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  1. Artikel: Renal Disease in Persons Infected with Human Immunodeficiency Virus in Korea.

    Choe, Pyoeng Gyun

    Infection & chemotherapy

    2017  Band 49, Heft 3, Seite(n) 238–240

    Sprache Englisch
    Erscheinungsdatum 2017-10-13
    Erscheinungsland Korea (South)
    Dokumenttyp Editorial
    ZDB-ID 2573798-3
    ISSN 2093-2340
    ISSN 2093-2340
    DOI 10.3947/ic.2017.49.3.238
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  2. Artikel ; Online: Preparing the Frontlines: Delivering Special Pathogen Training to Maryland Hospital Staff.

    Sulmonte, Christopher J / Flinn, Jade B / Yusuf, Hasiya / Martin, Elena / Luciano, Nicholas J / Kim, Hyungwoo / Choe, Pyoeng Gyun / Das, Asar / Garibaldi, Brian T / Hynes, Noreen A

    Health security

    2024  Band 22, Heft 1, Seite(n) 65–73

    Abstract: Healthcare workers (HCWs) at community hospitals, also known as frontline hospitals (FLHs), may encounter patients with possible infectious diseases, including those caused by high-consequence pathogens such ... ...

    Abstract Healthcare workers (HCWs) at community hospitals, also known as frontline hospitals (FLHs), may encounter patients with possible infectious diseases, including those caused by high-consequence pathogens such as
    Mesh-Begriff(e) Humans ; Pandemics ; Maryland ; COVID-19 ; Health Personnel ; Personnel, Hospital ; Abnormalities, Multiple ; Growth Disorders ; Heart Septal Defects, Ventricular ; Craniofacial Abnormalities
    Sprache Englisch
    Erscheinungsdatum 2024-01-19
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 2823049-8
    ISSN 2326-5108 ; 2326-5094
    ISSN (online) 2326-5108
    ISSN 2326-5094
    DOI 10.1089/hs.2023.0035
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  3. Artikel ; Online: Anti-SARS-CoV-2 nucleocapsid antibody positivity 3 years after COVID-19.

    Kang, Chang Kyung / Kim, Youngju / Jo, Hyeon Jae / Lee, Chan Mi / Kim, Nam Joong / Lee, Chang-Han / Choe, Pyoeng Gyun / Park, Wan Beom / Oh, Myoung-Don

    Japanese journal of infectious diseases

    2024  

    Abstract: The accurate identification of individuals without prior infection by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is pivotal for seroepidemiological research and vaccine trials. Because of widespread COVID-19 vaccination, the anti- ... ...

    Abstract The accurate identification of individuals without prior infection by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is pivotal for seroepidemiological research and vaccine trials. Because of widespread COVID-19 vaccination, the anti-nucleocapsid antibody continues to serve as a valuable marker for individuals without a history of COVID-19. This study aimed to comprehensively assess anti-nucleocapsid antibody positivity using diverse commercial and in-house immunoassays among individuals who contracted COVID-19 more than 3 years ago. We enrolled 44 participants with laboratory-confirmed COVID-19 between January and May 2020 from Seoul National University Hospital and its community treatment centers. The results showed anti-nucleocapsid antibody positivities ranged from 45.5% to 87.9% depending upon the immunoassay used. The study highlights the importance of considering the limited anti-nucleocapsid antibody positivity in participants with a distant COVID-19 history in seroepidemiological or vaccine research.
    Sprache Englisch
    Erscheinungsdatum 2024-04-30
    Erscheinungsland Japan
    Dokumenttyp Journal Article
    ZDB-ID 1478383-6
    ISSN 1884-2836 ; 1344-6304
    ISSN (online) 1884-2836
    ISSN 1344-6304
    DOI 10.7883/yoken.JJID.2024.011
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  4. Artikel ; Online: Effect of Wearing Personal Protective Equipment (PPE) for COVID-19 Treatment on Blood Culture Contamination: Implication for Optimal PPE Strategies.

    Park, Jae Hyeon / Kim, Taek Soo / Lee, Chan Mi / Kang, Chang Kyung / Park, Wan Beom / Kim, Nam Joong / Choe, Pyoeng Gyun / Oh, Myoung-Don

    Journal of Korean medical science

    2023  Band 38, Heft 23, Seite(n) e180

    Abstract: The personal protective equipment (PPE) used to minimize exposure to hazards can hinder healthcare workers from performing sophisticated procedures. We retrospectively reviewed 77,535 blood cultures (202,012 pairs) performed in 28,502 patients from ... ...

    Abstract The personal protective equipment (PPE) used to minimize exposure to hazards can hinder healthcare workers from performing sophisticated procedures. We retrospectively reviewed 77,535 blood cultures (202,012 pairs) performed in 28,502 patients from January 2020 to April 2022. The contamination rate of all blood cultures was significantly elevated in the coronavirus disease 2019 ward at 4.68%, compared to intensive care units at 2.56%, emergency rooms at 1.13%, hematology wards at 1.08%, and general wards at 1.07% (All of
    Mesh-Begriff(e) Humans ; Blood Culture ; COVID-19 ; COVID-19 Drug Treatment ; Retrospective Studies ; Personal Protective Equipment
    Sprache Englisch
    Erscheinungsdatum 2023-06-12
    Erscheinungsland Korea (South)
    Dokumenttyp Journal Article
    ZDB-ID 639262-3
    ISSN 1598-6357 ; 1011-8934
    ISSN (online) 1598-6357
    ISSN 1011-8934
    DOI 10.3346/jkms.2023.38.e180
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  5. Artikel: Predicting delirium and the effects of medications in hospitalized COVID-19 patients using machine learning: A retrospective study within the Korean Multidisciplinary Cohort for Delirium Prevention (KoMCoDe).

    Lee, So Hee / Hur, Hyun Jung / Kim, Sung Nyun / Ahn, Jang Ho / Ro, Du Hyun / Hong, Arum / Park, Hye Yoon / Choe, Pyoeng Gyun / Kim, Back / Park, Hye Youn

    Digital health

    2024  Band 10, Seite(n) 20552076231223811

    Abstract: Objective: Delirium is commonly reported from the inpatients with Coronavirus disease 2019 (COVID-19) infection. As delirium is closely associated with adverse clinical outcomes, prediction and prevention of delirium is critical. We developed a machine ... ...

    Abstract Objective: Delirium is commonly reported from the inpatients with Coronavirus disease 2019 (COVID-19) infection. As delirium is closely associated with adverse clinical outcomes, prediction and prevention of delirium is critical. We developed a machine learning (ML) model to predict delirium in hospitalized patients with COVID-19 and to identify modifiable factors to prevent delirium.
    Methods: The data set (n = 878) from four medical centers was constructed. Total of 78 predictors were included such as demographic characteristics, vital signs, laboratory results and medication, and the primary outcome was delirium occurrence during hospitalization. For analysis, the extreme gradient boosting (XGBoost) algorithm was applied, and the most influential factors were selected by recursive feature elimination. Among the indicators of performance for ML model, the area under the curve of the receiver operating characteristic (AUROC) curve was selected as the evaluation metric.
    Results: Regarding the performance of developed delirium prediction model, the accuracy, precision, recall, F1 score, and the AUROC were calculated (0.944, 0.581, 0.421, 0.485, 0.873, respectively). The influential factors of delirium in this model included were mechanical ventilation, medication (antipsychotics, sedatives, ambroxol, piperacillin/tazobactam, acetaminophen, ceftriaxone, and propacetamol), and sodium ion concentration (all
    Conclusions: We developed and internally validated an ML model to predict delirium in COVID-19 inpatients. The model identified modifiable factors associated with the development of delirium and could be clinically useful for the prediction and prevention of delirium in COVID-19 inpatients.
    Sprache Englisch
    Erscheinungsdatum 2024-01-05
    Erscheinungsland United States
    Dokumenttyp Journal Article
    ZDB-ID 2819396-9
    ISSN 2055-2076
    ISSN 2055-2076
    DOI 10.1177/20552076231223811
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  6. Artikel ; Online: Risk factors for resistant gram-positive bacteremia in febrile neutropenic patients with cancer.

    Lee, Minkyeong / Lee, Chan Mi / Byun, Ja Min / Shin, Dong-Yeop / Koh, Youngil / Hong, Junshik / Choe, Pyoeng Gyun / Park, Wan Beom / Kim, Nam Joong / Yoon, Sung-Soo / Oh, Myoung-Don / Kang, Chang Kyung / Kim, Inho

    Journal of infection and chemotherapy : official journal of the Japan Society of Chemotherapy

    2024  

    Abstract: Background: Gram-positive bacteria are frequently resistant to empirical beta-lactams in febrile neutropenic patients with cancer. As microbiology and antibiotic susceptibility changes, we reevaluated the risk factors for resistant Gram-positive ... ...

    Abstract Background: Gram-positive bacteria are frequently resistant to empirical beta-lactams in febrile neutropenic patients with cancer. As microbiology and antibiotic susceptibility changes, we reevaluated the risk factors for resistant Gram-positive bacteremia in febrile neutropenic patients with cancer.
    Methods: Episodes of bacteremic febrile neutropenia in Seoul National University Hospital from July 2019 to June 2022 were reviewed. Resistant Gram-positive bacteria were defined as a pathogen susceptible only to glycopeptide or linezolid in vitro (e.g., methicillin-resistant staphylococci, penicillin-resistant viridans streptococci, and ampicillin-resistant enterococci). Episodes were compared to identify independent risk factors for resistant Gram-positive bacteremia.
    Results: Of 225 episodes, 78 (34.7%) involved resistant Gram-positive bacteremia. Multivariate analysis revealed that breakthrough bacteremia while being administered antibiotics (adjusted odds ratio [aOR], 6.794; 95% confidence interval [95% CI], 3.130-14.749; P < 0.001) and catheter-related infection (aOR 4.039, 95% CI 1.366-11.946; P = 0.012) were associated with resistant Gram-positive bacteremia. Chronic liver disease (aOR 0.231, 95% CI 0.059-0.905; P = 0.035) and hypotension at bacteremia (aOR 0.454, 95% CI 0.218-0.945; P = 0.035) were inversely associated with resistant Gram-positive bacteremia.
    Conclusions: Resistant Gram-positive bacteria should be considered in breakthrough bacteremia and catheter-related infection in febrile neutropenic patients with cancer.
    Sprache Englisch
    Erscheinungsdatum 2024-03-20
    Erscheinungsland Netherlands
    Dokumenttyp Journal Article
    ZDB-ID 1355399-9
    ISSN 1437-7780 ; 1341-321X
    ISSN (online) 1437-7780
    ISSN 1341-321X
    DOI 10.1016/j.jiac.2024.03.013
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  7. Artikel ; Online: Predicting delirium and the effects of medications in hospitalized COVID-19 patients using machine learning

    So Hee Lee / Hyun Jung Hur / Sung Nyun Kim / Jang Ho Ahn / Du Hyun Ro / Arum Hong / Hye Yoon Park / Pyoeng Gyun Choe / Back Kim / Hye Youn Park

    Digital Health, Vol

    A retrospective study within the Korean Multidisciplinary Cohort for Delirium Prevention (KoMCoDe)

    2024  Band 10

    Abstract: Objective Delirium is commonly reported from the inpatients with Coronavirus disease 2019 (COVID-19) infection. As delirium is closely associated with adverse clinical outcomes, prediction and prevention of delirium is critical. We developed a machine ... ...

    Abstract Objective Delirium is commonly reported from the inpatients with Coronavirus disease 2019 (COVID-19) infection. As delirium is closely associated with adverse clinical outcomes, prediction and prevention of delirium is critical. We developed a machine learning (ML) model to predict delirium in hospitalized patients with COVID-19 and to identify modifiable factors to prevent delirium. Methods The data set (n = 878) from four medical centers was constructed. Total of 78 predictors were included such as demographic characteristics, vital signs, laboratory results and medication, and the primary outcome was delirium occurrence during hospitalization. For analysis, the extreme gradient boosting (XGBoost) algorithm was applied, and the most influential factors were selected by recursive feature elimination. Among the indicators of performance for ML model, the area under the curve of the receiver operating characteristic (AUROC) curve was selected as the evaluation metric. Results Regarding the performance of developed delirium prediction model, the accuracy, precision, recall, F1 score, and the AUROC were calculated (0.944, 0.581, 0.421, 0.485, 0.873, respectively). The influential factors of delirium in this model included were mechanical ventilation, medication (antipsychotics, sedatives, ambroxol, piperacillin/tazobactam, acetaminophen, ceftriaxone, and propacetamol), and sodium ion concentration (all p < 0.05). Conclusions We developed and internally validated an ML model to predict delirium in COVID-19 inpatients. The model identified modifiable factors associated with the development of delirium and could be clinically useful for the prediction and prevention of delirium in COVID-19 inpatients.
    Schlagwörter Computer applications to medicine. Medical informatics ; R858-859.7
    Sprache Englisch
    Erscheinungsdatum 2024-01-01T00:00:00Z
    Verlag SAGE Publishing
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  8. Artikel ; Online: Clinical outcomes and immunological features of COVID-19 patients receiving B-cell depletion therapy during the Omicron era.

    Lee, Chan Mi / Kim, Minji / Park, Seong-Wook / Kang, Chang Kyung / Choe, Pyoeng Gyun / Kim, Nam Joong / Jo, Hyeon Jae / Shin, Hyun Mu / Lee, Chang-Han / Kim, Hang-Rae / Park, Wan Beom / Oh, Myoung-Don

    Infectious diseases (London, England)

    2023  Band 56, Heft 2, Seite(n) 116–127

    Abstract: Background: ...

    Abstract Background:
    Mesh-Begriff(e) Humans ; B-Lymphocytes ; Retrospective Studies ; COVID-19/therapy ; SARS-CoV-2
    Sprache Englisch
    Erscheinungsdatum 2023-12-18
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 2839775-7
    ISSN 2374-4243 ; 2374-4235
    ISSN (online) 2374-4243
    ISSN 2374-4235
    DOI 10.1080/23744235.2023.2276784
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  9. Artikel ; Online: An ancestral SARS-CoV-2 vaccine induces anti-Omicron variants antibodies by hypermutation.

    Park, Seoryeong / Choi, Jaewon / Lee, Yonghee / Noh, Jinsung / Kim, Namphil / Lee, JinAh / Cho, Geummi / Kim, Sujeong / Yoo, Duck Kyun / Kang, Chang Kyung / Choe, Pyoeng Gyun / Kim, Nam Joong / Park, Wan Beom / Kim, Seungtaek / Oh, Myoung-Don / Kwon, Sunghoon / Chung, Junho

    Nature communications

    2024  Band 15, Heft 1, Seite(n) 3368

    Abstract: The immune escape of Omicron variants significantly subsides by the third dose of an mRNA vaccine. However, it is unclear how Omicron variant-neutralizing antibodies develop under repeated vaccination. We analyze blood samples from 41 BNT162b2 vaccinees ... ...

    Abstract The immune escape of Omicron variants significantly subsides by the third dose of an mRNA vaccine. However, it is unclear how Omicron variant-neutralizing antibodies develop under repeated vaccination. We analyze blood samples from 41 BNT162b2 vaccinees following the course of three injections and analyze their B-cell receptor (BCR) repertoires at six time points in total. The concomitant reactivity to both ancestral and Omicron receptor-binding domain (RBD) is achieved by a limited number of BCR clonotypes depending on the accumulation of somatic hypermutation (SHM) after the third dose. Our findings suggest that SHM accumulation in the BCR space to broaden its specificity for unseen antigens is a counterprotective mechanism against virus variant immune escape.
    Mesh-Begriff(e) Humans ; COVID-19 Vaccines ; BNT162 Vaccine ; COVID-19/prevention & control ; SARS-CoV-2/genetics ; Antibodies, Neutralizing ; Antibodies, Viral
    Chemische Substanzen COVID-19 Vaccines ; BNT162 Vaccine ; Antibodies, Neutralizing ; Antibodies, Viral
    Sprache Englisch
    Erscheinungsdatum 2024-04-20
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 2553671-0
    ISSN 2041-1723 ; 2041-1723
    ISSN (online) 2041-1723
    ISSN 2041-1723
    DOI 10.1038/s41467-024-47743-1
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  10. Artikel ; Online: Kinetics of Neutralizing Antibody Responses Against SARS-CoV-2 Delta Variant in Patients Infected at the Beginning of the Pandemic.

    Choe, Pyoeng Gyun / Kim, Yuri / Chang, Euijin / Kang, Chang Kyung / Kim, Nam Joong / Cho, Nam-Hyuk / Park, Wan Beom / Oh, Myoung-Don

    Journal of Korean medical science

    2022  Band 37, Heft 8, Seite(n) e67

    Abstract: We investigated the kinetics of the neutralizing antibody responses to the severe acute respiratory syndrome-coronavirus-2 delta variant over the course of 1 year in 16 patients infected at the beginning of the pandemic. In patients with severe disease, ... ...

    Abstract We investigated the kinetics of the neutralizing antibody responses to the severe acute respiratory syndrome-coronavirus-2 delta variant over the course of 1 year in 16 patients infected at the beginning of the pandemic. In patients with severe disease, neutralizing responses to the delta variant were detectable, albeit at lower levels than responses to the wild type. Neutralizing responses to the delta variant were undetectable, however, in asymptomatic persons. This finding implies that the vaccination strategy for persons with past natural infection should depend on the severity of the previous infection.
    Mesh-Begriff(e) Adult ; Aged ; Antibodies, Neutralizing/blood ; Antibodies, Viral/blood ; COVID-19/immunology ; COVID-19/prevention & control ; COVID-19 Vaccines/immunology ; Female ; Humans ; Kinetics ; Male ; Middle Aged ; SARS-CoV-2/immunology ; Severity of Illness Index ; Vaccination ; Young Adult
    Chemische Substanzen Antibodies, Neutralizing ; Antibodies, Viral ; COVID-19 Vaccines
    Sprache Englisch
    Erscheinungsdatum 2022-02-28
    Erscheinungsland Korea (South)
    Dokumenttyp Journal Article
    ZDB-ID 639262-3
    ISSN 1598-6357 ; 1011-8934
    ISSN (online) 1598-6357
    ISSN 1011-8934
    DOI 10.3346/jkms.2022.37.e67
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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