title: Regeneration of peripheral nerves by bioabsorbable polymer tubes with fibrin gel.
abstract: 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 4 weeks 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.
authors: Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo, Japan.
authors: Kazuya
authors: K
authors: Nakayama
authors: Kazuo
authors: K
authors: Takakuda
authors: Yoshihisa
authors: Y
authors: Koyama
authors: Soichiro
authors: S
authors: Itoh
authors: Wei
authors: W
authors: Wang
authors: Noriaki
authors: N
authors: Shirahama
authors: Tomokazu
authors: T
authors: Mukai
mesh_terms: D000818:Animals; D001672:Biocompatible Materials; D001696:Biomechanical Phenomena; D005337:Fibrin; D005782:Gels; D008297:Male; D008422:Materials Testing; D036103:Nanotechnology; D043942:Nanotubes; D009416:Nerve Regeneration / Q000187:drug effects; D011108:Polymers; D051381:Rats; D017207:Rats, Sprague-Dawley; D012584:Sciatic Nerve / Q000187:drug effects / Q000293:injuries / Q000502:physiology
chemical_list: D001672:Biocompatible Materials; D005782:Gels; D011108:Polymers; D005337:Fibrin