EXPERIMENTAL IN VIVO REGENERATION OF PERIPHERAL NERVE AXONS and PERINEURIUM GUIDED BY RESORBABLE COLLAGEN FILM |
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Authors: | Manabu Takahashi Takao Satou Shigeo Hashimoto |
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Affiliation: | Clinical Laboratory, Pathology Division, Tokyo Metropolitan Toshima General Hospital, Tokyo;Second Department of Pathology, Kinki University School of Medicine, Osaka |
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Abstract: | In our previous paper, we reported a marked advantage in using collagen gel matrix available for cell culture in combination with a silicone tube as an effective environment for axonal sprouting during peripheral nerve regeneration. In the present experiment, collagen film was substituted for the silicone tube because of its non-toxicity, biocompatibility and better availability. Also, the surgical procedure was simplified, using a fibrin adhesive system instead of suturing. In the second postoperative week, severed proximal and distal stumps became joined together concomitantly with absorption of the collagen matrix and film. On size-frequency histograms, the diameters of both myelinated and unmyelinated axons at 8 weeks after surgery had recovered to their normal ranges. These findings demonstrate that this procedure of enveloping a collagen matrix and severed nerve stumps in bioresorbable collagen film would be an ideal way of forming a perfect perineurium. The regeneration of peripheral nerve axons resulted in normal thickness of the original nerve bundle without exception, unlike the axons on the control side. |
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Keywords: | Regeneration Wistar rat Peripheral nerve Collagen film Fibrin adhesive system |
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