Morphofunctional state of adrenal glands under the prolonged exposure of the red mud

G. G. Boretskyi, I. M. Rozhkov

Abstract


Introduction. By means of modern techniques, new data, regarding the character and dynamics of structural changes in adrenal cortical cells under condition of prolonged organism exposure of the red mud, has been obtained.

Purpose. To evaluate the dynamics of the structural changes and the direction of reparative processes in adrenal cortical cells of animals of all ages under organism exposure of the red mud.

Methods. In the adrenal glands of control and experimental animals was measured the thickness of the capsule, the width of the cortex and its three constituent zones (glomerulata, fasciculata and reticulata). In the cortex generally accepted methodology calculated the average volume of the cells, their nuclei and nucleoli. Studying the dynamics of changes in the number of adrenocorticocytes with dark or light and using kits of reagent «steroidIFA-cortisol» determined the concentration of cortisol in peripheral blood of animal.

Results.  The article investigates the structural changes of zona fasciculata adrenal cortical cells under the prolonged exposure of the red mud. It was established that the red mud exposure on the rats for 14 days causes increased adrenocortical functional, which was accompanied by corresponding changes in the structure of these cells and the morphometric data. The red mud exposure on 45-day-old rats reduces adrenocortical function and causes significant dystrophic and degenerative rearrangement in these cells. On the 180th day of the experiment adrenocorticocytes reduction function is accompanied by structural changes that are characteristic of the depletion stage of general adaptation syndrome.

Originality. Using modern biomedical research methods, new data regarding the character and dynamics of structural changes in adrenal cortical cells under the prolonged exposure of the red mud, has been obtained. The dependence of changes of the structure and the function of adrenal cortical cells on the duration of the red mud exposure in animals’ organisms of all ages has been established.

Conclusion. The prolonged exposure of the red mud on animals’ organisms leads to significant changes in the structural organization in adrenal cortical cells, the character of which depends on both the duration of the red mud exposure as well as on the animals’ age.


Keywords


adrenal gland; zona fasciculata; adrenal cortical cells; structure; red mud

References


Kartashev A.G. (2010) Effect of chronic factors in postnatal ontogenesis of animals. Tomsk: “In-Spectrum” (in Russ.).

Lapach S.K.(2001) Statistical methods in biomedical research using Exel. K: MORION (in Russ.).

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Pykaliuk V.S., Shkurenko V.P., & Kutia S.A. (2007) Organs of internal secretion Simferopol (in Russ.).

Rogozina O.V., Ozerova N.Yu., & Kashirina N.K. (2009) Morphology of adenohypophysis and adrenal glands under the influence of lead intoxication and its correction (World of medicine and biology), 3, 136-140 (in Russ.).


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