PMID- 29733851 OWN - NLM STAT- MEDLINE DCOM- 20190503 LR - 20190503 IS - 1873-507X (Electronic) IS - 0031-9384 (Linking) VI - 194 DP - 2018 Oct 1 TI - Fish oil supplementation reverses behavioral and neurochemical alterations induced by swimming exercise in rats. PG - 95-102 LID - S0031-9384(18)30224-5 [pii] LID - 10.1016/j.physbeh.2018.05.001 [doi] AB - Diet and exercise are known to affect learning and memory. However, the effects of these interventions in the brain under development remains to be better investigated as the effects of high-intensity exercise. Moreover, it is still unclear how long the influence of diet and exercise lasts after the interventions are ceased. To investigate this, juvenile Wistar rats (30 days old) were supplemented with fish oil rich in polyunsaturated fatty acids (PUFAs) and performed swimming training for 50 days, 45 min per day, 5 times/week. The animals were assessed for locomotor activity with the open field test and for spatial memory with the object location task. To investigate neurochemical parameters such as fatty acids incorporation within the plasma membrane and brain-derived neurotrophic factor (BDNF) levels, the animals were euthanized, and the hippocampus dissected. These investigations were made at the end of the supplementation and exercise protocols and 21 days after the protocol has ended. Results indicate that high-intensity exercise impaired the spatial memory and decreased the levels of BDNF. Although supplementation led to PUFAs incorporation in plasma membrane, it did not prevent the harmful effect of exercise on memory. After 21 days of interruption, we observed that the supplementation reversed not only the deleterious effect of exercise on memory but also increased the BDNF levels. These results point to a complex influence of diet and exercise on spatial memory of juvenile rats, persisting after 21 days of interruption. CI - Copyright (c) 2018 Elsevier Inc. All rights reserved. FAU - Dos Santos, Fabiola Vila AU - Dos Santos FV AD - Laboratorio de Neurofisiologia, Departamento de Fisiologia, Universidade Federal do Parana, 81.531-990 Curitiba, PR, Brazil. FAU - Targa, Adriano D S AU - Targa ADS AD - Laboratorio de Neurofisiologia, Departamento de Fisiologia, Universidade Federal do Parana, 81.531-990 Curitiba, PR, Brazil. Electronic address: adrianotargads@gmail.com. FAU - Hammerschmidt, Ivilin AU - Hammerschmidt I AD - Laboratorio de Neurofisiologia, Departamento de Fisiologia, Universidade Federal do Parana, 81.531-990 Curitiba, PR, Brazil. FAU - Zanata, Silvio M AU - Zanata SM AD - Laboratorio de Neurobiologia, Departamento de Patologia Basica, Universidade Federal do Parana, 81.531-990 Curitiba, PR, Brazil. FAU - Maia, Flavia G AU - Maia FG AD - Laboratorio de Neurobiologia, Departamento de Patologia Basica, Universidade Federal do Parana, 81.531-990 Curitiba, PR, Brazil. FAU - Visentainer, Jesui V AU - Visentainer JV AD - Laboratorio de Quimica de Alimentos, Departamento de Quimica, Universidade Estadual de Maringa, 87.020-900 Maringa, PR, Brazil. FAU - Santos Junior, Oscar O AU - Santos Junior OO AD - Laboratorio de Quimica de Alimentos, Departamento de Quimica, Universidade Estadual de Maringa, 87.020-900 Maringa, PR, Brazil. FAU - da Costa, Belmira Andrade AU - da Costa BA AD - Laboratorio de Neurofisiologia, Departamento de Fisiologia e Farmacologia, Universidade Federal de Pernambuco, 50.670-901 Recife, PE, Brazil. FAU - Lagranha, Claudia J AU - Lagranha CJ AD - Nucleo de Eduacacao Fisica e Ciencias do Esporte, Universidade Federal de Pernambuco, 50.670-901 Recife, PE, Brazil. FAU - Ferraz, Anete C AU - Ferraz AC AD - Laboratorio de Neurofisiologia, Departamento de Fisiologia, Universidade Federal do Parana, 81.531-990 Curitiba, PR, Brazil. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180504 PL - United States TA - Physiol Behav JT - Physiology & behavior JID - 0151504 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Fatty Acids, Unsaturated) RN - 0 (Fish Oils) SB - IM MH - Animals MH - Brain-Derived Neurotrophic Factor/*metabolism MH - Cell Membrane/metabolism MH - Dietary Supplements MH - Fatty Acids, Unsaturated/*metabolism MH - Fish Oils/pharmacology/*therapeutic use MH - Hippocampus/drug effects/metabolism MH - Locomotion/physiology MH - Male MH - Memory Disorders/*diet therapy MH - Physical Conditioning, Animal/physiology MH - Rats MH - Spatial Memory/drug effects MH - Swimming/*physiology/*psychology OTO - NOTNLM OT - Brain-derived neurotrophic factor (BDNF) OT - Exercise OT - Fish oil supplementation OT - Spatial memory EDAT- 2018/05/08 06:00 MHDA- 2019/05/06 06:00 CRDT- 2018/05/08 06:00 PHST- 2017/12/13 00:00 [received] PHST- 2018/04/12 00:00 [revised] PHST- 2018/05/04 00:00 [accepted] PHST- 2018/05/08 06:00 [pubmed] PHST- 2019/05/06 06:00 [medline] PHST- 2018/05/08 06:00 [entrez] AID - S0031-9384(18)30224-5 [pii] AID - 10.1016/j.physbeh.2018.05.001 [doi] PST - ppublish SO - Physiol Behav. 2018 Oct 1;194:95-102. doi: 10.1016/j.physbeh.2018.05.001. Epub 2018 May 4.