Activation of α7 nicotinic acetylcholine receptor ameliorates HIV-associated neurology and neuropathology.
Activation of α7 nicotinic acetylcholine receptor ameliorates HIV-associated neurology and neuropathology.
复制标题
α7烟碱乙酰胆碱受体的激活可改善HIV相关的神经学和神经病理学
DOI:
10.1093/brain/awab251
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发表时间:
2021-12-16
期刊:
影响因子:
--
通讯作者:
He JJ
中科院分区:
文献类型:
--
作者:
Zhao X;Wilson K;Uteshev V;He JJ
HIV-associated neurocognitive disorders (HAND) in the era of combination antiretroviral therapy are primarily manifested as impaired behaviours, glial activation/neuroinflammation and compromised neuronal integrity, for which there are no effective treatments currently available. In the current study, we used doxycycline-inducible astrocyte-specific HIV Tat transgenic mice (iTat), a surrogate HAND model, and determined effects of PNU-125096, a positive allosteric modulator of α7 nicotinic acetylcholine receptor (α7 nAChR) on Tat-induced behavioural impairments and neuropathologies. We showed that PNU-125096 treatment significantly improved locomotor, learning and memory deficits of iTat mice while inhibited glial activation and increased PSD-95 expression in the cortex and hippocampus of iTat mice. Using α7 nAChR knockout mice, we showed that α7 nAChR knockout eliminated the protective effects of PNU-125096 on iTat mice. In addition, we showed that inhibition of p38 phosphorylation by SB239063, a p38 MAPK-specific inhibitor exacerbated Tat neurotoxicity in iTat mice. Last, we used primary mouse cortical individual cultures and neuron-astrocytes co-cultures and in vivo staining of iTat mouse brain tissues and showed that glial activation was directly involved in the interplay among Tat neurotoxicity, α7 nAChR activation and the p38 MAPK signalling pathway. Taken together, these findings demonstrated for the first time that α7 nAChR activation led to protection against HAND and suggested that α7 nAChR modulator PNU-125096 holds significant promise for development of therapeutics for HAND. Zhao et al. show that PNU-125096, a positive allosteric modulator of α7 nicotinic acetylcholine receptors, protects against neurological and neuropathological changes in a surrogate model of HIV-associated neurocognitive disorders (HAND), suggesting therapeutic potential for patients.
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DOI:
10.1073/pnas.0611699104
发表时间:
2007-02-27
影响因子:
11.1
作者:
Eugenin, Eliseo A.;King, Jessie E.;Berman, Joan W.
通讯作者:
Berman, Joan W.
DOI:
10.1080/13803390701565225
发表时间:
2008-01-01
影响因子:
2.2
作者:
Dawes, S.;Suarez, P.;Heaton, R. K.
通讯作者:
Heaton, R. K.
影响因子:
3.8
作者:
Bagasra, O;Lavi, E;Pomerantz, RJ
通讯作者:
Pomerantz, RJ
影响因子:
33.6
作者:
Albuquerque EX;Pereira EF;Alkondon M;Rogers SW
通讯作者:
Rogers SW
影响因子:
4.7
作者:
Dajas-Bailador, FA;Soliakov, L;Wonnacott, S
通讯作者:
Wonnacott, S