Detection and quantitation of cellularly derived amyloid beta peptides by immunoprecipitation-HPLC-MS
- PMID: 9688584
- DOI: 10.1016/s0014-5793(98)00706-6
Detection and quantitation of cellularly derived amyloid beta peptides by immunoprecipitation-HPLC-MS
Abstract
A quantitative method for detection of amyloid beta peptides using immunoprecipitation-HPLC-mass spectrometry (IP-LC-MS) is described. Comparison of IP-LC-MS with sandwich ELISA revealed comparable results in the analysis of A beta 1-40 and A beta 1-42 derived from fetal guinea pig cell media and cell lysates. The use of IP-LC-MS not only allows a quantitative method for A beta 1-40 and A beta 1-42 peptides present in Alzheimer's disease (AD), but allows detection of other A beta peptide species that may also play a role in the onset of AD in humans.
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