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- W2742893838 abstract "Background: The reported incidence of mesh infection in contaminated operative fields is as high as 30% regardless of material used. Our laboratory previously showed that augmenting acellular bioprosthetic mesh with allogeneic mesenchymal stem cells (MSC) enhances resistance to bacterial colonization in vivo and preserves mesh integrity. This study’s aim was to determine whether augmentation of non-crosslinked porcine dermis (Strattice) with commercially available, cryopreserved, viable MSC-containing human placental tissue (Stravix) similarly improves infection resistance after inoculation with Escherichia coli ( E. coli ) using an established mesh infection model. Methods: Stravix was thawed per manufacturer’s instructions and 2 samples were tested for cell viability using a Live/Dead Cell assay at the time of surgery. Rats (N = 20) were implanted subcutaneously with 1 piece of Strattice and 1 piece of hybrid mesh (Strattice + Stravix sutured at the corners). Rats were inoculated with either sterile saline or 10 6 colony-forming units of E. coli before wound closure (n = 10 per group). At 4 weeks, explants underwent microbiologic and histologic analyses. Results: In E. coli –inoculated animals, severe or complete mesh degradation concurrent with abscess formation was observed in 100% (10/10) hybrid meshes and 90% (9/10) Strattice meshes. Histologic evaluation determined that meshes inoculated with E. coli exhibited severe acute inflammation, which correlated with bacterial recovery ( P < 0.001). Viability assays performed at the time of surgery failed to verify the presence of numerous live cells in Stravix. Conclusions: Stravix cryopreserved MSC-containing human umbilical tissue does not improve infection resistance of a bioprosthetic mesh in vivo in rats after inoculation with E. coli ." @default.
- W2742893838 created "2017-08-17" @default.
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- W2742893838 date "2017-08-01" @default.
- W2742893838 modified "2023-09-25" @default.
- W2742893838 title "Evaluation of a Novel Hybrid Viable Bioprosthetic Mesh in a Model of Mesh Infection" @default.
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- W2742893838 doi "https://doi.org/10.1097/gox.0000000000001418" @default.
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