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Abstract Title:

18β-Glycyrrhetinic acid alleviates demyelination by modulating the microglial M1/M2 phenotype in a mouse model of cuprizone-induced demyelination.

Abstract Source:

Neurosci Lett. 2021 06 11 ;755:135871. Epub 2021 Apr 1. PMID: 33812928

Abstract Author(s):

Hui Tian, Yahong Cheng, Yiyuan Zhang, Xinying Bai, Yuan Jiang, Jinjin Li, Shiqi Fan, Hong Ding

Article Affiliation:

Hui Tian

Abstract:

This research aimed to examine the nutritious supplementary function of 18β-Glycyrrhetinic acid (18β-GA) in moderating the myelin sheath destruction and behavioral impairments observed in the cuprizone model of demyelination. Mice were fed daily on food containing cuprizone (0.3 %) and given doses of 18β-GA (5 or 1 mg/kg) for a period of five weeks. The groups treated with 18β-GA exhibited improvements in exploratory behavior, locomotive activity, and weight. As assessed using luxol-fast blue and myelin basic protein (MBP) staining, which were used to detect demyelination in the brain, 18β-GA both reduced and prevented instances of cuprizone-induced demyelinating lesions; treatment with 18β-GA also caused the MBP level in the corpus callosum to increase. Furthermore, alongside these positive results following 18β-GA treatment, microglial polarisation was also observed to shift towards the beneficial M2 phenotype. The results of this research thus indicate the potential clinical application of 18β-GA for the prevention of myelin damage and behavioral dysfunction.

Study Type : Animal Study
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Additional Keywords : Demyelinating Diseases

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