High throughput DNA sequencing to detect differences in the subgingival plaque microbiome in elderly subjects with and without dementia

Investigative Genetics

Christopher F Cuff³  Bei Wu⁵  Brenda L Plassman¹  Donald Primerano²  James Denvir²  Goran Boskovic²  Richard Crout⁴  Tiffany Ngan⁴  Jonathan M Dehlin³  Andrew F Cockburn³ 

[1] Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, 2200 West Main Street, Durham, NC, 27706, USA;Department of Biochemistry and Microbiology, Robert C. Byrd Biotechnology Science Center, Joan C. Edwards School of Medicine, One John Marshall Drive, Huntington, WV, 25755, USA;Microbiology, Immunology & Cell Biology, School of Medicine, Robert C. Byrd Health Sciences Center, West Virginia University, P.O. Box 4622, Morgantown, WV, 26506-4622, USA;Periodontics, School of Dentistry, Robert C. Byrd Health Sciences Center, West Virginia University, P.O. Box 9400, Morgantown, WV, 26506-9400, USA;School of Nursing and Global Health Institute, Duke University, 307 Trent Drive, Durham, NC, 27710, USA

关键词: Subgingival plaque;    Oral microbiome;    Oral disease;    Cognitive impairment;   

Others  :  801762
DOI  :  10.1186/2041-2223-3-19

 received in 2012-06-28, accepted in 2012-08-30,  发布年份 2012

【 摘 要 】

Background

To investigate the potential association between oral health and cognitive function, a pilot study was conducted to evaluate high throughput DNA sequencing of the V3 region of the 16S ribosomal RNA gene for determining the relative abundance of bacterial taxa in subgingival plaque from older adults with or without dementia.

Methods

Subgingival plaque samples were obtained from ten individuals at least 70 years old who participated in a study to assess oral health and cognitive function. DNA was isolated from the samples and a gene segment from the V3 portion of the 16S bacterial ribosomal RNA gene was amplified and sequenced using an Illumina HiSeq1000 DNA sequencer. Bacterial populations found in the subgingival plaque were identified and assessed with respect to the cognitive status and oral health of the participants who provided the samples.

Results

More than two million high quality DNA sequences were obtained from each sample. Individuals differed greatly in the mix of phylotypes, but different sites from different subgingival depths in the same subject were usually similar. No consistent differences were observed in this small sample between subjects separated by levels of oral health, sex, or age; however a consistently higher level of Fusobacteriaceae and a generally lower level of Prevotellaceae was seen in subjects without dementia, although the difference did not reach statistical significance, possibly because of the small sample size.

Conclusions

The results from this pilot study provide suggestive evidence that alterations in the subgingival microbiome are associated with changes in cognitive function, and provide support for an expanded analysis of the role of the oral microbiome in dementia.

【 授权许可】

   
2012 Cockburn et al.; licensee BioMed Central Ltd.

【 图 表 】

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