PMID- 11036271 OWN - NLM STAT- MEDLINE DCOM- 20001211 LR - 20091119 IS - 1097-6256 (Print) IS - 1097-6256 (Linking) VI - 3 IP - 11 DP - 2000 Nov TI - BDNF upregulation during declarative memory formation in monkey inferior temporal cortex. PG - 1134-42 AB - In primates, visual long-term memory of objects is presumably stored in the inferior temporal (IT) cortex. Because brain-derived neurotrophic factor (BDNF) is involved in activity-dependent neural reorganization, we tested the hypothesis that BDNF would be upregulated in IT cortex during formation of visual pair-association memory. To eliminate genetic and cognitive variations between individual animals, we used split-brain monkeys for intra-animal comparison in PCR-based mRNA quantitation. The monkeys learned a pair-association (PA) task using one hemisphere and a control visual task using the other, to balance the amount of visual input. We found that BDNF was upregulated selectively in area 36 of IT cortex during PA learning, but not in areas involved in earlier stages of visual processing. In situ hybridization showed that BDNF-expressing cells were localized in a patchlike cluster. The results suggest that BDNF contributes to reorganization of neural circuits for visual long-term memory formation in the primate. FAU - Tokuyama, W AU - Tokuyama W AD - Department of Physiology, University of Tokyo School of Medicine, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan. FAU - Okuno, H AU - Okuno H FAU - Hashimoto, T AU - Hashimoto T FAU - Xin Li, Y AU - Xin Li Y FAU - Miyashita, Y AU - Miyashita Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Nat Neurosci JT - Nature neuroscience JID - 9809671 RN - 0 (Actins) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (RNA, Messenger) RN - EC 2.7.10.1 (Receptor, trkB) SB - IM MH - Actins/metabolism MH - Animals MH - Brain-Derived Neurotrophic Factor/*metabolism MH - Corpus Callosum/surgery MH - Functional Laterality/physiology MH - Macaca MH - Male MH - Memory/*physiology MH - Occipital Lobe/metabolism MH - Pattern Recognition, Visual/*physiology MH - RNA, Messenger/metabolism MH - Receptor, trkB/metabolism MH - Temporal Lobe/*metabolism MH - Up-Regulation MH - Visual Fields/*physiology EDAT- 2000/10/19 11:00 MHDA- 2001/02/28 10:01 CRDT- 2000/10/19 11:00 PHST- 2000/10/19 11:00 [pubmed] PHST- 2001/02/28 10:01 [medline] PHST- 2000/10/19 11:00 [entrez] AID - 10.1038/80655 [doi] PST - ppublish SO - Nat Neurosci. 2000 Nov;3(11):1134-42. doi: 10.1038/80655.