The Features of Erythropoiesis in Hibernating Ground Squirrels Urocitellus undulatus

Morphofunctional features of the bone marrow obtained from the femoral shaft and humeral diaphysis of long-tailed ground squirrels were studied in summer and fall, as well as during torpor bouts and short-term winter arousals (winter euthermic intervals). Histological analysis showed an increase in...

Celý popis

Uloženo v:
Podrobná bibliografie
Vydáno v:Journal of evolutionary biochemistry and physiology Ročník 60; číslo 6; s. 2381 - 2389
Hlavní autoři: Lizorkina, K. I., Aksenova, G. E., Afanasyev, V. N., Teplova, P. O., Zakharova, N. M.
Médium: Journal Article
Jazyk:angličtina
Vydáno: Moscow Pleiades Publishing 01.11.2024
Springer Nature B.V
Témata:
Adipocytes
Adipose tissue
Animal Physiology
Biochemistry
Biomedical and Life Sciences
Biophysics
Blood
Blood levels
Bone marrow
Cell cycle
Diaphysis
Erythrocytes
Erythropoiesis
Evolutionary Biology
Experimental Papers
Femur
Functional morphology
Heart
Hibernation
Humerus
Hypothermia
Life Sciences
Microscopy
Physiology
Rodents
Software
Summer
Torpor
Veterinary medicine
Winter
United States > US
China
Germany
Russia
erythropoiesis
long-tailed ground squirrel
blood oxygen saturation
hibernation
hypothermia
bone marrow
ISSN:0022-0930, 1608-3202
On-line přístup:Získat plný text
Tagy: Přidat tag
Žádné tagy, Buďte první, kdo vytvoří štítek k tomuto záznamu!
Popis
Shrnutí:Morphofunctional features of the bone marrow obtained from the femoral shaft and humeral diaphysis of long-tailed ground squirrels were studied in summer and fall, as well as during torpor bouts and short-term winter arousals (winter euthermic intervals). Histological analysis showed an increase in the count and size of bone marrow adipocytes in torpid animals, with a partial myeloid-to-adipose tissue replacement. Although the femoral bone marrow has a larger volume compared to the humeral, it contains significantly less nucleated cells, but significantly more erythroid islets, particularly during hibernation. In torpid ground squirrels, disc-shaped erythrocytes in the blood are replaced by atypical forms (oval- and target-shaped, macrocytes) whose counts drop significantly during winter euthermia. The reticulocyte count increases twofold during hibernation compared to the summer period. The results obtained are discussed in the context of maintaining high blood oxygen levels during torpor and erythropoiesis adaptation to conditions of prolonged hypothermia.
Bibliografie:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:0022-0930
1608-3202
DOI:10.1134/S0022093024060176