PMID- 22836186 OWN - NLM STAT- MEDLINE DCOM- 20130423 LR - 20220330 IS - 1875-8908 (Electronic) IS - 1387-2877 (Linking) VI - 32 IP - 2 DP - 2012 TI - Combination of apolipoprotein E4 and high carbohydrate diet reduces hippocampal BDNF and arc levels and impairs memory in young mice. PG - 341-55 LID - 10.3233/JAD-2012-120697 [doi] AB - The presence of the E4 allele of apolipoprotein E (apoE) is the strongest known genetic risk factor for sporadic Alzheimer's disease (AD). Other risk factors for developing AD have been identified, including lifestyle such as dietary habits. The present study was designed to explore the impact of the interaction between variant human apoE isoforms and a high carbohydrate diet (HCD) on mechanisms behind learning and memory retention. As an investigative model, we compared young apoE3 and apoE4 target replacement mice fed on a HCD for 6 months. Our results indicate that HCD compromises memory processes in apoE4 mice. ApoE4 mice on HCD showed decreased activity-regulated cytoskeletal-associated protein (Arc) and brain derived neurotrophic factor (BDNF) levels, as well as decreased BDNF signaling in the hippocampus. In contrast, apoE3 mice were resistant to the deleterious effects of HCD on both behavior and memory-related proteins. Our results support the hypothesis that already in mid-life, genetic, and environmental risk factors act together on the mechanisms behind cognitive impairment. FAU - Maioli, Silvia AU - Maioli S AD - Department of Neurobiology, Care Sciences and Society, Karolinska Institutet-Alzheimer Disease Research Center, NOVUM, Stockholm, Sweden. Silvia.Maioli@ki.se FAU - Puerta, Elena AU - Puerta E FAU - Merino-Serrais, Paula AU - Merino-Serrais P FAU - Fusari, Laura AU - Fusari L FAU - Gil-Bea, Francisco AU - Gil-Bea F FAU - Rimondini, Roberto AU - Rimondini R FAU - Cedazo-Minguez, Angel AU - Cedazo-Minguez A LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Netherlands TA - J Alzheimers Dis JT - Journal of Alzheimer's disease : JAD JID - 9814863 RN - 0 (Apolipoprotein E4) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Cytoskeletal Proteins) RN - 0 (Dietary Carbohydrates) RN - 0 (Nerve Tissue Proteins) RN - 0 (activity regulated cytoskeletal-associated protein) SB - IM MH - Animals MH - Apolipoprotein E4/*genetics/metabolism MH - Avoidance Learning/drug effects/physiology MH - Brain-Derived Neurotrophic Factor/*metabolism MH - Cytoskeletal Proteins/*metabolism MH - Dietary Carbohydrates/*administration & dosage MH - Hippocampus/*drug effects/metabolism MH - Maze Learning/drug effects/physiology MH - Memory/*drug effects/physiology MH - Mice MH - Mice, Transgenic MH - Nerve Tissue Proteins/*metabolism EDAT- 2012/07/28 06:00 MHDA- 2013/04/24 06:00 CRDT- 2012/07/28 06:00 PHST- 2012/07/28 06:00 [entrez] PHST- 2012/07/28 06:00 [pubmed] PHST- 2013/04/24 06:00 [medline] AID - B5T05494H713RP5R [pii] AID - 10.3233/JAD-2012-120697 [doi] PST - ppublish SO - J Alzheimers Dis. 2012;32(2):341-55. doi: 10.3233/JAD-2012-120697.