Colloidal gold-based immunochromatographic assay for the quantitative detection of S100B in serum samples

Traumatic mind damage has develop into a critical public well being downside. Well timed detection, analysis and remedy of mind damage are intently associated to the prognosis of sufferers, so identification of extremely delicate and particular biochemical markers of mind damage has essential medical worth. Presently, essentially the most studied and most promising marker is the protein S100B. On this research, a fast quantitative assay for S100B was established utilizing colloidal gold labeling and double antibody (8C10-6B8) sandwich immunochromatography. The assay was able to quantifying S100B inside 15 min, and confirmed no cross-reactivity with S100A, NSE, GFAP, or PGP9.5. The detection restrict was decided to be 5 pg/mL with a linear vary of 0.005–100 ng/mL. Restoration experiments additionally indicated that the strategy had an appropriate accuracy. Furthermore, the quantitative colloidal gold assay correlated properly with the outcomes of a chemiluminescence immunoassay when testing 40 medical serum samples. Our developed colloidal gold quantitative immunochromatographic assay is a fast, delicate, particular and correct technique for the detection of S100B protein in serum, which is beneficial within the clinic for early analysis, in addition to evaluation of illness development and prognosis of traumatic mind damage.

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