Experience-dependent pruning of dendritic spines in visual cortex by tissue plasminogen activator. Export

@article{citeulike:782507, abstract = {Sensory experience physically rewires the brain in early postnatal life through unknown processes. Here, we identify a robust anatomical consequence of monocular deprivation (MD) in layer II/III of visual cortex that corresponds to the rapid, functional loss of responsiveness preceding any changes in axonal input. Protrusions on pyramidal cell apical dendrites increased steadily after eye opening, but were transiently lost through competitive mechanisms after brief MD only during the physiological critical period. Proteolysis by tissue-type plasminogen activator (tPA) conversely declined with age and increased with MD only in young mice. Targeted disruption of tPA release or its upstream regulation by glutamic acid decarboxylase (GAD65) prevented MD-induced spine loss that was pharmacologically rescued concomitant with critical period plasticity. An extracellular mechanism for structural remodeling that is limited to the binocular zone upon proper detection of competing inputs thus links early sensory experience to visual function.}, address = {Laboratory for Neuronal Circuit Development, Institute of Physical and Chemical Research (RIKEN), Brain Science Institute, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan.}, author = {Mataga, N. and Mizuguchi, Y. and Hensch, T. K.}, citeulike-article-id = {782507}, citeulike-linkout-0 = {http://dx.doi.org/10.1016/j.neuron.2004.11.028}, citeulike-linkout-1 = {http://view.ncbi.nlm.nih.gov/pubmed/15603745}, citeulike-linkout-2 = {http://www.hubmed.org/display.cgi?uids=15603745}, day = {16}, doi = {10.1016/j.neuron.2004.11.028}, issn = {0896-6273}, journal = {Neuron}, keywords = {activator, cortex, deprivation, monocular, neuroscience, plasminogen, spine, tissue, visual}, month = {December}, number = {6}, pages = {1031--1041}, posted-at = {2006-08-02 08:12:37}, priority = {3}, title = {Experience-dependent pruning of dendritic spines in visual cortex by tissue plasminogen activator.}, url = {http://dx.doi.org/10.1016/j.neuron.2004.11.028}, volume = {44}, year = {2004} }

TY - JOUR ID - citeulike:782507 L3 - citeulike-article-id:782507 N2 - Sensory experience physically rewires the brain in early postnatal life through unknown processes. Here, we identify a robust anatomical consequence of monocular deprivation (MD) in layer II/III of visual cortex that corresponds to the rapid, functional loss of responsiveness preceding any changes in axonal input. Protrusions on pyramidal cell apical dendrites increased steadily after eye opening, but were transiently lost through competitive mechanisms after brief MD only during the physiological critical period. Proteolysis by tissue-type plasminogen activator (tPA) conversely declined with age and increased with MD only in young mice. Targeted disruption of tPA release or its upstream regulation by glutamic acid decarboxylase (GAD65) prevented MD-induced spine loss that was pharmacologically rescued concomitant with critical period plasticity. An extracellular mechanism for structural remodeling that is limited to the binocular zone upon proper detection of competing inputs thus links early sensory experience to visual function. IS - 6 JF - Neuron SN - 0896-6273 AD - Laboratory for Neuronal Circuit Development, Institute of Physical and Chemical Research (RIKEN), Brain Science Institute, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan. EP - 1041 TI - Experience-dependent pruning of dendritic spines in visual cortex by tissue plasminogen activator. VL - 44 SP - 1031 KW - activator KW - cortex KW - deprivation KW - monocular KW - neuroscience KW - plasminogen KW - spine KW - tissue KW - visual AU - Mataga, N AU - Mizuguchi, Y AU - Hensch, TK PY - 2004/12/16/ UR - http://dx.doi.org/10.1016/j.neuron.2004.11.028 ER -