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The ageing rat hippocampus undergoes ultrastructural changes, including the loss of axosomatic synapses of the granule cells. These synapses are supposed to take part in a feed-back regulation of granule cell activity, as they are inhibitory terminals of interneurons which receive afferences from the granules themselves via the giant synapses formed by the(More)
The effect of methylazoxymethanol (MAM), administered on the 15th gestational day, on the density and pattern of muscarinic cholinergic receptors in some brain areas was assessed using combined radioreceptor binding and autoradiographic techniques. The effect of 15 days' treatment with acetyl-L-carnitine on the same parameter was also assessed. The density(More)
The effect of methylazoxymethanol (MAM) administration at the 15th gestational day on some behavioural and morpho-functional parameters of rat brain was investigated. The effect of a 13-15-day treatment of acetyl-L-carnitine on the same parameters was also assessed. MAM microencephalic rats showed a significant impairment in water-maze and pole-climbing(More)
The aim of the study was to evaluate the effects of acetyl-L-carnitine on learning and/or memory processes in laboratory animals. In the water maze test, acetyl-L-carnitine, given intraperitoneally at doses ranging from 0.3 to 100 mg/kg, improved performances in both mice and rats. In the latter the drug also proved active when administered orally in the(More)
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