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Science is ideally suited to connect people from different cultures and thereby foster mutual understanding. To promote international life science collaboration, we have launched “The Science Bridge” initiative. Our current project focuses on partnership between Western and Middle Eastern neuroscience communities.
Two recent studies by Sheng and associates (Pak et al., 2001; Sala et al., 2001) provide an elegant molecular analysis of the role of a spine-specific protein, SPAR, and the synaptic proteins Shank and Homer, in regulating dendritic spine morphology, and the possible functional consequences of this regulation.
Dendritic spines have long been known to contain contractile elements and have recently been shown to express apparent spontaneous motility. Using high-resolution imaging of dendritic spines of green-fluorescent protein (GFP)-expressing, patch-clamped hippocampal neurons in dissociated culture, we find that bursts of action potentials, evoked by depolarizing current pulses, cause momentary contractions...
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