Peer-reviewed veterinary case report
How rat tissues react to implants with E. coli infection
By Urazbayev N et al.·2026·Karaganda Medical University·View original on Europe PMC →
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Original publication title: EXPERIMENTAL EVALUATION OF TISSUE RESPONSE TO IMPLANT MATERIALS UNDER ESCHERICHIA COLI CONTAMINATION.
- Species:
- rodent
Plain-English summary
In this study, researchers looked at how different materials used for repairing the abdominal wall in rats responded to infection caused by E. coli bacteria. They used three types of materials: a special tissue from pigs, a synthetic mesh called UltraPro, and preserved brain tissue. After 10 days, all the materials showed signs of inflammation, but the UltraPro mesh had less damage and fewer complications like abscesses compared to the other two. By day 20, the UltraPro mesh continued to show the best healing and integration into the tissue, while the preserved brain tissue had ongoing inflammation. Overall, the UltraPro mesh was found to be the most effective in resisting damage from infection early on.
Abstract
<h4>Aim of the study</h4>To compare tissue responses to xenoperitoneum-derived extracellular matrix (ECM), UltraPro mesh, and preserved dura mater in a rat model of implant-associated Escherichia coli infection.<h4>Methods</h4>Abdominal wall repair was performed in 42 rats using ECM, UltraPro mesh, or preserved dura mater with intraoperative E. coli contamination. Histological and morphometric evaluations were conducted on postoperative days 10 and 20, assessing inflammation, abscess formation, necrosis, neovascularization, and tissue integration.<h4>Results</h4>On day 10, all groups demonstrated acute inflammation. Abscess and necrosis were significantly lower with UltraPro than with ECM and preserved dura mater (p<0.05). By day 20, UltraPro maintained minimal tissue damage and showed the highest neovascularization and tissue integration, while preserved dura mater exhibited persistent inflammation. ECM demonstrated reduced necrosis and signs of tissue remodeling at later stages.<h4>Conclusion</h4>UltraPro mesh provides superior early resistance to infection-related tissue damage, whereas potential advantages of ECM appear context-dependent and are more evident at later stages.
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Search related cases →Original publication on Europe PMC: https://europepmc.org/article/MED/41804148