Effects of Dietary Vitamin B6Supplementation on Fillet Fatty Acid Composition and Fatty Acid Metabolism of Rainbow Trout Fed Vegetable Oil Based Diets

2012 ◽  
Vol 60 (9) ◽  
pp. 2343-2353 ◽  
Author(s):  
Shyamalie D. Senadheera ◽  
Giovanni M. Turchini ◽  
Thanongsak Thanuthong ◽  
David S. Francis
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Rainbow Trout ◽  
Acid Composition ◽  
Vegetable Oil ◽  
Fatty Acid Metabolism ◽  
Acid Metabolism ◽  
Dietary Vitamin

Effect of fabA and desA Mediated Low Temperature Adaption on Shewanella putrefaciens via Regulation of Unsaturated Fatty Acid Metabolism

2019 ◽  
Vol 11 (10) ◽  
pp. 1430-1437
Author(s):  
Li Chen ◽  
Shengping Yang ◽  
Yunfang Qian ◽  
Jing Xie
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Low Temperature ◽  
Acid Composition ◽  
Fatty Acid Metabolism ◽  
Unsaturated Fatty Acid ◽  
Acid Metabolism ◽  
Shewanella Putrefaciens ◽  
Spoilage Bacteria ◽  
Temperature Environment

Shewanella putrefaciensis a kind of spoilage bacteria in low temperature chilled aquatic products, which seriously threats human health and aquaculture. The fatty acid composition of S. putrefaciens cell membranes has been shown to be involved in adaption of bacteria to various environments. However, the specific fatty acid metabolism of S. putrefaciens to the low temperature environment remains unknown. In this study, the growth of S. putrefaciens, the response of fatty acid composition to low temperature production, and the differential expression and synthesis of enzymes related to unsaturated fatty acid synthesis were investigated by lack of fabA and desA in S. putrefaciens. Results showed that loss of fabA and desA suppressed the growth of S. putrefaciens and reduced unsaturated fatty acid contents at low temperature. In addition, the upregulation of fabA, but not desA resulted in accumulation of unsaturated fatty acid. Up-regulations of fabA and desA both resulted in promotion of GPR41 and Retn gene and protein expressions. These results demonstrated that the deletions of fabA and desA resulted in reduction of unsaturated fatty acid and key downstream genes of fatty acid metabolism, which suggested that unsaturated fatty acid was involved in the adaptations of fabA and desA-mediated S. putrefaciens to the low temperature environment. These results provided a tentative mechanism of the synthesis of unsaturated fatty acids in S. putrefaciens under low temperature conditions.

Analysis of polyunsaturated fatty acid composition of Strongyloides ratti in relation to development

1990 ◽  
Vol 64 (4) ◽  
pp. 303-309 ◽  
Author(s):  
Takeya Minematsu ◽  
Seietsu Yamazaki ◽  
Yoshinori Uji ◽  
Hiroaki Okabe ◽  
Masataka Korenaga ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Linoleic Acid ◽  
Acid Composition ◽  
Polyunsaturated Fatty Acid ◽  
Fatty Acid Metabolism ◽  
Acid Metabolism ◽  
High Ratio ◽  
Free Living

ABSTRACTThe effect of linolenic acid (C18:3ω3) on the development of Strongyloides ratti first-stage larvae (L1) in culture was studied. The fatty acid composition of S. ratti free-living generations was analyzed by gas chromatography. L1 had abundant linoleic acid (C18:2ω6) but its proportion decreased with development. On the contrary, eicosapentaenoic acid (C20:5ω3) and C20:4ω3 were prominent in the filariform larva (L3). Because C20:5ω3 is generally synthesized from C18:3ω3 via C20:4ω3, the high ratio of C20:5ω3/C18:3ω3 of L3 in all the free-living generations suggested that polyunsaturated fatty acid metabolism, particularly the ω-3 series, and eicosanoids produced had important roles in the development of S. ratti L1.

scholarly journals Substituting Fish Oil with Crude Palm Oil in the Diet of Atlantic Salmon (Salmo salar) Affects Muscle Fatty Acid Composition and Hepatic Fatty Acid Metabolism

2002 ◽  
Vol 132 (2) ◽  
pp. 222-230 ◽  
Author(s):  
J. Gordon Bell ◽  
R. James Henderson ◽  
Douglas R. Tocher ◽  
Fiona McGhee ◽  
James R. Dick ◽  
...  
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Atlantic Salmon ◽  
Fish Oil ◽  
Acid Composition ◽  
Salmo Salar ◽  
Palm Oil ◽  
Fatty Acid Metabolism ◽  
Acid Metabolism ◽  
Crude Palm Oil

scholarly journals Effect of long-term strenuous training on the plasma phospholipid fatty acid composition in handball players

2020 ◽  
Vol 77 (8) ◽  
pp. 826-831 ◽  
Author(s):  
Aleksandra Arsic ◽  
Snjezana Petrovic ◽  
Nikola Cikiriz ◽  
Danijela Ristic-Medic ◽  
Vesna Vucic
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Fatty Acid Metabolism ◽  
Acid Metabolism ◽  
Phospholipid Fatty Acid ◽  
Plasma Phospholipid ◽  
Control Group ◽  
Phospholipid Fatty Acid Composition

Background/Aim. Consensus on the exercise effect on the fatty acid metabolism has not been reached, and probably depends on the type of sports (aerobic, anaerobic or mixed). The aim of this study was to investigate effect of long-term handball training on the body composition, lipid profile and the plasma phospholipid fatty acid composition in female and male younger players. Methods. Seventeen female and 15 male active handball players, aged 16?20 years, who competed at the national/international level, were enrolled in the study. A control group was established from healthy, sedentary individuals (13 females and 19 males, aged 17?21 years), comparable to the athletes in terms of age, sex and body mass index. Results. In both groups of handball players a higher percentage of palmitoleic acid and alpha linolenic acid (18:3, n-3), were found and lower percentage of oleic acid and docosahexaenoic acid (22:6, n-3), when compared with corresponding control group. On the other hand, the lower level of stearic acid and estimated activity of plasma elongase was detected in female players than in sedentary women. Furthermore, higher proportion of linoleic acid (18:2, n-6), n-6 polyunsaturated fatty acids (PUFA) and total PUFA was found only in female players in comparison to the control group. Conclusion. The observed differences between handball players and sedentary individuals showed that handball training influenced lipid and fatty acid metabolism. Follow-up of these changes could indicate potential need for supplementation or nutritional intervention in young handball players.

scholarly journals Expression analysis of porcine miR-33a/b in liver, adipose tissue and muscle and its potential role in fatty acid metabolism

PLoS ONE ◽  
2021 ◽  
Vol 16 (1) ◽  
pp. e0245858
Author(s):  
Lourdes Criado-Mesas ◽  
Maria Ballester ◽  
Daniel Crespo-Piazuelo ◽  
Magí Passols ◽  
Anna Castelló ◽  
...  
Keyword(s):  
Adipose Tissue ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Lipid Metabolism ◽  
Acid Composition ◽  
Expression Analysis ◽  
Fatty Acid Metabolism ◽  
In Silico ◽  
Acid Metabolism

mir-33a and mir-33b are co-transcribed with the SREBF2 and SREBF1 transcription factors, respectively. The main role of SREBF1 is the regulation of genes involved in fatty acid metabolism, while SREBF2 regulates genes participating in cholesterol biosynthesis and uptake. Our objective was to study the expression of both miR-33a and miR-33b, together with their host SREBF genes, in liver, adipose tissue and muscle to better understand the role of miR-33a/b in the lipid metabolism of pigs. In our study, the expression of miR-33a, miR-33b and SREBF2 in liver, adipose tissue, and muscle was studied in 42 BC1_LD (25% Iberian x 75% Landrace backcross) pigs by RT-qPCR. In addition, the expression of in-silico predicted target genes and fatty acid composition traits were correlated with the miR-33a/b expression. We observed different tissue expression patterns for both miRNAs. In adipose tissue and muscle a high correlation between miR-33a and miR-33b expression was found, whereas a lower correlation was observed in liver. The expression analysis of in-silico predicted target-lipid related genes showed negative correlations between miR-33b and CPT1A expression in liver. Conversely, positive correlations between miR-33a and PPARGC1A and USF1 gene expression in liver were observed. Lastly, positive and negative correlations between miR-33a/b expression and saturated fatty acid (SFA) and polyunsaturated fatty acid (PUFA) content, respectively, were identified. Overall, our results suggested that both miRNAs are differentially regulated and have distinct functions in liver, in contrast to muscle and adipose tissue. Furthermore, the correlations between miR-33a/b expression both with the expression of in-silico predicted target-lipid related genes and with fatty acid composition, opens new avenues to explore the role of miR33a/b in the regulation of lipid metabolism.

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