Journal ArticleDOI
Neural serotonin receptors in active and hibernating helicid snails (Helix lucorum).
D. A. Sakharov,G N Korobtsov +1 more
TLDR
In hibernating snailsHelix lucorum, the effect of 5-HT on neurons of an identified group is mainly hyperpolarization associated with a conductance increase, while, in active snails, theEffect is depolarization and a decrese of the membrane conductance.Abstract:
In hibernating snails Helix lucorum, the effect of 5-HT on neurons of an identified group is mainly hyperpolarization associated with a conzation conductance increase, while, inactive snails, the effect is de polarization decrease of the membrane conductance.read more
Citations
More filters
Journal ArticleDOI
Aging of neurons in the mollusc Lymnaea stagnalis. Structure, function and sensitivity to transmitters.
TL;DR: The structural and functional changes of the three identified neurons of the small parietal ganglion were investigated during experiments on the mollusc Lymnaea stagnalis, in two age groups: adult (10-12 months) and old (22-24 months).
Journal ArticleDOI
Pharmacological properties of 5-HT-receptors of the Helix pomatia L. (gastropoda) heart muscle cells
Tibor Kiss,Katalin S.-Rózsa +1 more
TL;DR: On the basis of interactions of antagonists and 5-HT at receptor sites no specific antagonists were found, but nicotine and morphine blocked mainly the D-response, while atropine and d TC blocked mainly H-response.
Journal ArticleDOI
Identification of serotonin receptors on someHelix pomatia neurons
TL;DR: Four types of responses to iontophoretic application of serotonin were found in neurons of the ventral aspect of the visceral ganglion of Helix pomatia, evidently connected with a particular type of serotonin receptor.
Journal ArticleDOI
Seasonal differences in the action of morphine and naloxone on the response ofHelix neurons to dopamine
TL;DR: The results of these experiments suggest that the mechanism of the inhibitory action of nicotinic acid on platelet aggregation is due to its ability to act directly on these blood cells and to disturb their homeostatic balance of regulators of platelets, chiefly in the direction of an increase in the synthesis of its inhibitor, cAMP.
Journal ArticleDOI
Modification of glial response in hibernation: a patch-clamp study on glial cells acutely isolated from hibernating land snail.
Ljiljana Nikolić,Danijela Bataveljic,Pavle R. Andjus,Ivana Moldovan,Miodrag Nedeljkovic,Branka Petković +5 more
TL;DR: It is revealed that glial response is reduced in the hibernating state and seasonal modulation of glial activity is suggested, which could be important for preservation of brain rhythmic activity and survival of the animal.
References
More filters
Journal ArticleDOI
Ionic mechanisms and receptor properties underlying the responses of molluscan neurones to 5‐hydroxytryptamine
TL;DR: Molluscan neurones have been found to show six different types of response to the iontophoretic application of 5‐hydroxytryptamine (5‐HT); the pharmacological properties of the receptors and the ionic mechanisms associated with these responses have been analysed.
Journal ArticleDOI
Synaptic connexions of two symmetrically placed giant serotonin-containing neurones.
G. A. Cottrell,J. B. Macon +1 more
TL;DR: It is found that giant serotonin cell in Helix pomatia makes synaptic connexions with three non‐amine‐containing neurones: the anterior, middle and posterior buccal cells.
Journal ArticleDOI
Voltage clamp analysis of the sodium and calcium inward currents in snail neurones
S.G. Chamberlain,G.A. Kerkut +1 more
TL;DR: It is suggested that sodium is the main ion carrying the inward current and that calcium acts mainly by altering the membrane permeability.
Journal ArticleDOI
Seasonal and activity-dependent changes of the serotonin level in the C.N.S. and heart of the snail (Helix pomatia L.).
László Hiripi,János Salánki +1 more
TL;DR: The variations of the 5 HT level in snails can be considered partly as the consequence of the change of the activity, but on the other hand the serotonin level can play a role in the determination of theactivity of the animal.
Journal ArticleDOI
The oxygen sensitivity of the electrogenic sodium pump in snail neurones
G.A. Kerkut,Barbara York +1 more
TL;DR: It is suggested that the electrogenic sodium pump is a major component in the response of the membrane potential to pO2.
Related Papers (5)
Physiological and morphological characteristics of Br-type neuron in the central nervous system of the snail Helix pomatia L.
J. Salánki,I Vadász,K Elekes +2 more