2000
DOI: 10.1002/(sici)1521-1878(200006)22:6<578::aid-bies11>3.0.co;2-#
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Regeneration in the metazoans: why does it happen?

Abstract: Why does regeneration occur? And why, when it manifests itself, does it do so in some but not all metazoan species? Hence, what are the permissive or inhibitory factors operating behind this phenomenon? When it comes to regeneration, many questions, such as these, remain unanswered. In fact, the problem of animal regeneration has withstood the probing of scientific inquiry for over 250 years and still awaits a satisfactory mechanistic explanation. In this essay, I will review the distribution and the modes of … Show more

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Cited by 287 publications
(104 citation statements)
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“…Consequently, physiological-homeostatic regeneration does not affect the TDPs previously described: Organisms only capable of physiologicalhomeostatic regeneration possess totipotent/pluripotent stem cells only during the first period of their life. By contrast, restorative-facultative regeneration requires a high potential for differentiation and a high recruitment of stem cells (Sánchez Alvarado 2000). Thus, organisms that perform facultative-restorative regeneration during their life possess stem cells described in the previous TDP as specific to the embryonic period (see Salo 2006).…”
Section: Tdp (C): One Phasesupporting
confidence: 77%
“…Consequently, physiological-homeostatic regeneration does not affect the TDPs previously described: Organisms only capable of physiologicalhomeostatic regeneration possess totipotent/pluripotent stem cells only during the first period of their life. By contrast, restorative-facultative regeneration requires a high potential for differentiation and a high recruitment of stem cells (Sánchez Alvarado 2000). Thus, organisms that perform facultative-restorative regeneration during their life possess stem cells described in the previous TDP as specific to the embryonic period (see Salo 2006).…”
Section: Tdp (C): One Phasesupporting
confidence: 77%
“…The response observed in the present study would be most consistent with the initial phase of a nonblastemal, epimorphic regenerative response (7,8). This type of regeneration is characterized by cell proliferation and subsequent regeneration of site appropriate tissue, the classic example of which in mammals is liver regeneration after acute liver injury (5,11).…”
Section: Discussionmentioning
confidence: 99%
“…A blastema is a preprogrammed accumulation of multipotential cells that spontaneously proliferate, migrate, differentiate, and spatially organize in three dimensions to form a perfect phenocopy of the missing or injured body part (7). The second category of epimorphic regeneration does not involve a blastema and instead utilizes mechanisms that include: (i) transdifferentiation of cells to replace the missing tissue; (ii) limited dedifferentiation and proliferation of cells; and/or (iii) proliferation and differentiation of stem and progenitor cells in the injured tissue (8). The specific origins of the cells, the genetic profile, and the upstream molecular signals that participate in the two categories of epimorphic regeneration are only partially known, and microenvironmental cues and cell populations required to initiate and sustain the process are gradually and systemically being identified (9, 10).…”
mentioning
confidence: 99%
“…Cet article se propose de faire le point sur nos connaissances concernant la régénération des pattes chez les tétrapodes et des nageoires chez les poissons. < très répandu parmi les métazoaires [4] et apparaît dans des branches éloignées chez les vertébrés (Figure 1). Le phénomène de régénération des appendices correspond-t-il à plusieurs émergences au cours de l'évolution ou bien à un processus ancestral qui a été perdu dans certains phylums ?…”
Section: Régénération Des Appendices Phylogénie Et Ontogénieunclassified