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- W4313355087 abstract "Abstract The most severe clinical complication of Plasmodium falciparum infection is cerebral malaria (CM). Plasmodium berghei ANKA (PbA) infection of C57BL/6 mice is an established model of CM. Previous work has implied a role for CD8 T cells and perforin expression in fatal stages of PbA infection. We therefore infected C57BL/6 and C57BL/6 Perforin-/- mice with PbA and assessed the CNS for cerebral endothelial cell blood-brain barrier (BBB) disruption using FITC albumin leakage into tissue, confocal microscopy and 3D volumetric T2 and T1 gadolinium enhanced MRI. PbA infected C57BL/6 mice: 1.) had extensive disruption of BBB tight junction proteins Occludin and Claudin 5, 2.) developed severe CNS vascular permeability of FITC albumin and gadolinium leakage, and 3.) became moribund. We also observed increased VEGF cytokine expression coinciding with CNS vascular permeability in these animals. Despite having similar CD8 T cell infiltration into the brain, PbA infected C57BL/6 Perforin-/- mice had intact BBB tight junction, were devoid of CNS vascular permeability, presented with normal brain MRI, and had normal behavioral scores on the rotarod assay. This study is therefore the first to demonstrate the critical importance of perforin expression in promoting BBB tight junction alteration during PbA infection. Therefore, development of therapies to block factors related perforin mediated delivery could have significant benefit to the treatment of CM." @default.
- W4313355087 created "2023-01-06" @default.
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- W4313355087 date "2013-05-01" @default.
- W4313355087 modified "2023-10-18" @default.
- W4313355087 title "Perforin expression is required for fatal blood-brain barrier disruption in the <i>Plasmodium berghei</i> ANKA model of cerebral malaria (P3061)" @default.
- W4313355087 doi "https://doi.org/10.4049/jimmunol.190.supp.187.6" @default.
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