ReviewBrain plasticity (Amsterdam, Netherlands)2016
Activity-Dependent Inhibitory Synaptogenesis in Cerebellar Cultures.
Review in Brain plasticity (Amsterdam, Netherlands), 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Abstract
Inhibitory synapses on Purkinje cell somata in organotypic cerebellar cultures derived from newborn mice were increased after chronic exposure post explantation to agents that enhance neuronal activity. Inhibitory synaptogenesis was reduced in similar cultures after continuous blockade of spontaneous neuronal discharges. By contrast, excitatory synapses developed fully in the absence of neuronal activity. The reduction of inhibitory synaptogenesis was prevented by the simultaneous application of activity blocking agents and neurotrophins BDNF or NT-4, which are TrkB receptor ligands, but not with NT-3, a TrkC receptor ligand. The effect of endogenous neurotrophins was evaluated by continuously exposing cerebellar cultures to antibodies to BDNF and NT-4, which caused a significant reduction in the development of inhibitory Purkinje cell axosomatic synapses. These combined results indicated a role for TrkB receptors in activity-dependent inhibitory synaptogenesis. This concept was supported by the promotion of inhibitory synaptogenesis by specific antibody activation of TrkB receptors.
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