PMID- 11600888 OWN - NLM STAT- MEDLINE DCOM- 20011207 LR - 20220321 IS - 1097-6256 (Print) IS - 1097-6256 (Linking) VI - 4 IP - 11 DP - 2001 Nov TI - TNF alpha promotes proliferation of oligodendrocyte progenitors and remyelination. PG - 1116-22 AB - Here we used mice lacking tumor necrosis factor-alpha (TNF alpha) and its associated receptors to study a model of demyelination and remyelination in which these events could be carefully controlled using a toxin, cuprizone. Unexpectedly, the lack of TNF alpha led to a significant delay in remyelination as assessed by histology, immunohistochemistry for myelin proteins and electron microscopy coupled with morphometric analysis. Failure of repair correlated with a reduction in the pool of proliferating oligodendrocyte progenitors (bromodeoxyuridine-labeled NG2(+) cells) followed by a reduction in the number of mature oligodendrocytes. Analysis of mice lacking TNF receptor 1 (TNFR1) or TNFR2 indicated that TNFR2, not TNFR1, is critical to oligodendrocyte regeneration. This unexpected reparative role for TNF alpha in the CNS is important for understanding oligodendrocyte regeneration/proliferation, nerve remyelination and the design of new therapeutics for demyelinating diseases. FAU - Arnett, H A AU - Arnett HA AD - Lineberger Comprehensive Cancer Center, School of Medicine CB7295, University of North Carolina, Chapel Hill, North Carolina 27599, USA. FAU - Mason, J AU - Mason J FAU - Marino, M AU - Marino M FAU - Suzuki, K AU - Suzuki K FAU - Matsushima, G K AU - Matsushima GK FAU - Ting, J P AU - Ting JP LA - eng GR - NS34190/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - Nat Neurosci JT - Nature neuroscience JID - 9809671 RN - 0 (Antigens, CD) RN - 0 (Monoamine Oxidase Inhibitors) RN - 0 (Receptors, Tumor Necrosis Factor) RN - 0 (Receptors, Tumor Necrosis Factor, Type I) RN - 0 (Receptors, Tumor Necrosis Factor, Type II) RN - 0 (Tumor Necrosis Factor-alpha) RN - 5N16U7E0AO (Cuprizone) SB - IM MH - Animals MH - Antigens, CD/genetics/*metabolism MH - Apoptosis MH - B-Lymphocytes/metabolism MH - Brain Chemistry MH - Corpus Callosum/metabolism/ultrastructure MH - Cuprizone/administration & dosage/toxicity MH - Demyelinating Diseases/chemically induced MH - Disease Models, Animal MH - Humans MH - Immunohistochemistry MH - In Situ Nick-End Labeling MH - Macrophages/metabolism MH - Male MH - Mice MH - Mice, Knockout MH - Microglia/metabolism MH - Monoamine Oxidase Inhibitors/pharmacology MH - Myelin Sheath/*metabolism/pathology/ultrastructure MH - Oligodendroglia/cytology/drug effects/*physiology MH - Receptors, Tumor Necrosis Factor/genetics/*metabolism MH - Receptors, Tumor Necrosis Factor, Type I MH - Receptors, Tumor Necrosis Factor, Type II MH - Stem Cells/*physiology/ultrastructure MH - Tumor Necrosis Factor-alpha/genetics/*metabolism MH - Up-Regulation EDAT- 2001/10/16 10:00 MHDA- 2002/01/05 10:01 CRDT- 2001/10/16 10:00 PHST- 2001/10/16 10:00 [pubmed] PHST- 2002/01/05 10:01 [medline] PHST- 2001/10/16 10:00 [entrez] AID - nn738 [pii] AID - 10.1038/nn738 [doi] PST - ppublish SO - Nat Neurosci. 2001 Nov;4(11):1116-22. doi: 10.1038/nn738.