PMID- 25061593 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20140725 LR - 20211021 IS - 2288-176X (Print) IS - 2288-1778 (Electronic) IS - 2288-176X (Linking) VI - 10 IP - 3 DP - 2014 Jun TI - Influence of mild traumatic brain injury during pediatric stage on short-term memory and hippocampal apoptosis in adult rats. PG - 148-54 LID - 10.12965/jer.140109 [doi] AB - Traumatic brain injury (TBI) is a leading cause of neurological deficit in the brain, which induces short- and long-term brain damage, cognitive impairment with/without structural alteration, motor deficits, emotional problems, and death both in children and adults. In the present study, we evaluated whether mild TBI in childhood causes persisting memory impairment until adulthood. Moreover, we investigated the influence of mild TBI on memory impairment in relation with hippocampal apoptosis. For this, step-down avoidance task, terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) assay, and immunohistochemistry for caspase-3 were performed. Male Sprague-Dawley rats were used in the experiments. The animals were randomly divided into two groups: sham-operation group and TBI-induction group. The mild TBI model was created with an electromagnetic contusion device activated at a velocity of 3.0 m/sec. The results showed that mild TBI during the pediatric stage significantly decreased memory retention. The numbers of TUNEL-positive and caspase-3-positive cells were increased in the TBI-induction group compared to those in the sham-operation group. Defective memory retention and apoptosis sustained up to the adult stage. The present results shows that mild TBI induces long-lasting cognitive impairment from pediatric to adult stages in rats through the high level of apoptosis. The finding of this study suggests that children with mild TBI may need intensive treatments for the reduction of long-lasting cognitive impairment by secondary neuronal damage. FAU - Park, Mi-Sook AU - Park MS AD - Department of Health and Welfare for the Elderly, Graduate School, Daegu Haany University, Gyeongsan, Korea. FAU - Oh, Hyean-Ae AU - Oh HA AD - Department of Health and Welfare for the Elderly, Graduate School, Daegu Haany University, Gyeongsan, Korea. FAU - Ko, Il-Gyu AU - Ko IG AD - Department of Physiology, College of Medicine, Kyung Hee University, Seoul, Korea. FAU - Kim, Sung-Eun AU - Kim SE AD - Department of Physiology, College of Medicine, Kyung Hee University, Seoul, Korea. FAU - Kim, Sang-Hoon AU - Kim SH 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 - Kim, Hyun-Bae AU - Kim HB AD - Department of Taekwondo, College of Physical Education, Kyung Hee University, Suwon, Korea. FAU - Kim, Hong AU - Kim H AD - Department of Oriental Sports Medicine, College of Biomedical Science, Daegu Haany University, Gyeongsan, Korea. LA - eng PT - Journal Article DEP - 20140630 PL - Korea (South) TA - J Exerc Rehabil JT - Journal of exercise rehabilitation JID - 101615171 PMC - PMC4106768 OTO - NOTNLM OT - Apoptosis OT - Hippocampus OT - Pediatric stage OT - Short-term memory OT - Traumatic brain injury EDAT- 2014/07/26 06:00 MHDA- 2014/07/26 06:01 PMCR- 2014/06/30 CRDT- 2014/07/26 06:00 PHST- 2014/06/04 00:00 [received] PHST- 2014/06/19 00:00 [accepted] PHST- 2014/07/26 06:00 [entrez] PHST- 2014/07/26 06:00 [pubmed] PHST- 2014/07/26 06:01 [medline] PHST- 2014/06/30 00:00 [pmc-release] AID - jer-10-3-148 [pii] AID - 10.12965/jer.140109 [doi] PST - epublish SO - J Exerc Rehabil. 2014 Jun 30;10(3):148-54. doi: 10.12965/jer.140109. eCollection 2014 Jun.