[Application of Modified Polyether Sulfone Microspheres in Hyperbilirubinemia]

Area of Science:

• Biomaterials Science
• Chemical Engineering
• Medical Device Development

Context:

• Liver failure necessitates efficient bilirubin removal to prevent toxicity.
• Current adsorbent materials may lack optimal mechanical properties or biocompatibility.
• Developing advanced materials for extracorporeal liver support is crucial.

Purpose:

• To design and synthesize novel polyether sulfone (PES) microspheres modified with quaternary ammonium pyridine for enhanced bilirubin adsorption.
• To evaluate the morphology, basic properties, and bilirubin adsorption efficiency of the modified microspheres.
• To assess the blood biocompatibility, including clotting time and blood cell counts, of the developed adsorbent material.

Summary:

• Modified polyether sulfone microspheres (PES/p(4-VP-co-N-VP)@6) were prepared using phase conversion and electrostatic spraying.
• The microspheres exhibited a loose porous structure and achieved a bilirubin removal rate of 94.91±0.73% after 180 minutes of static adsorption.
• Biocompatibility tests showed no significant changes in red and white blood cell counts, and a statistically significant increase in activated partial thromboplastin time (APTT) compared to controls.

Impact:

• The developed microspheres demonstrate high efficiency in bilirubin adsorption, superior mechanical properties, and good thermal stability.
• These microspheres exhibit favorable blood biocompatibility, indicating potential for clinical use.
• The findings suggest a promising new adsorbent for the clinical treatment of patients suffering from liver failure.