scholarly journals SEASONAL DYNAMICS OF FATTY ACIDS COMPOSITION IN TISSUE OF RAINBOW TROUT PARASALMO MYKISS (WALBAUM, 1792), CULTIVATED ON VARIOUS DIETS

2018 ◽  
pp. 104-113
Author(s):  
Olga Borisovna Vasilieva ◽  
Marina Aleksandrovna Nazarova ◽  
Nina Nikolaevna Nemova
Keyword(s):  
Fatty Acids ◽  
Rainbow Trout ◽  
Polyunsaturated Fatty Acids ◽  
Seasonal Changes ◽  
Slow Rate ◽  
Dietary Fatty Acids ◽  
Trophic Factor ◽  
Parasalmo Mykiss ◽  
High Degree ◽  
Long Chain

A comparative study of the composition of fatty acids in muscles, liver and internal fat in rainbow trout Parasalmo mykiss (Walbaum, 1792) grown on various diets in the period from April to July was effected. Differences in content of dietary fatty acids in diet 1 and diet 2 were found. A significantly lower level of long-chain polyunsaturated fatty acids (including physiologically significant eicosapentaenoic 20: 5(n-3) and docosapentaenoic 22: 6(n-3) acids) was detected in diet № 2, compared to diet № 1. As a result, deficiency of dietary eicosapentaenoic and docosapentaenoic acids leads to a slow rate of fishes growth. A significant influence of the trophic factor on the distribution of fatty acids in muscles and internal fat of fish is shown, because lipids in rainbow trout accumulate in these tissues. The degree of accumulation of different dietary fatty acids in muscles and internal fat of trout was depended on fatty acids that prevailed in the diet on which the rainbow trout was grown. A high degree of influence of the trophic factor on the level of polyunsaturated fatty acids of families n-9 and n-4 was found, the content of which in trout tissues was about 1%. Composition of fatty acids in trout liver, as the most metabolically active organ, is less conditioned by the influence of the factors studied. The degree of assimilation of docosahexaenoic 22: 6 (n-3) acid in rainbow trout probably depended on the level of eicosapentaenoic 20: 5 (n-3) acid in the diet. It has been stated that changing the level of fatty acids in muscles and internal fat of trout during seasonal changes is associated with an increase in the frequency of feeding of fishes in the summer.

Maternal Dietary Fatty Acids and Their Relationship to Derived Endocannabinoids in Human Milk

2021 ◽  
pp. 089033442199346
Author(s):  
Adriana V. Gaitán ◽  
JodiAnne T. Wood ◽  
Yingpeng Liu ◽  
Lipin Ji ◽  
Spyros P. Nikas ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Docosahexaenoic Acid ◽  
Polyunsaturated Fatty Acids ◽  
Human Milk ◽  
Dietary Intake ◽  
Infant Development ◽  
Infant Health ◽  
Dietary Fatty Acids ◽  
Future Research ◽  
Long Chain

Background Dietary long-chain polyunsaturated fatty acids are known to benefit infant development. After birth, human milk provides arachidonic, eicosapentaenoic, and docosahexaenoic acids to the infant. Endocannabinoids are endogenous lipid mediators derived from the long-chain polyunsaturated fatty acids. Although the roles and the mechanisms of action are not fully understood, previous researchers have suggested that endocannabinoids might play a role in infant feeding behavior. Research Aims To assess (i) maternal dietary intake of long-chain polyunsaturated fatty acids and (ii) their relationship to concentrations of fatty acids and derived endocannabinoids in human milk. Methods For this exploratory-longitudinal study, participants ( N = 24) provided dietary intake data and milk samples. Fatty acids and derived endocannabinoids: Arachidonylethanolamide, arachidonoylglycerol, docosahexaenoyl glycerol, eicosapentaenoyl ethanolamide, and eicosapenaenoyl glycerol were identified in their milk by liquid chromatography-mass spectrometry and correlations to dietary fatty acids were assessed. Results Participants were not consuming recommended amounts of docosahexaenoic acid. Significant correlations ( p ≤ .05) were only found between dietary docosahexaenoic and eicosapentaenoic acids and the concentrations of these in human milk. Moreover, only dietary docosahexaenoic acid was correlated ( p = .031) with its corresponding endocannabinoid, docosahexaenoyl glycerol. Conclusions To the best of our knowledge, this may be one of the first studies evaluating relationships between dietary long-chain polyunsaturated fatty acids and multiple endocannabinoids in human milk. Our findings suggest that endocannabinoid concentrations could be modulated by dietary precursors. Future research studies can be designed based on these data to better elucidate the roles of endocannabinoids in human milk for infant health and development.

scholarly journals Membrane fluidity is regulated by the C. elegans transmembrane protein FLD-1 and its human homologs TLCD1/2

eLife ◽  
2018 ◽  
Vol 7 ◽  
Author(s):  
Mario Ruiz ◽  
Rakesh Bodhicharla ◽  
Emma Svensk ◽  
Ranjan Devkota ◽  
Kiran Busayavalasa ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Polyunsaturated Fatty Acids ◽  
Membrane Fluidity ◽  
Polyunsaturated Fatty Acid ◽  
Dietary Fatty Acids ◽  
Editorial Note ◽  
Membrane Phospholipids ◽  
C Elegans ◽  
Long Chain

Dietary fatty acids are the main building blocks for cell membranes in animals, and mechanisms must therefore exist that compensate for dietary variations. We isolated C. elegans mutants that improved tolerance to dietary saturated fat in a sensitized genetic background, including eight alleles of the novel gene fld-1 that encodes a homolog of the human TLCD1 and TLCD2 transmembrane proteins. FLD-1 is localized on plasma membranes and acts by limiting the levels of highly membrane-fluidizing long-chain polyunsaturated fatty acid-containing phospholipids. Human TLCD1/2 also regulate membrane fluidity by limiting the levels of polyunsaturated fatty acid-containing membrane phospholipids. FLD-1 and TLCD1/2 do not regulate the synthesis of long-chain polyunsaturated fatty acids but rather limit their incorporation into phospholipids. We conclude that inhibition of FLD-1 or TLCD1/2 prevents lipotoxicity by allowing increased levels of membrane phospholipids that contain fluidizing long-chain polyunsaturated fatty acids.Editorial note: This article has been through an editorial process in which the authors decide how to respond to the issues raised during peer review. The Reviewing Editor's assessment is that all the issues have been addressed (<xref ref-type="decision-letter" rid="SA1">see decision letter</xref>).

scholarly journals Rainbow trout prefer diets rich in omega-3 long chain polyunsaturated fatty acids DHA and EPA

2020 ◽  
Vol 213 ◽  
pp. 112692 ◽  
Author(s):  
Jérôme Roy ◽  
Yvan Mercier ◽  
Lenny Tonnet ◽  
Christine Burel ◽  
Anthony Lanuque ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Rainbow Trout ◽  
Polyunsaturated Fatty Acids ◽  
Omega 3 ◽  
Long Chain

scholarly journals Characterization and modulation of brain lipids content of rainbow trout fed with 100% plant based diet rich in omega-3 long chain polyunsaturated fatty acids DHA and EPA

Biochimie ◽  
2020 ◽  
Vol 178 ◽  
pp. 137-147
Author(s):  
Jérôme Roy ◽  
Claire Vigor ◽  
Joseph Vercauteren ◽  
Guillaume Reversat ◽  
Bingqing Zhou ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Rainbow Trout ◽  
Polyunsaturated Fatty Acids ◽  
Omega 3 ◽  
Brain Lipids ◽  
Long Chain

scholarly journals Impact on cerebral function in rainbow trout fed with plant based omega-3 long chain polyunsaturated fatty acids enriched with DHA and EPA

2020 ◽  
Vol 103 ◽  
pp. 409-420 ◽  
Author(s):  
Jérôme Roy ◽  
Laurence Larroquet ◽  
Anne Surget ◽  
Anthony Lanuque ◽  
Franck Sandres ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Rainbow Trout ◽  
Polyunsaturated Fatty Acids ◽  
Omega 3 ◽  
Cerebral Function ◽  
Long Chain

Postprandial Activation of Coagulant Factor VII by Long-chain Dietary Fatty Acids

1996 ◽  
Vol 76 (03) ◽  
pp. 369-371 ◽  
Author(s):  
T A B Sanders ◽  
G J Miller ◽  
Tamara de Grassi ◽  
Najat Yahia
Keyword(s):  
Fatty Acids ◽  
Dietary Fatty Acids ◽  
Factor Vii ◽  
Fat Intake ◽  
Long Chain Fatty Acids ◽  
Postprandial Lipaemia ◽  
Increased Risk ◽  
Coagulant Activity ◽  
Long Chain Triglycerides ◽  
Long Chain

SummaryFactor VII coagulant activity (FVIIc) is associated with an increased risk of fatal ischaemic heart disease (IHD). Several reports have suggested that dietary fat intake or hypertriglyceridaemia are associated with elevated levels of FVII. This study demonstrates that an intake of long-chain fatty acids sufficient to induce postprandial lipaemia in healthy subjects leads to a substantial elevation in both FVIIc and the concentration of FVII circulating in the activated form. Such an increase in FVIIc could not be induced by medium-chain triglycerides. These results suggest that the consumption of a sufficient amount of long-chain triglycerides to induce postprandial lipaemia induces the activation of FVII.

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