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Registros recuperados: 6
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Fatty acid profile in vertical strata of elephant grass subjected to intermittent stocking Anais da ABC (AABC)
DIAS,KAMILA M.; SCHMITT,DANIEL; RODOLFO,GISELLE R.; DESCHAMPS,FRANCISCO C.; CAMARGO,GUILHERME N.; PEREIRA,RAPHAEL S.; SBRISSIA,ANDRÉ F..
ABSTRACT The milk and meat from animals with a pasture-based diet have higher proportions of CLA and C18:3 and lower omega-6:omega-3 ratios than products from animals with diets based on corn silage and concentrate. However, most of the published studies have evaluated fatty acid profiles in temperate climate grasses and the literature with tropical grasses is scarce. Thus, the aim of this study was to evaluate the morphological and fatty acid compositions in the vertical strata of elephant grass (Pennisetum purpureum Schum.) swards subjected to grazing heights (90 or 120 cm pre-grazing heights) and levels of defoliation (50% or 70% removal of the initial pre-grazing height). There were no interactions among pre-grazing height, the level of defoliation and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Linolenic acid; Pennisetum purpureum Schum; Polyunsaturated fatty acid; Tropical forage.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000401707
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Immunoregulatory and anti-inflammatory effects of n-3 polyunsaturated fatty acids BJMBR
Calder,P.C..
1. Fish oils are rich in the long-chain n-3 polyunsaturated fatty acids (PUFAs), eicosapentaenoic (20:5n-3) and docosahexaenoic (22:6n-3) acids. Linseed oil and green plant tissues are rich in the precursor fatty acid, <FONT FACE="Symbol">a</font>-linolenic acid (18:3n-3). Most vegetable oils are rich in the n-6 PUFA linoleic acid (18:2n-6), the precursor of arachidonic acid (20:4n-6). 2. Arachidonic acid-derived eicosanoids such as prostaglandin E2 are pro-inflammatory and regulate the functions of cells of the immune system. Consumption of fish oils leads to replacement of arachidonic acid in cell membranes by eicosapentaenoic acid. This changes the amount and alters the balance of eicosanoids produced. 3. Consumption of fish oils diminishes...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lymphocyte; Macrophage; Immune system; Inflammation; Fish oil; Polyunsaturated fatty acid; Cytokine; Eicosanoid.
Ano: 1998 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1998000400002
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Long-chain n-3 fatty acids and inflammation: potential application in surgical and trauma patients BJMBR
Calder,P.C..
Lipids used in nutritional support of surgical or critically ill patients have been based on soybean oil, which is rich in the n-6 fatty acid linoleic acid (18:2n-6). Linoleic acid is the precursor of arachidonic acid (20:4n-6). In turn, arachidonic acid in cell membrane phospholipids is the substrate for the synthesis of a range of biologically active compounds (eicosanoids) including prostaglandins, thromboxanes, and leukotrienes. These compounds can act as mediators in their own right and can also act as regulators of other processes, such as platelet aggregation, blood clotting, smooth muscle contraction, leukocyte chemotaxis, inflammatory cytokine production, and immune function. There is a view that an excess of n-6 fatty acids should be avoided...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Polyunsaturated fatty acid; Fish oil; Inflammation; Eicosanoid; Cytokine; Critical illness.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003000400004
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Nitrogen and phosphorus limitations induce carbon partitioning and membrane lipid remodelling in the marine diatom Phaeodactylum tricornutum ArchiMer
Huang, Bing; Marchand, Justine; Blanckaert, Vincent; Lukomska, Ewa; Ulmann, Lionel; Wielgosz-collin, Gaëtane; Rabesaotra, Vony; Moreau, Brigitte; Bougaran, Gael; Mimouni, Virginie; Morant-manceau, Annick.
Nitrogen (N) and phosphorus (P) limitations induce triacylglycerol (TAG) accumulation and membrane lipid remodelling in the marine diatom Phaeodactylum tricornutum. However, a clear understanding of the metabolic reorientation is still lacking. Carbon partitioning is of great interest because this microalga produces various highly valuable molecules such as lipids and polyunsaturated fatty acids. This study compared growth, photosynthetic activity, biochemical and transcriptional responses of P. tricornutum throughout batch culture under N or P limitation. The integrated results show that the photosynthetic intensity was greatly reduced under N or P limitation. Under N limitation, the degradation and re-use of cellular N-containing compounds contributed to...
Tipo: Text Palavras-chave: Betaine lipid; Lipid remodelling; Microalga; Nitrogen; Phosphorus; Polyunsaturated fatty acid.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00491/60249/63861.pdf
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Specific fatty acids as metabolic modulators in the dairy cow R. Bras. Zootec.
Pires,J.A.A.; Grummer,R.R..
This review summarizes recent developments on the utilization of specific fatty acids to modulate bovine energy metabolism, with emphasis on the periparturient dairy cow. A number of experiments have assessed the effects of polyunsaturated fatty acids on bovine hepatic energy metabolism using in vitro and in vivo models. Treatment of hepatocytes with specific fatty acids altered energy metabolism in vitro. For example, linolenic acid seemed to decrease hepatocyte triacylglycerol accumulation. This effect was confirmed in vivo, using parenteral infusions of emulsions derived from different fat sources to feed-restricted non-lactating cows. Additionally, polyunsaturated fatty acids can increase whole body response to insulin, potentially enhancing...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bovine; CLA; Linseed; Fish oil; Metabolism; Polyunsaturated fatty acid.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982008001300033
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Use of conjugated linoleic acid (trans 10, cis 12) to cultivate bovine embryos: effect on cryoresistance and lipid content R. Bras. Zootec.
Carvalho,Bruno Pena; Costa,Fernanda de Queirós; Detoni,Danielly; Rosa,Felipe Borges; Dias,Angelo José Burla.
ABSTRACT This study evaluated the effect of the addition of conjugated linoleic acid (CLA) to in vitro culture on viability, lipid content, and cryoresistance of bovine embryos at different in vitro culture times. Cumulus oocyte complexes (N = 974) were maturated in vitro for 22 h. In vitro fecundation ensued for 18 h. Viable zygotes were cultivated in vitro in medium supplemented with CLA (100 mM) in the first 72 h (CLA-F), last 72 h (CLA-L), or throughout the culture period (CLA-T). Control embryos (control) were cultivated with no CLA. Embryos were cryopreserved by vitrification for subsequent analysis after devitrification. Effect of CLA on cryoresistance was assessed by cultivating embryos in synthetic oviductal fluid containing 5% fetal bovine serum....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cryotolerance; Polyunsaturated fatty acid; Vitrification.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100602
Registros recuperados: 6
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