PMID- 11592854 OWN - NLM STAT- MEDLINE DCOM- 20020123 LR - 20131121 IS - 0969-9961 (Print) IS - 0969-9961 (Linking) VI - 8 IP - 5 DP - 2001 Oct TI - Potential role of endogenous brain-derived neurotrophic factor in long-term neuronal reorganization of the superior colliculus after bilateral visual deprivation. PG - 866-80 AB - The role of the brain-derived neurotrophic factor (BDNF), the BDNF receptor (TrkB), and the glutamic acid decarboxylase (GAD67) after neonatal, bilateral nerve deafferentiation during postnatal development was investigated in the rat superior colliculus (SC). BDNF and GAD67 mRNA expression were significantly increased in optic (Op) and intermediate gray (InG) layers at 5, 8, 15, and 21 days after birth, but not in adult animals. However, TrkB mRNA expression was not modified at any time tested. At 15 days, where changes in BDNF and GAD67 mRNAs were more evident, an upregulation of the NMDAR(1A) mRNA glutamate receptor in the Op and InG, a modification in the pattern of synaptic zinc in the superficial layers of SC, and an increased synaptophysin immunoreactivity in the Op was found. This indicates the existence of a synergic mechanism between BDNF and NMDA to determine refinement of connections after the loss of visual input in SC. CI - Copyright 2001 Academic Press. FAU - Vizuete, M L AU - Vizuete ML AD - Departamento de Bioquimica, Bromatologia y Toxicologia, Facultad de Farmacia, Universidad de Sevilla, Sevilla, 41012, Spain. FAU - Venero, J L AU - Venero JL FAU - Vargas, C AU - Vargas C FAU - Revuelta, M AU - Revuelta M FAU - Machado, A AU - Machado A FAU - Cano, J AU - Cano J LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Neurobiol Dis JT - Neurobiology of disease JID - 9500169 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Isoenzymes) RN - 0 (NMDA receptor A1) RN - 0 (Nerve Tissue Proteins) RN - 0 (RNA, Messenger) RN - 0 (Receptors, N-Methyl-D-Aspartate) RN - 0 (Synaptophysin) RN - 6384-92-5 (N-Methylaspartate) RN - EC 2.7.10.1 (Receptor, trkB) RN - EC 4.1.1.15 (Glutamate Decarboxylase) RN - EC 4.1.1.15 (glutamate decarboxylase 1) RN - J41CSQ7QDS (Zinc) SB - IM MH - Animals MH - Animals, Newborn MH - Blindness/*physiopathology MH - Brain-Derived Neurotrophic Factor/biosynthesis/genetics/*physiology MH - Eye Enucleation MH - Glutamate Decarboxylase/biosynthesis/genetics MH - In Situ Hybridization MH - Isoenzymes/biosynthesis/genetics MH - Male MH - N-Methylaspartate/physiology MH - Nerve Tissue Proteins/analysis/biosynthesis/genetics/*physiology MH - Neuronal Plasticity/*genetics/physiology MH - RNA, Messenger/biosynthesis/genetics MH - Rats MH - Rats, Wistar MH - Receptor, trkB/biosynthesis/genetics/*physiology MH - Receptors, N-Methyl-D-Aspartate/biosynthesis/genetics/*physiology MH - Signal Transduction MH - Superior Colliculi/*metabolism MH - Synapses/metabolism/ultrastructure MH - Synaptophysin/analysis MH - Zinc/analysis EDAT- 2001/10/11 10:00 MHDA- 2002/01/24 10:01 CRDT- 2001/10/11 10:00 PHST- 2001/10/11 10:00 [pubmed] PHST- 2002/01/24 10:01 [medline] PHST- 2001/10/11 10:00 [entrez] AID - S0969-9961(01)90424-3 [pii] AID - 10.1006/nbdi.2001.0424 [doi] PST - ppublish SO - Neurobiol Dis. 2001 Oct;8(5):866-80. doi: 10.1006/nbdi.2001.0424.