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Topic highlight on texture and color enhancement imaging in gastrointestinal diseases

World Journal of Gastroenterology 2024年第14期30卷 1934-1940页

作者： osamu Toyoshima Toshihiro Nishizawa Keisuke Hata Department of Gastroenterology Toyoshima Endoscopy ClinicTokyo 157-0066Japan Department of Gastroenterology and Hepatology International University of Health and WelfareNarita HospitalNarita 286-8520Japan Department of Gastroenterology Nihonbashi Muromachi Mitsui Tower Midtown ClinicTokyo 103-0022Japan

Olympus Corporation developed texture and color enhancement imaging(TXI)as a novel image-enhancing endoscopic *** topic highlights a series of hot-topic articles that investigated the efficacy of TXI for gastrointestinal disease identification in the clinical setting.A randomized controlled trial demonstrated improvements in the colorectal adenoma detection rate(ADR)and the mean number of adenomas per procedure(MAP)of TXI compared with those of white-light imaging(WLI)observation(58.7%vs 42.7%,adjusted relative risk 1.35,95%CI:1.17-1.56;1.36 vs 0.89,adjusted incident risk ratio 1.48,95%CI:1.22-1.80,respectively).A cross-over study also showed that the colorectal MAP and ADR in TXI were higher than those in WLI(1.5 vs 1.0,adjusted odds ratio 1.4,95%CI:1.2-1.6;58.2%vs 46.8%,1.5,1.0-2.3,respectively).A randomized controlled trial demonstrated non-inferiority of TXI to narrow-band imaging in the colorectal mean number of adenomas and sessile serrated lesions per procedure(0.29 vs 0.30,difference for non-inferiority-0.01,95%CI:-0.10 to 0.08).A cohort study found that scoring for ulcerative colitis severity using TXI could predict relapse of ulcerative colitis.A cross-sectional study found that TXI improved the gastric cancer detection rate compared to WLI(0.71%vs 0.29%).A cross-sectional study revealed that the sensitivity and accuracy for active Helicobacter pylori gastritis in TXI were higher than those of WLI(69.2%vs 52.5%and 85.3%vs 78.7%,res-pectively).In conclusion,TXI can improve gastrointestinal lesion detection and qualitative ***,further studies on the efficacy of TXI in clinical practice are required.

关键词： Endoscopy Texture and color enhancement imaging White-light imaging Narrow-band imaging Colorectal neoplasm Gastric cancer Adenoma Ulcerative colitis Helicobacter infections Colonoscopy

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Healthcare Needs of the Elderly People over 85 Years Living Alone on the Island Area in Japan: A Descriptive Study

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Health 2018年第4期10卷 516-530页

作者： osamu hiramitsu Michiko Moriyama Kanae Osaki Ritsuko Sakamoto Megumi Sakamoto Shoko Maeno Hidemi Sasaki Katm Ehsanul Huq Md Moshiur Rahman Graduate School of Biomedical & Health Sciences Hiroshima University Hiroshima Japan Department of Health and Social Welfare Kure City Municipality Hiroshima Japan Graduate School of Nursing Hiroshima Bunka Gakuen University Hiroshima Japan

Background: Japan has the highest aging people accounting 33.8 million with the rate of 26.7% in 2015. Although, public long-term care insurance services support people age 40 years and above, most of the users are 85 years and over due to their more vulnerability for getting sick. This study describes the physical, mental and social status of the elderly people aged 85 years and over, who were living alone at home. Method: A cross-sectional study was conducted between November 2016 and March 2017 in the island of Kure city, Hiroshima, Japan. A structured questionnaire and scales were used for data collection and documentation of physical measurements. Descriptive analysis was used. Result: A total of 190 subjects were participated, and the data were analyzed. The age range of the subjects was 85 to 98 years, and 68.4% of them were 85 to 89 years old. Male and female ratio was 21.6% vs 78.4%. Subjects of 17.4% continued their occupation at the time of the study period and most of them involved in agricultural work (93.9%). A certain percentage of the subjects had abnormal physical, mental and social difficulties and need additional support from family, friends, relatives, and community. Conclusion: Early detection and intervention such as disease management, nutritional support, and human support are required. The findings suggested policy makers to predict the burden and provide necessary care for these elderly people. It is necessary to aware family, friends, relatives, community and government supporting staff to provide information on correct recognition and usages of long-term care insurance services for these elder people.

关键词： Elderly Living Alone Long-Term Care Insurance Japan

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Machine learning algorithm partially reconfigured on FPGA for an image edge detection system

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Journal of Electronic Science and Technology 2024年第2期22卷 48-68页

作者： Gracieth Cavalcanti Batista Johnny Oberg osamu Saotome Haroldo F.de Campos Velho Elcio Hideiti Shiguemori Ingemar Soderquist Division of Electronic and Embedded Systems KTH Royal Institute of TechnologyStockholm 16440Sweden Electronic Engineering Division Aeronautics Institute of TechnologySao Josédos Campos SP 12228-900Brazil Laboratory of Applied Computing and Mathematics National Institute for Space ResearchSao Josédos Campos SP 12227-900Brazil Department of C4ISR Institute of Advanced StudiesSao Josédos Campos SP 12228-001Brazil Saab AB Linkoping 58188Sweden

Unmanned aerial vehicles(UAVs)have been widely used in military,medical,wireless communications,aerial surveillance,*** key topic involving UAVs is pose estimation in autonomous navigation.A standard procedure for this process is to combine inertial navigation system sensor information with the global navigation satellite system(GNSS)***,some factors can interfere with the GNSS signal,such as ionospheric scintillation,jamming,or *** alternative method to avoid using the GNSS signal is to apply an image processing approach by matching UAV images with georeferenced *** a high effort is required for image edge *** a support vector regression(SVR)model is proposed to reduce this computational load and processing *** dynamic partial reconfiguration(DPR)of part of the SVR datapath is implemented to accelerate the process,reduce the area,and analyze its granularity by increasing the grain size of the reconfigurable *** show that the implementation in hardware is 68 times faster than that in *** architecture with DPR also facilitates the low power consumption of 4 mW,leading to a reduction of 57%than that without *** is also the lowest power consumption in current machine learning hardware ***,the circuitry area is 41 times *** with Gaussian kernel shows a success rate of 99.18%and minimum square error of 0.0146 for testing with the planning *** system is useful for adaptive applications where the user/designer can modify/reconfigure the hardware layout during its application,thus contributing to lower power consumption,smaller hardware area,and shorter execution time.

关键词： Dynamic partial reconfiguration(DPR) Field programmable gate array(FPGA)implementation Image edge detection Support vector regression(SVR) Unmanned aerial vehicle(UAV) pose estimation

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Glutathione-depleted cyclodextrin pseudo-polyrotaxane nanoparticles for anti-inflammatory oxaliplatin(Ⅳ) prodrug delivery and enhanced colorectal cancer therapy

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Chinese Chemical Letters 2024年第4期35卷 280-286页

作者： Wenjia Wang Xingyue He Xiaojie Wang Tiantian Zhao osamu Muraoka Genzoh Tanabe Weijia Xie Tianjiao Zhou Lei Xing Qingri Jin Hulin Jiang State Key Laboratory of Natural Medicines China Pharmaceutical UniversityNanjing 210009China Faculty of Pharmacy Kinki University HigashiosakaOsaka 577-8502Japan State Key Laboratory of Natural Medicines(SKLNM)and Department of Medicinal Chemistry School of PharmacyChina Pharmaceutical UniversityNanjing 210009China School of Pharmacy Hangzhou Medical CollegeHangzhou 311399China College of Pharmacy Yanbian UniversityYanji 133002China

Oxaliplatin(Oxa) is the first-line chemotherapeutic drug for the treatment of colorectal cancer(CRC). However, long-term Oxa chemotherapy can induce inflammation and increase the levels of cyclooxygenase-2(COX-2) and prostaglandin E2(PGE2), which can promote tumor metastasis. Moreover,high glutathione(GSH) levels in CRC cells significantly reduce Oxa sensitivity and seriously restrict the clinical application of Oxa. Herein, an Oxa(Ⅳ) prodrug with anti-inflammatory properties(desmethyl naproxe, DN) and GSH-depleting cyclodextrin pseudo-polyrotaxane carriers were prepared and further self-assembled into micellar nanoparticles(designated DNPt@PPRI). The relesae of DN from DNPt@PPRI can reduce the level of PGE2 to inhibit inflammation and tumor metastasis by decreasing COX-2 protein,and also synergize with Oxa to inhibit tumor. More importantly, GSH depletion can reduce the detoxification of Oxa and further enhance chemotherapy-induced apoptosis. DNPt@PPRI have a good GSH depletion ability to enhance the sensitivity of Oxa, indicating a potential in the synergistic chemotherapy and chemo-sensitization of colorectal cancer.

关键词： Oxaliplatin Glutathione depletion Tetravalent platinum prodrug Synergistic therapy Colorectal cancer

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Preoperative albumin-bilirubin score and liver resection percentage determine postoperative liver regeneration after partial hepatectomy

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World Journal of Gastroenterology 2024年第14期30卷 2006-2017页

作者： Kazuhiro Takahashi Masahiko Gosho Yoshihiro Miyazaki Hiromitsu Nakahashi osamu Shimomura Kinji Furuya Manami Doi Yohei Owada Koichi Ogawa Yusuke Ohara Yoshimasa Akashi Tsuyoshi Enomoto Shinji Hashimoto Tatsuya Oda Department of Gastrointestinal and Hepatobiliary-Pancreatic Surgery University of TsukubaTsukuba 3058-575IbarakiJapan Department of Biostatistics University of TsukubaTsukuba 3058-575IbarakiJapan

BACKGROUND The success of liver resection relies on the ability of the remnant liver to *** of the knowledge regarding the pathophysiological basis of liver regeneration comes from rodent studies,and data on humans are ***,there is limited knowledge about the preoperative factors that influence postoperative *** To quantify postoperative remnant liver volume by the latest volumetric software and investigate perioperative factors that affect posthepatectomy liver *** A total of 268 patients who received partial hepatectomy were *** were grouped into right hepatectomy/trisegmentectomy(RH/Tri),left hepa-tectomy(LH),segmentectomy(Seg),and subsegmentectomy/nonanatomical hepatectomy(Sub/Non)*** regeneration index(RI)and late rege-neration rate were defined as(postoperative liver volume)/[total functional liver volume(TFLV)]×100 and(RI at 6-months-RI at 3-months)/RI at 6-months,*** lower 25th percentile of RI and the higher 25th percentile of late regeneration rate in each group were defined as“low regeneration”and“delayed regeneration”.“Restoration to the original size”was defined as regeneration of the liver volume by more than 90%of the TFLV at 12 months *** The numbers of patients in the RH/Tri,LH,Seg,and Sub/Non groups were 41,53,99 and 75,*** RI plateaued at 3 months in the LH,Seg,and Sub/Non groups,whereas the RI increased until 12 months in the RH/Tri *** to our multivariate analysis,the preoperative albumin-bilirubin(ALBI)score was an independent factor for low regeneration at 3 months[odds ratio(OR)95%CI=2.80(1.17-6.69),P=0.02;per 1.0 up]and 12 months[OR=2.27(1.01-5.09),P=0.04;per 1.0 up].Multivariate analysis revealed that only liver resection percentage[OR=1.03(1.00-1.05),P=0.04]was associated with delayed ***,multivariate analysis demonstrated that the preoperative ALBI score[OR=2.63(1.00-1.05),P=0.02;per 1.

关键词： Liver regeneration Albumin-bilirubin score Liver resection percentage Partial hepatectomy Human Regeneration index

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Inverse relationship between platelet Akt activity and hippocampal atrophy:A pilot case-control study in patients with diabetes mellitus

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World Journal of Clinical Cases 2024年第2期12卷 302-313页

作者： Haruhiko Tokuda Takamitsu Hori Daisuke Mizutani Tomoyuki Hioki Kumi Kojima Takashi Onuma Yukiko Enomoto Tomoaki Doi Rie Matsushima-Nishiwaki Shinji Ogura Hiroki Iida Toru Iwama Takashi Sakurai osamu Kozawa Department of Metabolic Research Research InstituteNational Center for Geriatrics and GerontologyObu 474-8511Japan Department of Clinical Laboratory National Center for Geriatrics and GerontologyObu 474-8511Japan Department of Pharmacology Gifu University Graduate School of MedicineGifu 501-1194Japan Department of Neurosurgery Gifu University Graduate School of MedicineGifu 501-1194Japan Department of Dermatology Central Japan International Medical CenterMinokamo 505-8510Japan Department of Anesthesiology and Pain Medicine Gifu University Graduate School of MedicineGifu 501-1194Japan Department of Emergency Medicine Faculty of MedicineUniversity of ToyamaToyama 930-0194Japan Department of Emergency and Disaster Medicine Gifu University Graduate School of MedicineGifu 501-1194Japan Research Institute National Center for Geriatrics and GerontologyObu 474-8511Japan

BACKGROUND Akt plays diverse roles in *** is involved in the pathogenesis of type 2 diabetes mellitus(T2DM),which is caused by insulin *** also plays a vital role in human platelet ***,the hippocampus is closely associated with memory and learning,and a decrease in hippocampal volume is reportedly associated with an insulin-resistant phenotype in T2DM patients without *** To investigate the relationship between Akt phosphorylation in unstimulated platelets and the hippocampal volume in T2DM *** Platelet-rich plasma(PRP)was prepared from the venous blood of patients with T2DM or age-matched *** pellet lysate of the centrifuged PRP was subjected to western blotting to analyse the phosphorylation of Akt,p38 mitogen-activated protein(MAP)kinase and glyceraldehyde 3-phosphate dehydrogenase(GAPDH).Phosphorylation levels were quantified by densitometric *** volume was analysed using a voxel-based specific regional analysis system for Alzheimer’s disease on magnetic resonance imaging,which proposes the Z-score as a parameter that reflects hippocampal *** The levels of phosphorylated Akt corrected with phosphorylated p38 MAP kinase were inversely correlated with the Z-scores in the T2DM subjects,whereas the levels of phosphorylated Akt corrected with GAPDH were ***,this relationship was not observed in the control *** These results suggest that an inverse relationship may exist between platelet Akt activation and hippocampal atrophy in T2DM *** findings provide insight into the molecular mechanisms underlying T2DM hippocampal atrophy.

关键词： Akt Platelet Hippocampal atrophy Magnetic resonance imaging Diabetes mellitus

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Study of the Effect of Acetic Acid and Phosphate on Copper Corrosion by Immersion Tests

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Materials Sciences and Applications 2024年第1期15卷 15-23页

作者： Yuna Yamaguchi Kaho Sugiura Toyohiro Arima Fuka Takahashi Itaru Ikeda Yutaka Yamada osamu Sakurada Department of Chemistry and Biomolecular Science Faculty of Engineering Gifu University Gifu Japan Dai-Dan Co. Ltd. Saitama Japan Daiwa Techno Co. Ltd. Gifu Japan

It was reported that hemispheric corrosion occurred in copper tubes in an acetic acid environment. When hemispheric corrosion occurred, corrosion could easily progress if water then flowed into the copper pipe, and countermeasures were needed. Therefore, we studied the copper corrosion caused by acetic acid. The present work investigated the relationship between the corrosion form of copper and acetic acid concentration using phosphorous-deoxidized copper, and reported that hemispherical corrosion was observed at acetic acid concentrations of 0.01 to 1 vol.% (0.002 to 0.2 mol·L-1) in the immersion test. In this study, the effects of acetic acid and phosphate on copper corrosion were examined using oxygen-free copper in immersion tests. The results suggested that different concentrations of phosphate in acetic acid solutions and the presence or absence of acetic acid and phosphate affected the corrosion of copper, resulting in different corrosion forms and corrosion progress.

关键词： Acetic Acid Phosphate Oxygen-Free Copper Hemispherical Corrosion Ant-Nest Corrosion

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SPERA Hydrogen System^(TM)by LOHC-MCH Method for Massive Hydrogen Storage and Transportation

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Journal of Environmental Science and Engineering(A) 2024年第2期13卷 50-60页

作者： Yoshimi Okada Kaji Naohiro osamu Ikeda Kenichi Imagawa Hironori Kawai Masashi Nagai Yasuhiro Inoue Frontier Business Division Chiyoda Corporation4-6-2 Minatomirai Nishi-kuYokohama 2208765Japan Hydrogen Business Department Chiyoda Corporation4-6-2 Minatomirai Nishi-kuYokohama 2208765Japan R&D Center Chiyoda Corporation3-13 Moriya-cho Kanagawa-kuYokohama 2208765Japan Technology Development Department Chiyoda Corporation4-6-2 Minatomirai Nishi-kuYokohama 2208765Japan

Expanding the hydrogen energy utilization is essential for decarbonization,and the commercialization of hydrogen energy carrier systems that can“store”and“transport”hydrogen in a large scale is *** organic chemical hydride method incorporates hydrogen atoms into the molecular structure of a LOHC(Liquid Organic Hydrogen Carrier)to store and transport hydrogen in a liquid state under normal temperature and pressure,and is a highly safe method with low business *** has been developing the technology since 2002,completed a pilot demonstration in 2014 and named it the SPERA Hydrogen^(TM) System,and successfully completed an international supply chain demonstration that transports hydrogen from Brunei to Japan in a large scale in 2020,moving to the commercialization ***,Chiyoda is conducting feasibility studies with a number of domestic and foreign companies with the aim of commercializing the system as soon as *** this paper,outline,features,development status and our efforts in commercialization of SPERA HydrogenTM System are introduced.

关键词： Hydrogen carrier LOHC Methylcyclohexane MCH toluene

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Tumor size discrepancy between endoscopic and pathological evaluations in colorectal endoscopic submucosal dissection

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World Journal of Gastrointestinal Endoscopy 2024年第3期16卷 136-147页

作者： Takeshi Onda osamu Goto Toshiaki Otsuka Yoshiaki Hayasaka Shun Nakagome Tsugumi Habu Yumiko Ishikawa Kumiko Kirita Eriko Koizumi Hiroto Noda Kazutoshi Higuchi Jun Omori Naohiko Akimoto Katsuhiko Iwakiri Department of Gastroenterology Nippon Medical SchoolGraduate School of MedicineBunkyo-ku 113-8603TokyoJapan Endoscopy Center Nippon Medical School HospitalBunkyo-ku 113-8603TokyoJapan Department of Hygiene and Public Health Nippon Medical SchoolBunkyoku 113-8603TokyoJapan Center for Medical Education Nippon Medical SchoolBunkyo-ku 113-8603TokyoJapan

BACKGROUND Tumor size impacts the technical difficulty and histological curability of colorectal endoscopic submucosal dissection(ESD);however,the preoperative evaluation of tumor size is often different from histological *** influential factors on failure to obtain an accurate tumor size evaluation could help prepare optimal conditions for safer and more reliable *** This was a retrospective study conducted at a single institution.A total of 377 lesions removed by colorectal ESD at our hospital between April 2018 and March 2022 were *** first assessed the difference in size with an absolute per-centage of the scaling ***,we compared the clinicopatho-logical characteristics of the correct scaling group(>-33%and33%),which was further subdivided into the underscaling group(-33%or less of the discrepancy)and overscaling group(33%or more of the discrepancy),*** secondary outcome measures,parameters on size estimation were compared between the underscaling and correct scaling groups,as well as between the overscaling and correct scaling ***,multivariate analysis was performed in terms of the following relevant parameters on size estimation:Pathological size,location,and possible influential factors(P<0.1)in the univariate *** The mean of absolute percentage in the scaling discordance was 21%,and 91 lesions were considered to be incorrectly estimated in *** incorrect scaling was significantly remarkable in larger lesions(40 mm vs 28 mm;P<0.001)and less experience(P<0.001),and these two factors were influential on the underscaling(75 lesions;P<0.001).Conversely,compared with the correct scaling group,16 lesions in the overscaling group were significantly small(20 mm vs 28 mm;P<0.001),and the small lesion size was influential on the overscaling(P=0.002).CONCLUSION Lesions indicated for colorectal ESD tended to be underestimate

关键词： Endoscopic submucosal dissection Colorectal tumor Tumor size Size estimation Size discrepancy

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Study on Distribution of Four Pseudomonas Species in Living Environment Using Multiplex PCR

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Open Journal of Stomatology 2024年第2期14卷 77-86页

作者： Sachiyo Hayashi Koji Umezawa osamu Tsuzukibashi Akira Fukatsu Mana Fuchigami Chiaki Komine Hiroshi Yamamoto Mio Hagiwara-Hamano Yukiko Iizuka Satoshi Uchibori Masanobu Wakami Hiroshi Murakami Taira Kobayashi Masahiko Fukumoto Takato Nomoto Department of Special Needs Dentistry Nihon University School of Dentistry at Matsudo Chiba Japan Department of Laboratory Medicine for Dentistry for the Compromised Patient Nihon University School of Dentistry at Matsudo Chiba Japan Department of Oral Surgery Nihon University School of Dentistry at Matsudo Chiba Japan Department of Fixed Prosthodontics Nihon University School of Dentistry at Matsudo Chiba Japan Department of Oral Implantology Nihon University School of Dentistry at Matsudo Chiba Japan

Purpose: The genus Pseudomonas is a ubiquitous microorganism frequently detected from immunocompromised patients. The inherent resistance to numerous antimicrobial agents contributes to the opportunistic character of this pathogen exhaustive monitoring of this pathogen is considered of critical importance to public health organizations. The reliable identification method able to distinguish genetic close Pseudomonas species is needed, because these organisms are difficult to differentiate by phenotypic or biochemical methods. The purpose of the present study was to design species-specific primers in order to identify and detect four Pseudomonas species which are frequently detected from the human oral cavities, and to investigate the distribution of these organisms in the living environment using a multiplex PCR. Methods: Polymerase chain reaction (PCR) primers were designed based on partial sequences of the rpoD gene of four Pseudomonas species. Swab samples were collected from fifty washstands, and the distribution of Pseudomonas species was investigated using a conventional PCR at genus level and a multiplex PCR at species level. Results: Multiplex PCR method developed in this study was able to distinguish four Pseudomonas species clearly. The genus Pseudomonas was detected from all samples (100%), whereas P. putida, P, aeruginosa, P. stutzeri and P. fluorescens were detected at 44%, 8%, 4% and 2% in fifty swab samples, respectively. Conclusion: Our developed one-step multiplex PCR method is accurate, specific, cost-effective, time-saving, and works without requiring DNA extraction. It was indicated that washstands were the uninhabitable environment for P. putida, P, aeruginosa, P. stutzeri and P. fluorescens.

关键词： Genus Pseudomonas Multiplex PCR Living Environment

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