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Abstract Title:

Polysaccharide fromameliorates cognitive impairment by regulating the inflammation of the brain-liver axis in rats.

Abstract Source:

Food Funct. 2021 Aug 2 ;12(15):6900-6914. PMID: 34338268

Abstract Author(s):

Yan Zhang, Haitao Li, Lianlian Song, Jianfei Xue, Xinyan Wang, Shuang Song, Shuang Wang

Article Affiliation:

Yan Zhang

Abstract:

Ganoderma lucidum (G. lucidum) polysaccharide-1 (GLP-1) is one of the polysaccharides isolated from the fruiting bodies of G. lucidum. Inflammation in the brain-liver axis plays a vital role in the progress of cognitive impairment. In this study, the beneficial effect of GLP-1 on d-galactose (d-gal) rats was carried out by regulating the inflammation of the brain-liver axis. A Morris water maze test was used to assess the cognitive ability of d-gal rats. ELISA and/or western blot analysis were used to detect the blood ammonia and inflammatory cytokines levels in the brain-liver axis. Metabolomic analysis was used to evaluate the changes of small molecule metabolomics between the brain and liver. As a result, GLP-1 could obviously ameliorate the cognitive impairment of d-gal rats. The mechanism was related to the decreasing levels of TNF-α, IL-6, phospho-p38MAPK, phospho-p53, and phospho-JNK1 + JNK2 + JNK3, the increasing levels of IL-10 and TGF-β1, and the regulation of the metabolic disorders of the brain-liver axis. Our study suggests that G. lucidum could be exploited as an effective food or health care product to prevent anddelay cognitive impairment and improve the quality of life.

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