151
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Kim HJ, Kim MB, Chang SW. Ventral Surface Midline Cavernous Hemangioma of Anterior Tongue in a Child. Ear Nose Throat J 2022:1455613221080971. [PMID: 35229688 DOI: 10.1177/01455613221080971] [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: 11/17/2022] Open
Affiliation(s)
- Hyun Jung Kim
- Department of Otorhinolaryngology, 91577Jeju National University School of Medicine, Jeju, Republic of Korea
| | - Min Bum Kim
- Department of Otorhinolaryngology, 91577Jeju National University School of Medicine, Jeju, Republic of Korea
| | - Suk Won Chang
- Department of Otorhinolaryngology, 91577Jeju National University School of Medicine, Jeju, Republic of Korea
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152
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Jiang Y, Peng Y, Shin HH, Kim HJ, Kim KH, Jiang L, Lee J, Li Z. Gymnodinialimonas ceratoperidinii gen. nov., sp. nov., isolated from rare marine dinoflagellate Ceratoperidinium margalefii. Arch Microbiol 2022; 204:185. [PMID: 35182244 DOI: 10.1007/s00203-022-02797-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [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: 11/30/2021] [Revised: 02/04/2022] [Accepted: 02/07/2022] [Indexed: 11/29/2022]
Abstract
A bacterial strain, designated J12C1-MA-4T, was isolated from liquid culture of the dinoflagellate Ceratoperidinium margalefii. The bacterium was Gram-negative, aerobic, and rod-shaped. Oxidase and catalase were positive. Optimal growth was observed at 30 °C, pH 7.0, in the presence of 1% (w/v) NaCl. Phylogenetic analyses based on 16S rRNA gene and a 92 core gene set suggested that the strain J12C1-MA-4T belongs to the family Rhodobacteraceae in the class Alphaproteobacteria and represents a taxon separated from other genera. 16S rRNA gene sequence of the strain J12C1-MA-4T showed high similarities to Loktanella ponticola KCTC 42133T (95.7%), Pseudooctadecabacter jejudonensis KCTC 32525T (95.5%) and Jannaschia helgolandensis KCTC 12191T (95.3%). The genome length of strain J12C1-MA-4T was 3,621,968 bp with a DNA G + C content of 64.48 mol%. The major cellular fatty acids of strain J12C1-MA-4T were summed feature 8 (comprising C18:1ω7c and/or C18:1ω6c) (> 10%). Phosphatidylglycerol (PG), phosphatidylcholine (PC), phospholipids (PL), lipids 1 (L1) and aminolipid (AL) were shown to be the major polar lipids. The sole predominant isoprenoid quinone was Q-10. Based on phylogenetic, phenotypic, chemotaxonomic and genomic features, we propose that strain J12C1-MA-4T represent a novel species in the novel genus of the family Rhodobacteraceae, with the proposed name Gymnodinialimonas ceratoperidinii gen. nov., sp. nov.. The type strain is J12C1-MA-4T (=KCTC 82770T =GDMCC 1.2729T).
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Affiliation(s)
- Yue Jiang
- Biological Resource Center/Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea.,Department of Integrative Food, Bioscience and Biotechnology, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Yuxin Peng
- Biological Resource Center/Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Hyeon Ho Shin
- Library of Marine Samples, Korea Institute of Ocean Science and Technology, Geoje, 53201, Republic of Korea
| | - Hyun Jung Kim
- Library of Marine Samples, Korea Institute of Ocean Science and Technology, Geoje, 53201, Republic of Korea
| | - Ki-Hyun Kim
- Biological Resource Center/Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Lingmin Jiang
- Biological Resource Center/Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Jiyoung Lee
- Biological Resource Center/Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea
| | - Zhun Li
- Biological Resource Center/Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeongeup, 56212, Republic of Korea.
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153
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Saposnik G, Andhavarapu S, Fernández Ó, Kim HJ, Wiendl H, Foss M, Zuo F, Havrdová EK, Celius E, Caceres F, Magyari M, Bermel R, Costa A, Terzaghi M, Kalincik T, Popescu V, Amato MP, Montalban X, Oh J. Factors associated with treatment escalation among MS specialists and general neurologists: Results from an International cojoint study. Mult Scler Relat Disord 2022; 58:103404. [PMID: 35216786 DOI: 10.1016/j.msard.2021.103404] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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: 09/05/2021] [Revised: 10/19/2021] [Accepted: 11/13/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Previous studies in multiple sclerosis (MS) showed that therapeutic inertia (TI) affects 60-90% of neurologists and up to 25% of daily treatment decisions. The objective of this study was to determine the most common factors and attribute levels associated with decisions to treatment escalation in an international study in MS care. METHODS 300 neurologists with MS expertise from 20 countries were invited to participate. Participants were presented with 12 pairs of simulated MS patient profiles described by 13 clinically relevant factors. We used disaggregated discrete choice experiments to estimate the weight of factors and attributes affecting physicians' decisions when considering treatment selection. Participants were asked to select the ideal candidate for treatment escalation from modest to higher-efficacy therapies. RESULTS Overall, 229 neurologists completed the study (completion rate: 76.3%). The top 3 weighted factors associated with treatment escalation were: previous relapses (20%), baseline expanded disability status scale [EDSS] (18%), and MRI activity (13%). Patient demographics and desire for pregnancy had a modest influence (≤ 3%). We observed differences in the weight of factors associated with treatment escalation between MS specialists and non-MS specialists. CONCLUSIONS Our results provide critical information on factors influencing neurologists' treatment decisions and should be applied to continuing medical education strategies.
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Affiliation(s)
- G Saposnik
- Division of Neurology, Department of Medicine, St. Michael's Hospital, University of Toronto, 55 Queen St E, Toronto, Ontario M5C 1R6, Canada; Director and Founder, NeuroEconSolutions© (www.neuroeconsolutions.com), Toronto, Canada; Clinical Outcomes and Decision Neuroscience Unit, St Michael's Hospital, University of Toronto, Toronto, Canada; Li Ka Shing Knowledge Institute, St. Michael's Hospital, University of Toronto, Canada.
| | - S Andhavarapu
- Clinical Outcomes and Decision Neuroscience Unit, St Michael's Hospital, University of Toronto, Toronto, Canada
| | - Ó Fernández
- Department of Pharmacology, Faculty of Medicine, University of Malaga, Institute of Biomedical Research of Malaga, Regional University Hospital of Malaga, Spain
| | - H J Kim
- Department of Neurology, Research Institute and Hospital of National Cancer Center, Goyang, Republic of Korea
| | - H Wiendl
- Department of Neurology, Institute of Translational Neurology, University of Münster, Germany
| | - M Foss
- Bootstrap Analytics, Calgary, Canada
| | - F Zuo
- Li Ka Shing Knowledge Institute, St. Michael's Hospital, University of Toronto, Canada
| | - E K Havrdová
- Department of Neurology, First Medical Faculty, Center for Clinical Neuroscience, Charles University, Prague, Czech Republic
| | - E Celius
- Department of Neurology, Oslo University Hospital, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - F Caceres
- Institute of Restorative Neurosciences, Buenos Aires, Argentina
| | - M Magyari
- Danish Multiple Sclerosis Center, University Hospital Rigshospitalet, Copenhagen, Denmark
| | - R Bermel
- Mellen Center for Multiple Sclerosis, Cleveland Clinic, Cleveland, OH, United States
| | - A Costa
- Neurology Department, Faculty of Medicine University of Porto, Centro Hospitalar Universitário São João, Portugal
| | - M Terzaghi
- Clinical Outcomes and Decision Neuroscience Unit, St Michael's Hospital, University of Toronto, Toronto, Canada; Li Ka Shing Knowledge Institute, St. Michael's Hospital, University of Toronto, Canada
| | - T Kalincik
- Department of Medicine, MS Centre, Royal Melbourne Hospital Core Unit, University of Melbourne, Melborne, Australia
| | - V Popescu
- University MS Centre, Noorderhart Hospital, Pelt, Belgium; Hasselt University, Hasselt, Belgium
| | - M P Amato
- Department of Neurofarba, IRCCS Fondazione Don Carlo Gnocchi, University of Florence, Florence, Italy
| | - X Montalban
- Department of Neurology, Hospital Vall d´Hebron, Centre d'Esclerosi Mútiple de Catalunya, Universitat Autonoma de Barcelona, Spain
| | - J Oh
- Division of Neurology, Department of Medicine, St. Michael's Hospital, University of Toronto, 55 Queen St E, Toronto, Ontario M5C 1R6, Canada; Li Ka Shing Knowledge Institute, St. Michael's Hospital, University of Toronto, Canada
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154
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Youn J, Hong H, Shin W, Kim D, Kim HJ, Kim DS. Thin and stretchable extracellular matrix (ECM) membrane reinforced by nanofiber scaffolds for developing in vitro barrier models. Biofabrication 2022; 14. [DOI: 10.1088/1758-5090/ac4dd7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 01/21/2022] [Indexed: 11/11/2022]
Abstract
Abstract
An extracellular matrix (ECM) membrane made up of ECM hydrogels has great potentials to develop a physiologically relevant organ-on-a-chip because of its biochemical and biophysical similarity to in vivo basement membranes (BMs). However, the limited mechanical stability of the ECM hydrogels makes it difficult to utilize the ECM membrane in long-term and dynamic cell/tissue cultures. This study proposes an ultra-thin but robust and transparent ECM membrane reinforced with silk fibroin (SF)/polycaprolactone (PCL) nanofibers, which is achieved by in situ self-assembly throughout a freestanding SF/PCL nanofiber scaffold. The SF/PCL nanofiber-reinforced ECM (NaRE) membrane shows biophysical characteristics reminiscent of native BMs, including small thickness (< 5 μm), high permeability (< 9 × 10−5 cm s-1), and nanofibrillar architecture (~10 to 100 nm). With the BM-like characteristics, the nanofiber reinforcement ensured that the NaRE membrane stably supported the construction of various types of in vitro barrier models, from epithelial or endothelial barrier models to complex co-culture models, even over two weeks of cell culture periods. Furthermore, the stretchability of the NaRE membrane allowed emulating the native organ-like cyclic stretching motions (10 to 15%) and was demonstrated to manipulate the cell and tissue-level functions of the in vitro barrier model.
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155
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Kim DS, Kim HJ, Ahn HS. Association Between Statins and the Risk of Kidney Cancer Incidence and Mortality Using the Korean National Health Insurance Claims Database. Cancer Control 2022; 29:10732748221111293. [PMID: 35980770 PMCID: PMC9393673 DOI: 10.1177/10732748221111293] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Conflicting results have been reported regarding the potential preventive effects of statins on the risk of cancer. This study investigated the associations of statin use with the incidence and mortality of kidney cancer in South Korea. METHODS In this retrospective population-based cohort study using the National Health Insurance claims database, we compared patients aged 45-70 years who had used statins for at least 6 months to non-statin users matched by age and sex from 2005 to June 2013. The main outcomes were kidney cancer incidence and mortality according to statin use. Cox proportional hazard regression was used to calculate the adjusted hazard ratios (aHRs) and 95% confidence intervals (95% CIs). RESULTS In the cohort of 1 008 101 people, the aHRs for the association between statin use and the outcomes were .84 (95% CI: 0.71-.99) for kidney cancer incidence and .65 (95% CI: 0.41-.98) for kidney cancer mortality. In the matched cohort of 337 578, the risk per 1000 people of cancer incidence and mortality was 1.63, 1.07, and .24, .17 in statin users and non-users, respectively. In matched cohort, the risk of kidney cancer incidence and mortality decreased, but it is not statistically significant. Also, there was no linear relationship with increased doses. CONCLUSION Statin use might be associated with a decreased risk of kidney cancer incidence and mortality, but it showed no statistical significance. This study was a large-scale analysis, however, further studies that are larger and multinational in scope are needed to confirm the beneficial effects of statins on survival.
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Affiliation(s)
- Dong-Sook Kim
- 65558Health Insurance Review and Assessment Service, Wonju, South Korea
| | - Hyun Jung Kim
- Department of Preventive Medicine, College of Medicine, 34973Korea University, Seoul, South Korea
| | - Hyeong Sik Ahn
- Department of Preventive Medicine, College of Medicine, 34973Korea University, Seoul, South Korea
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156
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Kim HJ, Park SK. Negative pressure pulmonary edema after endotracheal tube extubation during recovery of general anesthesia in a pediatric patient with cerebral palsy. Allergy Asthma Respir Dis 2022. [DOI: 10.4168/aard.2022.10.4.229] [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: 11/07/2022]
Affiliation(s)
- Hyun Jung Kim
- Department of Anesthesiology and Pain Medicine, Jeju National College of Medicine, Jeju, Korea
| | - Sun Kyung Park
- Department of Anesthesiology and Pain Medicine, Jeju National College of Medicine, Jeju, Korea
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157
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Han H, Park Y, Choi Y, Yong U, Kang B, Shin W, Min S, Kim HJ, Jang J. A Bioprinted Tubular Intestine Model Using a Colon-Specific Extracellular Matrix Bioink. Adv Healthc Mater 2022; 11:e2101768. [PMID: 34747158 DOI: 10.1002/adhm.202101768] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [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: 08/24/2021] [Revised: 10/16/2021] [Indexed: 12/11/2022]
Abstract
Tremendous advances have been made toward accurate recapitulation of the human intestinal system in vitro to understand its developmental process, and disease progression. However, current in vitro models are often confined to 2D or 2.5D microarchitectures, which is difficult to mimic the systemic level of complexity of the native tissue. To overcome this problem, physiologically relevant intestinal models are developed with a 3D hollow tubular structure using 3D bioprinting strategy. A tissue-specific biomaterial, colon-derived decellularized extracellular matrix (Colon dECM) is developed and it provides significant maturation-guiding potential to human intestinal cells. To fabricate a perfusable tubular model, a simultaneous printing process of multiple materials through concentrically assembled nozzles is developed and a light-activated Colon dECM bioink is employed by supplementing with ruthenium/sodium persulfate as a photoinitiator. The bioprinted intestinal tissue models show spontaneous 3D morphogenesis of the human intestinal epithelium without any external stimuli. In consequence, the printed cells form multicellular aggregates and cysts and then differentiate into several types of enterocytes, building junctional networks. This system can serve as a platform to evaluate the effects of potential drug-induced toxicity on the human intestinal tissue and create a coculture model with commensal microbes and immune cells for future therapeutics.
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Affiliation(s)
- Hohyeon Han
- School of Interdisciplinary Bioscience and Bioengineering Pohang University of Science and Technology (POSTECH) Pohang Kyungbuk 37673 Korea
| | - Yejin Park
- Department of Convergence IT Engineering POSTECH Pohang Kyungbuk 37673 Korea
| | - Yoo‐mi Choi
- Department of Convergence IT Engineering POSTECH Pohang Kyungbuk 37673 Korea
| | - Uijung Yong
- Department of Convergence IT Engineering POSTECH Pohang Kyungbuk 37673 Korea
| | - Byeongmin Kang
- Department of Convergence IT Engineering POSTECH Pohang Kyungbuk 37673 Korea
| | - Woojung Shin
- Department of Biomedical Engineering The University of Texas at Austin Austin TX 78712 USA
- Department of Oncology Dell Medical School The University of Texas at Austin Austin TX 78712 USA
| | - Soyoun Min
- Department of Biomedical Engineering The University of Texas at Austin Austin TX 78712 USA
- Department of Oncology Dell Medical School The University of Texas at Austin Austin TX 78712 USA
| | - Hyun Jung Kim
- Department of Biomedical Engineering The University of Texas at Austin Austin TX 78712 USA
- Department of Oncology Dell Medical School The University of Texas at Austin Austin TX 78712 USA
| | - Jinah Jang
- School of Interdisciplinary Bioscience and Bioengineering Pohang University of Science and Technology (POSTECH) Pohang Kyungbuk 37673 Korea
- Department of Convergence IT Engineering POSTECH Pohang Kyungbuk 37673 Korea
- Department of Mechanical Engineering POSTECH Pohang Kyungbuk 37673 Korea
- Institute of Convergence Science Yonsei University Seoul 03722 Korea
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158
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Choi YH, Park JH, Kang MS, Yoon Y, Ha SD, Kim HJ. Predictive modeling and probabilistic risk assessment of Clostridium perfringens in hamburgers and sandwiches. Food Sci Biotechnol 2021; 30:1733-1742. [PMID: 34925947 DOI: 10.1007/s10068-021-01000-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 09/09/2021] [Revised: 10/14/2021] [Accepted: 10/17/2021] [Indexed: 11/28/2022] Open
Abstract
This study aimed to develop a mathematical model for the survival of Clostridium perfringens in hamburgers and sandwiches and to evaluate their microbial risk. The primary model was developed in hamburgers using 4 strains of C. perfringens at 5, 10, 15, 25 and 37 °C, and the kinetic parameters of the primary model were fitted well with the Weibull model (R 2 ≥ 0.95). The secondary model was developed and validated in hamburgers and sandwiches using the Davey model, which was evaluated by B f , A f , and RMSE values within the acceptable range. A probabilistic risk model was developed and simulated using @Risk program to estimate the probability of infection (P inf ) of C. perfringens based on the data on prevalence (n = 100), time, temperature, and consumption of hamburgers and sandwiches (150.00 ± 20.96 g). Based on the simulation model, the mean C. perfringens exposure dose was 0.00976 CFU/g, and the estimated mean P inf was 1.78 × 10-13, which was very low in comparison with the current available data. The proposed model and the result can thus be useful to establish risk management options and microbial criteria for C. perfringens contamination in hamburgers and sandwiches. Supplementary Information The online version contains supplementary material available at 10.1007/s10068-021-01000-z.
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Affiliation(s)
- Yun Hui Choi
- Research Group of Consumer Safety, Korea Food Research Institute, Wanju, 55365 Republic of Korea
| | - Jin Hwa Park
- Research Group of Consumer Safety, Korea Food Research Institute, Wanju, 55365 Republic of Korea
| | - Mi Seon Kang
- Research Group of Consumer Safety, Korea Food Research Institute, Wanju, 55365 Republic of Korea.,Department of Food Biotechnology, University of Science and Technology, Daejeon, 34113 Republic of Korea
| | - Yohan Yoon
- Department of Food and Nutrition, Sookmyung Women's University, Seoul, 04310 Republic of Korea
| | - Sang-do Ha
- Department of Food Science and Technology, Chung-Ang University, Anseong, 456-756 Republic of Korea
| | - Hyun Jung Kim
- Research Group of Consumer Safety, Korea Food Research Institute, Wanju, 55365 Republic of Korea.,Department of Food Biotechnology, University of Science and Technology, Daejeon, 34113 Republic of Korea
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159
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Lee H, Shin W, Kim HJ, Kim J. Turn-On Fluorescence Sensing of Oxygen with Dendrimer-Encapsulated Platinum Nanoparticles as Tunable Oxidase Mimics for Spatially Resolved Measurement of Oxygen Gradient in a Human Gut-on-a-Chip. Anal Chem 2021; 93:16123-16132. [PMID: 34807579 DOI: 10.1021/acs.analchem.1c03891] [Citation(s) in RCA: 6] [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] [Indexed: 02/07/2023]
Abstract
Turn-on type fluorescence sensing of O2 is considered a promising approach to developing ways to measure O2 in microenvironments with spatially distributed O2 levels. As a class of nanomaterials with a high degree of control over composition and structure, dendrimer-encapsulated nanoparticles (DENs) are promising candidates to mimic biological enzymes. Here, we report a strategy to monitor spatially distributed O2 across a three-dimensional (3D) human intestinal epithelial layer in a gut-on-a-chip in a turn-on fluorescence sensing manner. The strategy is based on the oxidase-mimetic activity of Pt DENs for catalytic oxidation of nonfluorescent Amplex Red to highly fluorescent resorufin in the presence of O2. We synthesized Pt DENs using two different types of dendrimers (i.e., amine-terminated or hydroxyl-terminated generation 6 polyamidoamine (PAMAM) dendrimers) with six different Pt2+/dendrimer ratios (i.e., 55, 200, 220, 550, 880, and 1320). After clarifying the intrinsic oxidase-mimetic activity of Pt DENs, we determined tunable oxidase-mimetic activity of Pt DENs, especially with fine-tuning the ratios of the Pt precursor ions and dendrimers. Particularly, the optimal Pt DENs having a Pt2+/dendrimer ratio of 1320 exhibited an ∼117-fold increase in the oxidase-mimetic activity for catalyzing the aerobic oxidation of Amplex Red to resorufin compared to one having a Pt2+/dendrimer ratio of 200. This study exemplified a simple yet effective approach for spatially resolved imaging of O2 using metal nanoparticle-based oxidase mimics in microphysiological environments like a human gut-on-a-chip.
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Affiliation(s)
- Hyein Lee
- Department of Chemistry, Research Institute for Basic Sciences, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Woojung Shin
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Hyun Jung Kim
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Joohoon Kim
- Department of Chemistry, Research Institute for Basic Sciences, Kyung Hee University, Seoul 02447, Republic of Korea.,KHU-KIST Department of Converging Science and Technology, Kyung Hee University, Seoul 02447, Republic of Korea
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160
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Kim T, Park SH, Hwang I, Lee JH, Kim JH, Kim HW, Kim HJ. Robust response of pulmonary pleomorphic carcinoma to pembrolizumab and sequential radiotherapy: A case report. Respirol Case Rep 2021; 9:e0875. [PMID: 34795901 PMCID: PMC8580814 DOI: 10.1002/rcr2.875] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 10/18/2021] [Accepted: 10/21/2021] [Indexed: 11/24/2022] Open
Abstract
Pulmonary pleomorphic carcinoma (PPC) is a rare type of non-small cell lung cancer (NSCLC) with a more aggressive clinical course and a worse outcome than other types of NSCLC. Pembrolizumab, a monoclonal antibody targeting programmed cell death-1 (PD-1), has been approved as the first-line treatment for advanced NSCLC with robust PD-L1 expression in at least 50% of tumour cells, without epidermal growth factor receptor gene (EGFR) mutations or anaplastic lymphoma kinase gene (ALK) rearrangement. Here, we report the case of an 81-year-old man with multiple comorbidities who was diagnosed with PPC and showed a robust response to pembrolizumab followed by radiation therapy without adverse effects. In the absence of randomized clinical trials for PPCs, our case report demonstrates the potential application of pembrolizumab and radiation therapy for the treatment of PPCs.
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Affiliation(s)
- Tae‐Hun Kim
- Division of Pulmonary Disease and Critical Care Medicine, Department of Internal Medicine, Dongsan HospitalKeimyung University School of MedicineDaeguSouth Korea
| | - Sun Hyo Park
- Division of Pulmonary Disease and Critical Care Medicine, Department of Internal Medicine, Dongsan HospitalKeimyung University School of MedicineDaeguSouth Korea
| | - Ilseon Hwang
- Department of Pathology, Dongsan HospitalKeimyung University School of MedicineDaeguSouth Korea
| | - Jin Hee Lee
- Department of Radiology, Dongsan HospitalKeimyung University School of MedicineDaeguSouth Korea
| | - Jin Hee Kim
- Department of Radiation Oncology, Dongsan HospitalKeimyung University School of MedicineDaeguSouth Korea
| | - Hae Won Kim
- Department of Nuclear Medicine, Dongsan HospitalKeimyung University School of MedicineDaeguSouth Korea
| | - Hyun Jung Kim
- Division of Pulmonary Disease and Critical Care Medicine, Department of Internal Medicine, Dongsan HospitalKeimyung University School of MedicineDaeguSouth Korea
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161
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Kim S, Nam HS, Lee MW, Kim HJ, Kang WJ, Song JW, Han J, Kang DO, Oh WY, Yoo H, Kim JW. Comprehensive Assessment of High-Risk Plaques by Dual-Modal Imaging Catheter in Coronary Artery. JACC Basic Transl Sci 2021; 6:948-960. [PMID: 35024500 PMCID: PMC8733747 DOI: 10.1016/j.jacbts.2021.10.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 10/04/2021] [Accepted: 10/04/2021] [Indexed: 01/22/2023]
Abstract
Fluorescence lifetime imaging (FLIm) allows label-free biochemical visualization of atheromas; however, it remains unknown whether FLIm can characterize high-risk plaque features in coronary arteries in a beating heart. Also, implementation of a novel analytic methodology is required for multispectral FLIm because it yields massive biochemical readouts. This study first demonstrated a simultaneous structural and biochemical assessment of high-risk plaques in the beating swine coronary arteries using a fully integrated optical coherence tomography-FLIm and a 2.9-F low-profile dual-modal catheter. Biochemical components of atherosclerotic plaques, including lipids, macrophages, lipids+macrophages, and fibrotic tissues, had unique fluorescence lifetime signatures that were clearly distinguishable using multispectral FLIm. Machine learning framework was successfully integrated with multispectral FLIm and enabled an automated, quantitative imaging of multiple key components associated with plaque destabilization.
Coronary plaque destabilization involves alterations in microstructure and biochemical composition; however, no imaging approach allows such comprehensive characterization. Herein, the authors demonstrated a simultaneous microstructural and biochemical assessment of high-risk plaques in the coronary arteries in a beating heart using a fully integrated optical coherence tomography and fluorescence lifetime imaging (FLIm). It was found that plaque components such as lipids, macrophages, lipids+macrophages, and fibrotic tissues had unique fluorescence lifetime signatures that were distinguishable using multispectral FLIm. Because FLIm yielded massive biochemical readouts, the authors incorporated machine learning framework into FLIm, and ultimately, their approach enabled an automated, quantitative imaging of multiple key components relevant for plaque destabilization.
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Affiliation(s)
- Sunwon Kim
- Multimodal Imaging and Theranostic Lab, Cardiovascular Center, Korea University Guro Hospital, Seoul, South Korea
- Department of Cardiology, Korea University Ansan Hospital, Ansan-si, South Korea
| | - Hyeong Soo Nam
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
| | - Min Woo Lee
- Department of Biomedical Engineering, Hanyang University, Seoul, South Korea
| | - Hyun Jung Kim
- Multimodal Imaging and Theranostic Lab, Cardiovascular Center, Korea University Guro Hospital, Seoul, South Korea
| | - Woo Jae Kang
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
- KI for Health Science and Technology, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
| | - Joon Woo Song
- Multimodal Imaging and Theranostic Lab, Cardiovascular Center, Korea University Guro Hospital, Seoul, South Korea
| | - Jeongmoo Han
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
| | - Dong Oh Kang
- Multimodal Imaging and Theranostic Lab, Cardiovascular Center, Korea University Guro Hospital, Seoul, South Korea
| | - Wang-Yuhl Oh
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
- KI for Health Science and Technology, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
| | - Hongki Yoo
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
- Dr Hongki Yoo, Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, South Korea.
| | - Jin Won Kim
- Multimodal Imaging and Theranostic Lab, Cardiovascular Center, Korea University Guro Hospital, Seoul, South Korea
- Address for correspondence: Dr Jin Won Kim, Multimodal Imaging and Theranostic Lab, Cardiovascular Center, Korea University Guro Hospital, 148 Gurodong-ro, Guro-gu, Seoul 08308, South Korea.
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162
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Shin HH, Li Z, Kim HJ, Park BS, Lee J, Shin AY, Park TG, Lee KW, Han KH, Youn JY, Kwak KY, Seo MH, Kim D, Son MH, Kim DJ, Shin K, Lim WA. Alexandrium catenella (Group I) and A. pacificum (Group IV) cyst germination, distribution, and toxicity in Jinhae-Masan Bay, Korea. Harmful Algae 2021; 110:102122. [PMID: 34887002 DOI: 10.1016/j.hal.2021.102122] [Citation(s) in RCA: 7] [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] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Revised: 09/28/2021] [Accepted: 10/05/2021] [Indexed: 06/13/2023]
Abstract
To better understand the outbreaks of paralytic shellfish poisoning and bloom dynamics caused by Alexandrium species in Jinhae-Masan Bay, Korea, the germination and distributions of ellipsoidal Alexandrium cysts were investigated, and paralytic shellfish toxins (PSTs) profiles and contents were determined using strains established from germling cells. The phylogeny and morphological observations revealed that the germinated vegetative cells from ellipsoidal cysts collected from the surface sediments in Jinhae-Masan Bay belong to Alexandrium catenella (Group I) and A. pacificum (Group IV) nested within A. tamarense species complex. Cyst germinations of A. catenella (Group I) were observed at only 10 °C, whereas cysts of A. pacificum (Group IV) could germinate at temperature ranges of 10 to 25 °C. Maximum germination success (85%) for isolated cysts occurred at 15 °C, and the germling cells were A. pacificum (Group IV). The results indicate that the variation in water temperature in Jinhae-Masan Bay can control the seasonal variations in germination of cysts of A. catenella (Group I) and A. pacificum (Group IV). The germination rates of ellipsoidal Alexandrium cysts were different among sampling sites in Jinhae-Masan Bay, probably because of differences in distribution and abundance of A. catenella (Group I) and A. pacificum (Group IV) in the sediments. The ellipsoidal Alexandrium cyst concentrations were much higher in February than in August, however the distributions were similar. Gonyautoxins 3 and 4 (GTX-3 and GTX-4) contributed a large proportion (>90%) of the toxins produced by strains A. catenella (Group I) and A. pacificum (Group IV) established from germling cells, and the total cellular contents were higher in A. catenella (Group I) than in A. pacificum (Group IV).
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Affiliation(s)
- Hyeon Ho Shin
- Library of Marine Samples, Korea Institute of Ocean Science & Technology, Geoje 656-830, Republic of Korea.
| | - Zhun Li
- Biological Resource Center/Korean Collection for Type Cultures (KCTC), Korea Research Institute of Bioscience and Biotechnology, Jeonbuk 56212, Republic of Korea
| | - Hyun Jung Kim
- Library of Marine Samples, Korea Institute of Ocean Science & Technology, Geoje 656-830, Republic of Korea
| | - Bum Soo Park
- Marine Ecosystem Research Center, Korea Institute of Ocean Science & Technology, Busan 49111, Republic of Korea
| | - Jihoon Lee
- Marine Biotechnology Research Center, Korea Institute of Ocean Science & Technology, Busan 49111, Republic of Korea
| | - A-Young Shin
- Marine Biotechnology Research Center, Korea Institute of Ocean Science & Technology, Busan 49111, Republic of Korea
| | - Tae-Gyu Park
- National Institute of Fisheries Science, Tongyeong 53085, Korea
| | - Kyun-Woo Lee
- Marine Biotechnology Research Center, Korea Institute of Ocean Science & Technology, Busan 49111, Republic of Korea
| | - Kyung Ha Han
- Library of Marine Samples, Korea Institute of Ocean Science & Technology, Geoje 656-830, Republic of Korea; Pukyong National University, Yongso-ro, Busan 48513, Republic of Korea
| | - Joo Yeon Youn
- Library of Marine Samples, Korea Institute of Ocean Science & Technology, Geoje 656-830, Republic of Korea
| | - Kyung Yoon Kwak
- Library of Marine Samples, Korea Institute of Ocean Science & Technology, Geoje 656-830, Republic of Korea
| | - Min Ho Seo
- Marine Ecology Research Center, Yeosu 59697, Republic of Korea
| | - Daekyung Kim
- Biological Daegu Center, Korea Basic Science Institute (KBSI), Daegu, Republic of Korea
| | - Moon Ho Son
- National Institute of Fisheries Science, Busan, 619-705, Republic of Korea
| | - Dug-Jin Kim
- Marine observation team, Korea Institute of Ocean Science & Technology, Geoje 656-830, Republic of Korea
| | - Kyoungsoon Shin
- Ballast Water Research Center, Korea Institute of Ocean Science & Technology, Geoje 53201, Republic of Korea
| | - Weol-Ae Lim
- National Institute of Fisheries Science, Busan, 619-705, Republic of Korea
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163
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Kim HS, Kim HJ, Lee J, Lee T, Yun J, Lee G, Hong Y. Hand-Held Raman Spectrometer-Based Dual Detection of Creatinine and Cortisol in Human Sweat Using Silver Nanoflakes. Anal Chem 2021; 93:14996-15004. [PMID: 34736319 DOI: 10.1021/acs.analchem.1c02496] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The conventional tissue biopsy method yields isolated snapshots of a narrow region. Therefore, it cannot facilitate comprehensive disease characterization and monitoring. Recently, the detection of tumor-derived components in body fluids─a practice known as liquid biopsy─has attracted increased attention from the biochemical research and clinical application viewpoints. In this vein, surface-enhanced Raman scattering (SERS) has been identified as one of the most powerful liquid-biopsy analysis techniques, owing to its high sensitivity and specificity. Moreover, it affords high-capacity spectral multiplexing for simultaneous target detection and a unique ability to obtain intrinsic biomolecule-fingerprint spectra. This paper presents the fabrication of silver nanosnowflakes (SNSFs) using the polyol method and their subsequent dropping onto a hydrophobic filter paper. The SERS substrate, which comprises the SNSFs and hydrophobic filter paper, facilitates the simultaneous detection of creatinine and cortisol in human sweat using a hand-held Raman spectrometer. The proposed SERS system affords Raman spectrometry to be performed on small sample volumes (2 μL) to identify the normal and at-risk creatinine and cortisol groups.
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Affiliation(s)
- Hyun Soo Kim
- Department of Electronic Engineering, Kwangwoon University, Seoul 01897, Republic of Korea
| | - Hyun Jung Kim
- Department of Medical Device, Korea Institute of Machinery and Materials (KIMM), Daegu 42994, Republic of Korea.,Department of Biotechnology and Bioinformatics, Korea University, Sejong 30019, Republic of Korea
| | - Jaehun Lee
- Department of Medical Device, Korea Institute of Machinery and Materials (KIMM), Daegu 42994, Republic of Korea
| | - Taeha Lee
- Department of Biotechnology and Bioinformatics, Korea University, Sejong 30019, Republic of Korea.,Interdisciplinary Graduate Program for Artificial Intelligence Smart Convergence Technology, Korea University, Sejong 30019, Republic of Korea
| | - Jongsu Yun
- Department of Medical Device, Korea Institute of Machinery and Materials (KIMM), Daegu 42994, Republic of Korea
| | - Gyudo Lee
- Department of Biotechnology and Bioinformatics, Korea University, Sejong 30019, Republic of Korea.,Interdisciplinary Graduate Program for Artificial Intelligence Smart Convergence Technology, Korea University, Sejong 30019, Republic of Korea
| | - Yoochan Hong
- Department of Medical Device, Korea Institute of Machinery and Materials (KIMM), Daegu 42994, Republic of Korea
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164
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Kim DS, Ahn HS, Kim HJ. Statin use and incidence and mortality of breast and gynecology cancer: A cohort study using the National Health Insurance claims database. Int J Cancer 2021; 150:1156-1165. [PMID: 34751444 DOI: 10.1002/ijc.33869] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [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: 08/03/2021] [Revised: 10/03/2021] [Accepted: 10/15/2021] [Indexed: 11/06/2022]
Abstract
Previous studies have reported inconsistent findings concerning the impact of statin use on cancer prevention. This study examined the association between statin use and cancer incidence and mortality related to breast and gynecologic cancers in South Korea. A population-based cohort study was conducted using the National Health Insurance claims database. Women aged 45-70 years old who had taken statins for at least 6 months were compared to statin non-users of the same age from January 2005 to June 2013. The primary outcomes were cancer incidence and mortality related to breast cancer, total gynecologic cancers, cervix uteri cancer, and ovarian cancer. Cox proportional hazards regression was conducted to calculate the adjusted hazard ratios (aHRs) and 95% confidence intervals (95% CIs). Out of 587 705 women, there were 3591 cases of breast cancer, 2239 cases of gynecologic cancers, and 565 breast and total gynecologic cancer deaths during 7.6 person-years. The aHRs for the association between the risk of each cancer and statin use were 0.88 (95% CI 0.79-0.97) for breast cancer and 0.83 (95% CI 0.67-0.99) for cervix uteri cancer. Statin use was associated with decreased breast cancer mortality (HR = 0.65, 95% CI 0.43-0.99) and total gynecologic cancer mortality (HR = 0.70, 95% CI 0.50-0.98). A dose-response relationship was only found for all-cancer mortality. Statin use for at least 6 months was significantly associated with a lower risk of breast and cervix uteri cancer incidence, and with lower mortality of breast and gynecologic cancers. Further research on these associations will be needed. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Dong-Sook Kim
- Department of Research, Health Insurance Review & Assessment Service, Wonju, Republic of Korea
| | - Hyeong Sik Ahn
- Department of Preventive Medicine, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Hyun Jung Kim
- Department of Preventive Medicine, College of Medicine, Korea University, Seoul, Republic of Korea
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165
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Ahn HS, Kim HJ, Kang TU, Kazmi SZ, Suh JS, Young Choi J. Dyslipidemia Is Associated With Increased Risk of Achilles Tendon Disorders in Underweight Individuals to a Greater Extent Than Obese Individuals: A Nationwide, Population-Based, Longitudinal Cohort Study. Orthop J Sports Med 2021; 9:23259671211042599. [PMID: 34676271 PMCID: PMC8524716 DOI: 10.1177/23259671211042599] [Citation(s) in RCA: 4] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 06/29/2021] [Indexed: 11/15/2022] Open
Abstract
Background: The association between dyslipidemia and Achilles tendinopathy (AT) or
Achilles tendon rupture (ATR) remains controversial, although some studies
have examined this topic. Purpose: To evaluate the correlation of dyslipidemia and the risk of AT or ATR, and
its association with body mass index (BMI), by assessing data from a
nationwide population-based cohort. Study Design: Cohort study; Level of evidence, 3. Methods: We used the National Health Insurance database, which includes the entire
population of the Republic of Korea, to evaluate participants in the
National Health Screening Program between January 2009 and December 2010.
Participants diagnosed with AT or ATR before December 31, 2017, were
selected. The variables assessed were age, sex, frequency of high-intensity
exercise per week, BMI, waist circumference, systolic blood pressure, and
levels of low-density lipoprotein cholesterol (LDL-C), triglycerides (TG),
high-density lipoprotein cholesterol (HDL-C), and fasting blood glucose.
Multivariate Cox proportional hazards regression was used for data
analysis. Results: A total of 16,830,532 participants were included. Of these, 125,814 and
31,424 participants developed AT and ATR, respectively. A higher level of
LDL-C was associated with an increased risk of AT (adjusted hazard ratio
[HR], 1.16) and ATR (adjusted HR, 1.18). A slightly increased risk of AT was
observed in participants with higher TG levels (adjusted HR, 1.03), whereas
higher HDL-C level was associated with a slight risk reduction for AT
(adjusted HR, 0.95). However, no significant association was observed
between higher TG or HDL-C levels and ATR. In the underweight group (BMI
<18.5 kg/m2), a higher LDL-C level was associated with an
increased risk of AT and ATR by 37% and 116%, respectively, compared with
lower LDL-C. Higher LDL-C level was associated with an increased risk of AT
and ATR by 10% and 16%, respectively, in the obese group (BMI ≥25
kg/m2). Conclusion: Dyslipidemia was related to the development of AT and ATR. The association of
higher LDL-C levels with AT and ATR risk was more pronounced in underweight
than in overweight and obese individuals.
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Affiliation(s)
- Hyeong Sik Ahn
- Department of Preventive Medicine, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Hyun Jung Kim
- Department of Preventive Medicine, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Tae Uk Kang
- Health Insurance Policy Research Institute, National Health Insurance Service, Wonju-si, Gangwon-do, Republic of Korea
| | - Sayada Z Kazmi
- Department of Preventive Medicine, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Jin Soo Suh
- Department of Orthopaedic Surgery, Inje University Ilsan Paik Hospital, Goyang-si, Gyeonggi-do, Republic of Korea
| | - Jun Young Choi
- Department of Orthopaedic Surgery, Inje University Ilsan Paik Hospital, Goyang-si, Gyeonggi-do, Republic of Korea
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Sung J, Lee Y, Cho Y, Shin M, Lee S, Lee H, Koh H, Bae J, Shin J, Kim HJ, Lee D. Cover Image, Volume 118, Number 11, November 2021. Biotechnol Bioeng 2021. [DOI: 10.1002/bit.27960] [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: 11/06/2022]
Affiliation(s)
- Jae‐Yoon Sung
- Department of Biotechnology Yonsei University Seoul South Korea
| | - Yong‐Jik Lee
- Department of Bio‐Cosmetics Seowon University Chung‐Ju South Korea
| | - Yong‐Joon Cho
- Department of Biological Sciences and Research Institute of Basic Sciences Seoul National University Seoul South Korea
| | - Myeong‐Na Shin
- Department of Central Area Crop Science NICS, RDA Suwon South Korea
| | - Sang‐Jae Lee
- Major in Food Biotechnology Silla University Busan South Korea
| | - Han‐Seung Lee
- Major in Food Biotechnology Silla University Busan South Korea
| | - Hong Koh
- Department of Pediatrics Yonsei University Seoul South Korea
| | - Jin‐Woo Bae
- Department of Biology Kyung Hee University Seoul South Korea
| | - Jae‐Ho Shin
- Department of Applied Biosciences Kyungpook National University Daegu South Korea
| | - Hyun Jung Kim
- Department of Biomedical Engineering The University of Texas at Austin Austin Texas USA
| | - Dong‐Woo Lee
- Department of Biotechnology Yonsei University Seoul South Korea
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167
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Lee Y, Shin J, Park JK, Shin JH, Kim HJ, Park HC, Heo R. Associations between changing patterns of ST-T waves morphologies in rest electrocardiography and cardiovascular risk in an asymptomatic low risk population: a report from Ansan-Ansung cohort study. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2522] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
While clinical significance of ST-T wave abnormalities (STA) in rest electrocardiography (ECG) on long-term cardiovascular outcomes has been on debate, few studies have been reported on the association between the changes in ST-T waves in rest ECG and cardiovascular outcomes in low risk populations. We investigate the changing patterns of STA in rest ECG and the predictive value of the changes in ST-T wave in rest ECG for cardiovascular events in an asymptomatic general population.
Methods
A longitudinal community-based cohort study was conducted for 12 years. Koreans aged 40–69 years were followed biennially through scheduled revisit for comprehensive assessments. Among 10,030 participants, 6,648 participants who did not have any cardiovascular diseases, angina-related symptoms or pathologic Q waves in rest ECG at baseline were included for analysis. Changes in STAs were defined using the changes between ECG at baseline and that at the first revisit. A major adverse cardiovascular events was defined as a composite of cardiac death, myocardial infarction, clinical diagnosis of coronary artery disease and stroke.
Results
Among 5,924 participants without STA at baseline, only 187 participants (3.2%) developed new STA. Among 724 patients (10.9%) with STA at baseline, 274 patients (37.8%) persistently showed STA at the first revisit. MACEs occurred more frequently in the participants persistently with STA and those with newly-developed STA than in the participants persistently without STA (Figure 1). Multivariate Cox-proportional hazard models showed that a higher risk of MACE was only associated with the persisted STA (HR 1.69; 95% CI 1.10–2.63). In participants with baseline STA, persisted T-wave flattening was associated with a higher risk of MACE, whereas T-wave inversion, either persisted or fluctuated was not associated with a higher risk of MACE, compared with persistent absence of STA (Figure 2). In the participants without baseline STAs, multivariate Cox-proportional hazard model showed that newly-developed T-wave flattening (HR 1.85; 95% CI 0.20–2.84), not T-wave inversion (HR 1.50; 95% CI 0.85–2.65) was associated with a higher risk of MACE. Survival receiver operating curve analysis showed that the changes in STAs had a C-index of 0.538 (95% CI 0.511–0.558), a sensitivity of 13.0% and a specificity of 92.5% and add only a small value to the predictive power of 10-year atherosclerotic cardiovascular diseases risk estimator (C-index without STA changes 0.708 [0.681–0.736] vs. C-index with STA changes 0.721 [0.694–0.748]).
Conclusions
STAs uncommonly developed while frequently disappeared spontaneously in the asymptomatic general population. Persisted STA and newly developed STA in rest ECG were predictive of future cardiovascular events in the asymptomatic general population. However, the changes in STAs did not significantly improve the predictive value of the conventional risk estimator, when added.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): National Research Foundation of Korea Figure 1Figure 2
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Affiliation(s)
- Y Lee
- Hanyang University Guri Hospital, Seoul, Korea (Republic of)
| | - J Shin
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - J K Park
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - J H Shin
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - H J Kim
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - H C Park
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - R Heo
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
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168
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Lee Y, Shin J, Shin JH, Kim HJ, Ryu MH, Park HC, Lim HY, Park JK, Heo R, Kim WH. Simulation and validation for count-based binary decision of target blood pressure achievement in home blood pressure monitoring data analysis for clinical practice. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2351] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
Home blood pressure monitoring (HBPM) is a useful tool to identify hypertension and to decide whether a patient's blood pressure (BP) is controlled. The use of automatized oscillometric BP measurement devices has become increasingly popular with help of information technology and internet of things to the devices. However, applying HBPM to daily clinical practices is still challenging, because most patients with hypertension are in age groups not familiar to digital devices and internet and high BP criteria using average home BP values are often useless in outpatient clinics without easily accessible average BP calculation tools. Therefore, we developed a simple and straightforward method to interpret HBPM through counts of BP ≥135/85 mmHg.
Methods
We simulated 400 cases of HBPM using a random number generator function in statistical software. The simulated average home systolic BP (SBP) and its standard deviation (SD) were 125±15 mmHg and 12±5 mmHg and the number of HBP readings was 24 times. The simulated diastolic BP (DBP) was randomly selected to 50–75% of the SBP. The validation of the binary interpretation method was conducted using actual HBPM data from 386 subjects in a rural area of South Korea. Receiver operating characteristics curve analysis was conducted, and linear regression and logarithmic models were fitted between the numbers of home BP ≥135/85 mmHg and mean BP. Hypertension was defined with average home BP ≥135/85 mmHg.
Results
In the simulated cohort, hypertension was presented in 197 cases (49.3%). The C-index of the numbers of BP readings ≥135/85 mmHg was 0.994 (95% confidence interval [CI] 0.990–0.998), and ≥12 of 24 BP readings ≥135/85 mmHg showed a sensitivity of 95.4%, a specificity of 95.1% and an accuracy of 95.3% for the diagnosis of hypertension. In validation cohort, the numbers of home BP measurements varied from 8 to 81 times. The validation cohort similarly showed that the C-index of the ratio between the number of high BP readings (≥135/85 mmHg) to the number of BP measurements (R-NHBP/NBP) was 0.985 (95% CI, 0.976–0.994) and the best accuracy was shown at R-NHBP/NBP of ≥0.45. R-NHBP/NBP of ≥0.5 showed a sensitivity of 0.957, a specificity of 0.907 and an accuracy of 0.927. The accuracy of the R-NHBP/NBP of ≥0.5 decreased as SD and the range of SBP increased, whereas it did not change with the number of measurements (Figure 1). R-NHBP/NBP <0.2 predicted normotension and R-NHBP/NBP >0.8 predicted hypertension in 95% confidence. Mean widths of the 95 prediction intervals for the average SBP and DBP were 18.2 mmHg and 12.6 mmHg, respectively (Figure 2).
Conclusion
Counting the number of BP ≥135/85 mmHg can provide accurate assessments for the BP levels. R-NHBP/NBP of ≥0.5 is a simple and accurate marker of high BP in HBPM, and R-NHBP/NBP could be a useful tool to assess BP levels in patients practicing HBPM.
Funding Acknowledgement
Type of funding sources: None. Figure 1Figure 2
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Affiliation(s)
- Y Lee
- Hanyang University Guri Hospital, Seoul, Korea (Republic of)
| | - J Shin
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - J H Shin
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - H J Kim
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - M H Ryu
- Hanyang University Guri Hospital, Seoul, Korea (Republic of)
| | - H C Park
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - H Y Lim
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - J K Park
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - R Heo
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - W H Kim
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
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169
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Kim JH, Hwang GH, Kim HJ, Jeon S, Shin BA. Acer mono Extract Inhibits Invasive Activities and G1/S Transition of HT1080 Fibrosarcoma Cells. Chonnam Med J 2021; 57:185-190. [PMID: 34621638 PMCID: PMC8485087 DOI: 10.4068/cmj.2021.57.3.185] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 09/03/2021] [Accepted: 09/04/2021] [Indexed: 11/08/2022] Open
Abstract
Acer mono is known to contain bioactive substances that exhibit beneficial effects in osteoporosis, gastric ulcers, hepatic damage, and pathologic angiogenesis. The current study aimed to investigate the effects of Acer mono extract on the invasive activities and cell-cycle progression of human fibrosarcoma cells. Cytotoxicity of Acer mono extract was assessed by MTT assay, in-vitro invasiveness of HT1080 fibrosarcoma cells was measured using matrigel assay, expression of invasion- and cell-cycle-related proteins was analyzed by western blot analysis, and that of E2F target genes was quantified using qRT-PCR. Acer mono extract did not show distinct cytotoxicity in the experimental concentrations used. Invasiveness of HT1080 fibrosarcoma cells and expression of cyclin D1 and CDK4 in them were significantly reduced in a dose-dependent manner after treatment with Acer mono extract. Acer mono extract showed inhibitory effects on the G1/S transition during cell-cycle progression; the active phosphorylated Rb protein level was decreased, and expression of E2F target genes was downregulated by the Acer mono extract. Our data collectively demonstrated that Acer mono extract exerts inhibitory effects on the invasiveness and cell-cycle progression of HT1080 human fibrosarcoma cells.
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Affiliation(s)
- Jin Hee Kim
- Department of Microbiology and Immunology, Chonnam National University Medical School, Gwangju, Korea
| | - Gwang Ha Hwang
- Department of Microbiology and Immunology, Chonnam National University Medical School, Gwangju, Korea
| | - Hyun Jung Kim
- College of Pharmacy, Mokpo National University, Mokpo, Korea
| | - Songhee Jeon
- Department of Biomedical Sciences, Center for Creative Biomedical Scientists, Chonnam National University, Gwangju, Korea
| | - Boo Ahn Shin
- Department of Microbiology and Immunology, Chonnam National University Medical School, Gwangju, Korea
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170
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Cha S, Jo YJ, Lee YM, Kim HJ, Kang EJ, Beak SM, Kim GS. Analysis of organ procurement time data. Korean Journal of Transplantation 2021. [DOI: 10.4285/atw2021.op-1052] [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: 11/04/2022] Open
Affiliation(s)
- Sora Cha
- Department of Surgery-Transplantation, Samsung Medical Center, Seoul, Korea
| | | | - Yun Mi Lee
- Department of Surgery-Transplantation, Samsung Medical Center, Seoul, Korea
| | - Hyun Jung Kim
- Department of Surgery-Transplantation, Samsung Medical Center, Seoul, Korea
| | - Eun Jin Kang
- Department of Surgery-Transplantation, Samsung Medical Center, Seoul, Korea
| | - Sun Mi Beak
- Department of Surgery-Transplantation, Samsung Medical Center, Seoul, Korea
| | - Gaab Soo Kim
- Department of Anesthesiology, Samsung Medical Center, Seoul, Korea
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171
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Ahn HS, Lee DH, Kazmi SZ, Kang T, Lee YS, Sung R, Cha J, Choi YJ, Hong G, Hann HJ, Kim HJ. Familial Risk and Its Interaction With Body Mass Index and Physical Activity in Anterior Cruciate Ligament Injury Among First-Degree Relatives: A Population-Based Cohort Study. Am J Sports Med 2021; 49:3312-3321. [PMID: 34491137 DOI: 10.1177/03635465211032643] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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] [Indexed: 01/31/2023]
Abstract
BACKGROUND Genetic and behavioral risk factors have been suggested to play a role in anterior cruciate ligament (ACL) injury. However, population-based familial risk estimates are unavailable. PURPOSE To quantify familial risk of ACL injury among first-degree relatives (FDRs) after controlling for certain behavioral risk factors. To estimate the combined effect of family history and body mass index (BMI) or physical activity on the risk of ACL injury. STUDY DESIGN Cohort study; Level of evidence, 3. METHODS Using nationwide data from the Korean National Health Insurance and National Health Screening Program databases on kinship, lifestyle habits, and anthropometrics, 5,184,603 individuals with blood-related FDRs were identified from 2002 to 2018. Familial risk of ACL injury, as represented as incidence risk ratios (IRRs) with 95% CIs, was analyzed using Cox proportional hazards models among individuals with versus without affected FDRs. Analyses were adjusted for age, sex, and behavioral risk factors. Interaction testing between familial history and BMI or physical activity was performed on an additive scale. RESULTS The risk of ACL injury was 1.79-fold higher (IRR, 1.79; 95% CI, 1.73-1.85) among individuals with versus without affected FDRs, and the incidence was 12.61 per 10,000 person-years. The IRR (95% CI) was highest with affected twins at 4.49 (3.01-6.69), followed by siblings at 2.31 (2.19-2.44), the father at 1.58 (1.49-1.68), and the mother at 1.52 (1.44-1.61). High BMI and high level of physical activity were significantly associated with the risk of ACL injury. Individuals with positive family history and either high BMI or physical activity had a 2.59- and 2.45-fold increased risk of injury as compared with the general population, respectively, and the combined risks exceeded the sum of their independent risks. CONCLUSION Familial factors are risk factors for ACL injury with an additional contribution of 2 behavioral factors: BMI and physical activity level. A significant interaction was observed between family history of ACL injury and high BMI/level of physical activity.
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Affiliation(s)
- Hyeong Sik Ahn
- Department of Preventive Medicine, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Dae-Hee Lee
- Department of Orthopedic Surgery, Samsung Medical Center, School of Medicine, Sungkyunkwan University, Seoul, Republic of Korea
| | - Sayada Zartasha Kazmi
- Department of Preventive Medicine, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Taeuk Kang
- Health and Wellness College, Sungshin Women's University, Seoul, Republic of Korea
| | - Young Sung Lee
- Department of Health Informatics and Management, College of Medicine, Chungbuk National University, Cheongju, Republic of Korea
| | - Ryunsu Sung
- Department of Preventive Medicine, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Jaewoo Cha
- Department of Public Health, Korea University, Seoul, Republic of Korea
| | - Yoon Jung Choi
- Department of Preventive Medicine, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Gahwi Hong
- Department of Preventive Medicine, College of Medicine, Korea University, Seoul, Republic of Korea
| | - Hoo Jae Hann
- College of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - Hyun Jung Kim
- Department of Preventive Medicine, College of Medicine, Korea University, Seoul, Republic of Korea
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172
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Kim HJ, Shah SC, Hann HJ, Kazmi SZ, Kang T, Lee JH, Kim KB, Kang MJ, Ahn HS. Familial Risk of Inflammatory Bowel Disease: A Population-Based Cohort Study in South Korea. Clin Gastroenterol Hepatol 2021; 19:2128-2137.e15. [PMID: 33010407 PMCID: PMC8284845 DOI: 10.1016/j.cgh.2020.09.054] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 09/24/2020] [Accepted: 09/27/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS Despite the rapid increase in inflammatory bowel disease (IBD), population-level familial risk estimates of IBDs still are lacking in Asian-Pacific countries. We aimed to quantify the familial risk of incident IBD among first-degree relatives (FDRs) of individuals with IBD according to age, sex, and familial relationship. METHODS Using the South Korea National Health Insurance database (2002-2017), which has complete population coverage and confirmed accuracy of both FDR information and IBD diagnoses, we constructed a cohort of 21,940,795 study subjects comprising 12 million distinct families. We calculated incidence risk ratios of ulcerative colitis (UC) or Crohn's disease (CD) in individuals of affected FDRs compared with individuals without affected FDRs. RESULTS Of 45,717 individuals with UC and 17,848 individuals with CD, 3.8% and 3.1% represented familial cases, respectively. Overall, there was a 10.2-fold (95% CI, 9.39-11.1) and a 22.1-fold (95% CI, 20.5-24.5) significantly higher adjusted risk of UC and CD among FDRs of individuals with vs without IBD. Familial risk was highest among twins, followed by nontwin siblings, and then offspring of affected parents. Familial risk generally was higher within generations (sibling-sibling) vs between generations (parent-offspring). Familial risk also increased with the increasing number of affected FDRs. CONCLUSIONS According to this population-based analysis, there is a substantially increased risk of IBD among FDRs of affected individuals, with the highest risk among siblings and for CD. These findings might help with an earlier diagnosis and appropriate therapeutic intervention in FDRs of individuals with IBD. Dedicated studies are needed to evaluate the contributions of shared early-in-life environmental exposures and genetic factors.
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Affiliation(s)
- Hyun Jung Kim
- Department of Preventive Medicine, College of Medicine, Korea University, Seoul, Korea
| | - Shailja C Shah
- Division of Gastroenterology, Hepatology, and Nutrition, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Hoo Jae Hann
- Medical Research Institute, College of Medicine, Ewha Womans University, Seoul, Korea
| | - Sayada Zartasha Kazmi
- Department of Preventive Medicine, College of Medicine, Korea University, Seoul, Korea
| | - Taeuk Kang
- Korean Research-based Pharma Industry Association (KRPIA), Seoul, Korea
| | - Jee Hyun Lee
- Department of Pediatrics, Korea University Ansan Hospital, Ansan, Korea
| | - Kyoung-Beom Kim
- Department of Public Health, Graduate School, Korea University, Seoul, Korea
| | - Min Ji Kang
- Department of Public Health, Graduate School, Korea University, Seoul, Korea
| | - Hyeong Sik Ahn
- Department of Preventive Medicine, College of Medicine, Korea University, Seoul, Korea.
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173
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Chong HB, Youn J, Shin W, Kim HJ, Kim DS. Multiplex recreation of human intestinal morphogenesis on a multi-well insert platform by basolateral convective flow. Lab Chip 2021; 21:3316-3327. [PMID: 34323906 DOI: 10.1039/d1lc00404b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Here, we report a multiplex culture system that enables simultaneous recreation of multiple replications of the three-dimensional (3D) microarchitecture of the human intestinal epithelium in vitro. The "basolateral convective flow-generating multi-well insert platform (BASIN)" contains 24 nano-porous inserts and an open basolateral chamber applying controllable convective flow in the basolateral compartment that recreates a biomimetic morphogen gradient using a conventional orbital shaker. The mechanistic approach by which the removal of morphogen inhibitors in the basolateral medium can induce intestinal morphogenesis was applied to manipulate the basolateral convective flow in space and time. In a multiplex BASIN, we successfully regenerated a 3D villi-like intestinal microstructure using the Caco-2 human intestinal epithelium that presents high barrier function with minimal insert-to-insert variations. The enhanced cytodifferentiation and proliferation of the 3D epithelial layers formed in the BASIN were visualized with markers of absorptive (villin) and proliferative cells (Ki67). The paracellular transport and efflux profiles of the microengineered 3D epithelial layers in the BASIN confirmed its reproducibility, robustness, and scalability for multiplex biochemical or pharmaceutical studies. Finally, the BASIN was used to investigate the effects of dextran sodium sulfate on the intestinal epithelial barrier and morphology to validate its practical applicability for investigating the effects of external chemicals on the intestinal epithelium and constructing a leaky-gut model. We envision that the BASIN may provide an improved multiplex, scalable, and physiological intestinal epithelial model that is readily accessible to researchers in both basic and applied sciences.
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Affiliation(s)
- Hyeon Beom Chong
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk 37673, South Korea.
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174
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Kim HJ, Lee E, Nam M, Chung JK, Joo S, Nam Y, Sun W. Contribution of Extracellular Matrix Component Landscapes in the Adult Subventricular Zone to the Positioning of Neural Stem/Progenitor Cells. Exp Neurobiol 2021; 30:275-284. [PMID: 34483142 PMCID: PMC8424380 DOI: 10.5607/en21012] [Citation(s) in RCA: 2] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 08/11/2021] [Accepted: 08/28/2021] [Indexed: 01/01/2023] Open
Abstract
Neurogenesis persists in restricted regions of the adult brain, including the subventricular zone (SVZ). Adult neural stem cells (NSCs) in the SVZ proliferate and give rise to new neurons and glial cells depending on intrinsic and environmental cues. Among the multiple factors that contribute to the chemical, physical, and mechanical components of the neurogenic niche, we focused on the composition of the extracellular matrix (ECM) of vasculature and fractones in the SVZ. The SVZ consists of ECM-rich blood vessels and fractones during development and adulthood, and adult neural stem/progenitor cells (NS/PCs) preferentially attach to the laminin-rich basal lamina. To examine the ECM preference of adult NS/PCs, we designed a competition assay using cell micropatterning. Although both laminin and collagen type IV, which are the main components of basal lamina, act as physical scaffolds, adult NS/PCs preferred to adhere to laminin over collagen type IV. Interestingly, the ECM preference of adult NS/PCs could be manipulated by chemokines such as stromal-derived factor 1 (SDF1) and α6 integrin. As SDF1 re-routes NSCs and their progenitors toward the injury site after brain damage, these results suggest that the alteration in ECM preferences may provide a molecular basis for context-dependent NS/PC positioning.
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Affiliation(s)
- Hyun Jung Kim
- Department of Anatomy, College of Medicine, Korea University, Seoul 02841, Korea.,Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejon 34141, Korea
| | - Eunsoo Lee
- Department of Anatomy, College of Medicine, Korea University, Seoul 02841, Korea.,Fluorescence Core Imaging Center, Ewha Womans University, Seoul 03760, Korea
| | - Myungwoo Nam
- Department of Anatomy, College of Medicine, Korea University, Seoul 02841, Korea
| | - Jae Kwon Chung
- Department of Anatomy, College of Medicine, Korea University, Seoul 02841, Korea
| | - Sunghoon Joo
- Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
| | - Yoonkey Nam
- Department of Bio and Brain Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
| | - Woong Sun
- Department of Anatomy, College of Medicine, Korea University, Seoul 02841, Korea
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175
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Han A, Park T, Kim HJ, Min S, Ha J, Min SK. Editor's Choice - Paclitaxel Coated Balloon Angioplasty vs. Plain Balloon Angioplasty for Haemodialysis Arteriovenous Access Stenosis: A Systematic Review and a Time to Event Meta-Analysis of Randomised Controlled Trials. Eur J Vasc Endovasc Surg 2021; 62:597-609. [PMID: 34420890 DOI: 10.1016/j.ejvs.2021.05.043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 11/14/2020] [Revised: 05/18/2021] [Accepted: 05/30/2021] [Indexed: 12/11/2022]
Abstract
OBJECTIVE A systematic review and meta-analysis of randomised controlled trials (RCTs) was performed to determine the effectiveness and safety of drug coated balloon (DCB) angioplasty compared with uncoated plain balloon (PB) angioplasty in treating arteriovenous access stenosis. METHODS MEDLINE, Embase, Scopus, and the Cochrane Central Register of Controlled Trials were searched for RCTs comparing paclitaxel coated DCB and PB angioplasty for arteriovenous access stenosis. The last date of the literature search was 31 December 2020. Risk of bias of the retrieved studies was assessed with the Cochrane Collaboration tool for assessing risk of bias (RoB 2.0). The random effects model was used to estimate the risk of loss of target lesion patency (six and 12 months) and circuit patency (six and 12 months). Procedure related adverse events and mortality rate were also compared. Patency results were pooled using the time to event meta-analytical method and the quality of evidence was assessed according to the GRADE approach. RESULTS Sixteen eligible trials, including 1 682 lesions, were included in the quantitative analysis for the efficacy and safety of paclitaxel coated DCBs. DCBs were associated with a lower risk of loss of target lesion patency at six months (HR 0.53, 95% CI 0.42 - 0.66) and 12 months (HR 0.60, 95% CI 0.47 - 0.76), and were also associated with improved six and 12 month circuit patency. Overall quality of evidence was moderate to low. Procedural complications were rare, and the risk of death up to 12 months was similar between the two groups (OR 1.03, 95% CI 0.68 - 1.56). CONCLUSION Paclitaxel coated DCBs reduced the risk of loss of target lesion patency and circuit patency in arteriovenous access stenosis compared with PBs. Considering the heterogeneity of the included trials, there is a need to investigate optimal treatment regimens regarding drug dose and agent of the DCB and the treatment procedure.
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Affiliation(s)
- Ahram Han
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea.
| | - Taejin Park
- Department of Surgery, Gyeongsang National University School of Medicine, Jinju, South Korea.
| | - Hyun Jung Kim
- Institute for Evidence Based Medicine, Korea University College of Medicine, Seoul, South Korea
| | - Sangil Min
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea
| | - Jongwon Ha
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea
| | - Seung-Kee Min
- Department of Surgery, Seoul National University College of Medicine, Seoul, South Korea.
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176
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Song JW, Nam HS, Ahn JW, Park HS, Kang DO, Kim HJ, Kim YH, Han J, Choi JY, Lee SY, Kim S, Oh WY, Yoo H, Park K, Kim JW. Macrophage targeted theranostic strategy for accurate detection and rapid stabilization of the inflamed high-risk plaque. Theranostics 2021; 11:8874-8893. [PMID: 34522216 PMCID: PMC8419038 DOI: 10.7150/thno.59759] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 07/21/2021] [Indexed: 12/17/2022] Open
Abstract
Rationale: Inflammation plays a pivotal role in the pathogenesis of the acute coronary syndrome. Detecting plaques with high inflammatory activity and specifically treating those lesions can be crucial to prevent life-threatening cardiovascular events. Methods: Here, we developed a macrophage mannose receptor (MMR)-targeted theranostic nanodrug (mannose-polyethylene glycol-glycol chitosan-deoxycholic acid-cyanine 7-lobeglitazone; MMR-Lobe-Cy) designed to identify inflammatory activity as well as to deliver peroxisome proliferator-activated gamma (PPARγ) agonist, lobeglitazone, specifically to high-risk plaques based on the high mannose receptor specificity. The MMR-Lobe-Cy was intravenously injected into balloon-injured atheromatous rabbits and serial in vivo optical coherence tomography (OCT)-near-infrared fluorescence (NIRF) structural-molecular imaging was performed. Results: One week after MMR-Lobe-Cy administration, the inflammatory NIRF signals in the plaques notably decreased compared to the baseline whereas the signals in saline controls even increased over time. In accordance with in vivo imaging findings, ex vivo NIRF signals on fluorescence reflectance imaging (FRI) and plaque inflammation by immunostainings significantly decreased compared to oral lobeglitazone group or saline controls. The anti-inflammatory effect of MMR-Lobe-Cy was mediated by inhibition of TLR4/NF-κB pathway. Furthermore, acute resolution of inflammation altered the inflamed plaque into a stable phenotype with less macrophages and collagen-rich matrix. Conclusion: Macrophage targeted PPARγ activator labeled with NIRF rapidly stabilized the inflamed plaques in coronary sized artery, which could be quantitatively assessed using intravascular OCT-NIRF imaging. This novel theranostic approach provides a promising theranostic strategy for high-risk coronary plaques.
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Affiliation(s)
- Joon Woo Song
- Multimodal Imaging and Theranostic Lab., Cardiovascular Center, Korea University Guro Hospital, Seoul, South Korea
| | - Hyeong Soo Nam
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
| | - Jae Won Ahn
- Department of Systems Biotechnology, Chung-Ang University, Anseong, South Korea
| | - Hyun-Sang Park
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
| | - Dong Oh Kang
- Multimodal Imaging and Theranostic Lab., Cardiovascular Center, Korea University Guro Hospital, Seoul, South Korea
| | - Hyun Jung Kim
- Multimodal Imaging and Theranostic Lab., Cardiovascular Center, Korea University Guro Hospital, Seoul, South Korea
| | - Yeon Hoon Kim
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
| | - Jeongmoo Han
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
| | - Jah Yeon Choi
- Multimodal Imaging and Theranostic Lab., Cardiovascular Center, Korea University Guro Hospital, Seoul, South Korea
| | - Seung-Yul Lee
- Multimodal Imaging and Theranostic Lab., Cardiovascular Center, Korea University Guro Hospital, Seoul, South Korea
| | - Sunwon Kim
- Multimodal Imaging and Theranostic Lab., Cardiovascular Center, Korea University Guro Hospital, Seoul, South Korea
| | - Wang-Yuhl Oh
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
| | - Hongki Yoo
- Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
| | - Kyeongsoon Park
- Department of Systems Biotechnology, Chung-Ang University, Anseong, South Korea
| | - Jin Won Kim
- Multimodal Imaging and Theranostic Lab., Cardiovascular Center, Korea University Guro Hospital, Seoul, South Korea
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177
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Park YH, Kim HJ. Formulation and stability of horse oil-in-water emulsion by HLB system. Food Sci Biotechnol 2021; 30:931-938. [PMID: 34395024 DOI: 10.1007/s10068-021-00934-8] [Citation(s) in RCA: 2] [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] [Received: 02/07/2021] [Revised: 05/25/2021] [Accepted: 06/08/2021] [Indexed: 11/26/2022] Open
Abstract
Optimal condition was determined to prepare horse oil-in-water (O/W) emulsion stabilized by different HLB system. Span 60 and Tween 60 were used to achieve the predetermined HLB values ranging from 10 to 14 and the surfactant concentrations were adjusted to 10-20%. Fifteen formulated O/W emulsions were characterized by mean particle diameter, zeta-potential (ZP), polydispersity index, and encapsulation efficiency (EE, %). Mean particle diameter decreased with increasing HLB value and surfactant concentration. Particles of the emulsion with HLB 12 and surfactant concentration at 15% were distributed in the size of below 500 nm. The particle diameter and EE (%) of the emulsion with HLB 11 or 12 and surfactant concentration at 15 or 20% were not significantly changed during storage at 40 °C for 15 days. These results suggest the characteristics of horse oil O/W emulsion are dependent on HLB values and surfactant concentration so that affect to emulsion properties during storage.
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Affiliation(s)
- Youn Hyung Park
- Department of Food Bioengineering, Jeju National University, 102 Jejudaehakno, Jeju, 63243 Korea
| | - Hyun Jung Kim
- Department of Food Bioengineering, Jeju National University, 102 Jejudaehakno, Jeju, 63243 Korea
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178
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Jung H, Kim HJ, Choi ES, Lee JY, Park KS, Cho KB, Lee YJ. Effectiveness of oral phloroglucinol as a premedication for unsedated esophagogastroduodenoscopy: A prospective, double-blinded, placebo-controlled, randomized trial. PLoS One 2021; 16:e0255016. [PMID: 34347808 PMCID: PMC8336830 DOI: 10.1371/journal.pone.0255016] [Citation(s) in RCA: 2] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 07/05/2021] [Indexed: 12/12/2022] Open
Abstract
Background Anti-spasmodic agents are commonly injected during esophagogastroduodenoscopy (EGD) to improve visualization of the gastric mucosa by inhibiting gastrointestinal (GI) peristalsis. The availability of oral anti-spasmodic agents would increase convenience. In this study, we evaluated the effectiveness of oral phloroglucinol (Flospan®) as a premedication for unsedated EGD. Methods A prospective, double-blinded, placebo-controlled, randomized controlled trial was conducted in a tertiary hospital. Individuals scheduled to undergo unsedated EGD were randomly assigned to receive either oral phloroglucinol or matching placebo 15 min before EGD. The primary outcome was the rate of complete gastric peristalsis suppression. Outcomes were assessed by independent investigators according to the classification of gastric peristalsis and ease of intragastric observation at the beginning (Period A) and end (Period B) of EGD. Results Overall, 71 phloroglucinol-treated and 71 placebo-treated participants (n = 142 total) were included. The phloroglucinol group showed significantly higher proportions of participants with complete gastric peristalsis suppression than the placebo group (22.5% vs. 9.9%, P = 0.040). The ease of intragastric observation was significantly better in the phloroglucinol group than in the placebo group at Periods A (P < 0.001) and B (P = 0.005). Patients in both groups had comparable adverse events and showed willingness to take the premedication at their next examination. Conclusions Oral phloroglucinol significantly suppressed gastrointestinal peristalsis during unsedated EGD compared with placebo (Clinical trial registration number: NCT03342118).
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Affiliation(s)
- HyeIn Jung
- Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - Hyun Jung Kim
- Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - Eun Sung Choi
- Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - Ju Yup Lee
- Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - Kyung Sik Park
- Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - Kwang Bum Cho
- Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - Yoo Jin Lee
- Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Republic of Korea
- * E-mail:
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179
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Sung JY, Lee YJ, Cho YJ, Shin MN, Lee SJ, Lee HS, Koh H, Bae JW, Shin JH, Kim HJ, Lee DW. A large-scale metagenomic study for enzyme profiles using the focused identification of the NGS-based definitive enzyme research (FINDER) strategy. Biotechnol Bioeng 2021; 118:4360-4374. [PMID: 34309016 DOI: 10.1002/bit.27904] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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: 01/23/2021] [Revised: 04/23/2021] [Accepted: 07/23/2021] [Indexed: 11/09/2022]
Abstract
Excavating the molecular details of many diverse enzymes from metagenomes remains challenging in agriculture, food, health, and environmental fields. We present a versatile method that accelerates metabolic enzyme discovery for highly selective gene capture in metagenomes using next-generation sequencing. Culture-independent enzyme mining of environmental DNA is based on a set of short identifying degenerate sequences specific for a wide range of enzyme superfamilies, followed by multiplexed DNA barcode sequencing. A strategy of 'focused identification of next-generation sequencing-based definitive enzyme research' enabled us to generate targeted enzyme datasets from metagenomes, resulting in minimal hands-on obtention of high-throughput biological diversity and potential function profiles, without being time-consuming. This method also provided a targeted inventory of predicted proteins and molecular features of metabolic activities from several metagenomic samples. We suggest that the efficiency and sensitivity of this method will accelerate the decryption of microbial diversity and the signature of proteins and their metabolism from environmental samples.
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Affiliation(s)
- Jae-Yoon Sung
- Department of Biotechnology, Yonsei University, Seoul, South Korea
| | - Yong-Jik Lee
- Department of Bio-Cosmetics, Seowon University, Chung-Ju, South Korea
| | - Yong-Joon Cho
- Department of Biological Sciences and Research Institute of Basic Sciences, Seoul National University, Seoul, South Korea
| | - Myeong-Na Shin
- Department of Central Area Crop Science, NICS, RDA, Suwon, South Korea
| | - Sang-Jae Lee
- Major in Food Biotechnology, Silla University, Busan, South Korea
| | - Han-Seung Lee
- Major in Food Biotechnology, Silla University, Busan, South Korea
| | - Hong Koh
- Department of Pediatrics, Yonsei University, Seoul, South Korea
| | - Jin-Woo Bae
- Department of Biology, Kyung Hee University, Seoul, South Korea
| | - Jae-Ho Shin
- Department of Applied Biosciences, Kyungpook National University, Daegu, South Korea
| | - Hyun Jung Kim
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, Texas, USA
| | - Dong-Woo Lee
- Department of Biotechnology, Yonsei University, Seoul, South Korea
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Abstract
Background: Few small-scale studies have reported a genetic and familial predisposition in Hashimoto's thyroiditis (HT), however, quantified familial risk estimates from population-level data are unavailable. We aimed to estimate the incidence and familial risk of HT among first-degree relatives (FDR) according to age, sex, and family relationships. Methods: We conducted a population-based study in the general population of Korea from 2002 to 2017. Using the nationwide health insurance database, which has full population coverage and family relationship information, a cohort of 22 million individuals with blood-related FDR comprising 12 million families were followed up for a familial occurrence of HT. Age- and sex-adjusted incidence risk ratios (IRRs) were calculated in individuals with an affected FDR compared with those without an affected FDR. Results: Among 21,940,795 individuals, 234,912 had an HT-affected FDR, of whom 2425 familial cases developed HT with an incidence of 7.12/10,000 person-years. The familial risk for HT was 6.5-fold (95% confidence interval [CI]: 6.24-6.78) higher in individuals with versus without affected FDR. According to relationship, familial risks were IRR 102.71, IRR 7.80, IRR 5.54, and IRR 5.52 with an affected twin, sibling, mother, and father, respectively, and the corresponding incidence (/10,000 person-years) was 115.57, 10.66, 5.73, and 5.91. Same-sex twins had three times higher risk of developing HT than opposite-sex twins (IRR 121.01 vs. 21.46). The sex-specific familial risk was higher in males than females. The risks demonstrated age dependence, being higher in younger age groups. Conclusions: This study represents the largest population-based study of familial HT risk in Asia. We demonstrated elevated familial risk of incident HT among FDR, but with lower magnitude as those observed in previous studies. Familial risk increased with the degree of genetic relatedness among FDR indicating a prominent role of genetic factors in the familial aggregation of HT. Elevated risks in the younger age groups should motivate clinicians to screen people with a family history, especially those <30 years.
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Affiliation(s)
- Hyun Jung Kim
- Department of Preventive Medicine, College of Medicine, Korea University, Seoul, Korea
| | - Sayada Zartasha Kazmi
- Department of Preventive Medicine, College of Medicine, Korea University, Seoul, Korea
| | - Taeuk Kang
- Korean Research-Based Pharma Industry Association (KRPIA), Seoul, Korea
| | - Seo Young Sohn
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Hanyang University College of Medicine, Myongji Hospital, Goyang, Korea
| | - Dong-Sook Kim
- Health Insurance Review and Assessment Service (HIRA), Wonju, Korea
| | - Hoo Jae Hann
- Medical Research Institute, College of Medicine, Ewha Womans University, Seoul, Korea
| | - Hyeong Sik Ahn
- Department of Preventive Medicine, College of Medicine, Korea University, Seoul, Korea
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Hur KY, Moon MK, Park JS, Kim SK, Lee SH, Yun JS, Baek JH, Noh J, Lee BW, Oh TJ, Chon S, Yang YS, Son JW, Choi JH, Song KH, Kim NH, Kim SY, Kim JW, Rhee SY, Lee YB, Jin SM, Kim JH, Kim CH, Kim DJ, Chun S, Rhee EJ, Kim HM, Kim HJ, Jee D, Kim JH, Choi WS, Lee EY, Yoon KH, Ko SH. 2021 Clinical Practice Guidelines for Diabetes Mellitus of the Korean Diabetes Association. Diabetes Metab J 2021; 45:461-481. [PMID: 34352984 PMCID: PMC8369224 DOI: 10.4093/dmj.2021.0156] [Citation(s) in RCA: 114] [Impact Index Per Article: 38.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Accepted: 07/21/2021] [Indexed: 12/15/2022] Open
Abstract
The Committee of Clinical Practice Guidelines of the Korean Diabetes Association (KDA) updated the previous clinical practice guidelines for Korean adults with diabetes and prediabetes and published the seventh edition in May 2021. We performed a comprehensive systematic review of recent clinical trials and evidence that could be applicable in real-world practice and suitable for the Korean population. The guideline is provided for all healthcare providers including physicians, diabetes experts, and certified diabetes educators across the country who manage patients with diabetes or the individuals at the risk of developing diabetes mellitus. The recommendations for screening diabetes and glucose-lowering agents have been revised and updated. New sections for continuous glucose monitoring, insulin pump use, and non-alcoholic fatty liver disease in patients with diabetes mellitus have been added. The KDA recommends active vaccination for coronavirus disease 2019 in patients with diabetes during the pandemic. An abridgement that contains practical information for patient education and systematic management in the clinic was published separately.
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Affiliation(s)
- Kyu Yeon Hur
- Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Min Kyong Moon
- Department of Internal Medicine, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea
| | - Jong Suk Park
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Soo-Kyung Kim
- Division of Endocrinology and Metabolism, Department of Internal Medicine, CHA Bundang Medical Center, CHA University, Seongnam, Korea
| | - Seung-Hwan Lee
- Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Jae-Seung Yun
- Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Jong Ha Baek
- Division of Endocrinology & Metabolism, Department of Medicine, Gyeongsang National University Changwon Hospital, Gyeongsang National University College of Medicine, Changwon, Korea
| | - Junghyun Noh
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Inje University Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Korea
| | - Byung-Wan Lee
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Tae Jung Oh
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Suk Chon
- Department of Endocrinology and Metabolism, Kyung Hee University College of Medicine, Kyung Hee University Hospital, Seoul, Korea
| | - Ye Seul Yang
- Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Jang Won Son
- Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Jong Han Choi
- Division of Endocrinology and Metabolism, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
| | - Kee Ho Song
- Division of Endocrinology and Metabolism, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
| | - Nam Hoon Kim
- Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - Sang Yong Kim
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Chosun University College of Medicine, Gwangju, Korea
| | - Jin Wha Kim
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Chosun University College of Medicine, Gwangju, Korea
| | - Sang Youl Rhee
- Department of Endocrinology and Metabolism, Kyung Hee University College of Medicine, Kyung Hee University Hospital, Seoul, Korea
| | - You-Bin Lee
- Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Sang-Man Jin
- Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jae Hyeon Kim
- Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Chong Hwa Kim
- Division of Endocrinology & Metabolism, Department of Internal Medicine, Sejong General Hospital, Bucheon, Korea
| | - Dae Jung Kim
- Department of Endocrinology and Metabolism, Ajou University School of Medicine, Suwon, Korea
| | - SungWan Chun
- Department of Internal Medicine, Soonchunhyang University Cheonan Hospital, Soonchunhyang University College of Medicine, Cheonan, Korea
| | - Eun-Jung Rhee
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Hyun Min Kim
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Hyun Jung Kim
- Institute for Evidence-based Medicine, Cochrane Korea, Department of Preventive Medicine, Korea University College of Medicine, Seoul, Korea
| | - Donghyun Jee
- Division of Vitreous and Retina, Department of Ophthalmology, St. Vincent’s Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea
| | - Jae Hyun Kim
- Department of Pediatrics, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Won Seok Choi
- Division of Infectious Diseases, Department of Internal Medicine, Korea University College of Medicine, Korea University Ansan Hospital, Ansan, Korea
| | - Eun-Young Lee
- Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Kun-Ho Yoon
- Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Seung-Hyun Ko
- Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
- Corresponding author: Seung-Hyun Ko https://orcid.org/0000-0003-3703-1479 Division of Endocrinology & Metabolism, Department of Internal Medicine, St. Vincent’s Hospital, College of Medicine, The Catholic University of Korea, 93 Jungbu-daero, Paldal-gu, Suwon 16247, Korea E-mail:
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Kim HJ, Cho H, Park M, Kim JW, Ahn SJ, Lyoo CH, Suh SH, Ryu YH. MRI-Visible Perivascular Spaces in the Centrum Semiovale Are Associated with Brain Amyloid Deposition in Patients with Alzheimer Disease-Related Cognitive Impairment. AJNR Am J Neuroradiol 2021; 42:1231-1238. [PMID: 33985952 DOI: 10.3174/ajnr.a7155] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 01/21/2021] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE The association of perivascular spaces in the centrum semiovale with amyloid accumulation among patients with Alzheimer disease-related cognitive impairment is unknown. We evaluated this association in patients with Alzheimer disease-related cognitive impairment and β-amyloid deposition, assessed with [18F] florbetaben PET/CT. MATERIALS AND METHODS MR imaging and [18F] florbetaben PET/CT images of 144 patients with Alzheimer disease-related cognitive impairment were retrospectively evaluated. MR imaging-visible perivascular spaces were rated on a 4-point visual scale: a score of ≥3 or <3 indicated a high or low degree of MR imaging-visible perivascular spaces, respectively. Amyloid deposition was evaluated using the brain β-amyloid plaque load scoring system. RESULTS Compared with patients negative for β-amyloid, those positive for it were older and more likely to have lower cognitive function, a diagnosis of Alzheimer disease, white matter hyperintensity, the Apolipoprotein E ε4 allele, and a high degree of MR imaging-visible perivascular spaces in the centrum semiovale. Multivariable analysis, adjusted for age and Apolipoprotein E status, revealed that a high degree of MR imaging-visible perivascular spaces in the centrum semiovale was independently associated with β-amyloid positivity (odds ratio, 2.307; 95% CI, 1.036-5.136; P = .041). CONCLUSIONS A high degree of MR imaging-visible perivascular spaces in the centrum semiovale independently predicted β-amyloid positivity in patients with Alzheimer disease-related cognitive impairment. Thus, MR imaging-visible perivascular spaces in the centrum semiovale are associated with amyloid pathology of the brain and could be an indirect imaging marker of amyloid burden in patients with Alzheimer disease-related cognitive impairment.
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Affiliation(s)
- H J Kim
- From the Department of Nuclear Medicine (H.J.K., Y.H.R.)
- Department of Nuclear Medicine (H.J.K.), Yongin Severance Hospital, Yonsei University College of Medicine, Yongin-si, South Korea
| | | | - M Park
- Radiology (M.P., J.W.K., S.J.A., S.H.S.), Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - J W Kim
- Radiology (M.P., J.W.K., S.J.A., S.H.S.), Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - S J Ahn
- Radiology (M.P., J.W.K., S.J.A., S.H.S.), Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | | | - S H Suh
- Radiology (M.P., J.W.K., S.J.A., S.H.S.), Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - Y H Ryu
- From the Department of Nuclear Medicine (H.J.K., Y.H.R.)
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183
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Ahn HS, Kim HJ, Kazmi SZ, Kang T, Jun JB, Kang MJ, Kim KB, Kee SH, Kim DS, Hann HJ. Familial risk of Behçet's disease among first-degree relatives: a population-based aggregation study in Korea. Rheumatology (Oxford) 2021; 60:2697-2705. [PMID: 33241295 DOI: 10.1093/rheumatology/keaa682] [Citation(s) in RCA: 2] [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] [Received: 01/12/2020] [Revised: 09/19/2020] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVE Previous studies have indicated that Behçet's disease (BD) has a genetic component, however population-level familial risk estimates are unavailable. We quantified the familial incidence and risk of BD in first-degree relatives (FDR) according to age, sex and type of family relationship. METHODS Using the Korean National Health Insurance database, which has full population coverage and confirmed FDR information, we constructed a cohort of 21 940 795 individuals comprising 12 million families, which were followed for a familial occurrence of BD from 2002 to 2017. Age- and sex-adjusted incidence risk ratios for BD were calculated in individuals with affected FDR compared with those without affected FDR. RESULTS Among the total study population, 53 687 individuals had affected FDR, of whom 284 familial cases developed BD with an incidence of 3.57/104 person-years. The familial risk (incidence) for BD was increased to 13.1-fold (2.71/104 person-years) in individuals with an affected father, 13.9-fold (3.11/104 person-years) with affected mother, 15.2-fold (4.9/104 person-years) with an affected sibling and the highest risk was 165-fold (46/104 person-years) with an affected twin. Familial risks showed age dependence, being higher in younger age groups. The sex-specific familial risk was similar in males and females. CONCLUSION This study provides quantified estimates of familial incidence and risk in FDR of BD patients in an entire population. Familial risks were higher within generation (sibling-sibling) vs between generations (parent-offspring). This implicates complex interactions between genetic factors and shared childhood environmental exposures in the pathogenesis of BD.
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Affiliation(s)
- Hyeong Sik Ahn
- Department of Preventive Medicine, College of Medicine, Korea University, Seoul, Korea
| | - Hyun Jung Kim
- Department of Preventive Medicine, College of Medicine, Korea University, Seoul, Korea
| | - Sayada Zartasha Kazmi
- Department of Preventive Medicine, College of Medicine, Korea University, Seoul, Korea
| | - Taeuk Kang
- Korean Research-based Industry Association (KRPIA), Seoul, Korea
| | - Jae-Bum Jun
- Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul, Korea
| | - Min Ji Kang
- Department Public Health, Graduate School, Korea University, Seoul, Korea
| | - Kyoung-Beom Kim
- Department Public Health, Graduate School, Korea University, Seoul, Korea
| | - Sun-Ho Kee
- Department of Microbiology, College of Medicine, Korea University, Seoul, Korea
| | - Dong-Sook Kim
- Health Insurance Review and Assessment service (HIRA), Seoul, Korea
| | - Hoo Jae Hann
- Medical Research Institute, School of Medicine, Ewha Woman's University, Seoul, Korea
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184
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Lim ES, Baek SY, Oh T, Koo M, Lee JY, Kim HJ, Kim JS. Strain variation in Bacillus cereus biofilms and their susceptibility to extracellular matrix-degrading enzymes. PLoS One 2021; 16:e0245708. [PMID: 34133441 PMCID: PMC8208538 DOI: 10.1371/journal.pone.0245708] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 06/02/2021] [Indexed: 01/25/2023] Open
Abstract
Bacillus cereus is a foodborne pathogen and can form biofilms on food contact surfaces, which causes food hygiene problems. While it is necessary to understand strain-dependent variation to effectively control these biofilms, strain-to-strain variation in the structure of B. cereus biofilms is poorly understood. In this study, B. cereus strains from tatsoi (BC4, BC10, and BC72) and the ATCC 10987 reference strain were incubated at 30°C to form biofilms in the presence of the extracellular matrix-degrading enzymes DNase I, proteinase K, dispase II, cellulase, amyloglucosidase, and α-amylase to assess the susceptibility to these enzymes. The four strains exhibited four different patterns in terms of biofilm susceptibility to the enzymes as well as morphology of surface-attached biofilms or suspended cell aggregates. DNase I inhibited the biofilm formation of strains ATCC 10987 and BC4 but not of strains BC10 and BC72. This result suggests that some strains may not have extracellular DNA, or their extracellular DNA may be protected in their biofilms. In addition, the strains exhibited different patterns of susceptibility to protein- and carbohydrate-degrading enzymes. While other strains were resistant, strains ATCC 10987 and BC4 were susceptible to cellulase, suggesting that cellulose or its similar polysaccharides may exist and play an essential role in their biofilm formation. Our compositional and imaging analyses of strains ATCC 10987 and BC4 suggested that the physicochemical properties of their biofilms are distinct, as calculated by the carbohydrate to protein ratio. Taken together, our study suggests that the extracellular matrix of B. cereus biofilms may be highly diverse and provides insight into the diverse mechanisms of biofilm formation among B. cereus strains.
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Affiliation(s)
- Eun Seob Lim
- Department of Food Biotechnology, Korea University of Science and Technology, Yuseong-gu, Daejeon, Republic of Korea
- Research Group of Consumer Safety, Research Division of Strategic Food Technology, Korea Food Research Institute, Wanju-gun, Jeollabuk-do, Republic of Korea
| | - Seung-Youb Baek
- Research Group of Consumer Safety, Research Division of Strategic Food Technology, Korea Food Research Institute, Wanju-gun, Jeollabuk-do, Republic of Korea
| | - Taeyoung Oh
- Research Group of Consumer Safety, Research Division of Strategic Food Technology, Korea Food Research Institute, Wanju-gun, Jeollabuk-do, Republic of Korea
| | - Minseon Koo
- Department of Food Biotechnology, Korea University of Science and Technology, Yuseong-gu, Daejeon, Republic of Korea
- Food Analysis Center, Korea Food Research Institute, Wanju-gun, Jeollabuk-do, Republic of Korea
| | - Joo Young Lee
- Research Group of Consumer Safety, Research Division of Strategic Food Technology, Korea Food Research Institute, Wanju-gun, Jeollabuk-do, Republic of Korea
- Department of Food Science and Biotechnology, Sungkyunkwan University, Jangan-gu, Suwon, Republic of Korea
| | - Hyun Jung Kim
- Department of Food Biotechnology, Korea University of Science and Technology, Yuseong-gu, Daejeon, Republic of Korea
- Research Group of Consumer Safety, Research Division of Strategic Food Technology, Korea Food Research Institute, Wanju-gun, Jeollabuk-do, Republic of Korea
- * E-mail: (HJK); (JSK)
| | - Joo-Sung Kim
- Department of Food Biotechnology, Korea University of Science and Technology, Yuseong-gu, Daejeon, Republic of Korea
- Research Group of Consumer Safety, Research Division of Strategic Food Technology, Korea Food Research Institute, Wanju-gun, Jeollabuk-do, Republic of Korea
- * E-mail: (HJK); (JSK)
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185
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Choi SY, Hong JY, Kim HJ, Lee GY, Cheong SH, Jung HJ, Bang CH, Lee DH, Jue MS, Kim HO, Park EJ, Ko JY, Son SW. Mask-induced dermatoses during the COVID-19 pandemic: a questionnaire-based study in 12 Korean hospitals. Clin Exp Dermatol 2021; 46:1504-1510. [PMID: 34081799 PMCID: PMC8239570 DOI: 10.1111/ced.14776] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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: 04/08/2021] [Revised: 05/20/2021] [Accepted: 05/31/2021] [Indexed: 12/18/2022]
Abstract
BACKGROUND During the coronavirus disease 2019 (COVID-19) pandemic, various adverse skin reactions to long-term mask wearing have been reported. AIM To assess the clinical features of mask-induced dermatoses and to recommend prevention and treatment options. METHODS From April to August 2020, questionnaires including topics such as demographic information, pre-existing skin disorders, reported mask-related symptoms, daily mask-wearing duration and frequency, types of masks used and whether the participant was a healthcare worker, were distributed to patients in 12 hospitals. Dermatologists assessed skin lesions, confirmed diagnosis and recorded treatments. RESULTS Itchiness was the most frequent symptom, mostly affecting the cheeks. The most common skin disease was new-onset contact dermatitis (33.94%), followed by new-onset acne (16.97%) and worsening of pre-existing acne (16.97%). Daily wearing of masks was significantly (P = 0.02) associated with new-onset contact dermatitis. More than half of patients with pre-existing skin problems experienced disease worsening while wearing masks. Longer duration of wearing (> 6 h/day, P = 0.04) and use of cotton masks (P < 0.001) significantly increased acne flare-up. Healthcare workers had a higher incidence of skin disease. Skin lesions were generally mild and well tolerated with topical treatment. The study had some limitations: the effect of seasonal characteristics and other risk factors were not assessed, and the patients were visiting dermatological clinics and had interest in their skin status, thus, there may have been selection bias. CONCLUSION Mask-induced/-triggered dermatoses contribute to increase the dermatological burden during the pandemic.
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Affiliation(s)
- S Y Choi
- Department of Dermatology, Ilsan Paik Hospital, Inje University College of Medicine, Seoul, Korea
| | - J Y Hong
- Department of Dermatology, Chungnam National University Sejong Hospital, Chungnam National University College of Medicine, Sejong, Korea
| | - H J Kim
- Department of Dermatology, Gachon University Gil Medical Center, Gachon University College of Medicine, Incheon, Korea
| | - G-Y Lee
- Department of Dermatology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - S H Cheong
- Department of Dermatology, Konyang University, Daejeon, Korea
| | - H J Jung
- Department of Dermatology, National Medical Center, Seoul, Korea
| | - C H Bang
- Department of Dermatology, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - D H Lee
- Department of Dermatology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - M-S Jue
- Department of Dermatology, Veterans Health Service Medical Center, Seoul, Korea
| | - H O Kim
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Seoul, Korea
| | - E J Park
- Department of Dermatology, College of Medicine, Hallym University, Seoul, Korea
| | - J Y Ko
- Department of Dermatology, Hanyang University College of Medicine and Hanyang University Seoul Hospital, Seoul, Korea
| | - S W Son
- Department of Dermatology, Korea University College of Medicine, Seoul, Korea
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Kim HJ, Choi GS, Song SH, Park JS, Park SY, Lee SM, Choi JA. An initial experience with a novel technique of single-port robotic resection for rectal cancer. Tech Coloproctol 2021; 25:857-864. [PMID: 34052901 DOI: 10.1007/s10151-021-02457-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [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: 10/08/2020] [Accepted: 05/04/2021] [Indexed: 10/21/2022]
Abstract
BACKGROUND The da Vinci single-port (SP) system is designed to facilitate single-incision robotic surgery in a narrow space. We developed a new procedure of rectal resection using this system. The aim of the present study was to evaluate the technical feasibility and safety of SP robotic rectal resection for rectal cancer patients based on our initial experience. METHODS A study was conducted on consecutive patients with mid or low rectal cancer who had SP robotic resection at our institution between July and September 2020. The demographic characteristics, perioperative data, and pathology results of the patients were retrospectively analyzed. RESULTS There were 5 patients (3 males, 2 females, median age 57 years (range 36-73 years). The median tumor height from the anal verge was 4 cm (range 3-5 cm). Two patients received preoperative chemoradiotherapy for advanced rectal cancer. A single docking was conducted, and the median docking time was 4 min 20 s (range 3 min 30 s to 5 min). The median total operation time was 195 min (range 155-240 min), and the median time of pelvic dissection was 45 min (range 36-62 min). All patients had circumferential and distal tumor-free resection margins. One patient experienced an anastomosis-related complication. The median duration of hospital stay was 7 days (range 7-8 days). CONCLUSIONS Our initial experience suggests that SP robotic rectal resection is safe and feasible. Further clinical trials comparing SP and multiport robotic rectal resection should be conducted to verify the superior aspects of this new system.
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Affiliation(s)
- H J Kim
- Colorectal Cancer Center, Kyungpook National University Chilgok Hospital, School of Medicine, Kyungpook National University , 807 Hogukro, Buk-gu, Daegu, 41404, South Korea
| | - G-S Choi
- Colorectal Cancer Center, Kyungpook National University Chilgok Hospital, School of Medicine, Kyungpook National University , 807 Hogukro, Buk-gu, Daegu, 41404, South Korea.
| | - S H Song
- Colorectal Cancer Center, Kyungpook National University Chilgok Hospital, School of Medicine, Kyungpook National University , 807 Hogukro, Buk-gu, Daegu, 41404, South Korea
| | - J S Park
- Colorectal Cancer Center, Kyungpook National University Chilgok Hospital, School of Medicine, Kyungpook National University , 807 Hogukro, Buk-gu, Daegu, 41404, South Korea
| | - S Y Park
- Colorectal Cancer Center, Kyungpook National University Chilgok Hospital, School of Medicine, Kyungpook National University , 807 Hogukro, Buk-gu, Daegu, 41404, South Korea
| | - S M Lee
- Colorectal Cancer Center, Kyungpook National University Chilgok Hospital, School of Medicine, Kyungpook National University , 807 Hogukro, Buk-gu, Daegu, 41404, South Korea
| | - J A Choi
- Colorectal Cancer Center, Kyungpook National University Chilgok Hospital, School of Medicine, Kyungpook National University , 807 Hogukro, Buk-gu, Daegu, 41404, South Korea
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Kim HJ, Lee HS, Kazmi SZ, Hann HJ, Kang T, Cha J, Choi S, Swan H, Kim H, Lee YS, Ahn HS. Familial risk for endometriosis and its interaction with smoking, age at menarche and body mass index: a population-based cohort study among siblings. BJOG 2021; 128:1938-1948. [PMID: 34028167 DOI: 10.1111/1471-0528.16769] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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: 04/10/2021] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To quantify familial risk of endometriosis among full siblings and examine interactions between family history and smoking, age at menarche or body mass index (BMI). DESIGN, SETTING AND POPULATION Population-based nationwide cohort study. METHODS Using data from the Korean National Health Insurance and Screening Programme databases on kinship, healthcare utilisation, lifestyle and anthropometrics, we identified 2 109 288 women with full siblings and their environmental risk factors from 2002 to 2018. Familial risks were estimated using Cox proportional-hazards models, represented as incidence risk ratios (IRR) with 95% CI. Interaction between family history and smoking, age at menarche or BMI were assessed on an additive scale. MAIN OUTCOME MEASURES IRR of endometriosis among women with and without affected siblings. RESULTS From 19 195 women with affected siblings, 1126 developed endometriosis with an incidence of 35.45/10 000 person-years. Familial risk of endometriosis with versus without affected siblings was increased to IRR 2.75 (95% CI 2.25-3.36), and the highest risk was with affected twins (IRR 6.98; 95% CI 4.19-11.62). Women with both a family history and either smoking, early menarche or low BMI had a significantly higher risk of endometriosis compared with the general population and can be regarded as a high-risk group, the IRRs were 4.28 (95% CI 2.43-7.55), 3.47 (95% CI 2.82-4.26) and 3.09 (95% CI 2.68-3.56), respectively. Substantial effect modification of the associations was noted by smoking and early menarche, as their combined risk with family history exceeded the sum of their individual risks, which was also statistically significant. CONCLUSION Genetic factors are the primary contributor to the familial aggregation of endometriosis. Significant gene-environment interaction exists between family history and smoking or early menarche.
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Affiliation(s)
- H J Kim
- Department of Preventive Medicine, College of Medicine, Korea University, Seoul, Korea
| | - H-S Lee
- Department of Preventive Medicine, College of Medicine, Korea University, Seoul, Korea
| | - S Z Kazmi
- Department of Preventive Medicine, College of Medicine, Korea University, Seoul, Korea
| | - H J Hann
- Medical Research Institute, College of Medicine, Ewha Womans University, Seoul, Korea
| | - T Kang
- Health and Wellness College, Sungshin Women's University, Seoul, Korea
| | - J Cha
- Department of Public Health, Korea University, Seoul, Korea
| | - S Choi
- Department of Preventive Medicine, College of Medicine, Korea University, Seoul, Korea
| | - H Swan
- Department of Preventive Medicine, College of Medicine, Korea University, Seoul, Korea
| | - H Kim
- Department of Obstetrics and Gynaecology, Seoul National University Hospital, Seoul, Korea
| | - Y S Lee
- Department of Health Informatics and Management, College of Medicine, Chungbuk National University, Cheongju, Korea
| | - H S Ahn
- Department of Preventive Medicine, College of Medicine, Korea University, Seoul, Korea
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Ha J, Lee J, Oh H, Kim HJ, Choi Y, Lee Y, Kim Y, Lee H, Kim S, Yoon Y. Erratum to: Description of Kinetic Behavior of Pathogenic Escherichia coli in Cooked Pig Trotters under Dynamic Storage Conditions Using Mathematical Equations. Food Sci Anim Resour 2021; 41:353. [PMID: 33987555 PMCID: PMC8115005 DOI: 10.5851/kosfa.2021.e6] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Affiliation(s)
- Jimyeong Ha
- Risk Analysis Research Center, Sookmyung Women's University, Seoul 04310, Korea
| | - Jeeyeon Lee
- Department of Food and Nutrition, Dong-eui University, Busan 47340, Korea
| | - Hyemin Oh
- Department of Food and Nutrition, Sookmyung Women's University, Seoul 04310, Korea
| | - Hyun Jung Kim
- Research Group of Consumer Safety, Korea Food Research Institute, Jeollabuk-do 55365, Korea.,Department of Food Biotechnology, University of Science and Technology, Daejeon 34113, Korea
| | - Yukyung Choi
- Department of Food and Nutrition, Sookmyung Women's University, Seoul 04310, Korea
| | - Yewon Lee
- Department of Food and Nutrition, Sookmyung Women's University, Seoul 04310, Korea
| | - Yujin Kim
- Department of Food and Nutrition, Sookmyung Women's University, Seoul 04310, Korea
| | - Heeyoung Lee
- Food Standard Research Center, Korea Food Research Institute, Jeollabuk-do 55365, Korea
| | - Sejeong Kim
- Risk Analysis Research Center, Sookmyung Women's University, Seoul 04310, Korea
| | - Yohan Yoon
- Risk Analysis Research Center, Sookmyung Women's University, Seoul 04310, Korea.,Department of Food and Nutrition, Sookmyung Women's University, Seoul 04310, Korea
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189
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Kang YE, Kim JM, Lim MA, Lee SE, Yi S, Kim JT, Oh C, Liu L, Jin Y, Jung SN, Won HR, Chang JW, Lee JH, Kim HJ, Koh HY, Jun S, Cho SW, Shong M, Koo BS. Growth Differentiation Factor 15 is a Cancer Cell-Induced Mitokine That Primes Thyroid Cancer Cells for Invasiveness. Thyroid 2021; 31:772-786. [PMID: 33256569 DOI: 10.1089/thy.2020.0034] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Background: Mitochondrial stress is known to activate the mitochondrial unfolded protein response (UPRmt). The UPRmt results in the secretion of mitochondrial cytokines (mitokines), which can promote a hormetic response cell nonautonomously, and has been reported to be protumorigenic. Growth differentiation factor 15 (GDF15) is a well-characterized mitokine, which is reported to have a mitohormetic effect. Thus, we investigated whether GDF15 induction could prime a subpopulation of thyroid cancer cells to provide invasive advantages. Methods: The UPRmt, including mitokine expression, was assessed in the context of thyroid cancer in vitro and in vivo. GDF15 expression in 266 patients with papillary thyroid carcinoma (PTC) was determined by immunohistochemistry. The serum levels of GDF15 were measured in healthy subjects and PTC patients. In addition, our own and The Cancer Genome Atlas data were analyzed to determine the expression level of GDF15 in thyroid cancers. The role of GDF15 in tumor aggressiveness was investigated by observing the effects of GDF15 knockdown in BCPAP, TPC-1, 8505C, and FRO cells. Results: Pharmacological inhibition of mitochondrial oxidative phosphorylation function in thyroid cancer cells robustly increased GDF15 expression. The expression of GDF15 was associated with activation of the mitochondrial integrated stress response pathway in PTC patients. Circulating GDF15 levels were significantly higher in PTC patients than in the controls, and tumor expression of GDF15 was related to tumor aggressiveness. In vitro and in vivo knockdown of GDF15 in a thyroid cancer model showed decreased viability, migration, and invasion compared with the control cells via regulation of STAT3. Conclusions: In this study, we demonstrated that GDF15 is a mitokine induced in thyroid cancer cells upon mitochondrial stress. GDF15-induced STAT3 activation determined tumor progression in thyroid cancer. The GDF15-STAT3 signaling axis may be a target in aggressiveness of thyroid cancer.
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MESH Headings
- Adenoma, Oxyphilic/genetics
- Adenoma, Oxyphilic/metabolism
- Adenoma, Oxyphilic/pathology
- Cell Line, Tumor
- Gene Knockdown Techniques
- Growth Differentiation Factor 15/genetics
- Growth Differentiation Factor 15/metabolism
- Humans
- Mitochondria
- Neoplasm Invasiveness
- RNA, Messenger/metabolism
- Reverse Transcriptase Polymerase Chain Reaction
- STAT3 Transcription Factor/metabolism
- Signal Transduction
- Thyroid Cancer, Papillary/genetics
- Thyroid Cancer, Papillary/metabolism
- Thyroid Cancer, Papillary/pathology
- Thyroid Carcinoma, Anaplastic/genetics
- Thyroid Carcinoma, Anaplastic/metabolism
- Thyroid Carcinoma, Anaplastic/pathology
- Thyroid Epithelial Cells/metabolism
- Thyroid Neoplasms/genetics
- Thyroid Neoplasms/metabolism
- Thyroid Neoplasms/pathology
- Unfolded Protein Response
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Affiliation(s)
- Yea Eun Kang
- Department of Endocrinology and Metabolism, College of Medicine, Chungnam National University, Daejeon, South Korea
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Jin Man Kim
- Department of Pathology, College of Medicine, Chungnam National University, Daejeon, South Korea
| | - Mi Ae Lim
- Department of Otolaryngology-Head and Neck Surgery, College of Medicine, Chungnam National University, Daejeon, South Korea
| | - Seong Eun Lee
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Shinae Yi
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Jung Tae Kim
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, Republic of Korea
- Department of Medical Science, College of Medicine, Chungnam National University, Daejeon, South Korea
| | - Chan Oh
- Department of Medical Science, College of Medicine, Chungnam National University, Daejeon, South Korea
| | - Lihua Liu
- Department of Medical Science, College of Medicine, Chungnam National University, Daejeon, South Korea
| | - Yanli Jin
- Department of Medical Science, College of Medicine, Chungnam National University, Daejeon, South Korea
| | - Seung-Nam Jung
- Department of Otolaryngology-Head and Neck Surgery, College of Medicine, Chungnam National University, Daejeon, South Korea
| | - Ho-Ryun Won
- Department of Otolaryngology-Head and Neck Surgery, College of Medicine, Chungnam National University, Daejeon, South Korea
| | - Jae Won Chang
- Department of Otolaryngology-Head and Neck Surgery, College of Medicine, Chungnam National University, Daejeon, South Korea
| | - Jeong Ho Lee
- Graduate School of Medical Science and Engineering; Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
- Biomedical Science and Engineering Interdisciplinary Program, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Hyun Jung Kim
- Graduate School of Medical Science and Engineering; Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Hyun Yong Koh
- Graduate School of Medical Science and Engineering; Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Sangmi Jun
- Drug & Disease Target Group, Korea Basic Science Institute, Cheongju, South Korea
- Convergent Research Center for Emerging Virus Infection, Korea Research Institute of Chemical Technology, Daejeon, South Korea
| | - Sun Wook Cho
- Department of Endocrinology and Metabolism, College of Medicine, Seoul National University, Seoul, South Korea
| | - Minho Shong
- Department of Endocrinology and Metabolism, College of Medicine, Chungnam National University, Daejeon, South Korea
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Bon Seok Koo
- Department of Otolaryngology-Head and Neck Surgery, College of Medicine, Chungnam National University, Daejeon, South Korea
- Department of Medical Science, College of Medicine, Chungnam National University, Daejeon, South Korea
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190
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Sheen SS, Kim HJ, Singh D, Hwang SC, Park KJ, Ahn SV, Lee E, Park B, Jung JH, Park RW, Kim JH, Park HS, Park JH. Airflow limitation as a risk factor for vascular stiffness. Int J Tuberc Lung Dis 2021; 24:577-584. [PMID: 32552994 DOI: 10.5588/ijtld.19.0457] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND: Cardiovascular disease is one of the main causes of mortality in patients with chronic obstructive pulmonary disease (COPD), and atherosclerosis is a cause of cardiac comorbidities in COPD. However, it is not clear whether airflow limitation is associated with atherosclerosis irrespective of smoking.OBJECTIVE: To investigate whether airflow limitation is independently associated with vascular stiffness.METHODS: We enrolled 18 893 participants (male 70.5%; mean age 47.5 ± 9.8 years; never smokers 44.2%) who underwent spirometry and brachial-ankle pulse wave velocity (baPWV) as part of a standard health examination at Ajou University Hospital, Suwon, South Korea, from January 2010 to December 2015.We defined vascular peripheral atherosclerosis as baPWV ≥ 1400 cm/s and airflow limitation as pre-bronchodilator ratio of forced expiratory volume in 1 sec (FEV1) to forced vital capacity (FVC) <70%.RESULTS: Mean baPWV was higher in subjects with airflow limitation (1477.6 ± 331.7 cm/sec, n = 638) than in those without airflow limitation (1344.1 ± 231.8 cm/sec, n = 18255, P < 0.001). In multivariate logistic regression analysis, the following were independent predictors associated with peripheral atherosclerosis (P < 0.05): age, male sex, fasting serum glucose, mean blood pressure, serum leukocyte count, serum low density lipoprotein level and FEV1.CONCLUSION: Airflow limitation was an independent predictor of vascular stiffness irrespective of smoking history, which suggests that airflow limitation is linked with atherosclerosis.
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Affiliation(s)
- S S Sheen
- Department of Pulmonary and Critical Care Medicine, Ajou University School of Medicine, Suwon, South Korea
| | - H J Kim
- Department of Pulmonary and Critical Care Medicine, Ajou University School of Medicine, Suwon, South Korea
| | - D Singh
- Division of Infection, Immunity and Respiratory Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, The University of Manchester and University Hospital of South Manchester NHS Foundation Trust, Manchester, UK
| | - S C Hwang
- Department of Pulmonary and Critical Care Medicine, Ajou University School of Medicine, Suwon, South Korea
| | - K J Park
- Department of Pulmonary and Critical Care Medicine, Ajou University School of Medicine, Suwon, South Korea
| | - S V Ahn
- Department of Health Convergence, Ewha Woman's University, Seoul
| | - E Lee
- Department of Biomedical Informatics
| | - B Park
- Department of Biomedical Informatics
| | - J H Jung
- Department of Biomedical Informatics
| | - R W Park
- Department of Biomedical Informatics
| | - J H Kim
- Department of Gastroenterology
| | - H-S Park
- Allergy and Clinical Immunology, Ajou University School of Medicine, Suwon, South Korea
| | - J H Park
- Department of Pulmonary and Critical Care Medicine, Ajou University School of Medicine, Suwon, South Korea
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191
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Abstract
Foam cells are one of the major cellular components of atherosclerotic plaques, within which the trace of periodontal pathogens has also been identified in recent studies. In line with these findings, the correlation between periodontitis and atherosclerotic cardiovascular incidences has been repetitively supported by evidence from a number of experimental studies. However, the direct role of periodontal pathogens in altered cellular signaling underlying such cardiovascular events has not been clearly defined. To determine the role of periodontal pathogens in the pathogenesis of atherosclerosis, especially in the evolution of macrophages into foam cells, we monitored the pattern of lipid accumulation within macrophages in the presence of periodontal pathogens, followed by characterization of these lipids and investigation of major molecules involved in lipid homeostasis. The cells were stained with the lipophilic fluorescent dye BODIPY 493/503 and Oil Red O to characterize the lipid profile. The amounts of Oil Red O-positive droplets, representing neutral lipids, as well as fluorescent lipid aggregates were prominently increased in periodontal pathogen-infected macrophages. Subsequent analysis allowed us to locate the accumulated lipids in the endoplasmic reticulum. In addition, the levels of cholesteryl ester in periodontal pathogen-infected macrophages were increased, implying disrupted lipid homeostasis. Further investigations to delineate the key messengers and regulatory factors involved in the altered lipid homeostasis have revealed alterations in cholesterol efflux-related enzymes, such as ABCG1 and CYP46A1, as contributors to foam cell formation, and increased Ca2+ signaling and reactive oxygen species (ROS) production as key events underlying disrupted lipid homeostasis. Consistently, a treatment of periodontal pathogen-infected macrophages with ROS inhibitors and nifedipine attenuated the accumulation of lipid droplets, further confirming periodontal pathogen-induced alterations in Ca2+ and ROS signaling and the subsequent dysregulation of lipid homeostasis as key regulatory events underlying the evolution of macrophages into foam cells.
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Affiliation(s)
- J H Rho
- Department of Oral Pathology and BK21 FOUR Project, School of Dentistry, Pusan National University, Yangsan, Republic of Korea
- Department of Periodontology, School of Dentistry, Pusan National University, Pusan National University Dental Hospital, Yangsan, Republic of Korea
| | - H J Kim
- Department of Oral Pathology and BK21 FOUR Project, School of Dentistry, Pusan National University, Yangsan, Republic of Korea
- Department of Periodontology, School of Dentistry, Pusan National University, Pusan National University Dental Hospital, Yangsan, Republic of Korea
| | - J Y Joo
- Department of Periodontology, School of Dentistry, Pusan National University, Pusan National University Dental Hospital, Yangsan, Republic of Korea
- Periodontal Disease Signaling Network Research Center, Dental & Life Science Institute, Pusan National University, Yangsan, Republic of Korea
| | - J Y Lee
- Department of Periodontology, School of Dentistry, Pusan National University, Pusan National University Dental Hospital, Yangsan, Republic of Korea
- Periodontal Disease Signaling Network Research Center, Dental & Life Science Institute, Pusan National University, Yangsan, Republic of Korea
| | - J H Lee
- Department of Oral Pathology and BK21 FOUR Project, School of Dentistry, Pusan National University, Yangsan, Republic of Korea
- Periodontal Disease Signaling Network Research Center, Dental & Life Science Institute, Pusan National University, Yangsan, Republic of Korea
| | - H R Park
- Department of Oral Pathology and BK21 FOUR Project, School of Dentistry, Pusan National University, Yangsan, Republic of Korea
- Periodontal Disease Signaling Network Research Center, Dental & Life Science Institute, Pusan National University, Yangsan, Republic of Korea
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192
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Koo BS, Park KY, Lee HJ, Kim HJ, Ahn HS, Yim SY, Jun JB. Effect of combined pulmonary fibrosis and emphysema on patients with connective tissue diseases and systemic sclerosis: a systematic review and meta-analysis. Arthritis Res Ther 2021; 23:100. [PMID: 33823923 PMCID: PMC8022385 DOI: 10.1186/s13075-021-02494-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 10/12/2020] [Accepted: 03/29/2021] [Indexed: 12/12/2022] Open
Abstract
Background This study aimed to analyze the literature systematically to determine the clinical characteristics and prognosis of patients with connective tissue disease (CTD) with combined pulmonary fibrosis and emphysema (CPFE) compared to those of patients with CTD-interstitial lung disease (CTD-ILD) without emphysema. Methods We searched MEDLINE, EMBASE, Cochrane Library, and KoreaMed for relevant articles published before July 2019. Studies meeting all the following criteria were included: (1) original research studies evaluating the effect of CPFE on CTD, (2) studies that compared patients with CTD-CPFE to those with CTD-ILD without emphysema, and (3) studies providing data on physical capacity, pulmonary function, or death in patients with CTD. Clinical characteristics of patients with CTD-CPFE were compared with those of patients with CTD-ILD without emphysema, and the influence of CPFE on physical capacity, pulmonary function, and death was analyzed. Results Six studies between 2013 and 2019 were included. Two hundred ninety-nine (29.5%) and 715 (70.5%) patients had CTD-CPFE and CTD-ILD without emphysema, respectively. Regarding the type of CTD, 711 (68.3%) patients had systemic sclerosis, 263 (25.3%) rheumatoid arthritis, and 67 (6.4%) other CTDs. Patients with CTD-CPFE had a higher frequency of pulmonary hypertension and pulmonary fibrosis > 20% of the total lung volume, higher ratio of the forced vital capacity to the diffusion capacity of the lung for carbon monoxide (DLCO), lower arterial oxygen pressure at rest, and lower DLCO compared to those in patients with CTD-ILD without emphysema. In addition, more deaths occurred among those with CTD-CPFE (odds ratio, 2.95; 95% confidence interval, 1.75–4.96). Conclusion CTD-CPFE is associated with worse physical and pulmonary function and more deaths compared to those in CTD-ILD without emphysema. These findings indicate the need for increased awareness and close monitoring of patients with CTD-CPFE.
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Affiliation(s)
- Bon San Koo
- Department of Internal Medicine, Inje University Seoul Paik Hospital, Inje University College of Medicine, Seoul, South Korea
| | - Kyu Yong Park
- Department of Physical Medicine and Rehabilitation, Ajou University School of Medicine, Suwon, South Korea
| | - Hyun Jung Lee
- Department of Physical Medicine and Rehabilitation, Jeju National University Hospital, Jeju, South Korea.,Graduate Program of Medicine, Ajou University Graduate School, Suwon, South Korea
| | - Hyun Jung Kim
- Department of Preventive Medicine, College of Medicine, Korea University, Seoul, South Korea
| | - Hyeong Sik Ahn
- Department of Preventive Medicine, College of Medicine, Korea University, Seoul, South Korea
| | - Shin-Young Yim
- Department of Physical Medicine and Rehabilitation, Ajou University School of Medicine, Suwon, South Korea.
| | - Jae-Bum Jun
- Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul, South Korea.
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193
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Kim HJ, Xu Y, Petri A, Vanhoorelbeke K, Crawley JTB, Emsley J. Crystal structure of ADAMTS13 CUB domains reveals their role in global latency. Sci Adv 2021; 7:7/16/eabg4403. [PMID: 33863735 PMCID: PMC8051872 DOI: 10.1126/sciadv.abg4403] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 02/26/2021] [Indexed: 06/12/2023]
Abstract
ADAMTS13 is a plasma metalloprotease that is essential for the regulation of von Willebrand factor (VWF) function, mediator of platelet recruitment to sites of blood vessel damage. ADAMTS13 function is dynamically regulated by structural changes induced by VWF binding that convert it from a latent to active conformation. ADAMTS13 global latency is manifest by the interaction of its C-terminal CUB1-2 domains with its central Spacer domain. We resolved the crystal structure of the ADAMTS13 CUB1-2 domains revealing a previously unreported configuration for the tandem CUB domains. Docking simulations between the CUB1-2 domains with the Spacer domain in combination with enzyme kinetic functional characterization of ADAMTS13 CUB domain mutants enabled the mapping of the CUB1-2 domain site that binds the Spacer domain. Together, these data reveal the molecular basis of the ADAMTS13 Spacer-CUB interaction and the control of ADAMTS13 global latency.
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Affiliation(s)
- H J Kim
- Centre for Biomolecular Sciences, School of Pharmacy, University of Nottingham, Nottingham, UK
| | - Y Xu
- Department of Immunology and Inflammation, Imperial College London, London, UK
| | - A Petri
- Department of Immunology and Inflammation, Imperial College London, London, UK
| | - K Vanhoorelbeke
- Laboratory for Thrombosis Research, KU Leuven Campus Kulak Kortrijk, Kortrijk, Belgium
| | - J T B Crawley
- Department of Immunology and Inflammation, Imperial College London, London, UK.
| | - J Emsley
- Centre for Biomolecular Sciences, School of Pharmacy, University of Nottingham, Nottingham, UK.
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194
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Kim HJ, Herath KHINM, Dinh DTT, Kim HS, Jeon YJ, Kim HJ, Jee Y. Sargassum horneri ethanol extract containing polyphenols attenuates PM-induced oxidative stress via ROS scavenging and transition metal chelation. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104401] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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195
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Clary KL, Reinhart CA, Kim HJ, Smith DC. Improving Recruitment Procedures for School-Based Surveys: Through the Lens of the Illinois Youth Survey. J Sch Health 2021; 91:250-257. [PMID: 33417736 DOI: 10.1111/josh.12995] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 10/16/2019] [Revised: 10/26/2020] [Accepted: 10/27/2020] [Indexed: 06/12/2023]
Abstract
BACKGROUND Epidemiological surveys are designed to collect representative trend data. School-based surveys are important to utilize so systems can effectively create prevention and intervention programs to alter youths' perceptions and behaviors related to substance use. However, there are many barriers when implementing a school-based survey. METHODS This mixed methods study sought to uncover 30 school personnel's challenges when making the decision to implement the Illinois Youth Survey (IYS). Through a descriptive and interpretive approach, participants' thoughts to improve future recruitment procedures and reduce barriers for implementation were analyzed. RESULTS Results found challenges included: (1) time; (2) parent-opt out consent letter; (3) wording of the survey responses; (4) honesty of the students' responses; (5) importance and use of the data. Moreover, the most common suggestions to improve recruitment included: (1) sharing knowledge about trend data; (2) year-round communication with school personnel; (3) targeting school personnel groups; and (4) providing examples of data use. CONCLUSIONS Findings can be used to improve recruitment procedures for others who have similar challenges. If schools, counties, and states have representative data they can more precisely tailor their programming to meet the needs of their population.
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Affiliation(s)
- Kelly Lynn Clary
- Texas State University, School of Social Work, 601 University Drive, Encino Hall Office 157, San Marcos, TX, 78666
| | - Crystal A Reinhart
- University of Illinois at Urbana-Champaign, Center for Prevention Research and Development, School of Social Work, 1010 West Nevada, Urbana, IL, 61802
| | - Hyun Jung Kim
- University of Illinois at Urbana-Champaign, School of Social Work, 1010 West Nevada, Urbana, IL, 61802
| | - Douglas Cary Smith
- University of Illinois at Urbana-Champaign, School of Social Work, 1010 West Nevada, Urbana, IL, 61802
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196
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Koo BS, Jeong HJ, Son CN, Kim SH, Kim HJ, Kim GH, Jun JB. Distribution of serum uric acid levels and prevalence of hyper- and hypouricemia in a Korean general population of 172,970. Korean J Intern Med 2021; 36:S264-S272. [PMID: 33227843 PMCID: PMC8009145 DOI: 10.3904/kjim.2020.116] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 05/06/2020] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND/AIMS We investigated the distribution of serum uric acid (SUA) levels and estimated the prevalence of hyperuricemia and hypouricemia in the Korean population. METHODS This cross-sectional study used data from the Korean Genome and Epidemiology Study and included 172,970 participants (58,981 men and 113,989 women) aged 40 to 79 years. Hypouricemia and hyperuricemia were defined as SUA level ≤ 2.0 mg/dL and > 7 mg/dL, respectively. The prevalence of hyperuricemia and hypouricemia was evaluated by age and sex. RESULTS The mean SUA levels were significantly higher in men than in women (5.71 ± 1.27 mg/dL vs. 4.21 ± 0.96 mg/dL, p < 0.001). The mean SUA levels and prevalence of hyperuricemia increased with age in women but not in men. The overall prevalence of hyperuricemia and that in men and women was 50.82, 133.25, and 8.17 per 1,000 persons, respectively; the overall prevalence of hypouricemia and that in men and women was 4.16, 1.10, and 5.75 per 1,000 persons, respectively. The prevalence of hypouricemia in men was similar across all age groups; however, that in women was the highest in the age group of 40 to 49 years and the lowest in the age group of 50 to 59 years. CONCLUSION The distribution of SUA levels and prevalence of hyperuricemia and hypouricemia differed according to age and sex. Age and sex should be considered in studies on uric acid-related diseases.
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Affiliation(s)
- Bon San Koo
- Department of Internal Medicine, Inje University Seoul Paik Hospital, Seoul,
Korea
| | - Hye-Jin Jeong
- Department of Rheumatology, Keimyung University Dongsan Medical Center, Daegu,
Korea
| | - Chang-Nam Son
- Department of Rheumatology, Keimyung University Dongsan Medical Center, Daegu,
Korea
| | - Sang-Hyon Kim
- Department of Rheumatology, Keimyung University Dongsan Medical Center, Daegu,
Korea
| | - Hyun Jung Kim
- Department of Preventive Medicine, Korea University College of Medicine, Seoul,
Korea
| | - Gheun-Ho Kim
- Department of Internal Medicine, Hanyang University College of Medicine, Seoul,
Korea
| | - Jae-Bum Jun
- Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul,
Korea
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197
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Kang MS, Park JH, Kim HJ. Predictive Modeling for the Growth of Salmonella spp. in Liquid Egg White and Application of Scenario-Based Risk Estimation. Microorganisms 2021; 9:microorganisms9030486. [PMID: 33669000 PMCID: PMC7996612 DOI: 10.3390/microorganisms9030486] [Citation(s) in RCA: 4] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 02/22/2021] [Accepted: 02/22/2021] [Indexed: 12/20/2022] Open
Abstract
The objective of the study was to develop a predictive model of Salmonella spp. growth in pasteurized liquid egg white (LEW) and to estimate the salmonellosis risk using the baseline model and scenario analysis. Samples were inoculated with six strains of Salmonella, and bacterial growth was observed during storage at 10–37 °C. The primary models were developed using the Baranyi model for LEW. For the secondary models, the obtained specific growth rate (μmax) and lag phase duration were fitted to a square root model and Davey model, respectively, as functions of temperature (R2 ≥ 0.98). For μmax, the values were satisfied within an acceptable range (Af, Bf: 0.70–1.15). The probability of infection (Pinf) due to the consumption of LEW was zero in the baseline model. However, scenario analysis suggested possible salmonellosis for the consumption of LEW. Because Salmonella spp. proliferated much faster in LEW than in egg white (EW) during storage at 20 and 30 °C (p < 0.01), greater Pinf may be obtained for LEW when these products are stored at the same conditions. The developed predictive model can be applied to the risk management of Salmonella spp. along the food chain, including during product storage and distribution.
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Affiliation(s)
- Mi Seon Kang
- Korea Food Research Institute, Wanju, Jeollabuk-do 55365, Korea; (M.S.K.); (J.H.P.)
- Department of Food Biotechnology, University of Science and Technology, Daejeon 34113, Korea
| | - Jin Hwa Park
- Korea Food Research Institute, Wanju, Jeollabuk-do 55365, Korea; (M.S.K.); (J.H.P.)
| | - Hyun Jung Kim
- Korea Food Research Institute, Wanju, Jeollabuk-do 55365, Korea; (M.S.K.); (J.H.P.)
- Department of Food Biotechnology, University of Science and Technology, Daejeon 34113, Korea
- Correspondence: ; Tel.: +82-63-219-9271
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198
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Kang J, Kang U, Nam HS, Kim W, Kim HJ, Kim RH, Kim JW, Yoo H. Label-free multimodal microscopy using a single light source and detector for biological imaging. Opt Lett 2021; 46:892-895. [PMID: 33577541 DOI: 10.1364/ol.415938] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 01/19/2021] [Indexed: 06/12/2023]
Abstract
Multimodal nonlinear microscopy has been widely applied in biology and medicine due to its relatively deep penetration into tissue and its label-free manner. However, current multimodal systems require the use of multiple sources and detectors, leading to bulky, complex, and expensive systems. In this Letter, we present a novel method of using a single light source and detector for nonlinear multimodal imaging of biological samples. Using a photonic crystal fiber, a pulse picker, and multimode fibers, our developed system successfully acquired multimodal images of swine coronary arteries, including two-photon excitation fluorescence, second-harmonic generation, coherent anti-Stokes Raman scattering, and backreflection. The developed system could be a valuable tool for various biomedical applications.
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Shin JW, Kang T, Lee JS, Kang MJ, Huh CH, Kim MS, Kim HJ, Ahn HS. Time-Dependent Risk of Acute Myocardial Infarction in Patients With Alopecia Areata in Korea. JAMA Dermatol 2021; 156:763-771. [PMID: 32401269 DOI: 10.1001/jamadermatol.2020.1133] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Importance Alopecia areata (AA) is a common autoimmune disease presenting as nonscarring hair loss. Although AA can be associated with other autoimmune comorbidities or atopic diseases, little is known about the risk of cardiovascular diseases in patients with AA. Objective To investigate the risk of acute myocardial infarction (AMI) and cardiovascular risk profiles (CVRPs) in patients with AA via a large-scale epidemiologic study. Design, Setting, and Participants This was a retrospective cohort study using data from the Korean National Health Insurance claims database, including data from the National Health Screening Program. Patients aged 30 to 89 years who were newly diagnosed with AA between January 1, 2006, and December 31, 2017, and controls without AA matched by age and sex were enrolled. Data were analyzed between July 2018 and August 2019. Exposures Presence of AA. Main Outcomes and Measures The CVRPs and incidence rates of AMI were assessed in participants with and without AA. The stratified Cox regression hazard model was used to estimate the relative hazards over time. Results A total of 228 886 patients with AA, ranging in age from 30 to 89 years (mean [SE] age, 44.37 [0.005] years; 127 564 [55.7%] men) and 4 577 720 matched controls without AA were identified. Patients with AA tended to have slightly better CVRPs than controls in all items except smoking status before and after the diagnosis (participants with normal systolic blood pressure who were nonsmokers: 44.6% vs 42.7% and 57.8% vs 61.6% in patients with AA vs controls before and after the diagnosis, respectively). In the early phase of observation, the cumulative incidence of AMI in patients with AA was lower than that in controls (incidence rate ratio of AMI in patients with AA compared with that in controls, 0.52 [95% CI, 0.42-0.65] between 2-4 years); however, during the later phase of the 12-year follow-up period, it increased exponentially and was greater than in the control group (incidence rate ratio, 2.06 [95% CI, 1.71-2.45] between 8-10 years). Similarly, after adjusting for CVRPs, the risk of developing AMI was lower in patients with AA than in controls at the beginning of the observation period (adjusted hazard ratio (HR), 0.17 [95% CI, 0.12-0.25] between 0-2 years); however, by 8 years postdiagnosis, the risk was higher in those with AA (adjusted HR, 1.37 [95% CI, 1.11-1.70] between 8-10 years), and it increased thereafter (adjusted HR, 4.51 [95% CI, 3.65-5.58] between 10-12 years). Conclusions and Relevance In patients with AA, there was a significantly increased risk of AMI over time during the 12-year follow-up period independent of CVRPs. Close long-term monitoring of cardiovascular health in patients with AA might be appropriate.
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Affiliation(s)
- Jung-Won Shin
- Department of Dermatology, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Taeuk Kang
- Health Insurance Policy Research Institute, National Health Insurance Service, Wonju, Korea
| | - Ji Sung Lee
- Clinical Research Center, Asan Medical Center, Asan Institute for Life Sciences, University of Ulsan College of Medicine, Seoul, Korea
| | - Min Ji Kang
- Department of Preventive Medicine, Korea University College of Medicine, Seoul, Korea
| | - Chang-Hun Huh
- Department of Dermatology, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Min-Su Kim
- Department of Dermatology, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Hyun Jung Kim
- Department of Preventive Medicine, Korea University College of Medicine, Seoul, Korea
| | - Hyeong Sik Ahn
- Department of Preventive Medicine, Korea University College of Medicine, Seoul, Korea
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Kim HJ, Heo K. YYB-101, a Humanized Antihepatocyte Growth Factor Monoclonal Antibody, Inhibits Ovarian Cancer Cell Motility and Proliferation. Anticancer Res 2021; 41:671-678. [PMID: 33517271 DOI: 10.21873/anticanres.14818] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 12/12/2020] [Revised: 12/27/2020] [Accepted: 12/28/2020] [Indexed: 11/10/2022]
Abstract
BACKGROUND/AIM Hepatocyte growth factor (HGF) acts as a key regulator in promoting ovarian cancer metastasis. Previously, we observed that YYB-101, a humanized anti-HGF antibody, effectively inhibits ovarian cancer cell migration, invasion, and progression. Here, we evaluated the signaling mechanisms affected by YYB-101 that are important in ovarian cancer cell progression. MATERIALS AND METHODS Using cell migration, invasion and proliferation assays, we evaluated the effects of YYB-101 on A2780/luc and SKOV3 cells. The effects of YYB-101 on signaling molecules were determined by immunocytochemistry and immunoblot analysis. RESULTS YYB-101 inhibited HGF-induced ovarian cancer cell motility by down-regulating paxillin phosphorylation and actin-cytoskeleton rearrangement. Also, YYB-101 inhibited ovarian cancer cell proliferation by reducing c-MET phosphorylation and activating apoptosis in vitro and in vivo. These effects were significantly enhanced by combining YYB-101 treatment with paclitaxel, a standard chemotherapy drug. CONCLUSION YYB-101 can be examined as a new therapeutic agent for the treatment of patients with ovarian cancer.
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MESH Headings
- Animals
- Antibodies, Monoclonal, Humanized/pharmacology
- Antibodies, Monoclonal, Humanized/therapeutic use
- Antineoplastic Agents, Immunological/pharmacology
- Antineoplastic Agents, Immunological/therapeutic use
- Apoptosis/drug effects
- Carcinoma, Ovarian Epithelial/drug therapy
- Carcinoma, Ovarian Epithelial/metabolism
- Carcinoma, Ovarian Epithelial/pathology
- Cell Line, Tumor
- Cell Movement/drug effects
- Cell Proliferation/drug effects
- Cytoskeleton/drug effects
- Cytoskeleton/metabolism
- Cytoskeleton/pathology
- Female
- Hepatocyte Growth Factor/antagonists & inhibitors
- Hepatocyte Growth Factor/metabolism
- Humans
- Mice, Inbred BALB C
- Mice, Nude
- Neoplasm Invasiveness
- Ovarian Neoplasms/drug therapy
- Ovarian Neoplasms/metabolism
- Ovarian Neoplasms/pathology
- Proto-Oncogene Proteins c-met/metabolism
- Signal Transduction
- Xenograft Model Antitumor Assays
- Mice
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Affiliation(s)
- Hyun Jung Kim
- Biopharmaceutical Chemistry Major, School of Applied Chemistry, Kookmin University, Seoul, Republic of Korea
| | - Kyun Heo
- Biopharmaceutical Chemistry Major, School of Applied Chemistry, Kookmin University, Seoul, Republic of Korea
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