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Published on: April 3, 2026
Search for genomic sequences of microbial agents in atherosclerotic plaques
Abstract:
Atherosclerosis is a complex, multifactorial disease. Several studies have reported a possible association between infection with microbial agents and atherogenesis. Chlamydia pneumoniae (C. pneumoniae), Herpes Simplex Virus 1 (HSV1), Human Cytomegalovirus (HCMV), and Epstein Barr Virus (EBV) have been widely investigated for their possible role in atherosclerosis development, but the results obtained to date are contradictory. The aim of our study is to search DNA of the aforementioned infectious agents by means of Quantitative Real Time PCR in atherosclerotic plaques from carotid arteries obtained from 17 patients. Genomic sequences of C. pneumoniae, HSV1, HCMV were not found in any atherosclerotic lesion. Therefore, our results do not support the hypothesis of an association between these infectious agents and atherosclerosis. Conversely, three patients were found to be positive for EBV DNA, thus indicating that, at least in a limited number of patients, EBV could play a role in atherogenesis.
Insights
This study investigated infectious agents in atherosclerosis, finding no link for Chlamydia pneumoniae, HSV1, or HCMV. However, Epstein Barr Virus (EBV) DNA was detected in some patients, suggesting a potential role in atherosclerosis development.
Area of Science:
- Cardiovascular Research
- Infectious Disease Epidemiology
- Molecular Pathology
Background:
- Atherosclerosis is a complex disease potentially linked to microbial infections.
- Previous research on Chlamydia pneumoniae, HSV1, HCMV, and EBV in atherogenesis yielded contradictory results.
- This study aimed to investigate the presence of these specific infectious agents in atherosclerotic plaques.
Discussion:
- Quantitative Real-Time PCR was used to detect microbial DNA in carotid artery atherosclerotic plaques from 17 patients.
- Genomic sequences of C. pneumoniae, HSV1, and HCMV were notably absent in all analyzed lesions.
- The findings do not support a causal association between C. pneumoniae, HSV1, or HCMV and atherosclerosis in this cohort.
Key Insights:
- Epstein Barr Virus (EBV) DNA was detected in three out of 17 patients with atherosclerotic plaques.
- The presence of EBV DNA suggests a potential role for this virus in the pathogenesis of atherosclerosis in a subset of individuals.
- The study highlights the need for further investigation into the specific mechanisms by which EBV may contribute to atherogenesis.
Outlook:
- Further research is warranted to elucidate the precise mechanisms linking EBV to atherosclerosis.
- Investigating larger patient cohorts and employing different detection methodologies could strengthen these findings.
- Understanding the role of specific infectious agents like EBV may lead to novel therapeutic strategies for atherosclerosis prevention and treatment.
Related Concept Videos
Modern Molecular Taxonomy
Atherosclerosis I: Introduction
Microbial Phylogeny
Atherosclerosis II: Clinical Manifestations and Diagnostic Tests
Pharmacogenomics: Identification of New Drug Targets
Applications of Molecular Taxonomy

