کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9989851 1580767 2005 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Macrophage-depletion induced impairment of experimental CNS remyelination is associated with a reduced oligodendrocyte progenitor cell response and altered growth factor expression
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی عصب شناسی
پیش نمایش صفحه اول مقاله
Macrophage-depletion induced impairment of experimental CNS remyelination is associated with a reduced oligodendrocyte progenitor cell response and altered growth factor expression
چکیده انگلیسی
Although macrophages are mediators of CNS demyelination, they are also implicated in remyelination. To examine the role of macrophages in CNS remyelination, adult rats were depleted of monocytes using clodronate liposomes and demyelination induced in the spinal cord white matter using lysolecithin. In situ hybridization for scavenger receptor-B and myelin basic protein (MBP) revealed a transiently impaired macrophage response associated with delayed remyelination in liposome-treated animals. Macrophage reduction corresponded with delayed recruitment of PDGFRα+ oligodendrocyte progenitor cells (OPCs), which preceded changes in myelin phagocytosis, indicating a macrophage effect on OPCs independent of myelin debris clearance. Macrophage-depletion induced changes in the mRNA expression of insulin-like growth factor-1 and transforming growth factor β1, but not platelet-derived growth factor-A and fibroblast growth factor-2. These data suggest that the macrophage response to toxin-induced demyelination influences the growth factor environment, thereby affecting the behavior of OPCs and hence the efficiency of remyelination.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neurobiology of Disease - Volume 18, Issue 1, February 2005, Pages 166-175
نویسندگان
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