Morphometric study of angioarchitectonic under the effect of opioid (experimental study)

  • L.R. Mateshuk-Vatseba Danylo Halytsky Lviv National Medical University, Lviv, Ukraine
  • U.Ye. Pidvalna Danylo Halytsky Lviv National Medical University, Lviv, Ukraine
  • A.M. Bekesevych Danylo Halytsky Lviv National Medical University, Lviv, Ukraine
Keywords: morphometry, opioids, experiment, eyeball, сerebellum, vascular tunic.

Abstract

Opioids are potent drugs that are widely used to combat pain in severe wounds and in cancer patients. The professional literature provides a limited amount of data on the morphometric analysis of the links of the hemomicrocirculatory bed of the cerebellar cortex and choroid of the eyeball under the influence of an opioid in the experiment. The aim of the work was to establish the features and conduct morphometric studies of the links of the hemomicrocirculatory bed of the cerebellar cortex and choroid in normal conditions and under conditions of 6-week exposure to an opioid in the experiment. The experimental study was carried out on 24 male white rats, 3 months old and weighing 160-180 g. The material for the study is represented by preparations of the choroid and cerebellum with an injected vascular bed. Compared with the control group of animals, profound destructive changes in the angioarchitectonics of the choroid and cerebellar cortex were found under the influence of Nalbuphine. The capillary component is destroyed, the arterioles are tortuous, sclerosed, their lumen is uneven, the wall is thickened, the venules are dilated and deformed. A decrease in comparison with the norm in the diameter of arterioles, the density of the network of exchange vessels, arterio-venular coefficient, as well as an increase in the diameter of venules and an indicator of trophic activity of the tissue. Expansion of arterio-venular anastomoses indicates the discharge of blood from the arterioles into the venous bed, bypassing the destroyed capillaries. A pronounced relationship was established between the depth of structural transformations of the hemomicrocirculatory bed of the cerebellar cortex, choroid of the white rat’s eye and morphometric parameters. It has been confirmed that the triggering mechanism of destructive changes under the influence of narcotic analgesics is the development of angiopathy.

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References

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Published
2020-10-13
How to Cite
Mateshuk-Vatseba, L., Pidvalna, U., & Bekesevych, A. (2020). Morphometric study of angioarchitectonic under the effect of opioid (experimental study). Reports of Morphology, 26(3), 31-36. https://doi.org/10.31393/morphology-journal-2020-26(3)-04