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Systematic Evaluation of Structure-Property-Biocompatibility Relationships of Polyhydroxyalkanoate Copolymers for
Kaijun Huang1, Yaru Cao1, Shuai Zhang1
1Shanxi Key Laboratory for Modernization of TCVM, College of Veterinary Medicine, Shanxi Agricultural University, Taiyuan 030031, China.
Molecules (Basel, Switzerland)
|July 15, 2026
Summary
This study evaluated polyhydroxyalkanoates (PHAs) for veterinary applications. PHBV 15% showed the best biocompatibility, supporting their use in drug delivery and implants.
Area of Science:
- Biomaterials Science
- Polymer Chemistry
- Veterinary Medicine
Background:
- Polyhydroxyalkanoates (PHAs) are biocompatible and biodegradable polyesters.
- Limited data exists on PHA structure-property-performance relationships in veterinary medicine.
Purpose of the Study:
- To comprehensively evaluate five commercial PHA (co)polymers for veterinary applications.
- To correlate PHA chemical structure with material properties and biological performance.
Main Methods:
- In vitro and in vivo studies using poly(3-hydroxybutyrate) (PHB), P34HB (5%, 15%), and PHBV (5%, 15%).
- Material characterization (crystallinity, degradation).
- Cytocompatibility, hemocompatibility, cell migration assays, and murine subcutaneous/intramuscular implantation models.
Main Results:
- Comonomer incorporation reduced crystallinity and accelerated degradation.
- All PHAs exhibited excellent cytocompatibility and hemocompatibility.
- P34HB 5% enhanced endothelial cell migration; PHBV 15% showed minimal inflammatory response and thinnest fibrous capsule in vivo.
Conclusions:
- PHA comonomer ratio influences material properties and biological response.
- PHBV 15% demonstrates superior biocompatibility for potential veterinary uses.
- Results support PHA application in veterinary drug delivery, wound dressings, and implants.
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