Light-induced changes in extracellular volume in the retina of the drone, Apis mellifera

Orkand, R.K., Dietzel, I. and Coles, J.A. (1984) Light-induced changes in extracellular volume in the retina of the drone, Apis mellifera. Neuroscience Letters, 45(3), pp. 273-278. (doi:10.1016/0304-3940(84)90238-6)

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Publisher's URL: http://dx.doi.org/10.1016/0304-3940(84)90238-6

Abstract

Slices of drone retina were superfused with a Ringer solution containing 1 mM tetraethylammonium (TEA), and the concentration of this ion in the extracellular space ([TEA]0) was measured with ion-sensitive microelectrodes. A train of light flashes for 90 s caused [TEA] to increase by 48 ± 4% (S.E.), n = 12. Since water crosses cell membranes more readily than TEA does this indicates a volume decrease of at least 32%. Measurements of Ca2+ activity under similar conditions showed an increase of 32 ± 4% (S.E.), n = 14. Since this is less than the increase in [TEA]0 it suggests that the total amount of Ca2+ in the extracellular space actually decreased.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Coles, Dr Jonathan
Authors: Orkand, R.K., Dietzel, I., and Coles, J.A.
College/School:College of Medical Veterinary and Life Sciences > Institute of Infection Immunity and Inflammation
Journal Name:Neuroscience Letters
Publisher:Elsevier
ISSN:0304-3940
ISSN (Online):1872-7972

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