A single pre-training glucose injection induces memory facilitation in rodents performing various tasks: contribution of acidic fibroblast growth factor

Neuroscience
A J LiT Hori

Abstract

Effects of a pre-training intraperitoneal glucose injection on learning and memory were tested using two tasks: passive avoidance and Morris water maze. In the former task, mice that had received glucose 2 h prior (but not 1, 3, or 5 h prior) to a trial that combined acquisition with passive avoidance of foot shock showed a significantly increased retention latency when tested 24 h later. Thus, this effect was time-dependent, and it was also found to be dose-dependent by further experiment. In contrast, 2-deoxy-D-glucose and fructose had no such effect. In the Morris water maze task, glucose injection 2 or 3 h before a block of trials enhanced the spatial memory performance of mice. These glucose-induced memory-facilitation effects were abolished by an intracerebroventricular injection of anti-acidic fibroblast growth factor antibody 30 min before the glucose injection, suggesting a critical role for endogenous acidic fibroblast growth factor in this facilitatory effect. Furthermore, continuous intracerebroventricular infusion of acidic fibroblast growth factor in rats significantly increased retention latency (when tested repeatedly on successive days using a passive avoidance task). Our earlier studies demonstrated that brain...Continue Reading

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Citations

Nov 15, 2007·Applied Microbiology and Biotechnology·Yadong HuangXiaokun Li
Dec 22, 2009·Acta Neuropathologica·Marc R Del Bigio
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