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Metabolic and biochemical aspects of heat acclimation in the deer mouse. Peromyscus maniculatus sonoriensis.

J C Roberts·R R Chaffee
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AcclimatizationAdipose Tissue, BrownAnimalsBasal MetabolismBody TemperatureBody Temperature RegulationBody WeightFemaleHot TemperatureHydroxybutyrate DehydrogenaseKidneyL-Serine DehydrataseLiverMaleMiceOrgan SizeOxidative PhosphorylationOxygen ConsumptionSuccinate DehydrogenaseThreonine DehydrataseJournal ArticleResearch Support, U.S. Gov't, Non-P.H.S.Research Support, U.S. Gov't, P.H.S.

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J C Roberts, R R Chaffee. 1976. Metabolic and biochemical aspects of heat acclimation in the deer mouse. Peromyscus maniculatus sonoriensis.. https://doi.org/10.1016/s0300-9629(76)80158-2

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The correlation between the fluidity of phospholipids and their fatty acid composition was studied by spin label technique and gas-liquid chromatography for three major phospholipid species in Tetrahymena pyriformis during temperature acclimation. The fluidity of 2-aminoethylphosphonolipid increased within the first 10 h of the cold-acclimation when the content of gamma-linolenic acid in 2-aminoethylphosphonolipid was highest, and it then decreased up to 24 h. On the other hand, the fluidities of phosphatidylethanolamine and phosphatidylcholine showed a gradual decrease up to 24 h after the temperature shift, although gamma-linolenic acid contents were highest at 10 h after the temperature shift. Thus the fluidity changes of these two phospholipids were interpreted as resulting from the altered content of other fatty acids in addition to gamma-linolenic acid, since the gamma-linolenic acid content was smaller than that of 2-aminoethylphosphonolipid. The results suggest that the content of gamma-linolenic acid in 2-aminoethylphosphonolipid plays a role in regulating the thermal adaptation process.

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PubMed1979

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