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Related Concept Videos

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...
Extracellular Matrix01:26

Extracellular Matrix

Unlike epithelial tissue, which is composed of cells closely packed with little or no extracellular space in between, connective tissue cells are dispersed in a matrix. This extracellular matrix (ECM) is composed of fibrous proteins like collagen, elastin, and fibronectin in a ground substance consisting of interstitial fluid, cell adhesion proteins, and proteoglycans. The proteoglycans form a gel-like material in the spaces between cells and provide hydration, buffering, binding, and force...
The Extracellular Matrix01:29

The Extracellular Matrix

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In order to maintain tissue organization, many animal cells are surrounded by structural molecules that make up the extracellular matrix (ECM). Together, the molecules in the ECM maintain the structural integrity of tissue as well as the remarkable specific properties of certain tissues.
Composition of the Extracellular Matrix
The extracellular matrix (ECM) is commonly composed of ground substance, a gel-like fluid, fibrous components, and many structurally and functionally diverse...
The Extracellular Matrix01:42

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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...
Role of Matrix Metalloproteases in Degradation of ECM01:23

Role of Matrix Metalloproteases in Degradation of ECM

Matrix metalloproteases (MMPs) are enzymes involved in the hydrolysis of proteins and glycoproteins of the extracellular matrix. MMPs are essential for the migration and proliferation of cells through the dense matrix network, throughout embryonic development, and throughout morphogenesis. The first MMP activity discovered was a collagenase in a tadpole's tail undergoing metamorphosis. The active collagen deposition and modifications lead to the morphogenesis of tadpoles into the adult body.
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Scanning Electron Microscopy of Macerated Tissue to Visualize the Extracellular Matrix
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Vascular extracellular matrix in atherosclerosis.

Dimitry A Chistiakov1, Igor A Sobenin, Alexander N Orekhov

  • 1From the *Department of Medical Nanobiotechnology, Pirogov Russian State Medical University, Moscow, Russia; †Institute for Atherosclerosis, Skolkovo Innovative Center, Moscow, Russia; ‡Institute of General Pathology and Pathophysiology, Russian Academy of Sciences, Moscow, Russia; and §Russian Cardiology Research and Production Complex, Moscow, Russia.

Cardiology in Review
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Changes in the extracellular matrix (ECM) impact cardiovascular diseases like atherosclerosis. Targeting matrix metalloproteinases (MMPs) offers new diagnostic and therapeutic strategies for cardiovascular repair and tissue engineering.

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Area of Science:

  • Cardiovascular Biology
  • Biomaterials Science
  • Molecular Medicine

Background:

  • The extracellular matrix (ECM) is vital for organ function, and its alterations are linked to cardiovascular diseases such as atherosclerosis, restenosis, and heart failure.
  • ECM components influence vascular cell behavior, contributing to atherosclerotic complications like plaque rupture and calcification.

Purpose of the Study:

  • To explore the role of ECM and matrix metalloproteinases (MMPs) in cardiovascular pathology.
  • To investigate MMPs as biomarkers for atherosclerosis and potential therapeutic targets.
  • To highlight the potential of ECM in vascular tissue engineering and regenerative medicine.

Main Methods:

  • Review of literature on ECM composition and function in cardiovascular health and disease.
  • Analysis of the role of matrix metalloproteinases (MMPs) in ECM remodeling and inflammation.
  • Exploration of MMP inhibitors for diagnostic imaging and therapeutic applications.
  • Assessment of ECM-derived biomaterials for vascular tissue engineering.

Main Results:

  • ECM alterations are central to cardiovascular pathogenesis, affecting vascular cells and leading to complications.
  • MMPs are key regulators of ECM remodeling, with their activity linked to inflammation and cardiovascular risk.
  • MMP inhibitors show promise for imaging MMP activity in atherosclerotic plaques and monitoring therapy response.
  • ECM-based scaffolds offer potential for vascular repair and engineered constructs.

Conclusions:

  • The extracellular matrix plays a critical role in cardiovascular disease development and repair.
  • Matrix metalloproteinases are significant biomarkers and therapeutic targets in atherosclerosis.
  • ECM-derived biomaterials hold promise for advanced vascular tissue engineering and regenerative strategies.