Comment on Grahl-Nielsen et al. (2003) 'Fatty acid composition of the adipose tissue of polar bears and of their prey: ringed seals, bearded seals and harp seals'

2004 ◽  
Vol 281 ◽  
pp. 297-301 ◽  
Author(s):  
GW Thiemann ◽  
SM Budge ◽  
WD Bowen ◽  
SJ Iverson
Keyword(s):  
Adipose Tissue ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Polar Bears ◽  
Ringed Seals ◽  
Bearded Seals

scholarly journals Fatty acid composition of the adipose tissue of polar bears and of their prey: ringed seals, bearded seals and harp seals

2003 ◽  
Vol 265 ◽  
pp. 275-282 ◽  
Author(s):  
O Grahl-Nielsen ◽  
M Andersen ◽  
AE Derocher ◽  
C Lydersen ◽  
Ø Wiig ◽  
...  
Keyword(s):  
Adipose Tissue ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Polar Bears ◽  
Ringed Seals ◽  
Bearded Seals

The anatomy, chemical composition, and metabolism of adipose tissue in wild polar bears (Ursus maritimus)

1992 ◽  
Vol 70 (2) ◽  
pp. 326-341 ◽  
Author(s):  
Caroline M. Pond ◽  
Christine A. Mattacks ◽  
Richard H. Colby ◽  
Malcolm A. Ramsay
Keyword(s):  
Adipose Tissue ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Body Mass ◽  
Acid Composition ◽  
Ursus Maritimus ◽  
Superficial Layer ◽  
The Body ◽  
Polar Bears ◽  
Adipocyte Volume

Adipose tissue was dissected completely from 14 polar bears (Ursus maritimus) killed in the southeastern Northwest Territories and northern Manitoba in November 1988. Mean adipocyte volume, collagen content, the activities of hexokinase and phosphofructokinase, and the fatty acid composition of the triacylglycerols were measured in samples of adipose tissue from several superficial, intra-abdominal, and inter-muscular depots homologous to those of other terrestrial mammals. The total adipocyte complement was calculated from the mass of each depot and its site-specific adipocyte volume. All the adipose depots found in other Carnivora and most other mammals are present in polar bears. The superficial layer of adipose tissue in polar bears arises from thickening and lateral expansion of depots that are discrete in most other mammals. All depots except the cardiac adipose tissue expand with increasing fatness, but the superficial depots expand faster than any of the internal depots, almost entirely by adipocyte proliferation. The gross anatomy of the superficial adipose tissue is determined mainly by the effect of body mass on the ratio of the surface area of the body to its volume. The superficial depots account for a greater proportion of the total adipose tissue in larger bears and in fatter specimens. The total adipocyte complement is about two to three times greater than that predicted from allometric equations relating adipocyte complement to body mass in non-arctic carnivores. The fatty acid composition of the triacylglycerols in the adipose tissue of polar bears is similar to that of the milk and the serum, but there were fewer long-chain polyunsaturated fatty acids than in their principal prey, ringed seals. There was no clearcut biochemical evidence for the existence of a thermal gradient between the inner and outer sides of the superficial adipose tissue. We conclude that in spite of their arctic habitat, neither the gross distribution of adipose tissue of polar bears nor its biochemical properties are adapted to thermal insulation. The enlarged superficial layer of adipose tissue is primarily an adaptation to increased energy storage.

Platelet Aggregation in Finnish Men and Its Relation to Fatty Acids in Platelets, Plasma and Adipose Tissue

1985 ◽  
Vol 54 (03) ◽  
pp. 563-569 ◽  
Author(s):  
M K Salo ◽  
E Vartiainen ◽  
P Puska ◽  
T Nikkari
Keyword(s):  
Fatty Acids ◽  
Adipose Tissue ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Platelet Aggregation ◽  
Acid Composition ◽  
Saturated Fatty Acids ◽  
Free Living ◽  
Ω3 Fatty Acids ◽  
Induced Aggregation

SummaryPlatelet aggregation and its relation to fatty acid composition of platelets, plasma and adipose tissue was determined in 196 randomly selected, free-living, 40-49-year-old men in two regions of Finland (east and southwest) with a nearly twofold difference in the IHD rate.There were no significant east-southwest differences in platelet aggregation induced with ADP, thrombin or epinephrine. ADP-induced platelet secondary aggregation showed significant negative associations with all C20-C22 ω3-fatty acids in platelets (r = -0.26 - -0.40) and with the platelet 20: 5ω3/20: 4ω 6 and ω3/ ω6 ratios, but significant positive correlations with the contents of 18:2 in adipose tissue (r = 0.20) and plasma triglycerides (TG) (r = 0.29). Epinephrine-induced aggregation correlated negatively with 20: 5ω 3 in plasma cholesteryl esters (CE) (r = -0.23) and TG (r = -0.29), and positively with the total percentage of saturated fatty acids in platelets (r = 0.33), but had no significant correlations with any of the ω6-fatty acids. Thrombin-induced aggregation correlated negatively with the ω3/6ω ratio in adipose tissue (r = -0.25) and the 20: 3ω6/20: 4ω 6 ratio in plasma CE (r = -0.27) and free fatty acids (FFA) (r = -0.23), and positively with adipose tissue 18:2 (r = 0.23) and 20:4ω6 (r = 0.22) in plasma phospholipids (PL).The percentages of prostanoid precursors in platelet lipids, i. e. 20: 3ω 6, 20: 4ω 6 and 20 :5ω 3, correlated best with the same fatty acids in plasma CE (r = 0.32 - 0.77) and PL (r = 0.28 - 0.74). Platelet 20: 5ω 3 had highly significant negative correlations with the percentage of 18:2 in adipose tissue and all plasma lipid fractions (r = -0.35 - -0.44).These results suggest that, among a free-living population, relatively small changes in the fatty acid composition of plasma and platelets may be reflected in significant differences in platelet aggregation, and that an increase in linoleate-rich vegetable fat in the diet may not affect platelet function favourably unless it is accompanied by an adequate supply of ω3 fatty acids.

Adipose tissue fatty acid composition and colon cancer: a case–control study

2013 ◽  
Vol 53 (4) ◽  
pp. 1029-1037 ◽  
Author(s):  
A. Giuliani ◽  
F. Ferrara ◽  
M. Scimò ◽  
F. Angelico ◽  
L. Olivieri ◽  
...  
Keyword(s):  
Colon Cancer ◽  
Adipose Tissue ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Case Control Study ◽  
Case Control ◽  
Tissue Fatty Acid Composition ◽  
Adipose Tissue Fatty Acid ◽  
Control Study

Fatty Acid Composition of Subcutaneous Adipose Tissue in Mother-Infant Pairs

1987 ◽  
Vol 76 (1) ◽  
pp. 87-90 ◽  
Author(s):  
G. E. ANDERSEN ◽  
N. C. CHRISTENSEN ◽  
M. B. V. PETERSEN ◽  
K. B. JOHANSEN
Keyword(s):  
Adipose Tissue ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Subcutaneous Adipose Tissue ◽  
Subcutaneous Adipose
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