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Park B, Lee S, Jang Y, Park HY. Affective dysfunction mediates the link between neuroimmune markers and the default mode network functional connectivity, and the somatic symptoms in somatic symptom disorder. Brain Behav Immun 2024; 118:90-100. [PMID: 38360374 DOI: 10.1016/j.bbi.2024.02.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 01/16/2024] [Accepted: 02/08/2024] [Indexed: 02/17/2024] Open
Abstract
OBJECTIVE Somatic symptom disorder (SSD) is characterized by physical symptoms and associated functional impairments that are often comorbid with depression and anxiety disorders. In this study, we explored relationships between affective symptoms and the functional connectivity of the default mode network (DMN) in SSD patients, as well as the impact of peripheral inflammation. We employed mediation analyses to investigate the potential pathways between these factors. METHODS We recruited a total of 119 individuals (74 unmedicated SSD patients and 45 healthy controls), who were subjected to comprehensive psychiatric and clinical evaluations, blood tests, and resting-state functional magnetic resonance imaging scanning. We assessed neuroimmune markers (interleukin-6 (IL-6), high-sensitivity C-reactive protein (hs-CRP), tumor necrosis factor-α (TNF-α), tryptophan, serotonin, and 5-hydroxyindoleacetic acid (5-HIAA)), clinical indicators of somatic symptoms, depression, anxiety, anger, alexithymia, and functional connectivity (FC) within the DMN regions. Data were analyzed using correlation and mediation analysis, with a focus on exploring potential relations between clinical symptoms, blood indices, and DMN FCs. RESULTS Patients with SSD had higher clinical scores as well as IL-6 and TNF-α levels compared with those in the control group (P < 0.05). The SSD group exhibited lower FC strength between the left inferior parietal lobule and left prefrontal cortex (Pfalse discovery rate (FDR) < 0.05). Exploratory correlation analysis revealed that somatic symptom scores were positively correlated with affective symptom scores, negatively correlated with the FC strength between the intra prefrontal cortex regions, and correlated with levels of IL-6, TNF- α, and tryptophan (uncorrected P < 0.01). Mediation analysis showed that levels of anxiety and trait anger significantly mediated the relations between DMN FC strength and somatic symptoms. In addition, the DMN FC mediated the level of trait anger with respect to somatic symptoms (all PFDR < 0.05). The levels of depression and trait anger exhibited significant mediating effects as suppressors of the relations between the level of 5-HIAA and somatic symptom score (all PFDR < 0.05). Further, the level of 5-HIAA had a mediating effect as a suppressor on the relation between DMN FC and state anger. Meanwhile, the levels of hs-CRP and IL-6 had full mediating effects as suppressors when explaining the relations of DMN FC strengths with the level of depression (all PFDR < 0.05). The patterns of valid mediation pathways were different in the control group. CONCLUSIONS Affective symptoms may indirectly mediate the associations between DMN connectivity, somatic symptoms, and neuroimmune markers. Inflammatory markers may also mediate the impact of DMN connectivity on affective symptoms. These results emphasize the importance of affective dysregulation in understanding the mechanisms of SSD and have potential implications for the development of tailored therapeutic approaches for SSD patients with affective symptoms. Furthermore, in SSD research using DMN FC or neuroimmune markers, considering and incorporating such mediating effects of affective symptoms suggests the possibility of more accurate prediction and explanation.
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Affiliation(s)
- Bumhee Park
- Department of Biomedical Informatics, Ajou University School of Medicine, Suwon, Republic of Korea; Office of Biostatistics, Medical Research Collaborating Center, Ajou Research Institute for Innovative Medicine, Ajou University Medical Center, Suwon, Republic of Korea
| | - Seulgi Lee
- Department of Biomedical Informatics, Ajou University School of Medicine, Suwon, Republic of Korea; Department of Biomedical Sciences, Graduate School of Ajou University, Suwon, Republic of Korea
| | - Yuna Jang
- Department of Psychiatry, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Hye Youn Park
- Department of Psychiatry, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea; Department of Psychiatry, Seoul National University College of Medicine, Seoul, Republic of Korea.
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Jang Y, Hur HJ, Park B, Park HY. Psychosocial Factors Associated with dizziness and chronic dizziness: a nationwide cross-sectional study. BMC Psychiatry 2024; 24:13. [PMID: 38166799 PMCID: PMC10762808 DOI: 10.1186/s12888-023-05464-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 12/15/2023] [Indexed: 01/05/2024] Open
Abstract
BACKGROUND Dizziness is a common symptom in adults, and chronic dizziness, such as persistent postural-perceptual dizziness, is also frequently reported and affects the quality of life of patients. This study aimed to identify psychosocial factors related to dizziness and chronic dizziness in a large-scale nationwide cohort. METHODS This population-based cross-sectional study used the database of the Eighth Korea National Health and Nutrition Examination Survey in 2020. Data from 4,147 adults over 40 years old were analyzed, and 1,102 adults who experienced dizziness were included in the dizziness cohort. Demographic data, medical conditions, comorbidities, functional status variables, nutritional variables and psychological variables were collected. The pattern of depressive symptoms according to the severity of dizziness was analyzed by network analysis. RESULTS The prevalence rate of dizziness was 24.6% in the general population, and chronic dizziness (≥ 3 months) developed in 210 of 1,102 (17.1%) individuals who experienced dizziness. Multiple logistic regression analysis revealed that female sex, stress, and depression were associated with dizziness. Chronic dizziness was related to tympanic abnormalities, diabetes, short sleep duration, and higher levels of stress and depression. Psychomotor retardation/agitation was a central symptom of depression in patients with chronic dizziness. CONCLUSIONS This study found sex differences in factors associated with dizziness and identified psychosocial factors linked to chronic dizziness. Focusing on somatic factors rather than depressive symptoms may benefit patients with chronic dizziness.
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Affiliation(s)
- Yuna Jang
- Department of Psychiatry, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Hyun Jung Hur
- Department of Psychiatry, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Bumhee Park
- Department of Biomedical Informatics, Ajou University School of Medicine, Suwon, Republic of Korea
- Office of Biostatistics, Medical Research Collaborating Center, Ajou Research Institute for innovative Medicine, Ajou University Medical Center, Suwon, Republic of Korea
| | - Hye Youn Park
- Department of Psychiatry, Seoul National University Bundang Hospital, Seongnam, South Korea.
- Department of Psychiatry, Seoul National University College of Medicine, Seoul, South Korea.
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Choi S, Jang Y, Kim H. A Deep Learning Approach to Imputation of Dynamic Pupil Size Data and Prediction of ADHD. INT J ARTIF INTELL T 2022. [DOI: 10.1142/s0218213023500203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Andersen D, Jang Y, Borzée A. Influence of landscape and connectivity on anuran conservation: population viability analyses to designate protected areas. Anim Conserv 2022. [DOI: 10.1111/acv.12829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- D. Andersen
- Department of Life Science and Division of EcoScience Ewha Womans University Seoul Republic of Korea
| | - Y. Jang
- Department of Life Science and Division of EcoScience Ewha Womans University Seoul Republic of Korea
- Interdisciplinary Program of EcoCreative Ewha Womans University Seoul Republic of Korea
| | - A. Borzée
- Laboratory of Animal Behaviour and Conservation, College of Biology and the Environment Nanjing Forestry University Nanjing Jiangsu People's Republic of China
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Kim Y, Ryu J, Jang Y, Kim D, Bang Y, Choi S, Moon J, Kim H, Shin J. 138 Single-cell RNA-seq of dorsal root ganglion reveals neuroinflammatory process in atopic dermatitis. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.05.144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Affiliation(s)
- Y Jang
- National Institute of Crop Science, Rural Development Administration, Miryang 50424, Korea
| | - H Yi
- National Institute of Crop Science, Rural Development Administration, Miryang 50424, Korea
| | - R Maharjan
- National Institute of Crop Science, Rural Development Administration, Miryang 50424, Korea
| | - M Jeong
- National Institute of Crop Science, Rural Development Administration, Miryang 50424, Korea
| | - Y Yoon
- National Institute of Crop Science, Rural Development Administration, Miryang 50424, Korea
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Li Z, Siddiqi U, Patel A, Rasheed N, Jang Y, Cruz J, Hoang R, Hu K, Deji-Abiodun O, Rodgers D, Jeevanandam V, Olopade C. Impact of Obstructive Sleep Apnea on Clinical Outcomes Following Left Ventricular Assist Device Implantation. J Heart Lung Transplant 2022. [DOI: 10.1016/j.healun.2022.01.674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Jang H, Choi Y, Kwon E, Choi N, Jang Y, Song J, Shin S. Optimal application of compressive palatal stents following mesiodens removal in pediatric patients: A Randomized Controlled Trial. Med Oral Patol Oral Cir Bucal 2021; 26:e808-e814. [PMID: 34704974 PMCID: PMC8601646 DOI: 10.4317/medoral.24802] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Accepted: 10/04/2021] [Indexed: 11/17/2022] Open
Abstract
Background There is no scientific evidence supporting the choice of a palatal stent in patients who underwent removal of an impacted supernumerary tooth. We aimed to investigate the effects of palatal stents in patients who underwent supernumerary tooth removal through a palatal approach and to suggest the optimal stent thickness and material. Material and Methods We recruited 144 patients who underwent extraction of a supernumerary tooth between the maxillary anterior teeth. Subjects were assigned to a control group (CG) or one of four compressive palatal stent groups (CPSGs) classified by the thickness and material of the thermoplastic acrylic stent used. Palatal gingival swelling and objective indices (healing, oral hygiene, gingival, and plaque) were evaluated before surgery and on postoperative days (PODs) 3, 7, and 14; pain/discomfort and the Child Oral Health Impact Profile (COHIP) were assessed as subjective indices of the effects of the stent. Results The CPSGs showed faster healing than did the CG on PODs 7 (P<0.001) and 14 (P=0.043); swelling was measured by 1.64±0.88 mm and 4.52±0.39 mm, respectively. Although swelling was least in the 4-mm hard group (0.92±0.33 mm), the difference compared with that in the 2-mm hard group (1.01±0.18 mm) was not significant (P=0.077). The CPSGs showed better COHIP (P<0.001-0.036) and pain scores (P<0.001) than did the CG on PODs 1-3. Conclusions Compressive palatal stents reduce discomfort by decreasing pain and alleviating swelling. Although a stent is effective regardless of its thickness and material, 2-mm hard stents maximized such positive effects with minimal discomfort. Key words:Supernumerary tooth, tooth Extraction, postoperative care, oral Health, pediatric dentistry.
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Affiliation(s)
- H Jang
- Department of Oral and Maxillofacial surgery, Pusan National University, School of Dentistry, Korea Dental and Life Science Institute, School of Dentistry, Pusan National University, Korea Beomeo, Mulgeum, Yangsan, 50612, Republic of Korea
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Cha J, Son T, Ha J, Kim J, Hong S, Ahn C, Kim B, Ko Y, Choi D, Hong M, Jang Y. Machine learning for predicting fractional flow reserve based on optical coherence tomography in intermediate coronary stenosis. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2477] [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
Background
Machine learning approaches using intravascular optical coherence tomography (OCT) to predict fractional flow reserve (FFR) have not been previously investigated. The objective of the study was to evaluate a machine learning method to estimate FFR based on intravascular OCT images in intermediate coronary lesions.
Methods
Data from both OCT- and wire-based FFR methods were obtained for lesions of the left anterior descending artery in 125 patients. Based on the total number of lesions, training and testing groups were partitioned at a ratio of 5:1. For the training group, 36 features, including 16 clinical and lesion characteristics, and 21 OCT features, were used to model machine learning-FFR. machine learning-FFR values were then derived for the testing group and compared with wire-based FFR values in terms of a diagnosis of ischemia (FFR <0.8).
Results
Clinical and lesion characteristics and OCT features between the training and testing groups were similar. During the machine learning modeling of the training group, six important features of machine learning-FFR were identified: minimal luminal area, percentage of the stenotic area, lesion length, proximal luminal area, pre-procedural platelet count, and hypertension. machine learning-FFR values showed a good correlation (r=0.853, P<0.001) with wire-based FFR values (Figure 1A). The diagnostic power of an FFR value less than 0.8, sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of machine learning-FFR values for the testing group were 85.7%, 100%, 100%, 77.8%, and 90.5%, respectively (Figure 1B). Additionally, OCT-based machine learning-FFR values showed a good diagnostic accuracy compared with other image-based FFR values.
Conclusions
The OCT-based machine learning-FFR method can be used to simultaneously acquire information on both image and functional modalities using one invasive procedure, suggesting that it may be used to optimize treatments for intermediate coronary artery stenosis, as well as save time and cost.
Funding Acknowledgement
Type of funding source: Public grant(s) – National budget only. Main funding source(s): Funded by the Korean government (MSIT) (no. 2017R1A2B2003191)
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Affiliation(s)
- J.J Cha
- Korea University Anam Hospital, Division of Cardiology, Department of Internal Medicine, Seoul, Korea (Republic of)
| | - T.D Son
- Yonsei University, Electrical Engineering, Seoul, Korea (Republic of)
| | - J Ha
- Yonsei University, Electrical Engineering, Seoul, Korea (Republic of)
| | - J.S Kim
- Yonsei University College of Medicine, Severance Cardiovascular Hospital, Department of Internal Medicine, Division of Cardiology, Seoul, Korea (Republic of)
| | - S.J Hong
- Yonsei University College of Medicine, Severance Cardiovascular Hospital, Department of Internal Medicine, Division of Cardiology, Seoul, Korea (Republic of)
| | - C.M Ahn
- Yonsei University College of Medicine, Severance Cardiovascular Hospital, Department of Internal Medicine, Division of Cardiology, Seoul, Korea (Republic of)
| | - B.K Kim
- Yonsei University College of Medicine, Severance Cardiovascular Hospital, Department of Internal Medicine, Division of Cardiology, Seoul, Korea (Republic of)
| | - Y.G Ko
- Yonsei University College of Medicine, Severance Cardiovascular Hospital, Department of Internal Medicine, Division of Cardiology, Seoul, Korea (Republic of)
| | - D Choi
- Yonsei University College of Medicine, Severance Cardiovascular Hospital, Department of Internal Medicine, Division of Cardiology, Seoul, Korea (Republic of)
| | - M.K Hong
- Yonsei University College of Medicine, Severance Cardiovascular Hospital, Department of Internal Medicine, Division of Cardiology, Seoul, Korea (Republic of)
| | - Y Jang
- Yonsei University College of Medicine, Severance Cardiovascular Hospital, Department of Internal Medicine, Division of Cardiology, Seoul, Korea (Republic of)
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Jang WY, Kang DO, Park Y, Lee J, Kim W, Choi JY, Roh SY, Jang Y, Park SH, Kim WS, Na JO, Choi CU, Rha SW, Park CG, Seo HS, Kim EJ. Validation of FRIEND and ACSM Equations for Cardiorespiratory Fitness: Comparison to Direct Measurement in CAD Patients. J Clin Med 2020; 9:jcm9061889. [PMID: 32560313 PMCID: PMC7356312 DOI: 10.3390/jcm9061889] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 05/29/2020] [Accepted: 06/10/2020] [Indexed: 01/05/2023] Open
Abstract
The regression equation of the American College of Sports Medicine (ACSM) was a preferred method for estimating maximal oxygen consumption (VO2max). Recently, a more precise equation from the fitness registry and the importance of exercise national database (FRIEND) for healthy people was developed. This study compared VO2max estimated by the ACSM and FRIEND equations to VO2max directly measured in coronary artery disease (CAD) patients. Overall, 293 CAD patients who participated in cardiac rehabilitation between June 2015 and December 2018 were analyzed. Directly measured VO2max values were compared to the ACSM and FRIEND equations. The directly measured VO2max was significantly different from the estimated VO2max by ACSM equation (24.16 vs. 28.7 mL/kg/min, p < 0.001), which was overestimated by 20% in men and 16% in women. However, there was no statistically significant difference between the directly measured VO2max and the estimated VO2max by the FRIEND equation. (24.16 vs. 24.15 mL/kg/min, p = 0.986). In CAD patients, the estimated VO2max from the ACSM equation was significantly higher than the directly measured VO2max. In addition, estimated cardiorespiratory fitness (CRF) by the FRIEND equation showed similar results with directly measured CRF. As a result, the FRIEND equation can predict CRF more accurately than the ACSM.
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Affiliation(s)
- Won Young Jang
- Cardiovascular Center, Division of Cardiology, Department of Internal Medicine, Catholic University of Korea St. Vincent Hospital, The Catholic University of Korea College of Medicine, Suwon 16247, Korea;
| | - Dong Oh Kang
- Cardiovascular Center, Division of Cardiology, Department of Internal Medicine, Korea University Guro Hospital, Korea University College of Medicine, Seoul 08308, Korea; (D.O.K.); (J.L.); (W.K.); (J.Y.C.); (S.-Y.R.); (Y.J.); (J.O.N.); (C.U.C.); (S.-W.R.); (C.G.P.); (H.S.S.)
| | - Yoonjee Park
- Division of Cardiology, Department of Internal Medicine, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Korea;
| | - Jieun Lee
- Cardiovascular Center, Division of Cardiology, Department of Internal Medicine, Korea University Guro Hospital, Korea University College of Medicine, Seoul 08308, Korea; (D.O.K.); (J.L.); (W.K.); (J.Y.C.); (S.-Y.R.); (Y.J.); (J.O.N.); (C.U.C.); (S.-W.R.); (C.G.P.); (H.S.S.)
| | - Woohyeun Kim
- Cardiovascular Center, Division of Cardiology, Department of Internal Medicine, Korea University Guro Hospital, Korea University College of Medicine, Seoul 08308, Korea; (D.O.K.); (J.L.); (W.K.); (J.Y.C.); (S.-Y.R.); (Y.J.); (J.O.N.); (C.U.C.); (S.-W.R.); (C.G.P.); (H.S.S.)
| | - Jah Yeon Choi
- Cardiovascular Center, Division of Cardiology, Department of Internal Medicine, Korea University Guro Hospital, Korea University College of Medicine, Seoul 08308, Korea; (D.O.K.); (J.L.); (W.K.); (J.Y.C.); (S.-Y.R.); (Y.J.); (J.O.N.); (C.U.C.); (S.-W.R.); (C.G.P.); (H.S.S.)
| | - Seung-Young Roh
- Cardiovascular Center, Division of Cardiology, Department of Internal Medicine, Korea University Guro Hospital, Korea University College of Medicine, Seoul 08308, Korea; (D.O.K.); (J.L.); (W.K.); (J.Y.C.); (S.-Y.R.); (Y.J.); (J.O.N.); (C.U.C.); (S.-W.R.); (C.G.P.); (H.S.S.)
| | - Yuna Jang
- Cardiovascular Center, Division of Cardiology, Department of Internal Medicine, Korea University Guro Hospital, Korea University College of Medicine, Seoul 08308, Korea; (D.O.K.); (J.L.); (W.K.); (J.Y.C.); (S.-Y.R.); (Y.J.); (J.O.N.); (C.U.C.); (S.-W.R.); (C.G.P.); (H.S.S.)
| | - Se-Hyun Park
- Sport Science Center, Korea University Guro Hospital, Seoul 08308, Korea;
| | - Woo-Sub Kim
- Department of rehabilitation, Korea University Guro Hospital, Korea University College of Medicine, Seoul 08308, Korea;
| | - Jin Oh Na
- Cardiovascular Center, Division of Cardiology, Department of Internal Medicine, Korea University Guro Hospital, Korea University College of Medicine, Seoul 08308, Korea; (D.O.K.); (J.L.); (W.K.); (J.Y.C.); (S.-Y.R.); (Y.J.); (J.O.N.); (C.U.C.); (S.-W.R.); (C.G.P.); (H.S.S.)
| | - Cheol Ung Choi
- Cardiovascular Center, Division of Cardiology, Department of Internal Medicine, Korea University Guro Hospital, Korea University College of Medicine, Seoul 08308, Korea; (D.O.K.); (J.L.); (W.K.); (J.Y.C.); (S.-Y.R.); (Y.J.); (J.O.N.); (C.U.C.); (S.-W.R.); (C.G.P.); (H.S.S.)
| | - Seung-Woon Rha
- Cardiovascular Center, Division of Cardiology, Department of Internal Medicine, Korea University Guro Hospital, Korea University College of Medicine, Seoul 08308, Korea; (D.O.K.); (J.L.); (W.K.); (J.Y.C.); (S.-Y.R.); (Y.J.); (J.O.N.); (C.U.C.); (S.-W.R.); (C.G.P.); (H.S.S.)
| | - Chang Gyu Park
- Cardiovascular Center, Division of Cardiology, Department of Internal Medicine, Korea University Guro Hospital, Korea University College of Medicine, Seoul 08308, Korea; (D.O.K.); (J.L.); (W.K.); (J.Y.C.); (S.-Y.R.); (Y.J.); (J.O.N.); (C.U.C.); (S.-W.R.); (C.G.P.); (H.S.S.)
| | - Hong Seog Seo
- Cardiovascular Center, Division of Cardiology, Department of Internal Medicine, Korea University Guro Hospital, Korea University College of Medicine, Seoul 08308, Korea; (D.O.K.); (J.L.); (W.K.); (J.Y.C.); (S.-Y.R.); (Y.J.); (J.O.N.); (C.U.C.); (S.-W.R.); (C.G.P.); (H.S.S.)
| | - Eung Ju Kim
- Cardiovascular Center, Division of Cardiology, Department of Internal Medicine, Korea University Guro Hospital, Korea University College of Medicine, Seoul 08308, Korea; (D.O.K.); (J.L.); (W.K.); (J.Y.C.); (S.-Y.R.); (Y.J.); (J.O.N.); (C.U.C.); (S.-W.R.); (C.G.P.); (H.S.S.)
- Correspondence: ; Tel.: +82-2-2626-3022
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Ko Y, Lee G, Kim B, Park M, Jang Y, Lim W. Modification of the RANKL-RANK-binding site for the immunotherapeutic treatment of osteoporosis. Osteoporos Int 2020; 31:983-993. [PMID: 31863125 DOI: 10.1007/s00198-019-05200-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 10/16/2019] [Indexed: 12/20/2022]
Abstract
UNLABELLED Here, we proposed the use of mutated RANKL as an immunogen for active immunization and to induce anti-cytokine antibodies for osteoporosis treatment. INTRODUCTION Osteoclasts are responsible for bone resorption in bone-related disorders. Anti-cytokine therapeutic antibodies such as denosumab are effective for the treatment of osteoporosis. However, problems with antibody manufacturing and the immunogenicity caused by multiple antibody doses have led to the use of auto-cytokines as immunogens to induce anti-cytokine antibodies. METHODS RANKL was point-mutated based on the crystal structure of the complex of RANKL and its receptor RANK. RESULTS As a proof of concept, immunization with RANKL produced high levels of specific antibodies and blocked osteoclast development in vitro and inhibited osteoporosis in RANKL-treated or ovariectomized mouse models. CONCLUSIONS The results demonstrate the successful use of mutated RANKL as an immunogen for the induction of anti-RANKL immune response. This strategy is useful in general anti-cytokine immunotherapy to avoid toxic side effects of osteoporosis treatment.
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Affiliation(s)
- Y Ko
- Department of Orthopaedic Surgery, Chosun University Hospital, Gwangju, 61453, South Korea
- Laboratory of Orthopaedic Research, Chosun University Hospital, Gwangju, 61453, South Korea
| | - G Lee
- Department of Orthopaedic Surgery, Chosun University Hospital, Gwangju, 61453, South Korea
- Laboratory of Orthopaedic Research, Chosun University Hospital, Gwangju, 61453, South Korea
| | - B Kim
- Department of Orthopaedic Surgery, Chosun University Hospital, Gwangju, 61453, South Korea
- Laboratory of Orthopaedic Research, Chosun University Hospital, Gwangju, 61453, South Korea
| | - M Park
- Department of Orthopaedic Surgery, Chosun University Hospital, Gwangju, 61453, South Korea
- Laboratory of Orthopaedic Research, Chosun University Hospital, Gwangju, 61453, South Korea
| | - Y Jang
- Department of Orthopaedic Surgery, Chosun University Hospital, Gwangju, 61453, South Korea
- Laboratory of Orthopaedic Research, Chosun University Hospital, Gwangju, 61453, South Korea
- Department of Premedical Program, School of Medicine, Chosun University, Gwangju, 61452, South Korea
| | - W Lim
- Department of Orthopaedic Surgery, Chosun University Hospital, Gwangju, 61453, South Korea.
- Laboratory of Orthopaedic Research, Chosun University Hospital, Gwangju, 61453, South Korea.
- Department of Premedical Program, School of Medicine, Chosun University, Gwangju, 61452, South Korea.
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Kim YH, Her AY, Jeong MH, Kim BK, Lee SY, Hong SJ, Shin DH, Ahn CM, Kim JS, Ko YG, Choi D, Hong MK, Jang Y. P4393Current smoking and gender difference in South Korean AMI patients who underwent PCI with DES. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
There is some debate on whether or not there is a gender difference is present between current smoking and cardiovascular disease.
Purpose
We decide to evaluate the impact of sex difference on the 2-year clinical outcomes in Korean acute myocardial infarction (AMI) patients who currently smoke and who underwent percutaneous coronary intervention (PCI) with drug-eluting stents (DES).
Methods
The data of this study was obtained from the Korea Acute Myocardial Infarction (KAMIR) registry. More than fifty high-volume universites or community hospitals with facilities for primary PCI and onsite cardiac surgery participated in this KAMIR registry. A total of 12565 current smoker AMI patients were enrolled and divided into the male (n=11767, 93.6%) or female (n=798, 6.4%) group. The clinical endpoint was the occurrence of major adverse cardiac events (MACE) defined as all-cause death, recurrent myocardial infarction (re-MI), and total repeat revascularization.
Results
Before risk adjustment, the cumulative incidences of MACE (7.2% vs. 10.0%, hazard ratio [HR], 1.419; 95% confidence interval [CI], 1.125–1.790; P=0.003), all-cause death (HR, 1.988; 95% CI, 1.417–2.789; P<0.001), and re-MI (HR, 1.885; 95% CI, 1.154–3.078; P=0.011) were significantly higher in the female group compared with the male group. However, after adjustment the cumulative incidences of MACE (adjusted HR, 1.047; 95% CI, 0.756–1.450; P=0.782), all-cause death, re-MI, total repeat revascularization, TLR, TVR, and non-TVR were similar between the two groups.
Clinical outcomes at 2-year Outcomes Cumulative Events at 2-year (%) Unadjusted Adjusted* Propensity-score adjusted Male Female Log-rank Hazard Ratio (95% CI) p value Hazard Ratio (95% CI) p value Hazard Ratio (95% CI) p value MACE 819 (7.2) 78 (10.0) 0.003 1.419 (1.125–1.790) 0.003 1.047 (0.756–1.450) 0.782 1.133 (0.871–1.473) 0.352 All-cause death 283 (2.5) 38 (4.8) <0.001 1.988 (1.417–2.789) <0.001 0.764 (0.457–1.279) 0.306 1.105 (0.744–1.641) 0.620 Cardiac death 224 (1.9) 25 (3.2) 0.016 1.654 (1.094–2.500) 0.017 0.512 (0.261–1.005) 0.052 0.822 (0.511–1.322) 0.419 Re-MI 142 (1.3) 18 (2.4) 0.010 1.885 (1.154–3.078) 0.011 1.741 (0.887–3.419) 0.107 1.835 (1.109–3.375) 0.062 Total revascularization 444 (4.0) 27 (3.6) 0.594 0.900 (0.610–1.327) 0.594 1.069 (0.654–1.748) 0.789 0.956 (0.627–1.458) 0.835 TLR 121 (1.1) 8 (1.1) 0.956 0.980 (0.479–2.004) 0.956 0.955 (0.366–2.497) 0.926 0.868 (0.395–1.910) 0.726 TVR 228 (2.1) 14 (1.9) 0.726 0.908 (0.529–1.558) 0.726 1.051 (0.518–2.135) 0.890 0.935 (0.519–1.684) 0.823 Non-TVR 223 (2.0) 13 (1.7) 0.602 0.862 (0.493–1.508) 0.602 1.060 (0.536–2.097) 0.867 0.942 (0.514–1.726) 0.847
Conclusion
Before risk adjustment, a gender difference was suggested in the female group compared with the male in these current smoker South Korean AMI patients during a 2-year follow-up period. However, after adjustment, gender difference was not observed in these AMI patients with a history of current smoking.
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Affiliation(s)
- Y H Kim
- Kangwon National University School of Medicine, Chuncheon City, Korea (Republic of)
| | - A.-Y Her
- Kangwon National University School of Medicine, Chuncheon City, Korea (Republic of)
| | - M H Jeong
- Chonnam National University Hospital, Department of Cardiology, Gwangju, Korea (Republic of)
| | - B.-K Kim
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - S.-Y Lee
- Sanbon Hospital, Wonkwang University College of Medicine, Department of Cardiology, Gunpo, Korea (Republic of)
| | - S.-J Hong
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - D.-H Shin
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - C.-M Ahn
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - J.-S Kim
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - Y.-G Ko
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - D Choi
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - M.-K Hong
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - Y Jang
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
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Son H, Jang Y, Ahn J, Jung C, Ha T. P.1282, 6-Dimethoxy-1, 4-benzoquinone increases skeletal muscle mass through Akt/mTOR signaling pathway. Neuromuscul Disord 2019. [DOI: 10.1016/j.nmd.2019.06.184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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14
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Kim YH, Her AY, Jeong MH, Kim BK, Lee SY, Hong SJ, Shin DH, Ahn CM, Kim JS, Ko YG, Choi D, Hong MK, Jang Y. P833Two-year clinical outcomes between statin with ACE inhibitor or ARB in patients with ST-segment elevation myocardial infarction after successful PCI with DES. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0432] [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
Background
Limited comparative data are available.
Purpose
We decided to compare 2-year major clinical outcomes between statin with ACEI and statin ARB therapy in patients with STEMI after PCI with drug-eluting stents (DES).
Methods
A total 11706 STEMI patients who underwent PCI with DES and who prescribed statin were enrolled and they were divided into two groups, the statin with ACEI group (n=8705) and the statin with ARB group (n=3001). The primary endpoint was the major adverse cardiac events (MACE) defined as all-cause death, recurrent myocardial infarction (re-MI), target lesion revascularization (TLR), target vessel revascularization (TVR), non-TVR. The secondary endpoints were the cumulative incidences of individual components of MACE and target vessel failure (TVF), a composite of death related to the target vessel, re-MI, or clinically driven TVR.
Results
Two PSM groups (2835 pairs, n=5670, C-statistic = 0.680) were generated. The relative risk of MACE was higher in the statin with ARB group compared to statin with ACEI groups after propensity score-matched (PSM) analysis (hazard ratio [HR]: 1.323, 95% confidence interval [CI]: 1.085–1.613, p=0.006). The relative risks of cardiac death (HR: 1.831, 95% CI: 1.199–2.740, p=0.005), total repeat revascularization (HR: 1.487, 95% CI: 1.133–1.950, p=0.004), and non-TVR (HR: 1.696, 95% CI: 1.122–2.564, p=0.012) were also higher in the statin with ARB group after PSM.
Outcomes Cumulative Events at 2-year (%) Hazard Ratio (95% CI) p value Statin + ACEI Statin + ARB Log-rank Propensity score matched Patients MACE 173 (6.5) 225 (8.5) 0.006 1.323 (1.085–1.613) 0.006 All-cause death 58 (2.2) 80 (3.0) 0.054 1.391 (0.992–1.950) 0.056 Cardiac death 35 (1.3) 63 (2.3) 0.004 1.831 (1.199–2.740) 0.005 Re-MI 39 (1.5) 44 (1.7) 0.548 1.141 (0.742–1.756) 0.548 Total repeat revascularization 88 (3.4) 128 (4.9) 0.004 1.487 (1.133–1.950) 0.004 TLR 26 (1.0) 40 (1.5) 0.075 1.561 (0.953–2.558) 0.077 TVR 53 (2.0) 71 (2.8) 0.086 1.364 (0.955–1.946) 0.088 Non-TVR 36 (1.4) 60 (2.3) 0.011 1.696 (1.122–2.564) 0.012 TVF 140 (5.3) 173 (6.6) 0.050 1.249 (1.000–1.561) 0.050
Conclusions
In this study, we suggest that the combination of statin with ACEI may be beneficial for reducing the cumulative incidences of MACE, total repeat revascularization rate, and non-TVR rather than the statin with ARB after PCI with DES in STEMI patients.
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Affiliation(s)
- Y H Kim
- Kangwon National University School of Medicine, Chuncheon City, Korea (Republic of)
| | - A.-Y Her
- Kangwon National University School of Medicine, Chuncheon City, Korea (Republic of)
| | - M.-H Jeong
- Chonnam National University Hospital, Department of Cardiology, Gwangju, Korea (Republic of)
| | - B.-K Kim
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - S.-Y Lee
- Sanbon Hospital, Wonkwang University College of Medicine, Department of Cardiology, Gunpo, Korea (Republic of)
| | - S.-J Hong
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - D.-H Shin
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - C.-M Ahn
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - J.-S Kim
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - Y.-G Ko
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - D Choi
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - M.-K Hong
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - Y Jang
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
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Kim YH, Her AY, Jeong MH, Kim BK, Lee SY, Hong SJ, Shin DH, Ahn CM, Kim JS, Ko YG, Choi D, Hong MK, Jang Y. P5362Impact of statin therapy on long-term clinical outcomes between STEMI and NSTEMI after stent implantation. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0327] [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
Background
Although European guideline recommends that statin should be given to all patients with acute myocardial infarction (AMI), irrespective of cholesterol concentration, limited studies were focused on the long-term effects of statin therapy between ST-segment elevation MI (STEMI) and non-ST-segment elevation MI (NSTEMI).
Purpose
The authors conducted the study to compare the relative beneficial role of statin on 2-year major clinical outcomes between STEMI and NSTEMI in patients who underwent successful PCI with DES.
Methods
Finally, a total of 26317 AMI patients who underwent stent implantation and who were prescribed the statin were enrolled and they were separated into two groups; the STEMI group (n=15002) and the NSTEMI group (n=11315). The clinical endpoint was the occurrence of major adverse cardiac events (MACE) defined as all-cause death, recurrent myocardial infarction (re-MI), total coronary revascularization (target lesion revascularization [TLR], target vessel revascularization [TVR], non-TVR) during 2-year follow-up period.
Results
After propensity score-matched (PSM) analysis, two PSM groups (7746 pairs, n=15492, C-statistic = 0.766) were generated. In the total study population, the cumulative incidences of MACE, all-cause death, and cardiac death were significantly higher in the NSTEMI group. However, after PSM, the cumulative incidence of all-cause death (Hazard ratio, 1.386; 95% CI, 1.133–1.696; p=0.002) was significantly higher in the NSTEMI group. The cumulative incidences of MACE, cardiac death, re-MI, total revascularization, TLR, TVR, and non-TVR were similar between the two groups (Table 1).
Outcomes Cumulative Events at 2-year (%) Hazard Ratio (95% CI) p value STEMI NSTEMI Log-rank Propensity score matched patients MACE 532 (7.2) 584 (8.1) 0.092 1.106 (0.984–1.244) 0.092 All-cause death 163 (2.2) 224 (3.1) 0.001 1.386 (1.133–1.696) 0.002 Cardiac death 121 (1.5) 148 (2.0) 0.088 1.232 (0.969–1.566) 0.089 Re-MI 117 (1.6) 107 (1.5) 0.545 0.922 (0.710–1.199) 0.545 Total revascularization 291 (4.1) 307 (4.4) 0.422 1.068 (0.910–1.254) 0.423 TLR 92 (1.3) 89 (1.2) 0.880 0.978 (0.731–1.309) 0.880 TVR 173 (2.4) 184 (2.6) 0.478 1.078 (0.876–1.327) 0.478 Non-TVR 123 (1.7) 130 (1.9) 0.593 1.070 (0.836–1.369) 0.539
Conclusion
The mortality reduction capability of statin was more prominent in the STEMI group compared with the NSTEMI group.
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Affiliation(s)
- Y H Kim
- Kangwon National University School of Medicine, Chuncheon City, Korea (Republic of)
| | - A.-Y Her
- Kangwon National University School of Medicine, Chuncheon City, Korea (Republic of)
| | - M H Jeong
- Chonnam National University Hospital, Department of Cardiology, Gwangju, Korea (Republic of)
| | - B.-K Kim
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - S.-Y Lee
- Sanbon Hospital, Wonkwang University College of Medicine, Department of Cardiology, Gunpo, Korea (Republic of)
| | - S.-J Hong
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - D.-H Shin
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - C.-M Ahn
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - J.-S Kim
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - Y.-G Ko
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - D Choi
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - M.-K Hong
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - Y Jang
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
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Kim YH, Her AY, Jeong MH, Kim BK, Lee SY, Hong SJ, Shin DH, Ahn CM, Kim JS, Ko YG, Choi D, Hong MK, Jang Y. P5494Impact of the gender difference on long-term clinical outcomes in dyslipidemic South Korean AMI patients who underwent PCI with new-generation DES. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0445] [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: 11/13/2022] Open
Abstract
Abstract
Background
There are limited comparative data concerning long-term major clinical outcomes between male and female in dyslipidemic AMI patients after PCI with new-generation DES.
Purpose
We thought to investigate the impact of gender difference on the 2-year clinical outcomes.
Methods
Finally, a total of 2403 eligible dyslipidemic AMI patients who underwent PCI with new-generation DES were enrolled and they were separated into two groups; the male group (n=1800) and the female group (n=603). The primary endpoint was major adverse cardiac events (MACE) defined as all-cause death, recurrent myocardial infarction (re-MI), target lesion revascularization (TLR), and target vessel revascularization (TVR). The secondary endpoints were the incidence of the individual components of MACE and target vessel failure (TVF), a composite of death related to the target vessel, re-MI, or clinically driven TVR
Results
Two propensity score-matched (PSM) groups (422 pairs, n=844, C-statistic = 0.850) were generated. In the total study population, the cumulative incidences of MACE, all-cause death, re-MI, and TVF were significantly higher in the female group compared with the male group. However, after propensity score-matched (PSM) analysis, the cumulative incidences of MACE (HR, 0.971; 95% CI, 0.628–1.501; p=0.895), all-cause death (HR, 1.061; 95% CI, 0.536–2.100; p=0.865), re-MI (HR, 1.212; 95% CI, 0.433–2.907; p=0.813), and TVF (HR, 0.764; 95% CI, 0.474–1.229; p=0.267) were similar between the two groups. In addition, the cumulative incidences of cardiac death, TLR, TVR were not significantly different between the two groups (Table 1).
Outcomes Cumulative Events at 2-year (%) Hazard Ratio (95% CI) p value Male Female Log-rank Propensity score matched patients MACE 41 (10.4) 40 (10.3) 0.895 0.971 (0.628–1.501) 0.895 All-cause death 16 (4.0) 17 (4.2) 0.865 1.061 (0.536–2.100) 0.865 Cardiac death 13 (3.3) 9 (2.2) 0.391 0.691 (0.295–1.616) 0.393 Re-MI 8 (2.0) 9 (2.4) 0.813 1.212 (0.433–2.907) 0.813 TLR 7 (1.8) 6 (1.6) 0.781 0.857 (0.298–2.550) 0.781 TVR 16 (4.3) 10 (2.7) 0.236 0.623 (0.283–1.373) 0.241 TVF 39 (10.2) 30 (7.8) 0.265 0.764 (0.474–1.229) 0.267
Conclusion
The gender difference was not apparent in these dyslipidemic South Korean AMI patients who underwent PCI with new-generation DES during 2-year follow-up period.
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Affiliation(s)
- Y H Kim
- Kangwon National University School of Medicine, Chuncheon City, Korea (Republic of)
| | - A.-Y Her
- Kangwon National University School of Medicine, Chuncheon City, Korea (Republic of)
| | - M.-H Jeong
- Chonnam National University Hospital, Department of Cardiology, Gwangju, Korea (Republic of)
| | - B.-K Kim
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - S.-Y Lee
- Sanbon Hospital, Wonkwang University College of Medicine, Department of Cardiology, Gunpo, Korea (Republic of)
| | - S.-J Hong
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - D.-H Shin
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - C.-M Ahn
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - J.-S Kim
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - Y.-G Ko
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - D Choi
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - M.-K Hong
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
| | - Y Jang
- Severance Cardiovascular Hospital, Division of Cardiology, Yonsei University College of Medicine, Seoul, Korea (Republic of)
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17
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Jeon S, Jang Y, Min J, Kim D, Jeon H. Doxorubicin-loaded oligonucleotide conjugated gold nanoparticles: A promising drug delivery system for ovarian cancer. Gynecol Oncol 2019. [DOI: 10.1016/j.ygyno.2019.04.233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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18
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Zheng M, Jang Y, Choi N, Kim DY, Han TW, Yeo JH, Lee J, Sung JH. Hypoxia improves hair inductivity of dermal papilla cells via nuclear NADPH oxidase 4-mediated reactive oxygen species generation'. Br J Dermatol 2019; 181:523-534. [PMID: 30703252 DOI: 10.1111/bjd.17706] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/24/2019] [Indexed: 12/15/2022]
Abstract
BACKGROUND Dermal papilla cells (DPCs) play a key role in hair regeneration and morphogenesis. Therefore, tremendous efforts have been made to promote DPC hair inductivity. OBJECTIVES The aim of this study was to investigate the mitogenic and hair inductive effects of hypoxia on DPCs and examine the underlying mechanism of hypoxia-induced stimulation of DPCs. METHODS DPCs' hair inductivity was examined under normoxia (20% O2 ) and hypoxia (2% O2 ). RESULTS Hypoxia significantly increased the proliferation and delayed senescence of DPCs via Akt phosphorylation and downstream pathways. Hypoxia upregulated growth factor secretion of DPCs through the mitogen-activated protein kinase pathway. Hypoxia-preconditioned DPCs induced the telogen-to-anagen transition in C3 H mice, and also enhanced hair neogenesis in a hair reconstitution assay. Injected green fluorescent protein-labelled DPCs migrated to the outer root sheath of the hair follicle, and hypoxia-preconditioning increased survival and migration of DPCs in vivo. Conditioned medium obtained from hypoxia increased the hair length of mouse vibrissa follicles via upregulation of alkaline phosphatase, vascular endothelial growth factor, and glial cell line-derived neurotrophic factor. We examined the mechanism of this hypoxia-induced stimulation, and found that reactive oxygen species (ROS) play a key role. For example, inhibition of ROS generation by N-acetylcysteine or diphenyleneiodonium treatment attenuated DPCs' hypoxia-induced stimulation, but treatment with ROS donors induced mitogenic effects and anagen transition. NADPH oxidase 4 is highly expressed in the DPC nuclear region, and NOX4 knockout by CRISPR-Cas9 attenuated the hypoxia-induced stimulation of DPCs. CONCLUSIONS Our results suggest that DPC culture under hypoxia has great advantages over normoxia, and is a novel solution for producing DPCs for cell therapy. What's already known about this topic? Dermal papilla cells (DPCs) play a key role in hair regeneration and morphogenesis, but they are difficult to isolate and expand for use in cell therapy. Tremendous efforts have been made to increase proliferation of DPCs and promote their hair formation ability. What does this study add? Hypoxia (2% O2 ) culture of DPCs increases proliferation, delays senescence and enhances hair inductivity of DPCs. Reactive oxygen species play a key role in hypoxia-induced stimulation of DPC. What is the translational message? Preconditioning DPCs under hypoxia improves their hair regenerative potential, and is a novel solution for producing DPCs for cell therapy to treat hair loss.
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Affiliation(s)
- M Zheng
- STEMORE Co. Ltd, Incheon, South Korea
| | - Y Jang
- STEMORE Co. Ltd, Incheon, South Korea
| | - N Choi
- College of Pharmacy, Yonsei Institute of Pharmaceutical Sciences, Yonsei University, Incheon, South Korea
| | - D Y Kim
- College of Pharmacy, Yonsei Institute of Pharmaceutical Sciences, Yonsei University, Incheon, South Korea
| | - T W Han
- College of Pharmacy, Yonsei Institute of Pharmaceutical Sciences, Yonsei University, Incheon, South Korea
| | - J H Yeo
- College of Pharmacy, Yonsei Institute of Pharmaceutical Sciences, Yonsei University, Incheon, South Korea
| | - J Lee
- College of Pharmacy, Yonsei Institute of Pharmaceutical Sciences, Yonsei University, Incheon, South Korea
| | - J-H Sung
- STEMORE Co. Ltd, Incheon, South Korea.,College of Pharmacy, Yonsei Institute of Pharmaceutical Sciences, Yonsei University, Incheon, South Korea
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Rhee M, Jang Y. COMPLETION OF ADVANCE DIRECTIVES IN OLDER ASIAN AMERICANS: ROLE OF CULTURAL FACTORS. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.2433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- M Rhee
- University of Texas at Austin
| | - Y Jang
- The University of Texas at Austin
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Park N, Jang Y, Chung S, Chiriboga D. A COMPARATIVE STUDY OF THE ROLE OF SOCIAL NETWORKS ON DEPRESSIVE SYMPTOMS. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.2485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- N Park
- University of South Florida
| | - Y Jang
- The University of Texas at Austin
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21
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Cho Y, Hai A, Jang Y. THE IMPACT OF PERCEIVED DISCRIMINATION ON MENTAL DISTRESS IN OLDER ASIAN AMERICANS. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.1819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Y Cho
- The University of Texas at Austin
| | - A Hai
- The University of Texas at Austin
| | - Y Jang
- The University of Texas at Austin
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22
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Jang Y, Jang E. A Study of Mental Disorder Classification using Electro-cardiac Signal During Executing a Series of Mental Tasks. Int J Psychophysiol 2018. [DOI: 10.1016/j.ijpsycho.2018.07.280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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23
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Lee O, Kim K, Kim J, Kim YD, Pak H, Hong G, Chim CY, Uhm J, Cho I, Joung B, Yu C, Lee H, Kang W, Heo J, Jang Y. P3830Favorable neurological outcomes of left atrial appendage occlusion versus non-vitamin K antagonist oral anticoagulants after stroke in atrial fibrillation. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- O Lee
- Severance Hospital, Cardiology, Yongin, Korea Republic of
| | - K Kim
- Severance Hospital, Cardiology, Seoul, Korea Republic of
| | - J Kim
- Severance Hospital, Cardiology, Seoul, Korea Republic of
| | - Y D Kim
- Severance Hospital, Neurology, Seoul, Korea Republic of
| | - H Pak
- Severance Hospital, Cardiology, Seoul, Korea Republic of
| | - G Hong
- Severance Hospital, Cardiology, Seoul, Korea Republic of
| | - C Y Chim
- Severance Hospital, Cardiology, Seoul, Korea Republic of
| | - J Uhm
- Severance Hospital, Cardiology, Seoul, Korea Republic of
| | - I Cho
- Severance Hospital, Cardiology, Seoul, Korea Republic of
| | - B Joung
- Severance Hospital, Cardiology, Seoul, Korea Republic of
| | - C Yu
- Korea University Anam Hospital, Cardiology, Seoul, Korea Republic of
| | - H Lee
- Sejong General Hospital, Cardiology, Seoul, Korea Republic of
| | - W Kang
- Gil Hospital, Cardiology, Incheon, Korea Republic of
| | - J Heo
- Severance Hospital, Neurology, Seoul, Korea Republic of
| | - Y Jang
- Severance Hospital, Cardiology, Seoul, Korea Republic of
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Lee SH, Lee CJ, Lee Y, Park S, Kang SM, Choi D, Jang Y, Lee JH. P6271Variants of CETP, LIPC, and SCARB1 genes in Korean patients with very high HDL-cholesterol levels. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- S.-H Lee
- Yonsei University College of Medicine, Cardiology, Internal Medicine, Seoul, Korea Republic of
| | - C J Lee
- Yonsei University College of Medicine, Cardiology, Internal Medicine, Seoul, Korea Republic of
| | - Y Lee
- Kyung Hee University, Clinical Pharmacology and Therapeutics, Seoul, Korea Republic of
| | - S Park
- Yonsei University College of Medicine, Cardiology, Internal Medicine, Seoul, Korea Republic of
| | - S.-M Kang
- Yonsei University College of Medicine, Cardiology, Internal Medicine, Seoul, Korea Republic of
| | - D Choi
- Yonsei University College of Medicine, Cardiology, Internal Medicine, Seoul, Korea Republic of
| | - Y Jang
- Yonsei University College of Medicine, Cardiology, Internal Medicine, Seoul, Korea Republic of
| | - J H Lee
- Kyung Hee University, Clinical Pharmacology and Therapeutics, Seoul, Korea Republic of
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Park NS, Jang Y, Lee BS, Chiriboga DA, Chang S, Kim SY. Associations of a social network typology with physical and mental health risks among older adults in South Korea. Aging Ment Health 2018; 22:631-638. [PMID: 28290722 DOI: 10.1080/13607863.2017.1286456] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
OBJECTIVES The objectives of this study were to (1) develop an empirical typology of social networks in older Koreans; and (2) examine its effect on physical and mental health. METHOD A sample of 6900 community-dwelling older adults in South Korea was drawn from the 2014 Korean National Elderly Survey. Latent profile analysis (LPA) was conducted to derive social network types using eight common social network characteristics (marital status, living arrangement, the number and frequency of contact with close family/relatives, the number and frequency of contact with close friends, frequency of participation in social activities, and frequency of having visitors at home). The identified typologies were then regressed on self-rated health and depressive symptoms to explore the health risks posed by the group membership. RESULTS The LPA identified a model with five types of social network as being most optimal (BIC = 153,848.34, entropy = .90). The groups were named diverse/family (enriched networks with more engagement with family), diverse/friend (enriched networks with more engagement with friends), friend-focused (high engagement with friends), distant (structurally disengaged), and restricted (structurally engaged but disengaged in family/friends networks). A series of regression analyses showed that membership in the restricted type was associated with more health and mental health risks than all types of social networks except the distant type. CONCLUSION Findings demonstrate the importance of family and friends as a source of social network and call attention to not only structural but also non-structural aspects of social isolation. Findings and implications are discussed in cultural contexts.
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Affiliation(s)
- N S Park
- a School of Social Work, University of South Florida , Tampa , FL , USA
| | - Y Jang
- b School of Social Work, The University of Texas at Austin , Austin , TX , USA
| | - B S Lee
- c Department of Mental Health Law and Policy , University of South Florida , Tampa , FL , USA
| | - D A Chiriboga
- d Department of Child and Family Studies , University of South Florida , Tampa , FL , USA
| | - S Chang
- e Department of Social Welfare , Kyungsung University , Busan , South Korea
| | - S Y Kim
- e Department of Social Welfare , Kyungsung University , Busan , South Korea
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Jang Y, Yoon H, Park N, Chiriboga D. ORAL HEALTH AND DENTAL CARE IN OLDER ASIAN AMERICANS. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Y. Jang
- The University of Texas at Austin, Austin, Texas,
| | - H. Yoon
- The University of Texas at Austin, Austin, Texas,
| | - N.S. Park
- University of South Florida, Tampa, Florida
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Jang Y, Park N, Chiriboga D. THE KNOWING-DOING GAP IN ADVANCE DIRECTIVES IN ASIAN AMERICANS. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.2736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Y. Jang
- The University of Texas at Austin, Austin, Texas,
| | - N.S. Park
- University of South Florida, Tampa, Florida
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Jang Y. HEALTH DISPARITIES OF KOREAN AMERICAN OLDER ADULTS. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.3936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Y. Jang
- University of Texas-Austin, Austin, Texas
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Lee S, Jang Y. P18.04 IDH-1 mutation determines health-related quality of life and cognitive deficit after surgery in high grade glioma. Neuro Oncol 2017. [DOI: 10.1093/neuonc/nox036.468] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Jang Y, Ferracane JL, Pfeifer CS, Park JW, Shin Y, Roh BD. Effect of Insufficient Light Exposure on Polymerization Kinetics of Conventional and Self-adhesive Dual-cure Resin Cements. Oper Dent 2017; 42:E1-E9. [DOI: 10.2341/15-278-l] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
SUMMARY
Objectives: The purpose of this study was to investigate the influence of insufficient light exposure on the polymerization of conventional and self-adhesive dual-cure resin cements under ceramic restorations.
Methods: Two conventional dual-cure resin cements (Rely-X ARC, Duolink) and two self-adhesive resin cements (Rely-X U200, Maxcem Elite) were polymerized under different curing modes (dual-cure or self-cure), curing times (20 and 120 seconds), and thickness of a ceramic overlay (2 and 4 mm). Polymerization kinetics was measured by Fourier transform infrared spectroscopy for the initial 10 minutes and after 24 hours. Data were analyzed using mixed model analysis of variance (ANOVA), one-way ANOVA/Student-Newman-Keuls post hoc test, and paired t-test (α=0.05).
Results: When light-curing time was set to 20 seconds, the presence of the ceramic block significantly affected the degree of conversion (DC) of all resin cements. Especially, the DC of the groups with 20 seconds of light-curing time under 4 mm of ceramic thickness was even lower than that of the self-cured groups at 24 hours after polymerization (p<0.05). However, when light-curing time was set to 120 seconds, a similar DC compared with the group with direct light exposure (p>0.05) was achieved in all dual-cure groups except Maxcem Elite, at 24 hours after polymerization.
Conclusions: For both conventional and self-adhesive dual-cure resin cements, insufficient light exposure (20 seconds of light-curing time) through thick ceramic restoration (4 mm thick) resulted in a DC even lower than that of self-curing alone.
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Affiliation(s)
- Y Jang
- Youngjune Jang, DDS, PhD, Yonsei University, Department of Conservative Dentistry and Oral Science Research Center, College of Dentistry, Seoul, Republic of Korea
| | - JL Ferracane
- Jack L Ferracane, PhD, Oregon Health & Science University, Restorative Dentistry, Portland, OR, USA
| | - CS Pfeifer
- Carmem Silvia Pfeifer, DDS, PhD, Oregon Health & Science University, Restorative Dentistry, Portland, OR, USA
| | - JW Park
- Jeong-Won Park, DDS, MSD, PhD, Yonsei University, Department of Conservative Dentistry and Oral Science Research Center, College of Dentistry, Gangnam Severance Hospital, Seoul, Republic of Korea
| | - Y Shin
- Yooseok Shin, DDS, MSD, PhD, Yonsei University, Department of Conservative Dentistry and Oral Science Research Center, College of Dentistry, Seoul, Republic of Korea
| | - BD Roh
- Byoung-Duck Roh, DDS, MSD, PhD, Yonsei University, Department of Conservative Dentistry and Oral Science Research Center, College of Dentistry, Seoul, Republic of Korea
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Kim H, Kang E, Kim E, Jang Y. 117PD_PR Survival benefit of surgical removal for the primary tumor in stage IV breast cancer patients. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw577.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Kim H, Kang E, Kim E, Jang Y. 117PD_PR Survival benefit of surgical removal for the primary tumor in stage IV breast cancer patients. Ann Oncol 2016. [DOI: 10.1016/s0923-7534(21)00276-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Choi J, Lim J, Irudayanathan FM, Kim HS, Park J, Yu SB, Jang Y, Raja GCE, Nam KC, Kim J, Lee S. Cover Picture: Copper-Catalyzed Double Decarboxylative Coupling Reactions of Alkynyl Carboxylic Acid and Glyoxylic Acid: Synthesis of Propargyl Amines and Imidazopyridines (Asian J. Org. Chem. 6/2016). ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jinseop Choi
- Department of Chemistry; Chonnam National University; Gwangju 500-757 Republic of Korea
| | - Jeongah Lim
- Department of Chemistry; Chonnam National University; Gwangju 500-757 Republic of Korea
| | | | - Han-Sung Kim
- Department of Chemistry; Chonnam National University; Gwangju 500-757 Republic of Korea
| | - Jaerim Park
- Department of Chemistry; Chonnam National University; Gwangju 500-757 Republic of Korea
| | - Su Been Yu
- Department of Chemistry; Chonnam National University; Gwangju 500-757 Republic of Korea
| | - Yuna Jang
- Department of Chemistry; Chonnam National University; Gwangju 500-757 Republic of Korea
| | | | - Kye Chun Nam
- Department of Chemistry; Chonnam National University; Gwangju 500-757 Republic of Korea
| | - Jimin Kim
- Department of Chemistry; Chonnam National University; Gwangju 500-757 Republic of Korea
| | - Sunwoo Lee
- Department of Chemistry; Chonnam National University; Gwangju 500-757 Republic of Korea
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Moon J, Choi B, Kim M, Kim S, Jang Y, Cho E, Kim KH, Byun K, Chung WJ. PM301 Mesenchymal Stem Cells Attenuate Progression of Vascular Remodeling in Pulmonary Arterial Hypertension Rodent Model. Glob Heart 2016. [DOI: 10.1016/j.gheart.2016.03.423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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36
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Choi J, Lim J, Irudayanathan FM, Kim HS, Park J, Yu SB, Jang Y, Raja GCE, Nam KC, Kim J, Lee S. Copper-Catalyzed Double Decarboxylative Coupling Reactions of Alkynyl Carboxylic Acid and Glyoxylic Acid: Synthesis of Propargyl Amines and Imidazopyridines. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600109] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jinseop Choi
- Department of Chemistry; Chonnam National University; Gwangju 500-757 Republic of Korea
| | - Jeongah Lim
- Department of Chemistry; Chonnam National University; Gwangju 500-757 Republic of Korea
| | | | - Han-Sung Kim
- Department of Chemistry; Chonnam National University; Gwangju 500-757 Republic of Korea
| | - Jaerim Park
- Department of Chemistry; Chonnam National University; Gwangju 500-757 Republic of Korea
| | - Su Been Yu
- Department of Chemistry; Chonnam National University; Gwangju 500-757 Republic of Korea
| | - Yuna Jang
- Department of Chemistry; Chonnam National University; Gwangju 500-757 Republic of Korea
| | | | - Kye Chun Nam
- Department of Chemistry; Chonnam National University; Gwangju 500-757 Republic of Korea
| | - Jimin Kim
- Department of Chemistry; Chonnam National University; Gwangju 500-757 Republic of Korea
| | - Sunwoo Lee
- Department of Chemistry; Chonnam National University; Gwangju 500-757 Republic of Korea
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Yoon JK, Choi J, Lee HJ, Cho Y, Gwon YD, Jang Y, Kim S, Choi H, Lee JH, Kim YB. Distribution of Porcine Endogenous Retrovirus in Different Organs of the Hybrid of a Landrace and a Jeju Domestic Pig in Korea. Transplant Proc 2016; 47:2067-71. [PMID: 26293098 DOI: 10.1016/j.transproceed.2015.05.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Accepted: 05/22/2015] [Indexed: 01/30/2023]
Abstract
Xenotransplantation offers a solution to the shortage of available organs for transplantation, and the pig represents an ideal source of such organs. However, porcine endogenous retrovirus (PERV), whose genome is integrated in pigs, has been suggested to pose a potential risk of xenotransmission. Expression of PERVs in different organs of pigs was carefully measured at DNA, mRNA, and protein levels, providing information valuable for the application of pig organs in xenotransplantation. An analysis of PERV DNA showed that a very similar number of PERV copies was present in the genome of all organs, whereas mRNA and protein levels of PERV varied depending on the organ, with kidney, liver, and spleen expressing high levels of both mRNA and protein. In contrast, mRNA and protein levels were dissimilar in the lung and brain, where mRNA levels were low but protein levels were high. This discrepancy indicates that mRNA levels are not always reflected in protein expression. In addition, the difference between mRNA and protein highlights the importance of choosing the proper analysis method for diagnosing viral infection. In summary, this study provides insight into the distribution of PERV in various organs at the DNA, mRNA, and protein levels, and also informs the proper selection of tissues or organs for future clinical xenotransplantation.
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Affiliation(s)
- J K Yoon
- Department of Bio-industrial Technologies, Konkuk University, Seoul, Korea
| | - J Choi
- Department of Bio-industrial Technologies, Konkuk University, Seoul, Korea
| | - H J Lee
- Department of Bio-industrial Technologies, Konkuk University, Seoul, Korea
| | - Y Cho
- Department of Bio-industrial Technologies, Konkuk University, Seoul, Korea
| | - Y D Gwon
- Department of Bio-industrial Technologies, Konkuk University, Seoul, Korea
| | - Y Jang
- Department of Bio-industrial Technologies, Konkuk University, Seoul, Korea
| | - S Kim
- Department of Bio-industrial Technologies, Konkuk University, Seoul, Korea
| | - H Choi
- Department of Bio-industrial Technologies, Konkuk University, Seoul, Korea
| | - J H Lee
- College of Veterinary Medicine, Konkuk University, Seoul, Korea
| | - Y B Kim
- Department of Bio-industrial Technologies, Konkuk University, Seoul, Korea.
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Lee S, Jang Y, Lee SJ, Hohng S. Single-Molecule Multicolor FRET Assay for Studying Structural Dynamics of Biomolecules. Methods Enzymol 2016; 581:461-486. [DOI: 10.1016/bs.mie.2016.08.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Kim J, Seo J, Kim W, Yun HM, Kim SC, Jang Y, Jang K, Kim K, Kim B, Park S, Park I, Kim MK, Seo KS, Kim HB, Kim IH, Seo S, Song M. Effects of Palm Kernel Expellers on Productive Performance, Nutrient Digestibility, and White Blood Cells of Lactating Sows. Asian-Australas J Anim Sci 2015; 28:1150-4. [PMID: 26104523 PMCID: PMC4478483 DOI: 10.5713/ajas.14.0908] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Revised: 02/03/2015] [Accepted: 03/14/2015] [Indexed: 11/27/2022]
Abstract
This experiment was conducted to investigate the effects of palm kernel expellers on productive performance, nutrient digestibility, and changes in white blood cells (WBC) of lactating sows. A total of 14 sows (200±12 kg of average body weight [BW]; 2.5 of average parity) were used and moved from gestation room to farrowing room on d 109 of gestation. Sows were randomly assigned to 2 dietary treatments in a completely randomized design. The treatments were a diet based on corn and soybean meal (CON) and CON added with 20% of palm kernel expellers (PKE). Sows were fed the treatments for 28 days (weaning) after farrowing. Blood was collected from each sow and 4 randomly selected piglets from each sow before farrowing or on d 3, 7, or 14 of lactation. Sows were fed respective treatments containing 0.2% chromic oxide from d 15 to 21 of lactation. Fecal samples were collected daily for the last 3 days after the 4-d adjustment period. Measurements were performances and WBC changes of sows and litter, nutrient digestibility of sows, and daily diarrhea of litter. Sows fed PKE had greater average daily feed intake (7.38 vs 7.10 kg/d; p<0.05) and lost less BW (−6.85 vs −8.54 kg; p<0.05) and backfat depth (−0.42 vs −0.71 mm; p<0.05) than those fed CON. However, there were no differences on digestibility of dry matter, nitrogen, and energy and weaning to estrus interval of sows fed either CON or PKE. Piglets from sows fed PKE gained more BW (203 vs 181 g/d; p = 0.08) and had less frequency of diarrhea (6.80 vs 8.56%; p = 0.07) than those from sows fed CON. On the other hand, no difference was found on preweaning mortality of piglets from sows fed either CON or PKE. Sows fed PKE had lower number of WBC (9.57 vs 11.82 ×103/μL; p = 0.09) before farrowing than those fed CON, but no difference on d 3 and 7. Similarly, piglets from sows fed PKE had also lower number of WBC (7.86 vs 9.80 ×103/μL; p<0.05) on d 14 of lactation than those from sows fed CON, but no difference on d 3 and 7. In conclusion, addition of 20% palm kernel expellers to lactation diet based on corn and soybean meal had no negative effects on productive performance, nutrient digestibility, and WBC changes of lactating sows.
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Affiliation(s)
- J Kim
- Department of Animal Science, Pusan National University, Miryang 627-706, Korea
| | - J Seo
- Department of Animal Science, Pusan National University, Miryang 627-706, Korea
| | - W Kim
- Department of Animal Biosystem Sciences, Chungnam National University, Daejeon 305-764, Korea
| | - H M Yun
- Department of Animal Resource and Science, Dankook University, Cheonan 330-774, Korea
| | - S C Kim
- Department of Animal Resource and Science, Dankook University, Cheonan 330-774, Korea
| | - Y Jang
- Department of Animal Science, Pusan National University, Miryang 627-706, Korea
| | - K Jang
- Department of Animal Science, Pusan National University, Miryang 627-706, Korea
| | - K Kim
- Department of Animal Science, Pusan National University, Miryang 627-706, Korea
| | - B Kim
- Department of Animal Science, Pusan National University, Miryang 627-706, Korea
| | - S Park
- Department of Animal Science, Pusan National University, Miryang 627-706, Korea
| | - I Park
- Department of Animal Science, Pusan National University, Miryang 627-706, Korea
| | - M K Kim
- Department of Animal Science, Pusan National University, Miryang 627-706, Korea
| | - K S Seo
- Department of Animal Science and Technology, Sunchon National University, Suncheon 540-742, Korea
| | - H B Kim
- Department of Animal Resource and Science, Dankook University, Cheonan 330-774, Korea
| | - I H Kim
- Department of Animal Resource and Science, Dankook University, Cheonan 330-774, Korea
| | - S Seo
- Department of Animal Biosystem Sciences, Chungnam National University, Daejeon 305-764, Korea
| | - M Song
- Department of Animal Science, Pusan National University, Miryang 627-706, Korea
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Seo J, Kim W, Kim J, Kim JK, Kim SC, Jang Y, Jang K, Kim K, Kim B, Park S, Park I, Kim MK, Seo KS, Kim HB, Kim IH, Seo S, Song M. Effects of Palm Kernel Expellers on Growth Performance, Nutrient Digestibility, and Blood Profiles of Weaned Pigs. Asian-Australas J Anim Sci 2015; 28:987-92. [PMID: 26104403 PMCID: PMC4478508 DOI: 10.5713/ajas.14.0842] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 12/29/2014] [Accepted: 01/26/2015] [Indexed: 11/27/2022]
Abstract
This experiment was conducted to investigate the effects of palm kernel expellers on growth performance, nutrient digestibility, and blood profiles of weaned pigs. A total of 88 weaned pigs (6.94±0.76 kg body weight [BW]; 28 d old) were randomly allotted to 2 dietary treatments (4 pigs/pen; 11 replicates/treatment) in a randomized complete block design (sex as a block). The dietary treatments were a typical nursery diet based on corn and soybean meal (CON) and CON added with 20% of palm kernel expellers (PKE). Pigs were fed for 6 wk using a 3-phase feeding program with declining diet complexity and with phases of 1, 2, and 3 wk, respectively. Blood was collected from randomly selected 2 pigs in each pen before weaning and on d 7 after weaning. Pigs were fed respective dietary treatments containing 0.2% chromic oxide from d 29 to 35 after weaning. Fecal samples were collected from randomly selected 2 pigs in each pen daily for the last 3 days after the 4-d adjustment period. Measurements were growth performances, digestibility of dry matter, nitrogen and energy, white and red blood cell counts, packed cell volume, and incidence of diarrhea. The PKE increased average daily gain (ADG) (246 vs 215 g/d; p = 0.06) and average daily feed intake (ADFI) (470 vs 343 g/d; p<0.05) and decreased gain-to-feed ratio (G:F) (0.522 vs 0.628 g/g; p<0.05) during phase 2 compared with CON, but did not affect growth performance during phase 1 and 3. During overall experimental period, PKE increased ADG (383 vs 362 g/d; p = 0.05) and ADFI (549 vs 496 g/d; p<0.05) compared with CON, but did not affect G:F. However, no differences were found on digestibility of dry matter, nitrogen, and energy between CON and PKE. The PKE reduced frequency of diarrhea (15% vs 25%; p = 0.08) for the first 2 wk after weaning compared with CON. Similarly, PKE decreased white blood cells (8.19 vs 9.56×10(3)/μL; p = 0.07), red blood cells (2.92 vs 3.25×10(6)/μL; p = 0.09), and packed cell volume (11.1% vs 12.6%; p = 0.06) on d 7 after weaning compared with CON. In conclusion, addition of 20% palm kernel expellers to nursery diet based on corn and soybean meal had no negative effects on growth performance, nutrient digestibility, and blood profiles of weaned pigs.
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Affiliation(s)
- J Seo
- Department of Animal Science, Pusan National University, Miryang 627-706, Korea
| | - W Kim
- Department of Animal Biosystem Sciences, Chungnam National University, Daejeon 305-764, Korea
| | - J Kim
- Department of Animal Science, Pusan National University, Miryang 627-706, Korea
| | - J K Kim
- Department of Animal Resource and Science, Dankook University, Cheonan 330-774, Korea
| | - S C Kim
- Department of Animal Resource and Science, Dankook University, Cheonan 330-774, Korea
| | - Y Jang
- Department of Animal Science, Pusan National University, Miryang 627-706, Korea
| | - K Jang
- Department of Animal Science, Pusan National University, Miryang 627-706, Korea
| | - K Kim
- Department of Animal Science, Pusan National University, Miryang 627-706, Korea
| | - B Kim
- Department of Animal Science, Pusan National University, Miryang 627-706, Korea
| | - S Park
- Department of Animal Science, Pusan National University, Miryang 627-706, Korea
| | - I Park
- Department of Animal Science, Pusan National University, Miryang 627-706, Korea
| | - M K Kim
- Department of Animal Science, Pusan National University, Miryang 627-706, Korea
| | - K S Seo
- Department of Animal Science and Technology, Sunchon National University, Suncheon 540-742, Korea
| | - H B Kim
- Department of Animal Resource and Science, Dankook University, Cheonan 330-774, Korea
| | - I H Kim
- Department of Animal Resource and Science, Dankook University, Cheonan 330-774, Korea
| | - S Seo
- Department of Animal Biosystem Sciences, Chungnam National University, Daejeon 305-764, Korea
| | - M Song
- Department of Animal Science, Pusan National University, Miryang 627-706, Korea
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Jang Y, Cho Y, Kim S. 219. Oncological safety of nipple-areolar complex sparing mastectomy for breast cancer surgery. Eur J Surg Oncol 2014. [DOI: 10.1016/j.ejso.2014.08.213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Slattery C, Jang Y, Kruger WA, Hryciw DH, Lee A, Poronnik P. γ-Secretase inhibition promotes fibrotic effects of albumin in proximal tubular epithelial cells. Br J Pharmacol 2014; 169:1239-51. [PMID: 23594166 DOI: 10.1111/bph.12214] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2012] [Revised: 01/24/2013] [Accepted: 02/20/2013] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND AND PURPOSE Albuminuria is an important biomarker of renal dysfunction and is a major mediator of renal damage and fibrosis during kidney disease. The mechanisms underlying albumin-induced renal fibrosis remain unclear. There has been significant interest in γ-secretase activity in tubular epithelial cells in recent times; however, its potential role in albumin-induced fibrosis has not been investigated. EXPERIMENTAL APPROACH The primary aim of this study was to examine the role of γ-secretase in albumin-induced fibrotic effects in proximal tubular cells. The effects of increasing albumin concentrations on fibrosis indicators and mediators in the human HK-2 cell line were examined in the presence and absence of a γ-secretase inhibitor, compound E. KEY RESULTS Treatment with albumin resulted in a number of pro-fibrotic effects, including up-regulation of fibronectin, TGF-β1 and the EGF-R. Interestingly, similar effects were observed in response to treatment with the γ-secretase inhibitor, compound E. Co-treatment of cells with albumin and an EGF-R inhibitor, AG-1478, resulted in significant inhibition of the observed pro-fibrotic effects, suggesting a major role for the EGF-R in albumin-induced fibrotic events. Albumin-induced effects on the EGF-R appeared to be mediated through inhibition of γ-secretase activity and were dependent on ERK-MAPK signalling. CONCLUSIONS AND IMPLICATIONS These results provide novel insights into the mechanisms of albumin-induced fibrotic effects in tubular epithelial cells, suggesting important roles for the γ-secretase and the EGF-R. These results suggest that the proposed use of γ-secretase inhibitors as anti-fibrotic agents requires further investigation.
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Affiliation(s)
- C Slattery
- UCD School of Biomolecular and Biomedical Sciences, UCD Conway Institute, University College Dublin, Belfield, Ireland
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Namgung R, Mi Lee Y, Kim J, Jang Y, Lee BH, Kim IS, Sokkar P, Rhee YM, Hoffman AS, Kim WJ. Poly-cyclodextrin and poly-paclitaxel nano-assembly for anticancer therapy. Nat Commun 2014; 5:3702. [DOI: 10.1038/ncomms4702] [Citation(s) in RCA: 157] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2013] [Accepted: 03/21/2014] [Indexed: 01/06/2023] Open
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Lee JH, Lee EK, Joo WJ, Jang Y, Kim BS, Lim JY, Choi SH, Ahn SJ, Ahn JR, Park MH, Yang CW, Choi BL, Hwang SW, Whang D. Wafer-Scale Growth of Single-Crystal Monolayer Graphene on Reusable Hydrogen-Terminated Germanium. Science 2014; 344:286-9. [DOI: 10.1126/science.1252268] [Citation(s) in RCA: 714] [Impact Index Per Article: 71.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Jang Y, Lu SA, Chen ZP, Ma J, Xu CQ, Zhang CZ, Wang JJ. Genetic polymorphisms of CCND1 and PTEN in progression of esophageal squamous carcinoma. Genet Mol Res 2013; 12:6685-91. [PMID: 24391010 DOI: 10.4238/2013.december.13.2] [Citation(s) in RCA: 11] [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] [Indexed: 11/03/2022]
Abstract
Cyclin D1 (CCND1) plays a significant role in G1-S transition of cell cycle, and phosphatase and a tensin homologue (PTEN) negatively regulate cell cycle through phosphatidylinositol 3-kinase (PI3K)/AKT signaling. CCND1 and PTEN genetic polymorphisms might induce susceptibility to the occurrence of esophageal squamous cell carcinoma (ESCC). Three hundred and four ESCC patients and 413 healthy controls from Anyang, China, were enrolled in this study. All genotyping at CCND1 (807 G/A) and PTEN (rs701848 T/C and rs2735343 C/G) were identified by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) assay. Unconditional logistic regression model was used to analyze the correlation between the polymorphisms and the susceptibility to develop ESCC. Statistically significant differences were observed between cases and controls in distribution of genotypes or alleles at PTEN rs701848 T/C and rs2735343 C/G, with either haplotype TG or CG possessing notably higher proportion in cases than in the controls. However, such difference could not be found in the distribution of the polymorphisms at CCND1 807 G/A. In summary, the polymorphisms of PTEN rs701848 T/C and rs2735343 C/G might represent crucial modifying factors for development of ESCC.
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Affiliation(s)
- Y Jang
- Medical Department, People's Hospital of Lanshan District, Linyi, Shandong, China
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Lee KS, Park B, Kim JH, Kim HG, Seo JT, Lee JG, Jang Y, Choo MS. A randomised, double-blind, parallel design, multi-institutional, non-inferiority phase IV trial of imidafenacin versus fesoterodine for overactive bladder. Int J Clin Pract 2013; 67:1317-26. [PMID: 24246210 DOI: 10.1111/ijcp.12272] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2013] [Revised: 07/10/2013] [Accepted: 07/29/2013] [Indexed: 02/03/2023] Open
Abstract
AIMS Our objective was to compare the efficacy and safety of imidafenacin over fesoterodine in patients with overactive bladder (OAB). METHODS This study is a randomised, double-blind, parallel-group, fesoterodine-controlled study in patients with continuous OAB symptoms for ≥ 3 months, daily mean voiding frequency (DMVF) ≥ 8, and daily mean urgency or urgency incontinence frequency ≥ 2. A twice-daily 0.1 mg imidafenacin with placebo, or once-daily 4 mg fesoterodine with placebo were administered for 12 weeks. The primary efficacy end-point was the difference in DMVF at 12 weeks. The secondary efficacy end-points were differences in daily mean: (i) voiding frequency at 4 and 8 weeks; (ii) urgency frequency; (iii) urgency incontinence frequency; (iv) incontinence frequency; (v) nocturia frequency; and (vi) quality of life score. The variables for safety analysis were adverse events, vital signs, residual urine volume and clinical laboratory tests. An efficacy analysis was conducted in per-protocol patients and the safety analysis was conducted in all randomised patients. RESULTS The differences in DMVF at 12 weeks were -3.38 ± 3.63 and -2.45 ± 3.73 in the imidafenacin and fesoterodine groups, respectively, and the difference was not significant between the two groups. Imidafenacin was non-inferior to fesoterodine, and the lower limit of 95% two-sided confidence intervals was -0.53. The other six secondary end-points and variables for safety analysis showed no difference between the two groups. CONCLUSIONS Imidafenacin was non-inferior to fesoterodine in terms of efficacy, and showed no significant difference in terms of safety.
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Affiliation(s)
- K-S Lee
- Department of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Oh J, Kang SM, Hong N, Youn JC, Park S, Lee SH, Jang Y, Chung N. Clinical benefit of spironolactone is preserved only in low BUN group in acute heart failure patients with severe renal dysfunction: Data from the Korean Heart Failure (KorHF) registry. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht309.p3303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Won H, Ko YG, Shin DH, Kim JS, Kim BK, Choi D, Hong MK, Bae JH, Lim DS, Jang Y. Efficacy of early intensive rosuvastatin therapy in patients with ST-segment elevation myocardial infarction undergoing primary percutaneous coronary intervention: randomized, placebo-controlled. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p2268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Tsai LT, Chen CC, Jang Y, Liao KM. The meridian effect on the cortical magnification factor for visual word form identification. J Vis 2013. [DOI: 10.1167/13.9.582] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Park J, Shin DH, Kim BK, Her AY, Kim YH, Choi HH, Kim JS, Ko YG, Choi D, Jang Y, Hong MK. Relationship between aspirin/clopidogrel resistance and intra-stent thrombi assessed by follow-up optical coherence tomography after drug-eluting stent implantation. Eur Heart J Cardiovasc Imaging 2013; 14:1181-6. [DOI: 10.1093/ehjci/jet088] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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