Minocycline treatment reduces white matter damage after excitotoxic striatal injury

被引:35
作者
Guimaraes, Joanilson S. [2 ]
Freire, Marco Aurelio M. [3 ]
Lima, Rafael R.
Picanco-Diniz, Cristovam W. [3 ]
Pereira, Antonio [2 ,4 ]
Gomes-Leal, Walace [1 ]
机构
[1] Fed Univ Para, Inst Biol Sci, Lab Expt Neuroprotect & Neuroregenerat, BR-66075900 Belem, Para, Brazil
[2] Edmond & Lily Safra Int Inst Neurosci Natal, Natal, RN, Brazil
[3] Fed Univ Para, Inst Biol Sci, Lab Neurodegenerat & Infect, BR-66075900 Belem, Para, Brazil
[4] Univ Fed Rio Grande do Norte, BR-59072970 Natal, RN, Brazil
关键词
Excitotoxicity; Neurodegeneration; Oligodendrocyte; Myelin; White matter; Striatum; FOCAL CEREBRAL-ISCHEMIA; SPINAL-CORD-INJURY; INFLAMMATORY RESPONSE; AXONAL DAMAGE; MYELIN IMPAIRMENT; MICROGLIA; RAT; OLIGODENDROCYTES; ACTIVATION; APOPTOSIS;
D O I
10.1016/j.brainres.2010.03.007
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
We investigated the protective effects of minocycline following white matter damage (WMD) in the rat striatum. Excitotoxic lesions were induced by N-Methyl-D-Aspartate (NMDA) microinjections and caused striatal damage, concomitant with microglial/macrophage activation. The excitotoxic lesion both damaged oligodendrocytes (Tau-1(+) cells) and caused a decrease in tissue reactivity for myelin basic protein (MBP) after post-lesional day 3 (PLD). Treatment with the semi-synthetic tetracycline antibiotic minocycline, however, led to oligodendrocyte preservation and decreased myelin impairment. Taken together, these results suggest that white matter damage (WMD) is an important component of the physiopathology of acute striatal damage and that microglia/macrophage activation contributes to this pathological phenomenon. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码:182 / 193
页数:12
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