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Lee WJ, Kim SJ, Ahn Y, Park J, Jin S, Jang J, Jeong J, Park M, Lee YS, Lee J, Seo D. From Homogeneity to Turing Pattern: Kinetically Controlled Self-Organization of Transmembrane Protein. Nano Lett 2024; 24:1882-1890. [PMID: 38198287 DOI: 10.1021/acs.nanolett.3c03637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
Understanding the spatial organization of membrane proteins is crucial for unraveling key principles in cell biology. The reaction-diffusion model is commonly used to understand biochemical patterning; however, applying reaction-diffusion models to subcellular phenomena is challenging because of the difficulty in measuring protein diffusivity and interaction kinetics in the living cell. In this work, we investigated the self-organization of the plasmalemma vesicle-associated protein (PLVAP), which creates regular arrangements of fenestrated ultrastructures, using single-molecule tracking. We demonstrated that the spatial organization of the ultrastructures is associated with a decrease in the association rate by actin destabilization. We also constructed a reaction-diffusion model that accurately generates a hexagonal array with the same 130 nm spacing as the actual scale and informs the stoichiometry of the ultrastructure, which can be discerned only through electron microscopy. Through this study, we integrated single-molecule experiments and reaction-diffusion modeling to surpass the limitations of static imaging tools and proposed emergent properties of the PLVAP ultrastructure.
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Affiliation(s)
- Wonhee John Lee
- Department of Physics and Chemistry, DGIST, Daegu 42988, Republic of Korea
| | - Soo Jin Kim
- Department of Medical Science, AMIST, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea
- Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea
| | - Yongdeok Ahn
- Department of Physics and Chemistry, DGIST, Daegu 42988, Republic of Korea
| | - Jiseong Park
- Department of Physics and Chemistry, DGIST, Daegu 42988, Republic of Korea
| | - Siwoo Jin
- Department of Physics and Chemistry, DGIST, Daegu 42988, Republic of Korea
| | - Juhee Jang
- Department of Physics and Chemistry, DGIST, Daegu 42988, Republic of Korea
| | - Jinju Jeong
- Department of New Biology, DGIST, Daegu 42988, Republic of Korea
| | - Minsoo Park
- Department of Physics and Chemistry, DGIST, Daegu 42988, Republic of Korea
| | - Young-Sam Lee
- Department of New Biology, DGIST, Daegu 42988, Republic of Korea
| | - Junyeop Lee
- Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea
- Translational Biomedical Research Group, Asan Institute for Life Science, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea
| | - Daeha Seo
- Department of Physics and Chemistry, DGIST, Daegu 42988, Republic of Korea
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2
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Kim YH, Lee YK, Park SS, Park SH, Eom SY, Lee YS, Lee WJ, Jang J, Seo D, Kang HY, Kim JC, Lim SB, Yoon G, Kim HS, Kim JH, Park TJ. Mid-old cells are a potential target for anti-aging interventions in the elderly. Nat Commun 2023; 14:7619. [PMID: 37993434 PMCID: PMC10665435 DOI: 10.1038/s41467-023-43491-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 11/10/2023] [Indexed: 11/24/2023] Open
Abstract
The biological process of aging is thought to result in part from accumulation of senescent cells in organs. However, the present study identified a subset of fibroblasts and smooth muscle cells which are the major constituents of organ stroma neither proliferative nor senescent in tissues of the elderly, which we termed "mid-old status" cells. Upregulation of pro-inflammatory genes (IL1B and SAA1) and downregulation of anti-inflammatory genes (SLIT2 and CXCL12) were detected in mid-old cells. In the stroma, SAA1 promotes development of the inflammatory microenvironment via upregulation of MMP9, which decreases the stability of epithelial cells present on the basement membrane, decreasing epithelial cell function. Remarkably, the microenvironmental change and the functional decline of mid-old cells could be reversed by a young cell-originated protein, SLIT2. Our data identify functional reversion of mid-old cells as a potential method to prevent or ameliorate aspects of aging-related tissue dysfunction.
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Affiliation(s)
- Young Hwa Kim
- Inflamm-Aging Translational Research Center, Ajou University Medical Center, Suwon, 16499, Korea
| | - Young-Kyoung Lee
- Inflamm-Aging Translational Research Center, Ajou University Medical Center, Suwon, 16499, Korea
- Department of Biochemistry and Molecular Biology, Ajou University School of Medicine, Suwon, 16499, Korea
| | - Soon Sang Park
- Inflamm-Aging Translational Research Center, Ajou University Medical Center, Suwon, 16499, Korea
- Department of Biochemistry and Molecular Biology, Ajou University School of Medicine, Suwon, 16499, Korea
- Department of Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon, 16499, Korea
| | - So Hyun Park
- Department of Pathology, Ajou University School of Medicine, Suwon, 16499, Korea
| | - So Yeong Eom
- Inflamm-Aging Translational Research Center, Ajou University Medical Center, Suwon, 16499, Korea
- Department of Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon, 16499, Korea
- Department of Pathology, Ajou University School of Medicine, Suwon, 16499, Korea
| | - Young-Sam Lee
- Department of New Biology, Daegu Gyeongbuk Institute of Science & Technology, Daegu, 42988, Korea
| | - Wonhee John Lee
- Department of Physics and Chemistry, Daegu Gyeongbuk Institute of Science & Technology, Daegu, 42988, Korea
| | - Juhee Jang
- Department of Physics and Chemistry, Daegu Gyeongbuk Institute of Science & Technology, Daegu, 42988, Korea
| | - Daeha Seo
- Department of Physics and Chemistry, Daegu Gyeongbuk Institute of Science & Technology, Daegu, 42988, Korea
| | - Hee Young Kang
- Inflamm-Aging Translational Research Center, Ajou University Medical Center, Suwon, 16499, Korea
- Department of Dermatology, Ajou University School of Medicine, Suwon, 16499, Korea
| | - Jin Cheol Kim
- Inflamm-Aging Translational Research Center, Ajou University Medical Center, Suwon, 16499, Korea
- Department of Dermatology, Ajou University School of Medicine, Suwon, 16499, Korea
| | - Su Bin Lim
- Inflamm-Aging Translational Research Center, Ajou University Medical Center, Suwon, 16499, Korea
- Department of Biochemistry and Molecular Biology, Ajou University School of Medicine, Suwon, 16499, Korea
- Department of Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon, 16499, Korea
| | - Gyesoon Yoon
- Inflamm-Aging Translational Research Center, Ajou University Medical Center, Suwon, 16499, Korea
- Department of Biochemistry and Molecular Biology, Ajou University School of Medicine, Suwon, 16499, Korea
- Department of Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon, 16499, Korea
| | - Hong Seok Kim
- Department of Molecular Medicine, College of Medicine, Inha University, Incheon, 22212, Korea
| | - Jang-Hee Kim
- Inflamm-Aging Translational Research Center, Ajou University Medical Center, Suwon, 16499, Korea.
- Department of Pathology, Ajou University School of Medicine, Suwon, 16499, Korea.
| | - Tae Jun Park
- Inflamm-Aging Translational Research Center, Ajou University Medical Center, Suwon, 16499, Korea.
- Department of Biochemistry and Molecular Biology, Ajou University School of Medicine, Suwon, 16499, Korea.
- Department of Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon, 16499, Korea.
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3
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Park J, Ahn Y, Lee WJ, Jin S, Jeong S, Kim J, Lee YS, Lee JC, Seo D. Analysis of Phase Heterogeneity in Lipid Membranes Using Single-Molecule Tracking in Live Cells. Anal Chem 2023; 95:15924-15932. [PMID: 37774148 DOI: 10.1021/acs.analchem.3c02655] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/01/2023]
Abstract
In live cells, the plasma membrane is composed of lipid domains separated by hundreds of nanometers in dynamic equilibrium. Lipid phase separation regulates the trafficking and spatiotemporal organization of membrane molecules that promote signal transduction. However, visualizing domains with adequate spatiotemporal accuracy remains challenging because of their subdiffraction limit size and highly dynamic properties. Here, we present a single lipid-molecular motion analysis pipeline (lipid-MAP) for analyzing the phase heterogeneity of lipid membranes by detecting the instantaneous velocity change of a single lipid molecule using the excellent optical properties of nanoparticles, high spatial localization accuracy of single-molecule localization microscopy, and separation capability of the diffusion state of the hidden Markov model algorithm. Using lipid-MAP, individual lipid molecules were found to be in dynamic equilibrium between two statistically distinguishable phases, leading to the formation of small (∼170 nm), viscous (2.5× more viscous than surrounding areas), and transient domains in live cells. Moreover, our findings provide an understanding of how membrane compositional changes, i.e., cholesterol and phospholipids, affect domain formation. This imaging method can contribute to an improved understanding of spatiotemporal-controlled membrane dynamics at the molecular level.
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Affiliation(s)
- Jiseong Park
- Department of Physics and Chemistry, DGIST, Daegu 42988, Republic of Korea
| | - Yongdeok Ahn
- Department of Physics and Chemistry, DGIST, Daegu 42988, Republic of Korea
| | - Wonhee John Lee
- Department of Physics and Chemistry, DGIST, Daegu 42988, Republic of Korea
| | - Siwoo Jin
- Department of Physics and Chemistry, DGIST, Daegu 42988, Republic of Korea
| | - Sejoo Jeong
- Department of New Biology, DGIST, Daegu 42988, Republic of Korea
| | - Jaeyong Kim
- Department of New Biology, DGIST, Daegu 42988, Republic of Korea
| | - Young-Sam Lee
- Department of New Biology, DGIST, Daegu 42988, Republic of Korea
| | - Jong-Chan Lee
- Department of New Biology, DGIST, Daegu 42988, Republic of Korea
| | - Daeha Seo
- Department of Physics and Chemistry, DGIST, Daegu 42988, Republic of Korea
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4
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Jung J, Moon SM, Kim DY, Kim SH, Lee WJ, Heo ST, Park JY, Bae S, Lee MJ, Kim B, Park SY, Jeong HW, Kim Y, Kwak YG, Song KH, Park KH, Park SH, Kim YK, Kim ES, Kim HB. Appropriateness of antibiotic use for patients with asymptomatic bacteriuria or urinary tract infection with positive urine culture: a retrospective observational multi-centre study in Korea. J Hosp Infect 2023; 140:79-86. [PMID: 37562596 DOI: 10.1016/j.jhin.2023.07.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 07/24/2023] [Accepted: 07/29/2023] [Indexed: 08/12/2023]
Abstract
BACKGROUND Antibiotic resistance threatens public health worldwide, and inappropriate use of antibiotics is one of the main causes. AIM To evaluate qualitative use of antibiotics in asymptomatic bacteriuria (ABU) and urinary tract infection (UTI). METHODS Cases of positive urine culture (≥105 colony-forning units/mL) performed in inpatient, outpatient and emergency departments in April 2021 were screened in 26 hospitals in the Republic of Korea. The cases were classified as ABU, lower UTI and upper UTI. The appropriateness of antibiotic use was evaluated retrospectively by infectious disease specialists using quality indicators based on clinical guidelines for ABU and UTI. RESULTS This study included a total of 2697 patients with ABU or UTI. The appropriateness of antibiotic use was assessed in 1157 patients with ABU, and in 677 and 863 patients with lower and upper UTI, respectively. Among the 1157 patients with ABU, 251 (22%) were prescribed antibiotics without appropriate indications. In 66 patients with ABU in which antibiotics were prescribed with appropriate indications, the duration was adequate in only 23 (34.8%) patients. The appropriateness of empirical and definite antibiotics was noted in 527 (77.8%) and 353 (68.0%) patients with lower UTI, and 745 (86.3%) and 583 (78.2%) patients with upper UTI, respectively. The duration of antibiotics was adequate in 321 (61.8%) patients with lower UTI and 576 (78.7%) patients with upper UTI. CONCLUSIONS This nationwide qualitative assessment of antibiotic use in ABU and UTI revealed that antibiotics were often prescribed inappropriately, and the duration of antibiotics was unnecessarily prolonged.
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Affiliation(s)
- J Jung
- Division of Infectious Diseases, Department of Internal Medicine, Soonchunhyang University Seoul Hospital, Seoul, Republic of Korea
| | - S M Moon
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - D Y Kim
- Division of Infectious Diseases, Department of Internal Medicine, Kyung Hee University Hospital, Kyung Hee University School of Medicine, Seoul, Republic of Korea
| | - S-H Kim
- Division of Infectious Diseases, Samsung Changwon Hospital, Sungkyunkwan University, Changwon, Republic of Korea
| | - W J Lee
- Department of Internal Medicine, Hallym Hospital, Incheon, Republic of Korea
| | - S T Heo
- Division of Infectious Disease, Department of Internal Medicine, Jeju National University College of Medicine, Jeju, Republic of Korea
| | - J Y Park
- Department of Paediatrics, Chung-Ang University Hospital, Seoul, Republic of Korea
| | - S Bae
- Division of Infectious Diseases, Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - M J Lee
- Department of Internal Medicine, Inje University Sanggye Paik Hospital, Seoul, Republic of Korea
| | - B Kim
- Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - S Y Park
- Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Republic of Korea; Department of Hospital Medicine, Yongin Severance Hospital, Yonsei University College of Medicine, Yongin, Republic of Korea; Department of Biomedical Systems Informatics, Yonsei University College of Medicine, Seoul, Republic of Korea; Centres for Digital Health, Yongin Severance Hospital, Yonsei University Health System, Yongin, Republic of Korea
| | - H W Jeong
- Department of Internal Medicine, Chungbuk National University College of Medicine, Cheongju, Republic of Korea; Department of Internal Medicine, Chungbuk National University Hospital, Cheongju, Republic of Korea
| | - Y Kim
- Department of Internal Medicine, Wonkwang University College of Medicine, Iksan, Republic of Korea
| | - Y G Kwak
- Department of Internal Medicine, Inje University Ilsan Paik Hospital, Goyang, Republic of Korea
| | - K-H Song
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - K-H Park
- Department of Infectious Diseases, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - S H Park
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Y K Kim
- Department of Internal Medicine, Wonju College of Medicine, Yonsei University, Wonju, Republic of Korea
| | - E S Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - H B Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea.
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5
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Jin S, Park J, Lee WJ, Ahn Y, Park Y, Park M, Hwang I, Seo K, Seo D. Two GPSes in a Ball: Deciphering the Endosomal Tug-of-War Using Plasmonic Dark-Field STORM. JACS Au 2022; 2:1596-1603. [PMID: 35911456 PMCID: PMC9327083 DOI: 10.1021/jacsau.2c00180] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Live video recording of intracellular material transport is a promising means of deciphering the fascinating underlying mechanisms driving life at the molecular level. Such technology holds the key to realizing real-time observation at appropriate resolutions in three-dimensional (3D) space within living cells. Here, we report an optical microscopic method for probing endosomal dynamics with proper spatiotemporal resolution within 3D space in live cells: plasmonic dark-field STORM (pdf-STORM). We first confirmed that pdf-STORM has a spatial resolution comparable to that of scanning electron microscopy. Additionally, by observing two optical probes within a single organelle, we were able to track rotational movements and demonstrate the feasibility of using pdf-STORM to observe the angular displacements of an endosome during a "tug-of-war" over an extended period. Finally, we show various biophysical parameters of the hitherto unelucidated dynamics of endosomes-angular displacement is discontinuous and y-axis movement predominates and follows a long-tail distribution.
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Affiliation(s)
- Siwoo Jin
- Department
of Physics and Chemistry, DGIST, Daegu 42988, Republic of Korea
| | - Jiseong Park
- Department
of Physics and Chemistry, DGIST, Daegu 42988, Republic of Korea
| | - Wonhee John Lee
- Department
of Physics and Chemistry, DGIST, Daegu 42988, Republic of Korea
- Department
of New Biology, DGIST, Daegu 42988, Republic
of Korea
| | - Yongdeok Ahn
- Department
of Physics and Chemistry, DGIST, Daegu 42988, Republic of Korea
| | - Youngchan Park
- Department
of Physics and Chemistry, DGIST, Daegu 42988, Republic of Korea
| | - Minsoo Park
- Department
of Physics and Chemistry, DGIST, Daegu 42988, Republic of Korea
| | - Inchan Hwang
- School
of Energy and Chemical Engineering, UNIST, Ulsan 44919, Republic of Korea
| | - Kwanyong Seo
- School
of Energy and Chemical Engineering, UNIST, Ulsan 44919, Republic of Korea
| | - Daeha Seo
- Department
of Physics and Chemistry, DGIST, Daegu 42988, Republic of Korea
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6
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Mobarak S, Stott M, Lee WJ, Davé M, Tarazi M, Macutkiewicz C. 715 The Importance of Social Media to The Academic Surgical Literature: Relationship Between Twitter Activity and Readership Metrics. Br J Surg 2021. [DOI: 10.1093/bjs/znab258.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
Aim
Social media (SoMe) has an increasing role within professional surgical practice, including the publishing and engagement of academic literature. This study aims to analyse the relationship between social media use and traditional and alternative metrics amongst academic surgical journals.
Method
Journals were identified through the InCites Journal Citation Reports 2019, and their impact factor (IF), h-index and CiteScore were noted. Social media platforms were examined, and Twitter activity interrogated between 1st January- 31st December 2019. Healthcare Social Graph (HSG) score and an aggregated Altmetric score were also calculated for each journal. Statistical analysis was carried out to look at the correlation between traditional metrics, Twitter activity and altmetrics.
Results
Journals with higher IF were more likely to use a greater number of SoMe platforms (R2=0.648; p < 0.0001). Journals with dedicated Twitter profiles had a higher IF than journals without (median, 2.96 vs 1.88; MWU=390; p < 0.001) however over a one-year period (2018-2019) having a twitter presence did not alter IF (MWU=744.5; p = 0.885). Increased Twitter activity was positively correlated with IF. Longitudinal analysis over six years suggested cumulative tweets correlated with an increased IF (R2=0.324, p = 0.004). Novel alternative measures including HSG score (R2=0.472, p = 0.005) and Altmetric score (R2=0.779, p = 0.001) positively correlated with IF.
Conclusions
Higher IF is associated with SoMe presence and activity, particularly on Twitter, with long term activity being of particular importance. Modern alternative metrics correlate with IF. This relationship is complex and future studies should look to understand this further.
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Affiliation(s)
- S Mobarak
- Manchester Royal Infirmary, Manchester, United Kingdom
| | - M Stott
- Manchester Royal Infirmary, Manchester, United Kingdom
| | - W J Lee
- W2O Group, London, United Kingdom
| | - M Davé
- Manchester Royal Infirmary, Manchester, United Kingdom
| | - M Tarazi
- Manchester Royal Infirmary, Manchester, United Kingdom
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7
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Abstract
Solar-driven reactive oxygen species (ROS) generation is an attractive disinfection technique for cell death and water purification. However, most photocatalysts require high stability in the water environment and the production of ROS with a sufficient amount and diffusion length to damage pathogens. Here, a ROS generation system was developed consisting of tapered crystalline silicon microwires coated with anatase titanium dioxide for a conformal junction. The system effectively absorbed >95% of sunlight over 300-1100 nm, resulting in effective ROS generation. The system was designed to produce various ROS species, but a logistic regression analysis with cellular survival data revealed that the diffusion length of the ROS is ∼9 μm, implying that the most dominant species causing cell damage is H2O2. Surprisingly, a quantitative analysis showed that only 15 min of light irradiation on the system would catalyze a local bactericidal effect comparable to the conventional germicidal level of H2O2 (∼3 mM).
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Affiliation(s)
- Kangmin Lee
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology, Ulsan 44919, Republic of Korea
| | - Sangwon Shin
- Department of Emerging Materials Science, Daegu Gyeongbuk Institute of Science and Technology, Daegu 42988, Republic of Korea
| | - Wonhee John Lee
- Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology, Daegu 42988, Republic of Korea
| | - Deokjae Choi
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology, Ulsan 44919, Republic of Korea
| | - Yongdeok Ahn
- Department of Emerging Materials Science, Daegu Gyeongbuk Institute of Science and Technology, Daegu 42988, Republic of Korea
| | - Minsoo Park
- Department of Emerging Materials Science, Daegu Gyeongbuk Institute of Science and Technology, Daegu 42988, Republic of Korea
| | - Daeha Seo
- Department of Emerging Materials Science, Daegu Gyeongbuk Institute of Science and Technology, Daegu 42988, Republic of Korea
| | - Kwanyong Seo
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology, Ulsan 44919, Republic of Korea
- Center for Wave Energy Materials, Ulsan National Institute of Science and Technology, Ulsan 44919, Republic of Korea
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8
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Lax G, Kolisko M, Eglit Y, Lee WJ, Yubuki N, Karnkowska A, Leander BS, Burger G, Keeling PJ, Simpson AGB. Multigene phylogenetics of euglenids based on single-cell transcriptomics of diverse phagotrophs. Mol Phylogenet Evol 2021; 159:107088. [PMID: 33545276 DOI: 10.1016/j.ympev.2021.107088] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 01/24/2021] [Accepted: 01/26/2021] [Indexed: 12/22/2022]
Abstract
Euglenids are a well-known group of single-celled eukaryotes, with phototrophic, osmotrophic and phagotrophic members. Phagotrophs represent most of the phylogenetic diversity of euglenids, and gave rise to the phototrophs and osmotrophs, but their evolutionary relationships are poorly understood. Symbiontids, in contrast, are anaerobes that are alternatively inferred to be derived euglenids, or a separate euglenozoan group. Most phylogenetic studies of euglenids have examined the SSU rDNA only, which is often highly divergent. Also, many phagotrophic euglenids (and symbiontids) are uncultured, restricting collection of other molecular data. We generated transcriptome data for 28 taxa, mostly using a single-cell approach, and conducted the first multigene phylogenetic analyses of euglenids to include phagotrophs and symbiontids. Euglenids are recovered as monophyletic, with symbiontids forming an independent branch within Euglenozoa. Spirocuta, the clade of flexible euglenids that contains both the phototrophs (Euglenophyceae) and osmotrophs (Aphagea), is robustly resolved, with the ploeotid Olkasia as its sister group, forming the new taxon Olkaspira. Ploeotids are paraphyletic, although Ploeotiidae (represented by Ploeotia spp.), Lentomonas, and Keelungia form a robust clade (new taxon Alistosa). Petalomonadida branches robustly as sister to other euglenids in outgroup-rooted analyses. Within Spirocuta, Euglenophyceae is a robust clade that includes Rapaza, and Anisonemia is a well-supported monophyletic group containing Anisonemidae (Anisonema and Dinema spp.), 'Heteronema II' (represented by H. vittatum), and a clade of Neometanema plus Aphagea. Among 'peranemid' phagotrophs, Chasmostoma branches with included Urceolus, and Peranema with the undescribed 'Jenningsia II', while other relationships are weakly supported and consequently the closest sister group to Euglenophyceae remains unresolved. Our results are inconsistent with recent inferences that Entosiphon is the evolutionarily pivotal sister either to other euglenids, or to Spirocuta. At least three transitions between posterior and anterior flagellar gliding occurred in euglenids, with the phylogenetic positions and directions of those transitions remaining ambiguous.
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Affiliation(s)
- G Lax
- Department of Biology, and Centre for Comparative Genomics and Evolutionary Bioinformatics, Dalhousie University, Halifax, Canada; Department of Botany, University of British Columbia, Vancouver, Canada(1)
| | - M Kolisko
- Institute of Parasitology, Biology Centre, Czech Academy of Sciences, České Budějovice, Czech Republic
| | - Y Eglit
- Department of Biology, and Centre for Comparative Genomics and Evolutionary Bioinformatics, Dalhousie University, Halifax, Canada
| | - W J Lee
- Department of Environment and Energy Engineering, Kyungnam University, Changwon, Republic of Korea
| | - N Yubuki
- Unité d'Ecologie Systématique et Evolution, CNRS, Université Paris-Saclay, Orsay, France; Department of Zoology, University of British Columbia, Vancouver, Canada
| | - A Karnkowska
- Institute of Evolutionary Biology, Faculty of Biology, University of Warsaw, Poland
| | - B S Leander
- Department of Zoology, University of British Columbia, Vancouver, Canada
| | - G Burger
- Robert-Cedergren Centre for Bioinformatics and Genomics, Biochemistry Department, Université de Montréal, Montréal, Canada
| | - P J Keeling
- Department of Botany, University of British Columbia, Vancouver, Canada(1)
| | - A G B Simpson
- Department of Biology, and Centre for Comparative Genomics and Evolutionary Bioinformatics, Dalhousie University, Halifax, Canada.
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9
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Lee KD, Lee SB, Lim JK, Kang YM, Kim IB, Moon HJ, Lee WJ. Providing essential clinical care for non-COVID-19 patients in a Seoul metropolitan acute care hospital amidst ongoing treatment of COVID-19 patients. J Hosp Infect 2020; 106:673-677. [PMID: 33011308 PMCID: PMC7528870 DOI: 10.1016/j.jhin.2020.09.031] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 09/14/2020] [Accepted: 09/26/2020] [Indexed: 12/13/2022]
Abstract
We assessed infection control efforts by comparing data collected over 20 weeks during a pandemic under a dual-track healthcare system. A decline in non-COVID-19 patients visiting the emergency department by 37.6% (P<0.01) was observed since admitting COVID-19 cases. However, patients with acute myocardial infarction (AMI), stroke, severe trauma and acute appendicitis presenting for emergency care did not decrease. Door-to-balloon time (34.3 (± 11.3) min vs 22.7 (± 8.3) min) for AMI improved significantly (P<0.01) while door-to-needle time (55.7 (± 23.9) min vs 54.0 (± 18.0) min) in stroke management remained steady (P=0.80). Simultaneously, time-sensitive care involving other clinical services, including patients requiring chemotherapy, radiation therapy and haemodialysis did not change.
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Affiliation(s)
- K D Lee
- Department of Infectious Diseases, Myongji Hospital, Hanyang University College of Medicine, Goyang, Republic of Korea
| | - S B Lee
- Department of Physical Medicine and Rehabilitation, Myongji Hospital, Hanyang University College of Medicine, Goyang, Republic of Korea
| | - J K Lim
- Department of Laboratory Medicine, Myongji Hospital, Hanyang University College of Medicine, Goyang, Republic of Korea
| | - Y M Kang
- Department of Infectious Diseases, Myongji Hospital, Hanyang University College of Medicine, Goyang, Republic of Korea
| | - I B Kim
- Department of Emergency Medicine, Myongji Hospital, Hanyang University College of Medicine, Goyang, Republic of Korea
| | - H J Moon
- New Horizon Cancer Institute, Myongji Hospital, Goyang, Republic of Korea
| | - W J Lee
- Department of General Surgery, Myongji Hospital, Goyang, Republic of Korea.
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10
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Sohng C, Han MH, Park D, Park KD, Jang YH, Lee WJ, Lee SJ, Kim JY. Clinical features of subungual melanoma according to the extent of Hutchinson's nail sign: a retrospective single-centre study. J Eur Acad Dermatol Venereol 2020; 35:380-386. [PMID: 32562580 DOI: 10.1111/jdv.16762] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 05/27/2020] [Indexed: 11/26/2022]
Abstract
BACKGROUND Hutchinson's nail sign (HS) is among the diagnostic criteria for subungual melanoma (SUM). However, there is minimal evidence supporting the overall clinical significance of HS in SUM. OBJECTIVES To identify clinicopathological features of SUM according to the extent of HS. METHODS Retrospective cohort study was performed with consecutive SUM patients at a single centre from January 2006 to December 2017. The extent of HS was defined by the number of affected nail folds (range 0-4). Comparison groups were organized as follows: patients with HS (affecting ≥1 nail folds) vs. without HS; patients with HS affecting ≥2 nail folds vs. HS affecting <2 nail folds; patients with HS affecting ≥3 nail folds vs. HS affecting <3 nail folds. Clinicopathological characteristics of SUM were compared between the groups. RESULTS Sixty-one SUM patients were included. Forty-six (75.4%) exhibited HS; 22 (47.8%) on a toe and 24 (52.2%) on a finger. In multivariate analysis, nail destruction [hazard ratio (HR), 10.00; 95% confidence interval (CI), 2.61-38.30; P = 0.001] was significantly associated with the presence of HS and amputation was significantly associated with HS affecting ≥2 nail folds (HR, 4.75; 95% CI, 1.36-16.61; P = 0.015). High T stage (HR, 1.85; 95% CI, 1.20-2.85; P = 0.005, Fig. 2) was significantly associated with HS appearing in ≥3 nail folds. CONCLUSION Besides its value of detecting SUM, HS provides useful clinical information. The number of nail folds exhibiting HS could be a useful clinical clue for planning therapeutic strategies for SUM.
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Affiliation(s)
- C Sohng
- Department of Dermatology, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, South Korea
| | - M H Han
- Department of Pathology, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, South Korea
| | - D Park
- Department of Physical Medicine and Rehabilitation, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, South Korea
| | - K D Park
- Department of Dermatology, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, South Korea
| | - Y H Jang
- Department of Dermatology, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, South Korea
| | - W J Lee
- Department of Dermatology, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, South Korea
| | - S J Lee
- Department of Dermatology, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, South Korea
| | - J Y Kim
- Department of Dermatology, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, South Korea
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11
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Jung JM, Jung CJ, Lee WJ, Won CH, Lee MW, Choi JH, Chang SE. Topically applied treatments for external genital warts in nonimmunocompromised patients: a systematic review and network meta-analysis. Br J Dermatol 2019; 183:24-36. [PMID: 31675442 DOI: 10.1111/bjd.18638] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/24/2019] [Indexed: 01/22/2023]
Abstract
Selecting a topical treatment from among the numerous topical agents for external genital warts remains challenging without clear evidence. Our aim was to evaluate comparatively the efficacy and safety of topical agents for external genital warts using a network meta-analysis. We included all randomized controlled trials that evaluated any topically applied treatment for external genital warts. Using the R package netmeta, network meta-analyses were performed with a frequentist approach. We identified 41 relevant studies comprising 6371 patients. Among conventional agents, podophyllotoxin 0·5% solution (odds ratio 1·94, 95% confidence interval 1·02-3·71) was significantly more efficacious than imiquimod 5% cream for lesion clearance; however, it was associated with a higher overall adverse event rate. Sinecatechins 15% ointment (odds ratio 0·21, 95% confidence interval 0·12-0·34) was significantly less efficacious than imiquimod 5% cream. Idoxuridine, polyhexamethylene biguanide, cidofovir and SB206 showed comparable therapeutic efficacies with conventional therapies. None of the treatments were significantly different from each other with respect to recurrence, patients with severe adverse events, or patients who withdrew because of treatment-related adverse events. Conventional modalities were efficacious and well tolerated, although each of them had their advantages and disadvantages. Additional efficacy and safety studies are warranted for unconventional agents.
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Affiliation(s)
- J M Jung
- Department of Dermatology, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - C J Jung
- Department of Dermatology, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - W J Lee
- Department of Dermatology, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - C H Won
- Department of Dermatology, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - M W Lee
- Department of Dermatology, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - J H Choi
- Department of Dermatology, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - S E Chang
- Department of Dermatology, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
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12
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Lee HJ, Kim DH, Na YJ, Kwon MR, Yoon HJ, Lee WJ, Woo SH. Factors associated with HIV/AIDS-related stigma and discrimination by medical professionals in Korea: A survey of infectious disease specialists in Korea. Niger J Clin Pract 2019; 22:675-681. [PMID: 31089023 DOI: 10.4103/njcp.njcp_440_17] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Objectives This study sought to identify factors associated with this discrimination by medical professionals in Korea. Subjects and Methods This study was a cross-sectional survey. We conducted web-based surveys against infectious disease specialists and infectious disease nurse. We evaluated the frequency of human immunodeficiency virus (HIV)/AIDS-related discrimination by medical professionals by health service type on the 5-point scale. We identified the association between several factors and HIV/AIDS-related stigma and discrimination by medical professionals on the 5-point scale. Results A total of 81 experts, 57 infectious disease specialists (approximately 27% of all infectious disease specialists in Korea) and 24 infectious disease nurse practitioners, participated in this study. The frequency of stigma and discrimination increased significantly when invasive treatment included both outpatient and inpatient services (both P < 0.05). Medical professional's preconceptions, fear of infection, and lack of knowledge have an association with HIV/AIDS-related stigma and discrimination by medical professionals. Conclusion HIV/AIDS-related stigma and discrimination by medical professionals in Korea might be associated with factors related to the fear of medical professionals.
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Affiliation(s)
- H J Lee
- Department of Preventive Medicine, Inha University College of Medicine, Incheon, Republic of Korea
| | - D H Kim
- Department of Emergency Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Y J Na
- Department of Research, Women with Disabilities Empathy, Seoul, Republic of Korea
| | - M R Kwon
- Department of Research, Korean Network of People Living with HIV/AIDS, Seoul, Republic of Korea
| | - H J Yoon
- Department of Nuclear Medicine, College of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - W J Lee
- Department of Emergency Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - S H Woo
- Department of Emergency Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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Abstract
Parasitäre Erkrankungen werden in Europa relativ selten diagnostiziert und behandelt. Somit sind auch klinische Besonderheiten und bildgebende Merkmale weniger bekannt. In den heutigen Zeiten von Migration und weltweiter Flüchtlingsströme ist die Kenntnis parasitärer Infektionen zunehmend von Bedeutung. Anhand von klinischen Beschreibungen der Echinokokkose, Schistosomiasis, Fasciolosis und Ascariasis wurden entsprechende Berichte in der Zeitschrift für Gastroenterologie publiziert. In der hier präsentierten Veröffentlichung werden klinische Besonderheiten und Bildgebungsmerkmale der Toxocariasis diskutiert.
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Affiliation(s)
- Christoph F Dietrich
- Department of Internal Medicine 2, Caritas Krankenhaus, Bad Mergentheim, Germany
| | - Carmen-Michaela Cretu
- Department of Parasitology, Carol Davila University of Medicine and Pharmacy, Colentina Clinical Hospital, Bucharest, Romania
| | - Nathan S S Atkinson
- Department of Gastroenterology, Waitemata District Health Board, Auckland, NZ
| | - W J Lee
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Joachim Richter
- Institute of Tropical Medicine and International Health Charité Universitätsmedizin, Berlin, Germany
| | - Xin-Wu Cui
- Xin-Wu Cui, Department of Medical Ultrasound, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zeno Sparchez
- 3rd Medical Department, University of Medicine and Pharmacy "Iuliu Hatieganu", Institute for Gastroenterology and Hepatology "O. Fodor" Cluj-Napoca, Romania
| | - Yi Dong
- Department of Ultrasound, Zhongshan Hospital, Fudan University, Shanghai, China
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14
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Choi Y, Hwang BH, Hwang BH, Lee WJ, Lee KY, Park HW, Kim BH, Lee KY, Byeon JH, Kim JJ, Park HW, Kim JJ, Kim CJ, Chang KY, Kim CJ, Chang KY. P2264A clinical risk score to predict the presence of obstructive coronary artery disease in asymptomatic patients with type 2 diabetes. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Y Choi
- Seoul St. Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Seoul, Korea Republic of
| | - B H Hwang
- Seoul St. Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Seoul, Korea Republic of
| | - B H Hwang
- St.Paul's Hospital, Division of Cardiology, Department of Internal Medicine, Seoul, Korea Republic of
| | - W J Lee
- St.Paul's Hospital, Division of Cardiology, Department of Internal Medicine, Seoul, Korea Republic of
| | - K Y Lee
- St.Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Incheon, Korea Republic of
| | - H W Park
- Daejeon St. Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Daejeon, Korea Republic of
| | - B H Kim
- Seoul St. Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Seoul, Korea Republic of
| | - K Y Lee
- St.Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Incheon, Korea Republic of
| | - J H Byeon
- Seoul St. Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Seoul, Korea Republic of
| | - J J Kim
- Yeouido St. Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Seoul, Korea Republic of
| | - H W Park
- Daejeon St. Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Daejeon, Korea Republic of
| | - J J Kim
- Yeouido St. Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Seoul, Korea Republic of
| | - C J Kim
- Uijeongbu St. Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Uijeongbu, Korea Republic of
| | - K Y Chang
- Seoul St. Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Seoul, Korea Republic of
| | - C J Kim
- Uijeongbu St. Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Uijeongbu, Korea Republic of
| | - K Y Chang
- Seoul St. Mary's Hospital, Division of Cardiology, Department of Internal Medicine, Seoul, Korea Republic of
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15
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Woo SH, Lee WJ, Seol SH, Kim DH, Choi SP. The accuracies of abdominal computed tomography and the neutrophil-to-lymphocyte ratio used to predict the development of clinically severe acute cholecystitis in elderly patients visiting an emergency department. Niger J Clin Pract 2018; 21:645-652. [PMID: 29735867 DOI: 10.4103/njcp.njcp_76_17] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background Mortality in patients with severe acute cholecystitis (AC) remains high, and the prognosis for elderly patients tends to be poor. A comparative analysis of clinical, laboratory, and abdominal computed tomography (CT) parameters was conducted in this study to investigate the effectiveness of each index for predicting clinically severe AC in elderly patients in the emergency department (ED). Methods This was a single-center, retrospective study that included 156 patients (≥65 years of age) with AC who were admitted in the ED between January 2012 and December 2014. Parameters including age, gender, initial clinical findings, laboratory findings, and CT findings in the ED were examined for their ability to predict severity. Results Forty-five patients were diagnosed with clinically severe AC. The white blood cell count, neutrophil count, neutrophil-to-lymphocyte ratio (NLR), C-reactive protein, erythrocyte sedimentation rate, protein, albumin, and prothrombin time/International Normalized Ratio values were significantly higher in the severe group than in the nonsevere group (P < 0.05). In addition, the CT parameters of increased pericholecystic fat stranding and pericholecystic fluid collection were significantly higher in the severe group than in the nonsevere group (P < 0.001, P < 0.001). Increased pericholecystic fat stranding (odds ratio [OR], 8.17; 95% confidence interval [CI], 2.29-29.22; P = 0.001), pericholecystic fluid collection (OR, 6.55; 95% CI, 1.39-30.92; P = 0.018), and an NLR cutoff value of 9.9 (OR, 4.20; 95% CI, 1.01-17.53; P = 0.049) were independent predictors of severe AC in elderly patients. Conclusions The CT parameters of increased pericholecystic fat stranding and pericholecystic fluid collection with an NLR cutoff of 9.9 were useful for predicting the severity of AC in elderly patients in the ED.
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Affiliation(s)
- S H Woo
- Department of Emergency Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, South Korea
| | - W J Lee
- Department of Emergency Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, South Korea
| | - S H Seol
- Department of Emergency Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, South Korea
| | - D H Kim
- Department of Emergency Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, South Korea
| | - S P Choi
- Department of Emergency Medicine, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, South Korea
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16
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Lee GW, Lee JM, Lee WJ, Kim YB, Min YG. Clinical Implication of Tests for Prostate-specific Antigen in Brain-dead Organ Donors. Transplant Proc 2018; 50:20-23. [PMID: 29407309 DOI: 10.1016/j.transproceed.2017.11.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Revised: 09/29/2017] [Accepted: 11/03/2017] [Indexed: 11/29/2022]
Abstract
BACKGROUND Although cancer screening tests are not mentioned under brain-dead organ donor care guidelines in Korea, we assessed the level of prostate-specific antigen (PSA), an important prostate cancer marker, and performed prostate biopsies when needed in brain-dead organ donors. We believe that insisting on a screening test for cancer diagnosis in donors' organs is important. MATERIALS AND METHODS Data were collected between January 2010 and July 2015 from Ajou University Hospital. We retrospectively analyzed the PSA levels and prostate biopsy results in 111 male brain-dead organ donors (mean age, 48.4 years). RESULTS The mean PSA level was 7.395 ng/mL (range, 0.062 to 61.780; reference, 0 to 4 ng/mL). Ultrasonography or computed tomographic examination did not reveal prostate cancer, and a rectal examination was not performed. After checking the PSA levels, prostate biopsies were performed in 16 patients based on the recommendations of a urologist, and 4 patients (3.6% of 111) were diagnosed with prostate cancer. All cancers involved adenocarcinomas (acinar type) histopathologically. In 2 patients, the Gleason score was 6 (3 + 3), whereas the other 2 showed a score of 7 (3 + 4). Among the patients diagnosed with prostate cancer, 1 donated his liver and corneas, and the remaining 3 could not donate. CONCLUSION Well-defined cancer screening tests are needed in Korea. Additionally, when the probability of organ transplantation-induced cancer metastasis is low or a recipient is at a high risk owing to not receiving organs, the law should allow organ donation even if prostate cancer is diagnosed in the donor.
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Affiliation(s)
- G W Lee
- Department of Surgery, Ajou University School of Medicine, Suwon, Korea
| | - J-M Lee
- Department of Surgery, Korea University Anam Hospital, Korea University School of Medicine, Seoul, Korea.
| | - W J Lee
- Brain-Dead Organ Donation Coordinator, Ajou University Hospital, Suwon, Korea
| | - Y B Kim
- Department of Pathology, Ajou University School of Medicine, Suwon, Korea
| | - Y G Min
- Department of Emergency Medicine, Ajou University School of Medicine, Suwon, Korea
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17
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Cho YK, Kang YM, Lee SE, Lee J, Park JY, Lee WJ, Kim YJ, Jung CH. Efficacy and safety of combination therapy with SGLT2 and DPP4 inhibitors in the treatment of type 2 diabetes: A systematic review and meta-analysis. Diabetes Metab 2018; 44:393-401. [PMID: 29449146 DOI: 10.1016/j.diabet.2018.01.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 12/27/2017] [Accepted: 01/12/2018] [Indexed: 01/14/2023]
Abstract
BACKGROUND This review evaluated the efficacy and safety of a combination therapy comprising a sodium-glucose cotransporter type 2 inhibitor (SGLT2i) and dipeptidyl peptidase-4 inhibitor (DPP4i) in type 2 diabetes. METHODS A literature search through to May 2017 was carried out of PubMed, Embase and the Cochrane Central Register of Controlled Trials. Studies were eligible if they were randomized controlled trials (RCTs) comparing SGLT2i plus DPP4i (SGLT2i/DPP4i) against DPP4i±placebo or SGLT2i±placebo and published in English. The primary outcome was change in HbA1c from baseline. RESULTS Eight RCTs comparing SGLT2i/DPP4i and DPP4i, and five RCTs comparing SGLT2i/DPP4i and SGLT2i, with three RCTs involving both comparisons, were included in the present review. SGLT2i/DPP4i resulted in a greater mean HbA1c reduction [weighted mean difference (WMD]): -0.62%] than did DPP4i alone, which was a much less marked reduction (WMD: -0.35%) than with SGLT2i alone. Also, significant differences in body weight loss from baseline were observed only with SGLT2i/DPP4i vs. DPP4i, but not vs. SGLT2i. The risk of hypoglycaemic events was low and similar between treatment groups. When subjects were stratified based on baseline HbA1c, any reduction by SGLT2i/DPP4i in relation to DPP4i was proportional to baseline HbA1c levels. However, compared with SGLT2i, HbA1c reductions with SGLT2i/DPP4i were modest regardless of baseline HbA1c. CONCLUSION Combination therapy with SGLT2i and DPP4i is both efficacious and safe. In particular, a marked additional glucose-lowering effect is evident when SGLT2i is combined with or added to DPP4i, and not vice versa. However, baseline HbA1c determined the additional glucose-lowering effects of SGLT2i in combined treatment with DPP4i.
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Affiliation(s)
- Y K Cho
- Department of Internal Medicine, Asan Medical Centre, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, 05505 Seoul, Republic of Korea
| | - Y M Kang
- Department of Internal Medicine, Asan Medical Centre, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, 05505 Seoul, Republic of Korea
| | - S E Lee
- Department of Internal Medicine, Asan Medical Centre, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, 05505 Seoul, Republic of Korea
| | - J Lee
- Department of Internal Medicine, Asan Medical Centre, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, 05505 Seoul, Republic of Korea
| | - J-Y Park
- Department of Internal Medicine, Asan Medical Centre, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, 05505 Seoul, Republic of Korea
| | - W J Lee
- Department of Internal Medicine, Asan Medical Centre, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, 05505 Seoul, Republic of Korea
| | - Y-J Kim
- Department of Clinical Epidemiology and Biostatistics, Asan Medical Centre, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, 05505 Seoul, Republic of Korea
| | - C H Jung
- Department of Internal Medicine, Asan Medical Centre, University of Ulsan College of Medicine, 88, Olympic-ro 43-gil, Songpa-gu, 05505 Seoul, Republic of Korea.
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Hou CY, Lee WJ. Female with Upper Abdominal Pain. HONG KONG J EMERG ME 2017. [DOI: 10.1177/102490791702400308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- CY Hou
- Chi-Mei Medical Center. Department of Emergency Medicine. 901 Zhonghua Road, Yongkang District, Tainan 710, Taiwan
| | - WJ Lee
- Chi-Mei Medical Center. Department of Emergency Medicine. 901 Zhonghua Road, Yongkang District, Tainan 710, Taiwan
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19
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Liu TH, Lee WJ. Elderly Female with Low Abdominal Pain. HONG KONG J EMERG ME 2017. [DOI: 10.1177/102490791702400203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- TH Liu
- E-Da Hospital, Department of Emergency Medicine, I-Shou University, Kaohsiung, Taiwan
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20
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Lee WJ, Kang HJ, Shin HJ, Won CH, Chang SE, Choi JH, Lee MW. Neutrophilic urticarial dermatosis and Sweet-like neutrophilic dermatosis: under-recognized neutrophilic dermatoses in lupus erythematosus. Lupus 2017; 27:628-636. [DOI: 10.1177/0961203317736145] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- W J Lee
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - H J Kang
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - H J Shin
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - C H Won
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - S E Chang
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - J H Choi
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - M W Lee
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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21
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Lee WJ, Kim YJ, Lee YJ, Won CH, Chang SE, Choi JH, Lee MW. Vascular endothelial growth factor protein expression is associated with a poor prognosis in patients with cutaneous extranodal natural killer/T-cell lymphoma. Br J Dermatol 2017; 178:e11-e12. [PMID: 28599079 DOI: 10.1111/bjd.15720] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/03/2017] [Indexed: 11/29/2022]
Affiliation(s)
- W J Lee
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Y J Kim
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Y J Lee
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - C H Won
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - S E Chang
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - J H Choi
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - M W Lee
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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Kim DH, Woo SH, Lee WJ. Iliacus abscess with radiculopathy mimicking herniated nucleus pulposus: Additional diagnostic value of magnetic resonance imaging. Niger J Clin Pract 2017; 20:392-393. [PMID: 28256498 DOI: 10.4103/1119-3077.201433] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
An iliacus abscess is an extremely rare cause of low back pain. With an iliacus abscess, the classical signs seen with a psoas abscess are frequently absent. Therefore, a timely diagnosis at the initial visit is difficult and inadequate treatment usually results in high mortality. Here, we report the case of 19-year-old man who presented with acute low back pain with radiculopathy and was ultimately diagnosed with an iliacus muscle abscess.
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Affiliation(s)
- D H Kim
- Department of Emergency Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Republic of Korea
| | - S H Woo
- Department of Emergency Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Republic of Korea
| | - W J Lee
- Department of Emergency Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Republic of Korea
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Jung HJ, Song JH, Kekatpure AL, Adikrishna A, Hong HP, Lee WJ, Chun JM, Jeon IH. The use of continuous negative pressure after open debridement for septic arthritis of the shoulder. Bone Joint J 2017; 98-B:660-5. [PMID: 27143738 DOI: 10.1302/0301-620x.98b5.36720] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Accepted: 11/11/2015] [Indexed: 12/17/2022]
Abstract
AIMS The treatment of septic arthritis of the shoulder is challenging. The infection frequently recurs and the clinical outcome can be very poor. We aimed to review the outcomes following the use of continuous negative pressure after open debridement with a large diameter drain in patients with septic arthritis of the shoulder. PATIENTS AND METHODS A total of 68 consecutive patients with septic arthritis of the shoulder underwent arthrotomy, irrigation and debridement. A small diameter suction drain was placed in the glenohumeral joint and a large diameter drain was placed in the subacromial space with continuous negative pressure of 15 cm H2O. All patients received a standardised protocol of antibiotics for a mean of 5.1 weeks (two to 11.1). RESULTS Negative pressure was maintained for a mean of 24 days (14 to 32). A total of 67 patients (98.5%) were cured without further treatment being required. At a mean follow-up of 14 months (three to 72), the mean forward flexion was 123° (80° to 140°) and the mean external rotation was 28°(10° to 40°) in those with a rotator cuff tear, and 125° (85° to 145°) and 35° (15° to 45°) in those without a rotator cuff tear. CONCLUSION Continuous negative pressure, following open arthrotomy, irrigation and debridement, was effective in treating septic arthritis of the shoulder. The rate of recurrence was significantly lower than with conventional treatment involving arthroscopic or open debridement reported in the literature. Functional outcomes, even in patients with rotator cuff tears, were excellent. TAKE HOME MESSAGE Continuous negative pressure is effective in treating septic arthritis of the shoulder. Cite this article: Bone Joint J 2016;98-B:660-5.
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Affiliation(s)
- H J Jung
- University of Ulsan, 86 Asanbyeongwon-gil, Songpa-gu, Seoul, 138-736, South Korea
| | - J H Song
- University of Ulsan, 86 Asanbyeongwon-gil, Songpa-gu, Seoul, 138-736, South Korea
| | - A L Kekatpure
- University of Ulsan, 86 Asanbyeongwon-gil, Songpa-gu, Seoul, 138-736, South Korea
| | - A Adikrishna
- University of Ulsan, 86 Asanbyeongwon-gil, Songpa-gu, Seoul, 138-736, South Korea
| | - H P Hong
- University of Ulsan, 86 Asanbyeongwon-gil, Songpa-gu, Seoul, 138-736, South Korea
| | - W J Lee
- University of Ulsan, 86 Asanbyeongwon-gil, Songpa-gu, Seoul, 138-736, South Korea
| | - J M Chun
- University of Ulsan, 86 Asanbyeongwon-gil, Songpa-gu, Seoul, 138-736, South Korea
| | - I H Jeon
- University of Ulsan, 86 Asanbyeongwon-gil, Songpa-gu, Seoul, 138-736, South Korea
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Jung SA, Lee DH, Moon JH, Hong SW, Shin JS, Hwang IY, Shin YJ, Kim JH, Gong EY, Kim SM, Lee EY, Lee S, Kim JE, Kim KP, Hong YS, Lee JS, Jin DH, Kim T, Lee WJ. Corrigendum to 'L-Ascorbic acid can abrogate SVCT-2-dependent cetuximab resistance mediated by mutant KRAS in human colon cancer cells': [Free Radic. Biol. Med. 95 (2016) 200-208]. Free Radic Biol Med 2016; 97:620. [PMID: 27476024 DOI: 10.1016/j.freeradbiomed.2016.07.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- S A Jung
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - D H Lee
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Biomedical Science and Engineering Interdisciplinary Program, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, Republic of Korea
| | - J H Moon
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - S W Hong
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - J S Shin
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - I Y Hwang
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - Y J Shin
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - J H Kim
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - E Y Gong
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - S M Kim
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - E Y Lee
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - S Lee
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - J E Kim
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - K P Kim
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - Y S Hong
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - J S Lee
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - D H Jin
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Department of Convergence Medicine, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea.
| | - T Kim
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea.
| | - W J Lee
- Department of Anatomy and Tumor Immunity Medical Research Center, Seoul National University College of Medicine, Seoul 110-744, Republic of Korea
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25
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Lee WJ, Lee JH, Lee BR. Fundus autofluorescence imaging patterns in central serous chorioretinopathy according to chronicity. Eye (Lond) 2016; 30:1336-1342. [PMID: 27285318 DOI: 10.1038/eye.2016.113] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Accepted: 04/14/2016] [Indexed: 01/29/2023] Open
Abstract
PurposeTo investigate the time-period characteristics associated with morphologic changes in central serous chorioretinopathy (CSC) using fundus autofluorescence (FAF).Patients and methodsRetrospective, cross-sectional observational case series. Patients were classified into three groups: acute and chronic according to the onset of subjective symptoms of 6 weeks and sequelae patients who have history and symptoms but no serous retinal detachment (SRD). We compared FAF images to obtain characteristic findings according to the chronicity.ResultsA total of 52 eyes were included in this study. Acute CSC eyes were characterized by decreased FAF intensity at the leakage point in 13/22 eyes (56.5%) and staining patterns with various levels of fluorescence signal (hyperautofluorescent (10 eyes, 43.5%), hypoautofluorescent (1 eye, 4.3%), and minimal changes (12 eyes, 52.2%)) in the area of SRD. In chronic CSC eyes, hyperautofluorescent (14 eyes, 63.6%) or minimal changes (8 eyes, 36.4%) were observed in the area of SRD. Discrete dots with increased FAF intensity were observed in chronic CSC eyes (P<0.001). Eyes with sequelae of CSC had mixed FAF patterns over areas of retinal pigment epithelium (RPE) atrophy in seven eyes (100%, P<0.001)) and descending tracts which showed various FAF intensities according to the RPE and photoreceptor status (P<0.001).ConclusionFAF imaging patterns in CSC eyes differ according to the course of the disease, reflecting RPE and outer retinal changes. Detailed investigation using FAF could help to estimate the duration of CSC and determine the proper treatment modality.
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Affiliation(s)
- W J Lee
- Department of Ophthalmology, Hanyang University College of Medicine, Seoul, Korea
| | - J-H Lee
- Department of Ophthalmology, Hanyang University College of Medicine, Seoul, Korea
| | - B R Lee
- Department of Ophthalmology, Hanyang University College of Medicine, Seoul, Korea
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26
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Moon SY, Lee WJ, Lee SJ, Kim DW, Jang YH. Urticarial dermatitis unresponsive to conventional treatment: a hidden sign of pancreatic cancer. Clin Exp Dermatol 2016; 41:322-4. [PMID: 26332077 DOI: 10.1111/ced.12755] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/03/2015] [Indexed: 11/30/2022]
Affiliation(s)
- S Y Moon
- Department of Dermatology, Kyungpook National University School of Medicine, 200, Dong duk-ro, Jung-gu, Daegu, 700-721, Republic of Korea
| | - W J Lee
- Department of Dermatology, Kyungpook National University School of Medicine, 200, Dong duk-ro, Jung-gu, Daegu, 700-721, Republic of Korea
| | - S-J Lee
- Department of Dermatology, Kyungpook National University School of Medicine, 200, Dong duk-ro, Jung-gu, Daegu, 700-721, Republic of Korea
| | - D W Kim
- Department of Dermatology, Kyungpook National University School of Medicine, 200, Dong duk-ro, Jung-gu, Daegu, 700-721, Republic of Korea
| | - Y H Jang
- Department of Dermatology, Kyungpook National University School of Medicine, 200, Dong duk-ro, Jung-gu, Daegu, 700-721, Republic of Korea.
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27
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Jais B, Rebours V, Malleo G, Salvia R, Fontana M, Maggino L, Bassi C, Manfredi R, Moran R, Lennon AM, Zaheer A, Wolfgang C, Hruban R, Marchegiani G, Fernández Del Castillo C, Brugge W, Ha Y, Kim MH, Oh D, Hirai I, Kimura W, Jang JY, Kim SW, Jung W, Kang H, Song SY, Kang CM, Lee WJ, Crippa S, Falconi M, Gomatos I, Neoptolemos J, Milanetto AC, Sperti C, Ricci C, Casadei R, Bissolati M, Balzano G, Frigerio I, Girelli R, Delhaye M, Bernier B, Wang H, Jang KT, Song DH, Huggett MT, Oppong KW, Pererva L, Kopchak KV, Del Chiaro M, Segersvard R, Lee LS, Conwell D, Osvaldt A, Campos V, Aguero Garcete G, Napoleon B, Matsumoto I, Shinzeki M, Bolado F, Fernandez JMU, Keane MG, Pereira SP, Acuna IA, Vaquero EC, Angiolini MR, Zerbi A, Tang J, Leong RW, Faccinetto A, Morana G, Petrone MC, Arcidiacono PG, Moon JH, Choi HJ, Gill RS, Pavey D, Ouaïssi M, Sastre B, Spandre M, De Angelis CG, Rios-Vives MA, Concepcion-Martin M, Ikeura T, Okazaki K, Frulloni L, Messina O, Lévy P. Serous cystic neoplasm of the pancreas: a multinational study of 2622 patients under the auspices of the International Association of Pancreatology and European Pancreatic Club (European Study Group on Cystic Tumors of the Pancreas). Gut 2016; 65:305-12. [PMID: 26045140 DOI: 10.1136/gutjnl-2015-309638] [Citation(s) in RCA: 173] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2015] [Accepted: 05/11/2015] [Indexed: 02/07/2023]
Abstract
OBJECTIVES Serous cystic neoplasm (SCN) is a cystic neoplasm of the pancreas whose natural history is poorly known. The purpose of the study was to attempt to describe the natural history of SCN, including the specific mortality. DESIGN Retrospective multinational study including SCN diagnosed between 1990 and 2014. RESULTS 2622 patients were included. Seventy-four per cent were women, and median age at diagnosis was 58 years (16-99). Patients presented with non-specific abdominal pain (27%), pancreaticobiliary symptoms (9%), diabetes mellitus (5%), other symptoms (4%) and/or were asymptomatic (61%). Fifty-two per cent of patients were operated on during the first year after diagnosis (median size: 40 mm (2-200)), 9% had resection beyond 1 year of follow-up (3 years (1-20), size at diagnosis: 25 mm (4-140)) and 39% had no surgery (3.6 years (1-23), 25.5 mm (1-200)). Surgical indications were (not exclusive) uncertain diagnosis (60%), symptoms (23%), size increase (12%), large size (6%) and adjacent organ compression (5%). In patients followed beyond 1 year (n=1271), size increased in 37% (growth rate: 4 mm/year), was stable in 57% and decreased in 6%. Three serous cystadenocarcinomas were recorded. Postoperative mortality was 0.6% (n=10), and SCN's related mortality was 0.1% (n=1). CONCLUSIONS After a 3-year follow-up, clinical relevant symptoms occurred in a very small proportion of patients and size slowly increased in less than half. Surgical treatment should be proposed only for diagnosis remaining uncertain after complete workup, significant and related symptoms or exceptionally when exists concern with malignancy. This study supports an initial conservative management in the majority of patients with SCN. TRIAL REGISTRATION NUMBER IRB 00006477.
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Affiliation(s)
- B Jais
- Department of Gastroenterology and Pancreatology, Beaujon Hospital, AP-HP, Clichy, France
| | - V Rebours
- Department of Gastroenterology and Pancreatology, Beaujon Hospital, AP-HP, Clichy, France
| | - G Malleo
- The Pancreas Institute, G.B. Rossi Hospital, University of Verona Hospital Trust, Verona, Italy
| | - R Salvia
- The Pancreas Institute, G.B. Rossi Hospital, University of Verona Hospital Trust, Verona, Italy
| | - M Fontana
- The Pancreas Institute, G.B. Rossi Hospital, University of Verona Hospital Trust, Verona, Italy
| | - L Maggino
- The Pancreas Institute, G.B. Rossi Hospital, University of Verona Hospital Trust, Verona, Italy
| | - C Bassi
- The Pancreas Institute, G.B. Rossi Hospital, University of Verona Hospital Trust, Verona, Italy
| | - R Manfredi
- The Pancreas Institute, G.B. Rossi Hospital, University of Verona Hospital Trust, Verona, Italy
| | - R Moran
- Division of Gastroenterology and Hepatology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA Division of Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA Department of Pathology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - A M Lennon
- Division of Gastroenterology and Hepatology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA Division of Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA Department of Pathology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - A Zaheer
- Division of Gastroenterology and Hepatology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA Division of Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA Department of Pathology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - C Wolfgang
- Division of Gastroenterology and Hepatology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA Division of Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA Department of Pathology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - R Hruban
- Division of Gastroenterology and Hepatology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA Division of Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA Department of Pathology, The Sol Goldman Pancreatic Cancer Research Center, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - G Marchegiani
- Departments of Surgery and Pathology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - C Fernández Del Castillo
- Departments of Surgery and Pathology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - W Brugge
- Departments of Surgery and Pathology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Y Ha
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - M H Kim
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - D Oh
- Department of Gastroenterology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - I Hirai
- First Department of Surgery, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - W Kimura
- First Department of Surgery, Yamagata University Faculty of Medicine, Yamagata, Japan
| | - J Y Jang
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - S W Kim
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - W Jung
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - H Kang
- Division of Gastroenterology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - S Y Song
- Division of Gastroenterology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - C M Kang
- Department of Surgery, Yonsei University College of Medicine, Pancreaticobiliary Cancer Clinic, Yonsei Cancer Center, Severance Hospital, Seoul, Korea
| | - W J Lee
- Department of Surgery, Yonsei University College of Medicine, Pancreaticobiliary Cancer Clinic, Yonsei Cancer Center, Severance Hospital, Seoul, Korea
| | - S Crippa
- Pancreatic Surgery Unit, Department of Surgery, Polytechnic University of Marche Region, Ancona-Torrette, Italy
| | - M Falconi
- Pancreatic Surgery Unit, Department of Surgery, Polytechnic University of Marche Region, Ancona-Torrette, Italy
| | - I Gomatos
- NIHR Pancreas Biomedical Research Unit, Department of Molecular and Clinical Cancer Medicine, Royal Liverpool University Hospital, Institute of Translational Medicine, University of Liverpool, Liverpool, UK
| | - J Neoptolemos
- NIHR Pancreas Biomedical Research Unit, Department of Molecular and Clinical Cancer Medicine, Royal Liverpool University Hospital, Institute of Translational Medicine, University of Liverpool, Liverpool, UK
| | - A C Milanetto
- Department of Surgery, Oncology and Gastroenterology, 3rd Surgical Clinic, University of Padua, Padua, Italy
| | - C Sperti
- Department of Surgery, Oncology and Gastroenterology, 3rd Surgical Clinic, University of Padua, Padua, Italy
| | - C Ricci
- Department of Medical and Surgical Sciences (DIMEC), Alma Mater Studiorum-University of Bologna, S. Orsola-Malpighi Hospital, Bologna, Italy
| | - R Casadei
- Department of Medical and Surgical Sciences (DIMEC), Alma Mater Studiorum-University of Bologna, S. Orsola-Malpighi Hospital, Bologna, Italy
| | - M Bissolati
- Pancreatic Surgery Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - G Balzano
- Pancreatic Surgery Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - I Frigerio
- Hepato-Pancreato-Biliary Unit, Pederzoli Hospital, Peschiera del Garda, Italy
| | - R Girelli
- Hepato-Pancreato-Biliary Unit, Pederzoli Hospital, Peschiera del Garda, Italy
| | - M Delhaye
- Department of Gastroenterology, Hepatopancreatology and GI Oncology, Erasme University Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - B Bernier
- Department of Gastroenterology, Hepatopancreatology and GI Oncology, Erasme University Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - H Wang
- Institute of Hepatopancreatobiliary Surgery, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - K T Jang
- Department of Pathology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - D H Song
- Department of Pathology, Gyeongsang National University School of Medicine, Jinju, Korea
| | - M T Huggett
- Hepato-Pancreato-Biliary Unit, Freeman Hospital, Newcastle upon Tyne, UK
| | - K W Oppong
- Hepato-Pancreato-Biliary Unit, Freeman Hospital, Newcastle upon Tyne, UK
| | - L Pererva
- National Institute of Surgery and Transplantology named after Shalimov, Kiev, Ukraine
| | - K V Kopchak
- National Institute of Surgery and Transplantology named after Shalimov, Kiev, Ukraine
| | - M Del Chiaro
- Division of Surgery, Department of Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institutet at Center for Digestive Diseases, Karolinska University Hospital, Stockholm, Sweden
| | - R Segersvard
- Division of Surgery, Department of Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institutet at Center for Digestive Diseases, Karolinska University Hospital, Stockholm, Sweden
| | - L S Lee
- Division of Gastroenterology, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - D Conwell
- Division of Gastroenterology, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - A Osvaldt
- Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - V Campos
- Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | | | - B Napoleon
- Hôpital Privé Mermoz, Gastroentérologie, Lyon, France
| | - I Matsumoto
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - M Shinzeki
- Division of Hepato-Biliary-Pancreatic Surgery, Department of Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - F Bolado
- Gastroenterology Department, Hospital de Navarra, Pamplona, Spain
| | | | - M G Keane
- Department of Gastroenterology and Hepatology, University College Hospital, London, UK
| | - S P Pereira
- Department of Gastroenterology and Hepatology, University College Hospital, London, UK
| | - I Araujo Acuna
- Department of Gastroenterology, Hospital Clinic, CIBEREHD, IDIBAPS, University of Barcelona, Barcelona, Spain
| | - E C Vaquero
- Department of Gastroenterology, Hospital Clinic, CIBEREHD, IDIBAPS, University of Barcelona, Barcelona, Spain
| | - M R Angiolini
- Department of Pancreatic Surgery, Humanitas Research Hospital, Rozzano, Milan, Italy
| | - A Zerbi
- Department of Pancreatic Surgery, Humanitas Research Hospital, Rozzano, Milan, Italy
| | - J Tang
- Gastroenterology and Liver Services, Concord Hospital, Sydney, New South Wales, Australia
| | - R W Leong
- Gastroenterology and Liver Services, Concord Hospital, Sydney, New South Wales, Australia
| | - A Faccinetto
- Radiological Department, General Hospital Cá Foncello, Treviso, Italy
| | - G Morana
- Radiological Department, General Hospital Cá Foncello, Treviso, Italy
| | - M C Petrone
- Division of Gastroenterology and Gastrointestinal Endoscopy, San Raffaele Scientific Institute, Milan, Italy
| | - P G Arcidiacono
- Division of Gastroenterology and Gastrointestinal Endoscopy, San Raffaele Scientific Institute, Milan, Italy
| | - J H Moon
- Department of Internal Medicine, Digestive Disease Center and Research Institute, SoonChunHyang University School of Medicine, Bucheon, Korea
| | - H J Choi
- Department of Internal Medicine, Digestive Disease Center and Research Institute, SoonChunHyang University School of Medicine, Bucheon, Korea
| | - R S Gill
- Department of Gastroenterology, Bankstown-Lidcombe Hospital, Bankstown, New South Wales, Australia
| | - D Pavey
- Department of Gastroenterology, Bankstown-Lidcombe Hospital, Bankstown, New South Wales, Australia
| | - M Ouaïssi
- Department of Digestive Surgery, Timone Hospital, Marseille, France
| | - B Sastre
- Department of Digestive Surgery, Timone Hospital, Marseille, France
| | - M Spandre
- Gastrohepatology Department, San Giovanni Battista Molinette Hospital, University of Turin, Turin, Italy
| | - C G De Angelis
- Gastrohepatology Department, San Giovanni Battista Molinette Hospital, University of Turin, Turin, Italy
| | - M A Rios-Vives
- Gastroenterology Department, Hospital de la Santa Creu i Sant Pau, Institut de Reçerca-IIB Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - M Concepcion-Martin
- Gastroenterology Department, Hospital de la Santa Creu i Sant Pau, Institut de Reçerca-IIB Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - T Ikeura
- The Third Department of Internal Medicine, Division of Gastroenterology and Hepatology, Kansai Medical University, Osaka, Japan
| | - K Okazaki
- The Third Department of Internal Medicine, Division of Gastroenterology and Hepatology, Kansai Medical University, Osaka, Japan
| | - L Frulloni
- Department of Medicine, Pancreas Center, University of Verona, Verona, Italy
| | - O Messina
- Department of Medicine, Pancreas Center, University of Verona, Verona, Italy
| | - P Lévy
- Department of Gastroenterology and Pancreatology, Beaujon Hospital, AP-HP, Clichy, France
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Wee JH, Park JH, Choi SP, Woo SH, Lee WJ, So BH, Park KN. Clinical features of emergency department patients with depression who had attempted to commit suicide by poisoning. Niger J Clin Pract 2016; 19:41-5. [PMID: 26755217 DOI: 10.4103/1119-3077.164329] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Many patients present to the emergency department (ED) complaining of intentional poisoning. Of those, some have major depressive disorder (MDD) in their medical history. The aim of this study was to investigate the prevalence of MDD patients who were treated for poisoning in the ED. MATERIALS AND METHODS A retrospective review was performed on 268 patients who were treated with poisoning between July 2007 and November 2011. Of these patients, we only included those who were over 18 years of age. Information regarding age, gender, cause, time of ingestion, type of drug, history of attempting suicide, and outcome, among other characteristics, was collected and compared to patients who did not have MDD. RESULTS A total of 244 patients were included in this study. Of those, 52 patients (21.3%) had a history of MDD. Compared to non-MDD patients, a majority (34.6% vs. 19.8%) of those in the MDD group had a history of suicide attempts (P = 0.027), and 34 (65.4% in the MDD group vs. 34.4% in the non-MDD group) took more than two types of drugs (P < 0.001). There were no differences in age, sex, time of ingestion or disease severity between MDD and non-MDD patients. CONCLUSION In poisoning patients with MDD, physicians in the ED must consider that they have a higher tendency to show suicidal behavior and to have ingested multiple types of drugs.
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Affiliation(s)
| | | | | | - S H Woo
- Department of Emergency Medicine, Incheon St. Mary's Hospital, College of Medicine, Seoul, South Korea
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Woo SH, Lee WJ, Seol SH, Kim DH, Wee JH, Choi SP, Jeong WJ, Oh SH, Kyong YY, Kim SW. Physician and nurse knowledge about patient radiation exposure in the emergency department. Niger J Clin Pract 2016; 19:502-7. [DOI: 10.4103/1119-3077.183298] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Kim SH, Chong JU, Lim JH, Choi GH, Kang CM, Choi JS, Lee WJ, Kim KS. Optimal assessment of lymph node status in gallbladder cancer. Eur J Surg Oncol 2015; 42:205-10. [PMID: 26614023 DOI: 10.1016/j.ejso.2015.10.013] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Revised: 10/09/2015] [Accepted: 10/29/2015] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Lymph node (LN) metastasis is an important prognostic factor in gallbladder cancer (GBCA). LN status has been adopted as a critical element of staging systems. However, the influence of total lymph node count (TLNC) remains unclear. We determined the optimal minimum TLNC and compared the prognostic significance of LN status indices in GBCA. METHODS We retrospectively reviewed medical records of 128 patients with T2 or greater GBCA who underwent LN dissection. We analyzed overall survival (OS) and relevance of the number of metastatic LNs, ratio of metastatic LNs to retrieved LNs (LNR), and TLNC in predicting OS. RESULTS The median OS durations were 120, 35, and 18 months in T2, T3, and T4 GBCA. Five-year OS rates were 73%, 43%, and 0% in T2, T3, and T4 GBCA. LN status did not significantly impact OS in T2 or T4 GBCA. However, all LN indices were significantly correlated with OS in T3 GBCA. Furthermore, multivariate analysis revealed that a metastatic LN count of more than four and a TLNC of more than eight were independent prognostic factors of OS in T3 GBCA. CONCLUSIONS TLNC and the number of positive LNs may be more important prognostic factors than LNR in T3 GBCA. Additionally, accurate staging may not be achieved in cases of T3 GBCA if the total number of retrieved LNs is less than eight. Thus, to ensure proper staging, we recommend that surgeons harvest more than eight LNs in patients with T3 GBCA.
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Affiliation(s)
- S H Kim
- Department of Surgery, Yonsei University Wonju College of Medicine, Wonju Severance Christian Hospital, Wonju, Republic of Korea
| | - J U Chong
- Department of Surgery, Yonsei University College of Medicine, Yonsei University Health System, Seoul, Republic of Korea
| | - J H Lim
- Department of Surgery, Yonsei University College of Medicine, Yongin Severance Hospital, Yongin, Republic of Korea
| | - G H Choi
- Department of Surgery, Yonsei University College of Medicine, Yonsei University Health System, Seoul, Republic of Korea
| | - C M Kang
- Department of Surgery, Yonsei University College of Medicine, Yonsei University Health System, Seoul, Republic of Korea
| | - J S Choi
- Department of Surgery, Yonsei University College of Medicine, Yonsei University Health System, Seoul, Republic of Korea
| | - W J Lee
- Department of Surgery, Yonsei University College of Medicine, Yonsei University Health System, Seoul, Republic of Korea
| | - K S Kim
- Department of Surgery, Yonsei University College of Medicine, Yonsei University Health System, Seoul, Republic of Korea.
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Ma JW, Lee WJ, Bae JM, Jeong KS, Oh SH, Kim JH, Kim SH, Seo JH, Ahn JP, Kim H, Cho MH. Carrier Mobility Enhancement of Tensile Strained Si and SiGe Nanowires via Surface Defect Engineering. Nano Lett 2015; 15:7204-7210. [PMID: 26492109 DOI: 10.1021/acs.nanolett.5b01634] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Changes in the carrier mobility of tensile strained Si and SiGe nanowires (NWs) were examined using an electrical push-to-pull device (E-PTP, Hysitron). The changes were found to be closely related to the chemical structure at the surface, likely defect states. As tensile strain is increased, the resistivity of SiGe NWs deceases in a linear manner. However, the corresponding values for Si NWs increased with increasing tensile strain, which is closely related to broken bonds induced by defects at the NW surface. Broken bonds at the surface, which communicate with the defect state of Si are critically altered when Ge is incorporated in Si NW. In addition, the number of defects could be significantly decreased in Si NWs by incorporating a surface passivated Al2O3 layer, which removes broken bonds, resulting in a proportional decrease in the resistivity of Si NWs with increasing strain. Moreover, the presence of a passivation layer dramatically increases the extent of fracture strain in NWs, and a significant enhancement in mobility of about 2.6 times was observed for a tensile strain of 5.7%.
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Affiliation(s)
- J W Ma
- Institute of Physics and Applied Physics, Yonsei University , Seoul 120-749, Korea
| | - W J Lee
- Institute of Physics and Applied Physics, Yonsei University , Seoul 120-749, Korea
| | - J M Bae
- Institute of Physics and Applied Physics, Yonsei University , Seoul 120-749, Korea
| | - K S Jeong
- Institute of Physics and Applied Physics, Yonsei University , Seoul 120-749, Korea
| | - S H Oh
- Institute of Physics and Applied Physics, Yonsei University , Seoul 120-749, Korea
| | - J H Kim
- Institute of Physics and Applied Physics, Yonsei University , Seoul 120-749, Korea
| | - S-H Kim
- Nano Analysis Center, KIST , Seoul 130-650, Korea
| | - J-H Seo
- Nano Analysis Center, KIST , Seoul 130-650, Korea
| | - J-P Ahn
- Nano Analysis Center, KIST , Seoul 130-650, Korea
| | - H Kim
- School of Advanced Materials Science and Engineering, Sungkyunkwan University , Suwon 440-746, Korea
| | - M-H Cho
- Institute of Physics and Applied Physics, Yonsei University , Seoul 120-749, Korea
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Yoo T, Ham SA, Hwang JS, Lee WJ, Paek KS, Oh JW, Kim JH, Do JT, Han CW, Kim JH, Seo HG. Peroxisome proliferator-activated receptor δ inhibits Porphyromonas gingivalis lipopolysaccharide-induced activation of matrix metalloproteinase-2 by downregulating NADPH oxidase 4 in human gingival fibroblasts. Mol Oral Microbiol 2015; 31:398-409. [PMID: 26403493 DOI: 10.1111/omi.12137] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/21/2015] [Indexed: 02/02/2023]
Abstract
We investigated the roles of peroxisome proliferator-activated receptor δ (PPARδ) in Porphyromonas gingivalis-derived lipopolysaccharide (Pg-LPS)-induced activation of matrix metalloproteinase 2 (MMP-2). In human gingival fibroblasts (HGFs), activation of PPARδ by GW501516, a specific ligand of PPARδ, inhibited Pg-LPS-induced activation of MMP-2 and generation of reactive oxygen species (ROS), which was associated with reduced expression of NADPH oxidase 4 (Nox4). These effects were significantly smaller in the presence of small interfering RNA targeting PPARδ or the specific PPARδ inhibitor GSK0660, indicating that PPARδ is involved in these events. In addition, modulation of Nox4 expression by small interfering RNA influenced the effect of PPARδ on MMP-2 activity, suggesting a mechanism in which Nox4-derived ROS modulates MMP-2 activity. Furthermore, c-Jun N-terminal kinase and p38, but not extracellular signal-regulated kinase, mediated PPARδ-dependent inhibition of MMP-2 activity in HGFs treated with Pg-LPS. Concomitantly, PPARδ-mediated inhibition of MMP-2 activity was associated with the restoration of types I and III collagen to levels approaching those in HGFs not treated with Pg-LPS. These results indicate that PPARδ-mediated downregulation of Nox4 modulates cellular redox status, which in turn plays a critical role in extracellular matrix homeostasis through ROS-dependent regulation of MMP-2 activity.
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Affiliation(s)
- T Yoo
- Department of Animal Biotechnology, Konkuk University, Seoul, Korea
| | - S A Ham
- Department of Animal Biotechnology, Konkuk University, Seoul, Korea
| | - J S Hwang
- Department of Animal Biotechnology, Konkuk University, Seoul, Korea
| | - W J Lee
- Department of Animal Biotechnology, Konkuk University, Seoul, Korea
| | - K S Paek
- Department of Nursing, Semyung University, Chungbuk, Korea
| | - J W Oh
- Department of Animal Biotechnology, Konkuk University, Seoul, Korea
| | - J H Kim
- Department of Animal Biotechnology, Konkuk University, Seoul, Korea
| | - J T Do
- Department of Animal Biotechnology, Konkuk University, Seoul, Korea
| | - C W Han
- Department of Internal Medicine, Pusan National University School of Korean Medicine, Yangsan, Kyeongnam, Korea
| | - J H Kim
- Department of Biomedical Science, CHA University, Seongnam, Gyeonggi-Do, Korea
| | - H G Seo
- Department of Animal Biotechnology, Konkuk University, Seoul, Korea
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Kim JM, Park KY, Lee WJ, Byun JS, Kim JK, Park MS, Ahn SW, Shin HW. The cortical contrast accumulation from brain computed tomography after endovascular treatment predicts symptomatic hemorrhage. Eur J Neurol 2015; 22:1453-8. [PMID: 26130213 DOI: 10.1111/ene.12764] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Accepted: 05/07/2015] [Indexed: 11/27/2022]
Abstract
BACKGROUND AND PURPOSE The prognostic value of contrast accumulation from non-contrast brain computed tomography taken immediately after endovascular reperfusion treatment in acute ischaemic stroke patients to predict symptomatic hemorrhage was studied. METHODS Between July 2007 and August 2014, acute anterior circulation ischaemic stroke patients who were treated by intra-arterial thrombolysis or thrombectomy were included. Contrast accumulation was defined as a high attenuation area from non-contrast brain computed tomography immediately taken after endovascular reperfusion treatment, and patients were categorized into three groups according to the presence and location of contrast: (i) negative, (ii) cortical involvement and (iii) non-cortical involvement. The rates of symptomatic hemorrhage after 24 h and functional outcome at discharge were compared between patients with and without cortical involvement. RESULTS Of 64 patients who were treated by endovascular intervention, contrast accumulation was detected in 56, including 33 patients with cortical involvement and 23 patients without cortical involvement. The cortical involvement pattern was more frequently associated with symptomatic hemorrhage (13 vs. 1 patient, P = 0.003) and with grave outcome at discharge with modified Rankin Scale 5 or 6 (14 vs. 4, P = 0.048) than the non-cortical involvement group. Multivariate logistic regression analysis including initial collateral status and occlusion site disclosed that cortical involvement pattern independently predicted symptomatic hemorrhage after endovascular treatment (odds ratio 19.0, confidence interval 1.6-227.6, P = 0.020). CONCLUSION Our study provides evidence that the cortical involvement of contrast accumulation is associated with symptomatic hemorrhage after endovascular reperfusion treatment.
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Affiliation(s)
- J M Kim
- Department of Neurology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - K Y Park
- Department of Neurology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - W J Lee
- Department of Neuroradiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - J S Byun
- Department of Neuroradiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - J K Kim
- Department of Neuroradiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - M S Park
- Department of Neurology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - S W Ahn
- Department of Neurology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - H W Shin
- Department of Neurology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
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Ko JH, Peck KR, Lee WJ, Lee JY, Cho SY, Ha YE, Kang CI, Chung DR, Jung CW, Kang ES, Song JH. Generic piperacillin/tazobactam is not associated with galactomannan false-positivity in adult patients with cancer: a case-control study. Eur J Clin Microbiol Infect Dis 2015; 34:1437-41. [PMID: 25894983 DOI: 10.1007/s10096-015-2370-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Accepted: 03/23/2015] [Indexed: 01/16/2023]
Abstract
Recent products of piperacillin/tazobactam (PTZ) from the original manufacturer, previously considered a major cause of galactomannan (GM) false-positivity, are reported not to be related to it. However, data regarding generic PTZ are limited and controversial. To evaluate the effect of generic PTZ on GM false-positivity in Korea, we performed a case-control study in adult patients with cancer. A case-control study was designed. Electronic medical records of cancer patients who were admitted and tested for serum GM between March and June 2014 at a tertiary care university hospital were reviewed. During the study period, a single generic PTZ (C manufacturer, Korea) was used. Patients who received PTZ within 24 h prior to serum GM testing were enrolled. Age- and GM test date-matched non-PTZ patients were selected as controls. A total of 110 patients received PTZ within 24 h prior to serum GM testing during the study period. The GM optical density index (ODI) of the PTZ group did not vary significantly from that of the control group (p = 0.251). The percentage of false-positive patients in the PTZ group was also similar to that of the control group (p = 0.538). There was no statistical relationship between GM ODI titer and time interval from PTZ administration (p = 0.095) or cumulative PTZ dose (p = 0.416). In a case-control study that evaluated 220 patients, a generic PTZ in Korea was not related to GM false-positivity.
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Affiliation(s)
- J-H Ko
- Division of Infectious Diseases, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, Republic of Korea
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Lee WJ, Won KH, Won CH, Chang SE, Choi JH, Moon KC, Park CS, Huh J, Suh C, Lee MW. Secondary cutaneous lymphoma: comparative clinical features and survival outcome analysis of 106 cases according to lymphoma cell lineage. Br J Dermatol 2015; 173:134-45. [PMID: 25556641 DOI: 10.1111/bjd.13582] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/27/2014] [Indexed: 11/26/2022]
Abstract
BACKGROUND The relative frequency, clinical features and survival outcomes of secondary cutaneous lymphoma remain poorly understood. OBJECTIVES To determine the clinical characteristics and survival outcomes of secondary cutaneous lymphoma. MATERIALS AND METHODS The present retrospective cohort study included all 106 patients who presented with secondary cutaneous lymphoma. Patient medical records were reviewed to determine the clinical features, survival outcomes and prognostic factors. Survival outcomes were analysed by using the Kaplan-Meier method and comparisons between lymphoma cell lineages [T or natural killer (T-/NK)-cell vs. B-cell lymphoma] were performed using the log-rank test. RESULTS Secondary cutaneous lymphomas consisted of mature T-/NK-cell lymphomas (56%), mature B-cell lymphomas (35%), immature haematopoietic malignancies (8%) and Hodgkin lymphoma (1%). The T-/NK-cell lineage lymphoma cases were more likely to have multiple and disseminated skin lesions than the B-cell lineage lymphoma cases. The lymphoma cell lineage did not significantly influence survival outcomes. Patients who showed cutaneous involvement within 6 months of the initial diagnosis of primary disease had a poorer overall survival (OS) outcome than patients who developed cutaneous dissemination 6 or more months after the initial diagnosis (P < 0.001). Patients with disseminated skin lesions had a poorer OS than patients with localized skin lesions (P = 0.028). The two lymphoma cell lineages differed in terms of prognostic factors that influenced survival. CONCLUSIONS Skin lesion characteristics such as time point of appearance and extent affect the survival outcomes of secondary cutaneous lymphoma. Cell lineage did not influence survival outcomes but the two lineages are associated with different prognostic factors.
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Affiliation(s)
- W J Lee
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, 388-1 Pungnapdong Songpagu, Seoul, 138-736, Korea
| | - K H Won
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, 388-1 Pungnapdong Songpagu, Seoul, 138-736, Korea
| | - C H Won
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, 388-1 Pungnapdong Songpagu, Seoul, 138-736, Korea
| | - S E Chang
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, 388-1 Pungnapdong Songpagu, Seoul, 138-736, Korea
| | - J H Choi
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, 388-1 Pungnapdong Songpagu, Seoul, 138-736, Korea
| | - K C Moon
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, 388-1 Pungnapdong Songpagu, Seoul, 138-736, Korea
| | - C-S Park
- Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, 388-1 Pungnapdong Songpagu, Seoul, 138-736, Korea
| | - J Huh
- Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, 388-1 Pungnapdong Songpagu, Seoul, 138-736, Korea
| | - C Suh
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, 388-1 Pungnapdong Songpagu, Seoul, 138-736, Korea
| | - M W Lee
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, 388-1 Pungnapdong Songpagu, Seoul, 138-736, Korea
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Liu GX, Liu A, Meng Y, Shan FK, Shin BC, Lee WJ, Cho CR. Annealing Dependence of Solution-Processed Ultra-Thin ZrOx Films for Gate Dielectric Applications. J Nanosci Nanotechnol 2015; 15:2185-2191. [PMID: 26413638 DOI: 10.1166/jnn.2015.10228] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Ultra-thin ZrOx thin films on Si substrates were prepared by sol-gel technique and processed with different methods (baked on hot plate at 150 °C, annealed at 500 °C in furnace, and photo-annealed under UV light). The decomposition of the organic groups and the formation of Zr-O bonding in the ZrOx thin films were confirmed by Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. It is found that the ZrOx thin film annealed under UV light shows decent characteristics, including an ultra-small surface roughness, a low leakage current density of 10(-9) A/cm2 at 1 MV/cm, a large breakdown electric field of 9.5 MV/cm, and a large areal capacitance of 775 nF/cm2.
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Hwang JS, Lee WJ, Kang ES, Ham SA, Yoo T, Paek KS, Lim DS, Do JT, Seo HG. Ligand-activated peroxisome proliferator-activated receptor-δ and -γ inhibit lipopolysaccharide-primed release of high mobility group box 1 through upregulation of SIRT1. Cell Death Dis 2014; 5:e1432. [PMID: 25275593 PMCID: PMC4649513 DOI: 10.1038/cddis.2014.406] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Revised: 06/25/2014] [Accepted: 07/22/2014] [Indexed: 12/24/2022]
Abstract
Peroxisome proliferator-activated receptors (PPARs) inhibit lipopolysaccharide (LPS)-primed release of high mobility group box 1 (HMGB1), a late proinflammatory mediator, but the underlying molecular mechanism is not completely understood. In this study, we demonstrated that the inhibition of HMGB1 release by PPAR-δ and -γ is associated with the deacetylase activity of SIRT1. Ligand-activated PPAR-δ and -γ inhibited LPS-primed release of HMGB1, concomitant with elevation in SIRT1 expression and promoter activity. These effects were significantly reduced in the presence of small interfering (si)RNAs against PPAR, indicating that PPAR-δ and -γ are involved in both HMGB1 release and SIRT1 expression. In addition, modulation of SIRT1 expression and activity by siRNA or chemicals correspondingly influenced the effects of PPARs on HMGB1 release, suggesting a mechanism in which SIRT1 modulates HMGB1 release. Furthermore, we showed for the first time that HMGB1 acetylated in response to LPS or p300/CBP-associated factor (PCAF) is an effective substrate for SIRT1, and that deacetylation of HMGB1 is responsible for blockade of HMGB1 release in macrophages. Finally, acetylation of HMGB1 was elevated in mouse embryonic fibroblasts from SIRT1-knockout mice, whereas this increase was completely reversed by ectopic expression of SIRT1. These results indicate that PPAR-mediated upregulation of SIRT1 modulates the status of HMGB1 acetylation, which, in turn, has a critical role in the cellular response to inflammation through deacetylation-mediated regulation of HMGB1 release.
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Affiliation(s)
- J S Hwang
- Department of Animal Biotechnology, Konkuk University, Seoul, Republic of Korea
| | - W J Lee
- Department of Animal Biotechnology, Konkuk University, Seoul, Republic of Korea
| | - E S Kang
- Department of Animal Biotechnology, Konkuk University, Seoul, Republic of Korea
| | - S A Ham
- Department of Animal Biotechnology, Konkuk University, Seoul, Republic of Korea
| | - T Yoo
- Department of Animal Biotechnology, Konkuk University, Seoul, Republic of Korea
| | - K S Paek
- Department of Nursing, Semyung University, Jecheon, Republic of Korea
| | - D S Lim
- Department of Applied Bioscience, College of Life Science, CHA University, Seongnam, Korea
| | - J T Do
- Department of Animal Biotechnology, Konkuk University, Seoul, Republic of Korea
| | - H G Seo
- Department of Animal Biotechnology, Konkuk University, Seoul, Republic of Korea
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Lee WJ, Sobrin L, Kang MH, Seong M, Kim YJ, Yi JH, Miller JW, Cho HY. Ischemic diabetic retinopathy as a possible prognostic factor for chronic kidney disease progression. Eye (Lond) 2014; 28:1119-25. [PMID: 24993319 DOI: 10.1038/eye.2014.130] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2013] [Accepted: 04/24/2014] [Indexed: 01/20/2023] Open
Abstract
PURPOSE To assess the value of diabetic retinopathy (DR) severity as a possible predictive prognostic factor for the progression of chronic kidney disease (CKD). PATIENTS AND METHODS Retrospective cohort study. Patients (51) who were initially diagnosed with DR and CKD were enrolled and their medical records were evaluated. The following ophthalmic factors were assessed by fluorescein angiography at the initial visit: area of capillary nonperfusion, presence of neovascularization and vitreous hemorrhage, and DR grade. The effect of these factors on CKD progression over the 2-year period of the study, defined as doubling of serum creatinine or the development of end-stage renal disease requiring dialysis or renal transplant, was evaluated. RESULTS The study included 51 patients with DR and CKD; of these, 11 patients (21.6%) were found to have proliferative DR (PDR) and seven patients (13.7%) had high-risk PDR at baseline. Patients with ischemic DR, who showed extensive capillary nonperfusion (≥ 10 optic disc areas) in the retina, had a greater risk for CKD progression (hazard ratio = 6.64; P = 0.002). CONCLUSION We found that extensive capillary nonperfusion in the retina greatly increased the risk of progression of CKD in patients with DR. This suggests that the retina and the kidney may have shared risk factors for microvascular disease secondary to diabetes mellitus, and emphasizes the need for a team approach to diabetes care.
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Affiliation(s)
- W J Lee
- Department of Ophthalmology, Hanyang University College of Medicine, Hanyang University Guri Hospital, Guri-City, South Korea
| | - L Sobrin
- Department of Ophthalmology, Harvard Medical School, Massachusetts Eye and Ear Infirmary, Uveitis and Retina Services, Boston, MA, USA
| | - M H Kang
- Department of Ophthalmology, Hanyang University College of Medicine, Hanyang University Guri Hospital, Guri-City, South Korea
| | - M Seong
- Department of Ophthalmology, Hanyang University College of Medicine, Hanyang University Guri Hospital, Guri-City, South Korea
| | - Y J Kim
- Department of Ophthalmology, Hanyang University College of Medicine, Hanyang University Guri Hospital, Guri-City, South Korea
| | - J-H Yi
- Department of Nephrology, Hanyang University College of Medicine, Hanyang University Guri Hospital, Guri-City, South Korea
| | - J W Miller
- Department of Ophthalmology, Harvard Medical School, Massachusetts Eye and Ear Infirmary, Uveitis and Retina Services, Boston, MA, USA
| | - H Y Cho
- 1] Department of Ophthalmology, Hanyang University College of Medicine, Hanyang University Guri Hospital, Guri-City, South Korea [2] Department of Ophthalmology, Harvard Medical School, Massachusetts Eye and Ear Infirmary, Uveitis and Retina Services, Boston, MA, USA
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Abstract
Objective miR-146a may play important roles in the pathogenesis of systemic lupus erythematosus (SLE). Several studies have examined the association of miR-146a gene polymorphisms with SLE, but these studies have shown inconclusive results. To verify whether an association exists, we conducted a meta-analysis of all relevant reports cited in MEDLINE/PubMed and EMBASE before August 2013. Methods Meta-analyses were performed on three published studies of the association between the miR-146a rs57095329 SNP and SLE for 5934 patients with SLE and 5591 controls as well as on four published studies of the association between miR-146a rs2910164 SNP and SLE for 2505 patients with SLE and 3248 controls. In addition, two studies involving 1920 SLE patients and 2472 controls were included in a meta-analysis of the association between miR-146a rs2431697 SNP and SLE. Summary odds ratios (ORs) and 95% confidence intervals (CIs) were pooled by the inverse of their variance. Results Of three SNPs analyzed, rs57095329 (OR 1.25, 95%CI 1.17–1.35) and rs2431697 (OR 1.24, 95% CI 1.13–1.37) were genetically associated with SLE. However, no significant association was found between rs2910164 and SLE susceptibility (OR 0.98, 95% CI 0.90–1.06). There was no significant heterogeneity across studies and no evidence of publication bias. Conclusions The results of our meta-analysis suggest that miR-146a rs57095329 and rs2431697 SNPs are associated with SLE susceptibility. In addition, our results suggest that there is an ethnical difference between Asian and European populations in the association between miR-146a SNPs and SLE susceptibility.
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Affiliation(s)
- JD Ji
- Rheumatology, College of Medicine, Korea University, Seoul, South Korea
| | - ES Cha
- Department of Preventive Medicine, College of Medicine, Korea University, Seoul, South Korea
| | - WJ Lee
- Department of Preventive Medicine, College of Medicine, Korea University, Seoul, South Korea
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Lee MJ, Jung CH, Jang JE, Hwang JY, Park DH, Park TS, Lee WJ. Successful endoscopic ultrasound-guided ethanol ablation of multiple insulinomas accompanied with multiple endocrine neoplasia type 1. Intern Med J 2014; 43:948-50. [PMID: 23919339 DOI: 10.1111/imj.12208] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2012] [Accepted: 05/13/2013] [Indexed: 11/28/2022]
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Cha DI, Kim YK, Choi SY, Lim SH, Choi D, Lee WJ. Pancreatic ductal adenocarcinoma: prevalence and diagnostic value of dark choledochal ring sign on T2-weighted MRI. Clin Radiol 2014; 69:416-23. [PMID: 24457015 DOI: 10.1016/j.crad.2013.11.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2013] [Revised: 10/30/2013] [Accepted: 11/18/2013] [Indexed: 11/25/2022]
Abstract
AIM To investigate the dark choledochal ring sign on T2-weighted imaging (T2WI) as an indicator for pancreatic ductal adenocarcinoma (PDAC) among periampullary carcinomas. MATERIALS AND METHODS Sixty patients with surgically confirmed periampullary cancers [30 PDACs, 15 distal common bile duct (CBD) cancers, 13 ampullary cancers, and two duodenal cancers] who underwent liver magnetic resonance imaging (MRI) were included in this study. Two reviewers independently evaluated unenhanced and gadoxetic acid-enhanced MRI (T1WI image set), and a combined T2WI and T1WI image set for differentiation between PDAC and other periampullary carcinomas using a rating scale, and the presence of the dark choledochal ring sign on T2WI, for all 60 tumours. RESULTS In PDAC, the dark choledochal ring sign on T2WI was considered positive in 23 cases by observer 1 and 24 cases by observer 2, but only in one or two CBD cancers, as determined by each observer, respectively. This resulted in sensitivities of 76.7% and 80% and specificities of 96.7% and 93.3% for observer 1 and 2, respectively, in the diagnosis of PDAC. Adding T2WI correctly led to a change of diagnosis in three and four cases of PDAC by each observer, respectively. Thus, there were significant differences between the two image sets for both observers in distinguishing between PDAC and other periampullary carcinomas (p = 0.02). CONCLUSION The presence of the dark choledochal ring sign on axial T2WI could be a complementary imaging feature indicative of PDAC to differentiate PDAC from other periampullary carcinomas at MRI.
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Affiliation(s)
- D I Cha
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Y K Kim
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
| | - S-Y Choi
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - S H Lim
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - D Choi
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - W J Lee
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
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Kang CM, Chung YE, Jung MJ, Hwang HK, Choi SH, Lee WJ. Splenic vein thrombosis and pancreatic fistula after minimally invasive distal pancreatectomy. Br J Surg 2013; 101:114-9. [PMID: 24327328 DOI: 10.1002/bjs.9366] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/30/2013] [Indexed: 12/12/2022]
Abstract
BACKGROUND This study aimed to investigate the clinical relevance of splenic vein thrombosis (SVT) in the splenic vein remnant following minimally invasive distal pancreatosplenectomy (DPS). METHODS Medical records of patients who underwent laparoscopic or robotic distal pancreatectomy (DP) with or without splenectomy between January 2006 and August 2012 were reviewed. Rates of SVT and clinically relevant postoperative pancreatic fistula (POPF) were compared in a group of patients undergoing DPS and a group having spleen-preserving DP. RESULTS Seventy-nine patients had minimally invasive DP, of whom 38 (48 per cent) developed SVT in the splenic vein remnant. DPS was associated with POPF (P = 0.001) and SVT (P < 0.001). SVT length was closely related to the amount of peripancreatic fluid collection (P = 0.025) and POPF (P = 0.045). In a comparison of splenic vessel-sacrificing, spleen-preserving DP and DPS, postoperative platelet count was significantly higher in the DPS group (P < 0.001). In addition, grade of SVT (P = 0.092) and POPF (P = 0.065) tended to be associated with DPS, suggesting that SVT may be related to both splenectomy and POPF. CONCLUSION Minimally invasive DPS is associated with SVT and POPF. Preservation of the spleen should be considered when treating patients with benign and borderline malignant tumours of the distal pancreas.
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Affiliation(s)
- C M Kang
- Department of Surgery, Yonsei University College of Medicine, Seoul, Korea; Department of Pancreaticobiliary Cancer Clinic, Institute of Gastroenterology, Severance Hospital, Seoul, Korea
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Hwang J, Kim YK, Choi D, Rhim H, Lee WJ, Hong SS, Kim HJ, Chang YW. Gadoxetic acid-enhanced MRI for T-staging of gallbladder carcinoma: emphasis on liver invasion. Br J Radiol 2013; 87:20130608. [PMID: 24288397 DOI: 10.1259/bjr.20130608] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
OBJECTIVE To evaluate the diagnostic performance of gadoxetic acid-enhanced MRI with an emphasis on the usefulness of the hepatobiliary phase (HBP) in T-staging of gallbladder carcinoma. METHODS 66 patients with surgically confirmed gallbladder carcinoma underwent MRI. Two radiologists independently reviewed two sets of gadoxetic acid-enhanced MRI without and with the HBP. Local tumour spread was evaluated according to T-staging, and the results were compared with pathological findings. The diagnostic performance of two image sets to differentiate each T-stage was compared. RESULTS The sensitivities of MRI with the HBP to differentiate T1 vs ≥ T2 lesions, ≤ T2 vs ≥ T3 lesions and ≤ T3 vs T4 lesions were 96.3%, 85.7% and 100% for Observer 1 and 92.6%, 95.2% and 100% for Observer 2, respectively (p<0.0001). By adding the HBP, the sensitivities to differentiate ≤ T2 vs ≥ T3 lesions were increased from 66.7% to 85.7% for Observer 1 and from 81.0% to 95.2% for Observer 2, although there was no significant difference (p>0.05). The overall accuracies for T-staging were increased from 80.3% to 86.4% for Observer 1, a statistically significant degree (p=0.046), and from 83.8% to 87.9% for Observer 2 (p>0.05). The k-value for the two observers indicated excellent agreement. CONCLUSION Gadoxetic acid-enhanced MRI provided acceptable diagnostic performance for T-staging of gallbladder carcinoma. Addition of the HBP aids in the detection of liver invasion. ADVANCES IN KNOWLEDGE In the T-staging of gallbladder carcinoma, gadoxetic acid-enhanced MRI with the HBP may enhance detection of liver invasion.
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Affiliation(s)
- J Hwang
- Department of Radiology, Soonchunhyang University Seoul Hospital, Seoul, Republic of Korea
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Yu JH, Shin MS, Kim DJ, Lee JR, Yoon SY, Kim SG, Koh EH, Lee WJ, Park JY, Kim MS. Enhanced carbohydrate craving in patients with poorly controlled Type 2 diabetes mellitus. Diabet Med 2013; 30:1080-6. [PMID: 23586900 DOI: 10.1111/dme.12209] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/10/2013] [Indexed: 11/27/2022]
Abstract
AIMS Although hyperphagia is a common manifestation of diabetes mellitus, data on food craving in patients with diabetes are limited. This study compared food craving in patients with Type 2 diabetes mellitus and a control group without diabetes. METHODS A total of 210 subjects (105 with Type 2 diabetes and 105 age-, sex- and BMI-matched control subjects) participated in two food craving surveys. The surveys were as follows: the General Food Cravings Questionnaire--Trait, which assesses the general trait of food craving; and the Food Cravings Questionnaire--State, which assesses the state of food craving or current desire for high-carbohydrate or high-fat foods in response to pictures of food. Follow-up Food Cravings Questionnaire--State surveys were administered approximately 3 months later to the subjects with diabetes. Survey results were analysed to assess relationships between food craving and glycaemic control. RESULTS The General Food Cravings Questionnaire--Trait scores in the group with Type 2 diabetes and the control group were not significantly different. The group with Type 2 diabetes had higher carbohydrate craving scores, but lower fat craving scores, than the control group. Carbohydrate craving scores in subjects with diabetes were positively correlated with HbA(1c). In follow-up surveys, carbohydrate craving scores declined in patients with improved glycaemic control. CONCLUSIONS The surveys showed that patients with Type 2 diabetes had higher carbohydrate cravings and lower fat cravings than the age-, sex- and BMI-matched control group. Carbohydrate craving in patients with diabetes was associated with poor glycaemic control.
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Affiliation(s)
- J H Yu
- Division of Endocrinology and Metabolism, Department of Internal Medicine, University of Ulsan College of Medicine, Seoul, Korea
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Seok H, Jung CH, Kim SW, Lee MJ, Lee WJ, Kim JH, Lee BW. Clinical characteristics and insulin independence of Koreans with new-onset type 2 diabetes presenting with diabetic ketoacidosis. Diabetes Metab Res Rev 2013; 29:507-13. [PMID: 23653323 DOI: 10.1002/dmrr.2421] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2012] [Revised: 12/29/2012] [Accepted: 04/07/2013] [Indexed: 11/10/2022]
Abstract
BACKGROUND We evaluated the incidence, characteristics and insulin independence of Koreans with new-onset type 2 diabetes (T2D) initially presenting with diabetic ketoacidosis (DKA). METHODS We analysed clinical and biochemical data from diabetic patients presenting with DKA. They were classified into ketosis-prone diabetes (KPD) type 1A (KPD-T1A) (A+β-), type 1B (KPD-T1B) (A-β-), type 2A (KPD-T2A) (A+β+) or type 2B (KPD-T2B) (A-β+) according to the presence or absence of an autoantibody and β-cell reserve. Changes in therapy after insulin discontinuation were evaluated for up to 4 years. We also compared clinical and biochemical characteristics between newly diagnosed T2D patients presenting with DKA and previously diagnosed T2D patients presenting with DKA. RESULTS Among 60 newly diagnosed KPD patients, 18, 21 and 21 patients were classified as KPD-T1A, KPD-T1B and KPD-T2B, respectively. In the KPD-T2B group, both fasting and stimulated C-peptide were recovered over 6 months. After 4 years of DKA development, 75% of KPD-T2B subjects no longer required insulin. Compared with previously diagnosed T2D patients presenting with DKA, newly diagnosed KPD-T2B patients tended to be younger, more obese and showed better insulin secretory function after recovery from DKA. CONCLUSIONS New-onset T2D patients presenting with DKA was not uncommon among the Korean population. In contrast to previously diagnosed T2D patients presenting with DKA, who showed a progressive decrease in insulin secretory function, new-onset KPD-T2B patients recovered insulin secretory function over time, and insulin independence could be expected.
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Affiliation(s)
- H Seok
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
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Kim JH, Ham BK, Shim SR, Lee WJ, Kim HJ, Kwon SS, Bae JH. The association between the self-perception period of overactive bladder symptoms and overactive bladder symptom scores in a non-treated population and related sociodemographic and lifestyle factors. Int J Clin Pract 2013; 67:795-800. [PMID: 23869680 DOI: 10.1111/ijcp.12080] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
AIMS To investigate the association between the self-perception period of OAB symptoms (SP-OAB) and the overactive bladder symptom score (OABSS), along with related sociodemographic and lifestyle factors. METHODS This was a cross-sectional study comprised of 192 men aged 40 years and older who participated in a prostate examination survey between February and May 2009 and proved to have OAB. Survey questionnaires included items on the OABSS and the SP-OAB assessed by the OABSS. Various sociodemographic and lifestyle factors were also included. RESULTS The average SP-OAB period was 24.72 ± 45.75 months and became significantly longer as the severity of OAB increased in correlation analysis (coefficient = 0.501, p < 0.001). Age, education, income, regular check-up, health maintenance and occupation were all risk factors in both OABSS and SP-OAB in univariate analysis. Body mass index (BMI), family size and SP-OAB were risk factors for OABSS in univariate analysis. Age and regular check-ups were factors in both OABSS and SP-OAB in multivariate analysis. BMI, income and SP-OAB were risk factors for OABSS. CONCLUSION These findings suggest that the SP-OAB is an independent risk factor for OAB progression and that various sociodemographic and lifestyle factors affect OABSS. The self-perception period should be considered in the treatment and prevention of OAB symptoms.
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Affiliation(s)
- J H Kim
- Department of Urology, Soonchunhyang University Hospital, Soonchunhyang University College of Medicine, Seoul, Korea
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Cho YD, Lee WJ, Kim KM, Kang HS, Kim JE, Han MH. Stent-assisted coil embolization of posterior communicating artery aneurysms. AJNR Am J Neuroradiol 2013; 34:2171-6. [PMID: 23660292 DOI: 10.3174/ajnr.a3541] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
BACKGROUND AND PURPOSE Use of protective stents may not be effective in coil embolization of wide-neck aneurysms involving the posterior communicating artery. Successful implementation depends on the caliber of the vessel, its angle of origin, and the manner in which its orifice is incorporated into the aneurysm. Presented here are the results (clinical and radiographic) of coil embolization in aneurysms of the ICA-posterior communicating artery junction, variably aided by stents. The primary focus is angiographic configurations that impact stent placement. MATERIALS AND METHODS From a prospective data repository, we retrieved records of 32 consecutive patients with 33 posterior communicating artery aneurysms, all of which were treated by stent-assisted coil embolization between June 2008 and August 2012. Outcomes were analyzed in terms of aneurysm configuration and clinical status. RESULTS Stents were positioned entirely in the ICA (n = 26), from the ICA to the posterior communicating artery (n = 2), in the posterior communicating artery only (n = 3), and retrograde from the posterior communicating artery to the ICA terminus (n = 2). Procedure-related complications occurred in 3 patients (9.1%), but only 1 (3.0%) had mild neurologic sequelae (Glasgow Outcome Score 4). Using coil embolization, we achieved successful occlusion in 24 aneurysms (72.7%), and in 9 others, subtotal occlusion was conferred. During a mean follow-up of 15.7 ± 10.7 months, imaging of 27 aneurysms documented stable occlusion in 19 (70.4%), whereas angiography of 15 aneurysms (39.5%) disclosed 2 instances of in-stent stenosis (13.3%) and a solitary occurrence of stent migration (6.7%). CONCLUSIONS In posterior communicating artery aneurysms, stent protection during coil embolization is feasible by adjusting the procedural strategy to accommodate differing configurations of the aneurysm and its vascular source.
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Kim YS, Nam HJ, Chung HY, Kim ND, Ryu JH, Lee WJ, Arking R, Yoo MA. Role of xanthine dehydrogenase and aging on the innate immune response of Drosophila. J Am Aging Assoc 2013; 24:187-93. [PMID: 23604884 DOI: 10.1007/s11357-001-0020-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
It has been proposed that uric acid is an important scavenger of deleterious oxygen species and peroxynitrite in biological systems. The cellular sources responsible for the generation of damage-causing reactive oxygen species (ROS) are widespread. Xanthine dehydrogenase (XDH) / oxidase (XOD) catalyzes the oxidation of xanthine to uric acid. The rosy (ry) gene encodes XDH/XOD in Drosophila melanogaster. XDH codes for uric acid which is a ROS scavenger. XOD however is an enzyme system implicated in ROS production. In this study, we investigated the roles of XDH in the fly's immune defense response to infection and in the aging process. We first compared ROS generation and nitric oxide (NO) level in the whole body and the gut of XDH mutant with those of wild type. Our results suggested that XDH has a protective effect with respect to both ROS and NO generations, particularly in the gut. We also examined the effect of a XDH deletion mutant on the relative sensitivity of the organism against bacterial infection, on the immune inducibility of antimicrobial peptides and on the effect of aging in the defensive response to infection. Our results strongly suggest that XDH plays an important role in the innate immune response and that the age-associated deterioration of the innate immune response might be, at least in part, associated with the loss of XDH activity in the aging process.
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Affiliation(s)
- Y S Kim
- Department of Molecular Biology, Pusan National University, Gumjung-ku, Pusan, 609-735 ; Institute of Genetic Engineering, Pusan National University, Gumjung-ku, Pusan, 609-735
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Jung CH, Lee WJ, Hwang JY, Yu JH, Shin MS, Lee MJ, Jang JE, Leem J, Park JY, Kim HK. Assessment of the fatty liver index as an indicator of hepatic steatosis for predicting incident diabetes independently of insulin resistance in a Korean population. Diabet Med 2013; 30:428-35. [PMID: 23278318 DOI: 10.1111/dme.12104] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2012] [Revised: 10/24/2012] [Accepted: 12/18/2012] [Indexed: 02/06/2023]
Abstract
AIMS Fatty liver disease, especially non-alcoholic fatty liver disease, is considered to be the hepatic manifestation of the metabolic syndrome, both closely associated with insulin resistance. Furthermore, fatty liver disease assessed by ultrasonography is known to be a predictor of the development of Type 2 diabetes mellitus. However, it remains unclear whether fatty liver disease plays a role in the pathogenesis of Type 2 diabetes independently of insulin resistance. In this study, we investigated whether fatty liver disease assessed by the fatty liver index can predict the development of Type 2 diabetes independently of systemic insulin resistance. METHODS We examined the clinical and laboratory data of 7860 subjects without diabetes who underwent general routine health evaluations at the Asan Medical Center in 2007 and had returned for follow-up examinations in 2011. Fatty liver index was calculated using an equation that considers serum triglyceride levels, γ-glutamyltransferase, waist circumference and BMI. RESULTS During a 4-year period, 457 incident diabetes cases (5.8%) were identified. The odds ratios for the development of Type 2 diabetes were significantly higher in the group with a fatty liver index ≥ 60 (fatty liver index-positive) than in the group with a fatty liver index < 20 (fatty liver index-negative) after adjusting for various confounding variables including homeostasis model assessment of insulin resistance. Odds ratios were significant regardless of the insulin resistance status at baseline. CONCLUSIONS Our results suggest that fatty liver index as a simple surrogate indicator of hepatic steatosis is valuable in identifying subjects at high risk for Type 2 diabetes. In addition, fatty liver disease itself contributes to the development of Type 2 diabetes independently of systemic insulin resistance.
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Affiliation(s)
- C H Jung
- Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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Ma JW, Lee WJ, Bae JM, Jeong KS, Kang YS, Cho MH, Seo JH, Ahn JP, Chung KB, Song JY. Effects of surface chemical structure on the mechanical properties of Si(1-x)Ge(x) nanowires. Nano Lett 2013; 13:1118-1125. [PMID: 23421739 DOI: 10.1021/nl304485d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The Young's modulus and fracture strength of Si(1-x)Ge(x) nanowires (NWs) as a function of Ge concentration were measured from tensile stress measurements. The Young's modulus of the NWs decreased linearly with increasing Ge content. No evidence was found for a linear relationship between the fracture strength of the NWs and Ge content, which is closely related to the quantity of interstitial Ge atoms contained in the wire. However, by removing some of the interstitial Ge atoms through rapid thermal annealing, a linear relationship could be produced. The discrepancy in the reported strength of Si and Ge NWs between calculated and experimented results could be related to SiO(2-x)/Si interfacial defects that are found in Si(1-x)Ge(x) NWs. It was also possible to significantly decrease the number of interfacial defects in the NWs by incorporating a surface passivated Al2O3 layer, which resulted in a substantial increase in fracture strength.
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Affiliation(s)
- J W Ma
- Institute of Physics and Applied Physics, Yonsei University, Seoul 120-749, Korea
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