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  1. Article ; Online: Risk Assessment in Practice

    MinKyung Cho / HongSik Yun

    Sustainability, Vol 15, Iss 6047, p

    A Case Analysis of the Pohang Steel Mill in Korea

    2023  Volume 6047

    Abstract: In this study, the case of Pohang Steelworks, a national infrastructure leading the Korean steel industry, was analyzed. Pohang Works, which is a national infrastructure and a national core technology, requires continuous operation, so a risk assessment ... ...

    Abstract In this study, the case of Pohang Steelworks, a national infrastructure leading the Korean steel industry, was analyzed. Pohang Works, which is a national infrastructure and a national core technology, requires continuous operation, so a risk assessment is required. The survey involved the participation of 30 safety experts from Pohang Works, and additional interviews were conducted to improve the understanding of the survey results. As a result of the qualitative evaluation, the value of the identified risk was obtained, and the value was variable in probability and damage impact. In addition to being prioritized in order of highest risk, they are also placed according to the size of the risk. As a result, the necessary structural and non-structural treatments were proposed for a total of four hazards. Due to the nature of the qualitative evaluation conducted by internal experts, we were able to confirm that internal experts tend to be very aware of and respond to the risks they often face. It is expected that the objectivity of risk assessment results can be increased by adding quantitative methods in future studies. In addition, it is meaningful in that it practically suggests a treatment that focuses on risk management.
    Keywords risk assessment ; qualitative evaluation ; survey method ; priority ; risk treatment ; Environmental effects of industries and plants ; TD194-195 ; Renewable energy sources ; TJ807-830 ; Environmental sciences ; GE1-350
    Subject code 650
    Language English
    Publishing date 2023-03-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Application of Cartilage Extracellular Matrix to Enhance Therapeutic Efficacy of Methotrexate.

    Seo, Jeong-Woo / Jo, Sung-Han / Kim, Seon-Hwa / Choi, Byeong-Hoon / Cho, Hongsik / Yoo, James J / Park, Sang-Hyug

    Tissue engineering and regenerative medicine

    2023  Volume 21, Issue 2, Page(s) 209–221

    Abstract: Background: Rheumatoid arthritis (RA) is characterized by chronic inflammation and joint damage. Methotrexate (MTX), a commonly used disease-modifying anti-rheumatic drug (DMARD) used in RA treatment. However, the continued use of DMARDs can cause ... ...

    Abstract Background: Rheumatoid arthritis (RA) is characterized by chronic inflammation and joint damage. Methotrexate (MTX), a commonly used disease-modifying anti-rheumatic drug (DMARD) used in RA treatment. However, the continued use of DMARDs can cause adverse effects and result in limited therapeutic efficacy. Cartilage extracellular matrix (CECM) has anti-inflammatory and anti-vascular effects and promotes stem cell migration, adhesion, and differentiation into cartilage cells.
    Methods: CECM was assessed the dsDNA, glycosaminoglycan, collagen contents and FT-IR spectrum of CECM. Furthermore, we determined the effects of CECM and MTX on cytocompatibility in the SW 982 cells and RAW 264.7 cells. The anti-inflammatory effects of CECM and MTX were assessed using macrophage cells. Finally, we examined the in vivo effects of CECM in combination with MTX on anti-inflammation control and cartilage degradation in collagen-induced arthritis model. Anti-inflammation control and cartilage degradation were assessed by measuring the serum levels of RA-related cytokines and histology.
    Results: CECM in combination with MTX had no effect on SW 982, effectively suppressing only RAW 264.7 activity. Moreover, anti-inflammatory effects were enhanced when low-dose MTX was combined with CECM. In a collagen-induced arthritis model, low-dose MTX combined with CECM remarkably reduced RA-related and pro-inflammatory cytokine levels in the blood. Additionally, low-dose MTX combined with CECM exerted the best cartilage-preservation effects compared to those observed in the other therapy groups.
    Conclusion: Using CECM as an adjuvant in RA treatment can augment the therapeutic effects of MTX, reduce existing drug adverse effects, and promote joint tissue regeneration.
    MeSH term(s) Animals ; Humans ; Methotrexate/pharmacology ; Methotrexate/therapeutic use ; Arthritis, Experimental/drug therapy ; Arthritis, Experimental/pathology ; Spectroscopy, Fourier Transform Infrared ; Antirheumatic Agents/pharmacology ; Antirheumatic Agents/therapeutic use ; Arthritis, Rheumatoid/drug therapy ; Arthritis, Rheumatoid/metabolism ; Cytokines/metabolism ; Extracellular Matrix/metabolism ; Anti-Inflammatory Agents ; Cartilage/metabolism
    Chemical Substances Methotrexate (YL5FZ2Y5U1) ; Antirheumatic Agents ; Cytokines ; Anti-Inflammatory Agents
    Language English
    Publishing date 2023-10-14
    Publishing country Korea (South)
    Document type Journal Article
    ZDB-ID 2677535-9
    ISSN 2212-5469 ; 1738-2696
    ISSN (online) 2212-5469
    ISSN 1738-2696
    DOI 10.1007/s13770-023-00587-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Anti-inflammatory role of TPCA-1 encapsulated nanosomes in porcine chondrocytes against TNF-α stimulation.

    Bhatti, Fazal Ur Rehman / Hasty, Karen A / Cho, Hongsik

    Inflammopharmacology

    2019  Volume 27, Issue 5, Page(s) 1011–1019

    Abstract: In this study, we evaluated the hypothesis that immunonanosomes carrying the drug [5-(p-Fluorophenyl)-2-ureido]thiophene-3-carboxamide (TPCA-1) will help in reducing nuclear factor-kappaB (NF-κB)-associated inflammation in porcine chondrocytes against ... ...

    Abstract In this study, we evaluated the hypothesis that immunonanosomes carrying the drug [5-(p-Fluorophenyl)-2-ureido]thiophene-3-carboxamide (TPCA-1) will help in reducing nuclear factor-kappaB (NF-κB)-associated inflammation in porcine chondrocytes against tumor necrosis factor-alpha (TNF-α)-induced stress. The nanosomes were tagged with monoclonal anti-type II collagen (MabCII) antibody to specifically target the exposed type II collagen in cartilage matrix. TPCA-1 at a concentration of 10 µM significantly reduced expression of the matrix-degrading enzyme, Matrix metalloproteinase-13 (MMP-13) and blocked the p65 nuclear translocation. In comparison to the TPCA-1 solution alone, the TPCA-1 nanosomes were found to be more effective in reducing the cellular toxicity, oxidative stress and inflammation in chondrocytes treated with TNF-α. In addition, TPCA-1 nanosomes were more effective in reducing the gene expression of hypoxia-inducible factor-2alpha (HIF-2α) that in turn is associated with the regulation of MMP-13 gene. TPCA-1 nanosomes significantly reduced expression of both these genes. The data also showed that TPCA-1 did not attenuate the down-regulated gene expression levels of anabolic genes aggrecan (ACAN) and collagen type II alpha (COL2A1). In conclusion, this study showed that TPCA-1 nanosomes carrying a dose of 10 µM TPCA-1 can effectively increase the survival of cultured porcine chondrocytes against TNF-α-induced stress. The findings of this study could be used to develop nanosome-based drug delivery systems (DDSs) for animal model of OA. Moreover, the approach presented here can be further utilized in other studies for targeted delivery of the drug of interest at a cellular level.
    MeSH term(s) Amides/pharmacology ; Animals ; Anti-Inflammatory Agents/pharmacology ; Basic Helix-Loop-Helix Transcription Factors/metabolism ; Chondrocytes/drug effects ; Chondrocytes/metabolism ; Collagen Type II/metabolism ; Down-Regulation/drug effects ; Drug Delivery Systems/methods ; Gene Expression/drug effects ; Inflammation/drug therapy ; Inflammation/metabolism ; Matrix Metalloproteinase 13/metabolism ; Osteoarthritis/drug therapy ; Osteoarthritis/metabolism ; Signal Transduction/drug effects ; Swine ; Thiophenes/pharmacology ; Tumor Necrosis Factor-alpha/metabolism
    Chemical Substances Amides ; Anti-Inflammatory Agents ; Basic Helix-Loop-Helix Transcription Factors ; Collagen Type II ; Thiophenes ; Tumor Necrosis Factor-alpha ; endothelial PAS domain-containing protein 1 (1B37H0967P) ; 2-((aminocarbonyl)amino)-5-(4-fluorophenyl)-3-thiophenecarboxamide (9M632G86CC) ; Matrix Metalloproteinase 13 (EC 3.4.24.-)
    Language English
    Publishing date 2019-01-01
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 1080058-x
    ISSN 1568-5608 ; 0925-4692
    ISSN (online) 1568-5608
    ISSN 0925-4692
    DOI 10.1007/s10787-018-0542-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Reducing the carbon footprint of operating rooms through education on the effects of inhalation anesthetics on global warming: A retrospective study.

    Park, Eun Ji / Bae, Jaesang / Kim, Jisu / Yoon, Ji-Uk / Do, Wangseok / Yoon, Jung-Pil / Shon, Hong-Sik / Kang, Yerin / Kim, Hee Young / Cho, Ah-Reum

    Medicine

    2024  Volume 103, Issue 9, Page(s) e37256

    Abstract: Environmental concerns, especially global warming, have prompted efforts to reduce greenhouse gas emissions. Healthcare systems, including anesthesia practices, contribute to these emissions. Inhalation anesthetics have a significant environmental impact, ...

    Abstract Environmental concerns, especially global warming, have prompted efforts to reduce greenhouse gas emissions. Healthcare systems, including anesthesia practices, contribute to these emissions. Inhalation anesthetics have a significant environmental impact, with desflurane being the most concerning because of its high global warming potential. This study aimed to educate anesthesiologists on the environmental impact of inhalation anesthetics and assess changes in awareness and practice patterns, specifically reducing desflurane use. This study included data from patients who underwent surgery under general anesthesia 1 month before and after education on the effects of inhalation anesthetics on global warming. The primary endpoint was a change in inhalational anesthetic use. Secondary endpoints included changes in carbon dioxide equivalent (CO2e) emissions, driving equivalent, and medical costs. After the education, desflurane use decreased by 50%, whereas sevoflurane use increased by 50%. This shift resulted in a reduction in the overall amount of inhalational anesthetics used. The total CO2e and driving-equivalent values decreased significantly. The cost per anesthesia case decreased, albeit to a lesser extent than expected. Education on the environmental impact of inhalation anesthetics has successfully altered anesthesiologists' practice patterns, leading to reduced desflurane usage. This change has resulted in decreased CO2e emissions and has had a positive effect on mitigating global warming. However, further research is required to assess the long-term impact of such education and the variability in practice patterns across different institutions.
    MeSH term(s) Humans ; Anesthetics, Inhalation ; Desflurane ; Retrospective Studies ; Global Warming/prevention & control ; Carbon Footprint ; Isoflurane ; Operating Rooms
    Chemical Substances Anesthetics, Inhalation ; Desflurane (CRS35BZ94Q) ; Isoflurane (CYS9AKD70P)
    Language English
    Publishing date 2024-02-28
    Publishing country United States
    Document type Journal Article
    ZDB-ID 80184-7
    ISSN 1536-5964 ; 0025-7974
    ISSN (online) 1536-5964
    ISSN 0025-7974
    DOI 10.1097/MD.0000000000037256
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Understanding Early-Stage Posttraumatic Osteoarthritis for Future Prospects of Diagnosis: from Knee to Temporomandibular Joint.

    Bhatti, Fazal-Ur-Rehman / Karydis, Anastasios / Lee, Beth S / Deguchi, Toru / Kim, Do-Gyoon / Cho, Hongsik

    Current osteoporosis reports

    2021  Volume 19, Issue 2, Page(s) 166–174

    Abstract: Purpose of review: Many mechanical load-bearing joints of the body are prone to posttraumatic osteoarthritis (PTOA), including the knee joint and temporomandibular joint (TMJ). Early detection of PTOA can be beneficial in prevention or alleviating ... ...

    Abstract Purpose of review: Many mechanical load-bearing joints of the body are prone to posttraumatic osteoarthritis (PTOA), including the knee joint and temporomandibular joint (TMJ). Early detection of PTOA can be beneficial in prevention or alleviating further progression of the disease.
    Recent findings: Various mouse models, similar to those used in development of novel diagnosis strategies for early stages of OA, have been proposed to study early PTOA. While many studies have focused on OA and PTOA in the knee joint, early diagnostic methods for OA and PTOA of the TMJ are still not well established. Previously, we showed that fluorescent near-infrared imaging can diagnose inflammation and cartilage damage in mouse models of knee PTOA. Here we propose that the same approach can be used for early diagnosis of TMJ-PTOA. In this review, we present a brief overview of PTOA, application of relevant mouse models, current imaging methods available to examine TMJ-PTOA, and the prospects of near-infrared optical imaging to diagnose early-stage TMJ-OA.
    MeSH term(s) Animals ; Diagnostic Imaging ; Disease Models, Animal ; Disease Progression ; Early Diagnosis ; Humans ; Mice ; Osteoarthritis/diagnosis ; Osteoarthritis/pathology ; Osteoarthritis, Knee/diagnosis ; Osteoarthritis, Knee/pathology ; Temporomandibular Joint Disorders/diagnosis ; Temporomandibular Joint Disorders/pathology
    Language English
    Publishing date 2021-02-01
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 2186581-4
    ISSN 1544-2241 ; 1544-1873
    ISSN (online) 1544-2241
    ISSN 1544-1873
    DOI 10.1007/s11914-021-00661-3
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Characterization of Non-Invasively Induced Post-Traumatic Osteoarthritis in Mice.

    Bhatti, Fazal-Ur-Rehman / Jeong, Yong-Hoon / Kim, Do-Gyoon / Yi, Ae-Kyung / Brand, David D / Hasty, Karen A / Cho, Hongsik

    Antioxidants (Basel, Switzerland)

    2022  Volume 11, Issue 9

    Abstract: The pathophysiology of post-traumatic arthritis (PTOA) is not fully understood. This study used non-invasive repetitive mechanical loading (ML) mouse models to study biochemical, biomechanical, and pain-related behavioral changes induced in mice. Mouse ... ...

    Abstract The pathophysiology of post-traumatic arthritis (PTOA) is not fully understood. This study used non-invasive repetitive mechanical loading (ML) mouse models to study biochemical, biomechanical, and pain-related behavioral changes induced in mice. Mouse models reflected the effects of the early stages of PTOA in humans. For the PTOA model, cyclic comprehensive loading (9N) was applied to each mouse's left knee joint. ML-induced biochemical and molecular changes were analyzed after loading completion. Cartilage samples were examined using gene expression analysis. Tissue sections were used in subsequent OA severity scoring. Biomechanical features and pain-related behavior were studied after 24 h and three weeks post-ML sessions to examine the development of PTOA. The loaded left knee joint showed a greater ROS/RNS signal than the right knee, which was not loaded. There was a significant increase in cartilage damage and MMP activity in the mechanically loaded joints relative to non-loaded control knee joints. Similarly, we found a difference in the viscoelastic tangent, which highlights significant changes in mechanical properties. Biochemical analyses revealed significant increases in total NO, caspase-3 activity, H
    Language English
    Publishing date 2022-09-09
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2704216-9
    ISSN 2076-3921
    ISSN 2076-3921
    DOI 10.3390/antiox11091783
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Stem Cell Considerations for the Clinician.

    Hasty, Karen A / Cho, Hongsik

    Physical medicine and rehabilitation clinics of North America

    2016  Volume 27, Issue 4, Page(s) 855–870

    Abstract: Although there is ample evidence that beneficial results can be obtained from the use of mesenchymal stem cells, several questions regarding their use remain to be answered. For many of these questions, preclinical models will be helpful, but the task ... ...

    Abstract "Although there is ample evidence that beneficial results can be obtained from the use of mesenchymal stem cells, several questions regarding their use remain to be answered. For many of these questions, preclinical models will be helpful, but the task of evaluating and implementing these findings for orthopaedic patients falls onto the shoulders of clinical researchers. Evaluation of these questions is a daunting, but such a challenge fits the concept of personalized medicine in today's medicine."
    Language English
    Publishing date 2016-11
    Publishing country United States
    Document type Review ; Journal Article
    ZDB-ID 1196791-2
    ISSN 1558-1381 ; 1047-9651
    ISSN (online) 1558-1381
    ISSN 1047-9651
    DOI 10.1016/j.pmr.2016.06.004
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Prevalence of Internet Gaming Disorder among Korean Adolescents and Associations with Non-psychotic Psychological Symptoms, and Physical Aggression.

    Yu, Hongsik / Cho, Jaehee

    American journal of health behavior

    2016  Volume 40, Issue 6, Page(s) 705–716

    Abstract: Objective: We examined the prevalence rates of Internet gaming disorder among South Korean middle school students, the dominant symptoms of Internet gaming disorder, and the interrelationships between such disorder and non-psychotic psychological ... ...

    Abstract Objective: We examined the prevalence rates of Internet gaming disorder among South Korean middle school students, the dominant symptoms of Internet gaming disorder, and the interrelationships between such disorder and non-psychotic psychological symptoms (ie, anxiety, depression, and impulsiveness) and with physical aggression.
    Methods: Data were collected from a national sample of 2024 students (70.3% gamers; 50.6% boys). Gaming disorder and prevalent symptoms were measured by the 9 diagnostic criteria proposed in DSM-5.
    Results: Our results showed 5.9% of the sample (boys 10.4%, girls 1.2%) was classified as adolescents with gaming disorder. Meanwhile, 8% (boys 14.2%, girls 5.9%) of the sample was found to be at high risk of gaming disorder. The prevalent symptoms were mood modification, behavioral salience, conflict, withdrawal, and relapse, in that order. A total of 9.2%, 15.1%, and 10.9% of the adolescents with gaming disorder had non-psychotic psychological anxiety, depression, and impulsiveness symptoms, respectively. Nearly 11% of students with Internet gaming disorder had 2 non-psychotic psychological symptoms or more.
    Conclusion: These results provide supportive empirical evidence that Internet gaming disorder can lead to severe distress and that it can be associated with comorbid symptoms that are relevant to development or continuance of the gaming disorder.
    MeSH term(s) Adolescent ; Aggression/psychology ; Anxiety/epidemiology ; Anxiety/psychology ; Behavior, Addictive/epidemiology ; Behavior, Addictive/psychology ; Depression/epidemiology ; Depression/psychology ; Female ; Humans ; Male ; Prevalence ; Republic of Korea/epidemiology
    Language English
    Publishing date 2016
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1312417-1
    ISSN 1945-7359 ; 1087-3244 ; 0147-0353
    ISSN (online) 1945-7359
    ISSN 1087-3244 ; 0147-0353
    DOI 10.5993/AJHB.40.6.3
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Stem Rot of Gondre Caused by Rhizoctonia solani AG-2-2(IV)

    Wan-Gyu Kim / Gyo-Bin Lee / Hong-Sik Shim / Weon-Dae Cho

    한국균학회지, Vol 51, Iss 2, Pp 141-

    2023  Volume 146

    Abstract: Stem rot symptoms were observed in Gondre (Cirsium setidens) plants growing in a vinyl greenhouse in Taebaek, Korea during a disease survey in June 2022. The plants presented with dark brown to black rot on the stems at or above the soil line. Severely ... ...

    Abstract Stem rot symptoms were observed in Gondre (Cirsium setidens) plants growing in a vinyl greenhouse in Taebaek, Korea during a disease survey in June 2022. The plants presented with dark brown to black rot on the stems at or above the soil line. Severely diseased plants displayed wilt and blight. Disease incidence among these plants ranged from 1 to 5%. Three isolates of Rhizoctonia sp. were obtained from the stem lesions of diseased plants. All isolates were identified as Rhizoctonia solani AG-2-2(IV) based on the morphological and cultural characteristics, results of the anastomosis test, and phylogenetic analysis. The pathogenicity of the isolates to Gondre plants was confirmed using an artificial inoculation test. The lesions induced by the inoculation test were similar to those observed in the investigated vinyl greenhouse. Here, we report a case of R. solani AG-2-2(IV) causing stem rot in Gondre.
    Keywords anastomosis ; gondre ; cirsium setidens ; rhizoctonia solani ag-2-2(iv) ; stem rot ; Biology (General) ; QH301-705.5
    Language English
    Publishing date 2023-06-01T00:00:00Z
    Publisher The Korean Society of Mycology
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  10. Article ; Online: First Report of Leaf Spot in Fischer's Ragwort Caused by

    Gyo-Bin Lee / Hong-Sik Shim / Weon-Dae Cho / Wan-Gyu Kim

    Research in Plant Disease, Vol 29, Iss 1, Pp 60-

    2023  Volume 63

    Abstract: During disease surveys from 2019 to 2021, the authors frequently encountered leaf spot symptoms on Fischer's ragwort plants growing at fields at six locations of Gangwon Province, Korea. The symptoms displayed brown to dark brown, circular or irregular ... ...

    Abstract During disease surveys from 2019 to 2021, the authors frequently encountered leaf spot symptoms on Fischer's ragwort plants growing at fields at six locations of Gangwon Province, Korea. The symptoms displayed brown to dark brown, circular or irregular spots on the plant leaves. The disease surveys at the six locations revealed 1–90% of diseased leaves of the plants. Phoma sp. was dominantly isolated from the diseased leaf lesions. Seven single-spore isolates of the fungus were selected and identified as Didymella ligulariae by investigation of their cultural, morphological, and molecular characteristics. Artificial inoculation test to Fischer's ragwort leaves was conducted with three isolates of D. ligulariae. The inoculation test revealed that the tested isolates cause leaf spot symptoms in the plants similar to the natural ones. The fungal pathogen has never been reported to cause leaf spot in Fischer's ragwort. Leaf spot of Fischer's ragwort caused by D. ligulariae is first reported in this study.
    Keywords fischer's ragwort ; leaf spot ; Agriculture (General) ; S1-972
    Language English
    Publishing date 2023-03-01T00:00:00Z
    Publisher Hanrimwon Publishing Company
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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