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Gram-negative bacteria and their lipopolysaccharides in Alzheimer’s disease:pathologic roles and therapeutic implications

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Translational Neurodegeneration 2021年第4期10卷 643-665页

作者： Hyeon soo Kim Sujin Kim Soo Jung Shin Yong Ho park Yunkwon Nam Chae won Kim Kang won Lee Sung-min Kim In Duk Jung Hyun Duk Yang yeong-min park minho Moon Department of Biochemistry College of MedicineKonyang UniversityDaejeon 35365Republic of Korea Research Institute for Dementia Science Konyang UniversityDaejeon 35365Republic of Korea Dandi Bioscience Inc 6th Floor of Real Company Building66Achasan-roSungdong-guSeoulRepublic of Korea Harvard Neurology Clinic 294 Gwanggyojungang-roSuji-guYongin 16943Republic of Korea Department of Immunology School of MedicineKonkuk University268ChungwondaeroChungju-siChungcheongbuk-doRepublic of Korea

Alzheimer's disease(AD)is the most serious age-related neurodegenerative disease and causes destructive and irreversible cognitive *** in the development of therapeutics targeting amyloid-β(Aβ)and tau;principal proteins inducing pathology in AD,suggest a paradigm shift towards the development of new therapeutic *** gram-negative bacteria and lipopolysaccharides(LPS)are attractive new targets for AD ***,an altered distribution of gram-negative bacteria and their LPS has been reported in AD ***,gram-negative bacteria and their LPS have been shown to affect a variety of AD-related pathologies,such as Aβ homeostasis,tau pathology,neuroinflammation,and ***,therapeutic approaches targeting gram-negative bacteria or gram-negative bacterial molecules have significantly alleviated AD-related pathology and cognitive *** multiple evidence showing that the gram-negative bacteria and their LPS play a crucial role in AD pathogenesis,the pathogenic mechanisms of gram-negative bacteria and their LPS have not been ***,we summarize the roles and pathomechanisms of gram-negative bacteria and LPS in ***,we discuss the possibility of using gram-negative bacteria and gram-negative bacterial molecules as novel therapeutic targets and new pathological characteristics for AD.

关键词： Alzheimer's disease Gram-negative bacteria Lipopolysaccharide Exotoxin Amyloid beta Tau

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Intelligent reflecting surface for sum rate enhancement in MIMO systems

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Digital Communications and Networks 2024年第1期10卷 94-100页

作者： Chan-Yeob park Ji-Sung Jung yeong-Rong Lee Beom-Sik Shin Hyoung-Kyu Song Department of Information and Communication Engineering Sejong UniversitySeoulGwangjin-guGunja-dong 98Republic of Korea Department of Convergence Engineering for Intelligent Drone Sejong University SeoulGwangjin-guGunja-dong 98Republic of Korea

The research for the Intelligent Reflecting Surface(IRS)which has the advantages of cost and energy efficiency has been *** capacity can be effectively increased by appropriately setting the phase value of IRS elements according to the channel ***,the problem of obtaining an appropriate phase value of IRs is difficult to solve due to the non-convex *** paper proposes an iterative algorithm for the alternating optimal solution in the Single User Multiple-Input-Multiple-Output(SU-MIMO)*** proposed iterative algorithm finds an alternating optimal solution that is the phase value of IRS one by *** results show that the proposed method has better performance than that of the randomized IRS *** number of iterations for maximizing the performance of the proposed algorithm depends on the channel state between the IRS and the receiver.

关键词： Intelligent reflecting surface MIMO Sum rate

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Capsosiphon fulvescens suppresses LPS-stimulated inflammatory responses by suppressing TLR4/NF-κB activation in RAW264.7 murine macrophages

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Asian Pacific Journal of Tropical Biomedicine 2024年第3期14卷 115-126页

作者： Seon yeong Ji EunJin Bang Hyun Hwangbo min yeong Kim Da Hye Kim Su Hyun Hong Shin-Hyung park Chang-Young Kwon Gi-Young Kim You-Jin Jeon Suengmok Cho Yung Hyun Choi Department of Biochemistry Dong-eui University College of Korean MedicineBusan 47227Republic of Korea Basic Research Laboratory for the Regulation of Microplastic-Mediated Diseases and Anti-Aging Research Center Dong-eui UniversityBusan 47227Republic of Korea Department of Pathology Dong-eui University College of Korean MedicineBusan 47227Republic of Korea Department of Oriental Neuropsychiatry Dong-eui University College of Korean MedicineBusan 47227Republic of Korea Department of Marine Life Science Jeju National UniversityJeju 63243Republic of Korea Department of Food Science and Technology/Institute of Food Science Pukyong National UniversityBusan 48513Republic of Korea

Objective:To evaluate the effects of Capsosiphon fulvescens(***)ethanolic extract on inflammation in lipopolysaccharide(LPS)-induced RAW296.7 ***:The protective effects of *** ethanolic extract on LPS-induced inflammation in RAW264.7 macrophages were assessed using biochemical analysis,including enzyme-linked immunosorbent assay,quantitative reverse transcription-polymerase chain reaction,and Western blot *** examine reactive oxygen species(ROS)production,flow cytometry analysis,and immunofluorescence staining were ***,the modulatory effect of *** ethanolic extract on NF-κB activation was ***:*** ethanolic extract significantly attenuated LPS-induced levels of pro-inflammatory cytokines and notably reduced the secretion and mRNA levels of LPS-mediated matrix *** addition,*** ethanolic extract decreased ROS production and suppressed the TLR4/NF-κB signaling ***:*** ethanolic extract alleviates inflammation as well as oxidative stress by modulating the TLR4/NF-κB signaling in LPS-induced RAW264.7 *** can be used as a potential therapeutic agent to suppress inflammation and oxidative stress-associated diseases.

关键词： Capsosiphon fulvescens Inflammation Oxidative stress NF-κB Nrf2 TLR4

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Multifunctional MXene/Carbon Nanotube Janus Film for Electromagnetic Shielding and Infrared Shielding/Detection in Harsh Environments

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Nano-Micro Letters 2024年第10期16卷 543-560页

作者： Tufail Hassan Aamir Iqbal Byungkwon Yoo Jun Young Jo Nilufer Cakmakci Shabbir Madad Naqvi Hyerim Kim Sungmin Jung Noushad Hussain Ujala Zafar Soo yeong Cho Seunghwan Jeong Jaewoo Kim Jung min Oh Sangwoon park Youngjin Jeong Chong min Koo School of Advanced Materials Science and Engineering Sungkyunkwan UniversitySeobu-ro 2066Jangan-guSuwon-siGyeonggi-do 16419Republic of Korea Department of Materials Science and Engineering Soongsil UniversitySeoul 06978Republic of Korea Institute of Advanced Composite Materials Korea Institute of Science and Technology92 Chudong-roBongdong-eupWanju-gunJeollabuk-do 55324Republic of Korea R&D Center INNOMXENE Co. Ltd.Daejeon 34365Republic of Korea School of Chemical Engineering Sungkyunkwan UniversitySeobu-ro 2066Jangan-guSuwon-siGyeonggi-do 16419Republic of Korea

Multifunctional,flexible,and robust thin films capable of operating in demanding harsh temperature environments are crucial for various cutting-edge *** study presents a multifunctional Janus film integrating highly-crystalline Ti_(3)C_(2)T_(x) MXene and mechanically-robust carbon nanotube(CNT)film through strong hydrogen *** hybrid film not only exhibits high electrical conductivity(4250 S cm^(-1)),but also demonstrates robust mechanical strength and durability in both extremely low and high temperature environments,showing exceptional resistance to thermal *** hybrid Janus film of 15μm thickness reveals remarkable multifunctionality,including efficient electromagnetic shielding effectiveness of 72 dB in X band frequency range,excellent infrared(IR)shielding capability with an average emissivity of 0.09(a minimal value of 0.02),superior thermal camouflage performance over a wide temperature range(−1 to 300℃)achieving a notable reduction in the radiated temperature by 243℃ against a background temperature of 300℃,and outstanding IR detection capability characterized by a 44%increase in resistance when exposed to 250 W IR *** multifunctional MXene/CNT Janus film offers a feasible solution for electromagnetic shielding and IR shielding/detection under challenging conditions.

关键词： MXene/carbon nanotube Janus film Electromagnetic interference shielding Infrared shielding Thermal camouflage Infrared detection

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Efficacy of chemotherapy containing bevacizumab in patients with metastatic colorectal cancer according to programmed cell death ligand 1

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World Journal of Gastrointestinal Oncology 2024年第8期16卷 3521-3528页

作者： Shin Woo Kang Sung Hee Lim min-Ji Kim Jeeyun Lee Young Suk park Ho yeong Lim Won Ki Kang Seung Tae Kim Division of Hematology Oncology Department of MedicineSamsung Medical CenterSungkyunkwan University School of MedicineSeoul 06351South Korea Samsung Biomedical Research Institute Samsung Medical CenterSeoul 06351South Korea

BACKGROUND Bevacizumab,an anti-vascular endothelial growth factor(VEGF)monoclonal antibody,inhibits angiogenesis and reduces tumor *** VEGF-C,lactate dehydrogenase,and inflammatory markers have been reported as predictive markers related to bevacizumab *** cell death ligand 1(PD-L1)could act upon VEGF receptor 2 to induce cancer cell angiogenesis and *** To investigate the efficacy of bevacizumab-containing chemotherapy in patients with metastatic colorectal cancer(CRC)according to the expression of *** This analysis included CRC patients who received bevacizumab plus FOLFOX or FOLFIRI as first-line therapy between June 24,2014 and February 28,2022,at Samsung Medical Center(Seoul,South Korea).Analysis of patient data included evaluation of PD-L1 expression by the combined positive score(CPS).We analyzed the efficacy of bevacizumab according to PD-L1 expression status in patients with *** A total of 124 patients was included in this *** all patients were treated with bevacizumab plus FOLFIRI or FOLFOX as the first-line *** 77%of patients received FOLFOX,23%received FOLFIRI as backbone first-line *** numbers of patients with a PD-L1 CPS of 1 or more,5 or more,or 10 or more were 105(85%),64(52%),and 32(26%),*** results showed no significant difference in progression-free survival(PFS)and overall survival(OS)with bevacizumab treatment between patients with PDL1 CPS less than 1 and those with PD-L1 CPS of 1 or more(PD-L1<1%vs PD-L1≥1%;PFS:P=0.93,OS:P=0.33),between patients with PD-L1 CPS less than 5 and of 5 or more(PD-L1<5%vs PD-L1≥5%;PFS:P=0.409,OS:P=0.746),and between patients with PD-L1 CPS less than 10 and of 10 or more(PD-L1<10%vs PD-L1≥10%;PFS:P=0.529,OS:P=0.568).CONCLUSION Chemotherapy containing bevacizumab can be considered as first-line therapy in metastatic CRC irrespective of PD-L1 expression.

关键词： Bevacizumab Colorectal cancer Programmed cell death ligand 1 expression First-line chemotherapy Metastatic colorectal cancer

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Real-Time Tunable Gas Sensing Platform Based on SnO2 Nanoparticles Activated by Blue Micro-Light-Emitting Diodes

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Nano-Micro Letters 2024年第12期16卷 103-119页

作者： Gi Baek Nam Jung-El Ryu Tae Hoon Eom Seung Ju Kim Jun min Suh Seungmin Lee Sungkyun Choi Cheon Woo Moon Seon Ju park Soo min Lee Byungsoo Kim Sung Hyuk park Jin Wook Yang Sangjin min Sohyeon park Sung Hwan Cho Hyuk Jin Kim Sang Eon Jun Tae Hyung Lee yeong Jae Kim Jae Young Kim Young Joon Hong Jong-In Shim Hyung-Gi Byun Yongjo park Inkyu park Sang-Wan Ryu Ho Won Jang Department of Materials Science and Engineering Seoul National UniversitySeoul 08826Republic of Korea Research Laboratory of Electronics Department of Mechanical EngineeringMassachusetts Institute of TechnologyCambridgeMA 02139USA ming Hsieh Department of Electrical and Computer Engineering University of Southern CaliforniaLos AngelesCA 90089USA Department of Display Materials Engineering Soonchunhyang UniversityAsan 31538Republic of Korea Department of Photonics and Nanoelectronics BK21 FOUR ERICA-ACE CenterHanyang University ERICAAnsan 15588Republic of Korea Department of Nanotechnology and Advanced Materials Engineering Sejong UniversitySeoul 05006Republic of Korea Department of Electronics Information and Communication EngineeringKangwon National UniversitySamcheok 25913Republic of Korea Advance Institute of Convergence Technology Seoul National UniversitySuwon 16229Republic of Korea Department of Mechanical Engineering Korea Advanced Institute of Science and TechnologyDaejeon 34141Republic of Korea Department of Physics Chonnam National UniversityGwangju 500-757Republic of Korea

Micro-light-emitting diodes(μLEDs)have gained significant interest as an activation source for gas sensors owing to their advantages,including room temperature operation and low power ***,despite these benefits,challenges still exist such as a limited range of detectable gases and slow *** this study,we present a blueμLED-integrated light-activated gas sensor array based on SnO_(2)nanoparticles(NPs)that exhibit excellent sensitivity,tunable selectivity,and rapid detection with micro-watt level power *** optimal power forμLED is observed at the highest gas response,supported by finite-difference time-domain ***,we first report the visible light-activated selective detection of reducing gases using noble metal-decorated SnO_(2)*** noble metals induce catalytic interaction with reducing gases,clearly distinguishing NH3,H2,and ***-time gas monitoring based on a fully hardwareimplemented light-activated sensing array was demonstrated,opening up new avenues for advancements in light-activated electronic nose technologies.

关键词： Micro-LED Gas sensor array Low power consumption Metal decoration Real-time detection

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Real-Time Tunable Gas Sensing Platform Based on SnO2 Nanoparticles Activated by Blue Micro-Light-Emitting Diodes

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Nano-Micro Letters 2024年第12期 111-127页

作者： Gi Baek Nam Jung-El Ryu Tae Hoon Eom Seung Ju Kim Jun min Suh Seungmin Lee Sungkyun Choi Cheon Woo Moon Seon Ju park Soo min Lee Byungsoo Kim Sung Hyuk park Jin Wook Yang Sangjin min Sohyeon park Sung Hwan Cho Hyuk Jin Kim Sang Eon Jun Tae Hyung Lee yeong Jae Kim Jae Young Kim Young Joon Hong Jong-In Shim Hyung-Gi Byun Yongjo park Inkyu park Sang-Wan Ryu Ho Won Jang Department of Materials Science and Engineering Seoul National University Research Laboratory of Electronics Department of Mechanical Engineering Massachusetts Institute of Technology ming Hsieh Department of Electrical and Computer Engineering University of Southern California Department of Display Materials Engineering Soonchunhyang University Department of Photonics and Nanoelectronics BK21 FOUR ERICA-ACE Center Hanyang University ERICA Department of Nanotechnology and Advanced Materials Engineering Sejong University Department of Electronics Information and Communication Engineering Kangwon National University Advance Institute of Convergence Technology Seoul National University Department of Mechanical Engineering Korea Advanced Institute of Science and Technology Department of Physics Chonnam National University

Micro-light-emitting diodes（μLEDs） have gained significant interest as an activation source for gas sensors owing to their advantages, including room temperature operation and low power consumption. However, despite these benefits, challenges still exist such as a limited range of detectable gases and slow response. In this study, we present a blue μLED-integrated light-activated gas sensor array based on SnO2nanoparticles（NPs） that exhibit excellent sensitivity, tunable selectivity, and rapid detection with micro-watt level power consumption. The optimal power for μLED is observed at the highest gas response, supported by finite-difference time-domain simulation. Additionally, we first report the visible light-activated selective detection of reducing gases using noble metal-decorated SnO2NPs. The noble metals induce catalytic interaction with reducing gases, clearly distinguishing NH3, H2, and C2H5OH. Real-time gas monitoring based on a fully hardwareimplemented light-activated sensing array was demonstrated, opening up new avenues for advancements in light-activated electronic nose technologies.

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A pilot clinical study to evaluate feasibility of using single patient classifier as a prognostic test in stage Ⅱ-Ⅲ gastric cancer patients

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Chinese Journal of Cancer Research 2024年第4期36卷 368-378页

作者： Ji yeong An Sung Eun Oh Soomin Ahn Hyoung-II Kim Yoo min Kim minah Cho Keun Won Ryu Hong Man Yoon Young Kyu park In Gyu Kwon Sung Hoon Noh Kyung Hee Lee In Cho Myoung Won Son Jong Won Kim Young-Woo Kim Department of Surgery Samsung Medical Center Sungkyunkwan University School of Medicine Department of Pathology and Translational Genomics Samsung Medical Center Sungkyunkwan University School of Medicine Department of Surgery Yonsei University College of Medicine Gastric Cancer Center Yonsei Cancer CenterYonsei University Health System Center for Gastric Cancer National Cancer Center Department of Surgery Chonnam National University Hwasun Hospital Chonnam National University College of Medicine Department of Surgery Gangnam Severance Hospital Yonsei University College of Medicine Department of Hematology-Oncology Yeungnam University Medical Center Department of Surgery Soonchunhyang University College of Medicine Department of Surgery Soonchunhyang University Cheonan Hospital Soonchunhyang University College of Medicine Department of Surgery Chung-Ang University Hospital Chung-Ang University College of Medicine

Objective: Precision medicine approaches emphasize the importance of reliable prognostic tools for guiding individualized therapy decisions. In this study, we evaluated the clinical feasibility of the single patient classifier(SPC) test, a new clinical-grade prognostic assay, in stage Ⅱ-Ⅲ gastric cancer ***: A prospective multicenter study was conducted, involving 237 patients who underwent gastrectomy between September 2019 and August 2020 across nine hospitals. The SPC test was employed to stratify patients into risk groups, and its feasibility and performance were evaluated. The primary endpoint was the proportion of the cases in which the test results were timely delivered before selecting postoperative treatment. Furthermore, 3-year disease-free survivals of risk groups were ***: The SPC test met the primary endpoint criteria. The 99.5% of SPC tests were timely delivered to hospitals before the postoperative treatment started. In a clinical setting, the median time from the specimen transfer to laboratory to the result delivery to hospital was 4 d. Furthermore, 3-year disease-free survivals were significantly different between risk groups classified with SPC ***: This study highlights the SPC test's feasibility in offering crucial information timely delivered for making informed decisions regarding postoperative treatment strategies. It also provides evidence to support the implementation of a future prospective clinical trial aimed at evaluating the clinical utility of the SPC test in guiding personalized treatment decisions for gastric cancer patients.

关键词： Prognostic test adjuvant chemotherapy advanced gastric cancer feasibility gastrectomy

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Polymer donors with hydrophilic side-chains enabling efficient and thermally-stable polymer solar cells by non-halogenated solvent processing

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Nano Research Energy 2024年第1期3卷 19-29页

作者： Soodeok Seo Jun-Young park Jin Su park Seungjin Lee Do-yeong Choi Yun-Hi Kim Bumjoon J.Kim Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology(KAIST)Daejeon 34141Republic of Korea Department of Materials Engineering and Convergence Technology and ERI Gyeongsang National UniversityJinju 52828Republic of Korea Advanced Energy Materials Research Center Korea Research Institute of Chemical Technology(KRICT)Daejeon 34114Republic of Korea Department of Chemistry and ERI Gyeongsang National UniversityJinju 52828Republic of Korea

Polymer solar cells(PSCs)with high power conversion efficiency(PCE)and environment-friendly fabrication are the main requirements enabling their production in industrial *** the use of non-halogenated solvent processing is inevitable for the PSC fabrication,it significantly reduces the processability of polymer donors(PDS)and small-molecule acceptors(SMAs).This often results in unoptimized blend morphology and limits the device *** address this issue,hydrophilic oligoethylene glycol(OEG)side-chains are introduced into a PD(2EG)to enhance the molecular compatibility between the PD and L8-BO *** 2EG PD induces higher crystallinity and alleviates phase separation with the SMA compared to the reference PD(PM7)with hydrocarbon ***,the 2EG-based PSCs exhibit a higher PCE(15.8%)than the PM7-based PSCs(PCE=14.4%)in the ortho-xylene based ***,benefitted from the reduced phase separation and increased crystallinity of 2EG PDS,the 2EG-based PSCs show enhanced thermal stability(84%of initial PCE after 120 h heating)compared to that of the PM7-based PSCs(60%of initial PCE after 120 h heating).This study demonstrates the potential of OEG side-chain-incorporated materials in developing efficient,stable,and eco-friendly PSCs.

关键词： polymer solar cell polymer donor OEG side-chain non-halogenated solvent process side-chain engineering

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Highly Efficient,Dual‑Functional Self‑Assembled Electrospun Nanofiber Filters for Simultaneous PM Removal and On‑Site Eye‑Readable Formaldehyde Sensing

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Advanced Fiber Materials 2023年第3期5卷 1088-1103页

作者： Jin yeong Song Seongmin Kim Jaeseong park Sang min park School of Mechanical Engineering Pusan National University63‑2 Busan University‑RoGeumjeong‑GuBusan 46241South Korea

Air pollution containing particulate matter(PM)and volatile organic compounds has caused magnificent burdens on indi-vidual health and global *** advances in highly efficient or multifunctional nanofiber filters have been achieved,many existing filters can only deal with one type of air pollutant,such as capturing PM or absorbing and detecting toxic ***,highly efficient,dual-functional,self-assembled electrospun nanofiber(SAEN)filters were developed for simultaneous PM removal and onsite eye-readable formaldehyde sensing fabricated on a commercial fabric *** the use of an electrolyte solution containing a formaldehyde-sensitive colorimetric agent as a collector during electrospinning,the one-step fabrication of the dual-functional SAEN filter on commercial masks,such as a fabric mask and a daily dispos-able mask,was *** electrolyte solution also allowed the uniform deposition of electrospun nanofibers,thereby achieving the high efficiency of PM filtration with an increased quality factor up to twice that of commercial *** SAEN filter enabled onsite and eye-readable formaldehyde gas detection by changing its color from yellow to red under a 5 ppm concentrated formaldehyde gas *** repetitive fabrication and detachment of the SAEN filter on a fabric mask minimized the waste of the mask while maintaining high filtration efficiency by replenishing the SAEN filters and reusing the fabric *** the dual functionality of SAEN filters,this process could provide new insights into design-ing and developing high performance and dual-functional electrospun nanofiber filters for various applications,including individual protection and indoor purification applications.

关键词： Electrospinning Nanofiber Self-assembly PM removal Formaldehyde sensing

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