Chronic infections and atherosclerosis

Z Kis1, K Burián, D Virók

  • 1Department of Medical Microbiology, Szeged University, Dóm tér 10, H-6720 Szeged, Hungary.

Insights

Traditional risk factors don't explain atherosclerosis (AT) in half of cases. This study explores infectious agents and inflammation as potential additional causes of AT, seeking to understand the disease's full scope.

Area of Science:

  • Cardiovascular Science
  • Immunology
  • Infectious Disease

Background:

  • Atherosclerosis (AT) development is not fully explained by traditional risk factors like hypercholesterolemia, hypertension, and smoking.
  • Approximately 50% of AT cases lack clear links to established risk factors, necessitating the investigation of alternative causes.
  • Infectious agents and inflammation are hypothesized as potential contributors to the atherogenic process.

Purpose of the Study:

  • To investigate the role of infectious agents as potential initiators or contributors to atherosclerosis.
  • To explore the involvement of inflammation, whether infection-related or independent, in mediating the atherogenic process.
  • To identify additional risk factors beyond traditional ones for atherosclerosis development.

Main Methods:

  • Literature review and synthesis of existing research on atherosclerosis etiology.
  • Analysis of studies investigating the link between specific infectious agents and cardiovascular disease.
  • Examination of evidence supporting the role of inflammatory pathways in atherogenesis.

Main Results:

  • Infectious agents have been implicated in the initiation and progression of atherosclerosis.
  • Inflammatory responses, triggered by infections or other stimuli, are recognized as key mediators in the development of atherosclerotic lesions.
  • The study highlights the multifactorial nature of atherosclerosis, involving both conventional and non-conventional risk factors.

Conclusions:

  • Infectious agents and inflammation represent significant, yet often overlooked, factors in atherosclerosis pathogenesis.
  • Understanding these additional risk factors is crucial for developing more comprehensive prevention and treatment strategies for atherosclerosis.
  • Further research is warranted to elucidate the precise mechanisms by which infections and inflammation contribute to atherosclerosis.

Related Concept Videos

Inflammation01:38

Inflammation

Overview
Atherosclerosis I: Introduction01:30

Atherosclerosis I: Introduction

Atherosclerosis is a progressive disorder characterized by the buildup of plaques on the arterial inner wall, causing them to narrow and harden over time. These plaques comprise lipids, calcium, blood components, carbohydrates, and fibrous tissue. The process primarily affects the intima of large and medium-sized arteries, reducing blood flow in any artery.Etiology and risk factorsThe cause of atherosclerosis is multifactorial, involving a complex interplay among endothelial injury, lipid...
Atherosclerosis II: Clinical Manifestations and Diagnostic Tests01:27

Atherosclerosis II: Clinical Manifestations and Diagnostic Tests

Atherosclerosis is a progressive disorder that leads to the thickening and narrowing of arterial walls due to plaque buildup. This condition can cause various symptoms depending on the arteries affected:Coronary Artery Disease (CAD): This condition affects the coronary arteries and may lead to chest pain (angina), shortness of breath (dyspnea), heart attacks, and other heart disease symptoms.Cerebrovascular Disease: This affects blood flow to the brain, causing transient ischemic attacks (TIAs)...
Chronic Inflammation: Introduction01:12

Chronic Inflammation: Introduction

Chronic inflammation is a prolonged, dysregulated immune response that persists for weeks to years when the inciting stimulus is difficult to eradicate or when self‑antigens drive ongoing reactivity. Morphologically, it is defined by mononuclear cell infiltration, progressive tissue destruction, and concurrent attempts at healing via angiogenesis and fibrosis. Compared with acute inflammation, edema is less prominent while cellular infiltration predominates; triggers include persistent...
Chronic Pancreatitis I: Introduction01:25

Chronic Pancreatitis I: Introduction

Chronic pancreatitis is a long-standing, relapsing inflammation of the pancreas, characterized by irreversible damage to the gland. It results in progressive destruction of the pancreatic parenchyma, fibrosis, and eventual loss of both exocrine and endocrine function. The disease may evolve gradually after multiple episodes of acute pancreatitis or develop independently.EtiologyChronic pancreatitis can arise from a variety of causes:Alcohol use is the leading cause, accounting for 70–80% of...
Chronic Pancreatitis II: Pathophysiology01:21

Chronic Pancreatitis II: Pathophysiology

Chronic pancreatitis is a progressive and irreversible inflammation of the pancreas, most often caused by long-term alcohol abuse, but it can also be related to ductal obstruction, smoking, or genetic factors.Chronic pancreatitis occurs when the pancreas is repeatedly exposed to harmful agents like alcohol, smoking, ductal obstruction, or genetic predisposition. These factors lead to the release of toxic metabolites and inflammatory cytokines, sustaining chronic inflammation in the pancreatic...