[Diminished vascular density in the aortic wall. Morphological and functional characteristics of atherosclerosis]

Cuauhtémoc Acoltzin Vidal1, Irma Maldonado Villaseñor, Leonardo Rodríguez Cisneros

  • 1Centro de Investigaciones Biomédicas, Universidad de Colima. jose_rafael_c_acoltzin@yahoo.com

Insights

Vascular density is significantly lower in atherosclerotic aortic walls compared to healthy aorta. This reduced vascularity may initiate the pathological process of atherosclerosis.

Area of Science:

  • Cardiovascular Biology
  • Atherosclerosis Research
  • Vascular Histology

Context:

  • Atherosclerosis is characterized by irregular arterial wall changes.
  • The role of vasa vasorum in atherosclerosis is not fully understood.
  • Human aortic wall structure and vascularization vary across disease states.

Purpose:

  • To quantify differences in vascular wall and vasa vasorum thickness.
  • To analyze vascular density in healthy versus atherosclerotic human aorta.
  • To investigate the relationship between atherosclerosis and vascular supply.

Summary:

  • Significant differences in intima and media thickness were observed between healthy and diseased aortic walls.
  • Vascular density was markedly higher in healthy aortic fragments compared to diseased areas.
  • A stronger correlation between vessel number and vascular segment length was found in healthy aorta.

Impact:

  • Findings suggest reduced vascular density in atherosclerotic aorta may initiate the disease.
  • This study provides quantitative histological data on aortic wall changes in atherosclerosis.
  • Highlights the importance of vasa vasorum in maintaining aortic health.
Abstract

Related Concept Videos

Arteries and Arterioles01:16

Arteries and Arterioles

Arteries, the vasculature responsible for transporting blood from the heart, possess robust walls capable of enduring the elevated pressures exerted by the heartbeat. Arteries near the heart are especially thick-walled and enriched with elastic fibers across their three tunics, classifying them as elastic or conducting arteries. These arteries, usually with a diameter exceeding 10 mm, are characterized by their ability to dilate in response to the blood pumped from the heart's ventricles and...
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...
Atherosclerosis II: Clinical Manifestations and Diagnostic Tests01:27

Atherosclerosis II: Clinical Manifestations and Diagnostic Tests

Atherosclerosis is a progressive disorder that leads to the thickening and narrowing of arterial walls due to plaque buildup. This condition can cause various symptoms depending on the arteries affected:Coronary Artery Disease (CAD): This condition affects the coronary arteries and may lead to chest pain (angina), shortness of breath (dyspnea), heart attacks, and other heart disease symptoms.Cerebrovascular Disease: This affects blood flow to the brain, causing transient ischemic attacks (TIAs)...
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...
Structure of Blood Vessels01:15

Structure of Blood Vessels

Blood is circulated throughout the human body through a network of blood vessels called the circulatory system. This system includes arteries that transport blood from the heart to various body parts. These arterial pathways divide into smaller vessels until they reach the arterioles, which further split into capillaries. It is within these minuscule capillaries that the exchange of nutrients and waste products takes place. After this exchange, the blood is collected by venules, which fuse to...
Anatomy of the Circulatory System02:03

Anatomy of the Circulatory System

The human circulatory system consists of blood, blood vessels that carry blood away from the heart, around the body, and back to the heart, and the heart itself, which acts as a central pump. The systemic circuit supplies blood to the whole body, the coronary circuit supplies blood to the heart, and the pulmonary circuit supplies blood flow between the heart and lungs.