PMID- 24678498 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20140328 LR - 20220316 IS - 2288-176X (Print) IS - 2288-1778 (Electronic) IS - 2288-176X (Linking) VI - 10 IP - 1 DP - 2014 Feb TI - Treadmill exercise improves short-term memory by enhancing neurogenesis in amyloid beta-induced Alzheimer disease rats. PG - 2-8 LID - 10.12965/jer.140086 [doi] AB - Alzheimer's disease is one of the most devastating neurodegenerative disorders, and this disease is characterized by severe memory impairment and decline of cognition. Hippocampal neurons are vulnerable to injury induced by Alzheimer's disease. Physical exercise is known to promote cell survival and functional recovery after brain injuries. In the present study, we investigated the effects of treadmill exercise on short-term memory in relation with neurogenesis in the rats with amyloid beta25-35 (Abeta25-35)-induced Alzheimer's disease. The rat model of Alzheimer's disease was induced by the intracerebroventricular (ICV) injection of Abeta25-35, using a stereotaxic instrument. The rats in the exercise group were forced to run on a treadmill for 30 min once daily for 4 consecutive weeks, starting 2 days after Abeta25-35 injection. Presently, short-term memory was deteriorated and apical dendritic length in the hippocampus was shortened in the hippocampus by Abeta25-35 injection. In contrast, treadmill exercise alleviated memory impairment and increased apical dendritic length in the Abeta25-35-injected rats. Neurogenesis and brain-derived neurotorphic factor (BDNF) and tyrosine kinase B (trkB) in the hippocampal dentate gyrus were decreased by Abeta25-35 injection. Treadmill exercise increased neurogenesis and expressions of BDNF and trkB expressions. The present study shows that treadmill exercise may provide therapeutic value for the alleviating symptoms of Alzheimer's disease. FAU - Kim, Bo-Kyun AU - Kim BK AD - Department of Physiology, College of Medicine, Kyung Hee University, Seoul, Korea. FAU - Shin, Mal-Soon AU - Shin MS AD - Department of Physiology, College of Medicine, Kyung Hee University, Seoul, Korea. FAU - Kim, Chang-Ju AU - Kim CJ AD - Department of Physiology, College of Medicine, Kyung Hee University, Seoul, Korea. FAU - Baek, Sang-Bin AU - Baek SB AD - Department of Psychiatry, Gangneung Asan Hospital, Ulsan University, Gangneung, Korea. FAU - Ko, Yeong-Chan AU - Ko YC AD - Faculty of Exercise & Sports Science, Jeju National University, Jeju, Korea. FAU - Kim, Young-Pyo AU - Kim YP AD - Faculty of Exercise & Sports Science, Jeju National University, Jeju, Korea. LA - eng PT - Journal Article DEP - 20140228 PL - Korea (South) TA - J Exerc Rehabil JT - Journal of exercise rehabilitation JID - 101615171 PMC - PMC3952831 OTO - NOTNLM OT - Alzheimer's disease OT - Apical dendritic length OT - Neurogenesis OT - Short-term memory OT - Treadmill exercise EDAT- 2014/03/29 06:00 MHDA- 2014/03/29 06:01 PMCR- 2014/02/28 CRDT- 2014/03/29 06:00 PHST- 2014/01/15 00:00 [received] PHST- 2014/01/28 00:00 [revised] PHST- 2014/02/06 00:00 [accepted] PHST- 2014/03/29 06:00 [entrez] PHST- 2014/03/29 06:00 [pubmed] PHST- 2014/03/29 06:01 [medline] PHST- 2014/02/28 00:00 [pmc-release] AID - jer-10-1-2-2 [pii] AID - 10.12965/jer.140086 [doi] PST - epublish SO - J Exerc Rehabil. 2014 Feb 28;10(1):2-8. doi: 10.12965/jer.140086. eCollection 2014 Feb.