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  1. Artikel: Using short-read 16S rRNA sequencing of multiple variable regions to generate high-quality results to a species level.

    Graham, Amy S / Patel, Fadheela / Little, Francesca / van der Kouwe, Andre / Kaba, Mamadou / Holmes, Martha J

    bioRxiv : the preprint server for biology

    2024  

    Abstract: Introduction: Short-read amplicon sequencing studies have typically focused on 1-2 variable regions of the 16S rRNA gene. Species-level resolution is limited in these studies, as each variable region enables the characterisation of a different ... ...

    Abstract Introduction: Short-read amplicon sequencing studies have typically focused on 1-2 variable regions of the 16S rRNA gene. Species-level resolution is limited in these studies, as each variable region enables the characterisation of a different subsection of the microbiome. Although long-read sequencing techniques take advantage of all 9 variable regions by sequencing the entire 16S rRNA gene, they are substantially more expensive. This work assessed the feasibility of accurate species-level resolution and reproducibility using a relatively new sequencing kit and bioinformatics pipeline developed for short-read sequencing of multiple variable regions of the 16S rRNA gene. In addition, we evaluated the potential impact of different sample collection methods on our outcomes.
    Methods: Using xGen
    Results: Using multiple variable regions of the 16S ribosomal Ribonucleic Acid (rRNA) gene, we found that we could accurately identify taxa to a species level and obtain highly reproducible results at a species level. Yet, the microbial profiles of stool and rectal swab sample pairs differed substantially despite being collected concurrently from the same infants.
    Conclusion: This protocol provides an effective means for studying infant gut microbial samples at a species level. However, sample collection approaches need to be accounted for in any downstream analysis.
    Sprache Englisch
    Erscheinungsdatum 2024-05-13
    Erscheinungsland United States
    Dokumenttyp Preprint
    DOI 10.1101/2024.05.13.591068
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  2. Artikel ; Online: Carbapenem-resistant

    Marais, Gert / Moodley, Clinton / Claassen-Weitz, Shantelle / Patel, Fadheela / Prentice, Elizabeth / Tootla, Hafsah / Nyakutira, Nyasha / Lennard, Katie / Reddy, Kessendri / Bamford, Colleen / Niehaus, Abraham / Whitelaw, Andrew / Brink, Adrian

    JAC-antimicrobial resistance

    2024  Band 6, Heft 2, Seite(n) dlae050

    Abstract: Background: The molecular epidemiology of carbapenem-resistant Enterobacterales in Cape Town remains largely unknown.: Objectives: This study aimed to describe the molecular epidemiology, resistome, virulome and mobilome of carbapenem-resistant : ... ...

    Abstract Background: The molecular epidemiology of carbapenem-resistant Enterobacterales in Cape Town remains largely unknown.
    Objectives: This study aimed to describe the molecular epidemiology, resistome, virulome and mobilome of carbapenem-resistant
    Methods: Eighty-five CRKP isolates from hospitalized patients underwent WGS as part of a prospective, multicentre, cross-sectional study, conducted between 1 November 2020 and 30 November 2022, across public-sector and private-sector hospitals in Cape Town, South Africa.
    Results: MLST revealed three novel types, ST6785, ST6786 and ST6787, while the most common were ST219, ST307, ST17, ST13 and ST2497. Different predominant clones were noted in each hospital. The most common carbapenemase gene was
    Conclusions: CRKP epidemiology in Cape Town reflects institutionally dominant, rather than regional, clones. The most prevalent carbapenemase gene was
    Sprache Englisch
    Erscheinungsdatum 2024-03-25
    Erscheinungsland England
    Dokumenttyp Journal Article ; Comment
    ISSN 2632-1823
    ISSN (online) 2632-1823
    DOI 10.1093/jacamr/dlae050
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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