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Biomedical subjects

A D Nozdrachev

Publications and source records attributed to A D Nozdrachev.

At least 19 recordsLinked to original sources
PubMed1995

Projections of stellate ganglion sympathetic neutrons in cats.

Retrograde axonal transport of horseradish peroxidase (HRP) was used in this study to localize neurons in the cat stellate ganglion. The enzyme was applied to different nerves originating from the ganglion. Regardless of the site of HRP application labeled neurons in the stellate ganglion were located in the zone adjacent to the emergence from the ganglion of the nerves under study. However, neurons of a thoracic part of the sympathetic trunk were never labeled following exposure to HRP. The boundaries of the ganglion areas filled with labeled neurons after HRP application to different nerves did not completely overlap. The neurons labeled following HRP application to the vertebral nerve and the anastomosis of the stellate ganglion with the vagus nerve occupied the largest area. We conclude that neurons in the stellate ganglion of the cat are organized on a topical basis.

Animals↗
PubMed1994

[The effect of the intraventricular administration of oxytocin on the functional activity of the epiphysis, adrenals and gonads and on the behavior of rats].

Intraventricular administration of oxytocin (OT) facilitated horizontal locomotion and inhibited their decrease in rats. OT also increased the number of face grooming responses but did not affect the genital grooming. The OT seems to suppress the pineal gland activity, whereas the plasma concentration of testosterone did not change and the corticosterone concentration increased. The OT seems to exert a complex effect on the nervous and endocrine systems.

Adrenal Glands↗
PubMed1994

[The regulation of the absorptive activity of the intestinal epithelium in lower vertebrates by the enteral portion of the metasympathetic nervous system].

Effects of a few pharmacological agents (ouabain, proserine, atropine) upon absorption velocity in intestinal epithelium, were studied in lower vertebrates. Mechanisms of the intestinal epithelium response to osmotic irritants and regulation of this process by the enteric portion of the metasympathetic nervous system, are discussed.

Animals↗
PubMed1994

[The comparative characteristics of the electroretinograms of vertebrates evoked by light and x-ray stimulation under different conditions of adaptation].

Existence of two electrical responses specific for the X-rays and differing from the responses to red or blue light, was confirmed in the electroretinogram of the frog eye during darkness adaptation, monochromatic illumination as well as in response to paired stimuli in different combinations of red and blue light and the X-rays. The data obtained suggest the possibility of using roentgenophosphen as a test for determining of individual radiation sensitivity in humans.

Adaptation, Physiological↗
PubMed1994

[The metasympathetic mechanisms supporting the constancy and stability of the internal environment in vertebrates].

The data were obtained with the aid of extracellular recording of unit activity in the cardial, enteral and respiratory parts of the metasympathetic nervous system, staining of the neural tissue preparations of atrial walls, intestine and lower part of the guinea pig trachea. The neurons were shown to be very sensitive to the main homeostatic contants: pH of the perfusion solution, its temperature and the grade of oxygenation. These structures were shown to take a direct part in maintenance of the constancy and stability of the organism inner milieu. Sympathetic nervous system differs from the above system in that the former is the system of transmission, defence, mobilisation of resources which is necessary for active interaction of the organism with ambient milieu.

Animals↗