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Nam Y, Kim J, Kim K, Park KA, Kang M, Cho BH, Oh SY, Kee C, Han J, Lee GI, Kang MC, Lee D, Choi Y, Yun HJ, Park H, Kim J, Cho SJ, Chang DK. Deep learning-based optic disc classification is affected by optic-disc tilt. Sci Rep 2024; 14:498. [PMID: 38177229 PMCID: PMC10767025 DOI: 10.1038/s41598-023-50256-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Accepted: 12/18/2023] [Indexed: 01/06/2024] Open
Abstract
We aimed to determine the effect of optic disc tilt on deep learning-based optic disc classification. A total of 2507 fundus photographs were acquired from 2236 eyes of 1809 subjects (mean age of 46 years; 53% men). Among all photographs, 1010 (40.3%) had tilted optic discs. Image annotation was performed to label pathologic changes of the optic disc (normal, glaucomatous optic disc changes, disc swelling, and disc pallor). Deep learning-based classification modeling was implemented to develop optic-disc appearance classification models with the photographs of all subjects and those with and without tilted optic discs. Regardless of deep learning algorithms, the classification models showed better overall performance when developed based on data from subjects with non-tilted discs (AUC, 0.988 ± 0.002, 0.991 ± 0.003, and 0.986 ± 0.003 for VGG16, VGG19, and DenseNet121, respectively) than when developed based on data with tilted discs (AUC, 0.924 ± 0.046, 0.928 ± 0.017, and 0.935 ± 0.008). In classification of each pathologic change, non-tilted disc models had better sensitivity and specificity than the tilted disc models. The optic disc appearance classification models developed based all-subject data demonstrated lower accuracy in patients with the appearance of tilted discs than in those with non-tilted discs. Our findings suggested the need to identify and adjust for the effect of optic disc tilt on the optic disc classification algorithm in future development.
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Affiliation(s)
- Youngwoo Nam
- Medical AI Research Center, Institute of Smart Healthcare, Samsung Medical Center, Seoul, Republic of Korea
- Department of Digital Health, SAIHST, Sungkyunkwan University, Seoul, Republic of Korea
| | - Joonhyoung Kim
- Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Kyunga Kim
- Department of Digital Health, SAIHST, Sungkyunkwan University, Seoul, Republic of Korea
- Biomedical Statistics Center, Research Institute for Future Medicine, Samsung Medical Center, Seoul, Republic of Korea
- Department of Data Convergence & Future Medicine, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Kyung-Ah Park
- Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea.
| | - Mira Kang
- Department of Digital Health, SAIHST, Sungkyunkwan University, Seoul, Republic of Korea.
- Health Promotion Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea.
- Digital Innovation Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
| | - Baek Hwan Cho
- Department of Medical Device Management and Research, SAIHST, Sungkyunkwan University, Seoul, Republic of Korea
- Department of Biomedical Informatics, CHA University School of Medicine, CHA University, Seongam, Republic of Korea
| | - Sei Yeul Oh
- Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea
| | - Changwon Kee
- Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea
| | - Jongchul Han
- Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea
- Department of Medical Device Management and Research, SAIHST, Sungkyunkwan University, Seoul, Republic of Korea
| | - Ga-In Lee
- Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea
| | - Min Chae Kang
- Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea
| | - Dongyoung Lee
- Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea
| | - Yeeun Choi
- Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Hee Jee Yun
- Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea
| | - Hansol Park
- Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea
| | - Jiho Kim
- Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea
| | - Soo Jin Cho
- Health Promotion Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Republic of Korea
| | - Dong Kyung Chang
- Department of Digital Health, SAIHST, Sungkyunkwan University, Seoul, Republic of Korea
- Division of Gastroenterology, Department of Internal Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
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Im Y, Park HY, Lee JY, Kim H, Yoo H, Kang M, Cho SJ, Hwang JH, Park YB, Cho J, Kang D, Shin SH. Impact of preserved ratio impaired spirometry on coronary artery calcium score progression: a longitudinal cohort study. ERJ Open Res 2024; 10:00819-2023. [PMID: 38259813 PMCID: PMC10801717 DOI: 10.1183/23120541.00819-2023] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 12/07/2023] [Indexed: 01/24/2024] Open
Abstract
Background Preserved ratio impaired spirometry (PRISm) is associated with increased cardiovascular disease (CVD) risk and mortality. However, a causal relationship between PRISm and CVD remains unclear. We investigated the progression of coronary artery calcium (CAC) scores based on the presence of PRISm and reduced forced vital capacity (FVC). Methods This retrospective cohort study included 11 420 participants aged ≥40 years with forced expiratory volume in 1 s (FEV1)/FVC ≥0.7 who underwent at least two health screening examinations with coronary computed tomography scan between 2003 and 2020, and were without a history of CVD or interstitial lung disease. Participants with PRISm, defined as FEV1/FVC ≥0.7 and FEV1 <80% predicted, were further divided by low FVC (FVC <80% predicted). We estimated the 5-year progression rates of CAC by comparing participants with and without PRISm at baseline using mixed linear models. Results Of the 11 420 participants, 8536 (75%), 811 (7%) and 2073 (18%) had normal spirometry, PRISm with normal FVC and PRISm with low FVC, respectively. During the mean (range) follow-up of 6.0 (0.5-17.2) years, the multivariable adjusted ratio of 5-year CAC progression rates comparing participants with PRISm to those with normal spirometry was 1.08 (95% CI 1.04-1.13). This rate was higher in participants with PRISm with low FVC (1.21 (95% CI 1.12-1.30)) than in those with normal FVC. Conclusion In this longitudinal cohort study of subjects without a history of CVD, PRISm was significantly associated with CAC progression, which was more evident in the group with PRISm and low FVC.
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Affiliation(s)
- Yunjoo Im
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
- These authors contributed equally to this work as first authors
| | - Hye Yun Park
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
- These authors contributed equally to this work as first authors
| | - Jin-Young Lee
- Center for Health Promotion, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
- These authors contributed equally to this work as first authors
| | - Hyunsoo Kim
- Center for Clinical Epidemiology, Samsung Medical Center, Seoul, South Korea
| | - Hongseok Yoo
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Mira Kang
- Center for Health Promotion, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Soo Jin Cho
- Center for Health Promotion, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Jung Hye Hwang
- Center for Health Promotion, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Yong Bum Park
- Department of Pulmonary and Critical Care Medicine, Hallym University Kangdong Sacred Heart Hospital, Seoul, South Korea
| | - Juhee Cho
- Center for Clinical Epidemiology, Samsung Medical Center, Seoul, South Korea
- Department of Clinical Research Design and Evaluation, SAIHST, Sungkyunkwan University, Seoul, South Korea
- Department of Epidemiology and Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA
| | - Danbee Kang
- Center for Clinical Epidemiology, Samsung Medical Center, Seoul, South Korea
- Department of Clinical Research Design and Evaluation, SAIHST, Sungkyunkwan University, Seoul, South Korea
- These authors contributed equally to this work as senior authors
| | - Sun Hye Shin
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
- These authors contributed equally to this work as senior authors
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Kim JY, Cho SJ, Kim J, Chung TW, Park SJ, Park KM, Kim JS, On YK. Exercise capacity and risk of incident atrial fibrillation in healthy adults. Korean J Intern Med 2023; 38:872-878. [PMID: 37939668 PMCID: PMC10636553 DOI: 10.3904/kjim.2023.075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 05/22/2023] [Accepted: 08/03/2023] [Indexed: 11/10/2023] Open
Abstract
BACKGROUND/AIMS Atrial fibrillation (AF) is a common arrhythmia and is associated with cardiovascular morbidity and mortality. It is important to identify and control the modifiable risk factors of AF. We aimed to examine the association of exercise capacity with the risk of incident AF within 3 years in healthy subjects. METHODS We evaluated asymptomatic adults who had undergone more than two consecutive health checkups. We included subjects who exhibited normal sinus rhythm on the first health examination and who developed AF on the second or subsequent health examinations. Subjects who underwent cardiopulmonary exercise testing within 3 years before the diagnosis of AF were examined. RESULTS The study population in the analyses included 428 cases (mean age 58.4 ± 7.6 yr, male 95.6%). There were significant differences in maximal systolic blood pressure (SBP; case 169.4 ± 24.2 vs. control 173.9 ± 22.3 mmHg), peak VO2 (29.5 ± 5.4 vs. 30.4 ± 4.8 mL/kg per minute), and maximal metabolic equivalents (METs; 8.5 ± 1.6 vs. 8.7 ± 1.4) between the two groups. In the multivariable logistic models, adjusted odds ratios were 0.99 for maximal SBP (95% confidence interval [CI] 0.98-0.99), 0.97 for peak VO2 (95% CI 0.95-0.99), and 0.91 for maximal METs (95% CI 0.83-0.98). CONCLUSION We demonstrated that poorer exercise capacity was associated with the development of AF in a healthy population. A prospective, systematic trial is necessary to confirm that appropriate exercise training will be beneficial in preventing the development of AF in such patients.
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Affiliation(s)
- Ju Youn Kim
- Division of Cardiology, Department of Medicine, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul,
Korea
| | - Soo Jin Cho
- Center for Health Promotion, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul,
Korea
| | - Juwon Kim
- Division of Cardiology, Department of Medicine, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul,
Korea
| | - Tae-Wan Chung
- Division of Cardiology, Department of Medicine, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul,
Korea
| | - Seung-Jung Park
- Division of Cardiology, Department of Medicine, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul,
Korea
| | - Kyoung-Min Park
- Division of Cardiology, Department of Medicine, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul,
Korea
| | - June Soo Kim
- Division of Cardiology, Department of Medicine, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul,
Korea
| | - Young Keun On
- Division of Cardiology, Department of Medicine, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul,
Korea
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Jeon SK, Lee JM, Cho SJ, Byun YH, Jee JH, Kang M. Development and validation of multivariable quantitative ultrasound for diagnosing hepatic steatosis. Sci Rep 2023; 13:15235. [PMID: 37709827 PMCID: PMC10502048 DOI: 10.1038/s41598-023-42463-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 09/11/2023] [Indexed: 09/16/2023] Open
Abstract
This study developed and validated multivariable quantitative ultrasound (QUS) model for diagnosing hepatic steatosis. Retrospective secondary analysis of prospectively collected QUS data was performed. Participants underwent QUS examinations and magnetic resonance imaging proton density fat fraction (MRI-PDFF; reference standard). A multivariable regression model for estimating hepatic fat fraction was determined using two QUS parameters from one tertiary hospital (development set). Correlation between QUS-derived estimated fat fraction(USFF) and MRI-PDFF and diagnostic performance of USFF for hepatic steatosis (MRI-PDFF ≥ 5%) were assessed, and validated in an independent data set from the other health screening center(validation set). Development set included 173 participants with suspected NAFLD with 126 (72.8%) having hepatic steatosis; and validation set included 452 health screening participants with 237 (52.4%) having hepatic steatosis. USFF was correlated with MRI-PDFF (Pearson r = 0.799 and 0.824; development and validation set). The model demonstrated high diagnostic performance, with areas under the receiver operating characteristic curves of 0.943 and 0.924 for development and validation set, respectively. Using cutoff of 6.0% from development set, USFF showed sensitivity, specificity, positive predictive value, and negative predictive value of 87.8%, 78.6%, 81.9%, and 85.4% for diagnosing hepatic steatosis in validation set. In conclusion, multivariable QUS parameters-derived estimated fat fraction showed high diagnostic performance for detecting hepatic steatosis.
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Affiliation(s)
- Sun Kyung Jeon
- Department of Radiology, Seoul National University Hospital and Seoul National University College of Medicine, 101 Daehangno, Jongno-gu, Seoul, 03080, Korea
| | - Jeong Min Lee
- Department of Radiology, Seoul National University Hospital and Seoul National University College of Medicine, 101 Daehangno, Jongno-gu, Seoul, 03080, Korea.
- Institute of Radiation Medicine, Seoul National University Medical Research Center, Seoul, Korea.
| | - Soo Jin Cho
- Center for Health Promotion, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-Gu, Seoul, 06351, Korea.
| | - Young-Hye Byun
- Center for Health Promotion, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-Gu, Seoul, 06351, Korea
| | - Jae Hwan Jee
- Center for Health Promotion, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-Gu, Seoul, 06351, Korea
| | - Mira Kang
- Center for Health Promotion, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-Gu, Seoul, 06351, Korea
- Department of Digital Health, Samsung Advanced Institute of Health Sciences & Technology (SAIHST), Sungkyunkwan University, Seoul, Korea
- Digital Innovation Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Kayraklioglu N, Gasper C, Cho SJ, Lage J, Rabban JT. Intact Chorionic Vesicle in Very Early Products of Conception Specimens: Clinicopathologic Features of 26 Cases That May Mimic Complete Hydatidiform Mole. Am J Surg Pathol 2023; 47:397-408. [PMID: 36729386 DOI: 10.1097/pas.0000000000002006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Among the morphologic mimics of hydatidiform moles, the chorionic vesicle of early first-trimester pregnancy has received scant attention. The chorionic vesicle is the stage of the implanted blastocyst in which the cytotrophoblastic shell is circumferentially lined by primary and secondary villi and envelops the notochord stage embryo, yolk sac, and amniotic sac, ∼5 to 6 weeks since the last menstrual period. Miscarriage specimens at this early gestational age that contain an intact chorionic vesicle may be misinterpreted as a complete hydatidiform mole because of its large size, cistern-like cavity, and circumferentially radiating villi and trophoblast, particularly so when embryonic tissue is absent. We present the clinicopathologic features of 26 products of conception specimens containing a chorionic vesicle, some of which were submitted for consultation as a possible complete mole. The median gestational age was 6 weeks. The majority were free-floating in the specimen, unattached to endometrium. The median diameter was 6.3 mm and ranged up to 11.3 mm. The embryo was absent in 81% of cases, leaving an empty cavity resembling the cistern of a complete mole in all but 2 cases. Most cases exhibited circumferential villi and variable degrees of proliferating polarized villous trophoblast and extravillous trophoblast but trophoblast atypia was absent. Villous stromal karyorrhexis and blue-gray myxoid extracellular stromal matrix were observed in the majority of cases. A minority exhibited focal abnormal villous morphology concerning for early molar pregnancy, including irregular projections (27%), invaginations (12%), or bulbous shapes (4%) of the villous contours and trophoblast pseudoinclusions (15%). In contrast, orderly hierarchical branching of the secondary villi occurred in 31%. p57 immunoexpression was intact in all 25 cases tested. Short tandem repeat genotype testing confirmed a biparental diploid genotype in both of 2 cases tested. Although uncommonly observed in early first-trimester products of conception specimens, the normal chorionic vesicle merits awareness as a potential diagnostic pitfall. While some morphologic features resemble those of a well-developed complete mole, at this early gestational age such features are not expected in a very early complete mole. Attention to the reported gestational age, if available, and presence of embryonic tissues will mitigate against misclassification as complete mole. As with the workup of any potential gestational trophoblastic disease, partnering the clinical and morphologic evaluation with molecular evaluation (intact p57 immunoexpression and lack of any of the characteristic molar genotypes) offers the most precise classification.
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Affiliation(s)
- Neslihan Kayraklioglu
- Department of Pathology and Laboratory Medicine, University of California San Francisco, San Francisco, CA
| | - Cynthia Gasper
- Department of Pathology and Laboratory Medicine, University of California San Francisco, San Francisco, CA
| | - Soo Jin Cho
- Department of Pathology and Laboratory Medicine, University of California San Francisco, San Francisco, CA
| | - Janice Lage
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Joseph T Rabban
- Department of Pathology and Laboratory Medicine, University of California San Francisco, San Francisco, CA
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Kim MY, Cho SJ, Kim HJ, Kim SM, Lee SC, Paek M, Choe YH. T1 values and extracellular volume fraction in asymptomatic subjects: variations in left ventricular segments and correlation with cardiovascular risk factors. Sci Rep 2022; 12:12544. [PMID: 35869106 PMCID: PMC9307856 DOI: 10.1038/s41598-022-16696-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 07/13/2022] [Indexed: 11/17/2022] Open
Abstract
To evaluate variations in pre-contrast (preT1) and post-contrast (postT1) myocardial T1 values and extracellular volume fraction (ECV) according to left ventricular (LV) segments and to find correlations between them and cardiovascular risk factors. The 233 asymptomatic subjects (210 men, 23 women; aged 54.1 ± 6.0 years) underwent cardiac magnetic resonance imaging with preT1 and postT1 mapping on a 1.5-T scanner. T1 values and ECVs were evaluated according to LV segments, age, sex, and estimated glomerular filtration rate (eGFR). Based on the presence of hypertension (HTN) and diabetes mellitus (DM), subjects were subdivided into the control, HTN, DM, and HTN and DM (HTN-DM) groups. T1 values and ECV showed significant differences between septal and lateral segments at the mid-ventricular and basal levels (p ≤ 0.003). In subgroup analysis, the HTN-DM group showed a significantly higher ECV (0.260 ± 0.023) than the control (0.240 ± 0.021, p = 0.011) and HTN (0.241 ± 0.024, p = 0.041) groups. Overall postT1 and ECV of the LV had significant correlation with eGFR (r = 0.19, p = 0.038 for postT1; r = − 0.23, p = 0.011 for ECV). Septal segments show higher preT1 and ECV but lower postT1 than lateral segments at the mid-ventricular and basal levels. ECV is significantly affected by HTN, DM, and eGFR, even in asymptomatic subjects.
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Kang H, Cho SJ, Kong GD, Yoon HJ. Li-Ion Intercalation, Rectification, and Solid Electrolyte Interphase in Molecular Tunnel Junctions. Nano Lett 2022; 22:4956-4962. [PMID: 35666178 DOI: 10.1021/acs.nanolett.2c01669] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
This paper describes Li-ion intercalation into a pyrenyl-terminated self-assembled monolayer (SAM) on gold, inspired by the graphite anode in a Li-ion battery, and its effect on tunneling performance in a molecular junction incorporating the SAM. As the concentration of the Li-ion precursor ([LiPF6]) increased from 0 to 10-2 M, the rectification ratio increased to ∼102. Further experiments revealed that the intercalation-induced changes in the orientation of PYR group and in the HOMO energy level account for the enhanced rectification. Treatment with high concentrations of LiPF6 (from 10-2 to 100 M) yielded a considerable solid electrolyte interphase (SEI), mainly composed of LiF, on the surface of the SAM, resulting in the disappearance of rectification. This was attributed to renormalization of the HOMO level back to that of the intact SAM, caused by the SEI layer. Our work demonstrates the interplay among Li-ion intercalation, SEI, and tunneling in the molecular junction, benefiting the research of molecular electronics as well as SAM-based batteries.
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Affiliation(s)
- Hungu Kang
- Department of Chemistry, Korea University, Seoul, 02841, Korea
| | - Soo Jin Cho
- Department of Chemistry, Korea University, Seoul, 02841, Korea
| | - Gyu Don Kong
- Department of Chemistry, Korea University, Seoul, 02841, Korea
| | - Hyo Jae Yoon
- Department of Chemistry, Korea University, Seoul, 02841, Korea
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Park D, Cho SJ, Kim K, Woo H, Kim JE, Lee JY, Koh J, Lee J, Choi JS, Chang DK, Choi YH, Chung JI, Cha WC, Jeong OS, Jekal SY, Kang M. Prediction Algorithms for Blood Pressure Based on Pulse Wave Velocity Using Health Checkup Data in Healthy Korean Men: Algorithm Development and Validation. JMIR Med Inform 2021; 9:e29212. [PMID: 34889753 PMCID: PMC8701706 DOI: 10.2196/29212] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 08/06/2021] [Accepted: 09/24/2021] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Pulse transit time and pulse wave velocity (PWV) are related to blood pressure (BP), and there were continuous attempts to use these to predict BP through wearable devices. However, previous studies were conducted on a small scale and could not confirm the relative importance of each variable in predicting BP. OBJECTIVE This study aims to predict systolic blood pressure and diastolic blood pressure based on PWV and to evaluate the relative importance of each clinical variable used in BP prediction models. METHODS This study was conducted on 1362 healthy men older than 18 years who visited the Samsung Medical Center. The systolic blood pressure and diastolic blood pressure were estimated using the multiple linear regression method. Models were divided into two groups based on age: younger than 60 years and 60 years or older; 200 seeds were repeated in consideration of partition bias. Mean of error, absolute error, and root mean square error were used as performance metrics. RESULTS The model divided into two age groups (younger than 60 years and 60 years and older) performed better than the model without division. The performance difference between the model using only three variables (PWV, BMI, age) and the model using 17 variables was not significant. Our final model using PWV, BMI, and age met the criteria presented by the American Association for the Advancement of Medical Instrumentation. The prediction errors were within the range of about 9 to 12 mmHg that can occur with a gold standard mercury sphygmomanometer. CONCLUSIONS Dividing age based on the age of 60 years showed better BP prediction performance, and it could show good performance even if only PWV, BMI, and age variables were included. Our final model with the minimal number of variables (PWB, BMI, age) would be efficient and feasible for predicting BP.
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Affiliation(s)
- Dohyun Park
- Department of Digital Health, Samsung Advanced Institute of Health Sciences and Technology, Sungkyunkwan University, Seoul, Republic of Korea
| | - Soo Jin Cho
- Center for Health Promotion, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Kyunga Kim
- Department of Digital Health, Samsung Advanced Institute of Health Sciences and Technology, Sungkyunkwan University, Seoul, Republic of Korea.,Statistics and Data Center, Research Institute for Future Medicine, Samsung Medical Center, Seoul, Republic of Korea
| | - Hyunki Woo
- Data Science Team, Evidnet Inc, Gyeonggi-do, Republic of Korea
| | - Jee Eun Kim
- Center for Health Promotion, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Jin-Young Lee
- Center for Health Promotion, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Janghyun Koh
- Center for Health Promotion, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - JeanHyoung Lee
- Digital Innovation Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Jong Soo Choi
- Digital Innovation Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Dong Kyung Chang
- Department of Digital Health, Samsung Advanced Institute of Health Sciences and Technology, Sungkyunkwan University, Seoul, Republic of Korea.,Division of Gastroenterology, Department of Internal Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Yoon-Ho Choi
- Center for Health Promotion, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Ji In Chung
- Center for Health Promotion, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Won Chul Cha
- Department of Digital Health, Samsung Advanced Institute of Health Sciences and Technology, Sungkyunkwan University, Seoul, Republic of Korea.,Digital Innovation Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.,Department of Emergency Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Ok Soon Jeong
- Digital Innovation Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Se Yong Jekal
- Digital Innovation Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Mira Kang
- Department of Digital Health, Samsung Advanced Institute of Health Sciences and Technology, Sungkyunkwan University, Seoul, Republic of Korea.,Center for Health Promotion, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.,Digital Innovation Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
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Kim BK, Cho SJ, Kim CS, Sakai F, Dodick DW, Chu MK. Disability and Economic Loss Caused by Headache among Information Technology Workers in Korea. J Clin Neurol 2021; 17:546-557. [PMID: 34595863 PMCID: PMC8490897 DOI: 10.3988/jcn.2021.17.4.546] [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: 03/22/2021] [Revised: 05/03/2021] [Accepted: 05/03/2021] [Indexed: 01/03/2023] Open
Abstract
Background and Purpose Headache disorders are a leading cause of disability globally. However, there is inadequate information available about these disorders and the related economic loss in the workplace in Asian countries. Information technology (IT) jobs are intellectually and cognitively challenging, and hence IT workers are a suitable population for assessing headache disorders and related economic loss. Methods We sent invitation emails to all employees of selected IT companies. A comprehensive Web-based questionnaire regarding headache characteristics, disability, quality of life, and economic loss was completed by 522 participants from 8 companies. Results The participants included 450 (86.2%) who had experienced headache more than once during the previous year. The frequencies of migraine, probable migraine (PM), and tension-type headache (TTH) were 18.2%, 21.1%, and 37.0%, respectively. The Migraine Disability Assessment score was higher for participants with migraine [median and interquartile range, 3.0 (0.0–6.0)] than for those with PM [0.0 (0.0–2.0), p<0.001] and TTH [0.0 (0.0–1.0), p<0.001]. The estimated annual economic losses caused by migraine per person associated with absenteeism and presenteeism were USD 197.5±686.1 and USD 837.7±22.04 (mean±standard deviation), respectively. The total annual economic loss per person caused by migraine (USD 1,023.3±1,972.7) was higher than those caused by PM (USD 424.8±1,209.1, p<0.001) and TTH (USD 197.6±636.4, p<0.001). Conclusions Migraine, PM, and TTH were found to be prevalent among IT workers in Korea. Disability and economic loss were significantly greater in participants with migraine than in those with PM or TTH.
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Affiliation(s)
- Byung Kun Kim
- Department of Neurology, Nowon Eulji Medical Center, Eulji University School of Medicine, Seoul, Korea
| | - Soo Jin Cho
- Department of Neurology, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Korea
| | - Chang Soo Kim
- Department of Preventive Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Fumihiko Sakai
- The Saitama International Headache Center, Saitama, Japan
| | | | - Min Kyung Chu
- Department of Neurology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
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10
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Kwon KH, Hong YH, Song MJ, Cho SJ. Acute-Onset Sensory Ataxic Polyradiculopathy With Root Enhancement in Spine MRI. J Clin Neurol 2021; 17:596-598. [PMID: 34595875 PMCID: PMC8490909 DOI: 10.3988/jcn.2021.17.4.596] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 05/06/2021] [Accepted: 05/07/2021] [Indexed: 11/17/2022] Open
Affiliation(s)
- Ki Han Kwon
- Department of Neurology, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea.
| | - Yoo Ha Hong
- Department of Neurology, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - Min Jun Song
- Department of Neurology, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - Soo Jin Cho
- Department of Neurology, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
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11
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Sinn DH, Kang D, Cho SJ, Paik SW, Guallar E, Cho J, Gwak GY. Risk of hepatocellular carcinoma in individuals without traditional risk factors: development and validation of a novel risk score. Int J Epidemiol 2021; 49:1562-1571. [PMID: 32725117 DOI: 10.1093/ije/dyaa089] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/30/2020] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND Although hepatocellular carcinoma (HCC) occurs mostly in patients with chronic hepatitis B virus (HBV) or hepatitis C virus (HCV) infection or heavy alcohol use or cirrhosis, some patients develop HCC without these risk factors. Our objective in this study was to develop and validate a new HCC risk score that could stratify HCC risk in patients who develop HCC without known risk factors. METHODS A new HCC risk score was developed using a nationwide, population-based cohort among individuals without chronic HBV infection, chronic HCV infection, heavy alcohol use or cirrhosis (n = 467 206, derivation cohort). The performance of the HCC risk score was validated using an independent Samsung Medical Center Health Promotion Center cohort (n = 91 357, validation cohort). RESULTS Multivariable Cox regression analysis identified six independent risk factors: age, sex, smoking, diabetes, total cholesterol level and serum alanine aminotransferase level. A 19-point scale for HCC risk score was developed, with 10-year risk of HCC ranging from 0.0% to 6.16% for the lowest and highest risk scores, respectively. The area under the receiver operating characteristics curve values (AUROCs) to predict HCC development were 0.83 [95% confidence interval (CI): 0.77, 0.88)] and 0.92 (95% CI: 0.89, 0.95) at 10 years in the derivation and validation cohorts, respectively. Predicted risk was well correlated with the Kaplan-Meier observed HCC risk. CONCLUSIONS A simple-to-use, novel HCC risk score was developed for predicting HCC development in individuals without alleged risk factors. It can be used to assess the risk of HCC in this population so that decisions about their clinical management, including risk reduction interventions, can be subsequently made.
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Affiliation(s)
- Dong Hyun Sinn
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Danbee Kang
- Department of Clinical Research Design and Evaluation, SAIHST, Sungkyunkwan University, Seoul, South Korea
| | - Soo Jin Cho
- Center for Health Promotion, Samsung Medical Center, Seoul, South Korea
| | - Seung Woon Paik
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Eliseo Guallar
- Center for Clinical Epidemiology, Samsung Medical Center, Sungkyunkwan University, Seoul, South Korea.,Departments of Epidemiology and Medicine and Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Juhee Cho
- Department of Clinical Research Design and Evaluation, SAIHST, Sungkyunkwan University, Seoul, South Korea.,Center for Clinical Epidemiology, Samsung Medical Center, Sungkyunkwan University, Seoul, South Korea.,Departments of Epidemiology and Medicine and Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Geum-Youn Gwak
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
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12
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Chung PW, Kim BS, Park JW, Sohn JH, Lee MJ, Kim BK, Chu MK, Ahn JY, Choi YJ, Song TJ, Bae DW, Kim D, Kim JM, Kim SK, Park KY, Chung JM, Moon HS, Oh K, Chung CS, Cho SJ. Smoking History and Clinical Features of Cluster Headache: Results from the Korean Cluster Headache Registry. J Clin Neurol 2021; 17:229-235. [PMID: 33835743 PMCID: PMC8053542 DOI: 10.3988/jcn.2021.17.2.229] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [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: 07/21/2020] [Revised: 11/13/2020] [Accepted: 11/13/2020] [Indexed: 12/25/2022] Open
Abstract
Background and Purpose Epidemiologic data suggest that cluster headache (CH) is significantly associated with cigarette smoking. The aim of this study was to determine differences in features between patients with a smoking history and those who are never-smokers, using data from a prospective multicenter registry. Methods Data used in this study were obtained from the Korean Cluster Headache Registry that collected data from consecutive patients diagnosed with CH. We compared clinical and demographic features between ever-smokers (current or former smokers) and never-smokers. Results This study enrolled 250 patients who were diagnosed with CH, of which 152 (60.8%) were ever-smokers and 98 (39.2%) were never-smokers. The age at CH onset was significantly lower in the never-smoker group than in the ever-smoker group [27.1±12.9 years vs. 30.6±10.9 years (mean±standard deviation), p=0.024]. Seasonal rhythmicity (58.1% vs. 44.7%, p=0.038) and triptan responsiveness (100% vs. 85.1%, p=0.001) were higher in never-smokers, while other clinical features such as pain severity, duration, attack frequency, and associated autonomic symptoms did not differ significantly between the groups. The male-to-female ratio was markedly higher in ever-smokers (29.4:1) than in never-smokers (1.7:1). Conclusions Most of the clinical features did not differ significantly between patients with a smoking history and never-smokers. However, the age at CH onset, sex ratio, and seasonal rhythmicity were significantly associated with smoking history.
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Affiliation(s)
- Pil Wook Chung
- Department of Neurology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Byung Su Kim
- Department of Neurology, Bundang Jesaeng General Hospital, Daejin Medical Center, Seongnam, Korea
| | - Jeong Wook Park
- Department of Neurology, Uijeongbu St. Mary's Hospital, Uijeongbu, Korea
| | - Jong Hee Sohn
- Department of Neurology, Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, Chuncheon, Korea
| | - Mi Ji Lee
- Department of Neurology, Neuroscience Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Byung Kun Kim
- Department of Neurology, Nowon Eulji Medical Center, Eulji University, Seoul, Korea
| | - Min Kyung Chu
- Department of Neurology, Severance Hospital, Seoul, Korea
| | - Jin Young Ahn
- Department of Neurology, Seoul Medical Center, Seoul, Korea
| | - Yun Ju Choi
- Department of Neurology, Dr. Choi's Neurology Clinic, Jeonju, Korea
| | - Tae Jin Song
- Department of Neurology, Ewha Womans University School of Medicine, Seoul, Korea
| | - Dae Woong Bae
- Department of Neurology, College of Medicine, The Catholic University of Korea, Suwon, Korea
| | - Daeyoung Kim
- Department of Neurology, Chungnam National University College of Medicine, Daejeon, Korea
| | - Jae Moon Kim
- Department of Neurology, Chungnam National University College of Medicine, Daejeon, Korea
| | - Soo Kyoung Kim
- Department of Neurology, Gyeongsang National University College of Medicine, Jinju, Korea
| | - Kwang Yeol Park
- Department of Neurology, Chung-Ang University College of Medicine, Seoul, Korea
| | - Jae Myun Chung
- Department of Neurology, Inje University College of Medicine, Seoul, Korea
| | - Heui Soo Moon
- Department of Neurology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Kyungmi Oh
- Department of Neurology, Korea University College of Medicine, Seoul, Korea
| | - Chin Sang Chung
- Department of Neurology, Neuroscience Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Soo Jin Cho
- Department of Neurology, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Korea.
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13
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Lee HJ, Cho SJ, Kang H, He X, Yoon HJ. Achieving Ultralow, Zero, and Inverted Tunneling Attenuation Coefficients in Molecular Wires with Extended Conjugation. Small 2021; 17:e2005711. [PMID: 33543557 DOI: 10.1002/smll.202005711] [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] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 10/22/2020] [Indexed: 06/12/2023]
Abstract
Molecular tunnel junctions are organic devices miniaturized to the molecular scale. They serve as a versatile toolbox that can systematically examine charge transport behaviors at the atomic level. The electrical conductance of the molecular wire that bridges the two electrodes in a junction is significantly influenced by its chemical structure, and an intrinsically poor conductance is a major barrier for practical applications toward integrating individual molecules into electronic circuitry. Therefore, highly conjugated molecular wires are attractive as active components for the next-generation electronic devices, owing to the narrow highest occupied molecular orbital-lowest occupied molecular orbital gaps provided by their extended π-building blocks. This article aims to highlight the significance of highly conductive molecular wires in molecular electronics, the structures of which are inspired from conductive organic polymers, and presents a body of discussion on molecular wires exhibiting ultralow, zero, or inverted attenuation of tunneling probability at different lengths, along with future directions.
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Affiliation(s)
- Hyun Ju Lee
- Department of Chemistry, Korea University, Seoul, 02841, South Korea
| | - Soo Jin Cho
- Department of Chemistry, Korea University, Seoul, 02841, South Korea
| | - Hungu Kang
- Department of Chemistry, Korea University, Seoul, 02841, South Korea
| | - Xin He
- Department of Chemistry, Korea University, Seoul, 02841, South Korea
| | - Hyo Jae Yoon
- Department of Chemistry, Korea University, Seoul, 02841, South Korea
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14
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Kim KM, Cho SJ, Shin HJ, Yang KI, Kim D, Yun CH, Chu MK. Prevalence, Disability, and Management Patterns of Migraine in Korea: Nationwide Survey Data from 2009 and 2018. J Clin Neurol 2021; 17:77-85. [PMID: 33480202 PMCID: PMC7840323 DOI: 10.3988/jcn.2021.17.1.77] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [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: 05/07/2020] [Revised: 10/10/2020] [Accepted: 10/12/2020] [Indexed: 12/24/2022] Open
Abstract
Background and Purpose Identifying changes in the prevalence, disability, and management patterns of migraine is important for reducing the burden of this disease. However, data on the changes in these variables are scarce. Methods We compared data obtained in the 2009 Korean Headache Survey and the 2018 Korean Sleep-Headache Survey. Results The 1-year migraine prevalence did not differ significantly between 2018 and 2009 [5.2% (114/2,200) vs. 6.0% (91/1,507), p=0.492]. The number of days with missed activity due to headache during the previous 3 months was larger in the 2018 survey than in the 2009 survey [1.1±2.9 vs. 0.3±1.0 days (mean±standard deviation), p=0.013]. The number of days with reduced productivity during the previous 3 months did not differ significantly between the two surveys (0.8±2.8 vs. 1.4±1.4 days, p=0.679). The proportion of subjects with a substantial-to-severe headache impact (Headache Impact Test-6 score ≥56) was marginally larger in the 2018 survey than in the 2009 survey [42.1% (48/114) vs. 29.7% (27/91), p=0.066]. The rate of lifetime medical consultations did not differ between the 2018 and 2009 surveys [34.2% (39/114) vs. 30.8% (28/91), p=0.615]. Conclusions Migraine prevalence was stable over the 9-year period between the surveys, but disability due to missed activity was greater in 2018 than in 2009 in Korea.
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Affiliation(s)
- Kyung Min Kim
- Department of Neurology, Yongin Severance Hospital, Yonsei University College of Medicine, Yongin, Korea
| | - Soo Jin Cho
- Department of Neurology, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Korea
| | - Hye Jung Shin
- Department of Biomedical Systems Informatics, Biostatistics Collaboration Unit, Yonsei University College of Medicine, Seoul, Korea
| | - Kwang Ik Yang
- Department of Neurology, Soonchunhyang University College of Medicine, Cheonan Hospital, Cheonan, Korea
| | - Daeyoung Kim
- Department of Neurology, Chungnam National University Hospital, Daejeon, Korea
| | - Chang Ho Yun
- Department of Neurology, Bundang Clinical Neuroscience Institute, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Min Kyung Chu
- Department of Neurology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
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15
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Lee MK, Lee JH, Kim JH, Kim H, Joo L, Kim M, Cho SJ, Suh CH, Chung SR, Choi YJ, Baek JH. Diagnostic Accuracy of MRI-Based Morphometric Parameters for Detecting Olfactory Nerve Dysfunction. AJNR Am J Neuroradiol 2020; 41:1698-1702. [PMID: 32763901 DOI: 10.3174/ajnr.a6697] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Accepted: 06/09/2020] [Indexed: 12/16/2022]
Abstract
BACKGROUND AND PURPOSE Although olfactory dysfunction is a common cranial nerve disorder, there are no simple objective morphometric criteria to assess olfactory dysfunction. The aim of this study was to evaluate the diagnostic performance of MR imaging morphometric parameters for detecting olfactory dysfunction. MATERIALS AND METHODS This prospective study enrolled patients from those presenting with olfactory symptoms who underwent both an olfactory function test and MR imaging. Controls without olfactory dysfunction were recruited during the preoperative work-up for pituitary adenoma. Two independent neuroradiologists measured the olfactory bulb in 3D and assessed olfactory bulb concavity on MR imaging while blinded to the clinical data. Diagnostic performance was assessed using receiver operating characteristic curve analysis. RESULTS Sixty-four patients and 34 controls were enrolled. The patients were significantly older than the controls (mean age, 57.8 ± 11.9 years versus 47.1 ± 12.1 years; P < .001). Before age adjustment, the olfactory bulb height was the only olfactory bulb parameter showing a significant difference between patients and controls (1.6 ± 0.3 mm versus 2.0 ± 0.3 mm, P < .001). After age adjustment, all parameters and olfactory bulb concavity showed significant intergroup differences, with the olfactory bulb height having the highest area under the curve (0.85). Olfactory bulb height was confirmed to be the only significant parameter showing a difference in the detection of olfactory dysfunction in 22 pairs after matching for age and sex (area under the curve = 0.87, P < .001). Intraclass correlation coefficients revealed moderate-to-excellent degrees of inter- and intrareader agreement. CONCLUSIONS MR imaging morphometric analysis can differentiate patients with olfactory dysfunction, with the olfactory bulb height having the highest diagnostic performance for detecting olfactory dysfunction irrespective of age.
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Affiliation(s)
- M K Lee
- From the Department of Radiology and Research Institute of Radiology (M.K.L., J.H.L., H.K., L.J., M.K., S.J.C., C.H.S., S.R.C., Y.J.C., J.H.B.).,Department of Radiology (M.K.L.), Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - J H Lee
- From the Department of Radiology and Research Institute of Radiology (M.K.L., J.H.L., H.K., L.J., M.K., S.J.C., C.H.S., S.R.C., Y.J.C., J.H.B.)
| | - J H Kim
- Department of Otorhinolaryngology (J.H.K.), University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea
| | - H Kim
- From the Department of Radiology and Research Institute of Radiology (M.K.L., J.H.L., H.K., L.J., M.K., S.J.C., C.H.S., S.R.C., Y.J.C., J.H.B.)
| | - L Joo
- From the Department of Radiology and Research Institute of Radiology (M.K.L., J.H.L., H.K., L.J., M.K., S.J.C., C.H.S., S.R.C., Y.J.C., J.H.B.)
| | - M Kim
- From the Department of Radiology and Research Institute of Radiology (M.K.L., J.H.L., H.K., L.J., M.K., S.J.C., C.H.S., S.R.C., Y.J.C., J.H.B.)
| | - S J Cho
- From the Department of Radiology and Research Institute of Radiology (M.K.L., J.H.L., H.K., L.J., M.K., S.J.C., C.H.S., S.R.C., Y.J.C., J.H.B.)
| | - C H Suh
- From the Department of Radiology and Research Institute of Radiology (M.K.L., J.H.L., H.K., L.J., M.K., S.J.C., C.H.S., S.R.C., Y.J.C., J.H.B.)
| | - S R Chung
- From the Department of Radiology and Research Institute of Radiology (M.K.L., J.H.L., H.K., L.J., M.K., S.J.C., C.H.S., S.R.C., Y.J.C., J.H.B.)
| | - Y J Choi
- From the Department of Radiology and Research Institute of Radiology (M.K.L., J.H.L., H.K., L.J., M.K., S.J.C., C.H.S., S.R.C., Y.J.C., J.H.B.)
| | - J H Baek
- From the Department of Radiology and Research Institute of Radiology (M.K.L., J.H.L., H.K., L.J., M.K., S.J.C., C.H.S., S.R.C., Y.J.C., J.H.B.)
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16
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Sinn DH, Kang D, Chang Y, Ryu S, Cho SJ, Paik SW, Song YB, Pastor-Barriuso R, Guallar E, Cho J, Gwak GY. Non-alcoholic fatty liver disease and the incidence of myocardial infarction: A cohort study. J Gastroenterol Hepatol 2020; 35:833-839. [PMID: 31512278 DOI: 10.1111/jgh.14856] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [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: 02/01/2019] [Revised: 08/19/2019] [Accepted: 09/08/2019] [Indexed: 12/16/2022]
Abstract
BACKGROUND AND AIM Non-alcoholic fatty liver disease (NAFLD) is a multisystem disease associated with an increased risk of cardiovascular disease (CVD), diabetes, and chronic kidney disease. Indeed, CVD is the most common cause of death in NAFLD patients. This study aimed to evaluate the association between NAFLD and the risk of incident myocardial infarction. METHODS This is a retrospective cohort study involving 111 492 adults over 40 years old without history of CVD, liver disease, or cancer at baseline who participated in a regular health screening exam between 2003 and 2013. Fatty liver was diagnosed by ultrasonography. RESULTS During 725 706.9 person-years of follow-up, 183 participants developed myocardial infarction (incidence rate 0.3 cases per 1000 person-years). The age, sex, and year of visit-adjusted hazard ratio (HR) for incident myocardial infarction comparing participants with NAFLD with those without it was 2.14 (95% confidence interval 1.59, 2.89). This association remained significant in fully adjusted models (HR 1.54; 95% confidence interval 1.11, 2.14). Compared with participants without NAFLD, in participants with low NAFLD fibrosis score (NFS) (< -1.455) and with intermediate-to-high NFS (≥ -1.455), the fully adjusted HRs for incident myocardial infarction were 1.70 (1.22, 2.36) and 1.88 (1.24, 2.87), respectively. CONCLUSION In this large cohort study, NAFLD was associated with an increased incidence of myocardial infarction independently of established risk factors. In addition, this association was similar in participants with and without evidence of more advanced NAFLD as indicated by the NFS. NAFLD patients may need to be carefully monitored and managed early to prevent myocardial infarction.
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Affiliation(s)
- Dong Hyun Sinn
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Danbee Kang
- Department of Clinical Research Design and Evaluation, SAIHST, Sungkyunkwan University, Seoul, Korea
| | - Yoosoo Chang
- Center for Total Health Studies, Kangbuk Samsung Hospital, Seoul, Korea
| | - Seungho Ryu
- Center for Total Health Studies, Kangbuk Samsung Hospital, Seoul, Korea
| | - Soo Jin Cho
- Center for Health Promotion, Samsung Medical Center, Seoul, Korea
| | - Seung Woon Paik
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Young Bin Song
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Roberto Pastor-Barriuso
- National Center for Epidemiology, Instituto de Salud Carlos III, Madrid, Spain.,Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | - Eliseo Guallar
- Center for Clinical Epidemiology, Samsung Medical Center, Sungkyunkwan University, Seoul, Korea.,Departments of Epidemiology and Medicine, and Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Juhee Cho
- Department of Clinical Research Design and Evaluation, SAIHST, Sungkyunkwan University, Seoul, Korea.,Center for Clinical Epidemiology, Samsung Medical Center, Sungkyunkwan University, Seoul, Korea.,Departments of Epidemiology and Medicine, and Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Geum-Youn Gwak
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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17
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Cho SJ, Suh CH, Baek JH, Chung SR, Choi YJ, Lee JH. Diagnostic performance of MRI to detect metastatic cervical lymph nodes in patients with thyroid cancer: a systematic review and meta-analysis. Clin Radiol 2020; 75:562.e1-562.e10. [PMID: 32303337 DOI: 10.1016/j.crad.2020.03.025] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 03/11/2020] [Indexed: 02/02/2023]
Abstract
AIM To evaluate the diagnostic performance of magnetic resonance imaging (MRI) in the diagnosis of metastatic cervical lymph nodes. MATERIALS AND METHODS Ovid-MEDLINE and EMBASE databases were searched up until 12 June 2018. Eleven articles were included in the qualitative systematic review and nine of the 11 in the quantitative analysis. Two radiologists independently performed data extraction and methodological quality assessment using the Quality Assessment of Diagnostic Accuracy Studies-2 tool. A qualitative systematic review and quantitative analysis were performed, followed by a meta-regression analysis to determine factors causing heterogeneity. RESULTS The pooled sensitivity and specificity in the diagnosis of metastatic cervical lymph nodes were 80% (95% confidence interval [CI]: 68-88%) and 85% (95% CI: 63-95%), respectively. The sensitivity and false-positive rate (correlation coefficient, 0.655) showed a positive correlation due to a threshold effect, which was responsible for heterogeneity across the studies, as indicated by a Q-test (p<0.01) and Higgins I2 statistic (sensitivity, I2=90.11%; specificity, I2=92.49%). In the meta-regression analysis, fat-suppressed imaging, and the analysis method were significant factors influencing the heterogeneity in diagnostic performance. CONCLUSIONS MRI shows moderate diagnostic performance in the diagnosis of metastatic lymph nodes in patients with thyroid cancer in the neck. MRI may be an optional or complementary imaging method to ultrasound or computed tomography (CT) in thyroid cancer patients.
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Affiliation(s)
- S J Cho
- Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, 86 Asanbyeongwon-Gil, Songpa-Gu, Seoul, 05505, Republic of Korea; Department of Radiology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - C H Suh
- Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, 86 Asanbyeongwon-Gil, Songpa-Gu, Seoul, 05505, Republic of Korea
| | - J H Baek
- Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, 86 Asanbyeongwon-Gil, Songpa-Gu, Seoul, 05505, Republic of Korea.
| | - S R Chung
- Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, 86 Asanbyeongwon-Gil, Songpa-Gu, Seoul, 05505, Republic of Korea
| | - Y J Choi
- Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, 86 Asanbyeongwon-Gil, Songpa-Gu, Seoul, 05505, Republic of Korea
| | - J H Lee
- Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, 86 Asanbyeongwon-Gil, Songpa-Gu, Seoul, 05505, Republic of Korea
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Sinn DH, Kang D, Cho SJ, Chang Y, Ryu S, Song YB, Paik SW, Hong YS, Zhao D, Guallar E, Cho J, Gwak GY. Weight Change and Development of Subclinical Carotid Atherosclerosis Among Metabolically Healthy Adults: A Cohort Study. J Clin Endocrinol Metab 2020; 105:5572846. [PMID: 31545359 DOI: 10.1210/clinem/dgz040] [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] [Received: 07/08/2019] [Accepted: 09/20/2019] [Indexed: 11/19/2022]
Abstract
BACKGROUND The benefit of weight loss for reducing cardiovascular disease (CVD) risk in metabolically healthy obese people is unknown. OBJECTIVES We evaluated the association between weight change and incident subclinical carotid atherosclerosis (SCA) in metabolically healthy but overweight or obese subjects. METHODS Cohort study of 3117 metabolically healthy overweight or obese adults who did not have any metabolic syndrome components or insulin resistance at baseline. SCA was assessed using carotid artery ultrasonography. The study outcome was the development of incident SCA among participants free of the disease at baseline. RESULTS During 12 248 person-years of follow-up (median 3.42 years), 747 participants developed SCA. The proportions of participants with no reduction or increased weight, reduction in weight from 0.1% to 4.9%, and reduction in weight ≥ 5% during follow-up were 47.0%, 44.4%, and 8.6%, respectively. The fully-adjusted hazard ratios (HRs) for incident SCA in participants with a reduction in weight of 0.1% to 4.9% and ≥ 5% compared with those with no reduction or increased weight were 0.84 (95% CI, 0.72-0.98) and 0.66 (95% CI, 0.50-0.87), respectively. CONCLUSIONS In a large cohort study of metabolically healthy but overweight or obese adult men and women, weight reduction was associated with a lower incidence of SCA. Our findings suggest that metabolically healthy overweight or obese subjects may benefit from weight reduction in terms of CVD risk.
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Affiliation(s)
- Dong Hyun Sinn
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Gangnam-gu, South Korea
| | - Danbee Kang
- Department of Clinical Research Design and Evaluation, SAIHST, Sungkyunkwan University, Seoul, Gangnam-gu, South Korea
- Center for Clinical Epidemiology, Samsung Medical Center, Seoul, Gangnam-gu, South Korea
| | - Soo Jin Cho
- Center for Health Promotion, Samsung Medical Center, Seoul, Gangnam-gu, South Korea
| | - Yoosoo Chang
- Center for Total Health Studies, Kangbuk Samsung Hospital, Seoul, Jongro-gu, South Korea
| | - Seungho Ryu
- Center for Total Health Studies, Kangbuk Samsung Hospital, Seoul, Jongro-gu, South Korea
| | - Young Bin Song
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Gangnam-gu, South Korea
| | - Seung Woon Paik
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Gangnam-gu, South Korea
| | - Yun Soo Hong
- Departments of Epidemiology and Medicine and Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Di Zhao
- Departments of Epidemiology and Medicine and Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Eliseo Guallar
- Center for Clinical Epidemiology, Samsung Medical Center, Seoul, Gangnam-gu, South Korea
- Departments of Epidemiology and Medicine and Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Juhee Cho
- Department of Clinical Research Design and Evaluation, SAIHST, Sungkyunkwan University, Seoul, Gangnam-gu, South Korea
- Center for Clinical Epidemiology, Samsung Medical Center, Seoul, Gangnam-gu, South Korea
- Departments of Epidemiology and Medicine and Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Geum-Youn Gwak
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Gangnam-gu, South Korea
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Suh CH, Lee JH, Lee MK, Cho SJ, Chung SR, Choi YJ, Baek JH. CT and MRI Findings of Glomangiopericytoma in the Head and Neck: Case Series Study and Systematic Review. AJNR Am J Neuroradiol 2020; 41:155-159. [PMID: 31806599 DOI: 10.3174/ajnr.a6336] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [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: 04/26/2019] [Accepted: 10/07/2019] [Indexed: 11/07/2022]
Abstract
Glomangiopericytoma is a rare sinonasal mesenchymal tumor of borderline or low malignant potential. We reviewed the CT and MR imaging findings of head and neck glomangiopericytoma via a retrospective case series study and systematic review. Our study revealed that glomangiopericytoma is a well-defined lobulated avidly enhancing soft-tissue mass with erosive bony remodeling that is most commonly found in the sinonasal cavity. Typically, it is hyperintense on T2-weighted images with vascular signal voids, has a high mean ADC value, and a wash-in and washout pattern on dynamic contrast-enhanced MR imaging. Although the CT findings are nonspecific, typical MR imaging findings, including those on the ADC map and dynamic contrast-enhanced MR imaging, may be helpful for differentiating glomangiopericytomas from other hypervascular tumors in the head and neck.
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Affiliation(s)
- C H Suh
- From the Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea
| | - J H Lee
- From the Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea.
| | - M K Lee
- From the Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea
| | - S J Cho
- From the Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea
| | - S R Chung
- From the Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea
| | - Y J Choi
- From the Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea
| | - J H Baek
- From the Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea
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20
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Kim BS, Kim SK, Kim JM, Moon HS, Park KY, Park JW, Sohn JH, Song TJ, Chu MK, Cha MJ, Kim BK, Cho SJ. Factors Associated with Incidental Neuroimaging Abnormalities in New Primary Headache Patients. J Clin Neurol 2020; 16:222-229. [PMID: 32319238 PMCID: PMC7174120 DOI: 10.3988/jcn.2020.16.2.222] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 10/24/2019] [Accepted: 10/24/2019] [Indexed: 12/12/2022] Open
Abstract
Background and Purpose Deciding whether or not to perform neuroimaging in primary headache is a dilemma for headache physicians. The aim of this study was to identify clinical predictors of incidental neuroimaging abnormalities in new patients with primary headache disorders. Methods This cross-sectional study was based on a prospective multicenter headache registry, and it classified 1,627 consecutive first-visit headache patients according to the third edition (beta version) of the International Classification of Headache Disorders (ICHD-3β). Primary headache patients who underwent neuroimaging were finally enrolled in the analysis. Serious intracranial pathology was defined as serious neuroimaging abnormalities with a high degree of medical urgency. Univariable and multivariable logistic regression analyses were conducted to identify factors associated with incidental neuroimaging abnormalities. Results Neuroimaging abnormalities were present in 170 (18.3%) of 927 eligible patients. In multivariable analysis, age ≥40 years [multivariable-adjusted odds ratio (aOR)=3.37, 95% CI=2.07–6.83], male sex (aOR=1.61, 95% CI=1.12–2.32), and age ≥50 years at headache onset (aOR=1.86, 95% CI=1.24–2.78) were associated with neuroimaging abnormalities. In univariable analyses, age ≥40 years was the only independent variable associated with serious neuroimaging abnormalities (OR=3.37, 95% CI=1.17–9.66), which were found in 34 patients (3.6%). These associations did not change after further adjustment for neuroimaging modality. Conclusions Incidental neuroimaging abnormalities were common and varied in a primary headache diagnosis. A small proportion of the patients incidentally had serious neuroimaging abnormalities, and they were predicted by age ≥40 years. These findings can be used to guide the performing of neuroimaging in primary headache disorders.
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Affiliation(s)
- Byung Su Kim
- Department of Neurology, Bundang Jesaeng General Hospital, Daejin Medical Center, Seongnam, Korea
| | - Soo Kyoung Kim
- Department of Neurology, Gyeongsang National University College of Medicine, Jinju, Korea
| | - Jae Moon Kim
- Department of Neurology, Chungnam National University College of Medicine, Daejeon, Korea
| | - Heui Soo Moon
- Department of Neurology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Kwang Yeol Park
- Department Neurology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - Jeong Wook Park
- Department of Neurology, Uijeongbu St.Mary's Hospital, The Catholic University of Korea College of Medicine, Uijeongbu, Korea
| | - Jong Hee Sohn
- Department of Neurology, Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, Chuncheon, Korea
| | - Tae Jin Song
- Department of Neurology, Ewha Womans University Seoul Hospital, Ewha Womans University College of Medicine, Seoul, Korea
| | - Min Kyung Chu
- Department of Neurology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Myoung Jin Cha
- Department of Neurology, National Police Hospital, Seoul, Korea
| | - Byung Kun Kim
- Department of Neurology, Eulji Hospital, Eulji University, Seoul, Korea
| | - Soo Jin Cho
- Department of Neurology, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Korea.
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21
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Kim MS, Cho SJ, Park SJ, Cho SW, Choi SH, Kim HS, Carriere K, Kim EK, Chang SA, Lee SC, Park SW. Frequency and Clinical Associating Factors of Valvular Heart Disease in Asymptomatic Korean Adults. Sci Rep 2019; 9:16741. [PMID: 31727975 PMCID: PMC6856181 DOI: 10.1038/s41598-019-53277-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [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: 02/04/2019] [Accepted: 10/15/2019] [Indexed: 12/17/2022] Open
Abstract
Limited information is available on the prevalence and clinical determinants of valvular heart disease (VHD) in apparently healthy people. This study sought to assess the frequency and clinical associating factors of aortic stenosis (AS), aortic regurgitation (AR), mitral stenosis (MS), mitral regurgitation (MR), tricuspid regurgitation (TR) in asymptomatic individuals with health check-up examination. We included 23,254 subjects ≥50 years of age who underwent a health check-up examination with transthoracic echocardiography (TTE) between 2012 and 2016 in a single tertiary-care hospital in Korea. Among a total of 23,254 subjects, 15,358 men (66.0%) and 7,896 women (34.0%) underwent TTE. Newly identified (predominantly mild) VHD was detected in 9.4% of subjects. The most common VHD were TR (4.6%), AR (3.0%) and MR (2.4%). Clinically significant (more than moderate) VHD was identified in 176 subjects (0.8%). Age ≥75 years was associated with all clinically significant VHD, and female gender was associated with AR, MS and TR. Korea has been very active in the health check-up examination including echocardiography. We find that VHD in apparently healthy people is not uncommon than believed; all VHD except MS were more frequent in elderly over 75 years of age in a large population-based study.
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Affiliation(s)
- Min Sun Kim
- Division of Cardiology, Department of Medicine, Cardiovascular Imaging Center, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.,Gangnam CHA Medical Center, CHA university School of Medicine, Seoul, Republic of Korea
| | - Soo Jin Cho
- Department of Medicine, Center for Health Promotion, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Sung-Ji Park
- Division of Cardiology, Department of Medicine, Cardiovascular Imaging Center, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
| | - Sung Won Cho
- Department of Medicine, Center for Health Promotion, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Soo-Hee Choi
- Department of Medicine, Center for Health Promotion, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Hye Seung Kim
- Biostatistics Team, Statistics and Data Center, Samsung Medical Center, Seoul, Republic of Korea
| | - Keumhee Carriere
- Biostatistics Team, Statistics and Data Center, Samsung Medical Center, Seoul, Republic of Korea.,Department of Mathematical and Statistical Sciences, University of Alberta, Edmonton, AB, Canada
| | - Eun Kyoung Kim
- Division of Cardiology, Department of Medicine, Cardiovascular Imaging Center, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Sung-A Chang
- Division of Cardiology, Department of Medicine, Cardiovascular Imaging Center, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Sang-Chol Lee
- Division of Cardiology, Department of Medicine, Cardiovascular Imaging Center, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Seung Woo Park
- Division of Cardiology, Department of Medicine, Cardiovascular Imaging Center, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
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22
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Pyo JH, Lee H, Choi SC, Cho SJ, Choi YH, Min YW, Min BH, Lee JH, Yoo H, Kim K, Kim JJ. Lack of Association between Past Helicobacter pylori Infection and Diabetes: A Two-Cohort Study. Nutrients 2019; 11:nu11081874. [PMID: 31409000 PMCID: PMC6723734 DOI: 10.3390/nu11081874] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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: 06/30/2019] [Revised: 08/06/2019] [Accepted: 08/09/2019] [Indexed: 02/07/2023] Open
Abstract
Helicobacter pylori (H. pylori) may be involved in diabetes and other insulin-related processes. This study aimed to investigate the associations between H. pylori infection and the risks of type 2 diabetes, impaired glucose tolerance (IGT), diabetic nephropathy, and poor glycemic control. We retrospectively evaluated 16,091 subjects without diabetes at baseline who underwent repeated health examinations. Subjects were categorized according to whether they were seropositive and seronegative for H. pylori infection. Hazard ratios (HRs) and 95% confidence intervals (CIs) were calculated using Cox proportional hazard models. The serological results were validated using an independent cohort (n = 42,351) based on a histological diagnosis of H. pylori infection. During 108,614 person-years of follow-up, 1338 subjects (8.3%) developed newly diagnosed diabetes, although the cumulative incidence of diabetes was not significantly related to serological H. pylori status. The multivariate Cox proportional-hazards regression models revealed that H. pylori seropositivity was not significantly associated with diabetes (HR: 1.01, 95% CI: 0.88–1.16; p = 0.854), IGT (HR: 0.98, 95% CI: 0.93–1.04; p = 0.566), diabetic nephropathy (HR: 0.99, 95% CI: 0.82–1.21; p = 0.952), or poor glycemic control (HR: 1.05, 95% CI: 0.90–1.22; p = 0.535). Similarly, histopathological findings of H. pylori infection were not significantly associated with diabetes (p = 0.311), diabetic nephropathy (p = 0.888), or poor glycemic control (p = 0.989). The findings from these large Korean cohorts indicate that there does not appear to be a role for past H. pylori infection in the development of diabetes, IGT, diabetic nephropathy, or poor glycemic control.
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Affiliation(s)
- Jeung Hui Pyo
- Center for Health Promotion, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul 06351, Korea
| | - Hyuk Lee
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul 06351, Korea.
| | - Sung Chul Choi
- Center for Health Promotion, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul 06351, Korea
| | - Soo Jin Cho
- Center for Health Promotion, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul 06351, Korea
| | - Yoon-Ho Choi
- Center for Health Promotion, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul 06351, Korea
| | - Yang Won Min
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul 06351, Korea
| | - Byung-Hoon Min
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul 06351, Korea
| | - Jun Haeng Lee
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul 06351, Korea
| | - Heejin Yoo
- Statistics and Data Center, Research Institute for Future Medicine, Samsung Medical Center, 81 Irwon-ro, Gangnam-gu, Seoul 06351, Korea
| | - Kyunga Kim
- Statistics and Data Center, Research Institute for Future Medicine, Samsung Medical Center, 81 Irwon-ro, Gangnam-gu, Seoul 06351, Korea
| | - Jae J Kim
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul 06351, Korea
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23
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Sinn DH, Kang D, Cho SJ, Paik SW, Guallar E, Cho J, Gwak GY. Lean non-alcoholic fatty liver disease and development of diabetes: a cohort study. Eur J Endocrinol 2019; 181:185-192. [PMID: 31176297 DOI: 10.1530/eje-19-0143] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 06/05/2019] [Indexed: 01/29/2023]
Abstract
OBJECTIVE Non-alcoholic fatty liver disease (NAFLD), a condition associated with multiple metabolic abnormalities, is frequently observed in normal weight individuals (lean NAFLD). The metabolic consequences of lean NAFLD, however, are not well characterized. Thus, this study aimed to evaluate the risk of incident diabetes in lean NAFLD. METHODS This is a cohort study of 51,463 adults without diabetes, history of liver disease or cancer at baseline who participated in a regular health screening exam. Fatty liver was diagnosed by ultrasonography. The study outcome was the development of diabetes during follow-up. RESULTS During 236,446.6 person-years of follow-up (median follow-up of 4.0 years), 5370 participants developed diabetes. In fully adjusted models, the hazard ratios (HRs) for incident diabetes comparing lean participants with NAFLD, overweight/obese participants without NAFLD and overweight/obese participants with NAFLD to lean participants without NAFLD, were 1.18 (95% CI: 1.03-1.35), 1.06 (0.98-1.14) and 1.45 (1.34-1.57), respectively. The fully adjusted HR for incident diabetes for lean NAFLD participants with low NAFLD fibrosis score (NFS) (<-1.455) and with intermediate-to-high NFS (≥-1.455) compared to lean participants without NAFLD were 1.32 (1.14-1.53) and 2.73 (2.10-3.55), respectively. CONCLUSIONS In this large cohort study, the presence and severity of NAFLD in normal weight adults was associated with an increased incidence of diabetes independently of established risk factors. Indeed, isolated lean NAFLD was a stronger risk factor for incident diabetes than the presence of overweight/obesity without NAFLD. Subjects with lean NAFLD require careful monitoring for the development of metabolic abnormalities.
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Affiliation(s)
- Dong Hyun Sinn
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine
| | - Danbee Kang
- Department of Clinical Research Design and Evaluation, SAIHST, Sungkyunkwan University
| | - Soo Jin Cho
- Center for Health Promotion, Samsung Medical Center
| | - Seung Woon Paik
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine
| | - Eliseo Guallar
- Center for Clinical Epidemiology, Samsung Medical Center, Sungkyunkwan University, Seoul, South Korea
- Departments of Epidemiology and Medicine and Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Juhee Cho
- Department of Clinical Research Design and Evaluation, SAIHST, Sungkyunkwan University
- Center for Clinical Epidemiology, Samsung Medical Center, Sungkyunkwan University, Seoul, South Korea
- Departments of Epidemiology and Medicine and Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Geum-Youn Gwak
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine
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24
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Yoo R, Yeom J, Kim GH, Park HK, Kang Y, Hwang J, Choi SH, Na HR, Cho SJ, Yu KH, Kim DH, Lee JH, Jeong JH. A Multicenter, Randomized Clinical Trial to Assess the Efficacy of a Therapeutic Intervention Program for Caregivers of People with Dementia. J Clin Neurol 2019; 15:235-242. [PMID: 30938110 PMCID: PMC6444149 DOI: 10.3988/jcn.2019.15.2.235] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 12/11/2018] [Accepted: 12/13/2018] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND AND PURPOSE Caregivers experience tremendous social, financial, physical, and psychological burdens in caring for people with dementia. This study aimed to determine the efficacy of a multicomponent therapeutic intervention program for the caregivers of people with dementia (CGPWD) through a multicenter clinical trial: the intervention program-caregivers of people with dementia study. METHODS The 38 caregivers of dementia patients at 8 sites were randomized into 2 groups: treatment (n=19) and control (n=19). The treatment group received the intervention program for 8-10 weeks, including one group session for dementia education and three individual sessions (on cognitive behavioral therapy, coping with stress, and stress management) and single targeted training for daily activities. The Korean version of the Zarit Burden Interview (ZBI-K) and the Geriatric Depression Scale (GDS) were evaluated at pre- and postintervention as primary efficacy measures. RESULTS The treatment group displayed significant improvements in scores on the ZBI-K and GDS. The ZBI-K score at postintervention was significantly reduced in the treatment group compared to that in the control group [6.2-point decrease vs. 3.7-point increase, t(37)=-2.9, p<0.01]. There was a significant difference in the GDS score between the treatment and control groups [2.2-point decrease vs. 1.3-point increase, t(18)=2.5, p<0.05]. CONCLUSIONS The findings of this study imply that a multicomponent therapeutic intervention program is effective in reducing the burden experienced by and depression among CGPWD. Further research is warranted to investigate the long-term effects of the intervention program for CGPWD.
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Affiliation(s)
- Rayoung Yoo
- Department of Neurology, Ewha Womans University Mokdong Hospital, Ewha Womans University School of Medicine, Seoul, Korea
| | - Jiyoung Yeom
- Department of Neurology, Ewha Womans University Mokdong Hospital, Ewha Womans University School of Medicine, Seoul, Korea
| | - Geon Ha Kim
- Department of Neurology, Ewha Womans University Mokdong Hospital, Ewha Womans University School of Medicine, Seoul, Korea
| | - Hee Kyung Park
- Department of Neurology, Ewha Womans University Mokdong Hospital, Ewha Womans University School of Medicine, Seoul, Korea
| | - Yeonwook Kang
- Department of Psychology, Hallym University, Chuncheon, Korea.,Department of Neurology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Jihye Hwang
- Department of Neurology, Keimyung University College of Medicine, Dongsan Medical Center, Daegu, Korea
| | - Seong Hye Choi
- Department of Neurology, Inha University School of Medicine, Incheon, Korea
| | - Hae Ri Na
- Department of Neurology, Bobath Memorial Hospital, Seongnam, Korea
| | - Soo Jin Cho
- Department of Neurology, Hallym University Dongtan Sacred Heart Hospital, Hwaseong, Korea
| | - Kyung Ho Yu
- Department of Neurology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Do Hoon Kim
- Department of Psychiatry, Hallym University Chuncheon Sacred Heart Hospital, Chuncheon, Korea
| | - Jae Hong Lee
- Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Jee Hyang Jeong
- Department of Neurology, Ewha Womans University Mokdong Hospital, Ewha Womans University School of Medicine, Seoul, Korea.
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25
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Cho SJ, Kong GD, Park S, Park J, Byeon SE, Kim T, Yoon HJ. Molecularly Controlled Stark Effect Induces Significant Rectification in Polycyclic-Aromatic-Hydrocarbon-Terminated n-Alkanethiolates. Nano Lett 2019; 19:545-553. [PMID: 30582703 DOI: 10.1021/acs.nanolett.8b04488] [Citation(s) in RCA: 20] [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] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The variation of the electronic structure of individual molecules as a function of the applied bias matters for the performance of molecular and organic electronic devices. Understanding the structure-electric-field relationship, however, remains a challenge because of the lack of in-operando spectroscopic technique and complexity arising from the ill-defined on-surface structure of molecules and organic-electrode interfaces within devices. We report that a reliable and reproducible molecular diode can be achieved by control of the conjugation length in polycyclic-aromatic-hydrocarbon (PAH)-terminated n-alkanethiolate (denoted as SC11PAH), incorporated into liquid-metal-based large-area tunnel junctions in the form of a self-assembled monolayer. By taking advantage of the structural simplicity and tunability of SC11PAH and the high-yielding feature of the junction technique, we demonstrate that the increase in the conjugation length of the PAH terminal group leads to a significant rectification ratio up to ∼1.7 × 102 at ±740 mV. Further study suggests that the Stark shift of the molecular energy resonance of the PAH breaks the symmetry of the energy topography across the junction and induces rectification in a temperature-independent charge-transport regime.
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Affiliation(s)
- Soo Jin Cho
- Department of Chemistry , Korea University , Seoul 136-701 , Korea
| | - Gyu Don Kong
- Department of Chemistry , Korea University , Seoul 136-701 , Korea
| | - Sohyun Park
- Department of Chemistry , Korea University , Seoul 136-701 , Korea
| | - Jeongwoo Park
- Department of Physics , Hankuk University of Foreign Studies , Yongin 449-791 , Korea
| | - Seo Eun Byeon
- Department of Chemistry , Korea University , Seoul 136-701 , Korea
| | - Taekyeong Kim
- Department of Physics , Hankuk University of Foreign Studies , Yongin 449-791 , Korea
| | - Hyo Jae Yoon
- Department of Chemistry , Korea University , Seoul 136-701 , Korea
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26
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Woo H, Kim K, Cha K, Lee JY, Mun H, Cho SJ, Chung JI, Pyo JH, Lee KC, Kang M. Application of Efficient Data Cleaning Using Text Clustering for Semistructured Medical Reports to Large-Scale Stool Examination Reports: Methodology Study. J Med Internet Res 2019; 21:e10013. [PMID: 30622098 PMCID: PMC6329435 DOI: 10.2196/10013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 09/23/2018] [Accepted: 10/12/2018] [Indexed: 11/13/2022] Open
Abstract
Background Since medical research based on big data has become more common, the community’s interest and effort to analyze a large amount of semistructured or unstructured text data, such as examination reports, have rapidly increased. However, these large-scale text data are often not readily applicable to analysis owing to typographical errors, inconsistencies, or data entry problems. Therefore, an efficient data cleaning process is required to ensure the veracity of such data. Objective In this paper, we proposed an efficient data cleaning process for large-scale medical text data, which employs text clustering methods and value-converting technique, and evaluated its performance with medical examination text data. Methods The proposed data cleaning process consists of text clustering and value-merging. In the text clustering step, we suggested the use of key collision and nearest neighbor methods in a complementary manner. Words (called values) in the same cluster would be expected as a correct value and its wrong representations. In the value-converting step, wrong values for each identified cluster would be converted into their correct value. We applied these data cleaning process to 574,266 stool examination reports produced for parasite analysis at Samsung Medical Center from 1995 to 2015. The performance of the proposed process was examined and compared with data cleaning processes based on a single clustering method. We used OpenRefine 2.7, an open source application that provides various text clustering methods and an efficient user interface for value-converting with common-value suggestion. Results A total of 1,167,104 words in stool examination reports were surveyed. In the data cleaning process, we discovered 30 correct words and 45 patterns of typographical errors and duplicates. We observed high correction rates for words with typographical errors (98.61%) and typographical error patterns (97.78%). The resulting data accuracy was nearly 100% based on the number of total words. Conclusions Our data cleaning process based on the combinatorial use of key collision and nearest neighbor methods provides an efficient cleaning of large-scale text data and hence improves data accuracy.
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Affiliation(s)
- Hyunki Woo
- Department of Digital Health, Samsung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University, Seoul, Republic of Korea
| | - Kyunga Kim
- Department of Digital Health, Samsung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University, Seoul, Republic of Korea.,Statistics and Data Center, Research Institute for Future Medicine, Samsung Medical Center, Seoul, Republic of Korea
| | - KyeongMin Cha
- Department of Digital Health, Samsung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University, Seoul, Republic of Korea
| | - Jin-Young Lee
- Center for Health Promotion, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Hansong Mun
- Center for Health Promotion, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Soo Jin Cho
- Center for Health Promotion, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Ji In Chung
- Center for Health Promotion, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Jeung Hui Pyo
- Center for Health Promotion, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | | | - Mira Kang
- Department of Digital Health, Samsung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University, Seoul, Republic of Korea.,Center for Health Promotion, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
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27
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Kang S, Park S, Kang H, Cho SJ, Song H, Yoon HJ. Tunneling and thermoelectric characteristics of N-heterocyclic carbene-based large-area molecular junctions. Chem Commun (Camb) 2019; 55:8780-8783. [DOI: 10.1039/c9cc01585j] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Tunneling and thermoelectric characteristics of NHC-based large-area junctions were demonstrated for the first time.
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Affiliation(s)
- Seohyun Kang
- Department of Chemistry
- Korea University
- Seoul
- South Korea
| | - Sohyun Park
- Department of Chemistry
- Korea University
- Seoul
- South Korea
| | - Hungu Kang
- Department of Chemistry
- Korea University
- Seoul
- South Korea
| | - Soo Jin Cho
- Department of Chemistry
- Korea University
- Seoul
- South Korea
| | - Hyunsun Song
- Department of Chemistry
- Korea University
- Seoul
- South Korea
| | - Hyo Jae Yoon
- Department of Chemistry
- Korea University
- Seoul
- South Korea
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28
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Song TJ, Lee MJ, Choi YJ, Kim BK, Chung PW, Park JW, Chu MK, Kim BS, Sohn JH, Oh K, Kim D, Kim JM, Kim SK, Park KY, Chung JM, Moon HS, Chung CS, Ahn JY, Cho SJ. Differences in Characteristics and Comorbidity of Cluster Headache According to the Presence of Migraine. J Clin Neurol 2019; 15:334-338. [PMID: 31286705 PMCID: PMC6620459 DOI: 10.3988/jcn.2019.15.3.334] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Revised: 01/25/2019] [Accepted: 01/30/2019] [Indexed: 12/16/2022] Open
Abstract
Background and Purpose Cluster headache (CH) can present with migrainous symptoms such as nausea, photophobia, and phonophobia. In addition, an overlap between CH and migraine has been reported. This study aimed to determine the differences in the characteristics of CH according to the presence of comorbid migraine. Methods This study was performed using data from a prospective multicenter registry study of CH involving 16 headache clinics. CH and migraine were diagnosed by headache specialists at each hospital based on third edition of the International Classification of Headache Disorders (ICHD-3). We interviewed patients with comorbid migraine to obtain detailed information about migraine. The characteristics and psychological comorbidities of CH were compared between patients with and without comorbid migraine. Results Thirty (15.6%) of 192 patients with CH had comorbid migraine, comprising 18 with migraine without aura, 1 with migraine with aura, 3 with chronic migraine, and 8 with probable migraine. Compared to patients with CH without migraine, patients with CH with comorbid migraine had a shorter duration of CH after the first episode [5.4±7.4 vs. 9.0±8.2 years (mean±standard deviation), p=0.008], a lower frequency of episodic CH (50.0% vs. 73.5%, p=0.010), and a higher frequency of chronic CH (13.3% vs. 3.7%, p=0.033). Psychiatric comorbidities did not differ between patients with and without comorbid migraine. The headaches experienced by patients could be distinguished based on their trigeminal autonomic symptoms, pulsating character, severity, and pain location. Conclusions Distinct characteristics of CH remained unchanged in patients with comorbid migraine with the exception of an increased frequency of chronic CH. The most appropriate management of CH requires clinicians to check the history of preceding migraine, particularly in cases of chronic CH.
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Affiliation(s)
- Tae Jin Song
- Department of Neurology, Ewha Womans University College of Medicine, Seoul, Korea
| | - Mi Ji Lee
- Department of Neurology, Neuroscience Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Yun Ju Choi
- Department of Neurology, Presbyterian Medical Center, Jeonju, Korea
| | - Byung Kun Kim
- Department of Neurology, Eulji Hospital, Eulji University, Seoul, Korea
| | - Pil Wook Chung
- Department of Neurology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jung Wook Park
- Department of Neurology, Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Uijeongbu, Korea
| | - Min Kyung Chu
- Department of Neurology, Severance Hospital, Seoul, Korea
| | - Byung Su Kim
- Department of Neurology, Bundang Jesaeng General Hospital, Daejin Medical Center, Seongnam, Korea
| | - Jong Hee Sohn
- Department of Neurology, Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, Chuncheon, Korea
| | - Kyungmi Oh
- Department of Neurology, Korea University College of Medicine, Seoul, Korea
| | - Daeyoung Kim
- Department of Neurology, Chungnam National University College of Medicine, Daejeon, Korea
| | - Jae Moon Kim
- Department of Neurology, Chungnam National University College of Medicine, Daejeon, Korea
| | - Soo Kyoung Kim
- Department of Neurology, Gyeongsang National University College of Medicine, Jinju, Korea
| | - Kwang Yeol Park
- Department of Neurology, Chung-Ang University Hospital, Seoul, Korea
| | - Jae Myun Chung
- Department of Neurology, Inje University College of Medicine, Seoul, Korea
| | - Heui Soo Moon
- Department of Neurology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Chin Sang Chung
- Department of Neurology, Neuroscience Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jin Young Ahn
- Department of Neurology, Seoul Medical Center, Seoul, Korea.
| | - Soo Jin Cho
- Department of Neurology, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Korea.
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29
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Chung PW, Cho SJ, Kim BK, Kim SK, Lee MJ, Choi YJ, Park JW, Kim BS, Oh K, Moon HS, Song TJ, Kang D, Cho J, Chung CS. Development and Validation of the Cluster Headache Screening Questionnaire. J Clin Neurol 2019; 15:90-96. [PMID: 30618222 PMCID: PMC6325359 DOI: 10.3988/jcn.2019.15.1.90] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 08/13/2018] [Revised: 09/17/2018] [Accepted: 09/19/2018] [Indexed: 01/03/2023] Open
Abstract
Background and Purpose Cluster headache (CH) is frequently either not diagnosed or the diagnosis is delayed. We addressed this issue by developing the self-administered Cluster Headache Screening Questionnaire (CHSQ). Methods Experts selected items from the diagnostic criteria of CH and the characteristics of migraine. The questionnaire was administered to first-visit headache patients at nine headache clinics. The finally developed CHSQ included items based on the differences in responses between CH and non-CH patients, and the accuracy and reliability of the scoring model were assessed. Results Forty-two patients with CH, 207 migraineurs, 73 with tension-type headache, and 18 with primary stabbing headache were enrolled. The CHSQ item were scored as follows: 3 points for ipsilateral eye symptoms, agitation, and duration; 2 points for clustering patterns; and 1 point for the male sex, unilateral pain, disability, ipsilateral nasal symptoms, and frequency. The total score of the CHSQ ranged from 0 to 16. The mean score was higher in patients with CH than in non-CH patients (12.9 vs. 3.4, p<0.001). At a cutoff score of >8 points, the CHSQ had a sensitivity, specificity, positive predictive value, and negative predictive value of 95.2%, 96%, 76.9%, and 99.3%, respectively. Conclusions The CHSQ is a reliable screening tool for the rapid identification of CH.
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Affiliation(s)
- Pil Wook Chung
- Department of Neurology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Soo Jin Cho
- Department of Neurology, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Korea.
| | - Byung Kun Kim
- Department of Neurology, Eulji Hospital, Eulji University, Seoul, Korea
| | - Soo Kyoung Kim
- Department of Neurology, Gyeonsang National University College of Medicine, Jinju, Korea
| | - Mi Ji Lee
- Department of Neurology, Neuroscience Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Yun Ju Choi
- Department of Neurology, Presbyterian Medical Center, Jeonju, Korea
| | - Jeong Wook Park
- Department of Neurology, Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Uijeongbu, Korea
| | - Byung Su Kim
- Department of Neurology, Bundang Jesaeng General Hospital, Daejin Medical Center, Seongnam, Korea
| | - Kyungmi Oh
- Department of Neurology, Korea University College of Medicine, Seoul, Korea
| | - Heui Soo Moon
- Department of Neurology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Tae Jin Song
- Department of Neurology, Ewha Womans University College of Medicine, Seoul, Korea
| | - Danbee Kang
- Department of Clinical Research Design and Evaluation, SAIHST, Sungkyunkwan University, Seoul, Korea.,Center for Clinical Epidemiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Juhee Cho
- Department of Clinical Research Design and Evaluation, SAIHST, Sungkyunkwan University, Seoul, Korea.,Center for Clinical Epidemiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Chin Sang Chung
- Department of Neurology, Neuroscience Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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30
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Abstract
Background: There is a well-established relationship between cardiorespiratory fitness (CRF) and arterial stiffness. However, it is unclear whether this relationship differs significantly between hypertensive and non-hypertensive patients.Methods: Adults without a history of ischemic heart disease or stroke and normal exercise test results who underwent health screening were included. Cardiopulmonary function test was performed using the Bruce protocol. Peak oxygen consumption (VO2peak) was measured. Arterial stiffness was evaluated using the brachial-ankle pulse wave velocity (baPWV).Results: Study subjects were 9232 participants (M:F = 71:29%) with a mean age of 53 ± 6 years. Thirty-four percent had hypertension. There was an inverse relationship between the peak oxygen consumption and baPWV (r = - 0.21, p < 0.001) This relationship persisted after adjusting for age, gender, body mass index, smoking, diabetes mellitus, hemoglobin A1c, LDL-cholesterol, mean blood pressure, and hypertension (p < 0.0001). The regression coefficient of VO2peak was significantly more negative among hypertensive subjects than it was in non-hypertensive subjects in the regression coefficient (-9.2 vs. -4.2, p for interaction <0.001). The difference in arterial stiffness between hypertensive and non-hypertensive groups decreased as the CRF increased.Conclusion: Arterial stiffness decreased as CRF increased among participants without overt cardiovascular disease. The effect of hypertension on arterial stiffness also decreased as the CRF increased.
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Affiliation(s)
- Jidong Sung
- Division of Cardiology, Department of Medicine, Sungkyunkwan University School of Medicine, Prevention & Rehabilitation Center, Heart Vascular & Stroke Institute, Samsung Medical Center, Seoul, Republic of Korea
| | - Soo Jin Cho
- Department of Medicine, Center for Health Promotion, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Kyong Pyo Hong
- Division of Cardiology, Department of Medicine, Sungkyunkwan University School of Medicine, Prevention & Rehabilitation Center, Heart Vascular & Stroke Institute, Samsung Medical Center, Seoul, Republic of Korea
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31
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Cha MJ, Kim SM, Kim Y, Kim HS, Cho SJ, Sung J, Choe YH. Unrecognized myocardial infarction detected on cardiac magnetic resonance imaging: Association with coronary artery calcium score and cardiovascular risk prediction scores in asymptomatic Asian cohort. PLoS One 2018; 13:e0204040. [PMID: 30216389 PMCID: PMC6138379 DOI: 10.1371/journal.pone.0204040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 09/01/2018] [Indexed: 11/29/2022] Open
Abstract
Background To investigate the association between unrecognized myocardial infarction (UMI) assessed with cardiac magnetic resonance (CMR) and coronary artery calcium (CAC) and cardiovascular risk prediction scores in asymptomatic Asian subjects. Materials and methods Total 872 asymptomatic subjects without prior cardiovascular event (male:female, 817:55; age, 53.88 ± 5.91) who underwent both CMR and CAC scoring CT were included. UMI were accessed and framingham risk score (FRS) and ASCVD (atherosclerotic cardiovascular disease) risk score by ACC/AHA were calculated. Results Late gadolinium enhancement indicating UMI was noted in 23 of 872 subjects (2.64%), but only three of them showed ECG abnormality (13.04%). Subjects with UMI showed higher CAC scores, FRS, and ASCVD scores than those without UMI (p < .001, p = .011 and p = .024, respectively). The prevalence of UMI differed significantly according to the CAC scores as follows: 1% in CAC = 0 (4/403), 1% in 1 ≤ CAC <100 (2/293), 6.1% in 100 ≤ CAC < 400 (7/114) and 14.5% in CAC ≥ 400 (9/62), respectively (p < .001). Receiver operating characteristics (ROC) analysis by using CAC score demonstrated an area under the curve (AUC) of 0.816 (95% confidence interval (CI), 0.780–0.848; p < .0001) for predicting UMI, which is superior to FRS [AUC, 0.712; 95% CI, 0.671–0.751; p = .009] and ASCVD risk score [AUC, 0.689; 95% CI, 0.648–0.729; p = .036]. Conclusion The prevalence of UMI increases with increasing burden of CAC and FRS. CAC score is a good discriminator for UMI, superior to FRS and ASCVD score, in asymptomatic population.
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Affiliation(s)
- Min Jae Cha
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Gangnam-gu, Seoul, Republic of Korea
| | - Sung Mok Kim
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Gangnam-gu, Seoul, Republic of Korea
- Cardiovascular Imaging Center, Heart Vascular and Stroke Institute, Samsung Medical Center, Gangnam-gu, Seoul, Republic of Korea
- * E-mail:
| | - Yiseul Kim
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Gangnam-gu, Seoul, Republic of Korea
| | - Hyun Su Kim
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Gangnam-gu, Seoul, Republic of Korea
| | - Soo Jin Cho
- Center for Health Promotion, Samsung Medical Center, Gangnam-gu, Seoul, Republic of Korea
| | - Jidong Sung
- Division of Cardiology, Department of Medicine, Sungkyunkwan University School of Medicine, Prevention & Rehabilitation Center, Heart Vascular & Stroke Institute, Samsung Medical Center, Seoul, Republic of Korea
| | - Yeon Hyeon Choe
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Gangnam-gu, Seoul, Republic of Korea
- Cardiovascular Imaging Center, Heart Vascular and Stroke Institute, Samsung Medical Center, Gangnam-gu, Seoul, Republic of Korea
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32
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Chen J, Kim M, Gathiaka S, Cho SJ, Kundu S, Yoon HJ, Thuo MM. Understanding Keesom Interactions in Monolayer-Based Large-Area Tunneling Junctions. J Phys Chem Lett 2018; 9:5078-5085. [PMID: 30126267 DOI: 10.1021/acs.jpclett.8b01731] [Citation(s) in RCA: 12] [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: 06/08/2023]
Abstract
Charge transport across self-assembled monolayers (SAMs) has been widely studied. Discrepancies of charge tunneling data that arise from various studies, however, call for efforts to develop new statistical analytical approaches to understand charge tunneling across SAMs. Structure-property studies on charge tunneling across SAM-based junctions have largely been through comparison of average tunneling rates and associated variance. These early moments (especially the average) are dominated by barrier width-a static property of the junction. In this work, we show that analysis of higher statistical moments (skewness and kurtosis) reveals the dynamic nature of the tunnel junction. Intramolecular Keesom (dipole-dipole) interactions dynamically fluctuate with bias as dictated by stereoelectronic limitations. Analyzing variance in the distribution of tunneling data instead of the first statistical moment (average), for a series of n-alkanethiols containing internal amide and aromatic terminal groups, we observe that the direction of dipole moments affects molecule-electrode coupling. An applied bias induces changes in the tunneling probability, affecting the distribution of tunneling paths in large-area molecular junctions.
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Affiliation(s)
- Jiahao Chen
- Department of Materials Science and Engineering , Iowa State University , Ames , Iowa 50010 , United States
| | - Miso Kim
- Department of Chemistry , Korea University , Seongbuk-gu , Seoul 02841 , South Korea
| | - Symon Gathiaka
- School of Pharmacy and Pharmaceutical Science , University of California , La Jolla , California 92093-0657 , United States
| | - Soo Jin Cho
- Department of Chemistry , Korea University , Seongbuk-gu , Seoul 02841 , South Korea
| | - Souvik Kundu
- Department of Electrical and Computer Engineering , Iowa State University , Ames , Iowa 50010 , United States
| | - Hyo Jae Yoon
- Department of Chemistry , Korea University , Seongbuk-gu , Seoul 02841 , South Korea
| | - Martin M Thuo
- Department of Materials Science and Engineering , Iowa State University , Ames , Iowa 50010 , United States
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Min YW, Kim Y, Gwak GY, Gu S, Kang D, Cho SJ, Guallar E, Cho J, Sinn DH. Non-alcoholic fatty liver disease and the development of reflux esophagitis: A cohort study. J Gastroenterol Hepatol 2018; 33:1053-1058. [PMID: 29131401 DOI: 10.1111/jgh.14042] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [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: 07/24/2017] [Revised: 10/25/2017] [Accepted: 11/01/2017] [Indexed: 12/14/2022]
Abstract
BACKGROUND AND AIM Non-alcoholic fatty liver disease (NAFLD), a hepatic manifestation of the metabolic syndrome, is associated with gastroesophageal reflux disease in cross-sectional studies, but a prospective association has not been evaluated. The current study aimed to determine whether NAFLD increases the risk of incident reflux esophagitis in a large cohort study. METHODS We conducted a cohort study of 34 063 men and women without reflux esophagitis or other upper gastrointestinal disease at baseline who underwent health checkup examinations between January 2003 and December 2013. Fatty liver was diagnosed by ultrasound based on standard criteria. Reflux esophagitis was defined by the presence of at least grade A mucosal break on esophagogastroduodenoscopy. RESULTS The prevalence of NAFLD at baseline was 33.2%. During 153 520.2 person-years of follow-up, the cumulative incidences of reflux esophagitis for participants without and with NAFLD were 9.6% and 13.8%, respectively (P < 0.001). The age-adjusted and sex-adjusted hazard ratio for the risk of reflux esophagitis development in participants with NAFLD compared with those without NAFLD was 1.15 (95% confidence interval 1.07-1.23; P < 0.001). However, this association disappeared after adjusting for body mass index and other metabolic factors (hazard ratio 1.01, 95% confidence interval 0.94-1.09; P = 0.79). Similarly, in multivariable-adjusted models, there was no significant association between NAFLD severity and the risk of developing reflux esophagitis. CONCLUSIONS Non-alcoholic fatty liver disease is not independently associated with the risk of the development of reflux esophagitis, but rather, reflux esophagitis is primarily the consequence of increased body mass index commonly associated with NAFLD.
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Affiliation(s)
- Yang Won Min
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Youngha Kim
- Center for Clinical Epidemiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Geum-Youn Gwak
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Seonhye Gu
- Center for Clinical Epidemiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Danbee Kang
- Center for Clinical Epidemiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.,Department of Clinical Research Design and Evaluation, Samsung Advanced Institute for Health Science and Technology, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Soo Jin Cho
- Center for Health Promotion, Samsung Medical Center, Seoul, Korea
| | - Eliseo Guallar
- Center for Clinical Epidemiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.,Departments of Epidemiology and Medicine and Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Juhee Cho
- Center for Clinical Epidemiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.,Department of Clinical Research Design and Evaluation, Samsung Advanced Institute for Health Science and Technology, Sungkyunkwan University School of Medicine, Seoul, Korea.,Departments of Epidemiology and Medicine and Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Dong Hyun Sinn
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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34
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Jang HR, Kang D, Sinn DH, Gu S, Cho SJ, Lee JE, Huh W, Paik SW, Ryu S, Chang Y, Shafi T, Lazo M, Guallar E, Cho J, Gwak GY. Nonalcoholic fatty liver disease accelerates kidney function decline in patients with chronic kidney disease: a cohort study. Sci Rep 2018; 8:4718. [PMID: 29549269 PMCID: PMC5856790 DOI: 10.1038/s41598-018-23014-0] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [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: 10/27/2017] [Accepted: 03/05/2018] [Indexed: 02/06/2023] Open
Abstract
This study aimed to investigate the association of nonalcoholic fatty liver disease (NAFLD) and its severity with the decline in kidney function in patients with chronic kidney disease (CKD). We conducted a cohort study of 1,525 CKD patients who underwent repeated health check-up examinations from January 2003 through December 2013. NAFLD was diagnosed by ultrasonography and its severity was assessed by the NAFLD fibrosis score. At baseline, the prevalence of NAFLD was 40.9%, and the mean estimated glomerular filtration rate (eGFR) was 59.1 ml/min/1.73 m2. The average follow-up was 6.5 years. The age- and sex-adjusted decline in eGFR was greater in patients with NAFLD (-0.79% per year, 95% CI -1.31%, -0.27%) compared to those without it (0.30%, 95% CI -0.14%, 0.76%; p = 0.002). In multivariable adjusted models, the average difference in annual percent change in decline in eGFR comparing patients with NAFLD to those without NAFLD was -1.06% (-1.73%, -0.38%; p = 0.002). The decline in eGFR associated with NAFLD was greater in patients with higher NAFLD fibrosis score, in those with proteinuria or with low eGFR at baseline ( <45 ml/min/1.73 m2), and in those who were smokers and hypertensive. Therefore, NAFLD is independently associated with CKD progression.
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Affiliation(s)
- Hye Ryoun Jang
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Kangbuk Samsung Hospital, Seoul, South Korea
| | - Danbee Kang
- Department of Clinical Research Design and Evaluation, SAIHST, Sungkyunkwan University, Kangbuk Samsung Hospital, Seoul, South Korea
| | - Dong Hyun Sinn
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Kangbuk Samsung Hospital, Seoul, South Korea
| | - Seonhye Gu
- Center for Clinical Epidemiology, Samsung Medical Center, Sungkyunkwan University, Kangbuk Samsung Hospital, Seoul, South Korea
| | - Soo Jin Cho
- Center for Health Promotion, Samsung Medical Center, Kangbuk Samsung Hospital, Seoul, South Korea
| | - Jung Eun Lee
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Kangbuk Samsung Hospital, Seoul, South Korea
| | - Wooseong Huh
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Kangbuk Samsung Hospital, Seoul, South Korea
- Department of Clinical Pharmacology and Therapeutics, Samsung Medical Center, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Kangbuk Samsung Hospital, Seoul, South Korea
| | - Seung Woon Paik
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Kangbuk Samsung Hospital, Seoul, South Korea
| | - Seungho Ryu
- Center for Total Health Studies, Kangbuk Samsung Hospital, Seoul, South Korea
| | - Yoosoo Chang
- Center for Total Health Studies, Kangbuk Samsung Hospital, Seoul, South Korea
| | - Tariq Shafi
- Division of Nephrology, Department of Medicine, Johns Hopkins University School of Medicine, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
- Departments of Epidemiology and Medicine and Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Mariana Lazo
- Departments of Epidemiology and Medicine and Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Eliseo Guallar
- Center for Clinical Epidemiology, Samsung Medical Center, Sungkyunkwan University, Kangbuk Samsung Hospital, Seoul, South Korea
- Departments of Epidemiology and Medicine and Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Juhee Cho
- Department of Clinical Research Design and Evaluation, SAIHST, Sungkyunkwan University, Kangbuk Samsung Hospital, Seoul, South Korea.
- Center for Clinical Epidemiology, Samsung Medical Center, Sungkyunkwan University, Kangbuk Samsung Hospital, Seoul, South Korea.
- Departments of Epidemiology and Medicine and Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA.
| | - Geum-Youn Gwak
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Kangbuk Samsung Hospital, Seoul, South Korea.
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Song TJ, Chu MK, Sohn JH, Ahn HY, Lee SH, Cho SJ. Effect of Vitamin D Deficiency on the Frequency of Headaches in Migraine. J Clin Neurol 2018; 14:366-373. [PMID: 29971976 PMCID: PMC6031995 DOI: 10.3988/jcn.2018.14.3.366] [Citation(s) in RCA: 24] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Revised: 03/19/2018] [Accepted: 03/22/2018] [Indexed: 01/01/2023] Open
Abstract
Background and Purpose The risk of vitamin D deficiency varies with the season. The frequency of vitamin D deficiency in migraine patients and its association with migraine are unclear. Methods We retrospectively evaluated first-visit migraine patients between January 2016 and May 2017, and investigated the demographics, season, migraine subtypes, frequency, severity, and impact of migraine, psychological and sleep variables, climate factors, and vitamin D levels. The nonfasting serum 25-hydroxyvitamin D concentration was measured to determine the vitamin D level, with deficiency of vitamin D defined as a concentration of <20 ng/mL. Results In total, 157 patients with migraine aged 37.0±8.6 years (mean±standard deviation) were analyzed. Their serum level of vitamin D was 15.9±7.4 ng/mL. Vitamin D deficiency was present in 77.1% of the patients, and occurred more frequently in spring and winter than in summer and autumn (89.1%, 85.7%, 72.4%, and 61.7%, respectively; p=0.008). In multivariate Poisson regression analysis, monthly headache was 1.203 times (95% confidence interval=1.046–1.383, p=0.009) more frequent in patients with vitamin D deficiency than in those without deficiency after adjusting for demographics, season, migraine subtype, depression, anxiety, and sleep quality. These associations were consistently noted in subgroup analysis of episodic migraine (odds ratio=1.266, p=0.033) and chronic migraine (odds ratio=1.390, p=0.041). Conclusions Our study found that a larger number of monthly days with headache was related to vitamin D deficiency among migraineurs. Future studies should attempt to confirm the causal relationship between vitamin D deficiency and migraine.
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Affiliation(s)
- Tae Jin Song
- Department of Neurology, College of Medicine, Ewha Womans University, Seoul, Korea
| | - Min Kyung Chu
- Department of Neurology, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - Jong Hee Sohn
- Department of Neurology, Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, Chuncheon, Korea
| | - Hong Yup Ahn
- Department of Statistics, Dongguk University, Seoul, Korea
| | - Sun Hwa Lee
- Department of Neurology, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Korea
| | - Soo Jin Cho
- Department of Neurology, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Korea.
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Oh JH, Cho SJ, Kim WJ, Yang KI, Yun CH, Chu MK. Insufficient Sleep in Tension-Type Headache: A Population Study. J Clin Neurol 2018; 14:566-573. [PMID: 30284768 PMCID: PMC6172505 DOI: 10.3988/jcn.2018.14.4.566] [Citation(s) in RCA: 12] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 07/18/2018] [Accepted: 07/18/2018] [Indexed: 02/06/2023] Open
Abstract
Background and Purpose Sufficient sleep is an essential part of good health and well-being. Tension-type headache (TTH) is the most common type of primary headache and has negative impacts on the quality of life and work performance. We aimed to determinethe relationship between TTH and insufficient sleep in the general population. Methods This study used data from the Korean Headache Sleep Study, which was a population-based survey about headache and sleep among Korean adults. Insufficient sleep was defined when the discrepancy between sleep need and average sleep duration was at least 1 hour. Results Among the 2,695 included subjects, 570 (21.2%) and 727 (27.0%) were classified as having TTH and insufficient sleep, respectively. The prevalence of insufficient sleep was significantly higher among subjects with TTH than among those without headaches (28.8% vs. 20.4%). For subjects with TTH, the scores on a visual analogue scale (4.7±1.8 vs. 4.3±1.9, mean±SD) and the Headache Impact Test-6 (44.9±7.0 vs. 43.6±6.1) were much higher in subjects with insufficient sleep than in those without insufficientsleep. Multivariable analyses revealed that insomnia [odds ratio (OR)=2.1], poor sleep quality (OR=1.7), and short sleep duration (OR=6.9) were significantly associated with insufficient sleep in subjects with TTH. Conclusions Our findings suggest that insufficient sleep is prevalent among subjects with TTH and is linked to an exacerbation of TTH. Therefore, the proper evaluation and management of sleep may lead to the better management of TTH.
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Affiliation(s)
- Jung Hwan Oh
- Department of Neurology, Jeju National University School of Medicine, Jeju, Korea
| | - Soo Jin Cho
- Department of Neurology, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Korea
| | - Won Joo Kim
- Department of Neurology, Gangnam Severance Hospital, Yonsei University, College of Medicine, Seoul, Korea
| | - Kwang Ik Yang
- Sleep Disorders Center, Department of Neurology, Soonchunhyang University College of Medicine, Cheonan Hospital, Cheonan, Korea
| | - Chang Ho Yun
- Department of Neurology, Bundang Clinical Neuroscience Institute, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Min Kyung Chu
- Department of Neurology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
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Kong DY, Kim HJ, Kang TK, Oh SC, Cho SJ, Choi SW, Ryu SY. The Association between Facial Fracture Patterns and Traumatic Head Injury in Injured Motorcycle Riders According to Helmet Use Status. HONG KONG J EMERG ME 2017. [DOI: 10.1177/102490791302000403] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Objective This study was undertaken to identify the association between facial fracture patterns and traumatic head injury in injured motorcycle riders. Methods Retrospective study design. We reviewed the medical records of patients who underwent facial bone computed tomography (CT) and brain CT simultaneously among the injured motorcycle riders between May 2009 and July 2011. Data collected included age, sex, Glasgow Coma Scale (GCS), Revised Trauma Score (RTS), facial fracture patterns, head protective device (helmet) use, alcohol intake, time of accident and seat position. Facial fracture patterns were grouped as upper, mid, and lower face. Traumatic head injury (THI) included skull fracture, brain haemorrhage and diffuse axonal injury. Results Of the 154 patients included, 138 (89.6%) were male, 57 (37%) had facial fracture, 69 (44.8%) wore helmets and 30 (19.5%) had THI. Their mean age was 29.0+15.0 years. After multivariate logistic regression analysis, THI was associated with GCS, seat position of riders and accident time. THI was correlated with the combination of upper and midfacial fractures in helmeted group and isolated upper facial fracture or the combination of upper and midfacial fractures in unhelmeted group. The rest of facial fracture patterns were not correlated with THI regardless of helmet. Conclusions The combination of upper and midfacial fractures are the risk factor of THI regardless of helmet. The patients with the combination of upper and midfacial fractures should be further evaluated for head injury regardless of helmet.
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Sinn DH, Kang D, Jang HR, Gu S, Cho SJ, Paik SW, Ryu S, Chang Y, Lazo M, Guallar E, Cho J, Gwak GY. Development of chronic kidney disease in patients with non-alcoholic fatty liver disease: A cohort study. J Hepatol 2017; 67:1274-1280. [PMID: 28870674 DOI: 10.1016/j.jhep.2017.08.024] [Citation(s) in RCA: 106] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 07/31/2017] [Accepted: 08/16/2017] [Indexed: 12/13/2022]
Abstract
BACKGROUND & AIMS Non-alcoholic fatty liver disease (NAFLD) has been associated with chronic kidney disease (CKD), but cohort studies are limited. We investigated the longitudinal association of NAFLD and its severity with the development of CKD. METHODS We performed a retrospective cohort study of 41,430 adult men and women (average age, 48.9y) without CKD at baseline who underwent repeated health check-up examinations from January 1, 2003, through December 31, 2013. NAFLD status was assessed by ultrasonography, and NAFLD severity was assessed by the NAFLD fibrosis score (NFS). RESULTS The outcome was an incident CKD, defined as an estimated glomerular filtration rate less than 60ml/min/1.73m2. During 200,790 person-years of follow-up (median follow-up of 4.15years), we identified 691 incident CKD cases. The multivariable-adjusted hazard ratio for CKD comparing participants with and without NAFLD was 1.22 (95% confidence interval [CI] 1.04-1.43). The risk of CKD increased progressively with increased NAFLD severity. The multivariable-adjusted hazard ratios for CKD comparing participants with NFS <-1.455 and those with NFS ≥-1.455 to participants without NAFLD were 1.09 (95% CI 0.91-1.32) and 1.58 (95% CI 1.30-1.92), respectively. The association was consistent across clinically relevant subgroups. CONCLUSION In a large cohort of adult men and women without CKD, NAFLD was associated with an increased risk of CKD development. NAFLD may adversely affect renal function and patients may need to be carefully monitored for an increased risk of CKD. LAY SUMMARY The presence of fatty liver is associated with the future decline of renal function. Thus, fatty liver patients need to be monitored regularly for renal function.
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Affiliation(s)
- Dong Hyun Sinn
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Danbee Kang
- Department of Clinical Research Design and Evaluation, SAIHST, Sungkyunkwan University, Seoul, South Korea
| | - Hye Ryoun Jang
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Seonhye Gu
- Center for Clinical Epidemiology, Samsung Medical Center, Sungkyunkwan University, Seoul, South Korea
| | - Soo Jin Cho
- Center for Health Promotion, Samsung Medical Center, Seoul, South Korea
| | - Seung Woon Paik
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Seungho Ryu
- Center for Total Health Studies, Kangbuk Samsung Hospital, Seoul, South Korea
| | - Yoosoo Chang
- Center for Total Health Studies, Kangbuk Samsung Hospital, Seoul, South Korea
| | - Mariana Lazo
- Departments of Epidemiology and Medicine and Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Medical Institutions, Baltimore, USA
| | - Eliseo Guallar
- Center for Clinical Epidemiology, Samsung Medical Center, Sungkyunkwan University, Seoul, South Korea; Departments of Epidemiology and Medicine and Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Medical Institutions, Baltimore, USA
| | - Juhee Cho
- Department of Clinical Research Design and Evaluation, SAIHST, Sungkyunkwan University, Seoul, South Korea; Center for Clinical Epidemiology, Samsung Medical Center, Sungkyunkwan University, Seoul, South Korea; Departments of Epidemiology and Medicine and Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Medical Institutions, Baltimore, USA.
| | - Geum-Youn Gwak
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea.
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Moon HS, Park JW, Lee KS, Chung CS, Kim BK, Kim JM, Sohn JH, Chu MK, Oh K, Cho SJ. Clinical Features of Cluster Headache Patients in Korea. J Korean Med Sci 2017; 32:502-506. [PMID: 28145655 PMCID: PMC5290111 DOI: 10.3346/jkms.2017.32.3.502] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Accepted: 12/03/2016] [Indexed: 01/03/2023] Open
Abstract
Cluster headache (CH) is a rare underdiagnosed primary headache disorder with very severe unilateral pain and autonomic symptoms. Clinical characteristics of Korean patients with CH have not yet been reported. We analyzed the clinical features of CH patients from 11 university hospitals in Korea. Among a total of 200 patients with CH, only 1 patient had chronic CH. The average age of CH patients was 38.1 ± 8.9 years (range 19-60 years) and the average age of onset was 30.7 ± 10.3 years (range 10-57 years). The male-to-female ratio was 7:1 (2.9:1 among teen-onset and 11.7:1 among twenties-onset). Pain was very severe at 9.3 ± 1.0 on the visual analogue scale. The average duration of each attack was 100.6 ± 55.6 minutes and a bout of CH lasted 6.5 ± 4.5 weeks. Autonomic symptoms were present in 93.5% and restlessness or agitation was present in 43.5% of patients. Patients suffered 3.0 ± 3.5 (range 1-25) bouts over 7.3 ± 6.7 (range 1-30) years. Diurnal periodicity and season propensity were present in 68.5% and 44.0% of patients, respectively. There were no sex differences in associated symptoms or diurnal and seasonal periodicity. Korean CH patients had a high male-to-female ratio, relatively short bout duration, and low proportion of chronic CH, unlike CH patients in Western countries.
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Affiliation(s)
- Heui Soo Moon
- Department of Neurology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jeong Wook Park
- Department of Neurology, Uijeongbu St. Mary's Hospital, The Catholic University of Korea College of Medicine, Uijeongbu, Korea
| | - Kwang Soo Lee
- Department of Neurology, Seoul St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Korea
| | - Chin Sang Chung
- Department of Neurology, Seoul Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Byung Kun Kim
- Department of Neurology, Eulji University School of Medicine, Seoul, Korea
| | - Jae Moon Kim
- Department of Neurology, Chungnam National University College of Medicine, Daejeon, Korea
| | - Jong Hee Sohn
- Department of Neurology, Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, Chuncheon, Korea
| | - Min Kyung Chu
- Department of Neurology, Gangnam Sacred Heart Hospital, Hallym University College of Medicine, Anyang, Korea
| | - Kyungmi Oh
- Department of Neurology, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Korea
| | - Soo Jin Cho
- Department of Neurology, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Korea.
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Sinn DH, Kang D, Chang Y, Ryu S, Gu S, Kim H, Seong D, Cho SJ, Yi BK, Park HD, Paik SW, Song YB, Lazo M, Lima JAC, Guallar E, Cho J, Gwak GY. Non-alcoholic fatty liver disease and progression of coronary artery calcium score: a retrospective cohort study. Gut 2017; 66:323-329. [PMID: 27599521 DOI: 10.1136/gutjnl-2016-311854] [Citation(s) in RCA: 110] [Impact Index Per Article: 15.7] [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: 03/14/2016] [Revised: 08/11/2016] [Accepted: 08/16/2016] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND AIM Non-alcoholic fatty liver disease (NAFLD), a hepatic manifestation of the metabolic syndrome, was associated with subclinical atherosclerosis in many cross-sectional studies, but the prospective association between NAFLD and the progression of atherosclerosis has not been evaluated. This study was conducted to evaluate the association between NAFLD and the progression of coronary atherosclerosis. METHODS This retrospective cohort study included 4731 adult men and women with no history of cardiovascular disease (CVD), liver disease or cancer at baseline who participated in a repeated regular health screening examination between 2004 and 2013. Fatty liver was diagnosed by ultrasound based on standard criteria, including parenchymal brightness, liver-to-kidney contrast, deep beam attenuation and bright vessel walls. Progression of coronary artery calcium (CAC) scores was measured using multidetector CT scanners. RESULTS The average duration of follow-up was 3.9 years. During follow-up, the annual rate of CAC progression in participants with and without NAFLD were 22% (95% CI 20% to 23%) and 17% (16% to 18%), respectively (p<0.001). The multivariable ratio of progression rates comparing participants with NAFLD with those without NAFLD was 1.04 (1.02 to 1.05; p<0.001). The association between NAFLD and CAC progression was similar in most subgroups analysed, including in participants with CAC 0 and in those with CAC >0 at baseline. CONCLUSIONS In this large cohort study of adult men and women with no history of CVD, NAFLD was significantly associated with the development of CAC independent of cardiovascular and metabolic risk factors. NAFLD may play a pathophysiological role in atherosclerosis development and may be useful to identify subjects with a higher risk of subclinical disease progression.
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Affiliation(s)
- Dong Hyun Sinn
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University, Seoul, South Korea
| | - Danbee Kang
- Department of Health Science and Technology, SAIHST, Sungkyunkwan University, Seoul, South Korea
| | - Yoosoo Chang
- Center for Cohort Studies, Total Healthcare Screening Center, Kangbuk Samsung Hospital, Sungkyunkwan University, Seoul, South Korea.,Department of Occupational and Environmental Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University, Seoul, South Korea.,Department of Clinical Research Design and Evaluation, SAIHST, Sungkyunkwan University, Seoul, South Korea
| | - Seungho Ryu
- Center for Cohort Studies, Total Healthcare Screening Center, Kangbuk Samsung Hospital, Sungkyunkwan University, Seoul, South Korea.,Department of Occupational and Environmental Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University, Seoul, South Korea.,Department of Clinical Research Design and Evaluation, SAIHST, Sungkyunkwan University, Seoul, South Korea
| | - Seonhye Gu
- Biostatistics and Clinical Epidemiology Center, Samsung Medical Center, Sungkyunkwan University, Seoul, South Korea
| | - Hyunkyoung Kim
- Biostatistics and Clinical Epidemiology Center, Samsung Medical Center, Sungkyunkwan University, Seoul, South Korea
| | - Donghyeong Seong
- Department of Health Science and Technology, SAIHST, Sungkyunkwan University, Seoul, South Korea
| | - Soo Jin Cho
- Center for Health Promotion, Samsung Medical Center, Sungkyunkwan University, Seoul, South Korea
| | - Byoung-Kee Yi
- Department of Health Science and Technology, SAIHST, Sungkyunkwan University, Seoul, South Korea.,Department of Medical Informatics, Samsung Medical Center, Sungkyunkwan University, Seoul, South Korea
| | - Hyung-Doo Park
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University, Seoul, South Korea
| | - Seung Woon Paik
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University, Seoul, South Korea
| | - Young Bin Song
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University, Seoul, South Korea.,Departments of Epidemiology and Medicine and Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Medical Institutions, Baltimore, USA
| | - Mariana Lazo
- Departments of Epidemiology and Medicine and Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Medical Institutions, Baltimore, USA
| | - Joao A C Lima
- Departments of Epidemiology and Medicine and Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Medical Institutions, Baltimore, USA
| | - Eliseo Guallar
- Departments of Epidemiology and Medicine and Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Medical Institutions, Baltimore, USA
| | - Juhee Cho
- Department of Health Science and Technology, SAIHST, Sungkyunkwan University, Seoul, South Korea.,Center for Cohort Studies, Total Healthcare Screening Center, Kangbuk Samsung Hospital, Sungkyunkwan University, Seoul, South Korea.,Department of Clinical Research Design and Evaluation, SAIHST, Sungkyunkwan University, Seoul, South Korea.,Departments of Epidemiology and Medicine and Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Medical Institutions, Baltimore, USA
| | - Geum-Youn Gwak
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University, Seoul, South Korea
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Kim MY, Cho SJ, Choe YH, Kim HJ, Kim SM, Lee SC. Myocardial T1 mapping in asymptomatic subjects: variations according to left ventricular segments and correlation with cardiovascular risk factors. J Cardiovasc Magn Reson 2016. [PMCID: PMC5032098 DOI: 10.1186/1532-429x-18-s1-p119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Koo JH, Yang JS, Cho SJ, Lee BW. Synthesis of zinc oxide nanoparticles via aqueous solution routes. Journal of the Korean Crystal Growth and Crystal Technology 2016. [DOI: 10.6111/jkcgct.2016.26.5.175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Sinn DH, Cho SJ, Gu S, Seong D, Kang D, Kim H, Yi BK, Paik SW, Guallar E, Cho J, Gwak GY. Persistent Nonalcoholic Fatty Liver Disease Increases Risk for Carotid Atherosclerosis. Gastroenterology 2016; 151:481-488.e1. [PMID: 27283259 DOI: 10.1053/j.gastro.2016.06.001] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [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: 07/21/2015] [Revised: 05/26/2016] [Accepted: 06/01/2016] [Indexed: 02/06/2023]
Abstract
BACKGROUND & AIMS Nonalcoholic fatty liver disease (NAFLD) has been associated with subclinical atherosclerosis in cross-sectional studies. We investigated the longitudinal association of NAFLD with the development of subclinical carotid atherosclerosis. METHODS We performed a retrospective cohort study of 8020 adult men (average age, 49.2 y) without carotid atherosclerosis at baseline who underwent repeated health check-up examinations from January 1, 2005, through December 31, 2013. NAFLD status was diagnosed by ultrasonography and classified into 4 groups based on baseline and follow-up findings: none, developed, regressed, or persistent NAFLD. Subclinical carotid atherosclerosis was measured by ultrasound. RESULTS The age-adjusted hazard ratio for subclinical carotid atherosclerosis development comparing participants with persistent NAFLD with those without NAFLD was 1.23 (95% confidence interval [CI], 1.13-1.35; P < .001). The association persisted after adjustment for smoking, alcohol, body mass index, and weight change (hazard ratio, 1.13; 95% CI, 1.03-1.25; P = .014), but disappeared after adjustment for metabolic variables. The hazard ratio, comparing subjects with regression of NAFLD vs those with persistent NAFLD, was 0.82 (95% CI, 0.69-0.96; P = .013). The risk of subclinical carotid atherosclerosis development also was higher among participants with a high NAFLD fibrosis score, fibrosis-4 scores, or levels of γ-glutamyl transferase at baseline. CONCLUSIONS In a large cohort study, persistent NAFLD was associated with an increased risk of subclinical carotid atherosclerosis development. This association was explained by metabolic factors that could be potential mediators of the effect of NAFLD. Markers of liver fibrosis also were associated with subclinical carotid atherosclerosis development. Prospective studies are needed to determine whether treatment of NAFLD can reduce this risk.
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Affiliation(s)
- Dong Hyun Sinn
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Soo Jin Cho
- Center for Health Promotion, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Seonhye Gu
- Center for Clinical Epidemiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Donghyeong Seong
- Department of Health Science and Technology, Samsung Advanced Institute for Health Science and Technology, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Danbee Kang
- Center for Clinical Epidemiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea; Department of Health Science and Technology, Samsung Advanced Institute for Health Science and Technology, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Hyunkyoung Kim
- Department of Otorhinolaryngology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Byoung-Kee Yi
- Department of Health Science and Technology, Samsung Advanced Institute for Health Science and Technology, Sungkyunkwan University School of Medicine, Seoul, Korea; Department of Medical Informatics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Seung Woon Paik
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Eliseo Guallar
- Center for Clinical Epidemiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea; Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland; Department of Clinical Research Design and Evaluation, Samsung Advanced Institute for Health Science and Technology, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Juhee Cho
- Center for Clinical Epidemiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea; Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland; Department of Clinical Research Design and Evaluation, Samsung Advanced Institute for Health Science and Technology, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Geum-Youn Gwak
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
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Nham E, Kim SM, Lee SC, Chang SA, Sung J, Cho SJ, Jang SY, Choe YH. Erratum to: Association of cardiovascular disease risk factors with left ventricular mass, biventricular function, and the presence of silent myocardial infarction on cardiac MRI in an asymptomatic population. Int J Cardiovasc Imaging 2016; 32:1439-1440. [DOI: 10.1007/s10554-016-0927-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Cha MJ, Moon HS, Sohn JH, Kim BS, Song TJ, Kim JM, Park JW, Park KY, Kim SK, Kim BK, Cho SJ. Chronic Daily Headache and Medication Overuse Headache in First-Visit Headache Patients in Korea: A Multicenter Clinic-Based Study. J Clin Neurol 2016; 12:316-22. [PMID: 27449912 PMCID: PMC4960216 DOI: 10.3988/jcn.2016.12.3.316] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [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: 11/06/2015] [Revised: 12/15/2015] [Accepted: 12/17/2015] [Indexed: 01/03/2023] Open
Abstract
Background and Purpose Chronic daily headache (CDH) is defined as a headache disorder in which headaches occur on a daily or near-daily basis (at least 15 days/month) for more than 3 months. Chronic migraine (CM) and medication overuse headache (MOH) are very disabling headaches that remain underdiagnosed. The aim of this study was to establish the frequency of CDH and its various subtypes, and examine the associations with MOH among first-visit headache patients presenting at neurology outpatient clinics in Korea. Methods Eleven neurologists enrolled first-visit patients with complaints of headaches into outpatient clinics for further assessment. Headache disorders were classified according to the International Classification of Headache Disorder (third edition beta version) by each investigator. Results Primary CDH was present in 248 (15.2%) of the 1,627 included patients, comprising CM (143, 8.8%), chronic tension-type headache (CTTH) (98, 6%), and definite new daily persistent headache (NDPH) (7, 0.4%). MOH was associated with headache in 81 patients (5%). The association with MOH was stronger among CM patients (34.5%) than patients with CTTH (13.3%) or NDPH (14.3%) (p=0.001). The frequency of CDH did not differ between secondary and tertiary referral hospitals. Conclusions The frequencies of CDH and MOH diagnoses were 15.2% and 5%, respectively in first-visit headache patients presented at secondary or tertiary referral hospitals in Korea. CM was the most common subtype of CDH and was most frequently associated with MOH.
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Affiliation(s)
- Myoung Jin Cha
- Department of Neurology, National Police Hospital, Seoul, Korea
| | - Heui Soo Moon
- Department of Neurology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jong Hee Sohn
- Department of Neurology, Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, Chuncheon, Korea
| | - Byung Su Kim
- Department of Neurology, Bundang Jesaeng General Hospital, Daejin Medical Center, Seongnam, Korea
| | - Tae Jin Song
- Department of Neurology, Ewha Womans University School of Medicine, Seoul, Korea
| | - Jae Moon Kim
- Department of Neurology, Chungnam National University College of Medicine, Daejeon, Korea
| | - Jeong Wook Park
- Department of Neurology, Uijeongbu St. Mary's Hospital, The Catholic University of Korea College of Medicine, Uijeongbu, Korea
| | - Kwang Yeol Park
- Department of Neurology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - Soo Kyoung Kim
- Department of Neurology, Gyeongsang National University School of Medicine, Jinju, Korea
| | - Byung Kun Kim
- Department of Neurology, Eulji University School of Medicine, Seoul, Korea
| | - Soo Jin Cho
- Department of Neurology, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Korea.
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Kong GD, Kim M, Cho SJ, Yoon HJ. Gradients of Rectification: Tuning Molecular Electronic Devices by the Controlled Use of Different-Sized Diluents in Heterogeneous Self-Assembled Monolayers. Angew Chem Int Ed Engl 2016; 55:10307-11. [DOI: 10.1002/anie.201604748] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 06/24/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Gyu Don Kong
- Department of Chemistry; Korea University; Seoul 136-701 Korea
| | - Miso Kim
- Department of Chemistry; Korea University; Seoul 136-701 Korea
| | - Soo Jin Cho
- Department of Chemistry; Korea University; Seoul 136-701 Korea
| | - Hyo Jae Yoon
- Department of Chemistry; Korea University; Seoul 136-701 Korea
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47
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Kong GD, Kim M, Cho SJ, Yoon HJ. Gradients of Rectification: Tuning Molecular Electronic Devices by the Controlled Use of Different-Sized Diluents in Heterogeneous Self-Assembled Monolayers. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201604748] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Gyu Don Kong
- Department of Chemistry; Korea University; Seoul 136-701 Korea
| | - Miso Kim
- Department of Chemistry; Korea University; Seoul 136-701 Korea
| | - Soo Jin Cho
- Department of Chemistry; Korea University; Seoul 136-701 Korea
| | - Hyo Jae Yoon
- Department of Chemistry; Korea University; Seoul 136-701 Korea
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Jang SY, Kim S, Lee CK, Cho EJ, Cho SJ, Lee SC. Prehypertension and Left Ventricular Diastolic Dysfunction in Middle-Aged Koreans. Korean Circ J 2016; 46:536-41. [PMID: 27482263 PMCID: PMC4965433 DOI: 10.4070/kcj.2016.46.4.536] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 10/13/2015] [Accepted: 11/26/2015] [Indexed: 01/19/2023] Open
Abstract
Background and Objectives Left ventricular diastolic dysfunction is known to be a marker of myocardial damage, in particular myocardial fibrosis resulting from hypertension (HT). However, few studies have shown an association between the grade of diastolic dysfunction and blood pressure classification. We investigated the association between diastolic dysfunction and prehypertension (preHT) in apparently healthy adults who underwent routine health examinations. Subjects and Methods The study sample included 4261 Koreans, 45 to 64 years of age with no previous history of HT, diabetes mellitus, malignancy, proven coronary artery disease, or valvular heart disease based on echocardiography, who underwent routine health examinations including echocardiography. The subjects were classified into three groups based on resting blood pressure: prehypertensive, hypertensive, and normotensive. Results The prevalence of preHT in our study was 42.1%. After adjusting for age, gender, smoking status, alcohol consumption, fasting blood sugar, serum lipid profile, and body mass index, left ventricular diastolic dysfunction grades 1 and 2 were significantly more frequent in subjects with preHT (odds ratio [OR] 1.66 [95% confidence interval {CI} 1.40-1.96] and 1.37 [95% CI 0.95-1.97], respectively). When analyzed according to gender, the increased OR was especially notable in males. Conclusion Left ventricular diastolic dysfunction appears to be significantly associated with preHT in Korean middle-aged males.
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Affiliation(s)
- Shin Yi Jang
- Division of Cardiology, Department of Medicine, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Sujin Kim
- Division of Cardiology, Department of Medicine, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | | | - Eun Jeong Cho
- Division of Cardiology, Department of Internal Medicine, Cardiology Clinic, National Cancer Center, Goyang, Korea
| | - Soo Jin Cho
- Health Promotion Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Sang-Chol Lee
- Division of Cardiology, Department of Medicine, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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49
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Cho SJ, Cox-Ganser JM, Park JH. Observational scores of dampness and mold associated with measurements of microbial agents and moisture in three public schools. Indoor Air 2016; 26:168-78. [PMID: 25650175 PMCID: PMC4526443 DOI: 10.1111/ina.12191] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Accepted: 01/27/2015] [Indexed: 05/06/2023]
Abstract
We examined associations between observational dampness scores and measurements of microbial agents and moisture in three public schools. A dampness score was created for each room from 4-point-scale scores (0-3) of water damage, water stains, visible mold, moldy odor, and wetness for each of 8 room components (ceiling, walls, windows, floor, ventilation, furniture, floor trench, and pipes), when present. We created mixed microbial exposure indices (MMEIs) for each of 121 rooms by summing decile ranks of 8 analytes (total culturable fungi; total, Gram-negative, and Gram-positive culturable bacteria; ergosterol; (1→3)-β-D-glucan; muramic acid; and endotoxin) in floor dust. We found significant (P ≤ 0.01) linear associations between the dampness score and culturable bacteria (total, Gram-positive, and Gram-negative) and the MMEIs. Rooms with dampness scores greater than 0.25 (median) had significantly (P < 0.05) higher levels of most microbial agents, MMEIs, and relative moisture content than those with lower scores (≤0.25). Rooms with reported recent water leaks had significantly (P < 0.05) higher dampness scores than those with historical or no reported water leaks. This study suggests that observational assessment of dampness and mold using a standardized form may be valuable for identifying and documenting water damage and associated microbial contamination.
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Affiliation(s)
- S J Cho
- Division of Respiratory Disease Studies, National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - J M Cox-Ganser
- Division of Respiratory Disease Studies, National Institute for Occupational Safety and Health, Morgantown, WV, USA
| | - J-H Park
- Division of Respiratory Disease Studies, National Institute for Occupational Safety and Health, Morgantown, WV, USA
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50
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Song TJ, Kim YJ, Kim BK, Kim BS, Kim JM, Kim SK, Moon HS, Cha MJ, Park KY, Sohn JH, Chu MK, Cho SJ. Characteristics of Elderly-Onset (≥65 years) Headache Diagnosed Using the International Classification of Headache Disorders, Third Edition Beta Version. J Clin Neurol 2016; 12:419-425. [PMID: 27819415 PMCID: PMC5063867 DOI: 10.3988/jcn.2016.12.4.419] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [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: 12/22/2015] [Revised: 02/04/2016] [Accepted: 02/05/2016] [Indexed: 01/03/2023] Open
Abstract
Background and Purpose New-onset headache in elderly patients is generally suggestive of a high probability of secondary headache, and the subtypes of primary headache diagnoses are still unclear in the elderly. This study investigated the characteristics of headache with an older age at onset (≥65 years) and compared the characteristics between younger and older age groups. Methods We prospectively collected demographic and clinical data of 1,627 patients who first visited 11 tertiary hospitals in Korea due to headache between August 2014 and February 2015. Headache subtype was categorized according to the International Classification of Headache Disorders, Third Edition Beta Version. Results In total, 152 patients (9.3%, 106 women and 46 men) experienced headache that began from 65 years of age [elderly-onset group (EOG)], while the remaining 1,475 patients who first experienced headache before the age of 65 years were classified as the younger-age-at-onset group (YOG). Among the primary headache types, tension-type headache (55.6% vs. 28.8%) and other primary headache disorders (OPH, 31.0% vs. 17.3%) were more common in the EOG than in the YOG, while migraine was less frequent (13.5% vs. 52.2%) (p=0.001) in the EOG. Among OPH, primary stabbing headache (87.2%) was more frequent in the EOG than in the YOG (p=0.032). The pain was significantly less severe (p=0.026) and the frequency of medication overuse headache was higher in EOG than in YOG (23.5% vs. 7.6%, p=0.040). Conclusions Tension-type headache and OPH headaches, primarily stabbing headache, were more common in EOG patients than in YOG patients. The pain intensity, distribution of headache diagnoses, and frequency of medication overuse differed according to the age at headache onset.
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Affiliation(s)
- Tae Jin Song
- Department of Neurology, Ewha Womans University School of Medicine, Seoul, Korea.,Department of Neurology, Yonsei University School of Medicine, Seoul, Korea
| | - Yong Jae Kim
- Department of Neurology, Ewha Womans University School of Medicine, Seoul, Korea
| | - Byung Kun Kim
- Department of Neurology, Eulji University School of Medicine, Seoul, Korea
| | - Byung Su Kim
- Department of Neurology, Bundang Jesaeng General Hospital, Daejin Medical Center, Seongnam, Korea
| | - Jae Moon Kim
- Department of Neurology, Chungnam National University College of Medicine, Daejeon, Korea
| | - Soo Kyoung Kim
- Department of Neurology, Gyeongsang National University Hospital, Jinju, Korea
| | - Heui Soo Moon
- Department of Neurology, Kangbuk Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Myoung Jin Cha
- Department of Neurology, National Police Hospital, Seoul, Korea
| | - Kwang Yeol Park
- Department of Neurology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - Jong Hee Sohn
- Department of Neurology, Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, Chuncheon, Korea
| | - Min Kyung Chu
- Department of Neurology, Sacred Heart Hospital, Hallym University College of Medicine, Anyang, Korea
| | - Soo Jin Cho
- Department of Neurology, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, Korea.
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