牙周炎
老年斑
疾病
机制(生物学)
发病机制
痴呆
医学
阿尔茨海默病
炎症
风险因素
淀粉样蛋白(真菌学)
免疫学
τ蛋白
病理
内科学
哲学
认识论
作者
Saba Eslami,Nafiseh Hosseinzadeh Shakib,Zahra Fooladfar,Sina Nasrollahian,Saman Baghaei,Seyed Ali Mosaddad,Mohammad Motamedifar
标识
DOI:10.1002/jobm.202300250
摘要
Alzheimer's disease causes memory loss and dementia in older adults through a neurodegenerative mechanism. Despite the pathophysiological clarification of this cognitive disorder, novel molecular and cellular pathways should be identified to determine its exact mechanism. Alzheimer's disease (AD) is pathologically characterized by senile plaques comprising beta-amyloid and neurofibrillary tangles (NFTs) formed by hyperphosphorylated tau as a microtubule-associated protein with a key role in the pathogenesis of AD. Periodontitis through inflammatory pathways is a risk factor for deteriorating cognitive impairment in AD patients. Poor oral hygiene coupled with immunocompromised status in older adults causes periodontal diseases and chronic inflammations through an oral bacterial imbalance. Toxic bacterial products, including bacteria themselves, can reach the central nervous system through the bloodstream and evoke inflammatory responses. The present review was conducted to investigate relationships between AD and periodontitis-involved bacteria as a risk factor.
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