Upregulation of COX-2 and CGRP expression in resident cells of the Borna disease virus-infected brain is dependent upon inflammation.

Abstract:

:Infection of immunocompetent adult rats with Borna disease virus (BDV) causes severe encephalitis and neural dysfunction. The expression of COX-2 and CGRP, genes previously shown to be implicated in CNS disease and peripheral inflammation, was dramatically upregulated in the cortical neurons of acutely BDV-infected rats. Neuronal COX-2 and CGRP upregulation was predominantly seen in brain areas where ED1-positive macrophages/microglia accumulated. In addition, COX-2 expression was strongly induced in brain endothelial cells and the number of COX-2 immunoreactive microglial cells was increased. In contrast, despite increased expression of viral antigens, neither COX-2 nor CGRP expression was altered in the CNS of BDV-infected rats treated with dexamethasone, or tolerant to BDV. Thus, increased CGRP and COX-2 expression in the BDV-infected brain is the result of the inflammatory response and likely to be involved in the pathogenesis of virus-induced encephalitis.

journal_name

Neurobiol Dis

journal_title

Neurobiology of disease

authors

Röhrenbeck AM,Bette M,Hooper DC,Nyberg F,Eiden LE,Dietzschold B,Weihe E

doi

10.1006/nbdi.1998.0225

keywords:

subject

Has Abstract

pub_date

1999-02-01 00:00:00

pages

15-34

issue

1

eissn

0969-9961

issn

1095-953X

pii

S0969-9961(98)90225-X

journal_volume

6

pub_type

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