肠道菌群
认知功能衰退
多糖
认知
肠-脑轴
脑老化
生物
神经科学
内科学
医学
免疫学
生物化学
痴呆
疾病
作者
Yuan Gao,Bing Li,Hong Liu,Yajuan Tian,Chao Gu,Xiaoli Du,Ren Bu,Jie Gao,Yang Liu,Gang Li
出处
期刊:Aging
[Impact Journals, LLC]
日期:2021-06-03
卷期号:13 (11): 15320-15335
被引量:39
标识
DOI:10.18632/aging.203090
摘要
Recent evidence suggests alterations in the gut microbiota-brain axis may drive cognitive impairment with aging. In the present study, we observed that prolonged administration of D-galactose to mice induced cognitive decline, gut microbial dysbiosis, peripheral inflammation, and oxidative stress. In this model of age-related cognitive decline, Cistanche deserticola polysaccharides (CDPS) improved cognitive function in D-galactose-treated mice by restoring gut microbial homeostasis, thereby reducing oxidative stress and peripheral inflammation. The beneficial effects of CDPS in these aging model mice were abolished through ablation of gut microbiota with antibiotics or immunosuppression with cyclophosphamide. Serum metabolomic profiling showed that levels of creatinine, valine, L-methionine, o-Toluidine, N-ethylaniline, uric acid and proline were all altered in the aging model mice, but were restored by CDPS. These findings demonstrated that CDPS improves cognitive function in a D-galactose-induced aging model in mice by restoring homeostasis of the gut microbiota-brain axis, which alleviated an amino acid imbalance, peripheral inflammation, and oxidative stress. CDPS thus shows therapeutic potential for patients with memory and learning disorders, especially those related to gut microbial dysbiosis.
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