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Int Endod J. 2021 Oct 29; doi: 10.1111/iej.13655. Epub 2021 Oct 29.

Chronic apical periodontitis exacerbates atherosclerosis in apolipoprotein E-deficient mice and leads to changes in the diversity of gut microbiota.

International endodontic journal

Guowu Gan, Beibei Lu, Ren Zhang, Yufang Luo, Shuai Chen, Huaxiang Lei, Yijun Li, Zhiyu Cai, Xiaojing Huang

Affiliations

  1. Fujian Key Laboratory of Oral Diseases & Fujian Provincial Engineering Research Center of Oral Biomaterial & Stomatological Key lab of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China.
  2. Institute of Stomatology, Research Center of Dental and Craniofacial Implants, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, China.
  3. Department of Stomatology, Fujian Medical University Union Hospital, Fuzhou, China.

PMID: 34714545 DOI: 10.1111/iej.13655

Abstract

AIM: To investigate the impact of chronic apical periodontitis (CAP) on atherosclerosis and gut microbiota by establishing a Porphyromonas gingivalis (P. gingivalis)-induced CAP in an apolipoprotein E-deficient (apoE

METHODOLOGY: Twenty-eight male apoE

RESULTS: CAP was observed in 98.2% of molars. A significant increase in atherosclerotic plaque formation in the aortic arches was found in the CAP groups (CAP: 2.001% ± 0.27%, control: 0.927% ± 0.22%, p = .005). No significant difference was observed between sevum level of HDL-C (CAP: 2.295 ± 0.31 mmol/L, Control: 3.037 ± 0.55 mmol/L, p = .264) or LDL-C (CAP: 17.066 ± 3.95 mmol/L, Control: 10.948 ± 1.69 mmol/L, p = .177) in CAP group and Control group. There were no significant differences in TG (CAP: 1.076 ± 0.08 mmol/L, control: 1.034 ± 0.13 mmol/L, p = .794) or TC (CAP: 6.372 ± 0.98 mmol/L, control: 6.679 ± 0.75 mmol/L, p = .72) levels between the two groups (p > .05). The alpha diversity was elevated in the CAP group. In terms of beta diversity, the CAP and control groups were clearly distinguished by the microbial community.

CONCLUSION: In a mouse experimental model, pulp infection with P. gingivalis -induced CAP, thus aggravating the development of atherosclerosis. Meanwhile, CAP increased alpha diversity and altered the beta diversity of the gut microbiota.

© 2021 The Authors. International Endodontic Journal published by John Wiley & Sons Ltd on behalf of British Endodontic Society.

Keywords: Porphyromonas gingivalis ; animal model; atherosclerosis; chronic apical periodontitis; gut microbiota

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