PMID- 14575905 OWN - NLM STAT- MEDLINE DCOM- 20040122 LR - 20190614 IS - 0006-8993 (Print) IS - 0006-8993 (Linking) VI - 991 IP - 1-2 DP - 2003 Nov 21 TI - In vivo insular cortex LTP induced by brain-derived neurotrophic factor. PG - 274-9 AB - Recent studies suggest that brain-derived neurotrophic factor (BDNF) plays a critical role in long-term synaptic plasticity in the adult brain. Previous studies on the insular cortex (IC), a region of the temporal cortex implicated in the acquisition and storage of different aversive learning tasks, have demonstrated that tetanic stimulation of the basolateral nucleus of the amygdala (Bla) induces an N-methyl-D-aspartate (NMDA)-dependent form of long-term potentiation (LTP) in the IC of adult rats in vivo. Here, we show that acute intracortical microinfusion of BDNF induces a lasting potentiation of synaptic efficacy in the Bla-IC projection of anesthetized adult rats. This constitutes an in vivo demonstration of neurotrophin-induced potentiation of synaptic transmission in the neocortex. These findings support the concept that BDNF could be a synaptic messenger involved in activity-dependent synaptic plasticity. FAU - Escobar, Martha L AU - Escobar ML AD - Division de Investigacion y Estudios de Posgrado, Facultad de Psicologia, Universidad Nacional Autonoma de Mexico, Cub 4 y 5, 1er Piso, Edif. D, C P 04510 Mexico D.F., Mexico. mescobar@correo.unam.mx FAU - Figueroa-Guzman, Yazmin AU - Figueroa-Guzman Y FAU - Gomez-Palacio-Schjetnan, Andrea AU - Gomez-Palacio-Schjetnan A LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - Netherlands TA - Brain Res JT - Brain research JID - 0045503 RN - 0 (Brain-Derived Neurotrophic Factor) SB - IM MH - Animals MH - Brain-Derived Neurotrophic Factor/administration & dosage/*pharmacology MH - Excitatory Postsynaptic Potentials/drug effects/physiology MH - Injections, Intraventricular MH - Long-Term Potentiation/drug effects/physiology MH - Male MH - Neuronal Plasticity/drug effects/*physiology MH - Rats MH - Rats, Wistar MH - Synaptic Transmission/*drug effects/physiology MH - Temporal Lobe/*drug effects/physiology EDAT- 2003/10/25 05:00 MHDA- 2004/01/24 05:00 CRDT- 2003/10/25 05:00 PHST- 2003/10/25 05:00 [pubmed] PHST- 2004/01/24 05:00 [medline] PHST- 2003/10/25 05:00 [entrez] AID - S0006899303035595 [pii] AID - 10.1016/j.brainres.2003.08.015 [doi] PST - ppublish SO - Brain Res. 2003 Nov 21;991(1-2):274-9. doi: 10.1016/j.brainres.2003.08.015.