Abstract
In this work, responses of rat Purkinje cells to intraperitoneal administration of the hallucinogenic alkaloid harmaline (0.15 mg/kg) were studied in the course of ontogenesis. The experiments were carried out on Wistar rats of three age groups: rat pups (13–18 days), adult animals (2–7 months), and aged rats (25–36 months). In Purkinje cell firings, two types of electric reactions were revealed; they were similar in all age group of the animals. In cells with the 1st type of reactions, in response to the harmaline administration there was recorded a significant increase of frequency of complex spikes, accompanied by disappearance of simple spikes. In the activity of Purkinje cells of the 2nd type, the complex spike frequency also increased; however, the firing simple spikes were preserved, although with a decrease of their frequency as compared with norm. Essential changes of activity of the cerebellar Purkinje cells were found in the rat pups and aged animals in comparison with adult rats, which agrees well with immaturity of various cerebellar structures in the first case and with involutionary changes in the second case.
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Original Russian Text © T. V. Karelina, 2008, published in Zhurnal Evolyutsionnoi Biokhimii i Fiziologii, 2008, Vol. 44, No. 1, pp. 78–83.
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Karelina, T.V. Effect of harmaline on firing pattern of rat cerebellar Purkinje cells in ontogenesis. J Evol Biochem Phys 44, 89–94 (2008). https://doi.org/10.1134/S0022093008010118
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DOI: https://doi.org/10.1134/S0022093008010118