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Regeneration of Peripheral Nerves by Bioabsorbable Polymer Tubes with Fibrin Gel

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We developed two types of nerve conduits, straight tubes, and bellows tubes, for peripheral nerve regeneration with bioabsorbable polymer membranes. Mechanical properties of these straight and bellows tubes were analyzed. 30 straight tubes and 30 bellows tubes were implanted to a nerve defect made in a rat sciatic nerve and the nerve regeneration in the tube was investigated. A half of these tubes were utilized alone and the others were filled with fibrin gel made from coagulated plasma and implanted. Bellows tubes were superior in mechanical characteristics to straight tubes and the inner cavities of the bellows tubes were suitably maintained after implantation. At 4weeks after operations, remyelinations were observed in the regenerated tissue at the location of the middle parts of the tubes filled with fibrin gel whereas no remyelinations in the tubes without fibrin gel. The use of fibrin gel as filling materials within the tubes significantly enhanced the nerve regeneration. The fibrin gel might be soft nanomaterials significantly enhance the regeneration of the peripheral nerves. We concluded that the developed bioabsorbable bellows tubes filled with fibrin gel were effective for peripheral nerve regeneration.
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Document Type: Research Article

Publication date: 2007-03-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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