Objectives: The aim of the study is to evaluate the cognitive-enhancing effects of hydrolysate of polyga- lasaponin (HPS) on senescence accelerate mouse P8 (SAMP8) mice, an effective Alzheimer's disease (AD) m...
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Objectives: The aim of the study is to evaluate the cognitive-enhancing effects of hydrolysate of polyga- lasaponin (HPS) on senescence accelerate mouse P8 (SAMP8) mice, an effective Alzheimer's disease (AD) model, and to research the relevant mechanisms. Methods: The cognitive-enhancing effects of HPS on SAMP8 mice were assessed using Morris water maze (MWM) and step-through passive avoidance tests. Then N-methyl-D-aspartate (NMDA) receptor subunit expression for both the cortex and hippocampus of mice was observed using Western blot- ting. Results: HPS (25 and 50 mg/kg) improved the escape rate and decreased the escape latency and time spent in the target quadrant for the SAMP8 mice in the MWM after oral administration of HPS for 10 d. Moreover, it decreased error times in the passive avoidance tests. Western blotting showed that HPS was able to reverse the levels of NMDAR1 and NMDAR2B expression in the cortex or hippocampus of model mice. Conclusions: The present study suggested that HPS can improve cognitive deficits in SAMP8 mice, and this mechanism might be associated with NMDA receptor (NMDAR)-related pathways.
目的 口腔菌群与人类健康之间的关系已被学界广泛认识,本研究采用系统评价的方法总结分析牙龈卟啉单胞菌在消化系统恶性肿瘤中的作用。方法 检索PubMed、Embase、MEDLINE、Cochrane图书馆、Scopus和Web of Science数据库,检索时限均从...
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目的 口腔菌群与人类健康之间的关系已被学界广泛认识,本研究采用系统评价的方法总结分析牙龈卟啉单胞菌在消化系统恶性肿瘤中的作用。方法 检索PubMed、Embase、MEDLINE、Cochrane图书馆、Scopus和Web of Science数据库,检索时限均从建库至2023年8月25日。由2位评价员独立筛选文献、提取资料并评价纳入文献的偏倚风险。遵循系统评价和荟萃分析的首选报告项目(preferred reporting items for systematic reviews and Meta-analyses,PRISMA)方法对纳入文献进行系统评价,分析牙龈卟啉单胞菌在各消化道恶性肿瘤中的致癌机制。结果 共计28篇文献(包括2项前瞻性队列研究,26项病例对照研究)被纳入本次系统评价,包括胃癌、食管癌、结直肠癌、胰腺癌、肝癌等多种类型。其中研究食管癌的文献有5篇,胃癌有5篇,结直肠癌有9篇(其中1篇同时研究胃癌),胰腺癌有7篇,肝癌有2篇。全部的纳入文献均报道了口腔菌群失调(包括牙龈卟啉单胞菌)与消化系统恶性肿瘤之间的风险关联。结论 本研究系统阐述了牙龈卟啉单胞菌在消化系统恶性肿瘤中的作用,对其可能的致病机制进行分析评价。
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