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Huh JY, Song YJ, Park G. Rapid and Reliable HLA-B*59:01 Genotyping to Prevent Carbonic Anhydrase Inhibitor-Induced Severe Cutaneous Adverse Reactions. Ann Clin Lab Sci 2024; 54:101-105. [PMID: 38514059] [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] [Subscribe] [Scholar Register] [Indexed: 03/23/2024]
Abstract
OBJECTIVE Carbonic anhydrase inhibitors (CAIs) are intraocular pressure-reducing medications used in ophthalmology. Human leukocyte antigen-B*59:01 (HLA-B*59:01) is strongly associated with CAI-induced severe cutaneous adverse reactions (SCARs). This study aimed to develop and validate a rapid and economical screening method for HLA-B*59:01 to prevent carbonic anhydrase inhibitor-induced SCARs. METHODS Duplex allele-specific polymerase chain reaction (PCR) with an internal control was performed for HLA-B*59:01 genotyping. The accuracy of duplex allele-specific PCR for HLA-B*59:01 genotyping was evaluated in 200 blood samples, using sequence-based typing (SBT) as the reference method. RESULTS In total, 50 HLA-B*59:01-positive and 150 HLA-B*59:01-negative results obtained using duplex allele-specific PCR were in complete agreement with the SBT results. CONCLUSION Duplex allele-specific PCR is a rapid, reliable, and economical assay for screening the HLA-B*59:01 allele.
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Affiliation(s)
- Ji Young Huh
- Department of Laboratory Medicine, CHA Bundang Medical Center, Gyeonggi-do, Korea
| | | | - Geon Park
- Department of Laboratory Medicine, Chosun University College of Medicine, Gwangju, Korea
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Kang TK, Le TT, Kwon H, Park G, Kim KA, Ko H, Hong S, Lee WB, Jung SH. Lithospermum erythrorhizon Siebold & Zucc. extract reduces the severity of endotoxin-induced uveitis. Phytomedicine 2023; 121:155133. [PMID: 37812852 DOI: 10.1016/j.phymed.2023.155133] [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] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 09/21/2023] [Accepted: 10/03/2023] [Indexed: 10/11/2023]
Abstract
BACKGROUND Uveitis is an inflammatory eye condition that threatens vision, and effective anti-inflammatory treatments with minimal side effects are necessary to treat uveitis. PURPOSE This study aimed to investigate the effects of Lithospermum erythrorhizon Siebold & Zucc. against endotoxin-induced uveitis in rat and mouse models. METHODS Endotoxin-induced uveitis models of rats and mice were used to evaluate the effects of l. erythrorhizon treatment. Clinical inflammation scores and retinal thickness were assessed in the extract of l. erythrorhizon-treated rats. Histopathological examination revealed inflammatory cell infiltration into the ciliary body. Protein concentration, cellular infiltration, and prostaglandin-E2 levels were measured in the aqueous humor of the extract of l. erythrorhizon-treated rats. Protective effects of l. erythrorhizon on the anterior segment of the eye were examined in mice with endotoxin-induced uveitis. Additionally, we investigated the effect of l. erythrorhizon on the expression of pro-inflammatory cytokines [tumor necrosis factor alpha, interleukin-6, and interleukin-8] in lipopolysaccharide-stimulated THP1 human macrophages and examined the involvement of nuclear factor kappaB/activator protein 1 and interferon regulatory factor signaling pathways. Furthermore, three components of l. erythrorhizon were identified and assessed for their inhibitory effects on LPS-induced inflammation in RAW264.7 macrophage cells. RESULTS Treatment of the extract of l. erythrorhizon significantly reduced clinical inflammation scores and retinal thickening in rats with endotoxin-induced uveitis. Histopathological examination revealed decreased inflammatory cell infiltration into the ciliary body. The extract of l. erythrorhizon effectively reduced the protein concentration, cellular infiltration, and PG-E2 levels in the aqueous humor of rats with endotoxin-induced uveitis. In mice with endotoxin-induced uveitis, the extract of l. erythrorhizon demonstrated a protective effect on the anterior segment of the eye by reducing inflammation and retinal thickening. The extract of l. erythrorhizon suppressed the expression of pro-inflammatory cytokines (tumor necrosis factor alpha, interleukin-6, and interleukin-8) in lipopolysaccharide-induced inflammation in THP1 human macrophages, by modulating nuclear factor kappaB/activator protein 1 and interferon regulatory factor signaling pathways. Moreover, shikonin, acetylshikonin, and β, β-dimethylacryloylshikonin showed dose-dependent inhibition of nitric oxide, tumor necrosis factor alpha and interleukin-6 production in RAW264.7 macrophage cells. CONCLUSION The extract of l. erythrorhizon is a potential therapeutic agent for uveitis management. Administration of the extract of l. erythrorhizon led to reduced inflammation, retinal thickening, and inflammatory cell infiltration in rat and mouse models of uveitis. The compounds (shikonin, acetylshikonin, and β, β-dimethylacryloylshikonin) identified in this study played crucial roles in mediating the anti-inflammatory effects of l. erythrorhizon. These findings indicate that the extract of l. erythrorhizon and its constituent compounds are promising candidates for further research and development of novel treatment modalities for uveitis.
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Affiliation(s)
- Tae Kyeom Kang
- Natural Product Research Center, Korea Institute of Science & Technology, Gangneung 25451, Republic of Korea
| | - Tam Thi Le
- Natural Product Research Center, Korea Institute of Science & Technology, Gangneung 25451, Republic of Korea; Division of Bio-Medical Science & Technology, KIST School, Korea University of Science and Technology, Gangneung 25451, Republic of Korea
| | - Hyukjoon Kwon
- Natural Product Research Center, Korea Institute of Science & Technology, Gangneung 25451, Republic of Korea
| | - Geon Park
- Natural Product Research Center, Korea Institute of Science & Technology, Gangneung 25451, Republic of Korea
| | - Kyung-A Kim
- Division of Medical Oncology, Department of Internal Medicine, Graduate School of Medical Science Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Hyejin Ko
- Natural Product Research Center, Korea Institute of Science & Technology, Gangneung 25451, Republic of Korea
| | - Suhee Hong
- Department of Aquatic Life Medicine, Gangneung-Wonju National University, Gangneung, 25457, Republic of Korea
| | - Wook-Bin Lee
- Natural Product Research Center, Korea Institute of Science & Technology, Gangneung 25451, Republic of Korea; Division of Bio-Medical Science & Technology, KIST School, Korea University of Science and Technology, Gangneung 25451, Republic of Korea.
| | - Sang Hoon Jung
- Natural Product Research Center, Korea Institute of Science & Technology, Gangneung 25451, Republic of Korea; Division of Bio-Medical Science & Technology, KIST School, Korea University of Science and Technology, Gangneung 25451, Republic of Korea.
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Won EJ, Yi A, Ko YJ, Kim S, Kang SH, Park G, Jang SJ. Establishment of Korean Pediatric Reference Intervals for Estradiol using Ultra-High-Performance Liquid Chromatography-Tandem Mass Spectrometry. Clin Biochem 2023; 113:52-58. [PMID: 36627011 DOI: 10.1016/j.clinbiochem.2023.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 01/03/2023] [Accepted: 01/06/2023] [Indexed: 01/09/2023]
Abstract
BACKGROUND Ultra-high-performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) is a reliable and accurate method for measuring steroid hormone levels. There is an increasing need for sensitive and precise methods to measure estradiol in pediatric patients. Here, we established reference intervals for estradiol in healthy children using a UHPLC-MS/MS-based method for the first time in South Korea. METHODS Serum estradiol was measured using a Sciex Triple QuadTM 6500 + UHPLC-MS/MS (Sciex, Framingham, MA, USA). Reference intervals for estradiol were established according to the CLSI document EP28-A3c:2008. The reference intervals were validated using serum samples from 634 pediatric patients, including neonates, children, and adolescents. Among them, 389 specimens were used in analysis of the specimen acceptance time. Statistical analysis was performed using MedCalc (MedCalc, Ostend, Belgium) and Analyse-it (Analyse-it Software Ltd., Leeds, United Kingdom) software. RESULTS Reference intervals for boys (n = 297) were <16.6, <7.3, <19.0, <30.5, 7.6-96.5, and 10.6-134.4 pmol/L among those aged <1, 1-5, 6-9, 10-11, 12-14, and 15-17 years, respectively. Reference intervals for girls (n = 337) were <114.7, <24.2, <34.8, 8.0-177.0, 10.4-480.5, and 9.1-486.7 pmol/L among those aged <1, 1-5, 6-9, 10-11, 12-14, and 15-17 years, respectively. Overall, there was no effect of specimen acceptance time on estradiol measurements in boys or girls, except for that in the group aged 10-11 years. CONCLUSIONS The reference intervals for healthy children were validated using a UHPLC-MS/MS-based method. The highly analytical sensitive UHPLC-MS/MS method may be useful for estradiol determination in pediatric patients.
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Affiliation(s)
- Eun Jeong Won
- Department of Laboratory Medicine, Chonnam National University Hwasun Hospital, Hwasun, South Korea
| | - Ahram Yi
- Department of Laboratory Medicine, Green Cross Laboratories (GC Labs), Yongin, Gyeonggi, South Korea
| | - Young Jin Ko
- Department of Laboratory Medicine, College of Medicine, Chosun University, Gwangju, South Korea.
| | - Serim Kim
- Department of Laboratory Medicine, Green Cross Laboratories (GC Labs), Yongin, Gyeonggi, South Korea
| | - Seong-Ho Kang
- Department of Laboratory Medicine, College of Medicine, Chosun University, Gwangju, South Korea
| | - Geon Park
- Department of Laboratory Medicine, College of Medicine, Chosun University, Gwangju, South Korea
| | - Sook-Jin Jang
- Department of Laboratory Medicine, College of Medicine, Chosun University, Gwangju, South Korea
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Dev H, Lach R, Park G, Hanson R, Martin H, Lleshi E, Rossi S, Redmond A, Gnanapragasam V, Fitzgerald R, Stewart G, Massie C. Early detection assay using ctDNA methylation for hard-to-detect cases including prostate and renal cancer. Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00414-1] [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: 02/12/2023]
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Ko H, Park Y, Kim J, Yang G, Byun H, Kim Y, Jung W, Park G, Lee H, Hong C, Kim K, Chang J. Axillary-Lateral Thoracic Vessel Juncture Radiotherapy Dose Constraints for Predicting Long-Term Lymphedema Risk in Patients with Breast Cancer. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.342] [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: 10/31/2022]
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Park J, Cho S, Lee K, Choi E, Jung W, Kim S, Park G, Song S, Kang C, Ma M, Yoo D, Paeng K, Ock CY. 94P Performance validation of an artificial intelligence-powered programmed death-ligand 1 (PD-L1) combined positive score analyzer in urothelial cancer. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.126] [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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Kim S, Park G, Kim S, Song S, Song H, Ryu J, Park S, Pereira S, Paeng K, Ock CY. 1706P Artificial intelligence-powered tumor purity assessment from H&E whole slide images associates with variant allele frequency of somatic mutations across 23 cancer types in TCGA cohorts. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1784] [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: 11/01/2022] Open
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Cho S, Lim Y, Cho S, Kim S, Park G, Song S, Song H, Park S, Ma M, Jung W, Paeng K, Ock CY, Cho E, Song S. 155P Artificial Intelligence (AI) - powered human epidermal growth factor receptor-2 (HER2) and tumor-infiltrating lymphocytes (TIL) analysis for HER2-positive early breast cancer patients treated with HER2-targeted neoadjuvant chemotherapy (NAC). Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.190] [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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Moon J, Cho HG, Kim S, Kim S, Park G, Song S, Jung W, Ock CY. 1704P Multimodal approach to discover novel targets for antibody-drug conjugates by analyzing distinct expression patterns of frequent copy number aberration. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1782] [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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Cho HG, Kim S, Choi S, Cho S, Jung W, Kim S, Park G, Song S, Pereira S, Song H, Park S, Mostafavi M, Paeng K, Ock CY. 900P AI-powered analyzer reveals enrichment of intra-tumoral tumor-infiltrating lymphocytes in high-grade neuroendocrine neoplasms. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1026] [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: 11/15/2022] Open
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Park G, Jalkh EB, Boczar D, Bergamo ET, Kim H, Kurgansky G, Torroni A, Gil LF, Bonfante EA, Coelho PG, Witek L. Bone regeneration at extraction sockets filled with leukocyte-platelet-rich fibrin: An experimental pre-clinical study. Med Oral Patol Oral Cir Bucal 2022; 27:e468-e475. [PMID: 35975804 PMCID: PMC9445612 DOI: 10.4317/medoral.25462] [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] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 05/23/2022] [Indexed: 11/12/2022]
Abstract
Background We aimed to histomorphometrically evaluate the effects of Leucocyte-Platelet-Rich Fibrin (L-PRF), with and without the combination of a bone grafting material, for alveolar ridge preservation using an in vivo canine model. Material and Methods Seven dogs (Female Beagles, ~18-month-old) were acquired for the study. L-PRF was prepared from each individual animal by drawing venous blood and spinning them through a centrifuge at 408 RCF-clot (IntrasSpin, Intra-Lock, Boca Raton, FL). L-PRF membranes were obtained from XPression fabrication kit (Biohorizons Implant Systems, Inc., AL, USA). A split mouth approach was adopted with the first molar mesial and distal socket defects treated in an interpolated fashion of the following study groups: 1) Empty socket (negative control); 2) OSS filled defect 3) L-PRF membrane; and 4) Mix of Bio-Oss® with L-PRF. After six weeks, samples were harvested, histologically processed, and evaluated for bone area fraction occupancy (BAFO), vertical/horizontal ridge dimensions (VRD and HRD, respectively), and area of coronal soft tissue infiltration. Results BAFO was statistically lower for the control group in comparison to all treatment groups. Defects treated with Bio-Oss® were not statistically different then defects treated solely with L-PRF. Collapsed across all groups, L-PRF exhibited higher degrees of BAFO than groups without L-PRF. Defects filled with Bio-Oss® and Bio-Oss® with L-PRF demonstrated greater maintenance of VRD relative to the control group. Collapsed across all groups, Bio-Oss® maintained the VRD and resulted in less area of coronal soft tissue infiltration compared to the empty defect. Soft tissue infiltration observed at the coronal area was not statistically different among defects filled with L-PRF, Bio-Oss®, and Bio-Oss® with L-PRF. Conclusions Inclusion of L-PRF to particulate xenograft did not promote additional bone heading at 6 weeks in vivo. However, we noted that L-PRF alone promoted alveolar socket regeneration to levels comparable to particulate xenografts, suggesting its potential utilization for socket preservation. Key words:L-PRF, bone healing, socket preservation.
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Affiliation(s)
- G Park
- 433 First Avenue, Room 842 10010-4086, New York, NY, USA
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Constantin A, Caporali R, Edwards CJ, Fonseca JE, Iannone F, Keystone E, Schulze-Koops H, Kwon T, Kim S, Yoon S, Kim DH, Park G, Yoo D. AB0344 EFFICACY OF SUBCUTANEOUS INFLIXIMAB (CT-P13 SC) COMPARED WITH INTRAVENOUS INFLIXIMAB IN RHEUMATOID ARTHRITIS: A POST-HOC ANALYSIS OF A PHASE 3 RANDOMIZED CONTROLLED TRIAL. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.2225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BackgroundSubcutaneous (SC) CT-P13 is the first and only subcutaneous formulation of infliximab (IFX) approved by the EMA.1 In the pivotal study (NCT03147248), non-inferiority of SC IFX to intravenous (IV) was demonstrated in rheumatoid arthritis (RA) patients using 28-joint Disease Activity Score (DAS28) C-reactive protein (CRP) improvement at Week 22, with a statistically significant treatment difference of 0.27 (95% CI 0.02, 0.52) favoring the SC versus the IV arm.2,3 At Week 30, numerical differences in efficacy outcomes were shown between SC and IV IFX favoring SC IFX. IV group patients switched to SC IFX by Week 30, and the difference between the groups was reduced at Week 54.2ObjectivesTo investigate whether there was a statistically significant difference between SC and IV IFX at Weeks 30 and 54 in the phase 3 pivotal study of CT-P13 SC using conservative missing imputation methods.MethodsPatients with active RA who had an inadequate response to MTX received IV IFX 3mg/kg at Weeks 0 and 2 for induction and were randomized at a 1:1 ratio to receive SC IFX 120mg every 2 weeks or IV 3mg/kg every 8 weeks thereafter for maintenance. Patients who were randomized to receive IV IFX switched to SC at Week 30. In this post-hoc analysis, non-responder imputation (NRI) and last observation carried forward (LOCF) methods were used to investigate whether the difference in efficacy outcomes between SC and IV IFX at Weeks 30 and 54 was statistically significant. Assessments included EULAR (CRP/ESR)/ACR response; remission rate and low disease activity (LDA) rate based on DAS28 (CRP/ESR), Clinical Disease Activity Index (CDAI) and Simplified Disease Activity Index (SDAI); Boolean remission rate; and the proportion of patients achieving a minimal clinically important difference (MCID) in Health Assessment Questionnaire (HAQ).ResultsOf the 343 randomized patients, 165 patients who received SC IFX and 174 patients who received IV IFX from the efficacy population were included in the analysis. There was a statistically significant difference in SC IFX compared to IV treated patients at Week 30 using both NRI and LOCF methods in almost all the clinical variables. However, the difference in efficacy outcomes between SC IFX and IV was reduced at Week 54 after the IV group switched to SC. This supports the improved efficacy of SC IFX at Week 30. Some of the key results (EULAR [CRP] responses, LDA rates based on DAS28 [CRP], CDAI, and SDAI) were presented in Figure 1. Analysis using LOCF and NRI methods yielded consistent results across most of the efficacy outcomes.Figure 1.Comparison of clinical outcomes between SC IFX and IV IFX in patients with active rheumatoid arthritis.*P<0.05.P-value for difference in proportion between SC and IV treatment group was obtained by asymptotic Wald test.Low disease activity based on DAS28 (CRP) (< 3.2), CDAI (eatment group AI (≤ 11.0).ConclusionStatistical analyses using conservative missing imputation methods showed significantly greater improvements in clinical outcomes with SC IFX compared to IV at Week 30 in patients with RA. Between-group differences was reduced at Week 54, suggesting improved responses after switching from IV to SC.References[1]Remsima summary of product characteristics. https://www.ema.europa.eu/en/documents/product-information/remsima-epar-product-information_en.pdf. Published 2021. Accessed 10 January 2022.[2]Westhovens R, Wiland P, Zawadzki M, et al. Efficacy, pharmacokinetics and safety of subcutaneous versus intravenous CT-P13 in rheumatoid arthritis: a randomized phase I/III trial. Rheumatology (Oxford). 2021;60(5):2277-2287.[3]Combe B, Allanore Y, Alten R, et al. Comparative efficacy of subcutaneous (CT-P13) and intravenous infliximab in adult patients with rheumatoid arthritis: a network meta-regression of individual patient data from two randomised trials. Arthritis Res Ther. 2021;23(1):119.Disclosure of InterestsArnaud Constantin Speakers bureau: Abbvie, Amgen, Boehringer, Celltrion, Galapagos, Janssen, Lilly, Novartis, Sanofi, UCB, Consultant of: Abbvie, Amgen, Boehringer, Celltrion, Galapagos, Janssen, Lilly, Novartis, Sanofi, UCB, Roberto Caporali Speakers bureau: Abbvie, Amgen, BMS, Celltrion, Galapagos, Lilly, Pfizer, Fresenius-Kabi, MSD, UCB, Roche,Janssen, Novartis, Sandoz, Consultant of: Abbvie, Amgen, BMS, Celltrion, Galapagos, Lilly, Pfizer, MSD, UCB, Janssen, Novartis, Sandoz, Christopher John Edwards Speakers bureau: Abbvie, Astra Zeneca, Celltrion, Chugai, Fresenius, Galapagos, Gilead, GSK, Lilly, Janssen, Pfizer, Roche, Consultant of: Abbvie, Astra Zeneca, Chugai, Galapagos, Gilead, GSK, Lilly, Janssen, Pfizer, Roche, Grant/research support from: Celltrion, Pfizer, Abbvie, Joao Eurico Fonseca Speakers bureau: Abbvie, Ache, Janssen, Lilly, Medac, Novartis, Pfizer, Consultant of: Abbvie, Celltrion, Janssen, Lilly, Pfizer, Grant/research support from: Abbvie, Janssen, Lilly, MSD, Novartis, Pfizer, Roche, Florenzo Iannone Speakers bureau: Abbvie, BMS, Celltrion, Galapagos, MSD, Eli-Lilly, Janssen, Novartis, Pfizer, UCB, Consultant of: Abbvie, BMS, Celltrion, Galapagos, MSD, Eli-Lilly, Janssen, Pfizer, Grant/research support from: BMS, MSD, Edward Keystone Speakers bureau: Amgen, AbbVie, Celltrion, F. Hoffmann-La Roche Inc., Janssen Inc., Merck, Pfizer Pharmaceuticals, Sandoz, Sanofi Genzyme, Consultant of: AbbVie, Amgen, Celltrion, Myriad Autoimmune, F. Hoffmann-La Roche Inc, Janssen Inc, Lilly Pharmaceuticals, Merck, Pfizer Pharmaceuticals, Sandoz, Sanofi-Genzyme, Samsung Bioepsis, Grant/research support from: Amgen, Merck, Pfizer Pharmaceuticals, Hendrik Schulze-Koops Consultant of: Celltrion, Taeksang Kwon Employee of: Celltrion Healthcare, Seungmin Kim Employee of: Celltrion Healthcare, Sangwook Yoon Employee of: Celltrion Healthcare, Dong-Hyeon Kim Employee of: Celltrion Healthcare, Gahee Park Employee of: Celltrion Inc., DaeHyun Yoo Speakers bureau: Celltrion, Celltrion Healthcare
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Ko Y, Oh K, Kim C, Park G, Kang S, Jang S. W111 Assessment of synergistic effect of various antimicrobial combinations on extensively drug-resistant (XDR) acinetobacter baumannii clinical isolates. Clin Chim Acta 2022. [DOI: 10.1016/j.cca.2022.04.849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Kim W, Kim W, Lee H, Park G, Kang S, Youngjin K, Shin J, Won E, Lee S, Kim C, Sookjin J. W084 Assessment of a novel matrix-assisted desorption/ionization time-of-flight mass spectrometry platform, asta microidsys, for identification of various acinetobacter species, compared with bruker maldi biotyper. Clin Chim Acta 2022. [DOI: 10.1016/j.cca.2022.04.822] [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: 11/03/2022]
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Kim DK, Park G, Wang JH, Kuo LT, Park WH. Preoperative quadriceps muscle strength deficit severity predicts knee function one year after anterior cruciate ligament reconstruction. Sci Rep 2022; 12:5830. [PMID: 35388112 PMCID: PMC8986796 DOI: 10.1038/s41598-022-09816-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 03/28/2022] [Indexed: 11/09/2022] Open
Abstract
Quadriceps strength is critical for patients with anterior cruciate ligament (ACL) reconstruction; however, little is known about the relationship between preoperative quadriceps strength deficit and postoperative subjective knee functions. The study aimed to investigate the relationship between preoperative quadriceps strength and postoperative knee function in patients after ACL reconstruction. Seventy-five male patients with primary ACL reconstruction surgery with hamstring autografts between 2014 and 2017 were included. An isokinetic dynamometer assessed quadriceps strength while self-reported knee functions were measured by the International Knee Documentation Committee (IKDC) and Lysholm scores at baseline and 1 year after surgery. The three identified groups (Q1-Q3) were classified according to the preoperative quadriceps muscle strength deficit. Q1 were patients with < 25% quadriceps muscle strength deficit, Q2 showed a 25-45% deficit, and Q3 included those with a deficit > 45%. We compared knee functions between the three groups and examined the associations between preoperative variables and functional knee outcomes. The preoperative quadriceps muscle strength deficit had a negative association with the knee functional scores at 1 year follow-up including the IKDC score (rs = - 0.397, p = 0.005) and the Lysholm score (rs = - 0.454, p < 0.001), but not other factors. Furthermore, only the Q1 group, with < 25% deficit in preoperative quadriceps muscle strength, showed a significant correlation in postoperative IKDC score (r = - 0.462, p = 0.030), and Lysholm score (r = - 0.446, p = 0.038). Preoperative quadriceps muscle strength deficit had a significant negative relationship with postoperative function at 1 year following ACL reconstruction.
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Affiliation(s)
- Do Kyung Kim
- Department of Sports Medicine Center, Samsung Medical Center, School of Medicine, Sungkyunkwan University, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, South Korea
| | - Geon Park
- Department of Sports Medicine Center, Samsung Medical Center, School of Medicine, Sungkyunkwan University, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, South Korea
| | - Joon Ho Wang
- Department of Orthopaedic Surgery, Samsung Medical Center, School of Medicine, Sungkyunkwan University, Seoul, Korea
| | - Liang-Tseng Kuo
- Department of Orthopaedic Surgery, Sports Medicine Center, Chang Gung Memorial Hospital, No. 6 West Sec, Chia-Pu Road, Putz City, Chiayi, 613, Taiwan. .,Department of Medicine, Chang Gung University, Taoyüan, Taiwan.
| | - Won Hah Park
- Department of Sports Medicine Center, Samsung Medical Center, School of Medicine, Sungkyunkwan University, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, South Korea.
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Jeon HJ, Choi HS, Park JY, Yoon JY, Park G, Sim JY, Bang EJ, Kim SH, Lee KW, Lee JM, Kim ES, Keum B, Jeen YT, Lee HS, Chun HJ. Applicability of advanced endoscopic balloon-type irreversible electroporation catheter on the esophagus: Preclinical animal study. J Clin Oncol 2022. [DOI: 10.1200/jco.2022.40.4_suppl.339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
339 Background: Irreversible electroporation (IRE) is a new destructive technique that removes undesirable tissues using an electric field. Main mechanism of IRE is through the creation of permanent, nano-sized pores on the cell membranes, resulting in cell death. It poses, however, one technical challenge as contractions of smooth muscle of the gastrointestinal tract may prevent IRE from effectively electroporate the cell. The present study aims to demonstrate the applicability of this newly designed endoscopic balloon-type IRE catheter in destroying undesired tissues. Methods: The electrical field generated at 1500V with 40 pulses during ablation with the balloon-type catheter in esophagus were simulated using COMSOL Multiphysics. After a pig was anesthetized, a 0.035-inch Jagwire was inserted through the duodenum using a gastroscope. An IRE catheter was then manually advanced into the esophagus along with a guidewire. The fluoroscopy with contrast medium was employed to determine target lesions with clips. Following the sequential ablation along the esophagus, electrical parameters as well as the number of interruptions encountered were recorded. The pigs used in the experiments were sacrificed after 24 hours and tissue specimens obtained were evaluated using H&E and terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) assay. Results: Based on the COMSOL simulation, the heated portion, approximately 57 degrees of Celsius, was observed only at the edge of the electrodes. Fluoroscopy demonstrated the balloon-type catheter was not adjacent to the heart and tightly blocked the lumen of esophagus as it adheres to the mucosal layer during inflation. The IRE catheter was able to overcome muscle contractions during ablative process and deliver all electrical energy of the scheduled sequences. A total of 12 ablations were performed in three pigs, and the success rate of balloon catheter was 91.7% (11/12). Histological slides from H&E staining and TUNEL assay showed nuclei, stained brown, which indicates apoptosis at the ablation site. Conclusions: The IRE balloon-type catheter demonstrated its applicability and effectiveness as an electroporation-based treatment in esophagus as validated in the experimental results. Further studies regarding electrodes improvement to heat-free condition and its safety related assessment would be needed.
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Affiliation(s)
- Han Jo Jeon
- Korea University Anam Hospital, Seoul, South Korea
| | | | | | | | - Geon Park
- Korea University Anam Hospital, Seoul, South Korea
| | | | - Eun Joo Bang
- Korea University Anam Hosspital, Seoul, South Korea
| | | | - Kang Won Lee
- Korea University Anam Hospital, Seoul, South Korea
| | - Jae Min Lee
- Korea University Anam Hospital, Seoul, South Korea
| | - Eun Sun Kim
- Korea University Anam Hospital, Seoul, South Korea
| | - Bora Keum
- Korea University Anam Hospital, Seoul, South Korea
| | | | - Hong Sik Lee
- Korea University Anam Hospital, Seoul, South Korea
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17
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Ko YJ, Lee OJ, Lee SB, Kim CM, Lee J, Kook JK, Park SN, Shin JH, Kim SH, Won EJ, Park G, Kang SH, Jang SJ. Accuracy of ASTA MicroIDSys, a New Matrix-Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometry System, for the Identification of Korean Reference and Clinical Bacterial and Yeast Strains. Diagn Microbiol Infect Dis 2022; 103:115658. [DOI: 10.1016/j.diagmicrobio.2022.115658] [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] [Received: 09/28/2021] [Revised: 01/17/2022] [Accepted: 01/22/2022] [Indexed: 11/03/2022]
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18
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Lee OJ, Ko YJ, Lee SB, Kim CM, Jang SJ, Kook JK, Lim YK, Shin JH, Shin MG, Kee SJ, Jeong SH, Kang SH, Park G. Performance assessment of ASTA MicroIDSys, a new matrix assisted laser desorption ionization-time of flight mass spectrometry system, for identification of viridans group streptococci. Microbiol Immunol 2021; 65:566-574. [PMID: 34516008 DOI: 10.1111/1348-0421.12942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 08/30/2021] [Accepted: 09/10/2021] [Indexed: 11/29/2022]
Abstract
The performance of the ASTA MicroIDSys system (ASTA, Suwon, South Korea), a new matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS) system, was evaluated for the identification of viridans group streptococci (VGS) and compared with the results obtained with the Bruker Biotyper system (Bruker Daltonics, Hamburg, Germany). A total of 106 Streptococcus reference strains belonging to 24 species from the bacterial strain bank was analyzed using the two MALDI-TOF MS systems. Of the 106 reference strains tested, ASTA MicroIDSys and Bruker Biotyper correctly identified 84.9% and 81.1% at the species level, 100% and 97.2% at the group level and 100% and 98.1% at the genus level, respectively. The difference between the two systems was not statistically significant (P = 0.289). Out of 24 species, 13 species were accurately identified to the species level with 100% accurate identification rates with both systems. The accurate identification rates at the species level of ASTA MicroIDSys and Bruker Biotyper were 100% and 87.5% for the S. anginosus group; 78.4% and 73.5% for the S. mitis group; 91.7% and 91.7% for the S. mutans group; and 100% and 100% for the S. salivarius group, respectively. The ASTA MicroIDSys showed an identification performance equivalent to that of the Bruker Biotyper for VGS. Therefore, it would be useful for the identification of VGS strains in clinical microbiology laboratories. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- O-Jin Lee
- Department of Laboratory Medicine, Green Cross Laboratories, Yongin, Republic of Korea
| | - Young Jin Ko
- Department of Laboratory Medicine, School of Medicine, Chosun University, Gwangju, Republic of Korea
| | - Seul-Bi Lee
- Department of Laboratory Medicine, School of Medicine, Chosun University, Gwangju, Republic of Korea
| | - Choon Mee Kim
- Premedical Science, College of Medicine, Chosun University, Gwangju, Republic of Korea
| | - Sook-Jin Jang
- Department of Laboratory Medicine, School of Medicine, Chosun University, Gwangju, Republic of Korea
| | - Joong-Ki Kook
- Korean Collection for Oral Microbiology and Department of Oral Biochemistry, College of Dentistry, Chosun University, Gwangju, Republic of Korea
| | - Yun Kyong Lim
- Korean Collection for Oral Microbiology and Department of Oral Biochemistry, College of Dentistry, Chosun University, Gwangju, Republic of Korea
| | - Jong Hee Shin
- Department of Laboratory Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Myung Geun Shin
- Department of Laboratory Medicine, Chonnam National University Medical School and Chonnam National University Hwasun Hospital, Hwasun, Republic of Korea
| | - Seung Jung Kee
- Department of Laboratory Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Seok Hoon Jeong
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Republic of Korea
| | - Seong-Ho Kang
- Department of Laboratory Medicine, School of Medicine, Chosun University, Gwangju, Republic of Korea
| | - Geon Park
- Department of Laboratory Medicine, School of Medicine, Chosun University, Gwangju, Republic of Korea
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19
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Park G, Chun H, Jeon H, Choi H, Kim E, Keum B, Jeen Y, Lee J. P-248 Determination of the optimal electrical field for apoptosis in the rat stomach during irreversible electroporation. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.05.302] [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: 12/01/2022] Open
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20
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Rossi S, Newsham I, Pita S, Park G, Lach R, Babbage A, Smith C, Brennan K, Mitchell T, Warren A, Gevaert O, Leppert J, Stewart G, Massie C, Samarajiwa S. Accurate differentiation of renal tumour pathological subtypes using a machine learning model of epigenetic markers. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)00971-4] [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: 11/28/2022]
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21
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Kim CM, Park G, Ko YJ, Kang SH, Jang SJ. Relationships between relative expression of RND efflux pump genes, H33342 efflux activity, biofilm-forming activity, and antimicrobial resistance in Acinetobacter baumannii clinical isolates. Jpn J Infect Dis 2021; 74:499-506. [PMID: 33642430 DOI: 10.7883/yoken.jjid.2020.765] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Various mechanisms underlying antimicrobial resistance in Acinetobacter baumannii have been reported. There exists controversy regarding the relationships between efflux pump activity, biofilm formation, and antimicrobial resistance in A. baumannii. In this study, we investigated the relative expression of RND efflux pump genes, H33342 efflux activity, and biofilm-forming activity in 120 A. baumannii clinical isolates, examined their potential relationships with one another, and then statistically analyzed their effects on antibiotic resistance. High adeB expression and high H33342 efflux activity were correlated with low biofilm-forming activity. High adeB expression was significantly correlated with resistance to tigecycline and cefotaxime, but not with the multidrug resistance (MDR) phenotype. Importantly, only high adeJ expression was significantly correlated with the MDR phenotype, and was observed to be correlated with resistance to various antibiotics. However, we found no significant correlation between adeJ expression and biofilm-forming activity. Further, adeG expression was found to not be correlated with antibiotic resistance and biofilm-forming activity. The results of multivariate analysis showed that adeB overexpression and high H33342 efflux activity are related to biofilm-forming activity, and only adeJ overexpression is significantly associated with the MDR phenotype, highlighting the importance of adeJ overexpression.
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Affiliation(s)
- Choon-Mee Kim
- Premedical Science, College of Medicine, Chosun University, Republic of Korea
| | - Geon Park
- Department of Laboratory Medicine, School of Medicine, Chosun University, Republic of Korea
| | - Young Jin Ko
- Department of Laboratory Medicine, School of Medicine, Chosun University, Republic of Korea
| | - Seong-Ho Kang
- Department of Laboratory Medicine, School of Medicine, Chosun University, Republic of Korea
| | - Sook Jin Jang
- Department of Laboratory Medicine, School of Medicine, Chosun University, Republic of Korea
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22
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Acharya A, Agarwal R, Baker M, Baudry J, Bhowmik D, Boehm S, Byler KG, Chen S, Coates L, Cooper C, Demerdash O, Daidone I, Eblen J, Ellingson S, Forli S, Glaser J, Gumbart JC, Gunnels J, Hernandez O, Irle S, Kneller D, Kovalevsky A, Larkin J, Lawrence T, LeGrand S, Liu SH, Mitchell J, Park G, Parks J, Pavlova A, Petridis L, Poole D, Pouchard L, Ramanathan A, Rogers D, Santos-Martins D, Scheinberg A, Sedova A, Shen Y, Smith J, Smith M, Soto C, Tsaris A, Thavappiragasam M, Tillack A, Vermaas J, Vuong V, Yin J, Yoo S, Zahran M, Zanetti-Polzi L. Supercomputer-Based Ensemble Docking Drug Discovery Pipeline with Application to Covid-19. J Chem Inf Model 2020; 60:5832-5852. [PMID: 33326239 PMCID: PMC7754786 DOI: 10.1021/acs.jcim.0c01010] [Citation(s) in RCA: 109] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Indexed: 01/18/2023]
Abstract
We present a supercomputer-driven pipeline for in silico drug discovery using enhanced sampling molecular dynamics (MD) and ensemble docking. Ensemble docking makes use of MD results by docking compound databases into representative protein binding-site conformations, thus taking into account the dynamic properties of the binding sites. We also describe preliminary results obtained for 24 systems involving eight proteins of the proteome of SARS-CoV-2. The MD involves temperature replica exchange enhanced sampling, making use of massively parallel supercomputing to quickly sample the configurational space of protein drug targets. Using the Summit supercomputer at the Oak Ridge National Laboratory, more than 1 ms of enhanced sampling MD can be generated per day. We have ensemble docked repurposing databases to 10 configurations of each of the 24 SARS-CoV-2 systems using AutoDock Vina. Comparison to experiment demonstrates remarkably high hit rates for the top scoring tranches of compounds identified by our ensemble approach. We also demonstrate that, using Autodock-GPU on Summit, it is possible to perform exhaustive docking of one billion compounds in under 24 h. Finally, we discuss preliminary results and planned improvements to the pipeline, including the use of quantum mechanical (QM), machine learning, and artificial intelligence (AI) methods to cluster MD trajectories and rescore docking poses.
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Affiliation(s)
- A. Acharya
- School of Physics, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - R. Agarwal
- UT/ORNL Center for Molecular Biophysics, Oak Ridge National Laboratory, TN, 37830, USA
- The University of Tennessee, Knoxville. Department of Biochemistry & Cellular and Molecular Biology, 309 Ken and Blaire Mossman Bldg. 1311 Cumberland Avenue Knoxville, TN, 37996, USA
- Graduate School of Genome Science and Technology, University of Tennessee, Knoxville, TN, 37996, USA
| | - M. Baker
- Computer Science and Mathematics Division, Oak Ridge National Lab, Oak Ridge, TN 37830, USA
| | - J. Baudry
- The University of Alabama in Huntsville, Department of Biological Sciences. 301 Sparkman Drive, Huntsville, AL 35899, USA
| | - D. Bhowmik
- Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - S. Boehm
- Computer Science and Mathematics Division, Oak Ridge National Lab, Oak Ridge, TN 37830, USA
| | - K. G. Byler
- The University of Alabama in Huntsville, Department of Biological Sciences. 301 Sparkman Drive, Huntsville, AL 35899, USA
| | - S.Y. Chen
- Computational Science Initiative, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - L. Coates
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - C.J. Cooper
- UT/ORNL Center for Molecular Biophysics, Oak Ridge National Laboratory, TN, 37830, USA
- Graduate School of Genome Science and Technology, University of Tennessee, Knoxville, TN, 37996, USA
| | - O. Demerdash
- Biosciences Division, Oak Ridge National Lab, Oak Ridge, TN 37830, USA
| | - I. Daidone
- Department of Physical and Chemical Sciences, University of L’Aquila, I-67010 L’Aquila, Italy
| | - J.D. Eblen
- UT/ORNL Center for Molecular Biophysics, Oak Ridge National Laboratory, TN, 37830, USA
- The University of Tennessee, Knoxville. Department of Biochemistry & Cellular and Molecular Biology, 309 Ken and Blaire Mossman Bldg. 1311 Cumberland Avenue Knoxville, TN, 37996, USA
| | - S. Ellingson
- University of Kentucky, Division of Biomedical Informatics, College of Medicine, UK Medical Center MN 150, Lexington KY, 40536, USA
| | - S. Forli
- Scripps Research, La Jolla, CA, 92037, USA
| | - J. Glaser
- National Center for Computational Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA
| | - J. C. Gumbart
- School of Physics, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - J. Gunnels
- HPC Engineering, Amazon Web Services, Seattle, WA 98121, USA
| | - O. Hernandez
- Computer Science and Mathematics Division, Oak Ridge National Lab, Oak Ridge, TN 37830, USA
| | - S. Irle
- Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
- Bredesen Center for Interdisciplinary Research and Graduate Education, University of Tennessee, Knoxville, TN 37996, USA
| | - D.W. Kneller
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - A. Kovalevsky
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - J. Larkin
- NVIDIA Corporation, Santa Clara, CA 95051, USA
| | - T.J. Lawrence
- Biosciences Division, Oak Ridge National Lab, Oak Ridge, TN 37830, USA
| | - S. LeGrand
- NVIDIA Corporation, Santa Clara, CA 95051, USA
| | - S.-H. Liu
- UT/ORNL Center for Molecular Biophysics, Oak Ridge National Laboratory, TN, 37830, USA
- The University of Tennessee, Knoxville. Department of Biochemistry & Cellular and Molecular Biology, 309 Ken and Blaire Mossman Bldg. 1311 Cumberland Avenue Knoxville, TN, 37996, USA
| | - J.C. Mitchell
- Biosciences Division, Oak Ridge National Lab, Oak Ridge, TN 37830, USA
| | - G. Park
- Computational Science Initiative, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - J.M. Parks
- UT/ORNL Center for Molecular Biophysics, Oak Ridge National Laboratory, TN, 37830, USA
- The University of Tennessee, Knoxville. Department of Biochemistry & Cellular and Molecular Biology, 309 Ken and Blaire Mossman Bldg. 1311 Cumberland Avenue Knoxville, TN, 37996, USA
- Graduate School of Genome Science and Technology, University of Tennessee, Knoxville, TN, 37996, USA
| | - A. Pavlova
- School of Physics, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - L. Petridis
- UT/ORNL Center for Molecular Biophysics, Oak Ridge National Laboratory, TN, 37830, USA
- The University of Tennessee, Knoxville. Department of Biochemistry & Cellular and Molecular Biology, 309 Ken and Blaire Mossman Bldg. 1311 Cumberland Avenue Knoxville, TN, 37996, USA
| | - D. Poole
- NVIDIA Corporation, Santa Clara, CA 95051, USA
| | - L. Pouchard
- Computational Science Initiative, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - A. Ramanathan
- Data Science and Learning Division, Argonne National Lab, Lemont, IL 60439, USA
| | - D. Rogers
- National Center for Computational Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA
| | | | | | - A. Sedova
- Biosciences Division, Oak Ridge National Lab, Oak Ridge, TN 37830, USA
| | - Y. Shen
- UT/ORNL Center for Molecular Biophysics, Oak Ridge National Laboratory, TN, 37830, USA
- The University of Tennessee, Knoxville. Department of Biochemistry & Cellular and Molecular Biology, 309 Ken and Blaire Mossman Bldg. 1311 Cumberland Avenue Knoxville, TN, 37996, USA
- Graduate School of Genome Science and Technology, University of Tennessee, Knoxville, TN, 37996, USA
| | - J.C. Smith
- UT/ORNL Center for Molecular Biophysics, Oak Ridge National Laboratory, TN, 37830, USA
- The University of Tennessee, Knoxville. Department of Biochemistry & Cellular and Molecular Biology, 309 Ken and Blaire Mossman Bldg. 1311 Cumberland Avenue Knoxville, TN, 37996, USA
| | - M.D. Smith
- UT/ORNL Center for Molecular Biophysics, Oak Ridge National Laboratory, TN, 37830, USA
- The University of Tennessee, Knoxville. Department of Biochemistry & Cellular and Molecular Biology, 309 Ken and Blaire Mossman Bldg. 1311 Cumberland Avenue Knoxville, TN, 37996, USA
| | - C. Soto
- Computational Science Initiative, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - A. Tsaris
- National Center for Computational Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA
| | | | | | - J.V. Vermaas
- National Center for Computational Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA
| | - V.Q. Vuong
- Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
- Bredesen Center for Interdisciplinary Research and Graduate Education, University of Tennessee, Knoxville, TN 37996, USA
| | - J. Yin
- National Center for Computational Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA
| | - S. Yoo
- Computational Science Initiative, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - M. Zahran
- Department of Biological Sciences, New York City College of Technology, The City University of New York (CUNY), Brooklyn, NY 11201, USA
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23
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Acharya A, Agarwal R, Baker M, Baudry J, Bhowmik D, Boehm S, Byler KG, Coates L, Chen SY, Cooper CJ, Demerdash O, Daidone I, Eblen JD, Ellingson S, Forli S, Glaser J, Gumbart JC, Gunnels J, Hernandez O, Irle S, Larkin J, Lawrence TJ, LeGrand S, Liu SH, Mitchell JC, Park G, Parks JM, Pavlova A, Petridis L, Poole D, Pouchard L, Ramanathan A, Rogers D, Santos-Martins D, Scheinberg A, Sedova A, Shen S, Smith JC, Smith MD, Soto C, Tsaris A, Thavappiragasam M, Tillack AF, Vermaas JV, Vuong VQ, Yin J, Yoo S, Zahran M, Zanetti-Polzi L. Supercomputer-Based Ensemble Docking Drug Discovery Pipeline with Application to Covid-19. ChemRxiv 2020:12725465. [PMID: 33200117 PMCID: PMC7668744 DOI: 10.26434/chemrxiv.12725465] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Revised: 07/29/2020] [Indexed: 01/18/2023]
Abstract
We present a supercomputer-driven pipeline for in-silico drug discovery using enhanced sampling molecular dynamics (MD) and ensemble docking. We also describe preliminary results obtained for 23 systems involving eight protein targets of the proteome of SARS CoV-2. THe MD performed is temperature replica-exchange enhanced sampling, making use of the massively parallel supercomputing on the SUMMIT supercomputer at Oak Ridge National Laboratory, with which more than 1ms of enhanced sampling MD can be generated per day. We have ensemble docked repurposing databases to ten configurations of each of the 23 SARS CoV-2 systems using AutoDock Vina. We also demonstrate that using Autodock-GPU on SUMMIT, it is possible to perform exhaustive docking of one billion compounds in under 24 hours. Finally, we discuss preliminary results and planned improvements to the pipeline, including the use of quantum mechanical (QM), machine learning, and AI methods to cluster MD trajectories and rescore docking poses.
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Affiliation(s)
- A Acharya
- School of Physics, Georgia Institute of Technology, Atlanta, GA 30332
| | - R Agarwal
- UT/ORNL Center for Molecular Biophysics, Oak Ridge National Laboratory, TN, 37830
- The University of Tennessee, Knoxville. Department of Biochemistry & Cellular and Molecular Biology, 309 Ken and Blaire Mossman Bldg. 1311 Cumberland Avenue Knoxville, TN, 37996
- Graduate School of Genome Science and Technology, University of Tennessee, Knoxville, TN, 37996
| | - M Baker
- Computer Science and Mathematics Division, Oak Ridge National Lab, Oak Ridge, TN 37830
| | - J Baudry
- The University of Alabama in Huntsville, Department of Biological Sciences. 301 Sparkman Drive, Huntsville, AL 35899
| | - D Bhowmik
- Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831
| | - S Boehm
- Computer Science and Mathematics Division, Oak Ridge National Lab, Oak Ridge, TN 37830
| | - K G Byler
- The University of Alabama in Huntsville, Department of Biological Sciences. 301 Sparkman Drive, Huntsville, AL 35899
| | - L Coates
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831
| | - S Y Chen
- Computational Science Initiative, Brookhaven National Laboratory, Upton, NY 11973
| | - C J Cooper
- UT/ORNL Center for Molecular Biophysics, Oak Ridge National Laboratory, TN, 37830
- Graduate School of Genome Science and Technology, University of Tennessee, Knoxville, TN, 37996
| | - O Demerdash
- Biosciences Division, Oak Ridge National Lab, Oak Ridge, TN 37830
| | - I Daidone
- Department of Physical and Chemical Sciences, University of L'Aquila, I-67010 L'Aquila, Italy
| | - J D Eblen
- UT/ORNL Center for Molecular Biophysics, Oak Ridge National Laboratory, TN, 37830
- The University of Tennessee, Knoxville. Department of Biochemistry & Cellular and Molecular Biology, 309 Ken and Blaire Mossman Bldg. 1311 Cumberland Avenue Knoxville, TN, 37996
| | - S Ellingson
- University of Kentucky, Division of Biomedical Informatics, College of Medicine, UK Medical Center MN 150, Lexington KY, 40536
| | - S Forli
- Scripps Research, La Jolla, CA, 92037
| | - J Glaser
- National Center for Computational Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37830
| | - J C Gumbart
- School of Physics, Georgia Institute of Technology, Atlanta, GA 30332
| | - J Gunnels
- HPC Engineering, Amazon Web Services, Seattle, WA 98121
| | - O Hernandez
- Computer Science and Mathematics Division, Oak Ridge National Lab, Oak Ridge, TN 37830
| | - S Irle
- Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831
- Bredesen Center for Interdisciplinary Research and Graduate Education, University of Tennessee, Knoxville, TN 37996
| | - J Larkin
- NVIDIA Corporation, Santa Clara, CA 95051
| | - T J Lawrence
- Biosciences Division, Oak Ridge National Lab, Oak Ridge, TN 37830
| | - S LeGrand
- NVIDIA Corporation, Santa Clara, CA 95051
| | - S-H Liu
- UT/ORNL Center for Molecular Biophysics, Oak Ridge National Laboratory, TN, 37830
- The University of Tennessee, Knoxville. Department of Biochemistry & Cellular and Molecular Biology, 309 Ken and Blaire Mossman Bldg. 1311 Cumberland Avenue Knoxville, TN, 37996
| | - J C Mitchell
- Biosciences Division, Oak Ridge National Lab, Oak Ridge, TN 37830
| | - G Park
- Computational Science Initiative, Brookhaven National Laboratory, Upton, NY 11973
| | - J M Parks
- UT/ORNL Center for Molecular Biophysics, Oak Ridge National Laboratory, TN, 37830
- The University of Tennessee, Knoxville. Department of Biochemistry & Cellular and Molecular Biology, 309 Ken and Blaire Mossman Bldg. 1311 Cumberland Avenue Knoxville, TN, 37996
- Graduate School of Genome Science and Technology, University of Tennessee, Knoxville, TN, 37996
| | - A Pavlova
- School of Physics, Georgia Institute of Technology, Atlanta, GA 30332
| | - L Petridis
- UT/ORNL Center for Molecular Biophysics, Oak Ridge National Laboratory, TN, 37830
- The University of Tennessee, Knoxville. Department of Biochemistry & Cellular and Molecular Biology, 309 Ken and Blaire Mossman Bldg. 1311 Cumberland Avenue Knoxville, TN, 37996
| | - D Poole
- NVIDIA Corporation, Santa Clara, CA 95051
| | - L Pouchard
- Computational Science Initiative, Brookhaven National Laboratory, Upton, NY 11973
| | - A Ramanathan
- Data Science and Learning Division, Argonne National Lab, Lemont, IL 60439
| | - D Rogers
- National Center for Computational Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37830
| | | | | | - A Sedova
- Biosciences Division, Oak Ridge National Lab, Oak Ridge, TN 37830
| | - S Shen
- UT/ORNL Center for Molecular Biophysics, Oak Ridge National Laboratory, TN, 37830
- The University of Tennessee, Knoxville. Department of Biochemistry & Cellular and Molecular Biology, 309 Ken and Blaire Mossman Bldg. 1311 Cumberland Avenue Knoxville, TN, 37996
- Graduate School of Genome Science and Technology, University of Tennessee, Knoxville, TN, 37996
| | - J C Smith
- UT/ORNL Center for Molecular Biophysics, Oak Ridge National Laboratory, TN, 37830
- The University of Tennessee, Knoxville. Department of Biochemistry & Cellular and Molecular Biology, 309 Ken and Blaire Mossman Bldg. 1311 Cumberland Avenue Knoxville, TN, 37996
| | - M D Smith
- UT/ORNL Center for Molecular Biophysics, Oak Ridge National Laboratory, TN, 37830
- The University of Tennessee, Knoxville. Department of Biochemistry & Cellular and Molecular Biology, 309 Ken and Blaire Mossman Bldg. 1311 Cumberland Avenue Knoxville, TN, 37996
| | - C Soto
- Computational Science Initiative, Brookhaven National Laboratory, Upton, NY 11973
| | - A Tsaris
- National Center for Computational Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37830
| | | | | | - J V Vermaas
- National Center for Computational Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37830
| | - V Q Vuong
- Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831
- Bredesen Center for Interdisciplinary Research and Graduate Education, University of Tennessee, Knoxville, TN 37996
| | - J Yin
- National Center for Computational Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37830
| | - S Yoo
- Computational Science Initiative, Brookhaven National Laboratory, Upton, NY 11973
| | - M Zahran
- Department of Biological Sciences, New York City College of Technology, The City University of New York (CUNY), Brooklyn, NY 11201
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Lamagna C, Chan M, Bagos A, Tai E, Young C, Chen Y, Chou L, Park G, Masuda E, Taylor V. OP0046 TARGETING IRAK1 AND 4 SIGNALING WITH R835, A NOVEL ORAL SMALL MOLECULE INHIBITOR: A POTENTIAL NEW TREATMENT FOR SYSTEMIC LUPUS ERYTHEMATOSUS. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.3739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Abstract
Background:Systemic lupus erythematosus (SLE) is a complex autoimmune disease characterized by loss of immunological tolerance, hyperactivation of immune cells, proinflammatory cytokine production and, ultimately, end organ damage due to immune complex deposition. Toll-like receptors (TLRs), which are essential to the innate immune response to microbes and other danger signals, play a key role in the pathogenesis of SLE by recognition of self-molecules (1). Interleukin receptor associated kinases (IRAK)1 and 4 are responsible for initiating MyD88-dependent signaling from most TLRs and Interleukin-1 Receptors (IL-1R) and represent attractive targets for the therapeutic treatment of SLE (2). We have identified a potent and selective IRAK1/4 inhibitor, R835, that substantially suppressed the elevation of LPS (TLR4 agonist)-induced serum cytokines in healthy human volunteers in a recently completed phase 1 study.Objectives:The aim of our study was to investigate the effect of IRAK1/4 selective inhibition as potential therapeutic approach for SLE. We evaluated the effect of our clinical candidate R835 on TLR7 signaling and in a mouse model of lupus-like disease.Methods:Human primary dendritic cells and whole blood were stimulated with gardiquimod (TLR7 agonist) to evaluate the effect of R835 on Interferon-alpha (IFN-α) production. R835 was further evaluated for its efficacy on survival and disease progression in lupus-prone NZB/W F1 mice with early or active signs of disease.Results:R835 inhibited TLR7-induced cytokine production in human dendritic cells and whole blood. Given orally to mice, R835 dose-dependently decreased serum IFN-α in response to administration of a TLR7 agonist. Furthermore, treatment of NZB/W F1 lupus-prone mice with R835 reversed the progression of lupus-like disease and the establishment of a pro-inflammatory environment, as demonstrated by decreased levels of proteinuria, blood urea nitrogen and autoantibodies, and reversal of renal pathology.Conclusion:To our knowledge, R835 is the first dual IRAK1/4 inhibitor to enter clinical development and provides an attractive approach to treat a range of autoimmune and rheumatic diseases, including lupus.References:[1]Signals via the Adaptor MyD88 in B cells and DCs Make Distinct and Synergistic Contributions to Immune Activation and Tissue Damage in Lupus. Lino L. Teichmann, Dominik Schenten, Ruslan Medzhitov, Michael Kashgarian, and Mark J. Shlomchik. Immunity. 2013 March 21; 38(3): 528–540.[2]Suppression of IRAK1 or IRAK4 Catalytic Activity, but Not Type 1 IFN Signaling, Prevents Lupus Nephritis in Mice Expressing a Ubiquitin Binding-Defective Mutant of ABIN1. Nanda SK, Lopez-Pelaez M, Arthur JS, Marchesi F, Cohen P. J Immunol. 2016 Dec 1;197(11):4266-4273.Disclosure of Interests:Chrystelle Lamagna Shareholder of: Rigel Pharmaceuticals, Employee of: Rigel Pharmaceuticals, Meagan Chan Shareholder of: Rigel Pharmaceuticals, Employee of: Rigel Pharmaceuticals, Art Bagos Shareholder of: Rigel Pharmaceuticals, Employee of: Rigel Pharmaceuticals, Ernest Tai Shareholder of: Rigel Pharmaceuticals, Employee of: Rigel Pharmaceuticals, Chi Young Shareholder of: Rigel Pharmaceuticals, Employee of: Rigel Pharmaceuticals, Yan Chen Shareholder of: Rigel Pharmaceuticals, Employee of: Rigel Pharmaceuticals, Lu Chou Shareholder of: Rigel Pharmaceuticals, Employee of: Rigel Pharmaceuticals, Gary Park Shareholder of: Rigel Pharmaceuticals, Employee of: Rigel Pharmaceuticals, Esteban Masuda Shareholder of: Rigel Pharmaceuticals, Employee of: Rigel Pharmaceuticals, Vanessa Taylor Shareholder of: Rigel Pharmaceuticals, Employee of: Rigel Pharmaceuticals
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Lamagna C, Chan M, Tai E, Siu S, Frances R, Yi S, Young C, Markovtsov V, Chen Y, Chou L, Park G, Masuda E, Taylor V. OP0133 PRECLINICAL EFFICACY OF R835, A NOVEL IRAK1/4 DUAL INHIBITOR, IN RODENT MODELS OF JOINT INFLAMMATION. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.1901] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Interleukin receptor associated kinases (IRAK) 1 and 4 are kinases involved in Toll-Like Receptor (TLR) and Interleukin-1 Receptor (IL-1R) signaling pathways, which regulate innate immunity and inflammation. Dysregulation of IRAK1/4 signaling can lead to a variety of inflammatory conditions including rheumatoid and gouty arthritis. As a result, IRAK1/4 are promising therapeutic targets for rheumatic diseases (1). We have identified a potent and selective IRAK1/4 inhibitor, R835, that substantially suppressed the elevation of LPS (TLR4 agonist)-induced serum cytokines in healthy human volunteers in a recently completed phase 1 study.Objectives:The aim of our study was to investigate the effect of IRAK1/4 selective inhibition as a potential therapeutic approach for rheumatological diseases. We evaluated the inhibition by our clinical candidate, R835, on TLR-, IL-1R- and NLRP3 inflammasome-induced cytokine production, as well as in preclinical models of arthritis.Methods:The effect of R835 on TLR- or IL-1R-induced cytokine production was evaluated in vitro using THP-1, human primary endothelial cells and human primary dendritic cells. The activity of R835 on the NLRP3 inflammasome was also tested in vitro using THP-1 cells. The pharmacokinetic-pharmacodynamic relationship of R835 was evaluated in a mouse model of IL-1b-induced cytokine release. Mice were pre-treated orally with vehicle or R835 prior to challenge; serum cytokine and plasma compound levels were determined. The efficacy of IRAK1/4 inhibition by R835 in rodent models of joint inflammation was evaluated in a mouse model monosodium (MSU)-induced peritonitis, in rat model of MSU-induced gouty arthritis and in a rat model of collagen-induced arthritis (CIA).Results:In human cells, R835 blocked proinflammatory cytokine production in response to TLR, IL-1R and NLRP3 inflammasome activation. In mice, R835 dose-dependently decreased serum cytokines in response to administration of IL-1b. Mice pre-treated with R835 demonstrated dose-dependent reductions in MSU crystal-induced serum and peritoneal cytokine levels, as well as neutrophil influx in the peritoneal cavity. Prophylactic and therapeutic treatment with R835 also resulted in significant inhibition of MSU crystal-induced knee edema and pain in a rat model of human gouty arthritis. In the rat model of CIA, R835 blocked both onset and progression of disease, by reducing inflammation, cartilage degeneration and synovial inflammation.Conclusion:R835 is a promising clinical candidate for the treatment of a range of cytokine-driven rheumatological diseases. R835 has proven to have desirable pharmacokinetic properties, was well tolerated and suppressed LPS-induced serum cytokines in healthy volunteers in a recent phase 1 study.References:[1]Bahia M S, Kaur M, Silakari P, Silakari O. Interleukin-1 receptor associated kinase inhibitors: Potential therapeutic agents for inflammatory- and immune-related disorders. Cellular Signalling 27 (2015) 1039–1055.Disclosure of Interests:Chrystelle Lamagna Shareholder of: Rigel Pharmaceuticals, Employee of: Rigel Pharmaceuticals, Meagan Chan Shareholder of: Rigel Pharmaceuticals, Employee of: Rigel Pharmaceuticals, Ernest Tai Shareholder of: Rigel Pharmaceuticals, Employee of: Rigel Pharmaceuticals, Stacey Siu Shareholder of: Rigel Pharmaceuticals, Employee of: Rigel Pharmaceuticals, Roy Frances Shareholder of: Rigel Pharmaceuticals, Employee of: Rigel Pharmaceuticals, Sothy Yi Shareholder of: Rigel Pharmaceuticals, Employee of: Rigel Pharmaceuticals, Chi Young Shareholder of: Rigel Pharmaceuticals, Employee of: Rigel Pharmaceuticals, Vadim Markovtsov Shareholder of: Rigel Pharmaceuticals, Employee of: Rigel Pharmaceuticals, Yan Chen Shareholder of: Rigel Pharmaceuticals, Employee of: Rigel Pharmaceuticals, Lu Chou Shareholder of: Rigel Pharmaceuticals, Employee of: Rigel Pharmaceuticals, Gary Park Shareholder of: Rigel Pharmaceuticals, Employee of: Rigel Pharmaceuticals, Esteban Masuda Shareholder of: Rigel Pharmaceuticals, Employee of: Rigel Pharmaceuticals, Vanessa Taylor Shareholder of: Rigel Pharmaceuticals, Employee of: Rigel Pharmaceuticals
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Yan L, Tong S, Absalom A, Daas ID, Park G, Taylor V, Chow D, Lee M, Zheng H, Chow A. THU0219 FIRST-INHUMAN STUDY OF SAFETY, PHARMACOKINETICS AND PHARMACODYNAMICS OF IRAK1/4 INHIBITOR R835 IN HEALTHY SUBJECTS. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.4590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Toll-Like Receptors (TLR) and Interleukin-1 Receptors (IL-1R) play a critical role in the innate immune response as microbial and tissue damage sensors, providing a bridge between the innate and adaptive immunity. Interleukin receptor associated kinases (IRAK) 1 and 4 are serine/threonine kinases that are essential for signaling downstream of most TLRs and IL-1Rs and the resulting production of pro-inflammatory cytokines. Suppression of TLR and IL-1R signaling through inhibition of IRAK1/4 kinases is a promising therapeutic approach for the treatment of inflammatory and autoimmune diseases. We have identified a potent and selective IRAK1/4 inhibitor (R835) that showed dose-dependent inhibition of lipopolysaccharide (LPS, a TLR4 agonist), and IL-1β induced serum cytokines in mice. R835 prevented disease onset and progression in multiple rodent models of inflammatory diseases, including arthritis and lupus models.Objectives:The aim of this FIH study was to characterize the safety, pharmacokinetics (PK) and pharmacodynamics (PD) of R835 after single or multiple dose oral administrations.Methods:This study was a randomized, placebo-controlled, double-blind Phase 1 study in healthy subjects in three parts: single ascending doses (20 mg-1920 mg, Part A) with food effect in a separate cohort (480 mg), multiple ascending doses (120 mg and 960 mg, BID, Part B) with a caffeine interaction (960 mg cohort), and an intravenous LPS challenge test at 240 mg oral dose of R835 (Part C).Results:Single doses of up to 480 mg R835 in organic solution, single doses of up to 1920 mg R835 as capsule, multiple doses of 120 mg R835 Q12H (organic solution), and 960 mg R835 Q12H (capsule) were safe and well tolerated. All R835 related adverse events (AEs) were mild in intensity and reversible, and mostly associated with the higher doses of R835 in the organic solution. The most common AEs were headache and gastrointestinal disturbance. The PK of R835 was linear and dose proportional in exposure over the dose range studied. A nominal level of accumulation in plasma achieved rapidly upon repeated BID administrations with steady-state essentially attained in 2 days. A high-fat meal with the capsule formulation resulted in slow rate of absorption but had no effect on the extent of absorption. There was no effect of R835 on metabolism of caffeine (P450 CYP1A2 prototype substrate). In the LPS challenge test, R835 profoundly inhibited the acute release of cytokines, including TNF-α, IL-6, IL-8, MIP1α and MIP1β, but had no impact on CRP release.Conclusion:R835 was well tolerated after single or multiple dose administrations. The most common AEs were headache and gastrointestinal disturbance. For both of the formulations tested, the PK of R835 was linear and exposure was dose proportional with rapid steady-state attainment following BID administration. There was no drug-drug interaction by use of caffeine as the protype substrate. R835 inhibited the LPS induced release of cytokines in the serum, including TNF-α, IL-6, IL-8, MIP1α and MIP1β, mirroring preclinical data in mice. The desirable PK and safety profile combined with proof of mechanism, as demonstrated by inhibition of cytokine release, support progression of R835 into Phase II clinical development as an agent for the treatment of inflammatory and autoimmune diseases.Disclosure of Interests: :Lucy Yan Shareholder of: Amgen, Rigel, Employee of: Amgen, Rigel, Sandra Tong Shareholder of: Rigel, Employee of: Rigel, Anthony Absalom: None declared, Izaak den Daas: None declared, Gary Park Shareholder of: Rigel Pharmaceuticals, Employee of: Rigel Pharmaceuticals, Vanessa Taylor Shareholder of: Rigel Pharmaceuticals, Employee of: Rigel Pharmaceuticals, Donna Chow Shareholder of: Rigel, Employee of: Rigel, Meng Lee Shareholder of: Rigel, Employee of: Rigel, Hanzhe Zheng Shareholder of: Rigel, Employee of: Rigel, Andrew Chow Shareholder of: Rigel, Employee of: Rigel
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Park G, Park WS, Lee SK, Kim JO. A rare collision tumor comprising intracystic papillary neoplasm associated with adenocarcinoma and angiosarcoma in the gallbladder. Korean J Intern Med 2020; 35:732-733. [PMID: 31362472 PMCID: PMC7214352 DOI: 10.3904/kjim.2018.394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Accepted: 11/21/2018] [Indexed: 11/27/2022] Open
Affiliation(s)
- Geon Park
- Department of Radiology, College of Medicine, Daejeon St. Mary’s Hospital, The Catholic University of Korea, Daejeon, Korea
| | - Won Suk Park
- Department of Internal Medicine, College of Medicine, Daejeon St. Mary’s Hospital, The Catholic University of Korea, Daejeon, Korea
| | - Sang Kuon Lee
- Department of Surgery, College of Medicine, Daejeon St. Mary’s Hospital, The Catholic University of Korea, Daejeon, Korea
| | - Jong Ok Kim
- Department of Pathology, College of Medicine, Daejeon St. Mary’s Hospital, The Catholic University of Korea, Daejeon, Korea
- Correspondence to Jong Ok Kim, M.D. Tel: +82-42-220-9611 Fax: +82-42-220-9843 E-mail:
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Tan CW, Hsu WH, Yu PA, Chen CL, Kuo LT, Chi CC, Kim D, Park G. Anterior Cruciate Ligament Reconstruction in Patients Older Than 50 Years: A Systematic Review and Meta-analysis. Orthop J Sports Med 2020; 8:2325967120915698. [PMID: 32426406 PMCID: PMC7218932 DOI: 10.1177/2325967120915698] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Accepted: 01/03/2020] [Indexed: 12/22/2022] Open
Abstract
Background: There is no consensus regarding the best treatment approach for middle-aged patients with anterior cruciate ligament (ACL) injuries. Chronic ACL-deficient knees are often associated with instability as well as secondary meniscal and cartilage lesions. ACL reconstruction (ACLR) has achieved satisfactory outcomes in younger patients; however, the effectiveness and safety of ACLR in middle-aged patients remain uncertain. Purpose: To compare the patient-reported functional scores, arthrometric outcomes, and complications of primary ACLR between older (≥50 years) and younger (<50 years) patients. Study Design: Systematic review; Level of evidence, 3. Methods: We conducted a systematic review of cohort studies that compared the clinical outcomes of ACLR between patients aged ≥50 years and those aged <50 years. The Cochrane Central Register of Controlled Trials, Embase, and MEDLINE databases were searched for relevant studies. The Methodological Index for Non-randomized Studies (MINORS) criteria was used to assess the risk of bias and conducted a random-effects meta-analysis to combine the data, and the Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach was used to evaluate the overall quality of the body of retrieved evidence. The primary outcome was knee functional outcomes, and secondary outcomes were arthrometric outcomes of ACLR and complications. Results: This study included 4 retrospective cohort studies with a total of 287 participants (129 in the older group and 158 in the younger group). All included studies reported significant improvements in clinical outcomes in both groups after ACLR. No significant differences were noted in the improvement of International Knee Documentation Committee (IKDC) scores (mean difference [MD], 0.20 [95% CI, −2.65 to 3.05]; P = .89) and Lysholm scores (MD, −1.98 [95% CI, −6.93 to 2.98]; P = .43) between the 2 groups. No significant differences were observed in anteroposterior stability or risk of complications between the groups. Conclusion: ACLR may be performed in middle-aged patients (≥50 years) without concern for inferior clinical and arthrometric results compared with younger patients (<50 years).
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Affiliation(s)
- Chong-Wei Tan
- Division of Sports Medicine, Department of Orthopedic Surgery, Chang Gung Memorial Hospital, Puzi, Taiwan
| | - Wei-Hsiu Hsu
- Division of Sports Medicine, Department of Orthopedic Surgery, Chang Gung Memorial Hospital, Puzi, Taiwan.,College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Pei-An Yu
- Division of Sports Medicine, Department of Orthopedic Surgery, Chang Gung Memorial Hospital, Puzi, Taiwan
| | - Chi-Lung Chen
- Division of Sports Medicine, Department of Orthopedic Surgery, Chang Gung Memorial Hospital, Puzi, Taiwan
| | - Liang-Tseng Kuo
- Division of Sports Medicine, Department of Orthopedic Surgery, Chang Gung Memorial Hospital, Puzi, Taiwan.,College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Ching-Chi Chi
- College of Medicine, Chang Gung University, Taoyuan, Taiwan.,Department of Dermatology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Dokyung Kim
- School of Medicine, Samsung Medical Center, Sungkyunkwan University, Seoul, Republic of Korea
| | - Geon Park
- School of Medicine, Samsung Medical Center, Sungkyunkwan University, Seoul, Republic of Korea
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Kim UJ, Kim CM, Jang SJ, Lee SB, Cho SS, Jeong SH, Ko YJ, Kang SH, Park G, Kim DM, Yoon NR, Ahn YJ, Lim DH, Kook JK. Evaluation of Synergistic Effect of Combined Treatment with Linalool and Colistin on Multidrug-Resistant Acinetobacter baumannii to Expand Candidate for Therapeutic Option. Ann Clin Microbiol 2020. [DOI: 10.5145/acm.2020.23.1.11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Affiliation(s)
- Ung-Jun Kim
- Department of Laboratory Medicine, College of Medicine, Chosun University, Gwangju, Republic of Korea
| | - Choon-Mee Kim
- Premedical Science, College of Medicine, Chosun University, Gwangju, Republic of Korea
| | - Sook-Jin Jang
- Department of Laboratory Medicine, College of Medicine, Chosun University, Gwangju, Republic of Korea
| | - Seul-Bi Lee
- Department of Laboratory Medicine, College of Medicine, Chosun University, Gwangju, Republic of Korea
| | - Seong-Sik Cho
- Department of Laboratory Medicine, College of Medicine, Chosun University, Gwangju, Republic of Korea
| | - Seok-Hoon Jeong
- Department of Laboratory Medicine and Research Institute of Antimicrobial Resistance, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Young-Jin Ko
- Department of Laboratory Medicine, College of Medicine, Chosun University, Gwangju, Republic of Korea
| | - Seong-Ho Kang
- Department of Laboratory Medicine, College of Medicine, Chosun University, Gwangju, Republic of Korea
| | - Geon Park
- Department of Laboratory Medicine, College of Medicine, Chosun University, Gwangju, Republic of Korea
| | - Dong-Min Kim
- Department of Internal Medicine, College of Medicine, Chosun University, Gwangju, Republic of Korea
| | - Na-Ra Yoon
- Department of Internal Medicine, College of Medicine, Chosun University, Gwangju, Republic of Korea
| | - Young-Joon Ahn
- Department of Medical Education, College of Medicine, Chosun University, Gwangju, Republic of Korea
| | - Dong-hoon Lim
- Department of Urology, College of Medicine, Chosun University, Gwangju, Republic of Korea
| | - Joong-Ki Kook
- Korean Collection for Oral Microbiology and Department of Oral Biochemistry, College of Dentistry, Chosun University, Gwang-Ju, Republic of Korea
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Choi JA, Kim CM, Jang SJ, Cho SS, Jang CH, Ko YJ, Kang SH, Park G. Role of Efflux Pump Gene adeIJKto Multidrug Resistance in Acinetobacter baumanniiClinical Isolates. Ann Clin Microbiol 2020. [DOI: 10.5145/acm.2020.23.1.45] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Affiliation(s)
- Ji Ae Choi
- Division of Antimicrobial Resistance, Center for Infectious Diseases Research, Korea National Institute of Health, KCDC, Cheongju, Republic of Korea
| | - Choon-Mee Kim
- Premedical Science, College of Medicine, Chosun University Hospital, Gwangju, Republic of Korea
| | - Sook-Jin Jang
- Department of Laboratory Medicine, College of Medicine, Chosun University Hospital, Gwangju, Republic of Korea
| | - Seong-Sik Cho
- Department of Laboratory Medicine, Chosun University Hospital, Gwangju, Republic of Korea
| | - Chul Ho Jang
- Department of Otolaryngology, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Young-Jin Ko
- Department of Laboratory Medicine, College of Medicine, Chosun University Hospital, Gwangju, Republic of Korea
| | - Seong-Ho Kang
- Department of Laboratory Medicine, College of Medicine, Chosun University Hospital, Gwangju, Republic of Korea
| | - Geon Park
- Department of Laboratory Medicine, College of Medicine, Chosun University Hospital, Gwangju, Republic of Korea
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Park JH, Han JH, Park G. Rapid and Reliable One-Step ABO Genotyping Using Direct Real-Time Allele-Specific PCR and Melting Curve Analysis Without DNA Preparation. Indian J Hematol Blood Transfus 2019; 35:531-537. [PMID: 31388269 DOI: 10.1007/s12288-018-1053-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 11/24/2018] [Indexed: 11/26/2022] Open
Abstract
ABO genotyping is a molecular diagnostic technique important for transfusion and transplantation in medicine, and human identification in forensic science. Because ABO genotyping are labor intensive and time consuming, the genotyping cannot be firstly used to resolve the serological ABO discrepancy in blood bank. For rapid one-step ABO genotyping, we developed direct, real-time, allele-specific polymerase chain reaction (PCR), and melting curve analysis (DRAM assay) without DNA preparation. In DRAM assay, we used a special PCR buffer for direct PCR, a rapid RBC lysis buffer, white blood cells as template without DNA preparation, allele-specific primers for discriminating three ABO alleles (261G/del, 796C/A, and 803G/C), and melting curve analysis as a detection method. There was 100% concordance among the results of ABO genotyping by the DRAM assay, serologic typing, PCR-RFLP and PCR-direct sequencing of 96 venous blood samples. We were able to reduce the number of manual steps to three and the hands-on time to 12 min, compared to seven steps and approximately 40 min for conventional ABO genotyping using allele-specific PCR with purified DNA and agarose gel electrophoresis. We have established and validated the DRAM assay for rapid and reliable one-step ABO genotyping in a closed system. The DRAM assay with an appropriate number of allele-specific primers could help in resolving ABO discrepancies and should be valuable in clinical laboratory and blood bank.
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Affiliation(s)
- Jun-Hee Park
- 1Department of Otolaryngology-Head and Neck Surgery, Chosun University College of Medicine, 365 Pilmun-daero, Dong-gu, Gwangju, 61453 South Korea
| | - Ji-Hye Han
- 1Department of Otolaryngology-Head and Neck Surgery, Chosun University College of Medicine, 365 Pilmun-daero, Dong-gu, Gwangju, 61453 South Korea
| | - Geon Park
- 2Department of Laboratory Medicine, Chosun University College of Medicine, 365 Pilmun-daero, Dong-gu, Gwangju, 61453 South Korea
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Park G, Zhou B, Luo D. 805 Inhibitory effect of tranexamic acid on UVB-induced inflammation in Hacat cells. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.881] [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: 10/27/2022]
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Park G, Kurgansky G, Torroni A, Gil L, Neiva R, Witek L, Coelho P. Evaluation of bone regeneration at socket-filled extraction sites with PRF. Dent Mater 2019. [DOI: 10.1016/j.dental.2019.08.058] [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: 10/25/2022]
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Kim DK, Park G, Kuo LT, Park WH. Patients older than 50 years had similar results of knee strength and anteroposterior stability after ACL reconstruction compared to younger patients. Knee Surg Sports Traumatol Arthrosc 2019; 27:230-238. [PMID: 30600340 DOI: 10.1007/s00167-018-5342-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 12/17/2018] [Indexed: 11/24/2022]
Abstract
PURPOSE To evaluate knee strength, ligament stability, and functional outcomes in patients older than 50 years who underwent anterior cruciate ligament (ACL) reconstruction, and to compare these results with those obtained from a younger patient group (< 40 years). METHODS Forty patients older than 50 years and 50 patients younger than 40 years who underwent ACL reconstruction were retrospectively studied. Isokinetic extensor and flexor muscle strength were evaluated. The peak torque was determined at speeds of 60°/s and 180°/s. The highest peak torque at each velocity was compared with that on the uninjured side. Patients were also evaluated for knee anteroposterior (AP) laxity and functional outcomes, which were measured by the Lysholm and International Knee Documentation Committee (IKDC) scores. All tests were evaluated at baseline and 1 year postoperatively. RESULTS The groups were comparable at the baseline. Both groups had significant improvements in all parameters, including isokinetic muscle strength, AP laxity, and functional scores, at 1 year postoperatively (all p < 0.05). Compared with younger patients, older patients had similar results for extensor and flexor strength, AP laxity, and Lysholm score (n.s.). However, younger patients had better IKDC scores than did older patients [median 81.1; 95% confidence interval (CI) 95% CI 78.9-88.7 vs. median 75.6; 95% CI 70.1-79.3, p = 0.007]. CONCLUSIONS Though with lower IKDC scores, older patients with ACL reconstruction had comparable results of knee strength and ligament laxity to younger patients. ACL reconstruction is recommended for treating patients older than 50 years with ACL insufficiency, especially for those with high functional demand. LEVEL OF EVIDENCE Retrospective cohort study, III.
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Affiliation(s)
- Do Kyung Kim
- Department of Sports Medicine Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, South Korea
| | - Geon Park
- Department of Sports Medicine Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, South Korea
| | - Liang-Tseng Kuo
- Department of Orthopaedic Surgery and Sports Medicine Center, Chang Gung Memorial Hospital, No. 6 West Sec, Chia-Pu Road, Putz City, Chiayi, 613, Taiwan.
| | - Won Hah Park
- Department of Sports Medicine Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, South Korea.
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Han G, Kil D, Goo D, Park G, Kim J, Choi H, Kang H. PSIV-3 Late-Breaking: Transcriptomic analysis in the liver of aged brown-egg laying hens with different intensity of eggshell color. J Anim Sci 2018. [DOI: 10.1093/jas/sky404.628] [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)
- G Han
- Chung-Ang University,Anseong, South Korea
| | - D Kil
- Chung-Ang University,Anseong, South Korea
| | - D Goo
- Chung-Ang University,Anseong, South Korea
| | - G Park
- Chung-Ang University,Anseong, South Korea
| | - J Kim
- Chung-Ang University,Anseong, South Korea
| | - H Choi
- Chung-Ang University,Anseong, South Korea
| | - H Kang
- Chung-Ang University,Anseong, South Korea
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Galambos C, Park G, Popejoy LL. SO YOU ARE ASKING TO GO HOME? RESIDENT PERCEPTIONS OF TRANSITIONING FROM SKILLED NURSING FACILITIES TO COMMUNITY. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.104] [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)
- C Galambos
- Helen Bader School of Social Welfare, Milwaukee, Wisconsin, United States
| | - G Park
- B.A. School of Social Work, The University of Missouri Columbia
| | - L L Popejoy
- Sinclair School of Nursing, The University of Missouri Columbia
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Kim D, Park G, Kuo LT, Park W. The effects of pain on quadriceps strength, joint proprioception and dynamic balance among women aged 65 to 75 years with knee osteoarthritis. BMC Geriatr 2018; 18:245. [PMID: 30332992 PMCID: PMC6192068 DOI: 10.1186/s12877-018-0932-y] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Accepted: 10/01/2018] [Indexed: 01/12/2023] Open
Abstract
Background Patients with knee osteoarthritis (OA) were reported to have quadriceps weakness, and impaired proprioception, both related to pain and swelling. It is unclear whether pain alone a causal factor to above findings over the knee joint. The purpose of this study was to assess the effects of knee pain alone on the quadriceps strength, proprioception and dynamic balance in subjects with bilateral knee OA without joint swelling. Methods Fourty females with mean age of 68.3 years were involved in this cross-sectional study. The inclusion criteria were bilateral knee OA without joint swelling, with a visual analogue pain scale difference (> 1) between each knee. Patients all underwent assessment of the isokinetic strength of knee muscles, knee proprioceptive acuity, and dynamic balance. Results Patients’ more painful knee had weaker isokinetic quadriceps strength than less painful knee at both 60 °/s and 180 °/s (p = 0.01, p = 0.01, respectively). There were no differences in proprioceptive acuity between both knees in all three knee positions. Meanwhile, there was a significant difference in the dynamic balance index measurement between both knees (more painful versus less painful: 3.88 ± 1.15 vs. 3.30 ± 1.00, p = 0.01). Quadriceps strength was associated with dynamic balance stability (60 °/s, r = − 0.578, p < 0.01; 180 °/s, r = − 0.439, p < 0.01). Conclusions For patients with knee OA, the more painful knee was associated with weaker quadriceps and poor balance ability. To improve lower limb function and balance stability of the older persons having knee OA, physicians should take the optimal pain management strategy. Electronic supplementary material The online version of this article (10.1186/s12877-018-0932-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Dokyung Kim
- Department of Sports Medicine Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, South Korea
| | - Geon Park
- Department of Sports Medicine Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, South Korea
| | - Liang-Tseng Kuo
- Sports Medicine Center, Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, No. 6 West Sec, Chia-Pu Road, Putz city, Chiayi, 613, Taiwan. .,Chang Gung University of Science and Technology, Chiayi, Taiwan.
| | - Wonhah Park
- Department of Sports Medicine Center, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, South Korea
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Jo S, Park G, Chang YK, Park CW, Kim SY, Hong YA. Bilateral perirenal extra-adrenal myelolipoma in a haemodialysis patient. Nephrology (Carlton) 2018; 23:604-605. [PMID: 29890044 DOI: 10.1111/nep.13136] [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] [Accepted: 08/02/2017] [Indexed: 12/01/2022]
Affiliation(s)
- Seongil Jo
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Geon Park
- Department of Radiology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Yoon Kyung Chang
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Cheol Whee Park
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Suk Young Kim
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Yu Ah Hong
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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Kim JY, Han JH, Park G, Seo YW, Yun CW, Lee BC, Bae J, Moon AR, Kim TH. Correction: Necrosis-inducing peptide has the beneficial effect on killing tumor cells through neuropilin (NRP-1) targeting. Oncotarget 2018; 9:26977. [PMID: 29928495 PMCID: PMC6003566 DOI: 10.18632/oncotarget.25604] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Affiliation(s)
- Ji-Young Kim
- Department of Biochemistry, Chosun University School of Medicine, Dong-Gu, Gwang-Ju, Korea
| | - Ji-Hae Han
- Department of Biochemistry, Chosun University School of Medicine, Dong-Gu, Gwang-Ju, Korea
| | - Geon Park
- Department of Laboratory Medicine, Chosun University School of Medicine, Dong-Gu, Gwang-Ju, Korea
| | - Young-Woo Seo
- Korea Basic Science Institute Gwang-Ju Center, Chonnam National University, Buk-Gu, Gwang-Ju, Korea
| | - Cheol-Won Yun
- School of Life Science and Biotechnology, Korea University, Seoul, Korea
| | | | - Jeehyeon Bae
- School of Pharmacy, Chung-Ang University, Dongjak-Gu, Seoul, Korea
| | - Ae Ran Moon
- Department of Biochemistry, Chosun University School of Medicine, Dong-Gu, Gwang-Ju, Korea
| | - Tae-Hyoung Kim
- Department of Biochemistry, Chosun University School of Medicine, Dong-Gu, Gwang-Ju, Korea
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Abstract
Background Cancer-patient navigators who are oncology nurses support and connect patients to resources throughout the cancer care trajectory, including end of life. Although qualitative and cohort studies of navigated patients have been reported, no population-based studies were found. The present population-based study compared demographic, disease, and outcome characteristics for decedents who had been diagnosed with cancer by whether they did or did not see a navigator. Methods This retrospective study used patient-based administrative data in Nova Scotia (cancer registry, death certificates, navigation visits) to generate descriptive statistics. The study population included all adults diagnosed with cancer who died during 2011-2014 of a cancer or non-cancer cause of death. Results Of the 7694 study decedents, 74.9% had died of cancer. Of those individuals, 40% had seen a navigator at some point in their disease trajectory. The comparable percentage for those who did not die of cancer was 11.9%. Decedents at the oldest ages had the lowest navigation rates. Navigation rates, time from diagnosis to death, and time from last navigation visit to death varied by disease site. Conclusions This population-based study of cancer-patient navigation enrolees compared with non-enrolees is the first of its kind. Most findings were consistent with expectations. However, we do not know whether the rates of navigation are consistent with the navigation needs of the population diagnosed with cancer. Because more people are living longer with cancer and because the population is aging, ongoing surveillance of who requires and who is using navigation services is warranted.
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Affiliation(s)
| | - G.M. Johnston
- School of Health Administration, Dalhousie University; and
- Cancer Care Program, Nova Scotia Health Authority, Halifax, NS
| | | | - G. Walsh
- Cancer Care Program, Nova Scotia Health Authority, Halifax, NS
| | - M. McCallum
- Cancer Care Program, Nova Scotia Health Authority, Halifax, NS
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Huh JY, Han OJ, Park G. Rapid, Reliable, and Inexpensive HLA-B*58:01 Detection Method Using DNA Binding Dye-based Duplex Allele-specific Melting Curve Analysis. Ann Clin Lab Sci 2018; 48:296-300. [PMID: 29970431] [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] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
BACKGROUND Allopurinol is the most commonly used drug for the treatment of gout and also one of the most common causes of severe cutaneous adverse reactions (SCARs). Human leukocyte antigen-B*58:01 (HLA-B*58:01) is strongly associated with allopurinol-induced SCARs. The aim of the present study was to develop and validate a rapid and economic screening method for HLA-B*58:01. METHODS The accuracy of duplex allele-specific melting curve analysis using DNA-binding dye for HLA-B*58:01 was evaluated in 150 blood samples with sequence-based typing (SBT) as the reference method. RESULTS Fifty HLA-B*58:01-positive and 100 negative results obtained by duplex allele-specific melting curve analysis were completely in agreement with the SBT results. CONCLUSION Duplex allele-specific melting curve analysis is a rapid, reliable and inexpensive assay that is appropriate for screening for the HLA-B*58:01 allele.
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Affiliation(s)
- Ji Young Huh
- Department of Laboratory Medicine, CHA Bundang Medical Center, Gyeonggi-do, CHA University, Korea
| | - Ok Jin Han
- Department of Laboratory Medicine, CHA Bundang Medical Center, Gyeonggi-do, CHA University, Korea
| | - Geon Park
- Department of Laboratory Medicine, Chosun University College of Medicine, Gwangju, Korea
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Park M, Jeong J, Park G, Jo S. 1131 Long term millimeter wave irradiation could break stem cell niche of induced pluripotent stem cells. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.1145] [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: 10/17/2022]
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43
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Park G, Park W, Kim D, Gupta A. Relationship Between Rotator Cuff Strength & Functional Scores After Bankart Repair. Med Sci Sports Exerc 2018. [DOI: 10.1249/01.mss.0000538244.00816.c9] [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: 11/21/2022]
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Kang YH, Han E, Park G. Clinical Etiology of Hypermetabolic Pelvic Lesions in Postoperative Positron Emission Tomography/Computed Tomography for Patients With Rectal and Sigmoid Cancer. Ann Coloproctol 2018; 34:78-82. [PMID: 29742861 PMCID: PMC5951092 DOI: 10.3393/ac.2017.09.21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Accepted: 09/21/2017] [Indexed: 12/24/2022] Open
Abstract
Purpose The purpose of this study was to present various clinical etiologies of hypermetabolic pelvic lesions on postoperative positron emission tomography/computed tomography (PET/CT) images for patients with rectal and sigmoid cancer. Methods Postoperative PET/CT images for patients with rectal and sigmoid cancer were retrospectively reviewed to identify hypermetabolic pelvic lesions. Positive findings were detected in 70 PET/CT images from 45 patients; 2 patients who were lost to follow-up were excluded. All PET findings were analyzed in comparison with contrast-enhanced CT. Results A total of 43 patients were classified into 2 groups: patients with a malignancy including local recurrence (n = 30) and patients with other benign lesions (n = 13). Malignant lesions such as a local recurrent tumor, peritoneal carcinomatosis, and incidental uterine malignancy, as well as various benign lesions such as an anastomotic sinus, fistula, abscess, reactive lymph node, and normal ovary, were observed. Conclusion PET/CT performed during postoperative surveillance of rectal and sigmoid colon cancer showed increased fluorodeoxyglucose uptake not only in local recurrence, but also in benign pelvic etiologies. Therefore, physicians need to be cautious about the broad clinical spectrum of hypermetabolic pelvic lesions when interpreting images.
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Affiliation(s)
- Yun Hee Kang
- Department of Nuclear Medicine, Eulji University Hospital, Daejeon, Korea
| | - Eunji Han
- Department of Nuclear Medicine, The Catholic University of Korea, Daejeon St. Mary's Hospital, Daejeon, Korea
| | - Geon Park
- Department of Radiology, The Catholic University of Korea, Daejeon St. Mary's Hospital, Daejeon, Korea
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45
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Kim JY, Han JH, Park G, Seo YW, Yun CW, Lee BC, Bae J, Moon AR, Kim TH. Necrosis-inducing peptide has the beneficial effect on killing tumor cells through neuropilin (NRP-1) targeting. Oncotarget 2018; 7:32449-61. [PMID: 27083053 PMCID: PMC5078025 DOI: 10.18632/oncotarget.8719] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Accepted: 03/28/2016] [Indexed: 12/21/2022] Open
Abstract
The therapeutic efficacy of most anti-cancer drugs depends on their apoptosis-inducing abilities. Previously, we showed that a peptide containing the mitochondrial targeting domain (MTD) found in Noxa, a BH-3 only protein of Bcl-2 family, induces necrosis. Here, a fusion peptide of neuropilin-1 (NRP-1) targeting peptide and MTD peptide, designated tumor homing motif 17:MTD (TU17:MTD), was found to induce necrosis in cancer cells in vitro and to cause the regression of tumors when intravenously injected into mice bearing subcutaneous CT26 colorectal carcinoma tumors. The necrosis within tumor tissues was evident upon administering TU17:MTD. TU17:MTD penetrated into tumor cells by targeting to Neuropilin-1, which could be blocked by anti-NRP-1 antibody. The efficacy of TU17:MTD on tumor regression was higher than that of TU17:D(KLAKLAK)2, a fusion peptide of NRP-1 targeting peptide and a pro-apoptotic peptide. The necrotic cell death within tumor tissues was evident at day 1 after administering TU17:MTD systemically. Transplanted subcutaneous substantially reduced in size within two weeks and 5 days, respectively, with no apparent side effects. Together, these results propose that the pro-necrotic peptide MTD may present an alternative approach for development of targeted anti-cancer agents.
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Affiliation(s)
- Ji-Young Kim
- Department of Biochemistry, Chosun University School of Medicine, Dong-Gu, Gwang-Ju, Korea
| | - Ji-Hae Han
- Department of Biochemistry, Chosun University School of Medicine, Dong-Gu, Gwang-Ju, Korea
| | - Geon Park
- Department of Laboratory Medicine, Chosun University School of Medicine, Dong-Gu, Gwang-Ju, Korea
| | - Young-Woo Seo
- Korea Basic Science Institute Gwang-Ju Center, Chonnam National University, Buk-Gu, Gwang-Ju, Korea
| | - Cheol-Won Yun
- School of Life Science and Biotechnology, Korea University, Seoul, Korea
| | | | - Jeehyeon Bae
- School of Pharmacy, Chung-Ang University, Dongjak-Gu, Seoul, Korea
| | - Ae Ran Moon
- Department of Biochemistry, Chosun University School of Medicine, Dong-Gu, Gwang-Ju, Korea
| | - Tae-Hyoung Kim
- Department of Biochemistry, Chosun University School of Medicine, Dong-Gu, Gwang-Ju, Korea
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Chun S, Yun JW, Park G, Cho D. The synonymous nucleotide substitution RHD 1056C>G alters mRNA splicing associated with serologically weak D phenotype. J Clin Lab Anal 2017; 32:e22330. [PMID: 28926139 DOI: 10.1002/jcla.22330] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2017] [Accepted: 08/30/2017] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND D antigen is one of the most clinically significant blood group antigens. Variation of the RHD gene can cause weak D or partial D phenotypes. While most variations are missense substitutions with amino acid changes, those without are called "silent" or "synonymous" substitutions. Synonymous substitutions often have little effect on the protein, not altering the phenotype. However, effect on splicing can affect end-product protein. We report a new synonymous variation, RHD 1056C>G, that resulted in weak D phenotype, and predicted its effect with various in silico methods. METHODS Serologic testing of the D antigen with full sequencing of the RHD gene was done. Human Splice Finder was used to predict the effect of this variation, and validation of this method was done with all known RHD variations reported in the literature. RESULTS RHD 1056C>G was predicted to cause the formation of an exonic splicing silencer (ESS) site. The creation of new ESS site potentially inhibits the splicing event, resulting alteration of splicing. This is similar to remodeling of splice acceptor or donor site, as this kind of deep exonic variation could affect the D antigen's quality or quantity. This is in concordance with serologic results, which showed only delayed weak agglutination to anti-D reagents. CONCLUSIONS The analytic methods we applied showed good correlation with the actual phenotype, along with concordant results when analyzing other known variants reported in the literature. We conclude that RHD 1056C>G results in serologic weak D phenotype.
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Affiliation(s)
- Sejong Chun
- Department of Laboratory Medicine & Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jae Won Yun
- Samsung Advanced Institute of Health Science and Technology, Sungkyunkwan University, Seoul, Korea
| | - Geon Park
- Department of Laboratory Medicine, Chosun University College of Medicine, Gwangju, Korea
| | - Duck Cho
- Department of Laboratory Medicine & Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.,Stem Cell & Regenerative Medicine Institute, Samsung Medical Center, Seoul, Korea
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Park G. Survival outcome and optimal treatment of intermediate-grade salivary gland carcinoma. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx374.054] [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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48
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Choi SW, Kim BB, Choi DH, Park G, Shin BC, Song H, Kim D, Kim DM. Stroke or left atrial thrombus prediction using antithrombin III and mean platelet volume in patients with nonvalvular atrial fibrillation. Clin Cardiol 2017; 40:1013-1019. [PMID: 28805957 DOI: 10.1002/clc.22759] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Accepted: 06/09/2017] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND CHADS2 (congestive heart failure, hypertension, age ≥ 75 years, diabetes mellitus, stroke) and CHA2 DS2 -VASc (congestive heart failure, hypertension, age ≥ 75 years, diabetes mellitus, stroke, vascular disease, age 65 to 74 years, sex category) scores showed just moderate discrimination ability in predicting thromboembolic complications in patients with nonvalvular atrial fibrillation (AF). HYPOTHESIS To determine the association of antithrombin III (AT-III) deficiency and mean platelet volume (MPV) with the development of stroke or left atrial (LA) thrombus in patients with AF. METHODS AT-III and MPV were analyzed in 352 patients with AF. The primary endpoint was a composite of ischemic stroke event and incidental LA thrombus. RESULTS There were 50 events (14.2%) during a mean 35.4 months of follow-up. A significantly higher stroke or LA thrombus rate was observed in the low-AT-III group (<70%) than that in the high-AT-III group (≥70%). A significantly higher stroke or LA thrombus rate was observed in the high-MPV group (≥7.0 fL) than that in the low-MPV group (<7.0 fL). AF patients with an MPV ≥7.0 fL and AT-III deficiency had higher stroke or LA thrombus risk than those without an MPV ≥7.0 fL and AT-III deficiency. In the Cox proportional hazard analysis, high MPV was found to be an independent predictor of stroke or LA thrombus risk (hazard ratio: 6.408; 95% confidence interval: 2.874-14.286). Although AT-III deficiency was not an independent predictor of stroke or LA thrombus risk, a trend was observed. CONCLUSIONS High MPV and AT-III deficiency were predictive markers for stroke or LA thrombus. Their predictive power for stroke was independent of antiplatelet treatment, anticoagulation therapy, and a high CHA2 DS2 -VASc score in patients with AF.
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Affiliation(s)
- Seo-Won Choi
- Department of Cardiology, Gwangju Veterans Hospital, Gwangju, Republic of Korea
| | - Bo-Bae Kim
- Department of Internal Medicine, Chosun University School of Medicine, Gwangju, Republic of Korea
| | - Dong-Hyun Choi
- Department of Internal Medicine, Chosun University School of Medicine, Gwangju, Republic of Korea
| | - Geon Park
- Department of Laboratory Medicine, Chosun University School of Medicine, Gwangju, Republic of Korea.,Research Center for Resistant Cells, Chosun University School of Medicine, Gwangju, Republic of Korea
| | - Byung Chul Shin
- Department of Internal Medicine, Chosun University School of Medicine, Gwangju, Republic of Korea
| | - Heesang Song
- Department of Biochemistry and Molecular Biology, Chosun University School of Medicine, Gwangju, Republic of Korea
| | - DongHun Kim
- Department of Radiology, Chosun University School of Medicine, Gwangju, Republic of Korea
| | - Dong-Min Kim
- Department of Internal Medicine, Chosun University School of Medicine, Gwangju, Republic of Korea
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Stotler D, Battaglia D, Hager R, Kim K, Koskela T, Park G, Reinke M. Kinetic neoclassical calculations of impurity radiation profiles. Nuclear Materials and Energy 2017. [DOI: 10.1016/j.nme.2016.12.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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50
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Choi JC, Park YH, Park SK, Lee JS, Kim J, Choi JI, Yoon KB, Lee S, Lim DE, Choi JY, Kim MH, Park G, Choi SS, Lee JM. Testosterone effects on pain and brain activation patterns. Acta Anaesthesiol Scand 2017; 61:668-675. [PMID: 28573655 DOI: 10.1111/aas.12908] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Revised: 03/27/2017] [Accepted: 04/28/2017] [Indexed: 12/22/2022]
Abstract
BACKGROUND This study investigated whether pain and pain-related unpleasantness ratings were altered by blood testosterone levels. We also investigated whether activation of brain regions that represent pain intensity [primary somatosensory cortex (S1)] and pain-related unpleasantness [perigenual ACC (pACC) and orbitofrontal cortex (OFC)] were affected by blood testosterone levels. METHODS Twenty-six healthy men were recruited. Blood testosterone levels were measured before fMRI scanning. The participants were classified into two groups (high vs. low testosterone) according to their blood testosterone level (each group n = 13). The middle finger was immersed in a 50°C water bath (50°C, 30 s, five times) to induce identical noxious stimulation in all participants. RESULTS The low testosterone group showed statistically significantly higher pain (P = 0.047), unpleasantness (P = 0.047), anxiety (P = 0.015), and fear ratings (P = 0.01) than the high testosterone group. Fear rating increased as pain rating rose and as testosterone level decreased (P < 0.001). When participants received noxious stimulation, the pACC and OFC were more highly activated in the low testosterone group compared to the high testosterone group. Activation of S1, a region related to pain intensity, did not differ between both groups. CONCLUSION Compared to the high testosterone group, the low testosterone group had significant activation in the pACC and OFC, regions that represent pain-related unpleasantness, but not in S1 that represents pain intensity, leading to higher pain ratings. These findings emphasize the importance of considering the effects of testosterone levels when treating patients.
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Affiliation(s)
- J. C. Choi
- Department of Anesthesiology and Pain Medicine; Intensive Care Unit; Brain Research Group; Yonsei University Wonju College of Medicine; Wonju Gangwon-do South Korea
| | - Y.-H. Park
- Department of Biomedical Engineering; Hanyang University; Seoul South Korea
| | - S. K. Park
- Yonsei Danaa Pain Clinic; Seoul South Korea
| | - J. S. Lee
- Department of Biomedical Engineering; Hanyang University; Seoul South Korea
| | - J. Kim
- Department of Psychology; Kangwon National University; Chuncheon Gangwon-do South Korea
| | - J. I. Choi
- Dr. Choi's Rehab & Pain Clinic; Ansan Gyeonggi-do South Korea
| | - K. B. Yoon
- Department of Anesthesiology and Pain Medicine; Anesthesia and Pain Research Institute; Yonsei University College of Medicine; Seoul Republic of Korea
| | - S. Lee
- Department of Anesthesiology and Pain Medicine; Haeundae Paik Hospital; Inje University; Busan South Korea
| | - D. E. Lim
- Department of Orthopaedic surgery; Modu Hospital; Incheon South Korea
| | - J. Y. Choi
- Department of Neurosurgery; Gangbuk 21st Century Hospital; Seoul South Korea
| | - M. H. Kim
- Department of Anesthesiology and Pain Medicine; Yonsei University Wonju College of Medicine; Wonju Gangwon-do South Korea
| | - G. Park
- Department of Anesthesiology and Pain Medicine; Yonsei University Wonju College of Medicine; Wonju Gangwon-do South Korea
| | - S. S. Choi
- Department of Anaesthesiology and Pain Medicine; Guro Hospital; Korea University; Seoul South Korea
| | - J.-M. Lee
- Department of Biomedical Engineering; Hanyang University; Seoul South Korea
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