Induction of cyclooxygenase-2 expression during HIV-1-infected monocyte-derived macrophage and human brain microvascular endothelial cell interactions.

Abstract:

:Human immunodeficiency virus type-1 (HIV-1)-associated dementia (HAD) is a neurodegenerative disease characterized by HIV infection and replication in brain tissue. HIV-1-infected monocytes overexpress inflammatory molecules that facilitate their entry into the brain. Prostanoids are lipid mediators of inflammation that result from cyclooxygenase-2 (COX-2) activity. Because COX-2 is normally induced during inflammatory processes, the aim of this study was to investigate whether COX-2 expression is up-regulated during monocyte-brain endothelium interactions. In vitro cocultures of HIV-infected macrophages and brain endothelium showed an up-regulation of COX-2 expression by both cell types. This up-regulation occurs via an interleukin-1beta (IL1beta)-dependent mechanism in macrophages and via an IL-1beta-independent mechanism in endothelial cells. Thus, interactions between HIV-infected monocytes and brain endothelium result in COX-2 expression and, as such, might contribute to the neuropathogenesis of HIV infection.

journal_name

J Leukoc Biol

authors

Pereira CF,Boven LA,Middel J,Verhoef J,Nottet HS

subject

Has Abstract

pub_date

2000-09-01 00:00:00

pages

423-8

issue

3

eissn

0741-5400

issn

1938-3673

journal_volume

68

pub_type

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