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Kim YH, Park MR, Kim SY, Kim MY, Kim KW, Sohn MH. Respiratory microbiome profiles are associated with distinct inflammatory phenotype and lung function in children with asthma. J Investig Allergol Clin Immunol 2023:0. [PMID: 37260034 DOI: 10.18176/jiaci.0918] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023] Open
Abstract
BACKGROUND Respiratory microbiome studies have fostered our understanding of various phenotypes and endotypes of heterogeneous asthma. However, the relationship between the respiratory microbiome and clinical phenotypes in children with asthma remains unclear. We aimed to identify microbiome-driven clusters reflecting the clinical features of asthma and their dominant microbiotas in children with asthma. METHODS Induced sputum was collected from children with asthma, and microbiome profiles were generated via sequencing of the V3-V4 region of the 16S rRNA gene. Cluster analysis was performed using the partitioning around medoid clustering method. The dominant microbiota in each cluster was determined using the Linear Discriminant Effect Size analysis. Each cluster was analyzed for association among the dominant microbiota, clinical phenotype, and inflammatory cytokine. RESULTS Eighty-three children diagnosed with asthma were evaluated. Among four clusters reflecting the clinical characteristics of asthma, cluster 1, dominated by Haemophilus and Neisseria, demonstrated lower post-bronchodilator (BD) forced expiratory volume in 1 second (FEV1)/forced vital capacity (FVC) than that in the other clusters and more mixed granulocytic asthma. Neisseria negatively correlated with pre-BD and post-BD FEV1/FVC. Haemophilus and Neisseria positively correlated with programmed death-ligand (PD-L)1. CONCLUSION To our knowledge, this study is the first to analyze the relationship between an unbiased microbiome-driven cluster and clinical phenotype in children with asthma. The cluster dominated by Haemophilus and Neisseria showed fixed airflow obstruction and mixed granulocytic asthma, which correlated with PD-L1 levels. Thus, microbiome-driven unbiased clustering can help identify new asthma phenotypes related to endotypes in childhood asthma.
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Affiliation(s)
- Y H Kim
- Department of Pediatrics, Gangnam Severance Hospital, Seoul
- Institute of Allergy, Severance Biomedical Science Institute, Brain Korea 21 Project for Medical Science, Yonsei University College of Medicine, Seoul
| | - M R Park
- Department of Pediatrics, Gangnam Severance Hospital, Seoul
- Institute of Allergy, Severance Biomedical Science Institute, Brain Korea 21 Project for Medical Science, Yonsei University College of Medicine, Seoul
| | - S Y Kim
- Institute of Allergy, Severance Biomedical Science Institute, Brain Korea 21 Project for Medical Science, Yonsei University College of Medicine, Seoul
- Department of Pediatrics, Severance Hospital, Seoul
| | - M Y Kim
- Institute of Allergy, Severance Biomedical Science Institute, Brain Korea 21 Project for Medical Science, Yonsei University College of Medicine, Seoul
- Department of Pediatrics, Yongin Severance Hospital, Yongin, Korea
| | - K W Kim
- Institute of Allergy, Severance Biomedical Science Institute, Brain Korea 21 Project for Medical Science, Yonsei University College of Medicine, Seoul
- Department of Pediatrics, Severance Hospital, Seoul
| | - M H Sohn
- Institute of Allergy, Severance Biomedical Science Institute, Brain Korea 21 Project for Medical Science, Yonsei University College of Medicine, Seoul
- Department of Pediatrics, Severance Hospital, Seoul
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Min HK, Kang KY, Kim HR, Lee SH, Park S, Park M, Hong YS, Kim MY, Park SH. POS0146 INCREASED RISKS OF AORTIC REGURGITATION AND ATRIAL FIBRILLATION IN RADIOGRAPHIC AXIAL SPONDYLOARTHRITIS PATIENTS: A 10 YEAR NATIONWIDE COHORT STUDY. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.587] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BackgroundRadiographic axial spondyloarthritis (r-axSpA) has increased risk of cardiovascular disease. Other cardiac manifestations such as conduction disturbance and valvular diseases were also suggested as co-morbidities in r-axSpA patients, however, the risk of these cardiac manifestation in r-axSpA were seldomly evaluated in large cohort.ObjectivesTo compare the incidences of aortic regurgitation, atrial fibrillation (AF), and atrioventricular (AV) block II–III between r-axSpA patients and the general population (GP).MethodsNational Health Insurance Services data were used. R-axSpA patients (N = 8,877) and the age- and sex-matched GP (N = 26,631) were followed from August, 2006 to December, 2019. Incidence rates and standardized incidence ratios (SIR) of aortic regurgitation, AF, and AV block II–III were compared between these groups. Ten year incidence rates and hazard ratios (HRs) were calculated by the Kaplan–Meier method and Cox regression analysis.ResultsIncidence rates of aortic regurgitation, AV block II–III, and AF in the r-axSpA group were 0.42, 0.21, and 4.0 per 1000 person-years, respectively. In the r-axSpA group, the SIR for aortic regurgitation was highest among 40–49-year-old men (4.11). Incidence rates of aortic regurgitation and AF were higher in the r-axSpA group than in the GP group (both p < 0.001), whereas the difference was insignificant for AV block II–III. In multivariate analysis, HRs for aortic regurgitation and AF were higher in the r-axSpA group than in the GP group (HR (95% confidence interval) = 2.55 (1.49–4.37) and 1.20 (1.04–1.39), respectively), but the difference was insignificant for AV block II–III.ConclusionCompared with the GP, r-axSpA patients are at increased risk of aortic regurgitation and AF, but not AV block II–III. These patients should be carefully monitored for occurrence of aortic regurgitation and AF.References[1]Agca R, Heslinga SC, Rollefstad S, et al. EULAR recommendations for cardiovascular disease risk management in patients with rheumatoid arthritis and other forms of inflammatory joint disorders: 2015/2016 update. Ann Rheum Dis 2017; 76: 17-28.[2]Szabo SM, Levy AR, Rao SR, et al. Increased risk of cardiovascular and cerebrovascular diseases in individuals with ankylosing spondylitis: a population-based study. Arthritis Rheum 2011; 63: 3294-3304.[3]Morovatdar N, Watts GF, Bondarsahebi Y, et al. Ankylosing Spondylitis and risk of Cardiac Arrhythmia and Conduction Disorders: A systematic review and meta analysis. Curr Cardiol Rev 2021.[4]Bengtsson K, Forsblad-d’Elia H, Lie E, et al. Risk of cardiac rhythm disturbances and aortic regurgitation in different spondyloarthritis subtypes in comparison with general population: a register-based study from Sweden. Ann Rheum Dis 2018; 77: 541-548.[5]Dik VK, Peters MJ, Dijkmans PA, et al. The relationship between disease-related characteristics and conduction disturbances in ankylosing spondylitis. Scand J Rheumatol 2010; 39: 38-41.Disclosure of InterestsNone declared
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Kim SJ, Oh HS, Cha YS, Kim MY, Kim H. Evaluation of hepatic injury in acute carbon monoxide-poisoned patients in emergency department. Hum Exp Toxicol 2020; 39:883-889. [DOI: 10.1177/0960327120909521] [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] [Indexed: 12/20/2022]
Abstract
Introduction: The affinity of hemoglobin for carbon monoxide (CO) is 250 times higher than that for oxygen. Therefore, exposure to CO leads to a reduction in oxygen delivery to tissues, resulting in cellular hypoxia and affects whole body. Hepatic dysfunction in critically ill patients is related to poor outcome, but few studies have been conducted on this subject that occurs after CO poisoning. This study aims to conduct a study of hepatic injury in CO-poisoned patients in emergency department (ED). Methods: This retrospective observational study collected data from patients who were diagnosed with acute CO poisoning at the ED between June 2011 and May 2018 in local tertiary-care hospital (Wonju, Republic of Korea). The primary end point of this study was to describe the prevalence of hepatic injury in acute CO-poisoned patients. The secondary goals were to investigate the recovery trends of hepatic injury caused by acute CO poisoning and the relation to neurologic outcome and mortality. Results: Eight hundred ninety-four patients were enrolled in the final analysis, 128 cases (14.3%) had subclinical hepatic injury and 15 (1.6%) cases had hepatic injury. The relationship with mortality was not statistically significant. However, the hepatic injury group was higher incidence of intensive care unit admission and other complications. Patients in the hepatic injury group recovered through conservative management within 1 week of being admitted to the ED. Conclusions: While CO-induced hepatic injury is relatively uncommon, it can be associated with complications and poor neurologic outcome. However, CO-induced hepatic injury was not found to have a statistically significant effect on mortality rate.
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Affiliation(s)
- SJ Kim
- Department of Emergency Medicine, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
| | - HS Oh
- Department of Emergency Medicine, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
| | - YS Cha
- Department of Emergency Medicine, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
| | - MY Kim
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
| | - H Kim
- Department of Emergency Medicine, Yonsei University Wonju College of Medicine, Wonju, Republic of Korea
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Kim H, Park W, Choi DH, Ahn SJ, Kim SS, Kim ES, Lee JH, Lee KC, Kim JH, Lee HS, Kim JH, Kim MY, Park HJ, Kim K, Song SH, Kwon J, Lee IJ, Kim TH, Kim TG, Chang AR, Cho O, Jeong BK, Ha B, Lee J, Ki Y. Abstract OT2-04-02: A phase 3 study of post-lumpectomy radiotherapy to whole breast + regional lymph nodes vs whole breast alone for patients with pN1 breast cancer treated with taxane-based chemotherapy (KROG 1701): Trial in progress. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-ot2-04-02] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background
In patients with early stage breast cancer, regional nodal irradiation (RNI) is added to whole breast irradiation (WBI) in order to control microscopic regional disease and to prevent systemic spread of cancer. According to recent randomized trials (MA.20 and EORTC 22922-10925), prophylactic RNI was associated with improvement in disease-free survival (DFS) in the patients with high-risk node negative or pN1 breast cancer. However, systemic agents now known to improve loco-regional control, such as taxane or endocrine therapy, were prescribed to a small percentage of patients in the studies. The benefit of RNI found in the previous studies might be attributed to incorporation of less effective systemic treatments. The impact of prophylactic RNI in pN1 breast cancer should be evaluated in the patients receiving modern systemic treatment. The current study was conducted to compare the effect of post-lumpectomy WBI vs WBI plus RNI on DFS in pN1 breast cancer patients who received adjuvant taxane-based chemotherapy.
Methods
This study is a multicenter, phase 3, randomized controlled non-inferiority trial (NCT03269981). Eligibility criteria are ≥ 20 years female; pathologically proven invasive carcinoma of the breast; one to three positive axillary lymph nodes (pN1) in pathologic specimen; receiving breast-conserving surgery followed by taxane-based chemotherapy; having adjuvant endocrine therapy or anti-HER2 treatment according to molecular subtype of tumor. Patients are randomly assigned in a 1:1 ratio to receive WBI or WBI plus RNI. Patient randomization was stratified by molecular subtype of tumor (i.e. luminal A/luminal B/luminal HER2/HER2-enriched/triple-negative) and methods of axillary management (i.e. sentinel lymph node biopsy/axillary lymph node dissection). The primary outcome is DFS. The secondary outcomes include DFS according to molecular subtype, treatment-related toxicity, and patient's quality of life per EORTC QLQ-C30 and QLQ-BR23. Patients will be followed for survival and disease recurrence for seven years. A total of 1,926 patients are planned to be enrolled, with recruitment initiated in April 2017. As of June 2018, a total of 236 patients were enrolled.
Acknowledgement
This study was supported by a grant from the National R&D Program for Cancer Control, Ministry of Health & Welfare, Republic of Korea (grant number: HA17C0043010018).
Citation Format: Kim H, Park W, Choi DH, Ahn SJ, Kim SS, Kim ES, Lee JH, Lee KC, Kim JH, Lee H-S, Kim JH, Kim MY, Park HJ, Kim K, Song SH, Kwon J, Lee IJ, Kim TH, Kim TG, Chang AR, Cho O, Jeong BK, Ha B, Lee J, Ki Y. A phase 3 study of post-lumpectomy radiotherapy to whole breast + regional lymph nodes vs whole breast alone for patients with pN1 breast cancer treated with taxane-based chemotherapy (KROG 1701): Trial in progress [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr OT2-04-02.
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Affiliation(s)
- H Kim
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - W Park
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - DH Choi
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - SJ Ahn
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - SS Kim
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - ES Kim
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - JH Lee
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - KC Lee
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - JH Kim
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - H-S Lee
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - JH Kim
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - MY Kim
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - HJ Park
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - K Kim
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - SH Song
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - J Kwon
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - IJ Lee
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - TH Kim
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - TG Kim
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - AR Chang
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - O Cho
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - BK Jeong
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - B Ha
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - J Lee
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
| | - Y Ki
- Samsung Medical Center, Seoul, Republic of Korea; Chonnam National University Medical School, Gwangju, Republic of Korea; Asan Medical Center, Seoul, Republic of Korea; Soonchunhyang University College of Medicine, Cheonan, Republic of Korea; St. Vincent's Hospital, The Catholic University of Korea College of Medicine, Suwon, Republic of Korea; Gachon University Gil Medical Center, Incheon, Republic of Korea; Dongsan Medical Center, Keimyung University School of Medicine, Daegu, Republic of Korea; Dong-A University Hospital, Busan, Republic of Korea; Seoul National University Hospital, Seoul, Republic of Korea; Kyungpook National University Chilgok Hospital, Daegu, Republic of Korea; Hanyang University College of Medicine, Seoul, Republic of Korea; Ewha Womans University Mokdong Hospital, Seoul, Republic of Korea; Kangwon National University School of Medicine, Chuncheon, Republic of Korea; Chungnam National University College of Medicine, Daejeon, Republic of Korea; Gangnam Severance Hospital, Yonsei Univer
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Lee J, Kim MY, Kang SH, Kim J, Uh Y, Yoon KJ, Kim HS. The gamma-glutamyl transferase to platelet ratio and the FIB-4 score are noninvasive markers to determine the severity of liver fibrosis in chronic hepatitis B infection. Br J Biomed Sci 2018; 75:128-132. [DOI: 10.1080/09674845.2018.1459147] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- J Lee
- Department of Laboratory Medicine, Yonsei University Wonju College of Medicine , Wonju, Korea
| | - MY Kim
- Department of Internal Medicine, Yonsei University Wonju College of Medicine , Wonju, Korea
| | - SH Kang
- Department of Internal Medicine, Yonsei University Wonju College of Medicine , Wonju, Korea
| | - J Kim
- Department of Laboratory Medicine, Yonsei University Wonju College of Medicine , Wonju, Korea
| | - Y Uh
- Department of Laboratory Medicine, Yonsei University Wonju College of Medicine , Wonju, Korea
| | - KJ Yoon
- Department of Laboratory Medicine, Yonsei University Wonju College of Medicine , Wonju, Korea
| | - HS Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine , Seoul, Korea
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Kang SH, Lee YB, Lee JH, Nam JY, Chang Y, Cho H, Yoo JJ, Cho YY, Cho EJ, Yu SJ, Kim MY, Kim YJ, Baik SK, Yoon JH. Rifaximin treatment is associated with reduced risk of cirrhotic complications and prolonged overall survival in patients experiencing hepatic encephalopathy. Aliment Pharmacol Ther 2017; 46:845-855. [PMID: 28836723 DOI: 10.1111/apt.14275] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Revised: 03/26/2017] [Accepted: 07/30/2017] [Indexed: 12/16/2022]
Abstract
BACKGROUND Rifaximin might decrease the risk of portal hypertension-related complications by controlling small intestinal bacterial overgrowth. AIM To evaluate whether rifaximin was associated with the risk of death and cirrhotic complications. METHODS We conducted a retrospective study that included 1042 patients experiencing hepatic encephalopathy (HE): 421 patients without hepatocellular carcinoma (HCC; the non-HCC cohort) and 621 patients with HCC (the HCC cohort). The primary endpoint was overall survival and secondary endpoints were recurrence of HE and the development of spontaneous bacterial peritonitis (SBP), hepatorenal syndrome (HRS) and variceal bleeding. RESULTS In the non-HCC cohort, 145 patients received rifaximin plus lactulose (the rifaximin group) and 276 patients received lactulose alone (the control group). The multivariate analysis revealed that rifaximin was significantly associated with lower risk of death (adjusted hazard ratio [aHR], 0.697; P = .024) and reduced the risk of recurrent HE (aHR, 0.452; P < .001), SBP (aHR, 0.210; P < .001) and variceal bleeding (aHR, 0.425; P = .011) but not HRS (aHR, 0.598; P = .08). In the HCC cohort, 173 patients received rifaximin plus lactulose and 448 patients received lactulose. Rifaximin was not associated with the risk of death (aHR, 1.177; P = .121). Rifaximin was associated with lower risk of SBP (aHR, 0.323; P < .001) but not with variceal bleeding (aHR, 0.660; P = .104) or recurrent HE (aHR, 0.689; P = .057). The risk of Clostridium difficile-associated diarrhoea was not different between the groups (aHR, 0.028; P = .338). CONCLUSIONS In patients without HCC, rifaximin treatment was significantly associated with prolonged overall survival and reduced risks of spontaneous bacterial peritonitis, variceal bleeding and recurrent hepatic encephalopathy.
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Affiliation(s)
- S H Kang
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea.,Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Y B Lee
- Department of Internal Medicine, CHA Bundang Medical Center, CHA University, Seongnam, Korea
| | - J-H Lee
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - J Y Nam
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - Y Chang
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - H Cho
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - J-J Yoo
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - Y Y Cho
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - E J Cho
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - S J Yu
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - M Y Kim
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - Y J Kim
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - S K Baik
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, Korea
| | - J-H Yoon
- Department of Internal Medicine and Liver Research Institute, Seoul National University College of Medicine, Seoul, Korea
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Kim MY, Sikkel MB, Hunter R, Haywood G, Tomlinson D, Furniss G, Panagopoulos D, Tayebjee M, Begg G, Ali R, Cantwell C, Gonna H, Sandler B, Lim ZL, Lim PB, Peters NS, Linton N, Kanagaratnam P. 53Generation of the first functional map of left atrial ganglionated plexus sites that induce AV nodal bradycardia. Europace 2017. [DOI: 10.1093/europace/eux283.010] [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: 11/14/2022] Open
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Hauke A, Kumar LSS, Kim MY, Pegan J, Khine M, Li H, Plaxco KW, Heikenfeld J. Superwetting and aptamer functionalized shrink-induced high surface area electrochemical sensors. Biosens Bioelectron 2017; 94:438-442. [PMID: 28334628 DOI: 10.1016/j.bios.2017.03.024] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 03/10/2017] [Accepted: 03/11/2017] [Indexed: 12/15/2022]
Abstract
Electrochemical sensing is moving to the forefront of point-of-care and wearable molecular sensing technologies due to the ability to miniaturize the required equipment, a critical advantage over optical methods in this field. Electrochemical sensors that employ roughness to increase their microscopic surface area offer a strategy to combatting the loss in signal associated with the loss of macroscopic surface area upon miniaturization. A simple, low-cost method of creating such roughness has emerged with the development of shrink-induced high surface area electrodes. Building on this approach, we demonstrate here a greater than 12-fold enhancement in electrochemically active surface area over conventional electrodes of equivalent on-chip footprint areas. This two-fold improvement on previous performance is obtained via the creation of a superwetting surface condition facilitated by a dissolvable polymer coating. As a test bed to illustrate the utility of this approach, we further show that electrochemical aptamer-based sensors exhibit exceptional signal strength (signal-to-noise) and excellent signal gain (relative change in signal upon target binding) when deployed on these shrink electrodes. Indeed, the observed 330% gain we observe for a kanamycin sensor is 2-fold greater than that seen on planar gold electrodes.
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Affiliation(s)
- A Hauke
- Novel Devices Laboratory, School of Electronics and Computing Systems, University of Cincinnati, Cincinnati, OH 45221, USA
| | - L S Selva Kumar
- Novel Devices Laboratory, School of Electronics and Computing Systems, University of Cincinnati, Cincinnati, OH 45221, USA
| | - M Y Kim
- Department of Biomedical Engineering, University of California, Irvine, Irvine, CA 92697, USA
| | - J Pegan
- Department of Biomedical Engineering, University of California, Irvine, Irvine, CA 92697, USA
| | - M Khine
- Department of Biomedical Engineering, University of California, Irvine, Irvine, CA 92697, USA
| | - H Li
- Department of Chemistry and Center for Bioengineering, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
| | - K W Plaxco
- Department of Chemistry and Center for Bioengineering, University of California, Santa Barbara, Santa Barbara, CA 93106, USA
| | - J Heikenfeld
- Novel Devices Laboratory, School of Electronics and Computing Systems, University of Cincinnati, Cincinnati, OH 45221, USA.
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Jung J, Kim MY, Lee HJ, Park YS, Lee SO, Choi SH, Kim YS, Woo JH, Kim SH. Comparison of computed tomographic findings in pulmonary mucormycosis and invasive pulmonary aspergillosis. Clin Microbiol Infect 2015; 21:684.e11-8. [PMID: 25882362 DOI: 10.1016/j.cmi.2015.03.019] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Revised: 03/17/2015] [Accepted: 03/25/2015] [Indexed: 10/23/2022]
Abstract
Because there are no available molecular markers for pulmonary mucormycosis (PM), which has low culture sensitivity, early diagnosis and treatment rely heavily on imaging modes such as computed tomography (CT). However, there are limited data comparing CT findings for PM with those for invasive pulmonary aspergillosis (IPA). Adult patients who met the modified criteria for proven and probable PM (over an 11-year period) and IPA (over a 6-year period, owing to the availability of the galactomannan assay) according to the modified European Organization for Research and Treatment of Cancer/Mycosis Study Group definitions were retrospectively enrolled. IPA cases were selected at a 1 : 4 (PM/IPA) ratio. Thoracic CT scans were reviewed by two experienced radiologists blinded to the patients' demographics and clinical outcomes. A total of 24 patients with PM, including 20 (83%) with proven PM and four (17%) with probable PM, and 96 patients with IPA, including 12 (13%) with proven IPA and 84 (87%) with probable IPA, were eventually analysed. The reverse halo sign was more common in patients with PM (54%) than in those with IPA (6%, p < 0.001), whereas some airway-invasive features, such as clusters of centrilobular nodules, peribronchial consolidations, and bronchial wall thickening, were more common in patients with IPA (IPA 52% vs. PM 29%, p 0.04; IPA 49% vs. PM 21%, p 0.01; IPA 34% vs. PM 4%, p 0.003, respectively). The reverse halo sign was more common, and airway-invasive features were less common, in patients with PM than in those with IPA. These findings may help physicians to initiate Zygomycetes-active antifungal treatment earlier.
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Affiliation(s)
- J Jung
- Department of Infectious Diseases, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - M Y Kim
- Department of Radiology, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - H J Lee
- Department of Radiology, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Y S Park
- Department of Pathology, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - S-O Lee
- Department of Infectious Diseases, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - S-H Choi
- Department of Infectious Diseases, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Y S Kim
- Department of Infectious Diseases, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - J H Woo
- Department of Infectious Diseases, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - S-H Kim
- Department of Infectious Diseases, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea.
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Sun SL, Kim MY, Van K, Lee YH, Zhong C, Zhu ZD, Lestari P, Lee YW, Lee SH. First Report of Neocosmospora vasinfecta var. vasinfecta Causing Soybean Stem Rot in South Korea. Plant Dis 2014; 98:1744. [PMID: 30703896 DOI: 10.1094/pdis-06-14-0637-pdn] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In September 2010, stem rot symptoms were observed on soybean plants (cv. Daepungkong) growing in a field located at Daegu (35.52° N, 128.35° E), South Korea. The first noticeable symptoms, observed on the top leaves, were difficult to distinguish from those of sudden death syndrome (SDS). However, after splitting the stems of symptomatic plants, typical stem rot symptoms appeared as reddish-brown to dark-brown discoloration of the pith. Stem lesions extended 15 to 20 cm upward from the soil surface. To isolate the causal agent, sections of diseased stems were surface disinfected with 1% sodium hypochlorite, placed on potato dextrose agar (PDA) containing streptomycin sulfate, and incubated at 25°C with a 12-h light regime. Two isolates were obtained (SSLNV17 and SSLNV18). Mycelia were white and floccose. Conidia (4.5 to 11.2 × 2.2 to 3.4 μm) were cylindrical to oblong-ellipsoidal, hyaline, and one-celled. Both isolates produced abundant perithecia after 3 to 4 weeks. Perithecia (205 to 331 mm in diameter) were orange to red, globose and ostiolate, with a short neck (80 to 126 mm in diameter). Unitunicate asci (88.6 to 115.3 × 14.5 to 17.3 mm) were cylindrical to clavate, with a short stalk (6.0 to 9.5 × 5.0 to 6.8 mm), and eight spores. Ascospores (13.3 to 17.5 × 10.7 to 12.7 mm) were uniseriately arranged, globose to oval, one-celled, and hyaline to pale brown, with walls with a rugose ornamentation. These morphological features are consistent with those of Neocosmospora vasinfecta var. vasinfecta (1). The internal transcribed spacer (ITS) region, partial translation elongation factor 1-alpha (EF1-α), and β-tubulin genes of rDNA of the two isolates were sequenced using primers ITS4/ITS5 (GenBank Accession Nos. KF662732 and KF662733), EF1-728F/EF1-986R (KF758839 and KF758840), and Bt2a/Bt2b (KF771004 and KF771005), respectively. Sequences of the ITS region, EF1-α, and β-tubulin genes of both isolates showed 99% similarity with several reported N. vasinfecta strains by BLAST analysis. Both morphological and sequence analyses confirmed that the two isolates were N. vasinfecta var. vasinfecta. Pathogenicity tests of both isolates were performed on 15 three-week-old seedlings of soybean cv. Williams inoculated with a spore suspension containing 1.0 × 106 spores/ml, using stem puncture inoculation procedure under controlled conditions (4). Control plants were inoculated in the same way with sterile water. The results were observed by splitting the stem longitudinally and checking for discoloration of the pith 4 to 5 weeks after inoculation. Reddish-brown to dark-brown discoloration was observed in the stem pith of inoculated plants, with occasional chlorosis of the leaves. Moreover, numerous orange-red perithecia were produced on the inoculated stems. However, no symptoms were visible on control plants. The pathogen was re-isolated from the diseased plants, confirming Koch's postulates. Neocosmospora stem rot of soybean was first discovered in Japan and since then it has been reported in the United States and China (2,3,4). To our knowledge, this is the first record of soybean stem rot caused by N. vasinfecta var. vasinfecta in Korea. Our report indicates that Neocosmospora stem rot is a new threat to soybean production in Korea. References: (1) P. F. Cannon and D. L. Hawksworth. Trans. Br. Mycol. Soc. 82:673, 1984. (2) Y. Gai et al. Plant Dis. 95:1031, 2011. (3) F. A. Gray et al. Plant Dis. 64:321, 1980. (4) D. V. Phillips. Phytopathology 62:612, 1972.
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Affiliation(s)
- S L Sun
- Institute of Crop Science/National Key Facilities for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - M Y Kim
- Department of Plant Science and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 151-921, Korea
| | - K Van
- Department of Plant Science and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 151-921, Korea
| | - Y-H Lee
- Department of Plant Science and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 151-921, Korea
| | - C Zhong
- Institute of Crop Science/National Key Facilities for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Z D Zhu
- Institute of Crop Science/National Key Facilities for Crop Gene Resources and Genetic Improvement, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - P Lestari
- Center for Agricultural Biotechnology and Genetic Resources Research and Development, Jl. Tentara Pelajar 16111, Indonesia
| | - Y-W Lee
- Department of Agricultural Biotechnology and Center for Fungal Pathogenesis, Seoul National University, Seoul 151-921, Korea
| | - S-H Lee
- Department of Plant Science and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 151-921, Korea and Plant Genomics and Breeding Institute, Seoul National University, Seoul 151-921, Korea
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Kim MY, Yu BK, Choi JY, Oh TS. Thermoelectric characteristics of the p-type (Bi, Sb)2Te3 nanocomposites processed with silicon nanodispersion. J Nanosci Nanotechnol 2014; 14:7855-7859. [PMID: 25942880 DOI: 10.1166/jnn.2014.9421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The p-type (Bi0.2Sb0.8)2Te3 powders were mechanically alloyed and hot pressed at 500 degrees C for 30 minutes with dispersion of Si nanopowders up to 3 vol%. The thermal conductivity of the (Bi0.2Sb0.8)2Te3 nanocomposite was substantially reduced with dispersion of 0.3-3 vol% Si nanopowders due to the enhanced phonon scattering. The maximum dimensionless figure-of-merit of 1.32 at 75 degrees C was obtained for the (Bi0.2Sb0.8)2Te3 nanocomposite dispersed with 1 vol% Si nanopowders, compared to 1.08 of the specimen without Si nanopowder dispersion.
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Chan JSD, Abdo S, Ghosh A, Alquier T, Chenier I, Filep JG, Ingelfinger JR, Zhang SL, Ross EA, Willenberg BJ, Oca-Cossio J, Clapp WL, Terada N, Abrahamson DR, Ellison GW, Matthews CE, Batich CD, Ihoriya C, Satoh M, Sasaki T, Kashihara N, Piwkowska A, Rogacka D, Angielski S, Jankowski M, Pontrelli P, Conserva F, Papale M, Accetturo M, Gigante M, Vocino G, Dipalma AM, Grandaliano G, Di Paolo S, Gesualdo L, Franzen S, Pihl L, Khan N, Gustafsson H, Palm F, Koszegi S, Hodrea J, Lenart L, Hosszu A, Wagner L, Vannay A, Tulassay T, Szabo A, Fekete A, Aoki R, Sekine F, Kikuchi K, Miyazaki S, Yamashita Y, Itoh Y, Kolling M, Park JK, Haller H, Thum T, Lorenzen J, Hirayama A, Yoh K, Ueda A, Itoh H, Owada S, Kokeny G, Szabo L, Fazekas K, Rosivall L, Mozes MM, Kim Y, Koh ES, Lim JH, Kim MY, Chang YS, Park CW, Kim Y, Kim HW, Kim MY, Lim JH, Chang YS, Park CW, Shin BC, Kim HL, Chung JH, Chan JS, Wu TC, Chen JW, Rogacka D, Piwkowska A, Angielski S, Jankowski M, Clotet S, Soler MJ, Rebull M, Pascual J, Riera M, Patinha D, Afonso J, Sousa T, Morato M, Albino-Teixeira A, Kim H, Min HS, Kang MJ, Kim JE, Lee JE, Kang YS, Cha DR, Jo YI, Seo EH, Kim JD, Lee SH, Jorge L, Silva KAS, Luiz RS, Rampaso RR, Lima W, Cunha TS, Schor N, Lee HJ, Park JY, Kim SK, Moon JY, Lee SH, Ihm CG, Lee TW, Jeong KH, Moon JY, Kim S, Park JY, Kim SY, Kim YG, Jeong KH, Lee SH, Ihm CG, Marques C, Mega C, Goncalves A, Rodrigues-Santos P, Teixeira-Lemos E, Teixeira F, Fontes Ribeiro C, Reis F, Fernandes R, Sutariya BK, Badgujar LB, Kshtriya AA, Saraf MN, Chiu CH, Lee WC, Chau YY, Lee LC, Lee CT, Chen JB, Dahan I, Nakhoul F, Thawho N, Ben-Itzhaq O, Levy AP, Conserva F, Pontrelli P, Accetturo M, Cordisco G, Fiorentino L, Federici M, Grandaliano G, Di Paolo S, Gesualdo L, Wystrychowski G, Havel PJ, Graham JL, Zukowska-Szczechowska E, Obuchowicz E, Psurek A, Grzeszczak W, Wystrychowski A, Clotet S, Soler MJ, Rebull M, Gimeno J, Pascual J, Riera M, Almeida BZD, Seraphim DCC, Punaro G, Nascimento M, Mouro M, Lanzoni VP, Lopes GS, Higa EMS, Roca-Ho H, Riera M, Marquez E, Pascual J, Soler MJ. DIABETES EXPERIMENTAL. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu149] [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: 11/13/2022] Open
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Abstract
Conventional methods for studying paracrine signaling in vitro may not be sensitive to short-range effects resulting from signal dilution or decay. We employ a microfabricated culture substrate to maintain two cell populations in microscale proximity. Individual populations can be quickly retrieved for cell-specific readouts by standard high-throughput assays. We show that this platform is sensitive to short-range interactions that are not detectable by common methods such as conditioned media transfer or porous cell culture inserts, as revealed by gene expression changes in a tumor-stromal crosstalk model. In addition, we are able to detect population-specific gene expression changes that would have been masked in mixed co-cultures. We thus demonstrate a tool for investigating an important class of intercellular communication that may be overlooked in conventional biological studies.
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Affiliation(s)
- K H Spencer
- Department of Biomedical Engineering, University of California, Irvine, CA 92697-2715, USA.
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Choi S, Kim P, Boutilier R, Kim MY, Lee YJ, Lee H. Development of a high speed laser scanning confocal microscope with an acquisition rate up to 200 frames per second. Opt Express 2013; 21:23611-23618. [PMID: 24104273 DOI: 10.1364/oe.21.023611] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
There has been an increasing interest for observing fast biological phenomena such as cell movements in circulations and action potentials. The laser scanning confocal microscopy offers a good spatial resolution and optical sectioning ability to observe various in vivo animal models. We developed a high speed laser scanning confocal microscope capable of acquiring 512 by 512 pixel images at 200 fps (frames per second). We have incorporated a fast rotating polygonal scanning mirror with 128 facets for the X-axis scanner. In order to increase the throughput of the Y-axis scanner, we applied a bi-directional scanning method for vertical scanning. This made it possible to scan along the Y-axis two times during each scanner motion cycle. For the image acquisition, we used a custom photomultiplier tube amplifier with a broad frequency band. In addition, custom imaging software was written for the new microscope. In order to verify the acquisition speed of the developed confocal microscope, a resolution target moving at a series of constant speeds and a sedated mouse with slight movements due to heartbeats were observed. By comparing successive frames, the frame acquisition speeds were calculated.
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Choi JS, Han JY, Ahn HK, Ryu HM, Kim MY, Chung JH, An GH, Nava-Ocampo AA. Foetal and neonatal outcomes in first-trimester pregnant women exposed to abdominal or lumbar radiodiagnostic procedures without administration of radionucleotides. Intern Med J 2013. [DOI: 10.1111/imj.12043] [Citation(s) in RCA: 4] [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: 12/14/2022]
Affiliation(s)
- J. S. Choi
- Korean Motherisk Program; Kwandong University School of Medicine; Seoul Republic of Korea
- Division of Maternal-Fetal Medicine; Cheil General Hospital and Women's Healthcare Centre; Kwandong University School of Medicine; Seoul Republic of Korea
| | - J. Y. Han
- Korean Motherisk Program; Kwandong University School of Medicine; Seoul Republic of Korea
- Division of Maternal-Fetal Medicine; Cheil General Hospital and Women's Healthcare Centre; Kwandong University School of Medicine; Seoul Republic of Korea
| | - H. K. Ahn
- Korean Motherisk Program; Kwandong University School of Medicine; Seoul Republic of Korea
- Division of Maternal-Fetal Medicine; Cheil General Hospital and Women's Healthcare Centre; Kwandong University School of Medicine; Seoul Republic of Korea
| | - H. M. Ryu
- Division of Maternal-Fetal Medicine; Cheil General Hospital and Women's Healthcare Centre; Kwandong University School of Medicine; Seoul Republic of Korea
| | - M. Y. Kim
- Division of Maternal-Fetal Medicine; Cheil General Hospital and Women's Healthcare Centre; Kwandong University School of Medicine; Seoul Republic of Korea
| | - J. H. Chung
- Division of Maternal-Fetal Medicine; Cheil General Hospital and Women's Healthcare Centre; Kwandong University School of Medicine; Seoul Republic of Korea
| | - G. H. An
- Division of Maternal-Fetal Medicine; Cheil General Hospital and Women's Healthcare Centre; Kwandong University School of Medicine; Seoul Republic of Korea
| | - A. A. Nava-Ocampo
- PharmaReasons - Pharmacological Research and Applied Solutions; University of Toronto; Toronto Ontario Canada
- Department of Pharmacology and Toxicology; Faculty of Medicine; University of Toronto; Toronto Ontario Canada
- Division of Clinical Pharmacology and Toxicology; Hospital for Sick Children; Toronto Ontario Canada
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Blanco-Gozalo V, Blazquez-Medela A, Garcia-Sanchez O, Quiros Y, Montero M, Martinez-Salgado C, Lopez-Hernandez F, Lopez-Novoa J, Yao L, Qing Z, Hua X, Min F, Fei M, Ning W, Cantaluppi V, Figliolini F, Delena M, Beltramo S, Medica D, Tetta C, Segoloni G, Biancone L, Camussi G, Cunha JS, Ferreira VM, Naves MA, Boim MA, Zitman-Gal T, Golan E, Green J, Pasmanik-Chor M, Bernheim J, Benchetrit S, Riera M, Clotet S, Pascual J, Soler M, Nakai K, Fujii H, Kono K, Goto S, Hirata M, Shinohara M, Fukagawa M, Nishi S, Fan Q, Du S, Jiang Y, Wang L, Fang L, Radovits T, Mozes MM, Rosivall L, Kokeny G, Aoki R, Tateoka R, Sekine F, Kikuchi K, Yamashita Y, Itoh Y, Cappuccino L, Garibotto G, D'Amato E, Villaggio B, Gianiorio F, Mij M, Viazzi F, Salvidio G, Verzola D, Piwkowska A, Rogacka D, Audzeyenka I, Kasztan M, Angielski S, Jankowski M, Gaber EW, El-Attar HA, Liu J, Zhang W, He Y, Rogacka D, Piwkowska A, Audzeyenka I, Angielski S, Jankowski M, Macsai E, Takats Z, Derzbach L, Korner A, Vasarhelyi B, Huang MS, Bo H, Liu F, Fu P, Tsotakos NE, Tsilibary EC, Drossopoulou GI, Thawho N, Farid N, Peleg A, Levy A, Nakhoul N, Lenghel AR, Borza G, Catoi C, Bondor CI, Muresan A, Kacso IM, Song JS, Song JH, Ahn SH, Choi BS, Hong YA, Kim MY, Lim JH, Yang KS, Chung S, Shin SJ, Kim HW, Chang YS, Kim YS, Park CW, Takayanagi K, Hasegawa H, Shimizu T, Ikari A, Noiri C, Iwashita T, Tayama Y, Asakura J, Anzai N, Kanozawa K, Kato H, Mitarai T, Huang M, Bo H, Liu F, Fu P, Ashour RH, Fouda AEMM, Saad MA, El-Banna FM, Moustafa FA, Fouda MI, Sanchez-Nino MD, Sanz AB, Poveda J, Saleem M, Mathieson P, Ruiz-Ortega M, Selgas R, Egido J, Ortiz A, Clotet S, Soler MJ, Rebull M, Pascual J, Riera M, Marquez E, Riera M, Pascual J, Soler MJ, Asakura J, Hasegawa H, Takayanagi K, Tayama Y, Shimizu T, Iwashita T, Okazaki S, Kogure Y, Sano T, Hatano M, Kanozawa K, Kato H, Mitarai T, Kreft E, Kowalski R, Kasztan M, Jankowski M, Szczepansk-Konkel M, Fan Q, Liu X, Yang G, Jiang Y, Wang L, Osman NA, NasrAllah MM, Kamal MM, Ahmed AI, Fekih-Mrissa N, Mrad M, Baffoun A, Sayeh A, Hmida J, Gritli N, Galchinskaya V, Topchii I, Semenovykh P, Yefimova N, Zheng D, Hu D, Li X, Peng AI, Olea-Herrero N, Arenas M, Munoz-Moreno C, Moreno-Gomez-Toledano R, Gonzalez-Santander M, Arribas I, Bosch R. Diabetes - experimental models. Nephrol Dial Transplant 2013. [DOI: 10.1093/ndt/gft137] [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] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Kim HM, Lim YY, Kim MY, Son IP, Kim DH, Park SR, Seo SK, Lee MS, Mun SK, Kim CW, Kim BJ. Inhibitory effect of tianeptine on catagen induction in alopecia areata-like lesions induced by ultrasonic wave stress in mice. Clin Exp Dermatol 2013; 38:758-67. [PMID: 23581888 DOI: 10.1111/ced.12047] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/27/2012] [Indexed: 11/29/2022]
Abstract
BACKGROUND Alopecia areata (AA) is characterized by rapid and complete hair loss in one or multiple areas of the scalp. Stress is an important triggering factor in AA. AIM To identify the inhibitory effect of tianeptine on catagen induction in C57BL/6 mice with AA-like lesions induced by ultrasonic wave stress (UWS). METHODS The mice were divided into four groups. Group 1 received oral tianeptine before and after UWS; group 2 received oral tianeptine only after UWS; group 3 was given UWS treatment only; and group 4 (negative control group) was not given any treatment. Phototrichigraphy and dermatoscopy were used for assessment. Histological analysis was performed using haematoxylin and eosin, toluidine blue, Masson trichrome and Verhoeff-van Gieson stains. Immunohistochemical analysis was also performed. The level of apoptosis and expression of neuropeptides in the skin were assessed by terminal deoxynucleotidyl transferase dUTP nick end labelling and immunofluorescence assays. RESULTS Mice in group 1 had an increased rate of hair growth and greater hair-shaft thickness compared with mice in groups 2 and 3. In addition, mice in group 1 had a higher number of anagen hair follicles, increased synthesis of collagen and elastic fibres, decreased mast-cell degranulation, reduction in cell apoptosis in hair follicles, and recovery of vitamin D receptor expression. Expression of neuropeptides (substance P, calcitonin gene-related peptide) was not altered. CONCLUSIONS Tianeptine might play a role in suppressing catagen induction in a stress-induced AA mouse model.
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Affiliation(s)
- H M Kim
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
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Kim MY, Jo SH, Park JM, Kim TH, Im SS, Ahn YH. Adenovirus-mediated overexpression of Tcfe3 ameliorates hyperglycaemia in a mouse model of diabetes by upregulating glucokinase in the liver. Diabetologia 2013; 56:635-43. [PMID: 23269357 DOI: 10.1007/s00125-012-2807-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2012] [Accepted: 12/04/2012] [Indexed: 11/30/2022]
Abstract
AIMS/HYPOTHESIS Transcription factor E3 (TFE3) has been shown to increase insulin sensitivity by activating insulin-signalling pathways. However, the role of TFE3 in glucose homeostasis is not fully understood. Here, we explored the possible therapeutic potential of TFE3 for the control of hyperglycaemia using a streptozotocin-induced mouse model of diabetes. METHODS We achieved overabundance of TFE3 in streptozotocin mice by administering an adenovirus (Ad) or adeno-associated virus serotype 2 (AAV2). We also performed an oral glucose tolerance test (OGTT) and insulin tolerance test (ITT). To explore molecular mechanisms of blood glucose control by TFE3, transcriptional studies on the regulation of genes involved in hepatic glucose metabolism were performed using quantitative real-time PCR and chromatin immunoprecipitation assay. The binding site of TFE3 in the liver Gck gene promoter was identified using deletion and site-specific mutation studies. RESULTS Overabundance of TFE3 resulted in reduced hyperglycaemia as shown by the OGTT and ITT in streptozotocin-treated mice. We observed that TFE3 can upregulate Gck in a state of insulin deficiency. However, glucose-6-phosphatase and cytosolic phosphoenolpyruvate carboxykinase mRNA levels were decreased by Ad-mediated overexpression of Tcfe3. Biochemical studies revealed that the anti-hyperglycaemic effect of TFE3 is due to the upregulation of Gck. In primary cultured hepatocytes, TFE3 increased expression of Gck mRNA. Conversely, small interfering RNA-mediated knockdown of TFE3 resulted in a decrease in Gck mRNA. CONCLUSIONS/INTERPRETATION This study demonstrates that TFE3 counteracts hyperglycaemia in streptozotocin-treated mice. This effect could be due to the upregulation of Gck by binding of TFE3 to its cognitive promoter region.
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Affiliation(s)
- M Y Kim
- Department of Biochemistry and Molecular Biology, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-752, Republic of Korea
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Kim MY, Chaudhary P, Shulman IA, Pullarkat V. Major non-ABO incompatibility caused by anti-Jk(a) in a patient before allogeneic hematopoietic stem cell transplantation. Immunohematology 2013; 29:11-14. [PMID: 24046917] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A 49-year-old white man with blood group AB, D+ was found to have alloanti-Jk(a) and -K when he developed a delayed hemolytic transfusion reaction before allogeneic hematopoietic stem cell transplant (HSCT). Given that his stem cell donor was blood group O, D+, Jk(a+), K-, rituximab was added to his conditioning regimen of fludarabine and melphalan to prevent hemolysis of engrafting Jk(a+) donor red blood cells. The patient proceeded to receive a peripheral blood stem cell transplant from a matched unrelated donor with no adverse events. To our knowledge, this is the first case of successful management of major non-ABO incompatibility caused by anti-Jk(a) in a patient receiving an allogeneic HSCT reported in the literature.
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Affiliation(s)
- M Y Kim
- Division of Hematology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
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Kim MY, Lim JH, Youn HH, Hong YA, Yang KS, Park HS, Chung S, Ko SH, Shin SJ, Choi BS, Kim HW, Kim YS, Lee JH, Chang YS, Park CW. Resveratrol prevents renal lipotoxicity and inhibits mesangial cell glucotoxicity in a manner dependent on the AMPK-SIRT1-PGC1α axis in db/db mice. Diabetologia 2013; 56:204-17. [PMID: 23090186 DOI: 10.1007/s00125-012-2747-2] [Citation(s) in RCA: 232] [Impact Index Per Article: 21.1] [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: 06/12/2012] [Accepted: 09/03/2012] [Indexed: 12/14/2022]
Abstract
AIMS/HYPOTHESIS Many of the effects of resveratrol are consistent with the activation of AMP-activated protein kinase (AMPK), silent information regulator T1 (SIRT1) and peroxisome proliferator-activated receptor (PPAR)γ co-activator 1α (PGC-1α), which play key roles in the regulation of lipid and glucose homeostasis, and in the control of oxidative stress. We investigated whether resveratrol has protective effects on the kidney in type 2 diabetes. METHODS Four groups of male C57BLKS/J db/m and db/db mice were used in this study. Resveratrol was administered via gavage to diabetic and non-diabetic mice, starting at 8 weeks of age, for 12 weeks. RESULTS The db/db mice treated with resveratrol had decreased albuminuria. Resveratrol ameliorated glomerular matrix expansion and inflammation. Resveratrol also lowered the NEFA and triacylglycerol content of the kidney, and this action was related to increases in the phosphorylation of AMPK and the activation of SIRT1-PGC-1α signalling and of the key downstream effectors, the PPARα-oestrogen-related receptor (ERR)-1α-sterol regulatory element-binding protein 1 (SREBP1). Furthermore, resveratrol decreased the activity of phosphatidylinositol-3 kinase (PI3K)-Akt phosphorylation and class O forkhead box (FOXO)3a phosphorylation, which resulted in a decrease in B cell leukaemia/lymphoma 2 (BCL-2)-associated X protein (BAX) and increases in BCL-2, superoxide dismutase (SOD)1 and SOD2 production. Consequently, resveratrol reversed the increase in renal apoptotic cells and oxidative stress, as reflected by renal 8-hydroxy-deoxyguanosine (8-OH-dG), urinary 8-OH-dG and isoprostane concentrations. Resveratrol prevented high-glucose-induced oxidative stress and apoptosis in cultured mesangial cells through the phosphorylation of AMPK and activation of SIRT1-PGC-1α signalling and the downstream effectors, PPARα-ERR-1α-SREBP1. CONCLUSIONS/INTERPRETATION The results suggest that resveratrol prevents diabetic nephropathy in db/db mice by the phosphorylation of AMPK and activation of SIRT1-PGC-1α signalling, which appear to prevent lipotoxicity-related apoptosis and oxidative stress in the kidney.
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Affiliation(s)
- M Y Kim
- Department of Internal Medicine, Seoul St Mary's Hospital, The Catholic University of Korea, #505, Banpo-Dong, Seocho-Ku, Seoul 137-040, Republic of Korea
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Ahn JY, Jung HY, Choi JY, Kim MY, Lee JH, Choi KS, Kim DH, Choi KD, Song HJ, Lee GH, Kim JH, Park YS. Natural course of noncurative endoscopic resection of differentiated early gastric cancer. Endoscopy 2012. [PMID: 23188661 DOI: 10.1055/s-0032-1325676] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND AND STUDY AIMS Following noncurative endoscopic resection of early gastric cancer (EGC), the patient should be observed when the underlying disease is severe, the patient is elderly, or the patient refuses further treatment. The aim of this study was to analyze the clinical outcomes of patients with differentiated EGC who underwent noncurative endoscopic resection without additional treatment. PATIENTS AND METHODS Included patients underwent noncurative endoscopic resection for differentiated EGC without additional treatment at the Asan Medical Center between July 1994 and January 2009. Clinical and oncological outcomes were analyzed. RESULTS A total of 159 patients were included in the analysis. The median follow-up period was 33 months (interquartile range [IQR] 22 - 52 months). In total, 40 patients died (25.2 %) - 3 due to stomach cancer, 34 due to other causes, and 3 from unknown causes; the median survival time after endoscopic treatment for these patients was 27.5 months (IQR 13.8 - 48.3 months). Multivariate analysis showed that the rates of underlying disease (P < 0.001) and lymphovascular invasion (P = 0.005) were higher among the 40 patients who died than among the 119 survivors. The overall 3- and 5-year survival rates were 82.9 % and 77.1 %, respectively; the rates of the patients with lymphovascular invasion were 61.9 % and 42.4 %, respectively, and the rates of patients without lymphovascular invasion were 86.1 % and 81.8 %, respectively (P < 0.001). CONCLUSIONS Additional treatment provides fewer benefits to patients who do not have long life expectancies. Additional surgery can be considered for patients with lymphovascular invasion because of its high mortality rate; however, the benefits and risks of surgery should be considered carefully.
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Affiliation(s)
- J Y Ahn
- Department of Gastroenterology, University of Ulsan College of Medicine, Asan Medical Center, Asan Digestive Disease Research Institute, Seoul, South Korea
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Gok Oguz E, Olmaz R, Turgutalp K, Muslu N, Sungur MA, Kiykim A, Van Biesen W, Vanmassenhove J, Glorieux G, Vanholder R, Chew S, Forster K, Kaufeld T, Kielstein J, Schilling T, Haverich A, Haller H, Schmidt B, Hu P, Liang X, Liang X, Chen Y, LI R, Jiang F, LI Z, Shi W, Lim CCW, Lim CCW, Chia CML, Tan AK, Tan CS, Hu P, Liang X, Liang X, Chen Y, LI R, Jiang F, LI Z, Shi W, Ng R, Subramani S, Chew S, Perez de Jose A, Bernis Carro C, Madero Jarabo R, Bustamante J, Sanchez Tomero JA, Chung W, Ro H, Chang JH, Lee HH, Jung JY, Vanmassenhove J, Van Biesen W, Glorieux G, Vanholder R, Fazzari L, Giuliani A, Scrivano J, Pettorini L, Benedetto U, Luciani R, Roscitano A, Napoletano A, Coclite D, Cordova E, Punzo G, Sinatra R, Mene P, Pirozzi N, Shavit L, Shavit L, Manilov R, Algur N, Wiener-Well Y, Slotki I, Pipili C, Pipili C, Vrettou CS, Avrami K, Economidou F, Glynos K, Ioannidou S, Markaki V, Douka E, Nanas S, De Pascalis A, De Pascalis A, Cofano P, Proia S, Valletta A, Vitale O, Russo F, Buongiorno E, Filiopoulos V, Biblaki D, Lazarou D, Chrysis D, Fatourou M, Lafoyianni S, Vlassopoulos D, Zakiyanov O, Kriha V, Vachek J, Svarcova J, Zima T, Tesar V, Kalousova M, Kaushik M, Kaushik M, Ronco C, Cruz D, Zhang L, Zhang W, Zhang W, Chen N, Ejaz AA, Kambhampati G, Ejaz N, Dass B, Lapsia V, Arif AA, Asmar A, Shimada M, Alsabbagh M, Aiyer R, Johnson R, Chen TH, Chang CH, Chang MY, Tian YC, Hung CC, Fang JT, Yang CW, Chen YC, Cantaluppi V, Quercia AD, Figliolini F, Giacalone S, Pacitti A, Gai M, Guarena C, Leonardi G, Leonardi G, Biancone L, Camussi G, Segoloni GP, De Cal M, Lentini P, Clementi A, Virzi GM, Scalzotto E, Ronco C, Lacquaniti A, Lacquaniti A, Donato V, Fazio MR, Lucisano S, Cernaro V, Lupica R, Buemi M, Turgutalp K, Helvaci I, Anik E, Kiykim A, Wani M, Wani DI, Bhat DMA, Banday DK, Najar DMS, Reshi DAR, Palla DNA, Turgutalp K, Kiykim A, Helvaci I, Iglesias P, Olea T, Vega-Cabrera C, Heras M, Bajo MA, Del Peso G, Arias MJ, Selgas R, Diez JJ, Daher E, Costa PL, Pereira ENS, Santos RDP, Abreu KL, Silva Junior G, Pereira EDB, Raimundo M, Crichton S, Syed Y, Martin J, Whiteley C, Bennett D, Ostermann M, Gjyzari A, Thereska N, Koroshi A, Barbullushi M, Kodra S, Idrizi A, Strakosha A, Petrela E, Raimundo M, Crichton S, Syed Y, Martin J, Lemmich Smith J, Bennett D, Ostermann M, Klimenko A, Tuykhmenev E, Villevalde S, Kobalava Z, Avdoshina S, Villevalde S, Tyukhmenev E, Efremovtseva M, Kobalava Z, Hayashi H, Hayashi H, Suzuki S, Kataoka K, Kondoh Y, Taniguchi H, Sugiyama D, Nishimura K, Sato W, Maruyama S, Matsuo S, Yuzawa Y, Geraldine D, Muriel F, Alexandre H, Eric R, Fu P, Zhang L, Pozzato M, Ferrari F, Cecere P, Mesiano P, Vallero A, Livigni S, Quarello F, Hudier L, Decaux O, Haddj-Elmrabet A, Mandart L, Lino-Daniel M, Bridoux F, Renaudineau E, Sawadogo T, Le Pogamp P, Vigneau C, Famee D, Koo HM, Oh HJ, Han SH, Choi KH, Kang SW, Mehdi M, Nicolas M, Mariat C, Shah P, Kute VB, Vanikar A, Gumber M, Patel H, Trivedi H, Pipili C, Pipili C, Manetos C, Vrettou CS, Poulaki S, Tripodaki ES, Papastylianou A, Routsi C, Nanas S, Uchida K, Kensuke U, Yamagata K, Saitou C, Okada M, Chita G, Davies M, Veriawa Y, Naicker S, Mukhopadhyay P, Mukherjee D, Mishra R, Kar M, Zickler D, Wesselmann H, Schindler R, Gutierrez* E, Egido J, Rubio-Navarro A, Buendia I, Blanco-Colio LM, Toldos O, Manzarbeitia F, De Lorenzo A, Sanchez R, Praga^ M, Moreno^ JA, Kim MY, Kang NR, Jang HR, Lee JE, Huh W, Kim YG, Kim DJ, Hong SC, Kim JS, Oh HY, Okamoto T, Kamata K, Naito S, Tazaki H, Kan S, Anne-Kathrin LG, Matthias K, Speer T, Andreas L, Heinrich G, Thomas V, Poppleton A, Danilo F, Matthias K, Lai CF, Wu VC, Shiao CC, Huang TM, Wu KD, Bedford M, Farmer C, Irving J, Stevens P, Patera F, Patera F, Mattozzi F, Battistoni S, Fagugli RM, Park MY, Choi SJ, Kim JG, Hwang SD, Xie H, Chen H, Xu S, He Q, Liu J, Hu W, Liu Z, Dalboni M, Blaya R, Quinto BM, Narciso R, Oliveira M, Monte J, Durao M, Cendoroglo M, Batista M, Hanemann AL, Liborio A, Daher E, Martins A, Pinheiro MCC, Silva Junior G, Meneses G, De Paula Pessoa R, Sousa M, Bezerra FSM, Albuquerque PLMM, Lima JB, Lima CB, Veras MDSB, Silva Junior G, Daher E, Nemoto Matsui T, Totoli C, Cruz Andreoli MC, Vilela Coelho MP, Guimaraes de Souza NK, Ammirati AL, De Carvalho Barreto F, Ferraz Neto BH, Fortunato Cardoso Dos Santos B, Abraham A, Abraham G, Mathew M, Duarte PMA, Duarte FB, Barros EM, Castro FQS, Silva Junior G, Daher E, Palomba H, Castro I, Sousa SR, Jesus AN, Romano T, Burdmann E, Yu L, Kwon SH, You JY, Hyun YK, Woo SA, Jeon JS, Noh HJ, Han DC, Tozija L, Tozija L, Petronievic Z, Selim G, Nikolov I, Stojceva-Taneva O, Cakalaroski K, Lukasz A, Beneke J, Schmidt B, Kielstein J, Haller H, Menne J, Schiffer M, Polanco N, Hernandez E, Gutierrez E, Gutierrez Millet V, Gonzalez Monte E, Morales E, Praga M, Francisco Javier L, Nuria GF, Jose Maria MG, Bes Rastrollo M, Angioi A, Conti M, Cao R, Atzeni A, Pili G, Matta V, Murgia E, Melis P, Binda V, Pani A, Thome* F, Leusin F, Barros E, Morsch C, Balbinotto A, Pilla C, Premru V, Buturovic-Ponikvar J, Ponikvar R, Marn-Pernat A, Knap B, Kovac J, Gubensek J, Kersnic B, Krnjak L, Prezelj M, Granatova J, Havrda M, Hruskova Z, Kratka K, Remes O, Mokrejsova M, Bolkova M, Lanska V, Rychlik I, Uniacke MD, Lewis RJ, Harris S, Roderick P, Thome* F, Balbinotto A, Barros E, Morsch C, Martin N, Ulrich K, Jan B, Jorn B, Reinhard B, Jan K, Hermann H, Meyer Tobias F, Leyla R, Schmidt Bernhard MW, Harald S, Jurgen S, Tanja K, Menne J, Mario S, Jan B, Jan B, Sang Hi E, Leyla R, Claus M, Frank V, Aleksej S, Sengul S, Jan K, Jorn B, Reinhard B, Meyer Tobias F, Schmidt Bernhard MW, Mario S, Martin N, Ulrich K, Robert S, Karin W, Tanja K, Hermann H, Menne J, Leyla R, Leyla R, Jan K, Jan B, Reinhard B, Feikah G, Hermann H, Tanja K, Ulrich K, Menne Tobias F, Claus M, Martin N, Mario S, Schmidt Bernhard MW, Harald S, Jurgen S, Menne J, Claus M, Claus M, Jan K, Jan B, Reinhard B, Feikah G, Hermann H, Ulrich K, Menne Tobias F, Meyer Tobias N, Martin N, Leyla R, Schmidt Bernhard MW, Harald S, Jurgen S, Tanja K, Mario S, Menne J, Kielstein J, Beutel G, Fleig S, Steinhoff J, Meyer T, Hafer C, Bramstedt J, Busch V, Vischedyk M, Kuhlmann U, Ries W, Mitzner S, Mees S, Stracke S, Nurnberger J, Gerke P, Wiesner M, Sucke B, Abu-Tair M, Kribben A, Klause N, Schindler R, Merkel F, Schnatter S, Dorresteijn E, Samuelsson O, Brunkhorst R, Stec-Hus Registry G, Reising A, Hafer C, Kielstein J, Schmidt B, Bange FC, Hiss M, Vetter F, Kielstein J, Beneke J, Bode-Boger SM, Martens-Lobenhoffer J, Schiffer M, Schmidt BMW, Haller H, Menne J, Kielstein JT, Shin HS, Jung YS, Rim H. AKI - Clinical. Nephrol Dial Transplant 2012. [DOI: 10.1093/ndt/gfs235] [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: 11/13/2022] Open
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Lee HJ, Han JY, Yook JH, Choi JS, Ahn HK, Kim MY, Song IO, Yang JH, Nava-Ocampo AA. A prospective cohort study of pregnancy outcomes of women inadvertently exposed to methylephedrine in the 1st trimester of pregnancy. J OBSTET GYNAECOL 2011; 30:563-6. [PMID: 20701502 DOI: 10.3109/01443615.2010.487577] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
No information is currently available on the safety of methylephedrine, a component of various cold medications available in South Korea. With previous approval by an Institutional Review Board, 349 women inadvertently exposed to methylephedrine during the 1st trimester of pregnancy and an age- and gravidity-matched control group, were enrolled in a prospective cohort study. Study outcomes, for example gestational age at birth, birth weight and major and minor malformations were evaluated in 282 cases and 280 controls. Exposure to methylephedrine was at a gestational age of 4.0 weeks (median), at doses ranging from 52.5 to 1,575 mg/day, for a median duration of 3 (range: 1-30) days. No differences were observed between cases and controls in any of the pregnancy outcomes studied. There were 4/265 (1.5%) babies born with major malformations in the case group and 4/260 (1.5%) in the control group. In conclusion, inadvertent exposure to methylephedrine as a component of over-the counter oral cold remedies in early pregnancy was not associated with an increased rate of adverse pregnancy outcomes. Co-exposure with acetaminophen, cigarette smoking or alcohol did not appear to modify the outcomes.
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Affiliation(s)
- H J Lee
- Korean Motherisk Program, Department of Obstetrics and Gynecology, Cheil Hospital and Women's Healthcare Center, Kwandong University College of Medicine, Seoul, Korea
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Park SH, Kim EJ, Oh SA, Kim CK, Choi SS, Cho SJ, Han KY, Lee JI, Kim MY, Jung HS, Chun DS, Kim HS. Viral agents associated with acute gastroenteritis in Seoul, Korea. Clin Lab 2011; 57:59-65. [PMID: 21391466] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
BACKGROUND The present study was carried out to describe the epidemiologic characteristics of viral gastroenteritis and determine the phylogenetic composition of norovirus strains detected in hospitalized children with acute gastroenteritis in Seoul, Korea. METHODS AND RESULTS In total, 10,603 stool samples were collected from 2004 to 2008 and tested by RT-PCR or ELISA. In 4,170 (39.3%) samples at least one viral pathogen was present. Rotavirus (RoV) (1,864, 17.5%) was found to be the causative agent followed by norovirus (NoV) (1,845, 17.4%), human adenovirus (HAdV) (266, 2.5%), human astrovirus (HAstV) (194, 1.8%), and sapovirus (SV) (1, 0.009%). Five GI genotypes (GI-1, GI-3, GI-4, GI-8, and GI-9) and eight GII genotypes (GII-2, GII-3, GII-4, GII-6, GII-7, GII-12, GII-16, and GII-17) of NoV were identified in acute gastroenteritis patients in 2008. CONCLUSIONS The genetic characteristics of norovirus and the epidemiologic patterns of a viral pathogen from acute gastroenteritis patients may give potentially effective data for epidemiological studies in Seoul, Korea.
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Affiliation(s)
- S H Park
- Seoul Metropolitan Government Research Institute of Public Health and Environment, Virus team, Republic of Korea.
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Lee CS, Song JW, Chae EJ, Lee CW, Do KH, Seo JB, Kim MY, Lee JS, Song KS. Radiological findings and clinical features of thoracic immunoglobulin G4-positive plasma cell granuloma: two cases. Br J Radiol 2010; 83:e150-3. [PMID: 20603401 DOI: 10.1259/bjr/77516426] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Plasma cell granulomas, inflammatory pseudotumours and myofibroblastomas are synonymous with characteristic plasma cell infiltration in various body organs including the pancreas, liver, retroperitoneum and mediastinal structures causing idiopathic fibrosclerosis. Recently, a new concept has arisen regarding the relationship between immunoglobulin (Ig)G4-positive cell infiltration and idiopathic systemic fibrosclerosis. We report two cases showing IgG4-positive cell infiltration in the lung presenting as lung nodules with or without extrapulmonary manifestations.
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Affiliation(s)
- C S Lee
- Department of Radiology, University of Ulsan College of Medicine, Songpa-gu, Seoul, Korea
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Kim SU, Seo YS, Cheong JY, Kim MY, Kim JK, Um SH, Cho SW, Paik SK, Lee KS, Han KH, Ahn SH. Factors that affect the diagnostic accuracy of liver fibrosis measurement by Fibroscan in patients with chronic hepatitis B. Aliment Pharmacol Ther 2010; 32:498-505. [PMID: 20491742 DOI: 10.1111/j.1365-2036.2010.04353.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Interquartile range/median value (IQR/M) of liver stiffness measurement (LSM) is a factor in chronic hepatitis C (CHC) leading to over estimation of fibrosis by Fibroscan. AIM To investigate factors that affect the accuracy of LSM in chronic hepatitis B (CHB). METHODS One hundred and ninety-nine patients were enrolled. Only procedures yielding > or =10 valid measurements were considered reliable. Liver fibrosis was evaluated using the Batts and Ludwig system. Liver biopsy (LB) specimens <15 mm were considered ineligible. RESULTS The mean age (142 men and 57 women) was 40.1 years. A significant discordance (discordance of at least two stages between LB and LSM) was identified in 38 (19.1%) and 47 (23.6%) patients respectively, according to Marcellin et al. and Chan et al.'s cutoff values. In multivariate analyses, BMI and fibrosis stage (F0-2 vs. F3-4) were identified as independent predictors for significant discordance (P = 0.040; hazard ratio [HR], 1.126; 95% confidence interval [CI], 1.005-1.261 and P = 0.036; HR, 0.450; 95% CI, 0.213-0.949 respectively) with Marcellin et al.'s cutoffs, whereas fibrosis stage was the only independent predictor (P = 0.004; HR, 0.300; 95% CI, 0.131-0.685) with Chan's cutoffs. CONCLUSIONS Success rate and IQR/M were not predictive factors of the accuracy for diagnosing liver fibrosis by Fibroscan in CHB. Fibrosis stage (F0-2) was the only factor to predict significant discordance between LB and LSM.
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Affiliation(s)
- S U Kim
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
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Kim MY, Kaduwal S, Yang DH, Choi KY. Bone morphogenetic protein 4 stimulates attachment of neurospheres and astrogenesis of neural stem cells in neurospheres via phosphatidylinositol 3 kinase-mediated upregulation of N-cadherin. Neuroscience 2010; 170:8-15. [PMID: 20638445 DOI: 10.1016/j.neuroscience.2010.07.020] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [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: 03/10/2010] [Revised: 07/01/2010] [Accepted: 07/09/2010] [Indexed: 11/15/2022]
Abstract
The neurosphere culture system is useful for expanding neural stem cells (NSCs) without affecting self-renewal potential and multipotency. However, the extrinsic signals that affect the formation or dissociation of neurospheres are poorly understood. Here, we found that bone morphogenetic protein 4 (BMP4) induced the attachment of neurospheres, astrocytic differentiation, and migration of neurosphere NSCs. These outcomes were accompanied by Akt activation and upregulation of the adhesion molecule, N-cadherin. A phosphatidylinositol 3 kinase (PI3 kinase) inhibitor (LY294002) blocked attachment of neurosphere, astrocytic differentiation, migration, and N-cadherin upregulation of neurosphre NSCs. The PI3 kinase-Akt pathway appeared to selectively mediate the effects of BMP4, as neurosphere attachment was unaffected by MEK inhibitors (PD98059 and U0126). Importantly, a neutralizing N-cadherin antibody inhibited BMP4-induced neurosphere attachment, astrocytic differentiation, and migration of neurosphere NSCs. Together, these findings show that BMP4-induced attachment of neurospheres is related to the astrocytic differentiation of these cells and that these effects are attributable, at least in part, to PI3 kinase-Akt pathway-dependent induction of N-cadherin.
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Affiliation(s)
- M Y Kim
- Translational Research Center for Protein Function Control, College of Life Science and Biotechnology, Yonsei University, Seoul 120-749, Korea
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Abstract
OBJECTIVE To investigate the in-utero development of the fetal anal sphincter using transabdominal ultrasound. METHODS This was a cross-sectional study in which the diameter of the fetal anal sphincter was measured sonographically once in 631 well-dated, non-anomalous fetuses scanned between 19 and 38 weeks of gestation. Visualization rates were determined. Regression analysis was used to assess the relationship between the diameter of the fetal anal sphincter and gestational age (GA), and reference values including the mean and 95% reference interval were calculated for each GA. RESULTS The sonographic visualization rate of the fetal anal sphincter increased with gestational age, plateauing at 90-100% between 23-34 weeks of gestation. There was a significant positive relationship between fetal anal sphincter diameter and GA, which was best described by the equation: anal sphincter diameter (mm) = - 0.014 x GA(2) + 1.107 x GA - 11.664 (R(2) = 0.62). CONCLUSION We have provided reference values for the in-utero development of the fetal anal sphincter throughout gestation.
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Affiliation(s)
- M H Moon
- Department of Radiology, Cheil General Hospital & Women's Healthcare Center, Kwandong University College of Medicine, Seoul, Korea
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Kim HJ, Kim MY, Hwang JS, Kim HJ, Lee JH, Chang KC, Kim JH, Han CW, Kim JH, Seo HG. PPARdelta inhibits IL-1beta-stimulated proliferation and migration of vascular smooth muscle cells via up-regulation of IL-1Ra. Cell Mol Life Sci 2010; 67:2119-30. [PMID: 20221783 DOI: 10.1007/s00018-010-0328-4] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [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: 07/17/2009] [Revised: 02/07/2010] [Accepted: 02/19/2010] [Indexed: 11/26/2022]
Abstract
Activation of peroxisome proliferator-activated receptor (PPAR) delta by GW501516, a specific PPARdelta ligand, significantly inhibited interleukin (IL)-1beta-induced proliferation and migration of vascular smooth muscle cells (VSMCs). This effect of GW501516 was dependent on transforming growth factor-beta, and was mediated through the up-regulation of IL-1 receptor antagonist. The inhibitory effect of GW501516 on VSMC proliferation was associated with cell cycle arrest at the G1 to S phase transition, which was accompanied by the induction of p21 and p53 along with decreased cyclin-dependent kinase 4 expression. Inhibition of cell migration by GW501516 was associated with the down-regulation of matrix metalloproteinase (MMP)-2 and MMP-9 in IL-1beta-treated VSMCs. Inhibition of extracellular signal-regulated kinase significantly reduced the GW501516-mediated inhibition of IL-1beta-stimulated VSMC proliferation. These results suggest that PPARdelta plays an important role in the pathophysiology of diseases associated with the proliferation and migration of VSMCs.
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Affiliation(s)
- H J Kim
- Department of Pharmacology, Gyeongsang Institute of Health Science, Gyeongsang National University School of Medicine, 92 Chilam-Dong, Jinju, 660-751, Korea
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Jeong WK, Kim KW, Kim MY, Shin YM, Kim PN, Kim Y, Song GW, Ha TY, Hwang S, Lee SG. Increase of modified retrograde to antegrade flow ratio on doppler ultrasounds of the hepatic vein indicating tricuspid regurgitation during follow-up of liver transplantation: correlation with echocardiographic results. Transplant Proc 2009; 41:4238-42. [PMID: 20005376 DOI: 10.1016/j.transproceed.2009.07.110] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2008] [Accepted: 07/28/2009] [Indexed: 11/15/2022]
Abstract
The purpose of this study was to explore the best parameter of hepatic vein (HV) Doppler ultrasounds (DUS) that correlated with echocardiographic findings of and particularly the optimal cutoff value for tricuspid regurgitation (TR) following liver transplantation (LT). Thirty-six patients underwent echocardiography and DUS after LT from January 2006 to July 2007. Echocardiographic records were searched for TR grade and peak velocity of TR flow. The HV DUS parameters included peak velocity of retrograde flow (R), peak velocity of antegrade flow (A), the difference between R and A (R-A), the ratio of R to A (R/A ratio), and a modified R/A ratio, namely, the product of the R/A ratio and the R/A duration ratio. Correlation tests and receiver-operator characteristic analyses explored their interrelations and to obtained cutoff values to diagnose moderate and severe TR. TR grade best correlated with the modified R/A ratio (rho = 0.585), followed by the R/A ratio (rho = 0.503) and R (rho = 0.455). The modified R/A ratio was the most accurate parameter for the diagnosis of moderate and severe TR (Az = 0.825 and 0.895, respectively); its cutoff value was > or =0.11 for moderate TR (sensitivity and specificity both 77.78%) and 0.13 for severe TR (sensitivity, 100%; specificity, 81.2%). The modified R/A ratio best correlated with echocardiographic results of TR, although the strength of correlation was only moderate. Additionally, the modified R/A ratio was an accurate DUS parameter to diagnose moderate and severe TR among patients following LT.
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Affiliation(s)
- W K Jeong
- Department of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 138-736, Korea
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Han JY, Yang JH, Chung JH, Choi JS, Ahn HK, Ryu HM, Kim MY, Cho SI, Nava-Ocampo AA. Teratogen risk counselling by internet: A prospective cohort study. J OBSTET GYNAECOL 2009; 25:427-31. [PMID: 16183573 DOI: 10.1080/01443610500160584] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Although the internet may play a role in providing proper teratogen-risk counselling for pregnant women, the experience with this type of service has not been reported. We aimed to compare the pregnancy outcome of women counselled by the internet to women that received typically in-clinic teratogen risk counselling in the clinic. In a prospective cohort design, 1,011 patients were counselled in the clinic and 235 patients were counselled via the internet. Teratogen risk counselling was provided according with the information obtained from medical literature and specialised software. Information about pregnancy outcome (delivery, spontaneous abortion, or termination of pregnancy and major malformations) was obtained from 903 (89.3%) patients from the clinic group and 141 (60%) from the internet group. The amount of alcohol, cigarettes smoked, and millirads of X-ray were greater ( p < 0.05) in patients counselled by internet than in clinic. The rate of deliveries, ongoing pregnancies, pregnancy terminations, and spontaneous abortions were similar between clinic and internet (chi2 = 1.32; p = 0.7). Of 498 babies born to mothers counselled in the clinic, major malformations were identified in 3.6%. Of 67 babies born to mothers counselled by internet, major malformations were present in 1.5% ( p = 0.6). Teratogen-risk counselling by internet and clinic seems to have a similar efficacy in pregnancy outcome.
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Affiliation(s)
- J-Y Han
- Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, Samsung Cheil Hospital & Women's Health Care Centre, Sungkyunkwan University School of Medicine, Seoul, Korea.
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Cho YJ, Han JY, Choi JS, Ahn HK, Ryu HM, Kim MY, Yang JH, Nava-Ocampo AA, Koren G. Prenatal multivitamins containing folic acid do not decrease prevalence of depression among pregnant women. J OBSTET GYNAECOL 2009; 28:482-4. [PMID: 18850419 DOI: 10.1080/01443610802196658] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Several studies have reported an association between depression and folic acid deficiency. We investigated whether intake of prenatal multivitamins containing folic acid (MVandFA) was associated with decreased rates of depression among pregnant women. A questionnaire was given to 1,314 low-risk pregnant women. Of them, 1,277 (97.2%) women completed the questionnaire. The overall prevalence of depression was 8.1%. Of 652 participants who did not take MVandFA, 9.4% had depression, whereas 6.9% of 624 women who had MVandFA had depression (p = 0.11). In a multivariate logistic regression analysis, family history of depression (adjusted OR 3.7; 95% CI 1.9-7.3) and premenstrual syndrome (adjusted OR 3.0, 95% CI 1.8-4.8) were identified as risk factors for depression during pregnancy. In conclusion, intake of MVandFA was not associated with lower rates of depression during pregnancy whereas family history of depression and personal history of premenstrual syndrome were significant risk factors.
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Affiliation(s)
- Y J Cho
- Department of Obstetrics and Gynecology, Cheil Hospital and Women's Healthcare Center, Sungkyunkwan University, School of Medicine, Seoul, Korea
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Kim MY, Rha SE, Oh SN, Lee YJ, Byun JY, Jung CK, Kang WK. Case report. Lipomatous haemangiopericytoma (fat-forming solitary fibrous tumour) involving the perineum: CT and MRI findings and pathological correlation. Br J Radiol 2009; 82:e23-6. [PMID: 19168684 DOI: 10.1259/bjr/26727658] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Lipomatous haemangiopericytoma (a fat-forming solitary fibrous tumour) is a rare soft-tissue tumour histologically characterized by haemangiopericytomatous vasculature and the presence of mature adipocytes. We report the CT and MRI findings of a case of lipomatous haemangiopericytoma involving the perineum. CT showed a well-circumscribed soft-tissue density mass containing a small area of fat density and a punctuate calcification. On MR images, the mass was mostly isointense to the muscle on T(1) weighted images, with heterogeneous signal intensity on T(2) weighted images, and showed strong contrast enhancement except for the fatty and dense collagenous components. This is the first case report of imaging findings of a lipomatous haemangiopericytoma in the radiological literature. Although rare, lipomatous haemangiopericytoma should be considered as a differential diagnosis of fat-containing, hypervascular soft-tissue tumours with variable signal intensity on T(2) weighted images.
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Affiliation(s)
- M Y Kim
- Department of Radiology, Kangnam St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seocho-Ku, Seoul, South Korea
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Jin DI, Kenji N, Han RX, Choi SM, Kim MY, Park CS. 36 TREATMENT OF PORCINE FETAL FIBROBLASTS WITH DNA METHYLATION INHIBITORS OR HISTONE DEACETYLATION INHIBITORS IMPROVES DEVELOPMENT OF NUCLEAR TRANSFER EMBRYOS. Reprod Fertil Dev 2009. [DOI: 10.1071/rdv21n1ab36] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Epigenetic status of the genome of a donor nucleus has an important effect on the developmental potential of cloned embryos produced by somatic cell nuclear transfer (SCNT). DNA methylation inhibitors [such as 5-aza-2′-deoxyctidine (5-aza-dC), zebularine, and RG108] and histone deacetylase inhibitors [such as trichostatin A (TSA), sodium butyrate (NaBu), and scriptaid (SCR)] have been widely used for the alteration of the levels of the epigenetic modification of somatic cells. This study was designed to investigate the DNA methylation status of porcine fetal fibroblast cells treated with TSA or 5-aza-dC and to determine whether treatments with DNA methylation inhibitors or histone deacetylation inhibitors could improve the in vitro development of porcine reconstructed embryos. When the levels of DNA methylation in the PRE-1 sequence (repeat sequence in a euchromatic region) were examined by bisulfite sequencing following treatment of porcine fetal fibroblast cells with TSA or 5-aza-dC for 1 h, DNA methylation was decreased in 5-nm or 50-nm concentrations even if they were not significantly different. To evaluate the effect of DNA methylation inhibitors and histone deacetylation inhibitors on development of porcine nuclear transfer embryos, porcine fetal fibroblast cells were treated with 5 nm of 5-aza-dC, zebularine, or RG108 for 1 h, or with 50 nm of TSA, NaBu, or SCR for 1 h, or treated with both 50 nm TSA and 5 nm 5-aza-dC for 1 h before NT. The reconstructed embryos were electrically fused and cultured in PZM-3 for 6 days. Developmental rates of the reconstructed embryos from donor cells treated with 5-aza-dC, zebularine, or RG-108 to blastocysts significantly increased compared to the control group (21.4, 23.3, and 22.1 v. 12.3%). Blastocyst rates of the reconstructed embryos from donor cells treated with TSA, SCR, and NaBu also were significantly improved compared to the control group (30.0, 23.9, and 22.4 v. 14.5%), and TSA treatment was the highest in blastocyst rates among the treated groups. However, the development rate to the blastocyst stage was not affected when the combination of TSA and 5-aza-dC was treated. In conclusion, treatment of donor cells with DNA methylation inhibitors or histone deacetylase inhibitors improved the subsequent blastocyst development of porcine reconstructed embryos even though combined treatment with both inhibitors had no beneficial effect.
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Kim MY, Rha SE, Oh SN, Lee YJ, Jung ES, Byun JY. Case report: Ovarian cavernous haemangioma presenting as a heavily calcified adnexal mass. Br J Radiol 2008; 81:e269-71. [PMID: 18941040 DOI: 10.1259/bjr/21920101] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Haemangioma is an extremely rare tumour of the ovary. We describe the CT and MRI findings of a heavily calcified ovarian haemangioma in a 69-year-old woman presenting with adnexal torsion. CT showed a well-circumscribed mass with extensive punctate calcifications, located posterior to the uterus. MR images showed dark signal intensities of the mass on both T(1) and T(2) weighted images, with poor enhancement of the mass on contrast-enhanced T(1) weighted images. MR images also demonstrated a beak-like protrusion from the adnexal mass, representing the adnexal torsion. This is the first case report of a heavily calcified ovarian haemangioma in the English literature. Although rare, ovarian haemangioma should be included in the differential diagnosis of a heavily calcified adnexal mass.
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Affiliation(s)
- M Y Kim
- Department of Radiology, Catholic University of Korea, College of Medicine, Seocho-Ku, Seoul, Korea
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Ahn HK, Choi JS, Han JY, Kim MH, Chung JH, Ryu HM, Kim MY, Yang JH, Koong MK, Nava-Ocampo AA, Koren G. Pregnancy outcome after exposure to oral contraceptives during the periconceptional period. Hum Exp Toxicol 2008; 27:307-13. [PMID: 18684801 DOI: 10.1177/0960327108092290] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
To evaluate whether periconceptional exposure to oral contraceptives (OCs) increased adverse pregnancy outcomes, 136 pregnant women taking OCs within the periconceptional period were identified at the Korean Motherisk Program. Of them, 120 pregnant women accepted to participate in their study and were followed up until completion of the pregnancy. A control group of 240 age- and gravidity-matched pregnant women exposed to non-teratogen drugs for at least 1 month before pregnancy was also included. The median gestational age at delivery was 39.1 (27.0-41.0) weeks in the exposed group and 39.3 (27.4-42.0) weeks in the control group (P = 0.19). In the exposed group, 7.1% of babies were born with low birth weight versus 2.6% in the control group (P = 0.068). The number of preterm deliveries or babies born large for gestational age did not differ between the two groups. In the exposed group, the rate of birth defects was 3.2% (n = 3/99) versus 3.6% (n = 7/193) in the control group (P = 1.0). There were 15 women who took high doses of progesterone (emergency contraception) and no adverse fetal outcomes were observed. In conclusion, periconceptional exposure to OCs does not appear to increase the risk for adverse pregnancy outcomes.
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Affiliation(s)
- H K Ahn
- The Korean Motherisk Program, Cheil Hospital and Women's Health-care Center, Kwandong University College of Medicine, Seoul, Korea
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Lee SW, Kim MY, Yang JH, Moon MH, Cho JY. Sonographic findings of uterine sacculation during pregnancy. Ultrasound Obstet Gynecol 2008; 32:595-597. [PMID: 18726934 DOI: 10.1002/uog.6118] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
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Rivera TL, Izmirly PM, Birnbaum BK, Byrne P, Brauth JB, Katholi M, Kim MY, Fischer J, Clancy RM, Buyon JP. Disease progression in mothers of children enrolled in the Research Registry for Neonatal Lupus. Ann Rheum Dis 2008; 68:828-35. [PMID: 18625627 DOI: 10.1136/ard.2008.088054] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
OBJECTIVE To evaluate autoimmune disease progression in asymptomatic and pauci-symptomatic mothers of children with neonatal lupus (NL). METHODS Clinical information on mothers enrolled in the Research Registry for NL (RRNL) was obtained from medical records. Genotyping was performed for -308A/G tumour necrosis factor (TNF)alpha, 869T/C transforming growth factor (TGF)beta and -889C/T interleukin (IL)1alpha. RESULTS Of the 321 mothers enrolled, 229 had at least 6 months of follow-up. Of the 51 mothers who were asymptomatic at the NL child's birth, 26 progressed: 12 developed pauci-undifferentiated autoimmune syndrome (pauci-UAS), 2 poly-UAS, 7 SS, 4 SLE and 1 SLE/SS. The median time to develop any symptom was 3.15 years. Of the 37 mothers classified as pauci-UAS at the NL child's birth, 16 progressed: 5 developed poly-UAS, 6 Sjögren syndrome (SS), 4 systemic lupus erythematosus (SLE) and 1 SLE/SS. Of the pauci-UAS mothers enrolled within 1 year, the median time to progression was 6.7 years. Four mothers developed lupus nephritis (two asymptomatic, two pauci-UAS). The probability of an asymptomatic mother developing SLE by 10 years was 18.6%, and developing probable/definite SS was 27.9%. NL manifestations did not predict disease progression in an asymptomatic mother. Mothers with anti-Sjögren syndrome A antigen (SSA/)Ro and anti-Sjögren syndrome B antigen (SSB)/La were nearly twice as likely to develop an autoimmune disease as mothers with anti-SSA/Ro only. Only TGFbetaT/T was significantly higher in SLE mothers compared to asymptomatic mothers (p = 0.03). CONCLUSIONS Continued follow-up of asymptomatic NL mothers is warranted since nearly half progress, albeit few develop SLE. While the anti-SSB/La antibodies may be a risk factor for progression, further work is needed to determine reliable biomarkers in otherwise healthy women with anti-SSA/Ro antibodies identified solely because of an NL child.
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Affiliation(s)
- T L Rivera
- New York University School of Medicine, New York, 10016, USA.
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Lee MS, Kang MJ, Kim MY, Kim HO, Song KY, Park YM. Congenital Bednar tumour (pigmented dermatofibrosarcoma protuberans). J Eur Acad Dermatol Venereol 2008; 22:509-11. [DOI: 10.1111/j.1468-3083.2007.02373.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Van K, Onoda S, Kim MY, Kim KD, Lee SH. Allelic variation of the Waxy gene in foxtail millet [Setaria italica (L.) P. Beauv.] by single nucleotide polymorphisms. Mol Genet Genomics 2007; 279:255-66. [PMID: 18157676 DOI: 10.1007/s00438-007-0310-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2007] [Accepted: 11/28/2007] [Indexed: 11/29/2022]
Abstract
The Waxy (Wx) gene product controls the formation of a straight chain polymer of amylose in the starch pathway. Dominance/recessiveness of the Wx allele is associated with amylose content, leading to non-waxy/waxy phenotypes. For a total of 113 foxtail millet accessions, agronomic traits and the molecular differences of the Wx gene were surveyed to evaluate genetic diversities. Molecular types were associated with phenotypes determined by four specific primer sets (non-waxy, Type I; low amylose, Type VI; waxy, Type IV or V). Additionally, the insertion of transposable element in waxy was confirmed by ex1/TSI2R, TSI2F/ex2, ex2int2/TSI7R and TSI7F/ex4r. Seventeen single nucleotide polymorphims (SNPs) were observed from non-coding regions, while three SNPs from coding regions were non-synonymous. Interestingly, the phenotype of No. 88 was still non-waxy, although seven nucleotides (AATTGGT) insertion at 2,993 bp led to 78 amino acids shorter. The rapid decline of r (2) in the sequenced region (exon 1-intron 1-exon 2) suggested a low level of linkage disequilibrium and limited haplotype structure. K (s) values and estimation of evolutionary events indicate early divergence of S. italica among cereal crops. This study suggested the Wx gene was one of the targets in the selection process during domestication.
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Affiliation(s)
- K Van
- Department of Plant Science, Seoul National University, San 56-1, Sillim-dong, Gwanak-gu, Seoul, 151-921, The Republic of Korea
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Choi JS, Han JY, Kim MY, Velázquez-Armenta EY, Nava-Ocampo AA. Pregnancy outcomes in women using inhaled fluticasone during pregnancy: a case series. Allergol Immunopathol (Madr) 2007; 35:239-42. [PMID: 18047814 DOI: 10.1157/13112989] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [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: 11/21/2022]
Abstract
BACKGROUND The aim of the study was to report the maternal and fetal outcomes of women with respiratory illnesses who were treated with inhaled fluticasone during pregnancy. MATERIAL AND METHODS We identified 12 cases treated with inhaled fluticasone during pregnancy out of women who received obstetric and teratogen-risk evaluation at the Korean Motherisk Program. A detailed medical and obstetric history was obtained and cases were followed-up until either spontaneous or voluntary pregnancy termination or delivery occurred. RESULTS None of the participants had any obstetric complication. However, in addition to fluticasone, most of the 12 cases were simultaneously exposed to a variety of medications. There were 3 abortions (one spontaneous and 2 requested by the patients arguing personal reasons). Live born babies without any evidence of major congenital malformations included 8 singleton babies and 2 twins. Of them, 3 babies were born prematurely. CONCLUSIONS Our results are in agreement with previous large studies where no increased rate of adverse outcomes was reported with the use of inhaled corticosteroids during pregnancy.
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Affiliation(s)
- J S Choi
- The Korean Motherisk Program. Division of Maternal-Fetal Medicine. Department of Obstetrics and Gynecology. Cheil General Hospital and Women's Healthcare Center. Kwandong University College of Medicine. Seoul. Korea
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Affiliation(s)
- S-W Oh
- Department of Dermatology and Cutaneous Biology Research Institute, Yonsei University College of Medicine, Yongdong Severance Hospital, 146-92 Dogok-dong, Kangnam-gu, Seoul 135-720, Korea
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Hong EH, Kim MY, Park JE, Lee MH, Oh JM, Shin WG. Efficacy and safety of abciximab in combination with cilostazol in patients undergoing stenting. Int J Clin Pharmacol Ther 2007; 45:355-65. [PMID: 17595893 DOI: 10.5414/cpp45355] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [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: 11/18/2022] Open
Abstract
OBJECTIVE To evaluate the short- and long-term efficacy and safety of abciximab and cilostazol in patients with acute MI and unstable angina undergoing intracoronary stenting. METHODS Acute-phase (7 and 30 days), 6-month and long-term composite outcomes involving death, myocardial infarction or urgent target vessel revascularization (TVR) together with other outcomes (composite outcomes involving death, MI and elective TVR with restenosis and stroke) were evaluated retrospectively in a total of 175 patients. Safety outcomes were assessed using data on the incidence of bleeding and thrombocytopenia at Day 7 and Day 30. RESULTS Of 175 patients, 83 (47.4%) patients received abciximab. At 7 and 30 days, the composite outcome for the group treated with cilostazol alone and that treated with abciximab in combination with cilostazol did not differ significantly. The composite outcomes at 6 months and 1 year were significantly lower in the abciximab plus cilostazol group (relative risk 0.35, 95% Cl 0.13 - 0.90, relative risk 0.28, 95% CI 0.10 -0.78, respectively). The incidence of major bleeding at the access-site and in the gastrointestinal tract and minor bleeding were significantly higher in the group receiving abciximab plus cilostazol group at 7 days (relative risk 3.33, 95% CI 1.66 - 6.65, relative risk 9.98, 95% CI 1.29 - 77.07, relative risk 1.96, 95% CI 1.06 - 3.62, respectively) and at 30 days (relative risk 3.33, 95% CI 1.66 - 6.65, relative risk 5.54, 95% CI 1.25 - 24.56, relative risk 1.96, 95% CI 1.06 - 3.62, respectively). CONCLUSION The combination of abciximab and cilostazol showed an improvement in major cardiac incidents at 6 months and 1 year of the treatment when compared to the group receiving cilostazol alone. However, abciximab did not improve the incidence of death but increased the risk of bleeding complications.
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Affiliation(s)
- E H Hong
- Department of Pharmacy, Sejong Hospital, Gyeonggi-do, Korea
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Abstract
BACKGROUND Although epidermal and dermal T cells play roles in the pathogenesis of fixed drug eruption (FDE), not much is known about keratinocyte death and its precise mechanism in FDE. OBJECTIVES Our aim is to elucidate the mechanism that underlies keratinocyte death in FDE, that is, the role of apoptosis and its signalling pathway. METHODS We first examined the involvement of apoptosis in the active FDE lesions by terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick end-labelling (TUNEL) assay and immunohistochemical analysis of caspase-3. We then examined the expressions of Fas and Fas ligand (FasL) to deduce the possible upstream signalling pathway of apoptosis, if apoptosis were involved. We finally characterized the infiltrated T-cell subpopulations in the active FDE lesions. RESULTS In the active FDE lesions, TUNEL positivity was strongly observed in the basal keratinocytes, and also weakly observed in the upper dermal infiltrates as well as in a few keratinocytes in the granular layer. The distribution of TUNEL-positive cells was similar to that of the strong staining of active capase-3. Fas was found mainly in the keratinocytes and some infiltrated dermal cells, whereas FasL was identified predominantly in the intraepidermal and dermal infiltrated cells and in some basal keratinocytes. Overlapping expression of Fas and FasL was accompanied by apoptosis in the FDE lesions. Many of the infiltrated mononuclear cells were CD8+. Perforin was rarely observed in the FDE lesions. CONCLUSIONS These findings suggest that apoptosis of the keratinocyte is highly likely to be involved in the pathogenesis of FDE, and this cytotoxicity might be predominantly mediated by the FasL of the infiltrating CD8+ T cells, possibly also playing an inflammatory role.
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Affiliation(s)
- H J Choi
- Department of Dermatology, Kangnam St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seocho-gu, Seoul, Korea
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Lee JW, Kim MY, Kim YJ, Suh CH. CT of acute lower GI bleeding in chronic cholecystitis: concomitant pseudoaneurysm of cystic artery and cholecystocolonic fistula. Clin Radiol 2006; 61:634-6. [PMID: 16784952 DOI: 10.1016/j.crad.2006.02.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2006] [Accepted: 02/22/2006] [Indexed: 11/21/2022]
Affiliation(s)
- J W Lee
- Department of Radiology, Inha University College of Medicine, Inha University Hospital, Sinheung-dong, Jung-gu, Incheon City, South Korea
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Bae SN, Kim J, Lee YS, Kim JD, Kim MY, Park LO. Cytotoxic effect of zinc-citrate compound on choriocarcinoma cell lines. Placenta 2006; 28:22-30. [PMID: 16503348 DOI: 10.1016/j.placenta.2006.01.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2005] [Revised: 12/14/2005] [Accepted: 01/05/2006] [Indexed: 11/17/2022]
Abstract
This study investigated the cytotoxic effect of zinc-citrate compound (CIZAR) on choriocarcinoma cell lines. Primary cultured normal trophoblast cells (NPT), human tumorigenic poorly differentiated trophoblast cell line (HT), and choriocarcinoma cell line (BeWo) were exposed to different concentrations of CIZAR and cultured at different times. Cell viability was determined by CCK-8 assay. The effects on cell cycle progression, population distribution and apoptotic incidence were determined by flow cytometry. The appearance of apoptosis was confirmed by DNA laddering and DAPI staining. The quantitative analysis of telomerase was measured by TRAPeze telomerase detection kit. The molecular mechanism of CIZAR-induced apoptosis was examined with Western blot analysis and colorimetric caspase-3 activity assay. In in vitro condition, CIZAR had a selective cytotoxic effect on choriocarcinoma cell line in dose- and time-dependent patterns. Flow cytometric analysis, DNA laddering, and DAPI staining indicated that BeWo cells only have been induced apoptosis by CIZAR. Shortening of telomere was also observed only in BeWo cells. Results also displayed that CIZAR-induced apoptosis involves the up-regulation of p21(WAF1) and Bax protein and down-regulation of Bcl-2 which were accompanied by the activation of caspase-3. Taken together, our results suggest that CIZAR is an apoptotic inducer in malignant trophoblast cells (BeWo).
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Affiliation(s)
- S N Bae
- Department of Obstetrics and Gynecology, Division of Gynecologic Oncology, Kangnam St. Mary's Hospital, The Catholic University of Korea, College of Medicine, Seoul 137-040, South Korea.
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Lee BS, Kim MY, Wang RRC, Waldron BL. Relationships among 3 Kochia species based on PCR-generated molecular sequences and molecular cytogenetics. Genome 2006; 48:1104-15. [PMID: 16391679 DOI: 10.1139/g05-070] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Forage kochia (Kochia prostrata ssp. virescens 'Immigrant' is native to the arid and semiarid regions of central Eurasia. It was introduced into the United States in 1966 as PI 314929 and released as a perennial forage shrub in 1984. Kochia americana is a perennial native to the United States, whereas Kochia scorparia is an introduced annual species that became a weed. To assess both the breeding potential and the possibility of genetic contamination, relationships among the 3 Kochia species were analyzed using random amplified polymorphic DNA (RAPD) markers, sequence tagged site (STS) marker sequences of the chloroplast NADH dehydrogenase gene (ndhF), genomic in situ hybridization (GISH), and multicolor fluorescence in situ hybridization (MC-FISH). Seventy decamer random primers yielded 458 polymorphic bands from 9 plants of K. americana, 20 plants of K. prostrata, and 7 plants of K. scoparia. Fifty-four and 55 species-specific RAPD markers were identified for K. americana and K. prostrata, whereas 80 RAPD markers were specific to K. scoparia. Based on the presence or absence of informative RAPD markers, the 3 species always grouped into 3 distinct clusters in a NTSYSpc2.01b-generated dendrogram. The same relationships were found among the 3 Kochia species based on ndhF DNA sequence divergence. Using a set of 7 STS markers that can identify each Kochia species, we did not find a single interspecific hybrid from artificial hybridizations among the 3 Kochia species. In GISH studies, chromosomes of 1 species fluoresced in green only when they were probed by genomic DNA of the same species. Cross-hybridization by genomic DNA of another species was not observed. In FISH studies using pTa71 (for 18S-5.8S-26S rDNAs) and pScT7 (for 5S rDNA) as probes, there were 1, 1 and 3 pTa71 sites and 2, 1, and 1 pScT7 sites in each haplome of K. prostrata, K. americana, and K. scoparia, respectively. It is concluded that these 3 Kochia species are so genomically distinct that gene introgression among them would be extremely rare.
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Affiliation(s)
- B S Lee
- Department of Biology, School of Natural Sciences, Jeonju University, Republic of Korea
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Van K, Hwang EY, Kim MY, Park HJ, Lee SH, Cregan PB. Discovery of SNPs in soybean genotypes frequently used as the parents of mapping populations in the United States and Korea. J Hered 2005; 96:529-35. [PMID: 15994422 DOI: 10.1093/jhered/esi069] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [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: 12/12/2022] Open
Abstract
Single nucleotide polymorphisms (SNPs) including insertion/deletions (indels) serve as useful and informative genetic markers. The availability of high-throughput and inexpensive SNP typing systems has increased interest in the development of SNP markers. After fragments of genes were amplified with primers derived from 110 soybean GenBank ESTs, sequencing data of PCR products from 15 soybean genotypes from Korea and the United States were analyzed by SeqScape software to find SNPs. Among 35 gene fragments with at least one SNP among the 15 genotypes, SNPs occurred at a frequency of 1 per 2,038 bp in 16,302 bp of coding sequence and 1 per 191 bp in 16,960 bp of noncoding regions. This corresponds to a nucleotide diversity (theta) of 0.00017 and 0.00186, respectively. Of the 97 SNPs discovered, 78 or 80.4% were present in the six North American soybean mapping parents. The addition of "Hwaeomputkong," which originated from Japan, increased the number to 92, or 94.8% of the total number of SNPs present among the 15 genotypes. Thus, Hwaeomputkong and the six North American mapping parents provide a diverse set of soybean genotypes that can be successfully used for SNP discovery in coding DNA and closely associated introns and untranslated regions.
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Affiliation(s)
- K Van
- Department of Plant Science, Seoul National University, Seoul 151-921, Republic of Korea
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