PMID- 10704490 OWN - NLM STAT- MEDLINE DCOM- 20000403 LR - 20191023 IS - 1529-2401 (Electronic) IS - 0270-6474 (Print) IS - 0270-6474 (Linking) VI - 20 IP - 6 DP - 2000 Mar 15 TI - Effects of neurotrophins on cortical plasticity: same or different? PG - 2155-65 AB - Neurotrophins are important regulators of visual cortical plasticity. It is still unclear, however, whether they play similar or different roles and which are their effects on the electrical activity of cortical neurons in vivo. We therefore compared the effects of all neurotrophins, nerve growth factor (NGF), brain-derived neurotrophic factor (BDNF), neurotrophin-4 (NT-4), and neurotrophin-3 (NT-3) on visual cortical plasticity and on cell spontaneous and visually evoked activity. Rats were monocularly deprived for 1 week at the peak of the critical period, and neurotrophins were infused intracortically. The main finding is that, with the exception of NT-3, all neurotrophins affect the outcome of monocular deprivation, but there are clear differences in their mechanisms of action. In particular, NT-4 and NGF counteract monocular deprivation effects without causing detectable alterations either in spontaneous or visually evoked neuronal activity. BDNF is less effective on ocular dominance plasticity and, in addition, strongly affects spontaneous and visually evoked activity in cortical neurons. FAU - Lodovichi, C AU - Lodovichi C AD - Scuola di Studi Superiori Sant'Anna, 56126 Pisa, Italy. lodovica@in.pi.cnr.it FAU - Berardi, N AU - Berardi N FAU - Pizzorusso, T AU - Pizzorusso T FAU - Maffei, L AU - Maffei L LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Neurosci JT - The Journal of neuroscience : the official journal of the Society for Neuroscience JID - 8102140 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Nerve Growth Factors) RN - 0 (Neuroprotective Agents) RN - 0 (Neurotrophin 3) RN - 9061-61-4 (Nerve Growth Factor) RN - P658DCA9XD (neurotrophin 4) SB - IM MH - Animals MH - Brain-Derived Neurotrophic Factor/pharmacology MH - Electric Conductivity MH - Evoked Potentials, Visual/drug effects/physiology MH - Form Perception/drug effects/physiology MH - Nerve Growth Factor/pharmacology MH - Nerve Growth Factors/*pharmacology MH - Neuronal Plasticity/*drug effects MH - Neurons/drug effects/physiology MH - Neuroprotective Agents/pharmacology MH - Neurotrophin 3/pharmacology MH - Rats MH - Rats, Long-Evans MH - Synaptic Transmission/drug effects MH - Vision, Monocular MH - Visual Cortex/*cytology/*drug effects MH - Visual Fields/drug effects/physiology MH - Visual Pathways PMC - PMC6772512 EDAT- 2000/03/08 00:00 MHDA- 2000/03/08 00:01 PMCR- 2000/09/15 CRDT- 2000/03/08 00:00 PHST- 2000/03/08 00:00 [pubmed] PHST- 2000/03/08 00:01 [medline] PHST- 2000/03/08 00:00 [entrez] PHST- 2000/09/15 00:00 [pmc-release] AID - 4001 [pii] AID - 10.1523/JNEUROSCI.20-06-02155.2000 [doi] PST - ppublish SO - J Neurosci. 2000 Mar 15;20(6):2155-65. doi: 10.1523/JNEUROSCI.20-06-02155.2000.