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Kim JC, Choi MG, Park JS, Lee SY, Park CW, Chung BY, Misery L, Kim HO. Sensitive skin is associated with contact sensitization and decreased nociceptive threshold. J Eur Acad Dermatol Venereol 2024; 38:e125-e127. [PMID: 37556672 DOI: 10.1111/jdv.19398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 08/03/2023] [Indexed: 08/11/2023]
Affiliation(s)
- J C Kim
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, South Korea
| | - M G Choi
- Department of Computer Science, Kwangwoon University, Seoul, South Korea
| | - J S Park
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, South Korea
| | - S Y Lee
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, South Korea
| | - C W Park
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, South Korea
| | - B Y Chung
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, South Korea
| | - L Misery
- Department of Dermatology, University Hospital of Brest, Brest, France
| | - H O Kim
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, South Korea
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Jung M, Lee JB, Kim HS, Kwon WS, Kim HO, Kim S, Park M, Kim W, Choi KY, Oh T, Kang CY, Chung HC, Rha SY. First-in-Human Phase 1 Study of a B Cell- and Monocyte-Based Immunotherapeutic Vaccine against HER2-Positive Advanced Gastric Cancer. Cancer Res Treat 2024; 56:208-218. [PMID: 37402409 PMCID: PMC10789970 DOI: 10.4143/crt.2022.1328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Accepted: 06/26/2023] [Indexed: 07/06/2023] Open
Abstract
PURPOSE BVAC-B is an autologous B cell- and monocyte-based immunotherapeutic vaccine that contains cells transfected with a recombinant human epidermal growth factor receptor 2 (HER2) gene and loaded with the natural killer T cell ligand alpha-galactosylceramide. Here, we report the first BVAC-B study in patients with HER2-positive advanced gastric cancer. MATERIALS AND METHODS Patients with advanced gastric cancer refractory to standard treatment with HER2+ immunohistochemistry ≥ 1 were eligible for treatment. Patients were administered low (2.5×107 cells/dose), medium (5.0×107 cells/dose), or high dose (1.0×108 cells/dose) of BVAC-B intravenously four times every 4 weeks. Primary endpoints included safety and maximum tolerated BVAC-B dose. Secondary endpoints included preliminary clinical efficacy and BVAC-B-induced immune responses. RESULTS Eight patients were treated with BVAC-B at low (n=1), medium (n=1), and high doses (n=6). No dose-limiting toxicity was observed, while treatment-related adverse events (TRAEs) were observed in patients treated with medium and high doses. The most common TRAEs were grade 1 (n=2) and grade 2 (n=2) fever. Out of the six patients treated with high-dose BVAC-B, three had stable disease with no response. Interferon gamma, tumor necrosis factor-α, and interleukin-6 increased after BVAC-B treatment in all patients with medium and high dose, and HER2-specific antibody was detected in some patients. CONCLUSION BVAC-B monotherapy had a safe toxicity profile with limited clinical activity; however, it activated immune cells in heavily pretreated patients with HER2-positive gastric cancer. Earlier treatment with BVAC-B and combination therapy is warranted for evaluation of clinical efficacy.
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Affiliation(s)
- Minkyu Jung
- Division of Medical Oncology, Department of Internal Medicine, Yonsei Cancer Center, Yonsei University of College of Medicine, Seoul,
Korea
- Song-dang Institute for Cancer Research, Yonsei University College of Medicine, Seoul,
Korea
| | - Jii Bum Lee
- Division of Medical Oncology, Department of Internal Medicine, Yonsei Cancer Center, Yonsei University of College of Medicine, Seoul,
Korea
| | - Hyo Song Kim
- Division of Medical Oncology, Department of Internal Medicine, Yonsei Cancer Center, Yonsei University of College of Medicine, Seoul,
Korea
- Song-dang Institute for Cancer Research, Yonsei University College of Medicine, Seoul,
Korea
| | - Woo Sun Kwon
- Song-dang Institute for Cancer Research, Yonsei University College of Medicine, Seoul,
Korea
| | - Hyun Ok Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul,
Korea
| | - Sinyoung Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul,
Korea
| | | | | | | | | | - Chang-Yuil Kang
- Cellid, Inc., Seoul,
Korea
- Laboratory of Immunology, College of Pharmacy, Seoul National University, Seoul,
Korea
| | - Hyun Cheol Chung
- Division of Medical Oncology, Department of Internal Medicine, Yonsei Cancer Center, Yonsei University of College of Medicine, Seoul,
Korea
- Song-dang Institute for Cancer Research, Yonsei University College of Medicine, Seoul,
Korea
| | - Sun Young Rha
- Division of Medical Oncology, Department of Internal Medicine, Yonsei Cancer Center, Yonsei University of College of Medicine, Seoul,
Korea
- Song-dang Institute for Cancer Research, Yonsei University College of Medicine, Seoul,
Korea
- Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul,
Korea
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3
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Kwon H, Jung YJ, Lee Y, Son GH, Kim HO, Maeng YS, Kwon JY. Impaired Angiogenic Function of Fetal Endothelial Progenitor Cells via PCDH10 in Gestational Diabetes Mellitus. Int J Mol Sci 2023; 24:16082. [PMID: 38003275 PMCID: PMC10671254 DOI: 10.3390/ijms242216082] [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: 10/11/2023] [Revised: 11/06/2023] [Accepted: 11/07/2023] [Indexed: 11/26/2023] Open
Abstract
Maternal hyperglycemia, induced by gestational diabetes mellitus (GDM), has detrimental effects on fetal vascular development, ultimately increasing the risk of cardiovascular diseases in offspring. The potential underlying mechanisms through which these complications occur are due to functional impairment and epigenetic changes in fetal endothelial progenitor cells (EPCs), which remain less defined. We confirm that intrauterine hyperglycemia leads to the impaired angiogenic function of fetal EPCs, as observed through functional assays of outgrowth endothelial cells (OECs) derived from fetal EPCs of GDM pregnancies (GDM-EPCs). Notably, PCDH10 expression is increased in OECs derived from GDM-EPCs, which is associated with the inhibition of angiogenic function in fetal EPCs. Additionally, increased PCDH10 expression is correlated with the hypomethylation of the PCDH10 promoter. Our findings demonstrate that in utero exposure to GDM can induce angiogenic dysfunction in fetal EPCs through altered gene expression and epigenetic changes, consequently increasing the susceptibility to cardiovascular diseases in the offspring of GDM mothers.
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Affiliation(s)
- Hayan Kwon
- Department of Obstetrics and Gynecology, Institute of Women’s Life Medical Science, Yonsei University College of Medicine, Seoul 03722, Republic of Korea; (H.K.); (Y.J.J.); (Y.L.)
| | - Yun Ji Jung
- Department of Obstetrics and Gynecology, Institute of Women’s Life Medical Science, Yonsei University College of Medicine, Seoul 03722, Republic of Korea; (H.K.); (Y.J.J.); (Y.L.)
| | - Yeji Lee
- Department of Obstetrics and Gynecology, Institute of Women’s Life Medical Science, Yonsei University College of Medicine, Seoul 03722, Republic of Korea; (H.K.); (Y.J.J.); (Y.L.)
| | - Ga-Hyun Son
- Department of Obstetrics and Gynecology, Kangnam Sacred Heart Hospital, Hallym University Medical Center, Hallym University College of Medicine, Seoul 07441, Republic of Korea;
| | - Hyun Ok Kim
- Korea Cell-Based Artificial Blood Project, Regenerative Medicine Acceleration Foundation, Seoul 04512, Republic of Korea;
| | - Yong-Sun Maeng
- Department of Obstetrics and Gynecology, Institute of Women’s Life Medical Science, Yonsei University College of Medicine, Seoul 03722, Republic of Korea; (H.K.); (Y.J.J.); (Y.L.)
| | - Ja-Young Kwon
- Department of Obstetrics and Gynecology, Institute of Women’s Life Medical Science, Yonsei University College of Medicine, Seoul 03722, Republic of Korea; (H.K.); (Y.J.J.); (Y.L.)
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Kim HK, Cho S, Choi YS, Lee BS, Kim S, Kim HO, Park JH. Human Endometrium Derived Induced Pluripotent Stem Cells Are Amenable to Directed Erythroid Differentiation. Tissue Eng Regen Med 2023; 20:939-950. [PMID: 37452918 PMCID: PMC10519893 DOI: 10.1007/s13770-023-00554-9] [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: 12/02/2022] [Revised: 04/19/2023] [Accepted: 05/14/2023] [Indexed: 07/18/2023] Open
Abstract
BACKGROUND A protocol for using human endometrium derived induced pluripotent stem cells (iPSCs) to derive hematopoietic and erythroid lineages will be elaborated, through a two-phase culture system. METHODS Discarded endometrial tissues were obtained from women receiving hysterectomy in their 4th to 5th decade due to benign uterine conditions. pCE-Sox2, Oct4, Klf4, L-Myc and Lin28 episomal vectors were used to electrotransfect the endometrial stromal cells. The first 8 days involves commitment to hematopoietic stem cells through embryoid body with robust expansion on murine bone marrow stromal cells. The second phase involves feeder free conditions with hydrocortisone, stem cell factor, interleukin-3, and recombinant EPO. After 22 days of feeder free culture, the expression profiles of CD235a+, CD34+, CD43+ and CD 71+ were analyzed by flow cytometry and Wright-Giemsa staining for differential counting. The oxygen carrying capacity of cultured RBCs was measured using a hemoxanalyser. RESULTS As a result of inducing these cells via co-culture with murine stromal fibroblasts, all endometrium derived iPSCs were differentiated into erythroblasts with a stable yield of approximately 80% for polychromatic and orthochromatic normoblasts. The protocol for complete induction of erythroid lineage cells starting from human endometrial tissue via iPS cells has been optimized. CONCLUSION Successful directed erythroid differentiation has occurred from human endometrium-derived iPS cells. A comprehensive process of actually deriving iPS cells using discarded surgical hysterectomy specimens to the erythroid fate has significance in that the scope of using human iPSC cell lines for tissue regeneration could be expanded in the future.
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Affiliation(s)
- Hyun Kyung Kim
- Department of Obstetrics and Gynecology, Yongin Severance Hospital, Yonsei University College of Medicine, 363, Dongbaekjukjeon-Daero, Giheung, Yongin, 16995, Gyeonggi-Do, Republic of Korea
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - SiHyun Cho
- Department of Obstetrics and Gynecology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, 06273, Republic of Korea
- Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Young Sik Choi
- Department of Obstetrics and Gynecology, Severance Hospital, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Byung Seok Lee
- Department of Obstetrics and Gynecology, Severance Hospital, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Sinyoung Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Hyun Ok Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea
| | - Joo Hyun Park
- Department of Obstetrics and Gynecology, Yongin Severance Hospital, Yonsei University College of Medicine, 363, Dongbaekjukjeon-Daero, Giheung, Yongin, 16995, Gyeonggi-Do, Republic of Korea.
- Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea.
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Cho YK, Kim HK, Kwon SS, Jeon SH, Cheong JW, Nam KT, Kim HS, Kim S, Kim HO. In vitro erythrocyte production using human-induced pluripotent stem cells: determining the best hematopoietic stem cell sources. Stem Cell Res Ther 2023; 14:106. [PMID: 37101221 PMCID: PMC10132444 DOI: 10.1186/s13287-023-03305-8] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 03/28/2023] [Indexed: 04/28/2023] Open
Abstract
BACKGROUND Blood transfusion is an essential part of medicine. However, many countries have been facing a national blood crisis. To address this ongoing blood shortage issue, there have been efforts to generate red blood cells (RBCs) in vitro, especially from human-induced pluripotent stem cells (hiPSCs). However, the best source of hiPSCs for this purpose is yet to be determined. METHODS In this study, hiPSCs were established from three different hematopoietic stem cell sources-peripheral blood (PB), cord blood (CB) and bone marrow (BM) aspirates (n = 3 for each source)-using episomal reprogramming vectors and differentiated into functional RBCs. Various time-course studies including immunofluorescence assay, quantitative real-time PCR, flow cytometry, karyotyping, morphological analysis, oxygen binding capacity analysis, and RNA sequencing were performed to examine and compare the characteristics of hiPSCs and hiPSC-differentiated erythroid cells. RESULTS hiPSC lines were established from each of the three sources and were found to be pluripotent and have comparable characteristics. All hiPSCs differentiated into erythroid cells, but there were discrepancies in differentiation and maturation efficiencies: CB-derived hiPSCs matured into erythroid cells the fastest while PB-derived hiPSCs required a longer time for maturation but showed the highest degree of reproducibility. BM-derived hiPSCs gave rise to diverse types of cells and exhibited poor differentiation efficiency. Nonetheless, erythroid cells differentiated from all hiPSC lines mainly expressed fetal and/or embryonic hemoglobin, indicating that primitive erythropoiesis occurred. Their oxygen equilibrium curves were all left-shifted. CONCLUSIONS Collectively, both PB- and CB-derived hiPSCs were favorably reliable sources for the clinical production of RBCs in vitro, despite several challenges that need to be overcome. However, owing to the limited availability and the large amount of CB required to produce hiPSCs, and the results of this study, the advantages of using PB-derived hiPSCs for RBC production in vitro may outweigh those of using CB-derived hiPSCs. We believe that our findings will facilitate the selection of optimal hiPSC lines for RBC production in vitro in the near future.
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Affiliation(s)
- Youn Keong Cho
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Hyun-Kyung Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Soon Sung Kwon
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Su-Hee Jeon
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - June-Won Cheong
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Ki Taek Nam
- Severance Biomedical Science Institute, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Han-Soo Kim
- Department of Biomedical Sciences, Catholic Kwandong University College of Medical Convergence, Gangneung-si, Gangwon-do, Republic of Korea
| | - Sinyoung Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea.
| | - Hyun Ok Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea.
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Kwon SS, Kim S, Kim HO. Incidence and characteristics of hypotensive transfusion reaction: 10‐year experience in a single center. Transfusion 2022; 62:2245-2253. [DOI: 10.1111/trf.17099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 08/15/2022] [Accepted: 08/16/2022] [Indexed: 11/30/2022]
Affiliation(s)
- Soon Sung Kwon
- Department of Laboratory Medicine Yonsei University College of Medicine Seoul South Korea
| | - Sinyoung Kim
- Department of Laboratory Medicine Yonsei University College of Medicine Seoul South Korea
| | - Hyun Ok Kim
- Department of Laboratory Medicine Yonsei University College of Medicine Seoul South Korea
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7
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Roh J, Kim S, Cheong JW, Jeon SH, Kim HK, Kim MJ, Kim HO. Erythroid Differentiation of Induced Pluripotent Stem Cells Co-cultured with OP9 Cells for Diagnostic Purposes. Ann Lab Med 2022; 42:457-466. [PMID: 35177566 PMCID: PMC8859560 DOI: 10.3343/alm.2022.42.4.457] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 09/07/2021] [Accepted: 01/23/2022] [Indexed: 11/19/2022] Open
Abstract
Background Reagent red blood cells (RBCs) are prepared from donated whole blood, resulting in various combinations of blood group antigens. This inconsistency can be resolved by producing RBCs with uniform antigen expression. Induced pluripotent stem cells (iPSCs) generated directly from mature cells constitute an unlimited source for RBC production. We aimed to produce erythroid cells from iPSCs for diagnostic purposes. We hypothesized that cultured erythroid cells express surface antigens that can be recognized by blood group antibodies. Methods iPSCs were co-cultured with OP9 stromal cells to stimulate differentiation into the erythroid lineage. Cell differentiation was examined using microscopy and flow cytometry. Hemoglobin electrophoresis and oxygen-binding capacity testing were performed to verify that the cultured erythroid cells functioned normally. The agglutination reactions of the cultured erythroid cells to antibodies were investigated to confirm that the cells expressed blood group antigens. Results The generated iPSCs showed stemness characteristics and could differentiate into the erythroid lineage. As differentiation progressed, the proportion of nucleated RBCs increased. Hemoglobin electrophoresis revealed a sharp peak in the hemoglobin F region. The oxygen-binding capacity test results were similar between normal RBCs and cultured nucleated RBCs. ABO and Rh-Hr blood grouping confirmed similar antigen expression between the donor RBCs and cultured nucleated RBCs. Conclusions We generated blood group antigen-expressing nucleated RBCs from iPSCs co-cultured with OP9 cells that can be used for diagnostic purposes. iPSCs from rare blood group donors could serve as an unlimited source for reagent production.
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Affiliation(s)
- Juhye Roh
- Department of Laboratory Medicine, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Sinyoung Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - June-Won Cheong
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Su-Hee Jeon
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Hyun-Kyung Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Moon Jung Kim
- Department of Laboratory Medicine, Myongji Hospital, Goyang, Korea
| | - Hyun Ok Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
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Abstract
Blood is lifesaving; however, it can neither be limitlessly acquired nor artificially produced. The supply and use of blood, as an invaluable biological commodity, necessitate systematic and rational management under governmental guidance to ensure safe and reliable transfusions. Despite Korea’s blood donation rate of 5.04%, which is higher than the 3.15% in high-income countries as reported by the WHO, the demand for blood exceeds the availability. This is due to the birthrate decline, dearth of young donors, and growing and aging recipient population. This review outlines the Korean blood management system, with a focus on blood service data from 2020, with the aim to delineate the current state of Korea’s blood management system and the policies established to address the imminent blood shortage. Each policy is described in detail to provide helpful information for blood management services in other countries.
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Affiliation(s)
- Hyun Ok Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
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Kang SY, Choi MG, Wei ET, Selescu T, Lee SY, Kim JC, Chung BY, Park CW, Kim HO. TRPM8 agonist (cryosim-1) gel for scalp itch: A randomized, vehicle controlled clinical trial. J Eur Acad Dermatol Venereol 2022; 36:e588-e589. [PMID: 35293031 DOI: 10.1111/jdv.18080] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- S Y Kang
- Department of Dermatology, Kangnam Sacred Heart Hospital, Hallym University, Seoul, Korea
| | - M G Choi
- Department of Computer Science and Engineering, Kwangwoon University, Seoul, Korea
| | - E T Wei
- School of Public Health, University of California, Berkeley, CA, 94720, USA
| | - T Selescu
- Department of Anatomy, Physiology and Biophysics, Faculty of Biology, University of Bucharest, Bucuresti, Romania
| | - S Y Lee
- Department of Dermatology, Kangnam Sacred Heart Hospital, Hallym University, Seoul, Korea
| | - J C Kim
- Department of Dermatology, Kangnam Sacred Heart Hospital, Hallym University, Seoul, Korea
| | - B Y Chung
- Department of Dermatology, Kangnam Sacred Heart Hospital, Hallym University, Seoul, Korea
| | - C W Park
- Department of Dermatology, Kangnam Sacred Heart Hospital, Hallym University, Seoul, Korea
| | - H O Kim
- Department of Dermatology, Kangnam Sacred Heart Hospital, Hallym University, Seoul, Korea
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Hong S, Kim JE, Cho JM, Choi HC, Won JH, Na JB, Choi DS, Park MJ, Choi HY, Shin HS, Cho HC, Kim HO. Quantification of liver extracellular volume using dual-energy CT for ruling out high-risk varices in cirrhosis. Eur J Radiol 2022; 148:110151. [PMID: 35032849 DOI: 10.1016/j.ejrad.2022.110151] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 12/10/2021] [Accepted: 01/03/2022] [Indexed: 11/03/2022]
Abstract
PURPOSE To determine the performance of quantification of liver extracellular volume fraction (fECV) using dual-energy CT (DECT) compared with CT imaging for ruling out high-riskesophageal varices(HRV) in cirrhotic patients. METHODS We retrospectively analyzed 229 cirrhotic patients (training [n = 159] and internal validation cohorts [n = 70]) who underwent dual-source DECT, serum marker assessment, and esophagogastroduodenoscopy (EGD) from 2017 to 2020. The fECV score was measured using iodine maps from 3-minute delayed, equilibrium-phase images at 100/140 Sn kVp. The association of CT parameters and serum markers with HRV was investigated. Criteria combining the fECV score (≤ 25.1%) or CT imaging with platelet count (> 150,000/mm3) were created and compared to rule out HRV. RESULTS In the training cohort, the fECV score (odds ratio (OR), 1.20; 95% confidence interval (CI), 1.09, 1.32) and CT imaging (OR, 28.21; 95% CI, 9.31, 85.93) were independent predictors of HRV, along with platelet count (OR, 0.85 and 0.78). Criteria combining the fECV score with platelet count showed significantly better performance than those combining CT imaging with platelet count in ruling out HRV (p < 0.001). Applying the criteria could have safely avoided an additional 10.7% and 8.6% of EGDs in the training and validation cohorts, respectively, achieving a final value of 36.5% and 35.7% spared EGDs (0 HRV missed) compared to CT imaging with platelet count. CONCLUSIONS The combined DECT-based fECV score with platelet count is useful for ruling out HRV and can safely avoid more EGDs than CT imaging with platelet count.
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Affiliation(s)
- Seokjin Hong
- Department of Radiology, Gyeongsang National University College of Medicine and Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - Ji Eun Kim
- Department of Radiology, Gyeongsang National University College of Medicine and Gyeongsang National University Hospital, Jinju, Republic of Korea.
| | - Jae Min Cho
- Department of Radiology, Gyeongsang National University College of Medicine and Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - Ho Cheol Choi
- Department of Radiology, Gyeongsang National University College of Medicine and Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - Jung Ho Won
- Department of Radiology, Gyeongsang National University College of Medicine and Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - Jae Beom Na
- Department of Radiology, Gyeongsang National University College of Medicine and Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - Dae Seob Choi
- Department of Radiology, Gyeongsang National University College of Medicine and Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - Mi Jung Park
- Department of Radiology, Gyeongsang National University College of Medicine and Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - Hye Young Choi
- Department of Radiology, Gyeongsang National University College of Medicine and Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - Hwa Seon Shin
- Department of Radiology, Gyeongsang National University College of Medicine and Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - Hyun Chin Cho
- Department of Internal Medicine, Gyeongsang National University College of Medicine and Gyeongsang National University Hospital, Jinju, Republic of Korea
| | - Hyun Ok Kim
- Department of Internal Medicine, Gyeongsang National University College of Medicine and Gyeongsang National University Changwon Hospital, Changwon, Republic of Korea
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Bong JH, Park JH, Sung JS, Lee CK, Lee GY, Kang MJ, Kim HO, Pyun JC. Rapid Analysis of Bacterial Contamination in Platelets without Pre-Enrichment Using Pig Serum-Derived Antibodies. ACS Appl Bio Mater 2021; 4:7779-7789. [DOI: 10.1021/acsabm.1c00538] [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: 11/30/2022]
Affiliation(s)
- Ji-Hong Bong
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul 03722, Korea
| | - Jun-Hee Park
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul 03722, Korea
| | - Jeong Soo Sung
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul 03722, Korea
| | - Chang Kyu Lee
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul 03722, Korea
| | - Ga-Yeon Lee
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul 03722, Korea
| | - Min-Jung Kang
- Korea Institute of Science and Technology (KIST), Seoul 02792, Korea
| | - Hyun Ok Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul 03722, Korea
| | - Jae-Chul Pyun
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul 03722, Korea
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12
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Kim JC, Lee SY, Kang SY, Kim HO, Park CW, Chung BY. Erythema annulare centrifugum induced by COVID-19 vaccination. Clin Exp Dermatol 2021; 47:591-592. [PMID: 34731529 PMCID: PMC8652630 DOI: 10.1111/ced.15002] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 09/03/2021] [Revised: 10/27/2021] [Accepted: 11/01/2021] [Indexed: 12/19/2022]
Affiliation(s)
- J C Kim
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - S Y Lee
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - S Y Kang
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - H O Kim
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - C W Park
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - B Y Chung
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
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13
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Chung MK, Kim SS, Cheon YH, Hong SJ, Choi HJ, Seo MR, Hwang J, Ahn JK, Lee SH, Min HK, Cha HS, Lee SS, Lee J, Moon KW, Lee CK, Kim HO, Suh YS, Shim SC, Kang SW, Kim J, Choi ST, Song JS, Lee J. Patient Perspectives and Preferences Regarding Gout and Gout Management: Impact on Adherence. J Korean Med Sci 2021; 36:e208. [PMID: 34402226 PMCID: PMC8369315 DOI: 10.3346/jkms.2021.36.e208] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 07/01/2021] [Indexed: 12/04/2022] Open
Abstract
BACKGROUND Patient-centered management is becoming increasingly important in gout, but there are limited studies exploring patients' perspectives and preferences. We aimed to investigate patients' perspectives and preferences regarding gout and gout management, and their impacts on adherence to urate lowering therapy (ULT). METHODS A paper-based survey was performed in patients with gout seen at the rheumatology outpatient clinics of 16 tertiary hospitals. The survey included questions regarding demographics, comorbidities, gout attacks, current treatment and adherence, and patients' perspectives and preferences regarding gout and gout management. Multivariate regression analysis was performed to determine the factors associated with ULT adherence. RESULTS Of 809 surveyed patients with gout, 755 (94.5%) were using ULT. Among those using ULT, 89.1% had ≥ 80% adherence to ULT. Majority of the patients knew management strategies to some extent (94.8%), perceived gout as a life-long disease (91.2%), and were making efforts toward practicing at least one lifestyle modification (89.2%). Most patients (71.9%) obtained information about gout management during their clinic visits. Approximately half of the patients (53.6%) preferred managing their disease with both ULT and lifestyle modification, 28.4% preferred ULT only, and 17.4% preferred lifestyle modification only. Adherence was better in patients with older age (odds ratio [OR], 1.03), those with better knowledge of gout management strategies (OR, 3.56), and those who had preference for ULT (OR, 2.07). CONCLUSION Patients' perspectives and management preferences had high impacts on adherence to ULT in gout. Consideration of patients' perspectives and preferences is important for achieving the desired clinical outcome in gout.
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Affiliation(s)
- Min Kyung Chung
- Division of Rheumatology, Department of Internal Medicine, Ewha Womans University College of Medicine, Seoul, Korea
| | - Sung Soo Kim
- Division of Rheumatology, Department of Internal Medicine, Gangneung Asan Hospital, University of Ulsan College of Medicine, Gangneung, Korea
| | - Yun Hong Cheon
- Division of Rheumatology, Department of Internal Medicine, Gyeongsang National University Hospital, Jinju, Korea
| | - Seung Jae Hong
- Division of Rheumatology, Department of Internal Medicine, Kyung Hee University Hospital, School of Medicine, Kyung Hee University, Seoul, Korea
| | - Hyo Jin Choi
- Division of Rheumatology, Department of Internal Medicine, Gil Medical Center, Gachon University College of Medicine, Incheon, Korea
| | - Mi Ryoung Seo
- Division of Rheumatology, Department of Internal Medicine, Gil Medical Center, Gachon University College of Medicine, Incheon, Korea
| | - Jiwon Hwang
- Division of Rheumatology, Department of Internal Medicine, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, Korea
| | - Joong Kyong Ahn
- Division of Rheumatology, Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Sang Heon Lee
- Division of Rheumatology, Department of Internal Medicine, Konkuk University Medical Center, Seoul, Korea
| | - Hong Ki Min
- Division of Rheumatology, Department of Internal Medicine, Konkuk University Medical Center, Seoul, Korea
| | - Hoon Suk Cha
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Shin Seok Lee
- Division of Rheumatology, Department of Internal Medicine, Chonnam National University Medical School & Hospital, Gwangju, Korea
| | - Jennifer Lee
- Division of Rheumatology, Department of Internal Medicine, College of Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - Ki Won Moon
- Division of Rheumatology, Department of Internal Medicine, Kangwon National University School of Medicine, Chuncheon, Korea
| | - Chang Keun Lee
- Division of Rheumatology, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Hyun Ok Kim
- Division of Rheumatology, Department of Internal Medicine, Gyeongsang National University College of Medicine, Jinju, Korea
| | - Young Sun Suh
- Division of Rheumatology, Department of Internal Medicine, Gyeongsang National University College of Medicine, Jinju, Korea
| | - Seung Cheol Shim
- Division of Rheumatology, Department of Internal Medicine, School of Medicine, Chungnam National University, Chungnam National University Hospital, Daejeon, Korea
| | - Seong Wook Kang
- Division of Rheumatology, Department of Internal Medicine, School of Medicine, Chungnam National University, Chungnam National University Hospital, Daejeon, Korea
| | - Jinhyun Kim
- Division of Rheumatology, Department of Internal Medicine, School of Medicine, Chungnam National University, Chungnam National University Hospital, Daejeon, Korea
| | - Sang Tae Choi
- Division of Rheumatology, Department of Internal Medicine, Chung-Ang University School of Medicine, Seoul, Korea
| | - Jung Soo Song
- Division of Rheumatology, Department of Internal Medicine, Chung-Ang University School of Medicine, Seoul, Korea.
| | - Jisoo Lee
- Division of Rheumatology, Department of Internal Medicine, Ewha Womans University College of Medicine, Seoul, Korea.
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14
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Cho MJ, Kim YJ, Kim MJ, Kim YS, Park E, Choi KH, Kang JY, Kim HO, Koong MK, Kim YS, Yoon TK, Ko JJ, Lee JH. P–205 Epothilone D as an actin cytoskeleton stabilizer improved mitochondria bioenergenesis and blastocyst formation of mouse preimplantation embryo. Hum Reprod 2021. [DOI: 10.1093/humrep/deab130.204] [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: 11/14/2022] Open
Abstract
Abstract
Study question
What is primary factor of bioenergetics product activity between microtubule instability and the functional activity of mitochondria in embryo?
Summary answer
The actin cytoskeleton instability is presumably the primary cause for the bioenergenesis of mitochondrial function to the preimplantation embryo development.
What is known already
Mitochondria are cellular organelles dynamically moving and morphological changes. It provides for homeostatic energy to the cell. The dynamic property of the mitochondria is associated with the microtubule network in the cell. However, the stability of the microtubule was clearly identified for preimplantation embryo development.
Study design, size, duration
This study is designed to assess the ATP productivity of the mitochondria, and specifically to observe what its primary factor is in terms of providing microtubule stability in mammalian cells. Additionally, we investigated the relationship between blastocyst formation and actin cytoskeleton stabilization by EpD with 2-cell mice.
Participants/materials, setting, methods
We prepared the microtubule stability regulation model with the HEK293 cell line by using the microtubule stabilizer as an Epothilone D (EpD). Then we analyzed the metabolic activity of the cells through oxidative phosphorylation (OXP) ratios analysis. Also, we performed confocal live imaging to observe mitochondria morphology depending on the cells’ microtubule. Next, we treated EpD to 2-cell culture media for the analysis of blastocyst development ratios.
Main results and the role of chance
EpD significantly increased fusion form. Also, EpD enhance bioenergy ratios like OXP in the mitochondria and functional activity related marker, like mTOR compared with the control. These results suggest that microtubule stabilization enhances mitochondrial metabolism by increasing oxygen consumption. Also, EpD in 2-cell culture media led to a significant increase in the speed of development and 50% higher hatched out blastocyst formation ratios compared to the control group.
Limitations, reasons for caution
This study had limited animal experiments. For the next study, we are planning with an aim to improve the quality and development ratios of human embryos by EpD.
Wider implications of the findings: Microtubule stabilizer has a possibility to recover the mitochondria’s functional activity in the preimplantation embryo development. Mitochondrial functional activity along the actin cytoskeleton may play a pivotal role in determining the embryo quality and development ratios for archive pregnancy.
Trial registration number
non-clinical trials
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Affiliation(s)
- M J Cho
- CHA University, Biomedical Sciences, Seoul, Korea- South
| | - Y J Kim
- CHA Medical Group, Reproductive and Molecular Medicine, Seoul, Korea- South
| | - M J Kim
- CHA Fertility Center Seoul Station, Clinic, Seoul, Korea- South
| | - Y S Kim
- CHA Fertility Center Seoul Station, Clinic, Seoul, Korea- South
| | - E Park
- CHA Fertility Center Seoul Station, Embryology lab, Seoul, Korea- South
| | - K H Choi
- CHA Fertility Center Seoul Station, Embryology lab, Seoul, Korea- South
| | - J Y Kang
- CHA Fertility Center Seoul Station, Embryology lab, Seoul, Korea- South
| | - H O Kim
- CHA Fertility Center Seoul Station, Clinic, Seoul, Korea- South
| | - M K Koong
- CHA Fertility Center Seoul Station, Clinic, Seoul, Korea- South
| | - Y S Kim
- CHA Fertility Center Seoul Station, Clinic, Seoul, Korea- South
| | - T K Yoon
- CHA Fertility Center Seoul Station, Clinic, Seoul, Korea- South
| | - J J Ko
- CHA University, Biomedical Sciences, Seoul, Korea- South
| | - J H Lee
- CHA fertility seoul center seoul sequare 3floor, Reproductive and Molecular Medicine., Seoul, Korea- South
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15
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Choi KH, Kim YJ, Kang KY, Park EA, Kim YS, Kim MJ, Kim HO, Koong MK, Kim YS, Yoon TK, Ko JJ, Lee JH. P–657 Prostaglandin D2 is correlated with follicles development and a reliable marker of ovarian reserve of poor ovarian responder patients. Hum Reprod 2021. [DOI: 10.1093/humrep/deab130.656] [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: 11/14/2022] Open
Abstract
Abstract
Study question
Is the prostaglandin D2 (PGD2) associated with growing follicles and ovarian reserve of poor ovarian responders?
Summary answer
PGD2 is correlated with ovarian stimulation activity and follicle growth. Especially, poor ovarian responders show a significant decrease in the level of follicular fluid.
What is known already
Prostaglandins (PGs) are involved in the female reproductive process, mainly ovulation, fertilization, and implantation.
Study design, size, duration
We investigated the PGD2 level in the follicular fluid of poor ovarian responders. The collection of human follicular fluid was approved by the Institutional Research and Ethical Committees of CHA University (approval number: 1044308–201611-BR–027–04) from January to December 2019. Follicular fluid was collected from patients with normal ovarian response and patients with POR.
Participants/materials, setting, methods
We studied whether prostaglandin has related to POR in the clinical key factor by measuring human follicular fluid. Follicular fluid was collected from patients with normal ovarian response and patients with POR. The concentration of PGD2 in follicular fluid was determined with ELISA kits following the manufacturer’s protocol.
Main results and the role of chance
We analyzed the level of PGD2 in the follicular fluid of patients with normal ovarian response and patients with POR using an ELISA. The PGD2 concentration was significantly lower in the follicular fluid of patients with POR than in the follicular fluid of young and old patients with normal ovarian response.
Limitations, reasons for caution
This study has an identification of biomarker of the clinical samples as POR criteria patients. Therefore, further investigations aimed at specific recovery of low PGD2 metabolic activity in the CCs during control ovarian stimulation.
Wider implications of the findings: Until now there is no specific biomarker of POR. AMH is just an ovary reserve marker for an indication of ovary function. PGD2 is one of the metabolites in steroid metabolism in the ovary. Therefore, we can find some cure through further study for improved PGD2 production to POR patients.
Trial registration number
none
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Affiliation(s)
- K H Choi
- CHA Fertility Center Seoul Station, Embryology Lab, Seoul, Korea- South
| | - Y J Kim
- CHA Medical Group, Advanced Research Division of Reproductive Medicine, Seoul, Korea- South
| | - K Y Kang
- CHA Fertility Center Seoul Station, Embryology Lab, Seoul, Korea- South
| | - E A Park
- CHA Fertility Center Seoul Station, Embryology Lab, Seoul, Korea- South
| | - Y S Kim
- CHA Fertility Center Seoul Station, IVF clinic, Seoul, Korea- South
| | - M J Kim
- CHA Fertility Center Seoul Station, IVF clinic, Seoul, Korea- South
| | - H O Kim
- CHA Fertility Center Seoul Station, IVF clinic, Seoul, Korea- South
| | - M K Koong
- CHA Fertility Center Seoul Station, IVF clinic, Seoul, Korea- South
| | - Y S Kim
- CHA Fertility Center Seoul Station, IVF clinic, Seoul, Korea- South
| | - T K Yoon
- CHA Fertility Center Seoul Station, IVF clinic, Seoul, Korea- South
| | - J J Ko
- CHA University, Biomedical Science, Pocheon-si, Korea- South
| | - J H Lee
- CHA Fertility Center Seoul Station, Embryology Lab, Seoul, Korea- South
- CHA University, Biomedical Science, Pocheon-si, Korea- South
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16
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Kim YJ, Choi KH, Kang KY, Park EA, Kim YS, Kim MJ, Kim HO, Koong MK, Kim YS, Yoon TK, Ko JJ, Lee JH. P–658 Lovastatin promotes the expression of LDL receptor and enhances E2 production in the cumulus cells. Hum Reprod 2021. [DOI: 10.1093/humrep/deab130.657] [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: 11/15/2022] Open
Abstract
Abstract
Study question
Lovastatin enhanced E2 productive ratios in the cumulus cells through promoted expression of Low-density lipoprotein receptor (LDLR).
Summary answer
Lovastatin up-regulated gene expression of LDLR in the CCs. And the high expression of LDLR promoted E2 productive ratios from CCs.
What is known already
We already reported that the up-regulation of LDLR correlated with clinical pregnancy. Therefore, we found lovastatin as an up-regulator of LDLR expression of clinical pregnancy.
Study design, size, duration
This is an expended study of LDLR to enhance steroidogenesis regarding the effect of lovastatin in the CCs. The collection of human cumulus cells was approved by the Institutional Research and Ethical Committees of CHA University (approval number: 1044308–201611-BR–027–04) from January to December 2019. The CCs were collected from 12 patients with normal ovarian response after oocyte denudation for ICSI.
Participants/materials, setting, methods
We studied whether lovastatin has up-regulated LDLR expression in human CCs. Cumulus cells were collected from patients with young (∼ 36) and old aged patients (37 ∼). After culturing human CCs, they were treated lovastatin for one day. The concentration of E2 in culture medium was measured using Chemiluminescence immunoassay. The mRNA isolated from CCs was analyzed gene expression level through real time-PCR.
Main results and the role of chance
The concentration of E2 was significantly increased in the culture medium treated with lovastatin. The CCs treated with lovastatin increased the expression of LDLR and StAR which are components of the steroidogenesis pathway.
Limitations, reasons for caution
We have found that the role of lovastatin promotes the E2 production by increasing the ldlr gene of CCs. Therefore, further investigations aimed at lovastatin effect on human oocytes embryo whether enhanced quality of oocytes or not.
Wider implications of the findings: Previous data show that high activation of LDLR and StAR was associated with embryo quality and clinical pregnancy in infertile women. Our data suggest that lovastatin is stimulated LDLR expression to enhanced pregnancy ratios of IVF patients.
Trial registration number
none
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Affiliation(s)
- Y J Kim
- CHA Medical Group, Advanced Research Division of Reproductive Medicine, Seoul, Korea- South
| | - K H Choi
- CHA Fertility Center Seoul Station, Embryology Lab, Seoul, Korea- South
| | - K Y Kang
- CHA Fertility Center Seoul Station, Embryology Lab, Seoul, Korea- South
| | - E A Park
- CHA Fertility Center Seoul Station, Embryology Lab, Seoul, Korea- South
| | - Y S Kim
- CHA Fertility Center Seoul Station, IVF clinic, Seoul, Korea- South
| | - M J Kim
- CHA Fertility Center Seoul Station, IVF clinic, Seoul, Korea- South
| | - H O Kim
- CHA Fertility Center Seoul Station, IVF clinic, Seoul, Korea- South
| | - M K Koong
- CHA Fertility Center Seoul Station, IVF clinic, Seoul, Korea- South
| | - Y S Kim
- CHA Fertility Center Seoul Station, IVF clinic, Seoul, Korea- South
| | - T K Yoon
- CHA Fertility Center Seoul Station, IVF clinic, Seoul, Korea- South
| | - J J Ko
- CHA University, Biomedical Science, Pocheon-si, Korea- South
| | - J H Lee
- CHA Fertility Center Seoul Station, Embryology Lab, Seoul, Korea- South
- CHA University, Biomedical Science, Pocheon-si, Korea- South
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17
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Choi SY, Hong JY, Kim HJ, Lee GY, Cheong SH, Jung HJ, Bang CH, Lee DH, Jue MS, Kim HO, Park EJ, Ko JY, Son SW. Mask-induced dermatoses during the COVID-19 pandemic: a questionnaire-based study in 12 Korean hospitals. Clin Exp Dermatol 2021; 46:1504-1510. [PMID: 34081799 PMCID: PMC8239570 DOI: 10.1111/ced.14776] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 05/20/2021] [Accepted: 05/31/2021] [Indexed: 12/18/2022]
Abstract
BACKGROUND During the coronavirus disease 2019 (COVID-19) pandemic, various adverse skin reactions to long-term mask wearing have been reported. AIM To assess the clinical features of mask-induced dermatoses and to recommend prevention and treatment options. METHODS From April to August 2020, questionnaires including topics such as demographic information, pre-existing skin disorders, reported mask-related symptoms, daily mask-wearing duration and frequency, types of masks used and whether the participant was a healthcare worker, were distributed to patients in 12 hospitals. Dermatologists assessed skin lesions, confirmed diagnosis and recorded treatments. RESULTS Itchiness was the most frequent symptom, mostly affecting the cheeks. The most common skin disease was new-onset contact dermatitis (33.94%), followed by new-onset acne (16.97%) and worsening of pre-existing acne (16.97%). Daily wearing of masks was significantly (P = 0.02) associated with new-onset contact dermatitis. More than half of patients with pre-existing skin problems experienced disease worsening while wearing masks. Longer duration of wearing (> 6 h/day, P = 0.04) and use of cotton masks (P < 0.001) significantly increased acne flare-up. Healthcare workers had a higher incidence of skin disease. Skin lesions were generally mild and well tolerated with topical treatment. The study had some limitations: the effect of seasonal characteristics and other risk factors were not assessed, and the patients were visiting dermatological clinics and had interest in their skin status, thus, there may have been selection bias. CONCLUSION Mask-induced/-triggered dermatoses contribute to increase the dermatological burden during the pandemic.
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Affiliation(s)
- S Y Choi
- Department of Dermatology, Ilsan Paik Hospital, Inje University College of Medicine, Seoul, Korea
| | - J Y Hong
- Department of Dermatology, Chungnam National University Sejong Hospital, Chungnam National University College of Medicine, Sejong, Korea
| | - H J Kim
- Department of Dermatology, Gachon University Gil Medical Center, Gachon University College of Medicine, Incheon, Korea
| | - G-Y Lee
- Department of Dermatology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - S H Cheong
- Department of Dermatology, Konyang University, Daejeon, Korea
| | - H J Jung
- Department of Dermatology, National Medical Center, Seoul, Korea
| | - C H Bang
- Department of Dermatology, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - D H Lee
- Department of Dermatology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - M-S Jue
- Department of Dermatology, Veterans Health Service Medical Center, Seoul, Korea
| | - H O Kim
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Seoul, Korea
| | - E J Park
- Department of Dermatology, College of Medicine, Hallym University, Seoul, Korea
| | - J Y Ko
- Department of Dermatology, Hanyang University College of Medicine and Hanyang University Seoul Hospital, Seoul, Korea
| | - S W Son
- Department of Dermatology, Korea University College of Medicine, Seoul, Korea
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18
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Kim HO, Kim JC, Chung BY, Kang SY, Park CW, Han JH. Harlequin syndrome with petechiae caused by a pituitary adenoma. J Eur Acad Dermatol Venereol 2021; 35:e605-e607. [PMID: 33974308 DOI: 10.1111/jdv.17338] [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: 11/29/2022]
Affiliation(s)
- H O Kim
- Department of Dermatology, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - J C Kim
- Department of Dermatology, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - B Y Chung
- Department of Dermatology, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - S Y Kang
- Department of Dermatology, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - C W Park
- Department of Dermatology, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - J H Han
- Department of Neurosurgery, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
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19
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Bong JH, Kim TH, Jung J, Lee SJ, Sung JS, Lee CK, Kang MJ, Kim HO, Pyun JC. Competitive Immunoassay of SARS-CoV-2 Using Pig Sera-Derived Anti-SARS-CoV-2 Antibodies. Biochip J 2021; 15:100-108. [PMID: 33613853 PMCID: PMC7887419 DOI: 10.1007/s13206-021-00011-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 11/20/2020] [Accepted: 01/04/2021] [Indexed: 11/10/2022]
Abstract
Anti-severe acute respiratory syndrome coronavirus 2 (anti-SARS-CoV-2) nucleoprotein (NP) antibodies were isolated from pig sera using human SARS-CoV-2 NP-immobilized magnetic beads. The binding properties of the isolated antibodies against SARS-CoV-2 NP were tested via flow cytometry using SARS-CoV-2 NP-immobilized magnetic beads. A competitive immunoassay was developed for detecting SARS-CoV-2 NP as well as SARS-CoV-2 in the culture fluid using magnetic beads with immobilized anti-SARS-CoV-2 NP antibodies. Selectivity tests were carried out during the competitive immunoassay for SARS-CoV, MERS-CoV, and CoV strain 229E in the culture fluid.
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Affiliation(s)
- Ji-Hong Bong
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul, 03722 Republic of Korea
| | - Tae-Hun Kim
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul, 03722 Republic of Korea
| | - Jaeyong Jung
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul, 03722 Republic of Korea
| | - Soo Jeong Lee
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul, 03722 Republic of Korea
| | - Jeong Soo Sung
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul, 03722 Republic of Korea
| | - Chang Kyu Lee
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul, 03722 Republic of Korea
| | - Min-Jung Kang
- Molecular Recognition Research Center, Korea Institute of Science and Technology (KIST), 5 Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792 Republic of Korea
| | - Hyun Ok Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, 50-1 Yonsei-Ro, Seodaemun-Gu, Seoul, 03722 Republic of Korea
| | - Jae-Chul Pyun
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul, 03722 Republic of Korea
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20
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Bong JH, Kim HR, Jung J, Park JH, Sung JS, Lee CK, Choi KH, Shin SS, Kang MJ, Kim HO, Lee DY, Pyun JC. Switching-peptides for one-step immunoassay and its application to the diagnosis of human hepatitis B. Biosens Bioelectron 2021; 178:112996. [PMID: 33524706 DOI: 10.1016/j.bios.2021.112996] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 01/05/2021] [Accepted: 01/10/2021] [Indexed: 11/15/2022]
Abstract
Herein, we present switching-peptides for a one-step immunoassay, without the need for additional antibody treatment or washing steps to detect antigen-antibody interactions. Fluorescently labeled switching-peptides were dissociated from the immobilized antibody soon after the antigens were bound to the binding pockets. In this study, four different parts of the antibody (IgG) frame regions were chemically synthesized, and these peptides were bound to immobilized antibodies as switching-peptides. We presented the design principle of switching-peptides and used Pymol software, based on the changes in thermodynamic parameters, to study the interaction between antibodies and switching-peptides. The binding properties of switching-peptides were analyzed based on Förster resonance energy transfer between switching-peptides as well as between switching-peptides and antibodies (IgGs) isolated from different animals. The binding constants of the four switching-peptides to antibodies were estimated to be in the range of 1.48-3.29 μM. Finally, the feasibility of using switching-peptides for the quantitative one-step immunoassay was demonstrated by human hepatitis B surface antigen (hHBsAg) detection and statistical comparison of the assay results with those of conventional ELISA. The limit of detection for HBsAg was determined to be 56 ng/mL, and the dynamic range was estimated to be 136 ng/mL-33 μg/mL. These results demonstrate the feasibility of the one-step immunoassay for HBsAg.
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Affiliation(s)
- Ji-Hong Bong
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul, 03722, Republic of Korea
| | - Hong-Rae Kim
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul, 03722, Republic of Korea
| | - Jaeyong Jung
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul, 03722, Republic of Korea
| | - Jun-Hee Park
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul, 03722, Republic of Korea
| | - Jeong Soo Sung
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul, 03722, Republic of Korea
| | - Chang Kyu Lee
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul, 03722, Republic of Korea
| | - Kyung-Hak Choi
- OPTOLANE Technologies Inc., 20 Pangyoyeok-ro 241beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, 13494, Republic of Korea
| | - Seong-Shick Shin
- OPTOLANE Technologies Inc., 20 Pangyoyeok-ro 241beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, 13494, Republic of Korea
| | - Min-Jung Kang
- Korea Institute of Science and Technology (KIST), 5 Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792, Republic of Korea
| | - Hyun Ok Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, 50-1 Yonsei-Ro, Seodaemun-Gu, Seoul, 03722, Republic of Korea
| | - Do Young Lee
- OPTOLANE Technologies Inc., 20 Pangyoyeok-ro 241beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, 13494, Republic of Korea
| | - Jae-Chul Pyun
- Department of Materials Science and Engineering, Yonsei University, 50 Yonsei-Ro, Seodaemun-Gu, Seoul, 03722, Republic of Korea.
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21
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Takeshita A, Watanabe H, Yamada C, Nadarajan VS, Permpikul P, Sinkitjasub A, Natalie CPH, Zhao S, Han KS, Kim DW, Suh JS, Kim HO, Kawabata K, Ishimaru K, Ohtomo N, Yamada N, Tomoda Y, Yurugi K, Ohto H. Erythrocyte Alloimmunity and Genetic Variance: Results from the Collaborative Study of Alloimmunity to Antigen Diversity in Asian Populations (All ADP). Transfus Apher Sci 2020; 59:102944. [PMID: 33228922 DOI: 10.1016/j.transci.2020.102944] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
As an East-Asian international study, we evaluated erythrocyte alloimmunity by gender and history of transfusion or pregnancy. In total, data from more than 1,826,000 patients were analyzed, from whom 26,170 irregular erythrocyte antibodies were detected in 22,653 cases. Antibody frequencies in these cases were as follows: anti-E, 26.8%; anti-Lea, 20.0%; anti-P1, 7.1%; anti-M, 6.4%; anti-Mia, 5.6%; anti-c + E, 5.6%; anti-Leb, 4.6%; anti-D, 2.8%; anti-Fyb, 2.6%; anti-Lea+Leb, 2.5%; anti-Dia, 2.0%; and others. For pregnant patients, anti-D (12.7%) was statistically more frequent. For transfused patients, anti-E (37.3%), anti-c + E (9.5%), anti-C + e (3.3%) and anti-Jka (3.1%) were significantly more frequent.
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Affiliation(s)
- Akihiro Takeshita
- Transfusion and Cell Therapy, Hamamatsu University School of Medicine, Hamamatsu, Japan.
| | - Hiroko Watanabe
- Transfusion and Cell Therapy, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Chiaki Yamada
- Transfusion and Cell Therapy, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | | | - Parichart Permpikul
- Transfusion Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Attapong Sinkitjasub
- Blood Bank, Taksin Hospital, Medical Service Department of Bangkok Metropolitan, Bangkok, Thailand
| | - Chan Pui Ha Natalie
- Blood Bank, Prince of Wales Hospital, Hong Kong Special Administrative Region
| | - Shuming Zhao
- Transfusion Medicine, Southwest Hospital, Third Military Medical University, Chongqing, China
| | | | - Dae Won Kim
- Laboratory Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Soul, South Korea
| | - Jang Soo Suh
- Laboratory Medicine, Kyungpook National University Hospital, Kyungpook National University, School of Medicine, Daegu, South Korea
| | - Hyun Ok Kim
- Laboratory Medicine, Yonsei University College of Medicine, Soul, South Korea
| | - Kinuyo Kawabata
- Blood Transfusion and Transplantation Immunology, Fukushima Medical University, Fukushima, Japan
| | - Ken Ishimaru
- Blood Service Headquarters, Japanese Red Cross Society, Tokyo, Japan
| | - Naoki Ohtomo
- Center for Transfusion Medicine and Cell Therapy, Tokyo Medical and Dental University, Tokyo, Japan
| | - Naotomo Yamada
- Department of Transfusion Medicine, Saga University, Saga, Japan
| | - Yutaka Tomoda
- Laboratory Medicine, Asahikawa Medical University, Asahikawa, Japan
| | - Kimiko Yurugi
- Clinical Laboratory, Kyoto University Hospital, Kyoto, Japan
| | - Hitoshi Ohto
- Blood Service Headquarters, Japanese Red Cross Society, Tokyo, Japan
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22
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Park YJ, Jeon SH, Kim HK, Suh EJ, Choi SJ, Kim S, Kim HO. Human induced pluripotent stem cell line banking for the production of rare blood type erythrocytes. J Transl Med 2020; 18:236. [PMID: 32532292 PMCID: PMC7291485 DOI: 10.1186/s12967-020-02403-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 06/04/2020] [Indexed: 02/07/2023] Open
Abstract
Background The in vitro production of mature human red blood cells (RBCs) from induced pluripotent stem cells (iPSCs) has been the focus of research to meet the high demand for blood transfusions. However, limitations like high costs and technological requirements restrict the use of RBCs produced by iPSC differentiation to specific circumstances, such as for patients with rare blood types or alloimmunized patients. In this study, we developed a detailed protocol for the generation of iPSC lines derived from peripheral blood of donors with O D-positive blood and rare blood types (D–and Jr(a-)) and subsequent erythroid differentiation. Methods Mononuclear cells separated from the peripheral blood of O D-positive and rare blood type donors were cultured to produce and expand erythroid progenitors and reprogrammed into iPSCs. A 31-day serum-free, xeno-free erythroid differentiation protocol was used to generate reticulocytes. The stability of iPSC lines was confirmed with chromosomal analysis and RT-PCR. Morphology and cell counts were determined by microscopy observations and flow cytometry. Results Cells from all donors were successfully used to generate iPSC lines, which were differentiated into erythroid precursors without any apparent chromosomal mutations. This differentiation protocol resulted in moderate erythrocyte yield per iPSC. Conclusions It has previously only been hypothesized that erythroid differentiation from iPSCs could be used to produce RBCs for transfusion to patients with rare blood types or who have been alloimmunized. Our results demonstrate the feasibility of producing autologous iPSC-differentiated RBCs for clinical transfusions in patients without alternative options.
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Affiliation(s)
- Yu Jin Park
- Department of Laboratory Medicine, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.,Department of Laboratory Medicine, Armed Forces Yangju Hospital, Yangju-si, Gyeonggi-do, Korea
| | - Su-Hee Jeon
- Department of Laboratory Medicine, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Hyun-Kyung Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Eun Jung Suh
- Department of Laboratory Medicine, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Seung Jun Choi
- Department of Laboratory Medicine, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Sinyoung Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
| | - Hyun Ok Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.
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23
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Choi HJ, Moon KW, Kim HO, Lee YA, Hong SJ, Jung JY, Kim HA, Suh CH, Ha YJ, Kim IJ, Lee J, Park EK, Lee SG, Seo MR, Baek HJ, Choi ST, Song JS. Seasonal Variations and Associated Factors of Gout Attacks: a Prospective Multicenter Study in Korea. J Korean Med Sci 2020; 35:e133. [PMID: 32449320 PMCID: PMC7246186 DOI: 10.3346/jkms.2020.35.e133] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 03/13/2020] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND We purposed to evaluate the seasonality and associated factors of the incidence of gout attacks in Korea. METHODS We prospectively enrolled patients with gout attacks who were treated at nine rheumatology clinics between January 2015 and July 2018 and followed them for 1-year. Demographic data, clinical and laboratory features, and meteorological data including seasonality were collected. RESULTS Two hundred-five patients (men, 94.1%) were enrolled. The proportion of patients with initial gout attacks was 46.8% (n = 96). The median age, body mass index, attack duration, and serum uric acid level at enrollment were 50.0 years, 25.4, 5.0 days, and 7.4 mg/dL, respectively. Gout attacks were most common during spring (43.4%, P < 0.001) and in March (23.4%, P < 0.001). A similar pattern of seasonality was observed in the group with initial gout attacks. Alcohol was the most common provoking factor (39.0%), particularly during summer (50.0%). The median diurnal temperature change on the day of the attack was highest in the spring (9.8°C), followed by winter (9.3°C), fall (8.6°C), and summer (7.1°C) (P = 0.027). The median change in humidity between the 2 consecutive days (the day before and the day of the attack) was significantly different among the seasons (3.0%, spring; 0.3%, summer; -0.9%, fall; -1.2%, winter; P = 0.015). One hundred twenty-five (61%) patients completed 1-year follow-up (51% in the initial attack group). During the follow-up period, 64 gout flares developed (21 in the initial attack group). No significant seasonal variation in the follow-up flares was found. CONCLUSION In this prospective study, the most common season and month of gout attacks in Korea are spring and March, respectively. Alcohol is the most common provoking factor, particularly during summer. Diurnal temperature changes on the day of the attack and humidity changes from the day before the attack to the day of the attack are associated with gout attack in our cohort.
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Affiliation(s)
- Hyo Jin Choi
- Division of Rheumatology, Department of Internal Medicine, Gil Medical Center, Gachon University College of Medicine, Incheon, Korea
| | - Ki Won Moon
- Division of Rheumatology, Department of Internal Medicine, Kangwon National University School of Medicine, Chuncheon, Korea
| | - Hyun Ok Kim
- Division of Rheumatology, Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Korea
| | - Yeon Ah Lee
- Division of Rheumatology, Department of Internal Medicine, Kyung Hee University Hospital, Seoul, Korea
| | - Seung Jae Hong
- Division of Rheumatology, Department of Internal Medicine, Kyung Hee University Hospital, Seoul, Korea
| | - Ju Yang Jung
- Department of Rheumatology, Ajou University School of Medicine, Suwon, Korea
| | - Hyoun Ah Kim
- Department of Rheumatology, Ajou University School of Medicine, Suwon, Korea
| | - Chang Hee Suh
- Department of Rheumatology, Ajou University School of Medicine, Suwon, Korea
| | - You Jung Ha
- Division of Rheumatology, Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - In Je Kim
- Division of Rheumatology, Department of Internal Medicine, Ewha Womans University College of Medicine, Seoul, Korea
| | - Jisoo Lee
- Division of Rheumatology, Department of Internal Medicine, Ewha Womans University College of Medicine, Seoul, Korea
| | - Eun Kyoung Park
- Division of Rheumatology, Department of Internal Medicine, Pusan National University School of Medicine, Busan, Korea
| | - Seung Geun Lee
- Division of Rheumatology, Department of Internal Medicine, Pusan National University School of Medicine, Busan, Korea
| | - Mi Ryoung Seo
- Division of Rheumatology, Department of Internal Medicine, Gil Medical Center, Gachon University College of Medicine, Incheon, Korea
| | - Han Joo Baek
- Division of Rheumatology, Department of Internal Medicine, Gil Medical Center, Gachon University College of Medicine, Incheon, Korea
| | - Sang Tae Choi
- Division of Rheumatology, Department of Internal Medicine, Chung-Ang University School of Medicine, Seoul, Korea
| | - Jung Soo Song
- Division of Rheumatology, Department of Internal Medicine, Chung-Ang University School of Medicine, Seoul, Korea.
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Abstract
PURPOSE Presently, Korea is facing new challenges associated with an imbalance in blood supply and demand. The purpose of this study was to examine trends in blood supply and demand in Korea over the past 10 years through 2018 and to propose what to prepare in the future. MATERIALS AND METHODS Age demographics in Korea were analyzed using data from the Statistics Korea. Blood donation and blood supply data were analyzed using Blood Services Statistics 2018 by the Korean Red Cross. Blood transfusion data from hospitals in 2018 were obtained from the Health Insurance Review and Assessment Service. RESULTS In 2018, 2883270 whole blood and apheresis units were collected in Korea. The Korean Red Cross supplied 4277762 blood components to 2491 hospitals. The overall blood donation rate was 5.6%, and the most frequent donors were young male donors. Leukoreduced red blood cells (RBCs) constituted 25% of all RBCs used, and 40% of all platelets were supplied by single-donor platelets. The self-sufficiency rate of domestic plasma with which to produce plasma-derived medicinal products was 68.7% in 2018. Blood use was the most frequent among patients aged 70-79 years. CONCLUSION Blood management in Korea is changing rapidly due to a low birth rate, rapid aging, and an increase in severely ill patients who require most of the blood supply. Therefore, future plans to promote donation at a national level and optimal use of blood in hospitals is necessary.
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Affiliation(s)
- Juhye Roh
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Seung Jun Choi
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Sinyoung Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Hyukki Min
- Blood Transfusion Research Institute, Korean Red Cross, Wonju, Korea
| | - Hyun Ok Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea.
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25
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Ahn JY, Sohn Y, Lee SH, Cho Y, Hyun JH, Baek YJ, Jeong SJ, Kim JH, Ku NS, Yeom JS, Roh J, Ahn MY, Chin BS, Kim YS, Lee H, Yong D, Kim HO, Kim S, Choi JY. Use of Convalescent Plasma Therapy in Two COVID-19 Patients with Acute Respiratory Distress Syndrome in Korea. J Korean Med Sci 2020; 35:e149. [PMID: 32281317 PMCID: PMC7152526 DOI: 10.3346/jkms.2020.35.e149] [Citation(s) in RCA: 220] [Impact Index Per Article: 55.0] [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: 03/28/2020] [Accepted: 04/02/2020] [Indexed: 12/18/2022] Open
Abstract
Coronavirus disease 2019 (COVID-19) caused by severe acute respiratory syndrome coronavirus-2 not yet has established its treatment, but convalescent plasma has been expected to increase survival rates as in the case with other emerging viral infections. We describe two cases of COVID-19 treated with convalescent plasma infusion. Both patients presented severe pneumonia with acute respiratory distress syndrome and showed a favorable outcome after the use of convalescent plasma in addition to systemic corticosteroid. To our knowledge, this is the first report of the use of convalescent plasma therapy for COVID-19 in Korea.
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Affiliation(s)
- Jin Young Ahn
- Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Yujin Sohn
- Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Su Hwan Lee
- Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Yunsuk Cho
- Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Jong Hoon Hyun
- Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Yae Jee Baek
- Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Su Jin Jeong
- Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Jung Ho Kim
- Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Nam Su Ku
- Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Joon Sup Yeom
- Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Juhye Roh
- Department of Laboratory Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Mi Young Ahn
- Department of Internal Medicine, Seoul Medical Center, Seoul, Korea
| | - Bum Sik Chin
- Department of Internal Medicine, National Medical Center, Seoul, Korea
| | - Young Sam Kim
- Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Hyukmin Lee
- Department of Laboratory Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Dongeun Yong
- Department of Laboratory Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Hyun Ok Kim
- Department of Laboratory Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Sinyoung Kim
- Department of Laboratory Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
| | - Jun Yong Choi
- Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
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26
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Kim JE, Kim HO, Bae K, Choi DS, Nickel D. Correction to: T1 mapping for liver function evaluation in gadoxetic acid–enhanced MR imaging: comparison of look-locker inversion recovery and B1 inhomogeneity–corrected variable flip angle method. Eur Radiol 2020; 30:672. [DOI: 10.1007/s00330-019-06363-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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27
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Fracassi F, Sugiyama T, Yamamoto E, Kurihara O, Kim HO, Thondapu V, Lee H, Fujimoto JG, Fuster V, Jang IK. 108Biologic significance of healed culprit plaques in stable angina versus acute coronary syndromes. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Background
Healed plaques, the signature of prior subclinical plaque destabilization, are frequently found in autopsy studies and have recently been described in patients with acute coronary syndromes (ACS).
Objectives
To compare the prevalence and features of plaque vulnerability of healed culprit lesions in stable angina pectoris (SAP) versus ACS patients by using Optical Coherence Tomography (OCT).
Methods
A total of 752 patients were included: 376 patients with SAP were selected using propensity score matching, comparable to 376 patients with ACS. Healed plaques were identified using established criteria, defined as layers of different optical density on OCT. Healed plaque prevalence along with angiographic and OCT findings were compared between the two groups.
Results
Healed plaques were more frequent in SAP than in ACS patients (42.0% vs 28.7%, p<0.001). LDL-cholesterol and high sensitive C-reactive protein (hs-CRP) levels were significantly lower in SAP patients with layered plaque as compared to ACS patients with layered plaque [97.9±36.9 mg/dL vs 116.7±39.2 mg/dL, p<0.001; 0.20 (0.10–0.83) mg/L vs 4.98 (1.00–11.32) mg/L, p<0.001, respectively]. Thin-cap fibroatheroma, macrophage accumulation and microvessels were significantly less frequent in layered plaques in SAP patients as compared to those in ACS patients (12.7% vs 56.5%, p<0.001, 7.0% vs 79.6%, p<0.001, and 20.3% vs 43.5%, p<0.001, respectively). Calcifications were found more frequently among layered plaques in SAP patients than in ACS patients (51.3% vs 33.6%, p=0.006).
Conclusions
Healed plaques, detected more frequently in SAP than in ACS patients, portend different atherosclerotic backgrounds. In SAP patients, plaque destabilization frequently does not lead to occlusive thrombosis, possibly due to low level of local vulnerability and systemic inflammation. In ACS patients, the presence of high level of local vulnerability and systemic inflammation may play an important role in occlusive thrombus formation, resulting in terminating the cycles of subclinical thrombosis and healing.
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Affiliation(s)
- F Fracassi
- Harvard Medical School, Boston, United States of America
| | - T Sugiyama
- Harvard Medical School, Boston, United States of America
| | - E Yamamoto
- Harvard Medical School, Boston, United States of America
| | - O Kurihara
- Harvard Medical School, Boston, United States of America
| | - H O Kim
- Harvard Medical School, Boston, United States of America
| | - V Thondapu
- Harvard Medical School, Boston, United States of America
| | - H Lee
- Harvard Medical School, Boston, United States of America
| | - J G Fujimoto
- Harvard Medical School, Boston, United States of America
| | - V Fuster
- Harvard Medical School, Boston, United States of America
| | - I K Jang
- Harvard Medical School, Boston, United States of America
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28
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Liu C, Eun HS, Nah H, Lee S, Choi JR, Kim HO. Newborn hereditary elliptocytosis confirmed by familial genetic testing. Int J Lab Hematol 2019; 42:e20-e22. [DOI: 10.1111/ijlh.13079] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 05/30/2019] [Accepted: 06/11/2019] [Indexed: 01/12/2023]
Affiliation(s)
- Changseung Liu
- Department of Laboratory Medicine Yonsei University College of Medicine Seoul Korea
| | - Ho Sun Eun
- Department of Pediatrics Yonsei University College of Medicine Seoul Korea
| | - Hyunjin Nah
- Department of Laboratory Medicine Yonsei University College of Medicine Seoul Korea
| | - Seung‐Tae Lee
- Department of Laboratory Medicine Yonsei University College of Medicine Seoul Korea
| | - Jong Rak Choi
- Department of Laboratory Medicine Yonsei University College of Medicine Seoul Korea
| | - Hyun Ok Kim
- Department of Laboratory Medicine Yonsei University College of Medicine Seoul Korea
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29
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Hong SI, Suh YS, Kim HO, Bae IG, Shin JH, Cho OH. Successful Treatment of Catheter Related Blood Stream Infection By Millerozyma farinosa with Micafungin: A Case Report. Infect Chemother 2019; 50:362-366. [PMID: 30600661 PMCID: PMC6312903 DOI: 10.3947/ic.2018.50.4.362] [Citation(s) in RCA: 2] [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] [Subscribe] [Scholar Register] [Received: 11/12/2017] [Accepted: 12/27/2017] [Indexed: 11/24/2022] Open
Abstract
Millerozyma farinosa (formerly Pichia farinosa) is halotolerant yeast mainly found in food and ubiquitous in the environment. It was a rare yeast pathogen, but it has recently emerged as a cause of fungemia in immunocompromised patients. Optimal therapy for invasive fungal infection by this pathogen remains unclear. We report a case of catheter related blood stream infection caused by M. farinosa in a 71-year-old patient who recovered successfully after removal of the central venous catheter and treatment with micafungin.
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Affiliation(s)
- Sun In Hong
- Department of Internal Medicine, Gyeongsang National University Changwon Hospital, Gyeongsang National University School of Medicine, Changwon, Korea
| | - Young Sun Suh
- Department of Internal Medicine, Gyeongsang National University Changwon Hospital, Gyeongsang National University School of Medicine, Changwon, Korea
| | - Hyun Ok Kim
- Department of Internal Medicine, Gyeongsang National University Changwon Hospital, Gyeongsang National University School of Medicine, Changwon, Korea
| | - In Gyu Bae
- Department of Internal Medicine, Gyeongsang National University Hospital, Gyeongsang National University School of Medicine, Jinju, Korea
| | - Jong Hee Shin
- Department of Laboratory Medicine, Chonnam National University Medical School, Gwangju, Korea
| | - Oh Hyun Cho
- Department of Internal Medicine, Gyeongsang National University Changwon Hospital, Gyeongsang National University School of Medicine, Changwon, Korea.
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30
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Choi SJ, Lee E, Kim S, Lyu CJ, Kim HO. Identification of Anti-Gerbich Antibody in an Emirati Marrow Hematopoietic Progenitor Cell Donor with Fy(a-b-) Phenotype. Yonsei Med J 2018; 59:1253-1256. [PMID: 30450861 PMCID: PMC6240563 DOI: 10.3349/ymj.2018.59.10.1253] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 09/20/2018] [Accepted: 10/12/2018] [Indexed: 11/27/2022] Open
Abstract
In this study, we report a case of anti-Gerbich (Ge) alloantibody to a high-prevalence Ge antigen in a donor with Fy(a-b-) phenotype. The alloantibody was detected in an Emirati boy who was admitted to a Korean tertiary hospital for marrow hematopoietic progenitor cell donation. He did not have a history of transfusion. His blood type was A, RhD+, and findings from the antibody screening and identification test showed 2+ reactivity in all panel cells except autologous cells. We concluded that it would be very difficult to find compatible blood components for the donor and requested further tests from external laboratories. Anti-Ge2 was identified by additional tests in a foreign reference laboratory, and the Duffy genotype of the donor was FY*02/FY*02N.01 based on the Korean Rare Blood Program. Although the donor was not a Korean, as the number of foreign patients visiting Korea increases annually, there is growing interest in patients with rare blood types in the Korean population. However, there has been very little research on rare or high prevalence blood type antigen and antibody in the Korean population. Therefore, additional research in Korea is needed on rare blood group antibodies and antigens, including Ge cases.
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Affiliation(s)
- Seung Jun Choi
- Department of Laboratory Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Eunkyung Lee
- Department of Laboratory Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Sinyoung Kim
- Department of Laboratory Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Chuhl Joo Lyu
- Division of Pediatric Hemato-Oncology, Department of Pediatrics, Yonsei University Health System, Yonsei University College of Medicine, Seoul, Korea
| | - Hyun Ok Kim
- Department of Laboratory Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
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31
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Park YJ, Choi MH, Kim D, Lee K, Kim HO, Jeong SH. An Excel Macro for Determining Allelic and Sequence Types of Bacterial Clones in Multilocus Sequence Typing. Ann Lab Med 2018; 39:183-189. [PMID: 30430781 PMCID: PMC6240524 DOI: 10.3343/alm.2019.39.2.183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 07/09/2018] [Accepted: 10/16/2018] [Indexed: 11/19/2022] Open
Abstract
Background Multilocus sequence typing (MLST) was designed to overcome the low discriminatory power and poor reproducibility of previous molecular typing schemes, and it is useful for inter-laboratory, inter-regional, and inter-national comparison of pathogenic clones. MLST includes labor-intensive sequencing processes and meticulous allelic/sequence type (ST) determination processes, often prone to error. We developed a free automated MLST determination program (MLST typer) based on the Visual Basic for Applications macro, which runs on Microsoft Excel. Methods MLST typer imports sequence data in the FASTA format, converts reverse complement counterparts of the reverse sequences, assembles forward and reverse-complement converted sequences, and returns allelic numbers for each gene and ST of each isolate. To evaluate the performance of MLST typer, we tested the sequence data from 200 clinical isolates, each consisting of seven housekeeping gene sequences, with a total of 1,400 allelic number determinations. The results were compared with manual assessment. Results MLST typer comprises three worksheets: the Main page, Result page, and Summary page. The Main page console operates the process according to user-specified parameters. The Result and Summary pages provide the allelic type and ST determinations. It took approximately 12 minutes to analyze the sequence data from 200 clinical isolates. Compared with manual assessment, the rate of correct identification was 97.2% (1,361/1,400). Conclusions MLST typer can be widely used for epidemiological studies owing to its thoroughness in repetitive functions, good compatibility with FASTA type data files, and easy-to-understand outputs for allelic and ST determinations.
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Affiliation(s)
- Yu Jin Park
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea.,Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, Korea
| | - Min Hyuk Choi
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea.,Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, Korea
| | - Dokyun Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea.,Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, Korea.
| | - Kwangjun Lee
- Division of Antimicrobial Resistance, National Institute of Health, Centers for Disease Control and Prevention, Cheongju, Korea
| | - Hyun Ok Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Seok Hoon Jeong
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea.,Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, Korea.
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Na J, Song SY, Kim JD, Han M, Heo JS, Yang CE, Kim HO, Lew DH, Kim E. Protein-Engineered Large Area Adipose-derived Stem Cell Sheets for Wound Healing. Sci Rep 2018; 8:15869. [PMID: 30367098 PMCID: PMC6203842 DOI: 10.1038/s41598-018-34119-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 09/05/2018] [Indexed: 12/20/2022] Open
Abstract
Human adipose-derived stem cells (hADSCs) formed robust cell sheets by engineering the cells with soluble cell adhesive molecules (CAMs), which enabled unique approaches to harvest large area hADSC sheets. As a soluble CAM, fibronectin (FN) (100 pg/ml) enhanced the cell proliferation rate and control both cell-to-cell and cell-to-substrate interactions. Through this engineering of FN, a transferrable hADSC sheet was obtained as a free-stranding sheet (122.6 mm2) by a photothermal method. During the harvesting of hADSC sheets by the photothermal method, a collagen layer in-between cells and conductive polymer film (CP) was dissociated, to protect cells from direct exposure to a near infrared (NIR) source. The hADSC sheets were applied to chronic wound of genetically diabetic db/db mice in vivo, to accelerate 30% faster wound closure with a high closure effect (εwc) than that of control groups. These results indicated that the engineering of CAM and collagens allow hADSC sheet harvesting, which could be extended to engineer various stem cell sheets for efficient therapies.
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Affiliation(s)
- Jongbeom Na
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Seung Yong Song
- Institute for Human Tissue Restoration, Department of Plastic & Reconstructive Surgery, Yonsei University College of Medicine, Seoul, South Korea
| | - Jae Dong Kim
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Minsu Han
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - June Seok Heo
- Cell Therapy Center, Severance Hospital, Yonsei University College of Medicine, Department of Laboratory Medicine, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Chae Eun Yang
- Institute for Human Tissue Restoration, Department of Plastic & Reconstructive Surgery, Yonsei University College of Medicine, Seoul, South Korea
| | - Hyun Ok Kim
- Cell Therapy Center, Severance Hospital, Yonsei University College of Medicine, Department of Laboratory Medicine, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea
| | - Dae Hyun Lew
- Institute for Human Tissue Restoration, Department of Plastic & Reconstructive Surgery, Yonsei University College of Medicine, Seoul, South Korea.
| | - Eunkyoung Kim
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea.
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Lee HJ, Nam SM, Choi SK, Seo KY, Kim HO, Chung SH. Comparative study of substrate free and amniotic membrane scaffolds for cultivation of limbal epithelial sheet. Sci Rep 2018; 8:14628. [PMID: 30279555 PMCID: PMC6168574 DOI: 10.1038/s41598-018-32914-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Accepted: 09/18/2018] [Indexed: 11/30/2022] Open
Abstract
Transplantation of cultivated limbal epithelial transplantation has been proven to restore the corneal surface in limbal stem cell deficiency (LSCD). Here we comparatively investigated the optimized conditions and the efficiency of limbal epithelial sheet growth in three media conditions as well as with substrate free (transwell), human amniotic membrane (HAM) sutured onto transwell inserts (HAMTW), and HAM slide scaffold (HAMS). Outcomes evaluated were outgrowth sheet size from limbal explants, expression of stem/progenitor cell markers p63α, ABCG2 and CK15, and colony formation efficiency (CFE). Additionally, limbal epithelial sheets on HAMS were transplanted into corneas of LSCD rabbit models. Limbal epithelial sheets with 5% human AB serum showed the greatest increase in ABCG2 efflux activity (JC1low), p63α expression, and CFE compared in both conditions without HAM and with HAM, respectively. The outgrowth sheet size, cell yield, and Ki67 expression were increased in limbal epithelial sheets on HAMS compared to transwell and HAMTW. ABCG2 efflux activity, p63α and CK15 expressions, and CFE were also increased in limbal epithelial sheets on HAMS as well. In corneas of transplanted rabbit LSCD models, p63α expressions were noted in the basal layers and CK12 expressions were observed in superficial layers. Cultivation of limbal epithelial sheet on HAMS with xeno-free medium enhances the growth and stemness of limbal epithelial sheets.
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Affiliation(s)
- Hyun Jung Lee
- Department of Biochemical Engineering, Seoil University, Seoul, Korea
| | - Sang Min Nam
- Department of Ophthalmology, CHA Bundang Medical Center, CHA University, Seongnam, Korea
| | - Sae Kyung Choi
- Department of Obstetrics and Gynecology, Incheon St. Mary's Hospital, Incheon, Korea
| | - Kyoung Yul Seo
- Department of Ophthalmology, Institute of Vision Research, Yonsei University College of Medicine, Seoul, Korea
| | - Hyun Ok Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - So-Hyang Chung
- Department of Ophthalmology and Visual Science, Catholic Institute of Visual Science, College of Medicine, The Catholic University of Korea, Seoul, Korea.
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Kim B, Park Y, Kim YA, Kang M, Kim S, Kim HO. Analysis of red blood cell use in elective surgeries over 12 years in Korea. Transfusion 2018; 58:2335-2344. [PMID: 30208222 DOI: 10.1111/trf.14839] [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] [Received: 02/02/2018] [Revised: 05/24/2018] [Accepted: 05/24/2018] [Indexed: 11/30/2022]
Abstract
BACKGROUND Red blood cell (RBC) transfusion is a lifesaving process for patients with perioperative bleeding, but transfusion can cause adverse events. Effective utilization and management of blood products as a limited resource is essential when considering cost-efficiency and patient safety. STUDY DESIGN AND METHODS We analyzed the number of RBC units used during the hospitalization of patients who had undergone surgical procedures from 2002 to 2013 using National Health Insurance Service-National Sample Cohort data, which include a total of 487,238 cases for 206 selected operations. RESULTS RBC units were used in 39,637 (8.1%) cases. A total of 60,815 RBC units were transfused with a mean of 0.13 units per patient overall and a mean of 1.53 units per case receiving RBC transfusion. In addition, 56.7% of the RBC units were transfused for females, and 60.1% of RBC units were transfused into patients aged 60 or older. RBC units were used most often in orthopedic surgeries (33.8%), followed by general surgeries (12.0%) and vascular surgeries (11.8%). The number of operations performed in the cohort increased from 27,690 in 2002 to 49,473 in 2013, and the mean number of RBC units used per operation also increased from 0.08 units in 2002 to 0.15 units in 2013. CONCLUSION Continuous management for blood preparation and transfusion is needed for efficient utilization of blood. Periodic investigation on the use of blood products through nationwide studies could suggest data applicable to blood product preparation for various elective surgical operations.
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Affiliation(s)
- Banseok Kim
- Department of Laboratory Medicine, National Health Insurance Service Ilsan Hospital, Goyang, Republic of Korea
| | - Yongjung Park
- Department of Laboratory Medicine, National Health Insurance Service Ilsan Hospital, Goyang, Republic of Korea
| | - Young Ah Kim
- Department of Laboratory Medicine, National Health Insurance Service Ilsan Hospital, Goyang, Republic of Korea
| | - Minjin Kang
- Research Institute, National Health Insurance Service Ilsan Hospital, Goyang, Republic of Korea
| | - Sinyoung Kim
- Department of Laboratory Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Hyun Ok Kim
- Department of Laboratory Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
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Kim W, Kim HO, Cho JH, Kim JM, Chung HM. 4064Effects of chronic kidney disease on clinical outcomes in patients with peripheral artery disease undergoing endovascular treatment: analysis from the K-VIS ELLA registry. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.4064] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- W Kim
- Kyung Hee University Hospital, Seoul, Korea Republic of
| | - H O Kim
- Kyung Hee University Hospital, Seoul, Korea Republic of
| | - J H Cho
- Saint Carollo Hospital, Suncheon, Korea Republic of
| | - J M Kim
- Saint Carollo Hospital, Suncheon, Korea Republic of
| | - H M Chung
- Kyung Hee University Hospital, Seoul, Korea Republic of
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Kim W, Kim JM, Cho JH, Kim HO, Woo JS, Chung HM. P6400Circadian distribution of acute myocardial infarction in different age groups: sinusoidal function analyses. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6400] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- W Kim
- Kyung Hee University Hospital, Seoul, Korea Republic of
| | - J M Kim
- Saint Carollo Hospital, Suncheon, Korea Republic of
| | - J H Cho
- Saint Carollo Hospital, Suncheon, Korea Republic of
| | - H O Kim
- Kyung Hee University Hospital, Seoul, Korea Republic of
| | - J S Woo
- Kyung Hee University Hospital, Seoul, Korea Republic of
| | - H M Chung
- Kyung Hee University Hospital, Seoul, Korea Republic of
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Cho J, Kim H, Song J, Cheong JW, Shin JW, Yang WI, Kim HO. Platelet storage induces accelerated desialylation of platelets and increases hepatic thrombopoietin production. J Transl Med 2018; 16:199. [PMID: 30021591 PMCID: PMC6052694 DOI: 10.1186/s12967-018-1576-6] [Citation(s) in RCA: 19] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 07/13/2018] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Stored platelets undergo deleterious changes, referred to as platelet storage lesions (PSLs), which accelerate the desialylation of platelets and result in their phagocytosis and clearance by hepatic macrophages. Recent studies have reported that Ashwell-Morell receptor binds to desialylated platelets, thereby inducing hepatic thrombopoietin (TPO) production in a mouse model. Therefore, this study aimed to demonstrate these relationships between PSL and hepatic TPO production in human study. METHODS Platelet concentrates (PCs) were obtained from 5 healthy volunteers and the remaining were discarded samples from the blood bank. PCs were divided into two halves, and stored either at 22 or 4 °C. Experiments were conducted using serial samples. Desialylation was assessed using flow cytometry, and structural changes were visualized using electron microscopy. Following co-culture of HepG2 cells (HB-8065, ATCC) with isolated platelets, hepatic TPO production was determined using real-time quantitative polymerase chain reaction and the supernatant TPO level was measured using a Luminex kit. RESULTS For 5 days of storage duration, platelet counts were not influenced by the storage conditions, but the degree of desialylation was proportional to the storage duration. Significant changes in the platelet surface and structure according to storage conditions were noted in electron microscopy. HepG2 cells incubated with aged platelets expressed more TPO mRNA, and supernatant TPO levels were proportional to the storage duration. Refrigeration also influenced on the results of this study, but they were not statistically significant. CONCLUSIONS This is the first study to demonstrate that, in vitro, aging and refrigeration affect the integrity of human platelets, resulting in induction of hepatic TPO mRNA and protein expression.
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Affiliation(s)
- Jooyoung Cho
- Department of Laboratory Medicine, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722 South Korea
- Department of Laboratory Medicine, Yonsei University Wonju College of Medicine, Wonju, South Korea
| | - Hyunkyung Kim
- Department of Obstetrics and Gynecology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - Jaewoo Song
- Department of Laboratory Medicine, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722 South Korea
| | - June-Won Cheong
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, South Korea
| | - Jeong Won Shin
- Department of Laboratory Medicine, Soonchunhyang University School of Medicine, Seoul, South Korea
| | - Woo Ick Yang
- Department of Pathology, Yonsei University College of Medicine, Seoul, South Korea
| | - Hyun Ok Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722 South Korea
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Kim B, Lee ST, Kim S, Choi JR, Kim HO. Application of Multiplex Ligation-Dependent Probe Amplification Assay for Genotyping Major Blood Group Systems Including DEL Variants in the D-Negative Korean Population. Ann Lab Med 2018; 38:32-38. [PMID: 29071816 PMCID: PMC5700144 DOI: 10.3343/alm.2018.38.1.32] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 05/02/2017] [Accepted: 08/31/2017] [Indexed: 01/22/2023] Open
Abstract
Background The DEL blood type, a very weak D variant, is a major concern in the field of transfusion medicine because of its potential to cause anti-D alloimmunization. We investigated the molecular basis of serologically D-negative phenotypes, including the DEL type, and the distribution of other blood group systems in the Korean population using the recently developed multiplex ligation-dependent probe amplification (MLPA) assay. Methods Blood group genotyping using the MLPA assay and RhCE phenotyping were performed on randomly selected 95 D-negative red blood cell products. The MLPA results were verified by multiplex PCR for the RHD promoter, exons 4, 7, and 10 and by direct sequencing of RHD exon 9. Results Out of 95 cases, total deletion of the RHD was observed in 74 cases (77.9%) and four cases (4.2%) had an RHD-CE-D hybrid allele. The other 17 cases (17.9%) had an RHD(1227G>A) allele, which was further confirmed by sequencing analysis. The RhCE phenotypes of RHD(1227G>A) alleles were composed of 14 Cce and 3 CcEe, and all 60 cases of the ce phenotype were revealed to have a total deletion of the RHD. Genotyping results and allele distribution of the other 17 blood group systems were consistent with previous reports on the East Asian population. Conclusions MLPA assay correctly determined RHD genotype, including RHD-CE-D hybrid alleles or RHD(1227G>A) allele, and other clinically relevant blood group genotypes in D-negative Koreans. The use of MLPA assay on serologically D-negative individuals may help improve transfusion safety by preventing anti-D alloimmunization.
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Affiliation(s)
- Banseok Kim
- Department of Laboratory Medicine, National Health Insurance Service Ilsan Hospital, Goyang, Korea
| | - Seung Tae Lee
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Sinyoung Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea.
| | - Jong Rak Choi
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Hyun Ok Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
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Kim S, Song S, Kim HO. Cryopreservation of Genotyped ABO Subgroup RBCs for Quality Assurance of ABO Grouping Reagents. Ann Clin Lab Sci 2018; 48:216-222. [PMID: 29678850] [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] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
BACKGROUND Quality assurance of newly developed or manufactured blood grouping reagents with reagent red blood cells (RBCs) is crucial in the process of product approval by governmental agency. However, RBCs with rare blood group are not easily available in the fresh state. We investigated the feasibility of cryopreserved and genotyped ABO subgroup RBC reagents for quality assurance purpose. METHODS We obtained RBCs from 10 volunteers with ABO subgroup phenotypes. The ABO genotypes and alleles were analyzed by the sequencing of ABO exon 6 and 7. Using the 40% wt/vol high-glycerol method, RBC units were cryopreserved as reagent RBCs into separate cryovials at -80°C. The potency titrations were performed before and after cryopreservation for 6 months and 2 years to evaluate the stability of ABO antigens. RESULTS ABO genotypes of cryopreserved RBCs were cis-AB01/O01 (n=2), cis-AB01/B101 (n=1), Aw10/B101 (n=2), A201/A201 (n=1), A205/B101 (n=1), A102/B112 (n=1), and A101/B306 (n=1). These ABO subgroup alleles are exclusively present in East-Asian population except for the known ABO*A201 allele. The potency titers of cryopreserved RBCs were not significantly different between pre-freezing and post-freezing. CONCLUSIONS The national performance evaluation of ABO blood grouping reagents could be performed with cryopreserved and genotyped reagent RBCs.
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Affiliation(s)
- Sinyoung Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Sungwook Song
- Daejeon-Sejong-Chungnam Blood Center, Korean Red Cross, Daejeon, Korea
| | - Hyun Ok Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
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Choi MH, Choe YH, Park Y, Nah H, Kim S, Jeong SH, Kim HO. The effect of therapeutic leukapheresis on early complications and outcomes in patients with acute leukemia and hyperleukocytosis: a propensity score-matched study. Transfusion 2017; 58:208-216. [DOI: 10.1111/trf.14329] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 08/07/2017] [Accepted: 08/07/2017] [Indexed: 02/04/2023]
Affiliation(s)
- Min Hyuk Choi
- Departments of Laboratory Medicine; Yonsei University College of Medicine; Seoul Korea
- Department of Laboratory Medicine; National Health Insurance Service Ilsan Hospital; Goyang Korea
| | - Yeon Hwa Choe
- Internal Medicine; Yonsei University College of Medicine; Seoul Korea
| | - Yongjung Park
- Department of Laboratory Medicine; National Health Insurance Service Ilsan Hospital; Goyang Korea
| | - Hyunjin Nah
- Departments of Laboratory Medicine; Yonsei University College of Medicine; Seoul Korea
| | - Sinyoung Kim
- Departments of Laboratory Medicine; Yonsei University College of Medicine; Seoul Korea
| | - Seok Hoon Jeong
- Departments of Laboratory Medicine; Yonsei University College of Medicine; Seoul Korea
| | - Hyun Ok Kim
- Departments of Laboratory Medicine; Yonsei University College of Medicine; Seoul Korea
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Heo JS, Lee SG, Kim HO. Distal-less homeobox 5 is a master regulator of the osteogenesis of human mesenchymal stem cells. Int J Mol Med 2017; 40:1486-1494. [PMID: 28949384 PMCID: PMC5627883 DOI: 10.3892/ijmm.2017.3142] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 09/11/2017] [Indexed: 01/08/2023] Open
Abstract
Mesenchymal stem cells (MSCs) differentiate into multiple lineages and are a promising source of cells for clinical use. Previously, we found that the gene distal-less homeobox 5 (DLX5) is specifically expressed in MSCs with osteogenic potential. Understanding the mechanism of osteogenesis is necessary for successful bone regeneration using MSCs. The aim of this study was to examine the function of the DLX5 gene in MSCs during osteogenesis (bone development). We analyzed the possible association between DLX5 expression and osteogenesis-, chondrogenesis- and adipogenesis-related gene expression in different cells isolated from bone marrow and cord blood. Differentiation capacity was assessed by observing morphological changes, monitoring gene expression patterns, and staining with Von Kossa, safranin O, and Oil Red O. Suppression of DLX5 expression by means of a small interfering RNA (siRNA) downregulated osteogenic markers and reduced the signs of calcium mineralization. Tanshinone IIA is a known small molecule activator of bone morphogenetic protein (BMP) signaling. Here, we report that induction of DLX5 by tanshinone IIA in MSCs enhanced osteogenic differentiation. In addition, we showed that tanshinone IIA (as a mediator of BMP2 signaling) activates runt-related transcription factor 2 (RUNX2) in MSCs and initiates calcium mineralization during osteogenesis. Taken together, these findings indicate that, in MSCs, DLX5 is a master regulator of osteogenesis. Furthermore, tanshinone IIA may be valuable for stem cell-based therapies of certain bone diseases.
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Affiliation(s)
- June Seok Heo
- Department of Integrated Biomedical and Life Sciences, College of Health Science, Korea University, Seoul 02841; 2Cell Therapy Center, Severance Hospital, Seoul 03722, Republic of Korea
| | - Seung Gwan Lee
- Department of Health and Environmental Science, College of Health Science, Korea University, Seoul 02841, Republic of Korea
| | - Hyun Ok Kim
- Cell Therapy Center, Severance Hospital, Seoul 03722, Republic of Korea
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Kim JE, Kim HO, Bae K, Cho JM, Choi HC, Choi DS. Differentiation of small intrahepatic mass-forming cholangiocarcinoma from small liver abscess by dual source dual-energy CT quantitative parameters. Eur J Radiol 2017. [PMID: 28624012 DOI: 10.1016/j.ejrad.2017.05.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
PURPOSE To investigate the use of dual source dual-energy CT (DECT) quantitative parameters compared with the use of conventional CT for differentiating small (≤3cm) intrahepatic mass-forming cholangiocarcinoma (IMCC) from small liver abscess (LA) during the portal venous phase (PVP). MATERIAL AND METHODS In this institutional review board-approved, retrospective study, 64 patients with IMCCs and 52 patients with LAs who were imaged in PVP using dual-energy mode were included retrospectively. A radiologist drew circular regions of interest in the lesion on the virtual monochromatic images (VMI), color-coded iodine overlay images, and linear blending images with a linear blending ratio of 0.3 to obtain CT value, its standard deviation, slope (k) of spectral curve and normalized iodine concentration (NIC). Two radiologists assessed lesion type on the basis of qualitative CT imaging features. RESULTS CT values on VMI at 50-130keV (20keV-interval), k, and NIC values were significantly higher in IMCCs than in LAs (p<0.0001). The best single parameter for differentiating IMCC from LA was CT value at 90keV, with sensitivity, specificity, accuracy, positive predictive value, and negative predictive value of 89.1%, 86.5%, 87.9%, 89.1%, and 86.5%, respectively. The best combination of parameters was CT value at 90keV, k, and NIC, with values of 87.5%, 84.6%, 83.6%, 87.5%, and 84.6%, respectively. Compared with CT value at linear blending images, CT value at 90keV showed greater sensitivity (89.1% vs 60.9%, p<0.0001) and similar specificity (86.5% vs 84.6%, p=1.0000), and combined CT value at 90keV, k, and NIC showed greater sensitivity (87.5% vs 60.9%, p<0.0001) and similar specificity (84.6% vs 84.6%, p=1.0000). Compared with qualitative analysis, CT value at 90keV showed greater sensitivity (89.1% vs 65.6%, p=0.0059) and specificity (86.5% vs 69.2%, p=0.0352), and combined CT value at 90keV, k, and NIC showed greater sensitivity (87.5% vs 65.6%, p=0.0094) and similar specificity (84.6% vs 69.2%, p >0.05). CONCLUSION Quantitative analysis of dual source dual-energy CT quantitative parameters showed greater accuracy than quantitative and qualitative analyses of conventional CT for differentiating small IMCCs from small LAs on single PVP scan.
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Affiliation(s)
- Ji Eun Kim
- Department of Radiology, Gyeongsang National University School of Medicine, 79 Gangnam-ro, Jinju 52727, Republic of Korea.
| | - Hyun Ok Kim
- Department of Internal Medicine, Gyeongsang National University School of Medicine, 79 Gangnam-ro, Jinju 52727, Republic of Korea.
| | - Kyungsoo Bae
- Department of Radiology, Gyeongsang National University School of Medicine, 79 Gangnam-ro, Jinju 52727, Republic of Korea.
| | - Jae Min Cho
- Department of Radiology, Gyeongsang National University School of Medicine, 79 Gangnam-ro, Jinju 52727, Republic of Korea.
| | - Ho Cheol Choi
- Department of Radiology, Gyeongsang National University School of Medicine, 79 Gangnam-ro, Jinju 52727, Republic of Korea.
| | - Dae Seob Choi
- Department of Radiology, Gyeongsang National University School of Medicine, 79 Gangnam-ro, Jinju 52727, Republic of Korea.
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Kim J, Kim S, Hwang IS, Choi JR, Lee JG, Kim YS, Kim MS, Kim HO. Effects of Neutralization by Soluble ABH Antigens Produced by Transplanted Kidneys From ABO-Incompatible Secretor Donors. Ann Lab Med 2017; 37:254-260. [PMID: 28224772 PMCID: PMC5339098 DOI: 10.3343/alm.2017.37.3.254] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Revised: 08/11/2016] [Accepted: 12/21/2016] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Grafts survive despite blood group antigens on the transplant being continuously exposed to antibodies in the blood of recipients in ABO-incompatible kidney transplantation (ABOi KT), owing to the mechanism of accommodation. We analyzed the immunodynamics of soluble ABH antigens in allografts from secretor donors and the influence of such immunodynamics on accommodation and subsequent graft survival in ABOi KT. METHODS The genotype of a known human β-galactoside α-1,2-fucosyltransferase gene (FUT2), which determines soluble ABH antigen secretor status, was established in 32 donors for ABOi KT at the Severance Hospital, from June 2010 to July 2015. Clinical outcomes of recipients, such as anti-A/B antibody titer change, renal function, and graft survival, were evaluated. RESULTS Twenty-five donors were secretors (78.1%), and seven were nonsecretors (21.9%). The frequency of anti-A/B IgG or IgM antibody titer elevation or reduction post-transplantation was not significantly related to donor secretor status. However, IgM titer was rapidly reduced in recipients transplanted from nonsecretor donors (P=0.01), which could be explained by the lack of absorption effect of soluble antigens, enhancing the binding of antibodies to antigens in the allografts. Interestingly, soluble ABH antigens did not affect rejection-free graft survival, which may be due to the nature of β-galactoside α-1,2-fucosyltransferase. CONCLUSIONS Soluble ABH antigens produced by transplanted kidneys from secretor donors played a role in inducing accommodation within three months of KT through neutralization; however, major graft outcomes were not affected.
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Affiliation(s)
- Jieun Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Sinyoung Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - In Sik Hwang
- Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - Jong Rak Choi
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Jae Geun Lee
- Department of Surgery, Yonsei University College of Medicine, Seoul, Korea
- Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Korea
| | - Yu Seun Kim
- Department of Surgery, Yonsei University College of Medicine, Seoul, Korea
- Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Korea
| | - Myoung Soo Kim
- Department of Surgery, Yonsei University College of Medicine, Seoul, Korea
- Research Institute for Transplantation, Yonsei University College of Medicine, Seoul, Korea.
| | - Hyun Ok Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea.
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Jung MK, Jin J, Kim HO, Kwon A, Chae HW, Kang SJ, Kim DH, Kim HS. A 1-month-old infant with chylomicronemia due to GPIHBP1 gene mutation treated by plasmapheresis. Ann Pediatr Endocrinol Metab 2017; 22:68-71. [PMID: 28443263 PMCID: PMC5401827 DOI: 10.6065/apem.2017.22.1.68] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 10/22/2016] [Accepted: 12/15/2016] [Indexed: 12/20/2022] Open
Abstract
Chylomicronemia is a severe type of hypertriglyceridemia characterized by chylomicron accumulation that arises from a genetic defect in intravascular lipolysis. It requires urgent and proper management, because serious cases can be accompanied by pancreatic necrosis or persistent multiple organ failure. We present the case of a 1-month-old infant with chylomicronemia treated by plasmapheresis. His chylomicronemia was discovered incidentally when lactescent plasma was noticed during routine blood sampling during a hospital admission for fever and irritability. Laboratory investigation revealed marked triglyceridemia (>5,000 mg/dL) with high chylomicron levels. We therefore decided to perform a therapeutic plasmapheresis to prevent acute pancreatitis. Sequence analysis revealed a homozygous novel mutation in exon 4 of GPIHBP1: c.476delG (p.Gly159Alafs). Glycosylphosphatidylinositol-anchored high density lipoprotein-binding protein 1 (GPIHBP1) stabilizes the binding of chylomicrons near lipoprotein lipase and supports lipolysis. Mutations of GPIHBP1, the most recently discovered gene, can lead to severe hyperlipidemia and are known to make up only 2% of the monogenic mutations associated with chylomicronemia. The patient maintains mild hypertriglyceridemia without rebound after single plasmapheresis and maintenance fibrate medication so far. Here, we report an infant with chylomicronemia due to GPIHBP1 mutation, successfully treated by plasmapheresis.
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Affiliation(s)
- Mo Kyung Jung
- Department of Pediatrics, Severance Children's Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Juhyun Jin
- Department of Pediatrics, Severance Children's Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Hyun Ok Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Ahreum Kwon
- Department of Pediatrics, Severance Children's Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Hyun Wook Chae
- Department of Pediatrics, Severance Children's Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Seok Jin Kang
- Department of Pediatrics, Severance Children's Hospital, Yonsei University College of Medicine, Seoul, Korea
| | | | - Ho-Seong Kim
- Department of Pediatrics, Severance Children's Hospital, Yonsei University College of Medicine, Seoul, Korea
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Cho J, Choi SJ, Kim S, Alghamdi E, Kim HO. Frequency and pattern of noninfectious adverse transfusion reactions at a tertiary care hospital in Korea. Ann Lab Med 2017; 36:36-41. [PMID: 26522757 PMCID: PMC4697341 DOI: 10.3343/alm.2016.36.1.36] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Revised: 07/13/2015] [Accepted: 10/01/2015] [Indexed: 12/27/2022] Open
Abstract
Background Although transfusion is a paramount life-saving therapy, there are multiple potential significant risks. Therefore, all adverse transfusion reaction (ATR) episodes require close monitoring. Using the computerized reporting system, we assessed the frequency and pattern of non-infectious ATRs. Methods We analyzed two-year transfusion data from electronic medical records retrospectively. From March 2013 to February 2015, 364,569 units of blood were transfused. Of them, 334,582 (91.8%) records were identified from electronic nursing records. For the confirmation of ATRs by blood bank physicians, patients' electronic medical records were further evaluated. Results According to the nursing records, the frequency of all possible transfusion-related events was 3.1%. After the blood bank physicians' review, the frequency was found to be 1.2%. The overall frequency of febrile non-hemolytic transfusion reactions (FNHTRs) to red blood cells (RBCs), platelet (PLT) components, and fresh frozen plasmas (FFPs) were 0.9%, 0.3%, and 0.2%, respectively, and allergic reactions represented 0.3% (RBCs), 0.9% (PLTs), and 0.9% (FFPs), respectively. The pre-storage leukocyte reduction significantly decreased the frequency of FNHTRs during the transfusion of RBCs (P<0.01) or PLTs (P≒0.01). Conclusions The frequency of FNHTRs, allergic reactions, and "no reactions" were 22.0%, 17.0%, and 60.7%, respectively. Leukocyte-reduction was associated with a lower rate of FNHTRs, but not with that of allergic reactions. The development of an effective electronic reporting system of ATRs is important in quantifying transfusion-related adverse events. This type of reporting system can also accurately identify the underlying problems and risk factors to further the quality of transfusion care for patients.
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Affiliation(s)
- Jooyoung Cho
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Seung Jun Choi
- Department of Laboratory Medicine, The Armed Forces Capital Hospital, Seongnam, Korea
| | - Sinyoung Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Essam Alghamdi
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Hyun Ok Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea.
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Kim JK, Kim SJ, Kim Y, Chung YE, Park YN, Kim HO, Kim JS, Park MS, Sakaida I, Kim DY, Lee JI, Ahn SH, Lee KS, Han KH. Long-Term Follow-Up of Patients After Autologous Bone Marrow Cell Infusion for Decompensated Liver Cirrhosis. Cell Transplant 2017; 26:1059-1066. [PMID: 28120743 DOI: 10.3727/096368917x694778] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Although several human clinical trials using various bone marrow-derived cell types for cirrhotic or decompensated patients have reported a short-term benefit, long-term follow-up data are limited. We analyzed the long-term clinical outcomes of autologous bone marrow cell infusion (ABMI) for decompensated liver cirrhosis (LC). Patients enrolled in a pilot single-armed ABMI study were followed up more than 5 years. Bone marrow-derived mononuclear cells (BM-MNCs) from decompensated LC were harvested and after processing were infused into a peripheral vein. The laboratory test results and long-term clinical course including liver transplantation (LT), development of cancer, cause of death, and survival after ABMI were analyzed. Nineteen patients were followed up for a median of 66 months after ABMI. Liver function, including serum levels of albumin and Child-Pugh (CP) score, was improved at the 1-year follow-up. Liver volume was significantly greater, cirrhosis was sustained, and collagen content was decreased at the 6-month follow-up. Five years after ABMI, five patients (26.3%) maintained CP class A without LT or death, and five patients (26.3%) had undergone elective LT. Hepatocellular carcinoma (HCC) occurred in five patients (26.3%), and lymphoma and colon cancer occurred in one patient each. Three patients (15.8%) were lost to follow-up at months 22, 31, and 33, respectively, but maintained CP class A until their last follow-up. Five patients expired due to infection. While improved liver function was maintained in some patients for more than 5 years after ABMI, other patients developed HCC. Further studies of long-term follow-up cohorts after cell therapy for LC are warranted.
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Abstract
Background The Spectra Optia (SPO) is a novel continuous-flow centrifugal apheresis system based on the COBE Spectra (CSP) platform. There have been few attempts to validate the advantages of the SPO. We performed a retrospective study comparing the two cell separators for therapeutic plasma exchange (TPE) procedures in kidney transplant (KT) patients and seeing efficacy and safety. Methods We analyzed 720 TPE procedures performed between August 2012 and July 2014. Procedures included desensitization TPE before KT and TPE for the management of acute and chronic antibody-mediated graft rejection. Demographic characteristics, operational TPE variables, and laboratory data were analyzed. Results Demographic characteristics for the SPO (n=389) and CSP (n=331) groups did not differ significantly. The procedure time to exchange one plasma volume was 94.2±10.3 min in the SPO group and 100.4±11.2 min in the CSP group (P<0.001). The plasma removal efficiency (PRE) was 92.5±4.9% in the SPO group and 83.2±3.7% in the CSP group (P<0.001). There were no significant differences across the two apheresis systems for changes in hematologic parameters. Conclusions Compared with the CSP, the SPO was associated with an improved PRE and a shorter procedure time to exchange one plasma volume. Our results in KT patients show that the SPO is superior to the CSP in TPE procedures.
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Affiliation(s)
- Do Kyun Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Sinyoung Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Seok Hoon Jeong
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Hyun Ok Kim
- Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Hyung Jik Kim
- Department of Internal Medicine and Kidney Research Institute, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, Korea.
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Kim SH, Kim YS, Choi MY, Kim M, Yang JH, Park HO, Jang IS, Moon SH, Kim HO, Song DH, Lee DH, Roh GS, Kim HJ, Kang SS, Cho GJ, Choi JY, Choi WS. O-linked-N-acetylglucosamine transferase is associated with metastatic spread of human papillomavirus E6 and E7 oncoproteins to the lungs of mice. Biochem Biophys Res Commun 2016; 483:793-802. [PMID: 27845045 DOI: 10.1016/j.bbrc.2016.10.156] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 10/26/2016] [Indexed: 01/06/2023]
Abstract
High-risk human papilloma virus (HPV) 16/18 infections are often found in lung cancer. The cellular mechanisms involved in the metastatic spread of HPV-infected cervical cancer cells remain largely elusive. High O-linked-N-acetylglucosamine (O-GlcNAc) modification has also been observed in lung cancer. In the present study, we assessed the relationship between O-GlcNAc transferase (OGT) and HPV 16/18 E6/E7, or C-X-C chemokine receptor type 4 (CXCR4), in HeLa cells and in lungs of xenografted mice. Depleting OGT with an OGT-specific shRNA significantly decreased levels of E6 and E7 oncoproteins in HeLa cells and xenograft tumors, and reduced tumor formation in vivo. Western blotting and immunofluorescence analysis showed significantly decreased expression levels of E6, E7, and HCF-1 in the lungs of xenografted mice treated with an OGT-specific shRNA compared to those treated with non-targeting shRNA. Additionally, levels of E7 or OGT co-localized with Ki-67 were significantly decreased in the lungs of xenografted mice treated with OGT-specific shRNA compared to those treated with non-targeting shRNA. Moreover, levels of CXCR4 were significantly decreased in HeLa cells and in the lungs of xenografted mice treated with OGT-specific shRNA compared to those treated with non-targeting shRNA; this may be related to reduced adhesion or invasion of circulating HPV-positive tumor cells. These findings provide novel evidence that OGT functions in metastatic spread of HPV E6/E7-positive tumor cells to the lungs through E6/E7, HCF-1 and CXCR4, suggesting OGT might be a therapeutic target for HPV-positive lung cancer.
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Affiliation(s)
- Sung Hwan Kim
- Department of Thoracic and Cardiovascular Surgery, Gyeongsang National University School of Medicine, Jinju, Gyeongnam, Republic of Korea
| | - Yoon Sook Kim
- Department of Anatomy and Convergence Medical Science, Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Gyeongnam, Republic of Korea
| | - Mee Young Choi
- Department of Anatomy and Convergence Medical Science, Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Gyeongnam, Republic of Korea
| | - Minjun Kim
- Department of Anatomy and Convergence Medical Science, Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Gyeongnam, Republic of Korea
| | - Jun Ho Yang
- Department of Thoracic and Cardiovascular Surgery, Gyeongsang National University School of Medicine, Jinju, Gyeongnam, Republic of Korea
| | - Hyun Oh Park
- Department of Thoracic and Cardiovascular Surgery, Gyeongsang National University School of Medicine, Jinju, Gyeongnam, Republic of Korea
| | - In Seok Jang
- Department of Thoracic and Cardiovascular Surgery, Gyeongsang National University School of Medicine, Jinju, Gyeongnam, Republic of Korea
| | - Sung Ho Moon
- Department of Thoracic and Cardiovascular Surgery, Gyeongsang National University School of Medicine, Jinju, Gyeongnam, Republic of Korea
| | - Hyun Ok Kim
- Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Gyeongnam, Republic of Korea
| | - Dae Hyun Song
- Department of Pathology, Gyeongsang National University School of Medicine, Jinju, Gyeongnam, Republic of Korea
| | - Dong Hoon Lee
- Department of Anatomy and Convergence Medical Science, Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Gyeongnam, Republic of Korea
| | - Gu Seob Roh
- Department of Anatomy and Convergence Medical Science, Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Gyeongnam, Republic of Korea
| | - Hyun Joon Kim
- Department of Anatomy and Convergence Medical Science, Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Gyeongnam, Republic of Korea
| | - Sang Soo Kang
- Department of Anatomy and Convergence Medical Science, Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Gyeongnam, Republic of Korea
| | - Gyeong Jae Cho
- Department of Anatomy and Convergence Medical Science, Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Gyeongnam, Republic of Korea
| | - Jun Young Choi
- Department of Thoracic and Cardiovascular Surgery, Gyeongsang National University School of Medicine, Jinju, Gyeongnam, Republic of Korea
| | - Wan Sung Choi
- Department of Anatomy and Convergence Medical Science, Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Gyeongnam, Republic of Korea.
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Kim JE, Choi DS, Bae K, Cho JM, Jeong CY, Kim HO. Added value of point shear-wave elastography in the diagnosis of acute cholecystitis. Eur Radiol 2016; 27:1517-1526. [PMID: 27510624 DOI: 10.1007/s00330-016-4509-x] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Revised: 07/13/2016] [Accepted: 07/18/2016] [Indexed: 12/13/2022]
Abstract
OBJECTIVE To evaluate the added value of point shear-wave elastography (pSWE) in the diagnostic performance of conventional US for diagnosis of acute cholecystitis. METHODS B-mode and colour Doppler US and pSWE were performed prospectively in 216 patients with clinically suspected acute cholecystitis. The morphology and mural vascularity of the gallbladder and median shear wave velocity (SWV) of the right liver were evaluated. Two observers independently reviewed conventional US images and subsequently reviewed combined conventional US and pSWE images. RESULTS Mean SWVs of the acute cholecystitis group (n = 91) were significantly higher than those of the control group (n = 85) in the right liver within 2 cm lateral to the gallbladder (1.56 versus 1.03 m/s, 1.39 versus 1.04 m/s, P < 0.0001) with a cut-off value of 1.29 or 1.16 m/s. The area under the receiver operating characteristic curve of both observers in the diagnosis of acute cholecystitis improved significantly from 0.790 and 0.777 to 0.963 and 0.962, respectively, after additional review of pSWE images (P < 0.0001). Diagnostic accuracy, sensitivity, specificity, positive and negative predictive values of combined image sets were higher than those of conventional US images alone. CONCLUSION Adding pSWE to conventional US improves the diagnosis of acute cholecystitis when compared with conventional US alone. KEY POINTS • In acute cholecystitis, stiffness of the right liver increases adjacent to the gallbladder. • The cut-off value for diagnosing acute cholecystitis was 1.29 or 1.16 m/s. • Adding pSWE to conventional US improves the diagnosis of acute cholecystitis.
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Affiliation(s)
- Ji Eun Kim
- Department of Radiology, Gyeongsang National University School of medicine, 79 Gangnam-ro, Jinju, 52727, Republic of Korea
| | - Dae Seob Choi
- Department of Radiology, Gyeongsang National University School of medicine, 79 Gangnam-ro, Jinju, 52727, Republic of Korea.
| | - Kyungsoo Bae
- Department of Radiology, Gyeongsang National University School of medicine, 79 Gangnam-ro, Jinju, 52727, Republic of Korea
| | - Jae Min Cho
- Department of Radiology, Gyeongsang National University School of medicine, 79 Gangnam-ro, Jinju, 52727, Republic of Korea
| | - Chi Young Jeong
- Department of Surgery, Gyeongsang National University School of medicine, Jinju, Republic of Korea
| | - Hyun Ok Kim
- Department of Internal medicine, Gyeongsang National University School of medicine, Jinju, Republic of Korea
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You J, Heo JS, Kim HO, Kim E. Direct photo-patterning on anthracene containing polymer for guiding stem cell adhesion. Biomater Res 2016; 20:26. [PMID: 27489725 PMCID: PMC4971693 DOI: 10.1186/s40824-016-0072-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Accepted: 07/26/2016] [Indexed: 01/08/2023] Open
Abstract
Background Various micropatterned surfaces capable of guiding the selective adhesion of biomolecules such as proteins and cells are of great interests in biosensor, diagnostics, drug screening, and tissue engineering. In this study, we described a simple photo-patterning method to prepare micro-patterned films for stem cell patterning using anthracene containing polymers (PMAn). This micro patterned polymer film was prepared by the facile photo-reaction of anthracene units in polymer backbone structure. Results The UV irradiation of PMAn through a photomask resulted in the quenching of fluorescent intensity as well as the changes in surface wettability from hydrophobic to hydrophilic surface. As a result, UV exposed regions of PMAn film show lower fluorescent intensity as well as higher proliferation rate of mesenchymal stem cells (MSCs) than unexposed region of PMAn film. Furthermore, the selective MSC attachment was clearly observed in the UV exposed regions of PMAn film. Conclusion We developed a simple cell patterning method with a fluorescent, biocompatible, and patternable polymer film containing anthracene units. This method provides a facile stem cell patterning method and could be extended to various patterning of biomaterials without labor-intensive preparation and no pre-treatment for complex interactions of cell-microenvironment.
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Affiliation(s)
- Jungmok You
- Department of Plant & Environmental New Resources, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do 446-701 South Korea
| | - June Seok Heo
- Cell Therapy Center, Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - Hyun Ok Kim
- Cell Therapy Center, Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea ; Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, South Korea
| | - Eunkyoumg Kim
- Department of Chemical and Biomolecular Engineering, Yonsei University, 262 Seongsanno, Seodaemun-gu, Seoul 120-749 South Korea
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