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CLINICAL CYTOLOGY OF THE LIVER: MITOCHONDRIA

  • V. P. Andreev Educational Institution «Grodno State Medical University»
  • V. M. Tsyrkunov Educational Institution «Grodno State Medical University» https://orcid.org/0000-0002-9366-6789
  • R. I. Kravchuk Educational Institution «Grodno State Medical University»
  • M. N. Kurbat Educational Institution «Grodno State Medical University» http://orcid.org/0000-0002-8518-2450
Keywords: liver, mitochondria, fixation, changes, visualization

Abstract

Background. In recent years, ideas about mitochondria (MX) previously considered only as «energy blocks» of the cell that produce ATP have changed. MX is one of the targets of the HCV attack in chronic hepatitis C (CHC). The objective of the study is to present the morphological characteristic of liver MX in chronic hepatitis C using the original method of tissue fixation. Materials and methods. We employed methods of light microscopy of semi-thin sections with the use of improved methods of fixation and electron microscopy of ultrathin sections. To take pictures, a complex comprising a digital camera and the image processing program Olympus Mega View III (Germany) were used. Results. As a result of the research, the following variants of changes in hepatocyte MX were identified: swelling, condensation (compaction) of the matrix, disruption of the crista structure; disruption of mitochondrial fusion; mitochondrial division and fragmentation; destruction of MX by the formation of mitophagolysosome. The illustrations of macroautophagy, in which the degradation of large cell organelles and large protein aggregates with the formation of autophagosome occurs, are given. The initiating links of the mitochondrial apoptosis pathway have been studied in HIV-infected patients with chronic hepatitis C who are on antiretroviral therapy. Conclusion. The visualization of MX in liver biopsy, their distribution in the hepatocyte cytoplasm, the number, variability and monitoring of changes are important criteria for assessing the functional state of the liver under viral damage. The osmium fixative has obvious advantages over other existing reagents.

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Published
2019-02-19
How to Cite
1.
Andreev VP, Tsyrkunov VM, Kravchuk RI, Kurbat MN. CLINICAL CYTOLOGY OF THE LIVER: MITOCHONDRIA. journalHandG [Internet]. 2019Feb.19 [cited 2024May18];2(2):143-5. Available from: http://www.journal-grsmu.by/index.php/journalHandG/article/view/78
Section
Оригинальные исследования

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