PMID- 26518669 OWN - NLM STAT- MEDLINE DCOM- 20161005 LR - 20201026 IS - 1878-3627 (Electronic) IS - 0922-6028 (Linking) VI - 34 IP - 1 DP - 2016 TI - Delayed restraint procedure enhances cognitive recovery of spatial function after fimbria-fornix transection. PG - 1-17 LID - 10.3233/RNN-140396 [doi] AB - PURPOSE: To i) evaluate the effect of a restraint procedure (7 days, 2 h/day) on place learning after fimbria-fornix transection (FF), ii) investigate effects of early vs. late administration of restraint, and iii) establish effects of the restraint procedure on expression of brain derived neurotrophic factor (BDNF) in prefrontal cortex and hippocampus. METHODS: Fifty rats subjected to FF or sham surgery and divided into groups exposed to restraint immediately (early restraint) or 21 days (late restraint) after surgery were trained to acquire an allocentric place learning task. In parallel, 29 animals were subjected to FF or sham surgery and an identical restraint procedure in order to measure concentrations of BDNF and corticosterone. RESULTS: The performance of the sham operated rats was positively affected by the late restraint. In FF-lesioned animals, the late restraint significantly improved task performance compared to the lesioned group with no restraint, while the early restraint was associated with a negative impact on task acquisition. Biochemical analysis after restraint procedure revealed a lesion-induced upregulation of BDNF in FF animals. CONCLUSIONS: The improved task performance of lesioned animals suggests a therapeutic effect of this manipulation, independent of BDNF. This effect is sensitive to the temporal administration of treatment. FAU - Gram, Marie Gajhede AU - Gram MG AD - The Unit for Cognitive Neuroscience, Department of Psychology, University of Copenhagen, Copenhagen, Denmark. FAU - Wogensen, Elise AU - Wogensen E AD - The Unit for Cognitive Neuroscience, Department of Psychology, University of Copenhagen, Copenhagen, Denmark. FAU - Wortwein, Gitta AU - Wortwein G AD - Laboratory of Neuropsychiatry, Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark. FAU - Mogensen, Jesper AU - Mogensen J AD - The Unit for Cognitive Neuroscience, Department of Psychology, University of Copenhagen, Copenhagen, Denmark. FAU - Mala, Hana AU - Mala H AD - The Unit for Cognitive Neuroscience, Department of Psychology, University of Copenhagen, Copenhagen, Denmark. LA - eng PT - Journal Article PL - Netherlands TA - Restor Neurol Neurosci JT - Restorative neurology and neuroscience JID - 9005499 RN - 0 (Brain-Derived Neurotrophic Factor) SB - IM MH - Animals MH - Body Weight MH - Brain Diseases/metabolism/therapy MH - Brain-Derived Neurotrophic Factor/*metabolism MH - Cognition/physiology MH - Disease Models, Animal MH - Fornix, Brain/*physiopathology/surgery MH - Male MH - Maze Learning/*physiology MH - Neurosurgical Procedures MH - Prefrontal Cortex/*metabolism MH - Random Allocation MH - Rats, Wistar MH - Restraint, Physical/*methods MH - Treatment Outcome OTO - NOTNLM OT - Brain injury OT - functional recovery OT - rat OT - restraint procedure OT - time EDAT- 2015/11/01 06:00 MHDA- 2016/10/07 06:00 CRDT- 2015/11/01 06:00 PHST- 2015/11/01 06:00 [entrez] PHST- 2015/11/01 06:00 [pubmed] PHST- 2016/10/07 06:00 [medline] AID - RNN140396 [pii] AID - 10.3233/RNN-140396 [doi] PST - ppublish SO - Restor Neurol Neurosci. 2016;34(1):1-17. doi: 10.3233/RNN-140396.