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Lee HR, Yoo SJ, Kim J, Kang SW. LKB1 Regulates Inflammation of Fibroblast-like Synoviocytes from Patients with Rheumatoid Arthritis via AMPK-Dependent SLC7A11-NOX4-ROS Signaling. Cells 2023; 12:cells12091263. [PMID: 37174663 PMCID: PMC10177119 DOI: 10.3390/cells12091263] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 03/06/2023] [Revised: 04/13/2023] [Accepted: 04/24/2023] [Indexed: 05/15/2023] Open
Abstract
Fibroblast-like synoviocytes (FLS) in rheumatoid arthritis (RA) patients have increased reactive oxygen species (ROS) levels and an impaired redox balance compared with FLS from control patients. Liver kinase B1 (LKB1) plays a key role in ROS scavenging and cellular metabolism in various cancers. Here, we aimed to determine the specific mechanism of LKB1 in RA pathogenesis. FLS were obtained from RA patients (n = 10). siRNA-induced LKB1 deficiency in RA FLS increased ROS levels via NADPH oxidase 4 (NOX4) upregulation. RA FLS migration and expression of inflammatory factors, including interleukin (IL)-1β, IL-6, IL-8, tumor necrosis factor-alpha (TNF-α), and vascular endothelial growth factor (VEGF), were enhanced by LKB1 deficiency. LKB1-deficient RA FLS showed increased sensitivity to oxidative stress damage caused by hydrogen peroxidase exposure. siRNA-induced solute carrier family 7 member 11 (SLC7A11) deficiency in RA FLS enhanced NOX4 and ROS expression and increased cell migration. When LKB1-deficient RA FLS were stimulated with an AMP-activated protein kinase (AMPK) activator, the LKB1-inhibition-induced cell migration significantly decreased through the restoration of SLC7A11/NOX4 expression. LKB1 regulates the AMPK-mediated SLC7A11-NOX4-ROS pathway to control cell migration and inflammation. Our data indicate that LKB1 is a key regulator of redox homeostasis in RA FLS.
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Affiliation(s)
- Ha-Reum Lee
- Research Institute for Medical Sciences, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea
- Division of Rheumatology, Department of Internal Medicine, Chungnam National University Hospital, Daejeon 35015, Republic of Korea
| | - Su-Jin Yoo
- Research Institute for Medical Sciences, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea
- Division of Rheumatology, Department of Internal Medicine, Chungnam National University Hospital, Daejeon 35015, Republic of Korea
| | - Jinhyun Kim
- Research Institute for Medical Sciences, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea
- Division of Rheumatology, Department of Internal Medicine, Chungnam National University Hospital, Daejeon 35015, Republic of Korea
| | - Seong Wook Kang
- Research Institute for Medical Sciences, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea
- Division of Rheumatology, Department of Internal Medicine, Chungnam National University Hospital, Daejeon 35015, Republic of Korea
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Yoo SJ, Kim MS, Choi YW. Pericardial diverticulum arising from the right lateral superior aortic recess: a mimicker of cystic anterior mediastinal mass. Clin Radiol 2023; 78:381-386. [PMID: 36890015 DOI: 10.1016/j.crad.2023.02.005] [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: 07/24/2022] [Revised: 01/31/2023] [Accepted: 02/03/2023] [Indexed: 02/21/2023]
Abstract
AIM To report the prevalence of pericardial diverticulum of the right lateral superior aortic recess (RSAR) on computed tomography (CT), to analyse the structural CT findings of whether or not the structure is large enough to be seen on chest radiographs, and to describe changes in size and shape of RSAR on follow-up CT. MATERIALS AND METHODS A well-circumscribed, fluid-attenuation lesion in the anterior mediastinum with the following CT features was defined as a pericardial diverticulum of the RSAR: no enhancing wall, communication with the RSAR, abutment to the heart with an acute angle, and moulding by adjacent structures. Chest CT images of 31 patients with the diverticulum were evaluated, including four selected from 1,130 consecutive patients (0.4%). RESULTS The diverticulum projected ventrally from the RSAR and its largest size on axial CT ranged between 12-56 mm. Although the RSAR and the largest diverticular portion were usually seen on the same axial image (n=19), the latter sometimes lay above (n=1) or below (n=11) the former. On sagittal images, the last 11 diverticula resembled teardrops hanging from the RSAR by small stems. All of the 24 patients, each with 1-31 follow-up CT examinations, showed size fluctuations ranging between 1-46 mm (mean, 16 mm) during a follow-up period of 0.5-172 months (mean, 65 months). The diverticulum was not identifiable in five cases and was identifiable but did not show a connection with the RSAR in three cases when the diverticulum was smallest in size. CONCLUSIONS In cases of cystic anterior mediastinal mass, a deliberate search for its connection with the RSAR on all available CT images including previous studies is necessary for the diagnosis of pericardial diverticulum of the RSAR.
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Affiliation(s)
- S J Yoo
- Department of Radiology, Hanyang University Medical Center, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - M S Kim
- Department of Radiology, Hanyang University Medical Center, Hanyang University College of Medicine, Seoul, Republic of Korea; Department of Family Medicine, Samsung Medical Center, Seoul, Republic of Korea
| | - Y W Choi
- Department of Radiology, Hanyang University Medical Center, Hanyang University College of Medicine, Seoul, Republic of Korea.
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Kim JH, Lee JS, Choi BY, Cheon YH, Yoo SJ, Ju JH, Shin K, Kim ES, Baek HJ, Park W, Song YW, Hong WH, Lee YJ. Isolated Tuberculous Myositis: A Systematic Review and Multicenter Cases. J Rheum Dis 2022; 29:243-253. [PMID: 37476423 PMCID: PMC10351410 DOI: 10.4078/jrd.22.0014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 06/07/2022] [Accepted: 06/28/2022] [Indexed: 07/22/2023]
Abstract
Objective To investigate the clinical features and associated underlying conditions of isolated tuberculous myositis (ITBM), a rare extrapulmonary tuberculosis (TB). Methods A systematic literature search and a multicenter survey were performed using a triangulation strategy. Data from the identified ITBM cases were extracted and analyzed to determine the underlying conditions, clinical presentations, treatments, and outcomes. Results Based on the systematic review, we identified 58 ITBM, including 9 pediatric, cases in the literature published from 1981 to 2021 25 (43.1%) immunocompromised and 33 (56.9%) non-immunocompromised patients. Immunocompromised cases had a significant shorter symptom duration (median 30.0 vs. 75.0 days) and a higher prevalence of multilocular involvement (20.8% vs. 0%). Among 24 immunocompromised adult patients, dermatomyositis/polymyositis (DM/PM; n=10, 41.7%) were the most common underlying diseases in adults with ITBM identified in the systematic review. Over the past 20 years, 11 Korean adults with ITBM were identified in the multicenter survey. Of 7 immunocompromised cases, two (28.6%) were DM/PM patients. TB death rate of immunocompromised patients was 0.0% and 5/23 (21.7%) in the pediatric and adult ITBM cases identified in the systematic review, respectively, and 3/7 (42.9%) in survey-identified ITBM cases. Conclusion ITBM has a unique clinical presentation including fever, tenderness, local swelling, overlying erythema, abscess formation and was associated with a grave outcome, especially in immunocompromised hosts. DM/PM was a highly prevalent underlying disease in both systematic review-identified and survey-identified immunocompromised ITBM patients.
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Affiliation(s)
- Ji Hyoun Kim
- Division of Rheumatology, Department of Internal Medicine, Chungbuk National University Hospital, Cheongju, Korea
| | - Jeong Seok Lee
- Division of Rheumatology, Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea
| | - Byoong Yong Choi
- Division of Rheumatology, Department of Internal Medicine, Seoul Medical Center, Seoul, Korea
| | - Yun-Hong Cheon
- Division of Rheumatology, Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Korea
| | - Su-Jin Yoo
- Daejeon Rheumatoid & Degenerative Arthritis Center, Chungnam National University Hospital, Daejeon, Korea
| | - Ji Hyeon Ju
- Division of Rheumatology, Department of Internal Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Kichul Shin
- Division of Rheumatology, Department of Internal Medicine, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul, Korea
| | - Eu Suk Kim
- Division of Infectious Diseases, Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Han Joo Baek
- Division of Rheumatology, Department of Internal Medicine, Gachon University Gil Medical Center, Incheon, Korea
| | - Won Park
- Medicine/Rheumatology, School of Medicine, Inha University, Incheon, Korea
| | - Yeong Wook Song
- Division of Rheumatology, Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea
- Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, Korea
| | - Woi-Hyun Hong
- College of Medicine and Medical Research Information Center (MedRIC), Chungbuk National University, Cheongju, Korea
| | - Yun Jong Lee
- Division of Rheumatology, Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
- Department of Internal Medicine, College of Medicine, Seoul National University, Seoul, Korea
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Lee HR, Lee S, Yoo IS, Yoo SJ, Kwon MH, Joung CI, Park JA, Wook Kang S, Kim J. CD14+ monocytes and soluble CD14 of synovial fluid are associated with osteoarthritis progression. Arch Rheumatol 2022; 37:335-343. [PMID: 36589618 PMCID: PMC9791551 DOI: 10.46497/archrheumatol.2022.9078] [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: 07/12/2021] [Accepted: 10/02/2021] [Indexed: 01/15/2023] Open
Abstract
Objectives This study aims to investigate the role of cluster of differentiation 14 (CD14) expressed monocytes and soluble CD14-mediated pathway in the synovial inflammation of knee osteoarthritis (OA). Patients and methods Between May 2012 and July 2013, a total of 35 patients with knee OA (9 males, 26 females; mean age: 66.3±8.8 years; range, 52 to 79 years) were included in this cross-sectional study. Synovial fluid was obtained from knee joints of 35 OA patients. The CD14+ monocytes from synovial fluid mononuclear cells (SFMCs) were isolated using the MACS. The fibroblast-like synoviocytes (FLSs) isolated from knee joint tissue were incubated with recombinant CD14 and lipopolysaccharide (LPS) for 24 h. Cytokine profiling was performed with the Luminex® Performance Assay or magnetic bead panel kit. The expression of CD14 and CD16 was analyzed by immunohistochemistry and flow cytometry. Results The concentration of sCD14 in synovial fluid was correlated with the interleukin-6 (IL-6) level (n=35) (ρ=0.654, p<0.001). The culture supernatants of CD14+ monocytes isolated from SFMC (n=15) showed a correlation between sCD14 and IL-6 (ρ=0.784, p=0.001), along with complement component 3 (ρ=0.756, p=0.010), IL-1b (ρ=0.652, p=0.012), and tumor necrosis factor-alpha (ρ=0.806, p=0.001). Following recombinant CD14 and LPS treatment, OA FLS synergistically enhanced the secretion of IL-6, IL-8, and matrix metalloproteinase 3 (n=3, p<0.05). In five paired-samples from identical patients, the proportions of CD14+ monocytes were significantly elevated in recurred synovial fluid compared to those in initial synovial fluid (p=0.043). When monocyte subsets were analyzed in SFMC (n=26), CD14+CD16+monocytes were abundant (p=0.019) and had higher toll-like receptor 4 expression than CD14+CD16- (p<0.001). Conclusion Our study results suggest that CD14+ monocytes and the sCD14-mediated pathway play an important role in OA aggravation through inflammatory cytokine secretion.
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Affiliation(s)
- Ha-Reum Lee
- Department of Internal Medicine, Division of Rheumatology, Chungnam National University Hospital, Daejeon, Republic of Korea
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Research Institute for Medical Sciences, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Sunyoung Lee
- Department of Internal Medicine, Division of Rheumatology, Chungnam National University Hospital, Daejeon, Republic of Korea
| | - In Seol Yoo
- Department of Internal Medicine, Division of Rheumatology, Chungnam National University Hospital, Daejeon, Republic of Korea
| | - Su-Jin Yoo
- Department of Internal Medicine, Division of Rheumatology, Chungnam National University Hospital, Daejeon, Republic of Korea
| | - Mi-Hye Kwon
- Department of Internal Medicine, Konyang University School of Medicine, Daejeon, Republic of Korea
| | - Chung-il Joung
- Department of Internal Medicine, Konyang University School of Medicine, Daejeon, Republic of Korea
| | - Ji Ah Park
- Department of Internal Medicine, Division of Rheumatology, Chungnam National University Hospital, Daejeon, Republic of Korea
| | - Seong Wook Kang
- Department of Internal Medicine, Division of Rheumatology, Chungnam National University Hospital, Daejeon, Republic of Korea
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Research Institute for Medical Sciences, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Jinhyun Kim
- Department of Internal Medicine, Division of Rheumatology, Chungnam National University Hospital, Daejeon, Republic of Korea
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Yoo SJ, Lee HR, Kim J, Yoo IS, Park CK, Kang SW. Hypoxia-Inducible Factor-2 Alpha Regulates the Migration of Fibroblast-like Synoviocytes via Oxidative Stress-Induced CD70 Expression in Patients with Rheumatoid Arthritis. Int J Mol Sci 2022; 23:ijms23042342. [PMID: 35216458 PMCID: PMC8877612 DOI: 10.3390/ijms23042342] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 02/18/2022] [Accepted: 02/19/2022] [Indexed: 02/04/2023] Open
Abstract
This study aimed to examine the role of CD70, which is highly expressed on fibroblast-like synoviocytes (FLS), in rheumatoid arthritis (RA) patients. FLS isolated from RA (n = 14) and osteoarthritis (OA, n = 4) patients were stimulated with recombinant interleukin-17 (IL-17; 5 ng/mL) and tumor necrosis factor alpha (TNF-α; 5 ng/mL) for 24 h. Expression of CD70, CD27/soluble CD27 (sCD27), and hypoxia-inducible factor-2 alpha (HIF-2α) was analyzed by RT-qPCR, flow cytometry, and ELISA assays, respectively. Reactive oxygen species (ROS) expression and cell migration were also examined. The HIF-2α inhibitor PT-2385 and CD70 inhibitor BU69 were used to specifically suppress these pathways. Stimulation with IL-17 and TNF-α significantly induced CD70 expression in RA FLS. Although the synovial fluids from patients with RA contained high levels of sCD27, surface expression of CD27, a ligand of CD70, was rarely detected in RA FLS. Cytokine-induced CD70 expression was significantly decreased following antioxidant treatment. Following HIF-2α inhibition, RA FLS had decreased expression of CD70 and ROS levels. Migration of RA FLS was also inhibited by inhibition of CD70 or HIF-2α. The surface expression of CD70 is regulated by HIF-2α and ROS levels and is a key contributor to cytokine-enhanced migration in RA FLS.
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Affiliation(s)
- Su-Jin Yoo
- Division of Rheumatology, Department of Internal Medicine, Chungnam National University Hospital, 282 Munhwaro, Daejeon 35015, Korea; (S.-J.Y.); (H.-R.L.); (J.K.)
- Research Institute for Medical Sciences, Chungnam National University School of Medicine, 266 Munhwaro, Daejeon 35015, Korea
| | - Ha-Reum Lee
- Division of Rheumatology, Department of Internal Medicine, Chungnam National University Hospital, 282 Munhwaro, Daejeon 35015, Korea; (S.-J.Y.); (H.-R.L.); (J.K.)
- Research Institute for Medical Sciences, Chungnam National University School of Medicine, 266 Munhwaro, Daejeon 35015, Korea
| | - Jinhyun Kim
- Division of Rheumatology, Department of Internal Medicine, Chungnam National University Hospital, 282 Munhwaro, Daejeon 35015, Korea; (S.-J.Y.); (H.-R.L.); (J.K.)
| | - In Seol Yoo
- Division of Rheumatology, Department of Internal Medicine, Chungnam National University Sejong Hospital, 20 Bodeum-7-ro, Sejong 30099, Korea; (I.S.Y.); (C.K.P.)
| | - Chan Keol Park
- Division of Rheumatology, Department of Internal Medicine, Chungnam National University Sejong Hospital, 20 Bodeum-7-ro, Sejong 30099, Korea; (I.S.Y.); (C.K.P.)
| | - Seong Wook Kang
- Division of Rheumatology, Department of Internal Medicine, Chungnam National University Hospital, 282 Munhwaro, Daejeon 35015, Korea; (S.-J.Y.); (H.-R.L.); (J.K.)
- Research Institute for Medical Sciences, Chungnam National University School of Medicine, 266 Munhwaro, Daejeon 35015, Korea
- Correspondence: ; Tel.: +82-42-338-2428
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Kim B, Kim HY, Yoon BR, Yeo J, In Jung J, Yu KS, Kim HC, Yoo SJ, Park JK, Kang SW, Lee WW. Cytoplasmic zinc promotes IL-1β production by monocytes and macrophages through mTORC1-induced glycolysis in rheumatoid arthritis. Sci Signal 2022; 15:eabi7400. [PMID: 35015571 DOI: 10.1126/scisignal.abi7400] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Bonah Kim
- Laboratory of Autoimmunity and Inflammation (LAI), Department of Biomedical Sciences, and BK21Plus Biomedical Science Project, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Hee Young Kim
- Laboratory of Autoimmunity and Inflammation (LAI), Department of Biomedical Sciences, and BK21Plus Biomedical Science Project, Seoul National University College of Medicine, Seoul 03080, Republic of Korea.,Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul 03080, Republic of Korea.,Institute of Infectious Diseases, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Bo Ruem Yoon
- Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Jina Yeo
- Division of Rheumatology, Department of Internal Medicine, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Ji In Jung
- Division of Rheumatology, Department of Internal Medicine, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Kyung-Sang Yu
- Department of Clinical Pharmacology and Therapeutics, Seoul National University College of Medicine and Hospital, Seoul 03080, Republic of Korea
| | - Hyeon Chang Kim
- Department of Preventive Medicine, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Su-Jin Yoo
- Department of Internal Medicine, Chungnam National University School of Medicine, 282 Munhwa-ro, Jung-gu, Daejeon 35015, Republic of Korea
| | - Jin Kyun Park
- Division of Rheumatology, Department of Internal Medicine, Seoul National University College of Medicine, Seoul 03080, Republic of Korea
| | - Seong Wook Kang
- Department of Internal Medicine, Chungnam National University School of Medicine, 282 Munhwa-ro, Jung-gu, Daejeon 35015, Republic of Korea
| | - Won-Woo Lee
- Laboratory of Autoimmunity and Inflammation (LAI), Department of Biomedical Sciences, and BK21Plus Biomedical Science Project, Seoul National University College of Medicine, Seoul 03080, Republic of Korea.,Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul 03080, Republic of Korea.,Cancer Research Institute, Ischemic/Hypoxic Disease Institute, and Institute of Infectious Diseases, Seoul National University College of Medicine, Seoul National University Hospital Biomedical Research Institute, Seoul 03080, Republic of Korea
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Lee HR, Yoo SJ, Kim J, Park CK, Kang SW. Reduction of Oxidative Stress in Peripheral Blood Mononuclear Cells Attenuates the Inflammatory Response of Fibroblast-like Synoviocytes in Rheumatoid Arthritis. Int J Mol Sci 2021; 22:ijms222212411. [PMID: 34830290 PMCID: PMC8624216 DOI: 10.3390/ijms222212411] [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] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 11/12/2021] [Accepted: 11/15/2021] [Indexed: 12/29/2022] Open
Abstract
The production and oxidation mechanism of reactive oxygen species (ROS) are out of balance in rheumatoid arthritis (RA). However, the correlation between ROS and T cell subsets in RA remains unclear. Peripheral blood mononuclear cells (PBMCs) from patients with RA (n = 40) and healthy controls (n = 10) were isolated from whole blood samples. Synovial tissues (n = 3) and synovial fluid (n = 10) were obtained from patients with RA. The repartition of T cell subsets and expression of ROS and cytokines were examined according to RA severity. Fibroblast-like synoviocytes (FLSs) from patients with RA were stimulated with PBMCs and the expression of inflammation-related molecules were measured by RT-PCR and cytokine array. Regulatory T cells from patients with moderate (5.1 > DAS28 ≥ 3.2) RA showed the highest expression of mitochondrial ROS among the groups based on disease severity. Although ROS levels steadily increased with RA severity, there was a slight decline in severe RA (DAS28 ≥ 5.1) compared with moderate RA. The expression of inflammatory cytokines in RA FLSs were significantly inhibited when FLSs were co-cultured with PBMCs treated with ROS inhibitor. These findings provide a novel approach to suppress inflammatory response of FLSs through ROS regulation in PBMCs.
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Affiliation(s)
- Ha-Reum Lee
- Division of Rheumatology, Department of Internal Medicine, Chungnam National University Hospital, 282 Munhwaro, Daejeon 35015, Korea; (H.-R.L.); (S.-J.Y.); (J.K.)
- Research Institute for Medical Sciences, School of Medicine, Chungnam National University, 266 Munhwaro, Daejeon 35015, Korea
| | - Su-Jin Yoo
- Division of Rheumatology, Department of Internal Medicine, Chungnam National University Hospital, 282 Munhwaro, Daejeon 35015, Korea; (H.-R.L.); (S.-J.Y.); (J.K.)
| | - Jinhyun Kim
- Division of Rheumatology, Department of Internal Medicine, Chungnam National University Hospital, 282 Munhwaro, Daejeon 35015, Korea; (H.-R.L.); (S.-J.Y.); (J.K.)
| | - Chan Keol Park
- Division of Rheumatology, Department of Internal Medicine, Chungnam National University Sejong Hospital, 20 Bodeum-7-ro, Sejong 30099, Korea;
| | - Seong Wook Kang
- Division of Rheumatology, Department of Internal Medicine, Chungnam National University Hospital, 282 Munhwaro, Daejeon 35015, Korea; (H.-R.L.); (S.-J.Y.); (J.K.)
- Research Institute for Medical Sciences, School of Medicine, Chungnam National University, 266 Munhwaro, Daejeon 35015, Korea
- Correspondence: ; Tel.: +82-42-338-2428
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Yoo IS, Lee YR, Kang SW, Kim J, Joo HK, Yoo SJ, Park CK, Lee HR, Park JA, Jeon BH. Elevated APE1/Ref-1 Levels of Synovial Fluids in Patients with Rheumatoid Arthritis: Reflection of Disease Activity. J Clin Med 2021; 10:jcm10225324. [PMID: 34830606 PMCID: PMC8621376 DOI: 10.3390/jcm10225324] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 11/10/2021] [Accepted: 11/15/2021] [Indexed: 11/16/2022] Open
Abstract
There is growing evidence that apurinic/apyrimidinic endonuclease 1/redox factor-1 (APE1/Ref-1) regulates inflammatory responses. Rheumatoid arthritis (RA) is an autoimmune disease, which is characterized with synovitis and joint destruction. Therefore, this study was planned to investigate the relationship between APE1/Ref-1 and RA. Serum and synovial fluid (SF) were collected from 46 patients with RA, 45 patients with osteoarthritis (OA), and 30 healthy control (HC) patients. The concentration of APE1/Ref-1 in serum or SF was measured using the sandwich enzyme-linked immunosorbent assay (ELISA). The disease activity in RA patients was measured using the 28-joint disease activity score (DAS28). The serum APE1/Ref-1 levels in RA patients were significantly increased compared to HC and OA patients (0.44 ± 0.39 ng/mL for RA group vs. 0.19 ± 0.14 ng/mL for HC group, p < 0.05 and vs. 0.19 ± 0.11 ng/mL for OA group, p < 0.05). Likewise, the APE1/Ref-1 levels of SF in RA patients were also significantly increased compared to OA patients (0.68 ± 0.30 ng/mL for RA group vs. 0.31 ± 0.12 ng/mL for OA group, p < 0.001). The APE1/Ref-1 concentration in SF of RA patients was positively correlated with DAS28. Thus, APE1/Ref-1 may reflect the joint inflammation and be associated with disease activity in RA.
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Affiliation(s)
- In Seol Yoo
- Division of Rheumatology, Department of Internal Medicine, Chungnam National University Sejong Hospital, 20 Bodeum 7-ro, Sejong 30099, Korea; (I.S.Y.); (C.K.P.)
- Department of Internal Medicine, College of Medicine, Chungnam National University, 266 Munhwa-ro, Jung-gu, Daejeon 35015, Korea; (S.W.K.); (J.K.); (S.-J.Y.)
| | - Yu-Ran Lee
- Research Institute for Medical Sciences, College of Medicine, Chungnam National University, 266 Munhwa-ro, Jung-gu, Daejeon 35015, Korea; (Y.-R.L.); (H.-K.J.); (H.-R.L.); (J.A.P.)
- Department of Physiology, College of Medicine, Chungnam National University, 266 Munhwa-ro, Jung-gu, Daejeon 35015, Korea
| | - Seong Wook Kang
- Department of Internal Medicine, College of Medicine, Chungnam National University, 266 Munhwa-ro, Jung-gu, Daejeon 35015, Korea; (S.W.K.); (J.K.); (S.-J.Y.)
- Division of Rheumatology, Department of Internal Medicine, Chungnam National University Hospital, 282 Munhwa-ro, Jung-gu, Daejeon 35015, Korea
| | - Jinhyun Kim
- Department of Internal Medicine, College of Medicine, Chungnam National University, 266 Munhwa-ro, Jung-gu, Daejeon 35015, Korea; (S.W.K.); (J.K.); (S.-J.Y.)
- Division of Rheumatology, Department of Internal Medicine, Chungnam National University Hospital, 282 Munhwa-ro, Jung-gu, Daejeon 35015, Korea
| | - Hee-Kyoung Joo
- Research Institute for Medical Sciences, College of Medicine, Chungnam National University, 266 Munhwa-ro, Jung-gu, Daejeon 35015, Korea; (Y.-R.L.); (H.-K.J.); (H.-R.L.); (J.A.P.)
- Department of Physiology, College of Medicine, Chungnam National University, 266 Munhwa-ro, Jung-gu, Daejeon 35015, Korea
| | - Su-Jin Yoo
- Department of Internal Medicine, College of Medicine, Chungnam National University, 266 Munhwa-ro, Jung-gu, Daejeon 35015, Korea; (S.W.K.); (J.K.); (S.-J.Y.)
- Division of Rheumatology, Department of Internal Medicine, Chungnam National University Hospital, 282 Munhwa-ro, Jung-gu, Daejeon 35015, Korea
| | - Chan Keol Park
- Division of Rheumatology, Department of Internal Medicine, Chungnam National University Sejong Hospital, 20 Bodeum 7-ro, Sejong 30099, Korea; (I.S.Y.); (C.K.P.)
- Department of Internal Medicine, College of Medicine, Chungnam National University, 266 Munhwa-ro, Jung-gu, Daejeon 35015, Korea; (S.W.K.); (J.K.); (S.-J.Y.)
| | - Ha-Reum Lee
- Research Institute for Medical Sciences, College of Medicine, Chungnam National University, 266 Munhwa-ro, Jung-gu, Daejeon 35015, Korea; (Y.-R.L.); (H.-K.J.); (H.-R.L.); (J.A.P.)
| | - Ji Ah Park
- Research Institute for Medical Sciences, College of Medicine, Chungnam National University, 266 Munhwa-ro, Jung-gu, Daejeon 35015, Korea; (Y.-R.L.); (H.-K.J.); (H.-R.L.); (J.A.P.)
| | - Byeong-Hwa Jeon
- Research Institute for Medical Sciences, College of Medicine, Chungnam National University, 266 Munhwa-ro, Jung-gu, Daejeon 35015, Korea; (Y.-R.L.); (H.-K.J.); (H.-R.L.); (J.A.P.)
- Department of Physiology, College of Medicine, Chungnam National University, 266 Munhwa-ro, Jung-gu, Daejeon 35015, Korea
- Correspondence: ; Tel.: +82-42-580-8214
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9
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Petoussi-Henss N, Satoh D, Endo A, Eckerman KF, Bolch WE, Hunt J, Jansen JTM, Kim CH, Lee C, Saito K, Schlattl H, Yeom YS, Yoo SJ. ICRP Publication 144: Dose Coefficients for External Exposures to Environmental Sources. Ann ICRP 2021; 49:11-145. [PMID: 33115250 DOI: 10.1177/0146645320906277] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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10
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Aly S, Papneja K, Mawad W, Jaeggi E, Yoo SJ. Prenatal diagnosis of vascular ring: evaluation of fetal diagnosis and postnatal outcomes. Eur Heart J Cardiovasc Imaging 2021. [DOI: 10.1093/ehjci/jeaa356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
The performance of fetal echocardiogram in diagnosing vascular ring (VR) and its impact on postnatal outcomes has not been well examined.
Methods
We reviewed all patients with VR diagnosis from 2000-2020.
Results
50 patients with antenatal diagnosis of VR; 42(84%) with right aortic arch aberrant left subclavian artery and left-sided ductus arteriosus ((RAA-ALS) and 8(16%) with double aortic arch (DAA) were compared to 120 patients with postnatal diagnosis; 90(75%) with DAA, 22(18%) with RAA-ALS (Table 1). Prenatal diagnosis of VR increased over study period; 4 vs 31, 10 vs 29, 14 vs 25, 22 vs 35 between 2000-2005, 2005-2010, 2010-2015, and 2015-2020 respectively, p< 0.01. Prenatal diagnosis of VR was associated with less symptoms [26(52%) vs 72(60%), p < 0.003] and less cross-sectional imaging [22(44%) vs 82(69%), p = 0.0001]. Postnatal diagnosis of VR was associated with more surgical interventions (102(85%) vs 28(56%), p = 0.002), later surgical repair (22.9 ± 35 vs 12.6 ± 10.2 months, p < 0.01), more postoperative complications [8/102 (7.8%) vs 1/28 (3.5%), p = 0.04] and more residual symptoms (2/28(7%) vs 30/102(29%), p = 0.001 respectively].
Conclusion
Prenatal diagnosis of VR has evolved over time. RAA-ALS versus DAA were dominant in the prenatally and postnatally diagnosed cohorts respectively. Prenatal diagnosis of VR was associated less symptoms, less cross-sectional imaging, earlier age of surgical intervention and less residual symptoms.
Table 1 Prenatal Diagnosis (N = 50) Postnatal Diagnosis (N = 120) p-value Gestational Age (weeks) 39 ± 3 38 ± 2 0.9 Male (%) 31 (62%) 69(58%) 0.8 Subtype of vascular ring: Double aortic arch RAA-ALSA Others 8 (16%) 42 (80 %) 0 (0 %) 90 (72%) 22 (17%) 8 (11%) 0.002 0.01 Associated intracardiac CHD: VSD TOF DORV AVSD Coarctation of aorta Others 11 (22%) 1 1 3 0 3 3 24 (20%) 5 7 2 2 3 5 0.8 Associated genetic diagnosis: 22q11 deletion Trisomy 21 Others 9 (18%) 6 3 0 32 (26%) 29 3 0 0.1 Symptomatic presentation: Respiratory Gastrointestinal 26 (52 %) 15 11 72 (60 %) 57 15 <0.03 Age at first symptoms (month) 3.2 ± 2.8 21.6 ± 37 0.01 Diagnostic modalities: Fetal echocardiogram Postnatal echocardiogram Barium swallow Bronchoscopy CT scan MRI 50 (100%) 50 (100%) 2 (4%) 3 (6%) 18 (36 %) 4 (8%) 0 (0%) 120 (100%) 23 (25 %) 18 (15 %) 65 (54%) 7 (14%) Surgical repair 28 (56%) 102 (85%) 0.02 Age at surgical repair (month) 12.6 ± 10.2 22.9 ± 35 <0.01 Postoperative complications 1 (3%) 8 (7%) 0.03 Residual symptoms 2 (1%) 30 (25%) 0.001 Age at most recent follow up (mo) 26 ± 7 60 ± 7 0.02 Table 1: Comparison of patients with prenatal versus postnatal diagnosis of vascular ring
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Affiliation(s)
- S Aly
- Hospital for Sick Children, Toronto, Canada
| | - K Papneja
- Hospital for Sick Children, Toronto, Canada
| | - W Mawad
- Hospital for Sick Children, Toronto, Canada
| | - E Jaeggi
- Hospital for Sick Children, Toronto, Canada
| | - SJ Yoo
- Hospital for Sick Children, Toronto, Canada
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11
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Kim DH, Kim HY, Cho S, Yoo SJ, Kim WJ, Yeon HR, Choi K, Choi JM, Kang SW, Lee WW. Induction of the IL-1RII decoy receptor by NFAT/FOXP3 blocks IL-1β-dependent response of Th17 cells. eLife 2021; 10:61841. [PMID: 33507149 PMCID: PMC7872515 DOI: 10.7554/elife.61841] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 01/28/2021] [Indexed: 12/29/2022] Open
Abstract
Derived from a common precursor cell, the balance between Th17 and Treg cells must be maintained within immune system to prevent autoimmune diseases. IL-1β-mediated IL-1 receptor (IL-1R) signaling is essential for Th17-cell biology. Fine-tuning of IL-1R signaling is controlled by two receptors, IL-1RI and IL-RII, IL-1R accessory protein, and IL-1R antagonist. We demonstrate that the decoy receptor, IL-1RII, is important for regulating IL-17 responses in TCR-stimulated CD4+ T cells expressing functional IL-1RI via limiting IL-1β responsiveness. IL-1RII expression is regulated by NFAT via its interaction with Foxp3. The NFAT/FOXP3 complex binds to the IL-1RII promoter and is critical for its transcription. Additionally, IL-1RII expression is dysregulated in CD4+ T cells from patients with rheumatoid arthritis. Thus, differential expression of IL-1Rs on activated CD4+ T cells defines unique immunological features and a novel molecular mechanism underlies IL-1RII expression. These findings shed light on the modulatory effects of IL-1RII on Th17 responses.
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Affiliation(s)
- Dong Hyun Kim
- Laboratory of Autoimmunity and Inflammation (LAI), Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Hee Young Kim
- Laboratory of Autoimmunity and Inflammation (LAI), Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea.,Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul, Republic of Korea.,Cancer Research Institute and Institute of Infectious Diseases, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Sunjung Cho
- Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Su-Jin Yoo
- Department of Internal Medicine, Chungnam National University School of Medicine, 282 Munhwa-ro, Jung-gu, Daejeon, Republic of Korea
| | - Won-Ju Kim
- Department of Life Science, College of Natural Sciences and Research Institute for Natural Sciences, Hanyang University, Seoul, Republic of Korea
| | - Hye Ran Yeon
- Department of Biochemistry and Molecular Biology, Department of Biomedical Sciences, and Cancer Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Kyungho Choi
- Department of Biochemistry and Molecular Biology, Department of Biomedical Sciences, and Cancer Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Je-Min Choi
- Department of Life Science, College of Natural Sciences and Research Institute for Natural Sciences, Hanyang University, Seoul, Republic of Korea
| | - Seong Wook Kang
- Department of Internal Medicine, Chungnam National University School of Medicine, 282 Munhwa-ro, Jung-gu, Daejeon, Republic of Korea
| | - Won-Woo Lee
- Laboratory of Autoimmunity and Inflammation (LAI), Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea.,Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul, Republic of Korea.,Cancer Research Institute and Institute of Infectious Diseases, Seoul National University College of Medicine, Seoul, Republic of Korea.,Ischemic/Hypoxic Disease Institute, Seoul National University College of Medicine; Seoul National University Hospital Biomedical Research Institute, Seoul, Republic of Korea
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12
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Lee SJ, Yoon BR, Kim HY, Yoo SJ, Kang SW, Lee WW. Activated Platelets Convert CD14 +CD16 - Into CD14 +CD16 + Monocytes With Enhanced FcγR-Mediated Phagocytosis and Skewed M2 Polarization. Front Immunol 2021; 11:611133. [PMID: 33488616 PMCID: PMC7817612 DOI: 10.3389/fimmu.2020.611133] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 11/20/2020] [Indexed: 12/24/2022] Open
Abstract
Monocytes are important cellular effectors of innate immune defense. Human monocytes are heterogeneous and can be classified into three distinct subsets based on CD14 and CD16 expression. The expansion of intermediate CD14+CD16+ monocytes has been reported in chronic inflammatory diseases including rheumatoid arthritis (RA). However, the mechanism underlying induction of CD16 and its role in monocytes remains poorly understood. Here, we demonstrate that activated platelets are important for induction of CD16 on classical CD14+CD16- monocytes by soluble factors such as cytokines. Cytokine neutralization and signaling inhibition assays reveal that sequential involvement of platelet-derived TGF-β and monocyte-derived IL-6 contribute to CD16 induction on CD14+CD16- monocytes. Activated platelet-induced CD16 on monocytes participates in antibody-dependent cellular phagocytosis (ADCP) and its level is positively correlated with phagocytic activity. CD14+CD16- monocytes treated with activated platelets preferentially differentiate into M2 macrophages, likely the M2c subset expressing CD163 and MerTK. Lastly, the amount of sCD62P, a marker of activated platelets, is significantly elevated in plasma of RA patients and positively correlates with clinical parameters of RA. Our findings suggest an important role of activated platelets in modulating phenotypical and functional features of human monocytes. This knowledge increases understanding of the immunological role of CD14+CD16+ cells in chronic inflammatory diseases.
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Affiliation(s)
- Su Jeong Lee
- Laboratory of Autoimmunity and Inflammation (LAI), Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, South Korea.,BK21Plus Biomedical Science Project, Seoul National University College of Medicine, Seoul, South Korea
| | - Bo Ruem Yoon
- Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul, South Korea
| | - Hee Young Kim
- Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul, South Korea.,Institute of Infectious Diseases, Seoul National University College of Medicine, Seoul, South Korea
| | - Su-Jin Yoo
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Seong Wook Kang
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Won-Woo Lee
- Laboratory of Autoimmunity and Inflammation (LAI), Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, South Korea.,Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul, South Korea.,Institute of Infectious Diseases, Seoul National University College of Medicine, Seoul, South Korea.,Cancer Research Institute, Seoul National University College of Medicine, Seoul National University Hospital Biomedical Research Institute, Seoul, South Korea.,Ischemic/Hypoxic Disease Institute, Seoul National University College of Medicine, Seoul, South Korea.,Seoul National University Hospital Biomedical Research Institute, Seoul, South Korea
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13
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Roh YH, Yoo SJ, Choi YH, Yang HC, Nam KW. Effects of Inflammatory Disease on Clinical Progression and Treatment of Ischiogluteal Bursitis: A Retrospective Observational Study. Malays Orthop J 2021; 14:32-41. [PMID: 33403060 PMCID: PMC7752025 DOI: 10.5704/moj.2011.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Introduction: The symptoms of Ischiogluteal Bursitis (IGB) are often nonspecific and atypical, and its diagnosis is more challenging. Moreover, it is difficult to predict cases of chronic progression or poor treatment response. Therefore, the aim of this study was to investigate the clinical course of IGB patients and identify factors that are predictive of failure of conservative treatment. Materials and Methods: Our study consisted of IGB patients diagnosed between 2010 March and 2016 December who had been followed-up for at least one year. Structured questionnaires and medical records were reviewed to analyse demographic characteristics, lifestyle patterns, blood tests, and imaging studies. We categorized the cases into two groups based on the response to conservative treatment and the need for surgical intervention. Results: The most common initial chief symptoms were buttock pains in 24 patients (37.5%). Physical examinations showed the tenderness of ischial tuberosity area in 59 (92.2%) patients, but no specific findings were confirmed in 5 patients (7.8%). 51 patients (79.7%) responded well to the conservative management, 11 patients (17.2%) needed injection, and 2 patients (3.1%) had surgical treatment performed due to continuous recurrence. There was no difference in demographic and blood lab data between the two groups. However, the incidence of inflammatory diseases (response group: 10.3% vs non-response group: 66.7%, p=0.004) was significantly different between the two groups. Conclusion: The diagnosis of IGB can be missed due to variations in clinical symptoms, and cautions should be exercised in patients with inflammatory diseases as conservative treatment is less effective in them, leading to chronic progression of IGB.
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Affiliation(s)
- Y H Roh
- Department of Orthopaedics, Jeju National University Hospital, Jeju City, Republic of Korea
| | - S J Yoo
- Department of Orthopaedics, Jeju National University Hospital, Jeju City, Republic of Korea
| | - Y H Choi
- Department of Orthopaedics, Jeju National University Hospital, Jeju City, Republic of Korea
| | - H C Yang
- Department of Orthopaedics, Jeju National University Hospital, Jeju City, Republic of Korea
| | - K W Nam
- Department of Orthopaedics, Jeju National University Hospital, Jeju City, Republic of Korea
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14
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Lee HR, Yoo SJ, Kim J, Yoo IS, Park CK, Kang SW. The effect of nicotinamide adenine dinucleotide phosphate oxidase 4 on migration and invasion of fibroblast-like synoviocytes in rheumatoid arthritis. Arthritis Res Ther 2020; 22:116. [PMID: 32414400 PMCID: PMC7227051 DOI: 10.1186/s13075-020-02204-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 04/28/2020] [Indexed: 12/12/2022] Open
Abstract
Background Reactive oxygen species (ROS) regulate the migration and invasion of fibroblast-like synoviocytes (FLS), which are key effector cells in rheumatoid arthritis (RA) pathogenesis. Nicotinamide adenine dinucleotide phosphate oxidase 4 (NOX4) induces ROS generation and, consequently, enhances cell migration. Despite the important interrelationship between RA, FLS, and ROS, the effect of NOX4 on RA pathogenesis remains unclear. Methods FLS isolated from RA (n = 5) and osteoarthritis (OA, n = 5) patients were stimulated with recombinant interleukin 17 (IL-17; 10 ng/ml) and tumor necrosis factor alpha (TNF-α; 10 ng/ml) for 1 h. Cell migration, invasion, adhesion molecule expression, vascular endothelial growth factor (VEGF) secretion, and ROS expression were examined. The mRNA and protein levels of NOX4 were analyzed by RT-qPCR and western blotting, respectively. The NOX4 inhibitor GLX351322 and NOX4 siRNA were used to inhibit NOX4 to probe the effect of NOX4 on these cellular processes. Results Migration of RA FLS was increased 2.48-fold after stimulation with IL-17 and TNF-α, while no difference was observed for OA FLS. ROS expression increased in parallel with invasiveness of FLS following cytokine stimulation. When the expression of NOX was examined, NOX4 was significantly increased by 9.73-fold in RA FLS compared to unstimulated FLS. Following NOX4 inhibition, cytokine-induced vascular cell adhesion molecule 1 (VCAM1), VEGF, and migration and invasion capacity of RA FLS were markedly decreased to unstimulated levels. Conclusion NOX4 is a key contributor to cytokine-enhanced migration and invasion via modulation of ROS, VCAM1, and VEGF in RA FLS.
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Affiliation(s)
- Ha-Reum Lee
- Research Institute for Medical Sciences, Chungnam National University School of Medicine, 266 Munhwaro, Daejeon, Republic of Korea.,Division of Rheumatology, Department of Internal Medicine, Chungnam National University Hospital, 282 Munhwaro, Daejeon, 35015, Republic of Korea
| | - Su-Jin Yoo
- Division of Rheumatology, Department of Internal Medicine, Chungnam National University Hospital, 282 Munhwaro, Daejeon, 35015, Republic of Korea
| | - Jinhyun Kim
- Division of Rheumatology, Department of Internal Medicine, Chungnam National University Hospital, 282 Munhwaro, Daejeon, 35015, Republic of Korea
| | - In Seol Yoo
- Division of Rheumatology, Department of Internal Medicine, Chungnam National University Hospital, 282 Munhwaro, Daejeon, 35015, Republic of Korea
| | - Chan Keol Park
- Division of Rheumatology, Department of Internal Medicine, Chungnam National University Hospital, 282 Munhwaro, Daejeon, 35015, Republic of Korea
| | - Seong Wook Kang
- Research Institute for Medical Sciences, Chungnam National University School of Medicine, 266 Munhwaro, Daejeon, Republic of Korea. .,Division of Rheumatology, Department of Internal Medicine, Chungnam National University Hospital, 282 Munhwaro, Daejeon, 35015, Republic of Korea.
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15
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Aly S, Lizano Santamaria R, Yoo SJ. P1488 Anomalous origin of left coronary artery from right pulmonary artery in association with scimitar syndrome. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.1194] [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: 11/12/2022] Open
Abstract
Abstract
Clinical Presentation
A full-term neonate was referred to our institution because of respiratory distress. CXR was significant for right lung hypoplasia and mild cardiomegaly. ECG showed normal sinus rhythm, right atrial enlargement, and right ventricular hypertrophy with no signs of ischemia.
Imaging Findings
The initial echocardiogram demonstrated PAPVD with the right upper pulmonary vein draining into IVC/RA junction with flow acceleration (mean gradient= 7 mmHg), moderate ASD, small muscular VSD with left-right shunting, moderate PDA with bidirectional shunting. Forward flow was seen in the proximal part of left main coronary artery (LMCA). RV systolic pressure was supra-systemic with a qualitatively moderately reduced RV systolic function.
The patient was taken to the catheterization lab where MPA angiography revealed an antegrade flow from the RPA into LMCA supplying both the anterior descending and the circumflex arteries. A selective injection within the scimitar vein showed drainage of the right lung into a vertical vein connecting with stenosis to IVC.
A follow up echocardiogram to re-examine the coronary origin revealed an anomalous origin of LMCA from proximal RPA; 3 mm distal to branch pulmonary artery bifurcation with mainly antegrade low velocity flow into LMCA and LAD. (Image 1)
Role of Imaging in Patient Care
- Imaging of the coronary origin in patients with ALCAPA can be challenging especially if the LMCA originates from RPA. Also, the presence of pulmonary hypertension might contribute to maintain coronary perfusion and lead to misinterpretation of the antegrade flow in LMCA and its branches.
- In certain situations, cardiac catheterization is essential to make the diagnosis of ALCAPA which prevented a potentially catastrophic outcome. Catheter intervention with a series of balloon dilations of the stenotic scimitar vein was successful in relieving the stenosis.
Summary/Discussion Points:
- Extensive review of the available literature revealed only three cases of Scimitar syndrome associated with ALCAPA. In all of these cases, the LMCA originated from the posterior sinus of MPA. Our case is the first to report ALCAPA from RPA in association with Scimitar syndrome. This presentation might have led to the initial misinterpretation of the echocardiography images.
- The presence of pulmonary hypertension in our patient maintained an adequate antegrade flow across the LMCA preventing significant coronary steal and signs of myocardial ischemia.
- The report highlights the challenges in making the diagnosis of ALCAPA with echocardiograms. Moreover, we discuss the role of cross-sectional and invasive imaging to rule out potential coronary arteries anomalies in patients with Scimitar syndrome, as this a rare although a very significant association that may have important implications in their outcomes.
Abstract P1488 Figure. ALCAPA origin from RPA
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Affiliation(s)
- S Aly
- Hospital for Sick Children, Toronto, Canada
| | | | - S J Yoo
- Hospital for Sick Children, Toronto, Canada
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16
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Affiliation(s)
- Chan Keol Park
- Division of Rheumatology, Department of Internal Medicine, Chungnam National University Hospital, Daejeon, Korea
| | - Su-Jin Yoo
- Division of Rheumatology, Department of Internal Medicine, Chungnam National University Hospital, Daejeon, Korea
| | - In Seol Yoo
- Division of Rheumatology, Department of Internal Medicine, Chungnam National University Hospital, Daejeon, Korea
| | - Jinhyun Kim
- Division of Rheumatology, Department of Internal Medicine, Chungnam National University Hospital, Daejeon, Korea
| | - Seung Cheol Shim
- Division of Rheumatology, Department of Internal Medicine, Chungnam National University Hospital, Daejeon, Korea
| | - Seong Wook Kang
- Division of Rheumatology, Department of Internal Medicine, Chungnam National University Hospital, Daejeon, Korea
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17
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Park JW, Ahn GY, Kim JW, Park ES, Kang JH, Chang SH, Choi IA, Yoo SJ, Park JK, Shin K, Park YB, Jun JB, Czirják L, Allanore Y, Matucci-Cerinic M, Lee EB. Impact of EUSTAR standardized training on accuracy of modified Rodnan skin score in patients with systemic sclerosis. Int J Rheum Dis 2018; 22:96-102. [PMID: 30398033 DOI: 10.1111/1756-185x.13433] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 10/09/2018] [Accepted: 10/11/2018] [Indexed: 11/28/2022]
Abstract
OBJECTIVES To investigate the impact of European Scleroderma Trials and Research (EUSTAR) standardized training on the accuracy of modified Rodnan skin score (mRSS) in patients with systemic sclerosis (SSc). METHODS Eight SSc patients (four diffuse, four limited) and 10 physicians (4 fellows, 6 professors) were included. Gold-standard mRSS was performed by a senior instructor. Training comprised a video presentation and a live demonstration. Each physician performed mRSS with no clinical information in all patients: (a) before training; (b) after video session; and (c) after live demonstration. Primary outcome was the change in scoring accuracy, which was defined as the difference from the gold-standard skin score, as analyzed using a linear mixed model. RESULTS Mean (standard deviation) difference from the gold-standard score in all measurements by participants before the training was 7.7 (9.5). Completion of training significantly enhanced mRSS accuracy (adjusted β = -7.61; 95% CI: -11.91 to -3.32). This was largely attributable to the video presentation (adjusted β = -5.47; -9.16 to -1.78), although the live demonstration was associated with numerical reduction in the difference from the gold-standard score (adjusted β = -2.15; -5.84 to 1.55). Effect of training was prominent in fellows whereas professors showed an increase in the difference from gold-standard score after training (P value for interaction <0.001). The intraclass correlation coefficient for physician skin scores was acceptable. However, no significant change was observed after training. CONCLUSION New EUSTAR standardized mRSS training significantly enhanced mRSS accuracy, especially in participant with less previous experience in skin scoring.
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Affiliation(s)
- Jun Won Park
- Division of Rheumatology, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Ga Young Ahn
- Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul, Korea
| | - Ji-Won Kim
- Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - Eun Seong Park
- Division of Rheumatology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Ji-Hyoun Kang
- Division of Rheumatology, Department of Internal Medicine, Chonnam National University Medical School & Hospital, Gwangju, Korea
| | - Sung Hae Chang
- Division of Rheumatology, Department of Internal Medicine, Soonchunhyang University Cheonan Hospital, Cheonan, Korea
| | - In Ah Choi
- Division of Rheumatology, Department of Internal Medicine, Chungbuk National University Hospital, Chungbuk National University College of Medicine, Cheongju, Korea
| | - Su-Jin Yoo
- Division of Rheumatology, Department of Internal Medicine, School of Medicine, Chungnam National University, Chungnam National University Hospital, Daejeon, Korea
| | - Jin Kyun Park
- Division of Rheumatology, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Kichul Shin
- Division of Rheumatology, Department of Internal Medicine, SNU Boramae Medical Center, Seoul, Korea
| | - Yong-Beom Park
- Division of Rheumatology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Jae-Bum Jun
- Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul, Korea
| | - László Czirják
- Department of Rheumatology and Immunology, University of Pecs, Pecs, Hungary
| | - Yannick Allanore
- Department of Rheumatology A, Descartes University, APHP, Cochin Hospital, Paris, France
| | - Marco Matucci-Cerinic
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy.,Department of Geriatric Medicine, Division of Rheumatology, AOUC, Florence, Italy
| | - Eun Bong Lee
- Division of Rheumatology, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
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18
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Kim Y, Song KS, Sohn EH, Kang SW, Yoo IS, Shim SC, Yoo SJ, Kim J. Anti-TIF1γ antibody and the expression of TIF1γ in idiopathic inflammatory myopathies. Int J Rheum Dis 2018; 22:314-320. [DOI: 10.1111/1756-185x.13424] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 07/26/2018] [Accepted: 09/28/2018] [Indexed: 12/31/2022]
Affiliation(s)
- Young Kim
- Department of Internal Medicine; Daejeon Veterans Hospital; Daejeon Korea
| | - Kyu Sang Song
- Department of Pathology; Chungnam National University College of Medicine; Daejeon Korea
| | - Eun Hee Sohn
- Department of Neurology; Chungnam National University College of Medicine; Daejeon Korea
| | - Seong Wook Kang
- Department of Internal Medicine; Chungnam National University College of Medicine; Daejeon Korea
| | - In Seol Yoo
- Department of Internal Medicine; Chungnam National University College of Medicine; Daejeon Korea
| | - Seung-Cheol Shim
- Department of Internal Medicine; Chungnam National University College of Medicine; Daejeon Korea
| | - Su-Jin Yoo
- Department of Internal Medicine; Chungnam National University College of Medicine; Daejeon Korea
| | - Jinhyun Kim
- Department of Internal Medicine; Chungnam National University College of Medicine; Daejeon Korea
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19
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Moon KW, Lee SS, Lee YJ, Jun JB, Yoo SJ, Ju JH, Chang SH, Choi IA, Kang TY, Lee EB, Lee SG. Clinical and Laboratory Characteristics and Mortality in Korean Patients with Systemic Sclerosis: A Nationwide Multicenter Retrospective Cohort Study. J Rheumatol 2018; 45:1281-1288. [DOI: 10.3899/jrheum.171443] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/26/2018] [Indexed: 01/22/2023]
Abstract
Objective.We aimed to investigate demographic and clinical features and predictors of mortality in Korean patients with systemic sclerosis (SSc).Methods.We performed a retrospective multicenter medical chart review in Korean patients diagnosed with SSc from 1986 to 2016 at 11 university hospitals representing each geographic area of Korea. SSc patients were defined according to the American College of Rheumatology preliminary classification criteria and subtyped as limited cutaneous (lcSSc) or diffuse cutaneous (dcSSc) SSc.Results.We enrolled 751 patients (female, 86.7%; mean age at diagnosis, 48.9 yrs). The most common organ involvement was interstitial lung disease (52.7%), followed by gastroesophageal reflux disease (32.9%) and pulmonary arterial hypertension (13.6%). Patients with lcSSc were more common than those with dcSSc (64.8 vs 35.2%), whereas anti-Scl-70 and anticentromere antibody positivity were identified in 302 (42.5%) and 175 (25.5%) patients, respectively. In the 46 (6.1%) patients who developed a malignancy, lung cancer (23.9%) was the most common diagnosis, followed by gastric (13%) and breast cancer (13%). During the study period, 57 (7.6%) patients died, and the 5- and 10-year survival rates were 94% and 87%, respectively. Increased age at diagnosis, cardiovascular involvement, and anti-Scl-70 antibody positivity were significant predictors of death.Conclusion.Clinical manifestations and survival rates in Korean SSc patients are similar to those of other populations. However, the prevalence of anti-Scl-70 antibody is higher in Korean SSc patients compared with whites, while the prevalence of anticentromere antibody is lower.
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Sun BJ, Park JH, Yoo SJ, Park Y, Kim YJ, Lee IS, Kim J, Yoo IS, Shim SC, Kang SW, Kim JH, Lee JH, Choi SW, Jeong JO, Seong IW. Intrinsic changes of left ventricular function in patients with Behçet disease and comparison according to systemic disease activity. Echocardiography 2018; 35:809-816. [DOI: 10.1111/echo.13844] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Affiliation(s)
- Byung Joo Sun
- Division of Cardiology; Department of Internal Medicine; School of Medicine; Chungnam National University; Chungnam National University Hospital; Daejeon Korea
| | - Jae-Hyeong Park
- Division of Cardiology; Department of Internal Medicine; School of Medicine; Chungnam National University; Chungnam National University Hospital; Daejeon Korea
| | - Su-Jin Yoo
- Division of Rheumatology; Department of Internal Medicine; School of Medicine; Chungnam National University; Chungnam National University Hospital; Daejeon Korea
| | - Yunseon Park
- Cardiac Imaging Laboratory; Chungnam National University Hospital; Daejeon Korea
| | - Yeon Ju Kim
- Cardiac Imaging Laboratory; Chungnam National University Hospital; Daejeon Korea
| | - In Suk Lee
- Cardiac Imaging Laboratory; 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
| | - In Seol Yoo
- Division of Rheumatology; Department of Internal Medicine; School of Medicine; Chungnam National University; Chungnam National University Hospital; Daejeon 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
| | - Jun-Hyung Kim
- Division of Cardiology; Department of Internal Medicine; School of Medicine; Chungnam National University; Chungnam National University Hospital; Daejeon Korea
| | - Jae-Hwan Lee
- Division of Cardiology; Department of Internal Medicine; School of Medicine; Chungnam National University; Chungnam National University Hospital; Daejeon Korea
| | - Si Wan Choi
- Division of Cardiology; Department of Internal Medicine; School of Medicine; Chungnam National University; Chungnam National University Hospital; Daejeon Korea
| | - Jin-Ok Jeong
- Division of Cardiology; Department of Internal Medicine; School of Medicine; Chungnam National University; Chungnam National University Hospital; Daejeon Korea
| | - In-Whan Seong
- Division of Cardiology; Department of Internal Medicine; School of Medicine; Chungnam National University; Chungnam National University Hospital; Daejeon Korea
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Yoo SJ, Kwon T, Kang K, Kim H, Kang SC, Richt JA, Lyoo YS. Genetic evolution of classical swine fever virus under immune environments conditioned by genotype 1-based modified live virus vaccine. Transbound Emerg Dis 2018; 65:735-745. [PMID: 29319233 DOI: 10.1111/tbed.12798] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Indexed: 12/26/2022]
Abstract
Modified live vaccines (MLVs) based on genotype 1 strains, particularly C-strain, have been used to prevent and control classical swine fever virus (CSFV) worldwide. Nevertheless, a shift in the predominant CSFV strains circulating in the field from genotype 1 or 3 to genotype 2 is seen. Genotype 2 is genetically distant from the vaccine strains and was recently reported during outbreaks after vaccine failure; this has raised concerns that vaccination has influenced viral evolution. In Korea in 2016, there was an unexpected CSF outbreak in a MLV-vaccinated commercial pig herd. The causative CSFV strain was genetically distinct from previously isolated Korean strains but similar to recent Chinese strains exhibiting enhanced capacity to escape neutralization; this suggests the need for global cooperative research on the evolution of CSFV. We analysed global E2 sequences, using bioinformatics tools, revealing the evolutionary pathways of CSFV. Classical swine fever virus genotypes 1 and 2 experienced different degrees and patterns of evolutionary growth. Whereas genotype 1 stayed relatively conserved over time, the genetic diversity of genotype 2 has progressively expanded, with few fluctuations. It was determined that genotype 2 evolved under lower immune pressures and at a higher evolutionary rate than genotype 1. Further, several selected codons, under diversifying selection in genotype 1 but under purifying selection in genotype 2, correspond to antigenic determinants, which could lead to evasion of vaccine-induced immunity. Our findings provide evidence that evolutionary changes in CSFV are the result of the disproportionate usage of the CSF MLVs in endemic areas; this underscores the need to develop mitigation strategies to minimize the substantial risk associated with the emergence of vaccine-escaping mutants.
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Affiliation(s)
- S J Yoo
- College of Veterinary Medicine, Konkuk University, Gwangjin-gu, Seoul, South Korea
| | - T Kwon
- College of Veterinary Medicine, Konkuk University, Gwangjin-gu, Seoul, South Korea
| | - K Kang
- Sooje Animal Hospital, Dongducheon-si, Gyeonggi-do, Korea
| | - H Kim
- Optipharm Inc., Cheongju-si, Chungcheongbuk-do, Korea
| | - S C Kang
- Optipharm Inc., Cheongju-si, Chungcheongbuk-do, Korea
| | - J A Richt
- Department of Diagnostic Medicine/Pathobiology, Center of Excellence for Emerging and Zoonotic Animal Diseases, Kansas State University, Manhattan, KS, USA
| | - Y S Lyoo
- College of Veterinary Medicine, Konkuk University, Gwangjin-gu, Seoul, South Korea
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Kim M, Yoo SJ, Kang SW, Kwon J, Choi I, Lee CH. TNFα and IL-1β in the synovial fluid facilitate mucosal-associated invariant T (MAIT) cell migration. Cytokine 2017; 99:91-98. [DOI: 10.1016/j.cyto.2017.07.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Revised: 07/05/2017] [Accepted: 07/12/2017] [Indexed: 12/17/2022]
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Lee DU, Je SH, Yoo SJ, Kwon T, Shin JY, Byun JJ, Park JH, Jeong KW, Ku JM, Lyoo YS. Hematological adverse effects and pharmacokinetics of ribavirin in pigs following intramuscular administration. J Vet Pharmacol Ther 2017; 40:561-568. [PMID: 28205288 DOI: 10.1111/jvp.12394] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Accepted: 12/14/2016] [Indexed: 11/28/2022]
Abstract
Ribavirin (RBV) is a synthetic guanosine analog that is used as a drug against various viral diseases in humans. The in vitro antiviral effects of ribavirin against porcine viruses were demonstrated in several studies. The purposes of this study were to evaluate the adverse effects and pharmacokinetics of ribavirin following its intramuscular (IM) injection in pigs. Ribavirin was formulated as a double-oil emulsion (RBV-DOE) and gel (RBV-Gel), which were injected into the pigs as single-dose IM injections. After injection of RBV, all of the pigs were monitored. The collected serum and whole blood samples were analyzed by liquid chromatography-tandem mass spectrometry and complete blood count analysis, respectively. All of the ribavirin-treated pigs showed significant decreases in body weight compared to the control groups. Severe clinical signs including dyspnea, anorexia, weakness, and depression were present in ribavirin-treated pigs until 5 days postinjection (dpi). The ribavirin-treated groups showed significant decrease in the number of red blood cells and hemoglobin concentration until 8 dpi. The mean half-life of the RBV-DOE and RBV-Gel was 27.949 ± 2.783 h and 37.374 ± 3.502 h, respectively. The mean peak serum concentration (Cmax ) and area under the serum concentration-time curve from time zero to infinity (AUCinf ) of RBV-DOE were 8340.000 ± 2562.577 ng/mL and 16 0095.430 ± 61 253.400 h·ng/mL, respectively. The Cmax and AUCinf of RBV-Gel were 15 300.000 ± 3764.306 ng/mL and 207526.260 ± 63656.390 h·ng/mL, respectively. The results of this study provided the index of side effect and pharmacokinetics of ribavirin in pigs, which should be considered before clinical application.
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Affiliation(s)
- D-U Lee
- Department of Immunopathology, College of Veterinary Medicine, Konkuk University, Seoul, South Korea
| | - S H Je
- Department of Immunopathology, College of Veterinary Medicine, Konkuk University, Seoul, South Korea
| | - S J Yoo
- Department of Immunopathology, College of Veterinary Medicine, Konkuk University, Seoul, South Korea
| | - T Kwon
- Department of Immunopathology, College of Veterinary Medicine, Konkuk University, Seoul, South Korea
| | - J Y Shin
- Department of Immunopathology, College of Veterinary Medicine, Konkuk University, Seoul, South Korea
| | - J J Byun
- Department of Immunopathology, College of Veterinary Medicine, Konkuk University, Seoul, South Korea
| | - J-H Park
- Center for FMD Vaccine Research, Animal and Plant Quarantine Agency, Gimcheon-si, South Korea
| | - K-W Jeong
- Bio-Center, Gyeonggi Institute of Science and Technology Promotion, Suwon-si, South Korea
| | - J-M Ku
- Bio-Center, Gyeonggi Institute of Science and Technology Promotion, Suwon-si, South Korea
| | - Y S Lyoo
- Department of Immunopathology, College of Veterinary Medicine, Konkuk University, Seoul, South Korea
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Yoo SJ, Park JH, Park Y, Lee JH, Sun BJ, Kim J, Yoo IS, Shim SC, Kang SW. Prevalence of Pulmonary Arterial Hypertension in Korean Adult Patients with Systemic Sclerosis: Result of a Pilot Echocardiographic Screening Study. J Cardiovasc Ultrasound 2016; 24:312-316. [PMID: 28090259 PMCID: PMC5234342 DOI: 10.4250/jcu.2016.24.4.312] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Revised: 11/29/2016] [Accepted: 11/30/2016] [Indexed: 11/22/2022] Open
Abstract
Background Pulmonary arterial hypertension (PAH) is a major cause of morbidity and mortality among patients with systemic sclerosis (SSc). Early detection and prompt treatment of PAH associated with SSc (SSc-PAH) result in better prognosis. We conducted echocardiographic study to presume the prevalence of PAH in Korean adult SSc patients and to diagnose SSc-PAH in their early stages with right heart catheterization (RHC). Methods We performed free of charge echocardiographic study including 37 adult SSc patients at the Chungnam National University Hospital. The possibility of PAH is determined by the estimation of pulmonary arterial pressure by peak tricuspid regurgitation velocity of > 3.0 m/s. Patients with possible PAH were recommended to undergo RHC to confirm the diagnosis. Results In 37 patients, 8 patients were suspected with PAH. Among them, 6 patients agreed to be examined with RHC, and 4 were confirmed with PAH. The prevalence of possible PAH was 21.6% (8 of 37 patients), and that of confirmed PAH was 10.8% (4 of 37 patients). Four patients who were confirmed with SSc-PAH through RHC have been treated with specific pulmonary vasodilators and maintained stable. Conclusion Eight patients (21.6%) were possible PAH and 4 (10.8%) were diagnosed as SSc-PAH by RHC after the echocardiographic screening study of 37 adult SSc patients.
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Affiliation(s)
- Su-Jin Yoo
- Division of Rheumatology, Department of Internal Medicine, School of Medicine, Chungnam National University, Chungnam National University Hospital, Daejeon, Korea
| | - Jae-Hyeong Park
- Division of Cardiology, Department of Internal Medicine, School of Medicine, Chungnam National University, Chungnam National University Hospital, Daejeon, Korea
| | - Yunseon Park
- Division of Cardiology, Department of Internal Medicine, School of Medicine, Chungnam National University, Chungnam National University Hospital, Daejeon, Korea
| | - Jae-Hwan Lee
- Division of Cardiology, Department of Internal Medicine, School of Medicine, Chungnam National University, Chungnam National University Hospital, Daejeon, Korea
| | - Byung-Joo Sun
- Division of Cardiology, 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
| | - In Seol Yoo
- Division of Rheumatology, Department of Internal Medicine, School of Medicine, Chungnam National University, Chungnam National University Hospital, Daejeon, 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
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Yoon BR, Chung YH, Yoo SJ, Kawara K, Kim J, Yoo IS, Park CG, Kang SW, Lee WW. Preferential Induction of the T Cell Auxiliary Signaling Molecule B7-H3 on Synovial Monocytes in Rheumatoid Arthritis. J Biol Chem 2016; 291:4048-57. [PMID: 26702052 PMCID: PMC4759181 DOI: 10.1074/jbc.m115.680298] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Revised: 11/24/2015] [Indexed: 12/29/2022] Open
Abstract
B7-H3, a newly identified B7 family member, has functional duality as a co-stimulator and co-inhibitor that fine-tunes T cell-mediated immune responses. Given that B7-H3 expression on human monocytes and dendritic cells is enhanced by inflammatory cytokines, its potential inmmunoregulatory role at sites of inflammation has been suggested. Further, monocytes play crucial roles in the pathophysiology of various inflammatory disorders including autoimmune diseases; however, the immunological role of B7-H3 in rheumatoid arthritis (RA) has not been defined. Thus, we aimed to investigate the possible roles of monocyte B7-H3 in the pathogenesis of RA. Synovial monocytes, but not peripheral monocytes, in RA patients predominantly express surface B7-H3. The 4Ig isoform of B7-H3 is exclusively induced on the cell surface, whereas the 2Ig B7-H3 isoform is constitutively expressed in the intracytoplasmic region of both peripheral and synovial monocytes. B7-H3 knockdown experiments reveal that surface B7-H3 has an inhibitory effect on IFN-γ production in CD4 memory cells. Moreover, surface B7-H3 expression on synovial monocytes inversely correlates with RA clinical parameters. Our findings demonstrate that activation-induced B7-H3 expression on synovial monocytes has the potential to inhibit Th1-mediated immune responses and immunomodulatory roles affecting RA pathogenesis.
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Affiliation(s)
- Bo Ruem Yoon
- From the Departments of Microbiology and Immunology and
| | - Yeon-Ho Chung
- From the Departments of Microbiology and Immunology and the BK21Plus Biomedical Science Project, and the Seoul National University College of Medicine, Seoul 110-799, South Korea
| | - Su-Jin Yoo
- the Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon 301-721, South Korea
| | - Kenji Kawara
- From the Departments of Microbiology and Immunology and the Tokyo Medical and Dental University School of Medicine, Tokyo 113-8510, Japan, and
| | - Jinhyun Kim
- the Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon 301-721, South Korea
| | - In Seol Yoo
- the Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon 301-721, South Korea
| | - Chung-Gyu Park
- From the Departments of Microbiology and Immunology and Biomedical Sciences and
| | - Seong Wook Kang
- the Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon 301-721, South Korea,
| | - Won-Woo Lee
- From the Departments of Microbiology and Immunology and the BK21Plus Biomedical Science Project, and the Seoul National University College of Medicine, Seoul 110-799, South Korea, Biomedical Sciences and the Cancer Research Institute, Ischemic/Hypoxic Disease Institute, and Institute of Infectious Diseases, Seoul National University College of Medicine, Seoul National University Hospital Biomedical Research Institute, Seoul 110-799, South Korea
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Affiliation(s)
- Su-Jin Yoo
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Korea
| | - Eunbyeol Go
- Department of Medical Education, Chungnam National University School of Medicine, Daejeon, Korea
| | - Ye-Eun Kim
- Department of Medical Education, Chungnam National University School of Medicine, Daejeon, Korea
| | - Sunyoung Lee
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Korea
| | - Jaeyul Kwon
- Department of Medical Education, Chungnam National University School of Medicine, Daejeon, Korea
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Seo JW, Yoo SJ, Ho SY, Lee HJ, Anderson RH. Further morphological observations on hearts with twisted atrioventricular connections (criss-cross hearts). Cardiovasc Pathol 2015; 1:211-7. [PMID: 25990279 DOI: 10.1016/1054-8807(92)90027-l] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/1991] [Accepted: 03/25/1992] [Indexed: 10/26/2022] Open
Abstract
A superior and anterior location of the tricuspid valve in the setting of malalignment between the atrial and ventricular septal structures was the characteristic unifying morphologic feature of seven autopsied hearts with twisted atrioventricular connections. The peculiar angiocardiographic appearances of this lesion could be readily explained by the findings of unusual recesses in the right atrium, in the right ventricle, and in the left ventricle. The recess in the morphologically left ventricle was seen in each case at the right posterior part (or, in the hearts with left-handed ventricles, at the left part) of the chamber. Displacement of the right-sided atrioventricular valve far from the inferior caval vein (vena cava) had produced the recess in the morphologically right atrium; this feature was most prominent in the heart in which the atrioventricular connections were discordant. The recess within the right ventricular outflow tract was seen in four hearts, in all of which the inlet and apical trabecular components of the right ventricle were hypoplastic.
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Affiliation(s)
- J W Seo
- From the Department of Paediatrics, The National Heart and Lung Institute, London, United Kingdom
| | - S J Yoo
- Department of Diagnostic Radiology, University of Ulsan-Asan Medical Center, Seoul, Korea
| | - S Y Ho
- From the Department of Paediatrics, The National Heart and Lung Institute, London, United Kingdom
| | - H J Lee
- Department of Pediatrics, Sejong Heart Institute, Pucheonshi, Korea
| | - R H Anderson
- From the Department of Paediatrics, The National Heart and Lung Institute, London, United Kingdom
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28
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Yoon BR, Chung YH, Kim DH, Kim B, Yoo SJ, Chung DH, Kang SW, Lee WW. A novel B7 family member, B7-H3 is preferentially expressed on the cell surface of synovial monocytes in rheumatoid arthritis (RA) (BA7P.153). The Journal of Immunology 2015. [DOI: 10.4049/jimmunol.194.supp.115.13] [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] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Abstract
B7-H3, a newly identified B7 family member, has functional duality as a T-cell costimulator and coinhibitor that fine-tunes T-cell mediated immune responses. Given that B7-H3 expression on human monocytes and dendritic cells is enhanced by inflammatory cytokines, its potential inmmunoregulatory role at sites of inflammation has been suggested. Monocytes also play crucial roles in the pathophysiology of various autoimmune diseases. However, the immunological role of B7-H3 in RA has not been defined. We aimed to investigate the possible roles of monocyte B7-H3 in the pathogenesis of RA. Synovial monocytes, but not peripheral monocytes, in RA patients predominantly express surface B7-H3. The 4Ig isoform of B7-H3 is exclusively induced on the cell surface, whereas the 2Ig B7-H3 isoform is constitutively expressed in the intracytoplasmic region of both peripheral and synovial monocytes. B7-H3 knockdown experiments provide evidence that surface B7-H3 has an inhibitory effect on IFN-γ production in CD4 memory cells. Moreover, the expression level of 4Ig B7-H3 on synovial monocytes inversely correlates with clinical parameters such as CRP levels, ESR, and DAS28. Our findings demonstrate that activation-induced B7-H3 expression on synovial monocytes has the potential to inhibit Th1-mediated immune responses and immunomodulatory roles thereby affecting the pathogenesis of RA.
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Affiliation(s)
- Bo Ruem Yoon
- 1Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul, Korea (the Republic of)
| | - Yeon-Ho Chung
- 2Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea (the Republic of)
| | - Dong Hyun Kim
- 2Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea (the Republic of)
| | - Bonah Kim
- 2Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea (the Republic of)
| | - Su-Jin Yoo
- 3Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Korea (the Republic of)
| | - Doo Hyun Chung
- 4Department of Pathology and Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea (the Republic of)
| | - Seong Wook Kang
- 3Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Korea (the Republic of)
| | - Won-Woo Lee
- 1Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul, Korea (the Republic of)
- 2Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea (the Republic of)
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Kim SJ, Ho Hur J, Park C, Kim HJ, Oh GS, Lee JN, Yoo SJ, Choe SK, So HS, Lim DJ, Moon SK, Park R. Bucillamine prevents cisplatin-induced ototoxicity through induction of glutathione and antioxidant genes. Exp Mol Med 2015; 47:e142. [PMID: 25697147 PMCID: PMC4346486 DOI: 10.1038/emm.2014.112] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Revised: 11/10/2014] [Accepted: 11/14/2014] [Indexed: 11/09/2022] Open
Abstract
Bucillamine is used for the treatment of rheumatoid arthritis. This study investigated the protective effects of bucillamine against cisplatin-induced damage in auditory cells, the organ of Corti from postnatal rats (P2) and adult Balb/C mice. Cisplatin increases the catalytic activity of caspase-3 and caspase-8 proteases and the production of free radicals, which were significantly suppressed by pretreatment with bucillamine. Bucillamine induces the intranuclear translocation of Nrf2 and thereby increases the expression of γ-glutamylcysteine synthetase (γ-GCS) and glutathione synthetase (GSS), which further induces intracellular antioxidant glutathione (GSH), heme oxygenase 1 (HO-1) and superoxide dismutase 2 (SOD2). However, knockdown studies of HO-1 and SOD2 suggest that the protective effect of bucillamine against cisplatin is independent of the enzymatic activity of HO-1 and SOD. Furthermore, pretreatment with bucillamine protects sensory hair cells on organ of Corti explants from cisplatin-induced cytotoxicity concomitantly with inhibition of caspase-3 activation. The auditory-brainstem-evoked response of cisplatin-injected mice shows marked increases in hearing threshold shifts, which was markedly suppressed by pretreatment with bucillamine in vivo. Taken together, bucillamine protects sensory hair cells from cisplatin through a scavenging effect on itself, as well as the induction of intracellular GSH.
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Affiliation(s)
- Se-Jin Kim
- Department of Microbiology, Center for Metabolic Function Regulation (CMFR), Wonkwang University College of Medicine, Iksan, Jeonbuk, Korea
| | - Joon Ho Hur
- Emergency medicine, Wonkwang University, College of Medicine, Iksan, Jeonbuk, Korea
| | - Channy Park
- Department of Head & Neck Surgery, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | - Hyung-Jin Kim
- Department of Microbiology, Center for Metabolic Function Regulation (CMFR), Wonkwang University College of Medicine, Iksan, Jeonbuk, Korea
| | - Gi-Su Oh
- Department of Microbiology, Center for Metabolic Function Regulation (CMFR), Wonkwang University College of Medicine, Iksan, Jeonbuk, Korea
| | - Joon No Lee
- Department of Microbiology, Center for Metabolic Function Regulation (CMFR), Wonkwang University College of Medicine, Iksan, Jeonbuk, Korea
| | - Su-Jin Yoo
- Emergency medicine, Wonkwang University, College of Medicine, Iksan, Jeonbuk, Korea
| | - Seong-Kyu Choe
- Department of Microbiology, Center for Metabolic Function Regulation (CMFR), Wonkwang University College of Medicine, Iksan, Jeonbuk, Korea
| | - Hong-Seob So
- 1] Department of Microbiology, Center for Metabolic Function Regulation (CMFR), Wonkwang University College of Medicine, Iksan, Jeonbuk, Korea [2] BK21Plus Program & Department of Smart Life-Care Convergence, Wonkwang University College of Medicine, Iksan, Jeonbuk, Korea
| | - David J Lim
- Department of Head & Neck Surgery, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | - Sung K Moon
- Department of Head & Neck Surgery, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA, USA
| | - Raekil Park
- 1] Department of Microbiology, Center for Metabolic Function Regulation (CMFR), Wonkwang University College of Medicine, Iksan, Jeonbuk, Korea [2] BK21Plus Program & Department of Smart Life-Care Convergence, Wonkwang University College of Medicine, Iksan, Jeonbuk, Korea
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Yoo SJ, Lee JC, Kim Y, Yoo IS, Shim SC, Kim KH, Kang SW. Clinical Implication of 18F-FDG-PET in Diagnosing and Monitoring Disease Activity in a Case of Subclinical Stage of Giant Cell Arteritis. J Rheum Dis 2015. [DOI: 10.4078/jrd.2015.22.6.382] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Su-Jin Yoo
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Korea
| | - Jeong Chan Lee
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Korea
| | - Young Kim
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Korea
| | - In Seol Yoo
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Korea
| | - Seung Cheol Shim
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Korea
| | - Kun-Ho Kim
- Department of Nuclear Medicine, Chungnam National University School of Medicine, Daejeon, Korea
| | - Seong Wook Kang
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Korea
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Yoon BR, Yoo SJ, Choi YH, Chung YH, Kim J, Yoo IS, Kang SW, Lee WW. Functional phenotype of synovial monocytes modulating inflammatory T-cell responses in rheumatoid arthritis (RA). PLoS One 2014; 9:e109775. [PMID: 25329467 PMCID: PMC4201467 DOI: 10.1371/journal.pone.0109775] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Accepted: 09/11/2014] [Indexed: 12/29/2022] Open
Abstract
Monocytes function as crucial innate effectors in the pathogenesis of chronic inflammatory diseases, including autoimmunity, as well as in the inflammatory response against infectious pathogens. Human monocytes are heterogeneous and can be classified into three distinct subsets based on CD14 and CD16 expression. Although accumulating evidence suggests distinct functions of monocyte subsets in inflammatory conditions, their pathogenic roles in autoimmune diseases remain unclear. Thus, we investigated the phenotypic and functional characteristics of monocytes derived from synovial fluid and peripheral blood in RA patients in order to explore the pathogenic roles of these cells. In RA patients, CD14+CD16+, but not CD14dimCD16+, monocytes are predominantly expanded in synovial fluid and, to a lesser degree, in peripheral blood. Expression of co-signaling molecules of the B7 family, specifically CD80 and CD276, was markedly elevated on synovial monocytes, while peripheral monocytes of RA and healthy controls did not express these molecules without stimulation. To explore how synovial monocytes might gain these unique properties in the inflammatory milieu of the synovial fluid, peripheral monocytes were exposed to various stimuli. CD16 expression on CD14+ monocytes was clearly induced by TGF-β, although co-treatment with IL-1β, TNF-α, or IL-6 did not result in any additive effects. In contrast, TLR stimulation with LPS or zymosan significantly downregulated CD16 expression such that the CD14+CD16+ monocyte subset could not be identified. Furthermore, treatment of monocytes with IFN-γ resulted in the induction of CD80 and HLA-DR expression even in the presence of TGF-β. An in vitro assay clearly showed that synovial monocytes possess the unique capability to promote Th1 as well as Th17 responses of autologous peripheral CD4 memory T cells. Our findings suggest that the cytokine milieu of the synovial fluid shapes the unique features of synovial monocytes as well as their cardinal role in shaping inflammatory T-cell responses in RA.
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Affiliation(s)
- Bo Ruem Yoon
- Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul, Korea
| | - Su-Jin Yoo
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejon, Korea
| | - Yeon ho Choi
- Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul, Korea
- Cancer Research Institute, Seoul National University, Seoul, Korea
| | - Yeon-Ho Chung
- Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul, Korea
| | - Jinhyun Kim
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejon, Korea
| | - In Seol Yoo
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejon, Korea
| | - Seong Wook Kang
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejon, Korea
- * E-mail: (WWL); (SWK)
| | - Won-Woo Lee
- Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul, Korea
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea
- Cancer Research Institute, Seoul National University, Seoul, Korea
- Ischemic/Hypoxic Disease Institute, and Institute of Infectious Diseases, Seoul National University College of Medicine, Seoul, Korea
- * E-mail: (WWL); (SWK)
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Kim EJ, Kwon HJ, Ha M, Lim MH, Oh SY, Kim JH, Yoo SJ, Paik KC. Relationship among attention-deficit hyperactivity disorder, dietary behaviours and obesity. Child Care Health Dev 2014; 40:698-705. [PMID: 24438547 DOI: 10.1111/cch.12129] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/08/2013] [Indexed: 11/27/2022]
Abstract
BACKGROUND Attention-deficit hyperactivity disorder (ADHD) is one of the most common psychiatric disorders of childhood and can be associated with obesity. The aim of this study was to reveal the connection between ADHD symptoms, food habits and obesity. METHODS We examined 12 350 children (6010 boys, 6340 girls) from 27 elementary schools in Cheonan, the Republic of Korea. The study subjects were 5- to 13-year-old children (9.4 ± 1.7 years). Parents completed the DuPaul ADHD Rating Scale. Food habits were measured by a questionnaire adapted from the Korea Youth Risk Behavior Web-based Survey and a validated mini-dietary assessment tool. The full set of hypothesized associations was tested using covariance structural modelling. RESULTS The prevalence of ADHD was 7.6% and that of obesity was 4.5% in our study population. The data was well fit by the model. ADHD was associated with body mass index (BMI; standardized β = 0.086, P < 0.001). Bulimic dietary behaviours was related to BMI (standardized β = 0.548, P < 0.001). Socio-economic status was associated with BMI (standardized β = -0.017, P = 0.027). CONCLUSION Our analysis suggested that ADHD was a risk factor for obesity through dietary behavioural change and socio-economic status.
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Affiliation(s)
- E J Kim
- The Environmental Health Center (Neurodevelopment), Dankook University Medical Center, Cheonan, Korea
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Kim IS, Lee B, Yoo SJ, Hwang SJ. Whole Body Vibration Reduces Inflammatory Bone Loss in a Lipopolysaccharide Murine Model. J Dent Res 2014; 93:704-10. [PMID: 24810275 DOI: 10.1177/0022034514534856] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2013] [Accepted: 04/16/2014] [Indexed: 11/16/2022] Open
Abstract
Whole body vibration (WBV) stimulation has a beneficial effect on the recovery of osteoporotic bone. We aimed to investigate the immediate effect of WBV on lipopolysaccharide (LPS)-mediated inflammatory bone loss by varying the exposure timing. Balb/C mice were divided into the following groups: control, LPS (L), and LPS with vibration (LV). The L and LV groups received LPS (5 mg/kg) by 2 intraperitoneal injections on days 0 and 4. The LV group was exposed to WBV (0.4 g, 45 Hz) either during LPS treatment (LV1) or after cessation of LPS injection (LV2) and then continued WBV treatment for 10 min/d for 3 d. Evaluation based on micro-computed tomography was performed 7 d after the first injection, when the L group showed a significant decrease in bone volume (-25.8%) and bone mineral density (-33.5%) compared with the control group. The LV2 group recovered bone volume (35%) and bone mineral density (19.9%) compared with the L group, whereas the LV1 group showed no improvement. This vibratory signal showed a suppressive effect on the LPS-mediated induction of inflammatory cytokines such as IL-1β or TNF-α in human mesenchymal stem cells in vitro. These findings suggest that immediate exposure to WBV after the conclusion of LPS treatment efficiently reduces trabecular bone loss, but WBV might be less effective during the course of treatment with inflammatory factor.
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Affiliation(s)
- I S Kim
- Dental Research Institute, Seoul National University, Seoul, Republic of Korea
| | - B Lee
- Dental Research Institute, Seoul National University, Seoul, Republic of Korea
| | - S J Yoo
- Dental Research Institute, Seoul National University, Seoul, Republic of Korea
| | - S J Hwang
- Dental Research Institute, Seoul National University, Seoul, Republic of Korea Department of Oral and Maxillofacial Surgery, School of Dentistry, Seoul National University, Seoul, Republic of Korea
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You HJ, Jang SO, Choo WI, Jung YH, Lho TH, Yoo SJ. Development status of the 18 GHz superconducting electron cyclotron resonance ion source at National Fusion Research Institute. Rev Sci Instrum 2014; 85:02A916. [PMID: 24593495 DOI: 10.1063/1.4827307] [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] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A new superconducting 18 GHz electron cyclotron resonance ion source is being developed at the National Fusion Research Institute in South Korea. This source will be dedicated for future application of highly charged ions in the area of matter interaction, diagnostic imaging, and probing. In this paper, we describe the status of the source development consisting of a double electrode biased disk, sputtering systems for metal ion production, diagnostic ports for the extraction region, a variable gap extraction-Einzel lens system, and a low energy beam transport system.
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Affiliation(s)
- H J You
- Plasma Technology Research Center, National Fusion Research Institute, Gunsan, South Korea
| | - S O Jang
- Plasma Technology Research Center, National Fusion Research Institute, Gunsan, South Korea
| | - W I Choo
- Plasma Technology Research Center, National Fusion Research Institute, Gunsan, South Korea
| | - Y H Jung
- Plasma Technology Research Center, National Fusion Research Institute, Gunsan, South Korea
| | - T H Lho
- Plasma Technology Research Center, National Fusion Research Institute, Gunsan, South Korea
| | - S J Yoo
- Plasma Technology Research Center, National Fusion Research Institute, Gunsan, South Korea
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Wertaschnigg D, Jaeggi M, Chitayat D, Shannon P, Ryan G, Thompson M, Yoo SJ, Jaeggi E. Prenatal diagnosis and outcome of absent pulmonary valve syndrome: contemporary single-center experience and review of the literature. Ultrasound Obstet Gynecol 2013; 41:162-167. [PMID: 22605612 DOI: 10.1002/uog.11193] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 05/03/2012] [Indexed: 05/31/2023]
Abstract
OBJECTIVE To review the anomaly spectrum of prenatally detected absent pulmonary valve syndrome (APVS) and the outcome after diagnosis. Previous fetal studies reported survival rates of ≤ 25% for patients with intended postnatal care. METHODS Clinical data and echocardiograms of 12 cases with a fetal diagnosis of APVS between 2000 and 2010 were analyzed in this retrospective single-center study. Collected parameters included: gestational age at referral, associated fetal abnormalities, cardiothoracic ratio, maximum diameters of pulmonary annulus and main and branch pulmonary arteries, ventricular dimensions and function as well as ventricular Doppler flows. Karyotyping included fluorescence in-situ hybridization (FISH) analysis for microdeletion 22q11.2. RESULTS Median gestational age at diagnosis was 24 weeks. Three subtypes of APVS were observed: (1) with tetralogy of Fallot (TOF) and no arterial duct (n = 10; 83%); (2) isolated, with a large arterial duct (n = 1; 8%); and (3) with tricuspid atresia, right ventricular dysplasia and a restricted duct (n = 1; 8%). The cardiothoracic ratio and pulmonary artery dimensions were increased in all cases. The karyotype was abnormal in 70% of fetuses with TOF and their mortality rate was significantly higher due to pregnancy termination (n = 3) or perinatal demise (n = 2) (hazard ratio, 5; 95% CI, 0.87-28.9; P = 0.015). Of seven live births with active postnatal care, six children (86%) were alive without residual respiratory symptoms at a median follow-up of 4.7 (range, 2.1-10.6) years. CONCLUSION Outcome after fetal diagnosis of APVS was significantly better in this study compared with those of previous fetal series, with a low mortality rate for actively managed patients.
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Affiliation(s)
- D Wertaschnigg
- Fetal Cardiac Program, Labatt Family Heart Centre, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Canada
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Chung MS, Lee SH, Park KK, Yoo SJ, Chung BH. Comparative rapid onset of efficacy between doxazosin gastrointestinal therapeutic system and tamsulosin in patients with lower urinary tract symptoms from benign prostatic hyperplasia: a multicentre, prospective, randomised study. Int J Clin Pract 2011; 65:1193-9. [PMID: 21995695 DOI: 10.1111/j.1742-1241.2011.02759.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
AIMS To compare the rapidity of improvement in lower urinary tract symptoms (LUTS) for the doxazosin gastrointestinal therapeutic system (GITS) and tamsulosin in benign prostatic hyperplasia (BPH) patients. METHODS A total of 207 patients were randomised to one of two groups for a 12-week daily treatment with doxazosin-GITS 4 mg or tamsulosin 0.2 mg. The primary end-point was to compare the early onsets of efficacy between the two drugs. This was assessed by analysing the changes from baseline in the total International Prostate Symptom Score (IPSS) in the early period of treatment. Secondary aims were to compare improvements in obstructive/irritative subscore and quality of life (QoL) score between the two groups, and to evaluate the adverse events (AEs) with the drugs. RESULTS After 12 weeks of treatment, both groups showed significant improvements in IPSS scores (total, obstructive and irritative subscores, QoL score) from baseline (p < 0.0001). However, the doxazosin-GITS group showed significantly greater improvements in total IPSS and obstructive subscore than the tamsulosin group in the early period (p < 0.05). Improvements in irritative subscore (within 4 weeks) and QoL score (during 12 weeks) were not significantly different between the groups. The incidences of AEs were similar between the groups. CONCLUSION In this study, doxazosin-GITS showed significantly more rapid onset of efficacy and similar AEs compared with tamsulosin in BPH patients with LUTS. We believe this will probably improve patient compliance. Future studies with a larger number of patients and a longer follow-up period will be required to confirm this.
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Affiliation(s)
- M S Chung
- Yonsei University Health System, Gangnam Severance Hosipital, Seoul, Korea
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37
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Rhee EJ, Lee WY, Yoon KH, Yoo SJ, Lee IK, Baik SH, Kim YK, Lee MK, Park KS, Park JY, Cha BS, Lee HW, Min KW, Bae HY, Kim MJ, Kim JA, Kim DK, Kim SW. A multicenter, randomized, placebo-controlled, double-blind phase II trial evaluating the optimal dose, efficacy and safety of LC 15-0444 in patients with type 2 diabetes. Diabetes Obes Metab 2010; 12:1113-9. [PMID: 20977584 DOI: 10.1111/j.1463-1326.2010.01303.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AIM The objective of this study was to evaluate the optimal dose, efficacy and safety of a novel dipeptidyl peptidase-4 (DPP-IV) inhibitor, LC15-0444, in Korean subjects with type 2 diabetes mellitus treated by diet and exercise. METHODS This study was a double-blind, randomized, multicenter and parallel-group, dose-range finding study. We enrolled 145 patients (91 men and 54 women) with a median age of 53 years and a median body mass index of 25.1 kg/m(2) . The median baseline fasting plasma glucose (FPG) was 8.1 mmol/l, the median HbA1c was 7.9% and the median time since the diagnosis of diabetes was 3 years. After 2 weeks of an exercise/diet programme followed by 2 weeks of a placebo period, the subjects were randomized to one of the four following groups for a 12-week active treatment period: placebo and 50, 100 or 200 mg of LC15-0444. RESULTS All three doses of LC15-0444 significantly reduced the HbA1c from baseline compared to the placebo group (-0.06 vs. -0.98, -0.74 and -0.78% in the placebo and 50, 100 and 200 mg groups, respectively), without a significant difference between the doses. Subjects with a higher baseline HbA1c (≥8.5%) had a greater reduction in HbA1c. Insulin secretory function, as assessed using homeostasis model assessment-beta cell, C-peptide and the insulinogenic index, improved significantly with LC15-0444 treatment. Insulin sensitivity, as assessed using homeostasis model assessment-insulin resistance, also improved significantly after 12 weeks of treatment. The 50 and 200 mg groups had significantly reduced total cholesterol and low-density lipoprotein cholesterol levels at 12 weeks compared to the placebo group. No dosage of LC15-0444 affected weight or waist circumference. The incidences of adverse events were similar in all study subjects. CONCLUSIONS LC15-0444 monotherapy (50 mg for 12 weeks) improved the HbA1c, FPG level, oral glucose tolerance test results, β-cell function and insulin sensitivity measures, and was well tolerated in Korean subjects with type 2 diabetes.
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Affiliation(s)
- E J Rhee
- Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
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Lee JM, Kim SR, Yoo SJ, Hong OK, Son HS, Chang SA. The relationship between adipokines, metabolic parameters and insulin resistance in patients with metabolic syndrome and type 2 diabetes. J Int Med Res 2010; 37:1803-12. [PMID: 20146878 DOI: 10.1177/147323000903700616] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
This study was designed to investigate the relationship between adipokines in metabolic syndrome and insulin resistance. Sixty male and female subjects with or without metabolic syndrome and type 2 diabetes were included. The homeostasis model assessment of insulin resistance (HOMA-IR) was calculated. Compared with lean control subjects, patients with metabolic syndrome and type 2 diabetes had lower circulating levels of total adiponectin and high molecular weight (HMW) adiponectin, and higher levels of leptin and interleukin-6 (IL-6). Total and HMW adiponectin and the adiponectin/leptin (A/L) ratio were negatively correlated with HOMA-IR. After adjusting for age and sex, leptin, IL-6 and tumour necrosis factor-alpha (TNF-alpha) were positively correlated with HOMA-IR. After also adjusting for body mass index, HOMA-IR was found to be independently associated with leptin, A/L ratio and TNF-alpha levels. In conclusion, decreased total adiponectin and HMW adiponectin and increased leptin and IL-6 levels are characteristic of patients with metabolic syndrome and type 2 diabetes.
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Affiliation(s)
- J M Lee
- Department of Internal Medicine, The Catholic University of Korea, College of Medicine, Seoul, Republic of Korea
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Kwak DH, Yoo SJ, Lee EJ, Lee JW. Evaluation on simultaneous removal of particles and off-flavors using population balance for application of powdered activated carbon in dissolved air flotation process. Water Sci Technol 2010; 61:323-330. [PMID: 20107258 DOI: 10.2166/wst.2010.830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Most of the water treatment plants applying the DAF process are faced with off-flavors control problems. For simultaneous control of particles of impurities and dissolved organics that cause pungent taste and odor in water, an effective method would be the simple application of powdered activated carbon (PAC) in the DAF process. A series of experiments were carried out to explore the feasibility for simultaneous removal of kaolin particles and organic compounds that produce off-flavors (2-MIB and geosmin). In addition, the flotation efficiency of kaolin and PAC particles adsorbing organics in the DAF process was evaluated by employing the population balance theory. The removal efficiency of 2-MIB and geosmin under the treatment condition with kaolin particles for simultaneous treatment was lower than that of the individual treatment. The decrease in the removal efficiency was probably caused by 2-MIB and geosmin remaining in the PAC particle in the treated water of DAF after bubble flotation. Simulation results obtained by the population balance model indicate, that the initial collision-attachment efficiency of PAC particles was lower than that of kaolin particles.
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Affiliation(s)
- D H Kwak
- Department of Environmental Engineering, Seonam University, Namwon, Korea.
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Fontaine NK, Scott RP, Yang C, Geisler DJ, Heritage JP, Okamoto K, Yoo SJ. Compact 10 GHz loopback arrayed-waveguide grating for high-fidelity optical arbitrary waveform generation. Opt Lett 2008; 33:1714-1716. [PMID: 18670513 DOI: 10.1364/ol.33.001714] [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] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
We demonstrate a high-performance optical arbitrary waveform shaper based on a single 10 GHz arrayed-waveguide grating with 64 loopback waveguides and integrated amplitude and phase modulators on each waveguide. The design is compact and self-aligning and allows for bidirectional operation. The device's complex transfer function is manipulated and measured over the full 640 GHz passband. To demonstrate optical arbitrary waveform shaping, high-fidelity 15-line shaped waveforms are measured with cross-correlation frequency-resolved optical gating.
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Affiliation(s)
- Nicolas K Fontaine
- Department of Electrical and Computer Engineering, University of California, Davis, California 95616, USA.
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Yoo SJ, Kim DC, Joung M, Kim JS, Lee BJ, Oh KS, Kim KU, Kim YH, Kim YW, Choi SW, Son HJ, Park YC, Jang JN, Hong MP. Hyperthermal neutral beam sources for material processing. Rev Sci Instrum 2008; 79:02C301. [PMID: 18315241 DOI: 10.1063/1.2801343] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Hyperthermal neutral beams have a great potential for material processes, especially for etching and thin film deposition for semiconductor and display fabrication as well as deposition for various thin film applications. Plasma-induced damage during plasma etching is a serious problem for manufacturing deep submicron semiconductor devices and is expected to be a problem for future nanoscale devices. Thermal and plasma-induced damage is also problematic for thin film depositions such as transparent conductive oxide films on organic light emitting diodes or flexible displays due to high temperature processes in plasma environments. These problems can be overcome by damage-free and low-temperature processes with hyperthermal neutral beams. We will present the status of the hyperthermal neutral beam development and the applications, especially, in semiconductor and display fabrication and introduce potential applications of thin film growing for optoelectronic devices such as light emitting diodes.
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Affiliation(s)
- S J Yoo
- Group of Applied Technology Research, National Fusion Research Institute, Daejeon, Republic of Korea.
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Pae HO, Jeong GS, Jeong SO, Kim HS, Kim SA, Kim YC, Yoo SJ, Kim HD, Chung HT. Roles of heme oxygenase-1 in curcumin-induced growth inhibition in rat smooth muscle cells. Exp Mol Med 2007; 39:267-77. [PMID: 17603281 DOI: 10.1038/emm.2007.30] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
In vascular smooth muscle cells (VSMCs), induction of the heme oxygenase-1 (HO-1) confers vascular protection against cellular proliferation mainly via its up-regulation of the cyclin-dependent kinase inhibitor p21(WAF1/CIP1) that is involved in negative regulation of cellular proliferation. In the present study, we investigated whether the phytochemical curcumin and its metabolite tetrahydrocurcumin could induce HO-1 expression and growth inhibition in rat VSMCs and, if so, whether their antiproliferative effect could be mediated via HO-1 expression. At non-toxic concentrations, curcumin possessing two Michael-reaction acceptors induced HO-1 expression by activating antioxidant response element (ARE) through translocation of the nuclear transcription factor E2-related factor-2 (Nrf2) into the nucleus and also inhibited VSMC growth triggered by 5% FBS in a dose-dependent manner. In contrast, tetrahydrocurcumin lacking Michael-reaction acceptor showed no effect on HO-1 expression, ARE activation and VSMC growth inhibition. The antiproliferative effect of curcumin in VSMCs was accompanied by the increased expression of p21(WAF1/CIP1). Inhibition of VSMC growth and expression of p21(WAF1/CIP1) by curcumin were partially, but not completely, abolished when the cells were co- incubated with the HO inhibitor tin protoporphyrin. In human aortic smooth muscle cells (HASMCs), curcumin also inhibited growth triggered by TNF-alpha and increased p21(WAF1/CIP1) expression via HO-1-dependent manner. Our findings suggest that curcumin has an ability to induce HO-1 expression, presumably through Nrf2-dependent ARE activation, in rat VSMCs and HASMCs, and provide evidence that the antiproliferative effect of curcumin is considerably linked to its ability to induce HO-1 expression.
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Affiliation(s)
- Hyun-Ock Pae
- Medicinal Resources Research Institute, Department of Microbiology and Immunology, Wonkwang University, Iksan 570-749, Korea
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Kim G, Jang EC, Kim YS, Yoon SA, Kim SS, Yoo SJ, Chang YS, Kim YO. Sigmoid volvulus occurring during bowel preparation period before colonoscopy in a hemodialysis patient. Clin Nephrol 2006; 66:149-50. [PMID: 16939075 DOI: 10.5414/cnp66149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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An HJ, Jeong HJ, Lee EH, Kim YK, Hwang WJ, Yoo SJ, Hong SH, Kim HM. Xanthii fructus inhibits inflammatory responses in LPS-stimulated mouse peritoneal macrophages. Inflammation 2005; 28:263-70. [PMID: 16133999 DOI: 10.1007/s10753-004-6049-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Xanthii Fructus (XF) is an herb widely used in medicine for the treatment of a variety of inflammatory pathologies. In this study, using mouse peritoneal macrophages, we have examined whether XF affects nitric oxide (NO), tumor necrosis factor (TNF)-alpha, and interleukin (IL)-12p40 production induced by interferon (IFN)-gamma and lipopolysaccharide (LPS). XF inhibits IFN-gamma and LPS-induced NO production in a dose dependent manner. The decrease in NO synthesis was reflected as a decreased amount of inducible NO synthase protein. Furthermore, we also found that XF inhibits pro-inflammatory cytokine TNF-alpha production. However, treatment of XF in peritoneal macrophages had no effect on IL-12p40 production. These findings suggest that XF may be used in controlling macrophages-mediated inflammatory diseases.
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Affiliation(s)
- Hyo-Jin An
- College of Oriental Medicine, Kyung Hee University, Seoul, Republic of Korea
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Wu AYT, Kong NCT, de Leon FA, Pan CY, Tai TY, Yeung VTF, Yoo SJ, Rouillon A, Weir MR. An alarmingly high prevalence of diabetic nephropathy in Asian type 2 diabetic patients: the MicroAlbuminuria Prevalence (MAP) Study. Diabetologia 2005; 48:17-26. [PMID: 15616801 DOI: 10.1007/s00125-004-1599-9] [Citation(s) in RCA: 149] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2004] [Accepted: 10/22/2004] [Indexed: 11/28/2022]
Abstract
AIM/HYPOTHESIS Microalbuminuria represents the earliest clinical evidence of diabetic nephropathy and is a marker of increased cardiovascular morbidity and mortality. Its early detection allows the implementation of individualised and aggressive intervention programmes to reduce cardiovascular risk factors. There is limited information on the prevalence of microalbuminuria among hypertensive type 2 diabetic patients in Asia. METHODS This cross-sectional epidemiological study aimed to assess the prevalence of microalbuminuria and macroalbuminuria among consecutively screened hypertensive type 2 diabetic adult patients in 103 centres in 10 Asian countries or regions. Predictive factors for microalbuminuria and macroalbuminuria were characterised using a stepwise logistic regression model. RESULTS A total of 6,801 patients were enrolled and 5,549 patients constituted the per-protocol population (patients with bacteriuria and haematuria were excluded). The prevalence of microalbuminuria was 39.8% (39.2-40.5; 95% CI) and the prevalence of macroalbuminuria was 18.8% (18.2-19.3; 95% CI). Only 11.6% of the patients had systolic and diastolic blood pressure below the 130/80 mm Hg target. In the multivariate analyses, the predictive factors for the presence of microalbuminuria were age, BMI, systolic blood pressure and ethnic origin. The highlighted predictive factors for the presence of macroalbuminuria were age, sex, ethnic origin, BMI, duration of diabetes, presence of diabetic complications, intake of diuretics, intake of calcium channel blockers, diastolic and systolic blood pressure. CONCLUSIONS/INTERPRETATION The high prevalence (58.6%) of micro or macroalbuminuria observed in these patients is alarming and indicates an impending pandemic of diabetic cardiovascular and renal diseases in Asia with its potential economic consequences.
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Affiliation(s)
- A Y T Wu
- Wu Nephrology and Medical Clinic, Mount Elizabeth Medical Center, 3 Mount Elizabeth, 2258510, Singapore.
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You YO, Shin HY, Yu HH, Yoo SJ, Kim SH, Kim YK, Hong SH, Shin TY, Kim HM. Effect of Powerdental on caries-inducing properties of Streptococcus mutans and TNF-alpha secretion from HMC-1 cells. J Ethnopharmacol 2004; 92:331-335. [PMID: 15138020 DOI: 10.1016/j.jep.2004.03.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2003] [Revised: 02/12/2004] [Accepted: 03/10/2004] [Indexed: 05/24/2023]
Abstract
We studied the inhibitory effect of Powerdental on the growth and acid production of Streptococcus mutans as well as secretion of pro-inflammatory cytokine tumor necrosis factor-alpha (TNF-alpha). The growth of Streptococcus mutans was reduced by the presence of the Powerdental (1 mg/ml) and NaCl (1 mg/ml) significantly, and the positive control group (1% NaF) also exhibited a significant antibacterial activity. The decrease of pH was significantly inhibited in the presence of Powerdental (1 mg/ml) compared to the control group. The decrease in pH was also inhibited in the presence of positive control (1% NaF), but the bamboo salt alone did not show inhibitory activity. We also found that Powerdental (0.01 mg/ml) inhibited significantly the secretion of TNF-alpha with 46.5+/-0.2% from human mast cells. Our results suggest that Powerdental contributes to the prevention or treatment of periodontitis and other oral diseases or inflammatory diseases.
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Affiliation(s)
- Yong-Ouk You
- Department of Oral Biochemistry, School of Dentistry, Wonkwang University, Iksan, Republic of Korea
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Ko SH, Suh SH, Kim BJ, Ahn YB, Song KH, Yoo SJ, Son HS, Cha BY, Lee KW, Son HY, Kang SK, Bonner-Weir S, Weir GC, Yoon KH, Park CG. Expression of the intermediate filament vimentin in proliferating duct cells as a marker of pancreatic precursor cells. Pancreas 2004; 28:121-8. [PMID: 15028943 DOI: 10.1097/00006676-200403000-00002] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
OBJECTIVES The expression of the intermediate filament (IF) vimentin, usually considered a marker of mesenchymal cells, has been observed in the epithelial cells during embryogenesis, carcinogenesis, and dedifferentiation, suggesting that it might be useful as a marker of proliferating precursor cells in the pancreas. METHODS Rat pancreata at E18 and at different time points after partial pancreatectomy (Px) and human and neonatal pig pancreatic tissue sections and monolayer cultured pancreatic duct cells were observed. All tissues were simultaneously immunostained with pancytokeratin and vimentin antibodies. In costained duct cells, PDX-1 or PCNA expression was also analyzed using confocal microscope images. RESULTS In the rat embryonic pancreas at E18, all epithelial cells that formed ductlike structures expressed both cytokeratin and vimentin IF, whereas no duct cells costained for IF in the adult rat or neonatal pig pancreas. Such costaining reappeared in the following order: common pancreatic duct, main ducts, foci of regeneration and then disappeared completely at 30 days after Px. In humans, costaining was found in only 1 diabetic patient's pancreatic section, which was accompanied by massive duct cell proliferation. In monolayer culture, most of the duct cells of human and neonatal pigs coexpressed both IF proteins. Only a few costained duct cells also expressed PDX-1, and most of those cells were also stained with PCNA in rat embryonic pancreas and regenerating foci after partial Px. CONCLUSIONS Vimentin IF expression might be a useful marker for pancreatic precursor cells and could be used to investigate the concept of the dedifferentiation of fully matured duct cells during the process of the beta-cell neogenesis.
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Affiliation(s)
- S H Ko
- Division of Endocrinology and Metabolism, The Catholic University of Korea, Seoul, Korea
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Jeong HJ, Chung HS, Lee BR, Kim SJ, Yoo SJ, Hong SH, Kim HM. Expression of proinflammatory cytokines via HIF-1alpha and NF-kappaB activation on desferrioxamine-stimulated HMC-1 cells. Biochem Biophys Res Commun 2003; 306:805-11. [PMID: 12821113 DOI: 10.1016/s0006-291x(03)01073-8] [Citation(s) in RCA: 88] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
We investigated the expression and the role of hypoxia-inducible factor 1alpha (HIF-1alpha) on the desferrioxamine (DFX)-induced cytokine production in human mast cells, HMC-1 cells. HIF-1alpha mRNA was constitutively expressed in mast cell lines including the P815, RBL-2H3, and HMC-1. DFX (100 microM) resulted in a great increase in protein levels of HIF-1alpha in HMC-1 cells, but it did not affect HIF-1alpha mRNA expression. Iron (HIF-1 inhibitor) inhibited increase of HIF-1alpha and NF-kappaB protein levels. Pyrriolidine-dithiocarbamate (PDTC, NF-kappaB inhibitor) inhibited increase of NF-kappaB protein levels, but it slightly increased HIF-1alpha protein levels. In addition, DFX significantly increased the production of IL-6, IL-8, and TNF-alpha in HMC-1 (P<0.05). These increased cytokine levels were significantly inhibited by treatment of iron or PDTC in a dose-dependent manner (P<0.05). We demonstrated the regulatory effects of HIF-1alpha on the DFX-induced proinflammatory cytokine production in human mast cells for the first time. These data indicate that inflammatory cytokines seem to be under HIF-1alpha or NF-kappaB transcriptional regulation in the hypoxic conditions on mast cells.
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Affiliation(s)
- Hyun-Ja Jeong
- Department of Pharmacology, College of Oriental Medicine, Kyung Hee University, 1 Hoegi-Dong, Dongdaemun-Gu, Seoul 130-701, Republic of Korea
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Yoo SJ, Sung H, Chae JD, Kim MN, Pai CH, Park J, Kim JJ. Rhodococcus equi pneumonia in a heart transplant recipient in Korea, with emphasis on microbial diagnosis. Clin Microbiol Infect 2003; 9:230-3. [PMID: 12667256 DOI: 10.1046/j.1469-0691.2003.00480.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Rhodococcus equi is an opportunistic pathogen that usually causes infection in immunocompromised hosts. A heart transplant recipient who had been treated with amphotericin B for pulmonary aspergillosis showed newly developed multiple nodules with a central necrotic area in the right lower lobes. Cultures of several blood samples and an aspirate of the lung nodule yielded a Gram-positive coccobacillary bacterium, which was initially reported as a Corynebacterium species, but was later identified as R. equi by API CORYNE (bioMerieux SA, Marcy l'Etoile, France) and by demonstrating the production of 'equi factor'. The identification was subsequently confirmed by an R. equi-specific polymerase chain reaction (PCR). The patient was successfully treated with ciprofloxacin and azithromycin for 14 weeks. This is the first documented case of R. equi infection in Korea. There is a possibility of underestimation of R. equi infections due to the misidentification of the organism as a contaminating diphtheroid. Because R. equi will not respond to the conventional empirical therapy, the microbiology laboratory should identify R. equi in a timely manner. R. equi-specific PCR will be a useful confirmatory test in human infection.
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Affiliation(s)
- S J Yoo
- Department of Clinical Pathology, University of Ulsan College of Medicine, and Asan Medical Center, Seoul, Korea
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Kim J, Park CJ, Seo EJ, Lee JH, Yoo SJ, Choi SJ, Chi HS. A case of biphenotypic blast crisis of unclassified myeloproliferative disorder. Ann Hematol 2002; 81:603-4. [PMID: 12424544 DOI: 10.1007/s00277-002-0541-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2002] [Accepted: 08/28/2002] [Indexed: 11/28/2022]
Abstract
We report a first case of biphenotypic blast crisis of unclassified myeloproliferative disorder (MPD). A 20-year-old patient presented with fever, splenomegaly, marked leukocytosis (603 x 10(3)/ micro l), and blasts in the peripheral blood. Since Ph chromosome and bcr-abl gene rearrangement were absent, the diagnosis of an unclassified MPD in the blast crisis phase was established. Immunophenotyping confirmed a biphenotypic crisis of myeloid and T-lymphoid antigens. The patient went into a complete remission after chemotherapy, but marked granulocytic hyperplasia (M:E ratio of 5.7) and 90% cellularity remained. Blast crisis recurred during subsequent intensification chemotherapy and the patient did not go into a complete remission regardless of the intense chemotherapy. The blast crisis transformed from unclassified MPD had a grave prognosis as it responded poorly to chemotherapy. This unique blast crisis is distinguishable from the blast crisis of chronic myelogenous leukemia.
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Affiliation(s)
- J Kim
- Department of Clinical Pathology, University of Ulsan College of Medicine and Asan Medical Center, Seoul, Korea
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