Aerobic exercise attenuates inhibitory avoidance memory deficit induced by paradoxical sleep deprivation in rats.

Autor: Fernandes J; Department of Physiology, Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil., Baliego LG, Peixinho-Pena LF, de Almeida AA, Venancio DP, Scorza FA, de Mello MT, Arida RM
Jazyk: angličtina
Zdroj: Brain research [Brain Res] 2013 Sep 05; Vol. 1529, pp. 66-73. Date of Electronic Publication: 2013 Jul 26.
DOI: 10.1016/j.brainres.2013.07.019
Abstrakt: The deleterious effects of paradoxical sleep deprivation (SD) on memory processes are well documented. Physical exercise improves many aspects of brain functions and induces neuroprotection. In the present study, we investigated the influence of 4 weeks of treadmill aerobic exercise on both long-term memory and the expression of synaptic proteins (GAP-43, synapsin I, synaptophysin, and PSD-95) in normal and sleep-deprived rats. Adult Wistar rats were subjected to 4 weeks of treadmill exercise training for 35 min, five times per week. Twenty-four hours after the last exercise session, the rats were sleep-deprived for 96 h using the modified multiple platform method. To assess memory after SD, all animals underwent training for the inhibitory avoidance task and were tested 24h later. The aerobic exercise attenuated the long-term memory deficit induced by 96 h of paradoxical SD. Western blot analysis of the hippocampus revealed increased levels of GAP-43 in exercised rats. However, the expression of synapsin I, synaptophysin, and PSD-95 was not modified by either exercise or SD. Our results suggest that an aerobic exercise program can attenuate the deleterious effects of SD on long-term memory and that this effect is not directly related to changes in the expression of the pre- and post-synaptic proteins analyzed in the study.
(Copyright © 2013 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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