The Mechanisms and Frequencies of Cell Nuclei Division in the Mouse Trophoblast and Decidua during Postimplantation Embryogenesis

The Mechanisms and Frequencies of Cell Nuclei Division in the Mouse Trophoblast and Decidua... Our finding of amitotic division of trophoblast cell nuclei in blastocysts of American mink Mustela vison, which has an obligatory period of delay in implantation (obligatory embryonic diapause) in its ontogenesis, led us to study the mechanisms and frequencies of division of trophoblast and decidua cell nuclei during the postimplantation embryogenesis of mouse Mus musculus, which does not exhibit an obligatory diapause nor amitosis in blastocysts. It has been established that the main mechanism underlying the cell nuclei division in both tissues (trophoblast and decidua) forming the placenta is amitosis. These data suggest that the occurrence of an obligate diapause in ontogenesis of certain animal species is related not only to the delay in implantation, but also to the alteration in the chronology of all processes of embryogenesis. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Developmental Biology Springer Journals

The Mechanisms and Frequencies of Cell Nuclei Division in the Mouse Trophoblast and Decidua during Postimplantation Embryogenesis

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Publisher
Kluwer Academic Publishers-Plenum Publishers
Copyright
Copyright © 2003 by MAIK “Nauka/Interperiodica”
Subject
Life Sciences; Animal Anatomy / Morphology / Histology
ISSN
1062-3604
eISSN
1608-3326
D.O.I.
10.1023/B:RUDO.0000007894.50347.76
Publisher site
See Article on Publisher Site

Abstract

Our finding of amitotic division of trophoblast cell nuclei in blastocysts of American mink Mustela vison, which has an obligatory period of delay in implantation (obligatory embryonic diapause) in its ontogenesis, led us to study the mechanisms and frequencies of division of trophoblast and decidua cell nuclei during the postimplantation embryogenesis of mouse Mus musculus, which does not exhibit an obligatory diapause nor amitosis in blastocysts. It has been established that the main mechanism underlying the cell nuclei division in both tissues (trophoblast and decidua) forming the placenta is amitosis. These data suggest that the occurrence of an obligate diapause in ontogenesis of certain animal species is related not only to the delay in implantation, but also to the alteration in the chronology of all processes of embryogenesis.

Journal

Russian Journal of Developmental BiologySpringer Journals

Published: Oct 7, 2004

References

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