Proatherogenic pathways leading to vascular calcification

Michael J Mazzini1, P Christian Schulze

  • 1Department of Cardiology, Boston University Medical Center, Boston, MA 02118-2526, USA.

Insights

Vascular calcification, once seen as a late-stage atherosclerosis marker, is now recognized in early stages. This review details molecular pathways of vascular calcification and its role in cardiovascular disease progression.

Area of Science:

  • Cardiovascular research
  • Vascular biology
  • Atherosclerosis pathogenesis

Background:

  • Cardiovascular disease (CVD) is a leading cause of death globally.
  • Atherosclerosis, a primary underlying condition, involves vascular injury, inflammation, oxidative stress, and calcification.
  • Vascular calcification, previously considered a late-stage degenerative process, is now implicated in early atherosclerosis and clinical events.

Purpose of the Study:

  • To review current knowledge on molecular pathways regulating vascular calcification.
  • To explore the relevance of these pathways in the progression of cardiovascular disease.

Main Methods:

  • Literature review of recent studies on vascular calcification.
  • Analysis of molecular signaling cascades and regulatory molecules involved in vascular calcification.

Main Results:

  • Vascular calcification occurs in early atherosclerosis and correlates with inflammation and disease progression.
  • Key molecular regulators include osteopontin, osteoprogerin, leptin, and matrix Gla protein.
  • Highly regulated molecular signaling pathways control vascular calcification.

Conclusions:

  • Vascular calcification is an active, regulated process crucial to atherosclerosis progression.
  • Understanding these molecular pathways is vital for developing new therapeutic strategies for cardiovascular disease.

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...
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...
Extrinsic and Intrinsic Pathways of Hemostasis01:20

Extrinsic and Intrinsic Pathways of Hemostasis

Blood clotting or coagulation involves extrinsic and intrinsic pathways, which ultimately merge into the common pathway, forming a fibrin clot.
The Extrinsic Pathway
The extrinsic pathway of coagulation is typically initiated by tissue damage that exposes blood to tissue factor (TF), a protein released by the damaged tissue cells outside the blood vessels—this interaction with TF triggers biochemical reactions involving specific clotting factors. The key player here is Factor VII, which forms a...
Peripheral Artery Disease I: Introduction01:30

Peripheral Artery Disease I: Introduction

Peripheral artery disease (PAD) predominantly results from atherosclerosis, which involves the accumulation of fatty deposits, or plaques, within the walls of arteries. This causes them to narrow and harden, significantly reducing blood flow. PAD predominantly affects the legs, particularly the arteries supplying the thighs and calves. In rare cases, it may involve other arteries, including those in the arms.Etiology of PAD:The principal cause of PAD is atherosclerosis, which results from fatty...
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...
Regulation of Angiogenesis and Blood Supply01:24

Regulation of Angiogenesis and Blood Supply

Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits.  Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl hydroxylase and factor...