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Chihab AW, Andrianov VV, Bogodvid TK, Deryabina IB, Sylantyeva DI, Gainutdinov KL. Serotonin Synthesis Inhibition by Para-Chlorophenylalanine Impairs Defensive Reactions of Aversive Learning and Long-term Sensitization in Terrestrial Snails. BioNanoSci 2021. [DOI: 10.1007/s12668-020-00814-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Silantyeva DI, Andrianov VV, Bogodvid TK, Deryabina IB, Muranova LN, Vinarskaya AK, Gainutdinov KL. The Role of Intracellular Calcium in Changing of ElectricalCharacteristics of Premotor Interneurons in Intact Snails and Snails During Various Forms of Plasticity. BioNanoSci 2019; 9:903-8. [DOI: 10.1007/s12668-019-00669-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Bogodvid TK, Andrianov VV, Deryabina IB, Muranova LN, Silantyeva DI, Vinarskaya A, Balaban PM, Gainutdinov KL. Responses of Withdrawal Interneurons to Serotonin Applications in Naïve and Learned Snails Are Different. Front Cell Neurosci 2017; 11:403. [PMID: 29311833 PMCID: PMC5735116 DOI: 10.3389/fncel.2017.00403] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 12/04/2017] [Indexed: 02/04/2023] Open
Abstract
Long-term changes in membrane potential after associative training were described previously in identified premotor interneurons for withdrawal of the terrestrial snail Helix. Serotonin was shown to be a major transmitter involved in triggering the long-term changes in mollusks. In the present study we compared the changes in electrophysiological characteristics of identifiable premotor interneurons for withdrawal in response to bath applications of serotonin (5-HT) or serotonin precursor 5-hydroxytryptophan (5-HTP) in preparations from naïve, neurotoxin-injected or associatively trained snails. It was found that 5-HT or 5-HTP applications caused a significant decrease of membrane potential in premotor interneurons of naïve snails, associatively trained snails and snails with impaired serotonergic system by injection of a selective neurotoxin 5,7-dihydroxytryptamine (5,7-DHT) 1 week before the experiments. Applications of 5-HT or 5-HTP did not cause significant changes in the action potential (AP) threshold potential of these neurons in naïve snails. Conversely, applications of 5-HT or 5-HTP to the premotor interneurons of previously trained or 5,7-DHT-injected snails caused a significant increase in the firing threshold potential in spite of a depolarizing shift of the resting membrane potential. Results demonstrate that responsiveness of premotor interneurons to extracellularly applied 5-HT or 5-HTP changes for days after the associative training or serotonin depletion. Similarity of the effects in trained and 5,7-DHT-injected animals may be due to massive release of serotonin elicited by 5,7-DHT injection. Our results suggest that serotonin release due to aversive conditionining or elicited by the neurotoxin administration triggers similar changes in resting membrane potential and AP threshold in response to bath applications of 5-HT or its precursor 5-HTP.
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Affiliation(s)
- Tatiana K. Bogodvid
- Laboratory of Neuroreabilitation of Motor Disorders, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia
- Department of Biomedical Sciences, Volga Region State Academy of Physical Culture, Sport and Tourism, Kazan, Russia
| | - Vyatcheslav V. Andrianov
- Laboratory of Neuroreabilitation of Motor Disorders, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia
| | - Irina B. Deryabina
- Laboratory of Neuroreabilitation of Motor Disorders, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia
| | - Lyudmila N. Muranova
- Laboratory of Neuroreabilitation of Motor Disorders, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia
| | - Dinara I. Silantyeva
- Laboratory of Neuroreabilitation of Motor Disorders, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia
| | - Aliya Vinarskaya
- Laboratory of Cellular Neurobiology of Learning, Institute of Higher Nervous Activity and Neurophysiology, Russian Academy of Sciences, Moscow, Russia
| | - Pavel M. Balaban
- Laboratory of Cellular Neurobiology of Learning, Institute of Higher Nervous Activity and Neurophysiology, Russian Academy of Sciences, Moscow, Russia
| | - Khalil L. Gainutdinov
- Laboratory of Neuroreabilitation of Motor Disorders, Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia
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Abstract
The efficiency of neural circuits can be enhanced not only by increasing synaptic strength but also by increasing neuronal intrinsic excitability. Three major types of activity-dependent long-term potentiation of intrinsic excitability (LTP-IE) have been well defined: decreased action potential (AP) threshold, reduced afterhyperpolarization (AHP), and attenuated dendritic propagation. The ionic basis and induction pathways for these three types of LTP-IE have been largely revealed recently. These intrinsic plasticities and their cooperation enrich the functions fulfilled by neurons, and may serve as a supplementary mechanism for learning and memory.
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Affiliation(s)
- Jun Xu
- Department of Cell Biology and Anatomy, New York Medical College, Valhalla, NY 10595, USA
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Affiliation(s)
- Wei Zhang
- Department of Neuroscience, The Johns Hopkins University School of Medicine, 725 North Wolfe Street, Baltimore, Maryland 21205, USA
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