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http://scihub22266oqcxt.onion/10.1128/JVI.79.18.11716-11723.2005
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  • Borna Disease Virus Replication in Organotypic Hippocampal Slice Cultures from Rats Results in Selective Damage of Dentate Granule Cells #MMPMID16140749
  • Mayer D; Fischer H; Schneider U; Heimrich B; Schwemmle M
  • J Virol 2005[Sep]; 79 (18): 11716-23 PMID16140749garesp_yesshow ga
  • In the hippocampus of Borna disease virus (BDV)-infected newborn rats, dentate granule cells undergo progressive cell death. BDV is noncytolytic, and the pathogenesis of this neurodevelopmental damage in the absence of immunopathology remains unclear. A suitable model system to study early events of the pathology is lacking. We show here that organotypic hippocampal slice cultures from newborn rat pups are a suitable ex vivo model to examine BDV neuropathogenesis. After challenging hippocampal slice cultures with BDV, we observed a progressive loss of calbindin-positive granule cells 21 to 28 days postinfection. This loss was accompanied by reduced numbers of mossy fiber boutons when compared to mock-infected cultures. Similarly, the density of dentate granule cell axons, the mossy fiber axons, appeared to be substantially reduced. In contrast, hilar mossy cells and pyramidal neurons survived, although BDV was detectable in these cells. Despite infection of dentate granule cells 2 weeks postinfection, the axonal projections of these cells and the synaptic connectivity patterns were comparable to those in mock-infected cultures, suggesting that BDV-induced damage of granule cells is a postmaturation event that starts after mossy fiber synapses are formed. In summary, we find that BDV infection of rat organotypic hippocampal slice cultures results in selective neuronal damage similar to that observed with infected newborn rats and is therefore a suitable model to study BDV-induced pathology in the hippocampus.
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    11716 18.79 2005