Peer-reviewed veterinary case report
New hernia mesh helps prevent surgery recurrence and improves imaging
By Xiao Y et al.·2026·Department of Pharmacy, China·View original on Europe PMC →
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Original publication title: A versatile hernia mesh for abdominal wall reconstruction with fibrosis suppression and non-invasive monitoring capabilities.
- Species:
- rodent
Plain-English summary
Researchers have developed a new type of mesh for repairing hernias that helps prevent scar tissue from forming and allows for easier monitoring after surgery. This mesh is made from a special material that can deliver medication to reduce scar tissue and can be seen clearly on imaging tests. In tests with rats, this new mesh reduced the amount of contraction that usually happens after surgery by about 47% compared to standard meshes, which means it could help improve healing. The mesh also showed a better balance of collagen types, which is important for proper healing. Overall, this new mesh appears to be a promising option for improving the success of hernia repairs.
Abstract
Postoperative recurrence after incisional hernia repair remains a significant clinical challenge, with mesh contraction from the fibrotic foreign body response as an important contributing factor. Meanwhile, the inherent radiolucency of standard polypropylene (PP) meshes hinders postoperative imaging assessment. To address this, we developed a versatile mesh, SB431542@MPDA-PP, by functionalizing a medical-grade PP mesh with mesoporous polydopamine (MPDA) nanoparticles for localized drug delivery and intrinsic photoacoustic (PA) imaging. The mesh achieved high encapsulation loading (97.13%) and sustained release of SB431542, a TGF-β receptor inhibitor. It suppressed TGF-β1 secretion, epithelial-mesenchymal transition (EMT), and pro-fibrotic responses in human peritoneal mesothelial cells in vitro. In a rat model, the mesh reduced contraction by approximately 47.4% at 3 months compared to standard PP, with attenuated collagen deposition and a favorable collagen I/III ratio. Mechanistically, SB431542 release inhibited the TGF-β1/Smad axis, reversed EMT, and suppressed myofibroblast activation. Furthermore, the MPDA coating enabled clear, non-invasive PA visualization (>96% compliance). This integrated platform simultaneously mitigates fibrosis and enables postoperative surveillance, offering a promising strategy to improve hernia repair outcomes.
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Search related cases →Original publication on Europe PMC: https://europepmc.org/article/MED/41935720