PMID- 15689362 OWN - NLM STAT- MEDLINE DCOM- 20050420 LR - 20220310 IS - 1460-2156 (Electronic) IS - 0006-8950 (Linking) VI - 128 IP - Pt 4 DP - 2005 Apr TI - Involvement of monocyte chemoattractant protein-1, macrophage inflammatory protein-1alpha and interleukin-1beta in Wallerian degeneration. PG - 854-66 AB - Wallerian degeneration in the CNS and PNS consists of degradation and phagocytosis of axons and their myelin sheath distal to the site of injury. This process of degeneration, which requires an effective macrophage response, occurs rapidly in peripheral nerves but is slow in the CNS. Rapid Wallerian degeneration in peripheral nerves may contribute to subsequent axonal regeneration. We show that there is a marked increase in mRNA expression of three pro-inflammatory molecules, the chemokines monocyte chemoattractant protein-1 (MCP-1) and macrophage inflammatory protein-1alpha (MIP-1alpha), and the cytokine interleukin-1beta (IL-1beta), in the mouse sciatic nerve but not in the spinal cord undergoing Wallerian degeneration. Neutralizing MCP-1, MIP-1alpha and IL-1beta in the lesioned sciatic nerve with function-blocking antibodies suppressed macrophage responses and myelin clearance. Injecting recombinant MCP-1, MIP-1alpha or IL-1beta into the normal, uninjured spinal cord triggered the expression of a number of chemokines and cytokines. Furthermore, injecting recombinant MCP-1/MIP-1alpha or IL-1beta into the dorsal column of the spinal cord undergoing Wallerian degeneration triggered rapid macrophage/microglial activation and myelin clearance. These findings provide direct evidence that MCP-1, MIP-1alpha and IL-1beta are important regulators of macrophage responses that lead to rapid myelin breakdown and clearance in Wallerian degeneration. FAU - Perrin, Florence E AU - Perrin FE AD - Centre for Research in Neuroscience, McGill University Health Center, Montreal, Quebec, Canada. FAU - Lacroix, Steve AU - Lacroix S FAU - Aviles-Trigueros, Marcelino AU - Aviles-Trigueros M FAU - David, Samuel AU - David S LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20050202 PL - England TA - Brain JT - Brain : a journal of neurology JID - 0372537 RN - 0 (Chemokine CCL2) RN - 0 (Chemokine CCL3) RN - 0 (Chemokine CCL4) RN - 0 (Cytokines) RN - 0 (Interleukin-1) RN - 0 (Macrophage Inflammatory Proteins) RN - 0 (RNA, Messenger) RN - 0 (Recombinant Proteins) SB - IM MH - Animals MH - Chemokine CCL2/physiology MH - Chemokine CCL3 MH - Chemokine CCL4 MH - Cytokines/genetics/*physiology MH - Female MH - Gene Expression MH - Interleukin-1/physiology MH - Macrophage Activation/drug effects MH - Macrophage Inflammatory Proteins/physiology MH - Mice MH - Mice, Inbred BALB C MH - Microinjections MH - Microscopy, Electron MH - Myelin Sheath/metabolism MH - Phagocytosis/drug effects MH - RNA, Messenger/genetics MH - Recombinant Proteins/pharmacology MH - Sciatic Nerve/immunology/injuries/ultrastructure MH - Spinal Cord Injuries/complications/*metabolism/pathology MH - Wallerian Degeneration/etiology/*metabolism/pathology EDAT- 2005/02/04 09:00 MHDA- 2005/04/21 09:00 CRDT- 2005/02/04 09:00 PHST- 2005/02/04 09:00 [pubmed] PHST- 2005/04/21 09:00 [medline] PHST- 2005/02/04 09:00 [entrez] AID - awh407 [pii] AID - 10.1093/brain/awh407 [doi] PST - ppublish SO - Brain. 2005 Apr;128(Pt 4):854-66. doi: 10.1093/brain/awh407. Epub 2005 Feb 2.