ArticleMikrochimica acta2025
Determination of insulin with ultra-performance liquid chromatography tandem mass spectrometry enhanced by Mg-based micromotors.
Article in Mikrochimica acta, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
An active drug delivery vector of Mg-based micromotor is proposed for enhanced intestinal drug mass spectrometry (MS) detection from proof of concept. Taking diabetes as a disease model, insulin nanoparticles (Ins-NPs) were successfully loaded in chitosan (CHI) layer of Mg-based micromotor (Mg/Au/PLGA/CHI@Ins-NPs) due to electrostatic adsorption with PLGA. The penetration ability of micromotors was evaluated on artificial mucin, which is distributed within about 300 μm of the mucus. In addition, in vitro drug delivery and retention was carried out on the isolated small intestine of mice; then, the insulin molecule was determined by ultra-performance liquid chromatography-mass spectrometry (UPLC-MS). By overcoming the mucus barrier and enhancing retention in intestine through active transport of micromotor, insulin ions at m/z 963.9443, 1156.3287, and 1445.1592 were detected by UPLC-MS and classified as [Insulin + 6H]
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