Infectious atherosclerosis: is the hypothesis still alive? A clinically based approach to the dilemma

Area of Science:

• Cardiovascular Medicine
• Infectious Diseases
• Pathophysiology

Background:

• Infections are increasingly recognized as potential contributors to cardiovascular disease (CVD).
• Evidence suggests a role for pathogens such as Chlamydia pneumoniae, influenza virus, and Mycoplasma pneumoniae in atherosclerosis.
• The precise mechanisms by which infections influence vascular health require further elucidation.

Observation:

• A case presentation highlighted a patient with no traditional risk factors for heart disease.
• The patient had an ongoing respiratory infection with Mycoplasma pneumoniae.
• A history of Chlamydia pneumoniae infection was also noted.

Findings:

• The co-occurrence of these infections may trigger pathogenic events in vascular cells and leukocytes within atheromatous lesions.
• This scenario supports the hypothesis that specific infections can potentiate the development or progression of atherosclerotic cardiovascular disease (CVD).
• Pro-inflammatory pathogens like Mycoplasma pneumoniae, combined with prior exposure to atherogenic microorganisms like Chlamydia pneumoniae, appear significant.

Implications:

• This research underscores the importance of considering infectious agents in the etiology of CVD, particularly in atypical cases.
• Further investigation into the mechanisms by which infections influence vascular health is warranted.
• Identifying and targeting infectious triggers could offer novel therapeutic avenues for preventing and managing atherosclerotic cardiovascular disease.