PMID- 15886005 OWN - NLM STAT- MEDLINE DCOM- 20060123 LR - 20070813 IS - 0969-9961 (Print) IS - 0969-9961 (Linking) VI - 20 IP - 2 DP - 2005 Nov TI - MCP-1 and murine prion disease: separation of early behavioural dysfunction from overt clinical disease. PG - 283-95 AB - Prion diseases are chronic, fatal neurodegenerative conditions of the CNS. We have investigated the role of monocyte chemoattractant protein-1 (MCP-1) in the ME7 model of murine prion disease. MCP-1 expression increased in the CNS throughout disease progression and was positively correlated with microglial activation. We subsequently compared the inflammatory response, pathology and behavioural changes in wild-type (wt) mice and MCP-1 knockout mice (MCP-1-/-) inoculated with ME7. Late-stage clinical signs were delayed by 4 weeks in MCP-1-/- mice, and survival time increased by 2-3 weeks. By contrast, early changes in affective behaviours and locomotor activity were not delayed in onset. There was also no difference in microglial activation or neuronal death in the hippocampus and thalamus of wt mice and MCP-1-/- mice. These results highlight an important dissociation between prolonged survival, early behavioural dysfunction and hippocampal/thalamic pathology when considering therapeutic intervention for human prion diseases and other chronic neurodegenerative conditions. FAU - Felton, L M AU - Felton LM AD - CNS Inflammation Group, School of Biological Sciences, University of Southampton, Southampton, SO16 7PX, UK. lmf1@soton.ac.uk FAU - Cunningham, C AU - Cunningham C FAU - Rankine, E L AU - Rankine EL FAU - Waters, S AU - Waters S FAU - Boche, D AU - Boche D FAU - Perry, V H AU - Perry VH LA - eng GR - Wellcome Trust/United Kingdom PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Neurobiol Dis JT - Neurobiology of disease JID - 9500169 RN - 0 (Ccl2 protein, mouse) RN - 0 (Chemokine CCL2) RN - 0 (PrPSc Proteins) SB - IM MH - Animals MH - Behavior, Animal/physiology MH - Cell Death/genetics MH - Chemokine CCL2/*genetics MH - Disease Models, Animal MH - Encephalitis/genetics/*metabolism/physiopathology MH - Female MH - Gliosis/genetics/*metabolism/physiopathology MH - Hippocampus/metabolism/pathology/physiopathology MH - Mice MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Microglia/*metabolism MH - Nerve Degeneration/genetics/*metabolism/physiopathology MH - PrPSc Proteins/toxicity MH - Prion Diseases/genetics/*metabolism/physiopathology MH - Survival Rate MH - Thalamus/metabolism/pathology/physiopathology EDAT- 2005/05/12 09:00 MHDA- 2006/01/24 09:00 CRDT- 2005/05/12 09:00 PHST- 2005/01/27 00:00 [received] PHST- 2005/03/08 00:00 [revised] PHST- 2005/03/13 00:00 [accepted] PHST- 2005/05/12 09:00 [pubmed] PHST- 2006/01/24 09:00 [medline] PHST- 2005/05/12 09:00 [entrez] AID - S0969-9961(05)00084-7 [pii] AID - 10.1016/j.nbd.2005.03.008 [doi] PST - ppublish SO - Neurobiol Dis. 2005 Nov;20(2):283-95. doi: 10.1016/j.nbd.2005.03.008.