Molecular mechanism of the formation of the cerebral white matter lesion.
脑白质病变形成的分子机制。
基本信息
- 批准号:17590873
- 负责人:
- 金额:$ 1.41万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:2005
- 资助国家:日本
- 起止时间:2005 至 2006
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Recently, mutations in the genes encoding the subunits of the eukaryotic translation initiation factor 2B (eIF2B) have been identified as the cause of leukoencephalopathy with vanishing white matter (VWM). EIF2B plays an important role in the regulation of translation initiation of protein synthesis. We identified a novel EIF2B mutation in adult-onset VWM. We hypothesized the abnormality of eIF in Binswanger disease may cause the white matter lesions of Binswanger disesase.We used a total number of 16 cases constituting of 5 age matched control, 5 patients with Binswanger disease, 6 other disease. We used the section from the cerebral white matter.Immunohistochemistry by using ABC method were performed. The number of GFAP positive cell showed no significant difference between Binswanger group and normal control. On the other hand, We identified the increased number of the phosphorylated eIF2α positive astrocytes in the cerebral white matter lesion in Binswanger disease. EIF2α is a competitive inhibitor of eIF2B. Therefore, we hypothesized that phosphorylation of eIF2α, dysfunction of eIF2B, reduced mRNA translation and dysfunction of astrocytes may be the cause of white matter damage of Binswanger disease. We further examined the expression of CREB-2, GADD, phosphorylated GCN-2, phosphorylated MAPK in the autopsied brains and the animal model of chronic ischemia. We did not get the significant difference.We need a further research to identify the molecular mechanism of the formation of the cerebral white matter lesion of Binswanger disease.
最近,编码真核生物翻译起始因子2B(eIF 2B)亚基的基因突变已被确定为伴有消失白色物质(VWM)的白质脑病的原因。EIF 2B在调节蛋白质合成的翻译起始中起重要作用。我们发现了一个新的EIF 2B突变成人发作VWM。我们假设Binswanger病的eIF异常可能导致Binswanger病的白色病变,共16例,其中5例年龄匹配的对照,5例Binswanger病,6例其他疾病。采用脑白色组织切片,免疫组化ABC法。胶质纤维酸性蛋白阳性细胞数在Binswanger组与正常对照组之间无显著性差异。另一方面,我们发现在Binswanger病的脑白色病变中,磷酸化eIF 2 α阳性星形胶质细胞数量增加。EIF 2 α是eIF 2B的竞争性抑制剂。因此,我们推测eIF 2 α的磷酸化、eIF 2B的功能障碍、mRNA翻译减少和星形胶质细胞功能障碍可能是Binswanger病白色损害的原因。我们进一步检测了CREB-2、GADD、磷酸化GCN-2、磷酸化MAPK在尸检脑和慢性缺血动物模型中的表达。结论Binswanger病脑白色物质损害的分子机制有待进一步研究。
项目成果
期刊论文数量(18)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Severe disease, unaltered leukocyte migration, and reduced IFN-γ production in CXCR3-/- mice with experimental autoimmune encephalomyelitis
- DOI:10.4049/jimmunol.176.7.4399
- 发表时间:2006-04-01
- 期刊:
- 影响因子:4.4
- 作者:Liu, LiPing;Huang, DeRen;Ransohoff, Richard M.
- 通讯作者:Ransohoff, Richard M.
CD16+CD57-natural killer cells in multifocal motor neuropathy
多灶性运动神经病中的 CD16 CD57 自然杀伤细胞
- DOI:
- 发表时间:2005
- 期刊:
- 影响因子:0
- 作者:Takagi M;et al.;Mizutani K
- 通讯作者:Mizutani K
Matrix metalloptoteinase-2 plays a critical role in the pathogenesis of white matter lesions after chronic cerebral hypoperfusion in rodents
基质金属蛋白酶-2在啮齿类动物慢性脑低灌注后白质病变的发病机制中起着关键作用
- DOI:
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:Jiang YM;Yamamoto M;Kobayashi Y;Yoshihara T;Liang Y;Terao S;Takeuchi H;Ishigaki S;Katsuno M;Adachi H;Niwa J;Tanaka F;Doyu M;Yoshida M;Hashizume Y;Sobue G.;Nakaji et al.
- 通讯作者:Nakaji et al.
CD16+CD57- natural killer cells in multifocal motor neuropathy
CD16 CD57- 多灶性运动神经病中的自然杀伤细胞
- DOI:
- 发表时间:2005
- 期刊:
- 影响因子:0
- 作者:水田 依久子;戸田 達史;Mizutani K et al.
- 通讯作者:Mizutani K et al.
Ictal monoparesis associated with lesions in the primary somatosensory area
- DOI:10.1212/01.wnl.0000183069.60084.a3
- 发表时间:2005-11-08
- 期刊:
- 影响因子:9.9
- 作者:Matsumoto, R;Ikeda, A;Shibasaki, H
- 通讯作者:Shibasaki, H
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