PMID- 25849905 OWN - NLM STAT- MEDLINE DCOM- 20160331 LR - 20220321 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 10 IP - 4 DP - 2015 TI - Brain-derived neurotrophic factor ameliorates learning deficits in a rat model of Alzheimer's disease induced by abeta1-42. PG - e0122415 LID - 10.1371/journal.pone.0122415 [doi] LID - e0122415 AB - An emerging body of data suggests that the early onset of Alzheimer's disease (AD) is associated with decreased brain-derived neurotrophic factor (BDNF). Because BDNF plays a critical role in the regulation of high-frequency synaptic transmission and long-term potentiation in the hippocampus, the up-regulation of BDNF may rescue cognitive impairments and learning deficits in AD. In the present study, we investigated the effects of hippocampal BDNF in a rat model of AD produced by a ventricle injection of amyloid-beta1-42 (Abeta1-42). We found that a ventricle injection of Abeta1-42 caused learning deficits in rats subjected to the Morris water maze and decreased BDNF expression in the hippocampus. Chronic intra-hippocampal BDNF administration rescued learning deficits in the water maze, whereas infusions of NGF and NT-3 did not influence the behavioral performance of rats injected with Abeta1-42. Furthermore, the BDNF-related improvement in learning was ERK-dependent because the inhibition of ERK, but not JNK or p38, blocked the effects of BDNF on cognitive improvement in rats injected with Abeta1-42. Together, our data suggest that the up-regulation of BDNF in the hippocampus via activation of the ERK signaling pathway can ameliorate Abeta1-42-induced learning deficits, thus identifying a novel pathway through which BDNF protects against AD-related cognitive impairments. The results of this research may shed light on a feasible therapeutic approach to control the progression of AD. FAU - Zhang, Lu AU - Zhang L AD - Key-Disciplines Laboratory Clinical-Medicine of Henan, Zhengzhou, Henan, China; Department of Neurology, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China. FAU - Fang, Yu AU - Fang Y AD - Key-Disciplines Laboratory Clinical-Medicine of Henan, Zhengzhou, Henan, China; Department of Intensive Care Unit, First Affiliated Hospital, Zhengzhou University Zhengzhou, Henan, China. FAU - Lian, Yajun AU - Lian Y AD - Department of Neurology, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China. FAU - Chen, Yuan AU - Chen Y AD - Department of Neurology, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China. FAU - Wu, Tianwen AU - Wu T AD - Department of Neurology, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China. FAU - Zheng, Yake AU - Zheng Y AD - Department of Neurology, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China. FAU - Zong, Huili AU - Zong H AD - Department of Intensive Care Unit, First Affiliated Hospital, Zhengzhou University Zhengzhou, Henan, China. FAU - Sun, Limin AU - Sun L AD - Department of Intensive Care Unit, First Affiliated Hospital, Zhengzhou University Zhengzhou, Henan, China. FAU - Zhang, Ruifang AU - Zhang R AD - Department of Intensive Care Unit, First Affiliated Hospital, Zhengzhou University Zhengzhou, Henan, China. FAU - Wang, Zhenhua AU - Wang Z AD - Department of Intensive Care Unit, First Affiliated Hospital, Zhengzhou University Zhengzhou, Henan, China. FAU - Xu, Yuming AU - Xu Y AD - Key-Disciplines Laboratory Clinical-Medicine of Henan, Zhengzhou, Henan, China; Department of Neurology, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150407 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (Amyloid beta-Peptides) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Peptide Fragments) RN - 0 (amyloid beta-protein (1-42)) RN - 7171WSG8A2 (BDNF protein, human) RN - EC 2.7.11.24 (Extracellular Signal-Regulated MAP Kinases) SB - IM MH - Alzheimer Disease/chemically induced/*drug therapy/enzymology/*physiopathology MH - Amyloid beta-Peptides/*toxicity MH - Animals MH - Brain-Derived Neurotrophic Factor/administration & dosage/metabolism/*pharmacology/therapeutic use MH - Cognition/drug effects MH - Disease Models, Animal MH - Enzyme Activation/drug effects MH - Extracellular Signal-Regulated MAP Kinases/metabolism MH - Hippocampus/drug effects/metabolism/physiopathology MH - Humans MH - Injections MH - Learning/*drug effects MH - Male MH - Memory/drug effects MH - Peptide Fragments/*toxicity MH - Rats MH - Rats, Sprague-Dawley MH - Spatial Learning/drug effects MH - Up-Regulation/drug effects PMC - PMC4388634 COIS- Competing Interests: The authors have declared that no competing interests exist. EDAT- 2015/04/08 06:00 MHDA- 2016/04/01 06:00 PMCR- 2015/04/07 CRDT- 2015/04/08 06:00 PHST- 2014/12/04 00:00 [received] PHST- 2015/02/20 00:00 [accepted] PHST- 2015/04/08 06:00 [entrez] PHST- 2015/04/08 06:00 [pubmed] PHST- 2016/04/01 06:00 [medline] PHST- 2015/04/07 00:00 [pmc-release] AID - PONE-D-14-53121 [pii] AID - 10.1371/journal.pone.0122415 [doi] PST - epublish SO - PLoS One. 2015 Apr 7;10(4):e0122415. doi: 10.1371/journal.pone.0122415. eCollection 2015.