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Long-Range Electronic Effect-Promoted Ring-Opening Polymerization of Thioctic Acid to Produce Biomimetic Ionic Elastomers for Bioelectronics

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CCS Chemistry 2024年第3期6卷 761-773页

作者： Hongfei Huang Huijing Wang Lijie Sun Ruohan Zhang Luzhi Zhang ZekaiWu Yaxuan Zheng Yang Wang Wei Fu Youwei Zhang Rasoul Esmaeely Neisiany Zhengwei You State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringInstitute of Functional MaterialsDonghua UniversityResearch Base of Textile Materials for Flexible Electronics and Biomedical Applications(China Textile Engineering Society)Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative MedicineShanghai 201620 institute of Pediatric Translational medicine Shanghai Children’s Medical CenterSchool of MedicineShanghai Jiao Tong UniversityShanghai 200127 department of Materials and Polymer Engineering Faculty of EngineeringHakim Sabzevari UniversitySabzevar ***

Poly(disulfide)s have been widely used in flexible wearable electronics,smart materials,and drug *** synthesis of poly(disulfide)s usually utilizes external stimuli or toxic initiators to promote the ***,we indicated that the long-range electronic effect can significantly alter the reactivity of the disulfide ***,we established deprotonation-promoted ring-opening polymerization of thioctic acid(TA)as a highly effective and simple method to synthesize poly(disulfide)s due to the long-range electronic effect and nucleophilic *** external stimuli and initiators,simple mixing of TA and deprotonation reagent,choline bicarbonate,in different ratios at room temperature rapidly produced a series of high molecular weight(up to 772 kDa)ionic liquid crystal poly(disulfide)s elastomers with room temperature self-healing ability,adjustable conductivity(2.39×10^(−2)∼0.28×10^(−2)S m^(−1)),degradability,biocompatibility,antibacterial property,and tissue-like softness(Young’s moduli ranging from 18.2±6.0 to 111.1±36.7 kPa).The experiments and density functional theory calculations also revealed the principle of long-range electronic effect to establish a new synthetic strategy of poly(disulfide)s with superior properties favorable for bioelectronics.

关键词： self-healing elastomers thioctic acid ionic liquid bioelectronics

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Quorum Sensing:An Emerging Role for Vibrio Infection and Host Defense

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Infectious Microbes & Diseases 2024年第2期6卷 47-55页

作者： Hao-Nan Lin Xian-Hui Huang Xin-Jun Miao Wei-Lin Hu Yong-Liang Lou Dan-Li Xie The School of Laboratory medicine&Life Sciences Wenzhou Medical UniversityWenzhouChina Key Laboratory of Laboratory medicine Ministry of Education of ChinaWenzhouChina Wenzhou Key Laboratory of Sanitary Microbiology WenzhouChina department of Emergency Wenzhou Central HospitalWenzhouZhejiangChina department of Microbiology School of MedicineZhejiang UniversityHangzhouChina Zhuji institute of biomedical research School of PharmacyWenzhou Medical UniversityZhujiChina

Quorum sensing(QS)is a mechanism that allows bacteria to regulate various physiological and biochemical functions by secreting,sensing and responding to signaling molecules called autoinducers(AIs).In Vibrio species,QS plays a crucial role in modulating different biological *** can influence the formation of biofilms,which are communities of bacteria encased in a protective *** also controls flagella formation and motility,ensuring that Vibrio *** move efficiently in response to environmental ***ally,QS in Vibrio *** the production of different virulence factors based on cell *** enables the bacteria to adjust their virulence strategies accordingly,enhancing *** also influences the interaction between Vibrio *** their ***ing infection by Vibrio spp.,QS can affect the host immune response and colonization *** the role of QS in these interactions is crucial for unraveling the complex dynamics between Vibrio *** the *** summary,research on QS in Vibrio *** revealed its significance in regulating various biological phenotypes,controlling virulence factor production and affecting host de*** provides valuable insights into the intricate mechanisms underlying microbial behavior,host adaptation and Vibrio ***.

关键词： quorum sensing Vibrio species biological phenotype bacterial virulence host defense

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Dietary pyruvate targets cytosolic phospholipase A2 to mitigate inflammation and obesity in mice

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Protein & Cell 2024年第9期15卷 661-685页

作者： Sadaf Hasan Nabil Ghani Xiangli Zhao Julia Good Amanda Huang Hailey Lynn Wrona Jody Liu Chuan-ju Liu department of Orthopedic Surgery New York University Grossman School of MedicineNew YorkNY 10016United States department of medicine Division of Internal MedicineSaint Peter’s University HospitalRutgers UniversityNew BrunswickNJ 08901United States Cornell University IthacaNew YorkNYUnited States department of biomedical Engineering University of North Carolina Chapel HillChapel HillNC 27599United States New York University NY 14853United States department of Cell Biology New York University Grossman School of MedicineNew YorkNY 10016United States department of Orthopedics&Rehabilitation Yale University School of MedicineNew HavenCT 06510United States

Obesity has a multifactorial etiology and is known to be a state of chronic low-grade inflammation,known as *** state is associated with the development of metabolic disorders such as glucose intolerance and nonalcoholic fatty liver *** is a glycolytic metabolite and a crucial node in various metabolic ***,its role and molecular mechanism in obesity and associated complications are *** this study,we reported that pyruvate substantially inhibited adipogenic differentiation in vitro and its administration significantly prevented HFD-induced weight gain,white adipose tissue inflammation,and metabolic *** identify the target proteins of pyruvate,drug affinity responsive target stability was employed with proteomics,cellular thermal shift assay,and isothermal drug response to detect the interactions between pyruvate and its molecular ***,we identified cytosolic phospholipase A2(cPLA2)as a novel molecular target of pyruvate and demonstrated that pyruvate restrained diet-induced obesity,white adipose tissue inflammation,and hepatic steatosis in a cPLA2-dependent *** with global ablation of cPLA2 in mice showed that the protective effects of pyruvate were largely abrogated,confirming the importance of pyruvate/cPLA2 interaction in pyruvate attenuation of inflammation and ***,our study not only establishes pyruvate as an antagonist of cPLA2 signaling and a potential therapeutic option for obesity but it also sheds light on the mechanism of its ***’s prior clinical use indicates that it can be considered a safe and viable alternative for obesity,whether consumed as a dietary supplement or as part of a regular diet.

关键词： metabolic disease pyruvate cytosolic phospholipase obesity

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Enhancing immunotherapy efficacy against MHC-I deficient triple-negative breast cancer using LCL161-loaded macrophage membranedecorated nanoparticles

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Acta Pharmaceutica Sinica B 2024年第7期14卷 3218-3231页

作者： Wen Zhang Yihui Zhai Ying Cai Xiang Gong Yunxuan Jiang Rong Rong Chao Zheng Binyu Zhu Helen He Zhu Hao Wang Yaping Li Pengcheng Zhang China State institute of Pharmaceutical Industry Shanghai 201203China State Key Laboratory of Drug research&Center of Pharmaceutics Shanghai Institute of Materia MedicaChinese Academy of SciencesShanghai 201203China School of biomedical Engineering&State Key Laboratory of Advanced Medical Materials and Devices ShanghaiTech UniversityShanghai 201210China School of Chinese Materia Medica Nanjing University of Chinese MedicineNanjing 210023China Yantai institute of Materia Medica Shandong 264000China State Key Laboratory of Oncogenes and Related Genes Renji-Med-X Stem Cell Research CenterDepartment of UrologyRen Ji HospitalSchool of Medicine and School of Biomedical EngineeringShanghai Jiao Tong UniversityShanghai 200127China University of Chinese Academy of Sciences Beijing 100049China

Current cytotoxic T lymphocyte(CTL)activating immunotherapy requires a major histocompatibility complex I(MHC-I)-mediated presentation of tumor-associated antigens,which malfunctions in around half of patients with triple-negative breast cancer(TNBC).Here,we create a LCL161-loaded macrophage membrane decorated nanoparticle(LMN)for immunotherapy of MHC-I-deficient *** on the macrophage membrane helps LMNs recognize CD47-expressing cancer cells for targeted delivery of LCL161,which induces the release of high mobility group protein 1 and proinflammatory cytokines from cancer *** released cytokines and high mobility group protein 1 activate antitumor immunity by increasing the intratumoral density of the phagocytic macrophage subtype by 15 times and elevating the intratumoral concentration of CTL lymphotoxin by 4.6 *** also block CD47-mediated phagocytosis *** inhibit the growth of MHC-I-deficient TNBC tumors,as well as those resistant to combined therapy of anti-PDL1 antibody and albumin-bound paclitaxel,and prolong the survival of animals,during which process CTLs also play important *** macrophage membrane-decorated nanoparticle presents a generalizable platform for increasing macrophagemediated antitumor immunity for effective immunotherapy of MHC-I-deficient cancers.

关键词： MHC-I deficiency Macrophage CD47 Immunotherapy Triple-negative breast cancer Phagocytosis Immune checkpoint Innate immunity

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Docking protein 6 (DOK6) selectively docks the neurotrophic signaling transduction to restrain peripheral neuropathy

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Signal Transduction and Targeted Therapy 2024年第3期9卷 1147-1164页

作者： Yan Guo Pan Xiang Xiaojiao Sun Wei Liu Jiafeng Zhou Bin Yin Lin Hou Boqin Qiang Huiliang Li Pengcheng Shu Xiaozhong Peng department of Molecular Biology and Biochemistry Institute of Basic Medical SciencesMedical Primate Research CenterNeuroscience CenterChinese Academy of Medical SciencesSchool of Basic Medicine Peking Union Medical CollegeBeijingChina State Key Laboratory of Common Mechanism research for Major Diseases Beijing 100005China Wolfson institute for biomedical research University College LondonGower StreetLondon WC1E 6BTUK Chinese institute for Brain research Beijing 102206China State Key Laboratory of Respiratory Health and Multimorbidity Beijing 100005China institute of Laboratory Animal Science Chinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100021China

The appropriate and specific response of nerve cells to various external cues is essential for the establishment and maintenance of neural circuits,and this process requires the proper recruitment of adaptor molecules to selectively activate downstream ***,we identified that DOK6,a member of the Dok(downstream of tyrosine kinases)family,is required for the maintenance of peripheral axons,and that loss of Dok6 can cause typical peripheral neuropathy symptoms in mice,manifested as impaired sensory,abnormal posture,paw deformities,blocked nerve conduction,and ***,Dok6 is highly expressed in peripheral neurons but not in Schwann cells,and genetic deletion of Dok6 in peripheral neurons led to typical peripheral myelin outfolding,axon destruction,and hindered retrograde axonal ***,DOK6 acts as an adaptor protein for selectivitymediated neurotrophic signal transduction and retrograde transport for TrkC and Ret but not for TrkA and ***6 interacts with certain proteins in the trafficking machinery and controls their phosphorylation,including MAP1B,Tau and Dynein for axonal transport,and specifically activates the downstream ERK1/2 kinase pathway to maintain axonal survival and *** finding provides new clues to potential insights into the pathogenesis and treatment of hereditary peripheral neuropathies and other degenerative diseases.

关键词： impaired restrain peripheral

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Vitamin D-binding protein in plasma microglia-derived extracellular vesicles as a potential biomarker for major depressive disorder

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Genes & Diseases 2024年第2期11卷 1009-1021页

作者： Gaojia Zhang Ling Li Yan Kong Dandan Xu Yu Bao Zhiting Zhang Zhixiang Liao Jiao Jiao Dandan Fan Xiaojing Long Ji Dai Chunming Xie Zhiqiang Meng Zhijun Zhang department of Neurology Affiliated Zhongda HospitalResearch Institution of NeuropsychiatrySchool of MedicineSoutheast UniversityNanjingJiangsu 210009China department of Biochemistry and Molecular Biology School of MedicineSoutheast UniversityNanjingJiangsu 210009China Shenzhen Key Laboratory of Drug Addiction Brain Cognition and Brain Disease InstituteShenzhen Institute of Advanced TechnologyChinese Academy of Sciences (CAS)ShenzhenGuangdong 518000China CAS Key Laboratory of Brain Connectome and Manipulation The Brain Cognition and Brain Disease Institute (BCBDI)Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong 518055China Lauterbur research Center for biomedical Imaging Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong 518055China Shenzhen-Hong Kong institute of Brain Sciences-Shenzhen Fundamental research Institutions ShenzhenGuangdong 518000China Brain Cognition and Brain Disease institute Department of Mental Health and Public HealthFaculty of Life and Health SciencesShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong 518055China

No well-established biomarkers are available for the clinical diagnosis of major depressive disorder(MDD).Vitamin D-binding protein(VDBP)is altered in plasma and postmortem dorsolateral prefrontal cortex(DLPFC)tissues of MDD ***,the role of VDBP as a potential biomarker of MDD diagnosis was further *** extracellular vesicles(EVs)and brain cell-derived EVs(BCDEVs)were isolated from the plasma of first-episode drug-naïve or drug-free MDD patients and well-matched healthy controls(HCs)in discovery(20 MDD patients and 20 HCs)and validation cohorts(88 MDD patients and 38 HCs).VDBP level in the cerebrospinal fluid(CSF)from chronic glucocorticoid-induced depressed rhesus macaques or prelimbic cortex from lipopolysaccharide(LPS)-induced depressed mice and wild control groups was measured to evaluate its relationship with VDBP in plasma microglia-derived extracellular vesicles(MDEVs).VDBP was significantly decreased in MDD plasma MDEVs compared to HCs,and negatively correlated with HAMD-24 score with the highest diagnostic accuracy among *** in plasma MDEVs was decreased both in depressed rhesus macaques and mice.A positive correlation of VDBP in MDEVs with that in CSF was detected in depressed rhesus *** levels in prelimbic cortex microglia were negatively correlated with those in plasma MDEVs in depressed *** main results suggested that VDBP in plasma MDEVs might serve as a prospective candidate biomarker for MDD diagnosis.

关键词： Biomarker Cerebrospinal fluid Major depressive disorder Microglia derived extracellular vesicles Vitamin-D binding protein

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RUFY4 deletion prevents pathological bone loss by blocking endo-lysosomal trafficking of osteoclasts

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Bone research 2024年第2期12卷 407-420页

作者： Minhee Kim Jin Hee Park Miyeon Go Nawon Lee Jeongin Seo Hana Lee Doyong Kim Hyunil Ha Taesoo Kim Myeong Seon Jeong Suree Kim Taesoo Kim Han Sung Kim Dongmin Kang Hyunbo Shim Soo Young Lee department of Life Science Ewha Womans UniversitySeoul 03760South Korea The research Center for Cellular Homeostasis Ewha Womans UniversitySeoul 03760South Korea department of biomedical Engineering Yonsei UniversityWonju 26493South Korea KM Convergence research Division Korea Institute of Oriental MedicineDaejeon 34054South Korea Chuncheon Center Korea Basic Science InstituteChuncheon 24341South Korea Fluorescence Core Imaging Center and Bioimaging Data Curation Center Ewha Womans UniversitySeoul 03760South Korea Multitasking Macrophage research Center Ewha Womans UniversitySeoul 03760South Korea

Mature osteoclasts degrade bone matrix by exocytosis of active proteases from secretory lysosomes through a ruffled ***,the molecular mechanisms underlying lysosomal trafficking and secretion in osteoclasts remain largely ***,we show with GeneChip analysis that RUN and FYVE domain-containing protein 4(RUFY4)is strongly upregulated during *** lacking Rufy4 exhibited a high trabecular bone mass phenotype with abnormalities in osteoclast function in ***,deleting Rufy4 did not affect osteoclast differentiation,but inhibited bone-resorbing activity due to disruption in the acidic maturation of secondary lysosomes,their trafficking to the membrane,and their secretion of cathepsin K into the extracellular ***,RUFY4 promotes late endosome-lysosome fusion by acting as an adaptor protein between Rab7 on late endosomes and LAMP2 on primary ***,Rufy4-deficient mice were highly protected from lipopolysaccharide-and ovariectomy-induced bone ***,RUFY4 plays as a new regulator in osteoclast activity by mediating endo-lysosomal trafficking and have a potential to be specific target for therapies against bone-loss diseases such as osteoporosis.

关键词： osteoclast inhibited traffic

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Glial progenitor heterogeneity and plasticity in the adult spinal cord

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Neural Regeneration research 2024年第12期19卷 2567-2568页

作者： Haichao Wei Jia Qian Wu department of Neurosurgery McGovern Medical SchoolThe University of Texas Health Science Center at HoustonHoustonTXUSA Center for Stem Cell and Regenerative medicine UT Brown Foundation Institute of Molecular MedicineHoustonTXUSA MD Anderson Cancer Center UTHealth Graduate School of biomedical Sciences HoustonTXUSA

Glial progenitor cells were reported to have the capacity to generate various types of cells in both the central nervous system(CNS)and peripheral nervous *** progenitor cells can respond to diverse environmental signals and transform into distinct populations,each serving specific ***,the adult spinal cord hosts various populations of glial progenitors,a region integral to the central nervous *** development,glial progenitors express glial fibrillary acidic protein(GFAP;Dimou and Gotz,2014).However,the specific identities of GFAP-expressing progenitors in the adult spinal cord were not thoroughly investigated.

关键词： functions plasticity thoroughly

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In vivo and in vitro study of resorbable magnesium wires for medical implants:Mg purity,surface quality,Zn alloying and polymer coating

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Journal of Magnesium and Alloys 2024年第6期12卷 2472-2488页

作者： K.Tesar J.Luňácková M.Jex M.Žaloudková R.Vrbová M.Bartoš P.Klein L.Vištejnová J.Dušková E.Filová Z.Sucharda M.Steinerová S.Habr K.Balík A.Singh department of Materials Faculty of Nuclear Sciences and Physical EngineeringCzech Technical University in PragueTrojanova 13Prague 12000Czech Republic institute of Physics Czech Academy of SciencesNa Slovance 2Prague 18221Czech Republic institute of Dental medicine First Faculty of MedicineCharles University and General University Hospital in PragueKaterinská32Prague 12801Czech Republic department of Physics Faculty of Nuclear Sciences and Physical EngineeringCzech Technical University in PragueBrehová7Prague 11519Czech Republic department of Composites and Carbon Materials Institute of Rock Structure and MechanicsCzech Academy of SciencesV Holešovickách 41Prague 18209Czech Republic institute of Anatomy First Faculty of MedicineCharles UniversityU Nemocnice 3Prague 12800Czech Republic biomedical Center Faculty of Medicine in PilsenCharles UniversityAlej Svobody 76Pilsen 32300Czech Republic department of Pathological Physiology Faculty of Medicine in PilsenCharles UniversityAlej Svobody 7632300 PilsenCzech Republic department of Histology and Embryology Faculty of Medicine in PilsenCharles UniversityAlej Svobody 7632300 PilsenCzech Republic institute of Pathology First Faculty of MedicineCharles University and General University Hospital in PragueStudnickova 2Prague 12800Czech Republic department of Biomaterials and Tissue Engineering Institute of PhysiologyCzech Academy of SciencesVidenska 1083Prague 14200Czech Republic research Center for Structural Materials National Institute for Materials Science1-2-1 SengenTsukuba 305-0047Japan

Magnesium is an excellent material in terms of biocompatibility and its corrosion products can serve as an active source for new bone ***,localized corrosion and H_(2)generation limit the potential of Mg-based *** low-alloyed Mg-Zn wires can strongly reduce problems with large H_(2)bubbles and improve the mechanical properties considerably while maintaining excellent long-term *** pickling and a polymer coating can be effectively used to lower the rate of in vivo *** this work,microstructural,mechanical,and in vitro characterization of 250μm and 300μm extruded wires made from ultra-pure Mg,commercially pure Mg,Mg-0.15Zn,Mg-0.4Zn and Mg-1Zn was ***,Mg-0.4Zn wires together with a variant coated with a copolymer of L-lactide andε-caprolactone were tested in vivo on artificially damaged Wistar rat *** on the observed Mg-induced osteogenesis,polymer-coated Mg wires with a small addition of Zn are a perspective material for bone-support applications,such as cerclage and fixation wires.

关键词： Magnesium Resorbable Mg wire Mg-Zn implant degradation Biocompatibility study Zn grain boundary segregation

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Interindividual Age-Independent Differences in Human CX43 Impact Ventricular Arrhythmic Risk

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research 2024年第3期6卷 417-432页

作者： Laura García-Mendívil María Pérez-Zabalza Antoni Oliver-Gelabert JoséMaría Vallejo-Gil Javier Fañanás-Mastral Manuel Vázquez-Sancho Javier AndréBellido-Morales Alexánder Sebastián Vaca-Núñez Carlos Ballester-Cuenca Emiliano Diez Laura Ordovás Esther Pueyo biomedical Signal Interpretation and Computational Simulation group(BSICoS) Aragón Institute of Engineering ResearchUniversity of ZaragozaZaragoza 50018Spain BSICoS Instituto de Investigación Sanitaria Aragón(IISA)Zaragoza 50018Spain Centro Universitario de la Defensa(CUD) Zaragoza 50090Spain. department of Cardiovascular Surgery University Hospital Miguel ServetZaragoza 50009Spain. institute of Experimental medicine and Biology of Cuyo(IMBECU) CONICETMendoza 5500Argentina. Fundación Agencia Aragonesa para la Investigación y el Desarrollo(ARAID) Zaragoza 50018Spain. biomedical research Networking Center in Bioengineering Biomaterials and Nanomedicine(CIBER-BBN)Zaragoza 50018Spain.

Connexin 43 (CX43) is one of the major components of gap junctions, the structures responsible for the intercellular communication and transmission of the electrical impulse in the left ventricle. There is limited information on the histological changes of CX43 with age and their effect on electrophysiology, especially in humans. Here, we analyzed left ventricular biopsies from living donors starting at midlife to characterize age-related CX43 remodeling. We assessed its quantity, degree of lateralization, and spatial heterogeneity together with fibrotic deposition. We observed no significant age-related remodeling of CX43. Only spatial heterogeneity increased slightly with age, and this increase was better explained by biological age than by chronological age. Importantly, we found that CX43 features varied considerably among individuals in our population with no relevant relationship to age or fibrosis content, in contrast to animal species. We used our experimental results to feed computational models of human ventricular electrophysiology and to assess the effects of interindividual differences in specific features of CX43 and fibrosis on conduction velocity, action potential duration, and arrhythmogenicity. We found that larger amounts of fibrosis were associated with the highest arrhythmic risk, with this risk being increased when fibrosis deposition was combined with a reduction in CX43 amount and/or with an increase in CX43 spatial heterogeneity. These mechanisms underlying high arrhythmic risk in some individuals were not associated with age in our study population. In conclusion, our data rule out CX43 remodeling as an age-related arrhythmic substrate in the population beyond midlife, but highlight its potential as a proarrhythmic factor at the individual level, especially when combined with increased fibrosis.

关键词： CX43 rhythm Independent

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