R P Kucherenko

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Metergoline and 5, 7-dihydroxytryptamine were found to suppress and to prevent an electroanalgesic effect, resp. An increase in the serotonine contents in the CSF after electroanalgesia suggests an activation of the brain serotoninergic system. DL-5-hydroxytryptophan and allopurinol enhanced the electroanalgetic effect. The data obtained suggests an(More)
The ultrastructure of nucleus raphe dorsalis (NRD) and specific reactions of its elements were studied with a selective neurotoxin 5,7-dioxytriptamine under conditions of a primary selective injury of the serotonergic system. In this nucleus there are two groups of nervous cells reacting to the neurotoxin. The serotonergic terminal buttons are found(More)
The selective lesion of the afferent serotoninergic system by means of intracisternal administration of 5,7-dihydroxytryptamine produces certain structural rearrangements in a part of cellular elements and in various parts of the neuropil of the neocortical parietal area. The deficiency of serotoninergic innervation influences the metabolic processes. This(More)
Owing to the microscopical investigation, using selective neurotoxin 5,7-dihydroxytryptamine, it has been possible to reveal the serotoninergic system and targets of its innervation in the rat cerebral cortex motor area. The serotoninergic axonal varicosities and synaptic boutons are present in all layers of the neocortex. Their large amount is revealed in(More)
Selective neurotoxic effect of 6-hydroxydopamine on the catecholaminergic systems was used to study the structural changes in the locus coeruleus and ventral tegmental neurons. Compared with the earlier published data on the blood-brain barrier permeability, the peculiarities of the responses of a part of neurons and synapses of the sites under study(More)
Electron microscopy of rats ultrathin sections from dorsal and central raphe nucleus and spinal cord after 5,7-dihydroxytryptamine intracisternal microinjection (200 micrograms) has revealed neurones and axonal terminals distruction, which associated with tail-flick hypoalgesia and blood pressure nociceptive reactions diminished. In this condition the(More)
Electron microscopical investigation of the ventral tegmental area at various time after administration of a specific neurotoxin 6-hydroxydopamine made it possible not only to reveal catecholamine reactive elements, but also those structural reorganizations in them, that are dependent on the lesion of the catecholaminergic systems, including certain changes(More)
Under the effect of electromagnetic radiation not any specific changes are revealed in the neural system unequivocally characterizing disturbances in its structure as a result of an excess absorption of electromagnetic energy. The ultrastructural changes revealed in the lateral fields of the cat hypothalamus are suitable for a well known scheme(More)
Using light and electron microscopic examinations, the authors studied various portions of the rat brain following intracysternal administration of 6-hydroxydopamine. The lowered levels of noradrenaline in the cerebral tissue and an altered ultrastructure of neurons of the catecholaminergic centres and their processes were discovered in various areas of the(More)