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(南非醉茄)改善阿尔茨海默病5xFAD小鼠模型的空间记忆、焦虑和抑郁样行为。

(Ashwagandha) Improves Spatial Memory, Anxiety and Depressive-like Behavior in the 5xFAD Mouse Model of Alzheimer's Disease.

作者信息

Gladen-Kolarsky Noah, Monestime Olivia, Bollen Melissa, Choi Jaewoo, Yang Liping, Magaña Armando Alcazar, Maier Claudia S, Soumyanath Amala, Gray Nora E

机构信息

Department of Neurology, Oregon Health and Science University, Portland, OR 97239, USA.

BENFRA Botanical Dietary Supplements Research Center, Portland, OR 97239, USA.

出版信息

Antioxidants (Basel). 2024 Sep 25;13(10):1164. doi: 10.3390/antiox13101164.

Abstract

(WS), also known as ashwagandha, is a popular botanical supplement used to treat various conditions including memory loss, anxiety and depression. Previous studies from our group showed an aqueous extract of WS root (WSAq) enhances cognition and alleviates markers for depression in . Here, we sought to confirm these effects in the 5xFAD mouse model of β-amyloid (Aβ) accumulation. Six- to seven-month-old male and female 5xFAD mice were treated with WSAq in their drinking water at 0 mg/mL, 0.5 mg/mL or 2.5 mg/mL for four weeks. In the fourth week of treatment, spatial memory, anxiety and depressive-like symptoms were evaluated. At the conclusion of behavioral testing, brain tissue was harvested, immunohistochemistry was performed, and the cortical expression of antioxidant response genes was evaluated. Both concentrations of WSAq improved spatial memory and reduced depressive and anxiety-related behavior. These improvements were accompanied by a reduction in Aβ plaque burden in the hippocampus and cortex and an attenuation of activation of microglia and astrocytes. Antioxidant response genes were upregulated in the cortex of WSAq-treated mice. Oral WSAq treatment could be beneficial as a therapeutic option in AD for improving disease pathology and behavioral symptoms. Future studies focused on dose optimization of WSAq administration and further assessment of the mechanisms by which WSAq elicits its beneficial effects will help inform the clinical potential of this promising botanical therapy.

摘要

南非醉茄(WS),也被称为印度人参,是一种常用的植物性补充剂,用于治疗包括记忆力减退、焦虑和抑郁在内的各种病症。我们团队之前的研究表明,WS根的水提取物(WSAq)可增强认知能力并减轻抑郁标志物。在此,我们试图在β-淀粉样蛋白(Aβ)积累的5xFAD小鼠模型中证实这些效果。6至7月龄的雄性和雌性5xFAD小鼠饮用含0 mg/mL、0.5 mg/mL或2.5 mg/mL WSAq的水,持续四周。在治疗的第四周,评估空间记忆、焦虑和抑郁样症状。行为测试结束时,采集脑组织,进行免疫组织化学分析,并评估抗氧化反应基因的皮质表达。两种浓度的WSAq均改善了空间记忆,减少了与抑郁和焦虑相关的行为。这些改善伴随着海马体和皮质中Aβ斑块负担的减轻以及小胶质细胞和星形胶质细胞激活的减弱。WSAq处理的小鼠皮质中抗氧化反应基因上调。口服WSAq治疗作为治疗阿尔茨海默病的一种选择,可能有助于改善疾病病理和行为症状。未来专注于WSAq给药剂量优化以及进一步评估WSAq产生有益效果机制的研究,将有助于了解这种有前景的植物疗法的临床潜力。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1f10/11504317/6a2afa291dad/antioxidants-13-01164-g001.jpg

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