69 Result(s)

Article

Light, fluorescence and electron microscopic studies on “neurosecretion” in tritonia diomedia bergh (Mollusca, Nudibranchia)

Membrane-limited electron-dense inclusions designated as elementary neurosecretory granules have a characteristic distribution in cerebropleural ganglia of the nudibranch snail Tritonia diomedia. They occur in th...

D. A. Sakharov, V. L. Bobovyagin… in Zeitschrift für Zellforschung und Mikrosko… (1965)

Chapter

Evolution of Cholinergic Transmission

Although there are several substances which are considered to be neural transmitters, it is unlikely that the physiological diversity of synapses is based on the chemical diversity of transmitters. One cannot ...

D. A. Sakharov, T. M. Turpaev in Neurobiology of Invertebrates (1968)

Article

Axo-somatic synapses in procerebrum of Gastropoda

Es wurde gezeigt, dass im Procerebrum der Gastropoden axosomatische Synapsen von 2 Typen vorkommen. Diese Befunde sind ungewöhnlich, da axosomatische Synapsen in anderen Teilen des Zentralnervensystems nicht e...

I. Zs.-Nagy, D. A. Sakharov in Experientia (1969)

Article

Study of neurosecretory cells ofHelix pomatia by intracellular dye injection

Каждая клетка исследованной группы #x043E;тсылает по аксонной ветви к периферическому депо и в синаптический нейропиль, а таюке имеет множество соматических отростков. Клетки получают богатый синаптический при...

D. A. Sakharov, J. Salánki in Experientia (1971)

Article

Effect of serotonin and acetylcholine on neurons in the central nervous system of snails

Differences in the distribution of neurons distinguished by their responses to serotonin and acetylcholine were found in the central nervous system ofHelix pomatia. When applied to the body of the neuron acetylch...

G. N. Korobtsov, D. A. Sakharov in Neurophysiology (1974)

Article

Neural serotonin receptors in active and hibernating helicid snails (Helix lucorum)

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, the effect is depolarization a...

D. A. Sakharov, G. N. Korobtsov in Experientia (1976)

Article

Two types of neuromuscular junctions in the pharyngeal retractor muscle ofHelix lucorum

The pharyngeal retractor muscle of the snailHelix lucorum is innervated by a pair of nerves containing axons of two types, for which there are two corresponding types of myoneural junctions with the muscle cells....

N. K. Ostroumova, D. V. Gulyaev, D. A. Sakharov in Neurophysiology (1977)

Article

Serotonin-containing cells in the ascidian endostyle

In the ascidian endostyle, all fluorescence due to serotonin is localized in the peripheral, iodine-binding area of the endostylar epithelium, which is homologous to the vertebrate thyroid. The amine appears t...

D. A. Sakharov, Natalia Salimova in Experientia (1982)

Article

Effects of dopamine antagonists on snail locomotion

Dopamine antagonists which affect the ergometrine-sensitive type of dopamine receptors produce characteristic motor disorders in a land snail,Helix pomatia L.

D. A. Sakharov, J. Salánki in Experientia (1982)

Article

Neuronal correlates of the serotonin-dependent behavior of the pteropod molluscClione limacina

A pharmacological model of hunting behavior, previously developed by the authors on the basis of the utilization of 5-hydroxytryptophan (5-HTP), a precursor of serotonin synthesis (5-IIT), was employed in orde...

E. A. Kabotyanskii, D. A. Sakharov in Neuroscience and Behavioral Physiology (1991)

Article

The long path of the snail

This article draws attention to certain episodes in the history of science associated with the use of the snail as an object of cellular neurobiology.

D. A. Sakharov in Neuroscience and Behavioral Physiology (1994)

Article

Neurotransmitter basis of mollusc behavior: Control of choice between the orienting and the defense response to the presentation of an unfamiliar object

The role of the serotoninergic and opioid systems in the choice between a passive defensive and an orienting response of the molluscLymnaea stagnalis to the presentation of an unfamiliar object was studied. Under...

V. E. D'yakonova, D. A. Sakharov in Neuroscience and Behavioral Physiology (1995)

Article

Effects of Serotonergic and Opioidergic Drugs on Escape Behaviors and Social Status of Male Crickets

 We examined the effects of selective serotonin depletion and opioid ligands on social rank and related escape behavior of the cricket Gryllus bimaculatus. Establishment of social rank in a pair of males affected...

V. E. Dyakonova, F.-W. Schürmann, D. A. Sakharov in Naturwissenschaften (1999)

Article

Pleural-buccal interneurons in the pteropod mollusc Clione limacina

Paired, Phe-Met-Arg-Phe-NH₂-ergic pleural-to-buccal projecting neurons of the pleural ganglia were suggested to be responsible for feeding arrest associated with defensive withdrawal in freshwater and terrestria...

M. A. Alania, Y. V. Panchin, D. A. Sakharov in Journal of Comparative Physiology A (1999)

Article

Transmitter-dependent switching of respiratory interneurons to the locomotor rhythm in the pulmonate molluskLymnaea

Cell RPeD1 of the pond snailLymnaea stagnalis is a dopaminergic neuron known to be involved in generating the respiratory rhythm. This report describes conditions in which RPeD1 follows the rhythm of another cent...

D. A. Sakharov, V. V. Tsyganov in Neuroscience and Behavioral Physiology (2000)

Article

Locomotor rhythms in the pond snail Lymnaea stagnalis: site of origin and neurotransmitter requirements

1. We have found that, in preparations of isolated CNS of the pond snail Lymnaea stagnalis, both serotonin (5HT)...

V. V. Tsyganov, D. A. Sakharov in Acta Biologica Hungarica (2000)

Article

Social aggressiveness of female and subordinate male crickets is released by opiate receptor antagonist

1. In the cricket Gryllus bimaculatus, effects of opiate receptor antagonist naloxone, 9 or 30 μg per animal, on...

Varya Dyakonova, R.-W. Schürmann, D. A. Sakharov in Acta Biologica Hungarica (2000)

Article

Morphology and physiology of pleural-to-buccal neurons coordinating defensive retraction with feeding arrest in the pond snail Lymnaea stagnalis

1. We have studied morphology, physiology and chemistry of a bilateral pair of pleural-to-buccal projecting neur...

Magda Alania, D. A. Sakharov in Acta Biologica Hungarica (2000)