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Crossley MP, Song C, Bocek MJ, Choi JH, Kousouros JN, Sathirachinda A, Lin C, Brickner JR, Bai G, Lans H, Vermeulen W, Abu-Remaileh M, Cimprich KA. Author Correction: R-loop-derived cytoplasmic RNA-DNA hybrids activate an immune response. Nature 2024; 626:E6. [PMID: 38263519 DOI: 10.1038/s41586-024-07064-1] [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: 01/25/2024]
Affiliation(s)
- Magdalena P Crossley
- Department of Chemical and Systems Biology, Stanford University, Stanford, CA, USA
| | - Chenlin Song
- Department of Chemical and Systems Biology, Stanford University, Stanford, CA, USA
| | - Michael J Bocek
- Department of Chemical and Systems Biology, Stanford University, Stanford, CA, USA
| | - Jun-Hyuk Choi
- Department of Chemical and Systems Biology, Stanford University, Stanford, CA, USA
- Biometrology Group, Division of Chemical and Biological Metrology, Korea Research Institute of Standards and Science, Daejeon, South Korea
- Department of Bio-Analytical Science, University of Science & Technology, Daejeon, South Korea
| | - Joseph N Kousouros
- Department of Chemical and Systems Biology, Stanford University, Stanford, CA, USA
| | - Ataya Sathirachinda
- Department of Chemical and Systems Biology, Stanford University, Stanford, CA, USA
| | - Cindy Lin
- Department of Chemical Engineering, Stanford University, Stanford, CA, USA
- Department of Genetics, Stanford University, Stanford, CA, USA
- The Institute for Chemistry, Engineering & Medicine for Human Health (ChEM-H), Stanford University, Stanford, CA, USA
| | - Joshua R Brickner
- Department of Chemical and Systems Biology, Stanford University, Stanford, CA, USA
| | - Gongshi Bai
- Department of Chemical and Systems Biology, Stanford University, Stanford, CA, USA
| | - Hannes Lans
- Department of Molecular Genetics, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Wim Vermeulen
- Department of Molecular Genetics, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Monther Abu-Remaileh
- Department of Chemical Engineering, Stanford University, Stanford, CA, USA
- Department of Genetics, Stanford University, Stanford, CA, USA
- The Institute for Chemistry, Engineering & Medicine for Human Health (ChEM-H), Stanford University, Stanford, CA, USA
| | - Karlene A Cimprich
- Department of Chemical and Systems Biology, Stanford University, Stanford, CA, USA.
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Lee KB, Kim MH, Yoon JT, Song Y, Kwon B, Hwang SM, Choi JH, Lee DH. A simplified cranial cavity model to understand the relationship between intracranial pressure and dural sinus pressure. Interv Neuroradiol 2024; 30:57-63. [PMID: 35679068 PMCID: PMC10956465 DOI: 10.1177/15910199221107440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 05/27/2022] [Indexed: 11/15/2022] Open
Abstract
Although accurate intracranial pressure (ICP) monitoring is essential for the diagnosis and treatment of severe brain diseases, current methods are performed invasively. Therefore, a safe and less invasive ICP measurement is required. The purpose of our study was to develop a simplified cranial cavity model for a better understanding of the relationship between the ICP and the pressure measurement within the dural venous sinus (DVS) to support the validity of using sinus pressure as the surrogate of the ICP. The in-house cranial cavity model had three components: the brain part, the DVS part, and the subarachnoid space (SAS) part. Pressure in other parts was measured when the pressure in the SAS part and, separately, brain part was increased from 0 (baseline) to 50 mmHg at intervals of 10 mmHg. When the pressure in the SAS part was increased from 10 to 50 mmHg at 10 mmHg interval, pressures of both the brain and DVS parts increased without significant difference (all P > 0.05). However, pressures in both the SAS and DVS parts differed while the pressure in the brain part was increased. The pressures in both parts showed about 70% of the increase in the brain part. Nevertheless, the pressures in the SAS and DVS parts were not significantly different (P > 0.05). A simplified in-house cranial cavity model was developed consisting of three compartments to represent the actual intracranial spaces. The pressure measurement within the DVS was feasible to use as a surrogate for the ICP measurement.
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Affiliation(s)
- KB Lee
- Department of Radiologic Technology, Chungbuk Health & Science University, Cheongju 28150, Republic of Korea
| | - MH Kim
- Department of Radiology, Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea
| | - J-T Yoon
- Department of Radiology, Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea
| | - Y Song
- Department of Radiology, Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea
| | - B Kwon
- Department of Radiology, Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea
| | - SM Hwang
- Department of Radiology, Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea
| | - JH Choi
- Department of Radiology, Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea
| | - DH Lee
- Department of Radiology, Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Republic of Korea
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Park JS, Choi JH, Joung MY, Yang IG, Choi YS, Kang MJ, Ho MJ. Design of High-Payload Ascorbyl Palmitate Nanosuspensions for Enhanced Skin Delivery. Pharmaceutics 2024; 16:171. [PMID: 38399233 PMCID: PMC10891688 DOI: 10.3390/pharmaceutics16020171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 01/16/2024] [Accepted: 01/22/2024] [Indexed: 02/25/2024] Open
Abstract
A high-payload ascorbyl palmitate (AP) nanosuspension (NS) was designed to improve skin delivery following topical application. The AP-loaded NS systems were prepared using the bead-milling technique, and softly thickened into NS-loaded gel (NS-G) using hydrophilic polymers. The optimized NS-G system consisted of up to 75 mg/mL of AP, 0.5% w/v of polyoxyl-40 hydrogenated castor oil (Kolliphor® RH40) as the suspending agent, and 1.0% w/v of sodium carboxymethyl cellulose (Na.CMC 700 K) as the thickening agent, in citrate buffer (pH 4.5). The NS-G system was embodied as follows: long and flaky nanocrystals, 493.2 nm in size, -48.7 mV in zeta potential, and 2.3 cP of viscosity with a shear rate of 100 s-1. Both NS and NS-G provided rapid dissolution of the poorly water-soluble antioxidant, which was comparable to that of the microemulsion gel (ME-G) containing AP in solubilized form. In an ex vivo skin absorption study using the Franz diffusion cell mounted on porcine skin, NS-G exhibited faster absorption in skin, providing approximately 4, 3, and 1.4 times larger accumulation than that of ME-G at 3, 6, and 12 h, respectively. Therefore, the high-payload NS makes it a promising platform for skin delivery of the lipid derivative of ascorbic acid.
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Affiliation(s)
| | | | | | | | | | - Myung-Joo Kang
- College of Pharmacy, Dankook University, 119 Dandae-ro, Dongnam-gu, Cheonan 31116, Republic of Korea; (J.-S.P.); (J.-H.C.); (M.-Y.J.); (I.-G.Y.); (Y.-S.C.)
| | - Myoung-Jin Ho
- College of Pharmacy, Dankook University, 119 Dandae-ro, Dongnam-gu, Cheonan 31116, Republic of Korea; (J.-S.P.); (J.-H.C.); (M.-Y.J.); (I.-G.Y.); (Y.-S.C.)
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Lee SM, Choi JH, Chie EK, Kang HC, Kim KS. Efficacy and Safety of Image-Guided Hypofractionated Radiotherapy for Hepatocellular Carcinoma with Portal Vein Tumor Thrombosis. Int J Radiat Oncol Biol Phys 2023; 117:e313-e314. [PMID: 37785127 DOI: 10.1016/j.ijrobp.2023.06.2343] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) To evaluate the efficacy and safety of image-guided 10-fraction hypofractionated radiotherapy (RT) in hepatocellular carcinoma (HCC) patients with portal vein tumor thrombosis (PVTT). MATERIALS/METHODS Between 2016 and March 2022, 69 HCC with PVTT patients received RT (40-50Gy/10fx) in our institutions. The median prescribed dose of 50 Gy (range, 40-50 Gy, BED10; 56-75 Gy10) was delivered in 10 fractions in all patients. Follow-up imaging was performed at three-month intervals after the completion of RT. The extent of PVTT was described according to the Liver Cancer Study Group of Japan classification: Vp0 = no PVTT, Vp1 = segmental portal vein branch, Vp2 = right/left anterior/posterior portal vein, Vp3 = right/left portal vein and Vp4 = main portal vein. Response evaluation was performed using response evaluation criteria in solid tumors, version 1.1. Freedom from local progression (FFLP), progression-free survival (PFS), and overall survival (OS) were calculated from the start date of RT. RESULTS In this cohort, 4.3% of patients had Vp1 PVTT, 20.3% had Vp2, 37.7% had Vp3, and 37.7% had Vp4. The median PTV volume was 105.3 cc (interquartile range [IQR], 74.1-179.4 cc). Fifty-two (75.4%) patients received 50 Gy in 10 fractions. With a median follow-up of 10.2 months (IQR, 6-21 months), the median OS was 18.5 months, and 1-year FFLP, PFS, and OS rates were 84.8%, 26.9%, and 62.2% respectively. At 3 months after RT, 13.0% had a complete response, 36.2% had a partial response, 46.4% had a stable disease and 4.4% had a progressive disease. In the multivariate analysis, AFP ≥ 600 IU/ml (HR 2.06, p = 0.03), Child-Pugh Class B or C (HR 2.30, p = 0.02), and modified Union for International Cancer Control (mUICC) stage IVA or IVB (4.05, p = 0.02) were significantly related to OS. During the follow-up period, there were 2 (2.8%) cases of grade ≥3 toxicity: grade 3 AST/ALT elevation (n = 1), and acute cholangitis (n = 1). CONCLUSION Hypofractionated RT demonstrated promising local PVTT control with acceptable toxicity. These data suggest that 10-fraction image-guided hypofractionated RT (BED10 = 56-75 Gy10) is a feasible treatment option for PVTT in HCC patients.
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Affiliation(s)
- S M Lee
- Department of Radiation Oncology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - J H Choi
- Chung-Ang University Hospital, Seoul, Korea, Republic of (South) Korea
| | - E K Chie
- Department of Radiation Oncology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - H C Kang
- Department of Radiation Oncology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - K S Kim
- Department of Radiation Oncology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea, Republic of (South) Korea
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Wiley EA, Choi JH, Mouser PJ, Ewing PJ, Hogan KM. Presumed primary cardiac mast cell tumor, pericardial effusion, and arrhythmia in a dog. J Vet Cardiol 2023; 47:83-88. [PMID: 37269789 DOI: 10.1016/j.jvc.2023.05.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 03/21/2023] [Accepted: 05/04/2023] [Indexed: 06/05/2023]
Abstract
A 13-year-old female spayed border collie cross presented for pericardial effusion, arrhythmia, and a suspected cardiac mass. Echocardiogram revealed severe thickening and hypokinesis of the interventricular septum with a heterogenous, cavitated myocardium, concerning for neoplasia. Electrocardiogram revealed predominantly accelerated idioventricular rhythm with frequent periods of nonsustained ventricular tachycardia. Occasional prolonged PR intervals terminating in an aberrantly conducted QRS complex were present. These beats were postulated to represent either first-degree atrioventricular block with aberrant QRS conduction or atrioventricular dissociation. Cytology of the pericardial effusion revealed atypical, suspected neoplastic, mast cells. The patient was euthanized, and postmortem examination confirmed full-thickness infiltration of the interventricular septum by a mast cell tumor, with metastasis to the tracheobronchial lymph node and spleen. Given the anatomic location of the mass, the observed atrioventricular nodal conduction delay may represent neoplastic infiltration of the atrioventricular node. Neoplastic infiltration of the ventricle was suspected to cause the accelerated idioventricular rhythm and ventricular tachycardia. To the authors' knowledge, this is the first reported case of a primary cardiac mast cell tumor causing arrhythmia and pericardial effusion in a dog.
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Affiliation(s)
- E A Wiley
- Angell Animal Medical Center, 350 South Huntington Avenue, Boston, MA 02130, USA.
| | - J H Choi
- Angell Animal Medical Center, 350 South Huntington Avenue, Boston, MA 02130, USA
| | - P J Mouser
- Angell Animal Medical Center, 350 South Huntington Avenue, Boston, MA 02130, USA
| | - P J Ewing
- Angell Animal Medical Center, 350 South Huntington Avenue, Boston, MA 02130, USA
| | - K M Hogan
- Angell Animal Medical Center, 350 South Huntington Avenue, Boston, MA 02130, USA
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Crossley MP, Song C, Bocek MJ, Choi JH, Kousouros JN, Sathirachinda A, Lin C, Brickner JR, Bai G, Lans H, Vermeulen W, Abu-Remaileh M, Cimprich KA. R-loop-derived cytoplasmic RNA-DNA hybrids activate an immune response. Nature 2023; 613:187-194. [PMID: 36544021 PMCID: PMC9949885 DOI: 10.1038/s41586-022-05545-9] [Citation(s) in RCA: 75] [Impact Index Per Article: 75.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 11/08/2022] [Indexed: 12/24/2022]
Abstract
R-loops are RNA-DNA-hybrid-containing nucleic acids with important cellular roles. Deregulation of R-loop dynamics can lead to DNA damage and genome instability1, which has been linked to the action of endonucleases such as XPG2-4. However, the mechanisms and cellular consequences of such processing have remained unclear. Here we identify a new population of RNA-DNA hybrids in the cytoplasm that are R-loop-processing products. When nuclear R-loops were perturbed by depleting the RNA-DNA helicase senataxin (SETX) or the breast cancer gene BRCA1 (refs. 5-7), we observed XPG- and XPF-dependent cytoplasmic hybrid formation. We identify their source as a subset of stable, overlapping nuclear hybrids with a specific nucleotide signature. Cytoplasmic hybrids bind to the pattern recognition receptors cGAS and TLR3 (ref. 8), activating IRF3 and inducing apoptosis. Excised hybrids and an R-loop-induced innate immune response were also observed in SETX-mutated cells from patients with ataxia oculomotor apraxia type 2 (ref. 9) and in BRCA1-mutated cancer cells10. These findings establish RNA-DNA hybrids as immunogenic species that aberrantly accumulate in the cytoplasm after R-loop processing, linking R-loop accumulation to cell death through the innate immune response. Aberrant R-loop processing and subsequent innate immune activation may contribute to many diseases, such as neurodegeneration and cancer.
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Affiliation(s)
- Magdalena P Crossley
- Department of Chemical and Systems Biology, Stanford University, Stanford, CA, USA
| | - Chenlin Song
- Department of Chemical and Systems Biology, Stanford University, Stanford, CA, USA
| | - Michael J Bocek
- Department of Chemical and Systems Biology, Stanford University, Stanford, CA, USA
| | - Jun-Hyuk Choi
- Department of Chemical and Systems Biology, Stanford University, Stanford, CA, USA
- Biometrology Group, Division of Chemical and Biological Metrology, Korea Research Institute of Standards and Science, Daejeon, South Korea
- Department of Bio-Analytical Science, University of Science & Technology, Daejeon, South Korea
| | - Joseph N Kousouros
- Department of Chemical and Systems Biology, Stanford University, Stanford, CA, USA
| | - Ataya Sathirachinda
- Department of Chemical and Systems Biology, Stanford University, Stanford, CA, USA
| | - Cindy Lin
- Department of Chemical Engineering, Stanford University, Stanford, CA, USA
- Department of Genetics, Stanford University, Stanford, CA, USA
- The Institute for Chemistry, Engineering & Medicine for Human Health (ChEM-H), Stanford University, Stanford, CA, USA
| | - Joshua R Brickner
- Department of Chemical and Systems Biology, Stanford University, Stanford, CA, USA
| | - Gongshi Bai
- Department of Chemical and Systems Biology, Stanford University, Stanford, CA, USA
| | - Hannes Lans
- Department of Molecular Genetics, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Wim Vermeulen
- Department of Molecular Genetics, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Monther Abu-Remaileh
- Department of Chemical Engineering, Stanford University, Stanford, CA, USA
- Department of Genetics, Stanford University, Stanford, CA, USA
- The Institute for Chemistry, Engineering & Medicine for Human Health (ChEM-H), Stanford University, Stanford, CA, USA
| | - Karlene A Cimprich
- Department of Chemical and Systems Biology, Stanford University, Stanford, CA, USA.
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Choi JH, Lee SH, Choi JM, Kim HY, Shin ES. Sex difference in 5-year relative survival following percutaneous coronary intervention. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Sex-specific survival following percutaneous coronary intervention (PCI) varies among studies. This might be clarified using relative survival, which adjusts observed survival in relation to that seen in sex- and age-matched general population. We investigated sex-specific relative survival after PCI.
Methods
A total of 48,783 patients were enrolled in the year 2011 Korean nationwide PCI cohort. Primary outcome was all-cause death. Observed and relative survival at 5 years conditional on surviving 0 days, 30 days, 1 year, and 2 years were assessed. Sex-specific differences in cardiovascular risk factors were adjusted via age-group stratified propensity score matching.
Results
In the unadjusted analyses, 15,710 female patients had a higher frequency of cardiovascular risk factors compared with 33,073 male patients. Both observed survival (hazard ratio [HR]=1.28, 95% confidence interval [CI]=1.22–1.34) and relative survival (HR=1.21, 95% CI: 1.16–1.27) were worse in female compared with male (p<0.001, all). In analyses of propensity score-matched 14,454 pairs, female showed a higher observed survival (HR=0.78, 95% CI: 0.74–0.82) but a lower relative survival (HR=1.19, 95% CI: 1.13–1.26) compared with male (p<0.001, all). Neither observed nor relative survival differed between female of age≤50s and age-matched male, but they were lower in female of age≥60s than age-matched male. These findings were consistent in further analyses conditional on surviving 30 days, 1 year, and 2 years.
Conclusions
The 5-year relative survival of female aged≥60 years adjusted by clinical risk factors was lower than that of age-matched male, which mandates the need for the excessive risk reduction in older female undergoing PCI.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- J H Choi
- Samsung Medical Center , Seoul , Korea (Republic of)
| | - S H Lee
- Samsung Medical Center , Seoul , Korea (Republic of)
| | - J M Choi
- Samsung Medical Center , Seoul , Korea (Republic of)
| | - H Y Kim
- Chonnam National University Hospital , Gwangju , Korea (Republic of)
| | - E S Shin
- Ulsan University Hospital , Ulsan , Korea (Republic of)
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Choi JH, Joo CH. Match activity profile of professional female soccer players during a season. J Exerc Rehabil 2022; 18:324-329. [PMID: 36420471 PMCID: PMC9650312 DOI: 10.12965/jer.2244354.177] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Accepted: 08/28/2022] [Indexed: 02/23/2024] Open
Abstract
It is necessary to understand movement characteristics of elite female soccer players during a match to develop effective training program. The purpose of this study is to analyze the physical demands of Korean female professional soccer players during a competitive season. Twenty-four female professional players (age: 27.8±3.9 years; height: 165.7± 5.1 cm) from a team, belonging to the women's professional soccer league in South Korea participated in the study. The players participated in 11 home matches and 10 away matches from April 26 to November 9 of the 2011 season. Body weight and body mass index decreased during the first half-season compared to the preseason (P<0.05), and the decreased values were maintained until the second half-season. Total distance covered by the players was more than 9.5 km per match. No difference was found in the total distance, movement distance by exercise intensities, number of sprints and accelerations, and maximum speed between the first half- and second half-seasons. Midfielders covered the most distance during a match compared to other positions (P<0.05). Wing forward covered the most distance of high-intensity exercise. Maximum speed during the match was higher among wing forward and forward than in other positions (P<0.05). There were no significant differences between home and away matches in all variables (P>0.05). In conclusion, in order to improve the performance of female soccer players and prevent injuries, a training program should be constructed that considers the characteristics of each player and playing position rather than uniform training in a team.
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Affiliation(s)
- Jun-Hyuk Choi
- Department of Football Science, Honam University, Gwangju,
Korea
| | - Chang-Hwa Joo
- Department of Sport Science, Kangwon National University, Chuncheon,
Korea
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Kwak JS, Lee Y, Yang J, Kim SK, Shin Y, Kim HJ, Choi JH, Im YJ, Kim MJ, Lee Yu K, Chang You J, Chun JS. Characterization of rhodanine derivatives as potential disease-modifying drugs for experimental mouse osteoarthritis. Osteoarthritis Cartilage 2022; 30:1210-1221. [PMID: 35513246 DOI: 10.1016/j.joca.2022.04.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 04/22/2022] [Accepted: 04/26/2022] [Indexed: 02/02/2023]
Abstract
OBJECTIVE This study was performed to characterize selected rhodanine derivatives as potential preclinical disease-modifying drugs for experimental osteoarthritis (OA) in mice. METHODS Three rhodanine derivatives, designated rhodanine (R)-501, R-502, and R-503, were selected as candidate OA disease-modifying drugs. Their effects were evaluated by intra-articular (IA) injection in OA mouse models induced by DMM (destabilization of the medial meniscus) or adenoviral overexpression in joint tissues of hypoxia-inducible factor (HIF)-2α or zinc importer ZIP8. The regulatory mechanisms impacted by the rhodanine derivatives were examined in primary-culture chondrocytes and fibroblast-like synoviocytes (FLS). RESULTS All three rhodanine derivatives inhibited OA development caused by DMM or overexpression of HIF-2α or ZIP8. Compared to vehicle-treated group, for example, IA injection of R-501 in DMM-operated mice reduced median OARSI grade from 3.78 (IQR 3.00-5.00) to 1.89 (IQR 0.94-2.00, P = 0.0001). R-502 and R-503 also reduced from 3.67 (IQR 2.11-4.56) to 2.00 (IQR 1.00-2.00, P = 0.0030) and 2.00 (IQR 1.83-2.67, P = 0.0378), respectively. Mechanistically, the rhodanine derivatives inhibited the nuclear localization and transcriptional activity of HIF-2α in chondrocytes and FLS. They did not bind to Zn2+ or modulate Zn2+ homeostasis in chondrocytes or FLS; instead, they inhibited the nuclear localization and transcriptional activity of the Zn2+-dependent transcription factor, MTF1. HIF-2α, ZIP8, and interleukin-1β could upregulate matrix-degrading enzymes in chondrocytes and FLS, and the rhodanine derivatives inhibited these effects. CONCLUSION IA administration of rhodanine derivatives significantly reduced OA pathogenesis in various mouse models, demonstrating that these derivatives have disease-modifying therapeutic potential against OA pathogenesis.
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Affiliation(s)
- J-S Kwak
- National Creative Research Initiatives Center for Osteoarthritis Pathogenesis and School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Y Lee
- National Creative Research Initiatives Center for Osteoarthritis Pathogenesis and School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - J Yang
- National Creative Research Initiatives Center for Osteoarthritis Pathogenesis and School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - S K Kim
- National Creative Research Initiatives Center for Osteoarthritis Pathogenesis and School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Y Shin
- National Creative Research Initiatives Center for Osteoarthritis Pathogenesis and School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - H-J Kim
- National Creative Research Initiatives Center for Osteoarthritis Pathogenesis and School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - J H Choi
- National Creative Research Initiatives Center for Osteoarthritis Pathogenesis and School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Y J Im
- College of Pharmacy, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - M-J Kim
- Avixgen Inc., Seoul, 06649, Republic of Korea
| | - K Lee Yu
- National Research Laboratory for Molecular Virology, Department of Pathology, School of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea
| | - J Chang You
- Avixgen Inc., Seoul, 06649, Republic of Korea; National Research Laboratory for Molecular Virology, Department of Pathology, School of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea
| | - J-S Chun
- National Creative Research Initiatives Center for Osteoarthritis Pathogenesis and School of Life Sciences, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea.
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Lee S, Choi JH, Truong HA, Lee YJ, Lee H. Enhanced nitrate reductase activity offers Arabidopsis ecotype Landsberg erecta better salt stress resistance than Col-0. Plant Biol (Stuttg) 2022; 24:854-862. [PMID: 35357062 DOI: 10.1111/plb.13420] [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: 01/05/2022] [Accepted: 03/08/2022] [Indexed: 06/14/2023]
Abstract
The nitrogen utilization efficiency of plants varies depending on the plant species. In modern agriculture, nitrogen fertilizer is used to increase crop production, with the amount of fertilizer addition increasing steadily worldwide. This study included the two most used ecotypes of Arabidopsis thaliana, Landsberg erecta (Ler) and Col-0, which were used to identify differences at the molecular level. We found that the efficiency of nitrogen utilization and salt stress resistance differed between these two ecotypes of the same species. We demonstrated distinct salt stress resistance between Ler and Col-0 depending on the differences in nitrate level, which was explained by different regulation of the NIA2 gene expression in these two ecotypes. Our results demonstrate that the genes and promoters regulate expression of these genes and contribute to trait differences. Further studies are required on genes and promoter elements for an improved understanding of the salinity stress resistance mechanism in plants.
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Affiliation(s)
- S Lee
- Department of Plant Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Republic of Korea
| | - J H Choi
- Department of Plant Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Republic of Korea
| | - H A Truong
- Department of Plant Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Republic of Korea
| | - Y J Lee
- Department of Plant Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Republic of Korea
- Institute of Life Science and Natural Resources, Korea University, Seoul, Republic of Korea
| | - H Lee
- Department of Plant Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Republic of Korea
- Institute of Life Science and Natural Resources, Korea University, Seoul, Republic of Korea
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11
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Abstract
With the increase of the adult orthodontic population, there is a need for an accurate and evidence-based prediction of the posttreatment face in 3 dimensions (3D). The objectives of this study are 1) to develop a 3D postorthodontic face prediction method based on a deep learning network using the patient-specific factors and orthodontic treatment conditions and 2) to validate the accuracy and clinical usability of the proposed method. Paired sets (n = 268) of pretreatment (T1) and posttreatment (T2) cone-beam computed tomography (CBCT) of adult patients were trained with a conditional generative adversarial network to generate 3D posttreatment facial data based on the patient's gender, age, and the changes of upper (ΔU1) and lower incisor position (ΔL1) as input. The accuracy was calculated with prediction error and mean absolute distances between real T2 (T2) and predicted T2 (PT2) near 6 perioral landmark regions, as well as percentage of prediction error less than 2 mm using test sets (n = 44). For qualitative evaluation, an online survey was conducted with experienced orthodontists as panels (n = 56). Overall, PT2 indicated similar 3D changes to the T2 face, with the most apparent changes simulated in the perioral regions. The mean prediction error was 1.2 ± 1.01 mm with 80.8% accuracy. More than 50% of the experienced orthodontists were unable to distinguish between real and predicted images. In this study, we proposed a valid 3D postorthodontic face prediction method by applying a deep learning algorithm trained with CBCT data sets.
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Affiliation(s)
- Y S Park
- Department of Orthodontics, The Institute of Craniofacial Deformity, Yonsei University College of Dentistry, Seoul, Korea
| | - J H Choi
- Smile Future Orthodontics, Seoul, Korea.,Department of Orthodontics, School of Dentistry, Seoul National University, Seoul, Korea
| | - Y Kim
- Imagoworks Inc., Seoul, Korea
| | - S H Choi
- Department of Orthodontics, The Institute of Craniofacial Deformity, Yonsei University College of Dentistry, Seoul, Korea
| | - J H Lee
- Department of Orthodontics, The Institute of Craniofacial Deformity, Yonsei University College of Dentistry, Seoul, Korea.,Department of Orthodontics, Gangnam Severance Hospital Yonsei University, Seoul, Korea
| | - K H Kim
- Department of Orthodontics, The Institute of Craniofacial Deformity, Yonsei University College of Dentistry, Seoul, Korea.,Department of Orthodontics, Gangnam Severance Hospital Yonsei University, Seoul, Korea
| | - C J Chung
- Department of Orthodontics, The Institute of Craniofacial Deformity, Yonsei University College of Dentistry, Seoul, Korea.,Department of Orthodontics, Gangnam Severance Hospital Yonsei University, Seoul, Korea
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12
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Lee JK, Choi JH, Kim BS, Shin YS. Recovery from Cranial Nerve Symptoms after Flow Diversion without Coiling for Unruptured Very Large and Giant ICA Aneurysms. AJNR Am J Neuroradiol 2022; 43:736-740. [PMID: 35450858 PMCID: PMC9089254 DOI: 10.3174/ajnr.a7498] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 03/08/2022] [Indexed: 12/30/2022]
Abstract
BACKGROUND AND PURPOSE Cranial nerve symptoms, including visual impairment and ophthalmoplegia, are one of the most common presentations of very large and giant (≥15 mm) ICA aneurysms. In this study, we evaluated the treatment outcomes of flow diversion and conventional coiling in terms of recovery from cranial nerve symptoms and postoperative complications. MATERIALS AND METHODS Seventy-nine patients with unruptured ICA aneurysms of >15 mm who were treated with flow diversion or conventional coiling between December 2009 and December 2020 were retrospectively evaluated. We compared the radiologic and clinical outcomes, including recovery from cranial nerve symptoms, between the 2 groups. RESULTS Twenty-eight of 49 patients (57.1%) treated with flow diversion and 10 of 30 patients (33.3%) treated with conventional coiling initially presented with cranial nerve symptoms (P = .068). In the clinical follow-up, the symptom recovery rate was significantly higher in those treated with flow diversion (15 [50%] versus 3 [25%] with conventional coiling, P = .046). Multivariate logistic regression analysis demonstrated that flow diversion was significantly associated with symptom recovery (OR, 7.425; 95% CI, 1.091-50.546; P = .040). The overall postoperative complication rate was similar (flow diversion, 10 [20.4%]; conventional coiling, 6 [20.0%], P = .965), though fatal hemorrhagic complications occurred only in patients with intradurally located aneurysms treated with flow diversion (4 [8.2%] versus 0 [0.0%] with coiling, P = .108). CONCLUSIONS Flow diversion without coiling for very large and giant ICA aneurysms yielded a higher rate of recovery from cranial nerve symptoms, but it may be related to an increased hemorrhagic complication rate, especially for intradurally located aneurysms.
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Affiliation(s)
- J K Lee
- From the Departments of Neurosurgery (J.K.L., J.H.C., Y.S.S.)
| | - J H Choi
- From the Departments of Neurosurgery (J.K.L., J.H.C., Y.S.S.)
| | - B-S Kim
- Radiology (B.-S.K.), Seoul St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, South Korea
| | - Y S Shin
- From the Departments of Neurosurgery (J.K.L., J.H.C., Y.S.S.)
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13
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Kim SH, Kim GH, Kemp MG, Choi JH. TREX1 degrades the 3' end of the small DNA oligonucleotide products of nucleotide excision repair in human cells. Nucleic Acids Res 2022; 50:3974-3984. [PMID: 35357486 PMCID: PMC9023299 DOI: 10.1093/nar/gkac214] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 03/02/2022] [Accepted: 03/18/2022] [Indexed: 01/01/2023] Open
Abstract
The nucleotide excision repair (NER) machinery removes UV photoproducts from DNA in the form of small, excised damage-containing DNA oligonucleotides (sedDNAs) ∼30 nt in length. How cells process and degrade these byproducts of DNA repair is not known. Using a small scale RNA interference screen in UV-irradiated human cells, we identified TREX1 as a major regulator of sedDNA abundance. Knockdown of TREX1 increased the level of sedDNAs containing the two major UV photoproducts and their association with the NER proteins TFIIH and RPA. Overexpression of wild-type but not nuclease-inactive TREX1 significantly diminished sedDNA levels, and studies with purified recombinant TREX1 showed that the enzyme efficiently degrades DNA located 3′ of the UV photoproduct in the sedDNA. Knockdown or overexpression of TREX1 did not impact the overall rate of UV photoproduct removal from genomic DNA or cell survival, which indicates that TREX1 function in sedDNA degradation does not impact NER efficiency. Taken together, these results indicate a previously unknown role for TREX1 in promoting the degradation of the sedDNA products of the repair reaction. Because TREX1 mutations and inefficient DNA degradation impact inflammatory and immune signaling pathways, the regulation of sedDNA degradation by TREX1 may contribute to photosensitive skin disorders.
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Affiliation(s)
- Seon Hee Kim
- Biometrology Group, Division of Chemical and Biological Metrology, Korea Research Institute of Standards and Science, Daejeon 305-340, Republic of Korea.,Department of Bio-Analytical Science, University of Science & Technology, Daejeon 305-340, Republic of Korea
| | - Geun Hoe Kim
- Biometrology Group, Division of Chemical and Biological Metrology, Korea Research Institute of Standards and Science, Daejeon 305-340, Republic of Korea.,Department of Bio-Analytical Science, University of Science & Technology, Daejeon 305-340, Republic of Korea
| | - Michael G Kemp
- Department of Pharmacology and Toxicology, Wright State University Boonshoft School of Medicine, Dayton, OH 45435, USA.,Dayton Veterans Administration Medical Center, Dayton, OH 45428, USA
| | - Jun-Hyuk Choi
- Biometrology Group, Division of Chemical and Biological Metrology, Korea Research Institute of Standards and Science, Daejeon 305-340, Republic of Korea.,Department of Bio-Analytical Science, University of Science & Technology, Daejeon 305-340, Republic of Korea
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14
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van Toorn M, Turkyilmaz Y, Han S, Zhou D, Kim HS, Salas-Armenteros I, Kim M, Akita M, Wienholz F, Raams A, Ryu E, Kang S, Theil AF, Bezstarosti K, Tresini M, Giglia-Mari G, Demmers JA, Schärer OD, Choi JH, Vermeulen W, Marteijn JA. Active DNA damage eviction by HLTF stimulates nucleotide excision repair. Mol Cell 2022; 82:1343-1358.e8. [PMID: 35271816 PMCID: PMC9473497 DOI: 10.1016/j.molcel.2022.02.020] [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: 09/30/2020] [Revised: 10/15/2021] [Accepted: 02/10/2022] [Indexed: 10/18/2022]
Abstract
Nucleotide excision repair (NER) counteracts the onset of cancer and aging by removing helix-distorting DNA lesions via a "cut-and-patch"-type reaction. The regulatory mechanisms that drive NER through its successive damage recognition, verification, incision, and gap restoration reaction steps remain elusive. Here, we show that the RAD5-related translocase HLTF facilitates repair through active eviction of incised damaged DNA together with associated repair proteins. Our data show a dual-incision-dependent recruitment of HLTF to the NER incision complex, which is mediated by HLTF's HIRAN domain that binds 3'-OH single-stranded DNA ends. HLTF's translocase motor subsequently promotes the dissociation of the stably damage-bound incision complex together with the incised oligonucleotide, allowing for an efficient PCNA loading and initiation of repair synthesis. Our findings uncover HLTF as an important NER factor that actively evicts DNA damage, thereby providing additional quality control by coordinating the transition between the excision and DNA synthesis steps to safeguard genome integrity.
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Affiliation(s)
- Marvin van Toorn
- Department of Molecular Genetics, Oncode Institute, Erasmus MC Cancer Institute, Erasmus University Medical Centre, Rotterdam, the Netherlands
| | - Yasemin Turkyilmaz
- Department of Molecular Genetics, Oncode Institute, Erasmus MC Cancer Institute, Erasmus University Medical Centre, Rotterdam, the Netherlands
| | - Sueji Han
- Center for Bioanalysis, Korea Research Institute of Standards and Science, Daejeon 305-340, Republic of Korea; Department of Bio-Analytical Science, University of Science & Technology, Daejeon 305-350, Republic of Korea
| | - Di Zhou
- Department of Molecular Genetics, Oncode Institute, Erasmus MC Cancer Institute, Erasmus University Medical Centre, Rotterdam, the Netherlands
| | - Hyun-Suk Kim
- Center for Genomic Integrity, Institute for Basic Science, Ulsan 44919, Republic of Korea
| | - Irene Salas-Armenteros
- Department of Molecular Genetics, Oncode Institute, Erasmus MC Cancer Institute, Erasmus University Medical Centre, Rotterdam, the Netherlands
| | - Mihyun Kim
- Center for Genomic Integrity, Institute for Basic Science, Ulsan 44919, Republic of Korea; Department of Biological Sciences, Ulsan National Institute of Science and Technology, Ulsan 44919, Republic of Korea
| | - Masaki Akita
- Department of Molecular Genetics, Oncode Institute, Erasmus MC Cancer Institute, Erasmus University Medical Centre, Rotterdam, the Netherlands
| | - Franziska Wienholz
- Department of Molecular Genetics, Oncode Institute, Erasmus MC Cancer Institute, Erasmus University Medical Centre, Rotterdam, the Netherlands
| | - Anja Raams
- Department of Molecular Genetics, Oncode Institute, Erasmus MC Cancer Institute, Erasmus University Medical Centre, Rotterdam, the Netherlands
| | - Eunjin Ryu
- Center for Genomic Integrity, Institute for Basic Science, Ulsan 44919, Republic of Korea; Department of Biological Sciences, Ulsan National Institute of Science and Technology, Ulsan 44919, Republic of Korea
| | - Sukhyun Kang
- Center for Genomic Integrity, Institute for Basic Science, Ulsan 44919, Republic of Korea
| | - Arjan F Theil
- Department of Molecular Genetics, Oncode Institute, Erasmus MC Cancer Institute, Erasmus University Medical Centre, Rotterdam, the Netherlands
| | - Karel Bezstarosti
- Proteomics Centre, Erasmus University Medical Centre, Rotterdam, the Netherlands
| | - Maria Tresini
- Department of Molecular Genetics, Oncode Institute, Erasmus MC Cancer Institute, Erasmus University Medical Centre, Rotterdam, the Netherlands
| | - Giuseppina Giglia-Mari
- Institut NeuroMyoGène (INMG), CNRS UMR 5310, INSERM U1217, Université de Lyon, Université Claude Bernard Lyon1, 16 rue Dubois, 69622 Villeurbanne Cedex, France
| | - Jeroen A Demmers
- Proteomics Centre, Erasmus University Medical Centre, Rotterdam, the Netherlands
| | - Orlando D Schärer
- Center for Genomic Integrity, Institute for Basic Science, Ulsan 44919, Republic of Korea; Department of Biological Sciences, Ulsan National Institute of Science and Technology, Ulsan 44919, Republic of Korea
| | - Jun-Hyuk Choi
- Center for Bioanalysis, Korea Research Institute of Standards and Science, Daejeon 305-340, Republic of Korea; Department of Bio-Analytical Science, University of Science & Technology, Daejeon 305-350, Republic of Korea
| | - Wim Vermeulen
- Department of Molecular Genetics, Oncode Institute, Erasmus MC Cancer Institute, Erasmus University Medical Centre, Rotterdam, the Netherlands
| | - Jurgen A Marteijn
- Department of Molecular Genetics, Oncode Institute, Erasmus MC Cancer Institute, Erasmus University Medical Centre, Rotterdam, the Netherlands.
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15
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Khan S, Cvammen W, Anabtawi N, Choi JH, Kemp MG. XPA is susceptible to proteolytic cleavage by cathepsin L during lysis of quiescent cells. DNA Repair (Amst) 2022; 109:103260. [PMID: 34883264 PMCID: PMC8748394 DOI: 10.1016/j.dnarep.2021.103260] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 11/22/2021] [Accepted: 11/30/2021] [Indexed: 01/03/2023]
Abstract
The xeroderma pigmentosum group A (XPA) protein plays an essential role in the removal of UV photoproducts and other bulky lesions from DNA as a component of the nucleotide excision repair (NER) machinery. Using cell lysates prepared from confluent cultures of human cells and from human skin epidermis, we observed an additional XPA antibody-reactive band on immunoblots that was approximately 3-4 kDa smaller than the native, full-length XPA protein. Biochemical studies revealed this smaller molecular weight XPA species to be due to proteolysis at the C-terminus of the protein, which negatively impacted the ability of XPA to interact with the NER protein TFIIH. Further work identified the endopeptidase cathepsin L, which is expressed at higher levels in quiescent cells, as the protease responsible for cleaving XPA during cell lysis. These results suggest that supplementation of lysis buffers with inhibitors of cathepsin L is important to prevent cleavage of XPA during lysis of confluent cells.
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Affiliation(s)
- Saman Khan
- Department of Pharmacology and Toxicology, Wright State University Boonshoft School of Medicine, Dayton, Ohio
| | - William Cvammen
- Department of Pharmacology and Toxicology, Wright State University Boonshoft School of Medicine, Dayton, Ohio
| | - Nadeen Anabtawi
- Department of Pharmacology and Toxicology, Wright State University Boonshoft School of Medicine, Dayton, Ohio
| | - Jun-Hyuk Choi
- Biometrology Group, Division of Chemical and Biological Metrology, Korea Research Institute of Standards and Science, Daejeon 305-340, Republic of Korea;,Department of Bio-Analytical Science, University of Science & Technology, Daejeon 305-340, Republic of Korea
| | - Michael G. Kemp
- Department of Pharmacology and Toxicology, Wright State University Boonshoft School of Medicine, Dayton, Ohio;,Dayton Veterans Administration Medical Center, Dayton, Ohio,To whom correspondence should be addressed:
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16
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Gonzalez FM, Fries EM, Cude-Woods C, Bailey T, Blatnik M, Broussard LJ, Callahan NB, Choi JH, Clayton SM, Currie SA, Dawid M, Dees EB, Filippone BW, Fox W, Geltenbort P, George E, Hayen L, Hickerson KP, Hoffbauer MA, Hoffman K, Holley AT, Ito TM, Komives A, Liu CY, Makela M, Morris CL, Musedinovic R, O'Shaughnessy C, Pattie RW, Ramsey J, Salvat DJ, Saunders A, Sharapov EI, Slutsky S, Su V, Sun X, Swank C, Tang Z, Uhrich W, Vanderwerp J, Walstrom P, Wang Z, Wei W, Young AR. Improved Neutron Lifetime Measurement with UCNτ. Phys Rev Lett 2021; 127:162501. [PMID: 34723594 DOI: 10.1103/physrevlett.127.162501] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 07/20/2021] [Indexed: 06/13/2023]
Abstract
We report an improved measurement of the free neutron lifetime τ_{n} using the UCNτ apparatus at the Los Alamos Neutron Science Center. We count a total of approximately 38×10^{6} surviving ultracold neutrons (UCNs) after storing in UCNτ's magnetogravitational trap over two data acquisition campaigns in 2017 and 2018. We extract τ_{n} from three blinded, independent analyses by both pairing long and short storage time runs to find a set of replicate τ_{n} measurements and by performing a global likelihood fit to all data while self-consistently incorporating the β-decay lifetime. Both techniques achieve consistent results and find a value τ_{n}=877.75±0.28_{stat}+0.22/-0.16_{syst} s. With this sensitivity, neutron lifetime experiments now directly address the impact of recent refinements in our understanding of the standard model for neutron decay.
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Affiliation(s)
- F M Gonzalez
- Department of Physics, Indiana University, Bloomington, Indiana 47405, USA
- Center for Exploration of Energy and Matter, Indiana University, Bloomington, Indiana 47405, USA
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - E M Fries
- Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125, USA
| | - C Cude-Woods
- Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - T Bailey
- Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - M Blatnik
- Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125, USA
| | - L J Broussard
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - N B Callahan
- Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - J H Choi
- Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - S M Clayton
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - S A Currie
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - M Dawid
- Department of Physics, Indiana University, Bloomington, Indiana 47405, USA
- Center for Exploration of Energy and Matter, Indiana University, Bloomington, Indiana 47405, USA
| | - E B Dees
- Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - B W Filippone
- Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125, USA
| | - W Fox
- Department of Physics, Indiana University, Bloomington, Indiana 47405, USA
- Center for Exploration of Energy and Matter, Indiana University, Bloomington, Indiana 47405, USA
| | - P Geltenbort
- Institut Laue-Langevin, CS 20156, 38042 Grenoble Cedex 9, France
| | - E George
- Tennessee Technological University, Cookeville, Tennessee 38505, USA
| | - L Hayen
- Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - K P Hickerson
- Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125, USA
| | - M A Hoffbauer
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - K Hoffman
- Tennessee Technological University, Cookeville, Tennessee 38505, USA
| | - A T Holley
- Tennessee Technological University, Cookeville, Tennessee 38505, USA
| | - T M Ito
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - A Komives
- DePauw University, Greencastle, Indiana 46135, USA
| | - C-Y Liu
- Department of Physics, Indiana University, Bloomington, Indiana 47405, USA
- Center for Exploration of Energy and Matter, Indiana University, Bloomington, Indiana 47405, USA
| | - M Makela
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - C L Morris
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - R Musedinovic
- Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - C O'Shaughnessy
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - R W Pattie
- East Tennessee State University, Johnson City, Tennessee 37614, USA
| | - J Ramsey
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - D J Salvat
- Department of Physics, Indiana University, Bloomington, Indiana 47405, USA
- Center for Exploration of Energy and Matter, Indiana University, Bloomington, Indiana 47405, USA
| | - A Saunders
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - E I Sharapov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - S Slutsky
- Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125, USA
| | - V Su
- Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125, USA
| | - X Sun
- Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125, USA
| | - C Swank
- Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125, USA
| | - Z Tang
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - W Uhrich
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - J Vanderwerp
- Department of Physics, Indiana University, Bloomington, Indiana 47405, USA
- Center for Exploration of Energy and Matter, Indiana University, Bloomington, Indiana 47405, USA
| | - P Walstrom
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - Z Wang
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - W Wei
- Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125, USA
| | - A R Young
- Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
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17
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Jeong JH, Choi JH, Kim KT, Lee SJ, Kim DJ, Kim HM. Multi-Domain Convolutional Neural Networks for Lower-Limb Motor Imagery Using Dry vs. Wet Electrodes. Sensors (Basel) 2021; 21:s21196672. [PMID: 34640992 PMCID: PMC8513081 DOI: 10.3390/s21196672] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 10/04/2021] [Accepted: 10/05/2021] [Indexed: 11/29/2022]
Abstract
Motor imagery (MI) brain–computer interfaces (BCIs) have been used for a wide variety of applications due to their intuitive matching between the user’s intentions and the performance of tasks. Applying dry electroencephalography (EEG) electrodes to MI BCI applications can resolve many constraints and achieve practicality. In this study, we propose a multi-domain convolutional neural networks (MD-CNN) model that learns subject-specific and electrode-dependent EEG features using a multi-domain structure to improve the classification accuracy of dry electrode MI BCIs. The proposed MD-CNN model is composed of learning layers for three domain representations (time, spatial, and phase). We first evaluated the proposed MD-CNN model using a public dataset to confirm 78.96% classification accuracy for multi-class classification (chance level accuracy: 30%). After that, 10 healthy subjects participated and performed three classes of MI tasks related to lower-limb movement (gait, sitting down, and resting) over two sessions (dry and wet electrodes). Consequently, the proposed MD-CNN model achieved the highest classification accuracy (dry: 58.44%; wet: 58.66%; chance level accuracy: 43.33%) with a three-class classifier and the lowest difference in accuracy between the two electrode types (0.22%, d = 0.0292) compared with the conventional classifiers (FBCSP, EEGNet, ShallowConvNet, and DeepConvNet) that used only a single domain. We expect that the proposed MD-CNN model could be applied for developing robust MI BCI systems with dry electrodes.
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Affiliation(s)
- Ji-Hyeok Jeong
- Biomedical Research Division, Bionics Research Center, Korea Institute of Science and Technology, Seoul 02792, Korea; (J.-H.J.); (J.-H.C.); (K.-T.K.); (S.-J.L.)
- Department of Brain and Cognitive Engineering, Korea University, Seoul 02841, Korea
| | - Jun-Hyuk Choi
- Biomedical Research Division, Bionics Research Center, Korea Institute of Science and Technology, Seoul 02792, Korea; (J.-H.J.); (J.-H.C.); (K.-T.K.); (S.-J.L.)
- Division of Bio-Medical Science & Technology, KIST School, Korea University of Science and Technology, Seoul 02792, Korea
| | - Keun-Tae Kim
- Biomedical Research Division, Bionics Research Center, Korea Institute of Science and Technology, Seoul 02792, Korea; (J.-H.J.); (J.-H.C.); (K.-T.K.); (S.-J.L.)
| | - Song-Joo Lee
- Biomedical Research Division, Bionics Research Center, Korea Institute of Science and Technology, Seoul 02792, Korea; (J.-H.J.); (J.-H.C.); (K.-T.K.); (S.-J.L.)
- Division of Bio-Medical Science & Technology, KIST School, Korea University of Science and Technology, Seoul 02792, Korea
| | - Dong-Joo Kim
- Department of Brain and Cognitive Engineering, Korea University, Seoul 02841, Korea
- Department of Neurology, Korea University College of Medicine, Seoul 02841, Korea
- Department of Artificial Intelligence, Korea University, Seoul 02841, Korea
- Correspondence: (D.-J.K.); (H.-M.K.)
| | - Hyung-Min Kim
- Biomedical Research Division, Bionics Research Center, Korea Institute of Science and Technology, Seoul 02792, Korea; (J.-H.J.); (J.-H.C.); (K.-T.K.); (S.-J.L.)
- Division of Bio-Medical Science & Technology, KIST School, Korea University of Science and Technology, Seoul 02792, Korea
- Correspondence: (D.-J.K.); (H.-M.K.)
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18
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Shin H, Choi JH, Lee JY. Probing TGF-β1-induced cytoskeletal rearrangement by fluorescent-labeled silica nanoparticle uptake assay. Biochem Biophys Rep 2021; 28:101137. [PMID: 34584989 PMCID: PMC8453189 DOI: 10.1016/j.bbrep.2021.101137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 08/31/2021] [Accepted: 09/15/2021] [Indexed: 11/28/2022] Open
Abstract
Cytoskeletal proteins are essential in maintaining cell morphology, proliferation, and viability as well as internalizing molecules in phagocytic and non-phagocytic cells. Orderly aligned cytoskeletons are disturbed by a range of biological processes, such as the epithelial–mesenchymal transition, which is observed in cancer metastasis. Although many biological methods have been developed to detect cytoskeletal rearrangement, simple and quantitative in vitro approaches are still in great demand. Herein, we applied a flow cytometry-based nanoparticle uptake assay to measure the degree of cytoskeletal rearrangement induced by transforming growth factor β1 (TGF-β1). For the assay, silica nanoparticles, selected for their high biocompatibility, were fluorescent-labeled to facilitate quantification with flow cytometry. Human keratinocyte HaCaT cells were treated with different concentrations of TGF-β1 and then exposed to FITC-labeled silica nanoparticles. Increasing concentrations of TGF-β1 induced gradual changes in cytoskeletal rearrangement, as confirmed by conventional assays. The level of nanoparticle uptake increased by TGF-β1 treatment in a dose-dependent manner, indicating that our nanoparticle uptake assay can be used as a quick and non-destructive approach to measure cytoskeletal rearrangement. Fluorescent-labeled silica nanoparticles are used to quantify the level of cytoskeletal rearrangement of HaCaT cells following TGF-β1 treatment as measured by flow cytometry. Increasing concentrations of TGF-β1 stimulated cytoskeletal rearrangement of HaCaT cells which in turn increased cellular nanoparticle uptake. The nanoparticle uptake assay is a useful tool in semi-quantifying phenotypical changes in epidermal keratinocyte HaCaT cells by TGF-β1, which could help the understanding of the epithelial–mesenchymal transition.
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Affiliation(s)
- HyeRim Shin
- Biometrology Group, Division of Chemical and Biological Metrology, Korea Research Institute of Standards and Science, 267 Gajeong-ro, Yuseong-gu, Daejeon, 34113, Republic of Korea
| | - Jun-Hyuk Choi
- Biometrology Group, Division of Chemical and Biological Metrology, Korea Research Institute of Standards and Science, 267 Gajeong-ro, Yuseong-gu, Daejeon, 34113, Republic of Korea
| | - Ji Youn Lee
- Biometrology Group, Division of Chemical and Biological Metrology, Korea Research Institute of Standards and Science, 267 Gajeong-ro, Yuseong-gu, Daejeon, 34113, Republic of Korea
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Abstract
Lin28a has diverse functions including regulation of cancer, reprogramming and regeneration, but whether it promotes injury or is a protective reaction to renal injury is unknown. We studied how Lin28a acts in unilateral ureteral obstruction (UUO)-induced renal fibrosis following unilateral ureteral obstruction, in a mouse model. We further defined the role of Lin28a in transforming growth factor (TGF)-signaling pathways in renal fibrosis through in vitro study using human tubular epithelium-like HK-2 cells. In the mouse unilateral ureteral obstruction model, obstruction markedly decreased the expression of Lin28a, increased the expression of renal fibrotic markers such as type I collagen, α-SMA, vimentin and fibronectin. In TGF-β-stimulated HK-2 cells, the expression of Lin28a was reduced and the expression of renal fibrotic markers such as type I collagen, α-SMA, vimentin and fibronectin was increased. Adenovirus-mediated overexpression of Lin28a inhibited the expression of TGF-β-stimulated type I collagen, α-SMA, vimentin and fibronectin. Lin28a inhibited TGF-β-stimulated SMAD3 activity, via inhibition of SMAD3 phos-phorylation, but not the MAPK pathway ERK, JNK or p38. Lin28a attenuates renal fibrosis in obstructive nephropathy, making its mechanism a possible therapeutic target for chronic kidney disease.
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Affiliation(s)
- Gwon-Soo Jung
- New Drug Development Center, Daegu-Gyeongbuk Medical Innovation Foundation, Daegu 41061, Korea
| | - Yeo Jin Hwang
- Division of Electronics & Information System, Daegu Gyeongbuk Institute of Science and Technology, Daegu 42988, Korea
| | - Jun-Hyuk Choi
- Division of Biotechnology, Daegu Gyeongbuk Institute of Science and Technology, Daegu 42988, Korea
| | - Kyeong-Min Lee
- Division of Biotechnology, Daegu Gyeongbuk Institute of Science and Technology, Daegu 42988, Korea
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Hwang I, Kim M, Yu J, Lee J, Choi JH, Park SA, Chang WS, Lee J, Jung JY. Ultrasensitive Molecule Detection Based on Infrared Metamaterial Absorber with Vertical Nanogap. Small Methods 2021; 5:e2100277. [PMID: 34927875 DOI: 10.1002/smtd.202100277] [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] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 04/22/2021] [Indexed: 05/14/2023]
Abstract
Surface-enhanced infrared absorption (SEIRA) spectroscopy is a powerful methodology for sensing and identifying small quantities of analyte molecules via coupling between molecular vibrations and an enhanced near-field induced in engineered structures. A metamaterial absorber (MA) is proposed as an efficient SEIRA platform; however, its efficiency is limited because it requires the appropriate insulator thickness and has a limited accessible area for sensing. SEIRA spectroscopy is proposed using an MA with a 10 nm thick vertical nanogap, and a record-high reflection difference SEIRA signal of 36% is experimentally achieved using a 1-octadecanethiol monolayer target molecule. Theoretical and experimental comparative studies are conducted using MAs with three different vertical nanogaps. The MAs with a vertical nanogap are processed using nanoimprint lithography and isotropic dry etching, which allow cost-effective large-area patterning and mass production. The proposed structure may provide promising routes for ultrasensitive sensing and detection applications.
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Affiliation(s)
- Inyong Hwang
- Department of Electrical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Mingyun Kim
- Department of Electrical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
- Nano-Convergence Mechanical Systems Research Division, Korea Institute of Machinery and Materials (KIMM), Daejeon, 305-343, Republic of Korea
| | - Jaeyeon Yu
- Department of Electrical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Jihye Lee
- Nano-Convergence Mechanical Systems Research Division, Korea Institute of Machinery and Materials (KIMM), Daejeon, 305-343, Republic of Korea
| | - Jun-Hyuk Choi
- Nano-Convergence Mechanical Systems Research Division, Korea Institute of Machinery and Materials (KIMM), Daejeon, 305-343, Republic of Korea
| | - Su A Park
- Nano-Convergence Mechanical Systems Research Division, Korea Institute of Machinery and Materials (KIMM), Daejeon, 305-343, Republic of Korea
| | - Won Seok Chang
- Nano-Convergence Mechanical Systems Research Division, Korea Institute of Machinery and Materials (KIMM), Daejeon, 305-343, Republic of Korea
| | - Jongwon Lee
- Department of Electrical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Republic of Korea
| | - Joo-Yun Jung
- Nano-Convergence Mechanical Systems Research Division, Korea Institute of Machinery and Materials (KIMM), Daejeon, 305-343, Republic of Korea
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21
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Kim J, Lee H, Choi JH, Park C, Lee B, Jung JY, Park JH, Lee J, Cho SJ. Preparation of multilayer periodic nanopatterned WO 3-based photoanode by reverse nanoimprinting for water splitting. Nanotechnology 2021; 32:395402. [PMID: 34082416 DOI: 10.1088/1361-6528/ac07ce] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 06/03/2021] [Indexed: 06/12/2023]
Abstract
Photoelectrochemical (PEC) water splitting has been studied extensively as an environmentally friendly technology for hydrogen production using solar energy. WO3is considered a promising semiconducting material for photoanodes due to its high electron mobility, good hole diffusion length, and chemical stability. Periodic nanostructures of WO3have been investigated for enhancing the PEC performance of WO3-based photoanodes. In this study, facile fabrication of periodic nanostructures of WO3was achieved using reverse nanoimprint lithography, and the multilayer stacking of nanopatterned WO3film was also confirmed. The multilayer nanopatterned WO3films were used as photoanodes for PEC water splitting. The performance of the fabricated photoanode in PEC was 2 times higher than that of planar WO3film due to its higher light absorbance and lower charge transfer resistance.
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Affiliation(s)
- Jungmin Kim
- School of Mechanical Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Hoyoung Lee
- Nano-Convergence Manufacturing Systems Research Division, Korea Institute of Machinery & Materials (KIMM), 171 Jang-dong, Yuseong-gu, Daejeon, 305-343, Republic of Korea
- Department of Chemical and Biomolecular Engineering Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Jun-Hyuk Choi
- Nano-Convergence Manufacturing Systems Research Division, Korea Institute of Machinery & Materials (KIMM), 171 Jang-dong, Yuseong-gu, Daejeon, 305-343, Republic of Korea
| | - Chan Park
- School of Mechanical Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Byeongjun Lee
- School of Mechanical Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Joo-Yun Jung
- Nano-Convergence Manufacturing Systems Research Division, Korea Institute of Machinery & Materials (KIMM), 171 Jang-dong, Yuseong-gu, Daejeon, 305-343, Republic of Korea
| | - Jong Hyeok Park
- Department of Chemical and Biomolecular Engineering Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Jihye Lee
- Nano-Convergence Manufacturing Systems Research Division, Korea Institute of Machinery & Materials (KIMM), 171 Jang-dong, Yuseong-gu, Daejeon, 305-343, Republic of Korea
| | - Seong J Cho
- School of Mechanical Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
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22
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Jung JY, Lee J, Choi JH, Choi DG, Jeong JH. Enhancement of refractive index sensing for an infrared plasmonic metamaterial absorber with a nanogap. Opt Express 2021; 29:22796-22804. [PMID: 34266034 DOI: 10.1364/oe.432392] [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] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 06/28/2021] [Indexed: 06/13/2023]
Abstract
An infrared plasmonic metamaterial absorber with a nanogap was numerically and experimentally investigated as a refractive index sensor. We experimentally demonstrated large enhancements of both sensitivity (approximately 1091 nm/refractive index unit) and figure of merit (FOM*; approximately 273) owing to the nanogap formation in the metamaterial absorber to achieve perfect absorption (99%). The refractive index sensing platform was fabricated by producible nanoimprint lithography and isotropic dry etching processes to have a large area and low cost while providing a practical solution for high-performance plasmonic biosensors.
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Bae HJ, Park YK, Cho DY, Choi JH, Kim BS, Shin YS. Predictors of the Effects of Flow Diversion in Very Large and Giant Aneurysms. AJNR Am J Neuroradiol 2021; 42:1099-1103. [PMID: 33926897 PMCID: PMC8191680 DOI: 10.3174/ajnr.a7085] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 12/24/2020] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE The treatment paradigm for very large and giant aneurysms has recently changed to flow diversion, in light of the results of the Pipeline for Uncoilable or Failed Aneurysms trial. However, the effects of flow diversion were definitely unknown. We explored this topic and identified the predictors of such effects. MATERIALS AND METHODS We retrospectively reviewed 51 patients with unruptured aneurysms admitted to our institution for flow diversion between February 2014 and August 2019. Patients were categorized into an effect group (no filling or remnant entry) and a no-effect group (subtotal or total filling). We evaluated the aneurysm size and shape, incorporation vessel, parent artery stenosis and curvature, stagnation of contrast medium within the aneurysm, use of balloon angioplasty, and intra-aneurysm thrombus as potential predictors of the effects of flow diversion. RESULTS The effect group comprised 34 patients (66.7%, 34/51; no filling, 35.3%, 18/51; and remnant entry, 31.4%, 16/51). The no-effect group comprised 17 patients (33.3%, 17/51; subtotal filling, 29.4%, 15/51; and total filling, 3.9%, 2/51). An incorporation vessel and balloon angioplasty were independent risk factors for the no-effect group in multivariate logistic regression analyses (OR = 0.13 and 0.05; 95% confidence intervals, 0.02-0.62 and 0.00-0.32; P values, .021 and .004, respectively). CONCLUSIONS Flow diversion is effective for very large and giant aneurysms, but the outcomes require further improvement. The results of this study show that an incorporated vessel and excessive balloon angioplasty might compromise flow diversion. This finding can help improve the outcomes of flow diversion.
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Affiliation(s)
- H J Bae
- From the Department of Neurosurgery (H.J.B.), Yeouido St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Korea
| | - Y K Park
- Department of Neurosurgery (Y.K.P.), Inje University Ilsan Paik Hospital, Goyang, Korea
| | - D Y Cho
- Department of Neurosurgery (D.Y.C.), Ewha Womans University, Seoul, Korea
| | - J H Choi
- Department of Neurosurgery (J.H.C., Y.S.S.), Seoul St. Mary's Hospital, The Catholic University of Korea College of Medicine. Seoul, Republic of Korea
| | - B S Kim
- Department of Radiology (B.S.K.), Seoul St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Korea
| | - Y S Shin
- Department of Neurosurgery (J.H.C., Y.S.S.), Seoul St. Mary's Hospital, The Catholic University of Korea College of Medicine. Seoul, Republic of Korea
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Tang Z, Watkins EB, Clayton SM, Currie SA, Fellers DE, Hassan MT, Hooks DE, Ito TM, Lawrence SK, MacDonald SWT, Makela M, Morris CL, Neukirch LP, Saunders A, O'Shaughnessy CM, Cude-Woods C, Choi JH, Young AR, Zeck BA, Gonzalez F, Liu CY, Floyd NC, Hickerson KP, Holley AT, Johnson BA, Lambert JC, Pattie RW. Ultracold neutron properties of the Eljen-299-02D deuterated scintillator. Rev Sci Instrum 2021; 92:023305. [PMID: 33648127 DOI: 10.1063/5.0030972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Accepted: 01/19/2021] [Indexed: 06/12/2023]
Abstract
In this paper, we report studies of the Fermi potential and loss per bounce of ultracold neutrons (UCNs) on a deuterated scintillator (Eljen-299-02D). These UCN properties of the scintillator enable its use in a wide variety of applications in fundamental neutron research.
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Affiliation(s)
- Z Tang
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - E B Watkins
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - S M Clayton
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - S A Currie
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - D E Fellers
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - Md T Hassan
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - D E Hooks
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - T M Ito
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - S K Lawrence
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - S W T MacDonald
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - M Makela
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - C L Morris
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - L P Neukirch
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - A Saunders
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | | | - C Cude-Woods
- North Carolina State University, Raleigh, North Carolina 27695, USA
| | - J H Choi
- North Carolina State University, Raleigh, North Carolina 27695, USA
| | - A R Young
- North Carolina State University, Raleigh, North Carolina 27695, USA
| | - B A Zeck
- North Carolina State University, Raleigh, North Carolina 27695, USA
| | - F Gonzalez
- Indiana University, Bloomington, Indiana 47405, USA
| | - C Y Liu
- Indiana University, Bloomington, Indiana 47405, USA
| | - N C Floyd
- University of Kentucky, Lexington, Kentucky 40506, USA
| | - K P Hickerson
- W. K. Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125, USA
| | - A T Holley
- Tennessee Technological University, Cookeville, Tennessee 38505, USA
| | - B A Johnson
- Utah State University, Logan, Utah 84322, USA
| | - J C Lambert
- Utah State University, Logan, Utah 84322, USA
| | - R W Pattie
- East Tennessee State University, Johnson City, Tennessee 37614, USA
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Choi JH, Jang HI, Jang JS, Jeon SH, Joo KK, Ju K, Jung DE, Kim JG, Kim JH, Kim JY, Kim SB, Kim SY, Kim W, Kwon E, Lee DH, Lee HG, Lim IT, Moon DH, Pac MY, Seo H, Seo JW, Shin CD, Yang BS, Yoo J, Yoon SG, Yeo IS, Yu I. Search for Sub-eV Sterile Neutrinos at RENO. Phys Rev Lett 2020; 125:191801. [PMID: 33216576 DOI: 10.1103/physrevlett.125.191801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 10/08/2020] [Accepted: 10/09/2020] [Indexed: 06/11/2023]
Abstract
We report a search result for a light sterile neutrino oscillation with roughly 2200 live days of data in the RENO experiment. The search is performed by electron antineutrino (ν[over ¯]_{e}) disappearance taking place between six 2.8 GW_{th} reactors and two identical detectors located at 294 m (near) and 1383 m (far) from the center of the reactor array. A spectral comparison between near and far detectors can explore reactor ν[over ¯]_{e} oscillations to a light sterile neutrino. An observed spectral difference is found to be consistent with that of the three-flavor oscillation model. This yields limits on sin^{2}2θ_{14} in the 10^{-4}≲|Δm_{41}^{2}|≲0.5 eV^{2} region, free from reactor ν[over ¯]_{e} flux and spectrum uncertainties. The RENO result provides the most stringent limits on sterile neutrino mixing at |Δm_{41}^{2}|≲0.002 eV^{2} using the ν[over ¯]_{e} disappearance channel.
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Affiliation(s)
- J H Choi
- Institute for High Energy Physics, Dongshin University, Naju 58245, Korea
| | - H I Jang
- Department of Fire Safety, Seoyeong University, Gwangju 61268, Korea
| | - J S Jang
- GIST College, Gwangju Institute of Science and Technology, Gwangju 61005, Korea
| | - S H Jeon
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
| | - K K Joo
- Institute for Universe and Elementary Particles, Chonnam National University, Gwangju 61186, Korea
| | - K Ju
- Department of Physics, KAIST, Daejeon 34141, Korea
| | - D E Jung
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
| | - J G Kim
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
| | - J H Kim
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
| | - J Y Kim
- Institute for Universe and Elementary Particles, Chonnam National University, Gwangju 61186, Korea
| | - S B Kim
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
| | - S Y Kim
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - W Kim
- Department of Physics, Kyungpook National University, Daegu 41566, Korea
| | - E Kwon
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
| | - D H Lee
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
| | - H G Lee
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - I T Lim
- Institute for Universe and Elementary Particles, Chonnam National University, Gwangju 61186, Korea
| | - D H Moon
- Institute for Universe and Elementary Particles, Chonnam National University, Gwangju 61186, Korea
| | - M Y Pac
- Institute for High Energy Physics, Dongshin University, Naju 58245, Korea
| | - H Seo
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - J W Seo
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
| | - C D Shin
- Institute for Universe and Elementary Particles, Chonnam National University, Gwangju 61186, Korea
| | - B S Yang
- Institute for Basic Science, Daejeon 34047, Korea
| | - J Yoo
- Department of Physics, KAIST, Daejeon 34141, Korea
- Institute for Basic Science, Daejeon 34047, Korea
| | - S G Yoon
- Department of Physics, KAIST, Daejeon 34141, Korea
| | - I S Yeo
- Institute for Universe and Elementary Particles, Chonnam National University, Gwangju 61186, Korea
| | - I Yu
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
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Choi JH, Cho DY, Shin YS, Kim BS. Intraprocedural Flat Panel Detector Rotational Angiography and an Image Fusion Technique for Delivery of a Microcatheter into the Targeted Shunt Pouch of a Dural Arteriovenous Fistula. AJNR Am J Neuroradiol 2020; 41:1876-1878. [PMID: 32819906 DOI: 10.3174/ajnr.a6724] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 06/03/2020] [Indexed: 11/07/2022]
Abstract
The accurate and safe delivery of a microcatheter to a targeted shunt pouch is essential for successful transvenous embolization of intracranial dural arteriovenous fistulas. However, complex anatomy and variations in head and neck veins and occluded sinuses can hinder intraprocedural microcatheter delivery. In this study, we introduce an intraprocedural flat panel detector rotational angiography and image fusion technique to aid precise navigation inside the veins and proper placement of the microcatheter in the targeted shunt pouch.
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Affiliation(s)
- J H Choi
- From the Departments of Neurosurgery (J.H.C., Y.S.S.)
| | - D Y Cho
- Department of Neurosurgery (D.Y.C.), Ewha Womans University Seoul Hospital, College of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - Y S Shin
- From the Departments of Neurosurgery (J.H.C., Y.S.S.)
| | - B-S Kim
- Radiology (B.-S.K.), Seoul St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Republic of Korea
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27
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Bae YU, Son Y, Kim CH, Kim KS, Hyun SH, Woo HG, Jee BA, Choi JH, Sung HK, Choi HC, Park SY, Bae JH, Doh KO, Kim JR. Embryonic Stem Cell-Derived mmu-miR-291a-3p Inhibits Cellular Senescence in Human Dermal Fibroblasts Through the TGF-β Receptor 2 Pathway. J Gerontol A Biol Sci Med Sci 2020; 74:1359-1367. [PMID: 30239625 DOI: 10.1093/gerona/gly208] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Indexed: 12/15/2022] Open
Abstract
Senescent cells accumulate in various tissues over time and contribute to tissue dysfunction and aging-associated phenotypes. Accumulating evidence suggests that cellular senescence can be inhibited through pharmacological intervention, as well as through treatment with soluble factors derived from embryonic stem cells (ESCs). In an attempt to investigate the anti-senescence factors secreted by ESCs, we analyzed mouse ESC-derived extracellular microRNAs in conditioned medium via microRNA array analysis. We selected mmu-miR-291a-3p as a putative anti-senescence factor via bioinformatics analysis. We validated its inhibitory effects on replicative, Adriamycin-induced, and ionizing radiation-induced senescence in human dermal fibroblasts. Treatment of senescent cells with mmu-miR-291a-3p decreased senescence-associated β-galactosidase activity, enhanced proliferative potential, and reduced mRNA and protein expression of TGF-β receptor 2, p53, and p21. mmu-miR-291a-3p in conditioned medium was enclosed in ESC-derived exosomes and exosomes purified from ESC conditioned medium inhibited cellular senescence. The inhibitory effects of mmu-miR-291a-3p were mediated through the TGF-β receptor 2 signaling pathway. Hsa-miR-371a-3p and hsa-miR-520e, the human homologs of mmu-miR-291a-3p, showed similar anti-senescence activity. Furthermore, mmu-miR-291a-3p accelerated the excisional skin wound healing process in aged mice. Our results indicate that the ESC-derived mmu-miR-291a-3p is a novel candidate agent that can be utilized for cell-free therapeutic intervention against aging and aging-related diseases.
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Affiliation(s)
- Yun-Ui Bae
- Department of Biochemistry and Molecular Biology, College of Medicine, Daegu, Republic of Korea
- Smart-Aging Convergence Research Center, Yeungnam University, Daegu, Republic of Korea
| | - Youlim Son
- Department of Biochemistry and Molecular Biology, College of Medicine, Daegu, Republic of Korea
- Smart-Aging Convergence Research Center, Yeungnam University, Daegu, Republic of Korea
| | - Chang-Hyun Kim
- Department of Biochemistry and Molecular Biology, College of Medicine, Daegu, Republic of Korea
| | - Kwang Seok Kim
- Division of Applied Radiation Bioscience, Korea Institute of Radiological and Medical Sciences, Seoul, Republic of Korea
| | - Se Hee Hyun
- Division of Applied Radiation Bioscience, Korea Institute of Radiological and Medical Sciences, Seoul, Republic of Korea
| | - Hyun Goo Woo
- Department of Physiology, Graduate School, Ajou University, Suwon, Republic of Korea
| | - Byul A Jee
- Department of Biomedical Sciences, Graduate School, Ajou University, Suwon, Republic of Korea
| | - Jun-Hyuk Choi
- Department of Pathology, College of Medicine, Yeungnam University, Daegu, Republic of Korea
| | - Hoon-Ki Sung
- Physiology and Experimental Medicine Program, Hospital for Sick Children Research Institute, Laboratory Medicine and Pathobiology, University of Toronto, Ontario, Canada
| | - Hyung-Chul Choi
- Department of Pharmacology, College of Medicine, Yeungnam University, Daegu, Republic of Korea
| | - So Young Park
- Department of Physiology, College of Medicine, Yeungnam University, Daegu, Republic of Korea
| | - Ju-Hyun Bae
- Department of Physiology, College of Medicine, Yeungnam University, Daegu, Republic of Korea
| | - Kyung-Oh Doh
- Department of Physiology, College of Medicine, Yeungnam University, Daegu, Republic of Korea
| | - Jae-Ryong Kim
- Department of Biochemistry and Molecular Biology, College of Medicine, Daegu, Republic of Korea
- Smart-Aging Convergence Research Center, Yeungnam University, Daegu, Republic of Korea
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Suresh Kumar V, Ji SY, Zhang YT, Shojiki K, Choi JH, Kimura T, Hanada T, Katayama R, Matsuoka T. Dependence of the V/III Ratio on Indium Incorporation in InGaN Films Grown by Metalorganic Vapour Phase Epitaxy. J Nanosci Nanotechnol 2020; 20:2979-2986. [PMID: 31635636 DOI: 10.1166/jnn.2020.17466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
InGaN epitaxial layers were grown on c-plane sapphire substrates using the metalorganic vapour phase epitaxy (MOVPE) system at 760 °C. By varying the total flow rate of group-III sources (TMI+TEG) with a fixed molar ratio of group-III sources [TMI/(TMI+TEG)], the influence of V/III ratio were investigated from 4500 to 20000. The grown N-polar InGaN layers were investigated by atomic force microscopy and it is found that the surface roughness decreases with increasing the V/III ratios. High resolution X-ray diffraction analyses show that the phase separation decreases with increasing the V/III ratios. Photoluminescence measurements reveal that the peak position of the band-edge emission shifted toward the shorter wavelength with increasing the V/III ratios. Reciprocal space mapping (RSM) analyses were carried out on InGaN films. At low V/III ratio, the phase separation can be detected in InGaN films.
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Affiliation(s)
- V Suresh Kumar
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - S Y Ji
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - Y T Zhang
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - K Shojiki
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - J H Choi
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - T Kimura
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - T Hanada
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - R Katayama
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - T Matsuoka
- Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
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Faruqui N, Kummrow A, Fu B, Divieto C, Rojas F, Kisulu F, Cavalcante JJV, Wang J, Campbell J, Martins JL, Choi JH, Sassi MP, Zucco M, Vonsky M, Vessillier S, Zou S, Fujii SI, Ryadnov MG. Cellular Metrology: Scoping for a Value Proposition in Extra- and Intracellular Measurements. Front Bioeng Biotechnol 2020; 7:456. [PMID: 31993416 PMCID: PMC6970939 DOI: 10.3389/fbioe.2019.00456] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 12/19/2019] [Indexed: 12/23/2022] Open
Abstract
The symptomatic irreproducibility of data in biomedicine and biotechnology prompts the need for higher order measurements of cells in their native and near-native environments. Such measurements may support the adoption of new technologies as well as the development of research programs across different sectors including healthcare and clinic, environmental control and national security. With an increasing demand for reliable cell-based products and services, cellular metrology is poised to help address current and emerging measurement challenges faced by end-users. However, metrological foundations in cell analysis remain sparse and significant advances are necessary to keep pace with the needs of modern medicine and industry. Herein we discuss a role of metrology in cell and cell-related R&D activities to underpin growing international measurement capabilities. Relevant measurands are outlined and the lack of reference methods and materials, particularly those based on functional cell responses in native environments, is highlighted. The status quo and current challenges in cellular measurements are discussed in the light of metrological traceability in cell analysis and applications (e.g., a functional cell count). An emphasis is made on the consistency of measurement results independent of the analytical platform used, high confidence in data quality vs. quantity, scale of measurements and issues of building infrastructure for end-users.
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Affiliation(s)
| | | | - Boqiang Fu
- National Institute of Metrology, Beijing, China
| | - Carla Divieto
- Istituto Nazionale di Ricerca Metrologica, Turin, Italy
| | - Fabiola Rojas
- Instituto de Salud Pública de Chile, Santiago, Chile
| | | | - Janaina J V Cavalcante
- National Institute of Metrology, Quality and Technology (INMETRO), Rio de Janeiro, Brazil
| | - Jing Wang
- National Institute of Metrology, Beijing, China
| | | | - Juliana L Martins
- National Institute of Metrology, Quality and Technology (INMETRO), Rio de Janeiro, Brazil
| | - Jun-Hyuk Choi
- Korea Research Institute of Standards and Science, Daejeon, South Korea
| | | | - Massimo Zucco
- Istituto Nazionale di Ricerca Metrologica, Turin, Italy
| | - Maxim Vonsky
- D. I. Mendeleyev Institute for Metrology, Saint Petersburg, Russia.,Institute of Cytology, Russian Academy of Sciences, Saint Petersburg, Russia
| | - Sandrine Vessillier
- National Institute for Biological Standards and Control, Potters Bar, United Kingdom
| | - Shan Zou
- Metrology Research Centre, National Research Council, Ottawa, ON, Canada
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Kim HY, Kim KH, Choi JH. P1443 Sex differences of coronary physiology can be justified by fractional myocardial mass. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background Women has lower prevalence of coronary artery disease but has higher mortality from acute myocardial infarction. The gender difference in the anatomical-physiological relationship may elucidate the gender difference in the clinical presentation of coronary artery disease.
Purpose
We hypothesized that the gender difference in the anatomical-physiological relationship may elucidate the gender difference in the clinical presentation of coronary artery disease.
Background Women has lower prevalence of coronary artery disease but has higher mortality from acute myocardial infarction. The gender difference in the anatomical-physiological relationship may elucidate the gender difference in the clinical presentation of coronary artery disease.
Methods In this multicenter registry, 482 patients who underwent coronary CT angiography and fractional flow reserve (FFR) measurement were enrolled. Fractional myocardial mass (FMM, a vessel-specific amount of myocardium) and %FMM (fraction of FMM to whole myocardial mass) was measured in major coronary arteries and branches. FFR and quantitative coronary angiography (QCA) were interrogated in the subset of 772 vessels. The severity of physiological or anatomical stenosis was assessed by FFR and diameter stenosis (DS), respectively.
Results In the analysis of all major epicardial arteries (N = 3,833), FMM was lower in women compared to men (p < 0.01, all), but %FMM was similar between women and men (p = NS, all). Among physiologically assessed 772 vessels, compared to men (N = 587), vessels of women (N = 185) showed smaller dimension (reference diameter (RD) = 2.90 ± 0.65 vs 3.14 ± 0.69 mm, minimal luminal diameter (MLD) = 1.30±.0.57 vs 1.40 ± 0.57 mm (p < 0.05, all), similar severity of stenosis (DS = 55% vs 55% p = NS), and higher FFR (0.81 ± 0.13 vs 0.78 ± 0.15, p < 0.001). In subgroup analysis according to the tertiary categories of DS, RD, and MLD, vessels of women showed higher FFR and lower FMM. Generalized estimating equations modeling demonstrated that gender, DS, RD, MLD, and location in left anterior descending artery were not (p = NS, all) but FMM/MLD were significant predictors for FFR ≤ 0.80 (p = 0.021).
Conclusions
Compared to men, coronary arteries of women are smaller and supply smaller amount of myocardium even after adjusting for vessel size, which may explain overall higher FFR value of women. This gender difference in anatomical-physiological relationship may explain the gender difference in the clinical coronary artery disease.
Abstract P1443 Figure.
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Affiliation(s)
- H Y Kim
- Chonnam National University Medical School, Gwangju, Korea (Republic of)
| | - K H Kim
- Chonnam National University Medical School, Gwangju, Korea (Republic of)
| | - J H Choi
- Samsung Medical Center, Division of Cardiology, Department of Internal medicine, Seoul, Korea (Republic of)
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Kim HY, Choi JH, Kim KH, Kim SM. 1175 Comparison of fractional myocardial mass, a vessel-specific myocardial mass-at-risk, with coronary angiographic scoring systems for predicting myocardial ischemia. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Aims The burden of coronary artery disease has been assessed by various semi-quantitative angiographic scores, which are frequently different each other. A non-invasive and quantitative modality may substitute angiographic sores for prognostic implication and decision of revascularization strategy. We compared fractional myocardial mass (FMM) with angiographic scores for predicting myocardial ischemia.
Methods In this multicenter registry, 411 patients who underwent coronary computed tomography angiography (CCTA) were followed by invasive coronary angiography and FFR measurement. CCTA–derived %FMM with diameter stenosis ≥70% (%FMM-70) or ≥50% (%FMM-50) were compared with 9 angiographic scores (APPROACH, Duke Jeopardy, BARI, CASS, SYNTAX, Jenkins, BCIS-1, Leaman, Modified Duke) and were tested regarding their performance for predicting FFR ≤ 0.80. Predictive performance of %FMM or angiographic scores for FFR ≤ 0.80 established in derivation cohort (N = 250) and tested in validation cohort (N = 161).
Results The performance of %FMM-70 and %FMM-50 were similar to most angiographic scores (%FMM-70, c-statistics = 0.76; %FMM-50, 0.71; angiographic scores, 0.68 – 0.79). The frequency of FFR ≤ 0.80 increased consistently according to %FMM-70, %FMM-50, and all angiographic scores (p < 0.001, all). The optimal cutoff of %FMM-50 and %FMM-70 for FFR ≤ 0.80 were ≥34.5% and ≥9.8%, respectively. The sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of %FMM-50 were 83%, 56%, 73%, 70%, 72%, and of %FMM-70 were 72%, 78%, 75%, 75%, and 75% using these cutoffs. Validation cohort showed consistent results.
Conclusion %FMM correlated well with angiographic scores and had a potential to be used as a non-invasive alternative to the angiographic scores. The integration of the severity of stenosis and the amount of subtended myocardium may improve the detection of clinically significant coronary artery stenosis.
Abstract 1175 Figure. FMM vs angiographic score
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Affiliation(s)
- H Y Kim
- Chonnam National University Hospital, Gwangju, Korea (Republic of)
| | - J H Choi
- Samsung Medical Center, Seoul, Korea (Republic of)
| | - K H Kim
- Chonnam National University Hospital, Gwangju, Korea (Republic of)
| | - S M Kim
- Samsung Medical Center, Seoul, Korea (Republic of)
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Cheon S, Lee WW, Park WI, Jung JY, Choi JH, Choi DG, Jeon S, Jeong JH, Lee J. Fabrication of arrangement-controlled and vertically grown ZnO nanorods by metal nanotransfer printing. J IND ENG CHEM 2020. [DOI: 10.1016/j.jiec.2019.09.029] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Jung JM, Jung CJ, Lee WJ, Won CH, Lee MW, Choi JH, Chang SE. Topically applied treatments for external genital warts in nonimmunocompromised patients: a systematic review and network meta-analysis. Br J Dermatol 2019; 183:24-36. [PMID: 31675442 DOI: 10.1111/bjd.18638] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/24/2019] [Indexed: 01/22/2023]
Abstract
Selecting a topical treatment from among the numerous topical agents for external genital warts remains challenging without clear evidence. Our aim was to evaluate comparatively the efficacy and safety of topical agents for external genital warts using a network meta-analysis. We included all randomized controlled trials that evaluated any topically applied treatment for external genital warts. Using the R package netmeta, network meta-analyses were performed with a frequentist approach. We identified 41 relevant studies comprising 6371 patients. Among conventional agents, podophyllotoxin 0·5% solution (odds ratio 1·94, 95% confidence interval 1·02-3·71) was significantly more efficacious than imiquimod 5% cream for lesion clearance; however, it was associated with a higher overall adverse event rate. Sinecatechins 15% ointment (odds ratio 0·21, 95% confidence interval 0·12-0·34) was significantly less efficacious than imiquimod 5% cream. Idoxuridine, polyhexamethylene biguanide, cidofovir and SB206 showed comparable therapeutic efficacies with conventional therapies. None of the treatments were significantly different from each other with respect to recurrence, patients with severe adverse events, or patients who withdrew because of treatment-related adverse events. Conventional modalities were efficacious and well tolerated, although each of them had their advantages and disadvantages. Additional efficacy and safety studies are warranted for unconventional agents.
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Affiliation(s)
- J M Jung
- Department of Dermatology, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - C J Jung
- Department of Dermatology, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - W J Lee
- Department of Dermatology, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - C H Won
- Department of Dermatology, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - M W Lee
- Department of Dermatology, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - J H Choi
- Department of Dermatology, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - S E Chang
- Department of Dermatology, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
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Choi JH, Han S, Kemp MG. Detection of the small oligonucleotide products of nucleotide excision repair in UVB-irradiated human skin. DNA Repair (Amst) 2019; 86:102766. [PMID: 31838380 DOI: 10.1016/j.dnarep.2019.102766] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 10/26/2019] [Accepted: 12/04/2019] [Indexed: 11/29/2022]
Abstract
UVB radiation results in the formation of potentially mutagenic photoproducts in the DNA of epidermal skin cells. In vitro approaches have demonstrated that the nucleotide excision repair (NER) machinery removes UV photoproducts from DNA in the form of small (∼30-nt-long), excised, damage-containing DNA oligonucleotides (sedDNAs). Though this process presumably takes place in human skin exposed to UVB radiation, sedDNAs have not previously been detected in human skin. Using surgically discarded human skin, we have optimized the detection of the sedDNA products of NER from small amounts of human epidermal tissue ex vivo within minutes of UVB exposure and after UVB doses that normally lead to minimal erythema. Moreover, sedDNA generation was inhibited by treatment of skin explants with spironolactone, which depletes the epidermis of the essential NER protein XPB to mimic the skin of xeroderma pigmentosum patients. Time course experiments revealed that a partially degraded form of the sedDNAs could be readily detected even 12 hours following UVB exposure, which indicates that these repair products are relatively stable in human skin epidermis. Together, these data suggest that sedDNA detection may be a useful assay for determining how genetic, environmental, and other factors influence NER activity in human skin epidermis and whether abnormal sedDNA processing contributes to photosensitive skin disorders.
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Affiliation(s)
- Jun-Hyuk Choi
- Center for Bioanalysis, Korea Research Institute of Standards and Science, Republic of Korea; Department of Bio-Analytical Science, University of Science & Technology, Republic of Korea
| | - Sueji Han
- Center for Bioanalysis, Korea Research Institute of Standards and Science, Republic of Korea; Department of Bio-Analytical Science, University of Science & Technology, Republic of Korea
| | - Michael G Kemp
- Department of Pharmacology and Toxicology, Wright State University Boonshoft School of Medicine, Dayton, OH 45435, United States.
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Cho DY, Kim BS, Choi JH, Park YK, Shin YS. The Fate of Unruptured Intracranial Vertebrobasilar Dissecting Aneurysm with Brain Stem Compression According to Different Treatment Modalities. AJNR Am J Neuroradiol 2019; 40:1924-1931. [PMID: 31601577 DOI: 10.3174/ajnr.a6252] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Accepted: 08/20/2019] [Indexed: 12/28/2022]
Abstract
BACKGROUND AND PURPOSE Unruptured intracranial vertebrobasilar dissecting aneurysms with brain stem compression are difficult to treat. In the present study, the clinical and radiologic outcomes of unruptured intracranial vertebrobasilar dissecting aneurysms with brain stem compression based on different treatment modalities were evaluated. MATERIALS AND METHODS This study included 28 patients with unruptured intracranial vertebrobasilar dissecting aneurysms with brain stem compression treated from January 2009 to December 2017. Treatment methods were observation (n = 6), stent-assisted coil embolization (n = 9), parent artery occlusion (n = 6), and flow diversion (n = 7). The data of baseline characteristics, change of aneurysm size, retreatment rate, stroke occurrence, and alteration of the mRS score were obtained from retrospective chart review. RESULTS The initial size of dissecting aneurysms was largest in the flow diversion group (22.5 ± 7.7 mm), followed by parent artery occlusion (20.3 ± 8.4 mm), stent-assisted coil embolization (11.7 ± 2.2 mm), and observation (17.8 ± 5.5 mm; P = .01) groups. The reduction rate of aneurysm size was highest in the parent artery occlusion group (26.7 ± 32.1%), followed by flow diversion (14.1% ± 28.7%), stent-assisted coil embolization (-17.9 ± 30.3%), and observation (-31.5 ± 30.8%; P = .007) groups. Additional treatment was needed in the observation (4/6, 66.7%) and stent-assisted coil embolization (3/9, 33.3%; P = .017) groups. Improvement of the mRS score on follow-up was observed in the flow diversion (6/7, 85.7%) and parent artery occlusion (4/6, 66.7%) groups but not in the stent-assisted coil embolization and observation groups. A worsened mRS score was most common in the observation group (4/6, 66.7%), followed by stent-assisted coil embolization (3/9, 33.3%), parent artery occlusion (2/6, 33.3%), and flow diversion (0/7, 0%) groups. CONCLUSIONS When treating intracranial vertebrobasilar dissecting aneurysms with brain stem compression, parent artery occlusion and flow diversion should be considered to reduce aneurysm size and improve the mRS score.
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Affiliation(s)
- D Y Cho
- From the Department of Neurosurgery (D.Y.C.), Ewha Womans University Seoul Hospital, College of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - B-S Kim
- Departments of Radiology (B.-S.K.)
| | - J H Choi
- Neurosurgery (J.H.C., Y.S.S.), Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Y K Park
- Department of Neurosurgery (Y.K.P.), Ilsan Paik Hospital, College of Medicine, Inje University, Goyang, Republic of Korea
| | - Y S Shin
- Neurosurgery (J.H.C., Y.S.S.), Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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Choe JC, Cha KS, Shin JY, Ahn J, Park JS, Lee HW, Oh JH, Choi JH, Lee HC, Hong TJ. 3334Updated meta-analysis of biodegradable polymer drug-eluting stent versus second-generation durable polymer drug-eluting stent implantations. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Data regarding clinical outcomes of biodegradable polymer drug-eluting stent (BP-DES) versus second-generation durable polymer drug-eluting stent (DP-DES) in patients undergoing percutaneous coronary intervention (PCI) are inconclusive.
Purpose
We aimed to perform a meta-analysis to investigate the clinical outcomes of BP-DES compared with second-generation DP-DES in patients who have undergone PCI.
Methods
We searched PubMed, MEDLINE, EMBASE, and Cochrane databases through January 2019 for randomized controlled trials comparing BP-DES with second-generation DP-DES in patients treated with PCI. All-cause death, cardiac death, myocardial infarction (MI), target vessel revascularization (TVR), target lesion revascularization (TLR), definite/probable stent thrombosis (ST) were compared between the groups. Additionally, a landmark analysis with the landmark set at 1 year and a subgroup analysis according to stent characteristics were performed.
Results
Data from 23 trials including 28802 randomized patients were analyzed. At a median follow up of 3.1 years, no significant differences were found in terms of all-cause death (odds ratio [OR] 1.05, 95% confidence interval [CI] 0.95–1.16), cardiac death (OR 1.01, 95% CI 0.87–1.17), MI (OR 0.92, 95% CI 0.82–1.03), TVR (OR 0.97, 95% CI 0.86–1.11), TLR (OR 0.97, 95% CI 0.85–1.11), and definite/probable ST (OR 0.86, 95% CI 0.70–1.07) between the groups. Landmark analysis showed that there were similar risks in all-cause death (OR 1.04, 95% CI 0.93–1.17), cardiac death (OR 1.11, 95% CI 0.92–1.36), MI (OR 0.94, 95% CI 0.79–1.13), TVR (OR 0.95, 95% CI 0.73–1.23), TLR (OR 1.00, 95% CI 0.80–1.24), and definite/probable ST (OR 0.92, 95% CI 0.67–1.28) between the groups. The similar tendency of any study endpoints between the groups was consistent in the subgroup, including stent platform (stainless steel vs. alloy), the drug coating distribution (abluminal vs. circumferential), the polymer degradation period (<6 months vs. >6 months), or the drug release duration (<6 months vs. >6 months) of BP-DES, or the DAPT duration (≥6 months vs. ≥12 months). However, the uses of BP-DES with sirolimus-eluting (OR 0.84, 95% CI 0.72–0.98) or ultrathin strut (defined as <70μm; OR 0.81, 95% CI 0.68–0.97) were predictive for lower risk of MI.
Clinical outcomes
Conclusions
In our updated meta-analysis, BP-DES implantation was associated with comparable clinical outcomes compared with second-generation DP-DES implantation. However, PCI with ultrathin biodegradable polymer sirolimus-eluting stent could reduce the risk of MI.
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Affiliation(s)
- J C Choe
- Pusan National University Hospital, Department of Cardiology, Pusan, Korea (Republic of)
| | - K S Cha
- Pusan National University Hospital, Department of Cardiology, Pusan, Korea (Republic of)
| | - J Y Shin
- Pusan National University Hospital, Department of Cardiology, Pusan, Korea (Republic of)
| | - J Ahn
- Pusan National University Hospital, Department of Cardiology, Pusan, Korea (Republic of)
| | - J S Park
- Pusan National University Hospital, Department of Cardiology, Pusan, Korea (Republic of)
| | - H W Lee
- Pusan National University Hospital, Department of Cardiology, Pusan, Korea (Republic of)
| | - J H Oh
- Pusan National University Hospital, Department of Cardiology, Pusan, Korea (Republic of)
| | - J H Choi
- Pusan National University Hospital, Department of Cardiology, Pusan, Korea (Republic of)
| | - H C Lee
- Pusan National University Hospital, Department of Cardiology, Pusan, Korea (Republic of)
| | - T J Hong
- Pusan National University Hospital, Department of Cardiology, Pusan, Korea (Republic of)
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Choe JC, Cha KS, Shin JY, Ahn J, Park JS, Lee HW, Oh JH, Choi JH, Lee HC, Hong TJ. P2799Long-term outcomes after percutaneous coronary intervention with biodegradable polymer drug-eluting stent versus second-generation durable polymer drug-eluting stent: evidence from a meta-analysis. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.1112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
The true benefit of biodegradable polymer drug-eluting stent (BP-DES) over second-generation durable polymer drug-eluting stent (DP-DES) expected to be represented during late period of follow-up after percutaneous coronary intervention (PCI), but prior meta-analysis only evaluated short-term outcomes.
Purpose
We aimed to compare the long-term clinical outcomes after PCI with BP-DES versus second-generation DP-DES by a meta-analysis of randomized controlled trials.
Methods
Randomized controlled trials comparing BP-DES with second-generation DP-DES implantations were searched through PubMed, MEDLINE, EMBASE, and Cochrane databases. All-cause death, cardiac death, myocardial infarction (MI), target vessel revascularization (TVR), target lesion revascularization (TLR), and definite/probable stent thrombosis (ST) were compared between the groups. In addition, a landmark analysis with the landmark set at 1-year and a subgroup analysis based on stent characteristics were performed.
Results
Fifteen trials that included a total of 21311 randomized patients with at least 2 years follow-up were analyzed. At a median follow-up of 4.2 years, no significant differences in the risks of all-cause death (odds ratio [OR] 1.03, 95% confidence interval [CI] 0.94–1.14), cardiac death (OR 1.03, 95% CI 0.88–1.20), MI (OR 0.90, 95% CI 0.79–1.01), TVR (OR 0.96, 95% CI 0.82–1.12), TLR (OR 0.97, 95% CI 0.85–1.11), and definite/probable ST (OR 0.84, 95% CI 0.67–1.05) were found between the groups. In the 1-year landmark analysis, the rates of all-cause death (OR 1.04, 95% CI 0.93–1.17), cardiac death (OR 1.11, 95% CI 0.92–1.36), MI (OR 0.94, 95% CI 0.79–1.13), TVR (OR 0.95, 95% CI 0.73–1.23), TLR (OR 1.00, 95% CI 0.80–1.24), and definite/probable ST (OR 0.94, 95% CI 0.67–1.31) were similar between the groups. There were comparable rates of any study endpoints between the groups regardless of stent platform (stainless steel vs. alloy), the polymer degradation period (<6 months vs. >6 months) or the drug release duration (<6 months vs. >6 months) of BP-DES, or the DAPT duration (≥6 months vs. ≥12 months). However, the use of BP-DES with sirolimus eluting (OR 0.82, 95% CI 0.70–0.97), circumferential drug distribution (OR 0.79, 95% CI 0.65–0.96), thin strut (defined as <100μm; OR 0.83, 95% CI 0.70–0.97), or ultrathin strut (defined as <70μm; OR 0.78, 95% CI 0.64–0.94) were associated with lower rates of MI than did second-generation DP-DES. Moreover, BP-DES with circumferential drug distribution (OR 0.82, 95% CI 0.69–0.98) was predictive for reduced rates of TVR.
Clinical outcomes
Conclusions
In this meta-analysis, long-term clinical outcomes were equivalent between BP-DES and second-generation DP-DES implantations. However, among BP-DESs, the improved risks of MI in those with sirolimus eluting, circumferential drug distribution, thin strut, or ultrathin strut and decreased rates of TVR in those with circumferential drug distribution were noted.
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Affiliation(s)
- J C Choe
- Pusan National University Hospital, Department of Cardiology, Pusan, Korea (Republic of)
| | - K S Cha
- Pusan National University Hospital, Department of Cardiology, Pusan, Korea (Republic of)
| | - J Y Shin
- Pusan National University Hospital, Department of Cardiology, Pusan, Korea (Republic of)
| | - J Ahn
- Pusan National University Hospital, Department of Cardiology, Pusan, Korea (Republic of)
| | - J S Park
- Pusan National University Hospital, Department of Cardiology, Pusan, Korea (Republic of)
| | - H W Lee
- Pusan National University Hospital, Department of Cardiology, Pusan, Korea (Republic of)
| | - J H Oh
- Pusan National University Hospital, Department of Cardiology, Pusan, Korea (Republic of)
| | - J H Choi
- Pusan National University Hospital, Department of Cardiology, Pusan, Korea (Republic of)
| | - H C Lee
- Pusan National University Hospital, Department of Cardiology, Pusan, Korea (Republic of)
| | - T J Hong
- Pusan National University Hospital, Department of Cardiology, Pusan, Korea (Republic of)
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Shin SH, Shin SH, Choi JH, Lee J, Choi DG, Jeong JH, Ju BK, Jung JY. Dual nanotransfer printing for complementary plasmonic biosensors. Nanotechnology 2019; 30:385302. [PMID: 31234162 DOI: 10.1088/1361-6528/ab2c10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
One of the main challenges in the widespread utilization of localized plasmon resonance-based biosensors is the fabrication of large-area and low-cost plasmonic nanostructures. In this work, we fabricated large-area and low-cost complementary plasmonic biosensors such as nanohole and nanodisk arrays using dual nanotransfer printing (NTP) with a single metal deposition and a single reusable mold. The suspended nanohole arrays and the suspended nanodisk arrays were fabricated using the subsequent dry etching process. We confirmed a maximum enhancement in bulk sensitivity in experiments and simulations by controlling the vertical and lateral etching depths of the dielectric layer underneath the gold (Au) nanohole and nanodisk arrays. Furthermore, we show that the surface sensitivity evaluated by atomic layer deposition of aluminum oxide increased because appropriate vertical and lateral etching depths allow the target analyte to access the additional near-field formed at the bottom of the Au nanostructure. The dual NTP method provides a practical solution for the realization of large-area and low-cost label-free plasmonic biosensing systems, with a reduction in complexity and cost of the fabrication process of complementary plasmonic structures and metasurfaces.
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Affiliation(s)
- Sang-Ho Shin
- Department of Electrical Engineering, College of Engineering, Korea University, Seoul 02841, Republic of Korea. Nano-convergence Mechanical Systems Research Division, Korea Institute of Machinery and Materials (KIMM), Daejeon 305-343, Republic of Korea
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39
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Bak G, Choi JH, Jang HI, Jang JS, Jeon SH, Joo KK, Ju K, Jung DE, Kim JG, Kim JH, Kim JY, Kim SB, Kim SY, Kim W, Kwon E, Lee DH, Lee HG, Lee YC, Lim IT, Moon DH, Pac MY, Park YS, Rott C, Seo H, Seo JW, Seo SH, Shin CD, Yang JY, Yoo J, Yu I. Fuel-Composition Dependent Reactor Antineutrino Yield at RENO. Phys Rev Lett 2019; 122:232501. [PMID: 31298906 DOI: 10.1103/physrevlett.122.232501] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 05/16/2019] [Indexed: 06/10/2023]
Abstract
We report a fuel-dependent reactor electron antineutrino (ν[over ¯]_{e}) yield using six 2.8 GW_{th} reactors in the Hanbit nuclear power plant complex, Yonggwang, Korea. The analysis uses 850 666 ν[over ¯]_{e} candidate events with a background fraction of 2.0% acquired through inverse beta decay (IBD) interactions in the near detector for 1807.9 live days from August 2011 to February 2018. Based on multiple fuel cycles, we observe a fuel ^{235}U dependent variation of measured IBD yields with a slope of (1.51±0.23)×10^{-43} cm^{2}/fission and measure a total average IBD yield of (5.84±0.13)×10^{-43} cm^{2}/fission. The hypothesis of no fuel-dependent IBD yield is ruled out at 6.6σ. The observed IBD yield variation over ^{235}U isotope fraction does not show significant deviation from the Huber-Mueller (HM) prediction at 1.3 σ. The measured fuel-dependent variation determines IBD yields of (6.15±0.19)×10^{-43} and (4.18±0.26)×10^{-43} cm^{2}/fission for two dominant fuel isotopes ^{235}U and ^{239}Pu, respectively. The measured IBD yield per ^{235}U fission shows the largest deficit relative to the HM prediction. Reevaluation of the ^{235}U IBD yield per fission may mostly solve the reactor antineutrino anomaly (RAA) while ^{239}Pu is not completely ruled out as a possible contributor to the anomaly. We also report a 2.9 σ correlation between the fractional change of the 5 MeV excess and the reactor fuel isotope fraction of ^{235}U.
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Affiliation(s)
- G Bak
- Institute for Universe and Elementary Particles, Chonnam National University, Gwangju 61186, Korea
| | - J H Choi
- Institute for High Energy Physics, Dongshin University, Naju 58245, Korea
| | - H I Jang
- Department of Fire Safety, Seoyeong University, Gwangju 61268, Korea
| | - J S Jang
- GIST College, Gwangju Institute of Science and Technology, Gwangju 61005, Korea
| | - S H Jeon
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
| | - K K Joo
- Institute for Universe and Elementary Particles, Chonnam National University, Gwangju 61186, Korea
| | - K Ju
- Department of Physics, KAIST, Daejeon 34141, Korea
| | - D E Jung
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
| | - J G Kim
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
| | - J H Kim
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
| | - J Y Kim
- Institute for Universe and Elementary Particles, Chonnam National University, Gwangju 61186, Korea
| | - S B Kim
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - S Y Kim
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - W Kim
- Department of Physics, Kyungpook National University, Daegu 41566, Korea
| | - E Kwon
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - D H Lee
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - H G Lee
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - Y C Lee
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - I T Lim
- Institute for Universe and Elementary Particles, Chonnam National University, Gwangju 61186, Korea
| | - D H Moon
- Institute for Universe and Elementary Particles, Chonnam National University, Gwangju 61186, Korea
| | - M Y Pac
- Institute for High Energy Physics, Dongshin University, Naju 58245, Korea
| | - Y S Park
- Institute for Universe and Elementary Particles, Chonnam National University, Gwangju 61186, Korea
| | - C Rott
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
| | - H Seo
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - J W Seo
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
| | - S H Seo
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - C D Shin
- Institute for Universe and Elementary Particles, Chonnam National University, Gwangju 61186, Korea
| | - J Y Yang
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - J Yoo
- Institute for Basic Science, Daejeon 34047, Korea
- Department of Physics, KAIST, Daejeon 34141, Korea
| | - I Yu
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
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Jung Y, Hwang I, Yu J, Lee J, Choi JH, Jeong JH, Jung JY, Lee J. Fano Metamaterials on Nanopedestals for Plasmon-Enhanced Infrared Spectroscopy. Sci Rep 2019; 9:7834. [PMID: 31127173 PMCID: PMC6534610 DOI: 10.1038/s41598-019-44396-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [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: 02/15/2019] [Accepted: 05/15/2019] [Indexed: 01/29/2023] Open
Abstract
We report a sensing platform for surface-enhanced infrared absorption (SEIRA) spectroscopy, based on Fano metamaterials (FMMs) on dielectric nanopedestals. FMMs consist of two parallel gold (Au) nanorod antennas, with a small horizontal coupler attached to one of the nanorod antenna. When placed on SiO2 dielectric nanopedestals, which exhibit strong field enhancements caused by the interference between subradiant and superradiant plasmonic resonances, they provide the highly enhanced E-field intensities formed near the Au nanoantenna, which can provide more enhanced molecular detection signals. Here, the sensing characteristics of FMMs on nanopedestals structure was confirmed by comparison with FMMs on an unetched SiO2 substrate as a control sample. The control FMMs and the FMMs on nanopedestals were carefully designed to excite Fano resonance near the target 1-octadecanethiol (ODT) fingerprint vibrations. The FMMs were fabricated by using nanoimprint lithography and the nanopedestal structures were formed by isotropic dry-etching. The experimental reflection spectra containing the enhanced absorption signals of the ODT monolayer molecules was analyzed using temporal coupled-mode theory. The FMMs on nanopedestals achieved over 7% of reflection difference signal, which was 1.7 times higher signal than the one from the control FMMs. Based on the FMMs on nanopedestal structures proposed in this study, it may be widely applied to future spectroscopy and sensor applications requiring ultrasensitive detection capability.
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Affiliation(s)
- Yongseok Jung
- School of Electrical and Computer Engineering, Ulsan National Institute of Science and Technology, Ulsan, 44919, Korea
| | - Inyong Hwang
- School of Electrical and Computer Engineering, Ulsan National Institute of Science and Technology, Ulsan, 44919, Korea
| | - Jaeyeon Yu
- School of Electrical and Computer Engineering, Ulsan National Institute of Science and Technology, Ulsan, 44919, Korea
| | - Jihye Lee
- Nano-convergence Mechanical Systems Research Division, Korea Institute of Machine and Materials, Daejeon, 305-343, Korea
| | - Jun-Hyuk Choi
- Nano-convergence Mechanical Systems Research Division, Korea Institute of Machine and Materials, Daejeon, 305-343, Korea
| | - Jun-Ho Jeong
- Nano-convergence Mechanical Systems Research Division, Korea Institute of Machine and Materials, Daejeon, 305-343, Korea
| | - Joo-Yun Jung
- Nano-convergence Mechanical Systems Research Division, Korea Institute of Machine and Materials, Daejeon, 305-343, Korea.
| | - Jongwon Lee
- School of Electrical and Computer Engineering, Ulsan National Institute of Science and Technology, Ulsan, 44919, Korea.
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Park J, Lee M, Kim J, Choi HJ, Kwon A, Chung HS, Hong SH, Park CS, Choi JH, Chae MS. Intraoperative Management to Prevent Cardiac Collapse in a Patient With a Recurrent, Large-volume Pericardial Effusion and Paroxysmal Atrial Fibrillation During Liver Transplantation: A Case Report. Transplant Proc 2019; 51:568-574. [PMID: 30879592 DOI: 10.1016/j.transproceed.2018.12.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Accepted: 12/29/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND Pericardial effusion is a common feature of end-stage liver disease. In this case report we describe the intraoperative management of recurrent pericardial effusion, without re-pericardiocentesis, to prevent circulatory collapse during a critical surgical time-point; that is, during manipulation of the major vessels and graft reperfusion. METHODS A 47-year-old woman with hepatitis B was scheduled to undergo deceased donor liver transplantation (LT). A large pericardial effusion was preoperatively identified using transthoracic echocardiography (TTE). The patient also had paroxysmal atrial fibrillation. Two days before surgery, preemptive pericardiocentesis was performed and the 1150-mL effusion was drained. Intraoperatively, recurrence of the large pericardial effusion was identified using transesophageal echocardiography (TEE). During inferior vena cava manipulation, the surgeon consulted the anesthesiologist to evaluate the hemodynamic changes in the patient. After 3 attempts, the transplant team was able to determine the most appropriate anastomosis site, defined as that with the least impact on cardiac function. To prevent the development of severe postreperfusion syndrome, 10% MgSO4 (2 g) was gradually infused 20 minutes before portal vein declamping, and immediately before graft reperfusion a 100-μg bolus of epinephrine was administered. RESULTS During graft reperfusion, there was no evidence of heart chamber collapse or flow disturbance, as seen on the TEE findings. Postoperatively, the patient recovered completely and was discharged from the hospital. Six months after surgery, there was no sign of pericardial effusion on follow-up TTE. CONCLUSION Our intraoperative strategy may prevent cardiac collapse in patients with pericardial effusion detected during LT. Intraoperative TEE plays an important role in guiding hemodynamic management.
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Affiliation(s)
- J Park
- Department of Anesthesiology and Pain Medicine, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - M Lee
- Department of Anesthesiology and Pain Medicine, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - J Kim
- Department of Anesthesiology and Pain Medicine, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - H J Choi
- Department of Surgery, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - A Kwon
- Department of Cardiology, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - H S Chung
- Department of Anesthesiology and Pain Medicine, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - S H Hong
- Department of Anesthesiology and Pain Medicine, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - C S Park
- Department of Anesthesiology and Pain Medicine, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - J H Choi
- Department of Anesthesiology and Pain Medicine, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - M S Chae
- Department of Anesthesiology and Pain Medicine, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
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Bak G, Choi JH, Jang HI, Jang JS, Jeon SH, Joo KK, Ju K, Jung DE, Kim JG, Kim JH, Kim JY, Kim SB, Kim SY, Kim W, Kwon E, Lee DH, Lee HG, Lee YC, Lim IT, Moon DH, Pac MY, Park YS, Rott C, Seo H, Seo JW, Seo SH, Shin CD, Yang JY, Yoo J, Yu I. Measurement of Reactor Antineutrino Oscillation Amplitude and Frequency at RENO. Phys Rev Lett 2018; 121:201801. [PMID: 30500262 DOI: 10.1103/physrevlett.121.201801] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 09/13/2018] [Indexed: 06/09/2023]
Abstract
The RENO experiment reports more precisely measured values of θ_{13} and |Δm_{ee}^{2}| using ∼2200 live days of data. The amplitude and frequency of reactor electron antineutrino (ν[over ¯]_{e}) oscillation are measured by comparing the prompt signal spectra obtained from two identical near and far detectors. In the period between August 2011 and February 2018, the far (near) detector observed 103 212 (850 666) ν[over ¯]_{e} candidate events with a background fraction of 4.8% (2.0%). A clear energy and baseline dependent disappearance of reactor ν[over ¯]_{e} is observed in the deficit of the measured number of ν[over ¯]_{e}. Based on the measured far-to-near ratio of prompt spectra, we obtain sin^{2}2θ_{13}=0.0896±0.0048(stat)±0.0047(syst) and |Δm_{ee}^{2}|=[2.68±0.12(stat)±0.07(syst)]×10^{-3} eV^{2}.
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Affiliation(s)
- G Bak
- Institute for Universe and Elementary Particles, Chonnam National University, Gwangju 61186, Korea
| | - J H Choi
- Institute for High Energy Physics, Dongshin University, Naju 58245, Korea
| | - H I Jang
- Department of Fire Safety, Seoyeong University, Gwangju 61268, Korea
| | - J S Jang
- GIST College, Gwangju Institute of Science and Technology, Gwangju 61005, Korea
| | - S H Jeon
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
| | - K K Joo
- Institute for Universe and Elementary Particles, Chonnam National University, Gwangju 61186, Korea
| | - K Ju
- Department of Physics, KAIST, Daejeon 34141, Korea
| | - D E Jung
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
| | - J G Kim
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
| | - J H Kim
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
| | - J Y Kim
- Institute for Universe and Elementary Particles, Chonnam National University, Gwangju 61186, Korea
| | - S B Kim
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - S Y Kim
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - W Kim
- Department of Physics, Kyungpook National University, Daegu 41566, Korea
| | - E Kwon
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - D H Lee
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - H G Lee
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - Y C Lee
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - I T Lim
- Institute for Universe and Elementary Particles, Chonnam National University, Gwangju 61186, Korea
| | - D H Moon
- Institute for Universe and Elementary Particles, Chonnam National University, Gwangju 61186, Korea
| | - M Y Pac
- Institute for High Energy Physics, Dongshin University, Naju 58245, Korea
| | - Y S Park
- Institute for Universe and Elementary Particles, Chonnam National University, Gwangju 61186, Korea
| | - C Rott
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
| | - H Seo
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - J W Seo
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
| | - S H Seo
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - C D Shin
- Institute for Universe and Elementary Particles, Chonnam National University, Gwangju 61186, Korea
| | - J Y Yang
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Korea
| | - J Yoo
- Institute for Basic Science, Daejeon 34047, Korea
- Department of Physics, KAIST, Daejeon 34141, Korea
| | - I Yu
- Department of Physics, Sungkyunkwan University, Suwon 16419, Korea
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Kim E, Cho JW, Nguyen TK, Nguyen TTT, Yoon S, Choi JH, Park YC, Kim SK, Kim YS, Kim DW. MoS 2 monolayers on Si and SiO 2 nanocone arrays: influences of 3D dielectric material refractive index on 2D MoS 2 optical absorption. Nanoscale 2018; 10:18920-18925. [PMID: 30288523 DOI: 10.1039/c8nr06597g] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Heterostructures enable the control of transport and recombination of charge carriers, which are either injected through electrodes, or created by light illumination. Instead of full 2D-material-heterostructures in device applications, using hybrid heterostructures consisting of 2D and 3D materials is an alternative approach to take advantage of the unique physical properties of 2D materials. In addition, 3D dielectric nanostructures exhibit useful optical properties such as broadband omnidirectional antireflection effects and strongly concentrated light near the surface. In this work, the optical properties of 2D MoS2 monolayers conformally coated on 3D Si-based nanocone (NC) arrays are investigated. Numerical calculations show that the absorption in MoS2 monolayers on SiO2 NC is significantly enhanced, compared with that for MoS2 monolayers on Si NC. The weak light confinement in low refractive index SiO2 NC leads to greater absorption in the MoS2 monolayers. The measured photoluminescence and Raman intensities of the MoS2 monolayers on SiO2 NC are much greater than those on Si NC, which supports the calculation results. This work demonstrates that 2D MoS2-3D Si nano-heterostructures are promising candidates for use in high-performance integrated optoelectronic device applications.
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Affiliation(s)
- Eunah Kim
- Department of Physics, Ewha Womans University, Seoul 03760, Republic of Korea.
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Hwang KW, Choi JH, Jung SM, Kim YS, Lee SY, Chon MK, Lee SH, Kim JS, Park YH, Kim JH, Chun KJ, Je HG, Lee SK, Choi HO. P1520Defining the blanking period after maze procedure for atrial fibrillation. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- K W Hwang
- Pusan National University Yangsan Hospital, Division of Cardiology, Department of Internal Medicine, Yansan, Korea Republic of
| | - J H Choi
- Pusan National University Yangsan Hospital, Division of Cardiology, Department of Internal Medicine, Yansan, Korea Republic of
| | - S M Jung
- Pusan National University Yangsan Hospital, Division of Cardiology, Department of Internal Medicine, Yansan, Korea Republic of
| | - Y S Kim
- Pusan National University Yangsan Hospital, Division of Cardiology, Department of Internal Medicine, Yansan, Korea Republic of
| | - S Y Lee
- Pusan National University Yangsan Hospital, Division of Cardiology, Department of Internal Medicine, Yansan, Korea Republic of
| | - M K Chon
- Pusan National University Yangsan Hospital, Division of Cardiology, Department of Internal Medicine, Yansan, Korea Republic of
| | - S H Lee
- Pusan National University Yangsan Hospital, Division of Cardiology, Department of Internal Medicine, Yansan, Korea Republic of
| | - J S Kim
- Pusan National University Yangsan Hospital, Division of Cardiology, Department of Internal Medicine, Yansan, Korea Republic of
| | - Y H Park
- Pusan National University Yangsan Hospital, Division of Cardiology, Department of Internal Medicine, Yansan, Korea Republic of
| | - J H Kim
- Pusan National University Yangsan Hospital, Division of Cardiology, Department of Internal Medicine, Yansan, Korea Republic of
| | - K J Chun
- Pusan National University Yangsan Hospital, Division of Cardiology, Department of Internal Medicine, Yansan, Korea Republic of
| | - H G Je
- Pusan National University Yangsan Hospital, Department of Cardiovascular and Thoracic Surgery, Yansan, Korea Republic of
| | - S K Lee
- Pusan National University Yangsan Hospital, Department of Cardiovascular and Thoracic Surgery, Yansan, Korea Republic of
| | - H O Choi
- Soonchunhyang University Hospital, Cardiology, Bucheon, Korea Republic of
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Kim YS, Hwang KW, Choi HO, Jung SM, Choi JH, Lee SY, Chun MK, Lee SH, Kim JS, Je HG, Park YH, Kim JH, Lee SK, Chun KJ. P4815Incidence of incomplete surgical left atrial appendage closure. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p4815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Y S Kim
- Pusan National University Yangsan Hospital, Department of internal medicine, Yangsan-si, Korea Republic of
| | - K W Hwang
- Pusan National University Yangsan Hospital, Department of internal medicine, Yangsan-si, Korea Republic of
| | - H O Choi
- Soonchunhyang University Hospital, Department of internal medicine, Bucheon, Korea Republic of
| | - S M Jung
- Pusan National University Yangsan Hospital, Department of internal medicine, Yangsan-si, Korea Republic of
| | - J H Choi
- Pusan National University Yangsan Hospital, Department of internal medicine, Yangsan-si, Korea Republic of
| | - S Y Lee
- Pusan National University Yangsan Hospital, Department of internal medicine, Yangsan-si, Korea Republic of
| | - M K Chun
- Pusan National University Yangsan Hospital, Department of internal medicine, Yangsan-si, Korea Republic of
| | - S H Lee
- Pusan National University Yangsan Hospital, Department of internal medicine, Yangsan-si, Korea Republic of
| | - J S Kim
- Pusan National University Yangsan Hospital, Department of internal medicine, Yangsan-si, Korea Republic of
| | - H G Je
- Pusan National University, Department of Cardiovascular and Thoracic Surgery, Yangsan, Korea Republic of
| | - Y H Park
- Pusan National University Yangsan Hospital, Department of internal medicine, Yangsan-si, Korea Republic of
| | - J H Kim
- Pusan National University Yangsan Hospital, Department of internal medicine, Yangsan-si, Korea Republic of
| | - S K Lee
- Pusan National University, Department of Cardiovascular and Thoracic Surgery, Yangsan, Korea Republic of
| | - K J Chun
- Pusan National University Yangsan Hospital, Department of internal medicine, Yangsan-si, Korea Republic of
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Choe JC, Cha KS, Shin JY, Lee SH, Ahn J, Park JS, Lee HW, Oh JH, Choi JH, Lee HC, Hong TJ, Jeong MH. 1466Prognosis of biodegradable polymer drug-eluting stents versus second-generation durable polymer drug-eluting stents in acute myocardial infarction patients following percutaneous coronary intervention. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.1466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- J C Choe
- Pusan National University Hospital, Department of Cardiology, Pusan, Korea Republic of
| | - K S Cha
- Pusan National University Hospital, Department of Cardiology, Pusan, Korea Republic of
| | - J Y Shin
- Pusan National University Hospital, Department of Cardiology, Pusan, Korea Republic of
| | - S H Lee
- Pusan National University Hospital, Department of Cardiology, Pusan, Korea Republic of
| | - J Ahn
- Pusan National University Hospital, Department of Cardiology, Pusan, Korea Republic of
| | - J S Park
- Pusan National University Hospital, Department of Cardiology, Pusan, Korea Republic of
| | - H W Lee
- Pusan National University Hospital, Department of Cardiology, Pusan, Korea Republic of
| | - J H Oh
- Pusan National University Hospital, Department of Cardiology, Pusan, Korea Republic of
| | - J H Choi
- Pusan National University Hospital, Department of Cardiology, Pusan, Korea Republic of
| | - H C Lee
- Pusan National University Hospital, Department of Cardiology, Pusan, Korea Republic of
| | - T J Hong
- Pusan National University Hospital, Department of Cardiology, Pusan, Korea Republic of
| | - M H Jeong
- Chonnam National University Hospital, Department of Cardiology, Gwangju, Korea Republic of
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47
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Park I, Choi JH, Kim EK, Kim SM, Yang JH, Song YB, Hahn JY, Choi SH, Gwon HC, Lee SH, Choi YH, Oh JK. P1790Non-invasive identification of coronary collateral vessels by coronary computed tomography. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- I Park
- International ST.Mary's Hospital, Department of Internal medicine, Division of Cardiology, Incheon, Korea Republic of
| | - J H Choi
- Samsung Medical Center, Cardiology, Seoul, Korea Republic of
| | - E K Kim
- Samsung Medical Center, Cardiology, Seoul, Korea Republic of
| | - S M Kim
- Samsung Medical Center, Department of Radiology, Seoul, Korea Republic of
| | - J H Yang
- Samsung Medical Center, Cardiology, Seoul, Korea Republic of
| | - Y B Song
- Samsung Medical Center, Cardiology, Seoul, Korea Republic of
| | - J Y Hahn
- Samsung Medical Center, Cardiology, Seoul, Korea Republic of
| | - S H Choi
- Samsung Medical Center, Cardiology, Seoul, Korea Republic of
| | - H C Gwon
- Samsung Medical Center, Cardiology, Seoul, Korea Republic of
| | - S H Lee
- Samsung Medical Center, Cardiology, Seoul, Korea Republic of
| | - Y H Choi
- Samsung Medical Center, Department of Radiology, Seoul, Korea Republic of
| | - J K Oh
- Mayo Clinic, Department of Internal medicine, Rochester, United States of America
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48
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Tang Z, Blatnik M, Broussard LJ, Choi JH, Clayton SM, Cude-Woods C, Currie S, Fellers DE, Fries EM, Geltenbort P, Gonzalez F, Hickerson KP, Ito TM, Liu CY, MacDonald SWT, Makela M, Morris CL, O'Shaughnessy CM, Pattie RW, Plaster B, Salvat DJ, Saunders A, Wang Z, Young AR, Zeck BA. Search for the Neutron Decay n→X+γ, Where X is a Dark Matter Particle. Phys Rev Lett 2018; 121:022505. [PMID: 30085691 DOI: 10.1103/physrevlett.121.022505] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 05/01/2018] [Indexed: 06/08/2023]
Abstract
Fornal and Grinstein recently proposed that the discrepancy between two different methods of neutron lifetime measurements, the beam and bottle methods, can be explained by a previously unobserved dark matter decay mode, n→X+γ. We perform a search for this decay mode over the allowed range of energies of the monoenergetic γ ray for X to be dark matter. A Compton-suppressed high-purity germanium detector is used to identify γ rays from neutron decay in a nickel-phosphorous-coated stainless-steel bottle. A combination of Monte Carlo and radioactive source calibrations is used to determine the absolute efficiency for detecting γ rays arising from the dark matter decay mode. We exclude the possibility of a sufficiently strong branch to explain the lifetime discrepancy with 97% confidence.
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Affiliation(s)
- Z Tang
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - M Blatnik
- Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125, USA
| | - L J Broussard
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - J H Choi
- North Carolina State University, Raleigh, North Carolina 27695, USA
| | - S M Clayton
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - C Cude-Woods
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
- North Carolina State University, Raleigh, North Carolina 27695, USA
| | - S Currie
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - D E Fellers
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - E M Fries
- Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125, USA
| | | | - F Gonzalez
- Department of Physics, Indiana University, Bloomington, Indiana 47408, USA
| | - K P Hickerson
- Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125, USA
| | - T M Ito
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - C-Y Liu
- Department of Physics, Indiana University, Bloomington, Indiana 47408, USA
| | - S W T MacDonald
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - M Makela
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - C L Morris
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | | | - R W Pattie
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - B Plaster
- University of Kentucky, Lexington, Kentucky 40506, USA
| | - D J Salvat
- University of Washington, Seattle, Washington 98195-1560, USA
| | - A Saunders
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - Z Wang
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - A R Young
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
- North Carolina State University, Raleigh, North Carolina 27695, USA
| | - B A Zeck
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
- North Carolina State University, Raleigh, North Carolina 27695, USA
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49
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Han KI, Kim DH, Choi JH, Kim TK. Development of an inverse distance weighted active infrared stealth scheme using the repulsive particle swarm optimization algorithm. Appl Opt 2018; 57:3072-3077. [PMID: 29714339 DOI: 10.1364/ao.57.003072] [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] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 03/12/2018] [Indexed: 06/08/2023]
Abstract
Treatments for detection by infrared (IR) signals are higher than for other signals such as radar or sonar because an object detected by the IR sensor cannot easily recognize its detection status. Recently, research for actively reducing IR signal has been conducted to control the IR signal by adjusting the surface temperature of the object. In this paper, we propose an active IR stealth algorithm to synchronize IR signals from the object and the background around the object. The proposed method includes the repulsive particle swarm optimization statistical optimization algorithm to estimate the IR stealth surface temperature, which will result in a synchronization between the IR signals from the object and the surrounding background by setting the inverse distance weighted contrast radiant intensity (CRI) equal to zero. We tested the IR stealth performance in mid wavelength infrared (MWIR) and long wavelength infrared (LWIR) bands for a test plate located at three different positions on a forest scene to verify the proposed method. Our results show that the inverse distance weighted active IR stealth technique proposed in this study is proved to be an effective method for reducing the contrast radiant intensity between the object and background up to 32% as compared to the previous method using the CRI determined as the simple signal difference between the object and the background.
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50
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Kang JE, Yu JM, Choi JH, Chung IM, Pyun WB, Kim SA, Lee EK, Han NY, Yoon JH, Oh JM, Rhie SJ. Development and clinical application of an evidence-based pharmaceutical care service algorithm in acute coronary syndrome. J Clin Pharm Ther 2018; 43:366-376. [PMID: 29468708 DOI: 10.1111/jcpt.12665] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2017] [Accepted: 01/02/2018] [Indexed: 11/30/2022]
Abstract
WHAT IS KNOWN AND OBJECTIVE Drug therapies are critical for preventing secondary complications in acute coronary syndrome (ACS). The purpose of this study was to develop and apply a pharmaceutical care service (PCS) algorithm for ACS and confirm that it is applicable through a prospective clinical trial. METHODS The ACS-PCS algorithm was developed according to extant evidence-based treatment and pharmaceutical care guidelines. Quality assurance was conducted through two methods: literature comparison and expert panel evaluation. The literature comparison was used to compare the content of the algorithm with the referenced guidelines. Expert evaluations were conducted by nine experts for 75 questionnaire items. A trial was conducted to confirm its effectiveness. Seventy-nine patients were assigned to either the pharmacist-included multidisciplinary team care (MTC) group or the usual care (UC) group. The endpoints of the trial were the prescription rate of two important drugs, readmission, emergency room (ER) visit and mortality. RESULTS AND DISCUSSION The main frame of the algorithm was structured with three tasks: medication reconciliation, medication optimization and transition of care. The contents and context of the algorithm were compliant with class I recommendations and the main service items from the evidence-based guidelines. Opinions from the expert panel were mostly positive. There were significant differences in beta-blocker prescription rates in the overall period (P = .013) and ER visits (four cases, 9.76%, P = .016) in the MTC group compared to the UC group, respectively. WHAT IS NEW AND CONCLUSION We developed a PCS algorithm for ACS based on the contents of evidence-based drug therapy and the core concept of pharmacist services.
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Affiliation(s)
- J E Kang
- Division of Life and Pharmaceutical Sciences Graduate School, Ewha Womans University, Seoul, Korea.,Department of Pharmacy, National Medical Center, Seoul, Korea
| | - J M Yu
- Department of Pharmacy, Ewha Womans University Mokdong Hospital, Seoul, Korea
| | - J H Choi
- Division of Life and Pharmaceutical Sciences Graduate School, Ewha Womans University, Seoul, Korea.,Department of Pharmacy, Konkuk University Medical Center, Seoul, Korea
| | - I-M Chung
- Division of Cardiology, School of Medicine, Ewha Womans University Mokdong Hospital, Seoul, Korea
| | - W B Pyun
- Division of Cardiology, School of Medicine, Ewha Womans University Mokdong Hospital, Seoul, Korea
| | - S A Kim
- Department of Pharmacy, Ewha Womans University Mokdong Hospital, Seoul, Korea
| | - E K Lee
- Department of Pharmacy, Ewha Womans University Mokdong Hospital, Seoul, Korea
| | - N Y Han
- College of Pharmacy and Research Institute of Pharmaceutical Science, Seoul National University, Seoul, Korea
| | - J-H Yoon
- College of Pharmacy, Pusan National University, Busan, Korea
| | - J M Oh
- College of Pharmacy and Research Institute of Pharmaceutical Science, Seoul National University, Seoul, Korea
| | - S J Rhie
- Division of Life and Pharmaceutical Sciences Graduate School, Ewha Womans University, Seoul, Korea.,Department of Pharmacy, Ewha Womans University Mokdong Hospital, Seoul, Korea.,College of Pharmacy, Ewha Womans University, Seoul, Korea
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