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2002 | 07 | 2 |

Tytuł artykułu

Ionic mechanisms involved in the nodal swelling of myelinated axons caused by marine toxins

Warianty tytułu

Języki publikacji

EN

Abstrakty

EN
This review describes the ionic mechanisms involved in the nodal swelling of frog myelinated axons caused by specific marine neurotoxins (ciguatoxins, brevetoxins, Conus consors toxin and equinatoxin-II), analysed using confocal laser scanning microscopy. We have focussed on toxins that either target neuronal voltage-dependent Na+ channels, or that form cation-selective pores and indirectly affect the functioning of the Na+-Ca++ exchanger.

Wydawca

-

Rocznik

Tom

07

Numer

2

Opis fizyczny

p.317-321

Twórcy

autor
  • Institut Federatif de Neurobiologie Alfred Fessard, CNRS, bat.32-33, 91198 Gif sur Yvette cedex, France
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Bibliografia

  • 1. Lewis, R. J., Molgó, J. and Adams, D. Ciguatera toxins: Pharmacology of toxins involved in ciguatera and related fish poisonings, in: Seafood and Freshwater Toxins, (Botana, L., Ed.), Marcel Dekker, New York, 2000, 419-447.
  • 2. Baden, D. G. Brevetoxins: unique polyether dinoflagellate toxins. FASEB J. 3 (1989) 1807-1817.
  • 3. Dechraoui, M. Y., Naar, J., Pauillac, S. and Legrand, A. M. Ciguatoxins and brevetoxins, neurotoxic polyether compounds active on sodium channels. Toxicon 37 (1999) 125-143.
  • 4. Benoit, E., Juzans, P., Legrand, A. M. and Molgó, J. Nodal swelling produced by ciguatoxin-induced selective activation of sodium channels in myelinated nerve fibers. Neurosci. 71 (1996) 1121-1131.
  • 5. Jeglitsch, G., Rein, K., Baden, D. G. and Adams, D. J. Brevetoxin-3 (PbTx-3) and its derivatives modulate single tetrodotoxin-sensitive sodium channels in rat sensory neurons. J. Pharmacol. Exp. Ther. 284 (1998) 516-525.
  • 6. Hogg, R. C., Lewis, R. J. and Adams, D. J. Ciguatoxin (CTX-1) modulates single tetrodotoxin-sensitive sodium channels in rat parasympathetic neurones. Neurosci. Lett. 252 (1998) 103-106.
  • 7. Le Gall, F., Favreau, P., Benoit, E., Mattei, C., Bouet, F., Menou, J. L., Menez, A., Letourneux, Y. and Molgó, J. A new conotoxin isolated from conus consors venom acting selectively on axons and motor nerve terminals through a Na+- dependent mechanism. Eur. J. Neurosci. 11 (1999) 3134-3142.
  • 8. Mattei, C., Benoit, E., Juzans, P., Legrand, A. M. and Molgó J. Gambiertoxin (CTX-4B), purified from wild Gambierdiscus toxicus dinoflagellates, induces Na+-dependent swelling of single frog myelinated axons and motor nerve terminals in situ. Neurosci. Lett. 234 (1997) 75-78.
  • 9. Mattei, C., Dechraoui, M. Y., Molgó, J., Meunier, F. A., Legrand, A. M. and Benoit, E. Neurotoxins targeting receptor site 5 of voltage-dependent sodium channels increase the nodal volume of myelinated axons. J. Neurosci. Res. 55 (1999) 666-673.
  • 10. Mattei, C., Molgó, J., Marquais, M., Vernoux, J. P. and Benoit, E. Hyperosmolar D-mannitol reverses the increased membrane excitability and the nodal swelling caused by Caribbean ciguatoxin-1 in single frog myelinated axons. Brain Res. 847 (1999) 50-58.
  • 11. De Haas, V. and Vogel, W. Sodium and potassium currents recorded during an action potential. Eur. Biophys. J. 17 (1989) 49-51.
  • 12. Zorec, R., Tester, M., Macek, P. and Mason, W. T. Cytotoxicity of equinatoxin II from the sea anemone Actinia equina involves ion channel formation and an increase in intracellular calcium activity. J. Membr. Biol. 118 (1990) 243-249.
  • 13. Belmonte, G., Pederzolli, C., Macek, P. and Menestrina, G. Pore formation by sea anemone cytolysin equinatoxin-II in red blood cells and model lipid membranes. J. Membr. Biol. 131 (1993) 11-22.
  • 14. Belmonte, G., Menestrina, G., Pederzolli, C., Krizaj, I., Gubensek, F., Turk, T. and Macek, P. Primary and secondary structure of a pore-forming toxin from the sea anemone Actinia equina L., and its association with lipid vesicles. Biochim. Biophys. Acta 1192 (1994) 197-204.
  • 15. Meunier, F. A., Frangez, R., Benoit, E., Ouanounou, G., Rouzaire-Dubois, B., Suput, D. and Molgó, J. Ca2+ and Na+ contribute to the swelling of differentiated neuroblastoma cells induced by equinatoxin-II. Toxicon 38 (2000)1547-1560.

Typ dokumentu

Bibliografia

Identyfikatory

Identyfikator YADDA

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