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Raghunathan S, Kandasamy S, Balakrishna Pillai A, Senthilathiban DP, Thajuddin N, Rasool Kamli M, Sabir JSM, Lee SY, Kim JW, Davoodbasha M. Synthesis of biocomposites from microalgal peptide incorporated polycaprolactone/ κ- carrageenan nanofibers and their antibacterial and wound healing property. Int J Pharm 2024; 655:124052. [PMID: 38552751 DOI: 10.1016/j.ijpharm.2024.124052] [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: 12/16/2023] [Revised: 03/20/2024] [Accepted: 03/24/2024] [Indexed: 04/07/2024]
Abstract
Antimicrobial peptides (AMPs) are promising novel agents for targeting a wide range of pathogens. In this study, microalgal peptides derived from native microalgae were incorporated into polycaprolactone (PCL) with ƙ-Carrageenan (ƙ-C) forming nanofibers using the electrospinning method. The peptides incorporated in the nanofibers were characterized by fourier infrared spectroscopy, thermogravimetric analysis, scanning electron microscopy (SEM), and contact angle measurement. The results showed that peptides with molecular weights < 10 kDa, when loaded into nanofibers, exhibited lower wettability. The SEM analysis revealed a thin, smooth, interconnected bead-like structures. The antimicrobial activity of the electrospun nanofibers was evaluated through disc diffusion, and minimum inhibitory activity against Escherichia coli (MTTC 443), and Staphylococcus aureus (MTTC 96), resulting in zones of inhibition of 24 ± 0.5 mm and 14 ± 0.5 mm, respectively. The in vitro biocompatibility of the synthesized nanofibers was confirmed using in HEK 293 cell lines with an increased cell viability. Interestingly, the fibers also exhibited a significant wound-healing properties when used in vitro scratch assays. In conclusion, algal peptides incorporated with PCL/ ƙ-C were found to exhibit antimicrobial and biocompatible biomaterials for wound healing applications.
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Affiliation(s)
- Sathya Raghunathan
- School of Life Sciences, B.S. Abdur Rahman Crescent Institute of Science and Technology, Chennai 620048, India
| | - Sangeetha Kandasamy
- Department of Physics, Muthayammamal College of Arts and Sciences, Rasipuram - 637408, Tamil Nadu, India
| | | | | | - Nooruddin Thajuddin
- Crescent Global Outreach Mission (CGOM), B.S. Abdur Rahman Crescent Institute of Science and Technology, Chennai 620048, India
| | - Majid Rasool Kamli
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; Center of Excellence in Bionanoscience Research, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Jamal S M Sabir
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; Center of Excellence in Bionanoscience Research, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Sang-Yul Lee
- Centre for Surface Technology and Applications, Department of Material Engineering, Korea Aerospace University, Goyang 10540, Republic of Korea
| | - Jung-Wan Kim
- Centre for Surface Technology and Applications, Department of Material Engineering, Korea Aerospace University, Goyang 10540, Republic of Korea; Research Center for Bio Material and Process Development, Division of Bioengineering, Incheon National University, Incheon 22012, Republic of Korea.
| | - MubarakAli Davoodbasha
- School of Life Sciences, B.S. Abdur Rahman Crescent Institute of Science and Technology, Chennai 620048, India; Crescent Global Outreach Mission (CGOM), B.S. Abdur Rahman Crescent Institute of Science and Technology, Chennai 620048, India; Centre for Surface Technology and Applications, Department of Material Engineering, Korea Aerospace University, Goyang 10540, Republic of Korea; Research Center for Bio Material and Process Development, Division of Bioengineering, Incheon National University, Incheon 22012, Republic of Korea.
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Saravanan V, Davoodbasha M, Rajesh A, Nooruddin T, Lee SY, Kim JW. Extraction and characterization of Chitosan from Shell of Borassus flabellifer and their antibacterial and antioxidant applications. Int J Biol Macromol 2023; 253:126592. [PMID: 37659486 DOI: 10.1016/j.ijbiomac.2023.126592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 08/26/2023] [Accepted: 08/27/2023] [Indexed: 09/04/2023]
Abstract
Chitosan is a bio-polymer made up of repeating units of N-acetyl glucosamine and glucosamine joined together by (1-4)-glycosidic linkages. Various bioresources have been used to develop bioactive materials that have a wide range of applications in different fields, including industry and medicine. Borassus flabellifer is a well-known source of chitin in the sub-Indian continent and is used in digestion, pharmaceuticals, and other applications. Chitin can be extracted from B. flabellifer fruit shells through demineralization and deproteinization and then converted into chitosan through deacetylation. This study aimed to investigate the biological activity of chitosan extracted from B. flabellifer fruit shells and to analyze its molecular structure using FT-IR analysis. Results showed the presence of NH, OH, and CO stretching, indicating the presence of various functional groups in chitosan. Scanning electron microscopic study revealed the topography of the chitosan. Well-diffusion and MIC tests showed that chitosan exhibited activity against E. coli and S. aureus. The chitosan extract also exhibited potential antioxidant polymer by scavenging free radicals.
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Affiliation(s)
- Vishwapriya Saravanan
- School of Life Sciences, B.S. Abdur Rahman Crescent Institute of Science and Technology, Chennai 600048, India
| | - MubarakAli Davoodbasha
- School of Life Sciences, B.S. Abdur Rahman Crescent Institute of Science and Technology, Chennai 600048, India; Centre for Surface Technology and Applications, Korea Aerospace University, Goyang 10540, Republic of Korea; Research Centre for Bio Material and Process Development, Incheon National University, Incheon 22012, Republic of Korea.
| | - Arjun Rajesh
- School of Life Sciences, B.S. Abdur Rahman Crescent Institute of Science and Technology, Chennai 600048, India; Department of Biotechnology, Northeastern University, Boston, MA 02115, USA
| | - Thajuddin Nooruddin
- School of Life Sciences, B.S. Abdur Rahman Crescent Institute of Science and Technology, Chennai 600048, India
| | - Sang-Yul Lee
- Centre for Surface Technology and Applications, Korea Aerospace University, Goyang 10540, Republic of Korea
| | - Jung-Wan Kim
- Centre for Surface Technology and Applications, Korea Aerospace University, Goyang 10540, Republic of Korea; Research Centre for Bio Material and Process Development, Incheon National University, Incheon 22012, Republic of Korea; Division of Bioengineering, Incheon National University, Incheon 22012, Republic of Korea.
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Satpati GG, Gupta S, Biswas RK, Choudhury AK, Kim JW, Davoodbasha M. Microalgae mediated bioremediation of polycyclic aromatic hydrocarbons: Strategies, advancement and regulations. Chemosphere 2023; 344:140337. [PMID: 37797901 DOI: 10.1016/j.chemosphere.2023.140337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 09/14/2023] [Accepted: 09/28/2023] [Indexed: 10/07/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are pervasive in the atmosphere and are one of the emerging pollutants that cause harmful effects in living systems. There are some natural and anthropogenic sources that can produce PAHs in an uncontrolled way. Several health hazards associated with PAHs like abnormality in the reproductive system, endocrine system as well as immune system have been explained. The mutagenic or carcinogenic effects of hydrocarbons in living systems including algae, vertebrates and invertebrates have been discussed. For controlling PAHs, biodegradation has been suggested as an effective and eco-friendly process. Microalgae-based biosorption and biodegradation resulted in the removal of toxic contaminants. Microalgae both in unialgal form and in consortium (with bacteria or fungi) performed good results in bioaccumulation and biodegradation. In the present review, we highlighted the general information about the PAHs, conventional versus advanced technology for removal. In addition microalgae based removal and toxicity is discussed. Furthermore this work provides an idea on modern scientific applications like genetic and metabolic engineering, nanomaterials-based technologies, artificial neural network (ANN), machine learning (ML) etc. As rapid and effective methods for bioremediation of PAHs. With several pros and cons, biological treatments using microalgae are found to be better for PAH removal than any other conventional technologies.
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Affiliation(s)
- Gour Gopal Satpati
- Department of Botany, Bangabasi Evening College, University of Calcutta, Kolkata- 700009, West Bengal, India.
| | - Shalini Gupta
- University School of Environment and Management, Guru Gobind Singh Indraprastha University, Dwarka, Delhi- 110078, India
| | - Rohan Kr Biswas
- Phycology Lab, Department of Botany, Ramakrishna Mission Vivekananda Centenary College, Rahara, Kolkata-700118, India
| | - Avik Kumar Choudhury
- Phycology Lab, Department of Botany, Ramakrishna Mission Vivekananda Centenary College, Rahara, Kolkata-700118, India
| | - Jung-Wan Kim
- Research Centre for Bio Material and Process Development, Incheon National Univeristy, Republic of Korea; Division of Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea.
| | - MubarakAli Davoodbasha
- Research Centre for Bio Material and Process Development, Incheon National Univeristy, Republic of Korea; Centre for Surface Technology and Applications, Korea Aerospace University, Goyang, 10540, Republic of Korea; School of Life Sciences, B.S. Abdur Rahman Crescent Institute of Science and Technology, Chennai, 600048, India.
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Pyo JH, Lee SY, Lee IJ, Kim SM, Kim JW. Beneficial Role of Multi-Disciplinary Treatment for Anaplastic Thyroid Cancer with Initial Distant Metastasis. Int J Radiat Oncol Biol Phys 2023; 117:e616-e617. [PMID: 37785850 DOI: 10.1016/j.ijrobp.2023.06.1996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Anaplastic thyroid cancer (ATC) is a rare, highly aggressive tumor, with median survival around 5 months. Approximately half of the ATC patients presents with distant metastases at diagnosis, showing even more devastating prognosis, yet no outcome analysis had been reported. In this study, we aim to evaluate the clinical outcome of M1 ATC patients, and to define the group of patients who would benefit from local treatment based on multi-disciplinary approach. MATERIALS/METHODS A total of 133 histology-confirmed ATC patients underwent protocol-based multidisciplinary treatment including surgery and chemoradiotherapy (CRT) between May 2016 and January 2022. Patients received intensity-modulated radiotherapy of 30 fractions concurrently with paclitaxel on days 1, 8 and 15 every 4 weeks, and lenvatinib was added upon progression. After 18 fractions of CRT, interim response analysis using modified RECIST was conducted for adaptive treatment planning. We reviewed 58 patients with distant metastasis at diagnosis (stage IVC). Overall survival (OS) and progression-free survival (PFS) were measured from the day of diagnosis. RESULTS Most common metastatic site was lung (91.4%), followed by bone (31.0%) and brain (5.2%). Lenvatinib was added for 35 patients after any sign of progression. Fourteen patients received upfront surgery (16 debulking and 5 total) followed by adjuvant CRT in 16 patients. Thirty-one patients received upfront CRT with 2 patients receiving total resection after sufficient down-staging. Six (10%) patients could not complete radiotherapy but continued receiving systemic treatment. The median follow-up was 5.9 months. The median and 1-year OS were 6.2 months and 20.5%, and PFS were 3.7 months and 3.5%. Total RT dose over 60 Gy significantly improved median OS (7.5 vs 4.1 months, p = 0.012) and median PFS (4.4 vs 3.0, p = 0.010). Patients with less than 10 initial metastatic tumors showed better median OS (9.1 vs 4.6 months, p = 0.002) but not PFS (5.1 vs 3.6, p = 0.485). At interim analysis, early response (CR, PR and SD) of primary tumor was not associated with survival, while progression of distant metastases showed significantly worse median OS (9.8 vs 4.6 months, p = 0.001). More than 10 metastatic tumors (HR 2.73, 95% CI 1.32-5.66) and stable metastasis at interim analysis (HR 2.39, 95% CI 1.04-5.48) remained as significant factor in the multivariable cox regression analysis. Median OS and PFS of patients with less than 10 metastases showing no progression at interim analysis were 9.1 months, and 5.1 months. CONCLUSION Local treatment combined with chemotherapy for M1 ATC patients showed outcome comparable to those of non-metastatic ATC results. Active local treatment should be considered especially for patients with less than 10 metastases, and patients without distant progression in early response evaluation.
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Affiliation(s)
- J H Pyo
- Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - S Y Lee
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - I J Lee
- Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - S M Kim
- Department of Surgery, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - J W Kim
- Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
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Kim J, Sung J, Yang D, Cho KS, Chung BH, Kim J, Kim JW. Optimal Planning Target Margin for Prostate Radiotherapy Based on Interfractional and Intrafractional Variability Assessment during 1.5T MR-Guided Radiotherapy. Int J Radiat Oncol Biol Phys 2023; 117:e401. [PMID: 37785341 DOI: 10.1016/j.ijrobp.2023.06.1534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) MR-guided radiotherapy (MRgRT) provides superior soft-tissue contrast over CT-based image guidance. We collected and analyzed daily pre-treatment (PRE) and real-time motion-monitoring (MM) MR images of patients receiving prostate radiotherapy to assess interfractional and intrafractional variability of prostate using two localization methods: pelvic bony anatomy (bone) and prostate during online adaptive radiotherapy (ART). MATERIALS/METHODS PRE and MM MRIs for the first five fractions of twenty prostate cancer patients who received definitive MRgRT with 1.5T MRI were collected. Using MIM software, rigid registration between PRE MRI and planning CT images based on pelvic bony anatomy and prostate reproduced bone localization and online ART, respectively. To determine interfractional setup margin (SM), prostate was delineated on all PRE MRIs registered after bone and prostate localizations by a radiation oncologist, and centroid values of prostate contours between planning CT and PRE MRIs were compared. To determine interobserver variability, another radiation oncologist, a medical physicist, and a radiotherapist contoured prostate for both localization methods. For internal margin (IM) assessment, we used MM MRIs of the five patients who had all three sets of coronal, sagittal, and axial cine images and determined the maximum contour displacement using in-house MATLAB-based software converting binary image files to 2D cine images with a superimposed grid of 1 mm spacing. RESULTS A total of 100 PRE and 25 MM MRIs were analyzed. Four hundred prostate contours were delineated on MR images registered with planning CT based on both bony anatomy and prostate. After bone localization, SM was 0.57±0.42 mm in left-right (LR), 2.45±1.98 mm in anterior-posterior (AP), and 2.28±2.08 mm in superior-inferior (SI) directions, and IO was 1.06±0.58 mm in LR, 2.32±1.08 mm in AP, and 3.30±1.85 mm in SI directions. After prostate localization, SM was 0.76±0.57 mm in LR, 1.89±1.60 mm in AP, and 2.2±1.79 mm in SI directions, and IO was 1.11±0.55 mm in LR, 2.13±1.07 mm in AP, and 3.53±1.65 mm in SI directions. Average IM was 2.12±0.86 mm, 2.24±1.07 mm, and 2.84±0.88 mm in LR, AP, and SI directions, respectively. CONCLUSION Using daily MRIs from MRgRT, we showed that movements in the SI direction were the largest source of variability in prostate definitive RT. In addition, interobserver variability was a non-negligible source of margin. Optimal PTV margin should also consider internal margin, especially in the SI direction.
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Affiliation(s)
- J Kim
- Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - J Sung
- Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - D Yang
- Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - K S Cho
- Department of Urology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - B H Chung
- Department of Urology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - J Kim
- Department of Radiation Oncology, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - J W Kim
- Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
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Kim GY, Cho YS, An JH, Kim JW, Moon IJ. Rasch Analysis of the Korean Version of the Tinnitus Handicap Inventory. J Clin Med 2023; 12:5785. [PMID: 37762724 PMCID: PMC10531739 DOI: 10.3390/jcm12185785] [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: 06/29/2023] [Revised: 08/17/2023] [Accepted: 08/28/2023] [Indexed: 09/29/2023] Open
Abstract
Tinnitus is the perception of abnormal sounds in the ears or head without external auditory stimulation. While classical test theory is often used in tinnitus questionnaire development, it has limitations in assessing item characteristics. Item response theory (IRT) offers more precise individual ability estimations and identifies key and less important items, making it superior for reliable measurement tools. This study investigated the suitability of the Korean version of the Tinnitus Handicap Inventory (K-THI) as a patient-reported outcome measure (PROM) for clinical trials. Using Rasch analysis based on IRT, we evaluated K-THI's measurement of tinnitus-related disability in 545 patients (40.4% men, 59.6% women). Five items (2, 7, 8, 19, and 24) did not fit the Rasch model, yet a unidimensional scale and good fit for person and item data emerged (person: 0.89; item: 0.98). The three-point rating scale in K-THI proved suitable. IRT allowed precise evaluation of K-THI's properties, vital for reliable PROMs in patient-centered care. Our findings highlight IRT's role in questionnaire development, contributing to the advancement of PROMs.
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Affiliation(s)
- Ga-Young Kim
- Hearing Research Laboratory, Samsung Medical Center, Seoul 06351, Republic of Korea; (G.-Y.K.); (Y.S.C.)
- Medical Research Institute, Sungkyunkwan University School of Medicine, Suwon 16419, Republic of Korea
- Department of Digital Health, Samsung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University, Seoul 06355, Republic of Korea
| | - Young Sang Cho
- Hearing Research Laboratory, Samsung Medical Center, Seoul 06351, Republic of Korea; (G.-Y.K.); (Y.S.C.)
- Department of Otorhinolaryngology-Head and Neck Surgery, Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul 06351, Republic of Korea
| | - Ji Hyun An
- Department of Psychiatry, Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul 06351, Republic of Korea;
| | - Jung-Wan Kim
- Department of Speech and Language Pathology, College of Rehabilitation Sciences, Daegu University, Gyeongsan 38453, Republic of Korea;
| | - Il Joon Moon
- Hearing Research Laboratory, Samsung Medical Center, Seoul 06351, Republic of Korea; (G.-Y.K.); (Y.S.C.)
- Department of Otorhinolaryngology-Head and Neck Surgery, Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul 06351, Republic of Korea
- Samsung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University, Seoul 06355, Republic of Korea
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Kathiravan N, Rajesh A, Kim JW, Davoodbasha M. Isolation and Characterization of Biosurfactant-Producing Soil Fungus Penicillium sp. Appl Biochem Biotechnol 2023:10.1007/s12010-023-04704-6. [PMID: 37642923 DOI: 10.1007/s12010-023-04704-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/16/2023] [Indexed: 08/31/2023]
Abstract
In this study, a fungal species was isolated from rhizospheric soil and identified as Penicillium sp. by ITS sequencing. The Penicillium sp. has been screened for the biosurfactant production, viz., haemolytic activity, oil spreading assay and emulsification index. The biosurfactant from cell-free supernatant was extracted using acid precipitation followed by solvent-solvent extraction. The physiochemical properties of the extracted biosurfactant were analysed using FTIR; the major peaks that show at 1720 cm-1, 1531 cm-1, 1419 cm-1, 1251 cm-1 and 1010 cm-1 correspond to aliphatic chains, sugars and ester carbonyl groups. The fatty acids present in the extracted biosurfactant were analysed using GCMS, in which a molecular mass of 256 and 284 m/z showed the presence of n-hexadecenoic acid and octadecanoic acid respectively which indicate the presence of rhamnolipid, which is a major biosurfactant. The biosurfactant extracted from Penicllium sp. demonstrated antibacterial activity against Escherichia coli and Staphylococcus aureus. In future perspectives, the biosurfactant extracted from the isolated species holds great potential as a broad-spectrum antibacterial agent and could be utilized in various healthcare applications.
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Affiliation(s)
- Naveenkumar Kathiravan
- School of Life Sciences, B.S. Abdur Rahman Crescent Institute of Science and Technology, Chennai, 620048, India
- Aatreal Green Renewable Energy Pvt. Ltd., IITM Research Park, Chennai, 600113, India
| | - Arjun Rajesh
- Department of Biotechnology, College of Science, Northeastern University, Boston, MA, 02115, USA
| | - Jung-Wan Kim
- Department of Biotechnology, College of Science, Northeastern University, Boston, MA, 02115, USA.
| | - MubarakAli Davoodbasha
- School of Life Sciences, B.S. Abdur Rahman Crescent Institute of Science and Technology, Chennai, 620048, India.
- Division of Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea.
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MubarakAli D, Kim H, Venkatesh PS, Kim JW, Lee SY. A Systemic Review on the Synthesis, Characterization, and Applications of Palladium Nanoparticles in Biomedicine. Appl Biochem Biotechnol 2023; 195:3699-3718. [PMID: 35349084 DOI: 10.1007/s12010-022-03840-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/28/2022] [Indexed: 01/25/2023]
Abstract
Palladium nanoparticles (Pd NPs) have been considered as a potential candidate in the field of biomedical applications due to its unique properties such as huge catalytic, hydrogen storage, and sensing behavior. Therefore, Pd NPs have shown to have a significant potential for the development of antimicrobials, wound healing, antioxidant, and anticancer property in recent days. There are plenty of reports that showed superior properties of noble metals. However, only very few studies have been undertaken to explore the advantage of Pd NPs in the field of biomedical applications. This review reports detailed and comprehensive studies comprising of the synthesis, characterization, and potential applications of Pd NPs in biomedicine. This report provides evidences in the literature documented by early researchers to understand the potential applications of Pd NPs to be explored in various fields.
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Affiliation(s)
- Davoodbasha MubarakAli
- School of Life Sciences, B.S. Abdur Rahman Crescent Institute of Science and Technology, Chennai, Tamil Nadu, India
- Centre for Surface Technology and Applications, Korea Aerospace University, Goyang, Republic of Korea
- Division of Bioengineering, Incheon National University, Incheon, Republic of Korea
| | - Hoekun Kim
- Centre for Surface Technology and Applications, Korea Aerospace University, Goyang, Republic of Korea
| | | | - Jung-Wan Kim
- Centre for Surface Technology and Applications, Korea Aerospace University, Goyang, Republic of Korea.
- Division of Bioengineering, Incheon National University, Incheon, Republic of Korea.
| | - Sang-Yul Lee
- Centre for Surface Technology and Applications, Korea Aerospace University, Goyang, Republic of Korea.
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Ko YB, Park YH, MubarakAli D, Lee SY, Kim JW. Synthesis of antibacterial hydroxypropyl methylcellulose and silver nanoparticle biocomposites via solution plasma using silver electrodes. Carbohydr Polym 2023; 302:120341. [PMID: 36604041 DOI: 10.1016/j.carbpol.2022.120341] [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: 08/22/2022] [Revised: 10/23/2022] [Accepted: 11/09/2022] [Indexed: 11/18/2022]
Abstract
The biocomposites of hydroxypropyl methylcellulose (HPMC)/silver nanoparticles (AgNPs) were synthesized using the solution plasma process (SPP). HPMC/AgNPs were synthesized in 1-5 % HPMC solutions using silver electrodes. UV-Vis spectroscopy showed a peak near 400 nm and the peak increased as the concentration of HPMC and discharge time increased. FTIR analysis indicated no change in the chemical structure of the HPMC based biocomposites. Spherical shaped AgNPs with size ranges about 2-18 nm and well dispersed in the porous HPMC matrices with fringed edges were observed by TEM and SEM/EDS analyses. The synthesized biocomposites were found to be thermo-stable by TGA analysis. The inhibition zones of bacterial growth formed by the HPMC/AgNPs biocomposites were in the range of 8-14.3 mm; minimal inhibition concentrations, in the range of 10-15 μg·mL-1 for Gram-negative bacteria; 25-30 μg·mL-1 for Gram-positive bacteria. The biocomposites were non-toxic to the HEK293 cells up to 125 μg·mL-1. The results indicated that the synthesis of antibacterial agents in the HPMC matrix using silver electrodes via SPP would be an efficient and safe way for the development of biopolymer based antimicrobials and wound healing biomaterials.
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Affiliation(s)
- Yu-Been Ko
- Department of Bioengineering and NanoBio Engineering, Graduate School of Incheon National University, Incheon 22012, Republic of Korea
| | - Yoon-Hee Park
- Division of Bioengineering, Incheon National University, Incheon 22012, Republic of Korea
| | - Davoodbasha MubarakAli
- School of Life Sciences, B.S.Abdur Rahman Crescent Institute of Science and Technology, Chennai 600048, India; Research Center for Bio Material and Process Development, Incheon National University, Incheon 22012, Republic of Korea; Department of Material Engineering, Korea Aerospace University, Goyang, Republic of Korea
| | - Sang-Yul Lee
- Department of Material Engineering, Korea Aerospace University, Goyang, Republic of Korea
| | - Jung-Wan Kim
- Department of Bioengineering and NanoBio Engineering, Graduate School of Incheon National University, Incheon 22012, Republic of Korea; Division of Bioengineering, Incheon National University, Incheon 22012, Republic of Korea; Research Center for Bio Material and Process Development, Incheon National University, Incheon 22012, Republic of Korea.
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MubarakAli D, Arunachalam K, Lakshmanan M, Badar B, Kim JW, Lee SY. Unveiling the Anti-Biofilm Property of Hydroxyapatite on Pseudomonas aeruginosa: Synthesis and Strategy. Pharmaceutics 2023; 15:pharmaceutics15020463. [PMID: 36839785 PMCID: PMC9964847 DOI: 10.3390/pharmaceutics15020463] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 01/18/2023] [Accepted: 01/25/2023] [Indexed: 01/31/2023] Open
Abstract
Biofilm-related nosocomial infections may cause a wide range of life-threatening infections. In this regard, Pseudomonas aeruginosa biofilm is becoming a serious health burden due to its capability to develop resistance to natural and synthetic drugs. The utilization of nanoparticles that inhibit biofilm formation is one of the major strategies to control infections caused by biofilm-forming pathogens. Hydroxyapatite (HA) is a synthetic ceramic material having properties similar to natural bones. Herein, a co-precipitation method followed by microwave treatment was used to synthesize HA nanoparticles (HANPs). The resulting HANPs were characterized using X-ray diffraction and transmission electron microscopy. Then, their antibiofilm properties against P. aeruginosa ATCC 10145 were examined in vitro. The needle-shaped HANPs were 30 and 90 nm long in width and length, respectively. The synthesized HANPs inhibited the biofilm formation of P. aeruginosa ATCC 10145 in a concentration-dependent manner, which was validated by light and confocal laser scanning microscopy. Hence, this study demonstrated that HANPs could be used to control the biofilm-related infections of P. aeruginosa.
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Affiliation(s)
- Davoodbasha MubarakAli
- School of Life Sciences, B.S. Abdur Rahman Crescent Institute of Science and Technology, Chennai 620048, India
- Centre for Surface Coating and Technology, Department of Material Engineering, Korea Aerospace University, Goyang 10540, Republic of Korea
- Division of Bioengineering, Incheon National University, Incheon 22012, Republic of Korea
| | - Kannappan Arunachalam
- State Key Laboratory of Microbial Metabolism, Department of Food Science and Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Murugan Lakshmanan
- School of Life Sciences, B.S. Abdur Rahman Crescent Institute of Science and Technology, Chennai 620048, India
| | - Bazigha Badar
- Department of Environmental Science, Amar Singh College, Cluster University Srinagar, Srinagar 190008, India
| | - Jung-Wan Kim
- Centre for Surface Coating and Technology, Department of Material Engineering, Korea Aerospace University, Goyang 10540, Republic of Korea
- Division of Bioengineering, Incheon National University, Incheon 22012, Republic of Korea
- Correspondence: (J.-W.K.); (S.-Y.L.)
| | - Sang-Yul Lee
- Centre for Surface Coating and Technology, Department of Material Engineering, Korea Aerospace University, Goyang 10540, Republic of Korea
- Correspondence: (J.-W.K.); (S.-Y.L.)
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Raghunathan S, Navabshan I, Badar B, Kim JW, MubarakAli D. An investigation of algal peptides to target protein of lower respiratory tract infections: In silico approach. Biocatalysis and Agricultural Biotechnology 2022. [DOI: 10.1016/j.bcab.2022.102585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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12
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Kim HY, Davoodbasha M, Kim JW. Functional characterization of maltodextrin glucosidase for maltodextrin and glycogen metabolism in Vibrio vulnificus MO6-24/O. Arch Microbiol 2022; 204:668. [PMID: 36220932 DOI: 10.1007/s00203-022-03274-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 09/15/2022] [Accepted: 09/28/2022] [Indexed: 11/02/2022]
Abstract
Glycogen is important for transmission of V. vulnificus undergoing disparate environments of nutrient-rich host and nutrient-limited marine environment. The malZ gene of V. vulnificus encoding a maltodextrin glucosidase was cloned and over-expressed in E. coli to investigate its roles in glycogen/maltodextrin metabolism in the pathogen. The malZ gene encoded a protein with a predicted molecular mass of 70 kDa. The optimal pH and temperature of MalZ was 7.0 and 37 °C, respectively. MalZ hydrolyzed maltodextrin to glucose and maltose most efficiently, while hydrolyzed other substrates such as starch, maltose, β-cyclomaltodextrin, and glycogen less efficiently. The activity was enhanced greatly by Mn2+. It also exhibited transglycosylation activity toward excessive maltotriose. The malZ knock-out mutant accumulated 2.3-5.6-fold less glycogen than the wild type when excessive maltodextrin or glucose was added to LB medium, while it accumulated more glycogen than the wild type (3.5-fold) in the presence of excessive maltose. Growth and glycogen accumulation of the mutant were retarded most significantly in the M63 minimal medium supplemented with 0.5% maltodextrin. Side chain length distributions of glycogen molecules were varied by the malZ mutation and types of the excessive carbon source. Based on the results, MalZ of V. vulnificus was likely to be involved in maltose/maltodextrin metabolism, thereby balancing synthesis of glycogen and energy generation in the cell. The bacterium seemed to have multiple and unique pathways for glycogen metabolism according to carbon sources.
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Affiliation(s)
- Hye-Young Kim
- Department of Life Sciences, Graduate School of Incheon National University, Incheon, South Korea
| | - MubarakAli Davoodbasha
- School of Life Sciences, B.S. Abdur Rahman Crescent Institute of Science and Technology, Chennai, India.,Research Center for Bio Material and Process Development, Incheon National University, Incheon, 22012, Republic of Korea
| | - Jung-Wan Kim
- Department of Life Sciences, Graduate School of Incheon National University, Incheon, South Korea. .,Division of Bioengineering, Incheon National University, Incheon, 22012, Republic of Korea. .,Research Center for Bio Material and Process Development, Incheon National University, Incheon, 22012, Republic of Korea.
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R. S, D. M, M.G. MN, N. V, N. T, Kim JW. An Investigation of Pepsin Hydrolysate of Short Antibacterial Peptides Derived from Limnospira Sp. Appl Biochem Biotechnol 2022; 194:5580-5593. [DOI: 10.1007/s12010-022-04023-2] [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] [Accepted: 06/26/2022] [Indexed: 11/02/2022]
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Frenel JS, Kim JW, Aryal N, Asher R, Berton D, Vidal L, Pautier P, Ledermann JA, Penson RT, Oza AM, Korach J, Huzarski T, Pignata S, Colombo N, Park-Simon TW, Tamura K, Sonke GS, Freimund AE, Lee CK, Pujade-Lauraine E. Efficacy of subsequent chemotherapy for patients with BRCA1/2-mutated recurrent epithelial ovarian cancer progressing on olaparib versus placebo maintenance: post-hoc analyses of the SOLO2/ENGOT Ov-21 trial. Ann Oncol 2022; 33:1021-1028. [PMID: 35772665 DOI: 10.1016/j.annonc.2022.06.011] [Citation(s) in RCA: 40] [Impact Index Per Article: 20.0] [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: 02/13/2022] [Revised: 06/16/2022] [Accepted: 06/20/2022] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND In the SOLO2 trial (ENGOT Ov-21; NCT01874353), maintenance olaparib in patients with platinum-sensitive relapsed ovarian cancer (PSROC) and BRCA mutation significantly improved progression-free survival (PFS) and prolonged overall survival (OS). Following disease progression on olaparib, efficacy of subsequent chemotherapy remains unknown. PATIENTS AND METHODS We conducted a post-hoc hypothesis-generating analysis of SOLO2 data to determine the efficacy of different chemotherapy regimens following RECIST disease progression in patients who received olaparib or placebo. We evaluated time to second progression (TTSP) calculated from the date of RECIST progression to the next progression/death. RESULTS The study population comprised 147 patients who received chemotherapy as their first subsequent treatment after RECIST progression. Of these, 69 (47%) and 78 (53%) were originally randomized to placebo and olaparib arms, respectively. In the placebo-treated cohort, 27/69 and 42/69 received non-platinum and platinum-based chemotherapy, respectively, compared with 24/78 and 54/78, respectively, in the olaparib-treated cohort. Among patients treated with chemotherapy (N = 147), TTSP was significantly longer in the placebo than in the olaparib arm: 12.1 versus 6.9 months [hazard ratio (HR) 2.17, 95% confidence interval (CI) 1.47-3.19]. Similar result was obtained on multivariable analysis adjusting for prognostic factors at RECIST progression (HR 2.13, 95% CI 1.41-3.22). Among patients treated with platinum-based chemotherapy (n = 96), TTSP was significantly longer in the placebo arm: 14.3 versus 7.0 months (HR 2.89, 95% CI 1.73-4.82). Conversely, among patients treated with non-platinum-based chemotherapy (n = 51), the TTSP was comparable in the placebo and olaparib arms: 8.3 versus 6.0 months (HR 1.58, 95% CI 0.86-2.90). CONCLUSIONS Following progression from maintenance olaparib in the recurrent setting, the efficacy of platinum-based subsequent chemotherapy seems to be reduced in BRCA1/2-mutated patients with PSROC compared to patients not previously receiving poly (ADP-ribose) polymerase inhibitors (PARPi). The optimal strategy for patients who relapse after PARPi is an area of ongoing research.
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Affiliation(s)
- J S Frenel
- Institut de Cancerologie de l'Ouest, GINECO, GINEGEPS, Centre René Gauducheau, Saint-Herblain, France.
| | - J W Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - N Aryal
- NHMRC CTC Centre, University of Sydney, Camperdown, Sydney, Australia
| | - R Asher
- NHMRC CTC Centre, University of Sydney, Camperdown, Sydney, Australia
| | - D Berton
- Institut de Cancerologie de l'Ouest, GINECO, GINEGEPS, Centre René Gauducheau, Saint-Herblain, France
| | - L Vidal
- GEICO & H Clínic de Barcelona, Barcelona, Spain
| | - P Pautier
- GINECO & Gustave Roussy Cancer Center, Villejuif, France
| | | | - R T Penson
- Massachusetts General Hospital, Boston, USA
| | - A M Oza
- Princess Margaret Cancer Centre, Toronto, Canada
| | - J Korach
- ISGO & Chaim Sheba Medical Center, Tel Aviv University, Tel Aviv, Israel
| | - T Huzarski
- Department of Genetics and Pathology, Pomeranian Medical University, Szczecin, Poland
| | - S Pignata
- MITO & Department of Urology and Gynecology, Istituto Nazionale Tumori IRCCS Fondazione G. Pascale Napoli, Naples, Italy
| | - N Colombo
- MaNGO & European Institute of Oncology IRCCS and University of Milan-Bicocca, Milano, Italy
| | - T W Park-Simon
- AGO & Medical School, Department of Gynecologic Oncology, Hannover, Hannover, Germany
| | - K Tamura
- Department of Breast and Medical Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - G S Sonke
- DGOG & Netherlands Cancer Institute, Amsterdam, Netherlands
| | - A E Freimund
- Peter MacCallum Cancer Centre, Melbourne, Australia
| | - C K Lee
- NHMRC CTC Centre, University of Sydney, Camperdown, Sydney, Australia
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Han AR, Kim H, Park JT, Kim JW. Characterization of a cold-adapted debranching enzyme and its role in glycogen metabolism and virulence of Vibrio vulnificus MO6-24/O. J Microbiol 2022; 60:375-386. [PMID: 35157220 DOI: 10.1007/s12275-022-1507-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 12/27/2021] [Accepted: 12/30/2021] [Indexed: 12/19/2022]
Abstract
Vibrio vulnificus MO6-24/O has three genes annotated as debranching enzymes or pullulanase genes. Among them, the gene encoded by VVMO6_03032 (vvde1) shares a higher similarity at the amino acid sequence level to the glycogen debranching enzymes, AmyX of Bacillus subtilis (40.5%) and GlgX of Escherichia coli (55.5%), than those encoded by the other two genes. The vvde1 gene encoded a protein with a molecular mass of 75.56 kDa and purified Vvde1 efficiently hydrolyzed glycogen and pullulan to shorter chains of maltodextrin and maltotriose (G3), respectively. However, it hydrolyzed amylopectin and soluble starch far less efficiently, and β-cyclodextrin (β-CD) only rarely. The optimal pH and temperature of Vvde1 was 6.5 and 25°C, respectively. Vvde1 was a cold-adapted debranching enzyme with more than 60% residual activity at 5°C. It could maintain stability for 2 days at 25°C and 1 day at 35°C, but it destabilized drastically at 40°C. The Vvde1 activity was inhibited considerably by Cu2+, Hg2+, and Zn2+, while it was slightly enhanced by Co2+, Ca2+, Ni2+, and Fe2+. The vvde1 knock-out mutant accumulated more glycogen than the wild-type in media supplemented with 1.0% maltodextrin; however, the side chain length distribution of glycogen was similar to that of the wild-type except G3, which was much more abundant in the mutant. Therefore, Vvde1 seemed to debranch glycogen with the degree of polymerization 3 (DP3) as the specific target branch length. Virulence of the pathogen against Caenorhabditis elegans was attenuated significantly by the vvde1 mutation. These results suggest that Vvde1 might be a unique glycogen debranching enzyme that is involved in both glycogen utilization and shaping of glycogen molecules, and contributes toward virulence of the pathogen.
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Affiliation(s)
- Ah-Reum Han
- Department of Life Sciences, Graduate School of Incheon National University, Incheon, 22102, Republic of Korea
| | - Haeyoung Kim
- Department of Life Sciences, Graduate School of Incheon National University, Incheon, 22102, Republic of Korea
| | - Jong-Tae Park
- Department of Food Science and Technology, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Jung-Wan Kim
- Department of Life Sciences, Graduate School of Incheon National University, Incheon, 22102, Republic of Korea. .,Division of Bioengineering, Incheon National University, Incheon, 22102, Republic of Korea.
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Kim JW, Vella C, Parvez W, Verma R, Majid M, Woltmann G, Pareek M, Bennett J, Agrawal S, Sudhir R, Ahyow L, Tufail M, Haldar P. Impact of COVID-19 on the diagnosis and management of lung cancer and TB. Int J Tuberc Lung Dis 2022; 26:372-374. [PMID: 35351244 DOI: 10.5588/ijtld.22.0045] [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: 11/10/2022] Open
Affiliation(s)
- J W Kim
- Department of Respiratory Sciences, University of Leicester, Leicester, Department of Respiratory Medicine, University Hospitals of Leicester NHS Trust, Leicester
| | - C Vella
- Department of Respiratory Medicine, University Hospitals of Leicester NHS Trust, Leicester
| | - W Parvez
- Department of Respiratory Medicine, University Hospitals of Leicester NHS Trust, Leicester
| | - R Verma
- Department of Respiratory Sciences, University of Leicester, Leicester, Department of Respiratory Medicine, University Hospitals of Leicester NHS Trust, Leicester
| | - M Majid
- Department of Respiratory Medicine, University Hospitals of Leicester NHS Trust, Leicester
| | - G Woltmann
- Department of Respiratory Sciences, University of Leicester, Leicester, Department of Respiratory Medicine, University Hospitals of Leicester NHS Trust, Leicester
| | - M Pareek
- Department of Respiratory Sciences, University of Leicester, Leicester
| | - J Bennett
- Department of Respiratory Medicine, University Hospitals of Leicester NHS Trust, Leicester
| | - S Agrawal
- Department of Respiratory Medicine, University Hospitals of Leicester NHS Trust, Leicester
| | - R Sudhir
- Department of Respiratory Medicine, University Hospitals of Leicester NHS Trust, Leicester
| | - L Ahyow
- UK Health Security Agency, London, UK
| | - M Tufail
- Department of Respiratory Medicine, University Hospitals of Leicester NHS Trust, Leicester
| | - P Haldar
- Department of Respiratory Sciences, University of Leicester, Leicester, Department of Respiratory Medicine, University Hospitals of Leicester NHS Trust, Leicester
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Kim JW, Woo SB, Song JI, Kwon HK. An observational study of hydrodynamic impact on water mass transport due to tidal power generation. Sci Total Environ 2022; 807:151013. [PMID: 34662618 DOI: 10.1016/j.scitotenv.2021.151013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 10/08/2021] [Accepted: 10/11/2021] [Indexed: 06/13/2023]
Abstract
The world's largest Sihwa Tidal Power Plant (TPP), located on the west coast of Korea, was built in 2011 for the purpose of improving water quality and producing renewable energy. After several years of actual operation, most of the original purpose was achieved, but unexpected coastal environmental changes such as tidal flat damage and sediment accumulation also occurred. In this study, in order to understand the causes of these environmental changes, field observations were conducted near TPP, and spatial and temporal variability of flow structure and water exchange process were investigated. Three-dimensional velocity data were collected along the closed line surrounding the outside of the TPP for 11 h during spring tide and analyzed according to two discharge phases: power generation phase (PGP) and drainage phase (DP). The results show that the depth-averaged maximum current velocity was more than three times greater at DP than at PGP. Jet-like flow during DP caused very high horizontal shear, whereas vertical shear was relatively weak, indicating that the horizontal and vertical flow structures were very different. The most notable result is that the mass transport patterns between PGP and DP are significantly different, i.e., during PGP, mass transport is dominated on the left side of the TPP, whereas during DP, it occurs at the front of the TPP. This means that there is a strong spatiotemporal asymmetry between the inflow from the downstream (outside of the TPP) during PGP and the outflow from the upstream (inside of the TPP) during DP. These asymmetric processes can have a significant impact on the material exchange and sediment transport near the TPP. Since observational studies on TPP are extremely rare, this study is expected to contribute to future TPP related research, such as numerical modeling.
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Affiliation(s)
- J W Kim
- Department of Ocean Sciences, Inha University, Incheon 22212, Republic of Korea
| | - S-B Woo
- Department of Ocean Sciences, Inha University, Incheon 22212, Republic of Korea.
| | - J I Song
- Department of Ocean Sciences, Inha University, Incheon 22212, Republic of Korea
| | - H-K Kwon
- Korea Water Resources Corporation, Ansan 15637, Republic of Korea
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Abstract
OBJECTIVES The present study aimed to investigate the incidence of and risk factors for postoperative pneumonia and aspiration pneumonia after hip fracture surgery. DESIGN Retrospective cohort study from 2005 to 2021. SETTING Asan Medical Center in Seoul, Republic of Korea. PARTICIPANTS A total 1,208 patients aged ≥ 65 years who underwent hip fracture surgery. MEASUREMENTS Postoperative pneumonia was defined as cases with new infiltration on chest x-ray or chest computed tomography (CT) after surgery or confirmed by a pulmonologist's consultation and diagnosis. Aspiration pneumonia was defined as: 1) radiologic findings of hospital-acquired pneumonia on chest radiographs or CT, medical record of aspiration pneumonia confirmed by a pulmonologist's consultation, and history of vomiting or aspiration, or 2) gravity-dependent opacity on chest CT when the history of vomiting or aspiration is ambiguous. Patient demographics, past medical history, pre-injury Koval score, Charlson Comorbidity Index (CCI), blood test results, length of hospital stay, and in-hospital mortality were evaluated. A comparison analysis and binary logistic regression were performed to identify the incidence and risk factors for postoperative pneumonia and aspiration pneumonia. RESULTS Postoperative pneumonia was diagnosed in 47 patients (3.9%), including 20 with aspiration pneumonia (1.7%). In the multivariate analysis, postoperative delirium (odds ratio [OR], 3.42; P < 0.001), American Society of Anesthesiologists (ASA) scores ≥ 3 (OR, 2.11; P = 0.021), and CCI (OR, 1.21; P = 0.013) were significant risk factors for postoperative pneumonia. Male sex (OR, 3.01; P = 0.017), postoperative delirium (OR, 3.16; P = 0.014), and preoperative serum albumin levels < 3.5 g/dL (OR, 7.00; P = 0.010) were significant risk factors for aspiration pneumonia. CONCLUSION ASA classification ≥ 3, higher CCI, and postoperative delirium were the risk factors for postoperative pneumonia. Male sex, postoperative delirium, and lower preoperative serum albumin level were the risk factors for aspiration pneumonia. Thus, physicians should pay attention to patients with the risk factors.
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Affiliation(s)
- J Ahn
- Ji Wan Kim, Department of Orthopedic Surgery, University of Ulsan, College of Medicine, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Republic of Korea, Phone: +82-2-3010-3530, Fax: +82-2-2045-4542, Email address: , ORCID: 0000-0002-3524-8706
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Jeong SY, Hwang KT, Oh CW, Kim JW, Sohn OJ, Kim JW, Cho YH, Park KC. Infographic: Mid-term outcomes after the surgical treatment of atypical femoral fractures : minimum three-year follow-up. Bone Joint J 2021; 103-B:1646-1647. [PMID: 34719273 DOI: 10.1302/0301-620x.103b11.bjj-2021-1428] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- S-Y Jeong
- Department of Orthopaedic Surgery, Hanyang University Guri Hospital, Guri, South Korea
| | - K-T Hwang
- Hanyang University College of Medicine, Seoul, South Korea
| | - C-W Oh
- Department of Orthopedic Surgery, Kyungpook National University Hospital, Daegu, South Korea
| | - J-W Kim
- Department of Orthopedic Surgery, Kyungpook National University Hospital, Daegu, South Korea
| | - O J Sohn
- Yeungnam University, Gyeongsan, South Korea
| | - J W Kim
- Department of Orthopaedic Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Y-H Cho
- Daegu Fatima Hospital, Daegu, South Korea
| | - K C Park
- Department of Orthopaedic Surgery, Hanyang University Guri Hospital, Guri, South Korea
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Kim MJ, Kim JW, Kim MS, Choi SY, Na JI. Generalized erythema multiforme-like skin rash following the first dose of COVID-19 vaccine (Pfizer-BioNTech). J Eur Acad Dermatol Venereol 2021; 36:e98-e100. [PMID: 34661942 PMCID: PMC8656619 DOI: 10.1111/jdv.17757] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2021] [Accepted: 10/13/2021] [Indexed: 12/18/2022]
Affiliation(s)
- M J Kim
- Department of Dermatology, Seoul National University Bundang Hospital, 82 Gumi-ro 173 Beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, 13620, Korea
| | - J W Kim
- Department of Dermatology, Seoul National University Bundang Hospital, 82 Gumi-ro 173 Beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, 13620, Korea
| | - M S Kim
- Department of Dermatology, Seoul National University Bundang Hospital, 82 Gumi-ro 173 Beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, 13620, Korea
| | - S Y Choi
- Department of Dermatology, Ilsan Paik Hospital, Inje University, 170, Juhwa-ro, Ilsanseo-gu, Goyang-si, Gyeonggi-do, Korea
| | - J I Na
- Department of Dermatology, Seoul National University Bundang Hospital, 82 Gumi-ro 173 Beon-gil, Bundang-gu, Seongnam-si, Gyeonggi-do, 13620, Korea
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MubarakAli D, MohamedSaalis J, Sathya R, Irfan N, Kim JW. An evidence of microalgal peptides to target spike protein of COVID-19: In silico approach. Microb Pathog 2021; 160:105189. [PMID: 34530072 PMCID: PMC8436434 DOI: 10.1016/j.micpath.2021.105189] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [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: 06/10/2021] [Revised: 09/08/2021] [Accepted: 09/10/2021] [Indexed: 12/23/2022]
Abstract
The outbreak of the novel coronavirus (COVID-19) has affected millions of lives and it is one of the deadliest viruses ever known and the effort to find a cure for COVID-19 has been very high. The purpose of the study was to investigate the anti-COVID effect from the peptides derived from microalgae. The peptides from microalgae exhibit antimicrobial, anti-allergic, anti-hypersensitive, anti-tumor and immune-modulatory properties. In the In silico study, 13 cyanobacterial specific peptides were retrieved based on the extensive literature survey and their structures were predicted using Discovery Studios Visualizer. The spike protein of the novel COVID19 was retrieved from PDB (6LU7) and further molecular docking was done with the peptides through CDOCKER. The five peptides were bound clearly to the spike protein (SP) and their inhibitory effect towards the SP was promising among 13 peptides were investigated. Interestingly, LDAVNR derived from S.maxima have excellent binding and interaction energy showed -113.456 kcal/mol and -71.0736 kcal/mol respectively to target SP of COVID. The further investigation required for the in vitro confirmation of anti-COVID from indigenous microalgal species for the possible remedy in the pandemic.
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Affiliation(s)
- Davoodbasha MubarakAli
- School of Life Sciences, B. S. Abdur Rahman Crescent Institute of Science and Technology, Chennai - 600048, India; Division of Bioengineering, Incheon National University, Republic of Korea.
| | - Jaulikar MohamedSaalis
- School of Life Sciences, B. S. Abdur Rahman Crescent Institute of Science and Technology, Chennai - 600048, India
| | - Raghunathan Sathya
- School of Life Sciences, B. S. Abdur Rahman Crescent Institute of Science and Technology, Chennai - 600048, India
| | - Navabshan Irfan
- Crescent School of Pharmacy, B.S Abdur Rahman Crescent Institute of Science and Technology, Chennai, 600048, India
| | - Jung-Wan Kim
- Division of Bioengineering, Incheon National University, Republic of Korea.
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Yang BR, Cha SH, Lee KE, Kim JW, Lee J, Shin KH. Effect of dipeptidyl peptidase IV inhibitors, thiazolidinedione, and sulfonylurea on osteoporosis in patients with type 2 diabetes: population-based cohort study. Osteoporos Int 2021; 32:1705-1712. [PMID: 33594487 DOI: 10.1007/s00198-020-05801-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 06/11/2020] [Accepted: 12/15/2020] [Indexed: 12/01/2022]
Abstract
UNLABELLED The population-based cohort study used the Korean National Health Insurance claims database to evaluate the effect of anti-diabetic drugs on osteoporosis. The use of DPP-IV inhibitors does not increase the risk of osteoporosis compared with the use of sulfonylureas in patients with type 2 diabetes mellitus, while a weak association was found between thiazolidinediones and increased risk of osteoporosis. PURPOSE The current study aimed to evaluate the effect of dipeptidyl peptidase IV inhibitors (DPP-IVi), thiazolidinedione (TZD), and sulfonylurea (SU) on osteoporosis in patients with type 2 diabetes. METHODS A population-based cohort study was conducted in the Republic of Korea using the Korean National Health Insurance claims database. Data from 2012 to 2017 for patients of 50-99 years of age who were prescribed DPP-IVi, TZD, or SU during 2013-2015 were extracted from the database. Based on pre-defined criteria, a total of 381,404 patients were analyzed after inverse probability of treatment weighting. The association between the study drugs and osteoporosis was estimated using Cox proportional hazards models. Data of 220,166 patients who were prescribed DPP-IVi, 18,630 who were prescribed TZD, and 142,608 patients who were prescribed SU were set. RESULTS In the multivariate-adjusted analysis, the hazard ratio (HR) of osteoporosis in the DPP-IVi group was not significantly different from that of the SU group (HR: 0.97; 95% confidence interval (CI) 0.94-1.00), whereas the HR of osteoporosis in the TZD group was higher (HR: 1.13; 95% CI 1.06-1.20). In the subgroup analysis, the HRs of osteoporosis were higher with pioglitazone (HR: 1.14; 95% CI 1.06-1.23) in the TZD group and with glibenclamides (HR: 1.39; 95% CI 1.09-1.77) in the SU group, whereas drugs with lower HR in the DPP-IVi group were saxagliptin (HR: 0.93; 95% CI 0.87-0.99) and sitagliptin (HR: 0.93; 95% CI 0.89-0.97). CONCLUSION DPP-IV inhibitors do not increase the risk of osteoporosis compared with sulfonylureas in patients with type 2 diabetes mellitus, while a weak association was found between thiazolidinediones and increased risk of osteoporosis.
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Affiliation(s)
- B R Yang
- College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea
| | - S H Cha
- Department of Statistics, College of Natural Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - K E Lee
- Department of Statistics, College of Natural Sciences, Kyungpook National University, Daegu, Republic of Korea
| | - J W Kim
- Department of Family Medicine, Daegu Health College Hospital, Daegu, Republic of Korea
| | - J Lee
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, Republic of Korea
| | - K-H Shin
- College of Pharmacy, Research Institute of Pharmaceutical Sciences, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu, 41566, Republic of Korea.
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MubarakAli D, Lee M, Manzoor MA, Lee SY, Kim JW. Production of Oligoalginate via Solution Plasma Process and Its Capability of Biological Growth Enhancement. Appl Biochem Biotechnol 2021; 193:4097-4112. [PMID: 34449041 DOI: 10.1007/s12010-021-03640-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2021] [Accepted: 08/10/2021] [Indexed: 11/25/2022]
Abstract
The objective of the study was to depolymerize alginate into short-length oligoalginates, adopting the simple solution plasma process (SPP) technique, for successful use in free radical scavenging and growth promotion in cell culture and agricultural practices. Alginate at various concentrations was depolymerized to oligoalginates using SPP by discharging for various times. The depolymerization into oligoalginates was proved by DNS, TLC, FT-IR, and HPAEC analyses and caused decrease in viscosity. Oligoalginates derived from 0.5% alginate (100 mg∙mL-1) showed the highest antioxidant activities in vitro. The oligoalginates enhanced growth of the human embryonic kidney (HEK293) cells to significant levels in a concentration-dependent manner without any extent of toxicity. The oligoalginates also promoted growth of lettuce. Thus, SPP is a powerful technique to break down alginate into oligoalginates that can be utilized as a free radical scavenger and as a growth promoter of animal cells and agricultural plants.
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Affiliation(s)
- Davoodbasha MubarakAli
- School of Life Sciences, B.S.Abdur Rahman Crescent Institute of Science and Technology, Chennai, India
- Division of Bioengineering, Incheon National University, Incheon, Republic of Korea
- Center for Surface Technology and Applications (CeSTA), Department of Material Engineering, Korea Aerospace University, Goyang, Republic of Korea
| | - Minho Lee
- Division of Bioengineering, Incheon National University, Incheon, Republic of Korea
| | | | - Sang-Yul Lee
- Center for Surface Technology and Applications (CeSTA), Department of Material Engineering, Korea Aerospace University, Goyang, Republic of Korea.
| | - Jung-Wan Kim
- Division of Bioengineering, Incheon National University, Incheon, Republic of Korea.
- Center for Surface Technology and Applications (CeSTA), Department of Material Engineering, Korea Aerospace University, Goyang, Republic of Korea.
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24
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Yang JH, Cho SI, Kim DH, Yoon JY, Moon J, Kim JW, Choi S, Suh DH. Pilot study of fractional microneedling radiofrequency for hidradenitis suppurativa assessed by clinical response and histology. Clin Exp Dermatol 2021; 47:335-342. [PMID: 34431555 DOI: 10.1111/ced.14905] [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] [Accepted: 08/19/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Hidradenitis suppurativa (HS) is a devastating chronic inflammatory skin disease with frequent recurrences. Various systemic treatments and procedures have been used but the efficacy of fractional microneedling radiofrequency (FMR) has not been reported. AIM To evaluate the clinical and histological efficacy of FMR in the treatment of HS lesions. METHODS An 8-week, prospective, split-body, unblinded study was conducted, which enrolled 10 adult patients with mild to moderate HS to receive 3 sessions of FMR treatment biweekly. HS severity was assessed using the number and type of lesions, HS Physician Global Assessment (HS-PGA) and the modified Sartorius score (mSS). Skin biopsies were performed on participants to assess change in inflammation before and after FMR. RESULTS Severity of HS was significantly reduced on the FMR-treated side of the body, but not on the control side. Inflammatory HS lesions were significantly reduced after 4 weeks, while HS-PGA and mSS were significantly decreased after 6 weeks. Immunohistochemistry staining showed decreased expression of inflammatory markers including neutrophil elastases, interleukin (IL)-8 and IL-17, tumour necrosis factor-α, transforming growth factor-β1 and matrix metalloproteinases. CONCLUSION FMR may be a viable treatment option for mild to moderate HS.
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Affiliation(s)
- J H Yang
- Department of Dermatology, Seoul National University College of Medicine, Seoul, South Korea.,Acne, Rosacea, Seborrheic Dermatitis and Hidradenitis Suppurativa Research Laboratory, Seoul National University Hospital, Seoul, South Korea
| | - S I Cho
- Department of Dermatology, Seoul National University College of Medicine, Seoul, South Korea
| | - D H Kim
- Department of Dermatology, Seoul National University College of Medicine, Seoul, South Korea
| | - J Y Yoon
- Acne, Rosacea, Seborrheic Dermatitis and Hidradenitis Suppurativa Research Laboratory, Seoul National University Hospital, Seoul, South Korea
| | - J Moon
- Reone Skin Clinic, Seoul, South Korea
| | - J W Kim
- Department of Dermatology, Seoul National University College of Medicine, Seoul, South Korea
| | - S Choi
- Department of Dermatology, Seoul National University College of Medicine, Seoul, South Korea
| | - D H Suh
- Department of Dermatology, Seoul National University College of Medicine, Seoul, South Korea.,Acne, Rosacea, Seborrheic Dermatitis and Hidradenitis Suppurativa Research Laboratory, Seoul National University Hospital, Seoul, South Korea
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25
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Jung IJ, Choi EJ, Lee BG, Kim JW. Population-based, three-dimensional analysis of age- and sex-related femur shaft geometry differences. Osteoporos Int 2021; 32:1631-1638. [PMID: 33501569 DOI: 10.1007/s00198-021-05841-6] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 01/11/2021] [Indexed: 10/22/2022]
Abstract
UNLABELLED This study deals with differences of femoral geometric focus on the bowing and width. Analysis using three-dimensional skeletonization showed increase of femoral bowing and femur width over life (more in women), and widening of the medullary canal only in women after 50 years old, not in men. INTRODUCTION The changes in femur geometry that occur with aging and lead to fragility or insufficiency fracture remain unclear. The role of the lower limb geometry, including the femur and femoral bowing, has become a point of discussion, especially in atypical femur fracture. This study aimed to analyze femur shaft geometry using three-dimensional skeletonization. METHODS We acquired computed tomography images of both femurs obtained. A total of 1400 age- and sex-stratified participants were enrolled and were divided into subgroups according to age (by decade) and sex. The computed tomography images were used to produce 3-dimensional samplings of anatomical elements of the human femur using reconstruction and parametrization from these datasets. The process of skeletonization was conducted to obtain compact representation of the femur. With the skeletonization, we were able to compare all parameters according to age and sex. RESULTS The femur length was 424.4 ± 28.6 mm and was longer in men (P < 0.001). The minimum diameter of the medullary canal was 8.9 ± 2.0 mm. The radius of curvature (ROC) was 906.9 ± 193.3 mm. Men had a larger femur length, femur outer diameter, and the narrowest medullary diameter (P < 0.001, respectively). Women had significantly smaller ROC (P < 0.001). ROC decreased by 19.4% in men and 23.6% in women between the ages of 20 to 89 years. Femur width increased over life by 11.4% in men and 24.5% in women. Between the ages of 50 and 89 years, the medullary canal appears to have increased by 32.7% in women. CONCLUSION This geometry analysis demonstrated that femoral bowing and femoral width increased related to aging, and that the medullary canal widened after the age of 50 years in women. This cross-sectional study revealed important age- and sex-related differences in femur shaft geometry that occur with aging.
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Affiliation(s)
- I J Jung
- University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - E J Choi
- Department of Orthopaedics, Asan Medical Center, Seoul, Republic of Korea
| | - B G Lee
- Division of Computer Engineering, Dongseo University, Busan, Republic of Korea
| | - J W Kim
- Department of Orthopaedics, Asan Medical Center, Seoul, Republic of Korea.
- Department of Orthopedic Surgery, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Republic of Korea.
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Kim HJ, Cho H, Park M, Kim JW, Ahn SJ, Lyoo CH, Suh SH, Ryu YH. MRI-Visible Perivascular Spaces in the Centrum Semiovale Are Associated with Brain Amyloid Deposition in Patients with Alzheimer Disease-Related Cognitive Impairment. AJNR Am J Neuroradiol 2021; 42:1231-1238. [PMID: 33985952 DOI: 10.3174/ajnr.a7155] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 01/21/2021] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE The association of perivascular spaces in the centrum semiovale with amyloid accumulation among patients with Alzheimer disease-related cognitive impairment is unknown. We evaluated this association in patients with Alzheimer disease-related cognitive impairment and β-amyloid deposition, assessed with [18F] florbetaben PET/CT. MATERIALS AND METHODS MR imaging and [18F] florbetaben PET/CT images of 144 patients with Alzheimer disease-related cognitive impairment were retrospectively evaluated. MR imaging-visible perivascular spaces were rated on a 4-point visual scale: a score of ≥3 or <3 indicated a high or low degree of MR imaging-visible perivascular spaces, respectively. Amyloid deposition was evaluated using the brain β-amyloid plaque load scoring system. RESULTS Compared with patients negative for β-amyloid, those positive for it were older and more likely to have lower cognitive function, a diagnosis of Alzheimer disease, white matter hyperintensity, the Apolipoprotein E ε4 allele, and a high degree of MR imaging-visible perivascular spaces in the centrum semiovale. Multivariable analysis, adjusted for age and Apolipoprotein E status, revealed that a high degree of MR imaging-visible perivascular spaces in the centrum semiovale was independently associated with β-amyloid positivity (odds ratio, 2.307; 95% CI, 1.036-5.136; P = .041). CONCLUSIONS A high degree of MR imaging-visible perivascular spaces in the centrum semiovale independently predicted β-amyloid positivity in patients with Alzheimer disease-related cognitive impairment. Thus, MR imaging-visible perivascular spaces in the centrum semiovale are associated with amyloid pathology of the brain and could be an indirect imaging marker of amyloid burden in patients with Alzheimer disease-related cognitive impairment.
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Affiliation(s)
- H J Kim
- From the Department of Nuclear Medicine (H.J.K., Y.H.R.)
- Department of Nuclear Medicine (H.J.K.), Yongin Severance Hospital, Yonsei University College of Medicine, Yongin-si, South Korea
| | | | - M Park
- Radiology (M.P., J.W.K., S.J.A., S.H.S.), Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - J W Kim
- Radiology (M.P., J.W.K., S.J.A., S.H.S.), Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - S J Ahn
- Radiology (M.P., J.W.K., S.J.A., S.H.S.), Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | | | - S H Suh
- Radiology (M.P., J.W.K., S.J.A., S.H.S.), Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - Y H Ryu
- From the Department of Nuclear Medicine (H.J.K., Y.H.R.)
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27
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Park HS, Kang B, Chon HJ, Im HS, Lee CK, Kim I, Kang MJ, Hwang JE, Bae WK, Cheon J, Park JO, Hong JY, Kang JH, Kim JH, Lim SH, Kim JW, Kim JW, Yoo C, Choi HJ. Liposomal irinotecan plus fluorouracil/leucovorin versus FOLFIRINOX as the second-line chemotherapy for patients with metastatic pancreatic cancer: a multicenter retrospective study of the Korean Cancer Study Group (KCSG). ESMO Open 2021; 6:100049. [PMID: 33578192 PMCID: PMC7878976 DOI: 10.1016/j.esmoop.2021.100049] [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: 11/23/2020] [Revised: 12/31/2020] [Accepted: 01/03/2021] [Indexed: 12/16/2022] Open
Abstract
Background There is no clear consensus on the recommended second-line treatment for patients with metastatic pancreatic cancer who have disease progression following gemcitabine-based therapy. We retrospectively evaluated the clinical outcomes of liposomal irinotecan (nal-IRI) plus fluorouracil/leucovorin (FL) and FOLFIRINOX (fluorouracil, leucovorin, irinotecan, and oxaliplatin) in patients who had failed on the first-line gemcitabine-based therapy. Patients and methods From January 2015 to August 2019, 378 patients with MPC who had received nal-IRI/FL (n = 104) or FOLFIRINOX (n = 274) as second-line treatment across 11 institutions were included in this retrospective study. Results There were no significant differences in baseline characteristics between groups, except age and first-line regimens. With a median follow-up of 6 months, the median progression-free survival (PFS) was 3.7 months with nal-IRI/FL versus 4.6 months with FOLFIRINOX (P = 0.44). Median overall survival (OS) was 7.7 months with nal-IRI/FL versus 9.7 months with FOLFRINOX (P = 0.13). There was no significant difference in PFS and OS between the two regimens in the univariate and multivariate analyses. The subgroup analysis revealed that younger age (<70 years) was associated with better OS with FOLFIRINOX. In contrast, older age (≥70 years) was associated with better survival outcomes with nal-IRI/FL. Adverse events were manageable with both regimens; however, the incidence of grade 3 or higher neutropenia and peripheral neuropathy was higher in patients treated with FOLFIRINOX than with nal-IRI/FL. Conclusions Second-line nal-IRI/FL and FOLFIRINOX showed similar effectiveness outcomes after progression following first-line gemcitabine-based therapy. Age could be the determining factor for choosing the appropriate second-line therapy. This multicenter retrospective study investigated nal-IRI/FL and FOLFIRINOX outcomes after gemcitabine-based therapy. We found no significant differences in outcome between nal-IRI/FL and FOLFIRINOX treatment. Both regimens were well tolerated; however, neutropenia and peripheral neuropathy were more frequent with FOLFIRINOX. Age (cut-off, 70 years) showed differential efficacy between chemotherapy regimens.
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Affiliation(s)
- H S Park
- Division of Medical Oncology, Department of Internal Medicine, St. Vincent's Hospital, The Catholic University of Korea, Seoul, Korea
| | - B Kang
- Medical Oncology, CHA Bundang Medical Center, CHA University, Seongnam, Korea
| | - H J Chon
- Medical Oncology, CHA Bundang Medical Center, CHA University, Seongnam, Korea
| | - H-S Im
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - C-K Lee
- Division of Medical Oncology, Department of Internal Medicine, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea
| | - I Kim
- Department of Internal Medicine, Inje University Haeundae Paik Hospital, Inje University College of Medicine, Busan, Korea
| | - M J Kang
- Department of Internal Medicine, Inje University Haeundae Paik Hospital, Inje University College of Medicine, Busan, Korea
| | - J E Hwang
- Division of Hematology-Oncology, Department of Internal Medicine, Chonnam National University Medical School and Hwasun Hospital, Gwangju, Korea
| | - W K Bae
- Division of Hematology-Oncology, Department of Internal Medicine, Chonnam National University Medical School and Hwasun Hospital, Gwangju, Korea
| | - J Cheon
- Department of Hematology and Oncology, Ulsan University Hospital, Ulsan University College of Medicine, Ulsan, Korea
| | - J O Park
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University College of Medicine, Seoul, Korea
| | - J Y Hong
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University College of Medicine, Seoul, Korea
| | - J H Kang
- Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Korea
| | - J H Kim
- Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Korea
| | - S H Lim
- Division of Hematology-Oncology, Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, Bucheon, Korea
| | - J W Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - J-W Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
| | - C Yoo
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
| | - H J Choi
- Division of Medical Oncology, Department of Internal Medicine, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea.
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Alhazemi AA, Park S, Shin JH, Cho YC, Kim Y, Lee J, Kim PH, Kim JW, Chu HH. Safety and efficacy of transarterial embolisation for treatment of dorsal pancreatic artery haemorrhage. Clin Radiol 2020; 76:314.e9-314.e15. [PMID: 33334554 DOI: 10.1016/j.crad.2020.11.111] [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: 06/04/2020] [Accepted: 11/12/2020] [Indexed: 11/28/2022]
Abstract
AIM To evaluate the safety and efficacy of transarterial embolisation (TAE) of dorsal pancreatic artery (DPA) haemorrhage. MATERIALS AND METHODS Nineteen consecutive patients (M:F = 16:3, mean age 59.6 years) who underwent TAE of DPA in three tertiary medical centres between January 2001 to January 2020 were reviewed retrospectively. Angiographic features and the technical and clinical outcomes of TAE were analysed. RESULTS The clinical presentations were a bloody drain from the Jackson-Pratt drainage tube (n=8), melaena (n=7), abdominal pain (n=4), and haematochezia (n=3). Angiographic findings included pseudoaneurysm (n=14), contrast media extravasation (n=4), or abrupt cut-off of the arterial branch (n=1). The NBCA (N-butyl-cyanoacrylate; n=4), microcoils (n=4), and a combination of these agents (n=7) were used as embolic agents. The most common origin of the DPA in the present study cohort was the splenic artery (n=7), followed by the coeliac trunk (n=4), common hepatic artery (n=4), and superior mesenteric artery (n=4). Technical and clinical success rates were 100% and 84.2% (16/19), respectively. Of the three clinically unsuccessful cases, two patients were revealed to have newly developed bleeding from another artery. The other patient expired 1 day after the TAE procedure due to a progression of hepatic failure. In one patient, an asymptomatic non-target embolisation occurred in the right posterior tibial artery as a procedure-related complication. No major complications were observed. CONCLUSION TAE is safe and effective for the management of bleeding from the DPA. It is important to be aware of the DPA as a potential bleeding source, including the relevant clinical characteristics.
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Affiliation(s)
- A A Alhazemi
- Department of Radiology, King Fahd Central Hospital, Jazan 45196, Saudi Arabia
| | - S Park
- Department of Radiology, Gil Medical Centre, Gachon University College of Medicine, Incheon, Republic of Korea
| | - J H Shin
- Department of Radiology and Research Institute of Radiology, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea.
| | - Y C Cho
- Department of Radiology and Research Institute of Radiology, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Y Kim
- Department of Radiology Chungbuk National University Hospital, Cheongju, Republic of Korea
| | - J Lee
- Department of Radiology Chungbuk National University Hospital, Cheongju, Republic of Korea
| | - P H Kim
- Department of Radiology and Research Institute of Radiology, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - J W Kim
- Department of Radiology and Research Institute of Radiology, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - H H Chu
- Department of Radiology and Research Institute of Radiology, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Republic of Korea
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Han HJ, Kim JW, Jeong JH. Intramedullary pneumorrhachis following a cervical epidural steroid injection. Neurochirurgie 2020; 67:189-192. [PMID: 33049286 DOI: 10.1016/j.neuchi.2020.08.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Revised: 06/29/2020] [Accepted: 08/27/2020] [Indexed: 10/23/2022]
Abstract
Pneumorrhachis (PR) is a rare radiological condition characterized by the presence of intraspinal air. PR is commonly classified as spontaneous (nontraumatic), traumatic, or iatrogenic, and iatrogenic PR is the most common and often occurs secondary to invasive procedures such as epidural anesthesia, lumbar puncture, or spinal surgery. PR is usually asymptomatic, but it can produce symptoms associated with its underlying pathology. Here, we report a rare case of intramedullary cervical PR following a cervical epidural steroid injection (ESI) and include pertinent discussion.
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Affiliation(s)
- H J Han
- Department of Neurosurgery, Dongguk University Gyeongju Hospital, Dongguk University College of Medicine, Dongdae-ro 87, 38067 Gyeongju, Republic of Korea.
| | - J W Kim
- Department of Neurosurgery, Dongguk University Gyeongju Hospital, Dongguk University College of Medicine, Dongdae-ro 87, 38067 Gyeongju, Republic of Korea.
| | - J H Jeong
- Department of Neurosurgery, Dongguk University Gyeongju Hospital, Dongguk University College of Medicine, Dongdae-ro 87, 38067 Gyeongju, Republic of Korea.
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Abstract
Autosomal dominant hypocalcified amelogenesis imperfecta (ADHCAI; OMIM #130900) is a genetic disorder exhibiting severe hardness defects and reduced fracture toughness of dental enamel. While the condition is nonsyndromic, it can be associated with other craniofacial anomalies, such as malocclusions and delayed or failed tooth eruption. Truncation mutations in FAM83H (OMIM *611927) are hitherto the sole cause of ADHCAI. With human genetic studies, Fam83h knockout and mutation-knock-in mouse models indicated that FAM83H does not serve a critical physiologic function during enamel formation and suggested a neomorphic mutation mechanism causing ADHCAI. The function of FAM83H remains obscure. FAM83H has been shown to interact with various isoforms of casein kinase 1 (CK1) and keratins and to mediate organization of keratin cytoskeletons and desmosomes. By considering FAM83H a scaffold protein to anchor CK1s, further molecular characterization of the protein could gain insight into its functions. In this study, we characterized 9 kindreds with ADHCAI and identified 3 novel FAM83H truncation mutations: p.His437*, p.Gln459*, and p.Glu610*. Some affected individuals exhibited hypoplastic phenotypes, in addition to the characteristic hypocalcification enamel defects, which have never been well documented. Failed eruption of canines or second molars in affected persons was observed in 4 of the families. The p.Glu610* mutation was located in a gap area (amino acids 470 to 625) within the zone of previously reported pathogenic variants (amino acids 287 to 694). In vitro pull-down studies with overexpressed FAM83H proteins in HEK293 cells demonstrated an interaction between FAM83H and SEC16A, a protein component of the COP II complex at endoplasmic reticulum exit sites. The interaction was mediated by the middle part (amino acids 287 to 657) of mouse FAM83H protein. Results of this study significantly extended the phenotypic and genotypic spectrums of FAM83H-associated ADHCAI and suggested a role for FAM83H in endoplasmic reticulum-to-Golgi vesicle trafficking and protein secretion (dbGaP phs001491.v1.p1).
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Affiliation(s)
- S K Wang
- Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, MI, USA.,Department of Dentistry, School of Dentistry, National Taiwan University, Jhongjheng District, Taipei City, Taiwan
| | - H Zhang
- Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
| | - C Y Hu
- Department of Prosthodontics, National Taiwan University Hospital, Jhongjheng District, Taipei City, Taiwan
| | - J F Liu
- Division of Pediatric Dentistry, Department of Stomatology, Taichung Veterans General Hospital, Xitun District, Taichung City, Taiwan
| | - S Chadha
- Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
| | - J W Kim
- Department of Pediatric Dentistry and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Republic of Korea.,Department of Molecular Genetics and Dental Research Institute, School of Dentistry, Seoul National University, Seoul, Republic of Korea
| | - J P Simmer
- Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
| | - J C C Hu
- Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, Ann Arbor, MI, USA
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Wenger DS, Triplette M, Shahrir S, Akgun KM, Wongtrakool C, Brown ST, Kim JW, Soo Hoo GW, Rodriguez-Barradas MC, Huang L, Feemster LC, Zifodya J, Crothers K. Associations of marijuana with markers of chronic lung disease in people living with HIV. HIV Med 2020; 22:92-101. [PMID: 33022830 DOI: 10.1111/hiv.12966] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 08/21/2020] [Accepted: 08/26/2020] [Indexed: 12/18/2022]
Abstract
OBJECTIVES The relationship between marijuana use and markers of chronic lung disease in people living with HIV (PLWH) is poorly understood. METHODS We performed a cross-sectional analysis of the Examinations of HIV-Associated Lung Emphysema (EXHALE) study, including 162 HIV-positive patients and 138 participants without HIV. We modelled marijuana exposure as: (i) current daily or weekly marijuana smoking vs. monthly or less often; or (ii) cumulative marijuana smoking (joint-years). Linear and logistic regression estimated associations between marijuana exposure and markers of lung disease, adjusted for tobacco smoking and other factors. RESULTS In PLWH, current daily or weekly marijuana use was associated with a larger forced vital capacity (FVC), larger total lung capacity and increased odds of radiographic emphysema compared with marijuana non-smokers in adjusted models; these associations were not statistically significant in participants without HIV. Marijuana joint-years were associated with higher forced expiratory volume in 1 s and FVC in PLWH but not with emphysema. CONCLUSIONS In PLWH, marijuana smoking was associated with higher lung volumes and potentially with radiographic emphysema. No consistently negative associations were observed between marijuana and measures of chronic lung health.
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Affiliation(s)
- D S Wenger
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Washington, Seattle, WA, USA
| | - M Triplette
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Washington, Seattle, WA, USA.,Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - S Shahrir
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Washington, Seattle, WA, USA
| | - K M Akgun
- Department of Internal Medicine, Veterans Affairs (VA) Connecticut Healthcare System and Yale University School of Medicine, New Haven, CT, USA
| | - C Wongtrakool
- Atlanta VA Medical Center and Department of Medicine, Emory University School of Medicine, Atlanta, GA, USA
| | - S T Brown
- Department of Medicine, James J. Peters VA Medical Center, Bronx, NY, USA.,Department of Medicine, Icahn School of Medicine at Mt. Sinai, New York, NY, USA
| | - J W Kim
- Department of Medicine, James J. Peters VA Medical Center, Bronx, NY, USA
| | - G W Soo Hoo
- VA Greater Los Angeles Healthcare System and Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - M C Rodriguez-Barradas
- Michael E. DeBakey VA Medical Center and Department of Medicine, Baylor College of Medicine, Houston, TX, USA
| | - L Huang
- Center for AIDS Research, University of California at San Francisco, San Francisco, CA, USA
| | - L C Feemster
- VA Puget Sound Healthcare System, University of Washington, Seattle, WA, USA
| | - J Zifodya
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Washington, Seattle, WA, USA
| | - K Crothers
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Washington, Seattle, WA, USA.,VA Puget Sound Healthcare System, University of Washington, Seattle, WA, USA
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Abstract
In older adults with subjective memory complaints (SMCs), featuring a decline in memory but not exhibiting problems during medical examinations and objective memory tests, the weak links between nodes evident in the word retrieval process can be a primary factor for predicting mild cognitive impairment and dementia. This study examined the frequency of the “Tip-of-the-Tongue” (ToT) phenomenon according to age and subjective memory complaints of older adults, and identified differences in the resolution method using sequential cues. A celebrity naming task was performed on older adults (aged 50 to 79) with SMCs (n = 30) and without SMCs (n = 30), comparing the frequency of the ToT phenomenon and in resolution methods. We found that, even if our subjects with SMCs obtained normal results in the objective neuropsychology test, they experienced a significantly higher frequency of the ToT phenomenon than those without SMCs. In addition, subjects with SMCs showed a significantly lower rate of resolution, both spontaneous and following a syllabic cue, compared to those without SMCs. SMCs can be a very early marker of degenerative diseases causing cognitive dysfunction, and thus the selection of appropriate tools for early detection of SMCs is important. The proper naming task may sensitively detect subclinical symptoms of SMCs in subjects who are not classified as patients with cognitive impairments on general neuropsychological test. In addition, this task can identify weak connections between semantic and phonological nodes due to changes in the neural region of older adults with SMCs.
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Affiliation(s)
- JungWan Kim
- Department of Speech and Language Pathology, College of Rehabilitation Sciences, Daegu University, Gyeongsan, Republic of Korea
| | - Minyoung Kim
- Division of Speech Pathology, Lee Rehabilitation Clinic, Incheon, Republic of Korea
| | - Ji Hye Yoon
- Division of Speech Pathology and Audiology, College of Natural Sciences, Hallym University, Chuncheon, Republic of Korea
- Research Institute of Audiology and Speech Pathology, Hallym University, Chuncheon, Republic of Korea
- * E-mail:
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Park JS, Kim TH, Oh YJ, Park EJ, Kim JW, Jeong H. Investigation of photodarkening in tandem-pumped Yb-doped fibers. Opt Express 2020; 28:27316-27323. [PMID: 32988028 DOI: 10.1364/oe.400094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 08/25/2020] [Indexed: 06/11/2023]
Abstract
Investigation of photodarkening (PD) in Yb-doped fibers tandem-pumped at 1018 nm is reported. For a homemade Yb-doped aluminosilicate double-clad fiber (YADF), the transmitted power of a 633 nm probe beam is reduced by 2.4% over 2 hours for the tandem pumping configuration at 1018 nm, which is significantly smaller than 33.3% for a laser diode (LD) pumping at 976 nm. A tandem-pumped Yb fiber amplifier also shows a much smaller decrease in the amplified output power over time than a LD-pumped Yb fiber amplifier. Based on fluorescence spectra of the YADF, we can not only associate PD of the YADF to intrinsic oxygen deficiency centers or Tm3+ impurities but also confirm the impact of the excited Yb3+ ion density on PD. The benefits of the tandem pumping in a high-power Yb fiber laser system will be discussed.
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Zang Y, Song JH, Oh SH, Kim JW, Lee MN, Piao X, Yang JW, Kim OS, Kim TS, Kim SH, Koh JT. Targeting NLRP3 Inflammasome Reduces Age-Related Experimental Alveolar Bone Loss. J Dent Res 2020; 99:1287-1295. [PMID: 32531176 DOI: 10.1177/0022034520933533] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [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] Open
Abstract
The cause of chronic inflammatory periodontitis, which leads to the destruction of periodontal ligament and alveolar bone, is multifactorial. An increasing number of studies have shown the clinical significance of NLRP3-mediated low-grade inflammation in degenerative disorders, but its causal linkage to age-related periodontitis has not yet been elucidated. In this study, we investigated the involvement of the NLRP3 inflammasome and the therapeutic potential of NLRP3 inhibition in age-related alveolar bone loss by using in vivo and in vitro models. The poor quality of alveolar bones in aged mice was correlated with caspase-1 activation by macrophages and elevated levels of IL-1β, which are mainly regulated by the NLRP3 inflammasome, in periodontal ligament and serum, respectively. Aged mice lacking Nlrp3 showed better bone mass than age-matched wild-type mice via a way that affects bone resorption rather than bone formation. In line with this finding, treatment with MCC950, a potent inhibitor of the NLRP3 inflammasome, significantly suppressed alveolar bone loss with reduced caspase-1 activation in aged mice but not in young mice. In addition, our in vitro studies showed that the addition of IL-1β encourages RANKL-induced osteoclastogenesis from bone marrow-derived macrophages and that treatment with MCC950 significantly suppresses osteoclastic differentiation directly, irrelevant to the inhibition of IL-1β production. Our results suggest that the NLRP3 inflammasome is a critical mediator in age-related alveolar bone loss and that targeting the NLRP3 inflammasome could be a novel option for controlling periodontal degenerative changes with age.
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Affiliation(s)
- Y Zang
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea.,Hard-tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - J H Song
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea.,Hard-tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - S H Oh
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea.,Hard-tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - J W Kim
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea.,Hard-tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - M N Lee
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea.,Hard-tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - X Piao
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea.,Hard-tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - J W Yang
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea.,Hard-tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - O S Kim
- Hard-tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea.,Department of Periodontology, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - T S Kim
- Department of Life Sciences, College of Life Sciences and Biotechnology, Korea University, Seoul, Republic of Korea
| | - S H Kim
- Hard-tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea.,Department of Oral Anatomy, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - J T Koh
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea.,Hard-tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju, Republic of Korea
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Kim CH, Kim JW. Letter to the editor about the article "Different surgical outcomes in a patient with bilateral atypical femoral fracture related to bisphosphonate use with or without teriparatide treatment". Osteoporos Int 2020; 31:1177. [PMID: 32144475 DOI: 10.1007/s00198-020-05354-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 02/17/2020] [Indexed: 10/24/2022]
Affiliation(s)
- C-H Kim
- Department of Orthopedic Surgery, Gachon University Gil Medical Center, 21, Namdong-daero 774 beon-gil, Namdong-gu, Incheon, 21565, Republic of Korea
| | - J W Kim
- Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan, College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Republic of Korea.
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Kim OH, Booth CJ, Choi HS, Lee J, Kang J, Hur J, Jung WJ, Jung YS, Choi HJ, Kim H, Auh JH, Kim JW, Cha JY, Lee YJ, Lee CS, Choi C, Jung YJ, Yang JY, Im SS, Lee DH, Cho SW, Kim YB, Park KS, Park YJ, Oh BC. High-phytate/low-calcium diet is a risk factor for crystal nephropathies, renal phosphate wasting, and bone loss. eLife 2020; 9:52709. [PMID: 32271147 PMCID: PMC7145417 DOI: 10.7554/elife.52709] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Accepted: 03/22/2020] [Indexed: 12/13/2022] Open
Abstract
Phosphate overload contributes to mineral bone disorders that are associated with crystal nephropathies. Phytate, the major form of phosphorus in plant seeds, is known as an indigestible and of negligible nutritional value in humans. However, the mechanism and adverse effects of high-phytate intake on Ca2+ and phosphate absorption and homeostasis are unknown. Here, we show that excessive intake of phytate along with a low-Ca2+ diet fed to rats contributed to the development of crystal nephropathies, renal phosphate wasting, and bone loss through tubular dysfunction secondary to dysregulation of intestinal calcium and phosphate absorption. Moreover, Ca2+ supplementation alleviated the detrimental effects of excess dietary phytate on bone and kidney through excretion of undigested Ca2+-phytate, which prevented a vicious cycle of intestinal phosphate overload and renal phosphate wasting while improving intestinal Ca2+ bioavailability. Thus, we demonstrate that phytate is digestible without a high-Ca2+ diet and is a risk factor for phosphate overloading and for the development of crystal nephropathies and bone disease.
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Affiliation(s)
- Ok-Hee Kim
- Department of Physiology, Lee Gil Ya Cancer and Diabetes Institute, Gachon University College of Medicine, Incheon, Republic of Korea
| | - Carmen J Booth
- Department of Comparative Medicine, Yale University School of Medicine, New Haven, United States
| | - Han Seok Choi
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Dongguk University Ilsan Hospital, Goyang, Republic of Korea
| | - Jinwook Lee
- Department of Physiology, Lee Gil Ya Cancer and Diabetes Institute, Gachon University College of Medicine, Incheon, Republic of Korea
| | - Jinku Kang
- Department of Physiology, Lee Gil Ya Cancer and Diabetes Institute, Gachon University College of Medicine, Incheon, Republic of Korea
| | - June Hur
- Department of Physiology, Lee Gil Ya Cancer and Diabetes Institute, Gachon University College of Medicine, Incheon, Republic of Korea
| | - Woo Jin Jung
- Department of Physiology, Lee Gil Ya Cancer and Diabetes Institute, Gachon University College of Medicine, Incheon, Republic of Korea
| | - Yun-Shin Jung
- Department of Physiology, Lee Gil Ya Cancer and Diabetes Institute, Gachon University College of Medicine, Incheon, Republic of Korea
| | - Hyung Jin Choi
- Department of Anatomy, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Hyeonjin Kim
- Department of Radiology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Joong-Hyuck Auh
- Department of Food Science and Technology, Chung-Ang University, Ansung, Republic of Korea
| | - Jung-Wan Kim
- Department of Biology, University of Incheon, Incheon, Republic of Korea
| | - Ji-Young Cha
- Department of Biochemistry, Lee Gil Ya Cancer and Diabetes Institute Gachon University College of Medicine, Incheon, Republic of Korea
| | - Young Jae Lee
- Department of Biochemistry, Lee Gil Ya Cancer and Diabetes Institute Gachon University College of Medicine, Incheon, Republic of Korea
| | - Cheol Soon Lee
- Medical Health Research Center, Korea University Anam Hospital, Seoul, Republic of Korea
| | - Cheolsoo Choi
- Department of Internal Medicine, Gachon University Gil Medical Center, Incheon, Republic of Korea
| | - Yun Jae Jung
- Department of Mirobiolgy, Lee Gil Ya Cancer and Diabetes Institute, Gachon University College of Medicine, Incheon, Republic of Korea
| | - Jun-Young Yang
- Department of Toxicological Evaluation and Research, Ministry of Food and Drug Safety, Cheongju-si, Republic of Korea
| | - Seung-Soon Im
- Department of Physiology, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - Dae Ho Lee
- Department of Internal Medicine, Gachon University Gil Medical Center, Incheon, Republic of Korea
| | - Sun Wook Cho
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Young-Bum Kim
- Division of Endocrinology, Diabetes, and Metabolism, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, United States
| | - Kyong Soo Park
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Young Joo Park
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Byung-Chul Oh
- Department of Physiology, Lee Gil Ya Cancer and Diabetes Institute, Gachon University College of Medicine, Incheon, Republic of Korea
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Park S, Jeong B, Shin JH, Kim JH, Kim JW, Gwon DI, Ko GY, Chen CS. Interventional treatment of arterial injury during blind central venous catheterisation in the upper thorax: experience from two centres. Clin Radiol 2019; 75:158.e1-158.e7. [PMID: 31711638 DOI: 10.1016/j.crad.2019.10.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 10/03/2019] [Indexed: 12/01/2022]
Abstract
AIM To evaluate the safety and clinical efficacy of interventional treatment for arterial injury during blind, central venous catheterisation in the upper thorax at two tertiary medical centres. MATERIALS AND METHODS Eighteen consecutive patients (37-81 years; M:F=8:10) who underwent interventional treatment for the arterial injuries that occurred during central venous catheterisation without any imaging guidance between November 2007 and December 2018 were included. Clinical data, angiographic findings, detailed interventional procedures, and technical and clinical outcomes were analysed retrospectively. RESULTS Arterial injury sites were the subclavian artery/branches (n=12), axillary artery/branches (n=2), and common carotid artery (n=4). The target vein was not correlated with the corresponding artery/branches in eight patients (44.4%); internal jugular vein to subclavian artery branches. Angiographic findings were pseudoaneurysm (66.7%, 12/18), contrast medium extravasation (22.2%, 4/18), or both (11.1%, n=2). A stent graft was inserted for the main trunk injuries in nine patients, with (n=2) or without (n=7) prior arterial branch embolisation to prevent potential endoleak, while embolisation for the arterial branch injuries was performed in nine patients. Direct percutaneous access with thrombin injection to the pseudoaneurysm or residual arteriovenous fistula was utilised in two. The technical and clinical success rate was 94.4% (17/18) each. There were no procedure-related complications. In one patient without immediate clinical success, there was a persistent pseudoaneurysm after stent graft placement, which was treated with in-stent balloon dilation. CONCLUSION Interventional treatment serves as a safe and effective treatment modality for inadvertent arterial injury related to blind, central venous access catheterisation in the upper thorax.
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Affiliation(s)
- S Park
- Department of Radiology, Gachon University Gil Medical Centre, 21, Namdong-daero 774beon-gil, Namdong-gu, Incheon, South Korea
| | - B Jeong
- Department of Radiology and Research Institute of Radiology, Asan Medical Centre, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, South Korea
| | - J H Shin
- Department of Radiology and Research Institute of Radiology, Asan Medical Centre, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, South Korea.
| | - J H Kim
- Department of Radiology, Gachon University Gil Medical Centre, 21, Namdong-daero 774beon-gil, Namdong-gu, Incheon, South Korea
| | - J W Kim
- Department of Radiology and Research Institute of Radiology, Asan Medical Centre, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, South Korea
| | - D I Gwon
- Department of Radiology and Research Institute of Radiology, Asan Medical Centre, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, South Korea
| | - G-Y Ko
- Department of Radiology and Research Institute of Radiology, Asan Medical Centre, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, South Korea
| | - C S Chen
- Department of Radiology, The Affiliated Cancer Hospital of Zhengzhou University, 1 Jianshe E Rd, Erqi Qu, Zhengzhou Shi, Henan Sheng, PR China
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Kang YK, Ryu MH, Park SH, Kim JG, Kim JW, Cho SH, Park YI, Park SR, Rha SY, Kang MJ, Cho JY, Kang SY, Roh SY, Ryoo BY, Nam BH, Jo YW, Yoon KE, Oh SC. Efficacy and safety findings from DREAM: a phase III study of DHP107 (oral paclitaxel) versus i.v. paclitaxel in patients with advanced gastric cancer after failure of first-line chemotherapy. Ann Oncol 2019; 29:1220-1226. [PMID: 29438463 DOI: 10.1093/annonc/mdy055] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Background Paclitaxel is currently only available as an intravenous (i.v.) formulation. DHP107 is a novel oral formulation of lipid ingredients and paclitaxel. DHP107 demonstrated comparable efficacy, safety, and pharmacokinetics to i.v. paclitaxel as a second-line therapy in patients with advanced gastric cancer (AGC). DREAM is a multicenter, open-label, prospective, randomized phase III study of patients with histologically/cytologically confirmed, unresectable/recurrent AGC after first-line therapy failure. Methods and materials Patients were randomized 1 : 1 to DHP107 (200 mg/m2 orally twice daily days 1, 8, 15 every 4 weeks) or i.v. paclitaxel (175 mg/m2 day 1 every 3 weeks). Patients were stratified by Eastern Cooperative Oncology Group performance status, disease status, and prior treatment; response was assessed (Response Evaluation Criteria in Solid Tumors) every 6 weeks. Primary end point: non-inferiority of progression-free survival (PFS); secondary end points: overall response rate (ORR), overall survival (OS), and safety. For the efficacy analysis, sequential tests for non-inferiority were carried out, first with a non-inferiority margin of 1.48, then with a margin of 1.25. Results Baseline characteristics were balanced in the 236 randomized patients (n = 118 per arm). Median PFS (per-protocol) was 3.0 (95% CI 1.7-4.0) months for DHP107 and 2.6 (95% CI 1.8-2.8) months for paclitaxel (hazard ratio [HR] = 0.85; 95% CI 0.64-1.13). A sensitivity analysis on PFS using independent central review showed similar results (HR = 0.93; 95% CI 0.70-1.24). Median OS (full analysis set) was 9.7 (95% CI 7.1 - 11.5) months for DHP107 versus 8.9 (95% CI 7.1-12.2) months for paclitaxel (HR = 1.04; 95% CI 0.76-1.41). ORR was 17.8% for DHP107 (CR 4.2%; PR 13.6%) versus 25.4% for paclitaxel (CR 3.4%; PR 22.0%). Nausea, vomiting, diarrhea, and mucositis were more common with DHP107; peripheral neuropathy was more common with paclitaxel. There were only few Grade≥3 adverse events, most commonly neutropenia (42% versus 53%); febrile neutropenia was reported infrequently (5.9% versus 2.5%). No hypersensitivity reactions occurred with DHP107 (paclitaxel 2.5%). Conclusions DHP107 as a second-line treatment of AGC was non-inferior to paclitaxel for PFS; other efficacy and safety parameters were comparable. DHP107 is the first oral paclitaxel with proven efficacy/safety for the treatment of AGC. ClinicalTrials.gov NCT01839773.
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Affiliation(s)
- Y-K Kang
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul.
| | - M-H Ryu
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul
| | - S H Park
- Department of Hematology-Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul
| | - J G Kim
- Department of Oncology-Hematology, Kyungpook National University Hospital, Kyungpook National University School of Medicine, Daegu
| | - J W Kim
- Department of Hematology-Oncology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Bundang
| | - S-H Cho
- Department of Oncology, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun
| | - Y-I Park
- Department of Hematology-Oncology, Center for Gastric Cancer, National Cancer Center, Goyang
| | - S R Park
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul
| | - S Y Rha
- Department of Oncology, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul
| | - M J Kang
- Department of Hematology-Oncology, Haeundai Paik Hospital, University of Inje College of Medicine, Busan
| | - J Y Cho
- Department of Oncology, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul
| | - S Y Kang
- Department of Hematology-Oncology, Ajou University School of Medicine, Ajou University Hospital, Suwon
| | - S Y Roh
- Department of Oncology, Seoul St. Mary's Hospital, Catholic University of Korea, Seoul
| | - B-Y Ryoo
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul
| | - B-H Nam
- Biometric Research Branch, National Cancer Center, Goyang
| | - Y-W Jo
- Clinical Trials Department, DAEHWA Pharmaceutical Company Co., Ltd, Seoul
| | - K-E Yoon
- Clinical Trials Department, DAEHWA Pharmaceutical Company Co., Ltd, Seoul
| | - S C Oh
- Department of Oncology, Korea University Guro Hospital, Korea University College of Medicine, Seoul, South Korea
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Choi CU, Choi JI, Kim W, Jang WY, Kang DO, Park Y, Na JO, Kim EJ, Rha SW, Park CG, Seo HS, Kim JW. P2523Hand grip strength as a predictor of exercise capacity in coronary heart disease. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0852] [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
A recent study has shown that quadriceps strength can be used to predict the level of exercise capacity in patients with coronary heart disease (CHD). We investigated whether the relationship between muscular strength and exercise capacity is also observed with hand grip strength (HGS). We studied 443 participants (age, 61.8±11.2 y; 77.7% male) who underwent coronary intervention and participated in cardiac rehabilitation between 2015 and 2018. Participants were assessed for grip strength, measured using a Jamar dynamometer. Logistic regression was used to assess the relationship between various clinical measures (HGS, age, sex, etc) with the distance walked on a 6-minute walk test (6MWT) and maximal oxygen uptake (VO2max). HGS was significantly related to distance walked on the 6MWT (r=0.435, p<0.001). It was the only predictor of all exercise capacity categories, and one of the strongest predictors of each exercise capacity category. A HGS of 25.5% of body weight predicted an achievement of a 200 m walk on the 6MWT (positive predictive value = 0.95). However, HGS less than 35.5% of body weight predicted that 500m could not be done in 6 minutes (negative predictive value = 0.97). This trend was also observed in the subgroups in which VO2max was measured. This study demonstrates that HGS is associated with exercise capacity in CHD and can be used to predict the level of exercise capacity. These findings may contribute to setting the recommended level of daily activity as well as the level of cardiac rehabilitation in CHD.
Logistic regression models for different levels of exercise capacity Level of exercise capacity B±S.E p-value Odd ratio 95% CI Distance of 6MWT 200 m Grip strength 0.054±0.014 <0.001 1.056 1.027–1.086 300 m Grip strength 0.042±0.009 <0.001 1.042 1.024–1.062 400 m Grip strength 0.047±0.011 <0.001 1.048 1.026–1.070 500 m Grip strength 0.051±0.016 0.001 1.053 1.021–1.086 VO2max level 4 METs Grip strength 0.054±0.010 <0.001 1.056 1.036–1.076 6 METs Grip strength 0.059±0.011 <0.001 1.061 1.039–1.083 8 METs Grip strength 0.081±0.015 <0.001 1.085 1.053–1.117 10 METs Grip strength 0.113±0.049 0.019 1.12 1.019–3.232 Data are presented as mean ± standard deviation (SD). 6MWT, 6-minute walk test; STEMI, ST-Elevation Myocardial Infarction; SE, standard error; CI, confidence interval; VO2max, Maximal Oxygen uptake; METs, Metabolic equivalents.
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Affiliation(s)
- C U Choi
- Korea University Guro Hospital, Cardiology, Seoul, Korea (Republic of)
| | - J I Choi
- Korea University Anam Hospital, Seoul, Korea (Republic of)
| | - W Kim
- Korea University Guro Hospital, Cardiology, Seoul, Korea (Republic of)
| | - W Y Jang
- Korea University Guro Hospital, Cardiology, Seoul, Korea (Republic of)
| | - D O Kang
- Korea University Guro Hospital, Cardiology, Seoul, Korea (Republic of)
| | - Y Park
- Korea University Guro Hospital, Cardiology, Seoul, Korea (Republic of)
| | - J O Na
- Korea University Guro Hospital, Cardiology, Seoul, Korea (Republic of)
| | - E J Kim
- Korea University Guro Hospital, Cardiology, Seoul, Korea (Republic of)
| | - S W Rha
- Korea University Guro Hospital, Cardiology, Seoul, Korea (Republic of)
| | - C G Park
- Korea University Guro Hospital, Cardiology, Seoul, Korea (Republic of)
| | - H S Seo
- Korea University Guro Hospital, Cardiology, Seoul, Korea (Republic of)
| | - J W Kim
- Korea University Guro Hospital, Cardiology, Seoul, Korea (Republic of)
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Kim YC, Zhang YL, Park WJ, Cha GW, Kim JW, Hong WH. Analysis of Waste Generation Characteristics during New Apartment Construction-Considering the Construction Phase. Int J Environ Res Public Health 2019; 16:ijerph16183485. [PMID: 31546765 PMCID: PMC6765970 DOI: 10.3390/ijerph16183485] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 09/10/2019] [Accepted: 09/13/2019] [Indexed: 11/16/2022]
Abstract
The waste generation rate (WGR) is used to predict the generation of construction and demolition waste (C&DW) and has become a prevalent tool for efficient waste management systems. Many studies have focused on deriving the WGR, but most focused on demolition waste rather than construction waste (CW). Moreover, previous studies have used theoretical databases and thus were limited in showing changes in the generated CW during the construction period of actual sites. In this study, CW data were collected for recently completed apartment building sites through direct measurement, and the WGR was calculated by CW type for the construction period. The CW generation characteristics by type were analyzed, and the results were compared with those of previous studies. In this study, CW was classified into six types: Waste concrete, waste asphalt concrete, waste wood, waste synthetic resin, waste board, and mixed waste. The amount of CW generated was lowest at the beginning of the construction period. It slowly increased over time and then decreased again at the end. In particular, waste concrete and mixed waste were generated throughout the construction period, while other CWs were generated in the middle of the construction period or towards the end. The research method and results of this study are significant in that the construction period was considered, which has been neglected in previous studies on the WGR. These findings are expected to contribute to the development of efficient CW management systems.
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Affiliation(s)
- Young-Chan Kim
- Innovative Durable Building and Infrastructure Research Center, Hanyang University, 55 Hanyangdaehak-ro, Sangnok-gu, Ansan 426-791, Korea.
| | - Yuan-Long Zhang
- School of Architecture, Civil, Environmental and Energy Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Korea.
| | - Won-Jun Park
- Department of Civil Engineering, Kangwon National University, 346, Jungang-ro, Samcheok-si, Gangwon-do 25913, Korea.
| | - Gi-Wook Cha
- Department of Architectural Engineering, Jeju National University, 102 Jejudaehak-ro, Jeju-si, Jeju Special Self-Governing Province 63243, Korea.
| | - Jung-Wan Kim
- POSCO E&C, Building Works Division, Building Technology Group 241, Incheon tower-daero, Yeonsu-gu, Incheon 22009, Korea.
| | - Won-Hwa Hong
- School of Architecture, Civil, Environmental and Energy Engineering, Kyungpook National University, 80 Daehak-ro, Buk-gu, Daegu 41566, Korea.
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41
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Jeong DE, Kim JW, Kim BM, Hwang W, Kim DJ. Impact of Balloon-Guiding Catheter Location on Recanalization in Patients with Acute Stroke Treated by Mechanical Thrombectomy. AJNR Am J Neuroradiol 2019; 40:840-844. [PMID: 30948374 DOI: 10.3174/ajnr.a6031] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Accepted: 03/07/2019] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Mechanical thrombectomy with proximal flow control and forced aspiration may improve the outcome of endovascular revascularization therapy for patients with acute stroke. The purpose of this study was to compare the impact of balloon-guiding catheter locations in patients treated for anterior circulation acute ischemic stroke using mechanical thrombectomy. MATERIALS AND METHODS The influence of the balloon-guiding catheter location (proximal, balloon-guiding catheter tip proximal to C1 vertebral body; distal, between the skull base and the C1 vertebral body) was analyzed in patients with acute anterior circulation stroke treated with stent-retriever thrombectomy. The baseline angiographic/clinical characteristics, time intervals, recanalization rates, and clinical outcomes were compared. RESULTS The clinical analysis included 102 patients (mean age, 69.5 ± 12.8 years; male/female ratio = 52:50). The balloon-guiding catheter was located distally in 49 patients and proximally in 53 patients for flow control and forced aspiration during stent retrieval. The puncture-to-recanalization time was shorter in the distal group than in the proximal group (40 versus 56 minutes, P = .02). Successful and complete recanalizations were more frequently achieved in the distal group compared with the proximal group (98.0% versus 75.5%. P = .003; 67.3% versus 45.3%, P = .04, respectively). Multivariate analysis showed that the distal catheterization location was independently associated with successful recanalization (adjusted OR, 13.4; 95% CI, 2.4-254.8; P = .02). CONCLUSIONS Location of the balloon-guiding catheter has a significant impact on recanalization in patients with acute stroke. The balloon-guiding catheter should be positioned as distally as safely possible in the cervical ICA for maximally effective thrombectomy.
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Affiliation(s)
- D E Jeong
- From the Department of Radiology (D.E.J., J.W.K., B.M.K., D.J.K.), Yonsei University College of Medicine, Severance Hospital, Seoul, South Korea
- Department of Neurology (D.E.J.), YeongNam University College of Medicine, Daegu, South Korea
| | - J W Kim
- From the Department of Radiology (D.E.J., J.W.K., B.M.K., D.J.K.), Yonsei University College of Medicine, Severance Hospital, Seoul, South Korea
| | - B M Kim
- From the Department of Radiology (D.E.J., J.W.K., B.M.K., D.J.K.), Yonsei University College of Medicine, Severance Hospital, Seoul, South Korea
| | - W Hwang
- Department of Mechanical and Aerospace Engineering (W.H.), Seoul National University, Seoul, South Korea
| | - D J Kim
- From the Department of Radiology (D.E.J., J.W.K., B.M.K., D.J.K.), Yonsei University College of Medicine, Severance Hospital, Seoul, South Korea
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Nguyen DHD, Park SH, Tran PL, Kim JW, Le QT, Boos W, Park JT. Characterization of the Transglycosylation Reaction of 4-α-Glucanotransferase (MalQ) and Its Role in Glycogen Breakdown in Escherichia coli. J Microbiol Biotechnol 2019; 29:357-366. [PMID: 30691252 DOI: 10.4014/jmb.1811.11051] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
We first confirmed the involvement of MalQ (4-α-glucanotransferase) in Escherichia coli glycogen breakdown by both in vitro and in vivo assays. In vivo tests of the knock-out mutant, ΔmalQ, showed that glycogen slowly decreased after the stationary phase compared to the wild-type strain, indicating the involvement of MalQ in glycogen degradation. In vitro assays incubated glycogen-mimic substrate, branched cyclodextrin (maltotetraosyl-β-CD: G4- β-CD) and glycogen phosphorylase (GlgP)-limit dextrin with a set of variable combinations of E. coli enzymes, including GlgX (debranching enzyme), MalP (maltodextrin phosphorylase), GlgP and MalQ. In the absence of GlgP, the reaction of MalP, GlgX and MalQ on substrates produced glucose-1-P (glc-1-P) 3-fold faster than without MalQ. The results revealed that MalQ led to disproportionate G4 released from GlgP-limit dextrin to another acceptor, G4, which is phosphorylated by MalP. In contrast, in the absence of MalP, the reaction of GlgX, GlgP and MalQ resulted in a 1.6-fold increased production of glc-1-P than without MalQ. The result indicated that the G4-branch chains of GlgP-limit dextrin are released by GlgX hydrolysis, and then MalQ transfers the resultant G4 either to another branch chain or another G4 that can immediately be phosphorylated into glc-1-P by GlgP. Thus, we propose a model of two possible MalQ-involved pathways in glycogen degradation. The operon structure of MalP-defecting enterobacteria strongly supports the involvement of MalQ and GlgP as alternative pathways in glycogen degradation.
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Affiliation(s)
- Dang Hai Dang Nguyen
- Department of Foodservice Management and Nutrition, Sangmyung University, Seoul 03016, Republic of Korea
| | - Sung-Hoon Park
- Research Institute of Food and Biotechnology, SPC Group, Seoul 08826, Republic of Korea
| | | | - Jung-Wan Kim
- Department of Biology, University of Incheon, Incheon 22012, Republic of Korea
| | - Quang Tri Le
- Faculty of Food Science, Tien Giang University, My Tho, Vietnam
| | - Winfried Boos
- Department of Biology, University of Konstanz, Germany
| | - Jong-Tae Park
- Department of Food Science and Technology, Chungnam National University, Daejeon 34134, Republic of Korea
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Davoodbasha MA, Saravanakumar K, Abdulkader AM, Lee SY, Kim JW. Synthesis of Biocompatible Cellulose-Coated Nanoceria with pH-Dependent Antioxidant Property. ACS Appl Bio Mater 2019; 2:1792-1801. [DOI: 10.1021/acsabm.8b00647] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Mubarak Ali Davoodbasha
- School of Life Sciences, BSA Crescent Institute of Science and Technology, Chennai 600048, Tamil Nadu, India
- Division of Bioengineering, College of Life Sciences and Bioengineering, Incheon National University, Incheon 22012, Republic of Korea
- Centre for Surface Technology and Applications, Department of Materials Engineering, Korea Aerospace University, Goyang 10540, Republic of Korea
| | - Kandasamy Saravanakumar
- Department of Medical Biotechnology, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Akbarsha Mohammad Abdulkader
- Mahatma Gandhi-Doerenkamp Center for Alternatives to Use of Animals in Life Science Education (MGDC), Bharathidasan University, Tiruchirappalli 620024, Tamil Nadu, India
- Research Division, National College (Autonomous),, Bharathidasan University, Tiruchirappalli 620021, Tamil Nadu, India
| | - Sang-Yul Lee
- Centre for Surface Technology and Applications, Department of Materials Engineering, Korea Aerospace University, Goyang 10540, Republic of Korea
| | - Jung-Wan Kim
- Division of Bioengineering, College of Life Sciences and Bioengineering, Incheon National University, Incheon 22012, Republic of Korea
- Centre for Surface Technology and Applications, Department of Materials Engineering, Korea Aerospace University, Goyang 10540, Republic of Korea
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Kim JW, Sanjayan N, Leterme P, Nyachoti CM. Relative bioavailability of phosphorus in high-protein sunflower meal for broiler chickens and effects of dietary phytase supplementation on bone traits, growth performance, and apparent ileal digestibility of nutrients. Poult Sci 2019; 98:298-305. [PMID: 30107506 DOI: 10.3382/ps/pey346] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Accepted: 07/14/2018] [Indexed: 11/20/2022] Open
Abstract
An experiment was conducted to determine the relative bioavailability (RBV) of P in high-protein sunflower meal (HP-SFM) fed to broiler chickens based on bone traits and to determine the effects of dietary phytase supplementation and increasing levels of HP-SFM as a P source on bone traits, growth performance, and apparent ileal digestibility (AID) of DM and nutrients. In total, 240 broiler chicks were randomly allotted to 1 of 10 experimental diets with 6 replicate cages of 4 birds each and fed experimental diets from day 14 to 21 of age. Diets included a corn-soybean meal-based basal diet (0.35% total P; P-deficient diet), or the basal diet supplemented with 0.05, 0.10, or 0.15% P from either monosodium phosphate (MSP) or HP-SFM. Another 3 diets were formulated by supplementing the HP-SFM-containing diets with 500 phytase unit/kg of phytase. The bone mineral content (BMC), bone area (BA), and bone mineral density (BMD) of femur and tibia and tibia ash content increased (linear, P < 0.01) with increasing dietary P content from MSP. A linear increase in femur and tibia BMC, femur BA, and tibia BMD was also observed (P < 0.01) with increasing level of dietary P from HP-SFM. The RBV of P in HP-SFM based on femur and tibia BMC were 41 and 44%, respectively. Dietary phytase supplementation increased (P < 0.01) most of bone traits of the birds except for femur BMD. In addition, birds fed the diets supplemented with dietary phytase had greater (P < 0.05) BW gain, feed efficiency, and AID of P than those fed the diets without dietary phytase. In conclusion, the estimated RBV of P in HP-SFM to P in MSP were 41 and 44% based on femur and tibia BMC, respectively. Also, dietary phytase supplementation increased AID of P, growth performance, and bone traits of the birds fed P-deficient diets containing increasing inclusion level of HP-SFM as a P source.
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Affiliation(s)
- J W Kim
- Department of Animal Science, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
| | - N Sanjayan
- Department of Animal Science, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
| | - P Leterme
- BUNGE Global Innovation, calle Constitución 1, 08960 St Just Desvern (BCN), Spain
| | - C M Nyachoti
- Department of Animal Science, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
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MubarakAli D, Park J, Han T, Srinivasan H, Lee SY, Kim JW. Solution plasma process: An option to degrade bisphenol A in liquid-phase to non-toxic products. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.12.041] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Abstract
In clinical settings, the language ability of patients with neurologic communication disorders have been measured by quantitative parameters such as the total number of words in dialogue and picture description tasks. However, this quantitative analysis requires a long period of time in order to analyze the quantitative parameters, and results can differ according to discourse tasks. The purposes of this study are to explore whether SR-D may predict the quantitative measures of discourse tasks. Forty patients with amnestic MCI and 40 normal elderly participated in the study. We gathered responses to 10 items regarding SR-D and analyzed the quantitative measures of narrative discourse through 3 discourse tasks (i.e, picture description, dialogue, procedural discourse). We found significant differences in MLTW, CIU, and SR-D scores between the 2 groups. In particular, 4 items were significantly correlated with the performance of MLTW and CIU. Sensitivity and specificity of these 4 items were 100% and 75%, respectively. In terms of economic opportunity costs, objective measures cannot be evaluated to be practical, since it is used in research rather than clinical diagnosis in general. Therefore, evaluation of discourse using a few items proven in its sensitivity and specificity could allow a wide use of such measure in not only research but also in clinical diagnosis. These findings suggest that subjective measures of narrative discourse may be valid with objective language tests to predict individual discourse performance.
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Affiliation(s)
- JungWan Kim
- Department of Speech and Language Pathology, College of Rehabilitation Sciences
| | - Jihye Shim
- Rehabilitation & Science Graduate Program, Daegu University, Gyeongsan
| | - Ji Hye Yoon
- Division of Speech Pathology and Audiology, College of Natural Sciences, Hallym University
- Research Institute of Audiology and Speech Pathology, Hallym University, Chuncheon, Republic of Korea
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47
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Kim JW, Jung HY, Won DY, Shin YS, Noh JH, Kang TI. Landscape of Elderly Suicide in South Korea: Its Trend According to Age, Gender, and Educational Attainment. Omega (Westport) 2018; 82:214-229. [PMID: 30360680 DOI: 10.1177/0030222818807845] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
South Korea has one of the highest suicide rates in the world, and the most alarming suicide rate is among its elders. This study aims to understand the social, historical, and cultural context of the Korean older adults and examine suicide trends based on that understanding. The results show that the suicide risk increases with age, the male suicide rate outweighs that of females, and the suicide rate decreases with educational attainment. In addition, several suggestions for reducing elderly suicide rate are addressed, including differentiating the existing social services for elders by age and expanding suicide prevention programs beyond schools to communities so that all people in need can access them.
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Affiliation(s)
- J W Kim
- Department of Social Welfare, Sungkyunkwan University, Seoul, Republic of Korea
| | - H Y Jung
- Department of Social Welfare, Sungkyunkwan University, Seoul, Republic of Korea.,Research Institute of Social Welfare, Sungkyunkwan University, Seoul, Republic of Korea
| | - D Y Won
- Department of Social Welfare, Sungkyunkwan University, Seoul, Republic of Korea
| | - Y S Shin
- Research Institute of Social Welfare, Sungkyunkwan University, Seoul, Republic of Korea
| | - J H Noh
- Department of Social Welfare, Sungkyunkwan University, Seoul, Republic of Korea.,Baekseok University, Cheonan, Republic of Korea
| | - T I Kang
- Department of Social Welfare, Daelim University, Anyang, Republic of Korea.,Choong Hyun Community Welfare Center, Seoul, Republic of Korea
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48
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Park EJ, Eo JS, Jang WY, Na JO, Choi CU, Kim EJ, Rha SW, Park CG, Seo HS, Kim JW. P1689Association of brain amygdalar activity with plaque burden and vulnerability in coronary artery. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1689] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- E J Park
- Korea University Guro Hospital, Caradiovascular Center, Seoul, Korea Republic of
| | - J S Eo
- Korea University Guro Hospital, Department of Nuclear Medicine, Seoul, Korea Republic of
| | - W Y Jang
- Korea University Guro Hospital, Caradiovascular Center, Seoul, Korea Republic of
| | - J O Na
- Korea University Guro Hospital, Caradiovascular Center, Seoul, Korea Republic of
| | - C U Choi
- Korea University Guro Hospital, Caradiovascular Center, Seoul, Korea Republic of
| | - E J Kim
- Korea University Guro Hospital, Caradiovascular Center, Seoul, Korea Republic of
| | - S W Rha
- Korea University Guro Hospital, Caradiovascular Center, Seoul, Korea Republic of
| | - C G Park
- Korea University Guro Hospital, Caradiovascular Center, Seoul, Korea Republic of
| | - H S Seo
- Korea University Guro Hospital, Caradiovascular Center, Seoul, Korea Republic of
| | - J W Kim
- Korea University Guro Hospital, Caradiovascular Center, Seoul, Korea Republic of
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49
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Park EJ, Kim WH, Choi JY, Jang WY, Na JO, Choi JI, Kim JW, Kim EJ, Rha SW, Park CG, Seo HS, Choi CU. P2690The bleeding and cardiovascular risk according to NSAIDs selectivity in patients receiving antithrombotics and concomitant NSAIDs after myocardial infarction: a nationwide cohort study. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p2690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- E J Park
- Korea University Guro Hospital, Cardiology, Seoul, Korea Republic of
| | - W H Kim
- Korea University Guro Hospital, Cardiology, Seoul, Korea Republic of
| | - J Y Choi
- Korea University Guro Hospital, Cardiology, Seoul, Korea Republic of
| | - W Y Jang
- Korea University Guro Hospital, Cardiology, Seoul, Korea Republic of
| | - J O Na
- Korea University Guro Hospital, Cardiology, Seoul, Korea Republic of
| | - J I Choi
- Korea University Anam Hospital, Seoul, Korea Republic of
| | - J W Kim
- Korea University Guro Hospital, Cardiology, Seoul, Korea Republic of
| | - E J Kim
- Korea University Guro Hospital, Cardiology, Seoul, Korea Republic of
| | - S W Rha
- Korea University Guro Hospital, Cardiology, Seoul, Korea Republic of
| | - C G Park
- Korea University Guro Hospital, Cardiology, Seoul, Korea Republic of
| | - H S Seo
- Korea University Guro Hospital, Cardiology, Seoul, Korea Republic of
| | - C U Choi
- Korea University Guro Hospital, Cardiology, Seoul, Korea Republic of
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Davoodbasha M, Lee SY, Kim JW. Solution plasma mediated formation of low molecular weight chitosan and its application as a biomaterial. Int J Biol Macromol 2018; 118:1511-1517. [PMID: 29966672 DOI: 10.1016/j.ijbiomac.2018.06.168] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 05/31/2018] [Accepted: 06/28/2018] [Indexed: 02/06/2023]
Abstract
Low molecular weight (LMW) chitosan has been a great attention in bio-molecular chemistry, medicine, and drug delivery system in particular. Depolymerization of high molecular weight (HMW) chitosan to LMW chitosan was achieved by solution plasma process (SPP) without affecting its chemical structures. Chitosan in solution was depolymerized by discharging plasma at 800 V with 35 kHz for various times (15-120 min). Gel permeation chromatography analysis revealed that molecular weight of chitosan decreased from 3.0 × 105 Da to 7.8 × 103 Da in 30 min plasma treatment, and further to 4.6 × 103 Da in 90 min. Dynamic light scattering and zeta potential studies confirmed formation of chitosan nano-aggregates. Interestingly, the LMW chitosan samples showed antimicrobial activity against Escherichia coli, Staphylococcus aureus, and Candida albicans with minimal inhibitory concentration of 80-1200 μg·mL-1. They also exhibited an excellent antioxidant activity (58-75%) and swelling ratio of 0.2-2.0 mg·mg-1. LMW chitosan was likely to have potential for sustainable usage as carrier molecules, biomaterials, and biomedical applications.
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Affiliation(s)
- MubarakAli Davoodbasha
- Division of Bioengineering, College of Life Sciences and Bioengineering, Incheon National University, Republic of Korea; Center for Surface Technology and Application, Korea Aerospace University, Republic of Korea; National Repository for Microalgae and Cyanobacteria - Freshwater (DBT, Govt. of India), Department of Microbiology, Bharathidasan University, Tiruchirappalli, India.
| | - Sang-Yul Lee
- Center for Surface Technology and Application, Korea Aerospace University, Republic of Korea.
| | - Jung-Wan Kim
- Division of Bioengineering, College of Life Sciences and Bioengineering, Incheon National University, Republic of Korea; Center for Surface Technology and Application, Korea Aerospace University, Republic of Korea.
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