PMID- 35582933 OWN - NLM STAT- MEDLINE DCOM- 20220929 LR - 20221104 IS - 2574-173X (Electronic) IS - 2574-173X (Linking) VI - 42 IP - 3 DP - 2022 Sep TI - Effects of high-fat diet on nutrient metabolism and cognitive functions in young APPKI(NL-G-F/NL-G-F) mice. PG - 272-280 LID - 10.1002/npr2.12257 [doi] AB - AIM: Type 2 diabetes mellitus (T2DM) is an increased risk factor for Alzheimer's disease (AD); however, the relationship between the 2 conditions is controversial. High-fat diet (HFD) causes cognitive impairment with/without Abeta accumulation in middle-aged or aged transgenic (Tg) and knock-in (KI) AD mouse models, except for metabolic disorders, which commonly occur in all mice types. Alternatively, whether HFD in early life has an impact on nutrient metabolism and neurological phenotypes in young AD mouse models is not known. In the present study, we examined the effects of HFD on young APPKI(NL-G-F/NL-G-F) mice, one of the novel KI-AD mouse models. METHODS: The mice were categorized by diet into 2 experimental groups, normal diet (ND) and HFD. Four-week-old wild-type (WT) and APPKI(NL-G-F/NL-G-F) mice were fed ND or HFD for 9 weeks. Both types of mice on ND and HFD were examined during young adulthood. RESULTS: HFD caused T2DM-related metabolic disturbances in both young WT and APPKI(NL-G-F/NL-G-F) mice, whereas impaired thermoregulation and shortage of alternative energy sources specifically occurred in young APPKI(NL-G-F/NL-G-F) mice. However, HFD had no impact on the cognitive function, Abeta levels, and phosphorylation of hippocampal insulin receptor substrate 1 (IRS1) at all the 3 Ser sites in both types of mice. CONCLUSION: HFD is effective in causing metabolic disturbances in young WT and APPKI(NL-G-F/NL-G-F) mice but is ineffective in inducing neurological disorders in both types of mice, suggesting that the aging effects, along with long-term HFD, facilitate neurological alterations. CI - (c) 2022 The Authors. Neuropsychopharmacology Reports published by John Wiley & Sons Australia, Ltd on behalf of The Japanese Society of Neuropsychopharmacology. FAU - Wang, Wei AU - Wang W AUID- ORCID: 0000-0002-6718-4954 AD - Department of Integrative Neuroscience, National Center for Geriatrics and Gerontology, Aichi, Japan. FAU - Tanokashira, Daisuke AU - Tanokashira D AD - Department of Integrative Neuroscience, National Center for Geriatrics and Gerontology, Aichi, Japan. FAU - Shibayama, Yudai AU - Shibayama Y AD - Department of Integrative Neuroscience, National Center for Geriatrics and Gerontology, Aichi, Japan. FAU - Tsuji, Ryuhei AU - Tsuji R AD - Department of Integrative Neuroscience, National Center for Geriatrics and Gerontology, Aichi, Japan. FAU - Maruyama, Megumi AU - Maruyama M AD - Department of Integrative Neuroscience, National Center for Geriatrics and Gerontology, Aichi, Japan. FAU - Kuroiwa, Chiemi AU - Kuroiwa C AD - Department of Integrative Neuroscience, National Center for Geriatrics and Gerontology, Aichi, Japan. FAU - Saito, Takashi AU - Saito T AD - Laboratory for Proteolytic Neuroscience, RIKEN Center for Brain Science, Saitama, Japan. FAU - Saido, Takaomi C AU - Saido TC AD - Department of Neurocognitive Science, Institute of Brain Science, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan. FAU - Taguchi, Akiko AU - Taguchi A AUID- ORCID: 0000-0003-2893-8685 AD - Department of Integrative Neuroscience, National Center for Geriatrics and Gerontology, Aichi, Japan. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20220518 PL - United States TA - Neuropsychopharmacol Rep JT - Neuropsychopharmacology reports JID - 101719700 RN - 0 (Amyloid beta-Peptides) RN - 0 (Insulin Receptor Substrate Proteins) SB - IM MH - *Alzheimer Disease/etiology/metabolism MH - Amyloid beta-Peptides/metabolism MH - Animals MH - Cognition MH - *Diabetes Mellitus, Type 2/complications/metabolism MH - Diet, High-Fat MH - Disease Models, Animal MH - Insulin Receptor Substrate Proteins/metabolism MH - Mice MH - Nutrients PMC - PMC9515707 OTO - NOTNLM OT - Alzheimer's disease OT - cognitive function OT - high-fat diet OT - hippocampus OT - insulin receptor substrate 1 OT - knock-in mouse model OT - nutrient metabolism OT - type 2 diabetes mellitus COIS- The authors declare no conflict of interest. EDAT- 2022/05/19 06:00 MHDA- 2022/09/30 06:00 PMCR- 2022/05/18 CRDT- 2022/05/18 04:53 PHST- 2022/03/29 00:00 [revised] PHST- 2021/12/23 00:00 [received] PHST- 2022/04/16 00:00 [accepted] PHST- 2022/05/19 06:00 [pubmed] PHST- 2022/09/30 06:00 [medline] PHST- 2022/05/18 04:53 [entrez] PHST- 2022/05/18 00:00 [pmc-release] AID - NPR212257 [pii] AID - 10.1002/npr2.12257 [doi] PST - ppublish SO - Neuropsychopharmacol Rep. 2022 Sep;42(3):272-280. doi: 10.1002/npr2.12257. Epub 2022 May 18.