Morphohistochemical alterations of neurons of the supraoptic nucleus of the rat hypothalamus at different durations of the photoperiod and melatonin administration.

Autor: Bulyk RY; Department of Medical Biology and Genetics, Bukovinian State Medical University, Chernivtsi, Ukraine., Smetanyuk OV; Department of Medical Biology and Genetics, Bukovinian State Medical University, Chernivtsi, Ukraine., Vlasova KV; Department of Medical Biology and Genetics, Bukovinian State Medical University, Chernivtsi, Ukraine., Kryvchanska MI; Department of Medical Biology and Genetics, Bukovinian State Medical University, Chernivtsi, Ukraine., Yosypenko VR; Department of Medical Biology and Genetics, Bukovinian State Medical University, Chernivtsi, Ukraine., Voloshyn VL; Department of Medical Biology and Genetics, Bukovinian State Medical University, Chernivtsi, Ukraine., Tymchuk KY; Department of Medical Biology and Genetics, Bukovinian State Medical University, Chernivtsi, Ukraine., Bulyk TS; Department of Obstetrics and Gynecology, Bukovinian State Medical University, Chernivtsi, Ukraine., Rynzhuk LV; Department of Obstetrics and Gynecology, Bukovinian State Medical University, Chernivtsi, Ukraine., Sheremet MI; Surgery Department No.1, Bukovinian State Medical University, Chernivtsi, Ukraine., Proniaiev DV; Department of Anatomy, Clinical Anatomy and Operative Surgery, Bukovinian State Medical University, Chernivtsi, Ukraine.
Jazyk: angličtina
Zdroj: Journal of medicine and life [J Med Life] 2021 Nov-Dec; Vol. 14 (6), pp. 810-815.
DOI: 10.25122/jml-2021-0220
Abstrakt: We studied the morphologic and histochemical organization of neurons of the hypothalamic supraoptic nucleus in rats exposed to different durations of photoperiod and injection of melatonin. Morphometric and histochemical analyses of neurons were performed after staining brain histological sections for RNA. Prolonged illumination leads to more pronounced changes in the parameters of hypothalamic structures at 2 a.m. than at 2 p.m., particularly decreasing the concentration of RNA in the cell nuclei. The use of exogenous melatonin does not normalize the revealed changes in the parameters of the studied structures of the neurons of the supraoptic nucleus of the hypothalamus caused by the prolonged stay of rats under conditions of constant illumination.
(©2021 JOURNAL of MEDICINE and LIFE.)
Databáze: MEDLINE
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