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Effects of Some Heavy Metals on the Action Potentials of an Identified Helix pomatia Photosensitive Neuron
Author(s) -
KARTELIJA GORDANA,
RADENOVIĆ LIDIJA,
TODOROVIĆ NATAŠA,
NEDELJKOVIĆ MIODRAG
Publication year - 2005
Publication title -
annals of the new york academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.712
H-Index - 248
eISSN - 1749-6632
pISSN - 0077-8923
DOI - 10.1196/annals.1342.038
Subject(s) - helix pomatia , chemistry , neuron , blocking (statistics) , calcium , biophysics , ganglion , blocking effect , neuroscience , snail , biology , psychology , ecology , developmental psychology , statistics , mathematics , organic chemistry
A bstract : In the photosensitive MB neuron in the left parietal ganglion of Helix pomatia , the onset of light prolongs significantly (by about 40%) the duration of the action potential. The broadening of the action potential after the onset of light was found to be due to its calcium component and could not be induced after blocking Ca 2+ channels by Cd 2+ and Pb 2+ and in absence of Ca 2+ in medium. The blocking effect of both compounds was reversible. It was found that CdCl 2 exhibited a more intense blocking effect than PbCl 2 .