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TREM-1 mediates interaction between substantia nigra microglia and peripheral neutrophils

Neural Regeneration Research 2024年第6期19卷 1375-1384页

作者： Tong Shen Guiyun Cui Hao Chen Long Huang Wei Song Jie Zu Wei Zhang Chuanying Xu Liguo Dong Yongmei Zhang jiangsu province key laboratory of Anesthesiology Xuzhou Medical University jiangsu province key laboratory of Anesthesia and Analgesia Application Technology Xuzhou Medical University NMPA key laboratory for Research and Evaluation of Narcotic and Psychotropic Drugs Department of Neurology The Affiliated Hospital of Xuzhou Medical University

Microglia-mediated neuroinflammation is considered a pathological feature of Parkinson’s disease. Triggering receptor expressed on myeloid cell-1(TREM-1) can amplify the inherent immune response, and crucially, regulate inflammation. In this study, we found marked elevation of serum soluble TREM-1 in patients with Parkinson’s disease that positively correlated with Parkinson’s disease severity and dyskinesia. In a mouse model of 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine-induced Parkinson’s disease, we found that microglial TREM-1 expression also increased in the substantia nigra. Further, TREM-1 knockout alleviated dyskinesia in a mouse model of Parkinson’s disease and reduced dopaminergic neuronal injury. Meanwhile, TREM-1 knockout attenuated the neuroinflammatory response, dopaminergic neuronal injury, and neutrophil migration. Next, we established an in vitro 1-methyl-4-phenyl-pyridine-induced BV2 microglia model of Parkinson’s disease and treated the cells with the TREM-1 inhibitory peptide LP17. We found that LP17 treatment reduced apoptosis of dopaminergic neurons and neutrophil migration. Moreover, inhibition of neutrophil TREM-1 activation diminished dopaminergic neuronal apoptosis induced by lipopolysaccharide. TREM-1 can activate the downstream CARD9/NF-κB proinflammatory pathway via interaction with SYK. These findings suggest that TREM-1 may play a key role in mediating the damage to dopaminergic neurons in Parkinson’s disease by regulating the interaction between microglia and peripheral neutrophils.

关键词： 1-methyl-4-phenylpyridiniumion dopaminergic neurons infiltration 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine microglia neutrophils neuroinflammation Parkinson's disease SYK TREM-1

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Dopamine in the prefrontal cortex plays multiple roles in the executive function of patients with Parkinson's disease

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Neural Regeneration Research 2024年第8期19卷 1759-1767页

作者： Zihang Zhou Yalong Yan Heng Gu Ruiao Sun Zihan Liao Ke Xue Chuanxi Tang Department of Neurobiology Xuzhou Key Laboratory of NeurobiologyXuzhou Medical UniversityXuzhouJiangsu ProvinceChina

Parkinson’s disease can affect not only motor functions but also cognitive abilities,leading to cognitive *** common issue in Parkinson’s disease with cognitive dysfunction is the difficulty in executive *** functions help us plan,organize,and control our actions based on our *** brain area responsible for executive functions is called the prefrontal co *** acts as the command center for the brain,especially when it comes to regulating executive *** role of the prefrontal cortex in cognitive processes is influenced by a chemical messenger called ***,little is known about how dopamine affects the cognitive functions of patients with Parkinson’s *** this article,the authors review the latest research on this *** start by looking at how the dopaminergic syste m,is alte red in Parkinson’s disease with executive ***,they explore how these changes in dopamine impact the synaptic structure,electrical activity,and connection components of the prefrontal *** authors also summarize the relationship between Parkinson’s disease and dopamine-related cognitive *** information may offer valuable insights and directions for further research and improvement in the clinical treatment of cognitive impairment in Parkinson’s disease.

关键词： dopamine dopamine receptor dopamine transporter executive dysfunction neural network neural oscillation prefrontal cortex synaptic plasticity

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Gut microbiota dysbiosis contributes toα-synuclein-related pathology associated with C/EBPβ/AEP signaling activation in a mouse model of Parkinson’s disease

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Neural Regeneration Research 2024年第9期19卷 2081-2088页

作者： Xiaoli Fang Sha Liu Bilal Muhammad Mingxuan Zheng Xing Ge Yan Xu Shu Kan Yang Zhang Yinghua Yu Kuiyang Zheng Deqin Geng Chun-Feng Liu Department of Neurology and Clinical Research Center of Neurological Disease The Second Affiliated Hospital of Soochow UniversitySuzhouJiangsu ProvinceChina Department of Neurology Affiliated Hospital of Xuzhou Medical UniversityXuzhouJiangsu ProvinceChina jiangsu key laboratory of Immunity and Metabolism Department of Pathogen Biology and ImmunologyXuzhou Medical UniversityXuzhouJiangsu ProvinceChina Department of Neurology Xuzhou Central HospitalXuzhouJiangsu ProvinceChina jiangsu key laboratory of Neuropsychiatric Disease and Institute of Neuroscience Soochow UniversitySuzhouJiangsu ProvinceChina

Parkinson’s disease is a neurodegenerative disease characterized by motor and gastrointestinal *** dysfunction can precede the onset of motor symptoms by several *** microbiota dysbiosis is involved in the pathogenesis of Parkinson’s disease,whether it plays a causal role in motor dysfunction,and the mechanism underlying this potential effect,remain ***/enhancer binding proteinβ/asparagine endopeptidase(C/EBPβ/AEP)signaling,activated by bacterial endotoxin,can promoteα-synuclein transcription,thereby contributing to Parkinson’s disease *** this study,we aimed to investigate the role of the gut microbiota in C/EBPβ/AEP signaling,α-synuclein-related pathology,and motor symptoms using a rotenone-induced mouse model of Parkinson’s disease combined with antibiotic-induced microbiome depletion and fecal microbiota *** found that rotenone administration resulted in gut microbiota dysbiosis and perturbation of the intestinal barrier,as well as activation of the C/EBP/AEP pathway,α-synuclein aggregation,and tyrosine hydroxylase-positive neuron loss in the substantia nigra in mice with motor ***,treatment with rotenone did not have any of these adverse effects in mice whose gut microbiota was depleted by pretreatment with ***,we found that transplanting gut microbiota derived from mice treated with rotenone induced motor deficits,intestinal inflammation,and *** of fecal microbiota from healthy control mice alleviated rotenone-induced motor deficits,intestinal inflammation,endotoxemia,and intestinal barrier *** results highlight the vital role that gut microbiota dysbiosis plays in inducing motor deficits,C/EBPβ/AEP signaling activation,andα-synuclein-related pathology in a rotenone-induced mouse model of Parkinson’s ***,our findings suggest that supplementing with healthy microbiota may be a safe and effective treatment that c

关键词： C/EBP/AEP signaling pathway endotoxemia fecal microbiota transplantation intestinal barrier intestinal inflammation microbiota-gut-brain axis Parkinson’s disease

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The combined application of stem cells and three-dimensional bioprinting scaffolds for the repair of spinal cord injury

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Neural Regeneration Research 2024年第8期19卷 1751-1758页

作者： Dingyue Ju Chuanming Dong Department of Anatomy Medical College of Nantong UniversityNantongJiangsu ProvinceChina key laboratory of Neuroregeneration of jiangsu and Ministry of Education Co-innovation Center of NeuroregenerationNantong UniversityNantongJiangsu ProvinceChina

Spinal cord injury is considered one of the most difficult injuries to repair and has one of the worst prognoses for injuries to the nervous *** surgery,the poor regenerative capacity of nerve cells and the generation of new scars can make it very difficult for the impaired nervous system to restore its neural *** treatments can only alleviate secondary injuries but cannot fundamentally repair the spinal ***,there is a critical need to develop new treatments to promote functional repair after spinal cord *** recent years,there have been seve ral developments in the use of stem cell therapy for the treatment of spinal cord *** significant developments in the field of tissue engineering,three-dimensional bioprinting technology has become a hot research topic due to its ability to accurately print complex *** led to the loading of three-dimensional bioprinting scaffolds which provided precise cell *** three-dimensional bioprinting scaffolds co uld repair damaged neural circuits and had the potential to repair the damaged spinal *** this review,we discuss the mechanisms underlying simple stem cell therapy,the application of different types of stem cells for the treatment of spinal cord injury,and the different manufa cturing methods for three-dimensional bioprinting *** particular,we focus on the development of three-dimensional bioprinting scaffolds for the treatment of spinal cord injury.

关键词： biomaterials embryonic stem cells induced pluripotent stem cells mesenchymal stem cells nerve regeneration spinal cord injury stem cell therapy stem cells three-dimensional bioprinting

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Role of transforming growth factor-βin peripheral nerve regeneration

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Neural Regeneration Research 2024年第2期19卷 380-386页

作者： Zihan Ding Maorong Jiang Jiaxi Qian Dandan Gu Huiyuan Bai Min Cai Dengbing Yao School of Life Sciences Key Laboratory of Neuroregeneration of Jiangsu and Ministry of EducationCo-innovation Center of NeuroregenerationNantong UniversityNantongJiangsu ProvinceChina Medical School of Nantong University NantongJiangsu ProvinceChina

Injuries caused by trauma and neurodegenerative diseases can damage the peripheral nervous system and cause functional *** in the central nervous system,damaged axons in peripheral nerves can be induced to regenerate in response to intrinsic cues after reprogramming or in a growth-promoting microenvironment created by Schwann ***,axon regeneration and repair do not automatically result in the restoration of function,which is the ultimate therapeutic goal but also a major clinical *** growth factor(TGF)is a multifunctional cytokine that regulates various biological processes including tissue repair,embryo development,and cell growth and *** is accumulating evidence that TGF-βfamily proteins participate in peripheral nerve repair through various factors and signaling pathways by regulating the growth and transformation of Schwann cells;recruiting specific immune cells;controlling the permeability of the blood-nerve barrier,thereby stimulating axon growth;and inhibiting remyelination of regenerated ***-βhas been applied to the treatment of peripheral nerve injury in animal *** this context,we review the functions of TGF-βin peripheral nerve regeneration and potential clinical applications.

关键词： myelination nerve repair and regeneration neurite neuroinflammation peripheral nerve injury Schwann cell transforming growth factor-β Wallerian degeneration

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Photocatalytic activation of sulfite by N-doped porous biochar/MnFe_(2)O_(4) interface-driven catalyst for efficient degradation of tetracycline

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Green Energy & Environment 2024年第3期9卷 481-494页

作者： Long Cheng Yuanhui Ji jiangsu province Hi-Tech key laboratory for Biomedical Research School of Chemistry and Chemical EngineeringSoutheast UniversityNanjing211189China

A novel photo-catalytic system composed of N-doped biochars(NBCs),MnFe_(2)O_(4) and sulfite activation under ultraviolet(NBCs/MnFe_(2)O_(4)/sulfite/UV)was constructed to realize the efficient eliminate of tetracycline(TC).As the carrier of MnFe_(2)O_(4),NBCs were synthesized from alfalfa,which has large specific surface area,graphite like structure and hierarchical porous *** adsorption isotherm indicated that NBCs/MnFe_(2)O_(4)-2:1 had the best adsorption performance for TC(347.56 mg g^(-1)).Through synergistic adsorption and photocatalysis,the removal rate of TC reached 84%,which was significantly higher than that of MnFe_(2)O_(4).Electrochemical impedance spectroscopy(EIS)and Photoluminescence(PL)characterization results showed that the introduction of NBCs improved the separation efficiency of photogenerated electron and hole pairs and enhanced the photocatalytic ***,the adsorption,degradation mechanism and degradation path of TC by the catalyst were systematically analyzed by coupling HPLC–MS measurement with the theoretical *** the advantages of excellent degradation performance,low cost,easy separation and environmental friendliness of NBCs/MnFe_(2)O_(4),this work was expected to provide a new path for the practical application of biochar.

关键词： Biochar MnFe_(2)O_(4) Sulfite Adsorption Photocatalysis

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Targeting Haemaphysalis longicornis serpin to prevent tick feeding and pathogen transmission

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Insect Science 2024年第3期31卷 694-706页

作者： Tingting Feng Hao Tong Qianqian Zhang Zhihao Ming Zhenyu Song Xia Zhou Jianfeng Dai Institute of Biology and Medical Sciences Jiangsu Key Laboratory of Infection and ImmunitySoochow UniversitySuzhouJiangsu ProvinceChina School of Biology and Basic Medical Science Suzhou Medical College of Soochow UniversitySuzhouJiangsu ProvinceChina

Serine proteinase inhibitors(serpins),identified from the hard tick Haemaphysalis longicornis of China,play significant roles in various animal physiological *** this study,we showed that *** serpins(Hlserpin-a and Hlserpin-b)were induced during blood-feeding in nymph ticks and exhibited anticoagulation activity in *** Hlserpins through RNA interference(RNAi)significantly impaired tick *** of mice with recombinant Hlserpins or passive transfer of Hlserpin antiserum significantly curtails the efficacy of tick ***,the transmission of the Langat virus(LGTV)from ticks to mice witnessed a substantial decrease when Hlserpins were *** findings suggest that inhibiting Hlserpins can hamper tick engorgement and pathogen transmission,indicating the potential of Hlserpins as a vaccine to countertick-borne diseases.

关键词： feeding LGTV serpin TBEV tick

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Immune functions of C-type lectins in medical arthropods

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Insect Science 2024年第3期31卷 652-662页

作者： Zhihao Ming Zhiqiang Chen Hao Tong Xia Zhou Tingting Feng Jianfeng Dai Institute of Biology and Medical Sciences Jiangsu Key Laboratory of Infection and ImmunitySoochow UniversitySuzhouJiangsu ProvinceChina School of Biology and Basic Medical Science Suzhou Medical College of Soochow UniversitySuzhouJiangsu ProvinceChina

C-type lectins(CTLs)are a family of proteins that contain 1 or more carbohydrate-recognition domains(CRDs)and bind to a broad repertoire of ligands in the presence of calcium *** play important roles in innate immune defenses against microorganisms by acting as pattern-recognition receptors(PRRs)for invading pathogens,such as bacteria,viruses,and *** binding to pathogen-associated ligands,CTLs mediate immune responses,such as agglutination,phagocytosis,and the activation of phenol oxidase progenitors,thereby clearing *** are an evolutionarily conserved family found in almost all vertebrates and *** arthropods can acquire and transmit a range pathogens through various approaches,such as bloodsucking,lancing,and parasitism,thus infecting humans and animals with related diseases,some of which can be *** studies have shown that lectins are important components of the arthropod immune system and are essential for the immune responses of arthropods to arthropod-borne *** article reviews the current understanding of the structure,function,and signaling pathways involved in CTLs derived from important medical arthropods.

关键词： arthropod C-type lectin innate immunity vector-borne disease

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RNA sequencing of exosomes secreted by fibroblast and Schwann cells elucidates mechanisms underlying peripheral nerve regeneration

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Neural Regeneration Research 2024年第8期19卷 1812-1821页

作者： Xinyang Zhou Yehua Lv Huimin Xie Yan Li Chang Liu Mengru Zheng Ronghua Wu Songlin Zhou Xiaosong Gu Jingjing Li Daguo Mi Suzhou Medical College of Soochow University SuzhouJiangsu ProvinceChina key laboratory of Neuroregeneration of jiangsu and Ministry of Education Co-Innovation Center of NeuroregenerationNantong UniversityNantongJiangsu ProvinceChina Department of Orthopedic Nantong Traditional Chinese Medicine HospitalNantongJiangsu ProvinceChina Nantong Stomatological Hospital Affiliated to Nantong University NantongJiangsu ProvinceChina Department of General Practice Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina

Exosomes exhibit complex biological functions and mediate a variety of biological processes,such as promoting axonal regeneration and functional recove ry after *** non-coding RNAs(IncRNAs)have been reported to play a crucial role in axonal *** r,the role of the IncRNA-microRNAmessenger RNA(mRNA)-competitive endogenous RNA(ceRNA)network in exosome-mediated axonal regeneration remains *** this study,we performed RNA transcriptome sequencing analysis to assess mRNA expression patterns in exosomes produced by cultured fibroblasts(FC-EXOs)and Schwann cells(SCEXOs).Diffe rential gene expression analysis,Gene Ontology analysis,Kyoto Encyclopedia of Genes and Genomes analysis,and protein-protein intera ction network analysis were used to explo re the functions and related pathways of RNAs isolated from FC-EXOs and *** found that the ribosome-related central gene Rps5 was enriched in FC-EXOs and SC-EXOs,which suggests that it may promote axonal *** addition,using the miRWalk and Starbase prediction databases,we constructed a regulatory network of ceRNAs targeting Rps5,including 27 microRNAs and five *** ceRNA regulatory network,which included Ftx and Miat,revealed that exsosome-derived Rps5 inhibits scar formation and promotes axonal regeneration and functional recovery after nerve *** findings suggest that exosomes derived from fibro blast and Schwann cells could be used to treat injuries of peripheral nervous system.

关键词： ceRNA network exosomes fibroblast cells Gene Ontology(GO) Kyoto Encyclopedia of Genes and Genomes(KEGG) protein-protein interaction(PPI)networks RNA-seq Schwann cells

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Cycloaddition Reactions of Epoxides and CO_(2)Catalyzed by Bifunctional Rare-Earth Metal Complexes Bearing Amino-Bridged Tris(phenolato)Ligands

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Chinese Journal of Chemistry 2024年第14期42卷 1571-1581页

作者： Yongjie Chen Yanwei Wang Jun Nong Dan Yuan Yingming Yao key laboratory of Organic Synthesis of jiangsu province College of ChemistryChemical Engineering and Materials ScienceDushu Lake CampusSoochow UniversitySuzhouJiangsu215123 China

Eight zwitterionic rare earth metal complexes stabilized by amino-bridged tris(phenolato)ligands bearing quaternary ammonium side-arms were synthesized and *** complexes were used as single-component catalysts for the cycloaddition of CO_(2)and epoxides,and their catalytic activities are obviously higher than those of their binary *** studies revealed that the halide anions(Cl^(–),Br^(–),I^(–))and the metal complexes influenced the catalytic activity,and the lanthanum complex bearing iodide anion showed the highest catalytic activity for this addition reaction.A variety of mono-substituted epoxides were converted to cyclic carbonates in good to excellent yields(55%—99%)with high selectivity(>99%)at 30℃and 1 bar CO_(2),whereas internal epoxides required higher both reaction temperatures(60—120℃)and catalyst loading(2 mol%)for high *** catalyst was recyclable for four times without noticeable loss of catalytic *** on the results of kinetic studies and in℃situ IR reactions,a plausible reaction mechanism was proposed.

关键词： Bifunctional catalyst Carbon dioxide Cyclic carbonate Rare-earth metal Tris(phenolato)ligand Insertion Cycloaddition C1 building blocks

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