Calcium wave propagation in the giant axon of the earthworm

Hiroto Ogawa, Kotaro Oka, Shozo Fujita

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We examined a spatio-temporal pattern of intracellular free Ca2+ concentration in the giant axons of the earthworm, Eisenia foetida, with a fluorescent imaging technique using conforcal laser-scanning microscope and calcium indicator, 'Calcium Green 1'. Electrical tetanic stimulation applied to the nerve cord induced calcium waves along the giant axon. The calcium waves propagated both anteriorly and posteriorly with various speeds, and sometimes were split into several waves with different velocities. The results suggest that some types of calcium-releasing mechanisms may be associated with the calcium wave propagation.

Original languageEnglish
Pages (from-to)45-49
Number of pages5
JournalNeuroscience Letters
Volume179
Issue number1-2
DOIs
Publication statusPublished - 1994 Sep 26
Externally publishedYes

Fingerprint

Oligochaeta
Calcium Signaling
Axons
Calcium
Electric Stimulation
Lasers

Keywords

  • Ca-induced Ca release
  • Calcium imaging
  • Calcium wave
  • Earthworm
  • Lateral giant fiber
  • Median giant fiber

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Calcium wave propagation in the giant axon of the earthworm. / Ogawa, Hiroto; Oka, Kotaro; Fujita, Shozo.

In: Neuroscience Letters, Vol. 179, No. 1-2, 26.09.1994, p. 45-49.

Research output: Contribution to journalArticle

Ogawa, Hiroto ; Oka, Kotaro ; Fujita, Shozo. / Calcium wave propagation in the giant axon of the earthworm. In: Neuroscience Letters. 1994 ; Vol. 179, No. 1-2. pp. 45-49.
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