ORGANOMETRIC AND MORPHOMETRIC INDICATORS OF THE THYROID GL AND OF CHILDREN, WICH WERE BORN AT DIFFERENT GESTATIONAL AGE , WITH A SMALL BODY WEIGHT
DOI:
https://doi.org/10.21856/j-PEP.2017.4.06Keywords:
organometric parameters, morphometry, thyroid gland, children born with a small body weight.Abstract
The comparative analysis of the organometric and morphometric parameters of the thyroid glands of children born with low weight at different stages of gestation was carried out. During the study, it was found that in the group of children 28–36 weeks of gestation with a follicular-colloidal and mixed type of thyroid structure, the maximum diameter of the nuclei and height of the thyrocytes take place, although 37–40 weeks of gestation with these types of observed a decline in these indicators. The volumes of interfolicular epithelium and stromal component were statistically significantly decreased, depending on the growth of gestational age. The growth of the area and diameter of the follicles in the period from 22 to 40 weeks of gestation are connected with the accumulation of a colloid and indicates the hormone-producing activity of the organ during this period. With the desquamative type of the thyroid gland structure, an «emergency» reconstruction of the gland is observed as an adaptive mechanism for the action of negative factors on the mother and fetus.
Dynamics of growth of the absolute mass of the thyroid gland correlates with an increase in the body weight and its gestational age, but changes in the relative body mass index are related to the structural and functional type of organ structure (the smallest at the time of fetal death — specific for follicular-colloidal type, and the highest — for desquamative type).
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