Comparing Processed Nerve Allografts and Assessing Their Capacity to Retain and Release Nerve Growth Factor

Annals of Plastic Surgery
Alonda C PollinsWesley P Thayer

Abstract

Peripheral nerve gap injuries continue to present a clinical challenge to today's surgeons. One method of surgical repair, implantation of acellular allografts, has been developed with the aim of bridging the gap with a cadaveric graft after removal of its cellular components, thereby accelerating axonal regeneration and eliminating the need for immunosuppression in recipient patients. Although decellularizing allografts reduces rates of graft rejection, the same chemical processing modifies the neural microenvironment, removing neutrotrophic factors and modifying the complex extracellular matrix. In this study, we explore 3 common methods for producing acellular allografts. Extracellular matrix content remaining after processing was investigated and was found to be highly dependent on the decellularization method. In addition, scanning electron micrographs were obtained to evaluate the structural effects of the decellularization methods. Though the content and structure of these processed allografts will contribute to their effectiveness as nerve gap repair candidates, we demonstrate that it also affects their capacity to be supplemented/preloaded with the prototypical neurotrophin, nerve growth factor (NGF), essential to neur...Continue Reading

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Citations

Nov 15, 2019·Tissue Engineering. Part C, Methods·Michaela W McCraryChristine E Schmidt
Aug 10, 2019·Methods : a Companion to Methods in Enzymology·Michael J BuckenmeyerBryan N Brown

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