Abstract
AbstractIn urodele amphibians, limb regeneration is dependent on innervation and is blocked by the administration of colchicine. The objective of this experiment was to determine if colchicine blocks limb regeneration by a direct action on the blastema cells or by an indirect action on the nerves, specifically, if colchicine treatment of the brachial nerves would inhibit limb regeneration in the newt Notophthalmus viridescens. Colchicine was applied to the nerves by implanting a colchicine‐loaded silastin block adjacent to the brachial nerves of an amputated newt limb. With appropriate dose levels of colchicine, limb regeneration was completely inhibited. Contralateral control limbs, carrying unloaded silastin blocks, and control limbs with colchicine‐loaded blocks implanted equidistant from the blastema, but not adjacent to the brachial nerves, regenerated normally. Thus, the results indicate that the colchicine inhibition of limb regeneration is mediated by colchicine effects on the nerves. The possible mechanism of colchicine action on nerves may involve either wallerian degeneration, or inhibition of axoplasmic transport, or both.
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Dates
Type | When |
---|---|
Created | 20 years, 2 months ago (June 11, 2005, 8:56 a.m.) |
Deposited | 1 year, 10 months ago (Oct. 22, 2023, 1:42 a.m.) |
Indexed | 1 year, 9 months ago (Oct. 27, 2023, 4:42 p.m.) |
Issued | 37 years, 1 month ago (July 1, 1988) |
Published | 37 years, 1 month ago (July 1, 1988) |
Published Online | 20 years, 4 months ago (April 25, 2005) |
Published Print | 37 years, 1 month ago (July 1, 1988) |
@article{Scadding_1988, title={Treatment of brachial nerves with colchicine inhibits limb regeneration in the newt Notophthalmus viridescens}, volume={247}, ISSN={1097-010X}, url={http://dx.doi.org/10.1002/jez.1402470108}, DOI={10.1002/jez.1402470108}, number={1}, journal={Journal of Experimental Zoology}, publisher={Wiley}, author={Scadding, Steven R.}, year={1988}, month=jul, pages={56–61} }