Differential mononuclear cell activity and endothelial inflammation in coronary artery disease and cardiac syndrome X

Chih-Pei Lin1, Wen-Tsai Lin, Hsin-Bang Leu

  • 1Department of Pathology, Taipei Veterans General Hospital, 201 Shih-Pai Road Section 2, Taipei, Taiwan 11217, ROC.

Insights

Coronary artery disease (CAD) patients show significant endothelial inflammation and mononuclear cell activation. Syndrome X patients have increased superoxide free radicals but minimal inflammation, suggesting preserved metabolic profiles protect against vascular inflammation.

Area of Science:

  • Cardiovascular Medicine
  • Immunology

Background:

  • Coronary artery disease (CAD) is linked to endothelial inflammation and activated circulating mononuclear cells.
  • Coronary microvascular dysfunction (Syndrome X) can cause myocardial ischemia despite normal coronary angiograms.

Purpose of the Study:

  • To investigate mononuclear cell activation and endothelial inflammation in Syndrome X patients.
  • To compare these markers between Syndrome X, CAD, and healthy controls.

Main Methods:

  • Evaluated biochemical parameters, soluble adhesion molecules, superoxide free radicals, and mononuclear cell activity.
  • Included 32 Syndrome X patients, 34 CAD patients, and 17 healthy controls.

Main Results:

  • Syndrome X patients exhibited higher circulating superoxide free radicals than controls and CAD patients.
  • CAD patients showed reduced high-density lipoprotein and increased insulin to glucose ratio.
  • Soluble intracellular adhesion molecule-1 was elevated in both Syndrome X and CAD groups; soluble vascular cell adhesion molecule and von Willebrand factor were elevated in CAD only.

Conclusions:

  • CAD patients demonstrate significant endothelial inflammation and mononuclear cell activation.
  • Syndrome X patients show increased superoxide free radicals but minimal endothelial inflammation and no mononuclear cell activation.
  • Preserved lipid and metabolic profiles in Syndrome X may contribute to reduced vascular inflammation.
Abstract

Related Concept Videos

Coronary Artery Disease II: Pathophysiology01:26

Coronary Artery Disease II: Pathophysiology

Coronary Artery Disease (CAD) originates from a series of events that impair the function of coronary arteries, the blood vessels responsible for delivering oxygen-rich blood to the heart muscle. The pathophysiology of CAD is closely linked to atherosclerosis, a chronic inflammatory and lipid-driven condition affecting the vascular endothelium.1. Endothelial DamageThe process begins with damage to the vascular endothelium, which serves as a protective barrier between the blood and the vessel...
Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations01:19

Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations

The pathophysiology of Acute Coronary Syndrome [ACD] involves several key processes:The main underlying cause of ACD is atherosclerosis, a chronic inflammatory disease characterized by the buildup of lipid-laden plaques within the coronary arteries.As the atherosclerotic plaque grows in the coronary artery, it may become unstable due to the formation of a lipid-rich core and a thin fibrous cap. Inflammatory cells within the plaque, such as macrophages, secrete enzymes that degrade the...
Myocarditis I: Introduction01:21

Myocarditis I: Introduction

Myocarditis is inflammation of the myocardium, which is the muscular layer of the heart.EtiologyMyocarditis has a diverse etiology, including a wide range of infectious and non-infectious causes:Infectious CausesViral: Common viruses include Coxsackie A and B, adenovirus, parvovirus B19, enteroviruses, and influenza A.Bacterial: Examples include infections caused by Streptococcus, Staphylococcus, and Mycoplasma species.Rickettsial: Infections like Rocky Mountain spotted fever can result in...
Coronary Artery Disease I: Introduction01:30

Coronary Artery Disease I: Introduction

Coronary Artery Disease (CAD): An Overview with Scientific InsightsCoronary Artery Disease (CAD), often referred to as C-A-D, is a prevalent blood vessel disorder classified under the broader category of atherosclerosis. Atherosclerosis is a pathological process characterized by the hardening and narrowing of arteries due to the accumulation of atherosclerotic plaques. These plaques are composed of cholesterol, fatty substances, inflammatory cells, calcium, and fibrin, reducing blood flow to...
Acute Coronary Syndrome III: Diagnostic Studies01:30

Acute Coronary Syndrome III: Diagnostic Studies

Diagnosing acute coronary syndrome or ACS begins with a thorough patient history. Notable symptoms include central, crushing chest pain radiating to the left arm, neck, jaw, or back, along with shortness of breath, sweating (diaphoresis), nausea, vomiting, dizziness, and palpitations.It is crucial to note any history of cardiac illnesses and assess risk factors, including age, gender, smoking, hypertension, diabetes, hyperlipidemia, and a sedentary lifestyle.During physical examination, vital...
Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers01:19

Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers

Cardiac biomarkers are critical in diagnosing, prognosing, and managing cardiovascular diseases. Routine measurement of specific biomarkers such as B-type natriuretic peptide (BNP), C-reactive protein (CRP), and homocysteine (Hcy) is common practice in clinical settings to evaluate heart function and predict cardiovascular events.
These markers indicate stress or strain on the heart muscle:
Natriuretic Peptides (BNP)
Cardiac myocytes produce these hormones in response to ventricular stretching...