Matrix metalloproteinase dependent cleavage of cell adhesion molecules in the pathogenesis of CNS dysfunction with HIV and methamphetamine.

Matrix metalloproteinase dependent cleavage of cell adhesion molecules in the pathogenesis of CNS dysfunction with HIV and methamphetamine.
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DOI:
10.2174/157016212802138733
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发表时间:
2012-07
影响因子:
1
通讯作者:
Maguire-Zeiss KA
Maguire-Zeiss KA
中科院分区:
医学4区
文献类型:
--
作者:
Conant K;Lim ST;Randall B;Maguire-Zeiss KA

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生理上适当水平的基质金属蛋白酶(MMPs)可能对中枢神经系统功能的各个方面都很重要。特别是,这些酶可能有助于神经元活动依赖的突触可塑性和干细胞迁移和免疫监视过程中的细胞移动。然而,在滥用甲基苯丙胺感染艾滋病毒的情况下,MMPs的水平可能会大幅增加。正如已发表的研究成果所证明的那样,MMP水平升高可能反过来影响血脑屏障的完整性。在此,我们认为MMPs水平的升高还可以通过一种涉及特定细胞和突触粘附分子裂解的机制促进小胶质细胞激活以及神经元和突触损伤。
Physiologically appropriate levels of matrix metalloproteinases (MMPs) are likely important to varied aspects of CNS function. In particular, these enzymes may contribute to neuronal activity dependent synaptic plasticity and to cell mobility in processes including stem cell migration and immune surveillance. Levels of MMPs may, however, be substantially increased in the setting of HIV infection with methamphetamine abuse. Elevated MMP levels might in turn influence integrity of the blood brain barrier, as has been demonstrated in published work. Herein we suggest that elevated levels of MMPs can also contribute to microglial activation as well as neuronal and synaptic injury through a mechanism that involves cleavage of specific cell and synaptic adhesion molecules.
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