Changes in phospholipid composition in hibernating ground squirrel,Citellis lateralis, and their relationships to membrane function at reduced temperatures
10.1007/bf02533824
Crossref journal-article
Wiley
Lipids (311)
Abstract

AbstractThe hearts of hibernating mammals have the capacity to function at reduced temperatures of 1 C in contrast to hearts of nonhibernating mammals which undergo ventricular fibrillation during deep hypothermia. Thus, all vital membrane functions continue in hibernators. This suggests that there may be special features of their lipid and protein composition. Analysis of the hearts of the hibernating ground squirrel,Citellus lateralis, in the active (37 C) and hibernating state (1–4 C) reveals differences in the percent composition of the phospholipid classes. There is a decrease in the percentage of diacyl choline, ethanolamine, serine phosphoglycerides, and diphosphatidyl glycerol and an increase in the percentage of lysophosphatidyl choline, lysophosphatidyl ethanolamine, lysodiphosphatidyl glycerol, and phosphatidic acid in the hibernating state. There is also an increase in the molar amount of phosphorus/100 g fresh wt of tissue during hibernation. The most striking difference in phospholipid composition between active and hibernating heart tissue is the 3.5‐fold increase in lysoglycerophosphatides. These compounds are implicated as contributing factors controlling membrane fluidity during hibernation and upon which the physiological state of hibernation may be contingent.

Bibliography

Aloia, R. C., Pengelley, E. T., Bolen, J. L., & Rouser, G. (1974). Changes in phospholipid composition in hibernating ground squirrel,Citellis lateralis, and their relationships to membrane function at reduced temperatures. Lipids, 9(12), 993–999. Portico.

Authors 4
  1. Roland C. Aloia (first)
  2. Eric T. Pengelley (additional)
  3. James L. Bolen (additional)
  4. George Rouser (additional)
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Dates
Type When
Created 18 years, 9 months ago (Nov. 22, 2006, 2 a.m.)
Deposited 1 year, 11 months ago (Sept. 28, 2023, 7:01 p.m.)
Indexed 1 year, 3 months ago (May 18, 2024, 12:59 p.m.)
Issued 50 years, 8 months ago (Dec. 1, 1974)
Published 50 years, 8 months ago (Dec. 1, 1974)
Published Online 50 years, 8 months ago (Dec. 1, 1974)
Published Print 50 years, 8 months ago (Dec. 1, 1974)
Funders 0

None

@article{Aloia_1974, title={Changes in phospholipid composition in hibernating ground squirrel,Citellis lateralis, and their relationships to membrane function at reduced temperatures}, volume={9}, ISSN={1558-9307}, url={http://dx.doi.org/10.1007/bf02533824}, DOI={10.1007/bf02533824}, number={12}, journal={Lipids}, publisher={Wiley}, author={Aloia, Roland C. and Pengelley, Eric T. and Bolen, James L. and Rouser, George}, year={1974}, month=dec, pages={993–999} }