Variations in the content of some trace elements and macroelements in the hippocampus of rats during learning and memory retrieval after destruction of the entorhinal cortex.

We studied variations in the concentration of Na, K, Ca, and Mg in the hippocampus of rats with damaged entorhinal cortex. The concentration of Mg, Na, K, and Ca remained practically unchanged, while the content of Zn and Cu increased during learning and memory retrieval in animals with damaged entorhinal cortex. Our results indicate that Zn and Cu, constituents of metalloproteins and metalloenzymes, play an important role in hippocampal function.

[Morpho-functional characteristics of septum pellucidum cells in a tissue culture in newborn rats].

In the conditions of cultivation of the transparent septum cells of newborn rat all cell types, inherent in this structure in vivo, are preserved and differentiate. The bioelectric activity is expressed in generating continuous pulse activity from the 9th day of cultivation on, thus suggesting the organotypic culture maturation.

[Morphofunctional characteristics of spinal cord neurons in the early stages of cultivation].

A study of the ultrastructural peculiarities of the spinal cord neural cells in 14 day old chick embryos at the early stages of cultivation has shown that adaptation processes are completed within the first days of explant cultivation. Further cultivation leads to the differentiation of neurons and to the recovery of their capacity of bioelectrical activity.