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Fibrinogen adsorption onto macroporous polymeric surfaces: correlation with biocompatibility aspects
1Bose Memorial Research Laboratory, Department of Chemistry, Government Autonomous Science College, Jabalpur, MP 482 001, India. akbmrl@yahoo.co.in
Journal of Materials Science. Materials in Medicine
|June 29, 2007
Summary
This study investigates fibrinogen adsorption on novel polymer networks, correlating protein interactions with blood compatibility. Findings offer insights into designing safer biomaterials for medical applications.
Area of Science:
- Biomaterials Science
- Polymer Chemistry
- Surface Science
Background:
- Protein adsorption on biomaterials is critical for biocompatibility.
- Semi-interpenetrating polymer networks (semi-IPNs) offer tunable properties for biomedical applications.
- Understanding fibrinogen adsorption is key to assessing blood compatibility.
Purpose of the Study:
- To synthesize and characterize semi-IPNs of polyethylene glycol (PEG) and poly(2-hydroxyethyl methacrylate-co-acrylonitrile).
- To investigate fibrinogen (Fgn) adsorption behavior on these semi-IPNs.
- To correlate protein adsorption and water sorption with the antithrombogenic properties of the polymeric surfaces.
Main Methods:
- Semi-IPNs synthesized via copolymerization of 2-hydroxyethyl methacrylate and acrylonitrile with PEG and EGDMA.
- Characterization using FTIR and Environmental Scanning Electron Microscopy (ESEM).
- Evaluation of water sorption capacity, network parameters (M(c), q), and fibrinogen adsorption kinetics and thermodynamics.
- Assessment of antithrombogenic properties under varying pH and ionic strength.
Main Results:
- Successful synthesis and characterization of semi-IPNs with spongy gel morphology.
- Fibrinogen adsorption was dependent on protein solution pH, ionic strength, and semi-IPN chemical architecture.
- Water sorption capacity and network parameters influenced protein adsorption.
- A correlation was established between water sorption, protein adsorption, and antithrombogenic performance.
Conclusions:
- The developed semi-IPNs exhibit tunable properties influencing fibrinogen adsorption.
- Water sorption and specific surface interactions are critical factors in determining blood compatibility.
- These findings provide a basis for designing advanced polymeric biomaterials with improved antithrombogenic characteristics.
