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Purkinje Cell Impairment Induced by Early Movement Restriction

In the present work the effects of movement restriction imposed during the early postweaning period on both Purkinje cell dendritic development and exploratory behavior were analyzed. Male and female Sprague-Dawley albino rats were reared either in isolated-restricted or social-standard environments from postnatal day 18 to 30. On the 31st postnatal day, all rats were behaviorally evaluated by the open-field test and then sacrificed under deep ether anesthesia. Vermian cerebellar sections were later stained with the Golgi-Cox-Sholl method and the Purkinje cell dendritic morphology was quantified under light microscopy. The results indicate that early somatomotor restriction severely impairs both exploratory behavior and Purkinje cell dendritic growth.