PMID- 29655945 OWN - NLM STAT- MEDLINE DCOM- 20190222 LR - 20190222 IS - 1872-7972 (Electronic) IS - 0304-3940 (Linking) VI - 676 DP - 2018 May 29 TI - Long term Westernized diet leads to region-specific changes in brain signaling mechanisms. PG - 85-91 LID - S0304-3940(18)30275-1 [pii] LID - 10.1016/j.neulet.2018.04.014 [doi] AB - Western diets, high in fat and energy, are associated with cognitive deficits in humans and animal models, but the underlying mechanisms are not fully elucidated. This includes whether diet-induced dyslipidemia per se negatively impacts brain signaling. Here we investigate the effects of dyslipidemia induced by two high fat diets with or without high sucrose on hippocampal and frontal cortical oxidative stress, brain-derived neurotrophic factor (BDNF) and down-stream markers of synaptic plasticity, as well as alterations in monoaminergic neurotransmitter levels. A high fat diet was associated with decreased antioxidant status (vitamin C), increased serotonin in the frontal cortex, and increased ratio of phosphorylated Ca(2+)/calmodulin-dependent protein kinase II in the hippocampus, while a high fat and sucrose diet decreased levels of vitamin C in the frontal cortex and BDNF in the hippocampus. Markers of dyslipidemia correlated significantly with cerebral vitamin C levels, monoaminergic neurotransmitters and metabolites in the frontal cortex, but not in the hippocampus. Thus, a high fat diet caused regional alterations in antioxidant levels, neurochemistry and molecular markers in the non-obese dyslipidemic guinea pig. CI - Copyright (c) 2018 The Authors. Published by Elsevier B.V. All rights reserved. FAU - Hansen, Stine Normann AU - Hansen SN AD - Experimental Animal Models, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Ridebanevej 9, 1.Floor, DK-1870 Frederiksberg C, Denmark. FAU - Ipsen, David Hojland AU - Ipsen DH AD - Experimental Animal Models, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Ridebanevej 9, 1.Floor, DK-1870 Frederiksberg C, Denmark. FAU - Schou-Pedersen, Anne Marie AU - Schou-Pedersen AM AD - Experimental Animal Models, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Ridebanevej 9, 1.Floor, DK-1870 Frederiksberg C, Denmark. FAU - Lykkesfeldt, Jens AU - Lykkesfeldt J AD - Experimental Animal Models, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Ridebanevej 9, 1.Floor, DK-1870 Frederiksberg C, Denmark. FAU - Tveden-Nyborg, Pernille AU - Tveden-Nyborg P AD - Experimental Animal Models, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Ridebanevej 9, 1.Floor, DK-1870 Frederiksberg C, Denmark. Electronic address: ptn@sund.ku.dk. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180412 PL - Ireland TA - Neurosci Lett JT - Neuroscience letters JID - 7600130 RN - 0 (Brain-Derived Neurotrophic Factor) SB - IM MH - Animals MH - Brain/*metabolism MH - Brain-Derived Neurotrophic Factor/metabolism MH - Diet, High-Fat/adverse effects MH - Diet, Western/*adverse effects MH - Dyslipidemias/etiology/*metabolism MH - Female MH - Frontal Lobe/*metabolism MH - Guinea Pigs MH - Hippocampus/*metabolism MH - Neuronal Plasticity MH - Signal Transduction OTO - NOTNLM OT - Brain-derived neurotrophic factor OT - Cavia porcellus OT - Dyslipidemia OT - Monoaminergic neurotransmitters OT - Oxidative stress OT - Synaptic plasticity EDAT- 2018/04/16 06:00 MHDA- 2019/02/23 06:00 CRDT- 2018/04/16 06:00 PHST- 2017/11/27 00:00 [received] PHST- 2018/04/04 00:00 [revised] PHST- 2018/04/06 00:00 [accepted] PHST- 2018/04/16 06:00 [pubmed] PHST- 2019/02/23 06:00 [medline] PHST- 2018/04/16 06:00 [entrez] AID - S0304-3940(18)30275-1 [pii] AID - 10.1016/j.neulet.2018.04.014 [doi] PST - ppublish SO - Neurosci Lett. 2018 May 29;676:85-91. doi: 10.1016/j.neulet.2018.04.014. Epub 2018 Apr 12.