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PubMed1985

[Not Available].

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Cod Liver Oil↗
PubMed1975

Changes in fatty acid composition of cardiac lipids accompanying myocardial necrosis.

Administration of isoproterenol induces changes in phospholipids of heart muscle membranes. Longer and more unsaturated fatty acids replace shorter and less unsaturated fatty acids. Dietary polyunsaturated fatty acids, i.e., C22:6, replace C18:2 and C20:4 in phospholipids of heart muscle. Increased sensitivity to isoproterenol and increased myocardial cell damage is accompanied by a relative increase in long chain polyunsaturated fatty acids in phospholipids of heart muscle. Development of myocardial necrosis increases with a progressive replacement of C18:2 and C20:4 by C22:6. Alterations in fatty acid composition of membrane phospholipids and consequent changes in membrane properties may play an important role in myocardial cell damage. Myocardial damage following administration of isoproterenol is increased when there is enhanced intramyocardial lipolysis and an increased amount of polyunsaturated fatty acids in membrane phospholipids. Mocardial damage is decreased when there is reduced intramyocardial lipolysis and the membrane response makes the membranes less permeable and more stable.

Animals↗
PubMed1990

Catabolism of leukotriene B5 in humans.

Human neutrophils, enriched by dietary supplementation with eicosapentaenoic acid, form leukotriene (LT)B5 in addition to LTB4 upon stimulation. LTB5 is one order of magnitude less biologically active than the potent chemokinetic and chemoattractant LTB4. Catabolites of LTB5 have not yet been characterized in vitro and ex vivo. It is unknown whether catabolism of LTB5 interferes with catabolism of LTB4. This report describes catabolism of LTB5 to 20-OH-LTB5, which in turn is catabolized to 20-COOH-LTB5. The structures of the two catabolites were established by UV-absorbance, behavior on reverse-phase high-performance liquid chromatography, enzymatic analysis of human neutrophils, and gas chromatography-mass spectrometry. In vitro, formation of LTB4 was delayed and formation of its catabolites was depressed by exogenous eicosapentaenoic acid. By supplementing the diet of six volunteers with 5 g eicosapentaenoic acid/day for 7 days, eicosapentaenoic acid quadrupled in neutrophil phospholipid fatty acids. Consequently, LTB5, 20-OH-LTB5, and 20-COOH-LTB5 were detected ex vivo. In contrast to the findings in vitro, however, levels of LTB4, 20-OH-LTB4, and 20-COOH-LTB4 were unaltered by the dietary intervention. Thus, in vitro, but not ex vivo, addition of eicosapentaenoic acid, and subsequent formation of LTB5, impeded catabolism of proinflammatory LTB4.

Chromatography, Gas↗
PubMed1996

[Evaluation of environmental exposure on persistent and toxic organic halogens].

The environmental concentrations of the persistent organohalogen compounds has been presented basing on the own results which were compared with the data published by the other authors. The predicted exposure of Polish population to PCDDs and PCDFs including combustion processes as a main potential source of the exposure has also been discussed. Analysis of the breast milk from Silesia region in Poland showed no substantial difference as compared to milk in other European countries.

Adipose Tissue↗
PubMed1976

A computer program for parallel line bioassays.

PARLIN is a program for the statistical analysis of biological assays that are either completely randomized, or in randomized blocks, in which the regression on log dose is linear with a constant variance per response. An earlier program (McArthur et al., J. Pharmacol. Exp. Ther. 153: 573-580, 1966) has been completely rewritten, improved and extended in its facilities. PARLIN, written in FORTRAN IV, will handle up to 99 test preparations, up to 100 doses in all, and up to 50 responses per dose. It is designed with special attention to simplicity for routine use, versatility of facilities and output immediately available for all forms of reporting results. A wide choice of transformations of response is available. The output reproduces the data for verification and tabulates potency estimates with limits at probabilities .95, .99; optional output includes an analysis of variance, information on validity, values of residuals and a rough plot of the dose-response relation.

Analysis of Variance↗
PubMed1984

High-performance liquid chromatographic determination of vitamin D3 in fish liver oils and eel body oils.

Identification and determination of vitamin D3 (or D2) and 25-OH-D3 in fish liver oils and eel body oils were carried out. By co-chromatography on HPLC, UV spectra and/or GC-MS, vitamin D3 was identified in naturally occurring fish liver oils and eel body oils, whereas a drop of fish liver oil contained supplemented vitamin D2. 25-OH-D3 was identified only in skipjack liver oil. The HPLC method proposed in a previous report (Takeuchi, A. et al. (1984): J. Nutr. Sci. Vitaminol., 30, 11-25) was confirmed to also be useful for determination of vitamin D3 (or D2) in fish liver oils and eel body oils. The assayed values of vitamin D3 in skipjack and tuna liver oils were 57,760 and 16,200 IU/g, respectively, which were much higher than those in cod and pollack liver oils. The assayed values of vitamin D3 in eel body oils were very low (16-43 IU/g) and showed no appreciable change despite differences in the farming conditions. Determination of 25-OH-D3 in skipjack oil was performed by using HPLC, and the assayed value was 1.8 micrograms/g. This was about 1/800 lower than that of vitamin D3.

Animals↗