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- W2000752203 abstract "Abstract Objectives: To study the feasibility of urethral reconstruction with two urethroplasty techniques using an elastin and collagen heterograft in rabbits. Materials and Methods: Fifty‐two male rabbits were studied. Two types of injury, (1) a 1.5 ×× 0.6 cm 2 semicircumferential defect; (2) a 1.5 cm segmental defect of the penile urethra, were created and repaired using size‐matched elastin and collagen patches or tubed conduits. Urethral repair by primary closure for the type 1 injury and a tubularized autologous bladder mucosal graft for the type 2 injury served as controls. At 3 months, urethral diameter was measured with retrograde urethrography. The animals were then euthanized for histological examination. Results: The postoperative complication rate was significantly higher in the urethral reconstructions using tubed collagen (83%) and elastin (50%) grafts compared to the patch onlay grafts ( p = 0.001 for collagen and p = 0.01 for elastin) and tubularized ABM (10%, p = 0.003 and 0.05, respectively). At the type 2 injury site, a dense circumferential fibrosis developed after all repairs. Only minimal ventral fibrosis presented in the type 1 injury repair. The intensity of chronic inflammation and fibrosis was greatest when collagen was used for the urethral repair. In the elastin urethral repairs the urethral diameter decreased significantly for the tubed repair compared to the patch onlay ( p = 0.02). Conclusion: Urethral injury repair using elastin and collagen biomaterials is feasible in the rabbit model. The results of onlay urethroplasty using the elastin and collagen patches are significantly superior to those using the elastin and collagen tubed conduits. © 2006 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 2006" @default.
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- W2000752203 date "2006-09-12" @default.
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- W2000752203 title "Different outcomes in urethral reconstruction using elastin and collagen patches and conduits in rabbits" @default.
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- W2000752203 doi "https://doi.org/10.1002/jbm.b.30662" @default.
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