Scientific journal
Scientific Review. Biological science
ISSN 2500-3399
ПИ №ФС77-57454

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HISTOMORPHOLOGICAL CHARACTERISTICS OF THYROID GLAND STRUCTURE OF INDIGENOUS MALES IN THE REPUBLIC OF SAKHA (YAKUTIA) IN VARIOUS SEASONS OF A YEAR

Yegorova A.I. 1 Garmayeva D.K. 1
1 «North-Eastern federal university named after M.K. Ammosov»
Morphological analysis of macro-, microstructure of thyroid gland (TG) of indigenous males in the Republic of Sakha (Yakutia) in different seasons of a year has been conducted. Macromorphological indicators of the thyroid gland of Yakut men (relative and absolute mass, general volume, linear indicators) during summer and winter periods have been specified. Micromorphometric characteristic of structural components of Yakut men’s thyroid gland tissue depending on seasons of the year has been provided. At the same time, it has been revealed that Yakut males’ thyroid gland belongs to normocellular mixed type of structure; values of external and internal diameter of TG follicles are slightly bigger in wintertime compared to summer season of the year. The same tendency has been observed when calculating values of TG follicle-colloid index. Based on obtained data an attempt has been made to evaluate the influence of seasonal temperature factors on structural values of thyroid gland that can be used as morphological equivalent of adaptation processes of an organism in northern regions.