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Isolation and quantification of blood apoptotic bodies in neurological patients

Serrano de las Heras, G.; Diaz-Maroto, I.; Carrion, B.; Perona-Moratalla, A. B.; Gracia, J.; Arteaga, S.; Hernandez-Fernandez, F.; Garcia-Garcia, J.; Castro-Robles, B.; Ayo-Martin, O.; Segura, T.

2019-09-13 neuroscience
10.1101/757872 bioRxiv
Show abstract

Dysregulation of apoptosis may contribute to the etiology and/or progression of several prevalent diseases, including stroke and neurodegenerative pathologies. So, detection of the apoptotic processes in patients would be useful in daily clinical practice, However, the in vivo analysis of apoptosis that occurs in tissue has limitations. We therefore propose to use circulating apoptotic bodies as biomarkers for measuring apoptotic death in patients. Since there is no scientific literature establishing the most appropriate method for measuring apoptotic bodies from human blood samples, we here describe a reproducible centrifugation-based method combined with electron microscopy, dynamic light scattering and flow cytometry studies to isolate, characterize and quantify plasma apoptotic bodies of patients with ischemic stroke, multiple sclerosis and Parkinsons disease. The analysis revealed that our isolation protocol achieves notable recovery rates of highly-purified intact apoptotic bodies. This easy and rapid procedure would help physicians to implement the use of plasma apoptotic bodies analysis as a non-invasive tool to monitor apoptotic death in neurological patients for prognostic purposes and for following disease activity and assessing drug effectiveness.

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