MORPHOLOGY AND FUNCTIONAL STATE OF THE RAT PINEAL GLAND IN CHRONIC ETHANOL INTOXICATION
Experemental medicine

MORPHOLOGY AND FUNCTIONAL STATE OF THE RAT PINEAL GLAND IN CHRONIC ETHANOL INTOXICATION

Published 2022-02-09

Authors:

V.V. Pshychenko
V.S. Cherno
Yu.D. Frenkel
L.D. Chebotar
О.М. Larycheva

Abstract:
The purpose of the study was to establish the features of the morpho-functional state of the rat pineal gland in conditions of chronic ethanol intoxication. The results of the study showed that after 30 days of exposure to ethanol, the total number of pineal cells decreases significantly. An increase in the volume of the cytoplasm is determined due to vacuolation processes of varying degrees. Along with the decrease in the number of pinealocytes, the content of glial cells increases, which indicates a decrease in the functional activity of the pineal gland under experimental conditions. The structural organization of dark pinealocytes is also changing. Dark cell nuclei were found to lose a high degree of basophilia due to heterochromatin decondensation. Such morphological changes may indicate the transformation of dark cells in the light.
Keywords:
ethanol pineal cells gliocytes vacuolar dystrophy apoptosis rats
References:
  1. Bondarenko LA, Gubina-Vakuli GI, Gevorgyan AR. Pinealnaya zheleza i gipotalamo-gipofizarno-tireoidnaya sistema: vozrastnye i khronobiologicheskie aspekty. Harkov: Institut endokrinnoy patologii; 2013. 262 s. [in Ukrainian]
  2. Hryntsova NB, Romanyuk AM, vynakhidnyky; Sumskyi derzhavnyi universytet, patentovlasnyk. Sposib identyfikatsii i atravmatychnoho vyluchennia epifiza u shchuriv. Patent Ukrainy № 142276. 2020 tra 25. [in Ukrainian]
  3. Lomakіna YuV. Osoblyvosti korektsii morfofunktsionalnykh zmin shyshkopodibnoyi zalozy starykh shchuriv na foni svitlovoyi depryviatsii v umovakh stresu. Problemy stareniya i dolgoletiya. 2012; 21(3):311–5. [in Ukrainian]
  4. Shormanova, NS. Kulikov SV. Morfologicheskaya harakteristika osnovnykh struktur golovnogo mozga v norme i v usloviyah hronicheskoy alkogolnoy intoksikatsii. Izvestiya vysshikh uchebnykh zavedeniy. Povolzhskiy region. Meditsinskie nauki. 2017; 3(43):32–40. [in Russiаn]
  5. Scherbakova VM Morfometricheskie pokazateli osnovnykh strukturnykh komponentov nefronov belykh krys pri ostroy i khronicheskoy alkogolnoy intoksikatsii v eksperimente. Sudebno-medicinskaya ekspertiza. 2016 Jul-Aug; 59(4):28–30. [in Russiаn]
  6. Davis BT, Voigt RM, Shaikh M, Forsyth CB, Keshavarzian A. Circadian Mechanisms in Alcohol Use Disorder and Tissue Injury. Alcohol Clin Exp Res. 2018 Apr; 42(4):668–7.
  7. Gogichadze M, Nemsadze M, Lortkipanidze N, Khachaturovy E, Oniani N. Reflection of tolerance to alcohol in the structure of the sleep wakefulness cycle. Georgian Med News. 2014 Oct; (235): 87–92.
  8. Hryntsova N, Timakova O, Romaniuk O, Timchenko Z, Korobchanska A, Romaniuk A. Adaptive alterations of pinealocytes after the long-term influence of heavy metal salts on the body. Virchows Archiv. 2020; 477 (1): 138
  9. Kurhaluk N, Tkachenko N. Melatonin and alcohol-related disorders. Chronobiol Int. 2020 Jun; №37(6):781–803. DOI: 10.1080/07420528.2020.1761372
  10. Luo J. Effects of Ethanol on the Cerebellum: Advances and Prospects Cerebellum. 2015 Aug; 14(4):383–5. DOI: 10.1007/s12311-015-0674-8
  11. Martínez-Salvador J, Ruiz-Torner A, Blasco-Serra A, Martínez-Soriano F, Valverde-Navarro AA. Morphologic variations in the pineal gland of the albino rat after a chronic alcoholisation process. Tissue Cell. 2018 Feb 02; 51: 24–1. DOI: 10.1016/j.tice.2018.01.004
  12. Rocco A, Compare D, Angrisani D, Sanduzzi Zamparelli M, Nardone G. Alcoholic disease: liver and beyond. World J Gastroenterol. 2014 Oct 28; 20(40):14652–9. DOI: 10.3748/wjg.v20.i40.14652
  13. Varadinova M, Lozanova Valcheva-Traykova M, Boyadjieva N. Effect of Circadian Rhythm Disruption and Alcohol on the Oxidative Stress Level in Rat Brain. Am J Ther. 2016 Nov/Dec; 23(6): 1801–5. DOI: 10.1097/MJT.0000000000000363
  14. Yeroshenko GA, Shevchenko KV, Lisachenko OD, Vilhova OV, Yakushko OS, Skotarenko TA, Bilash VP. Ultrastructural remodeling of rat submandibular glands in chronic ethanol intoxication. World of medicine and biology. 2020; 3(73):175–8. DOI 10.26724/2079-8334-2020-3-73-175-178
  15. Yeroshenko GА, Fedoniuk LYa, Shevchenko KV, Kramarenko DR, Yachmin АІ, Vilkhova OV, Skotarenko TA. Structural reorganization of the rats’ submandibular glands acini after the influence of 1% methacrylate. Wiadomosci lekarskie. 2020;73(7):1318–22. DOI: 10.36740/WLek202007102
Publication:
«World of Medicine and Biology» Vol. 18 No. 79 (2022) , с. 223-227
УДК 591.481.3