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Agmatine increases proliferation of cultured hippocampal progenitor cells and hippocampal neurogenesis in chronically stressed mice

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Acta Pharmacologica Sinica 2006年第11期27卷 1395-1400页

作者： Yun-feng LI~2 Hong-xia chen ying LIU You-zhi ZHANG Yan-qin LIU Jin LI Beijing Institute of Pharmacology and Toxicology,Beijing 100850,China Beijing Institute of Pharmacology and Toxicology Beijing China

Aim:To explore the mechanism of agmatine’s antidepressant ***:Male mice were subjected to a variety of unpredictable stressors on a daily basisover a 24-d *** open-field behaviors of the mice were displayed andrecorded using a Videomex-V image analytic system *** bromodeo-xyuridine(BrdU;thymidine analog as a marker for dividing cells)labeling,the micewere injected with BrdU(100 mg/kg,ip,twice per d for 2 d),and the hippocampalneurogenesis in stressed mice was measured by *** of cultured hippocampal progenitor cells from neonatal rats wasdetermined by colorimetric assay(cell counting kit-8)and ~3H-thymidine incorpo-ration ***:After the onset of chronic stress,the locomotor activity ofthe mice in the open field significantly decreased,while coadministration of agma-tine 10 mg/kg(po)blocked ***,the number of BrdU-labeled cells in thehippocampal dentate gyrus significantly decreased in chronically stressed mice,which was also blocked by chronic coadministration with agmatine 10 mg/kg(po).Four weeks after the BrdU injection,some of the new born cells matured andbecame neurons,as determined by double labeling for BrdU and neuron specificenolase(NSE),a marker for mature *** vitro treatment with agmatine 0.1-10 μmol/L for 3 d significantly increased the proliferation of the cultured hippoc-ampal progenitor cells in a dose-dependent ***:We have foundthat agmatine increases proliferation of hippocampal progenitor cells in vitro andthe hippocampal neurogenesis in vivo in chronically stressed mice,This may beone of the important mechanisms involved in agmatine’s antidepressant action.

关键词： Agmatine antidepressant neurogenesis chronic stress hippocampus progenitor cells

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Overexpression of MiR-633 Suppresses the Tumorigenicity of Gastric Cancer Cells and Induces Apoptosis by Targeting MAPK1

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Current Medical Science 2022年第5期42卷 1033-1045页

作者： Hai-long LI Yao-hui SONG Zheng-ping DU Yong-hua HU Zhuan-xiong WANG Xi chen Xing-mei LU ying-xia chen Yong-qiang DUAN xiang-dong ZHU Department of Geriatrics Affiliated Hospital of Gansu University of Traditional Chinese MedicineLanzhou730000China Department of Internal Medicine The First Clinical Medical CollegeGansu University of Chinese MedicineLanzhou730000China Provincial-Level Key Laboratory for Molecular Medicine of Major Diseases and The Prevention and Treatment with Traditional Chinese Medicine in Gansu Colleges and Universities Gansu University of Chinese MedicineLanzhou730000China School of Basic Medicine Gansu Vocational College of HealthLanzhou730300China College of Traditional Chinese Medicine Ningxia Medical UniversityYinchuan750004China

Objective MicroRNA(miRNA/miR)-633 is dysregulated in several types of cancers and is involved in ***,the function and role of this miRNA in gastric cancer(GC)are not fully *** aim of the present study was to evaluate miR-633 expression in GC cell lines and in GC tissue *** normal tissue,and to determine its association with clinicopathological *** work was extended to investigate the effects of miR-633 overexpression on tumor cells in *** Reverse transcription-quantitative PCR(RT-qPCR)was used to detect and compare the expression level of miR-633 in GC cells,as well as in GC and normal adjacent tissue *** clinical significance of miR-633 was also ***-633 lentivirus(LV-miR-633)and negative control lentivirus(LV-NC)were generated and used to transduce SGC-7901 and HGC-27 GC cells in order to analyze the effect of miR-633 on their *** effects of miR-633 overexpression on GC cell proliferation,apoptosis,migration and invasion were *** target gene of miR-633 was predicted,then confirmed using a dual luciferase reporter gene assay,RT-qPCR and Western *** MiR-633 was significantly downregulated in GC cell lines,as well as in GC tissue compared with adjacent normal ***,miR-633 expression was associated with the tumor/node/metastasis(TNM)stage,invasion depth,Borrmann classification and lymph node metastasis(P<0.05).Compared with the LV-NC group,transduction with LV-miR-633 reduced the proliferation,the number of clones,the wound healing rate,the number of invading cells and the number of cells in the G1 phase of the cell cycle(P<0.01).LV-miR-633 also increased the apoptosis rate(P<0.01).The expression level of mitogen-activated protein kinase(MAPK)1,high-mobility group box 3(HMGB3),claudin 1(CLDN1)and MAPK13 were downregulated in LV-miR-633-transduced cells(P<0.01).The dual luciferase reporter assay confirmed that the 3′-untranslated region of MAPK1 was the t

关键词： miR-633 gastric cancer apoptosis metastasis mitogen-activated protein kinase 1

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Environmental Characteristics of Groundwater:an Application of PCA to Water Chemistry Analysis in Yulin

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Journal of China University of Mining and Technology 2007年第1期17卷 73-77页

作者： DONG Dong-lin WU Qiang ZHANG Rui SONG ying-xia chen Shu-ke LI Pei LIU Shou-qiang BI Cen-cen LV Zhen-qi HUANG Song-lin State Key Lab of Coal Resources and Safe Mining China University of Mining ＆ Technology Beijing 100083 China

For our investigation into the water quality in Yulin city, we collected 76 typical water samples to be tested for particle quality. By applying a Romani type classification method the groundwater of Yulin city was classified into nine categories by type, i.e., Ca-HCO3, Na-HCO3, Na-HCO3-SO4-Cl, Na-HCO3-SO4, Na-Cl, Na-Cl-HCO3, Na-Ca- HCO3, Ca-Cl-HCO3 and Ca-HCO3-SO4-Cl. A principal component analysis was carried out in order to analyze the groundwater environment. From this analysis we considered that the information collected could be represented by 21 indices from which we extracted seven principal components, which, respectively, accounted for 37.4%, 13.0%, 8.1%, 7.2%, 6.3%, 5.9% and 4.6% of the total variation. The results show that the groundwater environment of this region is largely determined by characteristic components of the natural groundwater background. One part of the water was polluted by leaching/eluviation of solid waste generated from coal mining. Another part of the ground water was contaminated by acid mine water from the coal layer and from improper irrigation. In addition, geological and hydrogeological conditions also cause changes in the water environment.

关键词： water environment principal component analysis component loading groundwater type Yulin city

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Clinical distribution and molecular profiling on postoperative colorectal cancer patients with different traditional Chinese medicine syndromes

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Traditional Medicine Research 2020年第1期5卷 44-52页

作者： Li-Jun Jin ying Liu Ming-Ming Zhang Xue-Meng Han Qiu-Jie Li Yu xiang Bing-Tao Zhai Peng chen xia-ying chen Wen-Gang Wang Shui-Ping Liu Duan Ting Jiao Feng Tian Xie Xin-Bing Sui Department of Traditional Chinese Medicine Hangzhou Jianggan District People’s HospitalHangzhouChina Department of Medical Oncology Sir Run Run Shaw HospitalCollege of MedicineZhejiang UniversityHangzhouChina Holistic Integrative Pharmacy Institutes and Comprehensive Cancer Diagnosis and Treatment Center the Affiliated Hospital of Hangzhou Normal UniversityCollege of MedicineHangzhou Normal UniversityHangzhouChina Key Laboratory of Elemene Class Anti-cancer Chinese Medicine of Zhejiang Province and Engineering Laboratory of Development and Application of Traditional Chinese Medicine from Zhejiang Province Hangzhou Normal UniversityHangzhouChina

Background:Traditional Chinese medicine(TCM)syndrome,also named syndrome,are comprehensive and integral analyses of clinical information which helps to guide different individualized treatment ***:Thirty healthy controls and 80 colorectal cancer(CRC)patients(including 33 Spleen Qi Deficiency syndrome,23 Dampness Heat syndrome,17 Blood Stasis syndrome and 7 other syndrome)were enrolled into this *** mRNAs were extracted from peripheral blood mononuclear *** gene expression for CRC patients with different TCM syndrome was determined by microarray and ***:Spleen Qi Deficiency,Dampness Heat and Blood Stasis were the most common syndromes in CRC *** is a significant difference was found in mRNA expression levels(especially for PIK3CA,STAT3,SOX9 and KDM5C)among Spleen Qi Deficiency,Dampness Heat and Blood Stasis syndrome *** higher mRNA levels of JNK1,TP53,MLH1,MSH6,PMS2,SOCS3,TCF7L2,FAM123B,PSAP,FBXW7,SALL4 and the lower expression of inflammatory cytokine IL-6 were found in Spleen Qi Deficiency group but not other syndrome *** higher mRNA levels of KRAS,MUC16,EGFR,GRASP65,PIK3CA,MAPK7,CD24,STAT3,SLC11A1,Bcl-2,TXNDC17 and some inflammatory cytokines(IL-6,IL-23,TNF-a,CXCR4)were found in Dampness Heat group but not other syndrome *** Stasis syndrome showed higher expression of SOX9,MLH1,MSH6,KDM5C,PCDH11X,PSAP and SALL4,and lower mRNA levels of PIK3CA,CD24,STAT3,CXCR4,TXNDC17 and *** CRC patients with Dampness Heat syndrome might have a poor prognosis than other syndrome ***:The identification of syndrome conditions had different impacts on CRC prognosis,and which might be related with different mRNA expression *** oncogenes and pro-inflammatory cytokines were highly expressed in Dampness Heat group but not other syndrome types,suggesting that the CRC patients with Dampness Heat syndrome might have a poor *** results prelimitarily uncovered the molecular basis of

关键词： Traditional Chinese medicine Clinical distribution Molecular profiling Colorectal cancer Syndrome differentiation Pattern diagnosis

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Chondroitinase ABC combined with Schwann cell transplantation enhances restoration of neural connection and functional recovery following acute and chronic spinal cord injury

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Neural Regeneration Research 2025年第5期20卷 1467-1482页

作者： Wenrui Qu xiangbing Wu Wei Wu ying Wang Yan Sun Lingxiao Deng Melissa Walker chen chen Heqiao Dai Qi Han ying Ding Yongzhi xia George Smith Rui Li Nai-Kui Liu xiao-Ming Xu Spinal Cord and Brain Injury Research Group Stark Neurosciences Research InstituteDepartment of Neurological SurgeryIndiana University School of MedicineIndianapolisINUSA Department of Hand Surgery the Second Hospital of Jilin UniversityChangchunJilin ProvinceChina Shriners Hospitals Pediatric Research Center Temple University School of MedicinePhiladelphiaPAUSA Department of Anatomy&Cell Biology Indiana University School of MedicineIndianapolisINUSA

Schwann cell transplantation is considered one of the most promising cell-based therapy to repair injured spinal cord due to its unique growth-promoting and myelin-forming properties.A the Food and Drug Administration-approved Phase I clinical trial has been conducted to evaluate the safety of transplanted human autologous Schwann cells to treat patients with spinal cord injury.A major challenge for Schwann cell transplantation is that grafted Schwann cells are confined within the lesion cavity,and they do not migrate into the host environment due to the inhibitory barrier formed by injury-induced glial scar,thus limiting axonal reentry into the host spinal *** we introduce a combinatorial strategy by suppressing the inhibitory extracellular environment with injection of lentivirus-mediated transfection of chondroitinase ABC gene at the rostral and caudal borders of the lesion site and simultaneously leveraging the repair capacity of transplanted Schwann cells in adult rats following a mid-thoracic contusive spinal cord *** report that when the glial scar was degraded by chondroitinase ABC at the rostral and caudal lesion borders,Schwann cells migrated for considerable distances in both rostral and caudal *** Schwann cell migration led to enhanced axonal regrowth,including the serotonergic and dopaminergic axons originating from supraspinal regions,and promoted recovery of locomotor and urinary bladder ***,the Schwann cell survival and axonal regrowth persisted up to 6 months after the injury,even when treatment was delayed for 3 months to mimic chronic spinal cord *** findings collectively show promising evidence for a combinatorial strategy with chondroitinase ABC and Schwann cells in promoting remodeling and recovery of function following spinal cord injury.

关键词： axonal regrowth bladder function chondroitinase ABC functional recovery glial scar lentivirus migration Schwann cell spinal cord injury transplantation

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Potential dependence in electrocatalysis: a theoretical perspective

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Science China Chemistry 2025年第1期68卷 21-25页

作者： Leyu Liu Zhaoming xia Zeyu Wang Yinjuan chen Hai xiao Department of Chemistry Tsinghua University Fundamental Science Center of Rare Earths Ganjiang Innovation Academy Chinese Academy of Sciences Key Laboratory of Advanced Catalytic Materials and Technology Advanced Catalysis and Green Manufacturing Collaborative Innovation Center Changzhou University

Electrocatalysis is a key technology for the new energy era and sustainable development, serving as the interface for interconversion of electrical and chemical energies, which spans a wide spectrum of applications in sustainable energy and environmental engineering. Electrocatalytic reactions including electrochemical CO2reduction reaction （eCO2RR）, hydrogen evolution reaction （HER）, and oxygen evolution/reduction reactions （OER/ORR）, hold essential promise for renewable energy technologies as well as complement the biogeochemical carbon and oxygen cycles.

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Inexact proximal gradient algorithm with random reshuffling for nonsmooth optimization

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Science China(Information Sciences) 2025年第1期68卷 219-237页

作者： xia JIANG Yanyan FANG xianlin ZENG Jian SUN Jie chen National Key Lab of Autonomous Intelligent Unmanned Systems School of AutomationBeijing Institute of Technology Beijing Institute of Technology Chongqing Innovation Center School of Electronic and Information Engineering Tongji University

Proximal gradient algorithms are popularly implemented to achieve convex optimization with nonsmooth regularization. Obtaining the exact solution of the proximal operator for nonsmooth regularization is challenging because errors exist in the computation of the gradient; consequently, the design and application of inexact proximal gradient algorithms have attracted considerable attention from researchers. This paper proposes computationally efficient basic and inexact proximal gradient descent algorithms with random reshuffling. The proposed stochastic algorithms take randomly reshuffled data to perform successive gradient descents and implement only one proximal operator after all data pass through. We prove the convergence results of the proposed proximal gradient algorithms under the sampling-without-replacement reshuffling *** computational errors exist in gradients and proximal operations, the proposed inexact proximal gradient algorithms can converge to an optimal solution neighborhood. Finally, we apply the proposed algorithms to compressed sensing and compare their efficiency with some popular algorithms.

关键词： proximal operator random reshuffling inexact computation compressed sensing nonsmooth optimization

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NOX4 exacerbates Parkinson's disease pathology by promoting neuronal ferroptosis and neuroinflammation

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Neural Regeneration Research 2025年第7期20卷 2038-2052页

作者： Zhihao Lin Changzhou ying xiaoli Si Naijia Xue Yi Liu Ran Zheng ying chen Jiali Pu Baorong Zhang Department of Neurology The Second Affiliated HospitalZhejiang University School of MedicineHangzhouZhejiang ProvinceChina

Parkinson's disease is primarily caused by the loss of dopaminergic neurons in the substantia nigra ***,a novel form of regulated cell death characterized by iron accumulation and lipid peroxidation,plays a vital role in the death of dopaminergic ***,the molecular mechanisms underlying ferroptosis in dopaminergic neurons have not yet been completely *** oxidase 4 is related to oxidative stress,however,whether it regulates dopaminergic neuronal ferroptosis remains *** aim of this study was to determine whether NADPH oxidase 4 is involved in dopaminergic neuronal ferroptosis,and if so,by what *** found that the transcriptional regulator activating transcription factor 3 increased NADPH oxidase 4 expression in dopaminergic neurons and astrocytes in an 1-methyl-4-phenyl-1,2,3,6 tetrahydropyridine-induced Parkinson's disease *** oxidase 4 inhibition improved the behavioral impairments observed in the Parkinson's disease model animals and reduced the death of dopaminergic ***,NADPH oxidase 4 inhibition reduced lipid peroxidation and iron accumulation in the substantia nigra of the Parkinson's disease model ***,we found that NADPH oxidase 4 interacted with activated protein kinase Cαto prevent ferroptosis of dopaminergic ***,by lowering the astrocytic lipocalin-2 expression,NADPH oxidase 4 inhibition reduced 1-methyl-4-phenyl-1,2,3,6 tetrahydropyridine-induced *** findings demonstrate that NADPH oxidase 4 promotes ferroptosis of dopaminergic neurons and neuroinflammation,which contribute to dopaminergic neuron death,suggesting that NADPH oxidase 4 is a possible therapeutic target for Parkinson's disease.

关键词： dopaminergic neuron ferroptosis NADPH oxidase 4(NOX4) neuroinflammation Parkinson's disease

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Observation of topological charge transformations in acoustic vortex using passive periodic systems

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 140-147页

作者： Di-Chao chen Xie Liu Changqing Xu Da-Jian Wu ying cheng xiao-Jun Liu School of Physics and Technology Nanjing Normal University Key Laboratory of Modern Acoustics School of Physics Nanjing University

Vortex transmutation utilizes a periodic system, which not only enables the alteration of the topological charge(TC) of unstable input vortices but also facilitates their transformation into stable structures. This approach is crucial for investigating the characteristics of vortices in various wave systems. Here, we achieve acoustic vortex TC transmutation by employing a welldesigned dual-structured plate external system(DPES). The interactions between the acoustic vortex and the finite-order discrete rotational symmetry lead to the transformation of its topological charge when complete rotational symmetry is broken to Nthorder discrete symmetry. Our results experimentally demonstrate the acoustic vortex TC transmutation based on passive artificial structures, enabling numerous applications in particle manipulation and information multiplexing as well as advancing our understanding and control over free-space acoustic vortices.

关键词： acoustic vortex topological charge transformation artificial structure

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Metabolic reprogramming: a new option for the treatment of spinal cord injury

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Neural Regeneration Research 2025年第4期20卷 1042-1057页

作者： Jiangjie chen Jinyang chen Chao Yu Kaishun xia Biao Yang Ronghao Wang Yi Li Kesi Shi Yuang Zhang Haibin Xu Xuesong Zhang Jingkai Wang Qixin chen chengzhen Liang Department of Orthopedics The Second Affiliated Hospital of Zhejiang University School of MedicineHangzhouZhejiang ProvinceChina Orthopedics Research Institute of Zhejiang University Zhejiang UniversityHangzhouZhejiang ProvinceChina Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province HangzhouZhejiang ProvinceChina Clinical Research Center of Motor System Disease of Zhejiang Province HangzhouZhejiang ProvinceChina Qiandongnan Prefecture People’s Hospital KailiGuizhou ProvinceChina Department of Orthopedics Fourth Medical CenterChinese PLA General HospitalBeijingChina

Spinal cord injuries impose a notably economic burden on society,mainly because of the severe after-effects they *** the ongoing development of various therapies for spinal cord injuries,their effectiveness remains ***,a deeper understanding of metabolism has opened up a new therapeutic opportunity in the form of metabolic *** this review,we explore the metabolic changes that occur during spinal cord injuries,their consequences,and the therapeutic tools available for metabolic *** spinal cord metabolism is characterized by independent cellular metabolism and intercellular metabolic ***,spinal cord injury results in metabolic disorders that include disturbances in glucose metabolism,lipid metabolism,and mitochondrial *** metabolic disturbances lead to corresponding pathological changes,including the failure of axonal regeneration,the accumulation of scarring,and the activation of *** rescue spinal cord injury at the metabolic level,potential metabolic reprogramming approaches have emerged,including replenishing metabolic substrates,reconstituting metabolic couplings,and targeting mitochondrial therapies to alter cell *** available evidence suggests that metabolic reprogramming holds great promise as a next-generation approach for the treatment of spinal cord *** further advance the metabolic treatment of the spinal cord injury,future efforts should focus on a deeper understanding of neurometabolism,the development of more advanced metabolomics technologies,and the design of highly effective metabolic interventions.

关键词： axons glycolysis metabolic reprogramming metabolism mitochondria neural regeneration neuroprotection oxidative phosphorylation spinal cord injury therapy

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