Synaptic effects of neurotransmitter analogue effects of neurotransmitter analogues and antileptic drugs in the brain of norma and epileptic experimental animals
Abstract
The aim of the study presented here is to contribute to the investigation of epileptogenesis. The study is divided in three parts. The first part investigates possible mechanisms of inherited epileptogenesis in the epileptic mutant mouse tottering (tg/tg) by examining the following questions: 1) The function of cholinergic system in the cerebral cortex (through determination of the activity and kinetic properties of enzyme ChAT). 2) The physiological neuronal excitability and its changes due to: a) the increase (+2mM) of extracellular Κ⁺, b) the activation of NMDA receptors and c) the application of 10μΜ Adenosine (endogenous substance with antiepileptic properties). Epileptic mice (tg/tg) and phenotypically normal controls (tg/+ or +/+) were used for all the experiments (1 and 2), which employed respectively a radiochemical method (1) and in vitro recordings of field potentials from the pyramidal cells of hippocampal area CA₁ (2). Postsynaptic excitability as expressed by the PS/fEPSP ...
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