Subgingival microbial diversity and respiratory decline: A cross-sectional study

Area of Science:

• Oral microbiology
• Respiratory physiology
• Periodontal disease research

Background:

• Periodontal disease is linked to systemic health issues.
• Subgingival microbial communities play a role in oral health.
• Respiratory function can be affected by systemic inflammation.

Purpose of the Study:

• To determine if subgingival microbial diversity correlates with reduced respiratory function.
• To investigate the association between oral microbiome composition and lung capacity.

Main Methods:

• Analysis of subgingival plaque samples from 507 dentate men aged 58-72.
• High-throughput sequencing of 16S rRNA genes to determine microbial diversity index (MDI).
• Spirometry to measure lung function, specifically % predicted forced expiratory volume in 1 second (% predicted FEV1).

Main Results:

• A higher microbial diversity index (MDI) was significantly associated with a decrease in % predicted FEV1.
• Each unit increase in MDI correlated with a 0.71% loss in % predicted FEV1.
• Statistical analysis adjusted for potential confounding factors.

Conclusions:

• Subgingival microbial diversity is associated with reduced respiratory function in this cohort of men.
• Findings suggest a potential link between oral microbiome status and lung health.
• Further research is warranted to elucidate the mechanisms underlying this association.