Transcriptomic Vascular and Endothelial Changes in Experimental Periodontitis in Nonhuman Primates

Area of Science:

• Periodontal disease research
• Vascular biology
• Transcriptomics

Background:

• The molecular mechanisms underlying periodontal vasculature changes during disease progression are not fully understood.
• Periodontal lesions involve alterations in blood vessel integrity and function.

Purpose of the Study:

• To investigate transcriptomic changes in periodontal vasculature during disease initiation and progression.
• To identify molecular pathways and bacterial correlations involved in periodontal vascular alterations.

Main Methods:

• Utilized a nonhuman primate model of experimental ligature-induced periodontitis.
• Analyzed transcriptomic responses related to vasculature and endothelial cell activities across the lifespan.
• Correlated gene expression changes with specific bacterial species.

Main Results:

• Identified age-related effects on angiogenesis and growth factor signaling pathways in healthy tissues.
• Observed significant alterations in vascular/endothelial gene expression during disease initiation and progression.
• Found strong correlations between specific bacteria (e.g., P. gingivalis) and changes in vascular genes (e.g., CCL2, TGFB2).
• Determined that the disease process is the primary driver of vascular/endothelial cell transcriptome changes.

Conclusions:

• Vascular and endothelial cell processes change with age and are further altered during periodontal disease.
• Significant vascular changes in gingival tissues contribute to the persistent inflammation seen in periodontitis.
• Transcriptomic profiling reveals key molecular events in periodontal vasculature during disease development.