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Validity of fatty liver prediction scores for diagnosis of fatty liver by Fibroscan

Hepatobiliary & Pancreatic Diseases International 2024年第4期23卷 353-360页

作者： Seogsong Jeong Sun Jae Park Seong Kyun Na Sang Min Park byung-cheol Song Yun Hwan Oh Department of Biomedical Sciences Seoul National University Graduate SchoolSeoul 03080Korea Department of Biomedical Informatics CHA University School of MedicineCHA UniversitySeongnam 13488Korea Department of Internal Medicine Inje University College of MedicineSeoul 50834Korea Department of Family Medicine Seoul National University HospitalSeoul National University College of MedicineSeoul 03080Korea Department of Internal Medicine Jeju National University HospitalJeju National University College of MedicineJeju 63241Korea Department of Family Medicine Jeju National University HospitalJeju National University College of MedicineJeju 63241Korea Department of Family Medicine Chung-Ang University Gwangmyeong HospitalChung-Ang University College of MedicineGwangmyeong 14353Korea

Background:The Korea National Health and Nutrition Examination Survey nonalcoholic fatty liver disease(K-NAFLD)score was recently developed with the intent to operationally define nonalcoholic fatty liver disease(NAFLD).However,there remained an external validation that confirmed its diagnostic performance,especially in patients with alcohol consumption or hepatitis virus ***:Diagnostic accuracy of the K-NAFLD score was evaluated in a hospital-based cohort consisting of 1388 participants who received Fibroscan®.Multivariate-adjusted logistic regression models and the contrast estimation of receiver operating characteristic curves were used for validation of the K-NAFLD score,fatty liver index(FLI),and hepatic steatosis index(HSI).Results:K-NAFLD-moderate[adjusted odds ratio(aOR)=2.53,95%confidence interval(CI):1.13-5.65]and K-NAFLD-high(aOR=4.14,95%CI:1.69-10.13)groups showed higher risks of fatty liver compared to the K-NAFLD-low group after adjustments for demographic and clinical characteristics,and FLI-moderate and FLI-high groups revealed aORs of 2.05(95%CI:1.22-3.43)and 1.51(95%CI:0.78-2.90),*** addition,the HSI was less predictive for Fibroscan®-defined fatty *** K-NAFLD and FLI also demonstrated high accuracy in the prediction of fatty liver in patients with alcohol consumption and chronic hepatitis virus infection,and the adjusted area under curve values were comparable between K-NAFLD and ***:Externally validation of the K-NAFLD and FLI showed that these scores may be a useful,noninvasive,and non-imaging modality for the identification of fatty *** addition,these scores also predicted fatty liver in patients with alcohol consumption and chronic hepatitis virus infection.

关键词： Nonalcoholic fatty liver disease Fatty liver index Hepatic steatosis index

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Effect of music on colonoscopy performance: A propensity scorematched analysis

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World Journal of Gastrointestinal Endoscopy 2023年第5期15卷 397-406页

作者： Eun Jeong Choi Sam Ryong Jee Sang Heon Lee Jun Sik Yoon Seung Jung Yu Jong Hyun Lee Han Byul Lee Sang Wook Yi Myeong Pyo Kim byung cheol chung Hong Sub Lee Department of Internal Medicine Inje University College of MedicineBusan Paik HospitalBusan 47392South Korea Department of Public Health Ajou University Graduate School of Public HealthSuwon 16499South Korea Department of Preventive Medicine and Public Health Catholic Kwandong University College of MedicineGangneung 25601South Korea

BACKGROUND Music has been used to reduce stress and improve task performance during medical *** To assess the effects of music on colonoscopy performance *** We retrospectively reviewed patients who underwent colonoscopy performed by four endoscopists with popular *** performance outcomes,such as insertion time,adenoma detection rate(ADR),and polyp detection rate(PDR),were compared between the music and non-music *** reduce selection bias,propensity score matching was *** After one-to-one propensity score matching,169 colonoscopies were selected from each *** significant differences in insertion time(4.97 vs 5.17 min,P=0.795)and ADR(39.1%vs 46.2%,P=0.226)were found between the two *** analysis showed that the insertion time(3.6 vs 3.8 min,P=0.852)and ADR(51.1%vs 44.7%,P=0.488)did not significantly differ between the two groups in ***,in trainees,PDR(46.9%vs 66.7%,P=0.016)and ADR(25.9%vs 47.6%,P=0.006)were significantly lower in the music than in the nonmusic *** The current study found that listening to music during colonoscopy did not affect procedure ***,it suggested that music may distract trainees from appropriately detecting adenomas and polyps.

关键词： Music Colonoscopy Performance Adenoma Colonic polyps Cecal insertion time

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Effects of heavy rainfall on the composition of airborne bacterial communities

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Frontiers of Environmental Science & Engineering 2018年第2期12卷 117-126页

作者： Gwang Il Jang chung Yeon Hwang byung cheol Cho Microbial Oceanography Laboratory School of Earth and Environmental Sciences and Research Institute of Oceanography Seoul National University Seoul 08826 Republic of Korea Division of Polar Life Sciences Korea Polar Research Institute Incheon 21990 Republic of Korea

Wet deposition scavenges particles and particle-associated bacteria from the air column, but the impact of raindrops on various surfaces on Earth causes emission of surface-associated bacteria into the air column. Thus, after rainfall, these two mechanisms are expected to cause changes in airborne bacterial community composition （BCC）. In this study, aerosol samples were collected at a suburban site in Seoul, Korea before and after three heavy rainfall events in April, May, and July 2011. BCC was investigated by pyrosequencing the 16S rRNA gene in aerosol samples. Interestingly, the relative abundance of non-spore forming Actinobacteria operational taxonomic units （OTUs） was always higher in post-rain aerosol samples. In particular, the absolute and relative abundances of airborne Propionibacteriaceae always increased after rainfall, whereas those of airborne Firmicutes, including Carnobacteriaceae and Clostridiales, consistently decreased. Marine bacterial sequences, which were temporally important in aerosol samples, also decreased after rainfall events. Further, increases in pathogen-like sequences were often observed in post-rain air samples. Rainfall events seemed to affect airborne BCCs by the combined action of the two mechanisms, with potentially adverse effects on human and plant health.

关键词： Aerosol BacteriaCommunity composition PyrosequencingRain

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Comparison of the clinical efficacy of medical treatment of symptomatic benign prostatic hyperplasia between normal and obese patients

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Asian Journal of Andrology 2011年第5期13卷 728-731页

作者： Seung Hwan Lee cheol Young Oh Kyung Kgi Park Mutt Su chung Se Jeong Yoo byung Ha chung Department of Urology Yonsei University Health System Seoul Korea Department of Urology Hallym University Anyang 431-070 Chuncheon

We aimed to investigate the difference in efficacy of medical treatment of symptomatic benign prostatic hyperplasia （BPH） between normal and obese patients with BPH; obesity was determined by either body mass index （BMI） or waist circumference （WC）. In this 12-week prospective observational study, a total of 175 patients aged ≥40 years with International Prostate Symptom Scores （IPSS） ≥12 points and prostate volume≥20 ml were prospectively enrolled. The patients were divided into two groups according to BMI or WC. Patients received the doxazosin gastrointestinal therapeutic system （GITS） at a dose of 4 mg once per day for 12 weeks. The changes from baseline in the IPSS, maximal urinary flow rate （Qmax）, post-void residual volume, quality of life （QoL） scores and adverse events （AEs） were analysed. Of the 175 enrolled patients, 132 completed the study. Sixty-seven patients had BMI 〉23 kg m-2, and 43 had WC 〉90 cm. Obese patients represented by WC 〉90 cm or BMI≥ 23 kg m-2 had a significantly greater prostate volume compared with non-obese patients at baseline. Total IPSS was significantly higher in the WC 〉90 cm group compared to the WC ≤ 90 cm group. Total I PSS was positively correlated with prostate volume （P=-0.031） and WC （P=0.045）. All groups showed significant improvements in total IPSS and QoL at 12 weeks. However, the improvement of total IPSS was greater in the high-BMI and high-WC groups. The most frequent AE was dizziness （n= 13）, and it was significantly lower in the obese BPH patients. Obesity was associated with increased prostate volume and lower urinary tract symptoms. Alpha-blockers appear to be efficacious for controlling symptoms, especially in obese men.

关键词： Alpha-blocker benign prostatic hyperplasia body mass index prostate waist circumference

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A Power-Aware Branch Predictor by Accessing the BTB Selectively

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Journal of Computer Science & Technology 2005年第5期20卷 607-614页

作者： cheol Hong Kim Sung Woo chung Chu Shik Jhon Mobile System Laboratory Department of Electrical Engineering and Computer Science Seoul National University Seoul 151-742 Korea Department of Computer Science University of Virginia Charlottesville Virginia 22904 U.S.A.

Microarchitects should consider power consumption, together with accuracy, when designing a branch predictor, especially in embedded processors. This paper proposes a power-aware branch predictor, which is based on the gshare predictor, by accessing the BTB （Branch Target Buffer） selectively. To enable the selective access to the BTB, the PHT （Pattern History Table） in the proposed branch predictor is accessed one cycle earlier than the traditional PHT if the program is executed sequentially without branch instructions. As a side effect, two predictions from the PHT are obtained through one access to the PHT, resulting in more power savings. In the proposed branch predictor, if the previous instruction was not a branch and the prediction from the PHT is untaken, the BTB is not accessed to reduce power consumption. If the previous instruction was a branch, the BTB is always accessed, regardless of the prediction from the PHT, to prevent the additional delay/accuracy decrease. The proposed branch predictor reduces the power consumption with little hardware overhead, not incurring additional delay and never harming prediction accuracy. The simulation results show that the proposed branch predictor reduces the power consumption by 29-47%.

关键词： branch predictor BTB embedded processor low power design PHT

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Sprayable nanomicelle hydrogels and inflammatory bowel disease patient cell chips for development of intestinal lesion-specific therapy

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Bioactive Materials 2022年第12期7卷 433-445页

作者： Hyo-Jin Yoon Songhyun Lee Tae Young Kim Seung Eun Yu Hye-Seon Kim Young Shin chung Seyong chung Suji Park Yong cheol Shin Eun Kyung Wang Jihye Noh Hyun Jung Kim cheol Ryong Ku Hong Koh Chang-Soo Kim Joon-Sang Park Young Min Shin Hak-Joon Sung Department of Medical Engineering Yonsei University College of MedicineSeoul03722Republic of Korea School of Electrical and Electronic Engineering Yonsei UniversitySeoul03722Republic of Korea Department of Obstetrics and Gynecology Institution of Women’s Life Medical ScienceSeverance HospitalYonsei University College of MedicineSeoul03722Republic of Korea Department of Biomedical Engineering The University of Texas at AustinAustinTX78712USA Department of Internal Medicine EndocrinologyInstitute of Endocrine ResearchYonsei University College of MedicineSeoul03722Republic of Korea Department of Pediatrics GastroenterologySeverance HospitalYonsei University College of MedicineSeoul03722Republic of Korea Department of Computer Engineering Hongik UniversitySeoul04066Republic of Korea Institute of Tissue Regeneration Engineering(ITREN) Dankook UniversityCheonan31116Republic of Korea Numais Co. Ltd.Korea Seoul 04799Republic of Korea

All-in-one treatments represent a paradigm shift in future *** example,inflammatory bowel disease(IBD)is mainly diagnosed by endoscopy,which could be applied for not only on-site monitoring but also the intestinal lesion-targeted spray of injectable ***,molecular conjugation to the hydrogels would program both lesion-specific adhesion and drug-free *** study validated this concept of all-in-one treatment by first utilizing a well-known injectable hydrogel that underwent efficient solution-to-gel transition and nanomicelle formation as a translatable *** properties enabled spraying of the hydrogel onto the intestinal walls during ***,peptide conjugation to the hydrogel guided endoscopic monitoring of IBD progress upon adhesive gelation with subsequent moisturization of inflammatory lesions,specifically by *** peptide was designed to mimic the major component that mediates intestinal interaction with Bacillus subtilis flagellin during IBD ***,the peptide-guided efficient adhesion of the hydrogel nanomicelles onto Toll-like receptor 5(TLR5)as the main target of flagellin binding and *** peptide binding potently suppressed inflammatory signaling without drug loading,where TLR5 and Notch-1 operated collaboratively through downstream actions of tumor necrosis *** results were produced using a human colorectal cell line,clinical IBD patient cells,gut-on-a-chip,a mouse IBD model,and pig experiments to validate the translational utility.

关键词： Nanomicelle Injectable hydrogel Peptide display Theranostic All-in-one treatment Inflammatory bowel disease

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Successful kidney transplantation from an expanded criteria donor with long-term extracorporeal membrane oxygenation treatment: A case report

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World Journal of Clinical Cases 2020年第3期8卷 540-545页

作者： Hye Won Seo Sua Lee Hwa Young Lee Sun cheol Park byung Ha chung Chul Woo Yang Tae Hyun Ban Division of Nephrology Department of Internal MedicineSeoul St.Mary’s HospitalCollege of MedicineThe Catholic University of KoreaSeoul 06591South Korea Transplant Research Center Department of Internal MedicineSeoul St.Mary’s HospitalCollege of MedicineThe Catholic University of KoreaSeoul 06591South Korea Division of Nephrology Department of Internal MedicineJeju National University HospitalJeju-do 63241South Korea Department of Surgery Seoul St.Mary’s HospitalCollege of MedicineThe Catholic University of Korea222 Banpo-daeroSeoul 06591South Korea Division of Nephrology Department of Internal MedicineEunpyeong St.Mary’s HospitalCollege of MedicineThe Catholic University of KoreaEunpyeong-guSeoul 03312South Korea

BACKGROUND Due to a shortage of donor kidneys, many centers have utilized graft kidneys from brain-dead donors with expanded criteria. Kidney transplantation(KT)from donors on extracorporeal membrane oxygenation(ECMO) has been identified as a successful way of expanding donor pools. However, there are currently no guidelines or recommendations that guarantee successful KT from donors undergoing ECMO treatment. Therefore, acceptance of appropriate allografts from those donors is solely based on clinician *** SUMMARY We report a case of successful KT from a brain-dead donor supported by ECMO for the longest duration to date. A 69-year-old male received a KT from a 63-yearold brain-dead donor who had been on therapeutic ECMO treatment for the previous three weeks. The recipient experienced slow recovery of graft function after surgery but was discharged home on post-operative day 17 free from hemodialysis. Allograft function gradually improved thereafter and was comparatively acceptable up to the 12 mo follow-up, with serum creatinine level of 1.67 mg/d *** This case suggests that donation even after long-term ECMO treatment could provide successful KT to suitable candidates.

关键词： Extracorporeal membrane oxygenation Kidney transplantation Delayed graft function Donor selection Case report

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Defect engineering of ternary Cu-In-Se quantum dots for boosting photoelectrochemical hydrogen generation

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Carbon Energy 2023年第12期5卷 215-228页

作者： Shi Li Sung-Mok Jung Wookjin chung Joo-Won Seo Hwapyong Kim Soo Ik Park Hyo cheol Lee Ji Su Han Seung Beom Ha In Young Kim Su-Il In Jae-Yup Kim Jiwoong Yang Department of Energy Science and Engineering Daegu Gyeongbuk Institute of Science and Technology(DGIST)DaeguRepublic of Korea Department of Chemical Engineering Dankook UniversityYonginRepublic of Korea Department of Chemistry and Nanoscience College of Natural ScienceEwha Womans UniversitySeoulRepublic of Korea Energy Science and Engineering Research Center Daegu Gyeongbuk Institute of Science and Technology(DGIST)DaeguRepublic of Korea

Heavy-metal-free ternary Cu–In–Se quantum dots(CISe QDs)are promising for solar fuel production because of their low toxicity,tunable band gap,and high light absorption *** defects significantly affect the photophysical properties of QDs,the influence on photoelectrochemical hydrogen production is not well ***,we present the defect engineering of CISe QDs for efficient solar-energy *** acid–base reactions between metal halide–oleylamine complexes and oleylammonium selenocarbamate are modulated to achieve CISe QDs with the controlled amount of Cu vacancies without changing their *** them,CISe QDs with In/Cu=1.55 show the most outstanding photoelectrochemical hydrogen generation with excellent photocurrent density of up to 10.7 mA cm-2(at 0.6 VRHE),attributed to the suitable electronic band structures and enhanced carrier concentrations/lifetimes of the *** proposed method,which can effectively control the defects in heavy-metal-free ternary QDs,offers a deeper understanding of the effects of the defects and provides a practical approach to enhance photoelectrochemical hydrogen generation.

关键词： copper-indium-selenide defect engineering photoelectrochemical hydrogen generation quantum dots solar hydrogen

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Effects of obesity on lower urinary tract symptoms in Korean BPH patients

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Asian Journal of Andrology 2009年第6期11卷 663-668页

作者： Seung Hwan Lee Joon Chul Kim Ji-Youl Lee Jang Hwan Kim cheol Young Oh Seung Wook Lee Se Jeong Yoo byung Ha chung Department of Urology Yonsei University Health System Seoul 135-720 Korea Department of Urology The Catholic University of Korea Seoul 137-701 Korea Department of Urology Hallym University Chuncheon 200-704 Korea Department of Urology Eulji Medical Center Eulji University Seoul 139-230 Korea

We analyzed the effects of obesity on lower urinary tract symptoms （LUTSs） in Korean benign prostatic hyperplasia （BPH） patients. This is a multicenter, cross-sectional, prospective study conducted in four centers in Korea. A total of 602 men with LUTSs secondary to BPH were included. BPH/LUTSs cases were men aged ≥ 40 years with intemational prostate symptom scores （IPSS） ≥ 8 points. Height, weight and waist circumference were measured. Among the 602 patients, 156 patients had a waist circumference above 90 cm, representing central obesity, and 215 patients had a body mass index above 25 kg m2. Waist circumference was positively correlated with prostate volume （P = 0.034）. Men with waist circumference 〉 90 cm experienced a 1.36-fold increased risk of severe LUTSs （95% CI 0.82-2.41） compared with men with waist circumference ≤ 90 cm. Prostate volume was positively correlated with urgency and nocturia in men with central obesity. In this population of Korean men diagnosed with BPH, central obesity rather than overall obesity seems to be the more important predictor of LUTSs correlated with BPH.

关键词： benign prostatic hyperplasia central obesity lower urinary tract symptom prostate

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Rationally designed graphene channels for real-time sodium ion detection for electronic tongue

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InfoMat 2023年第7期5卷 43-58页

作者： chung Won Lee Sang Eon Jun Seung Ju Kim Tae Hyung Lee Sol A.Lee Jin Wook Yang Jin Hyuk Cho Shinyoung Choi cheol-joo Kim Soo Young Kim Ho Won Jang Department of Materials Science and Engineering Research Institute of Advanced MaterialsSeoul National UniversitySeoulRepublic of Korea Department of Materials Science and Engineering Korea UniversitySeoulRepublic of Korea Department of Chemical Engineering Pohang University of Science and Technology(POSTECH)PohangRepublic of Korea Advanced Institute of Convergence Technology Seoul National UniversitySuwonRepublic of Korea

Monitoring taste-inducing ions and molecules continuously in liquids or solutions is of great considerable matter for the realization of the electronic tongue(E-tongue).Particularly from the five major tastes,the highly selective,sensitive detection of Na^(+)in real-time is *** is due to the saltiness of food is the key ingredient in most ***,existing Na^(+)detecting devices have relatively low performances of selectivity,sensitivity,and lack of on–off ***,conventional devices significantly deteriorate in capac-ity due to repetitive usage or lifetime shortage by degradation of the sensing ***,a graphene-based channel was rationally designed by the facile decoration of Calix[4]arene and Nafion to address this *** act as a receptor and a molecular sieve,respectively,to enhance selectivity and sensitivity and elon-gate the life expectancy of the *** device was merged with a microfluidic channel to control the injection and withdrawal of solutions to fulfill dynamic on–off *** fabricated device has highly selective,sensitive Na^(+)detection properties compared to other 10 molecule/ionic *** on–off functions of the device were available,also possesses a long lifespan of at least 220 ***,it can precisely discriminate real beverages containing Na^(+),which can be observed by principal component analysis *** features offer the possibility of ascending to a platform for E-tongues in near future.

关键词： electronic tongue graphene microfluidic channels Na^(+)sensors solution-gated field-effect transistors

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