PMID- 12153529 OWN - NLM STAT- MEDLINE DCOM- 20021009 LR - 20190815 IS - 0953-816X (Print) IS - 0953-816X (Linking) VI - 16 IP - 1 DP - 2002 Jul TI - Intranasal herpes simplex virus type 2 inoculation causes a profound thymidine kinase dependent cerebral inflammatory response in the mouse hindbrain. PG - 29-43 AB - The herpes simplex virus (HSV) has the ability to replicate in the central nervous system (CNS), which may cause fatal encephalitis. The present study investigated the activity of the nuclear factor kappa B (NF-kappa B) and the pattern of cytokine/chemokine gene expression across the brain of HSV-infected mice and the role of the viral thymidine kinase (TK) in mediating these effects. Mice were killed 1-8 days after intranasal inoculation with either HSV-2 TK-competent or TK-deficient clinical isolates. Animals infected with the TK-competent virus exhibited first signs of infection at day 5 postinoculation, whereas severe signs of sickness were observed between day 6 and 8. A robust hybridization signal was found in the brain of these animals for the gene encoding the inhibitory factor kappa B alpha (I kappa B alpha, index of NF-kappa B activity), toll-like receptor 2 (TLR2), tumour necrosis factor alpha (TNF-alpha) and monocyte chemoattractant protein-1 (MCP-1) in numerous regions of the pons and medulla. The levels of expression of these genes increased 4 days after the inoculation and peaked at day 6 within the endothelium of the brain capillaries and cells of myeloid origin. A robust signal for the TK gene and its encoding protein was detected selectively within the regions that exhibited expression of the immune molecules. In contrast, animals that received the TK-deficient virus did not show any signs of sickness or cerebral inflammation or HSV replication within the cerebral tissue. The present data provide clear evidence that HSV-2 has the ability to trigger a profound inflammatory response in a pattern that follows the viral TK-dependent HSV replication in neurons. Such neurovirulence occurring in the hindbrain is proposed here to be directly responsible for neurodegeneration and to lead to the cerebral innate immune response, which in turn could play a key role in fatal HSV-2-induced encephalitis. FAU - Boivin, Guy AU - Boivin G AD - Laboratory of Infectious Diseases, CHUL Research Centre and Laval University, 2705, boul. Laurier, Quebec, G1V 4G Canada. FAU - Coulombe, Zoe AU - Coulombe Z FAU - Rivest, Serge AU - Rivest S LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - France TA - Eur J Neurosci JT - The European journal of neuroscience JID - 8918110 RN - 0 (Chemokine CCL2) RN - 0 (DNA-Binding Proteins) RN - 0 (Drosophila Proteins) RN - 0 (I-kappa B Proteins) RN - 0 (Membrane Glycoproteins) RN - 0 (NF-kappa B) RN - 0 (NFKBIA protein, human) RN - 0 (Nfkbia protein, mouse) RN - 0 (RNA, Messenger) RN - 0 (Receptors, Cell Surface) RN - 0 (Toll-Like Receptor 2) RN - 0 (Toll-Like Receptors) RN - 0 (Tumor Necrosis Factor-alpha) RN - 139874-52-5 (NF-KappaB Inhibitor alpha) RN - 82115-62-6 (Interferon-gamma) RN - EC 2.7.1.21 (Thymidine Kinase) SB - IM MH - Administration, Intranasal MH - Animals MH - Chemokine CCL2/genetics/*metabolism MH - DNA-Binding Proteins/genetics/*metabolism MH - *Drosophila Proteins MH - Female MH - Herpesvirus 2, Human/*pathogenicity MH - *I-kappa B Proteins MH - Immunohistochemistry MH - In Situ Hybridization MH - Inflammation/enzymology/virology MH - Interferon-gamma/metabolism MH - Medulla Oblongata/enzymology/virology MH - Membrane Glycoproteins/metabolism MH - Mice MH - Mice, Inbred BALB C MH - NF-KappaB Inhibitor alpha MH - NF-kappa B/metabolism MH - Pons/enzymology/virology MH - RNA, Messenger/metabolism MH - Receptors, Cell Surface/metabolism MH - Rhombencephalon/*enzymology/*virology MH - Thymidine Kinase/genetics/*metabolism MH - Toll-Like Receptor 2 MH - Toll-Like Receptors MH - Tumor Necrosis Factor-alpha/genetics/*metabolism EDAT- 2002/08/03 10:00 MHDA- 2002/10/10 04:00 CRDT- 2002/08/03 10:00 PHST- 2002/08/03 10:00 [pubmed] PHST- 2002/10/10 04:00 [medline] PHST- 2002/08/03 10:00 [entrez] AID - 2057 [pii] AID - 10.1046/j.1460-9568.2002.02057.x [doi] PST - ppublish SO - Eur J Neurosci. 2002 Jul;16(1):29-43. doi: 10.1046/j.1460-9568.2002.02057.x.