Prenatal development of coronary arteries in the rat: morphologic patterns
1The Medial University of Warsaw, Institute of Biostructure, Department of Pathological Anatomy, Ch&acedil;ubiAskiego 5, 02-004 Warszawa, Poland. aratajska@ib.amwaw.edu.pl
Anatomy and Embryology
|October 20, 1999
Summary
Coronary artery development in rats involves endothelial cell migration and cluster formation, leading to lumen development and connection to the aorta. Smooth muscle differentiation occurs after this connection is established.
Area of Science:
- Developmental biology
- Cardiovascular research
- Histology
Background:
- Coronary artery development is crucial for cardiac function.
- Understanding the spatiotemporal and morphologic patterns of coronary artery development is essential.
Purpose of the Study:
- To investigate the spatiotemporal and morphologic patterns of coronary artery development in prenatal rat hearts.
- To elucidate the cellular origins and differentiation processes involved in coronary artery formation.
Main Methods:
- Immunohistochemistry using Griffonia simplicifolia I lectin and alpha-smooth muscle actin antibody.
- Ultrastructural examination of rat hearts at embryonic day (ED) 14-16.
- Analysis of endothelial cell migration, vascular cluster formation, lumen development, and smooth muscle differentiation.
Main Results:
- Endothelial-like cells penetrated the aortic wall and myocardium by ED14, forming vascular clusters by ED15.
- Coronary artery development proceeded via coalescence of clusters, lumen formation, and aortic connection.
- Embryonic media cells were attracted to vessels by ED15; smooth muscle differentiation began after aortic connection.
Conclusions:
- Coronary arteries develop through a process of endothelial cell invasion, vascular assembly, and subsequent smooth muscle differentiation.
- The timing of aortic connection is critical for initiating smooth muscle development in the coronary artery media.
- This study provides detailed insights into the intricate process of prenatal coronary vascularization in rats.
More Related Videos
Related Concept Videos
01:30Coronary Artery Disease III: Clinical Manifestations
364
Coronary Artery Disease (CAD) is a primary health risk worldwide, leading to significant morbidity and mortality. The condition arises from the buildup of atherosclerotic plaques within the coronary arteries, resulting in diminished blood supply to the heart muscle.The clinical manifestations of CAD vary widely, from asymptomatic stages to severe, life-threatening conditions. Understanding these manifestations is crucial for early diagnosis and effective management.Angina Pectoris: The Warning...
364
01:26Coronary Artery Disease II: Pathophysiology
420
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...
420
01:30Coronary Artery Disease I: Introduction
1.1K
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...
1.1K
01:27Coronary Artery Disease V: Interprofessional Care
249
Interprofessional care for coronary artery disease includes pharmacological therapy and revascularization procedures.Pharmacological therapy for Coronary Artery Disease (CAD) aims to manage symptoms, prevent complications, and improve patient outcomes through various classes of medications:Antiplatelet Agents:Aspirin and Clopidogrel: These medications inhibit platelet aggregation, preventing blood clots, which is crucial for avoiding heart attacks and strokes. Doctors often prescribe these...
249
01:26Coronary Artery Disease IV: Preventive Measures
663
Effective preventive measures for coronary artery disease (CAD) focus on controlling modifiable risk factors, including cholesterol abnormalities and lifestyle changes.Cholesterol ManagementFirst, the Mediterranean diet and the American Heart Association advocate for maintaining low-density lipoprotein (LDL) cholesterol levels below 100 mg/dL, with a more stringent recommendation of below 70 mg/dL for individuals at high risk. LDL cholesterol, often termed "bad cholesterol," can lead to the...
663
01:21Coronary Circulation
7.1K
The heart, an organ critical to survival, gets nourishment not from the blood it pumps but from a separate circulation system known as coronary circulation. This is the shortest circulation in the body and is responsible for supplying the heart with the nutrients it needs to function effectively.
Coronary circulation begins at the base of the aorta, where two main arteries arise—the left and right coronary arteries. These arteries encircle the heart in the coronary sulcus and supply the...
Coronary circulation begins at the base of the aorta, where two main arteries arise—the left and right coronary arteries. These arteries encircle the heart in the coronary sulcus and supply the...
7.1K