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Submicroscopic changes of of hemomicrocirculatory bed of the lungs in long term experimental streptozotocin-induced diabetes mellitus

Yuliya Fedorchenko, Lubomyr Zaiats
European Respiratory Journal 2021 58: PA3608; DOI: 10.1183/13993003.congress-2021.PA3608
Yuliya Fedorchenko
1Ivano-frankivsk, Ivano-Frankivsk, Ukraine
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  • For correspondence: juliakozubash@gmail.com
Lubomyr Zaiats
1Ivano-frankivsk, Ivano-Frankivsk, Ukraine
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Abstract

Objective: To study the dynamics of ultrastructural changes in the hemocapillaries of the alveolar wall of the lungs in the long term experimental streptozotocin-induced diabetes mellitus.

Methods: Experiments were carried out on 30 white male Wistar rats, 170-210 grams weight. Diabetes mellitus was induced by intraperitoneal injection of streptozotocin solution ('Sigma', USA), diluted in 0.1 M citrate buffer with pH 4,5 in dose of 60 mg/kg of weight. Pulmonary tissue sample acquirement for electronic microscopic research was performed under thiopental narcosis after 42, 56 and 70 days after streptozotocin injection. Sections received on ultramicrotome “Tesla BS-490” were studied using electron microscope “PEM-125K”.

Results: Endothelial cell nuclei with low electron-optical density matrix and marginal aggregation of chromatin granules. The perinuclear space was expanded. In many endothelial cells, the destruction of mitochondria was determined. Cisterns of Goldzhi apparatus alongside with rough endoplasmic reticulum were expanded and fragmentated in most cases. The number of ribosomes on the outer membrane surface of rough endoplasmic reticulum was reduced. The basement membrane underwent thickening with irregular contours. In the peripheral parts of endotheliocytes multiple micropinocytotic vesicles and vacuoles were observed. In the lumen of many hemocapillaries of the alveolar wall, red blood cells sludges and platelet aggregates were noted.

Conclusions: conducted study showed that experimental diabetes mellitus was accompanied by significant dystrophic-destructive changes in the hemomicrocirculatory bed of the alveolar wall in distant terms(70 days).

  • Comorbidities
  • Lung mechanics
  • Experimental approaches

Footnotes

Cite this article as: European Respiratory Journal 2021; 58: Suppl. 65, PA3608.

This abstract was presented at the 2021 ERS International Congress, in session “Prediction of exacerbations in patients with COPD”.

This is an ERS International Congress abstract. No full-text version is available. Further material to accompany this abstract may be available at www.ers-education.org (ERS member access only).

  • Copyright ©the authors 2021
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Submicroscopic changes of of hemomicrocirculatory bed of the lungs in long term experimental streptozotocin-induced diabetes mellitus
Yuliya Fedorchenko, Lubomyr Zaiats
European Respiratory Journal Sep 2021, 58 (suppl 65) PA3608; DOI: 10.1183/13993003.congress-2021.PA3608

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Submicroscopic changes of of hemomicrocirculatory bed of the lungs in long term experimental streptozotocin-induced diabetes mellitus
Yuliya Fedorchenko, Lubomyr Zaiats
European Respiratory Journal Sep 2021, 58 (suppl 65) PA3608; DOI: 10.1183/13993003.congress-2021.PA3608
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