title: Comparative study between polypropylene and polypropylene/poliglecaprone meshes used in the correction of abdominal wall defect in rats.
abstract: OBJECTIVE
  To evaluate the healing process of a defect in the ventral abdominal wall of rats, comparing the polypropylene and polypropylene/poliglecaprone meshes on the 30(th) and 60(th) postoperative day.
  
  
  METHODS
  Thirty two Wistar rats were submitted to a ventral abdominal wall defect, with integrity of the parietal peritoneum. In the repair, were used polypropylene (group A) and polypropylene/poliglecaprone (group B) meshes. The groups were subdivided into four subgroups of eight animals euthanized on the 30(th) (A30 and B30) and 60(th) postoperative day (A60 and B60). Fragments of the abdominal wall of the animals were submitted to macroscopic, tensiometric and histological evaluations.
  
  
  RESULTS
  The tensiometry on subgroup A30 showed a mean average break point of 0.78 MPa and in A60, 0.66 Mpa. In subgroup B30 it was 0.84 MPa and in B60, 1.27 Mpa. The score of the inflammatory process showed subacute phase on A30 and B30 sub-groups and chronic inflammatory process in subgroups A30 and 60B.
  
  
  CONCLUSIONS
  The tensile strength was higher on the wall repaired by polypropylene/poliglecaprone mesh in the 60(th) post-operative day. Histology showed higher concentration of fibrosis on the surface of the polypropylene mesh with a tendency to encapsulation. In polypropylene/poliglecaprone subgroups the histology showed higher concentration of fibrosis on the surface of mesh filaments.
authors.affiliation: School of Medicine, State University of Ponta Grossa, PR, Brazil. carlosutrabo@uol.com.br
authors.forename: Carlos Alberto Lima
authors.initials: CA
authors.lastname: Utrabo
authors.forename: Nicolau Gregori
authors.initials: NG
authors.lastname: Czeczko
authors.forename: Cesar Roberto
authors.initials: CR
authors.lastname: Busato
authors.forename: Mario Rodrigues
authors.initials: MR
authors.lastname: Montemor-Netto
authors.forename: Osvaldo
authors.initials: O
authors.lastname: Malafaia
authors.forename: Ulrich Andreas
authors.initials: UA
authors.lastname: Dietz
mesh_terms: D034861:Abdominal Wall / Q000473:pathology / Q000601:surgery*; D000818:Animals; D001672:Biocompatible Materials; D004146:Dioxanes; D008297:Male; D008855:Microscopy, Electron, Scanning; D011091:Polyesters; D011126:Polypropylenes; D051381:Rats; D017208:Rats, Wistar; D013526:Surgical Mesh; D013997:Time Factors
chemical_list: D001672:Biocompatible Materials; D004146:Dioxanes; D011091:Polyesters; D011126:Polypropylenes; C095495:glycolide E-caprolactone copolymer