M S Konstantinova

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The posterior neurohypophysis (PNH)-pars intermedia complex of the wild and pond carp, Cyprinus carpio L., has been studied by light, fluorescence and electron microscopy. "Gomori-positive" neurosecretory fibres are abundant in the main trunk of the neurohypophysis as well as its roots penetrating the pars intermedia. Terminals of these fibres are in(More)
Monoaminergic fibres exhibiting green fluorescence have been revealed by the Falck histochemical fluorescence technique in the area of the hypothalamic preoptic nuclei and nucleus lateralis tuberis of the carp. Monoaminergic cerebrospinal fluid-contacting nerve cells with an intensive greenish and yellowish fluorescence were observed in the walls of the(More)
Open-field behaviour and emotionally differently reinforced learning were studied in male Wistar rats with bilaterally ablated Locus coeruleus. Histochemical analysis of the hypothalamic structures was carried out. Decrease of investigating activity and attention was found as well as disturbances of learning with emotionally-negative (painful)(More)
The effect of pharmacological destruction of hypothalamic monoaminergic terminals on the basal and cold stress-induced secretion of neurohormones of the sympathoadrenal system (SAS) in rats was studied. The data obtained on biochemical and histochemical analysis of the hypothalamus (dopamine, noradrenaline and serotonin level, the picture of(More)
Falk's histochemical fluorescent method was used to study monoamine (MA)-containing structures in isolated hypothalamus nuclei and in the neurohemal region of the medial eminence (ME) in 40 male rats under the conditions of a long-term stress (6 months) which was caused by a repeated weak electrodermal stimulation. A statistically significant decrease in(More)
Distribution of adrenergic and peptidergic nerve fibers in rat median eminence was studied three weeks after bilateral adrenalectomy. Fluorescence intensity in the external zone and in some of the nerve cell-bodies proved to be increased in the nucleus arcuatus. There were many nerve fibers with a bright fluorescence in the internal zone. A great number of(More)
A neurotoxin 6-hydroxydopamine (6-OHDA) was introduced to 1, 2 and 3 day old male Wistar rats. Falck-Hillarp histochemical fluorescent method was used to analyze hypothalamic and hypophysial structures containing catecholamines. Statistically reliable decrease in catecholamine fluorescence intensity in hypothalamus and hypophysis, accumulation of(More)