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Lee DU, Jeong SB, Lee BJ, Park SK, Kim HM, Shin JH, Lee SY, Kim G, Park J, Kim GM, Jung JH, Choi DY. Antimicrobial and Antifouling Effects of Petal-Like Nanostructure by Evaporation-Induced Self-Assembly for Personal Protective Equipment. Small 2024; 20:e2306324. [PMID: 37990401 DOI: 10.1002/smll.202306324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 10/19/2023] [Indexed: 11/23/2023]
Abstract
Although the personal protective equipment (PPE) used by healthcare workers (HCWs) effectively blocks hazardous substances and pathogens, it does not fully rule out the possibility of infection, as pathogens surviving on the fabric surface pose a substantial risk of cross-infection through unintended means. Therefore, PPE materials that exhibit effective biocidal activity while minimizing contamination by viscous body fluids (e.g., blood and saliva) and pathogen-laden droplets are highly sought. In this study, petal-like nanostructures (PNSs) are synthesized through the vertical rearrangement of colloidal lamellar bilayers via evaporation-induced self-assembly of octadecylamine, silica-alumina sol, and diverse photosensitizer. The developed method is compatible with various fabrics and imparts visible-light-activated antimicrobial and superhydrophobic-based antifouling activities. PNS-coated fabrics could provide a high level of protection and effectively block pathogen transmission as exemplified by their ability to roll off viscous body fluids reducing bacterial droplet adhesion and to inactivate various microorganisms. The combination of antifouling and photobiocidal activities results in the complete inactivation of sprayed pathogen-laden droplets within 30 min. Thus, this study paves the way for effective contagious disease management and the protection of HCWs in general medical environments, inspiring further research on the fabrication of materials that integrate multiple useful functionalities.
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Affiliation(s)
- Dong Uk Lee
- Biomedical Manufacturing Technology Center, Korea Institute of Industrial Technology, Yeongcheon, 38822, Republic of Korea
| | - Sang Bin Jeong
- Indoor Environment Center, Korea Testing Laboratory, Seoul, 08389, Republic of Korea
- Department of Mechanical Engineering, Sejong University, Seoul, 05006, Republic of Korea
| | - Byeong Jin Lee
- Biomedical Manufacturing Technology Center, Korea Institute of Industrial Technology, Yeongcheon, 38822, Republic of Korea
- School of Mechanical Engineering, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Se Kye Park
- Biomedical Manufacturing Technology Center, Korea Institute of Industrial Technology, Yeongcheon, 38822, Republic of Korea
| | - Hyoung-Mi Kim
- Biomedical Manufacturing Technology Center, Korea Institute of Industrial Technology, Yeongcheon, 38822, Republic of Korea
| | - Jae Hak Shin
- Department of Mechanical Engineering, Sejong University, Seoul, 05006, Republic of Korea
| | - Seung Yeon Lee
- Department of Mechanical Engineering, Sejong University, Seoul, 05006, Republic of Korea
| | - Gunwoo Kim
- Biomedical Manufacturing Technology Center, Korea Institute of Industrial Technology, Yeongcheon, 38822, Republic of Korea
| | - Junghun Park
- Biomedical Manufacturing Technology Center, Korea Institute of Industrial Technology, Yeongcheon, 38822, Republic of Korea
| | - Gyu Man Kim
- School of Mechanical Engineering, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Jae Hee Jung
- Department of Mechanical Engineering, Sejong University, Seoul, 05006, Republic of Korea
| | - Dong Yun Choi
- Biomedical Manufacturing Technology Center, Korea Institute of Industrial Technology, Yeongcheon, 38822, Republic of Korea
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2
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Guha A, Whaley-Mayda L, Lee SY, Tokmakoff A. Molecular factors determining brightness in fluorescence-encoded infrared vibrational spectroscopy. J Chem Phys 2024; 160:104202. [PMID: 38456530 DOI: 10.1063/5.0190231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 02/19/2024] [Indexed: 03/09/2024] Open
Abstract
Fluorescence-encoded infrared (FEIR) spectroscopy is a recently developed technique for solution-phase vibrational spectroscopy with detection sensitivity at the single-molecule level. While its spectroscopic information content and important criteria for its practical experimental optimization have been identified, a general understanding of the electronic and nuclear properties required for highly sensitive detection, i.e., what makes a molecule a "good FEIR chromophore," is lacking. This work explores the molecular factors that determine FEIR vibrational activity and assesses computational approaches for its prediction. We employ density functional theory (DFT) and its time-dependent version (TD-DFT) to compute vibrational and electronic transition dipole moments, their relative orientation, and the Franck-Condon factors involved in FEIR activity. We apply these methods to compute the FEIR activities of normal modes of chromophores from the coumarin family and compare these predictions with experimental FEIR cross sections. We discuss the extent to which we can use computational models to predict the FEIR activity of individual vibrations in a candidate molecule. The results discussed in this work provide the groundwork for computational strategies for choosing FEIR vibrational probes or informing the structure of designer chromophores for single-molecule spectroscopic applications.
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Affiliation(s)
- Abhirup Guha
- Department of Chemistry, James Franck Institute, and Institute of Biophysical Dynamics, The University of Chicago, Chicago, Illinois 60637, USA
| | - Lukas Whaley-Mayda
- Department of Chemistry, James Franck Institute, and Institute of Biophysical Dynamics, The University of Chicago, Chicago, Illinois 60637, USA
| | - Seung Yeon Lee
- Department of Chemistry, James Franck Institute, and Institute of Biophysical Dynamics, The University of Chicago, Chicago, Illinois 60637, USA
| | - Andrei Tokmakoff
- Department of Chemistry, James Franck Institute, and Institute of Biophysical Dynamics, The University of Chicago, Chicago, Illinois 60637, USA
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3
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Basak I, Wicky HE, McDonald KO, Xu JB, Palmer JE, Best HL, Lefrancois S, Lee SY, Schoderboeck L, Hughes SM. Correction: A lysosomal enigma CLN5 and its significance in understanding neuronal ceroid lipofuscinosis. Cell Mol Life Sci 2024; 81:45. [PMID: 38236309 PMCID: PMC10796411 DOI: 10.1007/s00018-023-05047-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/10/2023] [Indexed: 01/19/2024]
Affiliation(s)
- I Basak
- Neurodegenerative and Lysosomal Disease Laboratory, Department of Biochemistry, School of Biomedical Sciences, Brain Health Research Centre, University of Otago, 710 Cumberland Street, Dunedin, 9016, New Zealand
| | - H E Wicky
- Neurodegenerative and Lysosomal Disease Laboratory, Department of Biochemistry, School of Biomedical Sciences, Brain Health Research Centre, University of Otago, 710 Cumberland Street, Dunedin, 9016, New Zealand
| | - K O McDonald
- Neurodegenerative and Lysosomal Disease Laboratory, Department of Biochemistry, School of Biomedical Sciences, Brain Health Research Centre, University of Otago, 710 Cumberland Street, Dunedin, 9016, New Zealand
| | - J B Xu
- Neurodegenerative and Lysosomal Disease Laboratory, Department of Biochemistry, School of Biomedical Sciences, Brain Health Research Centre, University of Otago, 710 Cumberland Street, Dunedin, 9016, New Zealand
| | - J E Palmer
- Neurodegenerative and Lysosomal Disease Laboratory, Department of Biochemistry, School of Biomedical Sciences, Brain Health Research Centre, University of Otago, 710 Cumberland Street, Dunedin, 9016, New Zealand
| | - H L Best
- Neurodegenerative and Lysosomal Disease Laboratory, Department of Biochemistry, School of Biomedical Sciences, Brain Health Research Centre, University of Otago, 710 Cumberland Street, Dunedin, 9016, New Zealand
- School of Biosciences, Cardiff University, Sir Martin Evans Building, Museum Avenue, CF10 3AX, Wales, UK
| | - S Lefrancois
- Centre INRS-Institut Armand-Frappier, INRS, H7V 1B7, Laval, Canada
- Department of Anatomy and Cell Biology, McGill University, H3A 2B2, Montreal, Canada
| | - S Y Lee
- Department of Biochemistry and Molecular Biology, University of Kansas Medical Center, 66160, Kansas City, KS, USA
| | - L Schoderboeck
- Neurodegenerative and Lysosomal Disease Laboratory, Department of Biochemistry, School of Biomedical Sciences, Brain Health Research Centre, University of Otago, 710 Cumberland Street, Dunedin, 9016, New Zealand
| | - S M Hughes
- Neurodegenerative and Lysosomal Disease Laboratory, Department of Biochemistry, School of Biomedical Sciences, Brain Health Research Centre, University of Otago, 710 Cumberland Street, Dunedin, 9016, New Zealand.
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Kim JC, Choi MG, Park JS, Lee SY, Park CW, Chung BY, Misery L, Kim HO. Sensitive skin is associated with contact sensitization and decreased nociceptive threshold. J Eur Acad Dermatol Venereol 2024; 38:e125-e127. [PMID: 37556672 DOI: 10.1111/jdv.19398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 08/03/2023] [Indexed: 08/11/2023]
Affiliation(s)
- J C Kim
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, South Korea
| | - M G Choi
- Department of Computer Science, Kwangwoon University, Seoul, South Korea
| | - J S Park
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, South Korea
| | - S Y Lee
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, South Korea
| | - C W Park
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, South Korea
| | - B Y Chung
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, South Korea
| | - L Misery
- Department of Dermatology, University Hospital of Brest, Brest, France
| | - H O Kim
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, South Korea
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Lee GH, Lee SY, Chae JY, Kim JW, Kim JH, Jeong HG. Antarctic Krill Oil from Euphausia superba Ameliorates Carrageenan-Induced Thrombosis in a Mouse Model. Int J Mol Sci 2023; 24:17440. [PMID: 38139268 PMCID: PMC10743491 DOI: 10.3390/ijms242417440] [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: 11/08/2023] [Revised: 12/11/2023] [Accepted: 12/11/2023] [Indexed: 12/24/2023] Open
Abstract
FJH-KO obtained from Antarctic krill, especially Euphausia superba, has been reported to contain high amounts of omega-3 polyunsaturated fatty acids (n-3 PUFA) and to exhibit anticancer and anti-inflammatory properties. However, its antithrombotic effects have not yet been reported. This study aimed to investigate the antithrombotic effects of FJH-KO in carrageenan-induced thrombosis mouse models and human endothelial cells. Thrombosis was induced by carrageenan injection, whereas the mice received FJH-KO pretreatment. FJH-KO attenuated carrageenan-induced thrombus formation in mouse tissue vessels and prolonged tail bleeding. The inhibitory effect of FJH-KO was associated with decreased plasma levels of thromboxane B2, P-selectin, endothelin-1, β-thromboglobulin, platelet factor 4, serotonin, TNF-α, IL-1β, and IL-6. Meanwhile, FJH-KO induced plasma levels of prostacyclin I2 and plasminogen. In vitro, FJH-KO decreased the adhesion of THP-1 monocytes to human endothelial cells stimulated by TNF-α via eNOS activation and NO production. Furthermore, FJH-KO inhibited the expression of TNF-α-induced adhesion molecules such as ICAM-1 and VCAM-1 by suppressing the NF-κB signaling pathway. Taken together, our study demonstrates that FJH-KO protects against carrageenan-induced thrombosis by regulating endothelial cell activation and has potential as an antithrombotic agent.
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Affiliation(s)
- Gi Ho Lee
- Department of Toxicology, College of Pharmacy, Chungnam National University, Daejeon 34134, Republic of Korea; (G.H.L.); (S.Y.L.); (J.Y.C.); (J.W.K.)
| | - Seung Yeon Lee
- Department of Toxicology, College of Pharmacy, Chungnam National University, Daejeon 34134, Republic of Korea; (G.H.L.); (S.Y.L.); (J.Y.C.); (J.W.K.)
| | - Ju Yeon Chae
- Department of Toxicology, College of Pharmacy, Chungnam National University, Daejeon 34134, Republic of Korea; (G.H.L.); (S.Y.L.); (J.Y.C.); (J.W.K.)
| | - Jae Won Kim
- Department of Toxicology, College of Pharmacy, Chungnam National University, Daejeon 34134, Republic of Korea; (G.H.L.); (S.Y.L.); (J.Y.C.); (J.W.K.)
| | - Jin-Hee Kim
- Department of Biomedical Laboratory Science, College of Health Science, Cheongju University, Cheongju 28503, Republic of Korea;
| | - Hye Gwang Jeong
- Department of Toxicology, College of Pharmacy, Chungnam National University, Daejeon 34134, Republic of Korea; (G.H.L.); (S.Y.L.); (J.Y.C.); (J.W.K.)
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6
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Cha SG, Rhim WK, Kim JY, Lee EH, Lee SY, Park JM, Lee JE, Yoon H, Park CG, Kim BS, Kwon TG, Lee Y, Lee DR, Han DK. Kidney tissue regeneration using bioactive scaffolds incorporated with differentiating extracellular vesicles and intermediate mesoderm cells. Biomater Res 2023; 27:126. [PMID: 38049879 PMCID: PMC10696796 DOI: 10.1186/s40824-023-00471-x] [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: 10/06/2023] [Accepted: 11/24/2023] [Indexed: 12/06/2023] Open
Abstract
BACKGROUND To overcome the limitations of current alternative therapies for chronic kidney disease (CKD), tissue engineering-mediated regeneration strategies have demonstrated the possibilities for complete kidney tissue regeneration. Given the challenges associated with the reproducibility of renal basal cells, the incorporation of intermediate mesoderm (IM) cells and bioactive materials to control bioactivities of cells with supported scaffolds should be considered as a viable approach to enable the regeneration of the complex kidney structure via renal differentiation. METHODS We developed PMEZ scaffolds by combining crucial bioactive components, such as ricinoleic acid-grafted Mg(OH)2 (M), extracellular matrix (E), and alpha lipoic acid-conjugated ZnO (Z) integrated into biodegradable porous PLGA (P) platform. Additionally, we utilized differentiating extracellular vesicles (dEV) isolated during intermediate mesoderm differentiation into kidney progenitor cells, and IM cells were serially incorporated to facilitate kidney tissue regeneration through their differentiation into kidney progenitor cells in the 3/4 nephrectomy mouse model. RESULTS The use of differentiating extracellular vesicles facilitated IM differentiation into kidney progenitor cells without additional differentiation factors. This led to improvements in various regeneration-related bioactivities including tubule and podocyte regeneration, anti-fibrosis, angiogenesis, and anti-inflammation. Finally, implanting PMEZ/dEV/IM scaffolds in mouse injury model resulted in the restoration of kidney function. CONCLUSIONS Our study has demonstrated that utilizing biodegradable PLGA-based scaffolds, which include multipotent cells capable of differentiating into various kidney progenitor cells along with supporting components, can facilitate kidney tissue regeneration in the mouse model that simulates CKD through 3/4 nephrectomy.
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Affiliation(s)
- Seung-Gyu Cha
- Department of Biomedical Science, CHA University, 335 Pangyo-ro, Bundang-gu, Seongnam- si, 13488, Gyeonggi-do, Republic of Korea
| | - Won-Kyu Rhim
- Department of Biomedical Science, CHA University, 335 Pangyo-ro, Bundang-gu, Seongnam- si, 13488, Gyeonggi-do, Republic of Korea
| | - Jun Yong Kim
- Department of Biomedical Science, CHA University, 335 Pangyo-ro, Bundang-gu, Seongnam- si, 13488, Gyeonggi-do, Republic of Korea
- Department of Biomedical Engineering, SKKU Institute for Convergence, Sungkyunkwan University (SKKU), 2066 Seobu-ro, Jangan-gu, Suwon-si, 16419, Gyeonggi-do, Republic of Korea
- Intelligent Precision of Healthcare Convergence, SKKU Institute for Convergence, Sungkyunkwan University (SKKU), 2066 Seobu-ro, Jangan-gu, Suwon-si, 16419, Gyeonggi-do, Republic of Korea
| | - Eun Hye Lee
- Joint Institute for Regenerative Medicine, Kyungpook National University, Jung-gu, Daegu, 41944, Republic of Korea
| | - Seung Yeon Lee
- Department of Biomedical Science, CHA University, 335 Pangyo-ro, Bundang-gu, Seongnam- si, 13488, Gyeonggi-do, Republic of Korea
| | - Jeong Min Park
- Department of Biomedical Science, CHA University, 335 Pangyo-ro, Bundang-gu, Seongnam- si, 13488, Gyeonggi-do, Republic of Korea
| | - Jeoung Eun Lee
- Bundang Medical Center, CHA Advanced Research Institute, CHA University, Sungnam- si, 13488, Gyeonggi-do, Republic of Korea
| | - Hyeji Yoon
- Department of Chemistry and Nanoscience, Ewha Womans University, Seodaemun-gu, Seoul, Republic of Korea
| | - Chun Gwon Park
- Department of Biomedical Engineering, SKKU Institute for Convergence, Sungkyunkwan University (SKKU), 2066 Seobu-ro, Jangan-gu, Suwon-si, 16419, Gyeonggi-do, Republic of Korea
- Intelligent Precision of Healthcare Convergence, SKKU Institute for Convergence, Sungkyunkwan University (SKKU), 2066 Seobu-ro, Jangan-gu, Suwon-si, 16419, Gyeonggi-do, Republic of Korea
| | - Bum Soo Kim
- Joint Institute for Regenerative Medicine, Kyungpook National University, Jung-gu, Daegu, 41944, Republic of Korea
- Department of Urology, School of Medicine, Kyungpook National University, Jung-gu, Daegu, 41944, Republic of Korea
| | - Tae Gyun Kwon
- Joint Institute for Regenerative Medicine, Kyungpook National University, Jung-gu, Daegu, 41944, Republic of Korea
- Department of Urology, School of Medicine, Kyungpook National University, Jung-gu, Daegu, 41944, Republic of Korea
| | - Youngmi Lee
- Department of Chemistry and Nanoscience, Ewha Womans University, Seodaemun-gu, Seoul, Republic of Korea
| | - Dong Ryul Lee
- Department of Biomedical Science, CHA University, 335 Pangyo-ro, Bundang-gu, Seongnam- si, 13488, Gyeonggi-do, Republic of Korea
- Bundang Medical Center, CHA Advanced Research Institute, CHA University, Sungnam- si, 13488, Gyeonggi-do, Republic of Korea
| | - Dong Keun Han
- Department of Biomedical Science, CHA University, 335 Pangyo-ro, Bundang-gu, Seongnam- si, 13488, Gyeonggi-do, Republic of Korea.
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Sohn JH, Cho SJ, Lee HW, Kim H, Lee SY, Park Y, Seo HY, Kim ES, Park JE, Hahm BJ. Effectiveness of a Community-Based Intensive Case Management Model on Reducing Hospitalization for People With Severe Mental Illness in Seoul. Psychiatry Investig 2023; 20:1133-1141. [PMID: 38163652 PMCID: PMC10758329 DOI: 10.30773/pi.2023.0152] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 07/11/2023] [Accepted: 08/31/2023] [Indexed: 01/03/2024] Open
Abstract
OBJECTIVE To overcome the limited effectiveness of standard case management services, the Seoul Intensive Case Management program (S-ICM) for patients with serious mental illnesses was introduced in 2017. This study aimed to evaluate its effectiveness in reducing the length of hospital stay. METHODS Monitoring data from April 2019 to March 2020 were retrieved from the Seoul Mental Health Welfare Center. A total of 759 participants with serious mental illnesses were included. The average length of admission per month was compared between the pre-ICM (previous year) and during-ICM periods. For post-ICM observation subgroup, average length of admission per month was compared between pre-ICM, during-ICM, and post-ICM periods. To determine the relative contributions of risk factors for during-ICM and post-ICM admission, multivariate logistic regression analyses were performed. RESULTS The average admission stay for pre-ICM period was significantly longer than that for during-ICM period (1.47 vs. 0.26 days). Among the predictors for during-ICM admission, pre-ICM psychiatric admission was the most important risk factor, followed by medical aid beneficiary and suicidal behavior. In the subgroup analysis of the post-ICM observation period, the pre-ICM, during-ICM, and post-ICM average admission stays were 1.45, 0.29, and 0.57 days/month, respectively. There was a significant difference in the average length of stay between the pre-ICM and during-ICM periods and between the pre-ICM and post-ICM periods. Post-ICM admission risks included pre-ICM admission, S-ICM duration <3 months, and chronic unstable symptoms. CONCLUSION The results suggest that the S-ICM effectively reduces psychiatric hospitalization duration, at least over a short-term period.
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Affiliation(s)
- Jee Hoon Sohn
- Public Healthcare Center, Seoul National University Hospital, Seoul, Republic of Korea
- Institute of Public Health and Medical Services, Seoul National University Hospital, Seoul, Republic of Korea
- Department of Psychiatry, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Sung Joon Cho
- Department of Psychiatry, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
- Workplace Mental Health Institute, Kangbuk Samsung Hospital, Seoul, Republic of Korea
| | - Hae Woo Lee
- Seoul Mental Health Welfare Center, Seoul, Republic of Korea
- Department of Psychiatry, Seoul Medical Center, Seoul, Republic of Korea
| | - Hyun Kim
- Seoul Mental Health Welfare Center, Seoul, Republic of Korea
| | - Seung Yeon Lee
- Seoul Mental Health Welfare Center, Seoul, Republic of Korea
| | - Yoomi Park
- Citizens’ Health Bureau, Seoul Metopolitan Government, Seoul, Republic of Korea
| | - Hwo Yeon Seo
- Institute of Public Health and Medical Services, Seoul National University Hospital, Seoul, Republic of Korea
- Jongno-gu Community Mental Health Welfare Center, Seoul, Republic of Korea
| | - Eun Soo Kim
- Department of Psychiatry, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Jee Eun Park
- Department of Psychiatry, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Bong Jin Hahm
- Department of Psychiatry, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
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8
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Shin JH, Jeong SB, Kim IH, Lee SY, Hwang GB, Park I, Heo KJ, Jung JH. Performance comparison of photodynamic antimicrobial chemotherapy with visible-light-activated organic dyes: Rose bengal, crystal violet, methylene blue, and toluidine blue O. Environ Res 2023; 238:117159. [PMID: 37722581 DOI: 10.1016/j.envres.2023.117159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 09/09/2023] [Accepted: 09/14/2023] [Indexed: 09/20/2023]
Abstract
This study evaluated the photobiocidal performance of four widely distributed visible-light-activated (VLA) dyes against two bacteria (Staphylococcus epidermidis and Escherichia coli) and two bacteriophages (phages MS2 and phi 6): rose bengal (RB), crystal violet, methylene blue, and toluidine blue O (TBO). The photobiocidal performance of each dye depended on the relationship between the type of dye and microorganism. Gram-negative E. coli and the non-enveloped structure of phage MS2 showed more resistance to the photobiocidal reaction than Gram-positive S. epidermidis and the enveloped structure of phage phi 6. RB had the highest potential to yield reactive oxygen species. However, the photobiocidal performance of RB was dependent on the magnitude of the surface charge of the microorganisms; for example, anionic RB induced a negative surface charge and thus electrical repulsion. On the other hand, the photobiocidal performance of TBO was observed to be less affected by the microorganism type. The comparative results presented in our study have significant implications for selecting photodynamic antimicrobial chemotherapy (PACT) dyes suitable for specific situations and purposes. Furthermore, they contribute to the advancement of PACT-related technologies by enhancing their applicability and scalability.
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Affiliation(s)
- Jae Hak Shin
- Department of Mechanical Engineering, Sejong University, Seoul, 05006, Republic of Korea
| | - Sang Bin Jeong
- Department of Mechanical Engineering, Sejong University, Seoul, 05006, Republic of Korea; Indoor Environment Center, Korea Testing Laboratory, Seoul, 08389, Republic of Korea
| | - In Ho Kim
- Department of Mechanical Engineering, Sejong University, Seoul, 05006, Republic of Korea
| | - Seung Yeon Lee
- Department of Mechanical Engineering, Sejong University, Seoul, 05006, Republic of Korea
| | - Gi Byoung Hwang
- Material Chemistry Research Centre, Department of Chemistry, University College London, London, WC1H 0AJ, United Kingdom
| | - Inyong Park
- Department of Sustainable Environment Research, Korea Institute of Machinery and Materials, Daejeon, 34141, Republic of Korea
| | - Ki Joon Heo
- School of Mechanical Engineering, Chonnam National University, Gwangju, 61186, Republic of Korea.
| | - Jae Hee Jung
- Department of Mechanical Engineering, Sejong University, Seoul, 05006, Republic of Korea.
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9
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Choi JH, Lee JS, Yang DH, Nah H, Min SJ, Lee SY, Yoo JH, Chun HJ, Moon HJ, Hong YK, Heo DN, Kwon IK. Development of a Temperature-Responsive Hydrogel Incorporating PVA into NIPAAm for Controllable Drug Release in Skin Regeneration. ACS Omega 2023; 8:44076-44085. [PMID: 38027389 PMCID: PMC10666273 DOI: 10.1021/acsomega.3c06291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 10/09/2023] [Accepted: 10/30/2023] [Indexed: 12/01/2023]
Abstract
Melanoma, a highly malignant and aggressive form of skin cancer, poses a significant global health threat, with limited treatment options and potential side effects. In this study, we developed a temperature-responsive hydrogel for skin regeneration with a controllable drug release. The hydrogel was fabricated using an interpenetrating polymer network (IPN) of N-isopropylacrylamide (NIPAAm) and poly(vinyl alcohol) (PVA). PVA was chosen for its adhesive properties, biocompatibility, and ability to address hydrophobicity issues associated with NIPAAm. The hydrogel was loaded with doxorubicin (DOX), an anticancer drug, for the treatment of melanoma. The NIPAAm-PVA (N-P) hydrogel demonstrated temperature-responsive behavior with a lower critical solution temperature (LCST) around 34 °C. The addition of PVA led to increased porosity and faster drug release. In vitro biocompatibility tests showed nontoxicity and supported cell proliferation. The N-P hydrogel exhibited effective anticancer effects on melanoma cells due to its rapid drug release behavior. This N-P hydrogel system shows great promise for controlled drug delivery and potential applications in skin regeneration and cancer treatment. Further research, including in vivo studies, will be essential to advance this hydrogel system toward clinical translation and impactful advancements in regenerative medicine and cancer therapeutics.
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Affiliation(s)
- Jae Hwan Choi
- Department
of Biomedical Science and Technology, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
- Biofirends
Inc., 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Jae Seo Lee
- Department
of Dental Materials, School of Dentistry, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic
of Korea
- Division
of Engineering in Medicine, Brigham and Women’s Hospital, Harvard Medical School, 65 Landsdowne Street, Cambridge, Massachusetts 02139, United States
| | - Dae Hyeok Yang
- Institute
of Cell and Tissue Engineering, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
| | - Haram Nah
- Biofirends
Inc., 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
- Department
of Dentistry, Graduate School, Kyung Hee
University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Sung Jun Min
- Department
of Dentistry, Graduate School, Kyung Hee
University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Seung Yeon Lee
- Department
of Dentistry, Graduate School, Kyung Hee
University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Ji Hye Yoo
- Department
of Biomedical Science and Technology, Graduate School, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
| | - Heung Jae Chun
- Institute
of Cell and Tissue Engineering, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
| | - Ho-Jin Moon
- Department
of Dental Materials, School of Dentistry, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic
of Korea
| | - Young Ki Hong
- Department
of Biomedical Materials, Konyang University, Daejeon 35365, Republic of Korea
| | - Dong Nyoung Heo
- Biofirends
Inc., 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea
- Department
of Dental Materials, School of Dentistry, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic
of Korea
| | - Il Keun Kwon
- Department
of Dental Materials, School of Dentistry, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic
of Korea
- Kyung
Hee University Medical Science Research Institute, Kyung Hee University, 23 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic
of Korea
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10
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Cribb Fabersunne C, Lee SY, McBride D, Zahir A, Gallegos-Castillo A, LeWinn KZ, Morris MD. Exclusionary School Discipline and School Achievement for Middle and High School Students, by Race and Ethnicity. JAMA Netw Open 2023; 6:e2338989. [PMID: 37862011 PMCID: PMC10589805 DOI: 10.1001/jamanetworkopen.2023.38989] [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] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 09/08/2023] [Indexed: 10/21/2023] Open
Abstract
Importance There are racial and ethnic inequities in exclusionary school discipline (ESD) (ie, a disciplinary action that removes students from their classroom or school environment, eg, referrals, suspensions, and/or expulsions) practices in the US. Exclusionary school discipline has been associated with negative education, health, and criminal justice outcomes. Objectives To investigate whether experiencing an ESD event was associated with decreased grade point average (GPA) and whether minoritized students (eg, Black or Latine [description used in database]) are disproportionately affected compared with White students. Design, Setting, and Participants In a cohort study using retrospective administrative longitudinal data of children in the 6th to 10th grades (August 18, 2014, to May 26, 2017) in a large, single urban school district in California, linear mixed models were applied to compare the timing of the first exclusionary event and the average change in GPA and evaluate the relative variation among minoritized students experiencing an exclusionary event. Data analysis was conducted from August 18, 2018, to August 21, 2023. Exposure Year at which students experienced first ESD events over the study period. Main Outcomes and Measures The primary outcome of interest was change in average grade point average (GPA); students' GPA averaged across courses was averaged across each year. Results Of the 16 849 students (8756 [52.0%] male), 21.4% experienced at least 1 ESD event. The mean (SD) age was 14.3 (1.6) years, and 7.5% identified as Black, 25.6% Latine, and 10.0% White. Black and Latine students experienced exclusionary events at nearly 10 and 3 times more than White students (mean [SD]: Black, 6.69 [12.80] events; Latine, 2.01 [6.18] events; White, 0.71 [4.46] events; P < .001). When controlling for gender, maternal educational level, race and ethnicity, and school year, having experienced an ESD event in the first year was associated with an average decrease in GPA by 0.88 (95% CI, -0.91 to -0.84) points compared with no ESD events; experiencing ESD events also had significant differences in the second (-0.63 [95% CI, -0.67 to -0.59]) and third (-0.52 [95% CI, -0.57 to -0.47]) years. Black and Latine race and ethnicity was associated with the greatest decrease in GPA compared with White students (Black, -0.56 [95% CI, -0.61 to -0.51]; Latine, -0.51 [95% CI, -0.54 to -0.47]; P < .001). Conclusion and Relevance This study observed racial and ethnic inequities in ESD prevalence and its association with educational attainment. The findings suggest that it may be beneficial for pediatricians and other health care professionals to screen for exclusion, as experiencing ESD events may affect health across the life course. In addition, it may be useful to categorize ESD events as an adverse childhood experience and abolish the practice from schools as a disciplinary measure.
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Affiliation(s)
- Camila Cribb Fabersunne
- Department of Pediatrics, University of California, San Francisco
- Department of Pediatrics, Zuckerberg San Francisco General Hospital, San Francisco, California
| | | | - Dannielle McBride
- Department of Pediatrics, Zuckerberg San Francisco General Hospital, San Francisco, California
- Department of Medicine, University of California, San Francisco
| | - Ali Zahir
- Department of Neurology, University of California, San Francisco
| | | | - Kaja Z. LeWinn
- Department of Psychiatry and Behavioral Health Sciences, University of California, San Francisco
| | - Meghan D. Morris
- Department of Epidemiology and Biostatistics, University of California, San Francisco
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11
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Pham TH, Lee GH, Jin SW, Lee SY, Han EH, Kim ND, Choi CY, Jeong GS, Ki Lee S, Kim HS, Jeong HG. Sesamin ameliorates lipotoxicity and lipid accumulation through the activation of the estrogen receptor alpha signaling pathway. Biochem Pharmacol 2023; 216:115768. [PMID: 37652106 DOI: 10.1016/j.bcp.2023.115768] [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: 06/28/2023] [Revised: 08/22/2023] [Accepted: 08/23/2023] [Indexed: 09/02/2023]
Abstract
Nonalcoholic fatty liver disease (NAFLD) has been linked to fat accumulation in the liver and lipid metabolism imbalance. Sesamin, a lignan commonly found in sesame seed oil, possesses antioxidant, anti-inflammatory, and anticancer properties. However, the precise mechanisms by which sesamin prevents hepatic steatosis are not well understood. This study aimed to explore the molecular mechanisms by which sesamin may improve lipid metabolism dysregulation. A in vitro hepatic steatosis model was established by exposing HepG2 cells to palmitate sodium. The results showed that sesamin effectively mitigated lipotoxicity and reduced reactive oxygen species production. Additionally, sesamin suppressed lipid accumulation by regulating key factors involved in lipogenesis and lipolysis, such as fatty acid synthase (FASN), sterol regulatory element-binding protein 1c (SREBP-1c), forkhead box protein O-1, and adipose triglyceride lipase. Molecular docking results indicated that sesamin could bind to estrogen receptor α (ERα) and reduce FASN and SREBP-1c expression via the Ca2+/calmodulin-dependent protein kinase kinase β (CaMKKβ)/AMP-activated protein kinase (AMPK) signaling pathway. Sesamin attenuated palmitate-induced lipotoxicity and regulated hepatic lipid metabolism in HepG2 cells by activating the ERα/CaMKKβ/AMPK signaling pathway. These findings suggest that sesamin can improve lipid metabolism disorders and is a promising candidate for treating hepatic steatosis.
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Affiliation(s)
- Thi Hoa Pham
- College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea; Molecular Microbiology Lab, Institute of Biotechnology, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Gi Ho Lee
- College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea
| | - Sun Woo Jin
- College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea
| | - Seung Yeon Lee
- College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea
| | - Eun Hee Han
- Drug & Disease Target Research Team, Division of Bioconvergence Analysis, Korea Basic Science Institute (KBSI), Cheongju, Republic of Korea
| | - Nam Doo Kim
- VORONOI BIO Inc., Incheon, Republic of Korea
| | - Chul Yung Choi
- Department of Biomedical Science, College of Natural Science, Chosun University, Gwangju, Republic of Korea
| | - Gil-Saeng Jeong
- College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea
| | - Sang Ki Lee
- Department of Sport Science, College of Natural Science, Chungnam National University, Daejeon, Korea
| | - Hyung Sik Kim
- School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea.
| | - Hye Gwang Jeong
- College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea.
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12
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Pyo JH, Lee SY, Lee IJ, Kim SM, Kim JW. Beneficial Role of Multi-Disciplinary Treatment for Anaplastic Thyroid Cancer with Initial Distant Metastasis. Int J Radiat Oncol Biol Phys 2023; 117:e616-e617. [PMID: 37785850 DOI: 10.1016/j.ijrobp.2023.06.1996] [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) Anaplastic thyroid cancer (ATC) is a rare, highly aggressive tumor, with median survival around 5 months. Approximately half of the ATC patients presents with distant metastases at diagnosis, showing even more devastating prognosis, yet no outcome analysis had been reported. In this study, we aim to evaluate the clinical outcome of M1 ATC patients, and to define the group of patients who would benefit from local treatment based on multi-disciplinary approach. MATERIALS/METHODS A total of 133 histology-confirmed ATC patients underwent protocol-based multidisciplinary treatment including surgery and chemoradiotherapy (CRT) between May 2016 and January 2022. Patients received intensity-modulated radiotherapy of 30 fractions concurrently with paclitaxel on days 1, 8 and 15 every 4 weeks, and lenvatinib was added upon progression. After 18 fractions of CRT, interim response analysis using modified RECIST was conducted for adaptive treatment planning. We reviewed 58 patients with distant metastasis at diagnosis (stage IVC). Overall survival (OS) and progression-free survival (PFS) were measured from the day of diagnosis. RESULTS Most common metastatic site was lung (91.4%), followed by bone (31.0%) and brain (5.2%). Lenvatinib was added for 35 patients after any sign of progression. Fourteen patients received upfront surgery (16 debulking and 5 total) followed by adjuvant CRT in 16 patients. Thirty-one patients received upfront CRT with 2 patients receiving total resection after sufficient down-staging. Six (10%) patients could not complete radiotherapy but continued receiving systemic treatment. The median follow-up was 5.9 months. The median and 1-year OS were 6.2 months and 20.5%, and PFS were 3.7 months and 3.5%. Total RT dose over 60 Gy significantly improved median OS (7.5 vs 4.1 months, p = 0.012) and median PFS (4.4 vs 3.0, p = 0.010). Patients with less than 10 initial metastatic tumors showed better median OS (9.1 vs 4.6 months, p = 0.002) but not PFS (5.1 vs 3.6, p = 0.485). At interim analysis, early response (CR, PR and SD) of primary tumor was not associated with survival, while progression of distant metastases showed significantly worse median OS (9.8 vs 4.6 months, p = 0.001). More than 10 metastatic tumors (HR 2.73, 95% CI 1.32-5.66) and stable metastasis at interim analysis (HR 2.39, 95% CI 1.04-5.48) remained as significant factor in the multivariable cox regression analysis. Median OS and PFS of patients with less than 10 metastases showing no progression at interim analysis were 9.1 months, and 5.1 months. CONCLUSION Local treatment combined with chemotherapy for M1 ATC patients showed outcome comparable to those of non-metastatic ATC results. Active local treatment should be considered especially for patients with less than 10 metastases, and patients without distant progression in early response evaluation.
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Affiliation(s)
- J H Pyo
- Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - S Y Lee
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - I J Lee
- Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - S M Kim
- Department of Surgery, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - J W Kim
- Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
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Min JH, Sohn SY, Lee SY, Seo SH, Kim SY, Park B, Kim SI, Joo IS. Neutrophil-to-lymphocyte ratio is an independent predictor for neurological disability in patients with idiopathic transverse myelitis. BMC Neurol 2023; 23:336. [PMID: 37749508 PMCID: PMC10518920 DOI: 10.1186/s12883-023-03384-3] [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: 03/13/2023] [Accepted: 09/11/2023] [Indexed: 09/27/2023] Open
Abstract
INTRODUCTION The neutrophil-to-lymphocyte ratio (NLR) has been found to be useful in the prognostication of immune-mediated neurological disorders because it roughly reflects the systemic innate immune response compared to the adaptive immune response. However, studies on the validity of NLR in demyelinating disorders of the central nervous system have shown conflicting results. Therefore, we aimed to investigate NLR in the idiopathic transverse myelitis (ITM) cohort. METHODS We retrospectively analyzed the cohort data of patients with ITM between January 2006 and February 2020. The medical data of all patients with myelitis were reviewed to exclude patients with disease-associated myelopathy according to predefined exclusion criteria. The relationship between the natural log-transformed NLR (lnNLR) and the clinical, paraclinical, and imaging data was evaluated. Factors associated with neurological disability were analyzed using a linear mixed-effects model. Predictive factors for moderate-to-severe neurological disability (Expanded Disability Status Scale [EDSS] score ≥ 4) were investigated. RESULTS A total of 124 participants were included in the analysis. The lnNLR correlated with EDSS and lesion length. Linear mixed-effects analysis showed that age, lesion length, and lnNLR were independently associated with neurological disabilities. Multivariable logistic regression revealed that lnNLR (odds ratio [OR] = 4.266, 95% confidence interval [CI] = 1.220-14.912, p = 0.023) and lesion length (OR = 1.848, 95% CI = 1.249-2.734, p = 0.002) were independent predictive factors of the worst neurological disability. CONCLUSION NLR may be used as an independent prognostic factor for predicting poor neurological outcomes in patients with ITM.
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Affiliation(s)
- Je Hong Min
- Department of Neurology, Ajou University School of Medicine, Ajou University Medical Center, 164, World Cup-Ro, Yeongtong-Gu, Suwon, Republic of Korea
| | - Sung-Yeon Sohn
- Department of Neurology, Ajou University School of Medicine, Ajou University Medical Center, 164, World Cup-Ro, Yeongtong-Gu, Suwon, Republic of Korea
| | - Seung Yeon Lee
- Ajou University School of Medicine, Suwon, Republic of Korea
| | - Sang Hyun Seo
- Ajou University School of Medicine, Suwon, Republic of Korea
| | - Shin Yeop Kim
- Department of Neurology, Ajou University School of Medicine, Ajou University Medical Center, 164, World Cup-Ro, Yeongtong-Gu, Suwon, Republic of Korea
| | - Bumhee Park
- Department of Biomedical Informatics, Ajou University School of Medicine, Suwon, Republic of Korea
- Office of Biostatistics, Medical Research Collaborating Center, Ajou Research Institute for Innovative Medicine, Ajou University Medical Center, Suwon, Republic of Korea
| | - Seung Il Kim
- Office of Biostatistics, Medical Research Collaborating Center, Ajou Research Institute for Innovative Medicine, Ajou University Medical Center, Suwon, Republic of Korea
| | - In Soo Joo
- Department of Neurology, Ajou University School of Medicine, Ajou University Medical Center, 164, World Cup-Ro, Yeongtong-Gu, Suwon, Republic of Korea.
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14
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Shin HH, Jeong J, Nam Y, Lee KS, Yeon GJ, Lee H, Lee SY, Park S, Park H, Lee JY, Kim ZH. Vibrationally Hot Reactants in a Plasmon-Assisted Chemical Reaction. J Am Chem Soc 2023. [PMID: 37220278 DOI: 10.1021/jacs.3c02681] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Recent studies on plasmon-assisted chemical reactions postulate that the hot electrons of plasmon-excited nanostructures may induce a non-thermal vibrational activation of metal-bound reactants. However, the postulate has not been fully validated at the level of molecular quantum states. We directly and quantitatively prove that such activation occurs on plasmon-excited nanostructures: The anti-Stokes Raman spectra of reactants undergoing a plasmon-assisted reaction reveal that a particular vibrational mode of the reactant is selectively excited, such that the reactants possess >10 times more energy in the mode than is expected from the fully thermalized molecules at the given local temperature. Furthermore, a significant portion (∼20%) of the excited reactant is in vibrational overtone states with energies exceeding 0.5 eV. Such mode-selective multi-quantum excitation could be fully modeled by the resonant electron-molecule scattering theory. Such observations suggest that the vibrationally hot reactants are created by non-thermal hot electrons, not by thermally heated electrons or phonons of metals. The result validates the mechanism of plasmon-assisted chemical reactions and further offers a new method to explore the vibrational reaction control on metal surfaces.
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Affiliation(s)
- Hyun-Hang Shin
- Department of Chemistry, Seoul National University; Gwanak-gu, Seoul 08826, Republic of Korea
| | - Jaeyoung Jeong
- Department of Chemistry, Seoul National University; Gwanak-gu, Seoul 08826, Republic of Korea
| | - Yeonsig Nam
- Department of Chemistry, Sungkyunkwan University, Gyeonggi-do, Suwon 16419, Republic of Korea
| | - Kang Sup Lee
- Department of Chemistry, Seoul National University; Gwanak-gu, Seoul 08826, Republic of Korea
| | - Gyu Jin Yeon
- Department of Chemistry, Seoul National University; Gwanak-gu, Seoul 08826, Republic of Korea
| | - Hankyul Lee
- Department of Chemistry, Seoul National University; Gwanak-gu, Seoul 08826, Republic of Korea
| | - Seung Yeon Lee
- Department of Chemistry, Seoul National University; Gwanak-gu, Seoul 08826, Republic of Korea
| | - Sangwon Park
- Department of Chemistry, Seoul National University; Gwanak-gu, Seoul 08826, Republic of Korea
| | - Hyungjun Park
- Department of Chemistry, Seoul National University; Gwanak-gu, Seoul 08826, Republic of Korea
| | - Jin Yong Lee
- Department of Chemistry, Sungkyunkwan University, Gyeonggi-do, Suwon 16419, Republic of Korea
| | - Zee Hwan Kim
- Department of Chemistry, Seoul National University; Gwanak-gu, Seoul 08826, Republic of Korea
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15
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Lee KH, Lee SY, Lim B, Park K. A Case of Solitary Fibrous Tumor on the Foot. Ann Dermatol 2023; 35:S176-S177. [PMID: 37853904 PMCID: PMC10608379 DOI: 10.5021/ad.21b.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 10/19/2021] [Accepted: 11/05/2021] [Indexed: 10/20/2023] Open
Affiliation(s)
- Ki Hun Lee
- Department of Dermatology, Wonkwang University School of Medicine, Iksan, Korea
| | - Seung Yeon Lee
- Department of Dermatology, Wonkwang University School of Medicine, Iksan, Korea
| | - Bora Lim
- Department of Dermatology, Wonkwang University School of Medicine, Iksan, Korea
| | - Kun Park
- Department of Dermatology, Wonkwang University School of Medicine, Iksan, Korea.
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Lynn SE, Lungu T, Lee SY. Unpredictable fasting transiently alters corticosterone and feeding behavior but not body mass or later HPA axis function in zebra finches (Taeniopygia guttata). Comp Biochem Physiol A Mol Integr Physiol 2023; 281:111434. [PMID: 37068728 DOI: 10.1016/j.cbpa.2023.111434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 04/14/2023] [Accepted: 04/14/2023] [Indexed: 04/19/2023]
Abstract
The hypothalamic-pituitary-adrenal (HPA) axis is commonly activated in response to unpredictable conditions, including unstable or inadequate food supply. Extended exposure to unpredictable food resources can alter HPA axis function, with the potential for negative fitness consequences. We addressed the interrelationships of unpredictable food resources, HPA axis activity, and food intake in adult and juvenile zebra finches (Taeniopygia guttata). Finches exposed to prolonged periods of unpredictable food elevate corticosterone (the primary avian glucocorticoid) when food is unavailable; however, whether they experience chronic elevation in baseline corticosterone during periods of unpredictability, even when food is available, is unclear. We subjected adults and juveniles to an extended period of temporally unpredictable food (consisting of a random daily fast) or predictable food supply. We investigated baseline corticosterone under fed conditions and in response to an acute fast (mimicking the daily fasting periods in the unpredictable treatment), and assessed differences in body mass, food intake, and corticosterone responses to restraint. Regardless of sex and age, individuals in both treatment groups elevated corticosterone when fasted, and baseline corticosterone under fed conditions was indistinguishable between groups. Thus, corticosterone levels were not persistently elevated in the unpredictably fed group. Treatment groups did not differ in body mass or corticosterone responses to restraint, but unpredictably fed birds consumed food more rapidly when food was available. Our findings suggest that the unpredictably fed birds experienced repeated, moderate elevations in corticosterone. Such elevations may aid birds in coping with unpredictable food sources, in part by activating compensatory changes in foraging behavior.
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Affiliation(s)
- Sharon E Lynn
- The College of Wooster, Department of Biology, 931 College Mall, Wooster, OH 44691, USA.
| | - Tudor Lungu
- The College of Wooster, Department of Biology, 931 College Mall, Wooster, OH 44691, USA
| | - Seung Yeon Lee
- The College of Wooster, Department of Biology, 931 College Mall, Wooster, OH 44691, USA
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17
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Lee BJ, Lee U, Ryu SH, Han S, Lee SY, Lee JS, Ju A, Chang S, Lee SH, Kim SH, Ho WK. L-type Ca 2+ channels mediate regulation of glutamate release by subthreshold potential changes. Proc Natl Acad Sci U S A 2023; 120:e2220649120. [PMID: 36920925 PMCID: PMC10041175 DOI: 10.1073/pnas.2220649120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023] Open
Abstract
Subthreshold depolarization enhances neurotransmitter release evoked by action potentials and plays a key role in modulating synaptic transmission by combining analog and digital signals. This process is known to be Ca2+ dependent. However, the underlying mechanism of how small changes in basal Ca2+ caused by subthreshold depolarization can regulate transmitter release triggered by a large increase in local Ca2+ is not well understood. This study aimed to investigate the source and signaling mechanisms of Ca2+ that couple subthreshold depolarization with the enhancement of glutamate release in hippocampal cultures and CA3 pyramidal neurons. Subthreshold depolarization increased presynaptic Ca2+ levels, the frequency of spontaneous release, and the amplitude of evoked release, all of which were abolished by blocking L-type Ca2+ channels. A high concentration of intracellular Ca2+ buffer or blockade of calmodulin abolished depolarization-induced increases in transmitter release. Estimation of the readily releasable pool size using hypertonic sucrose showed depolarization-induced increases in readily releasable pool size, and this increase was abolished by the blockade of calmodulin. Our results provide mechanistic insights into the modulation of transmitter release by subthreshold potential change and highlight the role of L-type Ca2+ channels in coupling subthreshold depolarization to the activation of Ca2+-dependent signaling molecules that regulate transmitter release.
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Affiliation(s)
- Byoung Ju Lee
- Department of Physiology and Biomedical Sciences, Seoul National University College of Medicine, Seoul 03080, Korea
- Neuroscience Research Institute, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Unghwi Lee
- Department of Physiology and Biomedical Sciences, Seoul National University College of Medicine, Seoul 03080, Korea
- Neuroscience Research Institute, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Seung Hyun Ryu
- Interdisciplinary Program in Neuroscience, Seoul National University College of Natural Science, Seoul 08826, Korea
| | - Sukmin Han
- Department of Neuroscience, Graduate School, Kyung Hee University, Seoul 02447, Korea
| | - Seung Yeon Lee
- Department of Physiology and Biomedical Sciences, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Jae Sung Lee
- Department of Physiology and Biomedical Sciences, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Anes Ju
- Department of Physiology and Biomedical Sciences, Seoul National University College of Medicine, Seoul 03080, Korea
- Neuroscience Research Institute, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Sunghoe Chang
- Department of Physiology and Biomedical Sciences, Seoul National University College of Medicine, Seoul 03080, Korea
- Neuroscience Research Institute, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Suk-Ho Lee
- Department of Physiology and Biomedical Sciences, Seoul National University College of Medicine, Seoul 03080, Korea
- Neuroscience Research Institute, Seoul National University College of Medicine, Seoul 03080, Korea
- Department of Brain and Cognitive Science, Seoul National University College of Natural Science, Seoul 08826, Korea
| | - Sung Hyun Kim
- Department of Neuroscience, Graduate School, Kyung Hee University, Seoul 02447, Korea
- Department of Physiology, School of Medicine, Kyung Hee University, Seoul 02447, Korea
| | - Won-Kyung Ho
- Department of Physiology and Biomedical Sciences, Seoul National University College of Medicine, Seoul 03080, Korea
- Neuroscience Research Institute, Seoul National University College of Medicine, Seoul 03080, Korea
- Department of Brain and Cognitive Science, Seoul National University College of Natural Science, Seoul 08826, Korea
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Lee SY, Lee Y, Choi N, Kim HN, Kim B, Sung JH. Development of Gut-Mucus Chip for Intestinal Absorption Study. BioChip J 2023. [DOI: 10.1007/s13206-023-00097-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
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19
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Hwang J, Lee SY, Jo CH. Degenerative tendon matrix induces tenogenic differentiation of mesenchymal stem cells. J Exp Orthop 2023; 10:15. [PMID: 36786947 PMCID: PMC9928997 DOI: 10.1186/s40634-023-00581-4] [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] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 01/23/2023] [Indexed: 02/15/2023] Open
Abstract
PURPOSE Mesenchymal stem cells (MSCs) react dynamically with the surrounding microenvironment to promote tissue-specific differentiation and hence increase targeted regenerative capacity. Extracellular matrix (ECM) would be the first microenvironment to interact with MSCs injected into the tissue lesion. However, degenerative tissues would have different characteristics of ECM in comparison with healthy tissues. Therefore, the influence of degenerative ECM on tissue-specific differentiation of MSCs and the formation of matrix composition need to be considered for the sophisticated therapeutic application of stem cells for tissue regeneration. METHODS Human degenerative tendon tissues were obtained from patients undergoing rotator cuff repair and finely minced into 2 ~ 3 mm fragments. Different amounts of tendon matrix (0.005 g, 0.01 g, 0.025 g, 0.05 g, 0.1 g, 0.25 g, 0.5 g, 1 g, and 2 g) were co-cultured with bone marrow MSCs (BM MSCs) for 7 days. Six tendon-related markers, scleraxis, tenomodulin, collagen type I and III, decorin, and tenascin-C, osteogenic marker, alkaline phosphatase (ALP), and chondrogenic marker, aggrecan (ACAN), were analyzed by qRT-PCR. Cell viability and senescence-associated beta-galactosidase assays were performed. The connective tissue growth factor was used as a positive control. RESULTS The expressions of six tendon-related markers were significantly upregulated until the amount of tendon matrix exceeded 0.5 g, the point where the mRNA expressions of all six genes analyzed started to decrease. The tendon matrix exerted an inhibitory effect on ACAN expression but had a negligible effect on ALP expression. Cell viability did not change significantly over the culture period. The amount of tendon matrix exceeding 0.01 g significantly increased the SA-βgal activity of BM MSCs. CONCLUSION This study successfully demonstrated tendon ECM-stimulated tenogenesis of BM MSCs through an indirect co-culture system without the use of exogenous growth factors and the alteration of cellular viability. In contrast to the initial hypothesis, the tenogenesis of BM MSCs induced with the degenerative tendon matrix accompanied cellular senescence.
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Affiliation(s)
- Joongwon Hwang
- grid.31501.360000 0004 0470 5905Department of Translational Medicine, College of Medicine, Seoul National University, Daehak-Ro 103, Jongno-Gu, Seoul, 03080 South Korea ,grid.412479.dDepartment of Orthopedic Surgery, College of Medicine, SMG-SNU Boramae Medical Center, Seoul National University, 20 Boramae-Ro 5-Gil, Dongjak-Gu, Seoul, 07061 South Korea
| | - Seung Yeon Lee
- grid.412479.dDepartment of Orthopedic Surgery, College of Medicine, SMG-SNU Boramae Medical Center, Seoul National University, 20 Boramae-Ro 5-Gil, Dongjak-Gu, Seoul, 07061 South Korea
| | - Chris Hyunchul Jo
- Department of Translational Medicine, College of Medicine, Seoul National University, Daehak-Ro 103, Jongno-Gu, Seoul, 03080, South Korea. .,Department of Orthopedic Surgery, College of Medicine, SMG-SNU Boramae Medical Center, Seoul National University, 20 Boramae-Ro 5-Gil, Dongjak-Gu, Seoul, 07061, South Korea.
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20
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Choi JI, Kweon HY, Lee YL, Lee JH, Lee SY. Efficacy of Silkworm Pupae Extract on Muscle Strength and Mass in Middle-Aged and Older Individuals: A Randomized, Double-Blind, Placebo-Controlled Trial. J Nutr Health Aging 2023; 27:578-585. [PMID: 37498105 DOI: 10.1007/s12603-023-1942-9] [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: 05/13/2023] [Accepted: 06/06/2023] [Indexed: 07/28/2023]
Abstract
OBJECTIVES We investigated the efficacy and safety of silkworm pupae extract (SWP) consumption for 12 weeks on muscle mass and strength in middle-aged and older individuals with relatively low skeletal muscle mass who do regular low-intensity exercise. DESIGN A randomized double-blinded placebo-controlled trial. PARTICIPANTS The study was conducted with 54 participants with relatively low skeletal muscle mass (SMM) (64.4 ± 6.1 years; body mass index, 23.8 ± 2.4 kg/m2). INTERVENTION AND MEASUREMENTS Participants were randomly assigned to one of two groups: 1000 mg of SWP/day plus regular exercise (SWP group, n=27) or placebo plus regular exercise (placebo group, n=27). All participants were required to engage in 30-60 minutes/day of walking for ≥3 days/week for 12 weeks. The primary outcome was knee extension/flexion strength (Nm), measured at the velocity of 60°/s. Secondary outcomes included body composition, biomarkers (creatine kinase and creatinine), handgrip strength, and quality of life questionnaire. RESULTS Both the intention-to-treat (ITT) and per-protocol (PP) analyses revealed no significant impact of SWP on knee strength compared to the placebo group over 12 weeks. On the other hand, the SWP group had significantly greater increases in right-handgrip strength by 1.94 kg (95% CI: 0.08-3.79; p = 0.041) and left-handgrip strength by 1.83 kg (0.25-3.41; p = 0.024) compared to the placebo group in the ITT population, after 12 weeks. Moreover, in the PP population, the SWP group revealed an even greater increase in right-handgrip strength by 2.07 kg (0.15-3. 98; p = 0.035) and left-handgrip strength by 2.21 kg (0.60-3.83; p = 0.008) for the 12-week period. However, this study resulted in a failure to detect significant differences in the body composition, biomarkers, quality of life questionnaire, physical activity, and caloric intake between the groups. None of the participants in the SWP group experienced any significant adverse events. In the placebo group, two participants experienced urticaria and allergic side effects, leading to their withdrawal from the study and two exhibited elevated levels of liver enzyme and increased diastolic blood pressure, respectively at 12 weeks. CONCLUSION SWP, in addition to low-intensity exercise, may enhance handgrip strengths in middle-aged and older adults with relatively lower SMM. Future studies need to use a large sample size over longer periods to validate our findings. This trial was registered at clinicaltrials.gov as NCT04994054.
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Affiliation(s)
- J I Choi
- Sang Yeoup Lee, Family Medicine Clinic, Pusan National University Yangsan Hospital, Yangsan 50612, Republic of Korea, Telephone: +82-55-390-1442, E-mail: , Fax: +82-51-510-8125
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21
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Rajabalee N, Kozlowska K, Lee SY, Savage B, Hawkes C, Siciliano D, Porges SW, Pick S, Torbey S. Neuromodulation Using Computer-Altered Music to Treat a Ten-Year-Old Child Unresponsive to Standard Interventions for Functional Neurological Disorder. Harv Rev Psychiatry 2022; 30:303-316. [PMID: 35616609 PMCID: PMC9470039 DOI: 10.1097/hrp.0000000000000341] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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22
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Pham TH, Lee GH, Jin SW, Lee SY, Han EH, Kim ND, Jeong HG. Puerarin attenuates hepatic steatosis via G‐protein‐coupled estrogen receptor‐mediated calcium and
SIRT1
signaling pathways. Phytother Res 2022; 36:3601-3618. [DOI: 10.1002/ptr.7526] [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] [Received: 09/26/2021] [Revised: 03/27/2022] [Accepted: 04/07/2022] [Indexed: 11/06/2022]
Affiliation(s)
- Thi Hoa Pham
- College of Pharmacy Chungnam National University Daejeon Republic of Korea
- Molecular Microbiology Lab, Institute of Biotechnology Vietnam Academy of Science and Technology Hanoi Vietnam
| | - Gi Ho Lee
- College of Pharmacy Chungnam National University Daejeon Republic of Korea
| | - Sun Woo Jin
- College of Pharmacy Chungnam National University Daejeon Republic of Korea
| | - Seung Yeon Lee
- College of Pharmacy Chungnam National University Daejeon Republic of Korea
| | - Eun Hee Han
- Drug & Disease Target Research Team, Division of Bioconvergence Analysis Korea Basic Science Institute (KBSI) Cheongju Republic of Korea
| | | | - Hye Gwang Jeong
- College of Pharmacy Chungnam National University Daejeon Republic of Korea
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23
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Lee SY, Lee JW. 3D Spheroid Cultures of Stem Cells and Exosome Applications for Cartilage Repair. Life (Basel) 2022; 12:life12070939. [PMID: 35888029 PMCID: PMC9317836 DOI: 10.3390/life12070939] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 06/20/2022] [Accepted: 06/21/2022] [Indexed: 11/16/2022]
Abstract
Cartilage is a connective tissue that constitutes the structure of the body and consists of chondrocytes that produce considerable collagenous extracellular matrix and plentiful ground substances, such as proteoglycan and elastin fibers. Self-repair is difficult when the cartilage is damaged because of insufficient blood supply, low cellularity, and limited progenitor cell numbers. Therefore, three-dimensional (3D) culture systems, including pellet culture, hanging droplets, liquid overlays, self-injury, and spinner culture, have attracted attention. In particular, 3D spheroid culture strategies can enhance the yield of exosome production of mesenchymal stem cells (MSCs) when compared to two-dimensional culture, and can improve cellular restorative function by enhancing the paracrine effects of MSCs. Exosomes are membrane-bound extracellular vesicles, which are intercellular communication systems that carry RNAs and proteins. Information transfer affects the phenotype of recipient cells. MSC-derived exosomes can facilitate cartilage repair by promoting chondrogenic differentiation and proliferation. In this article, we reviewed recent major advances in the application of 3D culture techniques, cartilage regeneration with stem cells using 3D spheroid culture system, the effect of exosomes on chondrogenic differentiation, and chondrogenic-specific markers related to stem cell derived exosomes. Furthermore, the utilization of MSC-derived exosomes to enhance chondrogenic differentiation for osteoarthritis is discussed. If more mechanistic studies at the molecular level are conducted, MSC-spheroid-derived exosomes will supply a better therapeutic option to improve osteoarthritis.
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Affiliation(s)
- Seung Yeon Lee
- Department of Molecular Medicine, College of Medicine, Gachon University, 155, Gaetbeol-ro, Yeonsu-ku, Incheon 21999, Korea;
| | - Jin Woo Lee
- Department of Molecular Medicine, College of Medicine, Gachon University, 155, Gaetbeol-ro, Yeonsu-ku, Incheon 21999, Korea;
- Department of Health Sciences and Technology, GAIHST, Gachon University, 155, Gaetbeol-ro, Yeonsu-ku, Incheon 21999, Korea
- Correspondence: ; Tel.: +82-32-899-6516; Fax: +82-32-899-6039
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24
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Lee SY, Song KJ, Lim CS, Chai YJ, Lee SY, Lee SGW. Risk factors for the deterioration of patients with mild COVID-19 admitted to a COVID-19 community treatment center. J Korean Med Assoc 2022. [DOI: 10.5124/jkma.2022.65.6.377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Background: The rapid increase in the number of coronavirus disease (COVID-19) patients led to the operation of COVID-19 facilities for patients with mild COVID-19 in South Korea. We analyzed the correlation and effect of risk factors associated with the worsening of patients with mild COVID-19 leading to their transfer from a community treatment center to a hospital.Methods: This retrospective cohort observational study included 1,208 COVID-19 patients with mild symptoms who were admitted to the Namsan Community Treatment Center between June 2020 and January 2021. A chi-square test was performed to examine the differences in the transfer rate by age, sex, nationality, presence of symptoms at admission, and season, and a multivariable logistic regression analysis was performed to examine the association of variables to the hospitalization rate.Results: Of the 1,208 patients, 212 (17.5%) were transferred to a hospital due to clinical deterioration. Increasing odds of hospital transfer were associated significantly with higher age and presentation in autumn, whereas sex and symptomatic illness at admission did not show a statistically significant association.Conclusion: The findings indicate the importance of the initial risk classification of COVID-19 patients based on thorough assessment and close monitoring, timely allocation of appropriate resources to high-risk groups that are likely to develop severe disease, and reduction of medical resource wastage and limiting of administrative force to ensure that patients receive the best treatment.
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25
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Cho SJ, Lee U, Oh YR, Seo HY, Lee SY, Cho YJ, Lee HW, Sohn JH. Development of a Seoul-Type Housing Service Model for People With a Mental Illness. Psychiatry Investig 2022; 19:403-410. [PMID: 35644953 PMCID: PMC9233954 DOI: 10.30773/pi.2021.0318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Accepted: 02/21/2022] [Indexed: 11/27/2022] Open
Abstract
OBJECTIVE To establish and to promote the qualitative development of a housing service model in South Korea. METHODS The questionnaire was collected through the housing needs survey and the focus group interview on the mental health professions. We enrolled 365 subjects from 63 places (community conversion facilities, cohabitation, cohabitation families, hospitals, psychiatric nursing homes) to answer the questionnaires. RESULTS The survey result confirms the needs of people with a mental illness to be self-reliant, but it shows that the economic vulnerability is a hindrance. In addition, the most necessary factor for self-reliant living is to provide services that support daily living. Therefore, the study points out that a system that guarantees self-reliance must be added in order for the housing services to be distributed throughout local communities for the people with mental illness. CONCLUSION The study proposes the Seoul-type housing services model to replace the housing services that functions in a fragmented manner with the provision of an integrated services through a unified channel by establishing a housing support center (tentative name). This will ultimately help people with a mental illness to live a healthy life that meets their needs as community members.
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Affiliation(s)
- Sung Joon Cho
- Department of Psychiatry, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.,Workplace Mental Health Institute, Kangbuk Samsung Hospital, Seoul, Republic of Korea
| | - Ung Lee
- Department of Psychiatry, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - You Ra Oh
- Yonsei University, Graduate School of Social Welfare, Seoul, Republic of Korea
| | - Hwo Yeon Seo
- Institute of Public Health and Medical Service, Seoul National University Hospital, Seoul, Republic of Korea.,Jongno-gu Community Mental Health Welfare Center, Seoul, Republic of Korea
| | - Seung Yeon Lee
- Seoul Mental Health Welfare Center, Seoul, Republic of Korea
| | - Yeon Jung Cho
- Seoul Mental Health Welfare Center, Seoul, Republic of Korea
| | - Hae Woo Lee
- Seoul Mental Health Welfare Center, Seoul, Republic of Korea.,Department of Psychiatry, Seoul Medical Center, Seoul, Republic of Korea
| | - Jee Hoon Sohn
- Department of Psychiatry, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
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26
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Lee SY, Byun HJ, Choi H, Won JI, Han J, Park S, Kim D, Sung JH. Development of a Pumpless Microfluidic System to Study the Interaction between Gut Microbes and Intestinal Epithelial Cells. BIOTECHNOL BIOPROC E 2022. [DOI: 10.1007/s12257-021-0268-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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27
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Kang SY, Choi MG, Wei ET, Selescu T, Lee SY, Kim JC, Chung BY, Park CW, Kim HO. TRPM8 agonist (cryosim-1) gel for scalp itch: A randomized, vehicle controlled clinical trial. J Eur Acad Dermatol Venereol 2022; 36:e588-e589. [PMID: 35293031 DOI: 10.1111/jdv.18080] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- S Y Kang
- Department of Dermatology, Kangnam Sacred Heart Hospital, Hallym University, Seoul, Korea
| | - M G Choi
- Department of Computer Science and Engineering, Kwangwoon University, Seoul, Korea
| | - E T Wei
- School of Public Health, University of California, Berkeley, CA, 94720, USA
| | - T Selescu
- Department of Anatomy, Physiology and Biophysics, Faculty of Biology, University of Bucharest, Bucuresti, Romania
| | - S Y Lee
- Department of Dermatology, Kangnam Sacred Heart Hospital, Hallym University, Seoul, Korea
| | - J C Kim
- Department of Dermatology, Kangnam Sacred Heart Hospital, Hallym University, Seoul, Korea
| | - B Y Chung
- Department of Dermatology, Kangnam Sacred Heart Hospital, Hallym University, Seoul, Korea
| | - C W Park
- Department of Dermatology, Kangnam Sacred Heart Hospital, Hallym University, Seoul, Korea
| | - H O Kim
- Department of Dermatology, Kangnam Sacred Heart Hospital, Hallym University, Seoul, Korea
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28
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Lee GH, Lee SY, Zheng C, Pham HT, Kim CY, Kim MY, Han EH, Hwang YP, Jeong HG. Effect of 3-caffeoyl, 4-dihydrocaffeoylquinic acid from Salicornia herbacea on endothelial nitric oxide synthase activation via calcium signaling pathway. Toxicol Res 2022; 38:355-364. [DOI: 10.1007/s43188-022-00121-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 12/26/2021] [Accepted: 01/06/2022] [Indexed: 11/29/2022] Open
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29
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Choi WG, Choi W, Oh TJ, Cha HN, Hwang I, Lee YK, Lee SY, Shin H, Lim A, Ryu D, Suh JM, Park SY, Choi SH, Kim H. Inhibiting serotonin signaling through HTR2B in visceral adipose tissue improves obesity-related insulin resistance. J Clin Invest 2021; 131:145331. [PMID: 34618686 DOI: 10.1172/jci145331] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 10/05/2021] [Indexed: 12/28/2022] Open
Abstract
Insulin resistance is a cornerstone of obesity-related complications such as type 2 diabetes, metabolic syndrome, and nonalcoholic fatty liver disease. A high rate of lipolysis is known to be associated with insulin resistance, and inhibiting adipose tissue lipolysis improves obesity-related insulin resistance. Here, we demonstrate that inhibition of serotonin (5-hydroxytryptamine [5-HT]) signaling through serotonin receptor 2B (HTR2B) in adipose tissues ameliorates insulin resistance by reducing lipolysis in visceral adipocytes. Chronic high-fat diet (HFD) feeding increased Htr2b expression in epididymal white adipose tissue, resulting in increased HTR2B signaling in visceral white adipose tissue. Moreover, HTR2B expression in white adipose tissue was increased in obese humans and positively correlated with metabolic parameters. We further found that adipocyte-specific Htr2b-knockout mice are resistant to HFD-induced insulin resistance, visceral adipose tissue inflammation, and hepatic steatosis. Enhanced 5-HT signaling through HTR2B directly activated lipolysis through phosphorylation of hormone-sensitive lipase in visceral adipocytes. Moreover, treatment with a selective HTR2B antagonist attenuated HFD-induced insulin resistance, visceral adipose tissue inflammation, and hepatic steatosis. Thus, adipose HTR2B signaling could be a potential therapeutic target for treatment of obesity-related insulin resistance.
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Affiliation(s)
- Won Gun Choi
- Graduate School of Medical Science and Engineering, Biomedical Research Center, KAIST, Daejeon, South Korea
| | - Wonsuk Choi
- Graduate School of Medical Science and Engineering, Biomedical Research Center, KAIST, Daejeon, South Korea.,Department of Internal Medicine, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, South Korea
| | - Tae Jung Oh
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, South Korea
| | - Hye-Na Cha
- Department of Physiology, College of Medicine, Yeungnam University, Daegu, South Korea
| | - Inseon Hwang
- Graduate School of Medical Science and Engineering, Biomedical Research Center, KAIST, Daejeon, South Korea
| | - Yun Kyung Lee
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea
| | - Seung Yeon Lee
- Graduate School of Medical Science and Engineering, Biomedical Research Center, KAIST, Daejeon, South Korea
| | - Hyemi Shin
- Graduate School of Medical Science and Engineering, Biomedical Research Center, KAIST, Daejeon, South Korea
| | - Ajin Lim
- Graduate School of Medical Science and Engineering, Biomedical Research Center, KAIST, Daejeon, South Korea
| | - Dongryeol Ryu
- Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Suwon, South Korea
| | - Jae Myoung Suh
- Graduate School of Medical Science and Engineering, Biomedical Research Center, KAIST, Daejeon, South Korea
| | - So-Young Park
- Department of Physiology, College of Medicine, Yeungnam University, Daegu, South Korea
| | - Sung Hee Choi
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, South Korea.,Department of Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea
| | - Hail Kim
- Graduate School of Medical Science and Engineering, Biomedical Research Center, KAIST, Daejeon, South Korea
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30
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Kim JC, Lee SY, Kang SY, Kim HO, Park CW, Chung BY. Erythema annulare centrifugum induced by COVID-19 vaccination. Clin Exp Dermatol 2021; 47:591-592. [PMID: 34731529 PMCID: PMC8652630 DOI: 10.1111/ced.15002] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 10/27/2021] [Accepted: 11/01/2021] [Indexed: 12/19/2022]
Affiliation(s)
- J C Kim
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - S Y Lee
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - S Y Kang
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - H O Kim
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - C W Park
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - B Y Chung
- Department of Dermatology, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
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Lee SY, Kim D, Lee SH, Sung JH. Microtechnology-based in vitro models: Mimicking liver function and pathophysiology. APL Bioeng 2021; 5:041505. [PMID: 34703969 PMCID: PMC8520487 DOI: 10.1063/5.0061896] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 09/21/2021] [Indexed: 02/06/2023] Open
Abstract
The liver plays important roles in drug metabolism and homeostasis. The metabolism and biotransformation can not only affect the efficacy of drugs but also result in hepatotoxicity and drug-induced liver injury. Understanding the complex physiology of the liver and the pathogenetic mechanisms of liver diseases is essential for drug development. Conventional in vitro models have limitations in the ability to predict drug effects, due to the lack of physiological relevance. Recently, the liver-on-a-chip platform has been developed to reproduce the microarchitecture and in vivo environment of the liver. These efforts have improved the physiological relevance of the liver tissue used in the platform and have demonstrated its applicability to drug screening and disease models. In this review, we summarize the recent development of liver-on-a-chip models that closely mimic the in vivo liver environments and liver diseases.
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Affiliation(s)
- Seung Yeon Lee
- Department of Chemical Engineering, Hongik University, Seoul 04066, South Korea
| | - Donghyun Kim
- School of Electrical and Electronic Engineering, Yonsei University, Seoul 03722, South Korea
| | - Seung Hwan Lee
- Department of Bionano Engineering, Center for Bionano Intelligence Education and Research, Hanyang University, Ansan 15588, South Korea
| | - Jong Hwan Sung
- Department of Chemical Engineering, Hongik University, Seoul 04066, South Korea
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Lee BJ, Yang CH, Lee SY, Lee SH, Kim Y, Ho WK. Voltage-gated calcium channels contribute to spontaneous glutamate release directly via nanodomain coupling or indirectly via calmodulin. Prog Neurobiol 2021; 208:102182. [PMID: 34695543 DOI: 10.1016/j.pneurobio.2021.102182] [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: 08/09/2021] [Revised: 10/05/2021] [Accepted: 10/18/2021] [Indexed: 11/19/2022]
Abstract
Neurotransmitter release occurs either synchronously with action potentials (evoked release) or spontaneously (spontaneous release). Whether the molecular mechanisms underlying evoked and spontaneous release are identical, especially whether voltage-gated calcium channels (VGCCs) can trigger spontaneous events, is still a matter of debate in glutamatergic synapses. To elucidate this issue, we characterized the VGCC dependence of miniature excitatory postsynaptic currents (mEPSCs) in various synapses with different coupling distances between VGCCs and synaptic vesicles, known as a critical factor in evoked release. We found that most of the extracellular calcium-dependent mEPSCs were attributable to VGCCs in cultured autaptic hippocampal neurons and the mature calyx of Held where VGCCs and vesicles were tightly coupled. Among loosely coupled synapses, mEPSCs were not VGCC-dependent at immature calyx of Held and CA1 pyramidal neuron synapses, whereas VGCCs contribution was significant at CA3 pyramidal neuron synapses. Interestingly, the contribution of VGCCs to spontaneous glutamate release in CA3 pyramidal neurons was abolished by a calmodulin antagonist, calmidazolium. These data suggest that coupling distance between VGCCs and vesicles determines VGCC dependence of spontaneous release at tightly coupled synapses, yet VGCC contribution can be achieved indirectly at loosely coupled synapses.
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Affiliation(s)
- Byoung Ju Lee
- Department of Biomedical Sciences, Seoul National University College of Natural Science, Seoul, Republic of Korea; Department of Physiology, Seoul National University College of Natural Science, Seoul, Republic of Korea
| | - Che Ho Yang
- Department of Biomedical Sciences, Seoul National University College of Natural Science, Seoul, Republic of Korea; Department of Physiology, Seoul National University College of Natural Science, Seoul, Republic of Korea; Department of Brain and Cognitive Science, Seoul National University College of Natural Science, Seoul, Republic of Korea
| | - Seung Yeon Lee
- Department of Biomedical Sciences, Seoul National University College of Natural Science, Seoul, Republic of Korea; Department of Physiology, Seoul National University College of Natural Science, Seoul, Republic of Korea
| | - Suk-Ho Lee
- Department of Biomedical Sciences, Seoul National University College of Natural Science, Seoul, Republic of Korea; Department of Physiology, Seoul National University College of Natural Science, Seoul, Republic of Korea; Neuroscience Research Institute, Seoul National University College of Medicine, Republic of Korea; Department of Brain and Cognitive Science, Seoul National University College of Natural Science, Seoul, Republic of Korea
| | - Yujin Kim
- Department of Physiology, Seoul National University College of Natural Science, Seoul, Republic of Korea; Neuroscience Research Institute, Seoul National University College of Medicine, Republic of Korea; Department of Brain and Cognitive Science, Seoul National University College of Natural Science, Seoul, Republic of Korea.
| | - Won-Kyung Ho
- Department of Biomedical Sciences, Seoul National University College of Natural Science, Seoul, Republic of Korea; Department of Physiology, Seoul National University College of Natural Science, Seoul, Republic of Korea; Neuroscience Research Institute, Seoul National University College of Medicine, Republic of Korea; Department of Brain and Cognitive Science, Seoul National University College of Natural Science, Seoul, Republic of Korea.
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Affiliation(s)
- Ji Hoon Lee
- Department of Chemistry Chungnam National University Daejeon 34134 Republic of Korea
| | - Hyun Ji Seo
- Department of Chemistry Chungnam National University Daejeon 34134 Republic of Korea
| | - Seung Yeon Lee
- Department of Chemistry Chungnam National University Daejeon 34134 Republic of Korea
| | - Woo Kyung Cho
- Department of Chemistry Chungnam National University Daejeon 34134 Republic of Korea
| | - Kyung‐sun Son
- Department of Chemistry Chungnam National University Daejeon 34134 Republic of Korea
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Lee GH, Kim CY, Zheng C, Jin SW, Kim JY, Lee SY, Kim MY, Han EH, Hwang YP, Jeong HG. Rutaecarpine Increases Nitric Oxide Synthesis via eNOS Phosphorylation by TRPV1-Dependent CaMKII and CaMKKβ/AMPK Signaling Pathway in Human Endothelial Cells. Int J Mol Sci 2021; 22:ijms22179407. [PMID: 34502308 PMCID: PMC8431268 DOI: 10.3390/ijms22179407] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 08/26/2021] [Accepted: 08/27/2021] [Indexed: 12/20/2022] Open
Abstract
Rutaecarpine (RUT) is a bioactive alkaloid isolated from the fruit of Evodia rutaecarpa that exerts a cellular protective effect. However, its protective effects on endothelial cells and its mechanism of action are still unclear. In this study, we demonstrated the effects of RUT on nitric oxide (NO) synthesis via endothelial nitric oxide synthase (eNOS) phosphorylation in endothelial cells and the underlying molecular mechanisms. RUT treatment promoted NO generation by increasing eNOS phosphorylation. Additionally, RUT induced an increase in intracellular Ca2+ concentration and phosphorylation of Ca2+/calmodulin-dependent protein kinase kinase β (CaMKKβ), AMP-activated protein kinase (AMPK), and Ca2+/calmodulin-dependent kinase II (CaMKII). Inhibition of transient receptor potential vanilloid type 1 (TRPV1) attenuated RUT-induced intracellular Ca2+ concentration and phosphorylation of CaMKII, CaMKKβ, AMPK, and eNOS. Treatment with KN-62 (a CaMKII inhibitor), Compound C (an AMPK inhibitor), and STO-609 (a CaMKKβ inhibitor) suppressed RUT-induced eNOS phosphorylation and NO generation. Interestingly, RUT attenuated the expression of ICAM-1 and VCAM-1 induced by TNF-α and inhibited the inflammation-related NF-κB signaling pathway. Taken together, these results suggest that RUT promotes NO synthesis and eNOS phosphorylation via the Ca2+/CaMKII and CaM/CaMKKβ/AMPK signaling pathways through TRPV1. These findings provide evidence that RUT prevents endothelial dysfunction and benefit cardiovascular health.
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Affiliation(s)
- Gi Ho Lee
- College of Pharmacy, Chungnam National University, Daejeon 34134, Korea; (G.H.L.); (C.Y.K.); (C.Z.); (S.W.J.); (J.Y.K.); (S.Y.L.); (M.Y.K.)
| | - Chae Yeon Kim
- College of Pharmacy, Chungnam National University, Daejeon 34134, Korea; (G.H.L.); (C.Y.K.); (C.Z.); (S.W.J.); (J.Y.K.); (S.Y.L.); (M.Y.K.)
| | - Chuanfeng Zheng
- College of Pharmacy, Chungnam National University, Daejeon 34134, Korea; (G.H.L.); (C.Y.K.); (C.Z.); (S.W.J.); (J.Y.K.); (S.Y.L.); (M.Y.K.)
| | - Sun Woo Jin
- College of Pharmacy, Chungnam National University, Daejeon 34134, Korea; (G.H.L.); (C.Y.K.); (C.Z.); (S.W.J.); (J.Y.K.); (S.Y.L.); (M.Y.K.)
| | - Ji Yeon Kim
- College of Pharmacy, Chungnam National University, Daejeon 34134, Korea; (G.H.L.); (C.Y.K.); (C.Z.); (S.W.J.); (J.Y.K.); (S.Y.L.); (M.Y.K.)
| | - Seung Yeon Lee
- College of Pharmacy, Chungnam National University, Daejeon 34134, Korea; (G.H.L.); (C.Y.K.); (C.Z.); (S.W.J.); (J.Y.K.); (S.Y.L.); (M.Y.K.)
| | - Mi Yeon Kim
- College of Pharmacy, Chungnam National University, Daejeon 34134, Korea; (G.H.L.); (C.Y.K.); (C.Z.); (S.W.J.); (J.Y.K.); (S.Y.L.); (M.Y.K.)
| | - Eun Hee Han
- Drug & Disease Target Research Team, Division of Bioconvergence Analysis, Korea Basic Science Institute (KBSI), Cheongju 28119, Korea;
| | | | - Hye Gwang Jeong
- College of Pharmacy, Chungnam National University, Daejeon 34134, Korea; (G.H.L.); (C.Y.K.); (C.Z.); (S.W.J.); (J.Y.K.); (S.Y.L.); (M.Y.K.)
- Correspondence: ; Tel.: +82-42-821-5936
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Lee SY, Lee KH, Ishii N, Hashimoto T, Kim JH, Oh CH, Park K. Rare case of bullous pemphigoid occurring on atrophic centers of disseminated superficial porokeratosis lesions. J Dermatol 2021; 48:e530-e531. [PMID: 34405438 DOI: 10.1111/1346-8138.16083] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 07/07/2021] [Accepted: 07/12/2021] [Indexed: 11/30/2022]
Affiliation(s)
- Seung Yeon Lee
- Department of Dermatology, School of Medicine, WonKwang University, Iksan, Korea
| | - Ki Hun Lee
- Department of Dermatology, School of Medicine, WonKwang University, Iksan, Korea
| | - Norito Ishii
- Department of Dermatology, Kurume University School of Medicine, Kurume, Japan
| | - Takashi Hashimoto
- Department of Dermatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Jong Hoon Kim
- Department of Dermatology, Gangnam Severance Hospital, Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Chil Hwan Oh
- Department of Dermatology, School of Medicine, WonKwang University, Iksan, Korea
| | - Kun Park
- Department of Dermatology, School of Medicine, WonKwang University, Iksan, Korea
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Kim KR, Jeong HJ, Kim Y, Lee SY, Kim Y, Kim HJ, Lee SH, Cho H, Kang JS, Ho WK. Calbindin regulates Kv4.1 trafficking and excitability in dentate granule cells via CaMKII-dependent phosphorylation. Exp Mol Med 2021; 53:1134-1147. [PMID: 34234278 PMCID: PMC8333054 DOI: 10.1038/s12276-021-00645-4] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Revised: 04/13/2021] [Accepted: 04/19/2021] [Indexed: 02/06/2023] Open
Abstract
Calbindin, a major Ca2+ buffer in dentate granule cells (GCs), plays a critical role in shaping Ca2+ signals, yet how it regulates neuronal function remains largely unknown. Here, we found that calbindin knockout (CBKO) mice exhibited dentate GC hyperexcitability and impaired pattern separation, which co-occurred with reduced K+ current due to downregulated surface expression of Kv4.1. Relatedly, manipulation of calbindin expression in HT22 cells led to changes in CaMKII activation and the level of surface localization of Kv4.1 through phosphorylation at serine 555, confirming the mechanism underlying neuronal hyperexcitability in CBKO mice. We also discovered that Ca2+ buffering capacity was significantly reduced in the GCs of Tg2576 mice to the level of CBKO GCs, and this reduction was restored to normal levels by antioxidants, suggesting that calbindin is a target of oxidative stress. Our data suggest that the regulation of CaMKII signaling by Ca2+ buffering is crucial for neuronal excitability regulation.
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Affiliation(s)
- Kyung-Ran Kim
- Department of Physiology, Seoul National University College of Medicine, Seoul, Korea
- Institute of BioInnovation Research, Kolon Life Science Inc, 110 Magokdong-ro, Gangseo-gu, Seoul, 07793, Korea
| | - Hyeon-Ju Jeong
- Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Suwon, Korea
| | - Yoonsub Kim
- Department of Physiology, Seoul National University College of Medicine, Seoul, Korea
| | - Seung Yeon Lee
- Department of Physiology, Seoul National University College of Medicine, Seoul, Korea
| | - Yujin Kim
- Department of Physiology, Seoul National University College of Medicine, Seoul, Korea
- Department of Brain and Cognitive Science, Seoul National University College of Natural Science, Seoul, Korea
| | - Hyun-Ji Kim
- Department of Physiology, Sungkyunkwan University School of Medicine, Suwon, Korea
| | - Suk-Ho Lee
- Department of Physiology, Seoul National University College of Medicine, Seoul, Korea
- Department of Brain and Cognitive Science, Seoul National University College of Natural Science, Seoul, Korea
- Neuroscience Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - Hana Cho
- Department of Physiology, Sungkyunkwan University School of Medicine, Suwon, Korea
| | - Jong-Sun Kang
- Department of Molecular Cell Biology, Sungkyunkwan University School of Medicine, Suwon, Korea.
| | - Won-Kyung Ho
- Department of Physiology, Seoul National University College of Medicine, Seoul, Korea.
- Department of Brain and Cognitive Science, Seoul National University College of Natural Science, Seoul, Korea.
- Neuroscience Research Institute, Seoul National University College of Medicine, Seoul, Korea.
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Basak I, Wicky HE, McDonald KO, Xu JB, Palmer JE, Best HL, Lefrancois S, Lee SY, Schoderboeck L, Hughes SM. A lysosomal enigma CLN5 and its significance in understanding neuronal ceroid lipofuscinosis. Cell Mol Life Sci 2021; 78:4735-4763. [PMID: 33792748 PMCID: PMC8195759 DOI: 10.1007/s00018-021-03813-x] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 03/12/2021] [Accepted: 03/16/2021] [Indexed: 01/09/2023]
Abstract
Neuronal Ceroid Lipofuscinosis (NCL), also known as Batten disease, is an incurable childhood brain disease. The thirteen forms of NCL are caused by mutations in thirteen CLN genes. Mutations in one CLN gene, CLN5, cause variant late-infantile NCL, with an age of onset between 4 and 7 years. The CLN5 protein is ubiquitously expressed in the majority of tissues studied and in the brain, CLN5 shows both neuronal and glial cell expression. Mutations in CLN5 are associated with the accumulation of autofluorescent storage material in lysosomes, the recycling units of the cell, in the brain and peripheral tissues. CLN5 resides in the lysosome and its function is still elusive. Initial studies suggested CLN5 was a transmembrane protein, which was later revealed to be processed into a soluble form. Multiple glycosylation sites have been reported, which may dictate its localisation and function. CLN5 interacts with several CLN proteins, and other lysosomal proteins, making it an important candidate to understand lysosomal biology. The existing knowledge on CLN5 biology stems from studies using several model organisms, including mice, sheep, cattle, dogs, social amoeba and cell cultures. Each model organism has its advantages and limitations, making it crucial to adopt a combinatorial approach, using both human cells and model organisms, to understand CLN5 pathologies and design drug therapies. In this comprehensive review, we have summarised and critiqued existing literature on CLN5 and have discussed the missing pieces of the puzzle that need to be addressed to develop an efficient therapy for CLN5 Batten disease.
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Affiliation(s)
- I Basak
- Neurodegenerative and Lysosomal Disease Laboratory, Department of Biochemistry, School of Biomedical Sciences, Brain Health Research Centre, University of Otago, 710 Cumberland Street, Dunedin, 9016, New Zealand
| | - H E Wicky
- Neurodegenerative and Lysosomal Disease Laboratory, Department of Biochemistry, School of Biomedical Sciences, Brain Health Research Centre, University of Otago, 710 Cumberland Street, Dunedin, 9016, New Zealand
| | - K O McDonald
- Neurodegenerative and Lysosomal Disease Laboratory, Department of Biochemistry, School of Biomedical Sciences, Brain Health Research Centre, University of Otago, 710 Cumberland Street, Dunedin, 9016, New Zealand
| | - J B Xu
- Neurodegenerative and Lysosomal Disease Laboratory, Department of Biochemistry, School of Biomedical Sciences, Brain Health Research Centre, University of Otago, 710 Cumberland Street, Dunedin, 9016, New Zealand
| | - J E Palmer
- Neurodegenerative and Lysosomal Disease Laboratory, Department of Biochemistry, School of Biomedical Sciences, Brain Health Research Centre, University of Otago, 710 Cumberland Street, Dunedin, 9016, New Zealand
| | - H L Best
- Neurodegenerative and Lysosomal Disease Laboratory, Department of Biochemistry, School of Biomedical Sciences, Brain Health Research Centre, University of Otago, 710 Cumberland Street, Dunedin, 9016, New Zealand
- School of Biosciences, Cardiff University, Sir Martin Evans Building, Museum Avenue, Wales, CF10 3AX, United Kingdom
| | - S Lefrancois
- Centre INRS-Institut Armand-Frappier, INRS, Laval, H7V 1B7, Canada
- Department of Anatomy and Cell Biology, McGill University, Montreal, H3A 2B2, Canada
| | - S Y Lee
- Department of Biochemistry and Molecular Biology, University of Kansas Medical Center, Kansas City, KS, 66160, USA
| | - L Schoderboeck
- Neurodegenerative and Lysosomal Disease Laboratory, Department of Biochemistry, School of Biomedical Sciences, Brain Health Research Centre, University of Otago, 710 Cumberland Street, Dunedin, 9016, New Zealand
| | - S M Hughes
- Neurodegenerative and Lysosomal Disease Laboratory, Department of Biochemistry, School of Biomedical Sciences, Brain Health Research Centre, University of Otago, 710 Cumberland Street, Dunedin, 9016, New Zealand.
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Abstract
Gastric cancer has the fifth-highest incidence rate and is the third leading cause of cancer-related deaths worldwide. The incidence of gastric cancer is higher in men than in women, but for the diffuse types of gastric cancer, the trend is opposite. Estrogen is considered the prime culprit behind these differences. Nevertheless, the action of estrogen in gastric cancers remains unclear. In this study, we investigated the effect of estrogen on diffuse-type gastric cancer. Human female diffuse gastric cancer SNU-16 cells were transplanted into male and female mice to analyze the effect of endogenous estrogen on tumor growth. Furthermore, the effect of exogenous estrogen was evaluated in ovariectomized mice. Expressed genes were compared between female and male xenograft models using RNA sequencing analysis. Furthermore, human gene expression omnibus databases were utilized to examine the effect of our target genes on overall survival. SNU-16-derived tumor growth was faster in female mice than in male mice. In total RNA sequencing, interferon gamma receptor 2 (IFNGR2), IQ motif containing E (IQCE), transient receptor potential cation channel subfamily M member 4 (TRPM4), and structure-specific endonuclease subunit SLX4 (SLX4) were found. These genes could be associated with the tumor growth in female diffuse-type gastric cancer which was affected by endogenous estrogen. In an ovariectomized gastric cancer xenograft model, exogenous estrogen promoted tumor growth. Especially, our results indicated that estrogen induced G protein-coupled estrogen receptor expression in these mice. These results suggest that estrogen aggravates tumor progression in female diffuse gastric cancer.
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Affiliation(s)
- Sunyi Lee
- Duksung Innovative Drug Center, Duksung Women’s University, Seoul, Korea
| | - Kyoung Mee Kim
- Duksung Innovative Drug Center, Duksung Women’s University, Seoul, Korea
| | - Seung Yeon Lee
- College of Pharmacy, Duksung Women’s University, Seoul, Korea
| | - Joohee Jung
- Duksung Innovative Drug Center, Duksung Women’s University, Seoul, Korea
- College of Pharmacy, Duksung Women’s University, Seoul, Korea
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Rhie YH, Lee SY, Walck JL, Hidayati SN. Seed dormancy and germination of Asarum sieboldii, a disjunct relict species in East Asia. Plant Biol (Stuttg) 2021; 23:300-306. [PMID: 33289269 DOI: 10.1111/plb.13224] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Accepted: 11/09/2020] [Indexed: 06/12/2023]
Abstract
Disjunct species in the same genus are a common feature of the flora in the temperate forests of East Asia and eastern North America. This study aimed to evaluate whether the kind of seed dormancy was maintained after species in the genus Asarum (Aristolochiaceae) were separated from their common ancestor. We classified the seed dormancy of Asarum sieboldii, an East Asian species, based on a phenology study and experiments in controlled temperature conditions, and then compared it to that of the previously studied A. canadense, an eastern North American species. The underdeveloped embryo of A. sieboldii grew and germinated (radicle emergence) in autumn but shoot emergence did not occur until the following spring. The seeds of A. sieboldii had deep simple epicotyl morphophysiological dormancy because the seeds with emerged radicle required a relatively long period of cold stratification to break epicotyl dormancy and produce a shoot. Although the seed of A. sieboldii had weaker radicle dormancy and stronger epicotyl dormancy compared to A. canadense, the kind of seed dormancy was the same for the two species. The trait of seed dormancy was inherited from a shared common ancestor and maintained in populations well after the two species (or their ancestors) separated. However, quantitative differences in temperature requirements for radicle and shoot emergence suggest the possibility of adaptation to the environment.
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Affiliation(s)
- Y H Rhie
- Department of Horticulture and Forestry, Pai Chai University, Daejeon, Korea
| | - S Y Lee
- Division of Horticulture & Medicinal Plant, Andong National University, Andong, Korea
| | - J L Walck
- Department of Biology, Middle Tennessee State University, Murfreesboro, TN, USA
| | - S N Hidayati
- Department of Biology, Middle Tennessee State University, Murfreesboro, TN, USA
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Ju YJ, Lee JE, Lee SY. Associations between Chewing Difficulty, Subjective Cognitive Decline, and Related Functional Difficulties among Older People without Dementia: Focus on Body Mass Index. J Nutr Health Aging 2021; 25:347-355. [PMID: 33575727 DOI: 10.1007/s12603-020-1521-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
OBJECTIVE This study aimed to determine whether chewing difficulty is associated with subjective cognitive decline (SCD) and related functional difficulties by body mass index. DESIGN A population-based cross-sectional study. SETTING AND PARTICIPANTS A nationwide sample of 54,004 individuals aged ≥65 years from the 2018 Korea Community Health Survey. MEASUREMENTS SCD and SCD-related functional difficulties were measured using the cognitive decline module of the Behavioral Risk Factor Surveillance System. Chewing difficulty was assessed based on a self-report questionnaire from an oral health-related behaviors interview survey. BMI was calculated from objective values by measuring height and weight through a physical meter. RESULTS Among the 54,004 individuals, the prevalence of SCD in underweight, overweight, and obesity group was 33.6% (n = 806), 30.3% (n = 9,691), and 28.7% (n=5,632) respectively. Chewing difficulty was associated with SCD and SCD-related functional difficulties. This association was more pronounced in underweight (BMI: <18.5 kg/m2) people [underweight: (odds ratio [OR] = 1.68, 95% confidence interval [CI] 1.48-1.92); normal weight: OR = 1.13, 95% CI 1.04-1.22; obese: OR = 1.15, 95% CI 1.05-1.27]. Similar trends were demonstrated for SCD-related functional difficulties (underweight: OR = 1.53, 95% CI 1.17-2.01; normal weight: OR = 1.36, 95% CI 1.15-1.63; obese: OR = 1.50, 95% CI 1.22-1.86). CONCLUSIONS Chewing difficulty was associated with SCD and SCD-related functional difficulties in older people. Our results suggest that underweight status may play roles in the associations between chewing difficulty and SCD and SCD-related functional difficulties.
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Affiliation(s)
- Y J Ju
- Soon Young Lee, MD, PhD, Department of Preventive Medicine and Public Health, Ajou University School of Medicine 206 World cup-ro, Yeongtong-gu, Suwon-si Gyeonggi-do 16499, Republic of Korea, T: 82-31-219-5301, F: 82-31-219-5084, E:
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Lee CT, Chen MZ, Yip CYC, Yap ES, Lee SY, Merchant RA. Prevalence of Anemia and Its Association with Frailty, Physical Function and Cognition in Community-Dwelling Older Adults: Findings from the HOPE Study. J Nutr Health Aging 2021; 25:679-687. [PMID: 33949637 DOI: 10.1007/s12603-021-1625-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
OBJECTIVES The prevalence of anemia and its impact on frailty and physical function amongst the multiethnic older populations in the Southeast Asian (SEA) countries are often not well studied. Singapore, a nation comprised of multiethnic communities, is one of the most rapidly aging population globally. We aim to evaluate the prevalence of anemia and its impact on frailty, and physical function in Healthy Older People Everyday (HOPE)- an epidemiologic population-based study on community-dwelling older adults in Singapore. DESIGN Cross-sectional study. SETTING Community. PARTICIPANTS 480 adults ≥ 65 years old. MEASUREMENTS Data were collected from interviewers-administered questionnaires on socio-demographics, FRAIL scale, Mini-Mental State Examination, EQ-5D, Barthel Index, and Lawton index. Hemoglobin concentration and physical assessments, including anthropometry, grip strength, timed up-and-go (TUG) were measured. RESULTS The overall prevalence of anemia was 15.2% (73 out of 480). The Indian ethnic group had the highest prevalence of anemia (32%, OR=3.02; 95%CI= 1.23-7.41) with the lowest hemoglobin concentration compared to the overall population (13.0±1.3g/L and 13.5±1.4g/L, p=0.02). Hemoglobin levels and anemia were significantly associated with frailty (OR=2.28; 95% CI=1.02-5.10), low grip strength (OR=1.79; 95% CI=1.01-3.03), ≥ one IADL impairment (OR=2.35; 95% CI=1.39-3.97). Each 1 g/dL increase in hemoglobin was associated with a 6% decrease in frailty odds after adjusting for potential covariates (OR = 0.94, 95% CI: 0.90-0.99). There was a significant difference in the mean TUG between the non-anemic (11.0±3.4 seconds) and anemic (12.3±6.0 seconds, p=0.01) counterparts, but no difference in the number of falls. CONCLUSION In our multiethnic Asian population, anemia was adversely associated with frailty, decreased muscle strength, and IADL impairment. Health policies on anemia screening should be employed to avoid or potentially delay or reverse these adverse outcomes associated with anemia. Recognition, evaluation, and treatment of anemia amongst this vulnerable population is warranted.
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Affiliation(s)
- C-T Lee
- Chun-Tsu Lee, MBBS(Mal.), M.Med (S'pore), MRCP(UK), FRCPath (UK), FAMS, Fast and Chronic Program, Alexandra Hospital, National University Health System, 378 Alexandra Road, Singapore 159964. Telephone: +65 64722000.
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Nam HM, Noh SH, Lim BR, Kim DH, Lee SY, Oh WG. A Case of the Safety and Efficacy of Guselkumab in Psoriasis with Alcoholic Liver Cirrhosis. Ann Dermatol 2020; 33:88-90. [PMID: 33911819 PMCID: PMC7875222 DOI: 10.5021/ad.2021.33.1.88] [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] [Received: 11/11/2019] [Revised: 01/20/2020] [Accepted: 02/01/2020] [Indexed: 12/01/2022] Open
Affiliation(s)
- Hyun Min Nam
- Department of Dermatology, Design Hospital, Jeonju, Korea
| | - Soo Hyeon Noh
- Department of Dermatology, Design Hospital, Jeonju, Korea
| | - Bo Ra Lim
- Department of Dermatology, Wonkwang University School of Medicine, Iksan, Korea
| | - Do Hyeon Kim
- Department of Dermatology, Wonkwang University School of Medicine, Iksan, Korea
| | - Seung Yeon Lee
- Department of Dermatology, Wonkwang University School of Medicine, Iksan, Korea
| | - Wang Guk Oh
- Department of Gastroenterology, Design Hospital, Jeonju, Korea
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Chan NH, Lee SY, Cheng NHY, Wong HY, Lo WK, Lung DC. Hospital infection control best practice: Five essential elements to successfully minimize healthcare-associated COVID-19. Infect Prev Pract 2020; 3:100110. [PMID: 34316572 PMCID: PMC7837126 DOI: 10.1016/j.infpip.2020.100110] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 12/10/2020] [Indexed: 01/22/2023] Open
Affiliation(s)
- N H Chan
- Infection Control Team, Queen Elizabeth Hospital, Hong Kong Special Administrative Region
| | - S Y Lee
- Infection Control Team, Queen Elizabeth Hospital, Hong Kong Special Administrative Region
| | - N H Y Cheng
- Department of Pathology, Queen Elizabeth Hospital, Hong Kong Special Administrative Region
| | - H Y Wong
- Infection Control Team, Queen Elizabeth Hospital, Hong Kong Special Administrative Region
| | - W K Lo
- Infection Control Team, Queen Elizabeth Hospital, Hong Kong Special Administrative Region
| | - D C Lung
- Infection Control Team, Queen Elizabeth Hospital, Hong Kong Special Administrative Region.,Department of Pathology, Queen Elizabeth Hospital, Hong Kong Special Administrative Region
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Jo CH, Lee SY, Yoon KS, Oh S, Shin S. Allogeneic Platelet-Rich Plasma Versus Corticosteroid Injection for the Treatment of Rotator Cuff Disease: A Randomized Controlled Trial. J Bone Joint Surg Am 2020; 102:2129-2137. [PMID: 33044249 DOI: 10.2106/jbjs.19.01411] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [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: 02/01/2023]
Abstract
BACKGROUND The use of platelet-rich plasma (PRP) for the treatment of rotator cuff disease is still controversial. The purpose of the present study was to investigate the safety and efficacy of a fully characterized allogeneic pure PRP injection into the subacromial space of patients with rotator cuff disease in comparison with corticosteroid injection. METHODS A 2-group, parallel, assessor-blinded, randomized controlled trial was conducted. A total of 60 patients with clinically and structurally diagnosed rotator cuff disease were randomly assigned to receive a subacromial injection of either 4 mL of allogeneic pure PRP or a 4-mL mixture of 1 mL of 40-mg/mL triamcinolone acetonide and 3 mL of 2% lidocaine under ultrasonographic guidance. The primary outcomes were safety and the Constant score at 1 month. The secondary outcomes were pain, range of motion, muscle strength, functional scores, and overall satisfaction and function. RESULTS There were no treatment-related adverse events. The Constant score at 1 month did not significantly differ between the PRP and corticosteroid groups. At 6 months, the DASH (Disabilities of the Arm, Shoulder and Hand) score, overall function, and external rotation were significantly better in the PRP group than in the corticosteroid group, and the other clinical outcomes did not show significant differences. All pain measurements, the strength of the supraspinatus and infraspinatus, and 5 functional scores also improved slowly and steadily after injection, becoming significantly better at 6 months compared with those before the injection, whereas those in the corticosteroid group responded promptly but did not further improve. CONCLUSIONS Allogeneic PRP injections for the treatment of rotator cuff disease are safe but are not definitely superior to corticosteroid injections with respect to pain relief and functional improvement during 6 months. The DASH score, overall function, and external rotation were significantly better in the PRP group than in the steroid group at 6 months. Generally, PRP slowly but steadily reduced pain and improved function of the shoulder until 6 months, whereas corticosteroid did not. LEVEL OF EVIDENCE Therapeutic Level I. See Instructions for Authors for a complete description of levels of evidence.
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Affiliation(s)
- Chris Hyunchul Jo
- Departments of Orthopedic Surgery (C.H.J., S.Y.L., and K.S.Y.), Biostatistics (S.O.), and Laboratory Medicine (S.S.), SMG-SNU Boramae Medical Center, Seoul National University College of Medicine, Seoul, Republic of Korea
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Park I, Gong J, Lyons GL, Hirota T, Takahashi M, Kim B, Lee SY, Kim YS, Lee J, Leventhal BL. Prevalence of and Factors Associated with School Bullying in Students with Autism Spectrum Disorder: A Cross-Cultural Meta-Analysis. Yonsei Med J 2020; 61:909-922. [PMID: 33107234 PMCID: PMC7593096 DOI: 10.3349/ymj.2020.61.11.909] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 09/06/2020] [Accepted: 09/17/2020] [Indexed: 11/29/2022] Open
Abstract
Through this meta-analysis, we sought to examine the prevalence of, risks for, and factors associated with bullying involvement (victimization, perpetration, perpetration-victimization) among students with autism spectrum disorder (ASD). Additionally, we attempted to examine sources of variance in the prevalence and effect sizes of bullying in students with ASD across studies. Systematic database and literature review identified 34 relevant studies (31 for Western countries, three for Eastern countries). Pooled prevalence estimates for victimization, perpetration, and perpetration-victimization in general were 67%, 29%, and 14%, respectively. The risk of victimization in students with ASD was significantly higher than that in typically developing students and students with other disabilities. Further, deficits in social interaction and communication, externalizing symptoms, internalizing symptoms, and integrated inclusive school settings were related to higher victimization, and externalizing symptoms were related to higher perpetration. Finally, moderation analyses revealed significant variations in the pooled prevalences thereof depending on culture, age, school settings, and methodological quality and in the pooled effect sizes according to publication year and methodological quality. Our results highlight needs for bullying intervention for students with ASD, especially those who are younger, are in an inclusive school setting, and have higher social difficulties and externalizing/internalizing symptoms; for intensive research of bullying experiences among students with ASD in Eastern countries; and for efforts to improve the methodological quality of such research.
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Affiliation(s)
- Inhwan Park
- Department of Psychology, Ewha Womans University, Seoul, Korea
| | - Jared Gong
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, CA, USA
| | - Gregory L Lyons
- Center for ASD and Neurodevelopmental Disorders, University of California, San Francisco, CA, USA
| | - Tomoya Hirota
- Department of Psychiatry and Behavioral Sciences, University of California, San Francisco, CA, USA
| | - Michio Takahashi
- Research Center for Child Mental Development, Hirosaki University, Hirosaki, Aomori, Japan
- Department of Clinical Psychological Science, Hirosaki University, Hirosaki, Aomori, Japan
| | - Bora Kim
- Department of Psychiatry and Behavioral Sciences, University of California, San Francisco, CA, USA
| | - Seung Yeon Lee
- Department of Psychology, Ewha Womans University, Seoul, Korea
| | - Young Shin Kim
- Center for ASD and Neurodevelopmental Disorders, University of California, San Francisco, CA, USA
- Department of Psychiatry and Behavioral Sciences, University of California, San Francisco, CA, USA.
| | - Jeongsoo Lee
- Department of Psychology, Ewha Womans University, Seoul, Korea
| | - Bennett L Leventhal
- Center for ASD and Neurodevelopmental Disorders, University of California, San Francisco, CA, USA
- Department of Psychiatry and Behavioral Sciences, University of California, San Francisco, CA, USA
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Seok DY, Kim YB, Lee SY, Kim J, Choi HR. Ultra–Thin Joint Torque Sensor With Enhanced Sensitivity for Robotic Application. IEEE Robot Autom Lett 2020. [DOI: 10.1109/lra.2020.3010442] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Kim YB, Seok DY, Lee SY, Kim J, Kang G, Kim U, Choi HR. 6-Axis Force/Torque Sensor With a Novel Autonomous Weight Compensating Capability for Robotic Applications. IEEE Robot Autom Lett 2020. [DOI: 10.1109/lra.2020.3015450] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Wong SCY, Kwong RTS, Wu TC, Chan JWM, Chu MY, Lee SY, Wong HY, Lung DC. Risk of nosocomial transmission of coronavirus disease 2019: an experience in a general ward setting in Hong Kong. J Hosp Infect 2020; 105:119-127. [PMID: 32259546 PMCID: PMC7128692 DOI: 10.1016/j.jhin.2020.03.036] [Citation(s) in RCA: 156] [Impact Index Per Article: 39.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Accepted: 03/27/2020] [Indexed: 01/08/2023]
Abstract
BACKGROUND Coronavirus disease 2019 (COVID-19) was first reported in Wuhan in December 2019 and has rapidly spread across different cities within and outside China. Hong Kong started to prepare for COVID-19 on 31st December 2019 and infection control measures in public hospitals were tightened to limit nosocomial transmission within healthcare facilities. However, the recommendations on the transmission-based precautions required for COVID-19 in hospital settings vary from droplet and contact precautions, to contact and airborne precautions with placement of patients in airborne infection isolation rooms. AIM To describe an outbreak investigation of a patient with COVID-19 who was nursed in an open cubicle of a general ward before the diagnosis was made. METHOD Contacts were identified and risk categorized as 'close' or 'casual' for decisions on quarantine and/or medical surveillance. Respiratory specimens were collected from contacts who developed fever, and/or respiratory symptoms during the surveillance period and were tested for SARS-CoV-2. FINDINGS A total of 71 staff and 49 patients were identified from contact tracing, seven staff and 10 patients fulfilled the criteria of 'close contact'. At the end of 28-day surveillance, 76 tests were performed on 52 contacts and all were negative, including all patient close contacts and six of the seven staff close contacts. The remaining contacts were asymptomatic throughout the surveillance period. CONCLUSION Our findings suggest that SARS-CoV-2 is not spread by an airborne route, and nosocomial transmissions can be prevented through vigilant basic infection control measures, including wearing of surgical masks, hand and environmental hygiene.
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Affiliation(s)
- S C Y Wong
- Department of Pathology, Queen Elizabeth Hospital, Hong Kong Special Administrative Region
| | - R T-S Kwong
- Department of Medicine, Queen Elizabeth Hospital, Hong Kong Special Administrative Region
| | - T C Wu
- Department of Medicine, Queen Elizabeth Hospital, Hong Kong Special Administrative Region
| | - J W M Chan
- Department of Medicine, Queen Elizabeth Hospital, Hong Kong Special Administrative Region
| | - M Y Chu
- Department of Medicine, Queen Elizabeth Hospital, Hong Kong Special Administrative Region
| | - S Y Lee
- Infection control Team, Queen Elizabeth Hospital, Hong Kong Special Administrative Region
| | - H Y Wong
- Infection control Team, Queen Elizabeth Hospital, Hong Kong Special Administrative Region
| | - D C Lung
- Department of Pathology, Queen Elizabeth Hospital, Hong Kong Special Administrative Region; Infection control Team, Queen Elizabeth Hospital, Hong Kong Special Administrative Region.
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Lee SY, Yeom SS, Kim CH, Kim YJ, Kim HR. A new aortoiliac calcification scoring system to predict grade C anastomotic leak following rectal cancer surgery. Tech Coloproctol 2020; 24:843-849. [PMID: 32468245 DOI: 10.1007/s10151-020-02246-1] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 05/19/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND Aortoiliac calcification may be a surrogate marker of decreased visceral perfusion causing anastomotic leak (AL). The aim of this study was to evaluate the predictive role of aortoiliac calcification for AL after rectal cancer surgery. METHODS We enrolled patients with primary rectal cancer who had restorative resection at our institution between January 2013 and December 2015. An aortoiliac calcification score was calculated as the sum of calcification scores at the infrarenal aorta (0: no, 1: ≤ 3 cm, 2: > 3 cm) and the common iliac arteries (0: no, 1: unilateral, 2: bilateral). AL was classified into three grades: grade A, requiring no intervention; grade B, requiring therapeutic intervention without re-laparotomy; and grade C, requiring re-laparotomy. Clinicopathological characteristics were analyzed to identify risk factors for AL. RESULTS There were 583 patients. Three-hundred forty-five (59.2%) had an aortoiliac calcification score ≥ 3, and 37 (6.3%) patients experienced AL, in 30 cases (5.1%) grade C AL. Patients with an aortoiliac calcification score ≥ 3 had a higher incidence of grade C AL (6.7% vs. 2.9%, p = 0.045). Multivariate logistic regression analysis revealed that an aortoiliac calcification score ≥ 3 was an independent risk factor for grade C AL (odds ratio = 2.669, 95% confidence interval 1.066-6.686, p = 0.036). CONCLUSIONS Aortoiliac calcification may be considered a risk factor for grade C AL after rectal cancer surgery.
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Affiliation(s)
- S Y Lee
- Department of Surgery, Chonnam National University Hwasun Hospital and Medical School, 322 Seoyang-ro Hwasun-eup, Hwasun-gun, Jeonnam, 58128, South Korea
| | - S-S Yeom
- Department of Surgery, Chonnam National University Hwasun Hospital and Medical School, 322 Seoyang-ro Hwasun-eup, Hwasun-gun, Jeonnam, 58128, South Korea
| | - C H Kim
- Department of Surgery, Chonnam National University Hwasun Hospital and Medical School, 322 Seoyang-ro Hwasun-eup, Hwasun-gun, Jeonnam, 58128, South Korea
| | - Y J Kim
- Department of Surgery, Chonnam National University Hwasun Hospital and Medical School, 322 Seoyang-ro Hwasun-eup, Hwasun-gun, Jeonnam, 58128, South Korea
| | - H R Kim
- Department of Surgery, Chonnam National University Hwasun Hospital and Medical School, 322 Seoyang-ro Hwasun-eup, Hwasun-gun, Jeonnam, 58128, South Korea.
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Kim KW, Chung S, Lee SY, Yoon SS, Kang HR. Successful Infusion of Obinutuzumab by Desensitization: A Case of Anaphylactic Shock During Desensitization. J Investig Allergol Clin Immunol 2020; 30:457-459. [PMID: 32376522 DOI: 10.18176/jiaci.0581] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Affiliation(s)
- K W Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - S Chung
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - S Y Lee
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea.,Institute of Allergy and Clinical Immunology, Seoul National University Medical Research Center, Seoul, Korea
| | - S S Yoon
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - H R Kang
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea.,Institute of Allergy and Clinical Immunology, Seoul National University Medical Research Center, Seoul, Korea.,Drug Safety Monitoring Center, Seoul National University Hospital, Seoul, Korea
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