Related Experiment Video
Updated: Jul 1, 2026
18:30
RNA-seq Analysis of Transcriptomes in Thrombin-treated and Control Human Pulmonary Microvascular Endothelial Cells
Published on: February 13, 2013
C-reactive protein isoforms differ in their effects on thrombus growth
Blanca Molins1, Esther Peña, Gemma Vilahur
1Cardiovascular Research Center, CSIC-ICCC, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain.
Arteriosclerosis, Thrombosis, and Vascular Biology
|September 13, 2008
Summary
Modified C-reactive protein (mCRP) significantly enhances platelet adhesion and thrombus growth under arterial flow. Native C-reactive protein (natCRP) showed no effect, suggesting mCRP has a prothrombotic role.
Area of Science:
- Cardiovascular Biology
- Hemostasis and Thrombosis
- Inflammation and Immunology
Background:
- C-reactive protein (CRP) is an acute-phase protein involved in inflammation.
- Distinct isoforms of CRP, native (natCRP) and modified (mCRP), may have different biological functions.
- Understanding CRP's role in thrombosis is crucial for cardiovascular disease management.
Purpose of the Study:
- To investigate the differential impact of natCRP and mCRP on platelet adhesion and thrombus formation.
- To determine the prothrombotic potential of mCRP compared to natCRP under arterial flow conditions.
Main Methods:
- Perfusing blood over type I collagen at high shear rates (1500 s(-1)).
- Evaluating platelet deposition and thrombus growth using confocal microscopy.
- Assessing platelet activation markers (P-selectin, CD36, CD63) via flow cytometry and immunohistochemistry.
Main Results:
- mCRP significantly increased platelet adhesion and thrombus growth, both when incubated with blood and when immobilized.
- natCRP did not affect platelet adhesion or thrombus growth.
- mCRP upregulated P-selectin and CD36 on platelets, indicating enhanced activation, without affecting CD63 or PAC-1 binding.
Conclusions:
- Modified CRP (mCRP) exhibits a prothrombotic phenotype, promoting platelet deposition and thrombus growth under arterial flow.
- Native CRP (natCRP) does not appear to influence thrombus formation under these conditions.
- These findings highlight the distinct roles of CRP isoforms in thrombosis.
Related Concept Videos
01:16Clot Retraction and Fibrinolysis
After a fibrin clot is formed, the next step is clot retraction, a vital process facilitated by platelet contractile proteins, such as actin and myosin. These proteins pull the fibrin strands closer together and condense the clot. This action reduces the size of the clot, creating a smaller, denser structure that effectively seals off the damaged vessel. Clot retraction consolidates the clot and helps with wound healing by bringing the edges of the damaged blood vessel closer together.
01:17Intracellular Signaling Affects Focal Adhesions
Integrins act both as extracellular input receivers and as intracellular processing activators. As their name suggests, integrins are entirely integrated into the membrane structure. Their hydrophobic membrane-spanning regions interact with the phospholipid bilayer's hydrophobic region. These membrane receptors provide extracellular attachment sites for effectors like hormones and growth factors. They activate intracellular response cascades when their effectors are bound and active.
Some...
Some...
01:19Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers
Cardiac biomarkers are critical in diagnosing, prognosing, and managing cardiovascular diseases. Routine measurement of specific biomarkers such as B-type natriuretic peptide (BNP), C-reactive protein (CRP), and homocysteine (Hcy) is common practice in clinical settings to evaluate heart function and predict cardiovascular events.
These markers indicate stress or strain on the heart muscle:
Natriuretic Peptides (BNP)
Cardiac myocytes produce these hormones in response to ventricular stretching...
These markers indicate stress or strain on the heart muscle:
Natriuretic Peptides (BNP)
Cardiac myocytes produce these hormones in response to ventricular stretching...
01:30Anticoagulant Drugs: Low-Molecular-Weight Heparins
Hemostasis is a crucial process that prevents excessive blood loss from damaged blood vessels. It involves various mechanisms such as vasoconstriction, platelet adhesion and activation, and fibrin formation. The importance of each mechanism depends on the type of vessel injury. In contrast, thrombosis is the abnormal formation of a blood clot within the blood vessels, leading to potential complications if the clot obstructs blood flow. Thrombosis can be caused by increased coagulability of the...