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Abstract Title:

Hesperidin Alleviates Lipopolysaccharide-Induced Neuroinflammation in Mice by Promoting the miRNA-132 Pathway.

Abstract Source:

Inflammation. 2016 Oct ;39(5):1681-9. PMID: 27378528

Abstract Author(s):

Min Li, Huanzhang Shao, Xia Zhang, Bingyu Qin

Article Affiliation:

Min Li

Abstract:

Previous studies have demonstrated that hesperidin, a flavanone glycoside from citrus fruits, produces antidepressant-like effects in both mice and rats. However, whether these effects are mediated by pro-inflammatory cytokines remains unknown. In the present study, we attempted to investigate the effects of hesperidin on the depressive-like behavior; the serum corticosterone concentrations; and the interleukin (IL)-1β, IL-6, and tumor necrosis factor alpha (TNF-α) levels in lipopolysaccharide (LPS)-induced depression-like mice. In particular, we evaluated the miRNA-132 expression after LPS and hesperidin treatment. We found that LPS injection not only decreased the sucrose preference and increased the serum corticosterone levels but also elevated IL-1β, IL-6, and TNF-α in the prefrontal cortex. More importantly, LPS down-regulated the expression of miRNA-132. Pre-treatment with hesperidin (25, 50, 100 mg/kg) for 7 days prevented these abnormalities induced by LPS injection. In contrast, this effectof hesperidin was abolished by a miRNA-132 antagomir. Taken together, these results suggest that the antidepressant-like mechanisms of hesperidin are at least partially related to decreased pro-inflammatory cytokine levels via the miRNA-132 pathway in the brain.

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