Related Experiment Video
Updated: Jun 5, 2026

A Microfluidic Flow Chamber Model for Platelet Transfusion and Hemostasis Measures Platelet Deposition and Fibrin Formation in Real-time
Published on: February 14, 2017
Heparin cofactor II and thrombin Heparin-binding proteins linking hemostasis and inflammation
1Departments of Pthology and Medicine and the Center for Thrombosis and Hemostasis, School of Medicine, University of North Carolina, Chapel Hill, USA.
Heparin cofactor II specifically inhibits thrombin, a key proteinase in blood coagulation and wound healing. Both molecules interact with glycosaminoglycans and influence inflammatory processes.
Area of Science:
- Biochemistry
- Hematology
- Immunology
Background:
- Alpha-thrombin is a serine proteinase crucial for blood coagulation and wound healing.
- Heparin cofactor II is a serpin that selectively inhibits thrombin.
- Both molecules interact with glycosaminoglycans and act as leukocyte chemoattractants.
Purpose of the Study:
- To review the structure-function characteristics of heparin cofactor II and thrombin.
- To elucidate their physiological roles in integrating hemostatic and inflammatory processes.
Main Methods:
- Literature review focusing on structure-function relationships.
- Analysis of the interaction between heparin cofactor II, thrombin, and glycosaminoglycans.
- Examination of their roles in hemostasis and inflammation.
Main Results:
- Heparin cofactor II specifically inhibits thrombin, unlike other coagulation proteinases.
- Both heparin cofactor II and thrombin bind to negatively charged glycosaminoglycans.
- Both proteins function as chemoattractants for leukocytes.
Conclusions:
- Heparin cofactor II and thrombin share structural and functional similarities.
- Their interactions are vital for linking blood coagulation and inflammatory responses.
More Related Videos
11:18Real-time Imaging of Heterotypic Platelet-neutrophil Interactions on the Activated Endothelium During Vascular Inflammation and Thrombus Formation in Live Mice
Published on: April 2, 2013
13:08Measurement of Factor V Activity in Human Plasma Using a Microplate Coagulation Assay
Published on: September 9, 2012
Related Concept Videos
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...
Introduction to Hemostasis
The three phases of hemostasis involve many clotting factors present in plasma and several substances released by platelets and injured tissue cells. It is a fast, localized, and...
Coagulation
During the coagulation phase, clotting factors, or procoagulants, play a vital role in initiating and progressing the coagulation cascade. This cascade is a series of reactions...
Coagulation
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...