Abstract
A cytogenetic study of the activity of the embryonic genome in ferret (Mustela putorius) blastocysts during ∼6 days after their transition from the oviduct to the uterus has been carried out. It has been found that the prolongation in the preimplantation period in the ferret is not accompanied by inhibition of mitosis or activity in nucleolus organizing regions of inner cell mass cells as occurs in species having an obligatory delay of implantation (obligate embryonic diapause). Amitosis of trophoblast cells starts at the periimplantation stage as in other species that do not have obligate diapause. The data obtained are consistent with the hypothesis that the obligatory stage of delayed implantation might occur in some mammals in different taxonomic groups as a result of chromosome mutations affecting the genetic control of the chronology of events (timing) of embryogenesis. Consequently the characteristics of delayed implantation should be different in different species.
This is a preview of subscription content, log in via an institution to check access.
References
Amoroso, E.C., Placentation, in Marshall’s Physiology of Reproduction, Ch. 15, London: Longmans, Green and Co., 1952, pp. 127–311.
Daniel, J.C., Jr., Coincidence of Embryonic Growth and Uterine Protein in the Ferret, J. Embryol. Exp. Morphol., 1970, vol. 24, pp. 305–312.
Enders, A.C. and Schlafke, S., Implantation in the Ferret: Epithelium Penetration, Am. J. Anat., 1972, vol. 133, pp. 291–316.
Howell, W.M. and Black, D.A., Controlled Silver-Staining of Nucleolus Organizer Regions with a Protective Colloidal Developer: a 1-Step Method, Experientia, 1980, vol. 36, p. 1014.
Hubbell, H.R., Silver Staining as an Indicator of Active Ribosomal Genes, Stain Technol., 1985, vol. 60, pp. 285–294.
Isakova, G.K. and Mead, R.A., Occurrence of Amitotic Division of Trophoblast Cell Nuclei in Blastocysts of the Western Spotted Skunk (Spilogale putorius latifrons), Hereditas, 2004, vol. 104, pp. 177–184.
Isakova, G.K. and Shilova, I.E., Reproduction by “Budding” of the Trophoblast Cells in the Mink Implanting Blastocysts, Dokl. Akad. Nauk, 2000, vol. 371, no. 1, pp. 129–131 [Dokl. (Engl. Transl.), vol. 371, no. 1, pp. 214–216].
Isakova, G.K. and Shilova, I.E., The Ratio between the Frequencies of Two Forms of Amitotic Division of Trophoblast Cell Nuclei in the Mink Blastocysts during the Delayed Implantation Period, Izv. Akad. Nauk, Ser. Biol., 2003, vol. 30, no. 4, pp. 395–398 (Biol. Bull. (Engl. Transl.), 2003, vol. 30, no. 4, pp. 322–324].
Isakova, G.K. and Skvortsova, T.E., The Mechanisms and Frequencies of Cell Nuclei Division in the Mouse Trophoblast and Decidua during Postimplantation Embryogenesis, Ontogenez, 2003, vol. 34, no. 6, pp. 472–477 [Russ. J. Dev. Biol. (Engl. Transl.), 2003, vol. 34, no. 6, pp. 396–401].
Isakova, G.K., Zakharenko, L.P., and Abramova, M.P., Activity of Embryonic Mink Genome during Diapause (Cytogenetic Analysis): Nucleolar and Extranucleolar RNA Synthesis, Ontogenez, 2001, vol. 32, no. 4, pp. 302–308 [Russ. J. Dev. Biol. (Engl. Transl.), 2001, vol. 32, no. 4, pp. 248–253].
Isakova, G.K. and Zhogoleva, N.N., Activity of Mink Embryonic Genome during Diapause (Cytogenetic Analysis): Number of Cells and Size of Cell Nuclei in Blastocysts of Various Size and Age, Genetika, 1997, vol. 33, no. 6, pp. 822–830 [Russ. J. Genet. (Engl. Transl.), 1997, vol. 33, no. 6, pp. 693–700].
Isakova, G.K., The Biological Significance of the Phenomenon of Delayed Implantation in Mammals from the Viewpoint of a Cytogeneticist, Dokl. Akad. Nauk, 2006, vol. 409, no. 6, pp. 847–849 [Dokl. (Engl. Transl.), vol. 409, pp.349–350].
Isakova, G.K., On the Activity of the Sable Embryonic Genome at the Stage of Delayed Implantation: a Cytogenetic Study, Dokl. Akad. Nauk, 2004, vol. 397, no. 1, pp. 128–130 [Dokl. (Engl. Transl.), vol. 397, no. 1, pp. 305–306].
Mead, R.A., Reproduction in Mustelids, in Conservation Biology and the Black-Footed Ferret, Seal, U.S., et al., Eds., New Haven: Yale Univ. Press, 1989, pp. 124–137.
Mead, R.A., Bremmer, S., and Murphy, B.D., Changes in Endometrial Vascular Permeability during the Periimplantation Period in the Ferret (Mustela putorius), J. Reprod. Fertil., 1988, vol. 82, pp. 293–298.
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © G.K. Isakova, 2010, published in Ontogenez, 2010, Vol. 41, No. 3, pp. 228–231.
The article was translated by the author.
Rights and permissions
About this article
Cite this article
Isakova, G.K. Cytogenetic study on the activity of the ferret embryonic genome before implantation. Russ J Dev Biol 41, 189–191 (2010). https://doi.org/10.1134/S1062360410030082
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1062360410030082