BALB/c mice were trained in a partial acquisition session of an appetitive bar-pressing task. They then received an immediate post-acquisition i.p. injection of either saline or apamin 0.2 mg kg-1. Each group was submitted to a retention test that was delayed either 25, 85 or 180 min after initial acquisition. In saline-injected groups retention of the original training was a U-shaped function of intersession interval with a significant drop in performance (Kamin-like effect) at the 85 min time interval. In contrast, at this same time, apamin injected subjects made significantly more reinforced responses than control animals. The suppression of the Kamin-like effect by apamin could be a consequence of an acceleration of the neuronal mechanisms implicated in consolidation and long-term memory storage processes.
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http://dx.doi.org/10.1097/00001756-199506090-00016 | DOI Listing |
Pharmacol Rep
June 2019
Department of Surgery and Anatomy, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil. Electronic address:
Background: There is a definite association between antipsychotic drugs and arterial hypertension. However, endothelium functions are scarcely considered. This investigation was carried out to study the mechanisms involved in clozapine endothelium-dependent vascular reactivity.
View Article and Find Full Text PDFNeuroreport
June 1995
Laboratoire de Neurosciences Comportementales et Cognitives, CNRS URA 339, Université de Bordeaux 1, Talence, France.
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