Aging sensitizes rapidly isolated hippocampal microglia to LPS ex vivo.

Aging sensitizes rapidly isolated hippocampal microglia to LPS ex vivo.
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DOI:
10.1016/j.jneuroim.2010.05.022
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发表时间:
2010-09-14
影响因子:
3.3
通讯作者:
Maier SF
Maier SF
中科院分区:
医学4区
文献类型:
--
作者:
Frank MG;Barrientos RM;Watkins LR;Maier SF

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本研究测试了老化是否使海马小胶质细胞对促炎性刺激体外敏感。将来自3和24月龄雄性F344 × BN F1大鼠的海马小胶质细胞离体暴露于LPS(0、0.1、1、10和100 ng/ml)。LPS刺激后2小时,评估小胶质细胞活化标志物和细胞因子的基因表达。24月龄的动物表现出对LPS的增强的促炎细胞因子(IL-1β和IL-6)应答,并且无论LPS处理如何,CD 11b、Iba-1和MHCII水平都增加。目前的结果表明,老化敏感的海马小胶质细胞促炎的挑战。
The present study tested whether aging sensitizes hippocampal microglia to a pro-inflammatory challenge ex vivo. Hippocampal microglia from 3 and 24 mo old male F344 × BN F1 rats were exposed to LPS (0, 0.1, 1, 10 and 100 ng/ml) ex vivo. 2 h post-LPS challenge, gene expression of microglial activation markers and cytokines were assessed. 24 mo old animals exhibited a potentiated pro-inflammatory cytokine (IL-1β and IL-6) response to LPS and increased levels of CD11b, Iba-1 and MHCII irrespective of LPS treatment. The present results demonstrate that aging sensitizes hippocampal microglia to pro-inflammatory challenges.
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