Features of erythropoiesis of hibernating ground squirrels Urocitellus Undulatus
- Authors: Lizorkina K.I.1, Aksenova G.E.1, Afanasyev V.N.1, Teplova P.O.1, Zakharova N.M.1
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Affiliations:
- Institute of Cell Biophysics RAS - separate subdivision of Federal State Budgetary Institution of Science Federal Research Centre ‘Pushchino Scientific Centre for Biological Research RAS’
- Issue: Vol 60, No 6 (2024)
- Pages: 599–607
- Section: EXPERIMENTAL ARTICLES
- URL: https://journals.rcsi.science/0044-4529/article/view/276213
- DOI: https://doi.org/10.31857/S0044452924070026
- EDN: https://elibrary.ru/KKEALF
- ID: 276213
Cite item
Abstract
The morphofunctional features of the bone marrow of the femur and humerus in long-tailed ground squirrels were studied in summer, fall, during torpor and during periods of short-term awakenings in winter (winter euthermia). Histological analysis showed an increase in the number and size of adipocytes in the bone marrow in animals in the torpor state, with partial replacement of myeloid tissue by adipose tissue. Despite the greater volume of bone marrow in the femur, significantly fewer nuclear cells were found in the bone marrow than in the humerus, but significantly more erythroid islets were found, especially during hibernation. In torpid ground squirrels there is a replacement of disc-shaped erythrocytes in the blood by atypical forms of erythrocytes (oval, macrocytes, and michenoid), the number of which decreases significantly during the winter euthermal period. The level of reticulocyte content increases in the hibernation period twofold compared to summer. The results obtained are discussed in the context of maintaining high blood oxygen levels during torpor and adaptation of erythropoiesis to conditions of prolonged hypothermia.
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About the authors
K. I. Lizorkina
Institute of Cell Biophysics RAS - separate subdivision of Federal State Budgetary Institution of Science Federal Research Centre ‘Pushchino Scientific Centre for Biological Research RAS’
Author for correspondence.
Email: lizorkina_kseniia@mail.ru
Russian Federation, Pushchino, Moscow Region
G. E. Aksenova
Institute of Cell Biophysics RAS - separate subdivision of Federal State Budgetary Institution of Science Federal Research Centre ‘Pushchino Scientific Centre for Biological Research RAS’
Email: lizorkina_kseniia@mail.ru
Russian Federation, Pushchino, Moscow Region
V. N. Afanasyev
Institute of Cell Biophysics RAS - separate subdivision of Federal State Budgetary Institution of Science Federal Research Centre ‘Pushchino Scientific Centre for Biological Research RAS’
Email: lizorkina_kseniia@mail.ru
Russian Federation, Pushchino, Moscow Region
P. O. Teplova
Institute of Cell Biophysics RAS - separate subdivision of Federal State Budgetary Institution of Science Federal Research Centre ‘Pushchino Scientific Centre for Biological Research RAS’
Email: lizorkina_kseniia@mail.ru
Russian Federation, Pushchino, Moscow Region
N. M. Zakharova
Institute of Cell Biophysics RAS - separate subdivision of Federal State Budgetary Institution of Science Federal Research Centre ‘Pushchino Scientific Centre for Biological Research RAS’
Email: lizorkina_kseniia@mail.ru
Russian Federation, Pushchino, Moscow Region
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