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Hwang J, Kim S, Lee SY, Park E, Shin J, Lee JH, Kim MJ, Kim S, Park SY, Jang D, Eom I, Kim S, Song C, Kim KS, Nam D. Development of the multiplex imaging chamber at PAL-XFEL. J Synchrotron Radiat 2024; 31:469-477. [PMID: 38517754 DOI: 10.1107/s1600577524001218] [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] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 02/05/2024] [Indexed: 03/24/2024]
Abstract
Various X-ray techniques are employed to investigate specimens in diverse fields. Generally, scattering and absorption/emission processes occur due to the interaction of X-rays with matter. The output signals from these processes contain structural information and the electronic structure of specimens, respectively. The combination of complementary X-ray techniques improves the understanding of complex systems holistically. In this context, we introduce a multiplex imaging instrument that can collect small-/wide-angle X-ray diffraction and X-ray emission spectra simultaneously to investigate morphological information with nanoscale resolution, crystal arrangement at the atomic scale and the electronic structure of specimens.
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Affiliation(s)
- Junha Hwang
- Photon Science Center, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Sejin Kim
- Department of Physics, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Sung Yun Lee
- Department of Physics, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Eunyoung Park
- Department of Physics, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Jaeyong Shin
- Department of Physics, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Jae Hyuk Lee
- XFEL Beamline Department, Pohang Accelerator Laboratory, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Myong Jin Kim
- XFEL Beamline Department, Pohang Accelerator Laboratory, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Seonghan Kim
- XFEL Beamline Department, Pohang Accelerator Laboratory, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Sang Youn Park
- XFEL Beamline Department, Pohang Accelerator Laboratory, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Dogeun Jang
- XFEL Beamline Department, Pohang Accelerator Laboratory, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Intae Eom
- Photon Science Center, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Sangsoo Kim
- XFEL Beamline Department, Pohang Accelerator Laboratory, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Changyong Song
- Department of Physics, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Kyung Sook Kim
- Photon Science Center, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Daewoong Nam
- Photon Science Center, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
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Kwak IY, Kim KS, Min HJ. Association of gustatory dysfunction and Alzheimer. Rhinology 2024; 62:130-142. [PMID: 37943054 DOI: 10.4193/rhin23.235] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2023]
Abstract
BACKGROUND Chemosensory dysfunction has been reported to be involved in the pathogenesis of Alzheimer’s disease (AD). Compared with olfaction, gustatory dysfunction in AD has not been evaluated in depth. We reviewed previously published studies regarding gustatory dysfunction in patients with AD compared with healthy controls. METHODS A systematic review was conducted by searching the MEDLINE, Cochrane Library, Embase, and PubMed databases covering publications from January 2000 to February 2023. The search was performed using the keyword "Alzheimer* AND (gustatory OR taste OR gustation)." Only studies that performed gustatory function testing and compared the results between patients with AD and healthy controls were included. A random-effects meta-analysis was performed. RESULTS Twelve articles were finally included, and various gustatory tests including taste strips, the taste disk test, taste solutions, and subjective questionnaires were applied. Overall gustatory function based on the taste strip test was significantly decreased in patients with AD compared with controls in two out of three papers. The overall gustatory function of patients with AD was significantly decreased in all studies based on the taste disk and taste solution tests. We also found that the sweet taste test showed low heterogeneity across all the included studies, and there was low publication bias. In studies using subjective questionnaires, gustatory function was not significantly different between patients with AD and healthy controls in the meta-analysis. CONCLUSIONS Based on these studies, gustatory dysfunction diagnosed by gustatory function testing was closely related to AD. However, the results of subjective questionnaires were not significantly different between patients with AD and healthy controls in the current meta-analysis. As the number of studies and enrolled subjects was limited and unified gustatory function testing was lacking, further studies are needed to confirm this relationship.
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Affiliation(s)
- I-Y Kwak
- Department of Applied Statistics, Chung-Ang University, Heukseok-dong, Dongjak-gu, Seoul, South Korea
| | - K S Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Chung-Ang University College of Medicine, Heukseok-dong, Dongjak-gu, Seoul, South Korea
| | - H J Min
- Department of Otorhinolaryngology-Head and Neck Surgery, Chung-Ang University College of Medicine, Heukseok-dong, Dongjak-gu, Seoul, South Korea
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Lee CH, Jung JK, Kim KS, Kim CJ. Hierarchical channel morphology in O-rings after two cycling exposures to 70 MPa hydrogen gas: a case study of sealing failure. Sci Rep 2024; 14:5319. [PMID: 38438433 PMCID: PMC10912206 DOI: 10.1038/s41598-024-55101-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 02/20/2024] [Indexed: 03/06/2024] Open
Abstract
This study investigates the impact of high-pressure hydrogen gas exposure on the structural and morphological characteristics of O-ring materials. O-ring specimens undergo two cycles of sealing under 70 MPa hydrogen gas, and their resulting variations are examined using advanced characterization techniques, including powder X-ray diffraction (PXRD), small-angle X-ray scattering (SAXS), scanning electron microscopy (SEM) and atomic force microscopy (AFM). Our findings reveal that the lattice parameters of the O-ring material show no significant changes when exposed to 70 MPa hydrogen gas. However, in the micrometre range, the formation of a hierarchical channel morphology becomes evident. This morphology is accompanied by the separation of carbon black filler from the rubber matrix, contributing to mechanical weakening of the O-ring. These observations can be attributed to the pressure gradient that develops between the inner and outer radii of the O-ring, resulting from compression forces acting perpendicularly to the radial direction due to clamp locking.
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Affiliation(s)
- Chang Hoon Lee
- Department of Biochemical Engineering, Chosun University, Chosundae-5-gil, Dong-gu, Gwangju, 61452, Republic of Korea
| | - Jae Kap Jung
- Hydrogen Energy Materials Research Team, Korea Research Institute of Standards and Science, Daejeon, 34113, Republic of Korea.
| | - Kyung Sook Kim
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul, 02447, Republic of Korea
| | - Chang Jong Kim
- LG Chem Europe GmbH, Adolph-Prior-Straße 16, 65936, Frankfurt am Main, Germany
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Choi TK, Park J, Kim G, Jang H, Park SY, Sohn JH, Cho BI, Kim H, Kim KS, Nam I, Chun SH. Resonant X-ray emission spectroscopy using self-seeded hard X-ray pulses at PAL-XFEL. J Synchrotron Radiat 2023; 30:1038-1047. [PMID: 37738032 PMCID: PMC10624040 DOI: 10.1107/s1600577523007312] [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] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Accepted: 08/20/2023] [Indexed: 09/23/2023]
Abstract
Self-seeded hard X-ray pulses at PAL-XFEL were used to commission a resonant X-ray emission spectroscopy experiment with a von Hamos spectrometer. The self-seeded beam, generated through forward Bragg diffraction of the [202] peak in a 100 µm-thick diamond crystal, exhibited an average bandwidth of 0.54 eV at 11.223 keV. A coordinated scanning scheme of electron bunch energy, diamond crystal angle and silicon monochromator allowed us to map the Ir Lβ2 X-ray emission lines of IrO2 powder across the Ir L3-absorption edge, from 11.212 to 11.242 keV with an energy step of 0.3 eV. This work provides a reference for hard X-ray emission spectroscopy experiments utilizing self-seeded pulses with a narrow bandwidth, eventually applicable for pump-probe studies in solid-state and diluted systems.
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Affiliation(s)
- Tae-Kyu Choi
- XFEL Division, Pohang Accelerator Laboratory, POSTECH, Pohang, Gyeongbuk 37673, Republic of Korea
| | - Jaeku Park
- XFEL Division, Pohang Accelerator Laboratory, POSTECH, Pohang, Gyeongbuk 37673, Republic of Korea
| | - Gyujin Kim
- XFEL Division, Pohang Accelerator Laboratory, POSTECH, Pohang, Gyeongbuk 37673, Republic of Korea
| | - Hoyoung Jang
- XFEL Division, Pohang Accelerator Laboratory, POSTECH, Pohang, Gyeongbuk 37673, Republic of Korea
- Photon Science Center, POSTECH, Pohang, Gyeongbuk 37673, Republic of Korea
| | - Sang-Youn Park
- XFEL Division, Pohang Accelerator Laboratory, POSTECH, Pohang, Gyeongbuk 37673, Republic of Korea
| | - Jang Hyeob Sohn
- Department of Physics and Photon Science, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
| | - Byoung Ick Cho
- Department of Physics and Photon Science, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
| | - Hyunjung Kim
- Department of Physics, Sogang University, Seoul 04107, Republic of Korea
| | - Kyung Sook Kim
- XFEL Division, Pohang Accelerator Laboratory, POSTECH, Pohang, Gyeongbuk 37673, Republic of Korea
| | - Inhyuk Nam
- XFEL Division, Pohang Accelerator Laboratory, POSTECH, Pohang, Gyeongbuk 37673, Republic of Korea
| | - Sae Hwan Chun
- XFEL Division, Pohang Accelerator Laboratory, POSTECH, Pohang, Gyeongbuk 37673, Republic of Korea
- Photon Science Center, POSTECH, Pohang, Gyeongbuk 37673, Republic of Korea
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Kwon S, Han SJ, Kim KS. Differential response of MDA‑MB‑231 breast cancer and MCF10A normal breast cells to cytoskeletal disruption. Oncol Rep 2023; 50:200. [PMID: 37772386 PMCID: PMC10565893 DOI: 10.3892/or.2023.8637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 07/27/2023] [Indexed: 09/30/2023] Open
Abstract
Metastasis remains a major clinical problem in cancer diagnosis and treatment. Metastasis is the leading cause of cancer‑related mortality but is still poorly understood. Cytoskeletal proteins are considered potential therapeutic targets for metastatic cancer cells because the cytoskeleton serves a key role in the migration and invasion of these cells. Vimentin and F‑actin exhibit several functional similarities and undergo quantitative and structural changes during carcinogenesis. The present study investigated the effects of vimentin and F‑actin deficiency on the survival and motility of breast cancer cells. In metastatic breast cancer cells (MDA‑MB‑231) and breast epithelial cells (MCF10A), vimentin was knocked down by small interfering RNA and F‑actin was depolymerized by latrunculin A, respectively. The effect of reduced vimentin and F‑actin content on cell viability was analyzed using the MTT assay and the proliferative capacity was compared by analyzing the recovery rate. The effect on motility was analyzed based on two processes: The distance traveled by tracking the cell nucleus and the movement of the protrusions. The effects on cell elasticity were measured using atomic force microscopy. Separately reducing vimentin or F‑actin did not effectively inhibit the growth and motility of MDA‑MB‑231 cells; however, when both vimentin and F‑actin were simultaneously deficient, MDA‑MB‑231 cells growth and migration were severely impaired. Vimentin deficiency in MDA‑MB‑231 cells was compensated by an increase in F‑actin polymerization, but no complementary action of vimentin on the decrease in F‑actin was observed. In MCF10A cells, no complementary interaction was observed for both vimentin and F‑actin.
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Affiliation(s)
- Sangwoo Kwon
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Se Jik Han
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
- Department of Biomedical Engineering, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Kyung Sook Kim
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
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Ryu J, Lee SH, Kim S, Jeong JW, Kim KS, Nam S, Kim JE. Urban dust particles disrupt mitotic progression by dysregulating Aurora kinase B-related functions. J Hazard Mater 2023; 459:132238. [PMID: 37586242 DOI: 10.1016/j.jhazmat.2023.132238] [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: 05/16/2023] [Revised: 08/02/2023] [Accepted: 08/04/2023] [Indexed: 08/18/2023]
Abstract
Particulate matter (PM), a major component of outdoor air pollution, damages DNA and increases the risk of cancer. Although the harmful effects of PM at the genomic level are known, the detailed mechanism by which PM affects chromosomal stability remains unclear. In this study, we investigated the novel effects of PM on mitotic progression and identified the underlying mechanisms. Gene set enrichment analysis of lung cancer patients residing in countries with high PM concentrations revealed the downregulation of genes associated with mitosis and mitotic structures. We also showed that exposure of lung cancer cells in vitro to urban dust particles (UDPs) inhibits cell proliferation through a prolonged M phase. The mitotic spindles in UDP-treated cells were hyperstabilized, and the number of centrioles increased. The rate of ingression of the cleavage furrow and actin clearance from the polar cortex was reduced significantly. The defects in mitotic progression were attributed to inactivation of Aurora B at kinetochore during early mitosis, and spindle midzone and midbody during late mitosis. While previous studies demonstrated possible links between PM and mitosis, they did not specifically identify the dysregulation of spatiotemporal dynamics of mitotic proteins and structures (e.g., microtubules, centrosomes, cleavage furrow, and equatorial and polar cortex), which results in the accumulation of chromosomal instability, ultimately contributing to carcinogenicity. The data highlight the novel scientific problem of PM-induced mitotic disruption. Additionally, we introduce a practical visual method for assessing the genotoxic outcomes of airborne pollutants, which has implications for future environmental and public health research.
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Affiliation(s)
- Jaewook Ryu
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul 02447, the Republic of Korea; Department of Pharmacology, College of Medicine, Kyung Hee University, Seoul 02447, the Republic of Korea
| | - Seung Hyeun Lee
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, College of Medicine, Kyung Hee University, Seoul 02447, the Republic of Korea
| | - Sungyeon Kim
- Department of Genome Medicine and Science, AI Convergence Center for Medical Science, Gachon Institute of Genome Medicine and Science, Gachon University Gil Medical Center, Gachon University College of Medicine, Incheon 21565, the Republic of Korea
| | - Joo-Won Jeong
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul 02447, the Republic of Korea; Department of Anatomy and Neurobiology, College of Medicine, Kyung Hee University, Seoul 02447, the Republic of Korea
| | - Kyung Sook Kim
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul 02447, the Republic of Korea
| | - Seungyoon Nam
- Department of Genome Medicine and Science, AI Convergence Center for Medical Science, Gachon Institute of Genome Medicine and Science, Gachon University Gil Medical Center, Gachon University College of Medicine, Incheon 21565, the Republic of Korea; Department of Health Sciences and Technology, Gachon Advanced Institute for Health Sciences and Technology (GAIHST), Gachon University, Incheon 21999, the Republic of Korea
| | - Ja-Eun Kim
- Department of Biomedical Science, Graduate School, Kyung Hee University, Seoul 02447, the Republic of Korea; Department of Pharmacology, College of Medicine, Kyung Hee University, Seoul 02447, the Republic of Korea; Department of Precision Medicine, Graduate School, Kyung Hee University, Seoul 02447, the Republic of Korea.
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Lee TH, Kim HJ, Kim JH, Kim M, Jang WI, Kim E, Kim KS. Treatment Outcomes of Stereotactic Body Radiation Therapy for Pulmonary Metastasis from Sarcoma: A Multicenter, Retrospective Study. Int J Radiat Oncol Biol Phys 2023; 117:e314. [PMID: 37785129 DOI: 10.1016/j.ijrobp.2023.06.2344] [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) The aim of this study was to evaluate the treatment outcomes and potential dose-response relationship of stereotactic body radiation therapy (SBRT) for pulmonary metastasis of sarcoma. MATERIALS/METHODS A retrospective review of 39 patients and 71 lesions treated with SBRT from two institutions was performed. The patients had oligometastatic or oligoprogressive disease, or were receiving palliation. Doses of 20-60 Gy were delivered in 1-5 fractions. The local control per tumor (LCpT) was evaluated according to the biologically effective dose with an α/β ratio of 10 (BED10) of the prescribed dose (BED10 ≥ 100 Gy vs. BED10 < 100 Gy). Clinical outcomes per patient, including local control per patient (LCpP), pulmonary progression-free rate (PPFR), any progression-free rate (APFR), and overall survival (OS) were investigated. RESULTS The median follow-up period was 27.2 months. The 1-, 2-, and 3-year LCpT rates for the entire cohort were 100.0%, 88.3%, and 73.6%, respectively. There was no observed difference in LCpT between the two BED10 groups (p = 0.180). The 3-year LCpP, PPFR, APFR, and OS rates were 78.1%, 22.7%, 12.9%, and 83.7%, respectively. Five (12.8%) patients with oligometastasis had long-term disease-free intervals, with a median survival period of 40.7 months. Factors that were associated with a worse prognosis were oligoprogression (vs. oligometastasis), multiple pulmonary metastases, and simultaneous extrathoracic metastasis. CONCLUSION SBRT for pulmonary metastasis of sarcoma is effective. Some selected patients may achieve durable response. Considerations of SBRT indication and disease extent may be needed as they may influence the prognosis.
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Affiliation(s)
- T H Lee
- Department of Radiation Oncology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - H J Kim
- Department of Radiation Oncology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - J H Kim
- Department of Radiation Oncology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - M Kim
- Department of Radiation Oncology, Korea Institute of Radiological and Medical Sciences, Seoul, Korea, Republic of (South) Korea
| | - W I Jang
- Department of Radiation Oncology, Korea Institute of Radiological and Medical Sciences, Seoul, Korea, Republic of (South) Korea
| | - E Kim
- Department of Radiation Oncology, Korea Institute of Radiological and Medical Sciences, 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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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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Han SJ, Kwon S, Kim KS. Contribution of mechanical homeostasis to epithelial-mesenchymal transition. Cell Oncol (Dordr) 2022; 45:1119-1136. [PMID: 36149601 DOI: 10.1007/s13402-022-00720-6] [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] [Accepted: 09/12/2022] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Metastasis refers to the spread of cancer cells from a primary tumor to other parts of the body via the lymphatic system and bloodstream. With tremendous effort over the past decades, remarkable progress has been made in understanding the molecular and cellular basis of metastatic processes. Metastasis occurs through five steps, including infiltration and migration, intravasation, survival, extravasation, and colonization. Various molecular and cellular factors involved in the metastatic process have been identified, such as epigenetic factors of the extracellular matrix (ECM), cell-cell interactions, soluble signaling, adhesion molecules, and mechanical stimuli. However, the underlying cause of cancer metastasis has not been elucidated. CONCLUSION In this review, we have focused on changes in the mechanical properties of cancer cells and their surrounding environment to understand the causes of cancer metastasis. Cancer cells have unique mechanical properties that distinguish them from healthy cells. ECM stiffness is involved in cancer cell growth, particularly in promoting the epithelial-mesenchymal transition (EMT). During tumorigenesis, the mechanical properties of cancer cells change in the direction opposite to their environment, resulting in a mechanical stress imbalance between the intracellular and extracellular domains. Disruption of mechanical homeostasis may be one of the causes of EMT that triggers the metastasis of cancer cells.
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Affiliation(s)
- Se Jik Han
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul, Korea.,Department of Biomedical Engineering, Graduate School, Kyung Hee University, Seoul, Korea
| | - Sangwoo Kwon
- Department of Biomedical Engineering, Graduate School, Kyung Hee University, Seoul, Korea
| | - Kyung Sook Kim
- Department of Biomedical Engineering, Graduate School, Kyung Hee University, Seoul, Korea.
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Lim KM, Han J, Lee Y, Park J, Dayem AA, Myung S, An J, Song K, Kang G, Kim S, Kwon S, Kim KS, Cho S, Kim T. Rapid production method with increased yield of high-purity extracellular vesicles obtained using extended mitochondrial targeting domain peptide. J Extracell Vesicles 2022; 11:e12274. [PMID: 36239712 PMCID: PMC9563391 DOI: 10.1002/jev2.12274] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 09/24/2022] [Accepted: 09/29/2022] [Indexed: 11/06/2022] Open
Abstract
Extracellular vesicles (EVs) are nano‐sized membranous structures involved in intercellular communication and various physiological and pathological processes. Here, we present a novel method for rapid (within 15 min), large‐scale production of high‐purity EVs using eMTDΔ4, a peptide derived from Noxa. The treatment of mesenchymal stem cells derived from human Wharton's jelly after trypsinization and subsequent eMTDΔ4 stimulation in a chemically defined sucrose buffer with orbital shaking led to a substantial increase (approximately 30‐fold) in EV production with markedly high purity (approximately 45‐fold). These EVs (TS‐eEVs) showed higher regenerative and immunomodulatory potential than natural EVs obtained from the culture media after 48 h. The calcium chelator BAPTA‐AM and calpain inhibitor ALLM, but not the natural EV biogenesis inhibitor GW4869, blocked the TS‐eEV production induced by eMTDΔ4, indicating that the eMTDΔ4‐mediated regulation of intracellular calcium levels and calpain activity are closely associated with the rapid, mass production of TS‐eEVs. The present study may lead to considerable advances in EV‐based drug development and production of stem cell‐derived EVs for cell therapy.
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Affiliation(s)
- Kyung Min Lim
- Department of Stem Cell & Regenerative Biotechnology and Institute of Advanced Regenerative ScienceKonkuk UniversityGwangjin‐guSeoulRepublic of Korea
| | - Ji‐Hye Han
- Department of Biochemistry and Molecular BiologyChosun University School of MedicineDong‐Gu, GwangjuRepublic of Korea
| | - Yoonjoo Lee
- Department of Stem Cell & Regenerative Biotechnology and Institute of Advanced Regenerative ScienceKonkuk UniversityGwangjin‐guSeoulRepublic of Korea
| | - Junghee Park
- Department of Biochemistry and Molecular BiologyChosun University School of MedicineDong‐Gu, GwangjuRepublic of Korea
| | - Ahmed Abdal Dayem
- Department of Stem Cell & Regenerative Biotechnology and Institute of Advanced Regenerative ScienceKonkuk UniversityGwangjin‐guSeoulRepublic of Korea
| | - Seung‐Hyun Myung
- Department of Biochemistry and Molecular BiologyChosun University School of MedicineDong‐Gu, GwangjuRepublic of Korea
| | - Jongyub An
- Department of Stem Cell & Regenerative Biotechnology and Institute of Advanced Regenerative ScienceKonkuk UniversityGwangjin‐guSeoulRepublic of Korea
| | - Kwonwoo Song
- Department of Stem Cell & Regenerative Biotechnology and Institute of Advanced Regenerative ScienceKonkuk UniversityGwangjin‐guSeoulRepublic of Korea
| | - Geun‐Ho Kang
- StemExOne Ltd. Konkuk UniversityGwangjin‐guSeoulRepublic of Korea
| | - Sejong Kim
- StemExOne Ltd. Konkuk UniversityGwangjin‐guSeoulRepublic of Korea
| | - Sangwoo Kwon
- Department of Biomedical EngineeringCollege of MedicineKyung Hee UniversitySeoulRepublic of Korea
| | - Kyung Sook Kim
- Department of Biomedical EngineeringCollege of MedicineKyung Hee UniversitySeoulRepublic of Korea
| | - Ssang‐Goo Cho
- Department of Stem Cell & Regenerative Biotechnology and Institute of Advanced Regenerative ScienceKonkuk UniversityGwangjin‐guSeoulRepublic of Korea,StemExOne Ltd. Konkuk UniversityGwangjin‐guSeoulRepublic of Korea
| | - Tae‐Hyoung Kim
- Department of Biochemistry and Molecular BiologyChosun University School of MedicineDong‐Gu, GwangjuRepublic of Korea,ExoCalibre Ltd. Chosun UniversityDong‐Gu, GwangjuRepublic of Korea
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11
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Lee YJ, Kim SW, Jung MH, Kim YS, Kim KS, Suh DS, Kim KH, Choi EH, Kim J, Kwon BS. Plasma-activated medium inhibits cancer stem cell-like properties and exhibits a synergistic effect in combination with cisplatin in ovarian cancer. Free Radic Biol Med 2022; 182:276-288. [PMID: 35276382 DOI: 10.1016/j.freeradbiomed.2022.03.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 03/01/2022] [Accepted: 03/02/2022] [Indexed: 12/11/2022]
Abstract
Ovarian cancer stem-like cells (CSCs) have been implicated in tumor recurrence, metastasis, and drug resistance. Accumulating evidence has demonstrated the antitumor effect of plasma-activated medium (PAM) in various carcinomas, including ovarian cancer. Thus, PAM represents a novel onco-therapeutic strategy. However, its impact on ovarian CSCs is unclear. Here, we show that ovarian CSCs resistant to high-dose conventional chemotherapeutic agents used for ovarian cancer treatment exhibited dose-dependent sensitivity to PAM. In addition, PAM treatment reduced the expression of stem cell markers and sphere formation, along with the aldehyde dehydrogenase- or CD133-positive cell population. We further investigated the effect of PAM in combination with other chemotherapeutics on ovarian CSCs in vitro. PAM exhibited synergistic cytotoxicity with cisplatin (CDDP) but not with paclitaxel and doxorubicin. In a peritoneal metastasis xenograft model established via intraperitoneal spheroid injection, PAM intraperitoneal therapy significantly suppressed peritoneal carcinomatosis (tumor size and number), with a more significant decrease observed due to the combined effects of PAM and CDDP with no side effects. Taken together, our results indicate that PAM inhibits ovarian CSC traits and exhibits synergetic cytotoxicity with CDDP, demonstrating PAM as a promising intraparietal chemotherapy for enhancing antitumor efficacy and reducing side effects.
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Affiliation(s)
- Young Joo Lee
- Department of Obstetrics and Gynecology, School of Medicine, Kyung Hee Medical Center, Kyung Hee University, Seoul, 02447, South Korea
| | - Sung Wook Kim
- Department of Obstetrics and Gynecology, School of Medicine, Kyung Hee Medical Center, Kyung Hee University, Seoul, 02447, South Korea
| | - Min Hyung Jung
- Department of Obstetrics and Gynecology, School of Medicine, Kyung Hee Medical Center, Kyung Hee University, Seoul, 02447, South Korea
| | - Young Sun Kim
- Department of Obstetrics and Gynecology, School of Medicine, Kyung Hee Medical Center, Kyung Hee University, Seoul, 02447, South Korea
| | - Kyung Sook Kim
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul, 02447, South Korea
| | - Dong Soo Suh
- Departments of Obstetrics and Gynecology, Medical Research Institute, Pusan National University School of Medicine, Busan, South Korea
| | - Ki Hyung Kim
- Departments of Obstetrics and Gynecology, Medical Research Institute, Pusan National University School of Medicine, Busan, South Korea
| | - Eun Ha Choi
- Plasma Bioscience Research Center, Kwangwoon University, Seoul, 139-701, South Korea
| | - Jongmin Kim
- Division of Biological Sciences, Sookmyung Women's University, Seoul, 04310, South Korea; Research Institute for Women's Health, Sookmyung Women's University, Seoul, 04310, South Korea.
| | - Byung Su Kwon
- Department of Obstetrics and Gynecology, School of Medicine, Kyung Hee Medical Center, Kyung Hee University, Seoul, 02447, South Korea.
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12
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Park YM, Noh EM, Lee HY, Shin DY, Lee YH, Kang YG, Na EJ, Kim JH, Yang HJ, Kim MJ, Kim KS, Bae JS, Lee YR. Anti-diabetic effects of Protaetia brevitarsis in pancreatic islets and a murine diabetic model. Eur Rev Med Pharmacol Sci 2021; 25:7508-7515. [PMID: 34919253 DOI: 10.26355/eurrev_202112_27450] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE In this study, the antidiabetic efficacy of Protaetia brevitarsis in alloxan-treated pancreatic islets and db/db mice was investigated. P. brevitarsis was tested for alloxan-mediated cytotoxicity and nitric oxide production in mice pancreatic islets. MATERIALS AND METHODS The anti-diabetic effect of P. brevitarsis was also evaluated in db/db mice after 4 weeks of administration. Biochemical analysis, oral glucose tolerance test (OGTT), and pancreatic histological analysis were performed. RESULTS P. brevitarsis displayed hypoglycemic activity in alloxan-treated mice pancreatic islets. Our results showed that P. brevitarsis protects pancreatic islets from cytotoxicity. Moreover, daily oral supplementation with P. brevitarsis for 4 weeks reduced plasma glucose levels without affecting body weight and food intake, elevated glucose tolerance in OGTT, improved blood lipid parameters, inhibited fat accumulation, and restored islet structure of db/db mice. CONCLUSIONS The present study provided evidence for the anti‑diabetic effect of P. brevitarsis in alloxan-treated pancreatic islets and db/db mice. These results suggest that P. brevitarsis may be used as an adjunctive anti-diabetic agent or as a functional food.
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Affiliation(s)
- Y M Park
- INVIVO Co. Ltd., Iksan, Jeonbuk, Korea.
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13
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Han SJ, Noh M, Jang J, Lee JB, Kim KS. Cover Image, Volume 236, Number 11, November 2021. J Cell Physiol 2021. [DOI: 10.1002/jcp.30602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Se Jik Han
- Department of Biomedical Engineering, Graduate School Kyung Hee University Seoul Korea
- Department of Biomedical Engineering Kyung Hee University Seoul Korea
| | - Minjoo Noh
- Innovation Lab, Department of Innovation Cosmax R&I Center Gyeonggi do Korea
| | - Jihui Jang
- Innovation Lab, Department of Innovation Cosmax R&I Center Gyeonggi do Korea
| | - Jun Bae Lee
- Innovation Lab, Department of Innovation Cosmax R&I Center Gyeonggi do Korea
| | - Kyung Sook Kim
- Department of Biomedical Engineering Kyung Hee University Seoul Korea
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14
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Kim S, Kim Y, Kim J, Choi S, Yun K, Kim D, Lim SY, Kim S, Chun SH, Park J, Eom I, Kim KS, Koo TY, Ou Y, Katmis F, Wen H, DiChiara A, Walko DA, Landahl EC, Cheong H, Sim E, Moodera J, Kim H. Ultrafast Carrier-Lattice Interactions and Interlayer Modulations of Bi 2Se 3 by X-ray Free-Electron Laser Diffraction. Nano Lett 2021; 21:8554-8562. [PMID: 34623164 DOI: 10.1021/acs.nanolett.1c01424] [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] [Indexed: 06/13/2023]
Abstract
As a 3D topological insulator, bismuth selenide (Bi2Se3) has potential applications for electrically and optically controllable magnetic and optoelectronic devices. Understanding the coupling with its topological phase requires studying the interactions of carriers with the lattice on time scales down to the subpicosecond regime. Here, we investigate the ultrafast carrier-induced lattice contractions and interlayer modulations in Bi2Se3 thin films by time-resolved diffraction using an X-ray free-electron laser. The lattice contraction depends on the carrier concentration and is followed by an interlayer expansion accompanied by oscillations. Using density functional theory and the Lifshitz model, the initial contraction can be explained by van der Waals force modulation of the confined free carrier layers. Our theoretical calculations suggest that the band inversion, related to a topological phase transition, is modulated by the expansion of the interlayer distance. These results provide insights into the topological phase control by light-induced structural change on ultrafast time scales.
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Affiliation(s)
- Sungwon Kim
- Department of Physics, Sogang University, Seoul 04107, Korea
| | - Youngsam Kim
- Department of Chemistry, Yonsei University, Seoul 03722, Korea
| | - Jaeseung Kim
- Department of Physics, Sogang University, Seoul 04107, Korea
| | - Sungwook Choi
- Department of Physics, Sogang University, Seoul 04107, Korea
| | - Kyuseok Yun
- Department of Physics, Sogang University, Seoul 04107, Korea
| | - Dongjin Kim
- Department of Physics, Sogang University, Seoul 04107, Korea
| | - Soo Yeon Lim
- Department of Physics, Sogang University, Seoul 04107, Korea
| | - Sunam Kim
- Pohang Accelerator Laboratory, Pohang 37673, Korea
| | | | - Jaeku Park
- Pohang Accelerator Laboratory, Pohang 37673, Korea
| | - Intae Eom
- Pohang Accelerator Laboratory, Pohang 37673, Korea
| | | | | | - Yunbo Ou
- Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Ferhat Katmis
- Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Haidan Wen
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Anthony DiChiara
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Donald A Walko
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, United States
| | - Eric C Landahl
- Department of Physics, DePaul University, Chicago, Illinois 60614, United States
| | - Hyeonsik Cheong
- Department of Physics, Sogang University, Seoul 04107, Korea
| | - Eunji Sim
- Department of Chemistry, Yonsei University, Seoul 03722, Korea
| | - Jagadeesh Moodera
- Francis Bitter Magnet Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Hyunjung Kim
- Department of Physics, Sogang University, Seoul 04107, Korea
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15
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Vuong TD, Sonah H, Patil G, Meinhardt C, Usovsky M, Kim KS, Belzile F, Li Z, Robbins R, Shannon JG, Nguyen HT. Identification of genomic loci conferring broad-spectrum resistance to multiple nematode species in exotic soybean accession PI 567305. Theor Appl Genet 2021; 134:3379-3395. [PMID: 34297174 DOI: 10.1007/s00122-021-03903-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 06/29/2021] [Indexed: 06/13/2023]
Abstract
KEY MESSAGE Genetic analysis identified a unique combination of major QTL for resistance to important soybean nematodes concurrently present in a single soybean accession, which has not been reported earlier. An exotic soybean [Glycine max (L.) Merr.] accession, PI 567305, was reported to be highly resistant to three important nematode species, soybean cyst (SCN), root-knot (RKN), and reniform (RN) nematodes. However, genetic basis controlling broad-spectrum resistance in this germplasm has not been investigated. We report results of genetic analysis to identify genomic loci conferring resistance to these nematode species. A bi-parental population consisting of 242 F8-derived recombinant inbred lines (RILs) was developed from a cross of a nematode susceptible cultivar, Magellan, and resistant accession, PI 567305. The RILs were phenotyped for nematode resistance to three SCN HG types. They were genotyped using the Infinium SoySNP6K BeadChips and genotype-by-sequencing (GBS) methods in an attempt to evaluate the cost-effectiveness and efficiency of these two genotyping platforms. Genetic analysis confirmed the major QTL on chromosomes (Chrs) 10 and 18 with broad-spectrum resistance to the three nematodes present in this germplasm. Haplotype and copy number variation analyses of SCN resistance QTL indicated that PI 567305 has a different haplotype, which is associated with likely a unique SCN resistance mechanism different from Peking- or PI 88788-type resistance. The evaluations of both Infinium Beadchip- and GBS-based genotyping technologies provided comprehensive insights for researchers to choose a cost-effective and efficient platform for QTL mapping and for other genomic studies in soybeans.
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Affiliation(s)
- T D Vuong
- Division of Plant Sciences, University of Missouri, Columbia, MO, 65211, USA.
| | - H Sonah
- Département de Phytologie, Faculté Des Sciences de L'Agriculture Et de L'Alimentation, Centre de Recherche en Horticulture, Université Laval, Québec, Canada
- National Agri-Food Biotechnology Institute, Sector 81, Mohali-140306, P.O. Manauli, Punjab, India
| | - G Patil
- Institute of Genomics for Crop Abiotic Stress Tolerance (IGCAST), Department of Plant and Soil Science, Texas Tech University, Lubbock, TX, 79409, USA
| | - C Meinhardt
- Division of Plant Sciences, University of Missouri, Columbia, MO, 65211, USA
| | - M Usovsky
- Division of Plant Sciences, University of Missouri, Columbia, MO, 65211, USA
| | - K S Kim
- Division of Plant Sciences, University of Missouri, Columbia, MO, 65211, USA
- LG Chem-FarmHannong, Ltd, Daejeon, 34115, Republic of Korea
| | - F Belzile
- Département de Phytologie, Université Laval, Pavillon Charles-Eugène Marchand 1030, Avenue de la Médecine, Québec, Canada
| | - Z Li
- Institute of Plant Breeding, Genetics, Genomics and Department of Crop and Soil Sciences, University of Georgia, Athens, GA, 30602, USA
| | - R Robbins
- Department of Plant Pathology, University of Arkansas, Fayetteville, AR, 72701, USA
| | - J G Shannon
- Division of Plant Sciences, University of Missouri, Columbia, MO, 65211, USA
| | - H T Nguyen
- Division of Plant Sciences, University of Missouri, Columbia, MO, 65211, USA.
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16
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Figueira I, Garcia G, Pimpão RC, Terrasso AP, Costa I, Almeida AF, Tavares L, Pais TF, Pinto P, Ventura MR, Filipe A, McDougall GJ, Stewart D, Kim KS, Palmela I, Brites D, Brito MA, Brito C, Santos CN. Correction to: Polyphenols journey through blood-brain barrier towards neuronal protection. Sci Rep 2021; 11:17112. [PMID: 34408218 PMCID: PMC8373959 DOI: 10.1038/s41598-021-96179-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- I Figueira
- Instituto de Tecnologia Quı́mica e Biológica-António Xavier, Universidade Nova de Lisboa, Av. da República, EAN, 2781-901, Oeiras, Portugal.,Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2781-901, Oeiras, Portugal
| | - G Garcia
- Instituto de Tecnologia Quı́mica e Biológica-António Xavier, Universidade Nova de Lisboa, Av. da República, EAN, 2781-901, Oeiras, Portugal.,Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2781-901, Oeiras, Portugal
| | - R C Pimpão
- Instituto de Tecnologia Quı́mica e Biológica-António Xavier, Universidade Nova de Lisboa, Av. da República, EAN, 2781-901, Oeiras, Portugal.,Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2781-901, Oeiras, Portugal
| | - A P Terrasso
- Instituto de Tecnologia Quı́mica e Biológica-António Xavier, Universidade Nova de Lisboa, Av. da República, EAN, 2781-901, Oeiras, Portugal.,Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2781-901, Oeiras, Portugal
| | - I Costa
- Instituto de Tecnologia Quı́mica e Biológica-António Xavier, Universidade Nova de Lisboa, Av. da República, EAN, 2781-901, Oeiras, Portugal.,Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2781-901, Oeiras, Portugal
| | - A F Almeida
- Instituto de Tecnologia Quı́mica e Biológica-António Xavier, Universidade Nova de Lisboa, Av. da República, EAN, 2781-901, Oeiras, Portugal.,Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2781-901, Oeiras, Portugal
| | - L Tavares
- Instituto de Tecnologia Quı́mica e Biológica-António Xavier, Universidade Nova de Lisboa, Av. da República, EAN, 2781-901, Oeiras, Portugal.,Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2781-901, Oeiras, Portugal
| | - T F Pais
- Instituto Gulbenkian de Ciência, Rua da Quinta Grande, 6, 2780-156, Oeiras, Portugal
| | - P Pinto
- Instituto de Tecnologia Quı́mica e Biológica-António Xavier, Universidade Nova de Lisboa, Av. da República, EAN, 2781-901, Oeiras, Portugal.,Escola Superior Agrária, Instituto Politécnico de Santarém, Qta do Galinheiro, Santarém, Portugal
| | - M R Ventura
- Instituto de Tecnologia Quı́mica e Biológica-António Xavier, Universidade Nova de Lisboa, Av. da República, EAN, 2781-901, Oeiras, Portugal
| | - A Filipe
- Medical Department, Grupo Tecnimede, 2710-089, Sintra, Portugal
| | - G J McDougall
- The James Hutton Institute, Invergowrie, Dundee, DD2 5DA, Scotland, UK
| | - D Stewart
- The James Hutton Institute, Invergowrie, Dundee, DD2 5DA, Scotland, UK.,Engineering and Physical Sciences, Heriot Watt University, Edinburgh, EH14 4AS, Scotland, UK.,NIBIO, Norwegian Institute of Bioeconomy Research, Pb 115, NO-1431, Ås, Norway
| | - K S Kim
- Division of Infectious Diseases, Johns Hopkins University School of Medicine, 600 North Wolfe Street Park 256, Baltimore, MD, 21287, USA
| | - I Palmela
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003, Lisbon, Portugal
| | - D Brites
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003, Lisbon, Portugal.,Department of Biochemistry and Human Biology, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003, Lisbon, Portugal
| | - M A Brito
- Research Institute for Medicines (iMed.ULisboa), Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003, Lisbon, Portugal.,Department of Biochemistry and Human Biology, Faculty of Pharmacy, Universidade de Lisboa, Av. Prof. Gama Pinto, 1649-003, Lisbon, Portugal
| | - C Brito
- Instituto de Tecnologia Quı́mica e Biológica-António Xavier, Universidade Nova de Lisboa, Av. da República, EAN, 2781-901, Oeiras, Portugal.,Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2781-901, Oeiras, Portugal
| | - C N Santos
- Instituto de Tecnologia Quı́mica e Biológica-António Xavier, Universidade Nova de Lisboa, Av. da República, EAN, 2781-901, Oeiras, Portugal. .,Instituto de Biologia Experimental e Tecnológica, Apartado 12, 2781-901, Oeiras, Portugal.
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17
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Han SJ, Noh M, Jang J, Lee JB, Kim KS. Electric fields regulate cellular elasticity through intracellular Ca 2+ concentrations. J Cell Physiol 2021; 236:7450-7463. [PMID: 33993476 DOI: 10.1002/jcp.30417] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 04/25/2021] [Accepted: 04/28/2021] [Indexed: 11/06/2022]
Abstract
Cellular elasticity is a key factor related to a broad range of physiological and pathological processes. The elasticity of a single cell has thus emerged as a potential biomarker to characterize the cellular state. Both internal and external stimuli affect cellular elasticity, and changes in elasticity can cause alterations in cellular characteristics or function. The application of electric fields (EFs) is a promising method that can be used to change cellular elasticity; however, the mechanisms underlying its effect remain unknown. Here, we demonstrate EFs-induced elasticity changes in human dermal fibroblasts and discuss the underlying mechanism related to actin polymerization. Cellular elasticity increases after EF (50 mV/mm) stimulation, reaching a maximum at 30 min before decreasing between 30 and 120 min. The cellular elasticity under EF stimulation, regardless of stimulation time, is higher than that of the control. F-actin regulates the elasticity of cells through gelsolin activation. We show changes in intracellular Ca2+ caused by EFs, which induced gelsolin activation and F-actin content changes. This result demonstrates a series of processes in which external electrical stimulation conditions regulate cellular elasticity.
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Affiliation(s)
- Se Jik Han
- Department of Biomedical Engineering, Graduate School, Kyung Hee University, Seoul, Korea.,Department of Biomedical Engineering, Kyung Hee University, Seoul, Korea
| | - Minjoo Noh
- Innovation Lab, Department of Innovation, Cosmax R&I Center, Gyeonggi do, Korea
| | - Jihui Jang
- Innovation Lab, Department of Innovation, Cosmax R&I Center, Gyeonggi do, Korea
| | - Jun Bae Lee
- Innovation Lab, Department of Innovation, Cosmax R&I Center, Gyeonggi do, Korea
| | - Kyung Sook Kim
- Department of Biomedical Engineering, Kyung Hee University, Seoul, Korea
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18
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Cho DH, Shen Z, Ihm Y, Wi DH, Jung C, Nam D, Kim S, Park SY, Kim KS, Sung D, Lee H, Shin JY, Hwang J, Lee SY, Lee SY, Han SW, Noh DY, Loh ND, Song C. High-Throughput 3D Ensemble Characterization of Individual Core-Shell Nanoparticles with X-ray Free Electron Laser Single-Particle Imaging. ACS Nano 2021; 15:4066-4076. [PMID: 33506675 DOI: 10.1021/acsnano.0c07961] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The structures as building blocks for designing functional nanomaterials have fueled the development of versatile nanoprobes to understand local structures of noncrystalline specimens. Progress in analyzing structures of individual specimens with atomic scale accuracy has been notable recently. In most cases, however, only a limited number of specimens are inspected lacking statistics to represent the systems with structural inhomogeneity. Here, by employing single-particle imaging with X-ray free electron lasers and algorithms for multiple-model 3D imaging, we succeeded in investigating several thousand specimens in a couple of hours and identified intrinsic heterogeneities with 3D structures. Quantitative analysis has unveiled 3D morphology, facet indices, and elastic strain. The 3D elastic energy distribution is further corroborated by molecular dynamics simulations to gain mechanical insight at the atomic level. This work establishes a route to high-throughput characterization of individual specimens in large ensembles, hence overcoming statistical deficiency while providing quantitative information at the nanoscale.
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Affiliation(s)
- Do Hyung Cho
- Department of Physics and Photon Science Center, POSTECH, Pohang 37673, Korea
| | - Zhou Shen
- Department of Physics, National University of Singapore, Singapore 117551
| | - Yungok Ihm
- Department of Chemistry, POSTECH, Pohang 37673, Korea
| | - Dae Han Wi
- Center for Nanotectonics, Department of Chemistry and KI for the NanoCentury, KAIST, Daejeon 34141, Korea
| | - Chulho Jung
- Department of Physics and Photon Science Center, POSTECH, Pohang 37673, Korea
| | - Daewoong Nam
- Pohang Accelerator Laboratory, POSTECH, Pohang 37673, Korea
| | - Sangsoo Kim
- Pohang Accelerator Laboratory, POSTECH, Pohang 37673, Korea
| | - Sang-Youn Park
- Pohang Accelerator Laboratory, POSTECH, Pohang 37673, Korea
| | - Kyung Sook Kim
- Pohang Accelerator Laboratory, POSTECH, Pohang 37673, Korea
| | - Daeho Sung
- Department of Physics and Photon Science Center, POSTECH, Pohang 37673, Korea
| | - Heemin Lee
- Department of Physics and Photon Science Center, POSTECH, Pohang 37673, Korea
| | - Jae-Yong Shin
- Department of Physics and Photon Science Center, POSTECH, Pohang 37673, Korea
| | - Junha Hwang
- Department of Physics and Photon Science Center, POSTECH, Pohang 37673, Korea
| | - Sung Yun Lee
- Department of Physics and Photon Science Center, POSTECH, Pohang 37673, Korea
| | - Su Yong Lee
- Pohang Accelerator Laboratory, POSTECH, Pohang 37673, Korea
| | - Sang Woo Han
- Center for Nanotectonics, Department of Chemistry and KI for the NanoCentury, KAIST, Daejeon 34141, Korea
| | - Do Young Noh
- Department of Physics and Photon Science, Gwangju Institute of Science and Technology, Gwangju 61005, Korea
- Institute for Basic Science (IBS), Daejeon 34126, Korea
| | - N Duane Loh
- Department of Physics, National University of Singapore, Singapore 117551
- Department of Biological Sciences, National University of Singapore, Singapore 117557
| | - Changyong Song
- Department of Physics and Photon Science Center, POSTECH, Pohang 37673, Korea
- Asia Pacific Center for Theoretical Physics (APCTP), POSTECH, Pohang 37673, Korea
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19
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Abstract
The three-dimensional (3D) multicellular tumor spheroids (MCTs) model is becoming an essential tool in cancer research as it expresses an intermediate complexity between 2D monolayer models and in vivo solid tumors. MCTs closely resemble in vivo solid tumors in many aspects, such as the heterogeneous architecture, internal gradients of signaling factors, nutrients, and oxygenation. MCTs have growth kinetics similar to those of in vivo tumors, and the cells in spheroid mimic the physical interaction of the tumors, such as cell-to-cell and cell-to-extracellular matrix interactions. These similarities provide great potential for studying the biological properties of tumors and a promising platform for drug screening and therapeutic efficacy evaluation. However, MCTs are not well adopted as preclinical tools for studying tumor behavior and therapeutic efficacy up to now. In this review, we addressed the challenges with MCTs application and discussed various efforts to overcome the challenges.
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Affiliation(s)
- Se Jik Han
- Department of Biomedical Engineering, Graduate School, Kyung Hee University, Seoul, 02447, Korea
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul, 02447, Korea
| | - Sangwoo Kwon
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul, 02447, Korea
| | - Kyung Sook Kim
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul, 02447, Korea.
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20
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Byun JY, Ji YJ, Kim KH, Kim KS, Tak HW, Ellingboe AR, Yeom GY. Characteristics of silicon nitride deposited by very high frequency (162 MHz)-plasma enhanced atomic layer deposition using bis(diethylamino)silane. Nanotechnology 2021; 32:075706. [PMID: 32942270 DOI: 10.1088/1361-6528/abb974] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Silicon nitrides, deposited by capacitively coupled plasma (CCP)-type plasma enhanced atomic layer deposition (PEALD), are generally applied to today's nanoscale semiconductor devices, and are currently being investigated in terms of their potential applications in the context of flexible displays, etc. During the PEALD process, 13.56 MHz rf power is generally employed for the generation of reactive gas plasma. In this study, the effects of a higher plasma generation frequency of 162 MHz on both plasma and silicon nitride film characteristics are investigated for the purpose of silicon nitride PEALD, using bis(diethylamino)silane (BDEAS) as the silicon precursor, and N2 plasma as the reactant gas. The PEALD silicon nitride film deposited using the 162 MHz CCP exhibited improved film characteristics, such as reduced surface roughness, a lower carbon percentage, a higher N/Si ratio, a lower wet etch rate in a diluted HF solution, lower leakage current, and higher electric breakdown field, and more uniform step coverage of the silicon nitride film deposited in a high aspect ratio trench, as compared to silicon nitride PEALD using 13.56 MHz CCP. These improved PEALD silicon nitride film characteristics are believed to be related to the higher ion density, higher reactive gas dissociation, and lower ion bombardment energy to the substrate observed in N2 plasma with a 162 MHz CCP.
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Affiliation(s)
- J Y Byun
- School of Advanced Materials Science and Engineering, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 16419, Republic of Korea
| | - Y J Ji
- School of Advanced Materials Science and Engineering, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 16419, Republic of Korea
| | - K H Kim
- School of Advanced Materials Science and Engineering, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 16419, Republic of Korea
| | - K S Kim
- School of Advanced Materials Science and Engineering, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 16419, Republic of Korea
- Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA, United States of America
| | - H W Tak
- School of Advanced Materials Science and Engineering, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 16419, Republic of Korea
| | - A R Ellingboe
- Plasma Research Laboratory, School of Physical Science, Dublin City University, Dublin, Ireland
| | - G Y Yeom
- School of Advanced Materials Science and Engineering, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 16419, Republic of Korea
- SKKU Advanced Institute of Nano Technology (SAINT), Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 16419, Republic of Korea
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21
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Lee KH, Kim JS, Hong SH, Seong D, Choi YR, Ahn YT, Kim KS, Kim SE, Lee S, Sim W, Kim D, Jun B, Yang JW, Yon DK, Lee SW, Kim MS, Dragioti E, Li H, Jacob L, Koyanagi A, Abou Ghayda R, Shin JI, Smith L. Risk factors of COVID-19 mortality: a systematic review of current literature and lessons from recent retracted articles. Eur Rev Med Pharmacol Sci 2020; 24:13089-13097. [PMID: 33378062 DOI: 10.26355/eurrev_202012_24216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Recently, two influential articles that reported the association of (hydroxy)chloroquine or angiotensin converting enzyme (ACE) inhibitors and coronavirus disease 2019 (COVID-19) mortality were retracted due to significant methodological issues. Therefore, we aimed to analyze the same clinical issues through an improved research method and to find out the differences from the retracted papers. We systematically reviewed pre-existing literature, and compared the results with those of the retracted papers to gain a novel insight. MATERIALS AND METHODS We extracted common risk factors identified in two retracted papers, and conducted relevant publication search until June 26, 2020 in PubMed. Then, we analyzed the risk factors for COVID-19 mortality and compared them to those of the retracted papers. RESULTS Our systematic review demonstrated that most demographic and clinical risk factors for COVID-19 mortality were similar to those of the retracted papers. However, while the retracted paper indicated that both (hydroxy)chloroquine monotherapy and combination therapy with macrolide were associated with higher risk of mortality, our study showed that only combination therapy of hydroxychloroquine and macrolide was associated with higher risk of mortality (odds ratio 2.33; 95% confidence interval 1.63-3.34). In addition, our study demonstrated that use of ACE inhibitors or angiotensin receptor blockers (ARBs) was associated with reduced risk of mortality (0.77; 0.65-0.91). CONCLUSIONS When analyzing the same clinical issues with the two retracted papers through a systematic review of randomized controlled trials and relevant cohort studies, we found out that (hydroxy)chloroquine monotherapy was not associated with higher risk of mortality, and that the use of ACE inhibitors or ARBs was associated with reduced risk of mortality in COVID-19 patients.
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Affiliation(s)
- K H Lee
- Department of Pediatrics, Yonsei University College of Medicine, Seoul, Republic of Korea.
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22
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Min HJ, Choe JW, Kim KS, Yoon JH, Kim CH. High-mobility group box 1 protein induces epithelialmesenchymal transition in upper airway epithelial cells. Rhinology 2020; 58:495-505. [PMID: 32478338 DOI: 10.4193/rhin18.281] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND In the treatment of rhinosinusitis, nasal polyps are a major problem, and the epithelial-to-mesenchymal transition (EMT) process is considered pivotal in their development. Although various studies have addressed the role of high mobility group box 1 (HMGB1) nuclear protein in this setting, its impact on EMT has yet to be evaluated. Our aim was the pathogenic mechanism of HMGB1 in EMT and EMT-induced upper respiratory nasal polyps. METHODS We investigated the EMT-related effects of HMGB1 in human nasal epithelial (HNE) cells using western blot analysis, transepithelial-electrical resistance (TEER) testing, wound healing assay, and immunofluorescence. HNE cells were incubated in a low-oxygen environment to evaluate the role of HMGB1 in hypoxia-induced EMT. Further support for our in vitro findings was obtained through murine models. Human nasal polyps and nasal lavage fluid samples were collected for western blotting, immunohistochemistry, and enzyme-linked immunosorbent assay (ELISA). RESULTS HMGB1 increased mesenchymal markers and decreased epithelial markers in HNE cells. Hypoxia-induced HMGB1 in turn induced EMT, apparently through RAGE signaling. We verified HMGB1-induced EMT in the upper respiratory epithelium of mice by instilling intranasal HMGB1. In testing of human nasal polyps, HMGB1 and mesenchymal markers were heightened, whereas epithelial markers were reduced, compared with tissue controls. CONCLUSION HMGB1 secretion in nasal epithelium may be a major pathogenic factor in upper respiratory EMT, contributing to nasal polyps.
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Affiliation(s)
- H J Min
- Department of Otorhinolaryngology-Head and Neck Surgery, Chung-Ang University College of Medicine, Seoul, Republic of Korea; Biomedical Research Institute, Chung-Ang University Hospital, Seoul, Republic of Korea
| | - J W Choe
- Department of Otorhinolaryngology-Head and Neck Surgery, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - K S Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - J H Yoon
- The Airway Mucus Institute, Yonsei University College of Medicine, Seoul, Republic of Korea 3 The Research Center for Human Natural Defense System, Yonsei University College of Medicine, Seoul, Republic of Korea 4 Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - C H Kim
- The Airway Mucus Institute, Yonsei University College of Medicine, Seoul, Republic of Korea; Department of Otorhinolaryngology, Yonsei University College of Medicine, Seoul, Republic of Korea; Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
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23
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Kim JK, Chun EJ, Yang SY, Kim KS, Kim SS, Kim CW. Development and efficacy of a nested real-time quantitative polymerase chain reaction to identify the cytochrome c oxidase subunit 1 gene of Sarcoptes scabiei var. hominis for diagnosis and monitoring of ordinary scabies. Br J Dermatol 2020; 183:1116-1117. [PMID: 32594512 DOI: 10.1111/bjd.19340] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 06/17/2020] [Accepted: 06/20/2020] [Indexed: 11/28/2022]
Affiliation(s)
- J K Kim
- Department of Dermatology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - E J Chun
- Department of Dermatology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - S Y Yang
- Department of Dermatology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - K S Kim
- Department of Dermatology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - S S Kim
- Department of Dermatology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - C W Kim
- Department of Dermatology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
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24
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Srinivas V, Banerjee R, Lebrette H, Jones JC, Aurelius O, Kim IS, Pham CC, Gul S, Sutherlin KD, Bhowmick A, John J, Bozkurt E, Fransson T, Aller P, Butryn A, Bogacz I, Simon P, Keable S, Britz A, Tono K, Kim KS, Park SY, Lee SJ, Park J, Alonso-Mori R, Fuller FD, Batyuk A, Brewster AS, Bergmann U, Sauter NK, Orville AM, Yachandra VK, Yano J, Lipscomb JD, Kern J, Högbom M. High-Resolution XFEL Structure of the Soluble Methane Monooxygenase Hydroxylase Complex with its Regulatory Component at Ambient Temperature in Two Oxidation States. J Am Chem Soc 2020; 142:14249-14266. [PMID: 32683863 DOI: 10.1021/jacs.0c05613] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Soluble methane monooxygenase (sMMO) is a multicomponent metalloenzyme that catalyzes the conversion of methane to methanol at ambient temperature using a nonheme, oxygen-bridged dinuclear iron cluster in the active site. Structural changes in the hydroxylase component (sMMOH) containing the diiron cluster caused by complex formation with a regulatory component (MMOB) and by iron reduction are important for the regulation of O2 activation and substrate hydroxylation. Structural studies of metalloenzymes using traditional synchrotron-based X-ray crystallography are often complicated by partial X-ray-induced photoreduction of the metal center, thereby obviating determination of the structure of the enzyme in pure oxidation states. Here, microcrystals of the sMMOH:MMOB complex from Methylosinus trichosporium OB3b were serially exposed to X-ray free electron laser (XFEL) pulses, where the ≤35 fs duration of exposure of an individual crystal yields diffraction data before photoreduction-induced structural changes can manifest. Merging diffraction patterns obtained from thousands of crystals generates radiation damage-free, 1.95 Å resolution crystal structures for the fully oxidized and fully reduced states of the sMMOH:MMOB complex for the first time. The results provide new insight into the manner by which the diiron cluster and the active site environment are reorganized by the regulatory protein component in order to enhance the steps of oxygen activation and methane oxidation. This study also emphasizes the value of XFEL and serial femtosecond crystallography (SFX) methods for investigating the structures of metalloenzymes with radiation sensitive metal active sites.
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Affiliation(s)
- Vivek Srinivas
- Department of Biochemistry and Biophysics, Stockholm University, Arrhenius Laboratories for Natural Sciences, Stockholm 106 91, Sweden
| | - Rahul Banerjee
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, Minnesota 55391, United States
| | - Hugo Lebrette
- Department of Biochemistry and Biophysics, Stockholm University, Arrhenius Laboratories for Natural Sciences, Stockholm 106 91, Sweden
| | - Jason C Jones
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, Minnesota 55391, United States
| | - Oskar Aurelius
- Department of Biochemistry and Biophysics, Stockholm University, Arrhenius Laboratories for Natural Sciences, Stockholm 106 91, Sweden
| | - In-Sik Kim
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Cindy C Pham
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Sheraz Gul
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Kyle D Sutherlin
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Asmit Bhowmick
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Juliane John
- Department of Biochemistry and Biophysics, Stockholm University, Arrhenius Laboratories for Natural Sciences, Stockholm 106 91, Sweden
| | - Esra Bozkurt
- Department of Biochemistry and Biophysics, Stockholm University, Arrhenius Laboratories for Natural Sciences, Stockholm 106 91, Sweden
| | - Thomas Fransson
- Interdisciplinary Center for Scientific Computing, University of Heidelberg, 69120 Heidelberg, Germany
| | - Pierre Aller
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, United Kingdom
| | - Agata Butryn
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, United Kingdom
| | - Isabel Bogacz
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Philipp Simon
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Stephen Keable
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Alexander Britz
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Kensuke Tono
- Japan Synchrotron Radiation Research Institute, Sayo-gun 679 5198, Japan
| | - Kyung Sook Kim
- Pohang Accelerator Laboratory, Gyeongsangbuk-do 37673, South Korea
| | - Sang-Youn Park
- Pohang Accelerator Laboratory, Gyeongsangbuk-do 37673, South Korea
| | - Sang Jae Lee
- Pohang Accelerator Laboratory, Gyeongsangbuk-do 37673, South Korea
| | - Jaehyun Park
- Pohang Accelerator Laboratory, Gyeongsangbuk-do 37673, South Korea
| | - Roberto Alonso-Mori
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Franklin D Fuller
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Alexander Batyuk
- LCLS, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Aaron S Brewster
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Uwe Bergmann
- Stanford PULSE Institute, SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
| | - Nicholas K Sauter
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Allen M Orville
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, United Kingdom.,Research Complex at Harwell, Rutherford Appleton Laboratory, Didcot, Oxfordshire OX11 0FA, United Kingdom
| | - Vittal K Yachandra
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Junko Yano
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - John D Lipscomb
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, Minnesota 55391, United States
| | - Jan Kern
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Martin Högbom
- Department of Biochemistry and Biophysics, Stockholm University, Arrhenius Laboratories for Natural Sciences, Stockholm 106 91, Sweden
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25
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Jang H, Kim HD, Kim M, Park SH, Kwon S, Lee JY, Park SY, Park G, Kim S, Hyun H, Hwang S, Lee CS, Lim CY, Gang W, Kim M, Heo S, Kim J, Jung G, Kim S, Park J, Kim J, Shin H, Park J, Koo TY, Shin HJ, Heo H, Kim C, Min CK, Han JH, Kang HS, Lee HS, Kim KS, Eom I, Rah S. Time-resolved resonant elastic soft x-ray scattering at Pohang Accelerator Laboratory X-ray Free Electron Laser. Rev Sci Instrum 2020; 91:083904. [PMID: 32872965 DOI: 10.1063/5.0016414] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Resonant elastic x-ray scattering has been widely employed for exploring complex electronic ordering phenomena, such as charge, spin, and orbital order, in particular, in strongly correlated electronic systems. In addition, recent developments in pump-probe x-ray scattering allow us to expand the investigation of the temporal dynamics of such orders. Here, we introduce a new time-resolved Resonant Soft X-ray Scattering (tr-RSXS) endstation developed at the Pohang Accelerator Laboratory X-ray Free Electron Laser (PAL-XFEL). This endstation has an optical laser (wavelength of 800 nm plus harmonics) as the pump source. Based on the commissioning results, the tr-RSXS at PAL-XFEL can deliver a soft x-ray probe (400 eV-1300 eV) with a time resolution of ∼100 fs without jitter correction. As an example, the temporal dynamics of a charge density wave on a high-temperature cuprate superconductor is demonstrated.
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Affiliation(s)
- Hoyoung Jang
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, South Korea
| | - Hyeong-Do Kim
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, South Korea
| | - Minseok Kim
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, South Korea
| | - Sang Han Park
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, South Korea
| | - Soonnam Kwon
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, South Korea
| | - Ju Yeop Lee
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, South Korea
| | - Sang-Youn Park
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, South Korea
| | - Gisu Park
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, South Korea
| | - Seonghan Kim
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, South Korea
| | - HyoJung Hyun
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, South Korea
| | - Sunmin Hwang
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, South Korea
| | - Chae-Soon Lee
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, South Korea
| | - Chae-Yong Lim
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, South Korea
| | - Wonup Gang
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, South Korea
| | - Myeongjin Kim
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, South Korea
| | - Seongbeom Heo
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, South Korea
| | - Jinhong Kim
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, South Korea
| | - Gigun Jung
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, South Korea
| | - Seungnam Kim
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, South Korea
| | - Jaeku Park
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, South Korea
| | - Jihwa Kim
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, South Korea
| | - Hocheol Shin
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, South Korea
| | - Jaehun Park
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, South Korea
| | - Tae-Yeong Koo
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, South Korea
| | - Hyun-Joon Shin
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, South Korea
| | - Hoon Heo
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, South Korea
| | - Changbum Kim
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, South Korea
| | - Changi-Ki Min
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, South Korea
| | - Jang-Hui Han
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, South Korea
| | - Heung-Sik Kang
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, South Korea
| | - Heung-Soo Lee
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, South Korea
| | - Kyung Sook Kim
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, South Korea
| | - Intae Eom
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, South Korea
| | - Seungyu Rah
- PAL-XFEL, Pohang Accelerator Laboratory, Pohang, Gyeongbuk 37673, South Korea
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26
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Abstract
Lower cellular elasticity is a distinguishing feature of cancer cells compared with normal cells. To determine whether cellular elasticity differs based on cancer cell type, cells were selected from three different cancer types including breast, cervix, and lung. For each cancer type, one counterpart normal cell and three types of cancer cells were selected, and their elasticity was measured using atomic force microscopy (AFM). The elasticity of normal cells was in the order of MCF10A > WI-38 ≥ Ect1/E6E7 which corresponds to the counterpart normal breast, lung, and cervical cancer cells, respectively. All cancer cells exhibited lower elasticity than their counterpart normal cells. Compared with the counterpart normal cells, the difference in cellular elasticity was the greatest in cervical cancer cells, followed by lung and breast cancer cells. This result indicates lower elasticity is a unique property of cancer cells; however, the reduction in elasticity may depend on the histological origin of the cells. The F-actin cytoskeleton of cancer cells was different in structure and content from normal cells. The F-actin is mainly distributed at the periphery of cancer cells and its content was mostly lower than that seen in normal cells.
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Affiliation(s)
- Sangwoo Kwon
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul 130-710, Republic of Korea
| | - Woochul Yang
- Department of Physics, Dongguk University, Seoul 04620, Republic of Korea
| | - Donggerami Moon
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul 130-710, Republic of Korea
| | - Kyung Sook Kim
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul 130-710, Republic of Korea
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27
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Han SJ, Moon D, Park MY, Kwon S, Noh M, Jang J, Lee JB, Kim KS. Electric field-induced changes in biomechanical properties in human dermal fibroblasts and a human skin equivalent. Skin Res Technol 2020; 26:914-922. [PMID: 32594564 DOI: 10.1111/srt.12894] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 05/30/2020] [Indexed: 12/01/2022]
Abstract
PURPOSE An electric field (EF) can be used to change the mechanical properties of cells and skin tissues. We demonstrate EF-induced elasticity changes in human dermal fibroblasts (HDFs) and a human skin equivalent and identify the underlying principles related to the changes. METHODS HDFs and human skin equivalent were stimulated with electric fields of 1.0 V/cm. Change in cellular elasticity was determined by using atomic force microscopy. Effects of EF on the biomechanical and chemical properties of a human skin equivalent were analyzed. In cells and tissues, the effects of EF on biomarkers of cellular elasticity were investigated at the gene and protein levels. RESULTS In HDFs, the cellular elasticity was increased and the expression of biomarkers of cellular elasticity was regulated by the EF. Expression of the collagen protein in the human skin equivalent was changed by EF stimulation; however, changes in density and microstructure of the collagen fibrils were not significant. The viscoelasticity of the human skin equivalent increased in response to EF stimulation, but molecular changes were not observed in collagen. CONCLUSIONS Elasticity of cells and human skin equivalent can be regulated by electrical stimulation. Especially, the change in cellular elasticity was dependent on cell age.
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Affiliation(s)
- Se Jik Han
- Department of Biomedical Engineering, Graduate school, Kyung Hee University, Seoul, South Korea.,Department of Biomedical Engineering, College of medicine, Kyung Hee University, Seoul, South Korea
| | - Donggerami Moon
- Department of Biomedical Engineering, College of medicine, Kyung Hee University, Seoul, South Korea
| | - Moon Young Park
- Department of Biomedical Engineering, College of medicine, Kyung Hee University, Seoul, South Korea
| | - Sangwoo Kwon
- Department of Biomedical Engineering, College of medicine, Kyung Hee University, Seoul, South Korea
| | - Minjoo Noh
- Department of Innovation, Innovation Lab, Cosmax R&I Center, Gyeonggi-do, South Korea
| | - Jihui Jang
- Department of Innovation, Innovation Lab, Cosmax R&I Center, Gyeonggi-do, South Korea
| | - Jun Bae Lee
- Department of Innovation, Innovation Lab, Cosmax R&I Center, Gyeonggi-do, South Korea
| | - Kyung Sook Kim
- Department of Biomedical Engineering, College of medicine, Kyung Hee University, Seoul, South Korea
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28
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Abstract
Background Because cell movement is primarily driven by the connection between F-actin and integrin through a physical linkage, cellular elasticity and adhesion strength have been considered as biomarkers of cell motility. However, a consistent set of biomarkers that indicate the potential for cell motility is still lacking. Methods In this work, we characterize a phenotype of cell migration in terms of cellular elasticity and adhesion strength, which reveals the interdependence of subcellular systems that mediate optimal cell migration. Results Stiff cells weakly adhered to the substrate revealed superior motility, while soft cell migration with strong adhesion was relatively inhibited. The spatial distribution and amount of F-actin and integrin were highly variable depending on cell type, but their density exhibited linear correlations with cellular elasticity and adhesion strength, respectively. Conclusions The densities of F-actin and integrin exhibited linear correlations with cellular elasticity and adhesion strength, respectively, therefore, they can be considered as biomarkers to quantify cell migration characteristics.
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Affiliation(s)
- Sangwoo Kwon
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, 1 Hoegi-dong, Dongdaemun-gu, Seoul, 04620 Republic of Korea
| | - Woochul Yang
- Department of Physics, Dongguk University, Seoul, 100-715 Republic of Korea
| | - Donggerami Moon
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, 1 Hoegi-dong, Dongdaemun-gu, Seoul, 04620 Republic of Korea
| | - Kyung Sook Kim
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, 1 Hoegi-dong, Dongdaemun-gu, Seoul, 04620 Republic of Korea
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Lee JW, Choi HJ, Kim EJ, Hwang WY, Jung MH, Kim KS. Fisetin induces apoptosis in uterine leiomyomas through multiple pathways. Sci Rep 2020; 10:7993. [PMID: 32409692 PMCID: PMC7224361 DOI: 10.1038/s41598-020-64871-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 04/20/2020] [Indexed: 01/20/2023] Open
Abstract
Although uterine leiomyomas are the most common benign uterine tumors in women, there is no effective therapy that can also preserve the uterus and maintain fertility. The work aimed to work was to discover a potential natural agent that has pharmacological activities on uterine leiomyomas with fewer adverse effects. We chose Rhus verniciflua Stokes (RVS) as a candidate after primary cytotoxicity testing, and analyzed the RVS components that showed pharmacological activity. Leiomyoma cells and myometrium cells were cultured from uterine tissues obtained from patients, and were treated with RVS at varying concentrations. RVS was cytotoxic in both leiomyoma and myometrium cells; however, the effects were more prominent in the leiomyoma cells. Among the bioactive components of RVS, fisetin showed significant pharmacological effects on leiomyoma cells. Fisetin showed excellent leiomyoma cell cytotoxicity and induced apoptotic cell death with cell cycle arrest. The apoptotic cell death appeared to involve not one specific pathway but multichannel pathways (intrinsic, extrinsic, MARK, and p53-mediated pathways), and autophagy. The multichannel apoptosis pathways were activated with a low concentration of fisetin (<IC20) and were more vigorously activated at high concentrations (>IC50). This is the first demonstration to show the pharmacological activities of fisetin on leiomyoma cells. These findings suggest that fisetin may be used for the prevention and treatment of uterine leiomyomas. Since fisetin can be obtained from plants, it may be a safe and effective alternative treatment for uterine leiomyomas.
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Affiliation(s)
- Jin-Woo Lee
- Medical Science Research Institute, Kyung Hee University Medical Center, Seoul, 02447, Korea
| | - Hyuck Jai Choi
- East-West Medical Research Institute, Kyung Hee University Medical Center, Seoul, 02447, Korea
| | - Eun-Jin Kim
- East-West Medical Research Institute, Kyung Hee University Medical Center, Seoul, 02447, Korea
| | - Woo Yeon Hwang
- Department of Obstetrics & Gynecology, School of Medicine, Kyung Hee University, Kyung Hee University Medical Center, Seoul, 02447, Korea
| | - Min-Hyung Jung
- Department of Obstetrics & Gynecology, School of Medicine, Kyung Hee University, Kyung Hee University Medical Center, Seoul, 02447, Korea.
| | - Kyung Sook Kim
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul, 02447, Korea.
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Kwon S, Kim KS. Qualitative analysis of contribution of intracellular skeletal changes to cellular elasticity. Cell Mol Life Sci 2020; 77:1345-1355. [PMID: 31605149 DOI: 10.1007/s00018-019-03328-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 09/25/2019] [Accepted: 09/30/2019] [Indexed: 01/07/2023]
Abstract
Cells are dynamic structures that continually generate and sustain mechanical forces within their environments. Cells respond to mechanical forces by changing their shape, moving, and differentiating. These reactions are caused by intracellular skeletal changes, which induce changes in cellular mechanical properties such as stiffness, elasticity, viscoelasticity, and adhesiveness. Interdisciplinary research combining molecular biology with physics and mechanical engineering has been conducted to characterize cellular mechanical properties and understand the fundamental mechanisms of mechanotransduction. In this review, we focus on the role of cytoskeletal proteins in cellular mechanics. The specific role of each cytoskeletal protein, including actin, intermediate filaments, and microtubules, on cellular elasticity is summarized along with the effects of interactions between the fibers.
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Affiliation(s)
- Sangwoo Kwon
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, 1 Hoegi-dong, Dongdaemun-gu, Seoul, 02447, Republic of Korea
| | - Kyung Sook Kim
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, 1 Hoegi-dong, Dongdaemun-gu, Seoul, 02447, Republic of Korea.
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Lee H, Shin J, Cho DH, Jung C, Sung D, Ahn K, Nam D, Kim S, Kim KS, Park SY, Fan J, Jiang H, Kang HC, Tono K, Yabashi M, Ishikawa T, Noh DY, Song C. Characterizing the intrinsic properties of individual XFEL pulses via single-particle diffraction. J Synchrotron Radiat 2020; 27:17-24. [PMID: 31868731 DOI: 10.1107/s1600577519015443] [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: 04/14/2019] [Accepted: 11/15/2019] [Indexed: 06/10/2023]
Abstract
With each single X-ray pulse having its own characteristics, understanding the individual property of each X-ray free-electron laser (XFEL) pulse is essential for its applications in probing and manipulating specimens as well as in diagnosing the lasing performance. Intensive research using XFEL radiation over the last several years has introduced techniques to characterize the femtosecond XFEL pulses, but a simple characterization scheme, while not requiring ad hoc assumptions, to address multiple aspects of XFEL radiation via a single data collection process is scant. Here, it is shown that single-particle diffraction patterns collected using single XFEL pulses can provide information about the incident photon flux and coherence property simultaneously, and the X-ray beam profile is inferred. The proposed scheme is highly adaptable to most experimental configurations, and will become an essential approach to understanding single X-ray pulses.
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Affiliation(s)
- Heemin Lee
- Department of Physics, Pohang University of Science and Technology, Pohang 37673, South Korea
| | - Jaeyong Shin
- Department of Physics, Pohang University of Science and Technology, Pohang 37673, South Korea
| | - Do Hyung Cho
- Department of Physics, Pohang University of Science and Technology, Pohang 37673, South Korea
| | - Chulho Jung
- Department of Physics, Pohang University of Science and Technology, Pohang 37673, South Korea
| | - Daeho Sung
- Department of Physics, Pohang University of Science and Technology, Pohang 37673, South Korea
| | - Kangwoo Ahn
- Department of Physics and Photon Science, Gwangju Institute of Science and Technology, Gwangju 61005, South Korea
| | - Daewoong Nam
- PAL-XFEL Beamline Division, Pohang Accelerator Laboratory, Pohang 37673, South Korea
| | - Sangsoo Kim
- PAL-XFEL Beamline Division, Pohang Accelerator Laboratory, Pohang 37673, South Korea
| | - Kyung Sook Kim
- PAL-XFEL Beamline Division, Pohang Accelerator Laboratory, Pohang 37673, South Korea
| | - Sang Yeon Park
- PAL-XFEL Beamline Division, Pohang Accelerator Laboratory, Pohang 37673, South Korea
| | - Jiadong Fan
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, People's Republic of China
| | - Huaidong Jiang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, People's Republic of China
| | - Hyun Chol Kang
- Department of Materials Science and Engineering, Chosun University, Gwangju 61452, South Korea
| | - Kensuke Tono
- Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo, Hyogo 679-5198, Japan
| | - Makina Yabashi
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo, Hyogo 679-5148, Japan
| | | | - Do Young Noh
- Department of Physics and Photon Science, Gwangju Institute of Science and Technology, Gwangju 61005, South Korea
| | - Changyong Song
- Department of Physics, Pohang University of Science and Technology, Pohang 37673, South Korea
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Jeon J, Kwon H, Cho E, Kim KS, Yun J, Lee YC, Kim DH. The effect of coniferaldehyde on neurite outgrowth in neuroblastoma Neuro2a cells. Neurochem Int 2019; 131:104579. [PMID: 31614166 DOI: 10.1016/j.neuint.2019.104579] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 10/10/2019] [Accepted: 10/11/2019] [Indexed: 11/26/2022]
Abstract
Neurite outgrowth is the differentiation process by which neurons establish synapses. In the dentate gyrus of the hippocampus, new neurons are constantly produced and undergo neurite outgrowth to form synapses, and this process is involved in cognitive ability. Therefore, if an agent could modulate neurite outgrowth, it could potentially be developed as a compound for modulating cognitive ability. In this study, we examined whether coniferaldehyde, a natural compound, regulates neurite outgrowth in Neuro2a cells. We ascertained morphological changes and measured the percentage of neurite-bearing cells and neurite lengths. Coniferaldehyde significantly increased the percentage of neurite-bearing cells, and the length of neurites in a concentration-dependent manner, without inducing cell death. We then have identified that, coniferaldehyde activates the extracellular signals-regulated Kinase 1 and 2 (ERK1/2), and further noted that, U0126, an ERK1/2 inhibitor, blocks coniferaldehyde-facilitated neurite outgrowth. Moreover, Subchronic administration of CA enhanced learning and memory, and increased neurite length of newborn neurons in the hippocampus. These results suggest that coniferaldehyde induces neurite outgrowth by a process possibly mediated by ERK1/2 signaling and enhances learning and memory.
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Affiliation(s)
- Jieun Jeon
- Department of Medicinal Biotechnology, College of Health Sciences, Dong-A University, Busan, 49315, Republic of Korea
| | - Huiyoung Kwon
- Department of Medicinal Biotechnology, College of Health Sciences, Dong-A University, Busan, 49315, Republic of Korea
| | - Eunbi Cho
- Department of Medicinal Biotechnology, College of Health Sciences, Dong-A University, Busan, 49315, Republic of Korea
| | - Kyung Sook Kim
- Department of Medicinal Biotechnology, College of Health Sciences, Dong-A University, Busan, 49315, Republic of Korea
| | - Jeanho Yun
- Department of Biochemistry, College of Medicine, Dong-A University, Busan, 49201, Republic of Korea; Institute of Convergence Bio-Health, Dong-A University, Busan, 49315, Republic of Korea
| | - Young Choon Lee
- Department of Medicinal Biotechnology, College of Health Sciences, Dong-A University, Busan, 49315, Republic of Korea; Institute of Convergence Bio-Health, Dong-A University, Busan, 49315, Republic of Korea
| | - Dong Hyun Kim
- Department of Medicinal Biotechnology, College of Health Sciences, Dong-A University, Busan, 49315, Republic of Korea; Institute of Convergence Bio-Health, Dong-A University, Busan, 49315, Republic of Korea.
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Lee Y, Park HC, Shin JH, Lim YH, Park JK, Shin J, Kim KS, Kim BK. P5298Influence of the changes in body fat on all-cause and cardiovascular mortality in a general population: a report from Ansan-Ansung cohort in the Korean genome environment study. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0269] [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
Paradoxical beneficial effects of obesity on all-cause and cardiovascular mortality have been reported in multiple cohort studies based on patients with cardiovascular disease as well as general populations. However, the association between the presence of obesity at baseline and the better survival rates could not be directly interpreted into the beneficial effect of gain in obesity or fatness on the mortality, which makes it difficult to provide any recommendation for the management of obesity. Therefore, we investigated the influence of the changes in body fat on all-cause and cardiovascular mortality in a general population.
Methods
A population-based cohort study has been conducted for 12 years (from 2001 to 2012). A total of 5,259 subjects in whom body compositions using a bio-impedance method were measured at least 2 times during the observational period were included. The causes of death was identified from the nation-wide database in KOSTAT. I20-I82 and R99 in the International Classification of Disease-10 codes were defined as a cardiovascular death. The subjects were evenly divided into 3 groups by the percentages of the changes in body fat (Δ%BF; decreased [Δ%BF <0.0%] vs. increased [Δ%BF 0.0–13.7%] vs. highly increased [Δ%BF ≥13.7%]). Inverse probability of treatment weighting was applied to balance the covariate differences among the groups.
Results
The age was 51.2±8.5 years and 51.6% was male. Median observation duration was 163 (the interquartile range: 157–168) months. The all-cause death and cardiovascular death occurred most frequently in the decreased Δ%BF group and least frequent in the highly increased Δ%BF group in both unweighted and weighted cohort. Multivariate Cox proportional hazard models showed that the risk of all-cause death was lower in the increased and highly increased Δ%BF groups (hazard ratio [HR] 0.61 [0.47–0.80] and 0.24 [0.17–0.34], respectively) and the risk of cardiovascular death was lower in the highly increased Δ%BF group (HR 0.20 [0.08–0.48]), compared to those in the decreased Δ%BF group after adjustment for all covariates including physical activities and the changes in muscle mass. The risk of all-cause death and cardiovascular death linearly decreased with increasing Δ%BF (HR 0.72 [0.67–0.77] and 0.70 [0.60–0.82], respectively).
Conclusion
The increase in body fat is associated with a lower risk of all-cause death and cardiovascular death in a middle-age general population, independently with physical activities and the changes in muscle mass.
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Affiliation(s)
- Y Lee
- Hanyang University Kuri Hospital, Department of cardiology, Guri, Korea (Republic of)
| | - H C Park
- Hanyang University Kuri Hospital, Department of cardiology, Guri, Korea (Republic of)
| | - J H Shin
- Hanyang University Kuri Hospital, Department of cardiology, Guri, Korea (Republic of)
| | - Y H Lim
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - J K Park
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - J Shin
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - K S Kim
- Hanyang University, Division of Cardiology, Department of internal medicine, Seoul, Korea (Republic of)
| | - B K Kim
- Sung Ae Hospital, Department of Cardiology, Seoul, Korea (Republic of)
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Han JH, Lee JP, Lee JS, Song SH, Kim KS. Fate of the micropenis and constitutional small penis: do they grow to normalcy in puberty? J Pediatr Urol 2019; 15:526.e1-526.e6. [PMID: 31447312 DOI: 10.1016/j.jpurol.2019.07.009] [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] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 07/11/2019] [Indexed: 10/26/2022]
Abstract
INTRODUCTION Penile length is an important indicator of male sexual development. Scarce data were reported on penile length measurements in children comparing changes between prepuberty and puberty for the small penile issue with long-term follow-up. OBJECTIVE The purpose of this study was to investigate the possibility of catch-up growth of the penile length of boys with a small penis in the long-term follow-up. STUDY DESIGN From April 2001 to December 2016, 27 boys who visited the outpatient clinic owing to a small penis, without any chromosomal anomalies and other genital disorder, were investigated retrospectively. Micropenis is defined as 2.5 standard deviations less than the mean stretched penile length (SPL) of age. Periodic penile length, testicular volume, hormonal levels (serum testosterone, luteinizing hormone (LH), and follicle-stimulating hormone (FSH)), and bone age were measured. Pubertal development was recorded by using the Tanner scale. The effect of hormonal therapy and the factors attributable to the increment of the penile length were evaluated. RESULTS The mean age at the first visit was 9.8 years (5-12 years) and that at puberty was 12.6 years (10-16 years). The length of the penis at the initial visit was 4.0 ± 0.8 cm (2.5-6.0) and at puberty, 7.3 ± 1.8 cm (4.0-12.0). Nine patients diagnosed with micropenis no longer had a micropenis in puberty. The less the age-matched SPL, the more the increment of SPL that was observed (rho = - 0.548, P = 0.003). The mean increment of SPL in the hormonal therapy group (11 boys) and the non-hormonal therapy group (16 boys) was not statistically different (43.5 ± 22. 9% vs 41.5 ± 21.6%, respectively, P = 0.497). DISCUSSION This study explains how much the growth of a small penis catches up in puberty. From the point of view of the increment of SPL, the increment was higher in boys who belonged to the smaller penis group. Hormonal therapy does not attribute to an increase in the length after long-term follow-up. Limitations of this study were its retrospective origin with a small number of patients in a single center. CONCLUSION Catch-up growth of the small penis at puberty was accomplished in most children with a small penis before puberty. Hormonal treatment was not significantly correlated with the penile length increment in the long-term follow-up.
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Affiliation(s)
- J H Han
- Department of Urology, Asan Medical Center, University of Ulsan College of Medicine, Songpa-gu, Seoul 50555, South Korea
| | - J P Lee
- Department of Urology, Asan Medical Center, University of Ulsan College of Medicine, Songpa-gu, Seoul 50555, South Korea
| | - J S Lee
- Department of Urology, Asan Medical Center, University of Ulsan College of Medicine, Songpa-gu, Seoul 50555, South Korea
| | - S H Song
- Department of Urology, Asan Medical Center, University of Ulsan College of Medicine, Songpa-gu, Seoul 50555, South Korea
| | - K S Kim
- Department of Urology, Asan Medical Center, University of Ulsan College of Medicine, Songpa-gu, Seoul 50555, South Korea.
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Kim YI, Kim KS, Ahn HJ, Kang IH, Shin MK. Reduced matrix metalloproteinase and collagen transcription mediated by the TGF-β/Smad pathway in passaged normal human dermal fibroblasts. J Cosmet Dermatol 2019; 19:1211-1218. [PMID: 31509335 DOI: 10.1111/jocd.13114] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [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: 02/10/2019] [Revised: 07/24/2019] [Accepted: 08/01/2019] [Indexed: 12/01/2022]
Abstract
BACKGROUND Transforming growth factor-β (TGF-β) is a major regulator of extracellular matrix (ECM) events, particularly collagen production. AIM We explored whether the expression of matrix metalloproteinases (MMPs) and collagen are transcriptionally regulated by the TGF-β and Smad signaling pathways, and the roles played by NF-κB and mitogen-activated protein kinase (MAPK) signaling in normal, aged, human dermal fibroblasts. METHODS We quantified mRNA and protein expression using real-time PCR and immunoblotting of proteins from cells in passage 5-15. RESULTS The levels of mRNAs encoding TGF-β1, TGF-β3, and TGF-β receptor type I (TGFβ RI) decreased with increasing passage number. The levels of mRNAs encoding TGF-β2, TGFβ RII, and TGFβ RIII increased to passage 10 but decreased by passage 15. The levels of mRNAs encoding Smad-2, -3, -4, and -7 decreased with increasing passage number. The level of mRNA encoding MMP-1 increased with increasing passage number, and the levels of mRNAs encoding MMP-2, TIMP-1, and TIMP-2 increased to passage 10 but decreased by passage 15. The levels of mRNAs encoding collagen types I and II decreased with increasing passage number. At the protein level, NF-κB, IκBα, p38, ERK, Akt, and JNK became increasingly phosphorylated at higher passage numbers. CONCLUSION Our results suggest that reductions in the expression levels of MMPs and collagen types I and III in aging human dermal fibroblasts reflect reduced expression of TGF-β/Smad and TGF-β receptors, thus compromising the TGF-β receptor-binding capacity of fibroblasts; the NF-κB and Akt-JNK/MAPK signaling pathways may play active roles in this process.
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Affiliation(s)
- Young Il Kim
- Medical Science Research Institute, Kyung Hee University Medical Center, Seoul, Korea
| | - Kyung Sook Kim
- Department of Biomedical Engineering, School of Medicine, Kyung Hee University, Seoul, Korea
| | - Hye-Jin Ahn
- Department of Dermatology, School of Medicine, Kyung Hee University, Seoul, Korea
| | - In-Hye Kang
- Department of Dermatology, School of Medicine, Kyung Hee University, Seoul, Korea
| | - Min Kyung Shin
- Department of Dermatology, School of Medicine, Kyung Hee University, Seoul, Korea
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Park MY, Han SJ, Moon D, Kwon S, Lee JW, Kim KS. Effects of red ginseng on the elastic properties of human skin. J Ginseng Res 2019; 44:738-746. [PMID: 32913403 PMCID: PMC7471210 DOI: 10.1016/j.jgr.2019.08.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 08/09/2019] [Accepted: 08/14/2019] [Indexed: 11/30/2022] Open
Abstract
Background Red ginseng contains components, including microelements, vitamins, essential oils, and fatty acids, that can be used in skincare to delay the aging process. We investigated the effects of red ginseng treatment on skin elasticity by assessing cellular stiffness and measuring collagen protein synthesis. Methods Human dermal fibroblasts were treated with red ginseng, and the resulting changes in stiffness were investigated using atomic force microscopy. Cytoskeletal changes and mRNA expression of biomarkers of aging, including that of procollagens I and VII, elastin, and fibrillin-1, were investigated. Collagen in a human skin equivalent treated with red ginseng was visualized via hematoxylin and eosin staining, scanning electron microscopy, and atomic force microscopy. Results and conclusion The stiffness of fibroblasts was significantly reduced by treatment with red ginseng concentrations of ≥ 0.8 mg/mL. The ratio of F-actin to G-actin decreased after treatment, which corresponded to a change in fibroblast stiffness. The storage modulus (G′) and loss modulus (G″) of the skin equivalent were both lowered by red ginseng treatment. This result indicates that the viscoelasticity of the skin equivalent can be restored by red ginseng treatment.
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Affiliation(s)
- Moon Young Park
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Se Jik Han
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul, Republic of Korea.,Department of Medical Engineering, Graduate school, Kyung Hee University, Seoul, Republic of Korea
| | - Donggerami Moon
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Sangwoo Kwon
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Jin-Woo Lee
- Medical Science Research Institute, Kyung Hee University Medical Center, Seoul, Republic of Korea
| | - Kyung Sook Kim
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul, Republic of Korea
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Nam HY, Kim KS, Lee JH. Population genetic structure and putative migration pathway of Sogatella furcifera (Horváth) (Hemiptera, Delphacidae) in Asia. Bull Entomol Res 2019; 109:453-462. [PMID: 30301481 DOI: 10.1017/s0007485318000755] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The white-backed planthopper, Sogatella furcifera (Horváth) (Hemiptera, Delphacidae), has emerged as a serious rice pest in Asia. In the present study, 12 microsatellite markers were employed to investigate the genetic structure, diversity and migration route of 43 populations sampled from seven Asian countries (Bangladesh, China, Korea, Laos, Nepal, Thailand, and Vietnam). According to the isolation by distance analysis, a significant positive correlation was observed between genetic and geographic distances by the Mantel test (r2 = 0.4585, P = 0.01), indicating the role of geographic isolation in the genetic structure of S. furcifera. A population assignment test using the first-generation migrants detection method (thresholds a = 0.01) revealed southern China and northern Vietnam as the main sources of S. furcifera in Korea. Nepal and Bangladesh might be additional potential sources via interconnection with Vietnam populations. This paper provides useful data for the migration route and origin of S. furcifera in Korea and will contribute to planthopper resistance management.
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Affiliation(s)
- H Y Nam
- Entomology Program, Department of Agricultural Biotechnology, Seoul National University, Seoul 08826, Republic Korea
| | - K S Kim
- Iowa State University, Department of Natural Resource Ecology and Management, Ames, IA, 50011, USA
| | - J-H Lee
- Entomology Program, Department of Agricultural Biotechnology, Seoul National University, Seoul 08826, Republic Korea
- Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul 08826, Republic of Korea
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Park NC, Han SJ, Lee JW, Choi HJ, Kim EJ, Jung MH, Jang JB, Hwang DS, Kim KS. Apoptotic effect of Gyejibokryunghwan on uterine sarcoma cells (SK-UT-1B). Phytomedicine 2019; 61:152806. [PMID: 31035046 DOI: 10.1016/j.phymed.2018.12.029] [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: 05/14/2018] [Revised: 12/18/2018] [Accepted: 12/23/2018] [Indexed: 06/09/2023]
Abstract
BACKGROUND Diagnosis of uterine sarcomais is a challenging task for clinicians because its position is not easily accessible by current conventional techniques. In addition, standardized treatment for uterine sarcoma has not yet been established due to its rarity and heterogeneity. HYPOTHESIS/PURPOSE We investigated the apoptotic cell death of uterine sarcoma cells (SK-UT-1B) induced by Gyejibokryunghwan (GBH). GBH, an herbal medicine, has been widely used for gynecological diseases in Koean medicine. METHODS SK-UT-1B cells were treated with GBH of varying concentrations from 0 to 500 µg/ml. The mechanism of cell death was investigated through multiple analysis methods, including flow cytometry, cell cycle, and western blotting. RESULTS Flow cytometric analysis revealed that the number of apoptotic cells increased in a GBH dose-dependent manner. The cell populations of sub-G1 and G0/G1 phases were increased by GBH treatment, indicating apoptosisand cell arrest, while the population of S and G2/M phases decreased. With GBH, the expression levels of cleaved caspase-3, -6, and -9 were upregulated, while the expression levels of pro-caspase-3, -6, and -9 were down-regulated in SK-UT-1B cells. CONCLUSION These results are the first observation of uterine sarcoma cell death induced by GBH and confirmation of the mechanism of cell death, which occurred through the intrinsic apoptotic pathway. Clinically, uterine sarcoma has a poor prognosis with no appropriate treatment. GBH may become a new treatment modality for uterine sarcoma.
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Affiliation(s)
- Nam Chun Park
- Department of Clinical Korean Medicine, Graduate School, Kyung Hee University, Seoul 02447, Korea
| | - Se Jik Han
- Department of Medical Engineering, Graduate school, Kyung HeeUniversity, Seoul 02447, Korea; Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul 02447, Korea
| | - Jin-Woo Lee
- Medical Science Research Institute, Kyung Hee University Medical Center, Seoul 02447, Korea
| | - Hyuck Jai Choi
- East-West Medical Research Institute, Kyung Hee University Medical Center, Seoul 02447, Korea
| | - Eun-Jin Kim
- East-West Medical Research Institute, Kyung Hee University Medical Center, Seoul 02447, Korea
| | - Min-Hyung Jung
- Department of Obstetrics & Gynecology, School of Medicine, Kyung Hee University, Kyung Hee Medical Center, Seoul 02447, Korea
| | - Jun-Bock Jang
- Department of Clinical Korean Medicine, Graduate School, Kyung Hee University, Seoul 02447, Korea; Department of Obstetrics & Gynecology, College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Deok-Sang Hwang
- Department of Clinical Korean Medicine, Graduate School, Kyung Hee University, Seoul 02447, Korea; East-West Medical Research Institute, Kyung Hee University Medical Center, Seoul 02447, Korea; Department of Obstetrics & Gynecology, College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea.
| | - Kyung Sook Kim
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul 02447, Korea.
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Han JH, Park J, Myung SH, Lee SH, Kim HY, Kim KS, Seo YW, Kim TH. Noxa mitochondrial targeting domain induces necrosis via VDAC2 and mitochondrial catastrophe. Cell Death Dis 2019; 10:519. [PMID: 31285435 PMCID: PMC6614423 DOI: 10.1038/s41419-019-1753-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 06/07/2019] [Accepted: 06/21/2019] [Indexed: 11/09/2022]
Abstract
Noxa, a Bcl-2 homology 3 (BH3)-only protein of the Bcl-2 family, is responsive to cell stresses and triggers apoptosis by binding the prosurvival Bcl-2-like proteins Mcl1, BclXL, and Bcl2A1. Although the Noxa BH3 domain is necessary to induce apoptosis, the mitochondrial targeting domain (MTD) of Noxa functions as a pronecrotic domain, an inducer of mitochondrial fragmentation, and delivery to mitochondria. In this study, we demonstrate that the extended MTD (eMTD) peptide induces necrotic cell death by interaction with the VDAC2 protein. The eMTD peptide penetrates the cell membrane, causing cell membrane blebbing, cytosolic calcium influx, and mitochondrial swelling, fragmentation, and ROS generation. The MTD domain binds VDACs and opens the mitochondrial permeability transition pore (mPTP) in a CypD-independent manner. The opening of mPTP induced by eMTD is inhibited either by down-regulation of VDAC2 or by the VDACs inhibitor DIDS. These results indicate that the MTD domain of Noxa causes mitochondrial damage by opening mPTP through VDACs, especially VDAC2, during necrotic cell death.
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Affiliation(s)
- Ji-Hye Han
- Department of Biochemistry and Molecular Biology, Chosun University School of Medicine, 309 Pilmoon-Daero, Dong-Gu, Gwang-Ju, 61452, Korea
| | - Junghee Park
- Department of Biochemistry and Molecular Biology, Chosun University School of Medicine, 309 Pilmoon-Daero, Dong-Gu, Gwang-Ju, 61452, Korea
| | - Seung-Hyun Myung
- Department of Biochemistry and Molecular Biology, Chosun University School of Medicine, 309 Pilmoon-Daero, Dong-Gu, Gwang-Ju, 61452, Korea
| | - Sung Hang Lee
- Department of Molecular and Cellular Biology, Chosun University School of Medicine, 309 Pilmoon-Daero, Dong-Gu, Gwang-Ju, 61452, Korea
| | - Hwa-Young Kim
- Department of Biochemistry and Molecular Biology, Yeungnam University College of Medicine, Daegu, Korea
| | - Kyung Sook Kim
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul, Korea
| | - Young-Woo Seo
- Korea Basic Science Institute Gwang-Ju Center, Chonnam National University, 77, Yongbong-ro, Buk-gu, Gwang-ju, 61186, Korea.
| | - Tae-Hyoung Kim
- Department of Biochemistry and Molecular Biology, Chosun University School of Medicine, 309 Pilmoon-Daero, Dong-Gu, Gwang-Ju, 61452, Korea.
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Park C, Park J, Shim MK, Rhyu MR, Yoon BK, Kim KS, Lee Y. Indazole-Cl inhibits hypoxia-induced cyclooxygenase-2 expression in vascular smooth muscle cells. J Mol Endocrinol 2019; 63:27-38. [PMID: 31075756 DOI: 10.1530/jme-19-0018] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Accepted: 04/18/2019] [Indexed: 12/22/2022]
Abstract
Atherosclerosis is the most common root cause of arterial disease, such as coronary artery disease and carotid artery disease. Hypoxia is associated with the formation of macrophages and increased inflammation and is known to be present in lesions of atherosclerotic. Vascular smooth muscle cells (VSMCs) are one of the major components of blood vessels, and hypoxic conditions affect VSMC inflammation, proliferation and migration, which contribute to vascular stenosis and play a major role in the atherosclerotic process. Estrogen receptor (ER)-β is thought to play an important role in preventing the inflammatory response in VSMCs. In this report, we studied the anti-inflammatory effect of indazole (In)-Cl, an ERβ-specific agonist, under conditions of hypoxia. Expression of cyclooxygenase-2 reduced by hypoxia was inhibited by In-Cl treatment in VSMCs, and this effect was antagonized by an anti-estrogen compound. Additionally, the production of reactive oxygen species induced under conditions of hypoxia was reduced by treatment with In-Cl. Increased cell migration and invasion by hypoxia were also dramatically decreased following treatment with In-Cl. The increase in cell proliferation following treatment with platelet-derived growth factor was attenuated by In-Cl in VSMCs. RNA sequencing analysis was performed to identify changes in inflammation-related genes following In-Cl treatment in the hypoxic state. Our results suggest that ERβ is a potential therapeutic target for the suppression of hypoxia-induced inflammation in VSMCs.
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Affiliation(s)
- Choa Park
- Department of Integrative Bioscience and Biotechnology, College of Life Science, Sejong University, Seoul, Korea
| | - Joonwoo Park
- Department of Integrative Bioscience and Biotechnology, College of Life Science, Sejong University, Seoul, Korea
| | - Myeong Kuk Shim
- Department of Integrative Bioscience and Biotechnology, College of Life Science, Sejong University, Seoul, Korea
| | - Mee-Ra Rhyu
- Division of Functional Food Research, Korea Food Research Institute, Jeollabuk-do, Korea
| | - Byung-Koo Yoon
- Department of Obstetrics, Gynecology and Women's Health, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Kyung Sook Kim
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul, Korea
| | - YoungJoo Lee
- Department of Integrative Bioscience and Biotechnology, College of Life Science, Sejong University, Seoul, Korea
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Park MY, Han D, Lim JH, Shin MK, Han YR, Kim DH, Rhim S, Kim KS. Assessment of pressure pain thresholds in collisions with collaborative robots. PLoS One 2019; 14:e0215890. [PMID: 31048921 PMCID: PMC6497239 DOI: 10.1371/journal.pone.0215890] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Accepted: 04/02/2019] [Indexed: 12/01/2022] Open
Abstract
In recent years, safety issues surrounding robots have increased in importance, as more robots are in close contact with humans, both in industrial fields and elsewhere. Safety standards for industrial robots operating in specific spaces have been established, but no such standards have been specified for collaborative and service robots. To establish safety standards for such robots, we assessed pressure pain thresholds for collisions between humans and robots, under the assumption that the pain threshold is lower than the mild injury threshold. The pressure pain threshold for collision with a robot was measured in 90 male Korean adults using a homemade collision system. The pain thresholds were measured three times at 15 sites, including the forehead. The highest threshold was 196.1 ± 85.8 N/cm2 at the back of the hand, and the lowest was 65.1 ± 22.6 N/cm2 at an arm nerve. Moderate thresholds, i.e., 100–120 N/cm2, were noted on the forehead, neck muscle, ball of the thumb, and shin. The thresholds of participants < 30 years of age were lower, by 3–33%, than those of participants aged > 30 years. Thresholds differed by body mass index only at certain sites, including the shoulder joint, neck, and back of the hand. The pressure pain threshold depended on individual characteristics, body site, and age. The threshold relevant to potential human-robot collisions was determined to be between 65.1 ± 22.6 and 196.1 ± 85.8 N/cm2.
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Affiliation(s)
- Moon Young Park
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul, Korea
| | - Doyeon Han
- Department of Mechanical Engineering, Kyung Hee University, Gyeonggi-do, Korea
| | - Jung Ho Lim
- Department of Mechanical Engineering, Kyung Hee University, Gyeonggi-do, Korea
| | - Min Kyung Shin
- Department of Dermatology, College of Medicine, Kyung Hee University, Seoul, Korea
| | - Young Rok Han
- Department of Physical Medicine and Rehabilitation, College of Medicine, Kyung Hee University, Seoul, Korea
| | - Dong Hwan Kim
- Department of Physical Medicine and Rehabilitation, College of Medicine, Kyung Hee University, Seoul, Korea
| | - Sungsoo Rhim
- Department of Mechanical Engineering, Kyung Hee University, Gyeonggi-do, Korea
| | - Kyung Sook Kim
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul, Korea
- * E-mail:
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Kwon S, Lee DH, Han SJ, Yang W, Quan FS, Kim KS. Biomechanical properties of red blood cells infected by Plasmodium berghei ANKA. J Cell Physiol 2019; 234:20546-20553. [PMID: 30989677 DOI: 10.1002/jcp.28654] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2018] [Revised: 03/12/2019] [Accepted: 03/19/2019] [Indexed: 12/31/2022]
Abstract
Malaria is a pathogenic disease in mammal species and typically causes destruction of red blood cells (RBCs). The malaria-infected RBCs undergoes alterations in morphology and its rheological properties, and the altered rheological properties of RBCs have a significant impact on disease pathophysiology. In this study, we investigated detailed topological and biomechanical properties of RBCs infected with malaria Plasmodium berghei ANKA using atomic force microscopy. Mouse (BALB/c) RBCs were obtained on Days 4, 10, and 14 after infection. We found that malaria-infected RBCs changed significantly in shape. The RBCs maintained a biconcave disk shape until Day 4 after infection and then became lopsided on Day 7 after infection. The central region of RBCs began to swell beginning on Day 10 after infection. More schizont stages were present on Days 10 and 14 compared with on Day 4. The malaria-infected RBCs also showed changes in mechanical properties and the cytoskeleton. The stiffness of infected RBCs increased 4.4-4.6-fold and their cytoskeletal F-actin level increased 18.99-67.85% compared with the control cells. The increase in F-actin depending on infection time was in good agreement with the increased stiffness of infected RBCs. Because more schizont stages were found at a late period of infection at Days 10 and 14, the significant changes in biomechanical properties might contribute to the destruction of RBCs, possibly resulting in the release of merozoites into the blood circulation.
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Affiliation(s)
- Sangwoo Kwon
- Department of Physics, Dongguk University, Seoul, Republic of Korea
| | - Dong-Hun Lee
- Department of Biomedical Engineering, Graduate School, Kyung Hee University, Seoul, Republic of Korea.,Department of Medical Zoology, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Se-Jik Han
- Department of Biomedical Engineering, Graduate School, Kyung Hee University, Seoul, Republic of Korea.,Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Woochul Yang
- Department of Physics, Dongguk University, Seoul, Republic of Korea
| | - Fu-Shi Quan
- Department of Medical Zoology, School of Medicine, Kyung Hee University, Seoul, Republic of Korea.,Medical Research Center for Bioreaction to Reactive Oxygen Species and Biomedical Science Institute, School of Medicine, Graduate School, Kyung Hee University, Seoul, Republic of Korea
| | - Kyung Sook Kim
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul, Republic of Korea
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Chung IY, Hur H, Lee J, Lee JW, Youn HJ, Han K, Kim NW, Jung SY, Kim Z, Kim KS, Lee MH, Han SH, Jung SH. Abstract P1-12-02: Withdrawn. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p1-12-02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
This abstract was withdrawn by the authors.
Citation Format: Chung IY, Hur H, Lee J, Lee JW, Youn HJ, Han K, Kim NW, Jung S-Y, Kim Z, Kim KS, Lee MH, Han S-H, Jung SH. Withdrawn [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P1-12-02.
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Affiliation(s)
- IY Chung
- Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea; National Health Insurance Service Ilsan Hospital, Goyang, Republic of Korea; Soonchunhyang University Seoul Hospital, Seoul, Republic of Korea; Chonbuk National University Hospital, Jeonju, Republic of Korea; College of Medicine, Catholic University of Korea, Seoul, Republic of Korea; Breast Cancer Center, National Cancer Center, Goyang, Republic of Korea; Soonchunhyang University College of Medicine, Bucheon, Republic of Korea; Dongkang Medical Center, Ulsan, Republic of Korea; Ajou University, School of Medicine, Suwon, Republic of Korea
| | - H Hur
- Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea; National Health Insurance Service Ilsan Hospital, Goyang, Republic of Korea; Soonchunhyang University Seoul Hospital, Seoul, Republic of Korea; Chonbuk National University Hospital, Jeonju, Republic of Korea; College of Medicine, Catholic University of Korea, Seoul, Republic of Korea; Breast Cancer Center, National Cancer Center, Goyang, Republic of Korea; Soonchunhyang University College of Medicine, Bucheon, Republic of Korea; Dongkang Medical Center, Ulsan, Republic of Korea; Ajou University, School of Medicine, Suwon, Republic of Korea
| | - J Lee
- Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea; National Health Insurance Service Ilsan Hospital, Goyang, Republic of Korea; Soonchunhyang University Seoul Hospital, Seoul, Republic of Korea; Chonbuk National University Hospital, Jeonju, Republic of Korea; College of Medicine, Catholic University of Korea, Seoul, Republic of Korea; Breast Cancer Center, National Cancer Center, Goyang, Republic of Korea; Soonchunhyang University College of Medicine, Bucheon, Republic of Korea; Dongkang Medical Center, Ulsan, Republic of Korea; Ajou University, School of Medicine, Suwon, Republic of Korea
| | - JW Lee
- Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea; National Health Insurance Service Ilsan Hospital, Goyang, Republic of Korea; Soonchunhyang University Seoul Hospital, Seoul, Republic of Korea; Chonbuk National University Hospital, Jeonju, Republic of Korea; College of Medicine, Catholic University of Korea, Seoul, Republic of Korea; Breast Cancer Center, National Cancer Center, Goyang, Republic of Korea; Soonchunhyang University College of Medicine, Bucheon, Republic of Korea; Dongkang Medical Center, Ulsan, Republic of Korea; Ajou University, School of Medicine, Suwon, Republic of Korea
| | - HJ Youn
- Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea; National Health Insurance Service Ilsan Hospital, Goyang, Republic of Korea; Soonchunhyang University Seoul Hospital, Seoul, Republic of Korea; Chonbuk National University Hospital, Jeonju, Republic of Korea; College of Medicine, Catholic University of Korea, Seoul, Republic of Korea; Breast Cancer Center, National Cancer Center, Goyang, Republic of Korea; Soonchunhyang University College of Medicine, Bucheon, Republic of Korea; Dongkang Medical Center, Ulsan, Republic of Korea; Ajou University, School of Medicine, Suwon, Republic of Korea
| | - K Han
- Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea; National Health Insurance Service Ilsan Hospital, Goyang, Republic of Korea; Soonchunhyang University Seoul Hospital, Seoul, Republic of Korea; Chonbuk National University Hospital, Jeonju, Republic of Korea; College of Medicine, Catholic University of Korea, Seoul, Republic of Korea; Breast Cancer Center, National Cancer Center, Goyang, Republic of Korea; Soonchunhyang University College of Medicine, Bucheon, Republic of Korea; Dongkang Medical Center, Ulsan, Republic of Korea; Ajou University, School of Medicine, Suwon, Republic of Korea
| | - NW Kim
- Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea; National Health Insurance Service Ilsan Hospital, Goyang, Republic of Korea; Soonchunhyang University Seoul Hospital, Seoul, Republic of Korea; Chonbuk National University Hospital, Jeonju, Republic of Korea; College of Medicine, Catholic University of Korea, Seoul, Republic of Korea; Breast Cancer Center, National Cancer Center, Goyang, Republic of Korea; Soonchunhyang University College of Medicine, Bucheon, Republic of Korea; Dongkang Medical Center, Ulsan, Republic of Korea; Ajou University, School of Medicine, Suwon, Republic of Korea
| | - S-Y Jung
- Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea; National Health Insurance Service Ilsan Hospital, Goyang, Republic of Korea; Soonchunhyang University Seoul Hospital, Seoul, Republic of Korea; Chonbuk National University Hospital, Jeonju, Republic of Korea; College of Medicine, Catholic University of Korea, Seoul, Republic of Korea; Breast Cancer Center, National Cancer Center, Goyang, Republic of Korea; Soonchunhyang University College of Medicine, Bucheon, Republic of Korea; Dongkang Medical Center, Ulsan, Republic of Korea; Ajou University, School of Medicine, Suwon, Republic of Korea
| | - Z Kim
- Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea; National Health Insurance Service Ilsan Hospital, Goyang, Republic of Korea; Soonchunhyang University Seoul Hospital, Seoul, Republic of Korea; Chonbuk National University Hospital, Jeonju, Republic of Korea; College of Medicine, Catholic University of Korea, Seoul, Republic of Korea; Breast Cancer Center, National Cancer Center, Goyang, Republic of Korea; Soonchunhyang University College of Medicine, Bucheon, Republic of Korea; Dongkang Medical Center, Ulsan, Republic of Korea; Ajou University, School of Medicine, Suwon, Republic of Korea
| | - KS Kim
- Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea; National Health Insurance Service Ilsan Hospital, Goyang, Republic of Korea; Soonchunhyang University Seoul Hospital, Seoul, Republic of Korea; Chonbuk National University Hospital, Jeonju, Republic of Korea; College of Medicine, Catholic University of Korea, Seoul, Republic of Korea; Breast Cancer Center, National Cancer Center, Goyang, Republic of Korea; Soonchunhyang University College of Medicine, Bucheon, Republic of Korea; Dongkang Medical Center, Ulsan, Republic of Korea; Ajou University, School of Medicine, Suwon, Republic of Korea
| | - MH Lee
- Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea; National Health Insurance Service Ilsan Hospital, Goyang, Republic of Korea; Soonchunhyang University Seoul Hospital, Seoul, Republic of Korea; Chonbuk National University Hospital, Jeonju, Republic of Korea; College of Medicine, Catholic University of Korea, Seoul, Republic of Korea; Breast Cancer Center, National Cancer Center, Goyang, Republic of Korea; Soonchunhyang University College of Medicine, Bucheon, Republic of Korea; Dongkang Medical Center, Ulsan, Republic of Korea; Ajou University, School of Medicine, Suwon, Republic of Korea
| | - S-H Han
- Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea; National Health Insurance Service Ilsan Hospital, Goyang, Republic of Korea; Soonchunhyang University Seoul Hospital, Seoul, Republic of Korea; Chonbuk National University Hospital, Jeonju, Republic of Korea; College of Medicine, Catholic University of Korea, Seoul, Republic of Korea; Breast Cancer Center, National Cancer Center, Goyang, Republic of Korea; Soonchunhyang University College of Medicine, Bucheon, Republic of Korea; Dongkang Medical Center, Ulsan, Republic of Korea; Ajou University, School of Medicine, Suwon, Republic of Korea
| | - SH Jung
- Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea; National Health Insurance Service Ilsan Hospital, Goyang, Republic of Korea; Soonchunhyang University Seoul Hospital, Seoul, Republic of Korea; Chonbuk National University Hospital, Jeonju, Republic of Korea; College of Medicine, Catholic University of Korea, Seoul, Republic of Korea; Breast Cancer Center, National Cancer Center, Goyang, Republic of Korea; Soonchunhyang University College of Medicine, Bucheon, Republic of Korea; Dongkang Medical Center, Ulsan, Republic of Korea; Ajou University, School of Medicine, Suwon, Republic of Korea
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Park MY, Choi JS, Kim KS, Rhim S, Park HJ, Shin MK. Identification of a closed cutaneous injury after mechanical trauma caused by collision. Skin Res Technol 2019; 25:440-446. [PMID: 30632214 DOI: 10.1111/srt.12670] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Accepted: 12/08/2018] [Indexed: 11/27/2022]
Abstract
PURPOSE Robotics has evolved rapidly in terms of mechanical design and control in the past few years. Collaborative robots that have direct contact with humans are being introduced in various fields, including industrial and medical services. Because collaborative robot systems are being introduced rapidly, the safety of the humans who work with them is becoming an important issue. In this study, we investigated skin injuries resulting from a collision between robots and humans using a freefall experiment system. METHODS We particularly focused on closed skin injuries caused by a collision. To induce a closed injury, we struck mini-pigs with cubic-edge square and semi-sphere impactors at collision speeds of 1 and 3 m/s. We did not observe any open injuries with those conditions. Closed injuries were observed in the dermal layer of the skin after the collision test at both speeds and with both impactors. RESULTS The collagen fiber in the dermal layer was separated and fragmented, and the subcutaneous fat layer became dense as a result of the collision. CONCLUSIONS We closely observed and analyzed the histopathologic changes in the dermal and subcutaneous layers with intact epidermis after mechanical trauma to the inner skin layers.
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Affiliation(s)
- Moon Young Park
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul, Korea
| | - Jun Suk Choi
- Department of Mechanical Engineering, Kyung Hee University, Seoul, Gyeonggi-do, Korea
| | - Kyung Sook Kim
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul, Korea
| | - Sungsoo Rhim
- Department of Mechanical Engineering, Kyung Hee University, Seoul, Gyeonggi-do, Korea
| | - Hyung Jin Park
- Department of Dermatology, College of Medicine, Kyung Hee University, Seoul, Korea
| | - Min Kyung Shin
- Department of Dermatology, College of Medicine, Kyung Hee University, Seoul, Korea
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Kim KS, Han SJ, Lee TH, Park TJ, Choi S, Kang YG, Park KH. Surface analysis of metal clips of ceramic self-ligating brackets. Korean J Orthod 2019; 49:12-20. [PMID: 30603621 PMCID: PMC6306314 DOI: 10.4041/kjod.2019.49.1.12] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 09/10/2018] [Accepted: 09/28/2018] [Indexed: 11/18/2022] Open
Abstract
Objective The aim of this study was to analyze the surface composition, roughness, and relative friction of metal clips from various ceramic self-ligating brackets. Methods Six kinds of brackets were examined. The control group (mC) consisted of interactive metal self-ligating brackets while the experimental group (CC, EC, MA, QK, and WA) consisted of interactive ceramic self-ligating brackets. Atomic force microscopy-lateral force microscopy and scanning electron microscopy-energy-dispersive X-ray spectroscopy were used to analyze the surface of each bracket clip. Results All the clips in the experimental groups were coated with rhodium except for the QK clip. The results showed that the QK clip had the lowest average roughness on the outer surface, followed by the MA, EC, WA, and CC clips. However, the CC clip had the lowest average roughness on the inner surface, followed by the QK, WA, MA, and EC clips. The QK clip also had the lowest relative friction on the outer surface, followed by the MA, EC, CC, and WA clips. Likewise, the CC clip had the lowest relative friction on the inner surface, followed by the QK, WA, MA, and EC clips. Conclusions The surface roughness and relative friction of the rhodium-coated clips were generally higher than those of the uncoated clips.
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Affiliation(s)
- Kyung Sook Kim
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul, Korea
- Department of Medical Engineering, Graduate School, Kyung Hee University, Seoul, Korea
| | - Se Jik Han
- Department of Medical Engineering, Graduate School, Kyung Hee University, Seoul, Korea
| | - Tae-Hee Lee
- Department of Orthodontics, Graduate School, Kyung Hee University, Seoul, Korea
| | - Tae-Joon Park
- Department of Orthodontics, Graduate School, Kyung Hee University, Seoul, Korea
| | - Samjin Choi
- Department of Biomedical Engineering, College of Medicine, Kyung Hee University, Seoul, Korea
- Department of Medical Engineering, Graduate School, Kyung Hee University, Seoul, Korea
| | - Yoon-Goo Kang
- Department of Orthodontics, School of Dentistry, Kyung Hee University, Seoul, Korea
| | - Ki-Ho Park
- Department of Orthodontics, School of Dentistry, Kyung Hee University, Seoul, Korea
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Lee JS, Kim JM, Kim KS, Choi GS, Joh JW, Lee SK. Predictors of incisional hernia in adult liver transplant recipients. Hernia 2018; 23:61-65. [PMID: 30406851 DOI: 10.1007/s10029-018-1845-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [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: 07/16/2018] [Accepted: 10/29/2018] [Indexed: 01/14/2023]
Abstract
PURPOSE Incisional hernia is a complication following abdominal operation. Patients undergoing liver transplantation have a high risk of developing incisional hernia because of immunosuppression. The purpose of this study was to evaluate incisional hernia after liver transplantation and to identify risk factors for hernia formation in those patients. METHODS We retrospectively reviewed 1044 adult patients with more than 2 years of follow-up in patients who underwent liver transplantation from January 2000 to December 2015. RESULTS Incisional hernia was identified in 79 patients with more than 2 years of follow-up. The overall incisional hernia rate was 7.6%. The mean age and body mass index (BMI) of the patients with incisional hernia were 55 ± 9 years and 25.3 ± 3.7 kg/m2, respectively. No significant differences in gender, diagnosis, diabetes, Child-Pugh score, model for end-stage liver disease (MELD) score, donor type, hepatorenal syndrome, varix bleeding, ascites, hepatic encephalopathy, ventilator use, spontaneous bacterial peritonitis (SBP), or bile leakage were found between patients who did and did not develop incisional hernia. Patients with acute rejection before hernia development were more to have herniated patients hernia (p < 0.05). CONCLUSION Age greater than 55 years and high BMI were significant risk factors. We identified risk factors for the development of incisional hernia. Based on these risk factors, attention should be paid to incisional hernia in older and obese patients.
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Affiliation(s)
- J S Lee
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, South Korea
| | - J M Kim
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, South Korea.
| | - K S Kim
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, South Korea
| | - G-S Choi
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, South Korea
| | - J-W Joh
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, South Korea
| | - S-K Lee
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, South Korea
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Choi H, Shin MK, Ahn HJ, Lee TR, Son Y, Kim KS. Irritating effects of sodium lauryl sulfate on human primary keratinocytes at subtoxic levels of exposure. Microsc Res Tech 2018; 81:1339-1346. [DOI: 10.1002/jemt.23143] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 08/28/2018] [Accepted: 09/04/2018] [Indexed: 12/27/2022]
Affiliation(s)
- Hyeongwon Choi
- Department of Genetic EngineeringCollege of Life Science and Graduate School of Biotechnology, Kyung Hee University South Korea
- Lab of future technology, Amorepacific Corporation R&D Center Yongin Republic of Korea
| | - Min Kyung Shin
- Department of DermatologyCollege of Medicine, Kyung Hee University Seoul South Korea
| | - Hey Jin Ahn
- Department of DermatologyCollege of Medicine, Kyung Hee University Seoul South Korea
| | - Tae Ryong Lee
- Lab of future technology, Amorepacific Corporation R&D Center Yongin Republic of Korea
| | - Youngsook Son
- Department of Genetic EngineeringCollege of Life Science and Graduate School of Biotechnology, Kyung Hee University South Korea
- Kyung Hee Institute of Regenerative Medicine Seoul South Korea
| | - Kyung Sook Kim
- Department of Biomedical EngineeringCollege of Medicine, Kyung Hee University Seoul South Korea
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48
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Kim KS, Kang SY, Park CK, Kim GA, Park SY, Cho H, Seo CW, Lee DY, Lim HW, Lee HW, Park JE, Woo TH, Oh JE. A Compressed-Sensing Based Blind Deconvolution Method for Image Deblurring in Dental Cone-Beam Computed Tomography. J Digit Imaging 2018; 32:478-488. [PMID: 30238344 DOI: 10.1007/s10278-018-0120-9] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
In cone-beam computed tomography (CBCT), reconstructed images are inherently degraded, restricting its image performance, due mainly to imperfections in the imaging process resulting from detector resolution, noise, X-ray tube's focal spot, and reconstruction procedure as well. Thus, the recovery of CBCT images from their degraded version is essential for improving image quality. In this study, we investigated a compressed-sensing (CS)-based blind deconvolution method to solve the blurring problem in CBCT where both the image to be recovered and the blur kernel (or point-spread function) of the imaging system are simultaneously recursively identified. We implemented the proposed algorithm and performed a systematic simulation and experiment to demonstrate the feasibility of using the algorithm for image deblurring in dental CBCT. In the experiment, we used a commercially available dental CBCT system that consisted of an X-ray tube, which was operated at 90 kVp and 5 mA, and a CMOS flat-panel detector with a 200-μm pixel size. The image characteristics were quantitatively investigated in terms of the image intensity, the root-mean-square error, the contrast-to-noise ratio, and the noise power spectrum. The results indicate that our proposed method effectively reduced the image blur in dental CBCT, excluding repetitious measurement of the system's blur kernel.
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Affiliation(s)
- K S Kim
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - S Y Kang
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - C K Park
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - G A Kim
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - S Y Park
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - Hyosung Cho
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea.
| | - C W Seo
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - D Y Lee
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - H W Lim
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - H W Lee
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - J E Park
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - T H Woo
- Department of Radiation Convergence Engineering, Yonsei University, Wonju, 26493, Republic of Korea
| | - J E Oh
- Division of Convergence Technology, National Cancer Center, Goyang, 10408, Republic of Korea
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49
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Lee JH, Lee HK, Kim HS, Kim JS, Ji AY, Lee JS, Kim KS, Lee TY, Bae SC, Kim Y, Hong JT, Han SB. CXCR3-deficient mesenchymal stem cells fail to infiltrate into the nephritic kidney and do not ameliorate lupus symptoms in MRL. Fas lpr mice. Lupus 2018; 27:1854-1859. [PMID: 30139297 DOI: 10.1177/0961203318794871] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Mesenchymal stem cell therapy is a promising candidate for the treatment of systemic lupus erythematosus (SLE). To exert their efficacy fully, mesenchymal stem cells must infiltrate efficiently into the lesion sites. Here, we examined the role of CXCR3 in mesenchymal stem cell infiltration into the kidney of MRL. Faslpr mice, which highly expressed CXCL10. The phenotypes, production of immunosuppressive mediators, and capacity to inhibit T and B cells of CXCR3-deficient mesenchymal stem cells were similar to those of wild-type mesenchymal stem cells. However, they showed less infiltration into the nephritic kidney, less conjugation with endothelial cells and weaker MMP-9 expression than did wild-type mesenchymal stem cells. Consequently, CXCR3-deficient mesenchymal stem cells did not ameliorate lupus symptoms in MRL. Faslpr mice in comparison with wild-type mesenchymal stem cells. In summary, our data suggest that upregulation of CXCR3 in mesenchymal stem cells will be a good strategy to increase their infiltration into the kidney, which will improve therapeutic outcomes in SLE.
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Affiliation(s)
- J H Lee
- 1 College of Pharmacy, Chungbuk National University, Cheongju, Republic of Korea
| | - H K Lee
- 1 College of Pharmacy, Chungbuk National University, Cheongju, Republic of Korea
| | - H S Kim
- 1 College of Pharmacy, Chungbuk National University, Cheongju, Republic of Korea
| | - J S Kim
- 1 College of Pharmacy, Chungbuk National University, Cheongju, Republic of Korea
| | - A Y Ji
- 1 College of Pharmacy, Chungbuk National University, Cheongju, Republic of Korea
| | - J S Lee
- 1 College of Pharmacy, Chungbuk National University, Cheongju, Republic of Korea
| | - K S Kim
- 2 Bioengineering Institute, Corestem Inc., Gyeonggi, Republic of Korea
| | - T Y Lee
- 2 Bioengineering Institute, Corestem Inc., Gyeonggi, Republic of Korea
| | - S C Bae
- 3 Hanyang University Hospital for Rheumatic Diseases, Seoul, Republic of Korea
| | - Y Kim
- 1 College of Pharmacy, Chungbuk National University, Cheongju, Republic of Korea
| | - J T Hong
- 1 College of Pharmacy, Chungbuk National University, Cheongju, Republic of Korea
| | - S B Han
- 1 College of Pharmacy, Chungbuk National University, Cheongju, Republic of Korea
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50
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Aguilar M, Cavasonza LA, Ambrosi G, Arruda L, Attig N, Aupetit S, Azzarello P, Bachlechner A, Barao F, Barrau A, Barrin L, Bartoloni A, Basara L, Başeğmez-du Pree S, Battarbee M, Battiston R, Becker U, Behlmann M, Beischer B, Berdugo J, Bertucci B, Bindel KF, Bindi V, de Boer W, Bollweg K, Bonnivard V, Borgia B, Boschini MJ, Bourquin M, Bueno EF, Burger J, Cadoux F, Cai XD, Capell M, Caroff S, Casaus J, Castellini G, Cervelli F, Chae MJ, Chang YH, Chen AI, Chen GM, Chen HS, Chen Y, Cheng L, Chou HY, Choumilov E, Choutko V, Chung CH, Clark C, Clavero R, Coignet G, Consolandi C, Contin A, Corti C, Creus W, Crispoltoni M, Cui Z, Dadzie K, Dai YM, Datta A, Delgado C, Della Torre S, Demirköz MB, Derome L, Di Falco S, Dimiccoli F, Díaz C, von Doetinchem P, Dong F, Donnini F, Duranti M, D'Urso D, Egorov A, Eline A, Eronen T, Feng J, Fiandrini E, Fisher P, Formato V, Galaktionov Y, Gallucci G, García-López RJ, Gargiulo C, Gast H, Gebauer I, Gervasi M, Ghelfi A, Giovacchini F, Gómez-Coral DM, Gong J, Goy C, Grabski V, Grandi D, Graziani M, Guo KH, Haino S, Han KC, He ZH, Heil M, Hsieh TH, Huang H, Huang ZC, Huh C, Incagli M, Ionica M, Jang WY, Jia Y, Jinchi H, Kang SC, Kanishev K, Khiali B, Kim GN, Kim KS, Kirn T, Konak C, Kounina O, Kounine A, Koutsenko V, Kulemzin A, La Vacca G, Laudi E, Laurenti G, Lazzizzera I, Lebedev A, Lee HT, Lee SC, Leluc C, Li HS, Li JQ, Li Q, Li TX, Li ZH, Li ZY, Lim S, Lin CH, Lipari P, Lippert T, Liu D, Liu H, Lordello VD, Lu SQ, Lu YS, Luebelsmeyer K, Luo F, Luo JZ, Lyu SS, Machate F, Mañá C, Marín J, Martin T, Martínez G, Masi N, Maurin D, Menchaca-Rocha A, Meng Q, Mikuni VM, Mo DC, Mott P, Nelson T, Ni JQ, Nikonov N, Nozzoli F, Oliva A, Orcinha M, Palermo M, Palmonari F, Palomares C, Paniccia M, Pauluzzi M, Pensotti S, Perrina C, Phan HD, Picot-Clemente N, Pilo F, Pizzolotto C, Plyaskin V, Pohl M, Poireau V, Quadrani L, Qi XM, Qin X, Qu ZY, Räihä T, Rancoita PG, Rapin D, Ricol JS, Rosier-Lees S, Rozhkov A, Rozza D, Sagdeev R, Schael S, Schmidt SM, von Dratzig AS, Schwering G, Seo ES, Shan BS, Shi JY, Siedenburg T, Son D, Song JW, Tacconi M, Tang XW, Tang ZC, Tescaro D, Ting SCC, Ting SM, Tomassetti N, Torsti J, Türkoğlu C, Urban T, Vagelli V, Valente E, Valtonen E, Vázquez Acosta M, Vecchi M, Velasco M, Vialle JP, Wang LQ, Wang NH, Wang QL, Wang X, Wang XQ, Wang ZX, Wei CC, Weng ZL, Whitman K, Wu H, Wu X, Xiong RQ, Xu W, Yan Q, Yang J, Yang M, Yang Y, Yi H, Yu YJ, Yu ZQ, Zannoni M, Zeissler S, Zhang C, Zhang F, Zhang J, Zhang JH, Zhang SW, Zhang Z, Zheng ZM, Zhuang HL, Zhukov V, Zichichi A, Zimmermann N, Zuccon P. Observation of Complex Time Structures in the Cosmic-Ray Electron and Positron Fluxes with the Alpha Magnetic Spectrometer on the International Space Station. Phys Rev Lett 2018; 121:051102. [PMID: 30118287 DOI: 10.1103/physrevlett.121.051102] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 05/11/2018] [Indexed: 06/08/2023]
Abstract
We present high-statistics, precision measurements of the detailed time and energy dependence of the primary cosmic-ray electron flux and positron flux over 79 Bartels rotations from May 2011 to May 2017 in the energy range from 1 to 50 GeV. For the first time, the charge-sign dependent modulation during solar maximum has been investigated in detail by leptons alone. Based on 23.5×10^{6} events, we report the observation of short-term structures on the timescale of months coincident in both the electron flux and the positron flux. These structures are not visible in the e^{+}/e^{-} flux ratio. The precision measurements across the solar polarity reversal show that the ratio exhibits a smooth transition over 830±30 days from one value to another. The midpoint of the transition shows an energy dependent delay relative to the reversal and changes by 260±30 days from 1 to 6 GeV.
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Affiliation(s)
- M Aguilar
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - L Ali Cavasonza
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - G Ambrosi
- INFN Sezione di Perugia, I-06100 Perugia, Italy
| | - L Arruda
- Laboratório de Instrumentação e Física Experimental de Partículas (LIP), P-1000 Lisboa, Portugal
| | - N Attig
- Jülich Supercomputing Centre and JARA-FAME, Research Centre Jülich, D-52425 Jülich, Germany
| | - S Aupetit
- Laboratoire de Physique Subatomique et de Cosmologie (LPSC), CNRS/IN2P3 and Université Grenoble-Alpes, F-38026 Grenoble, France
| | - P Azzarello
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - A Bachlechner
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - F Barao
- Laboratório de Instrumentação e Física Experimental de Partículas (LIP), P-1000 Lisboa, Portugal
| | - A Barrau
- Laboratoire de Physique Subatomique et de Cosmologie (LPSC), CNRS/IN2P3 and Université Grenoble-Alpes, F-38026 Grenoble, France
| | - L Barrin
- European Organization for Nuclear Research (CERN), CH-1211 Geneva 23, Switzerland
| | | | - L Basara
- INFN TIFPA, I-38123 Povo, Trento, Italy
| | - S Başeğmez-du Pree
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, 100049, China
| | - M Battarbee
- Space Research Laboratory, Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland
| | - R Battiston
- INFN TIFPA, I-38123 Povo, Trento, Italy
- Università di Trento, I-38123 Povo, Trento, Italy
| | - U Becker
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - M Behlmann
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - B Beischer
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - J Berdugo
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - B Bertucci
- INFN Sezione di Perugia, I-06100 Perugia, Italy
- Università di Perugia, I-06100 Perugia, Italy
| | - K F Bindel
- Institut für Experimentelle Teilchenphysik, Karlsruhe Institute of Technology (KIT), D-76131 Karlsruhe, Germany
| | - V Bindi
- Physics and Astronomy Department, University of Hawaii, Honolulu, Hawaii 96822, USA
| | - W de Boer
- Institut für Experimentelle Teilchenphysik, Karlsruhe Institute of Technology (KIT), D-76131 Karlsruhe, Germany
| | - K Bollweg
- National Aeronautics and Space Administration Johnson Space Center (JSC), Jacobs Engineering, and Business Integra, Houston, Texas 77058, USA
| | - V Bonnivard
- Laboratoire de Physique Subatomique et de Cosmologie (LPSC), CNRS/IN2P3 and Université Grenoble-Alpes, F-38026 Grenoble, France
| | - B Borgia
- INFN Sezione di Roma 1, I-00185 Roma, Italy
- Università di Roma La Sapienza, I-00185 Roma, Italy
| | - M J Boschini
- INFN Sezione di Milano-Bicocca, I-20126 Milano, Italy
| | - M Bourquin
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - E F Bueno
- Instituto de Física de São Carlos, Universidade de São Paulo, CP 369, 13560-970, São Carlos, São Paulo, SP, Brazil
| | - J Burger
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - F Cadoux
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - X D Cai
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - M Capell
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - S Caroff
- Laboratoire d'Annecy-le-Vieux de Physique des Particules (LAPP), CNRS/IN2P3 and Université Savoie Mont Blanc, F-74941 Annecy-le-Vieux, France
| | - J Casaus
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | | | - F Cervelli
- INFN Sezione di Pisa, I-56100 Pisa, Italy
| | - M J Chae
- Department of Physics, Ewha Womans University, Seoul, 120-750, Korea
| | - Y H Chang
- National Central University (NCU), Chung-Li, Tao Yuan, 32054, Taiwan
| | - A I Chen
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - G M Chen
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, 100049, China
| | - H S Chen
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, 100049, China
- University of Chinese Academy of Sciences (UCAS), Beijing, 100049, China
| | - Y Chen
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - L Cheng
- Shandong University (SDU), Jinan, Shandong, 250100, China
| | - H Y Chou
- National Central University (NCU), Chung-Li, Tao Yuan, 32054, Taiwan
| | - E Choumilov
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - V Choutko
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - C H Chung
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - C Clark
- National Aeronautics and Space Administration Johnson Space Center (JSC), Jacobs Engineering, and Business Integra, Houston, Texas 77058, USA
| | - R Clavero
- Instituto de Astrofísica de Canarias (IAC), E-38205 La Laguna, and Departamento de Astrofísica, Universidad de La Laguna, E-38206 La Laguna, Tenerife, Spain
| | - G Coignet
- Laboratoire d'Annecy-le-Vieux de Physique des Particules (LAPP), CNRS/IN2P3 and Université Savoie Mont Blanc, F-74941 Annecy-le-Vieux, France
| | - C Consolandi
- Physics and Astronomy Department, University of Hawaii, Honolulu, Hawaii 96822, USA
| | - A Contin
- INFN Sezione di Bologna, I-40126 Bologna, Italy
- Università di Bologna, I-40126 Bologna, Italy
| | - C Corti
- Physics and Astronomy Department, University of Hawaii, Honolulu, Hawaii 96822, USA
| | - W Creus
- Institute of Physics, Academia Sinica, Nankang, Taipei, 11529, Taiwan
| | - M Crispoltoni
- INFN Sezione di Perugia, I-06100 Perugia, Italy
- Università di Perugia, I-06100 Perugia, Italy
| | - Z Cui
- Shandong University (SDU), Jinan, Shandong, 250100, China
| | - K Dadzie
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - Y M Dai
- Institute of Electrical Engineering (IEE), Chinese Academy of Sciences, Beijing, 100190, China
| | - A Datta
- Physics and Astronomy Department, University of Hawaii, Honolulu, Hawaii 96822, USA
| | - C Delgado
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - S Della Torre
- INFN Sezione di Milano-Bicocca, I-20126 Milano, Italy
| | - M B Demirköz
- Department of Physics, Middle East Technical University (METU), 06800 Ankara, Turkey
| | - L Derome
- Laboratoire de Physique Subatomique et de Cosmologie (LPSC), CNRS/IN2P3 and Université Grenoble-Alpes, F-38026 Grenoble, France
| | - S Di Falco
- INFN Sezione di Pisa, I-56100 Pisa, Italy
| | - F Dimiccoli
- INFN TIFPA, I-38123 Povo, Trento, Italy
- Università di Trento, I-38123 Povo, Trento, Italy
| | - C Díaz
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - P von Doetinchem
- Physics and Astronomy Department, University of Hawaii, Honolulu, Hawaii 96822, USA
| | - F Dong
- Southeast University (SEU), Nanjing, 210096, China
| | - F Donnini
- INFN Sezione di Perugia, I-06100 Perugia, Italy
- Università di Perugia, I-06100 Perugia, Italy
| | - M Duranti
- INFN Sezione di Perugia, I-06100 Perugia, Italy
| | - D D'Urso
- INFN Sezione di Perugia, I-06100 Perugia, Italy
| | - A Egorov
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - A Eline
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - T Eronen
- Space Research Laboratory, Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland
| | - J Feng
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - E Fiandrini
- INFN Sezione di Perugia, I-06100 Perugia, Italy
- Università di Perugia, I-06100 Perugia, Italy
| | - P Fisher
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - V Formato
- INFN Sezione di Perugia, I-06100 Perugia, Italy
| | - Y Galaktionov
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - G Gallucci
- INFN Sezione di Pisa, I-56100 Pisa, Italy
| | - R J García-López
- Instituto de Astrofísica de Canarias (IAC), E-38205 La Laguna, and Departamento de Astrofísica, Universidad de La Laguna, E-38206 La Laguna, Tenerife, Spain
| | - C Gargiulo
- European Organization for Nuclear Research (CERN), CH-1211 Geneva 23, Switzerland
| | - H Gast
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - I Gebauer
- Institut für Experimentelle Teilchenphysik, Karlsruhe Institute of Technology (KIT), D-76131 Karlsruhe, Germany
| | - M Gervasi
- INFN Sezione di Milano-Bicocca, I-20126 Milano, Italy
- Università di Milano-Bicocca, I-20126 Milano, Italy
| | - A Ghelfi
- Laboratoire de Physique Subatomique et de Cosmologie (LPSC), CNRS/IN2P3 and Université Grenoble-Alpes, F-38026 Grenoble, France
| | - F Giovacchini
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - D M Gómez-Coral
- Instituto de Física, Universidad Nacional Autónoma de México (UNAM), México, D. F., 01000 Mexico
| | - J Gong
- Southeast University (SEU), Nanjing, 210096, China
| | - C Goy
- Laboratoire d'Annecy-le-Vieux de Physique des Particules (LAPP), CNRS/IN2P3 and Université Savoie Mont Blanc, F-74941 Annecy-le-Vieux, France
| | - V Grabski
- Instituto de Física, Universidad Nacional Autónoma de México (UNAM), México, D. F., 01000 Mexico
| | - D Grandi
- INFN Sezione di Milano-Bicocca, I-20126 Milano, Italy
| | - M Graziani
- Institut für Experimentelle Teilchenphysik, Karlsruhe Institute of Technology (KIT), D-76131 Karlsruhe, Germany
| | - K H Guo
- Sun Yat-Sen University (SYSU), Guangzhou, 510275, China
| | - S Haino
- Institute of Physics, Academia Sinica, Nankang, Taipei, 11529, Taiwan
| | - K C Han
- National Chung-Shan Institute of Science and Technology (NCSIST), Longtan, Tao Yuan, 32546, Taiwan
| | - Z H He
- Sun Yat-Sen University (SYSU), Guangzhou, 510275, China
| | - M Heil
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - T H Hsieh
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - H Huang
- Institute of Physics, Academia Sinica, Nankang, Taipei, 11529, Taiwan
| | - Z C Huang
- Sun Yat-Sen University (SYSU), Guangzhou, 510275, China
| | - C Huh
- CHEP, Kyungpook National University, 41566 Daegu, Korea
| | - M Incagli
- INFN Sezione di Pisa, I-56100 Pisa, Italy
| | - M Ionica
- INFN Sezione di Perugia, I-06100 Perugia, Italy
| | - W Y Jang
- CHEP, Kyungpook National University, 41566 Daegu, Korea
| | - Yi Jia
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - H Jinchi
- National Chung-Shan Institute of Science and Technology (NCSIST), Longtan, Tao Yuan, 32546, Taiwan
| | - S C Kang
- CHEP, Kyungpook National University, 41566 Daegu, Korea
| | - K Kanishev
- European Organization for Nuclear Research (CERN), CH-1211 Geneva 23, Switzerland
- INFN TIFPA, I-38123 Povo, Trento, Italy
| | - B Khiali
- National Central University (NCU), Chung-Li, Tao Yuan, 32054, Taiwan
| | - G N Kim
- CHEP, Kyungpook National University, 41566 Daegu, Korea
| | - K S Kim
- CHEP, Kyungpook National University, 41566 Daegu, Korea
| | - Th Kirn
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - C Konak
- Department of Physics, Middle East Technical University (METU), 06800 Ankara, Turkey
| | - O Kounina
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - A Kounine
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - V Koutsenko
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - A Kulemzin
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - G La Vacca
- INFN Sezione di Milano-Bicocca, I-20126 Milano, Italy
- Università di Milano-Bicocca, I-20126 Milano, Italy
| | - E Laudi
- European Organization for Nuclear Research (CERN), CH-1211 Geneva 23, Switzerland
| | - G Laurenti
- INFN Sezione di Bologna, I-40126 Bologna, Italy
| | - I Lazzizzera
- INFN TIFPA, I-38123 Povo, Trento, Italy
- Università di Trento, I-38123 Povo, Trento, Italy
| | - A Lebedev
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - H T Lee
- Academia Sinica Grid Center (ASGC), Nankang, Taipei, 11529, Taiwan
| | - S C Lee
- Institute of Physics, Academia Sinica, Nankang, Taipei, 11529, Taiwan
| | - C Leluc
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - H S Li
- National Cheng Kung University, Tainan, 70101, Taiwan
| | - J Q Li
- Southeast University (SEU), Nanjing, 210096, China
| | - Q Li
- Southeast University (SEU), Nanjing, 210096, China
| | - T X Li
- Sun Yat-Sen University (SYSU), Guangzhou, 510275, China
| | - Z H Li
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, 100049, China
| | - Z Y Li
- Institute of Physics, Academia Sinica, Nankang, Taipei, 11529, Taiwan
| | - S Lim
- CHEP, Kyungpook National University, 41566 Daegu, Korea
| | - C H Lin
- Institute of Physics, Academia Sinica, Nankang, Taipei, 11529, Taiwan
| | - P Lipari
- INFN Sezione di Roma 1, I-00185 Roma, Italy
| | - T Lippert
- Jülich Supercomputing Centre and JARA-FAME, Research Centre Jülich, D-52425 Jülich, Germany
| | - D Liu
- National Central University (NCU), Chung-Li, Tao Yuan, 32054, Taiwan
| | - Hu Liu
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - V D Lordello
- Instituto de Física de São Carlos, Universidade de São Paulo, CP 369, 13560-970, São Carlos, São Paulo, SP, Brazil
| | - S Q Lu
- Institute of Physics, Academia Sinica, Nankang, Taipei, 11529, Taiwan
| | - Y S Lu
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, 100049, China
| | - K Luebelsmeyer
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - F Luo
- Shandong University (SDU), Jinan, Shandong, 250100, China
| | - J Z Luo
- Southeast University (SEU), Nanjing, 210096, China
| | - S S Lyu
- Sun Yat-Sen University (SYSU), Guangzhou, 510275, China
| | - F Machate
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - C Mañá
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - J Marín
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - T Martin
- National Aeronautics and Space Administration Johnson Space Center (JSC), Jacobs Engineering, and Business Integra, Houston, Texas 77058, USA
| | - G Martínez
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - N Masi
- INFN Sezione di Bologna, I-40126 Bologna, Italy
| | - D Maurin
- Laboratoire de Physique Subatomique et de Cosmologie (LPSC), CNRS/IN2P3 and Université Grenoble-Alpes, F-38026 Grenoble, France
| | - A Menchaca-Rocha
- Instituto de Física, Universidad Nacional Autónoma de México (UNAM), México, D. F., 01000 Mexico
| | - Q Meng
- Southeast University (SEU), Nanjing, 210096, China
| | - V M Mikuni
- Instituto de Física de São Carlos, Universidade de São Paulo, CP 369, 13560-970, São Carlos, São Paulo, SP, Brazil
| | - D C Mo
- Sun Yat-Sen University (SYSU), Guangzhou, 510275, China
| | - P Mott
- National Aeronautics and Space Administration Johnson Space Center (JSC), Jacobs Engineering, and Business Integra, Houston, Texas 77058, USA
| | - T Nelson
- Physics and Astronomy Department, University of Hawaii, Honolulu, Hawaii 96822, USA
| | - J Q Ni
- Sun Yat-Sen University (SYSU), Guangzhou, 510275, China
| | - N Nikonov
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - F Nozzoli
- INFN Sezione di Perugia, I-06100 Perugia, Italy
- INFN TIFPA, I-38123 Povo, Trento, Italy
| | - A Oliva
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - M Orcinha
- Laboratório de Instrumentação e Física Experimental de Partículas (LIP), P-1000 Lisboa, Portugal
| | - M Palermo
- Physics and Astronomy Department, University of Hawaii, Honolulu, Hawaii 96822, USA
| | - F Palmonari
- INFN Sezione di Bologna, I-40126 Bologna, Italy
- Università di Bologna, I-40126 Bologna, Italy
| | - C Palomares
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - M Paniccia
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - M Pauluzzi
- INFN Sezione di Perugia, I-06100 Perugia, Italy
- Università di Perugia, I-06100 Perugia, Italy
| | - S Pensotti
- INFN Sezione di Milano-Bicocca, I-20126 Milano, Italy
- Università di Milano-Bicocca, I-20126 Milano, Italy
| | - C Perrina
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - H D Phan
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | | | - F Pilo
- INFN Sezione di Pisa, I-56100 Pisa, Italy
| | | | - V Plyaskin
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - M Pohl
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - V Poireau
- Laboratoire d'Annecy-le-Vieux de Physique des Particules (LAPP), CNRS/IN2P3 and Université Savoie Mont Blanc, F-74941 Annecy-le-Vieux, France
| | - L Quadrani
- INFN Sezione di Bologna, I-40126 Bologna, Italy
- Università di Bologna, I-40126 Bologna, Italy
| | - X M Qi
- Sun Yat-Sen University (SYSU), Guangzhou, 510275, China
| | - X Qin
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - Z Y Qu
- Institute of Physics, Academia Sinica, Nankang, Taipei, 11529, Taiwan
| | - T Räihä
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - P G Rancoita
- INFN Sezione di Milano-Bicocca, I-20126 Milano, Italy
| | - D Rapin
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - J S Ricol
- Laboratoire de Physique Subatomique et de Cosmologie (LPSC), CNRS/IN2P3 and Université Grenoble-Alpes, F-38026 Grenoble, France
| | - S Rosier-Lees
- Laboratoire d'Annecy-le-Vieux de Physique des Particules (LAPP), CNRS/IN2P3 and Université Savoie Mont Blanc, F-74941 Annecy-le-Vieux, France
| | - A Rozhkov
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - D Rozza
- INFN Sezione di Milano-Bicocca, I-20126 Milano, Italy
- Università di Milano-Bicocca, I-20126 Milano, Italy
| | - R Sagdeev
- East-West Center for Space Science, University of Maryland, College Park, Maryland 20742, USA
| | - S Schael
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - S M Schmidt
- Jülich Supercomputing Centre and JARA-FAME, Research Centre Jülich, D-52425 Jülich, Germany
| | - A Schulz von Dratzig
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - G Schwering
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - E S Seo
- IPST, University of Maryland, College Park, Maryland 20742, USA
| | - B S Shan
- Beihang University (BUAA), Beijing, 100191, China
| | - J Y Shi
- Southeast University (SEU), Nanjing, 210096, China
| | - T Siedenburg
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - D Son
- CHEP, Kyungpook National University, 41566 Daegu, Korea
| | - J W Song
- Shandong University (SDU), Jinan, Shandong, 250100, China
| | - M Tacconi
- INFN Sezione di Milano-Bicocca, I-20126 Milano, Italy
- Università di Milano-Bicocca, I-20126 Milano, Italy
| | - X W Tang
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, 100049, China
| | - Z C Tang
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, 100049, China
| | - D Tescaro
- Instituto de Astrofísica de Canarias (IAC), E-38205 La Laguna, and Departamento de Astrofísica, Universidad de La Laguna, E-38206 La Laguna, Tenerife, Spain
| | - Samuel C C Ting
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
- European Organization for Nuclear Research (CERN), CH-1211 Geneva 23, Switzerland
| | - S M Ting
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - N Tomassetti
- INFN Sezione di Perugia, I-06100 Perugia, Italy
- Università di Perugia, I-06100 Perugia, Italy
| | - J Torsti
- Space Research Laboratory, Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland
| | - C Türkoğlu
- Department of Physics, Middle East Technical University (METU), 06800 Ankara, Turkey
| | - T Urban
- National Aeronautics and Space Administration Johnson Space Center (JSC), Jacobs Engineering, and Business Integra, Houston, Texas 77058, USA
| | - V Vagelli
- INFN Sezione di Perugia, I-06100 Perugia, Italy
- Università di Perugia, I-06100 Perugia, Italy
| | - E Valente
- INFN Sezione di Roma 1, I-00185 Roma, Italy
- Università di Roma La Sapienza, I-00185 Roma, Italy
| | - E Valtonen
- Space Research Laboratory, Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland
| | - M Vázquez Acosta
- Instituto de Astrofísica de Canarias (IAC), E-38205 La Laguna, and Departamento de Astrofísica, Universidad de La Laguna, E-38206 La Laguna, Tenerife, Spain
| | - M Vecchi
- Instituto de Física de São Carlos, Universidade de São Paulo, CP 369, 13560-970, São Carlos, São Paulo, SP, Brazil
| | - M Velasco
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain
| | - J P Vialle
- Laboratoire d'Annecy-le-Vieux de Physique des Particules (LAPP), CNRS/IN2P3 and Université Savoie Mont Blanc, F-74941 Annecy-le-Vieux, France
| | - L Q Wang
- Shandong University (SDU), Jinan, Shandong, 250100, China
| | - N H Wang
- Shandong University (SDU), Jinan, Shandong, 250100, China
| | - Q L Wang
- Institute of Electrical Engineering (IEE), Chinese Academy of Sciences, Beijing, 100190, China
| | - X Wang
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - X Q Wang
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, 100049, China
- University of Chinese Academy of Sciences (UCAS), Beijing, 100049, China
| | - Z X Wang
- Sun Yat-Sen University (SYSU), Guangzhou, 510275, China
| | - C C Wei
- Institute of Physics, Academia Sinica, Nankang, Taipei, 11529, Taiwan
| | - Z L Weng
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - K Whitman
- Physics and Astronomy Department, University of Hawaii, Honolulu, Hawaii 96822, USA
| | - H Wu
- Southeast University (SEU), Nanjing, 210096, China
| | - X Wu
- DPNC, Université de Genève, CH-1211 Genève 4, Switzerland
| | - R Q Xiong
- Southeast University (SEU), Nanjing, 210096, China
| | - W Xu
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - Q Yan
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - J Yang
- Department of Physics, Ewha Womans University, Seoul, 120-750, Korea
| | - M Yang
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, 100049, China
| | - Y Yang
- National Cheng Kung University, Tainan, 70101, Taiwan
| | - H Yi
- Southeast University (SEU), Nanjing, 210096, China
| | - Y J Yu
- Institute of Electrical Engineering (IEE), Chinese Academy of Sciences, Beijing, 100190, China
| | - Z Q Yu
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, 100049, China
| | - M Zannoni
- INFN Sezione di Milano-Bicocca, I-20126 Milano, Italy
- Università di Milano-Bicocca, I-20126 Milano, Italy
| | - S Zeissler
- Institut für Experimentelle Teilchenphysik, Karlsruhe Institute of Technology (KIT), D-76131 Karlsruhe, Germany
| | - C Zhang
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, 100049, China
| | - F Zhang
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, 100049, China
| | - J Zhang
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - J H Zhang
- Southeast University (SEU), Nanjing, 210096, China
| | - S W Zhang
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, 100049, China
- University of Chinese Academy of Sciences (UCAS), Beijing, 100049, China
| | - Z Zhang
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
| | - Z M Zheng
- Beihang University (BUAA), Beijing, 100191, China
| | - H L Zhuang
- Institute of High Energy Physics (IHEP), Chinese Academy of Sciences, Beijing, 100049, China
| | - V Zhukov
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - A Zichichi
- INFN Sezione di Bologna, I-40126 Bologna, Italy
- Università di Bologna, I-40126 Bologna, Italy
| | - N Zimmermann
- I. Physics Institute and JARA-FAME, RWTH Aachen University, D-52056 Aachen, Germany
| | - P Zuccon
- Massachusetts Institute of Technology (MIT), Cambridge, Massachusetts 02139, USA
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