Related Experiment Video
Updated: Jun 17, 2026

Live-cell Imaging of Platelet Degranulation and Secretion Under Flow
Published on: July 10, 2017
The role of platelet and fibrin ultrastructure in identifying disease patterns
1Department of Anatomy, School of Medicine, Faculty of Health Sciences, University of Pretoria, 0001 Pretoria, South Africa. resia.pretorius @ up.ac.za
Platelets and fibrin play an important role in the coagulation process where they are involved in the maintenance of haemostasis. Many diseases like cancer, thrombotic disease, bleeding disorders, asthma and even conditions like HIV/AIDS are associated with ultrastructural changes in platelets and fibrin, and because of this altered morphology in many diseases, the question now arises whether ultrastructural and morphological analyses of platelets and fibrin networks have a place in contemporary medical research. The present work aims to demonstrate the usefulness of ultrastructural analyses in the broadening of knowledge of disease patterns and suggests that information gained by studying ultrastructure may enhance treatment regimes. We propose an altered haemostasis with changed coagulation factors resulting in a thrombotic event is present in the human body long before the actual event. Thus, by studying the coagulum and platelet profile, preventative actions can be taken. It is therefore concluded that morphology and ultrastructure do indeed have a place in medical research based on the fact that the knowledge obtained through these studies helps in the broadening of knowledge of disease patterns.
Platelets and fibrin play an important role in the coagulation process where they are involved in the maintenance of haemostasis. Many diseases like cancer, thrombotic disease, bleeding disorders, asthma and even conditions like HIV/AIDS are associated with ultrastructural changes in platelets and fibrin, and because of this altered morphology in many diseases, the question now arises whether ultrastructural and morphological analyses of platelets and fibrin networks have a place in contemporary medical research. The present work aims to demonstrate the usefulness of ultrastructural analyses in the broadening of knowledge of disease patterns and suggests that information gained by studying ultrastructure may enhance treatment regimes. We propose an altered haemostasis with changed coagulation factors resulting in a thrombotic event is present in the human body long before the actual event. Thus, by studying the coagulum and platelet profile, preventative actions can be taken. It is therefore concluded that morphology and ultrastructure do indeed have a place in medical research based on the fact that the knowledge obtained through these studies helps in the broadening of knowledge of disease patterns.
Related Concept Videos
Formation of the Platelet Plug
As the injured blood vessel contracts, endothelial cells undergo contraction, revealing collagen fibers in the basement membrane and underlying connective tissue. Furthermore, the plasma membrane of endothelial cells becomes adhesive, preparing the site for platelet adhesion. Platelets...
Structure and Function of Platelets
Platelets are continually replenished, circulating in the bloodstream for 9-12 days before being removed by phagocytes, primarily in the spleen. A microliter of circulating blood contains between 150,000 and 450,000 platelets, with...
Clot Retraction and Fibrinolysis
Anticoagulant Drugs: Low-Molecular-Weight Heparins
Extrinsic and Intrinsic Pathways of Hemostasis
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...
Coronary Artery Disease II: Pathophysiology

