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Journal of Education, Health and Sport

Age changes in the tigroid substance of neutrons of the lateral preoptic nucleus of hypothalamus under different light modes
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Age changes in the tigroid substance of neutrons of the lateral preoptic nucleus of hypothalamus under different light modes

Authors

  • R. Bulyk Bukovinian State Medical University
  • V. Yosypenko Bukovinian State Medical University
  • M. Kryvchanska Bukovinian State Medical University
  • K. Vlasova Bukovinian State Medical University
  • Y. Lukan Bukovinian State Medical University

DOI:

https://doi.org/10.12775/JEHS.2021.11.10.025

Keywords

sleep-wake cycle, lateral preoptic nucleus of hypothalamus, circadian rhythms, photoperiod

Abstract

The article presents analysis of the results of the original histochemical studies of tigroid substance of neurons of the lateral preoptic nucleus of  hypothalamus in mature and old rats under the influence of different light modes. In all observations, the tigroid substance was located in the cytoplasm of neurons of the lateral preoptic nucleus of hypothalamus in the form of individual granular formations of different sizes and shapes. The amount of tigroid substance of neurons of the lateral preoptic nucleus of hypothalamus in mature rats is greater than in older rats. At the same time, it should be noted that different experimental conditions significantly affected the amount of tigroid substance in neurons of the lateral preoptic nucleus of hypothalamus in old rats. In particular, under conditions of light deprivation, the optical density of specific histochemical staining for tigroid substance in neurons of the lateral preoptic nucleus of hypothalamus increased significantly (p<0,001), and under conditions of light stimulation, on the contrary, probably decreased (p<0,001).

References

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Meira e Cruz M, Laranjo SM, Rocha I. Hypothalamic Control of Sleep-Wake Circadian Cycle [Internet]. In: Baloyannis S, Gordeladze J, editors. Hypothalamus in Health and Diseases. IntechOpen; 2018[cited 2021 Mar 31], p. 31-45. Available from: https://repositorio.ul.pt/bitstream/10451/42504/1/Hypothalamic.pdf doi: 10.5772/intechopen.79899

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Wahl S, Engelhardt M, Schaupp P, et al. The inner clock – blue light sets the human rhythm. Journal of Biophotonics. 2019; 12 (3): 1 – 14.

Chaulin AM, Duplyakova PD, Duplyakov DV. Tsyrkadnye ritmy serdechnykh tropinov: mekhanizmy i klinicheskoe znachenie. Rossiyskiy kardiologicheskiy zhurnal. 2020; 25 (S3): 62 – 69. [in Russian].

Koval'zon VM, Dorokhov VB. Tsikl bodrstvovanie-son i bioritmy cheloveka pri razlichnykh rezhimakh cheredovaniya svetlogo i temnogo perioda sutok. The journal of scientific articles “Health & education millennium”. 2013; 15 (1-4): 151 – 162. [in Russian].

Dolhov OM. Na dopomohu studenta. Nervova tkanyna. Vinnytsia; 2016. 44 s. [in Ukrainian].

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Published

2021-10-29

How to Cite

1.
BULYK, R., YOSYPENKO, V., KRYVCHANSKA, M., VLASOVA, K. & LUKAN, Y. Age changes in the tigroid substance of neutrons of the lateral preoptic nucleus of hypothalamus under different light modes. Journal of Education, Health and Sport [online]. 29 October 2021, T. 11, nr 10, s. 269–274. [accessed 25.3.2023]. DOI 10.12775/JEHS.2021.11.10.025.
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Issue

Vol. 11 No. 10 (2021)

Section

Research Articles

License

Copyright (c) 2021 R. Bulyk, V. Yosypenko, M. Kryvchanska, K. Vlasova, Y. Lukan

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

The periodical offers access to content in the Open Access system under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0

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