What question did this study set out to answer?

The study aims to develop a ROS-responsive heparin nanogel for improved properties of bioprosthetic heart valves.

January 10, 2026Journal of Materials Chemistry B0 citations

A ROS-responsive drug-conjugated heparin biomimetic nanogel for enhancing anticoagulant, antibacterial, and anti-calcification properties of bioprosthetic heart valves

MCMing ChenArmy Medical University SLShufen LiSichuan University TQTianyi QuSichuan University

Key Result

ROS-responsive heparin nanogels enhance anticoagulant, antibacterial, and anti-calcification properties of bioprosthetic heart valves.

Key Points

The study aims to develop a ROS-responsive heparin nanogel for improved properties of bioprosthetic heart valves.
Synthesis of heparin-based nanogels responsive to reactive oxygen species (ROS)
Conjugation of ofloxacin to the nanogel for targeted drug release
Evaluation of anticoagulant, antibacterial, and anti-calcification properties in vitro
Nanogels demonstrated significantly enhanced anticoagulant activity compared to controls
A substantial reduction in bacterial adhesion was observed, preventing endocarditis
Improved anti-calcification effects were noted, suggesting better valve longevity

Structured PICO

Does a ROS-responsive drug-conjugated heparin biomimetic nanogel coating improve anticoagulant, antibacterial, and anti-calcification properties of bioprosthetic heart valves in preclinical models?

Population

Preclinical models including HUVECs, Raw 264.7 macrophages, rabbit and porcine blood, E. coli, S. aureus, Sprague-Dawley rats, and New Zealand white rabbits.

Intervention

ROS-responsive drug-conjugated heparin biomimetic nanogel (Glut-NP-OFL) coating on glutaraldehyde-crosslinked bovine pericardium.

Comparator

Uncoated glutaraldehyde-crosslinked bovine pericardium (Glut) and/or nanogel without ofloxacin (Glut-NP).

Outcome

Anticoagulant, antibacterial, and anti-calcification properties, along with endothelialization and inflammation assessment.surrogate

A novel ROS-responsive heparin nanogel coating for bioprosthetic heart valves demonstrates promising anticoagulant, antibacterial, and anti-calcification properties in preclinical models.

Main Result

Absolute Event Rate: 0% vs 0%

Abstract

ROS-responsive heparin nanogels enable targeted ofloxacin release to prevent prosthetic valve endocarditis, offering anticoagulant, antibacterial, and anti-calcification properties.

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