ArticleMethods in molecular biology (Clifton, N.J.)2022
Multiplex Lysosomal Enzyme Activity Assay on Dried Blood Spots Using Tandem Mass Spectrometry.
Article in Methods in molecular biology (Clifton, N.J.), 2022. 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
Deficiencies of the enzymes in lysosomes result in the accumulation of undegraded materials and subsequently cellular dysfunction. Early identification of deficiencies can lead to better clinical outcomes before irreversible organ and tissue damages occur. In this chapter, lysosomal enzymes are extracted from dried blood spots and incubated with the commercialized and multiplexed enzyme cocktail containing corresponding substrates and internal standards. After incubation, the enzymatic reactions are quenched, and the mixtures of the reaction products are prepared using liquid/liquid extractions. Multiple enzymes are quantified simultaneously using selected ion monitoring on liquid chromatography-mass spectrometry (LC-MS/MS) system.
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