Reduction of prion infectivity in packed red blood cellsReportar como inadecuado




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Resumen

The link between a new variant form of Creutzfeldt-Jakob disease vCJD and the consumption of prion contaminated cattle meat as well as recent findings showing that vCJD can be transmitted by blood transfusion have raised public health concerns. Currently, a reliable test to identify prions in blood samples is not available. The purpose of this study was to evaluate the possibility to remove scrapie prion protein PrPSc and infectivity from red blood cell RBC suspensions by a simple washing procedure using a cell separation and washing device. The extent of prion removal was assessed by Western blot, PMCA and infectivity bioassays. Our results revealed a substantial removal of infectious prions >= 3 logs of infectivity by all techniques used. These data suggest that a significant amount of infectivity present in RBC preparations can be removed by a simple washing procedure. This technology may lead to increased safety of blood products and reduce the risk of further propagation of prion diseases.



Autor: Morales, Rodrigo; - Buytaert-Hoefen, Kimberley A.; - González Romero, Dennisse; - Castilla, Joaquín; - Hansen, Eric T.; - Hlavi

Fuente: http://repositorio.uchile.cl/



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