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Updated: Nov 12, 2025
A Mouse Model for Pathogen-induced Chronic Inflammation at Local and Systemic Sites
Published on: August 8, 2014
Lactic acid bacteria prevent both periodontitis and atherosclerosis exacerbated by periodontitis in spontaneously
Ryoki Kobayashi1, Tomomi Hashizume-Takizawa1, Tomoko Kurita-Ochiai1
1Department of Microbiology and Immunology, Nihon University School of Dentistry at Matsudo, Matsudo, Japan.
Background And Objective:
Recent studies have shown a link between periodontal disease and cardiovascular disease. We have previously reported that oral administration of Porphyromonas gingivalis (Pg) accelerates atherosclerosis in apolipoprotein E-deficient spontaneously hyperlipidemic (Apoeshl ) mice. This study evaluated the potential of lactic acid bacteria (LAB) to change the intestinal flora changes induced by periodontopathic bacteria and to prevent/slow down the development of atherosclerosis.
Methods:
Lactobacillus gasseri O3-2 (Lg) was orally intubated in Apoeshl mice for 5 weeks. Three weeks after oral intubation, the mice were orally infected with Pg for 2 weeks.
Results:
Thirty days after the last infection with Pg, Lg+Pg-treated mice showed a significant reduction in alveolar bone loss compared to the Pg-treated group. The Lg treatment restored the Pg-induced intestinal flora disturbance to normal. Furthermore, a significant decrease in atherosclerotic plaque lesion size and suppressed inflammatory cytokine production in the aorta were detected in the Lg + Pg-treated group. In contrast, blood concentrations of TMAO, histidine, and carnitine were enhanced by the Lg treatment but decreased by Lg + Pg treatment.
Conclusion:
These results suggest that oral Lg treatment is effective in preventing periodontitis and atherosclerosis.
