Adipose tissue-derived mesenchymal stem cells (AdMSCs) are useful in the regeneration of neural tissues. Furthermore, xenotransplantation of @entity1 adipose tissue-derived mesenchymal stem cells (hAdMSCs) into animal models has already been tested and the results encouraged us to study peripheral nerve regeneration in @entity95 , in order to test the feasibility of a xenotransplantation of hAdMSCs. ANIMALS AND METHOD: To promote end-to-end nerve fiber contacts of a 4-cm gap in the peroneal nerve of white @entity95 , an autologous vein conduit was used and three groups of animals were evaluated. In Group I, the gap was repaired with a vein conduit refilled with fibrin. Group II was similar, but the animals were treated with @entity205 . In Group III, a fibrin scaffold with hAdMSCs was placed inside the autologous vein conduit, and animals were treated with @entity205 . Neurofilament immunohistochemistry results showed 100% nerve regeneration at the vein guidance channel 90 days after the surgery in the hAdMSC-transplanted group but lesser neural regeneration in the neurofilaments of groups I and II. The analysis of variance (ANOVA) test showed statistically significant differences among all groups (p  <  0.04). Group III exclusively tested positive for human monoclonal anti-mitochondrial antibody. Electron microscopy images showed tiny bundles, with a predominance of nonmyelinated axons. @entity17 caused irregular thickness of the myelin sheath, which was especially observed in group III. CONCLUSIONS: Xenotransplantation of hAdMSCs into a fibrin scaffold promoted nerve regeneration through a vein conduit that connected a 4-cm gap created at the peroneal nerve of @entity95 . Animals treated with hAdMSCs presented negative inflammatory response at the regenerated nerve gaps, but it was demonstrated that hAdMSCs were incorporated to the new nerve creating neural tissue and endothelial cells. However, hAdMSCs required immunosuppression with @entity205 to achieve axonal regeneration.

Xenotransplantation of @entity1 adipose-derived stem cells in the regeneration of a XXXX peripheral nerve.

@entity1 :: ('9606', 'Species') :: ['human'] @entity205 :: ('MESH:D016572', 'Chemical') :: ['cyclosporine A'] @entity17 :: ('MESH:D003711', 'Disease') :: ['Myelinated axons'] @entity95 :: ('9986', 'Species') :: ['rabbits', 'New Zealand rabbits']
@entity95 :: (9986,Species) :: ['rabbit']
