Influence of polyunsaturated and saturated dietary lipids on adipose tissue, brain and mitochondrial membrane fatty acid composition of a mammalian hibernator.

@article{Geiser1990InfluenceOP,
  title={Influence of polyunsaturated and saturated dietary lipids on adipose tissue, brain and mitochondrial membrane fatty acid composition of a mammalian hibernator.},
  author={F. Geiser},
  journal={Biochimica et biophysica acta},
  year={1990},
  volume={1046 2},
  pages={
          159-66
        }
}
  • F. Geiser
  • Published 1990
  • Biology, Medicine
  • Biochimica et biophysica acta
Dietary lipid composition profoundly influences the hibernation pattern of the chipmunk Eutamias amoenus. [...] Key Method Animals were fed with rodent chow (control diet), rodent chow with 10% sunflower seed oil (unsaturated diet) and rodent chow with 10% sheep fat (saturated diet). Diet-induced changes in the fatty acid composition of depot fat and brain total lipids and of mitochondrial phospholipids were determined. The fatty acid unsaturation index was lower in animals on saturated diet than in animals on…Expand
The effect of unsaturated and saturated dietary lipids on the pattern of daily torpor and the fatty acid composition of tissues and membranes of the deer mouse Peromyscus maniculatus
  • F. Geiser
  • Biology, Medicine
  • Journal of Comparative Physiology B
  • 2004
TLDR
Dietary lipids may play an important role in the seasonal adjustment of physiology in heterothermic mammals and are associated with significant alterations in the fatty acid composition of depot fat, leg muscle and brain total lipids, and heart mitochondrial phospholipids. Expand
Polyunsaturated dietary lipids lower the selected body temperature of a lizard
TLDR
It is suggested that the composition of dietary lipids influences thermoregulation in ectothermic vertebrates and may thus play a role in the seasonal adjustment of their physiology. Expand
The degree of dietary fatty acid unsaturation affects torpor patterns and lipid composition of a hibernator
TLDR
The results suggest that the degree of unsaturation of dietary fatty acids influences the composition of tissues and membranes which in turn may influence torpor patterns and thus survival of hibernation. Expand
High content of polyunsaturated fatty acids in muscle phospholipids of a fast runner, the European brown hare (Lepus europaeus)
TLDR
It is suggested that the high degree of muscle membrane unsaturation is related to hare-specific traits, such as a high maximum running speed, which may reflect thermoregulatory adjustments. Expand
Dietary fats and torpor patterns in hibernating ground squirrels
TLDR
It appears that the composition of dietary fatty acids, rather than the fat content of the diet, affected torpor patterns in Spermophilus saturatus, a relatively large hibernator. Expand
Nutritional ecology of essential fatty acids: an evolutionary perspective
TLDR
The role of essential fats in the diet of animals on (1) basal metabolic rate, (2) thermoregulation, (3) maximum longevity, and (4) exercise performance is discussed. Expand
Dietary fats, selected body temperature and tissue fatty acid composition of agamid lizards (Amphibolurus nuchalis)
TLDR
The observed diet-induced differences in the fatty acid composition of depot fat, liver and muscle suggest that dietary lipids may influence selection of body temperature in ectotherms via alterations of body lipid composition. Expand
Dietary fatty acids composition modulates oxidative stress and cellular injury in the liver of CBrCl3 intoxicated rats
TLDR
The dietary induced changes of membrane fatty acids composition were associated with different susceptibility to oxidative stress and cell damage, as assessed by conjugated dienes and cytosolic enzyme release respectively following CBrCl 3 intoxication. Expand
The Effect of Dietary Fatty Acids on the Pattern of Torpor in a Marsupial
TLDR
The results indicate that dietary, unsaturated fatty acids are important in the seasonal acclimatization of heterothermic mammals. Expand
The impact of dietary fats, photoperiod, temperature and season on morphological variables, torpor patterns, and brown adipose tissue fatty acid composition of hamsters, Phodopus sungorus
TLDR
It is suggested that the seasonal change of body mass, fur colour and testes size are not significantly affected by dietary fatty acids, however, dietary fats influence the occurrence of torpor in individuals maintained at low temperatures and that have been photoperiodically primed for the display of torpora. Expand
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References

SHOWING 1-10 OF 21 REFERENCES
The effect of dietary lipids on the thermotropic behaviour of rat liver and heart mitochondrial membrane lipids.
TLDR
Results indicate that certain domains of mitochondriallipids, probably containing some relatively higher melting-point lipids, independently undergo formation of the solidus or gel phase and this phenomenon is not greatly influenced by the lipid composition of the mitochondrial membranes. Expand
Differential modulation of rat heart mitochondrial membrane-associated enzymes by dietary lipid.
TLDR
A differential response of the two mitochondrial membrane enzymes to dietary-induced changes in membrane lipid composition may affect mitochondrial oxidative phosphorylation. Expand
Relationship of diet to the fatty acid composition of human adipose tissue structural and stored lipids.
TLDR
Although diet was found to relate to fatty acid composition, the structural lipids in human adipose tissue appear more resistant to compositional change than stored triglycerides. Expand
Diet fat influences liver plasma-membrane lipid composition and glucagon-stimulated adenylate cyclase activity.
TLDR
It is suggested that transitions in dietary fat intake can alter a hormone-receptor-mediated enzyme function in vivo by changing the surrounding lipid environment. Expand
Altered levels of n-6/n-3 fatty acids in rat heart and storage fat following variable dietary intake of linoleic acid.
TLDR
Changes in myocardial phospholipid fatty acid composition are similar to those observed after short-term feeding reported previously and confirm that changes in dietary n-6/n-3 fatty acid intake affect the fatty Acid composition of both myocardIAL membranes and storage fat. Expand
The effect of low environmental temperature on the composition of depot fat in relation to hibernation
TLDR
The present investigation is primarily concerned with the relation between environmental temperature and fat composition in hibernating mammals which can tolerate a fall in body temperature of 300 C or more without ill effects. Expand
Inhibition of nuclear T3 binding by fatty acids.
TLDR
Unsaturated fatty acids were potent inhibitors of the binding of [125I] T3 to isolated rat liver nuclei and phospholipase A2 demonstrated a progressive inhibition of nuclear T3 binding with time when compared with ether extracts of untreated rat liver homogenate. Expand
Direct transesterification of all classes of lipids in a one-step reaction.
TLDR
This one-step direct transesterification procedure carried out in methanol-benzene 4:1 with acetyl chloride is superior to currently used methods not onlyBecause of its simplicity and speed, but also because of its added precision. Expand
A rapid method of total lipid extraction and purification.
TLDR
The lipid decomposition studies in frozen fish have led to the development of a simple and rapid method for the extraction and purification of lipids from biological materials that has been applied to fish muscle and may easily be adapted to use with other tissues. Expand
Hibernation-induced changes in the ganglioside composition of dormice (Glis glis)
TLDR
The hypothesis, that neuronal membranes provided with more polar gangliosides at lower environmental temperatures might be more efficient with respect to the high complexation ability of gangLiosides to Ca 2+ ions is discussed. Expand
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