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Pusztai L, Denkert C, O'Shaughnessy J, Cortes J, Dent R, McArthur H, Kümmel S, Bergh J, Park YH, Hui R, Harbeck N, Takahashi M, Untch M, Fasching PA, Cardoso F, Zhu Y, Pan W, Tryfonidis K, Schmid P. Event-free survival by residual cancer burden with pembrolizumab in early-stage TNBC: exploratory analysis from KEYNOTE-522. Ann Oncol 2024; 35:429-436. [PMID: 38369015 DOI: 10.1016/j.annonc.2024.02.002] [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: 11/30/2023] [Revised: 02/05/2024] [Accepted: 02/08/2024] [Indexed: 02/20/2024] Open
Abstract
BACKGROUND KEYNOTE-522 demonstrated statistically significant improvements in pathological complete response (pCR) with neoadjuvant pembrolizumab plus chemotherapy and event-free survival (EFS) with neoadjuvant pembrolizumab plus chemotherapy followed by adjuvant pembrolizumab in patients with high-risk, early-stage triple-negative breast cancer (TNBC). Prior studies have shown the prognostic value of the residual cancer burden (RCB) index to quantify the extent of residual disease after neoadjuvant chemotherapy. In this preplanned exploratory analysis, we assessed RCB distribution and EFS within RCB categories by treatment group. PATIENTS AND METHODS A total of 1174 patients with stage T1c/N1-2 or T2-4/N0-2 TNBC were randomized 2 : 1 to pembrolizumab 200 mg or placebo every 3 weeks given with four cycles of paclitaxel + carboplatin, followed by four cycles of doxorubicin or epirubicin + cyclophosphamide. After surgery, patients received pembrolizumab or placebo for nine cycles or until recurrence or unacceptable toxicity. Primary endpoints are pCR and EFS. RCB is a prespecified exploratory endpoint. The association between EFS and RCB was assessed using a Cox regression model. RESULTS Pembrolizumab shifted patients into lower RCB categories across the entire spectrum compared with placebo. There were more patients in the pembrolizumab group with RCB-0 (pCR), and fewer patients in the pembrolizumab group with RCB-1, RCB-2, and RCB-3. The corresponding hazard ratios (95% confidence intervals) for EFS were 0.70 (0.38-1.31), 0.92 (0.39-2.20), 0.52 (0.32-0.82), and 1.24 (0.69-2.23). The most common first EFS events were distant recurrences, with fewer in the pembrolizumab group across all RCB categories. Among patients with RCB-0/1, more than half [21/38 (55.3%)] of all events were central nervous system recurrences, with 13/22 (59.1%) in the pembrolizumab group and 8/16 (50.0%) in the placebo group. CONCLUSIONS Addition of pembrolizumab to chemotherapy resulted in fewer EFS events in the RCB-0, RCB-1, and RCB-2 categories, with the greatest benefit in RCB-2. These findings demonstrate that pembrolizumab not only increased pCR rates, but also improved EFS among most patients who do not have a pCR.
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MESH Headings
- Humans
- Female
- Antibodies, Monoclonal, Humanized/therapeutic use
- Antibodies, Monoclonal, Humanized/administration & dosage
- Antibodies, Monoclonal, Humanized/adverse effects
- Triple Negative Breast Neoplasms/drug therapy
- Triple Negative Breast Neoplasms/pathology
- Triple Negative Breast Neoplasms/mortality
- Antineoplastic Combined Chemotherapy Protocols/therapeutic use
- Neoplasm, Residual/pathology
- Middle Aged
- Paclitaxel/administration & dosage
- Paclitaxel/therapeutic use
- Paclitaxel/adverse effects
- Carboplatin/administration & dosage
- Neoadjuvant Therapy/methods
- Neoplasm Staging
- Cyclophosphamide/administration & dosage
- Cyclophosphamide/therapeutic use
- Cyclophosphamide/adverse effects
- Aged
- Adult
- Doxorubicin/therapeutic use
- Doxorubicin/administration & dosage
- Epirubicin/administration & dosage
- Epirubicin/therapeutic use
- Progression-Free Survival
- Chemotherapy, Adjuvant/methods
- Antineoplastic Agents, Immunological/therapeutic use
- Antineoplastic Agents, Immunological/adverse effects
- Antineoplastic Agents, Immunological/administration & dosage
- Double-Blind Method
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Affiliation(s)
- L Pusztai
- Yale School of Medicine, Yale Cancer Center, New Haven, USA.
| | - C Denkert
- Institute of Pathology, Philipps-University Marburg and University Hospital Marburg, Marburg, Germany
| | - J O'Shaughnessy
- Baylor University Medical Center, Texas Oncology, US Oncology Network, Dallas, USA
| | - J Cortes
- International Breast Cancer Center, Quironsalud Group, Barcelona; Universidad Europea de Madrid, Faculty of Biomedical and Health Sciences, Department of Medicine, Madrid, Spain
| | - R Dent
- National Cancer Center Singapore, Duke - National University of Singapore Medical School, Singapore, Singapore
| | - H McArthur
- University of Texas Southwestern Medical Center, Dallas, USA
| | - S Kümmel
- Breast Unit, Kliniken Essen-Mitte, Essen; Charité - Universitätsmedizin Berlin, Department of Gynecology with Breast Center, Berlin, Germany
| | - J Bergh
- Department of Oncology-Pathology, Karolinska Institutet and Breast Cancer Centre, Cancer Theme, Karolinska University Hospital, Karolinska Comprehensive Cancer Center, Solna, Sweden
| | - Y H Park
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - R Hui
- Westmead Breast Cancer Institute, Westmead Hospital and the University of Sydney, Sydney, Australia
| | - N Harbeck
- Breast Center, Department of Obstetrics and Gynaecology, LMU University Hospital, Munich, Germany
| | - M Takahashi
- Hokkaido University Hospital, Sapporo, Japan
| | - M Untch
- Breast Cancer Center, Helios Klinikum Berlin-Buch, Berlin
| | - P A Fasching
- University Hospital Erlangen, Comprehensive Cancer Center Erlangen-EMN, Erlangen, Germany
| | - F Cardoso
- Breast Unit, Champalimaud Clinical Center/Champalimaud Foundation, Lisbon, Portugal
| | - Y Zhu
- Oncology, Merck & Co., Inc., Rahway, USA
| | - W Pan
- Oncology, Merck & Co., Inc., Rahway, USA
| | | | - P Schmid
- Centre for Experimental Cancer Medicine, Barts Cancer Institute, Queen Mary University of London, London, UK
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Ko TY, Ye H, Murali G, Lee SY, Park YH, Lee J, Lee J, Yun DJ, Gogotsi Y, Kim SJ, Kim SH, Jeong YJ, Park SJ, In I. Functionalized MXene ink enables environmentally stable printed electronics. Nat Commun 2024; 15:3459. [PMID: 38658566 PMCID: PMC11043420 DOI: 10.1038/s41467-024-47700-y] [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: 10/10/2023] [Accepted: 04/08/2024] [Indexed: 04/26/2024] Open
Abstract
Establishing dependable, cost-effective electrical connections is vital for enhancing device performance and shrinking electronic circuits. MXenes, combining excellent electrical conductivity, high breakdown voltage, solution processability, and two-dimensional morphology, are promising candidates for contacts in microelectronics. However, their hydrophilic surfaces, which enable spontaneous environmental degradation and poor dispersion stability in organic solvents, have restricted certain electronic applications. Herein, electrohydrodynamic printing technique is used to fabricate fully solution-processed thin-film transistors with alkylated 3,4-dihydroxy-L-phenylalanine functionalized Ti3C2Tx (AD-MXene) as source, drain, and gate electrodes. The AD-MXene has excellent dispersion stability in ethanol, which is required for electrohydrodynamic printing, and maintains high electrical conductivity. It outperformed conventional vacuum-deposited Au and Al electrodes, providing thin-film transistors with good environmental stability due to its hydrophobicity. Further, thin-film transistors are integrated into logic gates and one-transistor-one-memory cells. This work, unveiling the ligand-functionalized MXenes' potential in printed electrical contacts, promotes environmentally robust MXene-based electronics (MXetronics).
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Affiliation(s)
- Tae Yun Ko
- Materials Architecturing Research Center, Korea Institute of Science and Technology, 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792, South Korea
- Convergence Research Center for Solutions to Electromagnetic Interference in Future-mobility, Korea Institute of Science and Technology, 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792, South Korea
- Nanoplexus Solutions Ltd, Graphene Engineering Innovation Centre, Masdar Building, Sackville Street, Manchester, M1 3BB, UK
| | - Heqing Ye
- School of Flexible Electronics (SoFE) and Henan Institute of Flexible Electronics (HIFE), Henan University, 379 Mingli Road, Zhengzhou, 450046, China
- School of Chemical Engineering, Konkuk University, Seoul, 05029, South Korea
| | - G Murali
- Department of Polymer Science and Engineering, Chemical Industry Institute, Korea National University of Transportation, Chungju, 27469, South Korea
- Department of IT-Energy Convergence (BK21 FOUR), Korea National University of Transportation, Chungju, 27469, South Korea
| | - Seul-Yi Lee
- Department of Chemistry, Inha University, Inharo 100, Incheon, 22212, South Korea
| | - Young Ho Park
- Department of Polymer Science and Engineering, Chemical Industry Institute, Korea National University of Transportation, Chungju, 27469, South Korea
- Department of IT-Energy Convergence (BK21 FOUR), Korea National University of Transportation, Chungju, 27469, South Korea
| | - Jihoon Lee
- Department of Polymer Science and Engineering, Chemical Industry Institute, Korea National University of Transportation, Chungju, 27469, South Korea
- Department of IT-Energy Convergence (BK21 FOUR), Korea National University of Transportation, Chungju, 27469, South Korea
| | - Juyun Lee
- Materials Architecturing Research Center, Korea Institute of Science and Technology, 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792, South Korea
- Convergence Research Center for Solutions to Electromagnetic Interference in Future-mobility, Korea Institute of Science and Technology, 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792, South Korea
- Department of Materials Science and Engineering, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul, 02841, South Korea
| | - Dong-Jin Yun
- Analytical Science Laboratory of Samsung Advanced Institute of Technology (SAIT), Suwon, 16678, South Korea
| | - Yury Gogotsi
- Department of Materials Science and Engineering and A. J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, Pennsylvania, 19104, US
| | - Seon Joon Kim
- Materials Architecturing Research Center, Korea Institute of Science and Technology, 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792, South Korea.
- Convergence Research Center for Solutions to Electromagnetic Interference in Future-mobility, Korea Institute of Science and Technology, 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792, South Korea.
- Division of Nanoscience and Technology, KIST School, University of Science and Technology, 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792, South Korea.
| | - Se Hyun Kim
- School of Chemical Engineering, Konkuk University, Seoul, 05029, South Korea.
| | - Yong Jin Jeong
- Department of IT-Energy Convergence (BK21 FOUR), Korea National University of Transportation, Chungju, 27469, South Korea.
- Department of Materials Science and Engineering, Korea National University of Transportation, Chungju, 27469, South Korea.
| | - Soo-Jin Park
- Department of Chemistry, Inha University, Inharo 100, Incheon, 22212, South Korea.
| | - Insik In
- Department of Polymer Science and Engineering, Chemical Industry Institute, Korea National University of Transportation, Chungju, 27469, South Korea.
- Department of IT-Energy Convergence (BK21 FOUR), Korea National University of Transportation, Chungju, 27469, South Korea.
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Behseresht S, Park YH. Additive Manufacturing of Composite Polymers: Thermomechanical FEA and Experimental Study. Materials (Basel) 2024; 17:1912. [PMID: 38673269 PMCID: PMC11051729 DOI: 10.3390/ma17081912] [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] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 04/16/2024] [Accepted: 04/18/2024] [Indexed: 04/28/2024]
Abstract
This study presents a comprehensive approach for simulating the additive manufacturing process of semi-crystalline composite polymers using Fused Deposition Modeling (FDM). By combining thermomechanical Finite Element Analysis (FEA) with experimental validation, our main objective is to comprehend and model the complex behaviors of 50 wt.% carbon fiber-reinforced Polyphenylene Sulfide (CF PPS) during FDM printing. The simulations of the FDM process encompass various theoretical aspects, including heat transfer, orthotropic thermal properties, thermal dissipation mechanisms, polymer crystallization, anisotropic viscoelasticity, and material shrinkage. We utilize Abaqus user subroutines such as UMATHT for thermal orthotropic constitutive behavior, UEPACTIVATIONVOL for progressive activation of elements, and ORIENT for material orientation. Mechanical behavior is characterized using a Maxwell model for viscoelastic materials, incorporating a dual non-isothermal crystallization kinetics model within the UMAT subroutine. Our approach is validated by comparing nodal temperature distributions obtained from both the Abaqus built-in AM Modeler and our user subroutines, showing close agreement and demonstrating the effectiveness of our simulation methods. Experimental verification further confirms the accuracy of our simulation techniques. The mechanical analysis investigates residual stresses and distortions, with particular emphasis on the critical transverse in-plane stress component. This study offers valuable insights into accurately simulating thermomechanical behaviors in additive manufacturing of composite polymers.
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Affiliation(s)
| | - Young Ho Park
- Department of Mechanical and Aerospace Engineering, New Mexico State University, Las Cruces, NM 88003, USA;
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Kim M, Park YH, Song YS, Kang K, Kim S. Can striatal dopamine transporter uptake increase following CSF tap test in patients with idiopathic normal pressure hydrocephalus? Parkinsonism Relat Disord 2024; 121:106048. [PMID: 38422557 DOI: 10.1016/j.parkreldis.2024.106048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 01/26/2024] [Accepted: 02/12/2024] [Indexed: 03/02/2024]
Affiliation(s)
- Minju Kim
- Department of Neurology, Seoul National University College of Medicine and Department of Neurology, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Young Ho Park
- Department of Neurology, Seoul National University College of Medicine and Department of Neurology, Seoul National University Bundang Hospital, Seongnam, South Korea.
| | - Yoo Sung Song
- Department of Nuclear Medicine, Seoul National University College of Medicine and Department of Nuclear Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
| | - Kyunghun Kang
- Department of Neurology, Kyungpook National University School of Medicine and Department of Neurology, Kyungpook National University Chilgok Hospital, Daegu, South Korea
| | - SangYun Kim
- Department of Neurology, Seoul National University College of Medicine and Department of Neurology, Seoul National University Bundang Hospital, Seongnam, South Korea
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5
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Shim KH, Kim D, Kang MJ, Pyun JM, Park YH, Youn YC, Park KW, Suk K, Lee HW, Gomes BF, Zetterberg H, An SSA, Kim S. Subsequent correlated changes in complement component 3 and amyloid beta oligomers in the blood of patients with Alzheimer's disease. Alzheimers Dement 2024; 20:2731-2741. [PMID: 38411315 PMCID: PMC11032549 DOI: 10.1002/alz.13734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 12/05/2023] [Accepted: 01/19/2024] [Indexed: 02/28/2024]
Abstract
INTRODUCTION Alzheimer's disease (AD) involves the complement cascade, with complement component 3 (C3) playing a key role. However, the relationship between C3 and amyloid beta (Aβ) in blood is limited. METHODS Plasma C3 and Aβ oligomerization tendency (AβOt) were measured in 35 AD patients and 62 healthy controls. Correlations with cerebrospinal fluid (CSF) biomarkers, cognitive impairment, and amyloid positron emission tomography (PET) were analyzed. Differences between biomarkers were compared in groups classified by concordances of biomarkers. RESULTS Plasma C3 and AβOt were elevated in AD patients and in CSF or amyloid PET-positive groups. Weak positive correlation was found between C3 and AβOt, while both had strong negative correlations with CSF Aβ42 and cognitive performance. Abnormalities were observed for AβOt and CSF Aβ42 followed by C3 changes. DISCUSSION Increased plasma C3 in AD are associated with amyloid pathology, possibly reflecting a defense response for Aβ clearance. Further studies on Aβ-binding proteins will enhance understanding of Aβ mechanisms in blood.
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Affiliation(s)
- Kyu Hwan Shim
- Department of Bionano Technology, Gachon University, Seongnam, Republic of Korea
| | - Danyeong Kim
- Department of Bionano Technology, Gachon University, Seongnam, Republic of Korea
| | - Min Ju Kang
- Department of Neurology, Veterans Medical Research Institute, Veterans Health Service Medical Center, Seoul, Republic of Korea
| | - Jung-Min Pyun
- Department of Neurology, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine, Seoul, Republic of Korea
| | - Young Ho Park
- Department of Neurology, Seoul National University College of Medicine and Clinical Neuroscience Center, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Young Chul Youn
- Department of Neurology, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Kyung Won Park
- Department of Neurology, Dong-A University College of Medicine and Institute of Convergence Bio-Health, Busan, Republic of Korea
| | - Kyoungho Suk
- Department of Pharmacology, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Ho-Won Lee
- Department of Neurology, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Bárbara Fernandes Gomes
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience & Physiology, the Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden
| | - Henrik Zetterberg
- Department of Psychiatry and Neurochemistry, Institute of Neuroscience & Physiology, the Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden
- Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden
- Department of Neurodegenerative Disease, UCL Institute of Neurology, Queen Square, London, UK
- UK Dementia Research Institute at UCL, London, UK
- Hong Kong Center for Neurodegenerative Diseases, Clear Water Bay, Hong Kong, China
- Wisconsin Alzheimer's Disease Research Center, University of Wisconsin School of Medicine and Public Health, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Seong Soo A An
- Department of Bionano Technology, Gachon University, Seongnam, Republic of Korea
| | - SangYun Kim
- Department of Neurology, Seoul National University College of Medicine and Clinical Neuroscience Center, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
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Behseresht S, Love A, Valdez Pastrana OA, Park YH. Enhancing Fused Deposition Modeling Precision with Serial Communication-Driven Closed-Loop Control and Image Analysis for Fault Diagnosis-Correction. Materials (Basel) 2024; 17:1459. [PMID: 38611974 PMCID: PMC11012349 DOI: 10.3390/ma17071459] [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] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 03/15/2024] [Accepted: 03/20/2024] [Indexed: 04/14/2024]
Abstract
Additive manufacturing (AM) also commonly known as 3D printing is an advanced technique for manufacturing complex three-dimensional (3D) parts by depositing raw material layer by layer. Various sub-categories of additive manufacturing exist including directed energy deposition (DED), powder bed fusion (PBF), and fused deposition modeling (FDM). FDM has gained widespread adoption as a popular method for manufacturing 3D parts, even for heavy-duty industrial applications. However, challenges remain, particularly regarding part quality. Print parameters such as print speed, nozzle temperature, and flow rate can significantly impact the final product's quality. To address this, implementing a closed-loop quality control system is essential. This system consistently monitors part surface quality during printing and adjusts print parameters upon defect detection. In this study, we propose a simple yet effective image analysis-based closed-loop control system, utilizing serial communication and Python v3.12, a widely accessible software platform. The system's accuracy and robustness are evaluated, demonstrating its effectiveness in ensuring FDM-printed part quality. Notably, this control system offers superior speed in restoring part quality to normal upon defect detection and is easily implementable on commercially available FDM 3D printers, fostering decentralized quality manufacturing.
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Affiliation(s)
| | | | | | - Young Ho Park
- Department of Mechanical and Aerospace Engineering, New Mexico State University, Las Cruces, NM 88003, USA; (S.B.); (A.L.); (O.A.V.P.)
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Saura C, Modi S, Krop I, Park YH, Kim SB, Tamura K, Iwata H, Tsurutani J, Sohn J, Mathias E, Liu Y, Cathcart J, Singh J, Yamashita T. Trastuzumab deruxtecan in previously treated patients with HER2-positive metastatic breast cancer: updated survival results from a phase II trial (DESTINY-Breast01). Ann Oncol 2024; 35:302-307. [PMID: 38092229 DOI: 10.1016/j.annonc.2023.12.001] [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: 04/27/2023] [Revised: 08/02/2023] [Accepted: 12/04/2023] [Indexed: 02/25/2024] Open
Abstract
BACKGROUND Primary analysis of the multicenter, open-label, single-arm, phase II DESTINY-Breast01 trial (median follow-up 11.1 months) demonstrated durable antitumor activity with trastuzumab deruxtecan (T-DXd) in patients with human epidermal growth factor receptor 2 (HER2)-positive metastatic breast cancer (mBC) previously treated with trastuzumab emtansine (T-DM1). We report updated cumulative survival outcomes with a median follow-up of 26.5 months (data cut-off 26 March 2021). PATIENTS AND METHODS Patients with HER2-positive mBC resistant or refractory to T-DM1 received T-DXd 5.4 mg/kg intravenously every 3 weeks until disease progression, unacceptable adverse events, or withdrawal of consent. The primary endpoint was confirmed objective response rate (ORR) by independent central review (ICR). Secondary endpoints included overall survival (OS), duration of response (DoR), progression-free survival (PFS), and safety. RESULTS The ORR by ICR was 62.0% [95% confidence interval (CI) 54.5% to 69.0%] in patients who received T-DXd 5.4 mg/kg every 3 weeks (n = 184). Median OS was 29.1 months (95% CI 24.6-36.1 months). Median PFS and DoR were 19.4 months (95% CI 14.1-25.0 months) and 18.2 months (95% CI 15.0 months-not evaluable), respectively. Drug-related treatment-emergent adverse events (TEAEs) were observed in 183 patients (99.5%), and 99 patients (53.8%) had one or more grade ≥3 TEAEs. Adjudicated drug-related interstitial lung disease/pneumonitis occurred in 15.8% of patients (n = 29), of which 2.7% (n = 5) were grade 5. CONCLUSIONS These updated results provide further evidence of sustained antitumor activity of T-DXd with a consistent safety profile in heavily pretreated patients with HER2-positive mBC.
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Affiliation(s)
- C Saura
- Vall d'Hebron University Hospital, Vall d'Hebron Institute of Oncology, Barcelona, Spain.
| | - S Modi
- Memorial Sloan Kettering Cancer Center, New York
| | - I Krop
- Yale Cancer Center, New Haven, USA
| | | | - S-B Kim
- Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - K Tamura
- Shimane University Hospital, Izumo
| | - H Iwata
- Aichi Cancer Center Hospital, Nagoya
| | - J Tsurutani
- Advanced Cancer Translational Research Institute, Showa University, Tokyo, Japan
| | - J Sohn
- Yonsei Cancer Center, Yonsei University Health System, Seoul, South Korea
| | - E Mathias
- Daiichi Sankyo, Inc., Basking Ridge, USA
| | - Y Liu
- Daiichi Sankyo, Inc., Basking Ridge, USA
| | - J Cathcart
- Daiichi Sankyo, Inc., Basking Ridge, USA
| | - J Singh
- Daiichi Sankyo, Inc., Basking Ridge, USA
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Pyun JM, Park YH, Youn YC, Kang MJ, Shim KH, Jang JW, You J, Nho K, Kim S. Characteristics of discordance between amyloid positron emission tomography and plasma amyloid-β 42/40 positivity. Transl Psychiatry 2024; 14:88. [PMID: 38341444 PMCID: PMC10858862 DOI: 10.1038/s41398-024-02766-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 01/08/2024] [Accepted: 01/10/2024] [Indexed: 02/12/2024] Open
Abstract
Various plasma biomarkers for amyloid-β (Aβ) have shown high predictability of amyloid PET positivity. However, the characteristics of discordance between amyloid PET and plasma Aβ42/40 positivity are poorly understood. Thorough interpretation of discordant cases is vital as Aβ plasma biomarker is imminent to integrate into clinical guidelines. We aimed to determine the characteristics of discordant groups between amyloid PET and plasma Aβ42/40 positivity, and inter-assays variability depending on plasma assays. We compared tau burden measured by PET, brain volume assessed by MRI, cross-sectional cognitive function, longitudinal cognitive decline and polygenic risk score (PRS) between PET/plasma groups (PET-/plasma-, PET-/plasma+, PET+/plasma-, PET+/plasma+) using Alzheimer's Disease Neuroimaging Initiative database. Additionally, we investigated inter-assays variability between immunoprecipitation followed by mass spectrometry method developed at Washington University (IP-MS-WashU) and Elecsys immunoassay from Roche (IA-Elc). PET+/plasma+ was significantly associated with higher tau burden assessed by PET in entorhinal, Braak III/IV, and Braak V/VI regions, and with decreased volume of hippocampal and precuneus regions compared to PET-/plasma-. PET+/plasma+ showed poor performances in global cognition, memory, executive and daily-life function, and rapid cognitive decline. PET+/plasma+ was related to high PRS. The PET-/plasma+ showed intermediate changes between PET-/plasma- and PET+/plasma+ in terms of tau burden, hippocampal and precuneus volume, cross-sectional and longitudinal cognition, and PRS. PET+/plasma- represented heterogeneous characteristics with most prominent variability depending on plasma assays. Moreover, IP-MS-WashU showed more linear association between amyloid PET standardized uptake value ratio and plasma Aβ42/40 than IA-Elc. IA-Elc showed more plasma Aβ42/40 positivity in the amyloid PET-negative stage than IP-MS-WashU. Characteristics of PET-/plasma+ support plasma biomarkers as early biomarker of amyloidopathy prior to amyloid PET. Various plasma biomarker assays might be applied distinctively to detect different target subjects or disease stages.
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Affiliation(s)
- Jung-Min Pyun
- Department of Neurology, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine, 59, Daesagwan-ro, Yongsan-gu, Seoul, 04401, Republic of Korea
| | - Young Ho Park
- Department of Neurology, Seoul National University Bundang Hospital and Seoul National University College of Medicine, 82, Gumi-ro 173 Beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, 13620, Republic of Korea
| | - Young Chul Youn
- Department of Neurology, Chung-Ang University Hospital, 102, Heukseok-ro, Dongjak-gu, Seoul, 06973, Republic of Korea
| | - Min Ju Kang
- Department of Neurology, Veterans Health Service Medical Center, 53, Jinhwangdo-ro 61-gil, Gangdong-gu, Seoul, 05368, Republic of Korea
| | - Kyu Hwan Shim
- Department of Bionano Technology, Gachon University, 1342, Seongnamdaero, Sujeong-gu, Seongnam-si, Gyeonggi-do, 13120, Republic of Korea
| | - Jae-Won Jang
- Department of Neurology, Kangwon National University Hospital, Kangwon National University College of Medicine, 156, Baengnyeong-ro, Chuncheon-si, Gangwon-do, 24289, Republic of Korea
| | - Jihwan You
- Department of Neurology, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine, 59, Daesagwan-ro, Yongsan-gu, Seoul, 04401, Republic of Korea
| | - Kwangsik Nho
- Department of Radiology and Imaging Sciences, and the Indiana Alzheimer Disease Center, Indiana University School of Medicine, 355 W 16th, GH 4101, Indianapolis, IN, 46202, USA
- Center for Computational Biology and Bioinformatics, Indiana University School of Medicine, 410 W 10th, Health Information and Translational Science Building, Suite 5000, Indianapolis, IN, 46202, USA
| | - SangYun Kim
- Department of Neurology, Seoul National University Bundang Hospital and Seoul National University College of Medicine, 82, Gumi-ro 173 Beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, 13620, Republic of Korea.
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Han SW, Pyun JM, Bice PJ, Bennett DA, Saykin AJ, Kim SY, Park YH, Nho K. miR-129-5p as a biomarker for pathology and cognitive decline in Alzheimer's disease. Alzheimers Res Ther 2024; 16:5. [PMID: 38195609 PMCID: PMC10775662 DOI: 10.1186/s13195-023-01366-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Accepted: 12/04/2023] [Indexed: 01/11/2024]
Abstract
BACKGROUND Alzheimer's dementia (AD) pathogenesis involves complex mechanisms, including microRNA (miRNA) dysregulation. Integrative network and machine learning analysis of miRNA can provide insights into AD pathology and prognostic/diagnostic biomarkers. METHODS We performed co-expression network analysis to identify network modules associated with AD, its neuropathology markers, and cognition using brain tissue miRNA profiles from the Religious Orders Study and Rush Memory and Aging Project (ROS/MAP) (N = 702) as a discovery dataset. We performed association analysis of hub miRNAs with AD, its neuropathology markers, and cognition. After selecting target genes of the hub miRNAs, we performed association analysis of the hub miRNAs with their target genes and then performed pathway-based enrichment analysis. For replication, we performed a consensus miRNA co-expression network analysis using the ROS/MAP dataset and an independent dataset (N = 16) from the Gene Expression Omnibus (GEO). Furthermore, we performed a machine learning approach to assess the performance of hub miRNAs for AD classification. RESULTS Network analysis identified a glucose metabolism pathway-enriched module (M3) as significantly associated with AD and cognition. Five hub miRNAs (miR-129-5p, miR-433, miR-1260, miR-200a, and miR-221) of M3 had significant associations with AD clinical and/or pathologic traits, with miR129-5p by far the strongest across all phenotypes. Gene-set enrichment analysis of target genes associated with their corresponding hub miRNAs identified significantly enriched biological pathways including ErbB, AMPK, MAPK, and mTOR signaling pathways. Consensus network analysis identified two AD-associated consensus network modules and two hub miRNAs (miR-129-5p and miR-221). Machine learning analysis showed that the AD classification performance (area under the curve (AUC) = 0.807) of age, sex, and APOE ε4 carrier status was significantly improved by 6.3% with inclusion of five AD-associated hub miRNAs. CONCLUSIONS Integrative network and machine learning analysis identified miRNA signatures, especially miR-129-5p, as associated with AD, its neuropathology markers, and cognition, enhancing our understanding of AD pathogenesis and leading to better performance of AD classification as potential diagnostic/prognostic biomarkers.
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Affiliation(s)
- Sang-Won Han
- Department of Neurology, Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, 77 Sakju-ro, Chuncheon-si, Gangwon-do, 24253, Republic of Korea
| | - Jung-Min Pyun
- Department of Neurology, Soonchunhyang University Seoul Hospital, 59 Daesagwan-ro, Yongsan-gu, Seoul, 03080, Republic of Korea
| | - Paula J Bice
- Department of Radiology and Imaging Sciences, Center for Computational Biology and Bioinformatics, Indiana Alzheimer's Disease Research Center, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - David A Bennett
- Rush Alzheimer's Disease Center, Rush University Medical Center, 1750 W. Harrison St., Suite 1000, Chicago, IL, 60612, USA
| | - Andrew J Saykin
- Department of Radiology and Imaging Sciences, Center for Computational Biology and Bioinformatics, Indiana Alzheimer's Disease Research Center, Indiana University School of Medicine, Indianapolis, IN, 46202, USA
| | - Sang Yun Kim
- Department of Neurology, Seoul National University Bundang Hospital and Seoul National University College of Medicine, 82, Gumi-ro 173 beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, 13620, Republic of Korea
| | - Young Ho Park
- Department of Neurology, Seoul National University Bundang Hospital and Seoul National University College of Medicine, 82, Gumi-ro 173 beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, 13620, Republic of Korea.
| | - Kwangsik Nho
- Department of Radiology and Imaging Sciences, Center for Computational Biology and Bioinformatics, Indiana Alzheimer's Disease Research Center, Indiana University School of Medicine, Indianapolis, IN, 46202, USA.
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Pyun J, Park YH, Wang J, Bennett DA, Bice PJ, Kim JP, Kim S, Saykin AJ, Nho K. Transcriptional risk scores in Alzheimer's disease: From pathology to cognition. Alzheimers Dement 2024; 20:243-252. [PMID: 37563770 PMCID: PMC10840812 DOI: 10.1002/alz.13406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 06/28/2023] [Accepted: 07/03/2023] [Indexed: 08/12/2023]
Abstract
INTRODUCTION Our previously developed blood-based transcriptional risk scores (TRS) showed associations with diagnosis and neuroimaging biomarkers for Alzheimer's disease (AD). Here, we developed brain-based TRS. METHODS We integrated AD genome-wide association study summary and expression quantitative trait locus data to prioritize target genes using Mendelian randomization. We calculated TRS using brain transcriptome data of two independent cohorts (N = 878) and performed association analysis of TRS with diagnosis, amyloidopathy, tauopathy, and cognition. We compared AD classification performance of TRS with polygenic risk scores (PRS). RESULTS Higher TRS values were significantly associated with AD, amyloidopathy, tauopathy, worse cognition, and faster cognitive decline, which were replicated in an independent cohort. The AD classification performance of PRS was increased with the inclusion of TRS up to 16% with the area under the curve value of 0.850. DISCUSSION Our results suggest brain-based TRS improves the AD classification of PRS and may be a potential AD biomarker. HIGHLIGHTS Transcriptional risk score (TRS) is developed using brain RNA-Seq data. Higher TRS values are shown in Alzheimer's disease (AD). TRS improves the AD classification power of PRS up to 16%. TRS is associated with AD pathology presence. TRS is associated with worse cognitive performance and faster cognitive decline.
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Affiliation(s)
- Jung‐Min Pyun
- Department of NeurologySoonchunhyang University Seoul HospitalSoonchunhyang University College of MedicineYongsan‐guSeoulRepublic of Korea
| | - Young Ho Park
- Department of NeurologySeoul National University College of MedicineSeoul National University Bundang HospitalSeongnam‐siGyeonggi‐doRepublic of Korea
| | - Jiebiao Wang
- Department of BiostatisticsUniversity of PittsburghPittsburghPennsylvaniaUSA
| | - David A. Bennett
- Department of Neurological ScienceRush Alzheimer's Disease CenterRush University Medical CenterChicagoIllinoisUSA
| | - Paula J. Bice
- Department of Radiology and Imaging Sciencesand the Indiana Alzheimer Disease CenterIndiana University School of MedicineIndianapolisIndianaUSA
| | - Jun Pyo Kim
- Department of Radiology and Imaging Sciencesand the Indiana Alzheimer Disease CenterIndiana University School of MedicineIndianapolisIndianaUSA
| | - SangYun Kim
- Department of NeurologySeoul National University College of MedicineSeoul National University Bundang HospitalSeongnam‐siGyeonggi‐doRepublic of Korea
| | - Andrew J. Saykin
- Department of Radiology and Imaging Sciencesand the Indiana Alzheimer Disease CenterIndiana University School of MedicineIndianapolisIndianaUSA
- Department of Medical and Molecular GeneticsIndiana University School of MedicineIndianapolisIndianaUSA
| | - Kwangsik Nho
- Department of Radiology and Imaging Sciencesand the Indiana Alzheimer Disease CenterIndiana University School of MedicineIndianapolisIndianaUSA
- Center for Computational Biology and BioinformaticsIndiana University School of Medicine, Health Information and Translational Science BuildingIndianapolisIndianaUSA
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Na S, Kang DW, Kim GH, Kim KW, Kim Y, Kim HJ, Park KH, Park YH, Byeon G, Suh J, Shin JH, Shim Y, Yang Y, Um YH, Oh SI, Wang SM, Yoon B, Yoon HJ, Lee SM, Lee J, Lee JS, Rhee HY, Lim JS, Jung YH, Chin J, Hong YJ, Jang H, Choi H, Choi M, Jang JW. The Usefulness of 18F-FDG PET to Differentiate Subtypes of Dementia: The Systematic Review and Meta-Analysis. Dement Neurocogn Disord 2024; 23:54-66. [PMID: 38362056 PMCID: PMC10864694 DOI: 10.12779/dnd.2024.23.1.54] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 01/22/2024] [Accepted: 01/22/2024] [Indexed: 02/17/2024] Open
Abstract
Background and Purpose Dementia subtypes, including Alzheimer's dementia (AD), dementia with Lewy bodies (DLB), and frontotemporal dementia (FTD), pose diagnostic challenges. This review examines the effectiveness of 18F-Fluorodeoxyglucose Positron Emission Tomography (18F-FDG PET) in differentiating these subtypes for precise treatment and management. Methods A systematic review following Preferred Reporting Items for Systematic reviews and Meta-Analyses guidelines was conducted using databases like PubMed and Embase to identify studies on the diagnostic utility of 18F-FDG PET in dementia. The search included studies up to November 16, 2022, focusing on peer-reviewed journals and applying the gold-standard clinical diagnosis for dementia subtypes. Results From 12,815 articles, 14 were selected for final analysis. For AD versus FTD, the sensitivity was 0.96 (95% confidence interval [CI], 0.88-0.98) and specificity was 0.84 (95% CI, 0.70-0.92). In the case of AD versus DLB, 18F-FDG PET showed a sensitivity of 0.93 (95% CI 0.88-0.98) and specificity of 0.92 (95% CI, 0.70-0.92). Lastly, when differentiating AD from non-AD dementias, the sensitivity was 0.86 (95% CI, 0.80-0.91) and the specificity was 0.88 (95% CI, 0.80-0.91). The studies mostly used case-control designs with visual and quantitative assessments. Conclusions 18F-FDG PET exhibits high sensitivity and specificity in differentiating dementia subtypes, particularly AD, FTD, and DLB. This method, while not a standalone diagnostic tool, significantly enhances diagnostic accuracy in uncertain cases, complementing clinical assessments and structural imaging.
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Affiliation(s)
- Seunghee Na
- Department of Neurology, Incheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Incheon, Korea
| | - Dong Woo Kang
- Department of Psychiatry, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Geon Ha Kim
- Department of Neurology, Ewha Womans University Mokdong Hospital, Ewha Womans University College of Medicine, Seoul, Korea
| | - Ko Woon Kim
- Department of Neurology, Jeonbuk National University Hospital, Jeonbuk National University College of Medicine, Jeonju, Korea
| | - Yeshin Kim
- Department of Neurology, Kangwon National University Hospital, Kangwon National University College of Medicine, Chuncheon, Korea
| | - Hee-Jin Kim
- Department of Neurology, Hanyang University Hospital, College of Medicine, Hanyang University, Seoul, Korea
| | - Kee Hyung Park
- Department of Neurology, College of Medicine, Gachon University Gil Medical Center, Incheon, Korea
| | - Young Ho Park
- Department of Neurology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - Gihwan Byeon
- Department of Psychiatry, Kangwon National University Hospital, Kangwon National University College of Medicine, Chuncheon, Korea
| | - Jeewon Suh
- Department of Neurology, National Medical Center, Seoul, Korea
| | | | - YongSoo Shim
- Department of Neurology, Eunpyeong St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - YoungSoon Yang
- Department of Neurology, Soonchunhyang University Cheonan Hospital, Soonchunhyang University School of Medicine, Cheonan, Korea
| | - Yoo Hyun Um
- Department of Psychiatry, St. Vincent’s Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea
| | - Seong-il Oh
- Department of Neurology, Kyung Hee University Hospital, Kyung Hee University College of Medicine, Seoul, Korea
| | - Sheng-Min Wang
- Department of Psychiatry, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Bora Yoon
- Department of Neurology, Konyang University Hospital, Konyang University College of Medicine, Daejeon, Korea
| | - Hai-Jeon Yoon
- Department of Nuclear Medicine, Ewha Womans University College of Medicine, Seoul, Korea
| | - Sun Min Lee
- Department of Neurology, Ajou University Hospital, Ajou University School of Medicine, Suwon, Korea
| | - Juyoun Lee
- Department of Neurology, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, Korea
| | - Jin San Lee
- Department of Neurology, Kyung Hee University Hospital, Kyung Hee University College of Medicine, Seoul, Korea
| | - Hak Young Rhee
- Department of Neurology, Kyung Hee University Hospital at Gangdong, Kyung Hee University College of Medicine, Seoul, Korea
| | - Jae-Sung Lim
- Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Young Hee Jung
- Department of Neurology, Myungji Hospital, Goyang, Korea
| | - Juhee Chin
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Yun Jeong Hong
- Department of Neurology, Uijeongbu St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Uijeongbu, Korea
| | - Hyemin Jang
- Department of Neurology, Seoul National University Hospital, Seoul, Korea
| | - Hongyoon Choi
- Department of Nuclear Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Miyoung Choi
- Division of Healthcare Technology Assessment Research, National Evidence-based Healthcare Collaborating Agency, Seoul, Korea
| | - Jae-Won Jang
- Department of Neurology, Kangwon National University Hospital, Kangwon National University College of Medicine, Chuncheon, Korea
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Han SW, Lee SH, Kim JH, Lee JJ, Park YH, Kim S, Nho K, Sohn JH. Association of Serum Liver Enzymes with Brain Amyloidopathy and Cognitive Performance. J Alzheimers Dis Rep 2023; 7:1465-1474. [PMID: 38225965 PMCID: PMC10789293 DOI: 10.3233/adr-230148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Accepted: 12/04/2023] [Indexed: 01/17/2024] Open
Abstract
Background Alzheimer's disease (AD) is characterized by amyloid-β (Aβ) plaque accumulation and neurofibrillary tangles in the brain. Emerging evidence has suggested potential interactions between the brain and periphery, particularly the liver, in regulating Aβ homeostasis. Objective This study aimed to investigate the association of serum liver enzymes with brain amyloidopathy and cognitive performance in patients with complaints of cognitive decline. Methods A total of 1,036 patients (mean age 74 years, 66.2% female) with subjective cognitive decline, mild cognitive impairment, AD dementia, and other neurodegenerative diseases were included using the Smart Clinical Data Warehouse. Amyloid positron emission tomography (PET) imaging, comprehensive neuropsychological evaluations, and measurements of liver enzymes, including aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase, total bilirubin, and albumin, were assessed. After propensity score matching, logistic and linear regression analyses were used to investigate the associations between liver enzymes, amyloid status, and cognitive performance. Additionally, a machine learning approach was used to assess the classification performance of liver enzymes in predicting amyloid PET positivity. Results Lower ALT levels and higher AST-to-ALT ratios were significantly associated with amyloid PET positivity and AD diagnosis. The AST-to-ALT ratio was also significantly associated with poor memory function. Machine learning analysis revealed that the classification performance of amyloid status (AUC = 0.642) for age, sex, and apolipoprotein E ɛ4 carrier status significantly improved by 6.2% by integrating the AST-to-ALT ratio. Conclusions These findings highlight the potential association of liver function on AD and its potential as a diagnostic and therapeutic implications.
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Affiliation(s)
- Sang-Won Han
- Department of Neurology, Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, Gangwon-do, Republic of Korea
| | - Sang-Hwa Lee
- Department of Neurology, Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, Gangwon-do, Republic of Korea
| | - Jong Ho Kim
- Department of Anesthesiology and Pain Medicine, Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, Chuncheon-si, Gangwon-do, Republic of Korea
| | - Jae-Jun Lee
- Department of Anesthesiology and Pain Medicine, Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, Chuncheon-si, Gangwon-do, Republic of Korea
- Institute of New Frontier Research Team, Hallym University, Chuncheon-si, Gangwon-do, Republic of Korea
| | - Young Ho Park
- Department of Neurology, Seoul National University Bundang Hospital and Seoul National University College of Medicine, Bundang-gu, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - SangYun Kim
- Department of Neurology, Seoul National University Bundang Hospital and Seoul National University College of Medicine, Bundang-gu, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Kwangsik Nho
- Department of Radiology and Imaging Sciences, Center for Computational Biology and Bioinformatics, Indiana Alzheimer’s Disease Research Center, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Jong-Hee Sohn
- Department of Neurology, Chuncheon Sacred Heart Hospital, Hallym University College of Medicine, Gangwon-do, Republic of Korea
- Institute of New Frontier Research Team, Hallym University, Chuncheon-si, Gangwon-do, Republic of Korea
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Bagyinszky E, Kim M, Park YH, An SSA, Kim S. PSEN1 His214Asn Mutation in a Korean Patient with Familial EOAD and the Importance of Histidine-Tryptophan Interactions in TM-4 Stability. Int J Mol Sci 2023; 25:116. [PMID: 38203287 PMCID: PMC10778985 DOI: 10.3390/ijms25010116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 12/16/2023] [Accepted: 12/19/2023] [Indexed: 01/12/2024] Open
Abstract
A pathogenic mutation in presenilin-1 (PSEN1), His214Asn, was found in a male patient with memory decline at the age of 41 in Korea for the first time. The proband patient was associated with a positive family history from his father, paternal aunt, and paternal grandmother without genetic testing. He was diagnosed with early onset Alzheimer's disease (EOAD). PSEN1 His214Asn was initially reported in an Italian family, where the patient developed phenotypes similar to the current proband patient. Magnetic resonance imaging (MRI) scans revealed a mild hippocampal atrophy. The amyloid positron emission tomography (amyloid-PET) was positive, along with the positive test results of the increased amyloid ß (Aβ) oligomerization tendency with blood. The PSEN1 His214 amino acid position plays a significant role in the gamma-secretase function, especially from three additional reported mutations in this residue: His214Asp, His214Tyr, and His214Arg. The structure prediction model revealed that PSEN1 protein His214 may interact with Trp215 of His-Trp cation-π interaction, and the mutations of His214 would destroy this interaction. The His-Trp cation-π interaction between His214 and Trp215 would play a crucial structural role in stabilizing the 4th transmembrane domain of PSEN1 protein, especially when aromatic residues were often reported in the membrane interface of the lipid-extracellular region of alpha helices or beta sheets. The His214Asn would alter the cleavage dynamics of gamma-secretase from the disappeared interactions between His214 and Trp215 inside of the helix, resulting in elevated amyloid production. Hence, the increased Aβ was reflected in the increased Aβ oligomerization tendency and the accumulations of Aβ in the brain from amyloid-PET, leading to EOAD.
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Affiliation(s)
- Eva Bagyinszky
- Department of Industrial and Environmental Engineering, Graduate School of Environment, Gachon University, Seongnam 13120, Republic of Korea;
| | - Minju Kim
- Department of Neurology, Seoul National University College of Medicine & Clinical Neuroscience Center, Seoul National University Bundang Hospital, Seongnam 13620, Republic of Korea; (M.K.); (Y.H.P.)
| | - Young Ho Park
- Department of Neurology, Seoul National University College of Medicine & Clinical Neuroscience Center, Seoul National University Bundang Hospital, Seongnam 13620, Republic of Korea; (M.K.); (Y.H.P.)
| | - Seong Soo A. An
- Department of Bionano Technology, Gachon Medical Research Institute, Gachon University, Seongnam 13120, Republic of Korea
| | - SangYun Kim
- Department of Neurology, Seoul National University College of Medicine & Clinical Neuroscience Center, Seoul National University Bundang Hospital, Seongnam 13620, Republic of Korea; (M.K.); (Y.H.P.)
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Kim D, Ryoo N, Park YH, Bagyinszky E, An SSA, Kim S. A Novel Mutation in Sacsin, p.Val1335IIe, May Cause Late-Onset Sacsinopathy Due to Haploinsufficiency. Curr Issues Mol Biol 2023; 45:9917-9925. [PMID: 38132465 PMCID: PMC10741900 DOI: 10.3390/cimb45120619] [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: 11/25/2023] [Revised: 12/06/2023] [Accepted: 12/07/2023] [Indexed: 12/23/2023] Open
Abstract
Autosomal recessive spastic ataxia in Charlevoix-Saguenay (ARSACS) is a neurodegenerative disorder caused by mutations in the sacsin molecular chaperone protein (SACS) gene. Since the first report from Quebec in 1978, many pathogenic ARSACS variants with significantly reduced chaperone activities have been reported worldwide in adolescents, with presumably altered protein folding. In this study, a novel SACS mutation (p.Val1335IIe, Heterozygous) was identified in a Korean patient in their 50s with late-onset ARSACS characterized by cerebellar ataxia and spasticity without peripheral neuropathy. The mutation was confirmed via whole exome sequencing and Sanger sequencing and was predicted to likely cause disease using prediction software. RT-PCR and ELISA showed decreased SACS mRNA expression and sacsin protein concentrations in the proband, supporting its implications in diseases with pathogenicity and reduced chaperone function from haploinsufficiency. Our results revealed the pathogenicity of the SACS Val1335IIe mutation in the proband patient's disease manifestation, even though the symptoms had a limited correlation with the typical ARSACS clinical triad, which could be due to the reduced chaperon function from haploinsufficiency. Furthermore, our study suggests that variants of SACS heterozygosity may have diverse symptoms, with a wide range of disease onsets for late-onset sacsinopathy.
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Affiliation(s)
- Danyeong Kim
- Department of Bionano Technology, Gachon University, Seongnam 13120, Republic of Korea;
| | - Nayoung Ryoo
- Department of Neurology, Eunpyeong St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul 03083, Republic of Korea;
| | - Young Ho Park
- Department of Neurology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam 13620, Republic of Korea;
| | - Eva Bagyinszky
- Graduate School of Industrial and Environmental Engineering, Gachon University, Seongnam 13120, Republic of Korea;
| | | | - SangYun Kim
- Department of Neurology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam 13620, Republic of Korea;
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Han SW, Pyun JM, Bice PJ, Bennett DA, Saykin AJ, Kim S, Park YH, Nho K. miR-129-5p as a biomarker for pathology and cognitive decline in Alzheimer's disease. Res Sq 2023:rs.3.rs-3501125. [PMID: 37961387 PMCID: PMC10635399 DOI: 10.21203/rs.3.rs-3501125/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
Background Alzheimer's dementia (AD) pathogenesis involves complex mechanisms, including microRNA (miRNA) dysregulation. Integrative network and machine learning analysis of miRNA can provide insights into AD pathology and prognostic/diagnostic biomarkers. Methods We performed co-expression network analysis to identify network modules associated with AD, its neuropathology markers, and cognition using brain tissue miRNA profiles from the Religious Orders Study and Rush Memory and Aging Project (ROS/MAP) (N = 702) as a discovery dataset. We performed association analysis of hub miRNAs with AD, its neuropathology markers, and cognition. After selecting target genes of the hub miRNAs, we performed association analysis of the hub miRNAs with their target genes and then performed pathway-based enrichment analysis. For replication, we performed a consensus miRNA co-expression network analysis using the ROS/MAP dataset and an independent dataset (N = 16) from the Gene Expression Omnibus (GEO). Furthermore, we performed a machine learning approach to assess the performance of hub miRNAs for AD classification. Results Network analysis identified a glucose metabolism pathway-enriched module (M3) as significantly associated with AD and cognition. Five hub miRNAs (miR-129-5p, miR-433, miR-1260, miR-200a, and miR-221) of M3 had significant associations with AD clinical and/or pathologic traits, with miR129-5p by far the strongest across all phenotypes. Gene-set enrichment analysis of target genes associated with their corresponding hub miRNAs identified significantly enriched biological pathways including ErbB, AMPK, MAPK, and mTOR signaling pathways. Consensus network analysis identified two AD-associated consensus network modules, and two hub miRNAs (miR-129-5p and miR-221). Machine learning analysis showed that the AD classification performance (area under the curve (AUC) = 0.807) of age, sex, and apoE ε4 carrier status was significantly improved by 6.3% with inclusion of five AD-associated hub miRNAs. Conclusions Integrative network and machine learning analysis identified miRNA signatures, especially miR-129-5p, as associated with AD, its neuropathology markers, and cognition, enhancing our understanding of AD pathogenesis and leading to better performance of AD classification as potential diagnostic/prognostic biomarkers.
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Affiliation(s)
| | | | | | | | | | - SangYun Kim
- Seoul National University Bundang Hospital, Seoul National University College of Medicine
| | - Young Ho Park
- Seoul National University Bundang Hospital, Seoul National University College of Medicine
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Choi YJ, Wedamulla NE, Kim SH, Oh M, Seo KS, Han JS, Lee EJ, Park YH, Park YJ, Kim EK. Salvia miltiorrhiza Bunge Ameliorates Benign Prostatic Hyperplasia through Regulation of Oxidative Stress via Nrf-2/ HO-1 Activation. J Microbiol Biotechnol 2023; 34:1-14. [PMID: 37994101 DOI: 10.4014/jmb.2308.08053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 09/27/2023] [Accepted: 10/23/2023] [Indexed: 11/24/2023]
Abstract
Oxidative stress is a key factor in the pathogenesis of benign prostatic hyperplasia (BPH) that leads to inflammation. This study aimed to evaluate the ameliorative effects of Salvia miltiorrhiza Bunge extract (HLT-101) on BPH through the regulation of oxidative stress and inflammation. A testosterone propionate (TP)-induced BPH rat model was orally administered HLT-101 (20, 40, or 80 mg/kg), and its effects on oxidative stress- and inflammation-related gene expression were examined. Further, HLT-101 was assessed for its effect on reactive oxygen species (ROS) levels and Nrf-2/HO-1 signaling pathways in BPH-1 cells. HLT-101 decreased testosterone-induced excessive free radical production and inflammatory factor activation. Moreover, HLT-101 treatment significantly decreased the intracellular ROS level in the TNF-α and IFN-γ treated BPH-1 cells through the activation of Nrf-2. In addition, HLT-101 treatment inhibited the NF-κB pathway and androgen receptor (AR) signaling, which is highly linked to the pathogenesis of BPH. Therefore, HLT-101 has the potential to be an effective treatment reagent for BPH because of its ability to reduce inflammation and oxidative stress via Nrf-2/HO-1 signaling.
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Affiliation(s)
- Young-Jin Choi
- Department of Food Science and Nutrition, Dong-A University, Busan 49315, Republic of Korea
- Department of Health Sciences, the Graduate School of Dong-A University, Busan 49315, Republic of Korea
| | - Nishala Erandi Wedamulla
- Department of Food Science and Nutrition, Dong-A University, Busan 49315, Republic of Korea
- Department of Health Sciences, the Graduate School of Dong-A University, Busan 49315, Republic of Korea
- Department of Food Science and Technology, Faculty of Animal Science and Export Agriculture, Uva Wellassa University, Badulla 90000, Sri Lanka
| | - Seok-Hee Kim
- Department of Food Science and Nutrition, Dong-A University, Busan 49315, Republic of Korea
- Department of Health Sciences, the Graduate School of Dong-A University, Busan 49315, Republic of Korea
| | - Mirae Oh
- Grassland and Forages Division, National Institute of Animal Science, Rural Development Administration, Cheonan 31000, Republic of Korea
| | - Kang Sik Seo
- Curome Bioscience Co., Ltd., Suwon 16506, Republic of Korea
| | - Jeong Su Han
- Curome Bioscience Co., Ltd., Suwon 16506, Republic of Korea
| | - Eun Joo Lee
- Healthism Co., Ltd., Cheongju 28160, Republic of Korea
| | - Young Ho Park
- Healthism Co., Ltd., Cheongju 28160, Republic of Korea
| | - Young Jin Park
- Department of Family Medicine, Dong-A University College of Medicine, Busan 49315, Republic of Korea
| | - Eun-Kyung Kim
- Educational Major, Graduate School of Education, Dong-A University, Busan 49315, Republic of Korea
- Nutrinomics Lab. Co., Ltd., Busan 49315, Republic of Korea
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17
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Im SA, Gennari A, Park YH, Kim JH, Jiang ZF, Gupta S, Fadjari TH, Tamura K, Mastura MY, Abesamis-Tiambeng MLT, Lim EH, Lin CH, Sookprasert A, Parinyanitikul N, Tseng LM, Lee SC, Caguioa P, Singh M, Naito Y, Hukom RA, Smruti BK, Wang SS, Kim SB, Lee KH, Ahn HK, Peters S, Kim TW, Yoshino T, Pentheroudakis G, Curigliano G, Harbeck N. Pan-Asian adapted ESMO Clinical Practice Guidelines for the diagnosis, staging and treatment of patients with metastatic breast cancer. ESMO Open 2023; 8:101541. [PMID: 37178669 PMCID: PMC10186487 DOI: 10.1016/j.esmoop.2023.101541] [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: 09/27/2022] [Revised: 03/27/2023] [Accepted: 04/01/2023] [Indexed: 05/15/2023] Open
Abstract
The most recent version of the European Society for Medical Oncology (ESMO) Clinical Practice Guidelines for the diagnosis, staging and treatment of patients with metastatic breast cancer (MBC) was published in 2021. A special, hybrid guidelines meeting was convened by ESMO and the Korean Society of Medical Oncology (KSMO) in collaboration with nine other Asian national oncology societies in May 2022 in order to adapt the ESMO 2021 guidelines to take into account the differences associated with the treatment of MBC in Asia. These guidelines represent the consensus opinions reached by a panel of Asian experts in the treatment of patients with MBC representing the oncological societies of China (CSCO), India (ISMPO), Indonesia (ISHMO), Japan (JSMO), Korea (KSMO), Malaysia (MOS), the Philippines (PSMO), Singapore (SSO), Taiwan (TOS) and Thailand (TSCO). The voting was based on the best available scientific evidence and was independent of drug access or practice restrictions in the different Asian countries. The latter were discussed when appropriate. The aim of these guidelines is to provide guidance for the harmonisation of the management of patients with MBC across the different regions of Asia, drawing from data provided by global and Asian trials whilst at the same time integrating the differences in genetics, demographics and scientific evidence, together with restricted access to certain therapeutic strategies.
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Affiliation(s)
- S-A Im
- Department of Internal Medicine, Seoul National University Hospital, Cancer Research Institute, Seoul National University College of Medicine, Seoul National University, Seoul, Republic of Korea.
| | - A Gennari
- Department of Translational Medicine, University Piemonte Orientale, Novara, Italy
| | - Y H Park
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - J H Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seoul National University, Seoul, Republic of Korea
| | - Z-F Jiang
- Department of Oncology, The Fifth Medical Center of PLA General Hospital, Beijing, China
| | - S Gupta
- Tata Memorial Centre and Homi Bhabha National Institute, Mumbai, India
| | - T H Fadjari
- Department of Internal Medicine, Hasan Sadikin General Hospital, Bandung, Indonesia
| | - K Tamura
- Department of Medical Oncology, Shimane University Hospital, Shimane, Japan
| | - M Y Mastura
- Cancer Centre, Pantai Hospital Kuala Lumpur, Kuala Lumpur, Malaysia
| | - M L T Abesamis-Tiambeng
- Section of Medical Oncology, Department of Internal Medicine, Cardinal Santos Cancer Center, San Juan, The Philippines
| | - E H Lim
- Division of Medical Oncology, National Cancer Centre Singapore, Singapore, Singapore
| | - C-H Lin
- Department of Medical Oncology, National Taiwan University Hospital, Cancer Center Branch, Taipei, Taiwan
| | - A Sookprasert
- Department of Internal Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - N Parinyanitikul
- Medical Oncology Unit, Department of Medicine, Faculty of Medicine, King Chulalongkorn Memorial Hospital and Chulalongkorn University, Bangkok, Thailand
| | - L-M Tseng
- Taipei-Veterans General Hospital, Taipei, Taiwan; School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - S-C Lee
- Department of Haematology-Oncology, National University Cancer Institute, Singapore (NCIS), Singapore, Singapore
| | - P Caguioa
- The Cancer Institute of St Luke's Medical Center, National Capital Region, The Philippines; The Cancer Institute of the University of Santo Tomas Hospital, National Capital Region, The Philippines
| | - M Singh
- Department of Radiotherapy, Pantai Cancer Institute, Pantai Hospital Kuala Lumpur, Kuala Lumpur, Malaysia; Department of Oncology, Pantai Cancer Institute, Pantai Hospital Kuala Lumpur, Kuala Lumpur, Malaysia
| | - Y Naito
- Department of General Internal Medicine, National Cancer Center Hospital East, Kashiwa, Japan
| | - R A Hukom
- Department of Hematology and Medical Oncology, Dharmais Hospital (National Cancer Center), Jakarta, Indonesia
| | - B K Smruti
- Medical Oncology, Lilavati Hospital and Research Centre and Bombay Hospital Institute of Medical Sciences, Mumbai, India
| | - S-S Wang
- Cancer Center, Sun Yat-sen University, Guangzhou, China
| | - S B Kim
- Department of Oncology, Asan Medical Centre, Seoul, Republic of Korea
| | - K-H Lee
- Department of Internal Medicine, Seoul National University Hospital, Cancer Research Institute, Seoul National University College of Medicine, Seoul National University, Seoul, Republic of Korea
| | - H K Ahn
- Division of Medical Oncology, Department of Internal Medicine, Gachon University Gil Medical Center, Incheon, Republic of Korea
| | - S Peters
- Oncology Department, Lausanne University Hospital (CHUV), Lausanne, Switzerland
| | - T W Kim
- Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - T Yoshino
- Department of Gastroenterology and Gastrointestinal Oncology, National Cancer Center Hospital East, Kashiwa, Japan
| | | | - G Curigliano
- Istituto Europeo di Oncologia, IRCCS, Milan, Italy; Department of Oncology and Haematology, University of Milano, Milan, Italy
| | - N Harbeck
- Breast Center, Department of Obstetrics and Gynaecology and Comprehensive Cancer Center Munich, LMU University Hospital, Munich, Germany
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18
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Pyun JM, Park YH, Wang J, Bice PJ, Bennett DA, Kim S, Saykin AJ, Nho K. Aberrant GAP43 Gene Expression Is Alzheimer Disease Pathology-Specific. Ann Neurol 2023; 93:1047-1048. [PMID: 36897291 PMCID: PMC10464844 DOI: 10.1002/ana.26637] [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: 11/29/2022] [Accepted: 12/15/2022] [Indexed: 03/11/2023]
Affiliation(s)
- Jung-Min Pyun
- Department of Neurology, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine, Seoul, Republic of Korea
| | - Young Ho Park
- Department of Neurology, Seoul National University Bundang Hospital and Seoul National University College of Medicine, Seongnam, Republic of Korea
| | - Jiebiao Wang
- Department of Biostatistics, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Paula J Bice
- Department of Radiology and Imaging Sciences, and Indiana Alzheimer Disease Center, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - David A Bennett
- Rush Alzheimer's Disease Center, Rush University Medical Center, Chicago, Illinois, USA
| | - SangYun Kim
- Department of Neurology, Seoul National University Bundang Hospital and Seoul National University College of Medicine, Seongnam, Republic of Korea
| | - Andrew J Saykin
- Department of Radiology and Imaging Sciences, and Indiana Alzheimer Disease Center, Indiana University School of Medicine, Indianapolis, Indiana, USA
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Kwangsik Nho
- Department of Radiology and Imaging Sciences, and Indiana Alzheimer Disease Center, Indiana University School of Medicine, Indianapolis, Indiana, USA
- Center for Computational Biology and Bioinformatics, Indiana University School of Medicine, Indianapolis, Indiana, USA
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19
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Pyun JM, Youn YC, Park YH, Kim S. Integration of amyloid-β oligomerization tendency as a plasma biomarker in Alzheimer's disease diagnosis. Front Neurol 2023; 13:1028448. [PMID: 36733444 PMCID: PMC9886866 DOI: 10.3389/fneur.2022.1028448] [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] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 12/20/2022] [Indexed: 01/18/2023] Open
Abstract
Introduction There has been significant development in blood-based biomarkers targeting amyloidopathy of Alzheimer's disease (AD). However, the guidelines for integrating such biomarkers into AD diagnosis are still inadequate. Multimer Detection System-Oligomeric Amyloid-β (MDS-OAβ) as a plasma biomarker detecting oligomerization tendency is available in the clinical practice. Main text We suggest how to interpret the results of plasma biomarker for amyloidopathy using MDS-OAβ with neuropsychological test, brain magnetic resonance imaging (MRI), and amyloid PET for AD diagnosis. Combination of each test result differentiates various stages of AD, other neurodegenerative diseases, or cognitive impairment due to the causes other than neurodegeneration. Discussion A systematic interpretation strategy could support accurate diagnosis and staging of AD. Moreover, comprehensive use of biomarkers that target amyloidopathy such as amyloid PET on brain amyloid plaque and MDS-OAβ on amyloid-β oligomerization tendency can complement to gain advanced insights on amyloid-β dynamics in AD.
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Affiliation(s)
- Jung-Min Pyun
- Department of Neurology, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine, Seoul, Republic of Korea
| | - Young Chul Youn
- Department of Neurology, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Young Ho Park
- Department of Neurology, Seoul National University College of Medicine and Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - SangYun Kim
- Department of Neurology, Seoul National University College of Medicine and Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea,*Correspondence: SangYun Kim ✉
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Park YH, Kim D, Hiragond CB, Lee J, Jung JW, Cho CH, In I, In SI. Phase-controlled 1T/2H-MoS2 interaction with reduced TiO2 for highly stable photocatalytic CO2 reduction into CO. J CO2 UTIL 2023. [DOI: 10.1016/j.jcou.2022.102324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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21
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Kim D, Shim KH, Bagyinszky E, Van Vo G, Kang MJ, Senanarong V, Limwongse C, Shin S, Jeong S, Kim J, Park YH, Youn YC, Kim S, An SS. Characteristics of β‐secretase activity on APP‐V604M and APP‐V669L. Alzheimers Dement 2022. [DOI: 10.1002/alz.064382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Danyeong Kim
- Department of Bionano Technology, Gachon University Seongnam Korea, Republic of (South)
| | - Kyu Hwan Shim
- Department of Bionano Technology, Gachon University Seongnam Korea, Republic of (South)
| | - Eva Bagyinszky
- Graduate School of Environment Department of Industrial and Environmental Engineering, Gachon University Seongnam Korea, Republic of (South)
| | - Giau Van Vo
- School of Medicine, Vietnam National University Ho Chi Minh City Viet Nam
| | - Min Ju Kang
- Veterans Health Service Medical Center Seoul Korea, Republic of (South)
| | - Vorapun Senanarong
- Faculty of Medicine Siriraj Hospital, Mahidol University Bangkok Thailand
| | - Chanin Limwongse
- Faculty of Medicine, Siriraj Hospital, Mahidol University Bangkok Thailand
| | - Seunghwan Shin
- Department of Bionano Technology, Gachon University Seongnam Korea, Republic of (South)
| | - SoonPyo Jeong
- Department of Bionano Technology, Gachon University Seongnam Korea, Republic of (South)
| | - Jongsung Kim
- Department of Chemical and Biological Engineering, Gachon University Seongnam Korea, Republic of (South)
| | - Young Ho Park
- Seoul National University Bundang Hospital Seongnam Korea, Republic of (South)
| | - Young Chul Youn
- Chung‐Ang University Hospital Seoul Korea, Republic of (South)
| | - SangYun Kim
- Seoul National University Bundang Hospital Seongnam Korea, Republic of (South)
| | - Seong Soo An
- Department of Bionano Technology, Gachon University Seongnam Korea, Republic of (South)
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22
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Cabrales-Arellano P, Park E, Minor M, Delgado E, Valles-Rosales D, Taboada H, Espiritu J, Su J, Park YH. Rapid identification of Staphylococcus aureus based on a fluorescence imaging/detection platform that combines loop mediated isothermal amplification assay and the smartphone-based system. Sci Rep 2022; 12:20655. [PMID: 36450878 PMCID: PMC9712598 DOI: 10.1038/s41598-022-25190-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 11/25/2022] [Indexed: 12/05/2022] Open
Abstract
Food associated diseases pose significant public health threat in the United States. Health risks associated with food-borne pathogens drive the need for constant monitoring of food products. An efficient method that can diagnose food-borne pathogens rapidly will be invaluable and in high demand. In this study, we showed the feasibility of a novel rapid detection platform based on fluorescence imaging/detection that combines a user-friendly, portable loop mediated isothermal amplification (LAMP) reaction device and a smartphone-based detection system. The proposed platform was used to detect Staphylococcus aureus which is one of the most important food-borne pathogen especially dairy products. The complete protocol is quicker; the reaction is performed under isothermal conditions and completed in 1 h or less. Experimental results show that LAMP assays were ten-fold more sensitive than PCR-based detection. The proposed smartphone detection system was able to detect and quantify LAMP assay samples containing three different concentrations of S. aureus from 109 CFU/mL down to 103 CFU/mL. The present proof-of-concept study demonstrated that this platform offers a portable, easy to use method for measuring target pathogens with LAMP amplification.
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Affiliation(s)
- Patricia Cabrales-Arellano
- grid.24805.3b0000 0001 0687 2182Family and Consumer Science Department, New Mexico State University, Las Cruces, NM 88003 USA
| | - Edward Park
- grid.24805.3b0000 0001 0687 2182Biology Department, New Mexico State University, Las Cruces, NM 88003 USA
| | - Martha Minor
- grid.24805.3b0000 0001 0687 2182Family and Consumer Science Department, New Mexico State University, Las Cruces, NM 88003 USA
| | - Efren Delgado
- grid.24805.3b0000 0001 0687 2182Family and Consumer Science Department, New Mexico State University, Las Cruces, NM 88003 USA
| | - Delia Valles-Rosales
- grid.264760.10000 0004 0387 0036Industrial Management and Technology Department, Texas A&M University Kingsville, Kingsville, TX 78363 USA
| | - Heidi Taboada
- grid.264760.10000 0004 0387 0036Mechanical and Industrial Engineering Department, Texas A&M University Kingsville, Kingsville, TX 78363 USA
| | - José Espiritu
- grid.264760.10000 0004 0387 0036Mechanical and Industrial Engineering Department, Texas A&M University Kingsville, Kingsville, TX 78363 USA
| | - Jianzhong Su
- grid.267315.40000 0001 2181 9515Department of Mathematics, University of Texas at Arlington, Arlington, TX 76019 USA
| | - Young Ho Park
- grid.24805.3b0000 0001 0687 2182Mechanical Engineering Department, New Mexico State University, Las Cruces, NM 88003 USA
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23
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Youn YC, Kim HR, Shin HW, Jeong HB, Han SW, Pyun JM, Ryoo N, Park YH, Kim S. Prediction of amyloid PET positivity via machine learning algorithms trained with EDTA-based blood amyloid-β oligomerization data. BMC Med Inform Decis Mak 2022; 22:286. [DOI: 10.1186/s12911-022-02024-z] [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] [Received: 06/27/2022] [Accepted: 10/18/2022] [Indexed: 11/09/2022] Open
Abstract
Abstract
Background
The tendency of amyloid-β to form oligomers in the blood as measured with Multimer Detection System-Oligomeric Amyloid-β (MDS-OAβ) is a valuable biomarker for Alzheimer’s disease and has been verified with heparin-based plasma. The objective of this study was to evaluate the performance of ethylenediaminetetraacetic acid (EDTA)-based MDS-OAβ and to develop machine learning algorithms to predict amyloid positron emission tomography (PET) positivity.
Methods
The performance of EDTA-based MDS-OAβ in predicting PET positivity was evaluated in 312 individuals with various machine learning models. The models with various combinations of features (i.e., MDS-OAβ level, age, apolipoprotein E4 alleles, and Mini-Mental Status Examination [MMSE] score) were tested 50 times on each dataset.
Results
The random forest model best-predicted amyloid PET positivity based on MDS-OAβ combined with other features with an accuracy of 77.14 ± 4.21% and an F1 of 85.44 ± 3.10%. The order of significance of predictive features was MDS-OAβ, MMSE, Age, and APOE. The Support Vector Machine using the MDS-OAβ value only showed an accuracy of 71.09 ± 3.27% and F−1 value of 80.18 ± 2.70%.
Conclusions
The Random Forest model using EDTA-based MDS-OAβ combined with the MMSE and apolipoprotein E status can be used to prescreen for amyloid PET positivity.
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24
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Lee Y, Yoo KD, Baek SH, Kim YG, Kim HJ, Ryu JY, Paek JH, Suh SH, Oh SW, Lee J, Jhee JH, Suh JS, Yang EM, Park YH, Kim YL, Choi M, Oh KH, Kim S. Korean Society of Nephrology 2022 recommendations on controversial issues in diagnosis and management of hyponatremia. Korean J Intern Med 2022; 37:1120-1137. [PMID: 36245341 PMCID: PMC9666265 DOI: 10.3904/kjim.2022.174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 07/06/2022] [Indexed: 11/27/2022] Open
Abstract
The Korean Society for Electrolyte and Blood Pressure Research, in collaboration with the Korean Society of Nephrology, has published a clinical practice guideline (CPG) document for hyponatremia treatment. The document is based on an extensive evidence-based review of the diagnosis, evaluation, and treatment of hyponatremia with the multidisciplinary participation of representative experts in hyponatremia with methodologist support for guideline development. This CPG consists of 12 recommendations (two for diagnosis, eight for treatment, and two for special situations) based on eight detailed topics and nine key questions. Each recommendation begins with statements graded by the strength of the recommendations and the quality of the evidence. Each statement is followed by rationale supporting the recommendations. The committee issued conditional recommendations in favor of rapid intermittent bolus administration of hypertonic saline in severe hyponatremia, the use of vasopressin receptor antagonists in heart failure with hypervolemic hyponatremia, and syndrome of inappropriate antidiuresis with moderate to severe hyponatremia, the individualization of desmopressin use, and strong recommendation on the administration of isotonic fluids as maintenance fluid therapy in hospitalized pediatric patients. We hope that this CPG will provide useful recommendations in practice, with the aim of providing clinical support for shared decision-making to improve patient outcomes.
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Affiliation(s)
- Yeonhee Lee
- Division of Nephrology, Department of Internal Medicine, Uijeongbu Eulji Medical Center, Eulji University, Uijeongbu,
Korea
| | - Kyung Don Yoo
- Division of Nephrology, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan,
Korea
| | - Seon Ha Baek
- Department of Internal Medicine, Hallym University Dongtan Sacred Heart Hospital, Hwaseong,
Korea
| | - Yang Gyun Kim
- Division of Nephrology, Department of Internal Medicine, College of Medicine, Kyung Hee University, Seoul,
Korea
| | - Hyo Jin Kim
- Division of Nephrology, Department of Internal Medicine, Pusan National University Hospital, Busan,
Korea
| | - Ji Young Ryu
- Department of Internal Medicine, Hallym University Dongtan Sacred Heart Hospital, Hwaseong,
Korea
| | - Jin Hyuk Paek
- Department of Internal Medicine, Keimyung University School of Medicine, Daegu,
Korea
| | - Sang Heon Suh
- Division of Nephrology, Department of Internal Medicine, Chonnam National University Hospital, Gwangju,
Korea
| | - Se Won Oh
- Division of Nephrology, Department of Internal Medicine, Korea University Anam Hospital, Seoul,
Korea
| | - Jeonghwan Lee
- Department of Internal Medicine, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul,
Korea
| | - Jong Hyun Jhee
- Division of Nephrology, Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul,
Korea
| | - Jin-Soon Suh
- Division of Pediatric Nephrology, Department of Pediatrics, Bucheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Bucheon,
Korea
| | - Eun Mi Yang
- Division of Pediatric Nephrology, Department of Pediatrics, Chonnam National University Hospital, Gwangju,
Korea
| | - Young Ho Park
- Department of Neurology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam,
Korea
| | - Yae Lim Kim
- Department of Biostatistics, Korea University College of Medicine, Seoul,
Korea
| | - Miyoung Choi
- Division for Healthcare Technology Assessment Research, National Evidence-Based Healthcare Collaborating Agency (NECA), Seoul,
Korea
| | - Kook-Hwan Oh
- Division of Nephrology, Department of Internal Medicine, Seoul National University Hospital, Seoul,
Korea
| | - Sejoong Kim
- Division of Nephrology, Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam,
Korea
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Murali G, Reddy Modigunta JK, Park YH, Lee JH, Rawal J, Lee SY, In I, Park SJ. A Review on MXene Synthesis, Stability, and Photocatalytic Applications. ACS Nano 2022; 16:13370-13429. [PMID: 36094932 DOI: 10.1021/acsnano.2c04750] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Photocatalytic water splitting, CO2 reduction, and pollutant degradation have emerged as promising strategies to remedy the existing environmental and energy crises. However, grafting of expensive and less abundant noble-metal cocatalysts on photocatalyst materials is a mandatory practice to achieve enhanced photocatalytic performance owing to the ability of the cocatalysts to extract electrons efficiently from the photocatalyst and enable rapid/enhanced catalytic reaction. Hence, developing highly efficient, inexpensive, and noble-metal-free cocatalysts composed of earth-abundant elements is considered as a noteworthy step toward considering photocatalysis as a more economical strategy. Recently, MXenes (two-dimensional (2D) transition-metal carbides, nitrides, and carbonitrides) have shown huge potential as alternatives for noble-metal cocatalysts. MXenes have several excellent properties, including atomically thin 2D morphology, metallic electrical conductivity, hydrophilic surface, and high specific surface area. In addition, they exhibit Gibbs free energy of intermediate H atom adsorption as close to zero and less than that of a commercial Pt-based cocatalyst, a Fermi level position above the H2 generation potential, and an excellent ability to capture and activate CO2 molecules. Therefore, there is a growing interest in MXene-based photocatalyst materials for various photocatalytic events. In this review, we focus on the recent advances in the synthesis of MXenes with 2D and 0D morphologies, the stability of MXenes, and MXene-based photocatalysts for H2 evolution, CO2 reduction, and pollutant degradation. The existing challenges and the possible future directions to enhance the photocatalytic performance of MXene-based photocatalysts are also discussed.
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Affiliation(s)
- G Murali
- Department of Polymer Science and Engineering, Department of IT-Energy Convergence (BK21 FOUR), Chemical Industry Institute, Korea National University of Transportation, Chungju 27469, Republic of Korea
| | - Jeevan Kumar Reddy Modigunta
- Department of Polymer Science and Engineering, Department of IT-Energy Convergence (BK21 FOUR), Chemical Industry Institute, Korea National University of Transportation, Chungju 27469, Republic of Korea
| | - Young Ho Park
- Department of Polymer Science and Engineering, Department of IT-Energy Convergence (BK21 FOUR), Chemical Industry Institute, Korea National University of Transportation, Chungju 27469, Republic of Korea
| | - Jong-Hoon Lee
- Department of Chemistry, Inha University, Incheon 22212, Republic of Korea
| | - Jishu Rawal
- Department of Chemistry, Inha University, Incheon 22212, Republic of Korea
| | - Seul-Yi Lee
- Department of Chemistry, Inha University, Incheon 22212, Republic of Korea
| | - Insik In
- Department of Polymer Science and Engineering, Department of IT-Energy Convergence (BK21 FOUR), Chemical Industry Institute, Korea National University of Transportation, Chungju 27469, Republic of Korea
| | - Soo-Jin Park
- Department of Chemistry, Inha University, Incheon 22212, Republic of Korea
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26
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Kim EJ, Na DL, Kim HJ, Park KW, Lee JH, Roh JH, Kwon JC, Yoon SJ, Jung NY, Jeong JH, Jang JW, Kim HJ, Park KH, Choi SH, Kim S, Park YH, Kim BC, Youn YC, Ki CS, Kim SH, Seo SW, Kim YE. Genetic Screening in Korean Patients with Frontotemporal Dementia Syndrome. J Alzheimers Dis Rep 2022; 6:651-662. [DOI: 10.3233/adr-220030] [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: 05/05/2022] [Accepted: 09/04/2022] [Indexed: 11/15/2022] Open
Abstract
Background: Frontotemporal dementia (FTD) syndrome is a genetically heterogeneous group of diseases. However, pathogenic variants in the chromosome 9 open reading frame 72 (C9orf72), microtubule-associated protein tau (MAPT), and progranulin (GRN) genes are mainly associated with genetic FTD in Caucasian populations. Objective: To understand the genetic background of Korean patients with FTD syndrome. Methods: We searched for pathogenic variants of 52 genes related to FTD, amyotrophic lateral sclerosis, familial Alzheimer’s disease, and other dementias, and hexanucleotide repeats of the C9orf72 gene in 72 Korean patients with FTD using whole exome sequencing and the repeat-primed polymerase chain reaction, respectively. Results: One likely pathogenic variant, p.G706R of MAPT, in a patient with behavioral variant FTD (bvFTD) and 13 variants of uncertain significance (VUSs) in nine patients with FTD were identified. Of these VUSs, M232R of the PRNP gene, whose role in pathogenicity is controversial, was also found in two patients with bvFTD. Conclusions: These results indicate that known pathogenic variants of the three main FTD genes (MAPT, GRN, and C9orf72) in Western countries are rare in Korean FTD patients.
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Affiliation(s)
- Eun-Joo Kim
- Department of Neurology, Pusan National University Hospital, Pusan National University School of Medicine and Medical Research Institute, Busan, Korea
| | - Duk L. Na
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Hee-Jin Kim
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Kyung Won Park
- Department of Neurology, Dong-A Medical Center, Dong-A University College of Medicine, Busan, Korea
| | - Jae-Hong Lee
- Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Jee Hoon Roh
- Department of Biomedical Sciences and Department of Physiology, Korea University College of Medicine, Seoul, Republic of Korea
| | - Jay C. Kwon
- Department of Neurology, Changwon Fatima Hospital, Changwon, Korea
| | - Soo Jin Yoon
- Department of Neurology, Eulji University Hospital, Daejeon
| | - Na-Yeon Jung
- Department of Neurology, Pusan National University Yangsan Hospital, Research Institute for Convergence of Biomedical Science and Technology, Busan, Korea
| | - Jee H. Jeong
- Department of Neurology, Ewha Womans University Hospital, Seoul
| | - Jae-Won Jang
- Department of Neurology, Kangwon National University Hospital, Chuncheon
| | - Hee-Jin Kim
- Department of Neurology, Hanyang University College of Medicine, Seoul, Korea
| | - Kee Hyung Park
- Department of Neurology, Gachon University Gil Hospital, Incheon, Korea
| | - Seong Hye Choi
- Department of Neurology, Inha University School of Medicine, Incheon, Korea
| | - SangYun Kim
- Department of Neurology, Seoul National University College of Medicine and Clinical Neuroscience Center, Seoul National University Bundang Hospital, Gyeonggi-do, Korea
| | - Young Ho Park
- Department of Neurology, Seoul National University College of Medicine and Clinical Neuroscience Center, Seoul National University Bundang Hospital, Gyeonggi-do, Korea
| | - Byeong C. Kim
- Department of Neurology, Chonnam National University Medical School, Gwangju, Korea
| | - Young Chul Youn
- Department of Neurology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | | | - Seung-Hyun Kim
- Department of Neurology, Hanyang University College of Medicine, Seoul, Korea
| | - Sang Won Seo
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
- Department of Neurology, Gachon University Gil Hospital, Incheon, Korea
| | - Young-Eun Kim
- Department of Laboratory Medicine, Hanyang University College of Medicine, Seoul, Korea
- Department of Neurology, Gachon University Gil Hospital, Incheon, Korea
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Park C, Jang JW, Joo G, Kim Y, Kim S, Byeon G, Park SW, Kasani PH, Yum S, Pyun JM, Park YH, Lim JS, Youn YC, Choi HS, Park C, Im H, Kim S. Predicting progression to dementia with “comprehensive visual rating scale” and machine learning algorithms. Front Neurol 2022; 13:906257. [PMID: 36071894 PMCID: PMC9443667 DOI: 10.3389/fneur.2022.906257] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 07/14/2022] [Indexed: 11/17/2022] Open
Abstract
Background and Objective Identifying biomarkers for predicting progression to dementia in patients with mild cognitive impairment (MCI) is crucial. To this end, the comprehensive visual rating scale (CVRS), which is based on magnetic resonance imaging (MRI), was developed for the assessment of structural changes in the brains of patients with MCI. This study aimed to investigate the use of the CVRS score for predicting dementia in patients with MCI over a 2-year follow-up period using various machine learning (ML) algorithms. Methods We included 197 patients with MCI who were followed up more than once. The data used for this study were obtained from the Japanese-Alzheimer's Disease Neuroimaging Initiative study. We assessed all the patients using their CVRS scores, cortical thickness data, and clinical data to determine their progression to dementia during a follow-up period of over 2 years. ML algorithms, such as logistic regression, random forest (RF), XGBoost, and LightGBM, were applied to the combination of the dataset. Further, feature importance that contributed to the progression from MCI to dementia was analyzed to confirm the risk predictors among the various variables evaluated. Results Of the 197 patients, 108 (54.8%) showed progression from MCI to dementia. Tree-based classifiers, such as XGBoost, LightGBM, and RF, achieved relatively high performance. In addition, the prediction models showed better performance when clinical data and CVRS score (accuracy 0.701–0.711) were used than when clinical data and cortical thickness (accuracy 0.650–0.685) were used. The features related to CVRS helped predict progression to dementia using the tree-based models compared to logistic regression. Conclusions Tree-based ML algorithms can predict progression from MCI to dementia using baseline CVRS scores combined with clinical data.
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Affiliation(s)
- Chaeyoon Park
- Department of Convergence Security, Kangwon National University, Chuncheon, South Korea
| | - Jae-Won Jang
- Department of Convergence Security, Kangwon National University, Chuncheon, South Korea
- Department of Neurology, Kangwon National University Hospital, Kangwon National University College of Medicine, Chuncheon, South Korea
- Interdisciplinary Graduate Program in Medical Bigdata Convergence, Chuncheon, South Korea
| | - Gihun Joo
- Interdisciplinary Graduate Program in Medical Bigdata Convergence, Chuncheon, South Korea
| | - Yeshin Kim
- Department of Neurology, Kangwon National University Hospital, Kangwon National University College of Medicine, Chuncheon, South Korea
| | - Seongheon Kim
- Department of Neurology, Kangwon National University Hospital, Kangwon National University College of Medicine, Chuncheon, South Korea
| | - Gihwan Byeon
- Department of Psychiatry, Kangwon National University Hospital, Kangwon National University College of Medicine, Chuncheon, South Korea
| | - Sang Won Park
- Interdisciplinary Graduate Program in Medical Bigdata Convergence, Chuncheon, South Korea
| | | | - Sujin Yum
- Interdisciplinary Graduate Program in Medical Bigdata Convergence, Chuncheon, South Korea
| | - Jung-Min Pyun
- Department of Neurology, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine, Seoul, South Korea
| | - Young Ho Park
- Department of Neurology, Seoul National University Bundang Hospital, Seongnam, South Korea
- Department of Neurology, Seoul National University College of Medicine, Seoul, South Korea
| | - Jae-Sung Lim
- Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Young Chul Youn
- Department of Neurology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, South Korea
| | - Hyun-Soo Choi
- Interdisciplinary Graduate Program in Medical Bigdata Convergence, Chuncheon, South Korea
- Department of Computer Science and Engineering, Kangwon National University, Chuncheon, South Korea
| | - Chihyun Park
- Interdisciplinary Graduate Program in Medical Bigdata Convergence, Chuncheon, South Korea
- Department of Computer Science and Engineering, Kangwon National University, Chuncheon, South Korea
| | - Hyeonseung Im
- Department of Convergence Security, Kangwon National University, Chuncheon, South Korea
- Interdisciplinary Graduate Program in Medical Bigdata Convergence, Chuncheon, South Korea
- Department of Computer Science and Engineering, Kangwon National University, Chuncheon, South Korea
- *Correspondence: Hyeonseung Im
| | - SangYun Kim
- Department of Neurology, Seoul National University Bundang Hospital, Seongnam, South Korea
- Department of Neurology, Seoul National University College of Medicine, Seoul, South Korea
- SangYun Kim
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Lee Y, Yoo KD, Baek SH, Kim YG, Kim HJ, Ryu JY, Paek JH, Suh SH, Oh SW, Lee J, Jhee JH, Suh JS, Yang EM, Park YH, Kim YL, Choi M, Oh KH, Kim S. Korean Society of Nephrology 2022 Recommendations on controversial issues in diagnosis and management of hyponatremia. Kidney Res Clin Pract 2022; 41:393-411. [PMID: 35919925 PMCID: PMC9346392 DOI: 10.23876/j.krcp.33.555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 06/23/2022] [Indexed: 11/28/2022] Open
Abstract
The Korean Society for Electrolyte and Blood Pressure Research, in collaboration with the Korean Society of Nephrology, has published a clinical practice guideline (CPG) document for hyponatremia treatment. The document is based on an extensive evidence-based review of the diagnosis, evaluation, and treatment of hyponatremia with the multidisciplinary participation of representative experts in hyponatremia with methodologist support for guideline development. This CPG consists of 12 recommendations (two for diagnosis, eight for treatment, and two for special situations) based on eight detailed topics and nine key questions. Each recommendation begins with statements graded by the strength of the recommendations and the quality of the evidence. Each statement is followed by rationale supporting the recommendations. The committee issued conditional recommendations in favor of rapid intermittent bolus administration of hypertonic saline in severe hyponatremia, the use of vasopressin receptor antagonists in heart failure with hypervolemic hyponatremia, and syndrome of inappropriate antidiuresis with moderate to severe hyponatremia, the individualization of desmopressin use, and strong recommendation on the administration of isotonic fluids as maintenance fluid therapy in hospitalized pediatric patients. We hope that this CPG will provide useful recommendations in practice, with the aim of providing clinical support for shared decision-making to improve patient outcomes.
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Affiliation(s)
- Yeonhee Lee
- Division of Nephrology, Department of Internal Medicine, Uijeongbu Eulji Medical Center, Eulji University, Uijeongbu, Republic of Korea
| | - Kyung Don Yoo
- Division of Nephrology, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Seon Ha Baek
- Department of Internal Medicine, Hallym University Dongtan Sacred Heart Hospital, Hwaseong, Republic of Korea
| | - Yang Gyun Kim
- Division of Nephrology, Department of Internal Medicine, College of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Hyo Jin Kim
- Division of Nephrology, Department of Internal Medicine, Pusan National University Hospital, Busan, Republic of Korea
| | - Ji Young Ryu
- Department of Internal Medicine, Hallym University Dongtan Sacred Heart Hospital, Hwaseong, Republic of Korea
| | - Jin Hyuk Paek
- Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - Sang Heon Suh
- Division of Nephrology, Department of Internal Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Se Won Oh
- Division of Nephrology, Department of Internal Medicine, Korea University Anam Hospital, Seoul, Republic of Korea
| | - Jeonghwan Lee
- Department of Internal Medicine, SMG-SNU Boramae Medical Center, Seoul, Republic of Korea
| | - Jong Hyun Jhee
- Division of Nephrology, Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jin-Soon Suh
- Division of Pediatric Nephrology, Department of Pediatrics, Bucheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Eun Mi Yang
- Division of Pediatric Nephrology, Department of Pediatrics, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Young Ho Park
- Department of Neurology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Republic of Korea
| | - Yae Lim Kim
- Department of Biostatistics, Korea University College of Medicine, Seoul, Republic of Korea
| | - Miyoung Choi
- Division for Healthcare Technology Assessment Research, National Evidence-Based Healthcare Collaborating Agency, Seoul, Republic of Korea
| | - Kook-Hwan Oh
- Division of Nephrology, Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Sejoong Kim
- Division of Nephrology, Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
- Correspondence: Sejoong Kim Department of Internal Medicine, Seoul National University Bundang Hospital, 82 Gumi-ro, 173beon-gil, Bundang-gu, Seongnam 13620, Republic of Korea. E-mail:
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Lee Y, Yoo KD, Baek SH, Kim YG, Kim HJ, Ryu JY, Paek JH, Suh SH, Oh SW, Lee J, Jhee JH, Suh JS, Yang EM, Park YH, Kim YL, Choi M, Oh KH, Kim S. Korean Society of Nephrology 2022 Recommendations on controversial issues in diagnosis and management of hyponatremia. Kidney Res Clin Pract 2022. [PMCID: PMC9351400 DOI: 10.23876/j.krcp.33.666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
- Yeonhee Lee
- Division of Nephrology, Department of Internal Medicine, Uijeongbu Eulji Medical Center, Eulji University, Uijeongbu, Republic of Korea
| | - Kyung Don Yoo
- Division of Nephrology, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Seon Ha Baek
- Department of Internal Medicine, Hallym University Dongtan Sacred Heart Hospital, Hwaseong, Republic of Korea
| | - Yang Gyun Kim
- Division of Nephrology, Department of Internal Medicine, College of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Hyo Jin Kim
- Division of Nephrology, Department of Internal Medicine, Pusan National University Hospital, Busan, Republic of Korea
| | - Ji Young Ryu
- Department of Internal Medicine, Hallym University Dongtan Sacred Heart Hospital, Hwaseong, Republic of Korea
| | - Jin Hyuk Paek
- Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - Sang Heon Suh
- Division of Nephrology, Department of Internal Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Se Won Oh
- Division of Nephrology, Department of Internal Medicine, Korea University Anam Hospital, Seoul, Republic of Korea
| | - Jeonghwan Lee
- Department of Internal Medicine, SMG-SNU Boramae Medical Center, Seoul, Republic of Korea
| | - Jong Hyun Jhee
- Division of Nephrology, Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jin-Soon Suh
- Division of Pediatric Nephrology, Department of Pediatrics, Bucheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Eun Mi Yang
- Division of Pediatric Nephrology, Department of Pediatrics, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Young Ho Park
- Department of Neurology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Republic of Korea
| | - Yae Lim Kim
- Department of Biostatistics, Korea University College of Medicine, Seoul, Republic of Korea
| | - Miyoung Choi
- Division for Healthcare Technology Assessment Research, National Evidence-Based Healthcare Collaborating Agency, Seoul, Republic of Korea
| | - Kook-Hwan Oh
- Division of Nephrology, Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Sejoong Kim
- Division of Nephrology, Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
- Correspondence: Sejoong Kim Department of Internal Medicine, Seoul National University Bundang Hospital, 82 Gumi-ro, 173beon-gil, Bundang-gu, Seongnam 13620, Republic of Korea. E-mail:
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Hossain SKM, Toledo Vega A, Valles-Rosales D, Park YH, Kuravi S, Sohn H. Particulate suspension: a review of studies characterizing particulates and volatile organic compounds emissions during additive manufacturing processes. Particulate Science and Technology 2022. [DOI: 10.1080/02726351.2022.2094301] [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] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
| | - Azul Toledo Vega
- Department of Industrial Engineering, New Mexico State University, Las Cruces, New Mexico, USA
| | - Delia Valles-Rosales
- Department of Industrial Engineering, New Mexico State University, Las Cruces, New Mexico, USA
| | - Young Ho Park
- Department of Mechanical and Aerospace Engineering, New Mexico State University, Las Cruces, New Mexico, USA
| | - Sarada Kuravi
- Department of Mechanical and Aerospace Engineering, New Mexico State University, Las Cruces, New Mexico, USA
| | - Hansuk Sohn
- Department of Industrial Engineering, New Mexico State University, Las Cruces, New Mexico, USA
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Abstract
To investigate an association of serum liver enzymes with Alzheimer's disease (AD) diagnosis and cognitive performance, we performed logistic and linear regression analyses in 781 patients with AD and 405 cognitively normal subjects. We found that alanine aminotransferase (ALT) and aspartate aminotransferase (AST) levels had significant positive associations with cognitive performance and were significantly decreased in AD patients. The alkaline phosphatase level and AST to ALT ratio were significantly negatively associated with cognitive performance and were significantly increased in AD patients. This suggests that these liver enzymes might be implicated in the pathogenesis of AD.
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Affiliation(s)
- Sang-Won Han
- Department of Neurology, Chung-Ang University Gwang-Myeong Hospital, Gwangmyeong, Republic of Korea
| | - Young Ho Park
- Department of Neurology, Seoul National University College of Medicine and Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Eun Sun Jang
- Department of Internal Medicine, Seoul National University College of Medicine and Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Kwangsik Nho
- Department of Radiology and Imaging Sciences, Center for Computational Biology and Bioinformatics, Indiana Alzheimer's Disease Research Center, Indiana University School of Medicine, Indianapolis, IN, USA
| | - SangYun Kim
- Department of Neurology, Seoul National University College of Medicine and Seoul National University Bundang Hospital, Seongnam, Republic of Korea
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Pyun J, Park YH, Hodges A, Jang J, Bice PJ, Kim S, Saykin AJ, Nho K. Immunity gene IFITM3 variant: Relation to cognition and Alzheimer's disease pathology. Alzheimers Dement (Amst) 2022; 14:e12317. [PMID: 35769874 PMCID: PMC9212215 DOI: 10.1002/dad2.12317] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 03/31/2022] [Accepted: 04/02/2022] [Indexed: 01/29/2023]
Abstract
Introduction We investigated single-nucleotide polymorphisms (SNPs) in IFITM3, an innate immunity gene and modulator of amyloid beta in Alzheimer's disease (AD), for association with cognition and AD biomarkers. Methods We used data from the Alzheimer's Disease Neuroimaging Initiative (ADNI; N = 1565) and AddNeuroMed (N = 633) as discovery and replication samples, respectively. We performed gene-based association analysis of SNPs in IFITM3 with cognitive performance and SNP-based association analysis with cognitive decline and amyloid, tau, and neurodegeneration biomarkers for AD. Results Gene-based association analysis showed that IFITM3 was significantly associated with cognitive performance. Particularly, rs10751647 in IFITM3 was associated with less cognitive decline, less amyloid and tau burden, and less brain atrophy in ADNI. The association of rs10751647 with cognitive decline and brain atrophy was replicated in AddNeuroMed. Discussion This suggests that rs10751647 in IFITM3 is associated with less vulnerability for cognitive decline and AD biomarkers, providing mechanistic insight regarding involvement of immunity and infection in AD. Highlights IFITM3 is significantly associated with cognitive performance.rs10751647 in IFITM3 is associated with cognitive decline rates with replication.rs10751647 is associated with amyloid beta load, cerebrospinal fluid phosphorylated tau levels, and brain atrophy.rs10751647 is associated with IFITM3 expression levels in blood and brain.rs10751647 in IFITM3 is related to less vulnerability to Alzheimer's disease pathogenesis.
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Affiliation(s)
- Jung‐Min Pyun
- Department of NeurologySeoul National University Bundang Hospital and Seoul National University College of MedicineSeongnamRepublic of Korea
- Department of NeurologySoonchunhyang University Seoul HospitalSoonchunhyang University College of MedicineSeoulRepublic of Korea
| | - Young Ho Park
- Department of NeurologySeoul National University Bundang Hospital and Seoul National University College of MedicineSeongnamRepublic of Korea
| | - Angela Hodges
- Institute of PsychiatryPsychology & NeuroscienceKing's College LondonLondonUK
| | - Jae‐Won Jang
- Department of NeurologyKangwon National University HospitalChuncheonRepublic of Korea
| | - Paula J. Bice
- Department of Radiology and Imaging Sciences, and the Indiana Alzheimer Disease CenterIndiana University School of MedicineIndianapolisIndianaUSA
| | - SangYun Kim
- Department of NeurologySeoul National University Bundang Hospital and Seoul National University College of MedicineSeongnamRepublic of Korea
| | - Andrew J. Saykin
- Department of Radiology and Imaging Sciences, and the Indiana Alzheimer Disease CenterIndiana University School of MedicineIndianapolisIndianaUSA
- Department of Medical and Molecular GeneticsIndiana University School of MedicineIndianapolisIndianaUSA
| | - Kwangsik Nho
- Department of Radiology and Imaging Sciences, and the Indiana Alzheimer Disease CenterIndiana University School of MedicineIndianapolisIndianaUSA
- Center for Computational Biology and BioinformaticsIndiana University School of MedicineIndianapolisIndianaUSA
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Abstract
BACKGROUND Although thyroid dysfunction has been considered as a cause of reversible cognitive impairment, association between subclinical hypothyroidism and cognitive impairment is controversial. OBJECTIVE We compared cognitive profiles of patients in an euthyroid or subclinical hypothyroid (sHypo) state, as well as their disease progression from mild cognitive impairment (MCI) to dementia within 3 years. METHODS We included 2,181 patients in a euthyroid and 284 in a sHypo state over 60 years of age who underwent an extensive cognitive assessment at Seoul National University Bundang Hospital but were not prescribed levothyroxine, methimazole, carbimazole, or propylthiouracil. After propensity score matching for age, sex, and education level, 1,118 patients in a euthyroid and 283 patients in a sHypo state were included. Attention, language, memory, visuocontructive, and executive functions were compared between the groups using Student's t-test or the Mann-Whitney U test. To investigate the association between disease progression and subclinical hypothyroidism, a Cox regression analyses was performed in 1,265 patients with MCI. Patients with thyroid-stimulating hormone levels over 10 mlU/L was classified as the "sHypo10", and hazard ratios for sHypo or sHypo10 were assessed. RESULTS There was no difference in attention, language, memory, visuoconstructive, and executive functions between the patient groups. Progression from MCI to dementia was not associated with sHypo or sHypo10. CONCLUSION There was no difference in cognitive profile between euthyroid and sHypo patients, and no association between subclinical hypothyroidism and disease progression. This might suggest a clue of strategies regarding hormone therapy in subclinical hypothyroidism with cognitive impairment.
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Affiliation(s)
- Jung-Min Pyun
- Department of Neurology, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine, Seoul, Republic of Korea
| | - Young Ho Park
- Department of Neurology, Seoul National University Bundang Hospital and Seoul National University College of Medicine, Seongnam, Republic of Korea
| | - SangYun Kim
- Department of Neurology, Seoul National University Bundang Hospital and Seoul National University College of Medicine, Seongnam, Republic of Korea
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Ha J, Son NH, Park YH, Lee E, Kim E, Jung Kim W. Association of cognitive enhancers and incident seizure risk in dementia: a population-based study. BMC Geriatr 2022; 22:480. [PMID: 35658833 PMCID: PMC9166339 DOI: 10.1186/s12877-022-03120-5] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 05/06/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Although individuals with dementia have a high risk of developing seizures, whether seizures are associated with cholinesterase inhibitors, which are commonly prescribed to treat individuals with dementia, remains unknown. This study investigated the risk of incident seizure following cholinesterase inhibitor use in patients with dementia.
Methods
A nationwide, nested case-control study was conducted using data from the Korean Health Insurance Review and Assessment Service (HIRA) from 2014 through 2018. A total of 13,767 participants aged 65–95 years who experienced incident seizure were propensity score-matched for medical comorbidities and drug exposure at a 1:3 ratio with a control group of 39,084 participants. The study examined the incidence of seizures in patients diagnosed with dementia within one year after receiving cognitive enhancers. Adjusted odds ratios (aORs) and 95% confidence intervals (CIs) for seizure incidence according to cholinesterase inhibitor use were analyzed using a multivariable conditional logistic regression model.
Results
There was no statistically significant association between duration of cholinesterase inhibitors use and seizure risk. Although there was slight increased seizure risk in patient after receiving donepezil for 1 year compared to memantine, subgroup analyses stratified age and sex did not reveal any significant association between cholinesterase inhibitors use and late-onset seizure.
Conclusions
Our findings suggest no immediate increase in seizure risk is associated with cholinesterase inhibitor use, although the risk of seizure in patients with dementia did increase after one year of continued medication intake. Further study is required to obtain confirmatory results on the seizure-related safety of cognitive enhancers in patients with dementia.
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Lee Y, Yoo KD, Baek SH, Kim YG, Kim HJ, Ryu JY, Paek JH, Suh SH, Oh SW, Lee J, Jhee JH, Suh JS, Yang EM, Park YH, Kim YL, Choi M, Oh KH, Kim S. Korean Society of Nephrology 2022 Recommendations on Controversial Issues in Diagnosis and Management of Hyponatremia. Electrolyte Blood Press 2022; 20:21-38. [DOI: 10.5049/ebp.2022.20.1.21] [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: 05/11/2022] [Revised: 07/01/2022] [Accepted: 07/02/2022] [Indexed: 11/25/2022] Open
Affiliation(s)
- Yeonhee Lee
- Division of Nephrology, Department of Internal Medicine, Uijeongbu Eulji Medical Center, Eulji University, Gyeonggi-do, Republic of Korea
| | - Kyung Don Yoo
- Division of Nephrology, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Republic of Korea
| | - Seon Ha Baek
- Department of Internal Medicine, Hallym University Dongtan Sacred Heart Hospital, Hwaseong, Republic of Korea
| | - Yang Gyun Kim
- Division of Nephrology, Department of Internal Medicine, Kyung Hee University, College of Medicine, Seoul, Republic of Korea
| | - Hyo Jin Kim
- Division of Nephrology, Department of Internal Medicine, Pusan National University Hospital, Busan, Republic of Korea
| | - Ji Young Ryu
- Department of Internal Medicine, Hallym University Dongtan Sacred Heart Hospital, Hwaseong, Republic of Korea
| | - Jin Hyuk Paek
- Department of Internal Medicine, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - Sang Heon Suh
- Division of Nephrology, Department of Internal Medicine, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Se Won Oh
- Division of Nephrology, Department of Internal Medicine, Korea University Anam Hospital, Seoul, Republic of Korea
| | - Jeonghwan Lee
- Department of Internal Medicine, Seoul National University Boramae Medical Center, Seoul, Republic of Korea
| | - Jong Hyun Jhee
- Division of Nephrology, Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jin-Soon Suh
- Division of Pediatric Nephrology, Department of Pediatrics, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Eun Mi Yang
- Division of Pediatric Nephrology, Department of Pediatrics, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Young Ho Park
- Department of Neurology, Seoul National University College of Medicine and Seoul National University Bundang Hospital, Gyeonggi-do, Republic of Korea
| | - Yae Lim Kim
- Department of Biostatistics, Korea University College of Medicine, Seoul, Republic of Korea
| | - Miyoung Choi
- Division for Healthcare Technology Assessment Research, National Evidence-Based Healthcare Collaborating Agency, Seoul, Republic of Korea
| | - Kook-Hwan Oh
- Division of Nephrology, Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Sejoong Kim
- Division of Nephrology, Department of Internal Medicine, Seoul National University Bundang Hospital, Gyeonggi-do, Republic of Korea
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Han S, Park YH, Ryoo N, Kim K, Pyun JM, Kim S. Idiopathic normal pressure hydrocephalus with synucleinopathy: Diagnosis and treatment. Alzheimers Dement 2021. [DOI: 10.1002/alz.051572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Sang‐Won Han
- Seoul National University Bundang Hospital Seongnam Republic of Korea
| | - Young Ho Park
- Seoul National University Bundang Hospital Seongnam Republic of Korea
| | - Nayoung Ryoo
- Seoul National University Bundang Hospital Seongnam Republic of Korea
| | - Kitae Kim
- Seoul National University Bundang Hospital Seongnam Republic of Korea
| | - Jung Min Pyun
- Seoul National University Bundang Hospital Seongnam Republic of Korea
| | - Sangyun Kim
- Seoul National University Bundang Hospital Seongnam Republic of Korea
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Pyun JM, Park YH, Lee K, Kim S, Saykin AJ, Nho K. Predictability of polygenic risk score for progression to dementia and its interaction with
APOE
ε4 in mild cognitive impairment. Alzheimers Dement 2021. [DOI: 10.1002/alz.051524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jung Min Pyun
- Seoul National University Bundang Hospital Seongnam South Korea
| | - Young Ho Park
- Seoul National University Bundang Hospital Seongnam South Korea
| | - Keon‐Joo Lee
- Seoul National University Bundang Hospital Seoul National University College of Medicine Seongnam South Korea
| | - Sangyun Kim
- Seoul National University Bundang Hospital Seoul National University College of Medicine Seongnam South Korea
| | | | - Kwangsik Nho
- Indiana Alzheimer Disease Center Indiana University School of Medicine Indianapolis IN USA
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Kang MJ, Shim KH, Suh J, Pyun JM, Ryoo N, Park YH, Youn YC, Jang J, Jeong JH, Park KW, Choi SH, Suk K, Lee H, Ko P, Lee C, Lim TS, An SS, Kim S. CSF total tau/α‐synuclein ratio improved the diagnostic performance for Alzheimer’s disease as an indicator of tau phosphorylation. Alzheimers Dement 2021. [DOI: 10.1002/alz.051540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Min Ju Kang
- Veterans Health Service Medical Center Seoul Korea
| | - Kyu Hwan Shim
- Veterans Medical Research Institute, Veterans Health Service Medical Center Seoul Korea
| | - Jeewon Suh
- Seoul National University Bundang Hospital Seongnam South Korea
| | - Jung Min Pyun
- Seoul National University Bundang Hospital Seongnam South Korea
| | - Nayoung Ryoo
- Seoul National University Bundang Hospital Seongnam South Korea
| | - Young Ho Park
- Seoul National University Bundang Hospital Seongnam South Korea
| | | | - Jae‐Won Jang
- Kangwon National University/Kangwon National University Hospital Chuncheon Korea
| | | | | | | | - Kyoungho Suk
- Kyungpook National University School of Medicine Daegu Korea
| | - Ho‐Won Lee
- Kyungpook National University Daegu South Korea
| | - Pan‐Woo Ko
- Kyungpook National University School of Medicine Daegu Korea
| | | | | | | | - Sangyun Kim
- Seoul National University Bundang Hospital, Seoul National University College of Medicine Seongnam Korea
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Park YH, Pyun JM, Hodges A, Jang JW, Bice PJ, Kim S, Saykin AJ, Nho K. Dysregulated expression levels of APH1B in peripheral blood are associated with brain atrophy and amyloid-β deposition in Alzheimer's disease. Alzheimers Res Ther 2021; 13:183. [PMID: 34732252 PMCID: PMC8567578 DOI: 10.1186/s13195-021-00919-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Accepted: 10/18/2021] [Indexed: 11/10/2022]
Abstract
Background The interaction between the brain and periphery might play a crucial role in the development of Alzheimer’s disease (AD). Methods Using blood transcriptomic profile data from two independent AD cohorts, we performed expression quantitative trait locus (cis-eQTL) analysis of 29 significant genetic loci from a recent large-scale genome-wide association study to investigate the effects of the AD genetic variants on gene expression levels and identify their potential target genes. We then performed differential gene expression analysis of identified AD target genes and linear regression analysis to evaluate the association of differentially expressed genes with neuroimaging biomarkers. Results A cis-eQTL analysis identified and replicated significant associations in seven genes (APH1B, BIN1, FCER1G, GATS, MS4A6A, RABEP1, TRIM4). APH1B expression levels in the blood increased in AD and were associated with entorhinal cortical thickness and global cortical amyloid-β deposition. Conclusion An integrative analysis of genetics, blood-based transcriptomic profiles, and imaging biomarkers suggests that APH1B expression levels in the blood might play a role in the pathogenesis of AD. Supplementary Information The online version contains supplementary material available at 10.1186/s13195-021-00919-z.
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Affiliation(s)
- Young Ho Park
- Department of Neurology, Seoul National University Bundang Hospital and Seoul National University College of Medicine, Seongnam, Republic of Korea
| | - Jung-Min Pyun
- Department of Neurology, Uijeongbu Eulji Medical Center, Eulji University, Uijeongbu, Republic of Korea
| | - Angela Hodges
- Institute of Psychiatry, Psychology & Neuroscience, King's College London, London, UK
| | - Jae-Won Jang
- Department of Neurology, Kangwon National University Hospital, Chuncheon, Republic of Korea
| | - Paula J Bice
- Department of Radiology and Imaging Sciences, and the Indiana Alzheimer Disease Center, Center for Neuroimaging, Indiana University School of Medicine, Indianapolis, IN, USA
| | - SangYun Kim
- Department of Neurology, Seoul National University Bundang Hospital and Seoul National University College of Medicine, Seongnam, Republic of Korea
| | - Andrew J Saykin
- Department of Radiology and Imaging Sciences, and the Indiana Alzheimer Disease Center, Center for Neuroimaging, Indiana University School of Medicine, Indianapolis, IN, USA.,Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Kwangsik Nho
- Department of Radiology and Imaging Sciences, and the Indiana Alzheimer Disease Center, Center for Neuroimaging, Indiana University School of Medicine, Indianapolis, IN, USA. .,Center for Computational Biology and Bioinformatics, Indiana University School of Medicine, Indianapolis, IN, USA.
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Park YH, Murali G, Modigunta JKR, In I, In SI. Recent Advances in Quantum Dots for Photocatalytic CO 2 Reduction: A Mini-Review. Front Chem 2021; 9:734108. [PMID: 34660530 PMCID: PMC8514862 DOI: 10.3389/fchem.2021.734108] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 08/20/2021] [Indexed: 11/16/2022] Open
Abstract
Solar energy–driven carbon dioxide (CO2) reduction to valuable solar fuels/chemicals (e.g., methane, ethanol, and carbon monoxide) using particulate photocatalysts is regarded as one of the promising and effective approaches to deal with energy scarcity and global warming. The growth of nanotechnology plays an eminent role in improving CO2 reduction (CO2R) efficiencies by means of offering opportunities to tailor the morphology of photocatalysts at a nanoscale regime to achieve enhanced surface reactivity, solar light absorption, and charge separation, which are decisive factors for high CO2R efficiency. Notably, quantum dots (QDs), tiny pieces of semiconductors with sizes below 20 nm, offering a myriad of advantages including maximum surface atoms, very short charge migration lengths, size-dependent energy band positions, multiple exciton generation effect, and unique optical properties, have recently become a rising star in the CO2R application. In this review, we briefly summarized the progress so far achieved in QD-assisted CO2 photoreduction, highlighting the advantages of QDs prepared with diverse chemical compositions such as metal oxides, metal chalcogenides, carbon, metal halide perovskites, and MXenes.
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Affiliation(s)
- Young Ho Park
- Department of Polymer Science and Engineering, Korea National University of Transportation, Chungju, South Korea.,Department of IT-Energy Convergence (BK21 FOUR), Chemical Industry Institute, Korea National University of Transportation, Chungju, South Korea
| | - G Murali
- Department of Polymer Science and Engineering, Korea National University of Transportation, Chungju, South Korea.,Department of IT-Energy Convergence (BK21 FOUR), Chemical Industry Institute, Korea National University of Transportation, Chungju, South Korea
| | - Jeevan Kumar Reddy Modigunta
- Department of Polymer Science and Engineering, Korea National University of Transportation, Chungju, South Korea.,Department of IT-Energy Convergence (BK21 FOUR), Chemical Industry Institute, Korea National University of Transportation, Chungju, South Korea
| | - Insik In
- Department of Polymer Science and Engineering, Korea National University of Transportation, Chungju, South Korea.,Department of IT-Energy Convergence (BK21 FOUR), Chemical Industry Institute, Korea National University of Transportation, Chungju, South Korea
| | - Su-Il In
- Department of Energy Science and Engineering, Innovative Materials and Devices for Future Electronics/Power Sources (BK21 FOUR), Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, South Korea
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Kang MG, Kim KH, Park HW, Koh JS, Park JR, Park YH, Hwang SJ, Jeong YH, Kwak CH, Ahn JH, Song HN, Hwang JY. Impact of active and stable cancer on survival in patients undergoing percutaneous coronary intervention. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
With advances in treatment of ischemic heart disease and cancer treatment, use of percutaneous coronary intervention (PCI) in cancer survivors and patients with active cancer (AC) is expanding.
Objectives
The purpose of this study was to determine the impact of cancer on survival and major cardiovascular events (MACE) in a long-term, single-center cohort of patients treated with PCI.
Methods
Patients treated with PCI between January 2010 and December 2017 were grouped as follows: controls (patients without cancer), stable cancer (SC), and AC. AC was included patients with cancer diagnosed within the past 6 months, patients who had cancer-related therapy within the past 6 months, active metastatic disease, or active recurrence of the cancer. The primary endpoints were 5-year survival and a secondary endpoint was 5-year MACE.
Results
A total of 6,743 patients (age 66±12 years, 68.4% men) treated with PCI were included: 6,404 (95.0%) controls, 245 (3.6%) SC, and 94 (1.4%) AC. Predominant malignancies were gastrointestinal (37.4%), lung (22.7%), and genitourinary cancer (14.7%). No differences were observed between patients with AC, SC and controls regarding 5-year MACE (total MACE, 33.2% vs. 28.1% vs. 17.5%, p=0.072; cardiac death, 13.6% vs. 9.1% vs. 6.7%, p=0.066; non-fatal myocardial infarction, 2.9% vs. 7.5% vs. 7.8%, p=0.820; revascularization, 17.9% vs. 17.6% vs. 11.6%, p=0.794, respectively). Patients with AC and SC had reduced 5-year survival compared with controls (62.0% vs. 81.5% vs. 89.8%, p<0.001) (Figure). AC was associated with a 1.76 (95% CI 1.22 to 2.54, p=0.002) fold increased risk of all-cause 5-year mortality in multivariable adjusted models.
Conclusions
Cumulative incidence of 5-year survival was discriminated by concurrent status of cancer following PCI. Individualized decision making is needed in the routine practice of PCI regarding concurrent cancer-specific treatment and prognosis.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- M G Kang
- Gyeongsang National University Hospital, Jinju, Korea (Republic of)
| | - K H Kim
- Gyeongsang National University Hospital, Cardiology, Jinju, Korea (Republic of)
| | - H W Park
- Gyeongsang National University Hospital, Cardiology, Jinju, Korea (Republic of)
| | - J S Koh
- Gyeongsang National University Hospital, Cardiology, Jinju, Korea (Republic of)
| | - J R Park
- Gyeongsang National University Hospital, Cardiology, Jinju, Korea (Republic of)
| | - Y H Park
- Gyeongsang National University Changwon Hospital, Changwon, Korea (Republic of)
| | - S J Hwang
- Gyeongsang National University Hospital, Cardiology, Jinju, Korea (Republic of)
| | - Y H Jeong
- Gyeongsang National University Changwon Hospital, Changwon, Korea (Republic of)
| | - C H Kwak
- Gyeongsang National University Changwon Hospital, Changwon, Korea (Republic of)
| | - J H Ahn
- Gyeongsang National University Changwon Hospital, Changwon, Korea (Republic of)
| | - H N Song
- Gyeongsang National University Hospital, Jinju, Korea (Republic of)
| | - J Y Hwang
- Gyeongsang National University Hospital, Cardiology, Jinju, Korea (Republic of)
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Pyun JM, Park YH, Lee KJ, Kim S, Saykin AJ, Nho K. Predictability of polygenic risk score for progression to dementia and its interaction with APOE ε4 in mild cognitive impairment. Transl Neurodegener 2021; 10:32. [PMID: 34465370 PMCID: PMC8406896 DOI: 10.1186/s40035-021-00259-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [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: 04/26/2021] [Accepted: 08/14/2021] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND The combinatorial effect of multiple genetic factors calculated as a polygenic risk score (PRS) has been studied to predict disease progression to Alzheimer's disease (AD) from mild cognitive impairment (MCI). Previous studies have investigated the performance of PRS in the prediction of disease progression to AD by including and excluding single nucleotide polymorphisms within the region surrounding the APOE gene. These studies may have missed the APOE genotype-specific predictability of PRS for disease progression to AD. METHODS We analyzed 732 MCI from the Alzheimer's Disease Neuroimaging Initiative cohort, including those who progressed to AD within 5 years post-baseline (n = 270) and remained stable as MCI (n = 462). The predictability of PRS including and excluding the APOE region (PRS+APOE and PRS-APOE) on the conversion to AD and its interaction with the APOE ε4 carrier status were assessed using Cox regression analyses. RESULTS PRS+APOE (hazard ratio [HR] 1.468, 95% CI 1.335-1.615) and PRS-APOE (HR 1.293, 95% CI 1.157-1.445) were both associated with a significantly increased risk of MCI progression to dementia. The interaction between PRS+APOE and APOE ε4 carrier status was significant with a P-value of 0.0378. The association of PRSs with the progression risk was stronger in APOE ε4 non-carriers (PRS+APOE: HR 1.710, 95% CI 1.244-2.351; PRS-APOE: HR 1.429, 95% CI 1.182-1.728) than in APOE ε4 carriers (PRS+APOE: HR 1.167, 95% CI 1.005-1.355; PRS-APOE: HR 1.172, 95% CI 1.020-1.346). CONCLUSIONS PRS could predict the conversion of MCI to dementia with a stronger association in APOE ε4 non-carriers than APOE ε4 carriers. This indicates PRS as a potential genetic predictor particularly for MCI with no APOE ε4 alleles.
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Affiliation(s)
- Jung-Min Pyun
- Department of Neurology, Uijeongbu Eulji Medical Center, Eulji University, Uijeongbu, Republic of Korea
| | - Young Ho Park
- Department of Neurology, Seoul National University Bundang Hospital and Seoul National University College of Medicine, Seongnam, Republic of Korea.
| | - Keon-Joo Lee
- Department of Neurology, Seoul National University Bundang Hospital and Seoul National University College of Medicine, Seongnam, Republic of Korea
| | - SangYun Kim
- Department of Neurology, Seoul National University Bundang Hospital and Seoul National University College of Medicine, Seongnam, Republic of Korea
| | - Andrew J Saykin
- Department of Radiology and Imaging Sciences, and the Indiana Alzheimer Disease Center, Indiana University School of Medicine, Indianapolis, IN, USA
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Kwangsik Nho
- Department of Radiology and Imaging Sciences, and the Indiana Alzheimer Disease Center, Indiana University School of Medicine, Indianapolis, IN, USA.
- Center for Computational Biology and Bioinformatics, Indiana University School of Medicine, Indianapolis, IN, USA.
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Murali G, Modigunta JKR, Park S, Lee S, Lee H, Yeon J, Kim H, Park YH, Park SY, Durrant JR, Cha H, An TK, In I. Enhancing Light Absorption and Prolonging Charge Separation in Carbon Quantum Dots via Cl-Doping for Visible-Light-Driven Photocharge-Transfer Reactions. ACS Appl Mater Interfaces 2021; 13:34648-34657. [PMID: 34279075 DOI: 10.1021/acsami.1c01879] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Limited light absorption beyond the UV region and rapid photocarrier recombination are critical impediments for the improved photocatalytic performance of carbon quantum dots (CQDs) under visible-light irradiation. Herein, we demonstrate single-step microwave-assisted syntheses of O-CQDs (typical CQDs terminated by carboxylic and hydroxyl functional groups) from a sucrose precursor and Cl-doped CQDs (Cl-CQDs) from a sucralose precursor in short reaction times and without using obligatory strong acids for Cl doping. The doping of Cl into the CQDs is observed to widen the absorption range and facilitate an enhanced separation of photoexcited charge carriers, which is confirmed by the results of optical absorption, photothermal response, and pump-probe ultrafast transient absorption spectroscopy measurements of the O-CQDs and Cl-CQDs. The photoexcited charge carriers with their longer lifetimes in Cl-CQDs enabled the quick degradation of methylene blue dye, rapid conversion of Ag+ ions to metallic Ag nanoparticles on the CQD surfaces, and reduction of GO to a well-dispersed rGO through the photoelectron transfer reactions under visible-light irradiation. The facile Cl doping strategy, hybridization of Ag nanoparticles or rGO to CQDs, and the elevated charge separation mechanism would open up new avenues in designing CQD-based materials for futuristic applications.
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Affiliation(s)
- G Murali
- Department of Polymer Science and Engineering, Department of IT-Energy Convergence (BK21 FOUR), Chemical Industry Institute, Korea National University of Transportation, Chungju 27469, Republic of Korea
| | - Jeevan Kumar Reddy Modigunta
- Department of Polymer Science and Engineering, Department of IT-Energy Convergence (BK21 FOUR), Chemical Industry Institute, Korea National University of Transportation, Chungju 27469, Republic of Korea
| | - Seongmin Park
- Department of Polymer Science and Engineering, Department of IT-Energy Convergence (BK21 FOUR), Chemical Industry Institute, Korea National University of Transportation, Chungju 27469, Republic of Korea
| | - Seongeun Lee
- Department of Polymer Science and Engineering, Department of IT-Energy Convergence (BK21 FOUR), Chemical Industry Institute, Korea National University of Transportation, Chungju 27469, Republic of Korea
| | - Hwiyoung Lee
- Department of Polymer Science and Engineering, Department of IT-Energy Convergence (BK21 FOUR), Chemical Industry Institute, Korea National University of Transportation, Chungju 27469, Republic of Korea
| | - Jiwon Yeon
- Department of Polymer Science and Engineering, Department of IT-Energy Convergence (BK21 FOUR), Chemical Industry Institute, Korea National University of Transportation, Chungju 27469, Republic of Korea
| | - Hyejin Kim
- Department of Polymer Science and Engineering, Department of IT-Energy Convergence (BK21 FOUR), Chemical Industry Institute, Korea National University of Transportation, Chungju 27469, Republic of Korea
| | - Young Ho Park
- Department of Polymer Science and Engineering, Department of IT-Energy Convergence (BK21 FOUR), Chemical Industry Institute, Korea National University of Transportation, Chungju 27469, Republic of Korea
| | - Sung Young Park
- Department of Chemical and Biological Engineering, Korea National University of Transportation, Chungju 380-702, Republic of Korea
| | - James R Durrant
- Department of Chemistry and Centre for Processable Electronics, Imperial College London, London W12 0BZ, United Kingdom
| | - Hyojung Cha
- Department of Chemistry and Centre for Processable Electronics, Imperial College London, London W12 0BZ, United Kingdom
- Department of Hydrogen & Renewable Energy, Kyungpook National University, Daegu 41566, Republic of Korea
| | - Tae Kyu An
- Department of Polymer Science and Engineering, Department of IT-Energy Convergence (BK21 FOUR), Chemical Industry Institute, Korea National University of Transportation, Chungju 27469, Republic of Korea
| | - Insik In
- Department of Polymer Science and Engineering, Department of IT-Energy Convergence (BK21 FOUR), Chemical Industry Institute, Korea National University of Transportation, Chungju 27469, Republic of Korea
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Kim EJ, Koh SH, Ha J, Na DL, Seo SW, Kim HJ, Park KW, Lee JH, Roh JH, Kwon JC, Yoon SJ, Jung NY, Jeong JH, Jang JW, Kim HJ, Park KH, Choi SH, Kim S, Park YH, Kim BC, Kim YE, Kwon HS, Park HH, Jin JH. Increased telomere length in patients with frontotemporal dementia syndrome. J Neurol Sci 2021; 428:117565. [PMID: 34311139 DOI: 10.1016/j.jns.2021.117565] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Revised: 06/22/2021] [Accepted: 07/01/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND Telomeres are repetitive DNA sequences of TTAGGG at the ends of chromosomes. Many studies have shown that telomere shortening is associated with aging-related diseases, such as cardiovascular diseases, hypertension, diabetes, cancer, and various neurodegenerative diseases, including Alzheimer's disease, vascular dementia, Parkinson's disease, and dementia with Lewy bodies. However, changes in telomere length (TL) in patients with frontotemporal dementia (FTD) syndrome are unclear. Accordingly, in this study, we assessed TL in blood samples from patients with FTD syndrome. METHODS Absolute TL was measured in peripheral blood leukocytes from 53 patients with FTD syndromes (25 with behavioral variant FTD, 19 with semantic variant primary progressive aphasia [PPA], six with nonfluent/agrammatic variant PPA, and three with amyotrophic lateral sclerosis [ALS] plus) and 28 cognitively unimpaired (CU) controls using terminal restriction fragment analysis. RESULTS TL was significantly longer in the FTD group than in the CU group. All FTD subtypes had significantly longer TL than controls. There were no significant differences in TL among FTD syndromes. No significant correlations were found between TL and demographic factors in the FTD group. CONCLUSIONS Longer telomeres were associated with FTD syndrome, consistent with a recent report demonstrating that longer telomeres are related to ALS. Therefore, our results may support a shared biology between FTD and ALS. More studies with larger sample sizes are needed.
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Affiliation(s)
- Eun-Joo Kim
- Department of Neurology, Pusan National University Hospital, Pusan National University School of Medicine and Medical Research Institute, Busan, Republic of Korea
| | - Seong-Ho Koh
- Department of Neurology, Hanyang University College of Medicine, Gyeonggi-do, Republic of Korea.
| | - Jungsoon Ha
- Department of Neurology, Hanyang University College of Medicine, Gyeonggi-do, Republic of Korea; GemVax & Kael Co., Ltd, Gyeonggi-do, Republic of Korea
| | - Duk L Na
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Sang Won Seo
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Hee-Jin Kim
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Kyung Won Park
- Department of Neurology, Dong-A Medical Center, Dong-A University College of Medicine, Busan, Republic of Korea
| | - Jae-Hong Lee
- Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jee Hoon Roh
- Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jay C Kwon
- Department of Neurology, Changwon Fatima Hospital, Changwon, Republic of Korea
| | - Soo Jin Yoon
- Department of Neurology, Eulgi University Hospital, Daejeon, Republic of Korea
| | - Na-Yeon Jung
- Department of Neurology, Pusan National University Yangsan Hospital, Research Institute for Convergence of Biomedical Science and Technology, Busan, Republic of Korea
| | - Jee H Jeong
- Department of Neurology, Ewha Womans University Hospital, Seoul, Republic of Korea
| | - Jae-Won Jang
- Department of Neurology, Kangwon National University Hospital, Chuncheon, Republic of Korea
| | - Hee-Jin Kim
- Department of Neurology, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Kee Hyung Park
- Department of Neurology, Gachon University Gil Hospital, Incheon, Republic of Korea
| | - Seong Hye Choi
- Department of Neurology, Inha University School of Medicine, Incheon, Republic of Korea
| | - SangYun Kim
- Department of Neurology, Seoul National University College of Medicine and Clinical Neuroscience Center, Seoul National University Bundang Hospital, Gyeonggi-do, Republic of Korea
| | - Young Ho Park
- Department of Neurology, Seoul National University College of Medicine and Clinical Neuroscience Center, Seoul National University Bundang Hospital, Gyeonggi-do, Republic of Korea
| | - Byeong C Kim
- Department of Neurology, Chonnam National University Medical School, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Young-Eun Kim
- Department of Laboratory Medicine, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - Hyuk Sung Kwon
- Department of Neurology, Hanyang University College of Medicine, Gyeonggi-do, Republic of Korea
| | - Hyun-Hee Park
- Department of Neurology, Hanyang University College of Medicine, Gyeonggi-do, Republic of Korea
| | - Jeong-Hwa Jin
- Department of Neurology, Hanyang University College of Medicine, Gyeonggi-do, Republic of Korea
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Park SJ, Park YH. Simplified technique of in-office secondary tracheoesophageal puncture with immediate voice prosthesis placement under transnasal esophagoscope guidance. Eur Ann Otorhinolaryngol Head Neck Dis 2021; 138 Suppl 2:53-54. [PMID: 34116948 DOI: 10.1016/j.anorl.2021.04.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 03/17/2021] [Accepted: 04/20/2021] [Indexed: 10/21/2022]
Affiliation(s)
- S J Park
- Department of Otorhinolaryngology-Head and Neck Surgery, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 10 63-ro, Yeongdeungpo-gu, Seoul, 07345, Korea
| | - Y H Park
- Department of Otorhinolaryngology-Head and Neck Surgery, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 10 63-ro, Yeongdeungpo-gu, Seoul, 07345, Korea.
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Youn YC, Lee BS, Kim GJ, Ryu JS, Lim K, Lee R, Suh J, Park YH, Pyun JM, Ryu N, Kang MJ, Kim HR, Kang S, An SSA, Kim S. Blood Amyloid-β Oligomerization as a Biomarker of Alzheimer's Disease: A Blinded Validation Study. J Alzheimers Dis 2021; 75:493-499. [PMID: 32310175 DOI: 10.3233/jad-200061] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND Oligomeric amyloid-β (Aβ) is one of the major contributors to the pathomechanism of Alzheimer's disease (AD); Aβ oligomerization in plasma can be measured using a Multimer Detection System-Oligomeric Aβ (MDS-OAβ) after incubation with spiked synthetic Aβ. OBJECTIVE We evaluated the clinical sensitivity and specificity of the MDS-OAβ values for prediction of AD. METHODS The MDS-OAβ values measured using inBlood™ OAβ test in heparin-treated plasma samples from 52 AD patients in comparison with 52 community-based subjects with normal cognition (NC). The inclusion criterion was proposed by the NINCDS-ADRDA and additionally required at least 6 months of follow-up from the initial clinical diagnosis in the course of AD. RESULTS The MDS-OAβ values were 1.43±0.30 ng/ml in AD and 0.45±0.19 (p < 0.001) in NC, respectively. Using a cut-off value of 0.78 ng/ml, the results revealed 100% sensitivity and 92.31% specificity. CONCLUSION MDS-OAβ to measure plasma Aβ oligomerization is a valuable blood-based biomarker for clinical diagnosis of AD, with high sensitivity and specificity.
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Affiliation(s)
- Young Chul Youn
- Department of Neurology, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Byoung Sub Lee
- Research and Development, PeopleBio Inc., Gyeonggi-do, Republic of Korea
| | - Gwang Je Kim
- Research and Development, PeopleBio Inc., Gyeonggi-do, Republic of Korea
| | - Ji Sun Ryu
- Research and Development, PeopleBio Inc., Gyeonggi-do, Republic of Korea
| | - Kuntaek Lim
- Research and Development, PeopleBio Inc., Gyeonggi-do, Republic of Korea
| | - Ryan Lee
- Research and Development, PeopleBio Inc., Gyeonggi-do, Republic of Korea
| | - Jeewon Suh
- Department of Neurology, Seoul National University College of Medicine & Neurocognitive Behavior Center, Seoul National University Bundang Hospital, Gyeonggi-do, Republic of Korea
| | - Young Ho Park
- Department of Neurology, Seoul National University College of Medicine & Neurocognitive Behavior Center, Seoul National University Bundang Hospital, Gyeonggi-do, Republic of Korea
| | - Jung-Min Pyun
- Department of Neurology, Seoul National University College of Medicine & Neurocognitive Behavior Center, Seoul National University Bundang Hospital, Gyeonggi-do, Republic of Korea
| | - Nayoung Ryu
- Department of Neurology, Seoul National University College of Medicine & Neurocognitive Behavior Center, Seoul National University Bundang Hospital, Gyeonggi-do, Republic of Korea
| | - Min Ju Kang
- Department of Neurology, Veterans Health Service Medical Center, Seoul, Republic of Korea
| | - Hye Ryoun Kim
- Department of Laboratory Medicine, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Sungmin Kang
- Research and Development, PeopleBio Inc., Gyeonggi-do, Republic of Korea
| | - Seong Soo A An
- Department of Bionanotechnology, Gachon University, Gyeonggi-do, Republic of Korea
| | - SangYun Kim
- Department of Neurology, Seoul National University College of Medicine & Neurocognitive Behavior Center, Seoul National University Bundang Hospital, Gyeonggi-do, Republic of Korea
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Pyun JM, Kang MJ, Ryoo N, Suh J, Youn YC, Park YH, Kim S. Amyloid Metabolism and Amyloid-Targeting Blood-Based Biomarkers of Alzheimer's Disease. J Alzheimers Dis 2021; 75:685-696. [PMID: 32390633 DOI: 10.3233/jad-200104] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Amyloid-β (Aβ) is a key protein in Alzheimer's disease (AD) in that its accumulation induces complex pathological changes. Although there has been extensive research on the metabolism of Aβ in AD, new compelling results have recently emerged. Historically, the production and clearance of Aβ have been thought to originate in the central nervous system (CNS). However, recent evidence suggests that the production and clearance of Aβ can also occur in the peripheral system, and that the peripherally driven Aβ migrates to the CNS and induces amyloidopathy with subsequent AD pathologic changes in the brain. This concept implies that AD is not restricted to the CNS but is a systemic disease instead. As such, the development of blood-based biomarkers targeting Aβ is of great interest. Central and peripheral Aβ are both active contributors to the pathology of AD and interact bidirectionally. Measuring peripheral Aβ is not just observing the reflection of the residual Aβ removed from the CNS but also tracking the ongoing process of AD pathology. Additionally, blood-based biomarkers could be a more accessible tool in clinical and research settings. Through arduous research, several blood-based biomarker assays have demonstrated notable results. In this review, we describe the metabolism of Aβ and the amyloid-targeting blood-based biomarkers of AD.
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Affiliation(s)
- Jung-Min Pyun
- Department of Neurology, Seoul National University College of Medicine and Seoul National University Bundang Hospital, Seongnam-si, Republic of Korea
| | - Min Ju Kang
- Department of Neurology, Veterans Medical Research Institute, Veterans Health Service Medical Center, Seoul, Republic of Korea
| | - Nayoung Ryoo
- Department of Neurology, Seoul National University College of Medicine and Seoul National University Bundang Hospital, Seongnam-si, Republic of Korea
| | - Jeewon Suh
- Department of Neurology, Seoul National University College of Medicine and Seoul National University Bundang Hospital, Seongnam-si, Republic of Korea
| | - Young Chul Youn
- Department of Neurology, Chung-Ang University Hospital, Seoul, Republic of Korea
| | - Young Ho Park
- Department of Neurology, Seoul National University College of Medicine and Seoul National University Bundang Hospital, Seongnam-si, Republic of Korea
| | - SangYun Kim
- Department of Neurology, Seoul National University College of Medicine and Seoul National University Bundang Hospital, Seongnam-si, Republic of Korea
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Pyun JM, Ryu JS, Lee R, Shim KH, Youn YC, Ryoo N, Han SW, Park YH, Kang S, An SSA, Kim S. Plasma Amyloid-β Oligomerization Tendency Predicts Amyloid PET Positivity. Clin Interv Aging 2021; 16:749-755. [PMID: 33958861 PMCID: PMC8096417 DOI: 10.2147/cia.s312473] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 04/17/2021] [Indexed: 01/08/2023] Open
Abstract
Purpose Among other emerging amyloid-targeting blood-based biomarkers, Multimer Detection System-Oligomeric Amyloid-β (MDS-OAβ) measures dynamic changes in concentration of oligomeric amyloid-β (OAβ), which is considered the main pathogenic culprit of Alzheimer’s disease (AD), in plasma after spiking with synthetic amyloid-β (Aβ). We aimed to investigate the predictability of MDS-OAβ on amyloid positron emission tomography (PET) positivity. Patients and Methods A total of 96 subjects who visited Seoul National University Bundang Hospital for medical check-up complaining of cognitive decline and had undergone extensive medical assessment were recruited. Amyloid statuses were dichotomized into positive or negative based on visual assessment of amyloid PET. Plasma OAβ concentration was measured by MDS-OAβ. In the previous validation study, 0.78ng/mL was established as the cut-off value and the plasma OAβ concentration higher than or equal to the cut-off value was defined as MDS-OAβ positive. Results MDS-OAβ positivity could discriminate amyloid PET positivity with the AUC value of 0.855 (95% CI 0.776–0.933). Adding MDS-OAβ positivity to prediction models including age, MMSE score, and APOE ε4 status improved performance up to the AUC value of 0.926 (95% CI 0.871–0.980). Conclusion The Aβ oligomerization tendency in plasma could predict amyloid PET positivity with high performance, and, when it is combined with age, MMSE score, and APOE ε4 status, predictability was improved substantially. This suggests the potential of MDS-OAβ as a useful initial stage test in the clinical and research fields of AD.
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Affiliation(s)
- Jung-Min Pyun
- Department of Neurology, Uijeongbu Eulji Medical Center, Eulji University, Uijeongbu-si, Gyeonggi-do, Republic of Korea
| | - Ji Sun Ryu
- Research and Development, PeopleBio Inc., Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Ryan Lee
- Research and Development, PeopleBio Inc., Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Kyu Hawn Shim
- Department of Neurology, Veterans Medical Research Institute, Veterans Health Service Medical Center, Seoul, Republic of Korea
| | - Young Chul Youn
- Department of Neurology, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Nayoung Ryoo
- Department of Neurology, Seoul National University College of Medicine and Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Sang-Won Han
- Department of Neurology, Seoul National University College of Medicine and Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Young Ho Park
- Department of Neurology, Seoul National University College of Medicine and Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Sungmin Kang
- Research and Development, PeopleBio Inc., Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Seong Soo A An
- Department of Bionanotechnology, Gachon University, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - SangYun Kim
- Department of Neurology, Seoul National University College of Medicine and Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
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Han SW, Park YH, Ryoo N, Kim K, Pyun JM, Kim S. Pearls & Oy-sters: Idiopathic Normal Pressure Hydrocephalus With Synucleinopathy: Diagnosis and Treatment. Neurology 2021; 97:196-199. [PMID: 33931530 DOI: 10.1212/wnl.0000000000012099] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Sang-Won Han
- From the Department of Neurology, Seoul National University College of Medicine and Seoul National University Bundang Hospital, Republic of Korea
| | - Young Ho Park
- From the Department of Neurology, Seoul National University College of Medicine and Seoul National University Bundang Hospital, Republic of Korea.
| | - Nayoung Ryoo
- From the Department of Neurology, Seoul National University College of Medicine and Seoul National University Bundang Hospital, Republic of Korea
| | - Kitae Kim
- From the Department of Neurology, Seoul National University College of Medicine and Seoul National University Bundang Hospital, Republic of Korea
| | - Jung-Min Pyun
- From the Department of Neurology, Seoul National University College of Medicine and Seoul National University Bundang Hospital, Republic of Korea
| | - SangYun Kim
- From the Department of Neurology, Seoul National University College of Medicine and Seoul National University Bundang Hospital, Republic of Korea
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Youn YC, Pyun JM, Ryu N, Baek MJ, Jang JW, Park YH, Ahn SW, Shin HW, Park KY, Kim SY. Use of the Clock Drawing Test and the Rey-Osterrieth Complex Figure Test-copy with convolutional neural networks to predict cognitive impairment. Alzheimers Res Ther 2021; 13:85. [PMID: 33879200 PMCID: PMC8059231 DOI: 10.1186/s13195-021-00821-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [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: 11/29/2020] [Accepted: 04/05/2021] [Indexed: 11/10/2022]
Abstract
BACKGROUND The Clock Drawing Test (CDT) and Rey-Osterrieth Complex Figure Test (RCFT) are widely used as a part of neuropsychological test batteries to assess cognitive function. Our objective was to confirm the prediction accuracies of the RCFT-copy and CDT for cognitive impairment (CI) using convolutional neural network algorithms as a screening tool. METHODS The CDT and RCFT-copy data were obtained from patients aged 60-80 years who had more than 6 years of education. In total, 747 CDT and 980 RCFT-copy figures were utilized. Convolutional neural network algorithms using TensorFlow (ver. 2.3.0) on the Colab cloud platform ( www.colab. RESEARCH google.com ) were used for preprocessing and modeling. We measured the prediction accuracy of each drawing test 10 times using this dataset with the following classes: normal cognition (NC) vs. mildly impaired cognition (MI), NC vs. severely impaired cognition (SI), and NC vs. CI (MI + SI). RESULTS The accuracy of the CDT was better for differentiating MI (CDT, 78.04 ± 2.75; RCFT-copy, not being trained) and SI from NC (CDT, 91.45 ± 0.83; RCFT-copy, 90.27 ± 1.52); however, the RCFT-copy was better at predicting CI (CDT, 77.37 ± 1.77; RCFT, 83.52 ± 1.41). The accuracy for a 3-way classification (NC vs. MI vs. SI) was approximately 71% for both tests; no significant difference was found between them. CONCLUSIONS The two drawing tests showed good performance for predicting severe impairment of cognition; however, a drawing test alone is not enough to predict overall CI. There are some limitations to our study: the sample size was small, all the participants did not perform both the CDT and RCFT-copy, and only the copy condition of the RCFT was used. Algorithms involving memory performance and longitudinal changes are worth future exploration. These results may contribute to improved home-based healthcare delivery.
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Affiliation(s)
- Young Chul Youn
- Department of Neurology, College of Medicine, Chung-Ang University, Seoul, Republic of Korea
- Department of Medical Informatics, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Jung-Min Pyun
- Department of Neurology, Seoul National University College of Medicine & Seoul National University Bundang Hospital, Seoul, Republic of Korea
| | - Nayoung Ryu
- Department of Neurology, Seoul National University College of Medicine & Seoul National University Bundang Hospital, Seoul, Republic of Korea
| | - Min Jae Baek
- Department of Neurology, Seoul National University College of Medicine & Seoul National University Bundang Hospital, Seoul, Republic of Korea
| | - Jae-Won Jang
- Department of Neurology, Kangwon National University Hospital, Kangwon National University College of Medicine, Chuncheon, Republic of Korea
| | - Young Ho Park
- Department of Neurology, Seoul National University College of Medicine & Seoul National University Bundang Hospital, Seoul, Republic of Korea
| | - Suk-Won Ahn
- Department of Neurology, College of Medicine, Chung-Ang University, Seoul, Republic of Korea
| | - Hae-Won Shin
- Department of Neurology, College of Medicine, Chung-Ang University, Seoul, Republic of Korea
| | - Kwang-Yeol Park
- Department of Neurology, College of Medicine, Chung-Ang University, Seoul, Republic of Korea
- Department of Medical Informatics, Chung-Ang University College of Medicine, Seoul, Republic of Korea
| | - Sang Yun Kim
- Department of Medical Informatics, Chung-Ang University College of Medicine, Seoul, Republic of Korea.
- Department of Neurology, Seoul National University College of Medicine & Neurocognitive Behavior Center, Seoul National University Bundang Hospital, 300 Gumi-dong, Bundang-gu, Seongnam-si, Gyeonggi-do, 463-707, Republic of Korea.
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