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Abstract:

Although some of the neuronal substrates that support memory process have been shown in optic ganglia, the brain areas activated by memory process are still unknown in crustaceans. Heat shock proteins (HSPs) are synthesized in the CNS not only in response to traumas but also after changes in metabolic activity triggered by the processing of different types of sensory information. Indeed, the expression of citosolic/nuclear forms of HSP70 (HSC/HSP70) has been repeatedly used as a marker for increases in neural metabolic activity in several processes, including psychophysiological stress, fear conditioning, and spatial learning in vertebrates. Previously, we have shown that, in the crab Chasmagnathus, two different environmental challenges, water deprivation and heat shock, trigger a rise in the number of glomeruli of the olfactory lobes (OLs) expressing HSC/HSP70. In this study, we initially performed a morphometric analysis and identified a total of 154 glomeruli in each OL of Chasmagnathus. Here, we found that crabs exposed to food odor stimuli also showed a significant rise in the number of olfactory glomeruli expressing HSC/HSP70. In the crab Chasmagnathus, a powerful memory paradigm based on a change in its defensive strategy against a visual danger stimulus (VDS) has been extensively studied. Remarkably, the iterative presentation of a VDS caused an increase as well. This increase was triggered in animals visually stimulated using protocols that either build up a long-term memory or generate only short-term habituation. Besides, memory reactivation was sufficient to trigger the increase in HSC/HSP70 expression in the OL. Present and previous results strongly suggest that, directly or indirectly, an increase in arousal is a sufficient condition to bring about an increase in HSC/HSP70 expression in the OL of Chasmagnathus. © 2011 IBRO.

Registro:

Documento: Artículo
Título:Food odor, visual danger stimulus, and retrieval of an aversive memory trigger heat shock protein HSP70 expression in the olfactory lobe of the crab Chasmagnathus granulatus
Autor:Frenkel, L.; Dimant, B.; Suárez, L.D.; Portiansky, E.L.; Delorenzi, A.
Filiación:Laboratorio de Neurobiología de la Memoria, Dto. Fisiología y Biologia Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, IFIBYNE-CONICET, Argentina
Laboratorio de Análisis de Imágenes, Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, Argentina
Palabras clave:Arousal; Crustaceans; Heat shock proteins; Memory; Olfactory lobes; Visual stimulus; heat shock protein 70; animal experiment; animal tissue; arousal; article; aversive memory; Chasmagnathus granulatus; controlled study; crab; defensive behavior; food odor; glomerulus; habituation; immunohistochemistry; long term memory; memory; morphometrics; nonhuman; olfactory bulb; organoleptic property; priority journal; protein analysis; protein expression; recall; smelling; visual stimulation; Animals; Brachyura; Brain Mapping; Escape Reaction; Female; Food; Gene Expression Regulation; Habituation, Psychophysiologic; HSP70 Heat-Shock Proteins; Mental Recall; Odors; Olfactory Pathways; Photic Stimulation; Synapsins; Time Factors
Año:2012
Volumen:201
Página de inicio:239
Página de fin:251
DOI: http://dx.doi.org/10.1016/j.neuroscience.2011.10.052
Título revista:Neuroscience
Título revista abreviado:Neuroscience
ISSN:03064522
CODEN:NRSCD
CAS:HSP70 Heat-Shock Proteins; Synapsins
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03064522_v201_n_p239_Frenkel

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Citas:

---------- APA ----------
Frenkel, L., Dimant, B., Suárez, L.D., Portiansky, E.L. & Delorenzi, A. (2012) . Food odor, visual danger stimulus, and retrieval of an aversive memory trigger heat shock protein HSP70 expression in the olfactory lobe of the crab Chasmagnathus granulatus. Neuroscience, 201, 239-251.
http://dx.doi.org/10.1016/j.neuroscience.2011.10.052
---------- CHICAGO ----------
Frenkel, L., Dimant, B., Suárez, L.D., Portiansky, E.L., Delorenzi, A. "Food odor, visual danger stimulus, and retrieval of an aversive memory trigger heat shock protein HSP70 expression in the olfactory lobe of the crab Chasmagnathus granulatus" . Neuroscience 201 (2012) : 239-251.
http://dx.doi.org/10.1016/j.neuroscience.2011.10.052
---------- MLA ----------
Frenkel, L., Dimant, B., Suárez, L.D., Portiansky, E.L., Delorenzi, A. "Food odor, visual danger stimulus, and retrieval of an aversive memory trigger heat shock protein HSP70 expression in the olfactory lobe of the crab Chasmagnathus granulatus" . Neuroscience, vol. 201, 2012, pp. 239-251.
http://dx.doi.org/10.1016/j.neuroscience.2011.10.052
---------- VANCOUVER ----------
Frenkel, L., Dimant, B., Suárez, L.D., Portiansky, E.L., Delorenzi, A. Food odor, visual danger stimulus, and retrieval of an aversive memory trigger heat shock protein HSP70 expression in the olfactory lobe of the crab Chasmagnathus granulatus. Neuroscience. 2012;201:239-251.
http://dx.doi.org/10.1016/j.neuroscience.2011.10.052