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DOI: 10.1055/s-2006-946715
Neuronal Quantification in Cold-Preserved Nerve Allografts and Treatment with FK-506 Through Osmotic Pumps Compared to Nerve Autografts
Publication History
Accepted: March 3, 2006
Publication Date:
17 July 2006 (online)

ABSTRACT
Nerve regeneration across nerve autografts was compared to cold-preserved nerve allografts and treatment with FK-506. The tibial branch of the rat sciatic nerve was transected and immediately repaired with nerve autografts and allografts. FK-506 was administered for 4 weeks through osmotic pumps to different groups of both auto- and allograft cases. The nerves of two allografted groups were preserved with University of Wisconsin Cold Storage Solution (UWCSS) for 3 weeks. Quantification of retrograde-labelled motoneurons and axonal counts was performed. Nerve regeneration through nerve allografts treated with FK-506 or UWCSS was similar to the regeneration obtained when non-treated nerve autografts were used. However, there was no additive effect of the two treatments, and neither FK-506 nor UWCSS improved the number of gamma motoneurons. Both UWCSS and FK-506 administration with osmotic pumps was effective in improving nerve regeneration in allografts, achieving a level comparable to that obtained in non-grafted control cases.
KEYWORDS
FK-506 - osmotic pump - neuron
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Bernardo HontanillaM.D. Ph.D.
Dpto. Cirugía Plástica y Reparadora, Clínica Universitaria, Universidad de Navarra
C/Pío XII, 36, 31008 Pamplona, Spain