Subgingival microbiome at different levels of cognition

Oral health and declining cognition may have a bi-directional association. We characterized the subgingival microbiota composition of subjects from normal cognition to severe cognitive decline in two cohorts. Memory and Periodontitis (MINOPAR) include 202 home-living participants (50-80 years) in Sw...

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Veröffentlicht in:JOURNAL OF ORAL MICROBIOLOGY 2023, Vol.15 (1), p.2178765-2178765
Hauptverfasser: Fogelholm, Nele, Leskelä, Jaakko, Manzoor, Muhammed, Holmer, Jacob, Paju, Susanna, Hiltunen, Kaija, Roitto, Hanna-Maria, Saarela, Riitta Kt, Pitkälä, Kaisu, Eriksdotter, Maria, Buhlin, Kåre, Pussinen, Pirkko J, Mäntylä, Päivi
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container_title JOURNAL OF ORAL MICROBIOLOGY
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creator Fogelholm, Nele
Leskelä, Jaakko
Manzoor, Muhammed
Holmer, Jacob
Paju, Susanna
Hiltunen, Kaija
Roitto, Hanna-Maria
Saarela, Riitta Kt
Pitkälä, Kaisu
Eriksdotter, Maria
Buhlin, Kåre
Pussinen, Pirkko J
Mäntylä, Päivi
description Oral health and declining cognition may have a bi-directional association. We characterized the subgingival microbiota composition of subjects from normal cognition to severe cognitive decline in two cohorts. Memory and Periodontitis (MINOPAR) include 202 home-living participants (50-80 years) in Sweden. Finnish Oral Health Studies in Older Adults (FINORAL) include 174 participants (≥65 years) living in long-term care in Finland. We performed oral examination and assessed the cognitive level with Mini Mental State Examination (MMSE). We sequenced the 16S-rRNA gene (V3-V4 regions) to analyse the subgingival bacterial compositions. The microbial diversities only tended to differ between the MMSE categories, and the strongest determinants were increased probing pocket depth (PPD) and presence of caries. However, abundances of 101 taxa were associated with the MMSE score. After adjusting for age, sex, medications, PPD, and caries, only eight taxa retained the significance in the meta-analyses of the two cohorts. Especially Lachnospiraceae [XIV] at the family, genus, and species level increased with decreasing MMSE. Cognitive decline is associated with obvious changes in the composition of the oral microbiota. Impaired cognition is accompanied with poor oral health status and the appearance of major taxa of the gut microbiota in the oral cavity. Good oral health-care practices require special deliberations among older adults.
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subjects Adults
Cognition
Cognition & reasoning
Cognitive ability
cognitive decline
Composition
Dental caries
Gingiva
Intestinal microflora
Long-term care
Microbiomes
Microbiota
Microorganisms
mini mental state examination (MMSE)
older adults
Older people
Oral cavity
Oral health
Oral hygiene
Original
Periodontitis
rRNA 16S
subgingival microbiome
Taxa
title Subgingival microbiome at different levels of cognition
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