A novel brain injury mechanism after intracerebral hemorrhage: the interaction between heme products and the immune system.

A novel brain injury mechanism after intracerebral hemorrhage: the interaction between heme products and the immune system.
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DOI:
10.1016/j.mehy.2009.08.002
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发表时间:
2010-01
期刊:
影响因子:
4.7
通讯作者:
Clark, Joseph F.
Clark, Joseph F.
中科院分区:
医学4区
文献类型:
--
作者:
Loftspring, Matthew C.;Hansen, Craig;Clark, Joseph F.

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在本文中,我们假设一种新的机制,脑出血后发生脑损伤。我们提出以下机制:1)从外渗的红细胞来源的血红素降解为胆红素和胆红素氧化产物(BOXes)。2)胆红素和BOX激活小胶质细胞和星形胶质细胞,它们是大脑中具有免疫功能的细胞。这种激活导致细胞因子的释放和脑内皮细胞腔表面上的白细胞粘附分子的激活。3)然后白细胞进入大脑。4)白细胞、活化的神经胶质细胞和细胞因子参与损伤过程。我们目前的初步数据支持我们的假设,BOXes激活神经胶质细胞。
In this paper we hypothesize a novel mechanism by which brain injury occurs after intracerebral hemorrhage. We propose the following mechanism: 1) heme derived from extravasated erythrocytes is degraded into bilirubin and bilirubin oxidation products (BOXes). 2) Bilirubin and BOXes activate microglia and astrocytes, which are cells with immune functions in the brain. This activation leads to release of cytokines and activation of leukocyte adhesion molecules on the luminal surface of cerebral endothelial cells. 3) Leukocytes then traffic into the brain. 4) Leukocytes, activated glial cells and cytokines contribute to injury processes. We present preliminary data in support of our hypothesis that BOXes activate glia.
DOI: 10.1111/j.1471-4159.2007.04667.x
发表时间: 2007-09-01
影响因子: 4.7
作者:
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