PMID- 29050859 OWN - NLM STAT- MEDLINE DCOM- 20180302 LR - 20181024 IS - 1872-6240 (Electronic) IS - 0006-8993 (Linking) VI - 1678 DP - 2018 Jan 1 TI - Neuroprotective effects of a triple GLP-1/GIP/glucagon receptor agonist in the APP/PS1 transgenic mouse model of Alzheimer's disease. PG - 64-74 LID - S0006-8993(17)30459-6 [pii] LID - 10.1016/j.brainres.2017.10.012 [doi] AB - Type 2 diabetes mellitus (T2DM) is a risk factor for Alzheimer disease (AD). Previous studies have shown that the incretin hormones glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP) that have anti-diabetic properties show very promising effects in animal models of AD. Glucagon (Gcg) is a hormone and growth-factor, and the Gcg receptor is expressed in the brain. Here we test the effects of a triple receptor agonist (TA), which activates GIP-1, GIP and glucagon receptors at the same time. In the present study, the effects of the TA were evaluated in the APP/PS1 transgenic mouse model of AD. The TA was injected once-daily (10 nmol/kg i.p.) for two months. The results showed that treatment with TA significantly reversed the memory deficit in the APP/PS1 mice in a spatial water maze test. Moreover, the drug reduced levels of the mitochondrial pro-apoptotic signaling molecule BAX, increased the anti-apoptotic signaling molecule Bcl-2 and enhanced the levels of BDNF, a key growth factor that protects synaptic function. Levels of synaptophysin were enhanced, demonstrating protection from synaptic loss that is observed in AD. Neurogenesis in the dentate gyrus was furthermore enhanced as shown in the increase of doublecortin positive cells. Furthermore, TA treatment reduced the total amount of beta-amyloid, reduced neuroinflammation (activated microglia and astrocytes), and oxidative stress in the cortex and hippocampus. Thus, these findings show that novel TAs are a promising lead for the design of future treatment strategies in AD. CI - Copyright (c) 2017 Elsevier B.V. All rights reserved. FAU - Tai, Jingjing AU - Tai J AD - Key Laboratory of Cellular Physiology, Shanxi Medical University, Taiyuan, Shanxi, PR China. FAU - Liu, Weizhen AU - Liu W AD - Key Laboratory of Cellular Physiology, Shanxi Medical University, Taiyuan, Shanxi, PR China. FAU - Li, Yanwei AU - Li Y AD - Key Laboratory of Cellular Physiology, Shanxi Medical University, Taiyuan, Shanxi, PR China; Department of Human Anatomy, Medical College, Shaoyang University, Shaoyang, Hunan, PR China. FAU - Li, Lin AU - Li L AD - Key Laboratory of Cellular Physiology, Shanxi Medical University, Taiyuan, Shanxi, PR China. Electronic address: linlilin999@163.com. FAU - Holscher, Christian AU - Holscher C AD - Second Hospital Neurology Dept., Shanxi Medical University, Taiyuan, Shanxi, PR China; Biomedical and Life Science, Faculty of Health and Medicine, Lancaster University, Lancaster LA1 4YQ, UK. LA - eng PT - Journal Article DEP - 20171016 PL - Netherlands TA - Brain Res JT - Brain research JID - 0045503 RN - 0 (Amyloid beta-Protein Precursor) RN - 0 (Glucagon-Like Peptide-1 Receptor) RN - 0 (Neuroprotective Agents) RN - 0 (Presenilin-1) RN - 0 (Receptors, Gastrointestinal Hormone) RN - 0 (Receptors, Glucagon) RN - 89750-14-1 (Glucagon-Like Peptide 1) RN - 9007-92-5 (Glucagon) RN - D6H00MV7K8 (gastric inhibitory polypeptide receptor) SB - IM MH - Alzheimer Disease/drug therapy/physiopathology MH - Amyloid beta-Protein Precursor/metabolism MH - Animals MH - Disease Models, Animal MH - Glucagon/pharmacology MH - Glucagon-Like Peptide 1/pharmacology MH - Glucagon-Like Peptide-1 Receptor/*agonists/metabolism MH - Hippocampus/metabolism MH - Memory Disorders/drug therapy MH - Mice MH - Mice, Transgenic MH - Neuroprotective Agents/*metabolism/pharmacology MH - Plaque, Amyloid/drug therapy MH - Presenilin-1/metabolism MH - Receptors, Gastrointestinal Hormone/*agonists/metabolism MH - Receptors, Glucagon/*agonists/metabolism OTO - NOTNLM OT - BDNF OT - Brain OT - Growth factor OT - Inflammation OT - Insulin OT - Neurodegeneration EDAT- 2017/10/21 06:00 MHDA- 2018/03/03 06:00 CRDT- 2017/10/21 06:00 PHST- 2017/07/05 00:00 [received] PHST- 2017/10/07 00:00 [revised] PHST- 2017/10/11 00:00 [accepted] PHST- 2017/10/21 06:00 [pubmed] PHST- 2018/03/03 06:00 [medline] PHST- 2017/10/21 06:00 [entrez] AID - S0006-8993(17)30459-6 [pii] AID - 10.1016/j.brainres.2017.10.012 [doi] PST - ppublish SO - Brain Res. 2018 Jan 1;1678:64-74. doi: 10.1016/j.brainres.2017.10.012. Epub 2017 Oct 16.