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  1. AU="Verhasselt, Hedda L"
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  1. Article ; Online: COVID-19 Co-infection with Legionella pneumophila in 2 Tertiary-Care Hospitals, Germany.

    Verhasselt, Hedda L / Buer, Jan / Dedy, Jutta / Ziegler, Renate / Steinmann, Joerg / Herbstreit, Frank / Brenner, Thorsten / Rath, Peter-Michael

    Emerging infectious diseases

    2021  Volume 27, Issue 5, Page(s) 1535–1537

    Abstract: We describe screening results for detection of co-infections with Legionella pneumophila in patients infected with severe acute respiratory syndrome coronavirus 2. In total, 93 patients were tested; 1 was positive (1.1%) for L. pneumophila serogroup 1. ... ...

    Abstract We describe screening results for detection of co-infections with Legionella pneumophila in patients infected with severe acute respiratory syndrome coronavirus 2. In total, 93 patients were tested; 1 was positive (1.1%) for L. pneumophila serogroup 1. Co-infections with L. pneumophila occur in coronavirus disease patients and should not be missed.
    MeSH term(s) COVID-19 ; Coinfection ; Germany/epidemiology ; Humans ; Legionella pneumophila ; SARS-CoV-2 ; Tertiary Care Centers
    Language English
    Publishing date 2021-04-26
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1380686-5
    ISSN 1080-6059 ; 1080-6040
    ISSN (online) 1080-6059
    ISSN 1080-6040
    DOI 10.3201/eid2705.203388
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 4778: Show issues Location:
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  2. Article ; Online: Multiple colony antifungal susceptibility testing detects polyresistance in clinical Candida cultures: a European Confederation of Medical Mycology excellence centers study.

    Knoll, Miriam A / Lackner, Nina / Ulmer, Hanno / Samardzic, Eldina / Steinmann, Joerg / Krause, Robert / Verhasselt, Hedda L / Rath, Peter-Michael / Fuchs, Frieder / Koehler, Philipp / Denis, Blandine / Hamane, Samia / Alanio, Alexandre / Lass-Flörl, Cornelia

    Clinical microbiology and infection : the official publication of the European Society of Clinical Microbiology and Infectious Diseases

    2022  Volume 28, Issue 9, Page(s) 1288.e1–1288.e7

    Abstract: Objectives: Many factors influence the outcome of in vitro antifungal susceptibility testing (AFST), including endpoint definition, inoculum sizes, time and temperature of incubation, and growth medium used. This European Confederation of Medical ... ...

    Abstract Objectives: Many factors influence the outcome of in vitro antifungal susceptibility testing (AFST), including endpoint definition, inoculum sizes, time and temperature of incubation, and growth medium used. This European Confederation of Medical Mycology (ECMM) Excellence center driven study investigated multiple colony testing (MCT) of five separate colonies to investigate the prevalence of polyresistance (PR), defined as heterogeneous MICs from a same-species Candida culture irrespective of the underlying resistance mechanism.
    Methods: Candida spp. MCT for fluconazole and anidulafungin was performed by Etest prospectively comprising 405 clinical samples. MCT results were compared to the real-life routine MIC data and PR was assessed. Candida colonies displaying strong PR were selected for genotyping using multilocus sequence typing and random amplified polymorphic DNA assays for C. lusitaniae.
    Results: Candida PR was observed in 33 of 405 samples (8.1%), with higher rates for non-albicans species (26/186, 14%) than for C. albicans (7/219, 3.2%), and for fluconazole than for anidulafungin. MCT detected acquired resistance more often than routine AFST (18/405, 4.5%) and 9 of the 161 investigated blood cultures showed PR (5.6%). Multilocus sequence typing and random amplified polymorphic DNA did not reveal a uniform genetic correlate in strains studied.
    Conclusions: This study shows that Candida single MIC-values obtained in routine diagnostics may be incidental, as they fail to detect PR and resistant subpopulations reliably. The reasons for PR seem to be manifold and should be regarded as a phenotypical expression of genomic variability irrespective of the underlying resistance mechanism, which may help to interpret ambiguous and non-reproducible AFST results.
    MeSH term(s) Anidulafungin ; Antifungal Agents/pharmacology ; Candida/genetics ; Candida albicans ; Drug Resistance, Fungal ; Fluconazole/pharmacology ; Humans ; Microbial Sensitivity Tests ; Mycology
    Chemical Substances Antifungal Agents ; Fluconazole (8VZV102JFY) ; Anidulafungin (9HLM53094I)
    Language English
    Publishing date 2022-05-09
    Publishing country England
    Document type Journal Article
    ZDB-ID 1328418-6
    ISSN 1469-0691 ; 1470-9465 ; 1198-743X
    ISSN (online) 1469-0691
    ISSN 1470-9465 ; 1198-743X
    DOI 10.1016/j.cmi.2022.04.014
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Zs.MO 284: Show issues

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  3. Article ; Online: HIV-Associated Microbial Translocation May Affect Cytokine Production of CD56bright NK Cells via Stimulation of Monocytes.

    ToVinh, Michael / Hörr, Gregor / Hoffmeister, Christoph / Dobrikova, Kristiyana / Gotter, Christina / Raabe, Jan / Kaiser, Kim M / Ahmad, Sarah / Finnemann, Claudia / Matejec, Eyleen / Hack, Gudrun / Bischoff, Jenny / Rieke, Gereon J / Schwarze-Zander, Carolynne / Boesecke, Christoph / van Bremen, Kathrin / Wasmuth, Jan-Christian / Eis-Hübinger, Anna M / Streeck, Hendrik /
    Verhasselt, Hedda L / Oldenburg, Johannes / Strassburg, Christian P / Rockstroh, Jürgen K / Spengler, Ulrich / Krämer, Benjamin / Nattermann, Jacob

    The Journal of infectious diseases

    2022  Volume 227, Issue 4, Page(s) 577–582

    Abstract: The mechanisms involved in HIV-associated natural killer (NK) cell impairment are still incompletely understood. We observed HIV infection to be associated with increased plasma levels of IFABP, a marker for gut epithelial barrier dysfunction, and LBP, a ...

    Abstract The mechanisms involved in HIV-associated natural killer (NK) cell impairment are still incompletely understood. We observed HIV infection to be associated with increased plasma levels of IFABP, a marker for gut epithelial barrier dysfunction, and LBP, a marker for microbial translocation. Both IFABP and LBP plasma concentrations were inversely correlated with NK cell interferon-γ production, suggesting microbial translocation to modulate NK cell functions. Accordingly, we found lipopolysaccharide to have an indirect inhibitory effect on NK cells via triggering monocytes' transforming growth factor-β production. Taken together, our data suggest increased microbial translocation to be involved in HIV-associated NK cell dysfunction.
    MeSH term(s) Humans ; Cytokines ; HIV Infections/metabolism ; HIV Infections/microbiology ; Killer Cells, Natural/metabolism ; Killer Cells, Natural/microbiology ; Killer Cells, Natural/pathology ; Monocytes ; CD56 Antigen ; Intestinal Mucosa/metabolism ; Intestinal Mucosa/pathology
    Chemical Substances Cytokines ; CD56 Antigen ; lipopolysaccharide-binding protein
    Language English
    Publishing date 2022-12-13
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 3019-3
    ISSN 1537-6613 ; 0022-1899
    ISSN (online) 1537-6613
    ISSN 0022-1899
    DOI 10.1093/infdis/jiac485
    Database MEDical Literature Analysis and Retrieval System OnLINE

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