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Behavioral alterations induced by repeated saxitoxin exposure in drinking water J. Venom. Anim. Toxins incl. Trop. Dis.
Diehl,Felipe; Ramos,Patricia Baptista; Santos,Juliane Marques dos; Barros,Daniela Martí; Yunes,João Sarkis.
Abstract Background Blooms of the saxitoxin-producing cyanobacterium Cylindrospermopsis raciborskii have been contaminating drinking water reservoirs in Brazil for many years. Although acute effects of saxitoxin intoxication are well known, chronic deleterious outcomes caused by repeated saxitoxin exposure still require further investigation. The aim of the present work is to investigate the effects of consumption of drinking water contaminated with C. raciborskii for 30 days on learning and memory processes in rats. Methods The effects of saxitoxin (3 or 9 μg/L STX equivalents) or cyanobacteria on behavior was determined using the open field habituation task, elevated plus maze anxiety model task, inhibitory avoidance task, and referential Morris...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Saxitoxin; Drinking water; Behavior; Aversive memory; Spatial memory; Rats.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992016000100314
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The evidence for hippocampal long-term potentiation as a basis of memory for simple tasks Anais da ABC (AABC)
Izquierdo,Iván; Cammarota,Martín; Silva,Weber C. Da; Bevilaqua,Lia R.M.; Rossato,Janine I.; Bonini,Juliana S.; Mello,Pamela; Benetti,Fernando; Costa,Jaderson C.; Medina,Jorge H..
Long-term potentiation (LTP) is the enhancement of postsynaptic responses for hours, days or weeks following the brief repetitive afferent stimulation of presynaptic afferents. It has been proposed many times over the last 30 years to be the basis of long-term memory. Several recent findings finally supported this hypothesis: a) memory formation of one-trial avoidance learning depends on a series of molecular steps in the CA1 region of the hippocampus almost identical to those of LTP in the same region; b)hippocampal LTP in this region accompanies memory formation of that task and of another similar task. However, CA1 LTP and the accompanying memory processes can be dissociated, and in addition plastic events in several other brain regions(amygdala,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Long-term potentiation; Hippocampus; Declarative memory; Aversive memory.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652008000100007
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