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  1. Article ; Online: Development of a membrane-disruption assay using phospholipid vesicles as a proxy for the detection of cellular membrane degradation.

    Bittenbinder, Mátyás A / Wachtel, Eric / Pereira, Daniel Da Costa / Slagboom, Julien / Casewell, Nicholas R / Jennings, Paul / Kool, Jeroen / Vonk, Freek J

    Toxicon: X

    2024  Volume 22, Page(s) 100197

    Abstract: Snakebite envenoming is a global health issue that affects millions of people worldwide, and that causes morbidity rates surpassing 450,000 individuals annually. Patients suffering from snakebite morbidities may experience permanent disabilities such as ... ...

    Abstract Snakebite envenoming is a global health issue that affects millions of people worldwide, and that causes morbidity rates surpassing 450,000 individuals annually. Patients suffering from snakebite morbidities may experience permanent disabilities such as pain, blindness and amputations. The (local) tissue damage that causes these life-long morbidities is the result of cell- and tissue-damaging toxins present in the venoms. These compounds belong to a variety of toxin classes and may affect cells in various ways, for example, by affecting the cell membrane. In this study, we have developed a high-throughput
    Language English
    Publishing date 2024-04-07
    Publishing country England
    Document type Journal Article
    ISSN 2590-1710
    ISSN (online) 2590-1710
    DOI 10.1016/j.toxcx.2024.100197
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Application of an Extracellular Matrix-Mimicking Fluorescent Polymer for the Detection of Proteolytic Venom Toxins.

    Wachtel, Eric / Bittenbinder, Matyas A / van de Velde, Bas / Slagboom, Julien / de Monts de Savasse, Axel / Alonso, Luis L / Casewell, Nicholas R / Vonk, Freek J / Kool, Jeroen

    Toxins

    2023  Volume 15, Issue 4

    Abstract: The cytotoxicity caused by snake venoms is a serious medical problem that greatly contributes to the morbidity observed in snakebite patients. The cytotoxic components found in snake venoms belong to a variety of toxin classes and may cause cytotoxic ... ...

    Abstract The cytotoxicity caused by snake venoms is a serious medical problem that greatly contributes to the morbidity observed in snakebite patients. The cytotoxic components found in snake venoms belong to a variety of toxin classes and may cause cytotoxic effects by targeting a range of molecular structures, including cellular membranes, the extracellular matrix (ECM) and the cytoskeleton. Here, we present a high-throughput assay (384-well plate) that monitors ECM degradation by snake venom toxins via the application of fluorescent versions of model ECM substrates, specifically gelatin and collagen type I. Both crude venoms and fractionated toxins of a selection of medically relevant viperid and elapid species, separated via size-exclusion chromatography, were studied using the self-quenching, fluorescently labelled ECM-polymer substrates. The viperid venoms showed significantly higher proteolytic degradation when compared to elapid venoms, although the venoms with higher snake venom metalloproteinase content did not necessarily exhibit stronger substrate degradation than those with a lower one. Gelatin was generally more readily cleaved than collagen type I. In the viperid venoms, which were subjected to fractionation by SEC, two (
    MeSH term(s) Humans ; Collagen Type I ; Gelatin ; Snake Venoms/chemistry ; Toxins, Biological ; Snake Bites ; Elapid Venoms/chemistry ; Metalloproteases ; Extracellular Matrix
    Chemical Substances Collagen Type I ; Gelatin (9000-70-8) ; Snake Venoms ; Toxins, Biological ; Elapid Venoms ; Metalloproteases (EC 3.4.-)
    Language English
    Publishing date 2023-04-18
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2518395-3
    ISSN 2072-6651 ; 2072-6651
    ISSN (online) 2072-6651
    ISSN 2072-6651
    DOI 10.3390/toxins15040294
    Database MEDical Literature Analysis and Retrieval System OnLINE

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