Tuesday, September 13, 2011

How the salamanders obtain to regenerate its members?

In the nature we can appreciate in greater or minor degree the regenerative capacity. But it has an amphibian that it calls the attention sufficiently and is object of many studies for its capacity to regenerate one of its members some times.



We speak of the salamander. When one of these salamanders loses, for example, a leg, forms on “cotoco” a small lump, called blastema [/url] [/b], that in turn only delay 3 weeks in if transforming into a new completely functional leg, a sufficiently short period if leading more in account that the animal can live 12 years or. In a human being, this would be equivalent to not more than regenerate an arm or leg in 5 months.

When a salamander loses one of its legs, the sanguine vases of “cotoco” if they contract soon: it is scrumbled hemorrhage and a layer of dermic cells recovers the surface quickly. During the following days to the injury, this epidermis is changedded into a layer of emitting cells of indispensable signals for the success of regeneration.



The fibroblastos (cells of the fabric connective that intervines in the cicatrização of wounds) migram and are dislocated for the surface of the cut to be joined in the center of the wound. There the cells of blastema proliferate.



Until it has some few years, gave credit that the cells of blastema were capable to regenerate any fabric. But a study developed for the Center of Regenerative Therapies of Dresde in Germany and published in 2009 it demonstrated that the cells of blastema do not become pluripotenciais during the regeneration of members.



Instead of this, they hold back one strong memory of its fabric of embryonic origin. That is, that the cells of the muscle manufacture muscle and of the cartilage, cartilage. According to researchers, the potential of the cells is restricted and they do not regenerate any type of agency or fabric.



Beyond regeneration, the salamanders make it without they are with sequelas such as scars. To reconstruct weaveeed without leaving scar some is something that also would result very beneficial it Human being, since the fabric cicatricial in certain parts of the anatomy human being can hinder the correct recovery of the functionality same them, beyond the aesthetic questions to show the scars in visible places.

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