Anti-atherosclerotic effects of beta-blockers

G Bondjers1

  • 1Wallenberg Laboratory for Cardiovascular Research, University of Göteborg, Sweden.

European Heart Journal
|August 1, 1994
PubMed

Insights

This review highlights key steps in atherosclerosis development, suggesting beta-blockers, calcium channel blockers, and ACE inhibitors can inhibit this process. Drug selection should consider their impact on atherosclerosis progression.

Area of Science:

  • Cardiovascular Science
  • Pharmacology

Background:

  • Atherosclerosis is a complex disease involving multiple cellular and molecular mechanisms.
  • Understanding these mechanisms is crucial for developing effective therapeutic strategies.

Purpose of the Study:

  • To review the key steps in atherosclerosis development.
  • To evaluate the potential of antihypertensive agents to interfere with these mechanisms.

Main Methods:

  • Review of experimental studies on atherosclerosis.
  • Analysis of the impact of beta-blockers, calcium channel inhibitors, and ACE inhibitors on experimental atherosclerosis.

Main Results:

  • Key steps identified: endothelial injury, adhesion, smooth muscle proliferation, lipid deposition, and hypoxia.
  • Beta-blockers inhibit multiple steps and experimental atherosclerosis, even when initiated later.
  • Calcium channel and ACE inhibitors inhibit adhesion and experimental atherosclerosis when given throughout.

Conclusions:

  • Antihypertensive agents should be chosen based on their ability to impede the atherosclerotic process.
  • Beta-blockers are a primary choice, potentially combined with calcium channel or ACE inhibitors for high-risk patients.

Related Concept Videos

Adrenergic Antagonists: Pharmacological Actions of β-Receptor Blockers01:27

Adrenergic Antagonists: Pharmacological Actions of β-Receptor Blockers

β-receptor blockers significantly impact the cardiovascular system by counteracting catecholamine-induced sympathetic responses. These medications decrease heart rate, contractility, and cardiac output, potentially leading to cardiac depression, life-threatening bradycardia, and death. Therapeutically, β-blockers function as mild antihypertensives and are utilized in treating angina pectoris and cardiac arrhythmias. However, nonselective β-blockers inhibit β2-receptors in...
1.8K
Adrenergic Antagonists: ɑ and β-Receptor Blockers01:31

Adrenergic Antagonists: ɑ and β-Receptor Blockers

Third-generation β-blockers, such as labetalol and carvedilol, represent a significant advancement in managing cardiovascular conditions. Unlike conventional β-blockers, which can induce peripheral vasoconstriction, third-generation drugs block α1 adrenoceptors. This promotes vasodilation through several mechanisms, such as increased nitric oxide production, inhibition of calcium ion entry, opening of potassium ion channels, and antioxidant action. Labetalol, for instance, is...
1.4K
Antihypertensive Drugs: Action of β1 Blockers01:17

Antihypertensive Drugs: Action of β1 Blockers

β1-receptors are primarily located in the heart and kidneys. In cardiac myocytes, these receptors interact with neurotransmitters released by the sympathetic nervous system during heightened activity or danger. As a result, β1-receptors get activated, initiating a series of biochemical processes. Excessive activation of beta receptors due to chronic stress can abnormally increase heart rate and contractility, resulting in high blood pressure or hypertension. To counteract this,...
2.2K
Antihypertensive Drugs: Types of β-Blockers01:28

Antihypertensive Drugs: Types of β-Blockers

β receptors are classified into three subclasses: β1, β2, and β3. β1 receptors are primarily located in the heart and kidneys. When they get activated, they increase heart rate, contractility, and renin release. This process enhances blood pressure and aids in stress management. In contrast, β2 receptors are situated mainly in the lungs, blood vessels, and skeletal muscles. Upon activation, they trigger smooth muscle relaxation, causing bronchodilation and...
2.0K
Heart Failure Drugs: β-Blockers01:22

Heart Failure Drugs: β-Blockers

β-adrenergic antagonists, commonly known as β-blockers, block the effects of sympathetic neurotransmitters such as noradrenaline (NA) and adrenaline (ADR). They have several beneficial effects in heart failure treatment. They reduce heart rate, the force of contraction, and cardiac muscle relaxation. They also slow the atrial-ventricular conduction rate and raise the threshold for arrhythmias. The concentration of β-blockers determines their effects on bronchodilation,...
2.9K
Antianginal Drugs: Nitrates and β-Blockers01:16

Antianginal Drugs: Nitrates and β-Blockers

In cardiovascular health, antianginal drugs combat angina pectoris — a condition marked by chest pain owing to diminished blood flow to the heart.
Organic nitrates,  such as nitroglycerin, play a pivotal role. Once metabolized, they liberate nitric oxide, a molecular marvel. Nitric oxide triggers guanylyl cyclase and augments cGMP production. This biochemical cascade orchestrates the relaxation of vascular smooth muscles, ushering in vasodilation and enhancing coronary blood flow....
1.9K