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Early Sea Urchin Embryo as a Model for the Study of Pre-Nervous Functions of Neurotransmitters: New Data

  • G. A. Buznikov
  • B. N. Manukhin
  • L. M. Rakić
  • T. M. Turpaev

Abstract

The most extensively studied neurotransmitters, such as acetylcholine, catecholamines and indolylalkylamines, are found already in the early, “pre-nerve”-stage embryos of all examined classes of either non-vertebrates or vertebrates (Fig. 1). A comprehensive survey of the available data on the “pre-nerve”-stage neurotransmitters permits the conclusion that the concentration of such compounds changes in a well-regulated fashion at key stages of early embryogenesis. This appears to be true especially at the time of the embryonic cleavage. The common neurotransmitters appear to be functional in “pre-nerve”-stage embryos, and prevention of their function disrupts the course of embryogenesis. This in turn seems to indicate a direct involvement of “pre-nerve” neurotransmitters in the regulatory processes of the early embryogenesis (1–6).

Keywords

Early Embryo Early Embryogenesis Yolk Granule Emission Fluorescence Maximum Embryonic Cleavage 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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Copyright information

© Plenum Press, New York 1980

Authors and Affiliations

  • G. A. Buznikov
    • 1
    • 2
  • B. N. Manukhin
    • 1
    • 2
  • L. M. Rakić
    • 1
    • 2
  • T. M. Turpaev
    • 1
    • 2
  1. 1.N. K. Kol ’tsov Institute of Developmental BiologyAcademy of Sciences of USSRMoscowUSSR
  2. 2.Department of BiochemistrySchool of MedicineBelgradeYugoslavia

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