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Beta-nerve growth factor gene therapy alleviates pyridoxine-induced neuropathic damage by increasing doublecortin and tyrosine kinase A in the dorsal root ganglion

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Neural Regeneration Research 2020年第1期15卷 162-168页

作者： Hyun-Kee Cho Woosuk Kim Kwon-young Lee jin-Ok Ahn Jung Hoon Choi In Koo Hwang jin-young chung Department of Veterinary Internal Medicine and Institute of Veterinary Science College of Veterinary MedicineKangwon National UniversityChuncheonKangwon-doSouth Korea Department of Anatomy and Cell Biology College of Veterinary MedicineResearch Institute for Veterinary ScienceSeoul National UniversitySeoulSouth Korea Department of Anatomy College of Veterinary MedicineKangwon National UniversityChuncheonKangwon-doSouth Korea

Beta-nerve growth factor(β-NGF)is known to be a major leading cause of neuronal *** identify the possible action mechanisms ofβ-NGF gene therapy for sciatic nerve recovery,experimental dogs were randomly divided into control,pyridoxine,and pyridoxine+β-NGF *** observed chronological changes of morphology in the dorsal root ganglia in response to pyridoxine toxicity based on cresyl violet *** number of large neurons positive for cresyl violet was dramatically decreased after pyridoxine intoxication for 7 days in the dorsal root ganglia and the neuron number was gradually increased after pyridoxine *** addition,we also investigated the effects ofβ-NGF gene therapy on neuronal plasticity in pyridoxine-induced neuropathic *** accomplish this,tyrosine kinase receptor A(TrkA),βIII-tubulin and doublecortin(DCX)immunohistochemical staining was performed at 3 days after the last pyridoxine ***-immunoreactive neurons were dramatically decreased in the pyridoxine group compared to the control group,but strong TrkA immunoreactivity was observed in the small-sized dorsal root ganglia in this *** immunoreactivity in the dorsal root ganglia was similar betweenβ-NGF and control *** numbers ofβⅢ-tubulin-and DCX-immunoreactive cells decreased significantly in the pyridoxine group compared to the control ***,the reduction ofβⅢ-tubulin-and DCX-immunoreactive cells in the dorsal root ganglia in theβ-NGF group was significantly ameliorated than that in the pyridoxine *** results indicate thatβ-NGF gene therapy is a powerful treatment of pyridoxine-induced neuropathic damage by increasing the TrkA and DCX levels in the dorsal root *** experimental protocol was approved by the Institutional Animal Care and Use Committee(IACUC)of Seoul National University,South Korea(approval ***-060623-1,SNU-091009-1)on June 23,2006 and October 9,2009,respectively.

关键词： β-nerve growth factor βⅢ-tubulin doublecortin gene therapy neuron-glial antigen 2 neuropathy pyridoxine

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Environmentally adaptive reshaping of plant photomorphogenesis by karrikin and strigolactone signaling

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Journal of Integrative Plant Biology 2024年第5期66卷 865-882页

作者： young-Joon Park Bo Eun Nam chung-Mo Park Department of Smart Farm Science Kyung Hee UniversityYongin 17104Korea Departmentof Biological Sciences Seoul National UniversitySeoul 08826Korea Department of Chemistry Seoul National UniversitySeoul 08826Korea

Coordinated morphogenic adaptation of growing plants is critical for their survival and propagation under fluctuating *** morphogenic responses to light and warm temperatures,termed photomorphogenesis and thermomorphogenesis,respectively,have been extensively studied in recent *** photomorphogenesis,plants actively reshape their growth and developmental patterns to cope with changes in light ***,photomorphogenesis is closely associated with diverse growth hormonal ***,accumulating evidence indicates that light-directed morphogenesis is profoundly affected by two recently identified phytochemicals,karrikins(KARs)and strigolactones(SLs).KARs and SLs are structurally related butenolides acting as signaling molecules during a variety of developmental steps,including seed *** receptors and signaling mediators have been identified,and associated working mechanisms have been explored using gene-deficient mutants in various plant *** particular interest is that the KAR and SL signaling pathways play important roles in environmental responses,among which their linkages with photomorphogenesis are most comprehensively studied during seedling *** this review,we focus on how the phytochemical and light signals converge on the optimization of morphogenic *** also discuss molecular mechanisms underlying the signaling crosstalks with an aim of developing potential ways to improve crop productivity under climate changes.

关键词： karrikins morphogenic adaptation photomorphogenesis seedling establishment strigolactones

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The neuroprotective effects of human growth hormone as a potential treatment for amyotrophic lateral sclerosis

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Neural Regeneration Research 2015年第8期10卷 1201-1203页

作者： jin-young chung Jun-Sang Sunwoo Min-Wook Kim Manho Kim Department of Veterinary Internal Medicine and Geriatrics Kangwon National University Department of Neurology Seoul National University Hospital Department of Rehabilitation Medicine College of Medicine The Catholic University of Korea Institute of Catholic Integrative Medicine (ICIM) Incheon St. Mary’s Hospital Protein Metabolism Medical Research Center Seoul National University College of Medicine

Human growth hormone（GH）is a single-chain polypeptide of 191 amino acids that is involved in the regulation of various physiological processes,such as growth and *** is synthesized and secreted by somatotropic cells in the anterior pituitary *** secretion is primarily regulated by a balance between growth hormone-releasing hormone and growth hormone-inhibiting hormone,

关键词： amyotrophic metabolism secretion physiological inhibiting secreted neuronal primarily pituitary polypeptide

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Scalp electroacupuncture at the Baihui acupoint (DU 20) improves functional recovery in rats with cerebral ischemia Association with increased expression of vascular endothelial growth factors

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Neural Regeneration Research 2011年第36期6卷 2822-2828页

作者： Min-Wook Kim You Chul chung Hee Chan Jung Moon-Seo Park young-Min Han Yong-An chung Lee-So Maeng Sang-In Park Jiyeon Lim Seung Chan Kim Woo-Seok Im jin young chung Minky Kim Manho Kim Institute of Catholic Integrative Medicine (ICIM) Incheon St. Mary’s Hospital Catholic University of Korea Incheon Korea Department of Rehabilitation Medicine Catholic University of Korea Seoul Korea Department of Neurology Seoul National University Hospital SNUMRC Seoul Korea Department of Biotechnology Yonsei University Seoul Korea Department of Neurology Seoul Medical Center Seoul Korea

In this study, we induced cerebral infarction in rats by occluding the right middle cerebral artery, and tested the effects of electroacupuncture at the Baihui acupoint （DU 20）. Motor and sensory function was tested using Garcia’s scale and motor weakness grading, and the expression of vascular endothelial growth factor in the brain was quantified using immunoblotting and immunohistochemistry. We found that scalp electroacupuncture at DU 20 significantly improved motor performance and sensory function in rats with stroke, and this was accompanied by an increased expression of vascular endothelial growth factor in the ischemic brain tissue and peri-ischemic area. In addition, Pearson correlation analysis showed that the improvements in functional recovery were correlated with the increased expression of vascular endothelial growth factor.

关键词： electroacupuncture cerebrovascular disorder vascular endothelial growth factor Baihui acupoint functional improvement

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Combined Insights from Leachate Structure and Microstructure Characteristics for Eating Quality of Convenience Rice Processed by Super-Heated and Pressurized Steam Technologies

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Rice science 2024年第4期31卷 475-488,I0035,I0036页

作者： Mingyo HA Hyo-young JEONG Ju Hun LEE Hyun-Jung chung Division of Food and Nutrition Chonnam National UniversityGwangju 61186South Korea Department of Biotechnology College of Life Sciences and BiotechnologyKorea UniversitySeoul 02841South Korea Division of Food Science&Culinary Arts Shinhan UniversityGyeonggi 11644South Korea

Convenience rice has become widely popular due to its easy availability for cooking. This study investigated the starch structure and composition of leachate and the microstructure of reheated convenience rice using novel processing technologies: super-heated steaming(SHS), auto-electric cooking(AEC), and pressurized-steam cooking(PSC). Additionally, the effect of two different target water contents(58% and 63%) was also evaluated. The PSC_63% sample had the highest total solids and amylopectin amount in the leachate. The amylopectin amount in the leachate differed significantly based on the targeted water content. Morphological characterization revealed that the swelling of starch and the coated layer on the surface of rice grains were most pronounced in the PSC_63% sample due to the pressure processing. The textural hardness of the AEC_58% sample was much higher than that of the other samples. The PSC_63% sample had the highest textural adhesiveness value, which can be attributed to the highest amylopectin amount in the leachate. Sensory characterization showed that the PSC_63% sample had the highest glossiness, whiteness, moistness, and overall acceptability. The principal component analysis score plots presented substantial differences in the leachate and textural and sensory characteristics of reheated convenience rice among the different processing technologies.

关键词： reheated convenience rice starch structure leachate multi-scale structure eating quality processing technology

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Entacapone promotes hippocampal neurogenesis in mice

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Neural Regeneration Research 2021年第6期16卷 1005-1010页

作者： Dae young Yoo Hyo young Jung Woosuk Kim Kyu Ri Hahn Hyun Jung Kwon Sung Min Nam jin young chung Yeo Sung Yoon Dae Won Kim In Koo Hwang Department of Anatomy and Cell Biology College of Veterinary Medicineand Research Institute for Veterinary ScienceSeoul National UniversitySeoulSouth Korea Department of Anatomy College of MedicineSoonchunhyang UniversityCheonanSouth Korea Department of Biomedical Sciences and Research Institute for Bioscience and BiotechnologyHallym UniversityChuncheonSouth Korea Department of Biochemistry and Molecular Biology Research Institute of Oral SciencesCollege of DentistryGangneung-Wonju National UniversityGangneungSouth Korea Department of Anatomy College of Veterinary MedicineKonkuk UniversitySeoulSouth Korea Department of Veterinary Internal Medicine and Geriatrics College of Veterinary MedicineKangwon National UniversityChuncheonSouth Korea

Entacapone,a catechol-O-methyltransferase inhibitor,can strengthen the therapeutic effects of levodopa on the treatment of Parkinson’s ***,few studies are reported on whether entacapone can affect hippocampal neurogenesis in *** investigate the effects of entacapone,a modulator of dopamine,on proliferating cells and immature neurons in the mouse hippocampal dentate gyrus,60 mice(7 weeks old)were randomly divided into a vehicle-treated group and the groups treated with 10,50,or 200 mg/kg *** results showed that 50 and 200 mg/kg entacapone increased the exploration time for novel object *** staining results revealed that after entacapone treatment,the numbers of Ki67-positive proliferating cells,doublecortin-positive immature neurons,and phosphorylated cAMP response element-binding protein(pCREB)-positive cells were significantly *** blot analysis results revealed that treatment with tyrosine kinase receptor B(TrkB)receptor antagonist significantly decreased the exploration time for novel object recognition and inhibited the expression of phosphorylated TrkB and brain-derived neurotrophic factor(BDNF).Entacapone treatment antagonized the effects of TrkB receptor *** results suggest that entacapone treatment promoted hippocampal neurogenesis and improved memory function through activating the BDNF-TrkB-pCREB *** study was approved by the Institutional Animal Care and Use Committee of Seoul National University(approval ***-130730-1)on February 24,2014.

关键词： brain-derived neurotrophic factor entacapone hippocampus neurogenesis neurotrophic factor phosphorylated cAMP response element-binding protein tyrosine kinase receptor B receptor

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Integration of earth-abundant cocatalysts for high-performance photoelectrochemical energy conversion

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Journal of Energy Chemistry 2024年第1期88卷 336-355,I0008页

作者： Joonhee Ma Sang Hyun Ahn Soo young Kim Department of Materials Science and Engineering Korea UniversitySeoul 02841Republic of Korea School of Chemical Engineering and Materials Science Chung-Ang University84 Heukseok-roDongjak-guSeoul 06974Republic of Korea

Photoelectrochemical(PEC)energy conversion has emerged as a promising and efficient approach to sustainable energy harvesting and *** utilizing semiconductor photoelectrodes,PEC devices can harness solar energy and drive electrochemical reactions such as water splitting or carbon dioxide(CO_(2))reduction to generate clean fuels and value-added ***,PEC energy conversion faces several challenges such as high overpotential,sluggish reaction kinetics,charge carrier recombination,and stability issues,which limit its practical ***,significant research has been conducted to improve the overall conversion efficiency of PEC *** particularly promising approach is the use of cocatalysts,which involves introducing specific cocatalysts onto the photoelectrode surface to promote charge separation,improve reaction kinetics,and reduce the overpotential,thereby enhancing the overall performance of PEC energy *** review provides a comprehensive overview of the recent developments in the earth-abundant cocatalysts for PEC water splitting and CO_(2) *** main earth-abundant catalysts for the PEC water splitting include transition-metal dichalcogenide(TMD)-based materials,metal phosphides/carbides,and metal oxides/***,PEC-CO_(2)RR was divided into C_(1) and C_(2+)based on the final product since various products could be produced,focusing on diverse earth-abundant materials-based *** addition,we provide and highlight key advancements achieved in the very recent reports on novel PEC system design engineering with ***,the current problems associated with PEC systems are discussed along with a suggested direction to overcome these obstacles.

关键词： Solar energy Photo-electrochemical Water splitting CO_(2)reduction Cocatalysts

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Recent progress and future research directions for electrochromic zinc-ion batteries

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Journal of Energy Chemistry 2024年第3期90卷 220-232,I0007页

作者： Tae Gwang Yun Byungil Hwang Jun young Cheong Department of Molecular Science and Technology Ajou UniversitySuwon 16499Republic of Korea School of Integrative Engineering Chung-Ang UniversitySeoul 06974Republic of Korea Bavarian Center for Battery Technology(Bay Batt)and Department of Chemistry University of Bayreuth95447 BayreuthGermany

In recent times,future energy storage systems demand a multitude of functionalities beyond their traditional energy storage *** line with this technological shift,there is active research and development of electrochromic-energy storage systems designed to visualize electrochemical charging and discharging *** conventional electrochromic-energy storage devices primarily integrated supercapacitors,known for their high power density,to enable rapid color ***,the low energy density of supercapacitors restricts overall energy storage capacity,acting as a significant barrier to expanding the application range of such *** this review,we introduce electrochromic zinc(Zn)-ion battery systems,which effectively overcome the limitation of low energy density,and provide illustrative examples of their applicability across diverse *** many recent research works are present for electrochromic Zn-ion batteries,little review has so far taken *** objective is to discuss on the current progress and future directions for electrochromic Zn-ion batteries,which are applicable for wearable electronics applications and energy storage *** review provides an initial milestone for future researchers in electrochromic energy storage and zinc-ion batteries,which will lead to a stream of future works related to them.

关键词： Electrochromic Zn-ion battery Flexible Transition metal oxide Conductive polymer

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A Cu-Pd alloy catalyst with partial phase separation for the electrochemical CO_(2) reduction reaction

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Journal of Energy Chemistry 2024年第6期93卷 8-15,I0001页

作者： Gyeong Ho Han Jung Yong Seo Minji Kang Myung-gi Seo youngheon Choi Soo young Kim Sang Hyun Ahn School of Chemical Engineering and Material Science Chung-Ang UniversitySeoul 06974Republic of Korea Lotte Chemical Institute of Technology Daejeon 34110Republic of Korea Department of Materials Science and Engineering Korea UniversitySeoul 02841Republic of Korea

Cu catalysts can convert CO_(2) through an electrochemical reduction reaction into a variety of useful carbon-based ***,this capability provides an obstacle to increasing the selectivity for a single ***,we report a simple fabrication method for a Cu-Pd alloy catalyst for use in a membrane electrode assembly(MEA)-based CO_(2) electrolyzer for the electrochemical CO_(2) reduction reaction(ECRR)with high selectivity for CO *** the composition of the Cu-Pd alloy catalyst was fabricated at 6:4,the selectivity for CO increased and the production of multi-carbon compounds and hydrogen is *** a Cu-Pd alloy catalyst with 6:4 ratio as the cathode of the MEAbased CO_(2) electrolyzer showed a CO faradaic efficiency of 92.8%at 2.4 V_(cell).We assumed that these results contributed from the crystal planes on the surface of the Cu-Pd *** phases of the Cu-Pd alloy catalyst were partially separated through annealing to fabricate a catalyst with high selectivity for CO at low voltage and C_(2)H_4 at high *** results of CO-stripping testing confirmed that when Cu partially separates from the lattice of the Cu-Pd alloy,the desorption of~*CO is suppressed,suggesting that C-C coupling reaction is favored.

关键词： Cu-Pd catalyst Electrodeposition Electrochemical carbon dioxide reduction Partial phase separation Membrane electrode assembly-based electrolyzer

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Comparison Study and Forensic Analysis between Experiment and Coupled Dynamics Simulation for Submerged Floating Tunnel Segment with Free Ends under Wave Excitations

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Computer Modeling in Engineering & Sciences 2023年第10期137卷 155-174页

作者： Woo Chul chung chungkuk jin Moo Hyun Kim Ju-young Hwang Division of Mechanical Engineering Korea Maritime&Ocean UniversityBusanSouth Korea Department of Ocean Engineering and Marine Sciences Florida Institute of TechnologyMelbourneFLUSA Department of Ocean Engineering Texas A&M UniversityCollege StationTXUSA Department of Civil Engineering Dong-Eui UniversityBusanSouth Korea

This paper presents dynamic-behavior comparisons and related forensic analyses of a submerged floating tunnel(SFT)between numerical simulation and physical experiment under regular and irregular *** experiments are conducted in the 3Dwave tank with 1:33.3 scale,and the corresponding coupled time-domain simulation tool is devised for *** entire SFT systemconsists of a long concrete tunnel and 12 tubular aluminummooring *** numerical simulation models,the Cummins equation with 3D potential theory including second-order wave-body interaction effects and the much simpler Morison-equation-based formula with the lumped-massbased line model,are designed and *** analyses for mooring-line adjustments in the simulation are carried out in view of the best representation of the physical *** that,the measured pre-tension distribution and systemstiffness of twelvemooring lines arewell reproduced in the ***,the dynamic responses and mooring tensions of the SFT are compared under regular and irregular *** measured and simulated results coincide reasonably well for both regular-and irregular-wave conditions.

关键词： Submerged floating tunnel comparative study forensic analysis mooring-line modeling dynamic response mooring tension

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