Abstract
We have analyzed the developmental properties of kainate receptors in cerebellar membranes prepared from chick and rat, two vertebrate species with contrasting patterns of functional maturation. Single populations of binding sites have been characterized in the avian and rodent membranes with apparent dissociation constants (Kd) in the 210–280 nM and 40–55 nM ranges, respectively; the number of binding sites (Bmax) increases with age in both species, reaching a maximum of 187 pmol/mg in the case of 10-day chicks vs. 1.28 pmol/mg in 75-day rats. The ontogenetic profiles of kainate receptors in chick and rat cerebella are in consonance with the patent differences in motor development at birth.
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Miralles, A., Olmos, G. & Ramírez, G. Ontogeny of binding sites for [3H]kainic acid in chick and rat cerebellar membranes: A comparative study. Neurochem Res 15, 47–52 (1990). https://doi.org/10.1007/BF00969183
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DOI: https://doi.org/10.1007/BF00969183