We studied the mechanisms underlying decreased production of epinephrine by adrenal glands in rats developmentally exposed to endocrine disruptor DDT was performed on the basis of assessment of morphology, fine structure, and function of the adrenal medulla and medullary cells. It was found that the main mechanisms of disruptive action of DDT leading to a decrease in epinephrine secretion into systemic circulation are a decrease in the growth rate of the adrenal medulla, a decrease in the number of mitochondria in adrenal cells, especially under the outer cytoplasmic membrane, destructive changes in mitochondria, and a progressive decrease in the synthesis of tyrosine hydroxylase. The decrease in the number of mitochondria and suppression tyrosine hydroxylase synthesis in adrenal cells predominate during the pubertal period, while slowdown of the growth of the adrenal medulla and progressive decrease in the synthesis of tyrosine hydroxylase seem to be the most evident mechanisms after puberty.
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Translated from Byulleten’ Eksperimental’noi Biologii i Meditsiny, Vol. 173, No. 1, pp. 128-132, January, 2022
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Yaglova, N.V., Obernikhin, S.S., Tsomartova, D.A. et al. Mechanisms of Suppression of Epinephrine Production in Rats by Low-Dose Developmental Exposure to DDT. Bull Exp Biol Med 173, 110–113 (2022). https://doi.org/10.1007/s10517-022-05503-5
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DOI: https://doi.org/10.1007/s10517-022-05503-5