Relationship between dementia and gut microbiome-associated metabolites: a cross-sectional study in Japan

Dysregulation of the gut microbiome is associated with dementia. However, the relationship between microbiome-associated metabolites and dementia has yet to be identified. Outpatients visiting a memory clinic in Japan enrolled in this cross-sectional study; 107 subjects were eligible for the study,...

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Vydané v:	Scientific reports Ročník 10; číslo 1; s. 8088
Hlavní autori:	Saji, Naoki, Murotani, Kenta, Hisada, Takayoshi, Kunihiro, Tadao, Tsuduki, Tsuyoshi, Sugimoto, Taiki, Kimura, Ai, Niida, Shumpei, Toba, Kenji, Sakurai, Takashi
Médium:	Journal Article
Jazyk:	English
Vydavateľské údaje:	London Nature Publishing Group UK 18.05.2020 Nature Publishing Group
Predmet:	38 38/77 38/91 631/326 692/499 692/617/375/132 Activities of daily living Aged Aged, 80 and over Ammonia Ammonia - analysis Ammonia - metabolism Bacteria - classification Bacteria - genetics Bacteria - isolation & purification Bacteria - metabolism Cognition Cognitive ability Cross-Sectional Studies Dementia Dementia - microbiology Dementia - psychology Dementia disorders Demography Digestive system Feces - chemistry Feces - microbiology Female Gastrointestinal Microbiome Gut microbiota Health risk assessment Humanities and Social Sciences Humans Intestinal microflora Japan Lactic acid Lactic Acid - analysis Lactic Acid - metabolism Male Metabolites Microbiomes Microbiota multidisciplinary Neuroimaging Restriction fragment length polymorphism Risk factors Science Science (multidisciplinary) Japan
ISSN:	2045-2322, 2045-2322
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Shrnutí:	Dysregulation of the gut microbiome is associated with dementia. However, the relationship between microbiome-associated metabolites and dementia has yet to be identified. Outpatients visiting a memory clinic in Japan enrolled in this cross-sectional study; 107 subjects were eligible for the study, 25 of which had dementia. We collected demographics, activities of daily living, risk factors, cognitive function, and brain imaging data. The gut microbiome was assessed using terminal restriction fragment length polymorphism analysis. Concentrations of faecal metabolite were measured. We used multivariable logistic regression analyses to identify whether metabolites were independently related to dementia. The concentrations of metabolites were significantly different between subjects with and those without dementia. Every 1 standard deviation increment in faecal ammonia concentration was associated with around a 1.6-fold risk for the presence of dementia. A higher faecal lactic acid concentration was related to a lower risk of dementia, by around 60%. A combination of higher faecal ammonia and lactic acid concentrations was indicative of the presence of dementia, and had a similar predictive value as traditional biomarkers of dementia. Thus, faecal ammonia and lactic acid are related to dementia, independently of the other risk factors for dementia and dysregulation of the gut microbiome.
Bibliografia:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 content type line 23
ISSN:	2045-2322 2045-2322
DOI:	10.1038/s41598-020-65196-6