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HISTOCHEMICAL CHARACTERISTICS OF LOCALIZATION OF SODIUM IONS IN THE RESPIRATORY ORGANS OF EXPERIMENTAL ANIMALS UNDER TOTAL BODY COOLING WITH ADMINISTRATION OF DIHYDROQUERCETIN CYTOPROTECTOR

Abstract

The aim of the research was to study histochemical characteristics of Na+ ions localization in the lungs of rats under the influence of dihydroquercetin and experimental cold stress. White outbred rats were the object of the study. They were divided into three groups with 10 animals in each one. The first group included intact rats which were kept in the standard conditions of vivarium; the animals of the second group were exposed to low environmental temperatures of -15ºС during an hour a day for three months; the animals of the third group being exposed to cold temperatures also had a daily administration of per os dihydroquercetin in 50 mg per 1 kg of body weight with the help of probe. Na+ ions in the lungs of rats were revealed with histochemical reactions with antimonates on the frozen sections. At histochemical analysis there was found a high concentration of Na+ ions on the surface of pulmonary bronchial mucosa; the adventitious membrane is dyed with azure 2. In the intact animals of the first group the thickness of positively responsive to antimonite material in the epithelial tissue of pulmonary bronchi mucosa is 8.5±0.3 µm. In the second group under the exposure to cold it has increased till 15.0±0.7 µm (р<0.001 in comparison with the first group). With the administration of dihydroquercetin in the third group Na+ ions reaction intensiveness with antimonite drops till 9.3±0.3 µm and almost gets to the normal one. Granularly dyed with antimonite and alizarin red cellular elements are found in the places of moderate hyperemia of the respiratory part of the lungs. The thickness of interalveolar septum in intact animals was 5.7±0.77 µm; as a result of hyperemia of the respiratory part of the lungs that occurs due to the cooling of the animals’ body it increases till 11.0±0.9 µm (р<001) in the animals of the second group. Under the correction with dihydroquercetin the thickness of interalveolar septum decreases till 6.0±0.61 µm (р<0.01 in comparison with the second group). The results of the research prove the effectiveness of dihydroquercetin at its administration in a dose of 50 mg/kg for the correction of the total supercooling of the body.

About the Authors

Sergey V. Zinov'ev
Amur State Medical Academy
Russian Federation


Sergey S. Tseluyko
Amur State Medical Academy
Russian Federation


Xiangdong Zhou
Chongqing Medical University
Russian Federation


Qi Li
Chongqing Medical University
Russian Federation


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For citations:


Zinov'ev S.V., Tseluyko S.S., Zhou X., Li Q. HISTOCHEMICAL CHARACTERISTICS OF LOCALIZATION OF SODIUM IONS IN THE RESPIRATORY ORGANS OF EXPERIMENTAL ANIMALS UNDER TOTAL BODY COOLING WITH ADMINISTRATION OF DIHYDROQUERCETIN CYTOPROTECTOR. Bulletin Physiology and Pathology of Respiration. 2013;(48):70-75. (In Russ.)

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ISSN 1998-5029 (Print)