Fig. 3: Role of oral microbiota in neuropsychiatric disorders.
From: Emerging role of the host microbiome in neuropsychiatric disorders: overview and future directions
The oral microbiota consists viruses, bacteria, archaea, fungi, and protozoa. In comparison to a healthy microbiome (eubiosis), patients with periodontitis exhibit an imbalanced microbiome (dysbiosis), which can contribute to the development of neuropsychiatric disorders. Studies utilizing postmortem brain samples have demonstrated the presence of the oral microbiota in the brains from patients with Alzheimer’s disease (AD) or Parkinson’s disease [105]. Part of the figure was designed using resources from Biorender.com.
