Distinct macrophage subpopulations regulate viral encephalitis but not viral clearance in the CNS.

Distinct macrophage subpopulations regulate viral encephalitis but not viral clearance in the CNS.
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DOI:
10.1016/j.jneuroim.2010.05.034
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发表时间:
2010-09-14
影响因子:
3.3
通讯作者:
Ciavarra RP
Ciavarra RP
中科院分区:
医学4区
文献类型:
--
作者:
Steel CD;Kim WK;Sanford LD;Wellman LL;Burnett S;Van Rooijen N;Ciavarra RP

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鼻内应用水泡性口炎病毒 (VSV) 会诱发急性脑炎,其特征是明显的骨髓和 T 细胞浸润。因此,本研究检查了不同吞噬细胞群对 VSV 脑炎的作用。外周巨噬细胞的消融不会损害 VSV 脑炎或大脑中的病毒清除,而脾边缘树突细胞的耗竭会损害这种反应并增加发病率/死亡率。大脑血管周围巨噬细胞的选择性耗竭也抑制了这种反应,而不改变病毒清除率。因此,两个解剖学上不同的吞噬细胞群体以非冗余的方式调节 VSV 脑炎,尽管这两个群体对于 CNS 中的病毒清除都不是必需的。
Intranasal application of vesicular stomatitis virus (VSV) induces acute encephalitis characterized by a pronounced myeloid and T cell infiltrate. The role of distinct phagocytic populations on VSV encephalitis was therefore examined in this study. Ablation of peripheral macrophages did not impair VSV encephalitis or viral clearance from the brain, whereas, depletion of splenic marginal dendritic cells impaired this response and enhanced morbidity/mortality. Selective depletion of brain perivascular macrophages also suppressed this response without altering viral clearance. Thus, two anatomically distinct phagocytic populations regulate VSV encephalitis in a non-redundant fashion although neither population is essential for viral clearance in the CNS.
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