Role of carbon monoxide in vascular diseases

Ignazio Barbagallo1, Giuseppina Marrazzo, Alessandro Frigiola

  • 1Department of Biological Chemistry, Medical Chemistry, and Molecular Biology, University of Catania, Viale Andrea Doria, 6 95125 Catania, Italy.

Insights

Carbon monoxide (CO), a byproduct of heme breakdown, acts as a crucial signaling molecule. This review highlights the protective effects of CO in cardiovascular disease, emphasizing the heme oxygenase-1 (HO-1)/CO system.

Area of Science:

  • Biochemistry
  • Cardiovascular Physiology
  • Molecular Medicine

Background:

  • Heme degradation by heme oxygenase (HO) produces carbon monoxide (CO).
  • CO, initially viewed as a waste product, is recognized as a vital signaling molecule in cardiovascular regulation.
  • The heme oxygenase-1 (HO-1)/CO pathway's role in vascular health warrants further investigation.

Purpose of the Study:

  • To review the protective functions of carbon monoxide (CO) in vascular injury and disease.
  • To explore the significance of the heme oxygenase-1 (HO-1)/CO system in the context of human vascular pathologies.

Main Methods:

  • Literature review focusing on the role of CO in vascular pathophysiology.
  • Analysis of studies investigating the heme oxygenase-1 (HO-1) enzyme and its product, CO.
  • Synthesis of current knowledge on CO's signaling functions in cardiovascular regulation.

Main Results:

  • Carbon monoxide (CO) plays a significant role in regulating cardiovascular functions.
  • CO exhibits protective effects against vascular injury and disease.
  • The HO-1/CO system demonstrates potential therapeutic relevance in vascular conditions.

Conclusions:

  • The heme oxygenase-1 (HO-1)/CO system offers a promising therapeutic target for vascular diseases.
  • Understanding CO's signaling pathways is crucial for developing novel cardiovascular treatments.
  • Further research into the HO-1/CO system's protective mechanisms is essential for human vascular health.

Related Concept Videos

Oxygen Transport in the Blood01:27

Oxygen Transport in the Blood

Hemoglobin (Hb) is a crucial molecule in the human body, consisting of four polypeptide chains, each bound to an iron-containing heme group. This unique structure enables hemoglobin to bind to oxygen, with each molecule capable of combining with four molecules of oxygen, leading to rapid and reversible oxygen loading. When fully loaded with oxygen, it is called oxyhemoglobin, while hemoglobin that has released oxygen is called reduced hemoglobin or deoxyhemoglobin. As hemoglobin binds oxygen,...
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...
Carbon Dioxide Transport in the Blood01:19

Carbon Dioxide Transport in the Blood

Carbon dioxide (CO2) transport in the blood is critical to human physiology. On average, our body cells produce around 200 mL of CO2 per minute, precisely the quantity expelled by the lungs. This process involves the transportation of CO2 from the tissue cells to the lungs in three primary forms.
Forms of CO2 Transport
1. Dissolved in plasma: A small percentage (7-10%) of CO2 is transported and dissolved directly in the plasma.
2. Carbaminohemoglobin: Just over 20% of CO2 is chemically bound to...
Hypoxia01:23

Hypoxia

Hypoxia is a medical condition characterized by an inadequate oxygen supply to body tissues. It typically manifests as a bluish discoloration of the skin and mucosae, especially in fair-skinned individuals, when hemoglobin (Hb) saturation drops below 75%.
Types of Hypoxia
There are four primary types of hypoxia, each resulting from a different cause:
1. Anemic hypoxia: This type occurs due to insufficient oxygen delivery caused by a lack of red blood cells (RBCs) or RBCs with abnormal or...
Cardiovascular Drugs: Classification based on Therapeutic Indications01:18

Cardiovascular Drugs: Classification based on Therapeutic Indications

Cardiovascular diseases, encompassing a range of conditions, can significantly affect the heart's operations and the overall circulatory system. These conditions impair the heart's ability to pump blood, leading to a deficit in oxygen supply to crucial organs. Anomalies in the heart's electrical system, known as arrhythmias, can cause heartbeats to accelerate or slow down. Usually, heart rates increase during physical activity and decrease while resting or sleeping. However, frequent irregular...
COPD: Pathogenesis and Clinical Features01:20

COPD: Pathogenesis and Clinical Features

Chronic obstructive pulmonary disease (COPD) is a group of lung conditions that progressively worsen over time, including chronic bronchitis and emphysema. This cluster of diseases collectively leads to a gradual and irreversible decline in lung function over time.
The primary cause for the onset of COPD is cigarette smoking and exposure to air pollution. These hazardous factors initiate a chain reaction within the lungs, resulting in chronic inflammation, damage to the airways, and a...