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Kim D, Ko HY, Chung JI, Park YM, Lee S, Kim SY, Kim J, Chun JH, Han KS, Lee M, Ju YH, Park SJ, Park KD, Nam MH, Kim SH, Shim JK, Park Y, Lim H, Park J, Lee GH, Kim H, Kim S, Park U, Ryu H, Lee SY, Park S, Kang SG, Chang JH, Lee CJ, Yun M. Visualizing cancer-originating acetate uptake through monocarboxylate transporter 1 in reactive astrocytes in the glioblastoma tumor microenvironment. Neuro Oncol 2024; 26:843-857. [PMID: 38085571 PMCID: PMC11066945 DOI: 10.1093/neuonc/noad243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2024] Open
Abstract
BACKGROUND Reactive astrogliosis is a hallmark of various brain pathologies, including neurodegenerative diseases and glioblastomas. However, the specific intermediate metabolites contributing to reactive astrogliosis remain unknown. This study investigated how glioblastomas induce reactive astrogliosis in the neighboring microenvironment and explore 11C-acetate PET as an imaging technique for detecting reactive astrogliosis. METHODS Through in vitro, mouse models, and human tissue experiments, we examined the association between elevated 11C-acetate uptake and reactive astrogliosis in gliomas. We explored acetate from glioblastoma cells, which triggers reactive astrogliosis in neighboring astrocytes by upregulating MAO-B and monocarboxylate transporter 1 (MCT1) expression. We evaluated the presence of cancer stem cells in the reactive astrogliosis region of glioblastomas and assessed the correlation between the volume of 11C-acetate uptake beyond MRI and prognosis. RESULTS Elevated 11C-acetate uptake is associated with reactive astrogliosis and astrocytic MCT1 in the periphery of glioblastomas in human tissues and mouse models. Glioblastoma cells exhibit increased acetate production as a result of glucose metabolism, with subsequent secretion of acetate. Acetate derived from glioblastoma cells induces reactive astrogliosis in neighboring astrocytes by increasing the expression of MAO-B and MCT1. We found cancer stem cells within the reactive astrogliosis at the tumor periphery. Consequently, a larger volume of 11C-acetate uptake beyond contrast-enhanced MRI was associated with a worse prognosis. CONCLUSIONS Our results highlight the role of acetate derived from glioblastoma cells in inducing reactive astrogliosis and underscore the potential value of 11C-acetate PET as an imaging technique for detecting reactive astrogliosis, offering important implications for the diagnosis and treatment of glioblastomas.
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Affiliation(s)
- Dongwoo Kim
- Department of Nuclear Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Hae Young Ko
- Department of Nuclear Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jee-In Chung
- Department of Nuclear Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Yongmin Mason Park
- Center for Cognition and Sociality, Institute for Basic Science, Daejeon, Republic of Korea
- IBS School, University of Science and Technology, Daejeon, Republic of Korea
| | - Sangwon Lee
- Department of Nuclear Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Seon Yoo Kim
- Department of Nuclear Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jisu Kim
- Department of Nuclear Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Joong-Hyun Chun
- Department of Nuclear Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Kyung-Seok Han
- Department of Biological Sciences, Chungnam National University, Daejeon, Republic of Korea
| | - Misu Lee
- Division of Life Science, College of Life Science and Bioengineering, Incheon National University, Incheon, Republic of Korea
| | - Yeon Ha Ju
- Center for Cognition and Sociality, Institute for Basic Science, Daejeon, Republic of Korea
- IBS School, University of Science and Technology, Daejeon, Republic of Korea
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
| | - Sun Jun Park
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
- Division of Bio-Med Science & Technology, KIST School, Korea University of Science and Technology, Seoul, Republic of Korea
| | - Ki Duk Park
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
- Division of Bio-Med Science & Technology, KIST School, Korea University of Science and Technology, Seoul, Republic of Korea
| | - Min-Ho Nam
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
- Division of Bio-Med Science & Technology, KIST School, Korea University of Science and Technology, Seoul, Republic of Korea
- Department of KHU-KIST Convergence Science and Technology, Kyung Hee University, Seoul, Republic of Korea
| | - Se Hoon Kim
- Department of Pathology, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jin-Kyoung Shim
- Department of Neurosurgery, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Youngjoo Park
- Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Hyunkeong Lim
- Department of Nuclear Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jaekyung Park
- Department of Nuclear Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Gwan-Ho Lee
- Research Resources Division, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
| | - Hyunjin Kim
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
| | - Suhyun Kim
- K-Laboratory, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
| | - Uiyeol Park
- K-Laboratory, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
| | - Hoon Ryu
- K-Laboratory, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea
| | - So Yun Lee
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul, Republic of Korea
| | - Sunghyouk Park
- Natural Products Research Institute, College of Pharmacy, Seoul National University, Seoul, Republic of Korea
| | - Seok-Gu Kang
- Department of Neurosurgery, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jong Hee Chang
- Department of Neurosurgery, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - C Justin Lee
- IBS School, University of Science and Technology, Daejeon, Republic of Korea
| | - Mijin Yun
- Department of Nuclear Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
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Nam MH, Ko HY, Kim D, Lee S, Park YM, Hyeon SJ, Won W, Chung JI, Kim SY, Jo HH, Oh KT, Han YE, Lee GH, Ju YH, Lee H, Kim H, Heo J, Bhalla M, Kim KJ, Kwon J, Stein TD, Kong M, Lee H, Lee SE, Oh SJ, Chun JH, Park MA, Park KD, Ryu H, Yun M, Lee CJ. Visualizing reactive astrocyte-neuron interaction in Alzheimer's disease using 11C-acetate and 18F-FDG. Brain 2023; 146:2957-2974. [PMID: 37062541 PMCID: PMC10517195 DOI: 10.1093/brain/awad037] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 01/04/2023] [Accepted: 01/23/2023] [Indexed: 04/18/2023] Open
Abstract
Reactive astrogliosis is a hallmark of Alzheimer's disease (AD). However, a clinically validated neuroimaging probe to visualize the reactive astrogliosis is yet to be discovered. Here, we show that PET imaging with 11C-acetate and 18F-fluorodeoxyglucose (18F-FDG) functionally visualizes the reactive astrocyte-mediated neuronal hypometabolism in the brains with neuroinflammation and AD. To investigate the alterations of acetate and glucose metabolism in the diseased brains and their impact on the AD pathology, we adopted multifaceted approaches including microPET imaging, autoradiography, immunohistochemistry, metabolomics, and electrophysiology. Two AD rodent models, APP/PS1 and 5xFAD transgenic mice, one adenovirus-induced rat model of reactive astrogliosis, and post-mortem human brain tissues were used in this study. We further curated a proof-of-concept human study that included 11C-acetate and 18F-FDG PET imaging analyses along with neuropsychological assessments from 11 AD patients and 10 healthy control subjects. We demonstrate that reactive astrocytes excessively absorb acetate through elevated monocarboxylate transporter-1 (MCT1) in rodent models of both reactive astrogliosis and AD. The elevated acetate uptake is associated with reactive astrogliosis and boosts the aberrant astrocytic GABA synthesis when amyloid-β is present. The excessive astrocytic GABA subsequently suppresses neuronal activity, which could lead to glucose uptake through decreased glucose transporter-3 in the diseased brains. We further demonstrate that 11C-acetate uptake was significantly increased in the entorhinal cortex, hippocampus and temporo-parietal neocortex of the AD patients compared to the healthy controls, while 18F-FDG uptake was significantly reduced in the same regions. Additionally, we discover a strong correlation between the patients' cognitive function and the PET signals of both 11C-acetate and 18F-FDG. We demonstrate the potential value of PET imaging with 11C-acetate and 18F-FDG by visualizing reactive astrogliosis and the associated neuronal glucose hypometablosim for AD patients. Our findings further suggest that the acetate-boosted reactive astrocyte-neuron interaction could contribute to the cognitive decline in AD.
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Affiliation(s)
- Min-Ho Nam
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
- Department of KHU-KIST Convergence Science and Technology, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Hae Young Ko
- Department of Nuclear Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Dongwoo Kim
- Department of Nuclear Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Sangwon Lee
- Department of Nuclear Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Yongmin Mason Park
- Center for Cognition and Sociality, Institute for Basic Science, Daejeon 34126, Republic of Korea
- IBS School, University of Science and Technology, Daejeon 34126, Republic of Korea
| | - Seung Jae Hyeon
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Woojin Won
- Center for Cognition and Sociality, Institute for Basic Science, Daejeon 34126, Republic of Korea
| | - Jee-In Chung
- Department of Nuclear Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Seon Yoo Kim
- Department of Nuclear Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Han Hee Jo
- Department of Nuclear Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Kyeong Taek Oh
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Young-Eun Han
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Gwan-Ho Lee
- Research Resources Division, KIST, Seoul 02792, Republic of Korea
| | - Yeon Ha Ju
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
- Center for Cognition and Sociality, Institute for Basic Science, Daejeon 34126, Republic of Korea
- IBS School, University of Science and Technology, Daejeon 34126, Republic of Korea
| | - Hyowon Lee
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Hyunjin Kim
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
- Department of KHU-KIST Convergence Science and Technology, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Jaejun Heo
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Mridula Bhalla
- Center for Cognition and Sociality, Institute for Basic Science, Daejeon 34126, Republic of Korea
- IBS School, University of Science and Technology, Daejeon 34126, Republic of Korea
| | - Ki Jung Kim
- Center for Cognition and Sociality, Institute for Basic Science, Daejeon 34126, Republic of Korea
| | - Jea Kwon
- Center for Cognition and Sociality, Institute for Basic Science, Daejeon 34126, Republic of Korea
| | - Thor D Stein
- Boston University Alzheimer’s Disease Research Center and Department of Pathology, Chobanian and Avedisian Boston University School of Medicine, Boston, MA 02130, USA
| | - Mingyu Kong
- Molecular Recognition Research Center, KIST, Seoul 02792, Republic of Korea
| | - Hyunbeom Lee
- Molecular Recognition Research Center, KIST, Seoul 02792, Republic of Korea
| | - Seung Eun Lee
- Research Resources Division, KIST, Seoul 02792, Republic of Korea
| | - Soo-Jin Oh
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Joong-Hyun Chun
- Department of Nuclear Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Mi-Ae Park
- Department of Radiology, UT Southwestern Medical Center, Dallas, TX 75390, USA
| | - Ki Duk Park
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Hoon Ryu
- Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
- Boston University Alzheimer’s Disease Research Center and Department of Pathology, Chobanian and Avedisian Boston University School of Medicine, Boston, MA 02130, USA
| | - Mijin Yun
- Department of Nuclear Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - C Justin Lee
- Center for Cognition and Sociality, Institute for Basic Science, Daejeon 34126, Republic of Korea
- IBS School, University of Science and Technology, Daejeon 34126, Republic of Korea
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Kim S, Kim J, Park YM, Suh PG, Lee CJ. Visuosocial Preference Memory, but Not Avoidance Memory, Requires PLCγ1 in the CA2 Hippocampus. Exp Neurobiol 2022; 31:332-342. [DOI: 10.5607/en22033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 10/30/2022] [Accepted: 10/30/2022] [Indexed: 11/11/2022] Open
Affiliation(s)
- Sunpil Kim
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Korea
- Center for Cognition and Sociality, Institute for Basic Science (IBS), Daejeon 34126, Korea
| | - Jeongyeon Kim
- Emotion, Cognition and Behavior Research Group, Korea Brain Research Institute (KBRI), Daegu 41062, Korea
| | - Yongmin Mason Park
- Center for Cognition and Sociality, Institute for Basic Science (IBS), Daejeon 34126, Korea
- IBS School, University of Science and Technology (UST), Daejeon 34113, Korea
| | - Pann-Ghill Suh
- Korea Brain Research Institute (KBRI), Daegu 41062, Korea
| | - C. Justin Lee
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Korea
- Center for Cognition and Sociality, Institute for Basic Science (IBS), Daejeon 34126, Korea
- IBS School, University of Science and Technology (UST), Daejeon 34113, Korea
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4
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Kim D, Chun JH, Yi JH, Ko HY, Chung JI, Lee M, Park YM, Nam MH, Kim J, Kim SY, Park Y, Moon JH, Kang SG, Chang JH, Lee CJ, Kim SH, Yun M. 11 C-Acetate PET/CT Detects Reactive Astrogliosis Helping Glioma Classification. Clin Nucl Med 2022; 47:863-868. [PMID: 35868002 DOI: 10.1097/rlu.0000000000004341] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
PURPOSE 11 C-acetate ( 11 C-ACE) uptake on PET/CT was recently discovered to represent reactive astrocytes in the tumor microenvironment. This study aimed at evaluating the role of 11 C-ACE PET/CT as an imaging biomarker of reactive astrogliosis in characterizing different types of gliomas. METHODS In this prospective study, a total of 182 patients underwent 11 C-ACE PET/CT before surgery. The ratio of SUV max of a glioma to the SUV mean of the contralateral choroid plexus ( 11 C-ACE TCR) on PET/CT was calculated. 11 C-ACE TCRs were compared with the World Health Organization grades and isocitrate dehydrogenase 1 ( IDH1 ) mutation status. Grade 2 was considered low-grade tumor, and grades 3 and 4 were considered high-grade tumors. RESULTS The median 11 C-ACE TCR was significantly higher in IDH1 wild-type (wt) tumors (n = 91) than in IDH1 -mutant (mt) tumors (n = 91) (2.38 vs 1.30, P < 0.001). Of the 91 IDH1 -mt tumors, there were no differences in the median 11 C-ACE TCRs between oligodendrogliomas (ODs) and astrocytic tumors (1.40 vs 1.20, P > 0.05). In grading low- versus high-grade gliomas, the receiver operating characteristic curve analyses showed a higher area under the curve (0.951) in IDH1 -wt tumors than in IDH1 -mt tumors (0.783, P = 0.002). Grade 2 ODs were well differentiated from high-grade gliomas. The 11 C-ACE TCR of grade 3 ODs was significantly lower than that of IDH1 -wt glioblastomas. CONCLUSIONS High 11 C-ACE uptake is associated with high-grade IDH1 -wt tumors, thus facilitating differentiation from high-grade IDH1-mt and low-grade gliomas. In particular, low 11 C-ACE uptake in ODs is advantageous in overcoming the limitation of radiolabeled amino acid tracers.
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Affiliation(s)
| | | | - Ju Hyeon Yi
- Yonsei University College of Medicine, Seoul
| | | | | | - Misu Lee
- Division of Life Science, College of Life Science and Bioengineering, Incheon National University, Incheon
| | | | | | | | | | | | | | | | | | | | - Se Hoon Kim
- Pathology, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
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Ju YH, Bhalla M, Hyeon SJ, Oh JE, Yoo S, Chae U, Kwon J, Koh W, Lim J, Park YM, Lee J, Cho IJ, Lee H, Ryu H, Lee CJ. Astrocytic urea cycle detoxifies Aβ-derived ammonia while impairing memory in Alzheimer's disease. Cell Metab 2022; 34:1104-1120.e8. [PMID: 35738259 DOI: 10.1016/j.cmet.2022.05.011] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 03/31/2022] [Accepted: 05/26/2022] [Indexed: 11/03/2022]
Abstract
Alzheimer's disease (AD) is one of the foremost neurodegenerative diseases, characterized by beta-amyloid (Aβ) plaques and significant progressive memory loss. In AD, astrocytes are proposed to take up and clear Aβ plaques. However, how Aβ induces pathogenesis and memory impairment in AD remains elusive. We report that normal astrocytes show non-cyclic urea metabolism, whereas Aβ-treated astrocytes show switched-on urea cycle with upregulated enzymes and accumulated entering-metabolite aspartate, starting-substrate ammonia, end-product urea, and side-product putrescine. Gene silencing of astrocytic ornithine decarboxylase-1 (ODC1), facilitating ornithine-to-putrescine conversion, boosts urea cycle and eliminates aberrant putrescine and its toxic byproducts ammonia and H2O2 and its end product GABA to recover from reactive astrogliosis and memory impairment in AD. Our findings implicate that astrocytic urea cycle exerts opposing roles of beneficial Aβ detoxification and detrimental memory impairment in AD. We propose ODC1 inhibition as a promising therapeutic strategy for AD to facilitate removal of toxic molecules and prevent memory loss.
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Affiliation(s)
- Yeon Ha Ju
- Center for Cognition and Sociality, Institute for Basic Science (IBS), Daejeon, Republic of Korea; IBS School, University of Science and Technology (UST), Daejeon, Republic of Korea
| | - Mridula Bhalla
- Center for Cognition and Sociality, Institute for Basic Science (IBS), Daejeon, Republic of Korea; IBS School, University of Science and Technology (UST), Daejeon, Republic of Korea
| | - Seung Jae Hyeon
- Brain Science Institute (BSI), Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Ju Eun Oh
- Center for Advanced Biomolecular Recognition, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Seonguk Yoo
- Center for Advanced Biomolecular Recognition, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Uikyu Chae
- Brain Science Institute (BSI), Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
| | - Jea Kwon
- Center for Cognition and Sociality, Institute for Basic Science (IBS), Daejeon, Republic of Korea; Korea University-Korea Institute of Science and Technology, Graduate School of Convergence Technology, Korea University, Seoul, Republic of Korea
| | - Wuhyun Koh
- Center for Cognition and Sociality, Institute for Basic Science (IBS), Daejeon, Republic of Korea
| | - Jiwoon Lim
- Center for Cognition and Sociality, Institute for Basic Science (IBS), Daejeon, Republic of Korea; IBS School, University of Science and Technology (UST), Daejeon, Republic of Korea
| | - Yongmin Mason Park
- Center for Cognition and Sociality, Institute for Basic Science (IBS), Daejeon, Republic of Korea; IBS School, University of Science and Technology (UST), Daejeon, Republic of Korea
| | - Junghee Lee
- Boston University Alzheimer's Disease Research Center and Department of Neurology, Boston University School of Medicine, Boston, MA 02138, USA
| | - Il-Joo Cho
- Brain Science Institute (BSI), Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea; School of Electrical and Electronics Engineering, Yonsei University, Seoul, Republic of Korea; Yonsei-KIST Convergence Research Institute, Yonsei University, Seoul, Republic of Korea
| | - Hyunbeom Lee
- Center for Advanced Biomolecular Recognition, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Hoon Ryu
- Brain Science Institute (BSI), Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea.
| | - C Justin Lee
- Center for Cognition and Sociality, Institute for Basic Science (IBS), Daejeon, Republic of Korea; IBS School, University of Science and Technology (UST), Daejeon, Republic of Korea.
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Lee GY, Shin GW, Park HY, Yoon HK, Kim TH, Lee A, Heo YJ, Lee YJ, Han JY, Park YM. Sonographic Features of Breast Fibroepithelial Masses: Distinguishing Fibroadenoma from Phyllodes Tumour. Hong Kong Journal of Radiology 2022. [DOI: 10.12809/hkjr2217333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Affiliation(s)
- GY Lee
- Department of Radiology, Busan Paik Hospital, Inje University College of Medicine, South Korea
| | - GW Shin
- Department of Radiology, Busan Paik Hospital, Inje University College of Medicine, South Korea
| | - HY Park
- Department of Pathology, Busan Paik Hospital, Inje University College of Medicine, South Korea
| | - HK Yoon
- Department of Pathology, Busan Paik Hospital, Inje University College of Medicine, South Korea
| | - TH Kim
- Department of Surgery, Busan Paik Hospital, Inje University College of Medicine, South Korea
| | - A Lee
- Department of Surgery, Busan Paik Hospital, Inje University College of Medicine, South Korea
| | - YJ Heo
- Department of Radiology, Busan Paik Hospital, Inje University College of Medicine, South Korea
| | - YJ Lee
- Department of Radiology, Busan Paik Hospital, Inje University College of Medicine, South Korea
| | - JY Han
- Department of Radiology, Busan Paik Hospital, Inje University College of Medicine, South Korea
| | - YM Park
- Department of Radiology, Busan Paik Hospital, Inje University College of Medicine, South Korea
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7
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Park YM, Noh EM, Lee HY, Shin DY, Lee YH, Kang YG, Na EJ, Kim JH, Yang HJ, Kim MJ, Kim KS, Bae JS, Lee YR. Anti-diabetic effects of Protaetia brevitarsis in pancreatic islets and a murine diabetic model. Eur Rev Med Pharmacol Sci 2021; 25:7508-7515. [PMID: 34919253 DOI: 10.26355/eurrev_202112_27450] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE In this study, the antidiabetic efficacy of Protaetia brevitarsis in alloxan-treated pancreatic islets and db/db mice was investigated. P. brevitarsis was tested for alloxan-mediated cytotoxicity and nitric oxide production in mice pancreatic islets. MATERIALS AND METHODS The anti-diabetic effect of P. brevitarsis was also evaluated in db/db mice after 4 weeks of administration. Biochemical analysis, oral glucose tolerance test (OGTT), and pancreatic histological analysis were performed. RESULTS P. brevitarsis displayed hypoglycemic activity in alloxan-treated mice pancreatic islets. Our results showed that P. brevitarsis protects pancreatic islets from cytotoxicity. Moreover, daily oral supplementation with P. brevitarsis for 4 weeks reduced plasma glucose levels without affecting body weight and food intake, elevated glucose tolerance in OGTT, improved blood lipid parameters, inhibited fat accumulation, and restored islet structure of db/db mice. CONCLUSIONS The present study provided evidence for the anti‑diabetic effect of P. brevitarsis in alloxan-treated pancreatic islets and db/db mice. These results suggest that P. brevitarsis may be used as an adjunctive anti-diabetic agent or as a functional food.
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Affiliation(s)
- Y M Park
- INVIVO Co. Ltd., Iksan, Jeonbuk, Korea.
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Lee GY, Shin GW, Park HY, Yoon HK, Kim TH, Lee A, Heo YJ, Lee YJ, Han JY, Park YM. Predictive sonographic features for differentiation of breast fibroepithelial
tumors: fibroadenoma versus phyllodes tumor. Hong Kong Journal of Radiology 2021. [DOI: 10.12809/hkjr2117333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Affiliation(s)
- GY Lee
- Department of Radiology, Busan Paik Hospital, Inje University College of Medicine, Busan, South Korea
| | - GW Shin
- Department of Radiology, Busan Paik Hospital, Inje University College of Medicine, Busan, South Korea
| | - HY Park
- Department of Pathology, Busan Paik Hospital, Inje University College of Medicine, Busan, South Korea
| | - HK Yoon
- Department of Pathology, Busan Paik Hospital, Inje University College of Medicine, Busan, South Korea
| | - TH Kim
- Department of Surgery, Busan Paik Hospital, Inje University College of Medicine, Busan, South Korea
| | - A Lee
- Department of Surgery, Busan Paik Hospital, Inje University College of Medicine, Busan, South Korea
| | - YJ Heo
- Department of Radiology, Busan Paik Hospital, Inje University College of Medicine, Busan, South Korea
| | - YJ Lee
- Department of Radiology, Busan Paik Hospital, Inje University College of Medicine, Busan, South Korea
| | - JY Han
- Department of Radiology, Busan Paik Hospital, Inje University College of Medicine, Busan, South Korea
| | - YM Park
- Department of Radiology, Busan Paik Hospital, Inje University College of Medicine, Busan, South Korea
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Kwak H, Koh W, Kim S, Song K, Shin JI, Lee JM, Lee EH, Bae JY, Ha GE, Oh JE, Park YM, Kim S, Feng J, Lee SE, Choi JW, Kim KH, Kim YS, Woo J, Lee D, Son T, Kwon SW, Park KD, Yoon BE, Lee J, Li Y, Lee H, Bae YC, Lee CJ, Cheong E. Astrocytes Control Sensory Acuity via Tonic Inhibition in the Thalamus. Neuron 2020; 108:691-706.e10. [PMID: 32905785 DOI: 10.1016/j.neuron.2020.08.013] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 07/05/2020] [Accepted: 08/14/2020] [Indexed: 12/17/2022]
Abstract
Sensory discrimination is essential for survival. However, how sensory information is finely controlled in the brain is not well defined. Here, we show that astrocytes control tactile acuity via tonic inhibition in the thalamus. Mechanistically, diamine oxidase (DAO) and the subsequent aldehyde dehydrogenase 1a1 (Aldh1a1) convert putrescine into GABA, which is released via Best1. The GABA from astrocytes inhibits synaptically evoked firing at the lemniscal synapses to fine-tune the dynamic range of the stimulation-response relationship, the precision of spike timing, and tactile discrimination. Our findings reveal a novel role of astrocytes in the control of sensory acuity through tonic GABA release.
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Affiliation(s)
- Hankyul Kwak
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, South Korea
| | - Wuhyun Koh
- Division of Bio-Medical Science &Technology, KIST School, Korea University of Science and Technology, Seoul 02792, South Korea; Center for Glia-Neuron Interaction, Korea Institute of Science and Technology, Seoul 02792, South Korea; Center for Cognition and Sociality, Institute for Basic Science, Daejeon 34126, South Korea
| | - Sangwoo Kim
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, South Korea
| | - Kiyeong Song
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, South Korea
| | - Jeong-Im Shin
- Division of Bio-Medical Science &Technology, KIST School, Korea University of Science and Technology, Seoul 02792, South Korea; Center for Glia-Neuron Interaction, Korea Institute of Science and Technology, Seoul 02792, South Korea
| | - Jung Moo Lee
- Center for Glia-Neuron Interaction, Korea Institute of Science and Technology, Seoul 02792, South Korea; Center for Cognition and Sociality, Institute for Basic Science, Daejeon 34126, South Korea; KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, South Korea
| | - Elliot H Lee
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, South Korea
| | - Jin Young Bae
- Department of Anatomy and Neurobiology, School of Dentistry, Kyungpook National University, Daegu 41566, South Korea
| | - Go Eun Ha
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, South Korea
| | - Ju-Eun Oh
- Molecular Recognition Research Center, Korea Institute of Science and Technology, Seoul 02792, South Korea
| | - Yongmin Mason Park
- Division of Bio-Medical Science &Technology, KIST School, Korea University of Science and Technology, Seoul 02792, South Korea; Center for Glia-Neuron Interaction, Korea Institute of Science and Technology, Seoul 02792, South Korea; Center for Cognition and Sociality, Institute for Basic Science, Daejeon 34126, South Korea
| | - Sunpil Kim
- Center for Cognition and Sociality, Institute for Basic Science, Daejeon 34126, South Korea; KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, South Korea
| | - Jiesi Feng
- State Key Laboratory of Membrane Biology, Peking University School of Life Sciences, Beijing 100871, China
| | - Seung Eun Lee
- Virus Facility, Research Animal Resource Center, Korea Institute of Science and Technology, Seoul 02792, South Korea
| | - Ji Won Choi
- Convergence Research Center for Diagnosis, Treatment and Care System of Dementia, Korea Institute of Science and Technology, Seoul 02792, South Korea
| | - Ki Hun Kim
- Doping Control Center, Korea Institute of Science and Technology, Seoul 02792, South Korea
| | - Yoo Sung Kim
- Department of Molecular Biology, College of Natural Science, Dankook University, Cheonan 31116, South Korea
| | - Junsung Woo
- Center for Glia-Neuron Interaction, Korea Institute of Science and Technology, Seoul 02792, South Korea
| | - Dongsu Lee
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, South Korea
| | - Taehwang Son
- School of Electrical and Electronic Engineering, Yonsei University, Seoul 03722, South Korea
| | - Soon Woo Kwon
- Radiation Medicine Clinical Research Division, Korea Institute of Radiological and Medical Sciences, Seoul, South Korea
| | - Ki Duk Park
- Division of Bio-Medical Science &Technology, KIST School, Korea University of Science and Technology, Seoul 02792, South Korea; Convergence Research Center for Diagnosis, Treatment and Care System of Dementia, Korea Institute of Science and Technology, Seoul 02792, South Korea; KHU-KIST Department of Converging Science and Technology, Kyung Hee University, Seoul 02447, South Korea
| | - Bo-Eun Yoon
- Department of Molecular Biology, College of Natural Science, Dankook University, Cheonan 31116, South Korea
| | - Jaeick Lee
- Doping Control Center, Korea Institute of Science and Technology, Seoul 02792, South Korea
| | - Yulong Li
- State Key Laboratory of Membrane Biology, Peking University School of Life Sciences, Beijing 100871, China; Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China; PKU-IDG/McGovern Institute for Brain Research, Beijing 100871, China
| | - Hyunbeom Lee
- Molecular Recognition Research Center, Korea Institute of Science and Technology, Seoul 02792, South Korea
| | - Yong Chul Bae
- Department of Anatomy and Neurobiology, School of Dentistry, Kyungpook National University, Daegu 41566, South Korea
| | - C Justin Lee
- Division of Bio-Medical Science &Technology, KIST School, Korea University of Science and Technology, Seoul 02792, South Korea; Center for Glia-Neuron Interaction, Korea Institute of Science and Technology, Seoul 02792, South Korea; Center for Cognition and Sociality, Institute for Basic Science, Daejeon 34126, South Korea.
| | - Eunji Cheong
- Department of Biotechnology, College of Life Science and Biotechnology, Yonsei University, Seoul 03722, South Korea; POSTECH Biotech Center, POSTECH, Pohang, South Korea.
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10
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Bae JM, Kim YS, Choo EH, Kim MY, Lee JY, Kim HO, Park YM. Both cardiovascular and cerebrovascular events are decreased following long-term narrowband ultraviolet B phototherapy in patients with vitiligo: a propensity score matching analysis. J Eur Acad Dermatol Venereol 2020; 35:222-229. [PMID: 32702138 DOI: 10.1111/jdv.16830] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Accepted: 07/09/2020] [Indexed: 12/30/2022]
Abstract
BACKGROUND Systemic effects of long-term narrowband ultraviolet B (NB-UVB) phototherapy have not been well studied in vitiligo patients. An 11-year nationwide population-based retrospective cohort study was conducted using the Korean National Health Insurance claims database (2007-2017). OBJECTIVES To investigate the effects of long-term NB-UVB phototherapy on the risk of cardiovascular and cerebrovascular events in vitiligo patients. METHODS This study included vitiligo patients with ≥100 phototherapy sessions (phototherapy group, n = 3229) and <3 phototherapy sessions (no phototherapy group, n = 9687), in which covariables with age, sex, insurance type and comorbidities such as diabetes, hypertension and hyperlipidemia were matched by 1 : 3 propensity score matching. The outcomes of interest were cardiovascular (ischaemic heart disease and myocardial infarction) and cerebrovascular events (cerebrovascular infraction and haemorrhage). Cox proportional hazards models were used to assess the associations between NB-UVB phototherapy and each event. RESULTS The risk of cardiovascular or cerebrovascular events was significantly decreased in the phototherapy group compared with the no phototherapy group [hazard ratio (HR) 0.637, 95% confidence interval (CI) 0.523-0.776]. Subgroup analysis revealed that the risk of cardiovascular (HR: 0.682, 95% CI: 0.495-0.940) and cerebrovascular events (HR: 0.601, 95% CI: 0.470-0.769) were significantly lower in the phototherapy group than the no phototherapy group, respectively. CONCLUSIONS Our findings suggest that long-term NB-UVB phototherapy could decrease the risk of cardiovascular and cerebrovascular events in patients with vitiligo.
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Affiliation(s)
- J M Bae
- Department of Dermatology, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Y-S Kim
- Department of Microbiology, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - E H Choo
- Division of Cardiology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - M-Y Kim
- CNP Skin Clinic, Seoul, Korea
| | - J Y Lee
- Department of Dermatology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - H-O Kim
- Line Dermatology Clinic, Seoul, Korea
| | - Y M Park
- Department of Dermatology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
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11
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Lunyera J, Park YM, Ward JB, Gaston SA, Bhavsar NA, Muntner P, Sandler DP, Jackson CL. 1016 Multiple Sleep Disturbances and Hypertension Risk Among White, Black, and Hispanic/Latina Women. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.1012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Poor sleep has been associated with a higher risk of hypertension, but few prospective studies have included multiple sleep dimensions and few have investigated age differences or racial/ethnic disparities in this relationship among pre- and post-menopausal women.
Methods
To investigate the association between sleep disturbances and hypertension risk, we used data from women in the United States enrolled in the Sister Study who were aged 35 to 74 years at baseline (2003 to 2009) and did not have hypertension at enrollment. Participants were followed through September 2017. Sleep duration, inconsistent weekly sleep patterns, sleep debt, frequent napping, and insomnia symptoms were reported at baseline. During follow-up, participants reported whether they were diagnosed by a healthcare provider with hypertension. Adjusting for sociodemographic characteristics, health behaviors, and health conditions including diabetes and depression, we used Cox Proportional Hazards regression to estimate hypertension risk among women with vs. without unfavorable sleep characteristics. We also investigated potential modification by race/ethnicity, age,and menopausal status.
Results
Of 33,175 women without hypertension at baseline (mean age ± standard deviation: 53.9 ±8.8 years; 88.8% White, 6.4% Black, and 4.9% Hispanic/Latina), 19.9% developed hypertension over a median follow-up of 9.2 years (interquartile range: 7.6 to 10.9). After adjustment, insomnia symptoms (hazard ratio[HR]=1.08 (95% Confidence Interval [CI]: 1.03-1.15)) and insomnia symptoms combined with short sleep (HR=1.14 (95% CI: 1.06-1.23)) were associated with incident hypertension. While similar across race/ethnicity, these associations were stronger in younger (age <54 vs. ≥54 years) and premenopausal vs. postmenopausal women (p-values for interaction <0.05).
Conclusion
Sleep disturbances related to insomnia were associated with an increased risk of hypertension, especially among younger and premenopausal women.
Support
This work was funded by the Intramural Program at the National Institutes of Health (NIH), National Institute of Environmental Health Sciences (NIEHS, Z1AES103325-01 [CLJ] and Z01 ES044005 [DPS]).
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Affiliation(s)
- J Lunyera
- Duke University School of Medicine, Durham, NC
| | - Y M Park
- National Institute of Environmental Health Sciences, Research Triangle Park, NC
| | - J B Ward
- Social & Scientific Systems, Durham, NC
| | - S A Gaston
- National Institute of Environmental Health Sciences, Research Triangle Park, NC
| | - N A Bhavsar
- Duke University School of Medicine, Durham, NC
| | - P Muntner
- University of Alabama at Birmingham, Birmingham, AL
| | - D P Sandler
- National Institute of Environmental Health Sciences, Research Triangle Park, NC
| | - C L Jackson
- National Institute of Environmental Health Sciences, Research Triangle Park, NC
- National Institute on Minority Health and Health Disparities, Bethesda, MD
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12
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Park YM, Seo SJ. Evidence for interactions between filaggrin null mutations and environmental exposures in the aetiology of atopic dermatitis is currently lacking. Br J Dermatol 2020; 183:411. [PMID: 32141071 DOI: 10.1111/bjd.18895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Y M Park
- Department of Dermatology, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - S J Seo
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
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13
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Qi J, Zihang Z, Zhang J, Park YM, Shrestha D, Jianling B, Merchant AT. Periodontal Antibodies and All-Cause and Cardiovascular Disease Mortality. J Dent Res 2019; 99:51-59. [PMID: 31634041 DOI: 10.1177/0022034519884012] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Periodontitis is positively linked to cardiovascular disease (CVD), diabetes, cancer, and increased mortality. Empirically derived clusters of IgG antibodies against 19 selected periodontal microorganisms have been associated with hyperglycemia. We further investigated associations between these serum IgG antibody clusters and all-cause and CVD mortality in a representative US population. Participants free of CVD and cancer and aged ≥40 y at baseline (N = 6,491) from the Third National Health and Nutrition Examination Survey (1988 to 1994) were followed up until December 31, 2011. Antibodies were categorized into 4 clusters: red-green, orange-red, yellow-orange, and orange-blue. Over a 23-y follow-up, 2,702 deaths occurred, including 810 CVD-related deaths. In fully adjusted Cox proportional hazard models, the red-green cluster was positively associated with all-cause mortality (tertile 3 vs. tertile 1: hazard ratio [HR] = 1.43, 95% CI = 1.08 to 1.90, P = 0.015). The yellow-orange cluster was inversely associated with all-cause mortality (tertile 3 vs. tertile 1: HR = 0.78, 95% CI = 0.63 to 0.97, P = 0.028) and CVD mortality (tertile 2 vs. tertile 1: HR = 0.57, 95% CI = 0.42 to 0.77, P = 0.005). The orange-blue cluster (composed of antibodies against Eubacterium nodatum and Actinomyces naeslundii) was inversely associated with all-cause mortality (tertile 3 vs. tertile 1: HR = 0.65, 95% CI = 0.55 to 0.78, P < 0.0001) and CVD mortality (tertile 3 vs. tertile 1: HR = 0.65, 95% CI = 0.47 to 0.88, P = 0.007). These antibodies could predict prognosis or be potential intervention targets to prevent systemic effects of periodontal disease if further studies establish a causal relationship.
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Affiliation(s)
- J Qi
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA.,Department of Epidemiology, School of Public Health, Nanjing Medical University, Nanjing, China.,Department of Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Z Zihang
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA.,Department of Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, China
| | - J Zhang
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA
| | - Y M Park
- Epidemiology Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC, USA
| | - D Shrestha
- Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA
| | - B Jianling
- Department of Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, China
| | - A T Merchant
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA
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14
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Park YM, Roh SY, Lee DI, Shim J, Choi JI, Park SW, Kim YH. P2860The effects of single nucleotide polymorphisms in Korean patients with early-onset lone atrial fibrillation after catheter ablation. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.1169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
The status of SNPs among patients with extremely early-onset lone AF and the association with outcome of catheter ablation has not been evaluated before. This study evaluated the status of single nucleotide polymorphisms (SNPs) in Korean patients with early-onset (<40 years old) lone AF and effects on the outcome after catheter ablation.
Methods
A total of 89 consecutive patients (mean age 35.7±3.7 years, 81 males) with drug-refractory AF (paroxysmal 64.0%) who underwent catheter ablation were included. Sixteen SNPs including rs13376333, rs10465885, rs10033464, rs2200733, rs17042171, rs6843082, rs7193343, rs2106261, rs17570669, rs853445, rs11708996, rs6800541, rs251253, rs3807989, rs11047543 and rs3825214 were genotyped. Serial 48-day Holter electrocardiographic recordings were acquired to detect AF recurrences during long-term follow up.
Results
Wild type of rs7193343 [CC; 0/7 (0%) vs. CT; 22/40 (55.0%) vs. TT; 18/41 (43.9%), p=0.025] and rs11047543 [GG; 26/69 (37.7%) vs. GA; 13/18 (72.2%) vs. AA; 0/0, p=0.009] and homozygous variant of rs3825214 [AA; 16/31 (51.6%) vs. AG; 22/43 (51.2%) vs. GG; 2/13 (15.4%), p=0.05] were significantly associated with lower rate of late recurrence. When the patients were assigned to four groups according to the number of risk alleles (n=0–3), Kaplan-Meier survival analysis showed incremental prognostic value according to the number of variant alleles (p=0.002) (Figure 1).
Figure 1
Conclusions
Polymorphisms on rs7193343, rs3825214 and rs11047543 modulate the risk for AF recurrence after catheter ablation during long term follow up in Korean patients with early-onset lone AF.
Acknowledgement/Funding
Korean Society of Cardiology
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Affiliation(s)
- Y M Park
- Gil Hospital, Gachon University of Medicine & Science, Incheon, Korea (Republic of)
| | - S Y Roh
- Korea University Anam Hospital, Seoul, Korea (Republic of)
| | - D I Lee
- Korea University Anam Hospital, Seoul, Korea (Republic of)
| | - J Shim
- Korea University Anam Hospital, Seoul, Korea (Republic of)
| | - J.-I Choi
- Korea University Anam Hospital, Seoul, Korea (Republic of)
| | - S W Park
- Sejong General Hospital, Bucheon-Shi, Korea (Republic of)
| | - Y.-H Kim
- Sejong General Hospital, Bucheon-Shi, Korea (Republic of)
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15
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Lim J, Chun H, Won J, Park YM, Lee CJ. Mao-b inhibition reduces astrogliosis and transforms reactive astrocytes into active astrocytes under pathological conditions. IBRO Rep 2019. [DOI: 10.1016/j.ibror.2019.07.399] [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: 11/17/2022] Open
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16
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Chun H, Kim Y, Kang YJ, Im H, Shin JH, Ju Y, Won W, Park YM, Lim J, Lee J, Woo J, Hwang Y, Jo S, Wetzel I, Park JH, Kim D, Kim DY, Gwag BJ, Kim Y, Park KD, Kaang BK, Cho H, Ryu H, Lee CJ. Severe reactive astrocytes precipitate pathological hallmarks of Alzheimer's disease via excessive H2O2-production. IBRO Rep 2019. [DOI: 10.1016/j.ibror.2019.07.377] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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17
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Zhong Z, Jin Q, Zhang J, Park YM, Shrestha D, Bai J, Merchant AT. Serum IgG Antibodies against Periodontal Microbes and Cancer Mortality. JDR Clin Trans Res 2019; 5:166-175. [PMID: 31277564 DOI: 10.1177/2380084419859484] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
INTRODUCTION Periodontitis is a chronic inflammatory condition initiated by microorganisms and is positively linked to systemic conditions such as cancer, cardiovascular disease, and diabetes mellitus. OBJECTIVES To prospectively investigate associations between empirically derived clusters of IgG antibodies against 19 selected periodontal microorganisms and cancer mortality in a representative sample of the US population. METHODS We evaluated 6,491 participants aged ≥40 y from the Third National Health and Nutrition Examination Survey (1988 to 1994), who had complete data on IgG antibody titers against 19 selected periodontal microorganisms and were free of cardiovascular disease and cancer. In a prior study, antibodies were categorized into 4 mutually exclusive groups via cluster analysis: red-green, orange-red, yellow-orange, and orange-blue. Cluster scores were estimated by summing z scores of the antibody titers making up each cluster. Participants were followed up to death until December 31, 2011. Cox proportional hazard models were applied to estimate hazard ratios (HRs) and 95% CIs for all-cancer mortality by tertiles of cluster scores. RESULTS During follow-up for a median of 15.9 y, there were 2,702 deaths (31.3%), including 631 cancer-related deaths (8.1%). After adjusting for multiple confounders, the orange-blue cluster was inversely associated with cancer mortality (tertile 2 vs. tertile 1: HR = 0.67, 95% CI = 0.54 to 0.84; tertile 3 vs tertile 1: HR = 0.62, 95% CI = 0.46 to 0.84). The association between the yellow-orange cluster and all-cancer mortality was also inverse but not significant, and the orange-red cluster and the red-green cluster were not associated with all-cancer mortality. CONCLUSIONS Antibodies against Eubacterium nodatum and Actinomyces naeslundii may be novel predictors of cancer mortality. If further studies establish a causal relationship between these antibodies and cancer mortality, they could be targets to prevent possible systemic effects of periodontal disease with potential interventions to raise their levels. KNOWLEDGE TRANSFER STATEMENT Periodontal antibodies against Eubacterium nodatum and Actinomyces naeslundii were inversely associated with cancer mortality among adults followed up for an average of 16 y. Periodontal antibodies may predict cancer mortality.
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Affiliation(s)
- Z Zhong
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA.,Department of Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Q Jin
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA.,Department of Epidemiology, School of Public Health, Nanjing Medical University, Nanjing, China
| | - J Zhang
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA
| | - Y M Park
- Epidemiology Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC, USA
| | - D Shrestha
- Epidemiology Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA
| | - J Bai
- Department of Biostatistics, School of Public Health, Nanjing Medical University, Nanjing, China
| | - A T Merchant
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA
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18
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Lee JH, Kim HJ, Han KD, Han JH, Bang CH, Park YM, Lee JY, Lee SJ, Park YG, Lee YB. Incidence and prevalence of alopecia areata according to subtype: a nationwide, population-based study in South Korea (2006-2015). Br J Dermatol 2019; 181:1092-1093. [PMID: 31102412 DOI: 10.1111/bjd.18145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- J H Lee
- Department of Dermatology, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - H J Kim
- Department of Dermatology, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - K D Han
- Department of Biostatistics, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul, 137-701, Korea
| | - J H Han
- Department of Dermatology, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - C H Bang
- Department of Dermatology, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Y M Park
- Department of Dermatology, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - J Y Lee
- Department of Dermatology, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - S J Lee
- Department of Business Management, Kwangwoon University, Seoul, Korea
| | - Y-G Park
- Department of Biostatistics, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul, 137-701, Korea
| | - Y B Lee
- Department of Dermatology, Uijeongbu St Mary's Hospital, College of Medicine, The Catholic University of Korea, 271 Chunbo Street, Uijeongbu, 07345, Korea
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19
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Park YM, Lee CK, Kim HJ. Gastrointestinal: Colon cast with segmental stricture following colonic ischemia. J Gastroenterol Hepatol 2019; 34:630. [PMID: 30592093 DOI: 10.1111/jgh.14550] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 10/01/2018] [Accepted: 11/13/2018] [Indexed: 12/09/2022]
Affiliation(s)
- Y M Park
- Center for Crohn's and Colitis, Department of Gastroenterology, Kyung Hee University School of Medicine, Seoul, Korea
| | - C K Lee
- Center for Crohn's and Colitis, Department of Gastroenterology, Kyung Hee University School of Medicine, Seoul, Korea
| | - H J Kim
- Center for Crohn's and Colitis, Department of Gastroenterology, Kyung Hee University School of Medicine, Seoul, Korea
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20
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Park YM, Chun H, Shin JI, Lee CJ. Astrocyte Specificity and Coverage of hGFAP-CreERT2 [Tg(GFAP-Cre/ERT2)13Kdmc] Mouse Line in Various Brain Regions. Exp Neurobiol 2018; 27:508-525. [PMID: 30636902 PMCID: PMC6318562 DOI: 10.5607/en.2018.27.6.508] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 12/12/2018] [Accepted: 12/12/2018] [Indexed: 11/25/2022] Open
Abstract
Astrocyte is the most abundant cell type in the central nervous system and its importance has been increasingly recognized in the brain pathophysiology. To study in vivo function of astrocyte, astrocyte-specific gene-targeting is regarded as a powerful approach. Especially, hGFAP-CreERT2, which expresses tamoxifen-inducible Cre recombinase under the human GFAP promoter, has been developed and characterized from several research groups. However, one of these mouse lines, [Tg(GFAP-Cre/ERT2)13Kdmc] from Ken McCarthy group has not been quantitatively analyzed, despite its frequent use. Here, we performed comprehensive characterization of this mouse line with quantitative analysis. By crossing this mouse line with Ai14 (RCL-tdTomato), a very sensitive Cre reporter mouse line, we visualized the Cre-expressing cells in various brain regions. For quantitative analysis, we immunostained S100β as an astrocytic marker and NeuN, tyrosine hydroxylase or calbindin as a neuronal marker in different brain regions. We calculated ‘astrocyte specificity’ as the proportion of co-labelled S100β and tdTomato positive cells in the total number of tdTomato positive cells and the ‘astrocyte coverage’ as the proportion of co-labelled S100β and tdTomato positive cells in the total number of S100β positive cells. Interestingly, we found varying degree of astrocyte specificity and coverage in each brain region. In cortex, hypothalamus, substantia nigra pars compacta and cerebellar Purkinje layer, we observed high astrocyte specificity (over 89%) and relatively high astrocyte coverage (over 70%). In striatum, hippocampal CA1 layer, dentate gyrus and cerebellar granule layer, we observed high astrocyte specificity (over 80%), but relative low astrocyte coverage (50–60%). However, thalamus and amygdala showed low astrocyte specificity (about 65%) and significant neuron specificity (over 30%). This hGFAP-CreERT2 mouse line can be useful for genetic modulations of target gene either in gain-of-function or loss-of-function studies in the brain regions with high astrocyte specificity and coverage. However, the use of this mouse line should be restricted to gain-of-function studies in the brain regions with high astrocyte specificity but low coverage. In conclusion, hGFAP-CreERT2 mouse line could be a powerful tool for gene-targeting of astrocytes in cortex, striatum, hippocampus, hypothalamus, substantia nigra pars compacta and cerebellum, but not in thalamus and amygdala.
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Affiliation(s)
- Yongmin Mason Park
- Division of Bio-Medical Science & Technology, Department of Neuroscience, KIST School, Korea University of Science and Technology, Seoul 02792, Korea.,Center for Glia-Neuron Interaction, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea.,Center for Cognition and Sociality, Institute for Basic Science, Daejeon 34126, Korea
| | - Heejung Chun
- Center for Glia-Neuron Interaction, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea.,Center for Cognition and Sociality, Institute for Basic Science, Daejeon 34126, Korea
| | - Jeong-Im Shin
- Division of Bio-Medical Science & Technology, Department of Neuroscience, KIST School, Korea University of Science and Technology, Seoul 02792, Korea.,Center for Glia-Neuron Interaction, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea.,Center for Cognition and Sociality, Institute for Basic Science, Daejeon 34126, Korea
| | - C Justin Lee
- Division of Bio-Medical Science & Technology, Department of Neuroscience, KIST School, Korea University of Science and Technology, Seoul 02792, Korea.,Center for Glia-Neuron Interaction, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea.,Center for Cognition and Sociality, Institute for Basic Science, Daejeon 34126, Korea
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21
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Kim J, Kim YH, Park B, Seo HM, Bang CH, Park GS, Park YM, Rhie JW, Lee JH, Kim C. Multispectral ex vivo photoacoustic imaging of cutaneous melanoma for better selection of the excision margin. Br J Dermatol 2018; 179:780-782. [PMID: 29663310 DOI: 10.1111/bjd.16677] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- J Kim
- Department of Creative IT Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongbuk, 37673, Korea
| | - Y H Kim
- Department of Dermatology, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, 222, Banpo-daero, Seocho-gu, Seoul, 06591, Korea
| | - B Park
- Department of Creative IT Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongbuk, 37673, Korea
| | - H-M Seo
- Department of Dermatology, Hanyang University Guri Hospital, Guri, Korea
| | - C H Bang
- Department of Dermatology, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, 222, Banpo-daero, Seocho-gu, Seoul, 06591, Korea
| | - G S Park
- Department of Pathology, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, 222, Banpo-daero, Seocho-gu, Seoul, 06591, Korea
| | - Y M Park
- Department of Dermatology, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, 222, Banpo-daero, Seocho-gu, Seoul, 06591, Korea
| | - J W Rhie
- Department of Plastic and Reconstructive Surgery, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, 222, Banpo-daero, Seocho-gu, Seoul, 06591, Korea
| | - J H Lee
- Department of Dermatology, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, 222, Banpo-daero, Seocho-gu, Seoul, 06591, Korea
| | - C Kim
- Department of Creative IT Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongbuk, 37673, Korea
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22
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Seo HM, Moon GT, Song YM, Gee HY, Park YM, Lee JY, Lee JH. Expression of YAP and TAZ in molluscum contagiosum virus infected skin. Br J Dermatol 2018; 179:188-189. [PMID: 29330849 DOI: 10.1111/bjd.16333] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- H-M Seo
- Department of Dermatology, Hanyang University Guri Hospital, Seoul, Korea
| | - G T Moon
- Department of Dermatology, College of Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - Y M Song
- Department of Dermatology, College of Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - H Y Gee
- Department of Pharmacology, Brain Korea 21 PLUS Project for Medical Sciences, Yonsei University College of Medicine, Seoul, Korea
| | - Y M Park
- Department of Dermatology, College of Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - J Y Lee
- Department of Dermatology, College of Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - J H Lee
- Department of Dermatology, College of Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
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Park YM, Oh KH, Cho JG, Baek SK, Kwon SY, Jung KY, Woo JS. Analysis of efficacy and safety of core-needle biopsy versus fine-needle aspiration cytology in patients with cervical lymphadenopathy and salivary gland tumour. Int J Oral Maxillofac Surg 2018; 47:1229-1235. [PMID: 29706240 DOI: 10.1016/j.ijom.2018.04.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Revised: 03/01/2018] [Accepted: 04/08/2018] [Indexed: 11/26/2022]
Abstract
In this study, we compared the diagnostic accuracy and safety of fine-needle aspiration cytology and core-needle biopsy in patients with cervical lymphadenopathy or salivary gland tumour, and provided a basis for selecting the appropriate diagnostic method in clinical situations. A total of 278 patients were included in this study. The sensitivities of fine-needle aspiration cytology and core-needle biopsy were 66.7% and 100%, respectively, and negative predictive values were 92.6% and 100%, respectively, for diagnosing malignancy. In diagnosing lymphoma, fine-needle aspiration cytology gave false-negative results in all patients. In diagnosing tuberculous lymphadenopathy, the sensitivities of fine-needle aspiration cytology and core-needle biopsy were 33.3% and 91.15%, respectively, and the negative predictive values were 90.0% and 95.1%, respectively. The sensitivities of fine-needle aspiration cytology and core-needle biopsy were 42.9% and 100% in diagnosing malignant salivary gland tumours, and the negative predictive values were 91% and 100%, respectively. The results of this study showed that core-needle biopsy was superior in diagnosing and distinguishing critical diseases such as malignant lymphadenopathy and tuberculosis in patients with cervical lymphadenopathy and salivary gland tumour.
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Affiliation(s)
- Y M Park
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - K H Oh
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Republic of Korea
| | - J-G Cho
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Republic of Korea
| | - S-K Baek
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Republic of Korea
| | - S-Y Kwon
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Republic of Korea
| | - K-Y Jung
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Republic of Korea
| | - J-S Woo
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, Republic of Korea.
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24
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Kim YS, Park SH, Han K, Bang CH, Lee JH, Park YM. Prevalence and incidence of chronic spontaneous urticaria in the entire Korean adult population. Br J Dermatol 2018; 178:976-977. [PMID: 29106703 DOI: 10.1111/bjd.16105] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Y S Kim
- Department of Dermatology, Seoul St Mary's Hospital
| | - S H Park
- Department of Medical Statistics, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea
| | - K Han
- Department of Medical Statistics, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea
| | - C H Bang
- Department of Dermatology, Seoul St Mary's Hospital
| | - J H Lee
- Department of Dermatology, Seoul St Mary's Hospital
| | - Y M Park
- Department of Dermatology, Seoul St Mary's Hospital
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25
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Yang HJ, Kim MJ, Kang HJ, Lee HY, Park YM, Lee YH, Kang YG, Hwa GP, Kang YS, Jung YM, Lee NK, Park KH. Immunomodulating Properties of Polygonum multiflorum Extracts on Cyclophosphamide-induced Immunosuppression Model. Indian J Pharm Sci 2018. [DOI: 10.4172/pharmaceutical-sciences.1000416] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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26
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Koh W, Park YM, Lee SE, Lee CJ. AAV-Mediated Astrocyte-Specific Gene Expression under Human ALDH1L1 Promoter in Mouse Thalamus. Exp Neurobiol 2017; 26:350-361. [PMID: 29302202 PMCID: PMC5746500 DOI: 10.5607/en.2017.26.6.350] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2017] [Revised: 12/06/2017] [Accepted: 12/08/2017] [Indexed: 01/05/2023] Open
Abstract
Adeno-associated virus (AAV)-mediated gene delivery has been proposed to be an essential tool of gene therapy for various brain diseases. Among several cell types in the brain, astrocyte has become a promising therapeutic target for brain diseases, as more and more contribution of astrocytes in pathophysiology has been revealed. Until now, genetically targeting astrocytes has been possible by utilizing the glial fibrillary acidic protein (GFAP) promoter. In some brain areas including thalamus, however, the GFAP expression in astrocytes is reported to be low, making it difficult to genetically target astrocytes using GFAP promoter. To study the function of astrocytes in thalamus, which serves as a relay station, there is a great need for identifying an alternative astrocyte-specific promoter in thalamus. Recently, a new astrocyte-specific promoter of ALDH1L1 has been identified. However, it has not been examined in thalamus. Here we developed and characterized an AAV vector expressing Cre recombinase under the human ALDH1L1 promoter, AAV-hALDH1L1-Cre. To test the cell-type specific expression of AAV-hALDH1L1-Cre, AAV virus was injected into several brain regions of Ai14 (RCL-tdTomato) mouse, which reports Cre activity by tdTomato expression. In thalamus, we observed that tdTomato was found mostly in astrocytes (91.71%), with minimal occurrence in neurons (2.67%). In contrast, tdTomato signal was observed in both neurons and astrocytes of the amygdala (neuron: 68.13%, astrocyte: 28.35%) and hippocampus (neuron: 76.25%, astrocyte: 18.00%), which is consistent with the previous report showing neuronal gene expression under rat ALDH1L1 promoter. Unexpectedly, tdTomato was found mostly in neurons (91.98%) with minimal occurrence in astrocytes (6.66%) of the medial prefrontal cortex. In conclusion, hALDH1L1 promoter shows astrocyte-specificity in thalamus and may prove to be useful for targeting thalamic astrocytes in mouse.
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Affiliation(s)
- Wuhyun Koh
- Division of Bio-Medical Science &Technology, Department of Neuroscience, KIST School, Korea University of Science and Technology, Seoul 02792, Korea.,Center for Neuroscience and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea
| | - Yongmin Mason Park
- Division of Bio-Medical Science &Technology, Department of Neuroscience, KIST School, Korea University of Science and Technology, Seoul 02792, Korea.,Center for Neuroscience and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea
| | - Seung Eun Lee
- Virus Facility, Research Animal Resource Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea
| | - C Justin Lee
- Division of Bio-Medical Science &Technology, Department of Neuroscience, KIST School, Korea University of Science and Technology, Seoul 02792, Korea.,Center for Neuroscience and Functional Connectomics, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea.,Center for Glia-Neuron Interaction, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea
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Kim SH, Park KN, Kim J, Eun CK, Park YM, Oh MK, Choi KH, Kim HJ, Kim DW, Choo HJ, Cho JH, Oh JH, Park HY. Accuracy of Plain Abdominal Radiography in the Differentiation between Small Bowel Obstruction and Small Bowel Ileus in Acute Abdomen Presenting to Emergency Department. HONG KONG J EMERG ME 2017. [DOI: 10.1177/102490791101800202] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Introduction Our purpose was to evaluate whether plain abdominal radiography (PAR) could accurately differentiate between small bowel obstruction (SBO) and small bowel ileus (SBI) in an emergency setting. We also evaluated the value of known classic signs on the PAR for differentiating between SBO and SBI. Methods This retrospective study included 216 emergency room patients who had small bowel distension (maximal small bowel diameter ≥2.5 cm) on the PAR and who underwent successive abdominal computed tomography. One radiologist and one emergency physician retrospectively reviewed PAR in consensus, unaware of the patients' clinical data; they divided the patients into an SBO group and an SBI group according to the radiographic findings. Presence or numeric values of 10 radiographic signs were also recorded. Final diagnoses of SBO and SBI were established by a combined analysis of medical charts, surgical records, radiographic findings on abdominal computed tomography, and small bowel studies. The differential diagnoses based on PAR and the final diagnoses were compared, and the sensitivity and specificity of PAR were calculated. We also evaluated the differences among 10 radiographic signs between the final SBO and SBI groups. Results Sensitivity and specificity of PAR for SBO were 82.0% and 92.4%, respectively. Among the 10 radiographic signs, all except maximal colon diameter were statistically significant predictors on the final diagnosis. Conclusions PAR is an accurate and effective initial imaging modality for differentiating between SBO and SBI in an emergency setting, and most of the classic radiographic signs have a diagnostic value.
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Affiliation(s)
- SH Kim
- Inje University Haeundae Paik Hospital, Department of Emergency Medicine, 1435 Jwa-dong, Haewondae-gu, Busan 612-030, Republic of Korea
| | - KN Park
- Inje University Haeundae Paik Hospital, Department of Emergency Medicine, 1435 Jwa-dong, Haewondae-gu, Busan 612-030, Republic of Korea
| | - J Kim
- Inje University Haeundae Paik Hospital, Department of Emergency Medicine, 1435 Jwa-dong, Haewondae-gu, Busan 612-030, Republic of Korea
| | - CK Eun
- Inje University Haeundae Paik Hospital, Department of Emergency Medicine, 1435 Jwa-dong, Haewondae-gu, Busan 612-030, Republic of Korea
| | - YM Park
- Inje University Haeundae Paik Hospital, Department of Emergency Medicine, 1435 Jwa-dong, Haewondae-gu, Busan 612-030, Republic of Korea
| | - MK Oh
- Inje University Haeundae Paik Hospital, Department of Emergency Medicine, 1435 Jwa-dong, Haewondae-gu, Busan 612-030, Republic of Korea
| | - KH Choi
- Inje University Haeundae Paik Hospital, Department of Emergency Medicine, 1435 Jwa-dong, Haewondae-gu, Busan 612-030, Republic of Korea
- Uijeongbu St. Mary's Hospital, Department of Emergency Medicine, The Catholic University of Korea, 65-1 Geumo-dong, Uijeongbu-si, Gyeonggi-do, 480-717, Republic of Korea
| | - HJ Kim
- Uijeongbu St. Mary's Hospital, Department of Emergency Medicine, The Catholic University of Korea, 65-1 Geumo-dong, Uijeongbu-si, Gyeonggi-do, 480-717, Republic of Korea
| | - DW Kim
- Inje University Haeundae Paik Hospital, Department of Emergency Medicine, 1435 Jwa-dong, Haewondae-gu, Busan 612-030, Republic of Korea
| | - HJ Choo
- Inje University Haeundae Paik Hospital, Department of Emergency Medicine, 1435 Jwa-dong, Haewondae-gu, Busan 612-030, Republic of Korea
| | - JH Cho
- Inje University Haeundae Paik Hospital, Department of Emergency Medicine, 1435 Jwa-dong, Haewondae-gu, Busan 612-030, Republic of Korea
| | - JH Oh
- Inje University Haeundae Paik Hospital, Department of Emergency Medicine, 1435 Jwa-dong, Haewondae-gu, Busan 612-030, Republic of Korea
| | - HY Park
- Inje University Haeundae Paik Hospital, Department of Emergency Medicine, 1435 Jwa-dong, Haewondae-gu, Busan 612-030, Republic of Korea
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Park YM, Lee YJ, Hussain Z, Lee YH, Park H. The effects and mechanism of action of methane on ileal motor function. Neurogastroenterol Motil 2017; 29. [PMID: 28417537 DOI: 10.1111/nmo.13077] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Accepted: 03/02/2017] [Indexed: 12/12/2022]
Abstract
BACKGROUND Methane has been associated with constipation-predominant irritable bowel syndrome, slowing intestinal transit time by augmenting contractile activity. However, the precise mechanism underlying this effect remains unclear. Therefore, we investigated the mechanisms underlying the effect of methane on contractile activity, and whether such effects are mediated by nerve impulses or muscular contraction. METHODS We connected guinea pig ileal muscle strips to a force/tension transducer and measured amplitudes of contraction in response to electrical field stimulation (EFS; 1, 2, 8, 16 Hz) following methane infusion in the presence of tetradotoxin (TTX), atropine, guanethidine, or GR 113808. We then performed calcium imaging using Oregon Green 488 BAPTA-1 AM in order to visualize changes in calcium fluorescence in response to EFS following methane infusion in the presence of TTX, atropine, or a high K+ solution. KEY RESULTS Methane significantly increased amplitudes of contraction (P<.05), while treatment with TTX abolished such contraction. Methane-induced increases in amplitude were inhibited when lower-frequency (1, 2 Hz) EFS was applied following atropine infusion (P<.05). Neither guanethidine nor GR 113808 significantly altered contraction amplitudes. Methane significantly increased calcium fluorescence, while this increase was attenuated following atropine infusion (P<.05). Although calcium fluorescence was increased by the high K+ solution under pretreatment with TTX, the intensity of fluorescence remained unchanged after methane infusion. CONCLUSIONS AND INFERENCES The actions of methane on the intestine are influenced by the cholinergic pathway of the enteric nervous system. Our findings support the classification of methane as a gasotransmitter.
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Affiliation(s)
- Y M Park
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Y J Lee
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Z Hussain
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Y H Lee
- Department of Physiology, Yonsei University College of Medicine, Seoul, Korea
| | - H Park
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
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Ryu JH, Lee TB, Park YM, Yang KH, Chu CW, Lee JH, Choi BH. Pancreas Transplantation After Liver Transplantation: A Case Report. Transplant Proc 2017; 49:225-228. [PMID: 28104144 DOI: 10.1016/j.transproceed.2016.11.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Accepted: 11/09/2016] [Indexed: 11/30/2022]
Abstract
Our aim was to describe the clinical indications, surgical technique, and clinical outcomes of a pancreas transplantation, performed 4 years after liver transplantation, as treatment for new-onset, uncontrolled diabetes mellitus in a 53-year-old man. Liver transplantation was performed for end-stage liver disease secondary to hepatitis B virus infection and hepatocellular carcinoma. The patient had no history of diabetes prior to the liver transplantation. The decision to proceed with a pancreas transplantation was made when the patient's blood sugar levels could not be normalized despite insulin doses >100 IU/d. A modified cadaveric transplantation technique was used, with the recipient's inferior vena cava dissected for anastomosis with the portal vein of the graft, using a diamond-shaped patch procedure. Moreover, the right common iliac artery was anastomosed with a Y-graft in the pancreas graft, and the duodenum remnant of the graft was anastomosed to the recipient's duodenum using a side-to-side procedure. The 6-month postoperative follow-up included repeated endoscopic biopsy of the graft duodenum, with no evidence of thrombosis or rejection of the graft, with glucose level within normal limits without requirement for diabetic drugs. To our knowledge, this is the first reported case of pancreas transplantation after liver transplantation.
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Affiliation(s)
- J H Ryu
- Division of Hepato-Biliary-Pancreatic Surgery and Transplantation, Department of Surgery, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Korea; Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea
| | - T B Lee
- Division of Hepato-Biliary-Pancreatic Surgery and Transplantation, Department of Surgery, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Korea
| | - Y M Park
- Division of Hepato-Biliary-Pancreatic Surgery and Transplantation, Department of Surgery, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Korea
| | - K H Yang
- Division of Hepato-Biliary-Pancreatic Surgery and Transplantation, Department of Surgery, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Korea
| | - C W Chu
- Division of Hepato-Biliary-Pancreatic Surgery and Transplantation, Department of Surgery, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Korea
| | - J H Lee
- Department of Pathology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Korea
| | - B H Choi
- Division of Hepato-Biliary-Pancreatic Surgery and Transplantation, Department of Surgery, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Korea; Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea.
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30
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Choi BH, Park YM, Yang KH, Chu CW, Ryu JH. Inferior Vena Cava-Duodenal Drainage in Pancreas Alone Transplantation for Chronic Pancreatitis: A Case Report. Transplant Proc 2016; 48:3217-3221. [PMID: 27932185 DOI: 10.1016/j.transproceed.2016.02.068] [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] [Received: 12/05/2015] [Accepted: 02/02/2016] [Indexed: 11/25/2022]
Abstract
Enteric drainage has been the main trend in solitary pancreas transplantation. Compared with bladder drainage, it does not cause metabolic or urologic complications, but there is no way to perform immunologic monitoring, except by graft pancreas biopsy. Additionally, although portal drainage of the graft vein is considered physiological drainage, it has more of a risk for surgical complications. To overcome these disadvantages, we successfully performed inferior vena cava (IVC)-duodenal drainage in pancreas alone transplantation. A 44-year-old man underwent pancreas alone transplantation. He had insulin-dependent diabetes because of chronic pancreatitis, thus he had taken a pancreatic enzyme. After right-sided medial visceral rotation, the IVC was dissected for anastomosis with a graft portal vein. The right common iliac artery was anastomosed with a Y-graft in the pancreas graft. The graft duodenum was anastomosed with recipient duodenum using the side-to-side manner. Postoperatively, he underwent protocol biopsies of the graft duodenum through endoscopy two times. There was no evidence of graft thrombosis or rejection. He had a normal glucose level without any diabetic drugs, and he required no pancreatic enzyme for digestion. The IVC-duodenum drainage procedure was a feasible method for preventing thrombosis and providing an opportunity for direct graft monitoring through endoscopy.
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Affiliation(s)
- B H Choi
- Division of Hepato-Biliary-Pancreatic Surgery and Transplantation, Department of Surgery, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Korea; Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea
| | - Y M Park
- Division of Hepato-Biliary-Pancreatic Surgery and Transplantation, Department of Surgery, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Korea
| | - K H Yang
- Division of Hepato-Biliary-Pancreatic Surgery and Transplantation, Department of Surgery, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Korea
| | - C W Chu
- Division of Hepato-Biliary-Pancreatic Surgery and Transplantation, Department of Surgery, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Korea
| | - J H Ryu
- Division of Hepato-Biliary-Pancreatic Surgery and Transplantation, Department of Surgery, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Korea; Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, Korea.
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Lee HY, Yang KH, Choi BH, Park YM, Yoon KT, Ryu JH, Chu CW. Complete Regression of Recurrent Advanced Hepatocellular Carcinoma After Liver Transplantation in Response to Sorafenib Treatment: A Case Report. Transplant Proc 2016; 48:247-50. [PMID: 26915876 DOI: 10.1016/j.transproceed.2015.11.012] [Citation(s) in RCA: 5] [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] [Received: 08/29/2015] [Revised: 10/29/2015] [Accepted: 11/11/2015] [Indexed: 12/16/2022]
Abstract
Liver transplantation is a potentially curative treatment for hepatocellular carcinoma. However, patients with recurrent hepatocellular carcinoma after liver transplantation have few treatment options and local treatment may not be feasible. Sorafenib, an orally active multikinase inhibitor approved for the treatment of advanced hepatocellular carcinoma, significantly improves progression-free and overall survival. However, only a few studies have evaluated the efficacy of sorafenib in patients with recurrent hepatocellular carcinoma following liver transplantation. Here, we report a case of a patient with recurrent advanced hepatocellular carcinoma after living donor liver transplantation who achieved complete remission in response to sorafenib treatment. The patient has survived for more than 4 years post-transplantation.
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Affiliation(s)
- H Y Lee
- Division of Hepato-Biliary-Pancreatic Surgery and Transplantation, Department of Surgery, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Korea
| | - K H Yang
- Division of Hepato-Biliary-Pancreatic Surgery and Transplantation, Department of Surgery, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Korea
| | - B H Choi
- Division of Hepato-Biliary-Pancreatic Surgery and Transplantation, Department of Surgery, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Korea
| | - Y M Park
- Division of Hepato-Biliary-Pancreatic Surgery and Transplantation, Department of Surgery, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Korea
| | - K T Yoon
- Division of Hepatology, Department of Internal Medicine, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Korea
| | - J H Ryu
- Division of Hepato-Biliary-Pancreatic Surgery and Transplantation, Department of Surgery, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Korea
| | - C W Chu
- Division of Hepato-Biliary-Pancreatic Surgery and Transplantation, Department of Surgery, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, Korea.
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Lee SH, Rhee M, Yang HK, Ha HS, Lee JH, Kwon HS, Park YM, Yim HW, Kang MI, Lee WC, Son HY, Yoon KH. Serum preadipocyte factor 1 concentrations and risk of developing diabetes: a nested case-control study. Diabet Med 2016. [PMID: 26220259 DOI: 10.1111/dme.12871] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AIM To determine whether preadipocyte factor 1 could be a predictive marker for the development of diabetes in people without diabetes at baseline. METHODS We conducted a population-based, nested case-control study of individuals who progressed to diabetes (n = 43) or prediabetes (n = 345) and control participants matched on age, sex and fasting plasma glucose concentration, who maintained normal glucose tolerance (n = 389) during a 4-year follow-up using data from the Chungju Metabolic disease Cohort Study. Circulating levels of preadipocyte factor 1 were measured using an enzyme-linked immunosorbent assay. RESULTS Baseline serum preadipocyte factor 1 levels showed a stepwise decrease across the glucose tolerance status groups at follow-up (normal glucose tolerance: 10.02 ± 3.02 ng/ml; prediabetes: 9.48 ± 3.35 ng/ml; diabetes: 8.66 ± 3.29 ng/ml; P for trend, 0.0151). Individuals whose fasting plasma glucose level had increased or whose homeostasis model assessment of β-cell function had decreased at follow-up showed significantly lower levels of preadipocyte factor 1 compared with their control group counterparts. After adjusting for age, BMI, fasting plasma glucose, serum insulin levels, systolic blood pressure and triglycerides, the incidence of diabetes was nearly threefold higher in the lowest vs. the upper three quartiles of circulating preadipocyte factor 1 (relative risk 2.794; 95% CI 1.188-6.571; P = 0.0185). Notably, these findings were significant in women but not in men. CONCLUSIONS Levels of circulating preadipocyte factor 1 may be a useful biomarker for identifying women at high risk of developing diabetes.
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Affiliation(s)
- S H Lee
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
- Division of Endocrinology and Metabolism, Seoul St. Mary's Hospital, Seoul, Korea
| | - M Rhee
- Division of Endocrinology and Metabolism, Seoul St. Mary's Hospital, Seoul, Korea
| | - H K Yang
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
- Division of Endocrinology and Metabolism, Seoul St. Mary's Hospital, Seoul, Korea
| | - H S Ha
- Department of Preventive Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - J H Lee
- Catholic Institute of U-Healthcare, The Catholic University of Korea, Seoul, Korea
| | - H S Kwon
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
- Division of Endocrinology and Metabolism, Yeouido St. Mary's Hospital, Seoul, Korea
| | - Y M Park
- Department of Preventive Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA
| | - H W Yim
- Department of Preventive Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
- Clinical Research Coordinating Centre, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - M I Kang
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
- Division of Endocrinology and Metabolism, Seoul St. Mary's Hospital, Seoul, Korea
| | - W C Lee
- Department of Preventive Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - H Y Son
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
- Division of Endocrinology and Metabolism, Seoul St. Mary's Hospital, Seoul, Korea
| | - K H Yoon
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
- Division of Endocrinology and Metabolism, Seoul St. Mary's Hospital, Seoul, Korea
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Yang HK, Lee SH, Han K, Kang B, Lee SY, Yoon KH, Kwon HS, Park YM. Lower serum zinc levels are associated with unhealthy metabolic status in normal-weight adults: The 2010 Korea National Health and Nutrition Examination Survey. Diabetes Metab 2015; 41:282-290. [PMID: 25908414 DOI: 10.1016/j.diabet.2015.03.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Revised: 03/17/2015] [Accepted: 03/18/2015] [Indexed: 01/24/2023]
Abstract
AIM This study investigated whether serum zinc concentration is associated with glucose tolerance, insulin resistance and metabolic health status in Korean adults. METHODS Subjects with available serum zinc levels were recruited from the fifth Korea National Health and Nutrition Examination Survey (KNHANESV) cohort. Those in the highest quartile on homoeostasis model assessment for insulin resistance (HOMA-IR) and with a body mass index (BMI) of 18.5-25kg/m(2) were classified as metabolically obese and normal weight (MONW). RESULTS A total of 1813 subjects with a mean age of 45.2±0.5 years and a mean BMI of 24.01±0.11kg/m(2) were enrolled. Those in the lower serum zinc quartiles exhibited higher levels of fasting blood glucose and insulin resistance indices compared with those in the higher quartiles. However, these associations were positive only in normal-weight subjects. Those categorized as MONW exhibited significantly lower serum zinc levels than the metabolically healthy and normal weight (MHNW) subjects (131.6±3.0μg/dL vs 141.7±2.8μg/dL, respectively; P=0.0026), whereas serum zinc levels did not differ according to metabolic health in obese subjects. The odds ratio for being categorized as MONW was 4.12 (95% CI: 1.75, 9.72) among those in the lowest serum zinc quartile compared with those in the highest quartile even after adjusting for possible confounding factors. CONCLUSION Lower serum zinc levels were associated with unhealthy metabolic status in normal-weight adults. Further prospective studies are required to define the role of zinc in metabolic health.
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Affiliation(s)
- H K Yang
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea; Division of Endocrinology and Metabolism, Department of Internal Medicine, Seoul St. Mary's Hospital, Republic of Korea
| | - S H Lee
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea; Division of Endocrinology and Metabolism, Department of Internal Medicine, Seoul St. Mary's Hospital, Republic of Korea
| | - K Han
- Department of Medical Statistics, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - B Kang
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea; Division of Endocrinology and Metabolism, Department of Internal Medicine, Seoul St. Mary's Hospital, Republic of Korea
| | - S Y Lee
- Division of AIDS, Center for Immunology and Pathology, National Institute of Health, Korea Centers for Disease Control and Prevention, Seoul, Republic of Korea
| | - K H Yoon
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea; Division of Endocrinology and Metabolism, Department of Internal Medicine, Seoul St. Mary's Hospital, Republic of Korea
| | - H S Kwon
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea; Division of Endocrinology and Metabolism, Department of Internal Medicine, Yeouido St. Mary's Hospital, #62 Yeouido-dong, Youngdeungpo-gu, 150-713, Seoul, Korea.
| | - Y M Park
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, 915, Greene Street, 29208 Columbia, SC, USA.
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Kim BJ, Kwon HH, Park SY, Min SU, Yoon JY, Park YM, Seo SH, Ahn JY, Lee HK, Suh DH. Double-blind, randomized non-inferiority trial of a novel botulinum toxin A processed from the strain CBFC26, compared with onabotulinumtoxin A in the treatment of glabellar lines. J Eur Acad Dermatol Venereol 2014; 28:1761-7. [PMID: 24593323 DOI: 10.1111/jdv.12408] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Accepted: 01/19/2014] [Indexed: 11/30/2022]
Abstract
BACKGROUND Botulinum toxins have been widely used in cosmetic dermatology. Neurotoxin from the CBFC26 strain (NTC) is a recently developed botulinum toxin type A product manufactured through refined procedures. OBJECTIVE A double-blinded, randomized, multicentre-designed, phase III trial to investigate the non-inferiority of NTC to existing botulinum toxin A, onabotulinumtoxin A in the treatment of moderate to severe glabellar lines. METHODS A total of 272 subjects were randomized in a 1 : 1 ratio to receive 20 U of NTC or onabotulinumtoxin A. The primary endpoint was the response rate of physicians' assessment (PA) using the Facial Wrinkle Scale at week 4. The secondary endpoints included the response rate of PA at weeks 8, 12 and 16, and photographic assessment at weeks 4, 8, 12 and 16. Subjects' improvement assessment and subjective self-satisfaction levels were also investigated. RESULTS Response rates for maximum frown were 89.3% in the NTC group and 81.9% in the onabotulinumtoxin A group at week 4. NTC also resulted in comparable results for both the response rates of the other evaluation points and incidence of adverse events compared to those of onabotulinumtoxin A. In subjects' improvement assessment and photographic evaluations, NTC even demonstrated better results compared with onabotulinumtoxin A in the early phase after treatment. Analysis of these results strongly supports the non-inferiority of NTC to onabotulinumtoxin A in the efficacy and safety. CONCLUSION NTC is as effective as onabotulinumtoxin A in the treatment of glabellar lines, and both products were well tolerated.
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Affiliation(s)
- B J Kim
- Department of Dermatology, Chung-Ang University College of Medicine, Seoul, Korea
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Park YM, Jang JW, Yoo SH, Kim SH, Oh IM, Park SJ, Jang YS, Lee SJ. Combinations of eight key mutations in the X/preC region and genomic activity of hepatitis B virus are associated with hepatocellular carcinoma. J Viral Hepat 2014; 21:171-7. [PMID: 24344773 DOI: 10.1111/jvh.12134] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Accepted: 06/09/2013] [Indexed: 12/16/2022]
Abstract
Accumulation of eight key mutations located in the X/preC regions of the hepatitis B virus (HBV) genome (G1613A, C1653T, T1753V, A1762T, G1764A, A1846T, G1896A and G1899A) is a risk marker for the development of hepatocellular carcinoma (HCC). In this study, we analysed the 8 key mutations in 442 serum samples collected from 310 non-HCC and 132 HCC patients to identify the combinations linked to HCC. After the patients were stratified according to the age groups and mutation combinations, clinical parameters were compared between the HCC and the non-HCC groups. Analyses were focused on patient ≥40 years of age infected by HBV genotype C with A1762T and G1764A mutations in the basal core promoter region (BCP double mutation). In patients with ≥6 mutations, the combination of [G1613A + C1653T + A1846T + G1896A] mutations was closely linked to HCC, whereas no specific single or double mutation combination was associated with HCC. In patients with ≤5 mutations, HBeAg and HBV DNA serum titres were lower in the HCC group than those in the non-HCC group. Unlike the number of mutations, no specific combination correlated with advanced clinical stage in HCC. Of the BCP double mutation-based HBV mutant types, combinations of ≥6 mutations that include G1613A + C1653T + A1846T + G1896A, and combinations of ≤5 mutations with reduced HBeAg production, may be more specific indicators of HCC risk than only the number of mutations or any specific combination(s).
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Affiliation(s)
- Y M Park
- Hepatology Center, Bundang Jesaeng General Hospital, Seongnam-si, Korea; DMC Biomedical Research Center of Daejin Medical Center, Bundang Jesaeng General Hospital, Seongnam-si, Korea
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Park YM, Byeon HK, Chung HP, Choi EC, Kim SH. Comparison of treatment outcomes after transoral robotic surgery and supraglottic partial laryngectomy: our experience with seventeen and seventeen patients respectively. Clin Otolaryngol 2014; 38:270-4. [PMID: 23441587 DOI: 10.1111/coa.12101] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/17/2013] [Indexed: 11/30/2022]
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De Virgilio A, Park YM, Kim WS, Byeon HK, Lee SY, Kim SH. Transoral robotic surgery for the resection of parapharyngeal tumour: our experience in ten patients. Clin Otolaryngol 2013; 37:483-8. [PMID: 23253343 DOI: 10.1111/j.1749-4486.2012.02525.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/23/2012] [Indexed: 11/30/2022]
Affiliation(s)
- A De Virgilio
- Department of Otorhinolaryngology, Sapienza University of Rome, Rome, Italy
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Park J, Chae H, Kim M, Kim Y, Park IY, Shin JC, Park YM. A novel COL7A1 mutation in a Korean patient with Hallopeau-Siemens recessive dystrophic epidermolysis bullosa. Genet Mol Res 2013; 12:678-82. [PMID: 23546949 DOI: 10.4238/2013.march.11.15] [Citation(s) in RCA: 3] [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: 11/03/2022]
Abstract
Dystrophic epidermolysis bullosa (DEB) is an inherited skin fragility disorder that presents various clinical manifestations. DEB is characterized by separation of sublamina densa tissue and abnormalities in the anchoring fibrils that result from mutations in COL7A1 and subsequent defects in type VII collagen. A 16-month-old boy was diagnosed with Hallopeau-Siemens recessive DEB on the basis of typical skin lesions composed of multiple blisters with moderately healed erosions, scarring on trauma-exposed body sites, including hands and feet, pseudosyndactyly and flexion contractures of the toes, and severely dystrophic nails on the right hand. Genomic DNA from the patient and parents were subjected to direct sequencing for the COL7A1 gene. Two heterozygous mutations were detected in the affected child; one novel mutation designated c.4232delC in exon 38 and a single-base substitution (c.6573+1G>C) in intron 81. Deletion of a single cytosine at codon 1411 within exon 38 had produced a frameshift mutation that created a stop codon at codon 1427 (p.Pro1411Leufs*17). This intronic base substitution had led to aberrant splicing and a premature termination codon. This is a novel mutation of COL7A1 associated with DEB in a Korean patient, adding to the range of COL7A1 mutations related to DEB.
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Affiliation(s)
- J Park
- Department of Laboratory Medicine, College of Medicine, Catholic University of Korea, Seoul, Korea
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Abstract
BACKGROUND Recently, evidence has been obtained to suggest that inflammation is provoked through upregulation of macrophage migration inhibitory factor (MIF) expression by steroids. However, little is known regarding the effect of steroids on MIF expression in human keratinocytes and the counter-effect of epigallocatechin-3-gallate (EGCG), a member of the class of green tea polyphenols. OBJECTIVES We determined whether or not steroids cause the upregulation of MIF in human keratinocytes, and if so, whether or not EGCG suppresses MIF upregulation in keratinocytes by steroids. We then assessed the effects of EGCG on MIF-induced Th-related chemokine and cytokine expression in keratinocytes. METHODS HaCaT keratinocytes were first treated with dexamethasone in the presence or absence of EGCG in the culture medium. The keratinocytes were then treated with recombinant human (rh)-MIF in the presence or absence of EGCG in the culture medium. The expression of mRNA and protein in Th-related cytokines and chemokines, including MIF in the keratinocytes, was measured by real-time reverse transcription-polymerase chain reaction, Western blotting and enzyme-linked immunosorbent assay. RESULTS Dexamethasone significantly enhanced MIF expression in human keratinocytes, and EGCG significantly downregulated the expression of dexamethasone-induced MIF. EGCG also significantly downregulated rh-MIF-induced expression of Th-related cytokines and chemokines, such as interleukin (IL)-6, IL-18, transforming growth factor-β, CCL17, CCL22 and CXCL10, in human keratinocytes. CONCLUSIONS These results demonstrated that EGCG may have a novel pharmacological effect to prevent steroid-induced tachyphylaxis and inflammation by suppressing the expression of MIF in human keratinocytes.
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Affiliation(s)
- S U Noh
- Department of Dermatology, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, 505 Banpo-Dong, Seocho-Gu, Seoul 137-701, Korea
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Jang JH, Jung YM, Kim JS, Lee SH, Kim JW, Hwang SG, Rim KS, Park SJ, Park YM, Kang SK, Lee HS, Yun H, Kim JH, Jeong SH. Coexistence of IgM antihepatitis A virus and IgM antihepatitis E virus in acute viral hepatitis: a prospective, multicentre study in Korea. J Viral Hepat 2011; 18:e408-14. [PMID: 21914057 DOI: 10.1111/j.1365-2893.2011.01477.x] [Citation(s) in RCA: 11] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Abstract
This study investigated the clinical, serological and molecular characteristics of coexistence of both immunoglobulin M (IgM) antihepatitis A virus (HAV) and IgM antihepatitis E virus (HEV) in acute viral hepatitis using a prospective, multicentre design. Among a total of 771 symptomatic cases with acute viral hepatitis enrolled in a Korean city from September 2006 to August 2008, coexistence of IgM anti-HAV and IgM anti-HEV was found in 43 patients (A+E group; 6%), while the existence of IgM anti-HAV alone was found in 595 patients (A group; 77%) and that of IgM anti-HEV alone in 14 patients (E group; 2%). Clinical data analysis and measurement of IgM and IgG anti-HEV were performed using two different commercial kits, and HAV RNA and HEV RNA were detected in available serum or stool samples. The clinical features of the A+E group were similar to those of the A group. HAV RNA detection rates in the A+E and A group were similar, while HEV RNA was detected only in the stool samples of the E group, not in the A+E group. Comparative testing of anti-HEV using two different ELISA kits showed markedly discordant results for IgM anti-HEV positivity and consistently low positivity for IgG anti-HEV in the A+E group. Coexistence of IgM anti-HEV measured by the Genelabs ELISA kit in the setting of hepatitis A appears to yield false-positive results in nonendemic areas of HEV infection. Diagnosis of hepatitis E using IgM anti-HEV should be made with caution.
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Affiliation(s)
- J-H Jang
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Seoul, Korea
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Shin HG, Park YM, Kim BH, Seo YH. Fabrication of hemispherical nano structure on a curved Al surface using low-temperature and high-voltage anodizing method. J Nanosci Nanotechnol 2011; 11:427-431. [PMID: 21446469 DOI: 10.1166/jnn.2011.3286] [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] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A simple method of fabricating hemispherical nanostructures on a curved aluminum rod surface was presented. In conventional methods of fabricating nanopatterns on a curved aluminum surface, mechanical or chemical processes have been widely used for the lens technologies. Such processes are not only expensive with long processing times, however, but they also involve local fabrication and are limited in the dimension size. In this paper, a method of fabricating hemispherical nanostructures on a curved aluminum surface is suggested for a functional three-dimensional (3D) master using a low-temperature and high-voltage (LTHV) anodizing method. By reducing the aluminum reaction rate under a low-temperature environment, the reaction current density can be remarkably reduced even though a high voltage was induced. Using the LTHV anodizing method, the hemispherical pattern size can be easily controlled with respect to voltage variations. The sizes of the hemispherical nanopatterns were about 150-300 nm. Using the LTHV anodizing process, hemispherical nanostructures can be obtained on a curved aluminum surface with controllable pattern sizes of 150-300 nm without defects such as burring from Joule's heat, micro-scratches, and cracks. A curved 3D hemispherical nanostructure may be used as a master in the roll-to-roll process.
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Affiliation(s)
- H G Shin
- Division of Mechanical Engineering and Mechatronics, Kangwon National University, Chuncheon 200-701, Korea
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Won CH, Seo PG, Park YM, Yang JM, Lee KH, Sung KJ, Park CW, Kim DW, Chang HS, Won YH, Kim KH. A multicenter trial of the efficacy and safety of 0.03% tacrolimus ointment for atopic dermatitis in Korea. J DERMATOL TREAT 2009; 15:30-4. [PMID: 14754647 DOI: 10.1080/09546630310020812] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [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: 10/26/2022]
Abstract
BACKGROUND Atopic dermatitis is a chronically relapsing, common inflammatory skin disease, which significantly affects quality of life negatively in many respects. Topical steroids are the mainstay of atopic dermatitis treatment but they carry the risk of local side effects. A topical formulation of tacrolimus, a macrolide calcineurin inhibitor, has recently been developed. OBJECTIVE To evaluate the efficacy and safety of 0.03% tacrolimus ointment for the treatment of moderate to severe atopic dermatitis in Korea. METHODS An open, non-comparative, multi-center study with 4 weeks' follow-up was performed. A total of 180 patients (aged 2-57 years old) were enrolled. Tacrolimus ointment (0.03%) was applied to all involved areas twice daily. Efficacy was evaluated by an investigator's global assessment, the eczema area and severity index score, and by the patient's assessment of pruritus and clinical response at baseline, and after weeks 1, 2 and 4. Dermatology life quality index (DLQI), children's DLQI (CDLQI) and toddler's DLQI were assessed at baseline and at week 4. The safety assessment included monitoring all adverse events and clinical laboratory values. RESULTS All efficacy parameters were improved. The mean EASI (eczema area and severity index) score was 19.7 at baseline and reduced to 8.0 at the end of the study. Moderate improvement was observed by the investigator's global assessment after 4 weeks' treatment. A marked decrease of pruritus was observed, and mild or moderate improvement was observed by patients' global assessments after the treatment period. Significant benefits in terms of quality of life in adults and children with atopic dermatitis were obtained. The most common adverse events associated with tacrolimus treatment were transient skin burning sensation (45.3%) and pruritus (41.6%) at the site of application. CONCLUSION 0.03% tacrolimus ointment should be considered effective and safe in both Korean children and adults with moderate to severe atopic dermatitis.
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Affiliation(s)
- C H Won
- Department of Dermatology, Seoul National University Hospital, Korea
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Ryou JH, Lee SJ, Park YM, Kim HO, Kim HS. Acne-photodynamic therapy with intra-lesional injection of 5-aminolevulinic acid. Photodermatol Photoimmunol Photomed 2009; 25:57-8. [PMID: 19152520 DOI: 10.1111/j.1600-0781.2009.00399.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Photodynamic therapy (PDT) is a treatment option for acne patients who fail to respond to conventional therapy. Although potent, we experience side effects such as erythema, exfoliation and dyspigmentation. In attempt to specify treatment and shorten the incubation time, we injected 5-aminolevulinic acid (ALA) to the individual lesion. The results of intralesional injection ILI-PDT and conventional PDT are compared in this study.
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Affiliation(s)
- J H Ryou
- Anacli Clinic, Seoul, South Korea
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Jung J, Cho NH, Kim J, Choi EC, Lee SY, Byeon HK, Park YM, Yang WS, Kim SH. Significant invasion depth of early oral tongue cancer originated from the lateral border to predict regional metastases and prognosis. Int J Oral Maxillofac Surg 2009; 38:653-60. [PMID: 19231137 DOI: 10.1016/j.ijom.2009.01.004] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2008] [Revised: 06/21/2008] [Accepted: 01/19/2009] [Indexed: 10/21/2022]
Abstract
In oral tongue cancer, tumor depth is crucial for cervical lymph node metastasis. There is no standardized method to predict tumor invasion or deciding who should undergo selective neck dissection. In this study, calculated MRI invasion depth was compared with histopathologic (HP) invasion depth to find a correlation, and determine a cutoff value of invasion depth that predicts occult neck node metastasis. 50 patients, diagnosed with T1 or T2 oral tongue cancer originating from the lateral border of the tongue, underwent MRI screening and received surgical excision as primary treatment. MRI and HP invasion depths were compared and the cutoff value determined. The invasion depth to determine the presence of nodal metastasis where summation of specificity and sensitivity was greatest was 8.5mm HP, 10.5mm in T1 weighted enhanced axial image, and 11.5mm in T2 weighted MRI axial image. The relation coefficient of T2 weighted MRI invasion depth and HP depth was 0.851, and accuracy 84%, all of which showed higher correlation compared with T1 weighted enhanced axial image. HP depth was significantly correlated with survival rate. The measurement of invasion depth using MRI is a prerequisite for determining a surgical plan in early oral tongue cancer.
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Affiliation(s)
- J Jung
- Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Korea
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Ko SH, Song KH, Park SA, Kim SR, Cha BY, Son HY, Moon KW, Yoo KD, Park YM, Cho JH, Yoon KH, Ahn YB. Cardiovascular autonomic dysfunction predicts acute ischaemic stroke in patients with Type 2 diabetes mellitus: a 7-year follow-up study. Diabet Med 2008; 25:1171-7. [PMID: 19046195 DOI: 10.1111/j.1464-5491.2008.02567.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
AIMS We investigated whether cardiovascular autonomic neuropathy (CAN) is associated with acute ischaemic stroke in patients with Type 2 diabetes. METHODS From 1999 to 2000, cardiovascular autonomic function tests were conducted in patients with Type 2 diabetes (n = 1458). Patients were followed up between 2006 and 2007. Standard tests for CAN measured heart rate variability parameters [expiration-to-inspiration (E/I) ratio, responses to the Valsalva manoeuvre and standing]. Using the American Diabetes Association criteria, the CAN scores were determined from the results of each test as follows: 0 = normal, 1 = abnormal (total maximum score 3). We assessed the development of acute ischaemic stroke events. RESULTS The prevalence of CAN at baseline was 55.7% (E/I 17.1%, Valsalva 39.4%, posture 27.3%) (n = 1126). During follow-up, 131 patients (11.6%) developed acute ischaemic stroke. The vascular events were more frequent in older patients (P < 0.001) and in those with diabetes of longer duration (P = 0.022), hypertension (P < 0.001) or diabetic retinopathy (P = 0.03) than in patients without vascular events. Patients with ischaemic stroke had higher creatinine levels (P = 0.045) and higher urine albumin excretion (P = 0.025) than those of patients without stroke. Cox proportional hazard regression analysis revealed that the CAN score was associated with the development of acute ischaemic stroke (total score 0 vs. 3, adjusted hazard ratio 2.7, 95% CI 1.3-5.5, P = 0.006). CONCLUSION Cardiovascular autonomic dysfunction was significantly associated with the development of ischaemic stroke in patients with Type 2 diabetes.
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Affiliation(s)
- S H Ko
- Division of Endocrinology and Metabolism, Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea
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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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