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Moon SY, Park H, Lee W, Lee S, Lho SK, Kim M, Kim KW, Kwon JS. Magnetic resonance texture analysis reveals stagewise nonlinear alterations of the frontal gray matter in patients with early psychosis. Mol Psychiatry 2023; 28:5309-5318. [PMID: 37500824 DOI: 10.1038/s41380-023-02163-3] [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] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 06/13/2023] [Accepted: 06/23/2023] [Indexed: 07/29/2023]
Abstract
Although gray matter (GM) abnormalities are present from the early stages of psychosis, subtle/miniscule changes may not be detected by conventional volumetry. Texture analysis (TA), which permits quantification of the complex interrelationship between contrasts at the individual voxel level, may capture subtle GM changes with more sensitivity than does volume or cortical thickness (CTh). We performed three-dimensional TA in nine GM regions of interest (ROIs) using T1 magnetic resonance images from 101 patients with first-episode psychosis (FEP), 85 patients at clinical high risk (CHR) for psychosis, and 147 controls. Via principal component analysis, three features of gray-level cooccurrence matrix - informational measure of correlation 1 (IMC1), autocorrelation (AC), and inverse difference (ID) - were selected to analyze cortical texture in the ROIs that showed a significant change in volume or CTh in the study groups. Significant reductions in GM volume and CTh of various frontotemporal regions were found in the FEP compared with the controls. Increased frontal AC was found in the FEP group compared to the controls after adjusting for volume and CTh changes. While volume and CTh were preserved in the CHR group, a stagewise nonlinear increase in frontal IMC1 was found, which exceeded both the controls and FEP group. Increased frontal IMC1 was also associated with a lesser severity of attenuated positive symptoms in the CHR group, while neither volume nor CTh was. The results of the current study suggest that frontal IMC1 may reflect subtle, dynamic GM changes and the symptomatology of the CHR stage with greater sensitivity, even in the absence of gross GM abnormalities. Some structural mechanisms that may contribute to texture changes (e.g., macrostructural cortical lamina, neuropil/myelination, cortical reorganization) and their possible implications are explored and discussed. Texture may be a useful tool to investigate subtle and dynamic GM abnormalities, especially during the CHR period.
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Affiliation(s)
- Sun Young Moon
- Department of Public Health Service, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
- Institute of Human Behavioral Medicine, Seoul National University Medical Research Center, Seoul, Republic of Korea
| | - Hyungyou Park
- Department of Brain and Cognitive Science, Seoul National University College of Natural Science, Seoul, Republic of Korea
| | - Won Lee
- Department of Brain and Cognitive Science, Seoul National University College of Natural Science, Seoul, Republic of Korea
| | - Subin Lee
- Department of Brain and Cognitive Science, Seoul National University College of Natural Science, Seoul, Republic of Korea
| | | | - Minah Kim
- Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Psychiatry, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Ki Woong Kim
- Institute of Human Behavioral Medicine, Seoul National University Medical Research Center, Seoul, Republic of Korea
- Department of Brain and Cognitive Science, Seoul National University College of Natural Science, Seoul, Republic of Korea
- Department of Psychiatry, Seoul National University College of Medicine, Seoul, Republic of Korea
- Department of Neuropsychiatry, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Jun Soo Kwon
- Institute of Human Behavioral Medicine, Seoul National University Medical Research Center, Seoul, Republic of Korea.
- Department of Brain and Cognitive Science, Seoul National University College of Natural Science, Seoul, Republic of Korea.
- Department of Neuropsychiatry, Seoul National University Hospital, Seoul, Republic of Korea.
- Department of Psychiatry, Seoul National University College of Medicine, Seoul, Republic of Korea.
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Moon SY, Han M, Ryu G, Shin SA, Lee JH, Lee CS. Emerging Immune Checkpoint Molecules on Cancer Cells: CD24 and CD200. Int J Mol Sci 2023; 24:15072. [PMID: 37894750 PMCID: PMC10606340 DOI: 10.3390/ijms242015072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 10/04/2023] [Accepted: 10/10/2023] [Indexed: 10/29/2023] Open
Abstract
Cancer immunotherapy strategies are based on the utilization of immune checkpoint inhibitors to instigate an antitumor immune response. The efficacy of immune checkpoint blockade, directed at adaptive immune checkpoints, has been demonstrated in select cancer types. However, only a limited subset of patients has exhibited definitive outcomes characterized by a sustained response after discontinuation of therapy. Recent investigations have highlighted the significance of immune checkpoint molecules that are overexpressed in cancer cells and inhibit myeloid lineage immune cells within a tumor microenvironment. These checkpoints are identified as potential targets for anticancer immune responses. Notably, the immune checkpoint molecules CD24 and CD200 have garnered attention owing to their involvement in tumor immune evasion. CD24 and CD200 are overexpressed across diverse cancer types and serve as signaling checkpoints by engaging their respective receptors, Siglec-10 and CD200 receptor, which are expressed on tumor-associated myeloid cells. In this review, we summarized and discussed the latest advancements and insights into CD24 and CD200 as emergent immune checkpoint moieties, further delving into their therapeutic potentials for cancer treatment.
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Affiliation(s)
- Sun Young Moon
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea; (S.Y.M.); (M.H.); (G.R.); (S.-A.S.)
| | - Minjoo Han
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea; (S.Y.M.); (M.H.); (G.R.); (S.-A.S.)
| | - Gyoungah Ryu
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea; (S.Y.M.); (M.H.); (G.R.); (S.-A.S.)
| | - Seong-Ah Shin
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea; (S.Y.M.); (M.H.); (G.R.); (S.-A.S.)
| | - Jun Hyuck Lee
- Research Unit of Cryogenic Novel Material, Korea Polar Research Institute, Incheon 21990, Republic of Korea;
- Department of Polar Sciences, University of Science and Technology, Incheon 21990, Republic of Korea
| | - Chang Sup Lee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju 52828, Republic of Korea; (S.Y.M.); (M.H.); (G.R.); (S.-A.S.)
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Shin JI, Kim SE, Lee MH, Kim MS, Lee SW, Park S, Shin YH, Yang JW, Song JM, Moon SY, Kim SY, Park Y, Suh DI, Yang JM, Cho SH, Jin HY, Hong SH, Won HH, Kronbichler A, Koyanagi A, Jacob L, Hwang J, Tizaoui K, Lee KH, Kim JH, Yon DK, Smith L. COVID-19 susceptibility and clinical outcomes in autoimmune inflammatory rheumatic diseases (AIRDs): a systematic review and meta-analysis. Eur Rev Med Pharmacol Sci 2022; 26:3760-3770. [PMID: 35647859 DOI: 10.26355/eurrev_202205_28873] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
OBJECTIVE This meta-analysis aims to assess the susceptibility to and clinical outcomes of COVID-19 in autoimmune inflammatory rheumatic disease (AIRD) and following AIRD drug use. MATERIALS AND METHODS We included observational and case-controlled studies assessing susceptibility and clinical outcomes of COVID-19 in patients with AIRD as well as the clinical outcomes of COVID-19 with or without use of steroids and conventional synthetic disease-modifying antirheumatic drugs (csDMARDs). RESULTS Meta-analysis including three studies showed that patients with AIRD are not more susceptible to COVID-19 compared to patients without AIRD or the general population (OR: 1.11, 95% CI: 0.58 to 2.14). Incidence of severe outcomes of COVID-19 (OR: 1.34, 95% CI: 0.76 to 2.35) and COVID-19 related death (OR: 1.21, 95% CI: 0.68 to 2.16) also did not show significant difference. The clinical outcomes of COVID-19 among AIRD patients with and without csDMARD or steroid showed that both use of steroid (OR: 1.69, 95% CI: 0.96 to 2.98) or csDMARD (OR: 1.35, 95% CI: 0.63 to 3.08) had no effect on clinical outcomes of COVID-19. CONCLUSIONS AIRD does not increase susceptibility to COVID-19, not affecting the clinical outcome of COVID-19. Similarly, the use of steroids or csDMARDs for AIRD does not worsen the clinical outcome.
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Affiliation(s)
- J I Shin
- Department of Pediatrics, Yonsei University College of Medicine, Seoul, Republic of Korea.
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Song GC, Jeon JS, Sim HJ, Lee S, Jung J, Kim SG, Moon SY, Ryu CM. Dual functionality of natural mixtures of bacterial volatile compounds on plant growth. J Exp Bot 2022; 73:571-583. [PMID: 34679179 DOI: 10.1093/jxb/erab466] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 10/21/2021] [Indexed: 06/13/2023]
Abstract
Bacteria emit volatile compounds that modulate plant growth. Previous studies reported the impacts of bacterial volatile compounds on plant growth; however, the results varied depending on bacterial nutrient availability. We investigated whether the effects of plant growth-inhibiting volatiles (PGIVs) and plant growth-promoting volatiles (PGPVs) depended on the perceived dose by evaluating the growth of Arabidopsis thaliana seedlings placed at 7, 14, and 21 cm away from Bacillus amyloliquefaciens GB03 colonies growing in rich medium. A large bacterial colony (500 μl inoculum) inhibited plant growth at 7 cm and promoted growth at 21 cm, whereas a small bacterial colony (100 μl inoculum) induced the opposite pattern of response. We identified pyrazine and 2,5-dimethylpyrazine as candidate PGIVs that significantly reduced plant growth at a distance of 7 cm. PGIV effects were validated by exposing plants to synthetic 2,5-dimethylpyrazine and bacteria emitting PGPVs, which showed that PGIVs overwhelm PGPVs to rapidly increase salicylic acid content and related gene expression. This is referred to as the defence-growth trade-off. Our results indicate that high PGIV concentrations suppress plant growth and promote immunity, whereas low PGPV concentrations promote growth. This study provides novel insights into the complex effects of bacterial volatile mixtures and fine-tuning of bacteria-plant interactions.
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Affiliation(s)
- Geun Cheol Song
- Molecular Phytobacteriology Laboratory, KRIBB, Daejeon 34141, S. Korea
| | - Je-Seung Jeon
- Molecular Phytobacteriology Laboratory, KRIBB, Daejeon 34141, S. Korea
| | - Hee-Jung Sim
- Center for Genome Engineering, Institute for Basic Science (IBS), Daejeon 34126, S. Korea
- Environmental Safety Assessment Center, Korea Institute of Toxicology (KIT), 17 Jegok-gil, Munsan-eup, Jinju 52834, South Korea
| | - Soohyun Lee
- Molecular Phytobacteriology Laboratory, KRIBB, Daejeon 34141, S. Korea
| | - Jihye Jung
- Molecular Phytobacteriology Laboratory, KRIBB, Daejeon 34141, S. Korea
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon 34141, Korea
| | - Sang-Gyu Kim
- Center for Genome Engineering, Institute for Basic Science (IBS), Daejeon 34126, S. Korea
| | - Sun Young Moon
- Center for Genome Engineering, Institute for Basic Science (IBS), Daejeon 34126, S. Korea
| | - Choong-Min Ryu
- Molecular Phytobacteriology Laboratory, KRIBB, Daejeon 34141, S. Korea
- Biosystems and Bioengineering Program, University of Science and Technology (UST), Daejeon 34113, S. Korea
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Moon SY, Jung MK, Heo J. Endoscopic Hemostasis Using an Over-the-Scope Clip For Massive Bleeding After Percutaneous Endoscopic Gastrostomy (PEG) Removal: A Case Report. Clin Endosc 2021; 55:443-446. [PMID: 34030431 PMCID: PMC9178132 DOI: 10.5946/ce.2020.294] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 01/15/2021] [Indexed: 11/14/2022] Open
Abstract
Percutaneous endoscopic gastrostomy (PEG) is a common method for providing long-term enteral nutrition to patients. PEG tube placement and removal are relatively safe; generally, a PEG tube can be removed using gentle traction, and excessive bleeding is rare. The over-the-scope clip system is a new device that can be used for gastrointestinal hemostasis and for closing gastrointestinal fistulae. In the present case, a 68-year-old man had to remove the PEG tube because of persistent leakage around the PEG tube. Although it was gently removed using traction, incessant bleeding continued, with a Rockall score of 5 points, even after hemocoagulation was attempted. An over-the-scope clip device was used to achieve hemostasis and fistula closure.
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Affiliation(s)
- Sun Young Moon
- Department of Internal Medicine, Kyungpook National University School of Medicine, Daegu, Korea.,Department of Internal Medicine, Kyungpook National University Hospital, Daegu, Korea
| | - Min Kyu Jung
- Department of Internal Medicine, Kyungpook National University School of Medicine, Daegu, Korea.,Department of Internal Medicine, Kyungpook National University Hospital, Daegu, Korea
| | - Jun Heo
- Department of Internal Medicine, Kyungpook National University School of Medicine, Daegu, Korea.,Department of Internal Medicine, Kyungpook National University Hospital, Daegu, Korea
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Moon SY, Heo J, Jung MK, Cho CM. Biliary Self-Expandable Metal Stent Could Be Recommended as a First Treatment Modality for Immediate Refractory Post-Endoscopic Retrograde Cholangiopancreatography Bleeding. Clin Endosc 2021; 55:128-135. [PMID: 34030429 PMCID: PMC8831415 DOI: 10.5946/ce.2021.057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 03/24/2021] [Indexed: 11/14/2022] Open
Abstract
Background/Aims Recent reports suggest that the biliary self-expandable metallic stent (SEMS) is highly effective for maintaining hemostasis when endoscopic hemostasis fails in endoscopic retrograde cholangiopancreatography (ERCP)-related bleeding. We compared whether temporary SEMS offers better efficacy than angioembolization for refractory immediate ERCP-related bleeding.
Methods Patients who underwent SEMS placement or underwent angioembolization for bleeding control in refractory immediate ERCP-related bleeding were included in the retrospective analysis. We evaluated the hemostasis success rate, severity of bleeding, change in hemoglobin levels, amount of transfusion, and delay to the start of hemostasis.
Results A total of 27 patients with SEMS and 13 patients who underwent angioembolization were enrolled. More transfusions were needed in the angioembolization group (1.0±1.4 units vs. 2.5±2.0 units; p=0.034). SEMS failure was successfully rescued by angioembolization. The partially covered SEMS (n=23, 85.1%) was generally used, and the median stent-indwelling time was 4 days. The mean delay to the start of angioembolization was 95.2±142.9 (range, 9–491) min.
Conclusions Temporary SEMS had similar results to those of angioembolization (96.3% vs. 92.3%; p=0.588). Immediate SEMS insertion is considered a bridge treatment modality for immediate refractory ERCP-related bleeding. Angioembolization still has a role as rescue therapy when SEMS does not work effectively.
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Affiliation(s)
- Sun Young Moon
- Department of Internal Medicine, Kyungpook National University Hospital, Daegu, Korea.,School of Medicine, Kyungpook National University, Daegu, Korea
| | - Jun Heo
- Department of Internal Medicine, Kyungpook National University Hospital, Daegu, Korea.,School of Medicine, Kyungpook National University, Daegu, Korea
| | - Min Kyu Jung
- Department of Internal Medicine, Kyungpook National University Hospital, Daegu, Korea.,School of Medicine, Kyungpook National University, Daegu, Korea
| | - Chang Min Cho
- Department of Internal Medicine, Kyungpook National University Hospital, Daegu, Korea.,School of Medicine, Kyungpook National University, Daegu, Korea
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Jeon SB, Seo BG, Baek SK, Lee HG, Shin JH, Lee IW, Kim HJ, Moon SY, Shin KC, Choi JW, Kim TS, Lee JH, Hwangbo C. Endothelial Cells Differentiated from Porcine Epiblast Stem Cells. Cell Reprogram 2021; 23:89-98. [PMID: 33861642 DOI: 10.1089/cell.2020.0088] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Pluripotent stem cells (PSCs) have the ability of self-renewal that can retain the characteristics of the mother cell, and of pluripotency that can differentiate into several body types. PSCs typically include embryonic stem cells (ESCs) derived from the inner cell mass of the preimplantation embryo, and epiblast stem cells (EpiSCs) derived from the epiblast of postimplantation embryo. Although PSCs are able to be used by differentiation into endothelial cells as a potential treatment for vascular diseases, human ESCs and induced PSCs (iPSCs) are followed by ethical and safety issues. Pigs are anatomically and physiologically similar to humans. Therefore, the goal of this study was to establish an efficient protocol that differentiates porcine EpiSCs (pEpiSCs) into the endothelial cells for applying the treatment of human vascular diseases. As a result, alkaline phosphatase (AP)-negative (-) pEpiSCs cultured in endothelial cell growth basal medium-2 (EBM-2) differentiation medium in association with 50 ng/mL of vascular endothelial growth factor (VEGF) for 8 days were changed morphologically like the feature of endothelial cells, and expression of pluripotency-associated markers (OCT-3/4, NANOG, SOX2, and C-MYC) in porcine differentiated cells was significantly decreased (p < 0.05). Additionally, when pEpiSCs were cultured in EBM-2 + 50 ng/mL of VEGF, porcine differentiated cells represented a common endothelial cell marker positive (CD31+) but monocytes and lymphocytes marker negative (CD45-). Therefore, these results indicated that pEpiSCs cultured in EBM-2 + 50 ng/mL of VEGF culture condition were efficiently differentiated into endothelial cells for the treatment of blood vessel diseases.
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Affiliation(s)
- Soo-Been Jeon
- Department of Animal Bioscience, College of Agriculture and Life Sciences, Gyeongsang National University, Jinju, Republic of Korea
| | - Bo-Gyeong Seo
- Division of Life Science, College of Natural Sciences, Gyeongsang National University, Jinju, Republic of Korea.,Division of Applied Life Science (BK21), PMBBRC and Research Institute of Life Sciences, Geongsang National University, Jinju, Republic of Korea
| | - Sang-Ki Baek
- Department of Animal Bioscience, College of Agriculture and Life Sciences, Gyeongsang National University, Jinju, Republic of Korea.,Developmental and Reproductive Toxicology Research Group, Korea Institute of Toxicology, Daejeon, Republic of Korea
| | - Hyeon-Geun Lee
- Department of Animal Bioscience, College of Agriculture and Life Sciences, Gyeongsang National University, Jinju, Republic of Korea.,Institute of Agriculture and Life Science, and College of Agriculture and Life Sciences, Gyeongsang National University, Jinju, Republic of Korea
| | - Joon-Hong Shin
- Department of Animal Bioscience, College of Agriculture and Life Sciences, Gyeongsang National University, Jinju, Republic of Korea
| | - In-Won Lee
- Department of Animal Bioscience, College of Agriculture and Life Sciences, Gyeongsang National University, Jinju, Republic of Korea
| | - Hyo-Jin Kim
- Division of Life Science, College of Natural Sciences, Gyeongsang National University, Jinju, Republic of Korea.,Division of Applied Life Science (BK21), PMBBRC and Research Institute of Life Sciences, Geongsang National University, Jinju, Republic of Korea
| | - Sun Young Moon
- Division of Life Science, College of Natural Sciences, Gyeongsang National University, Jinju, Republic of Korea.,Division of Applied Life Science (BK21), PMBBRC and Research Institute of Life Sciences, Geongsang National University, Jinju, Republic of Korea
| | - Keum-Chul Shin
- Institute of Agriculture and Life Science, and College of Agriculture and Life Sciences, Gyeongsang National University, Jinju, Republic of Korea.,Department of Forest Environmental Resources, College of Agriculture and Life Sciences, Gyeongsang National University, Jinju, Republic of Korea
| | - Jung-Woo Choi
- Institute of Agriculture and Life Science, and College of Agriculture and Life Sciences, Gyeongsang National University, Jinju, Republic of Korea
| | - Tae-Suk Kim
- Department of Animal Bioscience, College of Agriculture and Life Sciences, Gyeongsang National University, Jinju, Republic of Korea.,Asan Medical Center, College of Medicine, University of Ulsan, Seoul, Republic of Korea
| | - Joon-Hee Lee
- Department of Animal Bioscience, College of Agriculture and Life Sciences, Gyeongsang National University, Jinju, Republic of Korea.,College of Animal Life Science, Kangwon National University, Chuncheon, Republic of Korea
| | - Cheol Hwangbo
- Division of Life Science, College of Natural Sciences, Gyeongsang National University, Jinju, Republic of Korea.,Division of Applied Life Science (BK21), PMBBRC and Research Institute of Life Sciences, Geongsang National University, Jinju, Republic of Korea
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Park HJ, Nam BE, Moon SY, Kim SG, Joo Y, Kim JG. Reduced host plant growth and increased tyrosine-derived secondary metabolites under climate change and negative consequences on its specialist herbivore. Sci Total Environ 2021; 759:143507. [PMID: 33223185 DOI: 10.1016/j.scitotenv.2020.143507] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 10/28/2020] [Accepted: 10/28/2020] [Indexed: 06/11/2023]
Abstract
Compositive changes in climatic factors, e.g., carbon dioxide (CO2) and precipitation frequency and intensity, affect the strength of species interactions via responses in plants. Therefore, understanding the effects of climate change on plant-herbivore interactions is important to maintain biodiversity as about 70% of insects are herbivorous. However, the interactive effects of CO2 and precipitation on plants and consequences for herbivores are poorly understood. Here, we examined how elevated CO2 and increased watering frequency affect the growth and resistance responses of Aristolochia contorta and the growth performance of its specialist herbivore, Sericinus montela. Elevated CO2 suppressed growth with decreased photosynthesis ability, and increased resistance in plants. In contrast, increased watering frequency partly ameliorated the negative effects of high CO2. Growth performance of specialist herbivores decreased under elevated CO2 condition as a consequence of increased resistance in plants. Due to the significant effects of CO2, we suggest that both the quantity and the quality of host plants as a food would decline, and the growth performance of its specialist herbivore might be threatened as climate change progresses.
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Affiliation(s)
- Hyun Jun Park
- Department of Biology Education, Seoul National University, Seoul 08826, Republic of Korea
| | - Bo Eun Nam
- Department of Biology Education, Seoul National University, Seoul 08826, Republic of Korea
| | - Sun Young Moon
- Center for Genome Engineering, Institute for Basic Science, Daejeon 34047, Republic of Korea
| | - Sang-Gyu Kim
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Youngsung Joo
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea; Department of Biology, Chungbuk National University, Cheongju 28644, Republic of Korea.
| | - Jae Geun Kim
- Department of Biology Education, Seoul National University, Seoul 08826, Republic of Korea; Center for Education Research, Seoul National University, Seoul 08826, Republic of Korea.
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Kim HS, Park JW, Moon SY, Lee YK, Ha YC, Koo KH. Current and Future Burden of Periprosthetic Joint Infection from National Claim Database. J Korean Med Sci 2020; 35:e410. [PMID: 33350183 PMCID: PMC7752258 DOI: 10.3346/jkms.2020.35.e410] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2020] [Accepted: 10/15/2020] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND Periprosthetic joint infection (PJI) is the most serious complication after total joint arthroplasty. The incidence and burden of PJI in North America have been reported. There might be potential differences according to ethnics and regional practices between western countries and East Asia. Nevertheless, its incidence in East Asia remains unknown. We aimed to evaluate the incidence and economic burden of PJI in Korea and to project the future burden. METHODS We identified numbers of total hip arthroplasties, total knee arthroplasties and PJIs in Korea from 2010 to 2018 using medical claim data of Korean Health Insurance and Review and Assessment. Annual incidence and medical cost of PJI were calculated. We projected future burden of PJI through 2030 using Quasi-poisson regression model. RESULTS The annual incidence of PJI ranged from 2.3% to 2.8% and the average cost per each PJI patient ranged from $4,361 to $6,016. Total annual cost of PJI increased from $8.0 million in 2010 to $18.0 million in 2018 and was projected to exceed $57.0 million by 2030. CONCLUSION The incidence of PJI in Korea is comparable with reported PJI incidence of 2.0%-2.7% in the United States. Our findings would be used for worldwide comparison of PJI epidemiology and establishment of healthcare policies for PJI in East Asia.
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Affiliation(s)
- Hong Seok Kim
- Department of Orthopaedic Surgery, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Jung Wee Park
- Department of Orthopaedic Surgery, Chung-Ang University College of Medicine, Seoul, Korea
| | - Sun Young Moon
- Complex disease and Genome Epidemiology Branch, Department of Public Health Science, School of Public Health, Seoul National University, Seoul, Korea
| | - Young Kyun Lee
- Department of Orthopaedic Surgery, Seoul National University Bundang Hospital, Seongnam, Korea.
| | - Yong Chan Ha
- Department of Orthopaedic Surgery, Chung-Ang University College of Medicine, Seoul, Korea
| | - Kyung Hoi Koo
- Department of Orthopaedic Surgery, Seoul National University Bundang Hospital, Seongnam, Korea
- Department of Orthopaedic Surgery, Seoul National University College of Medicine, Seoul, Korea
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Lee AR, Moon DK, Siregar A, Moon SY, Jeon RH, Son YB, Kim BG, Hah YS, Hwang SC, Byun JH, Woo DK. Involvement of mitochondrial biogenesis during the differentiation of human periosteum-derived mesenchymal stem cells into adipocytes, chondrocytes and osteocytes. Arch Pharm Res 2019; 42:1052-1062. [PMID: 31802425 DOI: 10.1007/s12272-019-01198-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 11/27/2019] [Indexed: 02/07/2023]
Abstract
Due to a rapidly expanding aging population, the incidence of age-related or degenerative diseases has increased, and efforts to handle the issue with regenerative medicine via adult stem cells have become more important. And it is now clear that the mitochondrial energy metabolism is important for stem cell differentiation. When stem cells commit to differentiate, glycolytic metabolism is being shifted to mitochondrial oxidative phosphorylation (OXPHOS) to meet an increased cellular energy demand required for differentiated cells. However, the nature of cellular metabolisms during the differentiation process of periosteum-derived mesenchymal stem cells (POMSC) is still unclear. In the present study, we investigated mitochondrial biogenesis during the adipogenic, chondrogenic, and osteogenic differentiation of POMSCs. Both mitochondrial DNA (mtDNA) contents and mitochondrial proteins (VDAC and mitochondrial OXPHOS complex subunits) were increased during all of these mesenchymal lineage differentiations of POMSCs. Interestingly, glycolytic metabolism is reduced as POMSCs undergo osteogenic differentiation. Furthermore, reducing mtDNA contents by ethidium bromide treatments prevents osteogenic differentiation of POMSCs. In conclusion, these results indicate that mitochondrial biogenesis and OXPHOS metabolism play important roles in the differentiation of POMCS and suggest that pharmaceutical modulation of mitochondrial biogenesis and/or function can be a novel regulation for POMSC differentiation and regenerative medicine.
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Affiliation(s)
- A Ram Lee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju, Republic of Korea
| | - Dong Kyu Moon
- Department of Orthopedic Surgery and Institute of Health Sciences, School of Medicine and Hospital, Gyeongsang National University, Jinju, Republic of Korea
| | - Adrian Siregar
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju, Republic of Korea
| | - Sun Young Moon
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju, Republic of Korea
| | - Ryoung-Hoon Jeon
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Gyeongsang National University, Jinju, Republic of Korea
| | - Young-Bum Son
- Department of Theriogenology and Biotechnology, College of Veterinary Medicine, Gyeongsang National University, Jinju, Republic of Korea
| | - Bo Gyu Kim
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju, Republic of Korea
| | - Young-Sool Hah
- Clinical Research Institute of Gyeongsang, National University Hospital, Jinju, Republic of Korea
| | - Sun-Chul Hwang
- Department of Orthopedic Surgery and Institute of Health Sciences, School of Medicine and Hospital, Gyeongsang National University, Jinju, Republic of Korea
| | - June-Ho Byun
- Department of Oral and Maxillofacial Surgery and Institute of Health Sciences, School of Medicine and Hospital, Gyeongsang National University, Jinju, Republic of Korea.
| | - Dong Kyun Woo
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju, Republic of Korea.
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Shin SA, Moon SY, Park D, Park JB, Lee CS. Apoptotic cell clearance in the tumor microenvironment: a potential cancer therapeutic target. Arch Pharm Res 2019; 42:658-671. [PMID: 31243646 DOI: 10.1007/s12272-019-01169-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 06/06/2019] [Indexed: 12/14/2022]
Abstract
Millions of cells in the human body undergo apoptosis not only under normal physiological conditions but also under pathological conditions such as infection or other diseases related to acute tissue injury. Swift apoptotic cell clearance is essential for tissue homeostasis. Defective clearance of dead cells is linked to pathogenesis of diseases such as inflammatory diseases, atherosclerosis, neurological disease, and cancer. Significance of apoptotic cell clearance has been emerging as an interesting field for disease treatment. Efficient apoptotic cell clearance plays an important role in reducing inflammation through the suppression of inappropriate inflammatory responses under healthy and diseased conditions. However, apoptotic cell clearance related to cancer pathogenesis is more complex in tumor microenvironments. Chronic inflammation resulting from the failure of apoptotic cell clearance can contribute to tumor progression. Conversely, tumor cells can exploit the anti-inflammatory effect of apoptotic cell clearance to generate an immunosuppressive tumor microenvironment. In this review, focus is on the current understanding of apoptotic cell clearance in the tumor microenvironment. Furthermore, we discuss how signaling molecules (PtdSer and PtdSer recognition receptor) mediating apoptotic cell clearance are aberrantly expressed in the tumor microenvironment and their current development state as potential therapeutic targets for clinical cancer therapy.
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Affiliation(s)
- Seong-Ah Shin
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, 501 Jinju-daero, Jinju, Gyeongnam, 52828, Republic of Korea
| | - Sun Young Moon
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, 501 Jinju-daero, Jinju, Gyeongnam, 52828, Republic of Korea
| | - Daeho Park
- School of Life Sciences and Aging Research Institute, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Jong Bae Park
- Specific Organs Cancer Branch, Research Institute and Hospital, National Cancer Center, Goyang, Gyeonggi, 10408, Republic of Korea.,Department of System Cancer Science, Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, Gyeonggi, 10408, Republic of Korea
| | - Chang Sup Lee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, 501 Jinju-daero, Jinju, Gyeongnam, 52828, Republic of Korea.
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Moon SY, Shin SA, Oh YS, Park HH, Lee CS. Understanding the Role of the BAI Subfamily of Adhesion G Protein-Coupled Receptors (GPCRs) in Pathological and Physiological Conditions. Genes (Basel) 2018; 9:genes9120597. [PMID: 30513696 PMCID: PMC6316137 DOI: 10.3390/genes9120597] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [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: 10/22/2018] [Revised: 11/24/2018] [Accepted: 11/28/2018] [Indexed: 02/06/2023] Open
Abstract
Brain-specific angiogenesis inhibitors (BAIs) 1, 2, and 3 are members of the adhesion G protein-coupled receptors, subfamily B, which share a conserved seven-transmembrane structure and an N-terminal extracellular domain. In cell- and animal-based studies, these receptors have been shown to play diverse roles under physiological and pathological conditions. BAI1 is an engulfment receptor and performs major functions in apoptotic-cell clearance and interacts (as a pattern recognition receptor) with pathogen components. BAI1 and -3 also participate in myoblast fusion. Furthermore, BAI1–3 have been linked to tumor progression and neurological diseases. In this review, we summarize the current understanding of the functions of BAI1–3 in pathological and physiological conditions and discuss future directions in terms of the importance of BAIs as pharmacological targets in diseases.
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Affiliation(s)
- Sun Young Moon
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju 52828, Korea.
| | - Seong-Ah Shin
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju 52828, Korea.
| | - Yong-Seok Oh
- Department of Brain-Cognitive Sciences, Daegu-Gyeongbuk Institute of Science and Technology (DGIST), Hyeonpung-myeon, Dalseong-gun, Daegu 42988, Korea.
| | - Hyun Ho Park
- College of Pharmacy, Chung-Ang University, Seoul 06974, Korea.
| | - Chang Sup Lee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Gyeongsang National University, Jinju 52828, Korea.
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13
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Moon SY, de Souto Barreto P, Chupin M, Mangin JF, Bouyahia A, Fillon L, Andrieu S, Vellas B. Association between Red Blood Cells Omega-3 Polyunsaturated Fatty Acids and White Matter Hyperintensities: The MAPT Study. J Nutr Health Aging 2018; 22:174-179. [PMID: 29300438 DOI: 10.1007/s12603-017-0965-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVES The association between circulating biomarkers of red blood cells (RBC) omega-3 polyunsaturated fatty acids (PUFAs) and cerebral white matter hyperintensities (WMH) on the brain MRI remains yet unclear. We investigated the cross-sectional and prospective associations of RBC omega-3 PUFAs with WMH in dementia-free older adults with subjective memory complaints. DESIGN Participants were 234 older adults with assessments for both PUFA and MRI near to baseline; among them, 79 also had an MRI assessment at 3-year follow-up. The measurement of WMH volume was obtained by an automated segmentation algorithm. We related individual or combinational baseline RBC omega-3 PUFAs levels with baseline WMH volumes and WMH evolution over 3 years. We carried out multiple (cross-sectional) and mixed-effect (prospective analysis, with random effects at participant's level) linear regressions with adjustment for age, sex, time interval between date of blood draw for measurement of fatty acids and date of brain MRI, the status of APOE e4 carrier, body mass index, and vascular risk factors. Associations were considered significant at p ≤ 0.006 to take into account multiplicity (8 comparisons). RESULTS None of the eight RBC omega-3 PUFAs tested was significantly associated with WMH at both cross-sectional and prospective analyses. CONCLUSIONS We did not find any association between omega-3 PUFAs and WMH in non-demented older adults with memory complaints. A longer longitudinal study with data on omega-3 PUFAs and WMH would contribute important information to this field.
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Affiliation(s)
- S Y Moon
- So Young Moon, MD, PhD, Department of Neurology, School of Medicine, Ajou University, 5 San, Woncheon-dong, Yongtong-gu, Suwon-si, Kyunggi-do, 442-749, Republic of Korea, Tel: +82-31-219-5175, Fax: +82-31-219-5178, E-mail:
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14
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Moon SY, de Souto Barreto P, Cesari M, Chupin M, Mangin JF, Bouyahia A, Fillon L, Andrieu S, Vellas B. Physical Activity and Changes in White Matter Hyperintensities over Three Years. J Nutr Health Aging 2018; 22:425-430. [PMID: 29484357 DOI: 10.1007/s12603-017-0959-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
OBJECTIVES Since physical activity (PA) has demonstrated benefits for cardiovascular health, it is possible to hypothesize that higher or increasing PA slows the progression of white matter hyperintensities (WMH). We investigated the association between PA and the progression of WMH in non-demented older adults with memory complaints. DESIGN We included 152 participants (mean age 74.7±3.8 years; 63.8% women) in the analyses, in whom information on self-reported PA and MRI was available at both baseline and 3-year follow-up. From the PA questionnaire, the baseline metabolic equivalent of task (MET-minute/week) and changes in MET-minute/week over three years were separately calculated for overall, leisure-time, and non-leisure time PA. WMH volume at baseline and 3-year follow-up was obtained by using an automated segmentation algorithm. RESULTS Mixed-effect linear regression models showed that none of the baseline PA variables was associated with progression of WMH over time. People who had decreased their PA levels over three years tended to show greater progression of WMH compared with those who had maintained PA levels of ≥1200 MET-min/week (roughly equivalent to ≥300 minutes of brisk walking) in the unadjusted model (β±SE=4.85±2.42, p=0.045); however, this association was no longer significant after adjustment for confounders (β±SE =3.63±2.18, p=0.096). CONCLUSIONS We did not find any significant association between PA and WMH in non-demented older adults with memory complaints. However, decrease over time in PA levels tended to be associated with progression of WMH. A larger longitudinal study with data on PA assessed using objective measures would provide important information in this field.
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Affiliation(s)
- S Y Moon
- So Young Moon, MD, PhD, Department of Neurology, School of Medicine, Ajou University, 5 San, Woncheon-dong, Yongtong-gu, Suwon-si, Kyunggi-do, 442-749, Republic of Korea, Tel: +82-31-219-5175, Fax: +82-31-219-5178, E-mail:
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Jang YH, Jung HJ, Moon SY, Lee WJ, Lee SJ, Lee WK, Kim DW. Systematic review and quality analysis of studies on the efficacy of topical diphenylcyclopropenone treatment for alopecia areata. J Am Acad Dermatol 2017; 77:170-172.e1. [PMID: 28619558 DOI: 10.1016/j.jaad.2017.03.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 03/08/2017] [Accepted: 03/09/2017] [Indexed: 11/16/2022]
Affiliation(s)
- Yong Hyun Jang
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Han Jin Jung
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Sun Young Moon
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Weon Ju Lee
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Seok-Jong Lee
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Won Kee Lee
- Center of Biostatistics, Kyungpook National University School of Medicine, Daegu, Korea
| | - Do Won Kim
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea.
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16
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Jang YH, Hong NS, Moon SY, Eun DH, Lee WK, Chi SG, Kim JY, Lee WJ, Lee SJ, Kim DW. Long-Term Prognosis of Alopecia Totalis and Alopecia Universalis: A Longitudinal Study with More than 10 Years of Follow-Up: Better than Reported. Dermatology 2017; 233:250-256. [DOI: 10.1159/000477458] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Accepted: 05/11/2017] [Indexed: 11/19/2022] Open
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17
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Jang YH, Sim HB, Moon SY, Lee WJ, Lee SJ, Jin M, Kim SH, Kim DW. House Dust Mite Sensitization Is Inversely Associated with Plasma 25-Hydroxyvitamin D3 Levels in Patients with Severe Atopic Dermatitis. Ann Dermatol 2017; 29:400-406. [PMID: 28761286 PMCID: PMC5500703 DOI: 10.5021/ad.2017.29.4.400] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 08/31/2016] [Indexed: 12/23/2022] Open
Abstract
Background The relationship between atopic dermatitis (AD) and low vitamin D levels has been studied. Emerging evidence has implicated vitamin D as a critical regulator of immunity, playing a role in both the innate and cell-mediated immune systems. However, the effect of vitamin D on house dust mite (HDM) sensitization in patients with AD has not been established. Objective We investigated the association between vitamin D levels and HDM sensitization according to AD severity. Methods In total, 80 patients (43 men and 37 women) with AD were included. We classified AD severity using Rajka and Langeland scores. Laboratory tests included serum 25-hydroxyvitamin D3, total immunoglobulin E (IgE), and specific IgE antibody titer against Dermatophagoides farinae and D. pteronyssinus. Results There were no differences in vitamin D levels between the mild or moderate AD and severe AD groups. In the severe AD group, high HDM sensitization group had lower serum vitamin D levels compared to low HDM sensitization group with statistical significance. In addition, a significant negative correlation was found between vitamin D levels and HDM sensitization in the severe AD group. Conclusion Our results demonstrate that low vitamin D levels may link to high HDM sensitization in patients with the severe AD. Further elucidation of the role of vitamin D in HDM sensitization may hold profound implications for the prevention and treatment of AD.
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Affiliation(s)
- Yong Hyun Jang
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Hyun Bo Sim
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Sun Young Moon
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Weon Ju Lee
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Seok-Jong Lee
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Meiling Jin
- Department of Pharmacology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Sang-Hyun Kim
- Department of Pharmacology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Do Won Kim
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea
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Jung HJ, Moon SY, Sohn MY, Jang YH, Lee SJ, Kim DW, Lee WJ. Some Becker's Nevus Melanocytes Remain Alive after Treatment with Q-Switched Alexandrite Laser. Ann Dermatol 2017; 29:352-355. [PMID: 28566917 PMCID: PMC5438947 DOI: 10.5021/ad.2017.29.3.352] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 05/30/2016] [Accepted: 06/02/2016] [Indexed: 11/24/2022] Open
Affiliation(s)
- Han Jin Jung
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Sun Young Moon
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Mi Yeung Sohn
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Yong Hyun Jang
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Seok-Jong Lee
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Do Won Kim
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Weon Ju Lee
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea
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19
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Moon SY, Eun DH, Jung HJ, Kim JY, Park TI, Lee WJ, Lee SJ, Kim DW, Han MH, Jang YH. Coexistence of psoriasis and epidermolysis bullosa acquisita: Evaluation of the integrity of the basement membrane. J Cutan Pathol 2017; 44:602-603. [PMID: 28425108 DOI: 10.1111/cup.12940] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Revised: 03/16/2017] [Accepted: 03/21/2017] [Indexed: 11/30/2022]
Affiliation(s)
- Sun Young Moon
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Dong Hyuk Eun
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Han Jin Jung
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Jun Young Kim
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Tae-In Park
- Department of Pathology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Weon Ju Lee
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Seok-Jong Lee
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Do Won Kim
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Man-Hoon Han
- Department of Pathology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Yong Hyun Jang
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea
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Choi YJ, Lee JH, Moon SY, Choi JY, Jung SP, Bae JW, Park KH. Abstract P2-04-24: Changes of tumor-infiltrating lymphocytes and programmed death-ligand1 positivity after neoadjuvant chemotherapy in patients with locally advanced breast cancer. Cancer Res 2017. [DOI: 10.1158/1538-7445.sabcs16-p2-04-24] [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: 11/16/2022]
Abstract
Abstract
Background
Recently, the balance in immune system between immune surveillance and tolerance is known to be associated with the prognosis of breast cancer patients. The aim of this study was to investigate changes of tumor-infiltrating lymphocytes (TILs) and programmed death-ligand1 (PD-L1) status after neoadjuvant chemotherapy (NAC) and their impact on recurrence in patients with locally advanced breast cancer.
Methods
Paired samples (before and after NAC) of triple negative or HER2+ breast cancer tissue were obtained from clinical stage II or III patients (n=39) undergoing NAC and subsequent breast resection. The assessment of immunohistochemical (IHC) staining for PD-L1 were performed. Immunostaining of forkhead box P3 (Foxp3) and CD4/CD8 were performed for subtyping of TILs in triple negative breast cancer (TNBC) only. Clinicopathologic data including baseline characteristics, tumor response and recurrence were reviewed.
Results
Proportion of PD-L1 (+) tumor cells in pre-chemotherapy tissue was 20% (5/25) in HER2+ and 28.6% (4/14) in TNBC. It could not predict pathologic complete response. Most post-chemotherapy tissue (21/24) showed same PD-L1 positivity with pre-chemotherapy tissue. The rest showed the decreased PD-L1 positivity after NAC.
In cases of TNBC, the increased number of CD8+ T cells was significantly associated with PD-L1 positivity in pre-chemotherapy tissue. (p=0.001) Foxp3+ T cell proportions decreased significantly (p=0.046) and CD8+/Foxp3+ T-cell ratio increased significantly (p=0.023) after NAC. The patients with increased number of CD8+ T cells after NAC had a tendency to live longer without recurrence compared to patients with decreased CD8+ T cells (62.3 vs 38.1 months, p=0.158).
Conclusion
Our data provides the clinical evidence that PD-L1 positivity are associated with CD8+ T cell proportion and increased CD8+ T cells after NAC might be good prognostic marker. The role of immunologic balance as a prognostic marker for recurrence must be evaluated in future study.
Citation Format: Choi YJ, Lee JH, Moon SY, Choi JY, Jung SP, Bae JW, Park KH. Changes of tumor-infiltrating lymphocytes and programmed death-ligand1 positivity after neoadjuvant chemotherapy in patients with locally advanced breast cancer [abstract]. In: Proceedings of the 2016 San Antonio Breast Cancer Symposium; 2016 Dec 6-10; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2017;77(4 Suppl):Abstract nr P2-04-24.
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Affiliation(s)
- YJ Choi
- Korea University Anam Hospital, Seoul, Republic of Korea
| | - JH Lee
- Korea University Anam Hospital, Seoul, Republic of Korea
| | - SY Moon
- Korea University Anam Hospital, Seoul, Republic of Korea
| | - JY Choi
- Korea University Anam Hospital, Seoul, Republic of Korea
| | - SP Jung
- Korea University Anam Hospital, Seoul, Republic of Korea
| | - JW Bae
- Korea University Anam Hospital, Seoul, Republic of Korea
| | - KH Park
- Korea University Anam Hospital, Seoul, Republic of Korea
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Kim H, Moon SY, Sohn MY, Lee WJ. Insulin-Like Growth Factor-1 Increases the Expression of Inflammatory Biomarkers and Sebum Production in Cultured Sebocytes. Ann Dermatol 2017; 29:20-25. [PMID: 28223742 PMCID: PMC5318522 DOI: 10.5021/ad.2017.29.1.20] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 04/25/2016] [Accepted: 05/09/2016] [Indexed: 01/13/2023] Open
Abstract
Background Acne vulgaris has been linked to the Western diet. Hyperglycemic diet increases insulin and insulin-like growth factor (IGF)-1. Deeper insights into IGF-1-mediated signal pathway are critical importance to understand the impact of Western diet. Objective We investigated the effect of IGF-1 on the expression of inflammatory biomarkers and sebum production in cultured sebocytes. Methods Polymerase chain reaction and enzyme-linked immunosorbent assay were performed to measure changes in the expression of inflammatory biomarkers including interleukin (IL)-1β, IL-6, IL-8, tumor necrosis factor (TNF)-α, nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB), IGF1R, IGFBP2, sterol response element-binding protein (SREBP), and phosphatidylinositol-4,5-bisphosphate 3-kinase, catalytic subunit alpha (PI3KCA) after the treatment of cultured sebocytes with 10−7 M or 10−5 M IGF-1. Sebum production was evaluated after the treatment of cultured sebocytes with 10−7 M or 10−5 M IGF-1 using lipid analysis. Results The expression levels of IL-1β, IL-6, IL-8, and TNF-α in cultured sebocytes after treatment with 10−7 M or 10−5 M IGF-1 were increased. Increased gene expression levels of NF-κB in cultured sebocytes were also shown after 10−7 M or 10−5 M IGF-1 treatments. Gene expression of these inflammatory biomarkers was decreased after 10−7 M or 10−5 M IGF-1 treatment in the presence of 100 nM NF-κB inhibitor. Treatment with 10−7 M or 10−5 M IGF-1 increased the gene expression levels of IGF1R, IGFBP2, SREBP and PI3KCA in cultured sebocytes. Sebum production from cultured sebocytes treated with 10−7 M or 10−5 M IGF-1 was also increased. Conclusion It is suggestive that IGF-1 might be involved in the pathogenesis of acne by increasing both expression of inflammatory biomarkers and also sebum production in sebocytes.
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Affiliation(s)
- Hyojin Kim
- Department of Dermatology, Busan Paik Hospital, Inje University College of Medicine, Busan, Korea
| | - Sun Young Moon
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Mi Yeung Sohn
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Weon Ju Lee
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea
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Kim SJ, Kim HY, Park YA, Kim SH, Yoo SY, Lee JE, Moon SY. Factors influencing fatigue among mothers with hospitalized children: A structural equation model. J SPEC PEDIATR NURS 2017; 22. [PMID: 28093852 DOI: 10.1111/jspn.12171] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Accepted: 12/23/2016] [Indexed: 11/30/2022]
Abstract
PURPOSE The aim of this study was to identify the physiological, psychological, and situational factors affecting fatigue among mothers of hospitalized children. DESIGN AND METHODS This study used a cross-sectional descriptive design with a self-report questionnaire. Participants were 211 mothers with children younger than 6 years old who were admitted to general hospitals. Based on the theory of unpleasant symptoms, the physiological, psychological, and situational factors were tested using structural equation modeling. RESULTS Mothers' fatigue was influenced by physiological (β = .24), situational, and psychological factors (β = .17), and situational (β = .37) factors such as the mother's sleeping hours, the child's adaptation to hospitalization, anxiety and having support with their housework. These three factors explained 31.34% of the variance in fatigue. In particular, it was found that the psychological factors exacerbate the negative influence of the situational factors on fatigue. Moreover, the situational factors were most strongly related to mothers' fatigue, and they had an indirect effect via the psychological factors as a mediator. PRACTICE IMPLICATIONS It is necessary to implement a nursing intervention that targets the controllable factors such as anxiety and children's adaptation to hospitalization that were identified in this study. Pediatric nursing care should not be limited to treating children's illnesses, but should be extended to providing family-centered care.
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Affiliation(s)
- Shin Jeong Kim
- Department of Nursing, Hallym University, Chuncheon, South Korea
| | - Hye Young Kim
- Department of Nursing, Keimyung University, Daegu, South Korea
| | - Young Ae Park
- Department of Nursing, Jeju Tourism University, Aewol-eup, South Korea
| | - Sung Hee Kim
- Redcross College of Nursing, ChungAng University, Seoul, South Korea
| | - So Young Yoo
- Department of Nursing, Baekseok University, Cheonan, South Korea
| | - Jung Eun Lee
- Department of Emergency Medical Technician, Dongnam Health University, Suwon, South Korea
| | - Sun Young Moon
- Department of Nursing, Hallym University, Chuncheon, South Korea
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Moon SY, Eun DH, Jang YH, Lee SJ, Kim DW, Lee WJ. Primary Angiosarcoma of the Skin Presenting as Mild Erythema. Ann Dermatol 2017; 29:809-810. [PMID: 29200779 PMCID: PMC5705372 DOI: 10.5021/ad.2017.29.6.809] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Revised: 11/07/2016] [Accepted: 11/09/2016] [Indexed: 11/08/2022] Open
Affiliation(s)
- Sun Young Moon
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Dong Hyuk Eun
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Yong Hyun Jang
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Seok-Jong Lee
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Do Won Kim
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Weon Ju Lee
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Korea
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Jang YH, Jin M, Moon SY, Eun DH, Lee WJ, Lee SJ, Kim MK, Kim SH, Kim DW. Investigation on the role of necroptosis in alopecia areata: A preliminary study. J Am Acad Dermatol 2016; 75:436-9. [DOI: 10.1016/j.jaad.2016.03.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Revised: 03/08/2016] [Accepted: 03/16/2016] [Indexed: 11/26/2022]
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Jeon SJ, Min JK, Kwon SY, Kim JH, Moon SY, Lee KH, Kim JH, Choe WH, Cheon YK, Kim TH, Park HS. Portal biliopathy treated with endoscopic biliary stenting. Clin Mol Hepatol 2016; 22:172-6. [PMID: 27044769 PMCID: PMC4825162 DOI: 10.3350/cmh.2016.22.1.172] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Revised: 02/06/2015] [Accepted: 02/10/2015] [Indexed: 12/17/2022] Open
Abstract
Portal biliopathy is defined as abnormalities in the extra- and intrahepatic ducts and gallbladder of patients with portal hypertension. This condition is associated with extrahepatic venous obstruction and dilatation of the venous plexus of the common bile duct, resulting in mural irregularities and compression of the biliary tree. Most patients with portal biliopathy remain asymptomatic, but approximately 10% of them advance to symptomatic abdominal pain, jaundice, and fever. Magnetic resonance cholangiopancreatography and endoscopic retrograde cholangiopancreatography are currently used as diagnostic tools because they are noninvasive and can be used to assess the regularity, length, and degree of bile duct narrowing. Management of portal biliopathy is aimed at biliary decompression and reducing the portal pressure. Portal biliopathy has rarely been reported in Korea. We present a symptomatic case of portal biliopathy that was complicated by cholangitis and successfully treated with biliary endoscopic procedures.
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Affiliation(s)
- Sung Jin Jeon
- Department of Internal Medicine, Konkuk University Medical Center, Seoul, Korea
| | - Jae Ki Min
- Department of Internal Medicine, Konkuk University Medical Center, Seoul, Korea
| | - So Young Kwon
- Department of Internal Medicine, Konkuk University Medical Center, Seoul, Korea
| | - Jun Hyun Kim
- Department of Internal Medicine, Konkuk University Medical Center, Seoul, Korea
| | - Sun Young Moon
- Department of Internal Medicine, Konkuk University Medical Center, Seoul, Korea
| | - Kang Hoon Lee
- Department of Internal Medicine, Konkuk University Medical Center, Seoul, Korea
| | - Jeong Han Kim
- Department of Internal Medicine, Konkuk University Medical Center, Seoul, Korea
| | - Won Hyeok Choe
- Department of Internal Medicine, Konkuk University Medical Center, Seoul, Korea
| | - Young Koog Cheon
- Department of Internal Medicine, Konkuk University Medical Center, Seoul, Korea
| | - Tae Hyung Kim
- Department of Radiology, Konkuk University School of Medicine, Seoul, Korea
| | - Hee Sun Park
- Department of Radiology, Konkuk University School of Medicine, Seoul, Korea
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Moon SY, Lee WJ, Lee SJ, Kim DW, Jang YH. Urticarial dermatitis unresponsive to conventional treatment: a hidden sign of pancreatic cancer. Clin Exp Dermatol 2016; 41:322-4. [PMID: 26332077 DOI: 10.1111/ced.12755] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/03/2015] [Indexed: 11/30/2022]
Affiliation(s)
- S Y Moon
- Department of Dermatology, Kyungpook National University School of Medicine, 200, Dong duk-ro, Jung-gu, Daegu, 700-721, Republic of Korea
| | - W J Lee
- Department of Dermatology, Kyungpook National University School of Medicine, 200, Dong duk-ro, Jung-gu, Daegu, 700-721, Republic of Korea
| | - S-J Lee
- Department of Dermatology, Kyungpook National University School of Medicine, 200, Dong duk-ro, Jung-gu, Daegu, 700-721, Republic of Korea
| | - D W Kim
- Department of Dermatology, Kyungpook National University School of Medicine, 200, Dong duk-ro, Jung-gu, Daegu, 700-721, Republic of Korea
| | - Y H Jang
- Department of Dermatology, Kyungpook National University School of Medicine, 200, Dong duk-ro, Jung-gu, Daegu, 700-721, Republic of Korea.
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Moon SY, Lee WJ, Lee SJ, Kim DW, Jang YH. Pathological evidence of foreign body reaction induced by bee sting therapy. J Cutan Pathol 2016; 43:623-5. [DOI: 10.1111/cup.12681] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Accepted: 12/20/2015] [Indexed: 11/29/2022]
Affiliation(s)
- Sun Young Moon
- Department of Dermatology; Kyungpook National University School of Medicine; Daegu Republic of Korea
| | - Weon Ju Lee
- Department of Dermatology; Kyungpook National University School of Medicine; Daegu Republic of Korea
| | - Seok-Jong Lee
- Department of Dermatology; Kyungpook National University School of Medicine; Daegu Republic of Korea
| | - Do Won Kim
- Department of Dermatology; Kyungpook National University School of Medicine; Daegu Republic of Korea
| | - Yong Hyun Jang
- Department of Dermatology; Kyungpook National University School of Medicine; Daegu Republic of Korea
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Jang YH, Moon SY, Lee WJ, Lee SJ, Lee WK, Park BC, Kim H, Kim DW. Alopecia Areata Progression Index, a Scoring System for Evaluating Overall Hair Loss Activity in Alopecia Areata Patients with Pigmented Hair: A Development and Reliability Assessment. Dermatology 2016; 232:143-9. [PMID: 26757319 DOI: 10.1159/000442816] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Accepted: 11/16/2015] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND No scoring systems to evaluate overall hair loss activity in alopecia areata (AA) have been established. OBJECTIVE We sought to develop a measurement tool (Alopecia Areata Progression Index, AAPI) for the evaluation of overall hair loss activity in AA patients with pigmented hair. METHODS The scalp surface area was divided into 4 quadrants. In each quadrant, hair loss activity was scored on the basis of the percentage of alopecic area, clinical findings associated with hair loss. The AAPI was measured in 17 patients with different severities of AA. RESULTS Interobserver and intraobserver reliabilities were assessed by 4 investigators. A significant correlation of the total AAPI was found among the 4 investigators. In addition, intraobserver reliability was excellent, and interobserver reliability was statistically reliable. CONCLUSION The AAPI seems to represent a system capable of truly quantifying overall hair loss activity in AA patients with different severity, demonstrating trustworthy interobserver and intraobserver reliability.
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Affiliation(s)
- Yong Hyun Jang
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Republic of Korea
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Lee JS, Lee KA, Lee KH, Moon SY, Kim IA, Jeon SJ, Min JK, Kim HJ, Lee KY. Efficacy of epidermal growth factor receptor-tyrosine kinase inhibitors for patient with leptomeningeal metastasis of epidermal growth factor receptor mutant non-small cell lung cancer. Yeungnam Univ J Med 2016. [DOI: 10.12701/yujm.2016.33.1.64] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- Jong Sik Lee
- Department of Internal Medicine, Konkuk University School of Medicine, Seoul, Korea
| | - Kyung Ann Lee
- Department of Internal Medicine, Konkuk University School of Medicine, Seoul, Korea
| | - Kang Hoon Lee
- Department of Internal Medicine, Konkuk University School of Medicine, Seoul, Korea
| | - Sun Young Moon
- Department of Internal Medicine, Konkuk University School of Medicine, Seoul, Korea
| | - In Ae Kim
- Department of Internal Medicine, Konkuk University School of Medicine, Seoul, Korea
| | - Sung Jin Jeon
- Department of Internal Medicine, Konkuk University School of Medicine, Seoul, Korea
| | - Jae Ki Min
- Department of Internal Medicine, Konkuk University School of Medicine, Seoul, Korea
| | - Hee Joung Kim
- Department of Internal Medicine, Konkuk University School of Medicine, Seoul, Korea
| | - Kye Young Lee
- Department of Internal Medicine, Konkuk University School of Medicine, Seoul, Korea
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Lee KH, Moon SY, Kim IA, Kwon SY, Kim JH, Choe WH, Kwon YW. [A Case of Delayed-onset Multiple Metastatic Infection following Liver Abscess]. Korean J Gastroenterol 2015; 66:237-41. [PMID: 26493511 DOI: 10.4166/kjg.2015.66.4.237] [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] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Klebsiella pneumoniae liver abscess has a tendency to spread to distant sites early in the course of disease and to involve multiple organs synchronously. A 59-year-old male was admitted because of liver abscess accompanied by fever and abdominal pain. The patient underwent percutaneous catheter drainage and received intravenous antibiotics. Symptom relief was achieved after the treatment as well as marked reduction in the size of the abscess. Despite proper treatment of the liver abscess, however, patient developed multiple metastatic infections in a non-concurrent manner: left and right endophthalmitis, psoas abscess, and infectious spondylitis at 5, 23, 30 and 65 days after initial manifestations of liver abscess, respectively. Each infectious episode followed one another after resolution of the former one. For each episode of metastatic infections, the patient promptly underwent treatment with systemic and local antibiotics, interventional abscess drainage, and surgical treatments as needed. The patient fully recovered without sequelae after the use of intravenous antibiotics for an extended period of time. Herein, we report a case of K. pneumoniae liver abscess complicated with delayed-onset multiple metastatic infections.
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Affiliation(s)
- Kang Hoon Lee
- Department of Internal Medicine, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
| | - Sun Young Moon
- Department of Internal Medicine, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
| | - In Ae Kim
- Department of Internal Medicine, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
| | - So Young Kwon
- Department of Internal Medicine, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
| | - Jeong Han Kim
- Department of Internal Medicine, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
| | - Won Hyeok Choe
- Department of Internal Medicine, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
| | - Yong Wonn Kwon
- Department of Radiology, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, Korea
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Moon SY, Lee WJ, Lee SJ, Kim DW, Jang YH. Pityriasis versicolor atrophicans: Is it true atrophy or pseudoatrophy? J Cutan Pathol 2015; 43:187-9. [PMID: 26488217 DOI: 10.1111/cup.12596] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Revised: 06/17/2015] [Accepted: 06/28/2015] [Indexed: 11/27/2022]
Affiliation(s)
- Sun Young Moon
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Weon Ju Lee
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Seok-Jong Lee
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Do Won Kim
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Yong Hyun Jang
- Department of Dermatology, Kyungpook National University School of Medicine, Daegu, Republic of Korea
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Park JW, Moon SY, Lee JH, Park JK, Lee DS, Jung KC, Song YW, Lee EB. Bone marrow analysis of immune cells and apoptosis in patients with systemic lupus erythematosus. Lupus 2014; 23:975-85. [PMID: 24759630 DOI: 10.1177/0961203314531634] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
OBJECTIVES To examine the immune cell profile in the bone marrow of systemic lupus erythematosus (SLE) patients and to assess its clinical relevance. METHODS Sixteen bone marrow samples from 14 SLE patients were compared with seven healthy control samples. The numbers of immune cells and apoptotic cells in the bone marrow were examined by immunohistochemistry. The association between immune cell subsets and clinical features was investigated. RESULTS CD4+ T cells, macrophages and plasma cells were more common in the bone marrow of SLE patients than in healthy controls (p=0.001, p=0.004 and p<0.001, respectively). Greater numbers of CD4+ T cells and macrophages were associated with high-grade bone marrow damage. The percentage of apoptotic cells in bone marrow of SLE patients was significantly higher than that in controls (p<0.001) and was positively correlated with the number of plasmacytoid dendritic cells (p=0.013). Increased number of plasma cells along with high interleukin-6 expression was correlated with anti-double stranded DNA antibody levels and the SLE disease activity index (p=0.031 and 0.013, respectively). CONCLUSION Bone marrow from SLE patients showed a distinct immune cell profile and increased apoptosis. This, coupled with a correlation with disease activity, suggests that the bone marrow may play a critical role in the pathogenesis of SLE.
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Affiliation(s)
- J W Park
- Division of Rheumatology, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - S Y Moon
- Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - J H Lee
- Division of Rheumatology, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - J K Park
- Division of Rheumatology, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - D S Lee
- Department of Laboratory Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - K C Jung
- Department of Pathology, Seoul National University College of Medicine, Seoul, Korea
| | - Y W Song
- Division of Rheumatology, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - E B Lee
- Division of Rheumatology, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
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Gurung M, Rho JS, Lee YC, Kim HS, Moon SY, Yu BH, Lee JH, Jang CW, Chung SY, Cho IH, Jee HS, Choi SW, Heo JY, Lee JC. Emergence and spread of carbapenem-resistant Acinetobacter baumannii sequence type 191 in a Korean hospital. Infection, Genetics and Evolution 2013; 19:219-22. [DOI: 10.1016/j.meegid.2013.07.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Revised: 07/11/2013] [Accepted: 07/15/2013] [Indexed: 11/24/2022]
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Kim JJ, Choi YM, Hwang SS, Yoon SH, Lee GH, Chae SJ, Hwang KR, Moon SY. Association of the interferon-γ gene (CA)n repeat polymorphism with endometriosis. BJOG 2011; 118:1061-6. [PMID: 21477169 DOI: 10.1111/j.1471-0528.2011.02963.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
OBJECTIVE To investigate whether the interferon-γ (IFN-γ) gene (CA)(n) repeat polymorphism is associated with susceptibility to endometriosis. DESIGN Case-control study. SETTING University Department of Obstetrics and Gynaecology. POPULATION Women with (n = 622) and without (n = 442) endometriosis. METHODS Genotyping was performed by fluorescent polymerase chain reaction (PCR) and gene-scan analysis. MAIN OUTCOME MEASURES Genotype distribution and allele frequency of the dinucleotide (CA)(n) repeat polymorphism in the IFN-γ gene. RESULTS Seven alleles (12-18 repeats) of the IFN-γ gene (CA)(n) repeat polymorphism were found. In both patients with endometriosis and controls the most common allele was composed of 13 repeats, followed by an allele of 15 repeats, and then by an allele of 12 repeats. Patients with endometriosis had a significantly higher incidence of genotypes with alleles composed of fewer repeats (12-13 repeats), compared with the controls (92.0 versus 84.4%, respectively, P < 001). CONCLUSIONS Our results suggest that the (CA)(n) repeat polymorphism in the IFN-γ gene may be associated with a risk of endometriosis in the South Korean population.
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Affiliation(s)
- J J Kim
- Department of Obstetrics and Gynaecology, Seoul National University College of Medicine, Seoul, South Korea
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Affiliation(s)
- Nam Young Yang
- Associate Professor, Department of Nursing, Konyang University, Korea
| | - Sun Young Moon
- Associate Professor, Department of Nursing, Shin Heung College, Korea
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Kim SM, Kim SH, Lee JR, Jee BC, Ku SY, Suh CS, Choi YM, Kim JG, Moon SY. The effects of hormone therapy on metabolic risk factors in postmenopausal Korean women. Climacteric 2010; 14:66-74. [PMID: 20649504 DOI: 10.3109/13697137.2010.498593] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE We sought to assess the prevalence of metabolic syndrome (MetS) among Korean postmenopausal women and to investigate the effect of hormone therapy status and reproductive characteristics on body composition and MetS risk factors. STUDY DESIGN We performed a cross-sectional study involving a cohort of 2005 postmenopausal Korean women. We defined MetS using the modified National Cholesterol Education Program (NCEP) criteria proposed by the American Heart Association/National Heart, Lung, and Blood Institute guidelines. The criteria for abdominal obesity were adopted from the cut-offs suggested by the Korean Society for the Study of Obesity. Participants with three or more of the following conditions were classified as having MetS: waist circumference ≥ 85 cm; blood pressure ≥ 130/85 mmHg; fasting plasma triglycerides ≥ 150 mg/dl; high density lipoprotein cholesterol < 50 mg/dl; glucose ≥ 100 mg/dl and/or receiving treatment for their condition. RESULTS The prevalence of MetS was 22.1% in the study population and increased with age. After adjusting for age and related reproductive characteristics, it was found that ever-use of hormone therapy (prior or current) was associated with decreased risk of postmenopausal MetS. Among individual risk factors for MetS, current hormone therapy seemed to be associated with decreased prevalence of abdominal obesity and better glucose metabolism and prior use of hormone therapy were associated with lower risk of abdominal obesity and high blood pressure. CONCLUSION Postmenopausal hormone therapy is associated with decreased risk of MetS in postmenopausal Korean women.
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Affiliation(s)
- S M Kim
- Department of Obstetrics and Gynecology, College of Medicine, Seoul National University, 28 Yeongeon-dong, Jongno-gu, Seoul, Korea
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Yoshida T, Zhang Y, Rivera Rosado LA, Chen J, Khan T, Moon SY, Zhang B. Blockade of Rac1 activity induces G1 cell cycle arrest or apoptosis in breast cancer cells through downregulation of cyclin D1, survivin, and X-linked inhibitor of apoptosis protein. Mol Cancer Ther 2010; 9:1657-68. [PMID: 20515940 DOI: 10.1158/1535-7163.mct-09-0906] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Rac1 GTPase regulates a variety of signaling pathways that are implicated in malignant phenotypes. Here, we show that selective inhibition of Rac1 activity by the pharmacologic inhibitor NSC23766 suppressed cell growth in a panel of human breast cancer cell lines, whereas it had little toxicity to normal mammary epithelial cells. NSC23766 elicits its cytotoxicity via two distinct mechanisms in a cell line-dependent manner: induction of G(1) cell cycle arrest in cell lines (MDA-MB-231, MCF7, and T47D) that express retinoblastoma (Rb) protein or apoptosis in Rb-deficient MDA-MB-468 cells. In MDA-MB-231 cells, Rac1 inhibition induced G(1) cell cycle arrest through downregulation of cyclin D1 and subsequent dephosphorylation/inactivation of Rb. By contrast, MDA-MB-468 cells underwent substantial apoptosis that was associated with loss of antiapoptotic proteins survivin and X-linked inhibitor of apoptosis protein (XIAP). Rac1 knockdown by RNAi interference confirmed the specificity of NSC23766 and requirement for Rac1 in the regulation of cyclin D1, survivin, and XIAP in breast cancer cells. Further, NF-kappaB, but not c-Jun NH(2)-terminal kinase or p38 pathways, mediates the survival signal from Rac1. Overall, our results indicate that Rac1 plays a central role in breast cancer cell survival through regulation of NF-kappaB-dependent gene products.
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Affiliation(s)
- Tatsushi Yoshida
- Division of Therapeutic Proteins, Office of Biotechnology Products, Center for Drug, Evaluation and Research, Food and Drug Administration, Bethesda, Maryland 20892, USA
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Myung IS, Moon SY, Jeong IH, Lee SW, Lee YH, Shim HS. Bacterial Leaf Spot of Iceberg Lettuce Caused by Xanthomonas campestris pv. vitians Type B, a New Disease in South Korea. Plant Dis 2010; 94:790. [PMID: 30754343 DOI: 10.1094/pdis-94-6-0790b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In 2008 and 2009, a leaf spot of iceberg lettuce (Lactuca sativa var. capitata) was observed in two fields of Pyeongchang District and Jecheon City in South Korea, respectively. Disease incidence averaged 3.5% in the two fields. Symptoms on leaves included black, water-soaked, angular lesions with halos. Two bacterial isolates, BC2932 and BC3095, were recovered on trypticase soy agar (TSA) from lesions surface sterilized in 70% ethyl alcohol for 1 min. Both isolates had gram-negative, aerobic rods each with a single flagellum. Colonies on peptone sucrose agar were yellow and raised with smooth margins. Pathogenicity was evaluated on 3-week-old lettuce plants (cv. Avi). Bacteria were grown on TSA for 48 h at 28°C. A bacterial suspension in sterile distilled water (100 ml at 1 × 105 CFU/ml) was sprayed onto three plants for each isolate. Plants were maintained in a growth chamber at 28°C and 90% relative humidity. Isolates induced identical symptoms 3 days after inoculation as those originally observed in the fields. Pathogenicity of bacteria reisolated 10 days after inoculation from lesions surface sterilized in 70% ethyl alcohol was confirmed by inoculation as described above. No symptoms were observed on two control plants treated with sterile distilled water. Identity of bacteria reisolated from inoculated leaves was confirmed by PCR with specific primer set B162 (1). DNA of the original two isolates and 12 reisolates (two per inoculated plant) was amplified by PCR assay using Xanthomonas campestris pv. vitians Type B LMG938 (= BC2575) as a positive control treatment and X. axonopodis pv. vitians strain CFBP2538 (= BC2610) as a negative control treatment. The PCR amplicon for each of the 14 test isolates was identical in size to that of X. campestris pv. vitians Type B LMG938. No fragment of X. axonopodis pv. vitians CFBP2538 was amplified. Patterns of metabolic fingerprinting of the original two isolates were more similar to those of X. campestris pv. vitians Type B LMG938 than X. axonopodis pv. vitians CFBP2538 using Biolog Microbial Identification System Version 4.2 (Biolog Inc., Hayward, CA). X. campestris pv. vitians Type B LMG938, BC2932, and BC3095 were identified as X. campestris pv. pelargonii with a Biolog similarity index of 0.68, 0.45, and 0.78, respectively. Strain X. axonopodis pv. vitians CFBP2538 was identified as X. campestris pv. juglandis with an index of 0.48. The dnaK (958 bp), gyrB (859 bp), and rpoD (884 bp) regions were partially sequenced to aid in identification of the two original field isolates as well as X. campestris pv. vitians Type B LMG 938 and X. axonopodis pv. vitians CFBP2538 using reported PCR primers (3). Sequences were compared with those of reference strains of Xanthomonas in GenBank. Sequences of the three genes from the two lettuce field isolates shared 100% similarity to those of the genes of X. campestris pv. vitians Type B LMG938 and had a distance index value of 0.040, 0.099, and 0.046, respectively, with the reference strain of X. axonopodis pv. vitians CFBP2538 determined by p-distance modeling using MEGA Version 4.1 (2). Based on the pathogenicity test and sequence analyses, the isolates were identified as X. campestris pv. vitians Type B. To our knowledge, this is the first report of bacterial leaf spot of iceberg lettuce caused by X. campestris pv. vitians Type B in South Korea. References: (1) J. D. Barak et al. Plant Dis. 85:169, 2001. (2) K. Tamura et al. Mol. Biol. Evol. 24:1596, 2007. (3) J. M. Young et al. Syst. Appl. Microbiol. 31:366, 2008.
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Affiliation(s)
- I-S Myung
- Agricultural Microbiology Division, National Academy of Agricultural Science, Rural Development Administration, Suwon 441-707, South Korea
| | - S Y Moon
- Agricultural Microbiology Division, National Academy of Agricultural Science, Rural Development Administration, Suwon 441-707, South Korea
| | - I H Jeong
- Agricultural Microbiology Division, National Academy of Agricultural Science, Rural Development Administration, Suwon 441-707, South Korea
| | - S W Lee
- Agricultural Microbiology Division, National Academy of Agricultural Science, Rural Development Administration, Suwon 441-707, South Korea
| | - Y H Lee
- Agricultural Microbiology Division, National Academy of Agricultural Science, Rural Development Administration, Suwon 441-707, South Korea
| | - H S Shim
- Agricultural Microbiology Division, National Academy of Agricultural Science, Rural Development Administration, Suwon 441-707, South Korea
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Myung IS, Jeong IH, Moon SY, Lee SW, Shim HS. A New Disease, Arboricola Leaf Spot of Bell Pepper, Caused by Xanthomonas arboricola. Plant Dis 2010; 94:271. [PMID: 30754279 DOI: 10.1094/pdis-94-2-0271c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In June 2007, a leaf spot disease was observed on seedlings of bell pepper (Capsicum annuum L. var. angulosum) in a commercial greenhouse in Iksan City, Korea. Symptoms on leaves included small, irregularly shaped, brown lesions with yellow halos and marginal necrosis. Four bacterial isolates, BC2526, BC2527, BC2528, and BC2529, were obtained from the diseased plants. The isolates were gram-negative aerobic rods with a single flagellum. On peptone sucrose agar, colonies were yellow and raised with smooth margins. Pathogenicity was confirmed by spraying cell suspensions containing 106 CFU/ml onto seedlings of bell pepper (cv. Fieste), tomato (Solanum lycopersicon cv. Seokwang), and hot pepper (Capsicum annuum cv. Daekwang) in a greenhouse maintained at 26 ± 3°C. The isolates induced symptoms, spots, and margin blights on leaves of bell pepper, tomato, and hot pepper 2 weeks after inoculation. No symptoms were noted on the control plants inoculated with sterilized distilled water. The identity of the bacteria was confirmed with the Biolog Microbial Identification System, version 4.2 (Biolog Inc., Hayward, CA). The gyrB region was partially sequenced to aid in identification of four isolates using PCR primers reported by Parkinson et al. (1). A 701-bp fragment of the gyrB region from the isolates was compared with sequences of the reference strains of Xanthomonas available in the DDBL/EMBL/GenBank databases (4). The bacterial isolates clustered with Xanthomonas arboricola pathovars in a phylogenetic tree generated with the neighbor-joining method in MEGA (version 4.1) (3). The sequence of the gyrB from the isolates had distance indexes of 0.016, 0.014, 0.016, 0.013, 0.037, and 0.019 as determined by the Jukes-Cantor model (2) with sequences of the reference strains of X. arboricola pvs. pruni (EU498953), celebensis (EU498984), corylina (EU499002), juglandis (EU 498951), populi (EU 499035), and a X. arboricola strain from bell pepper (EU 499039) (4), respectively. To our knowledge, this is the first report of a leaf disease on bell pepper caused by X. arboricola. We propose the name arboricola leaf spot for the disease. Further studies are required for determining pathovar status of the strain. Nucleotide sequence data reported are available under Accession Nos. GQ502678, GQ502679, GQ502680, and GQ502681 for gyrB of BC2626, BC2527, BC2528, and BC2923, respectively. The disease is expected to have a significant economic impact on tomato and pepper production in Korea. References: (1) N. Parkinson et al. Int. J. Syst. Evol. Microbiol. 59:264, 2009. (2) N. Saitou and M. Nei. Mol. Biol. Evol. 4:406, 1987. (3) K. Tamura et al. Mol. Biol. Evol. 24:1596, 2007. (4) J. M. Young et al. Syst. Appl. Microbiol. 31:366, 2008.
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Affiliation(s)
- I-S Myung
- Agricultural Microbiology Division, National Academy of Agricultural Science, Rural Development Administration, Suwon 441-707, Korea
| | - I H Jeong
- Agricultural Microbiology Division, National Academy of Agricultural Science, Rural Development Administration, Suwon 441-707, Korea
| | - S Y Moon
- Agricultural Microbiology Division, National Academy of Agricultural Science, Rural Development Administration, Suwon 441-707, Korea
| | - S W Lee
- Agricultural Microbiology Division, National Academy of Agricultural Science, Rural Development Administration, Suwon 441-707, Korea
| | - H S Shim
- Agricultural Microbiology Division, National Academy of Agricultural Science, Rural Development Administration, Suwon 441-707, Korea
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Myung IS, Moon SY, Jeong IH, Lee YK, Lee YH, Ra DS. Bacterial Spot of Tomato Caused by Xanthomonas perforans, a New Disease in Korea. Plant Dis 2009; 93:1349. [PMID: 30759533 DOI: 10.1094/pdis-93-12-1349b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In July 2007, a leaf spot was observed on seedlings of tomato (Solanum lycopersicum) in a commercial greenhouse in Sungju County, Korea. Symptoms were dark, circular-to-irregular, water-soaked spots surrounded by chlorotic halos. Affected leaves turned yellow and readily detached. Two bacterial isolates, BC2642 and BC2923, were obtained from leaf lesions. The isolates were gram-negative, aerobic rods with a single flagellum. On peptone sucrose agar, colonies were yellow and raised with smooth margins. Starch and pectate hydrolysis tests were positive. Pathogenicity was confirmed by spraying cell suspensions containing 108 CFU/ml on seedlings of tomato (cv. Seokwang) and hot pepper (Capsicum annuum cv. Daekwang) in a greenhouse maintained at 28 ± 2°C. The isolates induced similar symptoms as those originally observed on tomato and also caused spots and a marginal blight of leaves of pepper 2 weeks after inoculation. No symptoms were noted on the control plants sprayed with sterilized distilled water. The identity of bacteria reisolated from spots on leaves of both plants were confirmed by comparison of patterns of metabolite fingerprints with those from preliminary identification of the isolates using the Biolog Microbial Identification System, version 4.2 (Biolog Inc., Hayward, CA), and reinoculation of the seedlings as above. The 16S rRNA gene (rrs) and the intergenic spacer (IGS) located between the rrs and the 23S rRNA gene, and partial sequences of gyrB were sequenced to aid in the identification of the isolates (1-3). A 2,134-bp fragment of the rrs and IGS regions and 701-bp fragment of the gyrB region from isolates BC2642 and BC2923 were compared with sequences in GenBank. Sequences from both isolates shared 100% similarity to sequences of Xanthomonas perforans (Genbank Accession No. AF123091). On the basis of the sequences and other assays, the two isolates were identified as X. perforans. To our knowledge, this is the first report of bacterial spot of tomato caused by X. perforans in Korea. Nucleotide sequence data reported are available under Accession Nos. GQ461739 and GQ461740 for rrs and IGS of BC2642 and BC2923, respectively, and GQ368187 and GQ380567 for gyrB of BC2642 and BC2923, respectively. An outbreak of this disease in the greenhouse may be due to the use of tomato seeds harvested in foreign countries where spot is known to occur. The disease is expected to have a significant economic impact on tomato culture in Korea. References: (1) J. B. Jones et al. Int. J. Syst. Evol. Microbiol. 50:1211, 2000. (2) N. Parkinson et al. Int. J. Syst. Evol. Microbiol. 59:264, 2009. (3) J. M. Young et al. Syst. Appl. Microbiol. 31:366, 2008.
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Affiliation(s)
- I-S Myung
- Agricultural Microbiology Division, National Academy of Agricultural Science, Rural Development Administration, Suwon 441-707, Korea
| | - S Y Moon
- Agricultural Microbiology Division, National Academy of Agricultural Science, Rural Development Administration, Suwon 441-707, Korea
| | - I H Jeong
- Agricultural Microbiology Division, National Academy of Agricultural Science, Rural Development Administration, Suwon 441-707, Korea
| | - Y-K Lee
- Agricultural Microbiology Division, National Academy of Agricultural Science, Rural Development Administration, Suwon 441-707, Korea
| | - Y H Lee
- Agricultural Microbiology Division, National Academy of Agricultural Science, Rural Development Administration, Suwon 441-707, Korea
| | - D S Ra
- Agricultural Microbiology Division, National Academy of Agricultural Science, Rural Development Administration, Suwon 441-707, Korea
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Lim TS, Yong SW, Moon SY. Repetitive lumbar punctures as treatment for normal pressure hydrocephalus. Eur Neurol 2009; 62:293-7. [PMID: 19713705 DOI: 10.1159/000235808] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2009] [Accepted: 07/13/2009] [Indexed: 11/19/2022]
Abstract
Selected normal pressure hydrocephalus (NPH) patients cannot be treated by shunt operation because of the procedure's high complication rate. We have treated cases in which prolonged clinical improvement of NPH was experienced after one or two lumbar punctures (LPs). We evaluated the predictors of prolonged improvement of NPH symptoms by repeated LP. Thirty-one NPH patients were retrospectively evaluated (age 72.5 +/- 5.8 years). Gait disturbance, urinary incontinence, and cognitive impairment were semiquantified. We divided the patients into three groups (non-responders, temporary responders, and prolonged responders) according to their responses after LP. We analyzed the characteristics of the groups. Gait disturbance (p = 0.046) and urinary incontinence (p = 0.040) scores and total NPH symptom score (p = 0.007) after cerebrospinal fluid drainage were more significantly improved in prolonged responders than in temporary responders. On multiple logistic regression analyses, total NPH score improvement was the only predictor of the prolonged responders (p = 0.03, odds ratio 0.148). Our study showed that some NPH patients could maintain favorable courses for at least 1 year after LP without shunt operation. Repeated LP could be an alternative treatment in selected NPH patients.
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Affiliation(s)
- T S Lim
- Department of Neurology, Ajou University School of Medicine, Yeongtong-Gu, Suwon, South Korea
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Zhang Y, Rivera Rosado LA, Moon SY, Zhang B. Silencing of D4-GDI inhibits growth and invasive behavior in MDA-MB-231 cells by activation of Rac-dependent p38 and JNK signaling. J Biol Chem 2009; 284:12956-65. [PMID: 19269969 DOI: 10.1074/jbc.m807845200] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The Rho GDP dissociation inhibitor D4-GDI is overexpressed in some human breast cancer cell lines (Zhang, Y., and Zhang, B. (2006) Cancer Res. 66, 5592-5598). Here, we show that silencing of D4-GDI by RNA interference abrogates tumor growth and lung metastasis of otherwise highly invasive MDA-MB-231 breast cancer cells. Under anchorage-independent culture conditions, D4-GDI-depleted cells undergo rapid apoptosis (anoikis), which is known to hinder metastasis. We also found that D4-GDI associates with Rac1 and Rac3 in breast cancer cells, but not with other Rho GTPases tested (Cdc42, RhoA, RhoC, and TC10). Silencing of D4-GDI results in constitutive Rac1 activation and translocation from the cytosol to cellular membrane compartments and in sustained activation of p38 and JNK kinases. Rac1 blockade inhibits p38/JNK kinase activities and the spontaneous anoikis of D4-GDI knockdown cells. These results suggest that D4-GDI regulates cell function by interacting primarily with Rac GTPases and may play an integral role in breast cancer tumorigenesis. D4-GDI could prove to be a potential new target for therapeutic intervention.
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Affiliation(s)
- Yaqin Zhang
- Division of Therapeutic Proteins, Office of Biotechnology Products, Center for Drug Evaluation and Research, Food and Drug Administration, Bethesda, MD 20892, USA
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Moon SY, Lee BH, Seo SW, Kang SJ, Na DL. Slow vertical saccades in the frontotemporal dementia with motor neuron disease. J Neurol 2008; 255:1337-43. [PMID: 18825435 DOI: 10.1007/s00415-008-0890-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2007] [Revised: 12/10/2007] [Accepted: 02/01/2008] [Indexed: 02/02/2023]
Abstract
BACKGROUND Ocular motor abnormalities play an important role in differential diagnoses of Pick complex diseases. OBJECTIVES We evaluated how frequently supranuclear vertical saccadic impairment was observed in patients with frontotemporal dementia with motor neuron disease (FTD-MND). In addition, we tried to characterize their vertical saccadic abnormalities. MATERIALS AND METHODS Eleven patients with FTD-MND were recruited. Supranuclear vertical saccadic impairment on gross examination was defined as slow saccades with or without reduction in the final amplitude of the movement accompanied by intact oculocephalic reflex. We also recorded their saccades in 6 out of 11 patients using 2-dimensional videooculography (VOG). We measured the amplitude and peak velocity of each saccade. RESULTS On bedside examination, supranuclear vertical saccadic impairment was observed in 9 of 11 patients. One of the two remaining patients could not be evaluated due to poor cooperation and the other showed normal saccades. Five of nine patients with ocular abnormalities and one patient with normal saccade on gross examination underwent the VOG studies. The results showed that all the five patients with gross ocular abnormalities, compared with age-matched controls, had slowing of vertical saccades. Three out of five patients also showed slowing even in the large horizontal saccades. CONCLUSIONS Our results showed that slow vertical saccades are common in FTDMND. FTD-MND could be another disease that affects vertical gaze among Pick complex disease. Future pathologic studies are needed to confirm the involvement of the burst neurons in the dorsal midbrain in patients with FTDMND.
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Affiliation(s)
- S Y Moon
- Dept. of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Ilwon-dong, Kangnam-ku, Seoul, 135-710, Korea
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Abstract
No study adopted the statistical parametric mapping (SPM) analyses of (18)F-fluorodeoxy glucose (FDG) PET in a large number of patients with oculopalatal tremor (OPT). To determine regional cerebral glucose metabolism in patients with OPT, nine patients with OPT underwent FDG-PET of the brain. Their glucose metabolism was compared with that of 50 normal controls (NC) by using SPM analyses. Three patients had bilateral and six showed unilateral pseudohypertrophic degeneration of the inferior olivary nucleus (ION) on MRI. Compared with NC, OPT patients did not show any metabolic derangement in the anterolateral medulla where the pseudohypertrophic ION locates. Instead, six patients with unilateral ION changes had hypometabolism in ipsilesional pontine tegmentum and hypermetabolism in contralesional thalamus. Their metabolic changes did not depend on the lateralization of ION changes. Our study failed to present any metabolic evidence for the role of ION in the generation of OPT. In part, the failure might originate from the different pathomechanism between OPT and pure palatal tremor or sensitivity/specificity issues of PET and SPM analyses. But, our results suggest that impaired cell groups of the paramedian tract and thalamic tremor cells may contribute to the generation of OPT.
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Affiliation(s)
- S Y Moon
- Department of Neurology, Seoul National University College of Medicine, Seoul, Korea
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Abstract
OBJECTIVE Unilateral temporoparietal injury may result in an attentional deficit for stimuli presented in contralesional space. Thus, bilateral temporoparietal degeneration associated with Alzheimer disease (AD) might result in a bilateral attentional disturbance. Tests for hemispatial neglect, however, primarily assess spatial attentional asymmetries, and a bilateral attentional disorder might not be detected with these tests. The goal of this study was to learn whether optokinetic stimulation (OKS) would perturb the balanced attentional deficits of AD patients and alter their spatial allocation of attention. METHODS In Experiment I, 10 AD patients with bilateral temporoparietal glucose hypometabolism on PET and 10 controls bisected lines in two conditions: stationary solid lines superimposed on a moving background and "striped lines" where the whole line was stationary but the stripes within the line moved. The background OKS or the stripes within the line moved leftward or rightward or were stationary. In Experiment II, to investigate whether the influence of background movements would increase with AD severity, we conducted a similar experiment in 56 patients with various stages of AD. RESULTS In Experiment I, the line bisection errors (LBEs) of AD subjects, but not of the controls, were markedly influenced by both background and within line stripe motions, deviations occurring in the same direction of movement. In Experiment II, LBEs also occurred in the same direction as background movement and increased with dementia severity. CONCLUSIONS These results demonstrate that patients with Alzheimer disease are spatially distracted by moving stimuli.
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Affiliation(s)
- E J Kim
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Ilwon-dong, Kangnam-gu, Seoul, Republic of Korea
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Abstract
OBJECTIVE To determine patterns of nystagmus in oculopalatal tremor (OPT, also designated oculopalatal myoclonus) and correlate them with MRI changes in the inferior olivary nuclei (ION). Mixed torsional-vertical pendular nystagmus (PN) in OPT has been considered to signify unilateral brainstem damage and symmetric vertical nystagmus considered to indicate bilateral disease. METHODS Ocular oscillations were analyzed in 22 patients with OPT, 20 from focal brainstem lesions, with or without cerebellar lesions, and two from the progressive ataxia and palatal tremor syndrome. MRI was performed in all patients. RESULTS Patients had mainly vertical oscillations with varied combinations of torsional and horizontal components. Fourteen patients had binocular symmetry of PN and eight showed dissociated PN. MRI demonstrated ION signal change, unilateral in 14 and bilateral in eight. Unilateral olivary changes were associated with symmetric PN in six and with dissociated nystagmus in eight patients. Bilateral olivary changes were visible in eight patients with symmetric nystagmus. Dissociated PN was associated with MR pseudohypertrophy of ION on the side of the eye with greater vertical amplitude of oscillation. Notably, four patients never developed palatal tremor despite ION signal change. OPT resolved in one patient after 20 years and was markedly reduced in another patients after 6 years. CONCLUSIONS Dissociated pendular nystagmus predicted asymmetric (unilateral) inferior olivary pseudohypertrophy on MRI with accuracy, but symmetric pendular nystagmus was associated with either unilateral or bilateral signal changes in the inferior olivary nucleus. Instability of eye velocity to position integration from damage to the paramedian tract projections and denervation of the dorsal cap of the inferior olive are proposed mechanisms of the pendular nystagmus.
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Affiliation(s)
- J S Kim
- Division of Neurology, University Health Network, University of Toronot, Toronto, ON, Canada
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Abstract
p200 RhoGAP, a member of the Rho GTPase-activating protein (RhoGAP) family, was previously implicated in the regulation of neurite outgrowth through its RhoGAP activity. Here we show that ectopic expression of p200 RhoGAP stimulates fibroblast cell proliferation and cell cycle progression, leading to transformation. The morphology of the foci induced by p200 RhoGAP is distinct from that formed by Rac or Rho activation but similar to that induced by oncogenic Ras, raising the possibility that p200 RhoGAP may engage Ras signaling. Expression of p200 RhoGAP results in a significant increase of Ras-GTP and the activation of two downstream signaling pathways of Ras, ERK1/2 and phosphatidylinositol 3-kinase. Inhibition of Ras or ERK1/2, but not phosphatidylinositol 3-kinase, effectively suppresses the foci formation induced by p200 RhoGAP, suggesting that the Ras-ERK pathway is required for p200 RhoGAP-mediated cell transformation. p200 RhoGAP co-localizes with p120 RasGAP in cells and forms a complex with p120 RasGAP, and this interaction is mediated by the C-terminal region and the Src homology 3 domain of p200 RhoGAP and p120 RasGAP, respectively. Mutations of p200 RhoGAP that disrupt interaction with p120 RasGAP abolish its Ras activation and cell transforming activities. Interestingly, the RhoGAP activity of the N-terminal RhoGAP domain in p200 RhoGAP is also required for its full transforming activity, and expression of a dominant negative RhoA mutant that blocks RhoA cycling between the GDP- and GTP-bound states suppresses p200 RhoGAP transformation. These results suggest that a Rho GTPase-activating protein may have a positive input to cell proliferation and provide evidence that p200 RhoGAP can mediate cross-talks between Ras- and Rho-regulated signaling pathways in cell growth regulation.
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Affiliation(s)
- Xun Shang
- Division of Experimental Hematology, Children's Hospital Research Foundation, University of Cincinnati, Cincinnati, Ohio 45229, USA
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Lee SH, Lee BC, Moon SY, Choi YS, Jang NY, Watanabe Y. Evaluation of a MF membrane system composed of pre coagulation-sedimentation and chlorination for water reuse. Water Sci Technol 2006; 54:115-21. [PMID: 17165454 DOI: 10.2166/wst.2006.876] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
In this research, we investigated the variation of transmembrane pressure and permeate water quality in pre-coagulation and sedimentation with iron based coagulant, and chlorination of feed water for PVDF (Polyvinylidene fluoride) based MF membrane filtration. NaCIO was fed to the membrane module at a dosage of 0.5 mg/L and maintained during filtration. To observe the effect of raw water, three types of raw and processed waters, including river surface water, coagulated water and coagulated-settled water, were employed. In the case of river surface water, the transmembrane pressure increased abruptly in 500 hours operation. On the contrary, no significant increase in transmembrane pressure was observed for coagulated water and coagulated-settled water for 1200 hours operation. The turbidity of permeate was lower than the detection limit for all applied waters. The removal efficiency for humic substances in coagulated water and coagulated-settled water was approximately ten times higher than that in surface river water. And, the removal efficiency for TOC and DOC was approximately two times higher than that in surface river water. From the results of the operation, it can be observed that it is possible to maintain stable operation at 0.9 m(3)/m(2)-day filtration flux through a combination of pre-coagulation and pre-chlorination. However, the water quality of permeate was the best when the pre-coagulation-sedimentation process was combined with pre-chlorination. With respect to fouling reduction and operation efficiency increase in membrane filtration, the pre-coagulation/sedimentation process is a promising alternative.
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Affiliation(s)
- S H Lee
- Korea Institute of Science and Technology, P.O. Box 131, Cheongryang, Seoul, 130-650, South Korea
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Affiliation(s)
- J S Kim
- Department of Neurology, College of Medicine, Seoul National University, Seoul National University Bundang Hospital, 300 Gumi-dong, Bundang-gu, Seongnam-si, Gyeonggi-do, 463-707, Korea.
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Kim HY, Chung CS, Moon SY, Lee KH, Han SH. Complete Nonvisualization of Basilar Artery on MR Angiography in Patients with Vertebrobasilar Ischemic Stroke: Favorable Outcome Factors. Cerebrovasc Dis 2004; 18:269-76. [PMID: 15331872 DOI: 10.1159/000080351] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2003] [Accepted: 03/26/2004] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND In vertebrobasilar ischemic stroke, magnetic resonance angiography (MRA) occasionally fails to visualize the basilar artery, but in these patients, little attention has been given to establishing correlations between the clinical and the radiological findings. Our aim was to identify clinical or radiological measures that could assist in predicting a favorable clinical outcome. METHODS Risk factors, clinicoradiological features, and functional outcomes were assessed in 40 patients with vertebrobasilar ischemic stroke whose basilar arteries were absent on MRA. The presence of potential feeding arteries to the posterior circulation was recorded from a review of the MRA data. To permit quantitative analysis of the images, a potential feeding artery score (PFAS; range: 0-8) was established. One point was assigned when a signal was seen from an intracranial vertebral artery, a posterior inferior cerebellar artery, a superior cerebellar artery, or a posterior cerebral artery. On MRI, the location of the infarction was classified as involving the proximal, middle, and distal territories of the intracranial posterior circulation. The infarctions were also categorized as single- or multi-sector infarctions, and according to whether more than one penetrating or branch artery was involved. Clinical outcomes were classified as favorable (modified Rankin Scale = 0-2) or poor (modified Rankin Scale = 3-6). RESULTS The clinical outcome was favorable in 30% (n = 12) of patients, and poor in 70% (n = 28). A transient ischemic attack preceded the stroke in 48% of patients, especially those with a favorable outcome (67%). Patients with a favorable outcome had a higher PFAS (p = 0.036) and an increased incidence of single-sector infarction (p = 0.049). CONCLUSIONS Our study suggests that a higher PFAS, accompanied by a single-sector infarction, is a predictor of improved clinical outcome in patients with vertebrobasilar ischemic stroke in which the basilar artery was absent on MRA.
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Affiliation(s)
- H Y Kim
- Department of Neurology, Konkuk University School of Medicine, Seoul, Korea
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