Quercetin attenuates AZT-induced neuroinflammation in the CNS

Yi Yang, Xiaokang Liu, Ting Wu, Wenping Zhang, Jianhong Shu, Yulong He, Shao-Jun Tang

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Highly active anti-retroviral therapy (HAART) is very effective in suppressing HIV-1 replication in patients. However, continuous HAART is required to prevent viral rebound, which may have detrimental effects in various tissues, including persistent neuroinflammation in the central nervous system (CNS). Here, we show that quercetin (3,5,7,3',4'-pentahydroxy flavones), a natural antioxidant used in Chinese traditional medicines, suppresses the neuroinflammation that is induced by chronic exposure to Zidovudine (azidothymidine, AZT), a nucleoside reverse transcriptase inhibitor (NRTI) that is commonly part of HAART regimens. We found that the up-regulation of pro-inflammatory cytokines and microglial and astrocytic markers induced by AZT (100 mg/kg/day; 8 days) was significantly inhibited by co-Administration of quercetin (50 mg/kg/day) in the mouse cortex, hippocampus and spinal cord. We further showed that quercetin attenuated AZT-induced up-regulation of Wnt5a, a key regulator of neuroinflammation. These results suggest that quercetin has an inhibitory effect on AZT-induced neuroinflammation in the CNS, and Wnt5a signaling may play an important role in this process. Our results may further our understanding of the mechanisms of HAART-related neurotoxicity and help in the development of effective adjuvant therapy.

Original languageEnglish (US)
Article number6194
JournalScientific Reports
Volume8
Issue number1
DOIs
StatePublished - Dec 1 2018

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Zidovudine
Quercetin
Central Nervous System
Up-Regulation
Flavones
Therapeutics
Reverse Transcriptase Inhibitors
Chinese Traditional Medicine
Nucleosides
HIV-1
Hippocampus
Spinal Cord
Antioxidants
Cytokines

ASJC Scopus subject areas

  • General

Cite this

Quercetin attenuates AZT-induced neuroinflammation in the CNS. / Yang, Yi; Liu, Xiaokang; Wu, Ting; Zhang, Wenping; Shu, Jianhong; He, Yulong; Tang, Shao-Jun.

In: Scientific Reports, Vol. 8, No. 1, 6194, 01.12.2018.

Research output: Contribution to journalArticle

Yang, Yi ; Liu, Xiaokang ; Wu, Ting ; Zhang, Wenping ; Shu, Jianhong ; He, Yulong ; Tang, Shao-Jun. / Quercetin attenuates AZT-induced neuroinflammation in the CNS. In: Scientific Reports. 2018 ; Vol. 8, No. 1.
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