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Bioanalytical Challenge

LC–MS/MS quantification of asymmetric dimethyl arginine and symmetric dimethyl arginine in plasma using surrogate matrix and derivatization with fluorescamine

    Venkatraman Junnotula

    *Author for correspondence: Tel.: +16109177902;

    E-mail Address: venkatraman.x.junnotula@gsk.com

    Bioanalysis, Immunogenecity & Biomarkers, IVIVT, GlaxoSmithkline Pharmaceuticals, 1250 S. Collegeville Road, Collegeville, PA 19426, USA

    ,
    Barry R Jones

    Q Solutions, 19 Brown Road, Ithaca, NY 14850, USA

    ,
    Shelby Gorman

    Clinical Biomarkers & Translational Research, Oncology Research & Development, Glaxosmithkline Pharmaceuticals, 1250 S. Collegeville Road, Collegeville, PA 19426, USA

    ,
    Miaoqing Shen

    Q Solutions, 19 Brown Road, Ithaca, NY 14850, USA

    &
    Daniel Mulvana

    Q Solutions, 19 Brown Road, Ithaca, NY 14850, USA

    Published Online:https://doi.org/10.4155/bio-2020-0223

    Aim: A novel LC–MS/MS method using a surrogate matrix and derivatization with fluorescamine was developed and validated for simultaneous quantification of asymmetric dimethyl arginine and symmetric dimethyl arginine. Methods & results: Asymmetric dimethyl arginine, symmetric dimethyl arginine and corresponding internal standards were extracted using protein precipitation and derivatization with fluorescamine followed by SPE. Derivatives were analyzed by turbo ion spray LC–MS/MS in the positive ion mode. Methodology was successfully transferred across multiple preclinical species and utilized in the support of several investigative studies. Conclusion: A new LC–MS/MS analytical methodology that utilizes a surrogate matrix and derivatization with fluorescamine was successfully developed and validated.

    Papers of special note have been highlighted as: • of interest

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