[Chronobiological nature of brain cognitive disturbances].
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Animals↗
Biomedical subjects
E B Arushanian
Publications and source records attributed to E B Arushanian.
[Swimming stress-induced histochemical and morphological changes in various regions of the rat hippocampus].
In rats, swimming stress enhanced functional activity of the hippocampus' pyramidal neurones as manifested by diminishing of the glycogen contents, increasing amount of nucleic acids, augmented nucleus/cytoplasm ratio.
Animals↗
[Brain rhythm-organizing structures and pharmacological effect].
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Animals↗
[The role of the hypothalamic suprachiasmatic nuclei in changing the sensitivity of animals to stress].
Destruction of the circadian pacemaker: suprachiasmatic nuclei of the hypothalamus, enhances the anxiety, sympathetic tone, and induced a reorganising of the time course of forced swimming. In rats under acute stress, these shifts were more obvious. Primary disorganisation of rhythmical processes seems to augment animals' sensitivity to stress.
Animals↗
[Circadian fluctuations of the plasma corticosterone level and locomotion in rats subjected local hippocampectomy].
After bilateral lesion of dorsal hippocampus increase of the level of corticosterone and motility in night and decrease in daytime were observed.
Animals↗
[Putative contribution of the epiphyseal-adrenocortical system in the antidepressive effect of imipramine].
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Adrenal Cortex↗
[Circadian fluctuations in the variability of the heart rhythm in rats with damage to the suprachiasmatic nuclei of the hypothalamus].
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Animals↗
[The effect of the blinding of rats on the dynamics of short-period rhythmic processes with removal of the epiphysis].
Epiphysisectomy was shown to increase depression in swimming rats, whereas epiphysisectomy combined with blending decreased it. Epiphysisectomy alone affected the minute rhythms of haloperidol catalepsy while the combined action was less obvious.
Animals↗
[The role of relationship between the epiphysis and the sympathetico-adrenal system in the depressogenic effect of reserpine].
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Adrenal Medulla↗
[Circadian fluctuations in the temporal organization of forced swimming in rats].
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Animals↗
[Depression, antidepressants and the biological clock].
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Antidepressive Agents↗
[The effect of epiphysectomy on the circadian dynamics of the cardiointervalogram indices of rats].
Daily variations the heart rate variability were observed. Pinealectomy increased the sympathetic tone and shifted its acrophase to earlier hours in rats.
Adaptation, Physiological↗
[The effect of striatal damage on cardiointervalogram dynamics and its circadian fluctuations in rats].
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Adaptation, Physiological↗
[The effect of damage to the hypothalamic suprachiasmatic nuclei in rats on the dynamic short-period fluctuations of their normal and abnormal behaviors].
Electrolytic lesion of the hypothalamic suprachiasmatic nuclei (SCN) increased the swimming activity, shortens the immobility time and decreases the depression rhythmic index in rats. These changes seem to be due to a disorganizing of functional interrelationships among the SCN, pineal gland and striatum.
Amphetamine↗
[A chronobiological approach to assessing the role of the striatum in the origin of mental depression].
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Animals↗
[Circadian fluctuations in the indices of the cardiac intervalogram and their relation to the characteristics of circadian mobility in rats].
Mathematical analysis of the heart rate variability enables one to determine the activity of the sympathetic nervous system at different time of day in rats. A correlation was found between the cardiac intervalogram parameters and the dynamics of rats' circadian motility. Intensification of locomotor activity by day was accompanied by an increase in the sympathetic tone.
Animals↗
[Characteristics of circadian variations in the cardiointervalogram of patients with ischemic heart disease].
The analysis of heart rate in patients with ischemic heart disease revealed its differences in different periods of a day. In severe disease forms, the daily fluctuation range of some cardiointervalogram parameters is higher and their acrophase is shifted to the night and early morning hours.
Angina Pectoris↗
[The characteristics of the effect of anaprilin on the indices of the rat cardiac intervalogram at different phases of the circadian cycle].
At night a more effective attenuation of sympathetic activity by acute and chronic propranolol was observed. Single use of the drug in other daytime was accompanied by irregular changes in the neuronal control of heart activities. This irregularity was intensified after repeated treatment of beta-adrenoblocker and led to the stable increase of the sympathetic tone in the morning and day hours.
Analysis of Variance↗