NDLI: In Vivo Investigation of Genome Activity and Synaptic Plasticity of Neurons in Snails During Learning

Content Provider	Springer Nature Link
Author	Shevelkin, A. V. Kozyrev, S. A. Nikitin, V. P. Sherstnev, V. V.
Copyright Year	2005
Abstract	The present report describes in vivo investigations of genome activity and its role in the mechanisms forming long-term synaptic plasticity in defensive behavior command neuron LPl1 during the acquisition of nociceptive sensitization by common snails. Transcription processes were recorded using SYTO 16, a specific fluorescent indicator of DNA activity, along with in vivo computer image analysis. Studies in control snails showed that application of nociceptive stimuli to the head led to biphasic changes in the bioelectrical responses of neurons to tactile and chemical stimulation-depression of responses in the short-term stage (during the 1 h after training) and their facilitation during the long-term stage of sensitization (more than 24 h). There were marked increases in fluorescence over the nucleus of the command neuron stained with SYTO 16 at 15–20 min from the start of training, this lasting 4–5 h. Acquisition of sensitization in the presence of the RNA synthesis inhibitor actinomycin D (20 μM) to the neuron led to the complete elimination of changes in fluorescence and synaptic facilitation in the responses of LPl1 to sensory stimulation in the long-term stage of sensitization but had no effect during the short-term stage of sensitization. Actinomycin D given 30 min after the end of acquisition of sensitization (1 h after the start) had no effect on the dynamics of fluorescence or synaptic facilitation. Thus, the acquisition of nociceptive sensitization is accompanied by a rapid (within 15–20 min) activation of the DNA of neuron LPl1 and subsequent (about 1 h) display of long-term synaptic facilitation. Induction of both processes was suppressed by the RNA synthesis inhibitor over a relatively short time period-1 h from the moment at which training started.
Starting Page	595
Ending Page	603
Page Count	9
File Format	PDF
ISSN	00970549
Journal	Neuroscience and Behavioral Physiology
Volume Number	35
Issue Number	6
e-ISSN	1573899X
Language	English
Publisher	Kluwer Academic Publishers-Consultants Bureau
Publisher Date	2005-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	learning nociceptive sensitization neuron synaptic plasticity genome actinomycin D mollusk SYTO 16 image analysis Neurosciences Behavioural Sciences Neurobiology
Content Type	Text
Resource Type	Article
Subject	Neuroscience

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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