Surface properties and implantation site affect the capsular fibrotic overgrowth (Articolo in rivista)

Type
Label
  • Surface properties and implantation site affect the capsular fibrotic overgrowth (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Alternative label
  • Bakeine, GJ; Bertolotti, A; Latina, M; Congiu, T; Prati, U; Roveda, L; Trotta, F; Tormen, M; Di Fabrizio, E; Carlini, G; Facoetti, A; Nano, R (2007)
    Surface properties and implantation site affect the capsular fibrotic overgrowth
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Bakeine, GJ; Bertolotti, A; Latina, M; Congiu, T; Prati, U; Roveda, L; Trotta, F; Tormen, M; Di Fabrizio, E; Carlini, G; Facoetti, A; Nano, R (literal)
Pagina inizio
  • 965 (literal)
Pagina fine
  • 969 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 83A (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Univ Pavia, Dept Biol Anim, I-27100 Pavia, Italy; Univ Trieste, Dept Phys & Nanotechnol, Trieste, Italy; CNR, IGM, Dept Histchem & Cytochem, I-00185 Rome, Italy; Univ Pavia, Policlin San Matteo Hosp, IRCCS, Sch Med,dept Surg, I-27100 Pavia, Italy; Univ Insubria, Lab Human Morphol, Varese, Italy; Madonna Grazie Hosp, Inst gen & Transplant Surg, Matera, Italy; TASC, INFM, Nanolithog Beamline Elettr Synchroton Light Sourc, LILIT Grp, Trieste, Italy (literal)
Titolo
  • Surface properties and implantation site affect the capsular fibrotic overgrowth (literal)
Abstract
  • Transplantation of encapsulated pancreatic islets is a promising approach for the treatment of type I diabetes. Large-scale application of this technique, however, is hampered by insufficient biocompatibility of the capsules. In this study, we have evaluated the biocompatibility of a new synthetic material with six different chemical groups on their surface (amino, carboxy-sulfate, carboxylate, hydroxylate, sulfate, and PMMA) used for the fabrication of the microcapsules. Eight Lewis rats were inoculated with a suspension of empty capsules made for each candidate material in the retroperitoneal ileopsoas muscle and renal subcapsular space. Four weeks later kidney and muscle containing the capsules were explanted, paraffin embedded, sectioned and stained with Sirius Red and Masson's Trichrome for histological analysis. The amount of fibrosis was also ultrastructurally evaluated with scanning electron microscopy. The samples were then subjected to digitalized quantitative analysis using specific software to determine the degree of fibrotic overgrowth. The quantification of collagen deposition, calculated in proximity of the microcapsules, was expressed as a percentage of the total area and can be considered a good index for the biocompatibility, an essential prerequisite for functional pancreatic islet transplantation. The results show that subcapsular renal space is the best implantation site and the positive surface charge induces a more intense collagen synthesis. (c) 2007 Wiley Periodicals, Inc. (literal)
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