Abstract：
:In this study we showed that the virulent Moscow strain of Ectromelia virus (ECTV-MOS) infection leads to induction of apoptosis in the BALB/c mouse central nervous system. ECTV-MOS-infected cells and inflammation sites were found in brain parenchyma between 5 and 15 days after footpad infection with ECTV-MOS. Infected cells consisted of microglia and monocytes, astrocytes and oligodendrocytes and these type of cells underwent apoptosis within 5-15 days post infection (d.p.i.). The highest number of apoptotic cells was found at 5 and 10 d.p.i. and represented mainly microglia (61.4% and 38.6% of apoptotic cells, respectively) and astrocytes (21% and 8.9%, respectively). The number of apoptotic oligodendrocytes was 5.4% and 4.5%, respectively. Fluorometric assays demonstrated involvement of caspase-1, -3 and -8 but not caspase-9 in apoptosis in ECTV-MOS-infected mouse brains. Expression of Fas/FasL was significantly increased on ECTV-MOS-infected cells between 5 and 15 d.p.i., whereas Fas was up-regulated also on the surrounding, non-infected cells. Taking together we may conclude that ECTV-MOS infection of microglia and astrocytes leads to local inflammation resulting in Fas/FasL up-regulation and apoptosis, which limits mouse central nervous system infection with ECTV-MOS.
journal_name
Virus Resjournal_title
Virus researchauthors
Krzyzowska M,Cymerys J,Winnicka A,Niemiałtowski Mdoi
10.1016/j.virusres.2005.08.001subject
Has Abstractpub_date
2006-02-01 00:00:00pages
141-9issue
2eissn
0168-1702issn
1872-7492pii
S0168-1702(05)00240-6journal_volume
115pub_type
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