Systemic inflammation caused by chronic periodontite in patients victims of acute ischemic heart attack
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Updated: Jun 12, 2026

A Mouse Model for Pathogen-induced Chronic Inflammation at Local and Systemic Sites
Published on: August 8, 2014
Fernando José de Oliveira1, Reinaldo Wilson Vieira, Otávio Rizzi Coelho
1Pharmacology and Surgery Department at Faculty of Medical Sciences at UNICAMP, Campinas, SP, Brazil. fernandoimplantes@hotmail.com
Insights
Severe chronic periodontitis is linked to altered lipid profiles and the presence of periodontal bacteria in coronary arteries of patients with acute ischemic heart disease (AIHD). This highlights a potential oral-cardiac connection.
Area of Science:
- Cardiology
- Periodontology
- Infectious Diseases
Background:
- Infectious and inflammatory processes from distant sites are recognized risk factors for acute ischemic heart disease (AIHD).
- The potential role of chronic periodontitis (CP) in the pathogenesis of AIHD requires further investigation.
Purpose of the Study:
- To investigate the association between chronic periodontitis and acute ischemic heart disease.
- To analyze lipid profiles, hematological parameters, and blood glucose levels in AIHD patients with varying severity of CP.
- To detect the presence of periodontal bacteria in coronary artery tissues of AIHD patients.
Main Methods:
- A cohort of 101 AIHD patients was stratified into three groups based on CP severity: severe CP, mild CP, and edentulous.
- Blood samples were analyzed for lipid profiles, hematological parameters, and blood glucose.
- Coronary artery biopsies from patients with severe CP were examined for the presence of atherosclerotic degeneration and periodontal bacteria DNA.
Main Results:
- Patients with severe CP exhibited elevated triglyceride and LDL levels, and reduced HDL levels compared to those with mild CP.
- Higher blood glucose levels were observed in the severe CP group.
- Periodontal bacteria DNA was detected in 58.8% of coronary artery samples from patients with severe CP.
Conclusions:
- Severe chronic periodontitis is associated with dyslipidemia and hyperglycemia in AIHD patients.
- Periodontal bacteria can translocate to coronary vessels, suggesting a potential mechanism linking CP to AIHD.
Objective:
Infectious and inflammatory processes mediated by bacteria in distant sites have been described as a risk factor for acute ischemic heart disease (AIHD).
Methods:
One hundred one patients with AIHD with and without chronic periodontitis (CP) were included in this study. Patients were admitted to the HC UNICAMP and stratified into three groups: in group 1, we selected patients with severe chronic periodontitis (31 men and 19 women, mean age 55.1 +/- 11.29 years old); the group 2 with mild chronic periodontitis (40 men and 28 women, mean age 54.8 +/- 10.37 years old) and group 3 represented by the toothless (43 men and 20 women, mean age 67.5 +/- 8.55 years old). Blood samples were collected to measure the lipid profiles, hematological and blood glucose levels. In addition, biopsies of seventeen coronary arteries with atherosclerosis and an equal number of internal mammary arteries without atherosclerotic degeneration in group 1 were investigated. Statistical analysis by analysis of variance (ANOVA) and Scheffé test for multiple comparisons was performed.
Results:
Triglyceride and LDL levels were elevated in group 1 than in group 2. HDL were reduced by 20% in group 1 and remained reduced by 8% in toothless. Blood glucose was higher in group 1. DNA of periodontal bacteria was detected in 58.8% of the coronary arteries.
Conclusions:
Patients with (AIHD) and severe chronic periodontitis may have altered lipid profile, as well as microorganisms associated with CP can permeate into coronary vessels.
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