking University School and Hospital of Stomatology&National Center of Stomatology&National Clinical Research Center for Oral Diseases&National Engineering Laboratory for Digital and Material Technology of Stomatology&Beijing Key Laboratory of Digital Stomatology&Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health&NMPA Key Laboratory for Dental MaterialsBeijingChina Restorative Dental Sciences EndodonticsFaculty of DentistryThe University of Hong KongPok Fu LamHong Kong SARChina State Key Laboratory of Oral&Maxillofacial Reconstruction and Regeneration Key Laboratory of Oral Biomedicine Ministry of EducationHubei Key Laboratory of StomatologySchool&Hospital of StomatologyWuhan UniversityWuhanChina Department of Endodontics Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of MedicineCollege of StomatologyShanghai Jiao Tong UniversityNational Clinical Research Center for Oral DiseasesNational Center for StomatologyShanghai Key Laboratory of StomatologyShanghaiChina Department of Operative Dentistry and Endodontics Hospital of StomatologyGuanghua School of StomatologySun Yat-Sen University&Guangdong Provincial Key Laboratory of StomatologyGuangzhouChina State Key Laboratory of Oral&Maxillofacial Reconstruction and R

Chemical cleaning and disinfection are crucial steps for eliminating infection in root canal treatment. However, irrigant selection or irrigation procedures are far from clear. The vapor lock effect in the apical region has yet to be solved, impeding irrigation efficacy and resulting in residual infections and compromised treatment outcomes.

关键词： treatment irrigation Expert

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FGF7 enhances the expression of ACE2 in human islet organoids aggravating SARS-CoV-2 infection

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Signal Transduction and Targeted Therapy 2024年第5期9卷 2260-2274页

作者： Hao Meng Zhiying Liao Yanting Ji Dong Wang Yang Han Chaolin Huang Xujuan Hu Jingyi Chen Hengrui Zhang Zonghong Li Changliang Wang Hui Sun Jiaqi Sun Lihua Chen Jiaxiang Yin Jincun Zhao Tao Xu Huisheng Liu School of Biomedical engineering Guangzhou Medical UniversityGuangzhou 511495 GuangdongChina Guangzhou National Laboratory Guangzhou 510320 GuangdongChina State Key Laboratory of Respiratory Disease National Clinical Research Center for Respiratory DiseaseGuangzhou Institute of Respiratory HealthThe First Affiliated Hospital of Guangzhou Medical UniversityGuangzhou 510120China center for Translational Medicine Wuhan Jinyintan HospitalWuhan 430023 HubeiChina School of Biomedical Sciences and engineering South China University of TechnologyGuangzhou 510006 GuangdongChina

The angiotensin-converting enzyme 2(ACE2)is a primary cell surface viral binding receptor for SARS-CoV-2,so finding new regulatory molecules to modulate ACE2 expression levels is a promising strategy against *** the current study,we utilized islet organoids derived from human embryonic stem cells(hESCs),animal models and COVID-19 patients to discover that fibroblast growth factor 7(FGF7)enhances ACE2 expression within the islets,facilitating SARS-CoV-2 infection and resulting in impaired insulin *** hESC-derived islet organoids,we demonstrated that FGF7 interacts with FGF receptor 2(FGFR2)and FGFR1 to upregulate ACE2 expression predominantly inβ*** upregulation increases both insulin secretion and susceptibility ofβcells to SARS-CoV-2 *** FGFR counteracts the FGF7-induced ACE2 upregulation,subsequently reducing viral infection and replication in the ***,retrospective clinical data revealed that diabetic patients with severe COVID-19 symptoms exhibited elevated serum FGF7 levels compared to those with mild ***,animal experiments indicated that SARS-CoV-2 infection increased pancreatic FGF7 levels,resulting in a reduction of insulin concentrations in *** together,our research offers a potential regulatory strategy for ACE2 by controlling FGF7,thereby protecting islets from SARS-CoV-2 infection and preventing the progression of diabetes in the context of COVID-19.

关键词： ACE2 FGF7 islet

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Traditional Chinese medicine for the treatment of immune-related nephropathy:A review

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Acta Pharmaceutica Sinica B 2024年第1期14卷 38-66页

作者： Pu Jiang Changliang Yao De-an Guo School of Pharmacy Nanjing University of Chinese MedicineNanjing 210023China Shanghai research center for Modernization of Traditional Chinese Medicine National Engineering Research Center of TCM Standardization TechnologyShanghai Institute of Materia MedicaChinese Academy of SciencesShanghai 201203China

Immune-related nephropathy(IRN)refers to immune-response-mediated glomerulonephritis and is the main cause of end-stage renal *** pathogenesis of IRN is not fully understood;therefore,treatment is *** Chinese medicines(TCMs)have potent clinical effects in the treatment of the IRN conditions immunoglobulin A nephropathy,lupus nephropathy,and diabetic *** underlying mechanisms mainly include its inhibition of inflammation;improvements to renal interstitial fibrosis,oxidative stress,autophagy,apoptosis;and regulation of *** this review,we summarize the clinical symptoms of the three IRN subtypes and the use of TCM prescriptions,herbs,and bioactive compounds in treating IRN,as well as the potential mechanisms,intending to provide a reference for the future study of TCM as IRN treatments.

关键词： IgA nephropathy Diabetic nephropathy Lupus nephritis Traditional Chinese medicine Immunity Pathogenesis Mechanism Pathophysiology

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