PMID- 21029241 OWN - NLM STAT- MEDLINE DCOM- 20110818 LR - 20211020 IS - 1750-3639 (Electronic) IS - 1015-6305 (Print) IS - 1015-6305 (Linking) VI - 21 IP - 3 DP - 2011 May TI - Neuronal MCP-1 mediates microglia recruitment and neurodegeneration induced by the mild impairment of oxidative metabolism. PG - 279-97 LID - 10.1111/j.1750-3639.2010.00445.x [doi] AB - Chemokines are implicated in the neuroinflammation of several chronic neurodegenerative disorders. However, the precise role of chemokines in neurodegeneration is unknown. Thiamine deficiency (TD) causes abnormal oxidative metabolism in the brain as well as a well-defined microglia activation and neurodegeneration in the submedial thalamus nucleus (SmTN), which are common features of neurodegenerative diseases. We evaluated the role of chemokines in neurodegeneration and the underlying mechanism in a TD model. Among the chemokines examined, TD selectively induced neuronal expression of monocyte chemoattractant protein-1 (MCP-1) in the SmTN prior to microglia activation and neurodegeneration. The conditioned medium collected from TD-induced neurons caused microglia activation. With a neuron/microglia co-culture system, we showed that MCP-1-induced neurotoxicity required the presence of microglia, and exogenous MCP-1 was able to activate microglia and stimulated microglia to produce cytokines. A MCP-1 neutralizing antibody inhibited MCP-1-induced microglia activation and neuronal death in culture and in the thalamus. MCP-1 knockout mice were resistant to TD-induced neuronal death in SmTN. TD selectively induced the accumulation of reactive oxygen species in neurons, and antioxidants blocked TD-induced MCP-1 expression. Together, our results indicated an induction of neuronal MCP-1 during mild impairment of oxidative metabolism caused by microglia recruitment/activation, which exacerbated neurodegeneration. CI - (c) 2010 The Authors; Brain Pathology (c) 2010 International Society of Neuropathology. FAU - Yang, Guang AU - Yang G AD - Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Graduate School of the Chinese Academy of Sciences, Shanghai, China. FAU - Meng, Ya AU - Meng Y FAU - Li, Wenxia AU - Li W FAU - Yong, Yue AU - Yong Y FAU - Fan, Zhiqin AU - Fan Z FAU - Ding, Hanqing AU - Ding H FAU - Wei, Youzhen AU - Wei Y FAU - Luo, Jia AU - Luo J FAU - Ke, Zun-Ji AU - Ke ZJ LA - eng GR - R01 AA017226-01/AA/NIAAA NIH HHS/United States GR - AA015407/AA/NIAAA NIH HHS/United States GR - R01 AA015407-01A1/AA/NIAAA NIH HHS/United States GR - R01 AA015407-06/AA/NIAAA NIH HHS/United States GR - R01 AA015407/AA/NIAAA NIH HHS/United States GR - R01 AA017226/AA/NIAAA NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20101103 PL - Switzerland TA - Brain Pathol JT - Brain pathology (Zurich, Switzerland) JID - 9216781 RN - 0 (Ccl2 protein, mouse) RN - 0 (Chemokine CCL2) RN - 0 (Chemokines) RN - 0 (Reactive Oxygen Species) SB - IM MH - Animals MH - Cell Death/physiology MH - Chemokine CCL2/genetics/*metabolism MH - Chemokines/immunology MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Microglia/immunology/*physiology MH - Nerve Degeneration/*metabolism/pathology MH - Neurons/*metabolism/pathology MH - Oxidation-Reduction MH - Posterior Thalamic Nuclei/cytology/*metabolism/pathology MH - Reactive Oxygen Species/metabolism MH - Thiamine Deficiency/immunology/*metabolism PMC - PMC3046243 MID - NIHMS241556 EDAT- 2010/10/30 06:00 MHDA- 2011/08/19 06:00 PMCR- 2010/11/03 CRDT- 2010/10/30 06:00 PHST- 2010/10/30 06:00 [entrez] PHST- 2010/10/30 06:00 [pubmed] PHST- 2011/08/19 06:00 [medline] PHST- 2010/11/03 00:00 [pmc-release] AID - BPA445 [pii] AID - 10.1111/j.1750-3639.2010.00445.x [doi] PST - ppublish SO - Brain Pathol. 2011 May;21(3):279-97. doi: 10.1111/j.1750-3639.2010.00445.x. Epub 2010 Nov 3.