HIV-1、甲基苯丙胺与星形胶质细胞处于神经炎症的交叉点。

HIV-1, methamphetamine and astrocytes at neuroinflammatory Crossroads.

作者信息

Borgmann Kathleen, Ghorpade Anuja

机构信息

Department of Cell Biology and Immunology, University of North Texas Health Science Center Fort Worth, TX, USA.

出版信息

Front Microbiol. 2015 Oct 27;6:1143. doi: 10.3389/fmicb.2015.01143. eCollection 2015.

Abstract

As a popular psychostimulant, methamphetamine (METH) use leads to long-lasting, strong euphoric effects. While METH abuse is common in the general population, between 10 and 15% of human immunodeficiency virus-1 (HIV-1) patients report having abused METH. METH exacerbates the severity and onset of HIV-1-associated neurocognitive disorders (HAND) through direct and indirect mechanisms. Repetitive METH use impedes adherence to antiretroviral drug regimens, increasing the likelihood of HIV-1 disease progression toward AIDS. METH exposure also directly affects both innate and adaptive immunity, altering lymphocyte numbers and activity, cytokine signaling, phagocytic function and infiltration through the blood brain barrier. Further, METH triggers the dopamine reward pathway and leads to impaired neuronal activity and direct toxicity. Concurrently, METH and HIV-1 alter the neuroimmune balance and induce neuroinflammation, which modulates a wide range of brain functions including neuronal signaling and activity, glial activation, viral infection, oxidative stress, and excitotoxicity. Pathologically, reactive gliosis is a hallmark of both HIV-1- and METH-associated neuroinflammation. Significant commonality exists in the neurotoxic mechanisms for both METH and HAND; however, the pathways dysregulated in astroglia during METH exposure are less clear. Thus, this review highlights alterations in astrocyte intracellular signaling pathways, gene expression and function during METH and HIV-1 comorbidity, with special emphasis on HAND-associated neuroinflammation. Importantly, this review carefully evaluates interventions targeting astrocytes in HAND and METH as potential novel therapeutic approaches. This comprehensive overview indicates, without a doubt, that during HIV-1 infection and METH abuse, a complex dialog between all neural cells is orchestrated through astrocyte regulated neuroinflammation.

摘要

作为一种广受欢迎的精神兴奋剂,甲基苯丙胺(METH)的使用会产生持久而强烈的欣快感。虽然METH滥用在普通人群中很常见,但10%至15%的人类免疫缺陷病毒1型(HIV-1)患者报告曾滥用过METH。METH通过直接和间接机制加剧了HIV-1相关神经认知障碍(HAND)的严重程度并加速其发病。反复使用METH会妨碍对抗逆转录病毒药物治疗方案的依从性,增加HIV-1疾病向艾滋病进展的可能性。接触METH还会直接影响先天免疫和适应性免疫,改变淋巴细胞数量和活性、细胞因子信号传导、吞噬功能以及通过血脑屏障的浸润。此外,METH触发多巴胺奖赏通路并导致神经元活动受损和直接毒性。同时,METH和HIV-1改变神经免疫平衡并诱导神经炎症,这会调节包括神经元信号传导和活动、胶质细胞激活、病毒感染、氧化应激和兴奋性毒性在内的多种脑功能。在病理上,反应性胶质增生是HIV-1和METH相关神经炎症的一个标志。METH和HAND的神经毒性机制存在显著的共性;然而,METH暴露期间星形胶质细胞中失调的通路尚不清楚。因此,本综述重点介绍了METH与HIV-1合并感染期间星形胶质细胞内信号通路、基因表达和功能的变化,特别强调与HAND相关的神经炎症。重要的是,本综述仔细评估了针对HAND和METH中星形胶质细胞的干预措施,将其作为潜在的新型治疗方法。这一全面概述无疑表明,在HIV-1感染和METH滥用期间,所有神经细胞之间通过星形胶质细胞调节的神经炎症进行着复杂的对话。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/872d/4621459/3ae83cfd8ae2/fmicb-06-01143-g0001.jpg

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