A novel method for the quantification of long-chain omega-3 polyunsaturated fatty acids (PUFA) in gummy dietary supplements

2017 ◽  
Vol 56 ◽  
pp. 1-10 ◽  
Author(s):  
Ziyi Li ◽  
Cynthia T. Srigley
Keyword(s):  
Fatty Acids ◽  
Polyunsaturated Fatty Acids ◽  
Dietary Supplements ◽  
Omega 3 ◽  
Novel Method ◽  
Long Chain

scholarly journals Seawater Culture Increases Omega-3 Long-Chain Polyunsaturated Fatty Acids (N-3 LC-PUFA) Levels in Japanese Sea Bass (Lateolabrax japonicus), Probably by Upregulating Elovl5

Animals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1681
Author(s):  
Xiaojing Dong ◽  
Jianqiao Wang ◽  
Peng Ji ◽  
Longsheng Sun ◽  
Shuyan Miao ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Polyunsaturated Fatty Acids ◽  
Sea Bass ◽  
Transcript Abundance ◽  
Omega 3 ◽  
Freshwater Pond ◽  
Cultured Fish ◽  
Long Chain ◽  
Japanese Sea Bass

The fatty acid compositions of the fish muscle and liver are substantially affected by rearing environment. However, the mechanisms underlying this effect have not been thoroughly described. In this study, we investigated the effects of different culture patterns, i.e., marine cage culture and freshwater pond culture, on long-chain polyunsaturated fatty acids (LC-PUFA) biosynthesis in an aquaculturally important fish, the Japanese sea bass (Lateolabrax japonicus). Fish were obtained from two commercial farms in the Guangdong province, one of which raises Japanese sea bass in freshwater, while the other cultures sea bass in marine cages. Fish were fed the same commercial diet. We found that omega-3 long-chain polyunsaturated fatty acids (n-3 LC-PUFA) levels in the livers and muscles of the marine cage cultured fish were significantly higher than those in the livers and muscles of the freshwater pond cultured fish. Quantitative real-time PCRs indicated that fatty acid desaturase 2 (FADS2) transcript abundance was significantly lower in the livers of the marine cage reared fish as compared to the freshwater pond reared fish, but that fatty acid elongase 5 (Elovl5) transcript abundance was significantly higher. Consistent with this, two of the 28 CpG loci in the FADS2 promoter region were heavily methylated in the marine cage cultured fish, but were only slightly methylated in freshwater pond cultured fish (n = 5 per group). Although the Elovl5 promoter was less methylated in the marine cage reared fish as compared to the freshwater pond reared fish, this difference was not significant. Thus, our results might indicate that Elovl5, not FADS2, plays an important role in the enhancing LC-PUFA synthesis in marine cage cultures.

scholarly journals Experimental reduction in dietary omega-3 polyunsaturated fatty acids depresses sperm competitiveness

2014 ◽  
Vol 10 (9) ◽  
pp. 20140623 ◽  
Author(s):  
Md. Moshiur Rahman ◽  
Clelia Gasparini ◽  
Giovanni M. Turchini ◽  
Jonathan P. Evans
Keyword(s):  
Fatty Acids ◽  
Sexual Selection ◽  
Polyunsaturated Fatty Acids ◽  
Dietary Intake ◽  
Poecilia Reticulata ◽  
Reproductive Fitness ◽  
Omega 3 ◽  
Adequate Intake ◽  
Abundant Evidence ◽  
Long Chain

The health benefits of diets containing rich sources of long-chain omega-3 polyunsaturated fatty acids (n-3 LC-PUFA) are well documented and include reductions in the risk of several diseases typical of Western societies. The dietary intake of n-3 LC-PUFA has also been linked to fertility, and there is abundant evidence that a range of ejaculate traits linked to fertility in humans, livestock and other animals depend on an adequate intake of n-3 LC-PUFA from dietary sources. However, relatively few studies have explored how n-3 LC-PUFA influence reproductive fitness, particularly in the context of sexual selection. Here, we show that experimental reduction in the level of n-3 LC-PUFA in the diet of guppies ( Poecilia reticulata ) depresses a male's share of paternity when sperm compete for fertilization, confirming that the currently observed trend for reduced n-3 LC-PUFA in western diets has important implications for individual reproductive fitness.

scholarly journals Correction: Howe et al. “Effects of Long Chain Omega-3 Polyunsaturated Fatty Acids on Brain Function in Mildly Hypertensive Older Adults” Nutrients 2018, 10, 1413

Nutrients ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 1043
Author(s):  
Peter R. C. Howe ◽  
Hamish M. Evans ◽  
Julia C. Kuszewski ◽  
Rachel H. X. Wong
Keyword(s):  
Older Adults ◽  
Fatty Acids ◽  
Polyunsaturated Fatty Acids ◽  
Brain Function ◽  
Omega 3 ◽  
Long Chain

The authors wish to make a correction to the published version of their paper [...]

scholarly journals Omega-3 Long-Chain Polyunsaturated Fatty Acids Intake in Children: The Role of Family-Related Social Determinants

Nutrients ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 3455
Author(s):  
María Isabel Martínez-Martínez ◽  
Antoni Alegre-Martínez ◽  
Omar Cauli
Keyword(s):  
Fatty Acids ◽  
Polyunsaturated Fatty Acids ◽  
Essential Elements ◽  
Omega 3 ◽  
Dietary Interventions ◽  
Low Frequencies ◽  
Public Health Agencies ◽  
Lean Fish ◽  
Work Done ◽  
Long Chain

Omega-3 long-chain polyunsaturated fatty acids play a central role in neuronal growth and in the development of the human brain, since they are essential elements which depend on intake through diet to ensure an adequate amount. Fish and seafood are the main dietary sources of these fatty acids in Spain and in other countries. In order to assess the effect of the intake of common foods containing high amounts of omega-3 polyunsaturated fatty acids, a food frequency questionnaire was administered to parents of children and adolescents attending a primary school in Valencia (Spain), and the intake of dietary omega-3 such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) was estimated based on their fish/seafood consumption. Low frequencies of intake were significantly (p < 0.05) lower for many types of fish/seafood in children compared to adolescents. 27.5% of children/adolescents did not eat lean fish or other types (19.8% of the sample did not eat fatty fish, and 71.8% did not eat smoked fish) and 20–60% of the sample consumed seafood only once–three times a month, leading to a reduced estimated intake of EPA+DHA below that recommended for both groups by public health agencies. Social aspects, such as the type of work done by mothers and their educational levels are significant factors (p < 0.05 in both cases) affecting children’s/adolescents’ intake of DHA+EPA. Dietary interventions to increase the consumption of fish and seafood are strongly advised, and health promotion strategies should be aimed at the family level and fight against gender disparities.

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