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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

A Single Bout of Resistance Exercise Improves Memory Consolidation and Increases the Expression of Synaptic Proteins in the Hippocampus

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Author(s):
Fernandes, Jansen ; Kramer Soares, Juliana Carlota ; Zaccaro do Amaral Baliego, Luiz Guilherme ; Arida, Ricardo Mario
Total Authors: 4
Document type: Journal article
Source: HIPPOCAMPUS; v. 26, n. 8, p. 1096-1103, AUG 2016.
Web of Science Citations: 7
Abstract

Over the past decade, several studies have indicated that chronic resistance exercise (i.e., strength training, weight lifting, etc.) is beneficial for brain health and cognitive function. However, little is known about the effects of a single bout of resistance exercise on brain function, particularly on memory consolidation. Therefore, the purpose of the present study is to examine the effects of a single bout of resistance exercise applied immediately after the training of fear conditioning on memory consolidation and on the expression of IGF-1 and synaptic proteins in the hippocampus. Male Wistar rats were familiarized with climbing a ladder without a load for 3 days and randomly assigned into control (CTL) and resistance exercise (RES) groups. The RES group was subjected to a single bout of resistance exercise applied immediately after fear conditioning training. Subsequently, the animals were tested for contextual (24 h) and tone (48 h) fear memory. Another group of animals were subjected to a single bout of resistance exercise and euthanized 24 h later for hippocampal analysis of IGF-1 and synaptic proteins (synapsin I, synaptophysin, and PSD-95). The exercised rats improved contextual but not tone fear memory. Hippocampal IGF-1 was not altered by resistance exercise. However, the levels of synapsin I, synaptophysin, and PSD-95 increased significantly in the RES group. The results suggested that a single bout of resistance exercise applied immediately after fear conditioning could improve contextual memory, probably through the activation of pre-and postsynaptic machinery required for memory consolidation. (C) 2016 Wiley Periodicals, Inc. (AU)

FAPESP's process: 13/13725-3 - Influence of Aerobic Exercise on the Expression and Distribution of microRNAs in the Hippocampal Formation of Adult Rats
Grantee:Jansen Fernandes
Support Opportunities: Scholarships in Brazil - Doctorate