Two biodegradable materials, polyglycolide-copoly(L)-lactide/poly-dioxanone composite and poly(3-hydroxybutyrate), have been employed for surgery in the gastrointestine of laboratory rats. The tissue response was analyzed at distinct time intervals up to 2 months by differential mRNA display. Two specific PCR fragments were transiently present 7 and 14 days after contact with poly(3-hydroxybutyrate). Both fragments represent distinct rat lipases which might play a role in poly(3-hydroxybutyrate) degradation.
These results provide new insight in I/R-induced gene expression after experimental pancreas transplantation. The reported upregulation of heat shock proteins, Best5, and PAPIII may play a pathologic role in pancreatic cold I/R injury and could therefore provide a promising perspective for further investigations.
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