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<article xsi:noNamespaceSchemaLocation="http://jats.nlm.nih.gov/publishing/1.1/xsd/JATS-journalpublishing1-mathml3.xsd" dtd-version="1.1" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><front><journal-meta><journal-id journal-id-type="publisher-id">JCNR</journal-id><journal-title-group><journal-title>Journal of Clinical and Nursing Research</journal-title></journal-title-group><issn>2208-3685</issn><eissn>2208-3693</eissn><publisher><publisher-name>Bio-Byword Scientific Publishing Pty. Ltd.</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.26689/jcnr.v9i6.10962</article-id><article-categories><subj-group subj-group-type="heading"><subject>Article</subject></subj-group></article-categories><title>Reviewing the Role of Oral Microbiota in Cognitive Impairment from Microbiota Homeostasis and Pathogenic Bacteria</title><url>https://artdesignp.com/journal/JCNR/9/6/10.26689/jcnr.v9i6.10962</url><author>WangXiaoyue,ZhuHuanhuan,LiSimin,ZhanLin,LiJuan</author><pub-date pub-type="publication-year"><year>2025</year></pub-date><volume>9</volume><issue>6</issue><history><date date-type="pub"><published-time>2025-07-03</published-time></date></history><abstract>Cognitive impairment is a common symptom of various neurodegenerative diseases. In recent years, an increasing body of research has focused on the relationship between oral microbiota and cognitive impairment. This review aims to explore the microbial homeostasis of oral microbiota and its interactions and mechanisms with the host, as well as the impact of specific pathogenic bacteria on cognitive function. By summarizing existing studies, this review aims to provide a theoretical basis for the pathogenesis, risk assessment, and early intervention and treatment strategies for cognitive impairment.</abstract><keywords/></article-meta></front><body/><back><ref-list><ref id="B1" content-type="article"><label>1</label><element-citation publication-type="journal"><p>World Health Organization, 2021, Global Status Report on the Public Health Response to Dementia: Executive Summary, World Health Organization, Geneva.</p><pub-id pub-id-type="doi"/></element-citation></ref><ref id="B2" content-type="article"><label>2</label><element-citation publication-type="journal"><p>Gong W, Yu H, You W, et al., 2025, The Oral Microbiota: New Insight Into Intracranial Aneurysms. 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