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Can L-dopa be a precursor of m-octopamine in the cephalic ganglions of the locustLocusta migratoria L?

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Summary

Unexpectedly, the administration of L-dopa, alone or after reserpine depletion of octopamine, results in an increase of octopamine in the cephalic ganglions ofLocusta migratoria L. This increase is exclusively due to m-octopamine and is correlated to dopamine and m-tyramine enhancement. This observation agrees with the basic idea of different biosynthetic pathways for p- and m-octopamine and indicates that unlike p-octopamine, m-octopamine synthesis is related to catecholic amine pathways.

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Authors and Affiliations

  1. Laboratoire de Biochimie du Développement, I.R.B.M., Université Paris 7, F-75005, Paris, (France)

    J. C. David, J. F. Coulon, M. Lafon-Cazal & D. Vinson

  2. Laboratoire de Biochimie, Faculté des Sciences, F-49000, Angers, (France)

    J. C. David, J. F. Coulon, M. Lafon-Cazal & D. Vinson

  3. Cytophysiologie des Arthropodes, ERA 620, Université Paris 6, F-75006, Paris, (France)

    J. C. David, J. F. Coulon, M. Lafon-Cazal & D. Vinson

Authors
  1. J. C. David
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  2. J. F. Coulon
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  3. M. Lafon-Cazal
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  4. D. Vinson
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Acknowledgment. We thank Dr C. Pieau for his critical reading of the manuscript.

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David, J.C., Coulon, J.F., Lafon-Cazal, M. et al. Can L-dopa be a precursor of m-octopamine in the cephalic ganglions of the locustLocusta migratoria L?. Experientia 37, 804–805 (1981). https://doi.org/10.1007/BF01985649

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