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Alpha-linoleic acid

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https://www.readbyqxmd.com/read/29452256/modulation-of-oxidative-stress-response-by-flaxseed-oil-role-of-lipid-peroxidation-and-underlying-mechanisms
#1
REVIEW
Rajnish Kumar Yadav, Manjari Singh, Subhadeep Roy, Mohd Nazam Ansari, Abdulaziz S Saeedan, Gaurav Kaithwas
Polyunsaturated fatty acids (PUFA's) are majorly classified as ω-3 and ω-6 fatty acids. The eicosapentaenoic acid (EPA, ω-3:20-5), docosahexaenoic acid (DHA, ω-3:22-6) and alpha-linolenic acid (ALA, ω-3:18-3) are known ω-3 fatty acids, extracted from animal (e.g fish oil) and plant sources (e.g flaxseed oil). Furthermore, linoleic acid (LA, ω-6:18-2) is recognized as ω-6 fatty acid and the most prominent biological fatty acid with a pro-inflammatory response. Flaxseed oil has variety of biological roles, due to a significant amount of ω-3/ω-6 fatty acids...
February 13, 2018: Prostaglandins & Other Lipid Mediators
https://www.readbyqxmd.com/read/29413364/arachidonic-acid-supplementation-modulates-blood-and-skeletal-muscle-lipid-profile-with-no-effect-on-basal-inflammation-in-resistance-exercise-trained-men
#2
James F Markworth, Cameron J Mitchell, Randall F D'Souza, Kirsten M M Aasen, Brenan R Durainayagam, Sarah M Mitchell, Alex H C Chan, Andrew J Sinclair, Manohar Garg, David Cameron-Smith
Arachidonic acid (ARA), an omega-6 polyunsaturated fatty acid (PUFA), is the metabolic precursor to the eicosanoid family of lipid mediators. Eicosanoids have potent pro-inflammatory actions, but also act as important autocrine/paracrine signaling molecules in skeletal muscle growth and development. Whether dietary ARA is incorporated into skeletal muscle phospholipids and the resulting impact on intramuscular inflammatory and adaptive processes in-vivo is not known. In the current study, resistance trained men (≥1 year) received dietary supplementation with 1...
January 2018: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/29407798/environmentally-realistic-concentration-of-cadmium-combined-with-polyunsaturated-fatty-acids-enriched-diets-modulated-non-specific-immunity-in-rainbow-trout
#3
Valérie Cornet, Abderrahim Ouaach, S N M Mandiki, Enora Flamion, Aline Ferain, Mélusine Van Larebeke, Benjamin Lemaire, Felipe E Reyes López, Lluis Tort, Yvan Larondelle, Patrick Kestemont
Nutrition is crucial to grow healthy fish particularly in a context of pollution, overcrowding and pathogen risks. Nowadays, the search for food components able to improve fish health is increasingly developing. Here, the influence of four dietary polyunsaturated fatty acids (PUFAs) that are alpha-linolenic acid (ALA, 18:3n-3), linoleic acid (LA, 18:2n-6), eicosapentaenoic acid (EPA, 20:5n-3) and docosahexaenoic acid (DHA, 22:6n-3) on the sensitivity of rainbow trout (Oncorhynchus mykiss) juveniles to environmentally realistic cadmium (Cd, 0...
February 1, 2018: Aquatic Toxicology
https://www.readbyqxmd.com/read/29393106/circulating-polyunsaturated-fatty-acids-as-biomarkers-for-dietary-intake-across-subgroups-the-codam-and-hoorn-studies
#4
Anne J Wanders, Marjan Alssema, Sabine E M De Hoon, Edith J M Feskens, Geertruida J van Woudenbergh, Carla J van der Kallen, Peter L Zock, Helga Refsum, Christian A Drevon, Amany Elshorbagy, Casper G Schalkwijk, Coen D A Stehouwer, Jacqueline M Dekker, Marleen M J van Greevenbroek
AIMS: To evaluate whether participant characteristics and way of expressing circulating fatty acids (FA) influence the strengths of associations between self-reported intake and circulating levels of linoleic acid (LA), alpha-linolenic acid (ALA), eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA). METHODS: Cross-sectional analyses were performed in pooled data from the CODAM (n = 469) and Hoorn (n = 702) studies. Circulating FA were measured by gas liquid chromatography and expressed as proportions (% of total FA) and concentrations (µg/mL)...
January 25, 2018: Annals of Nutrition & Metabolism
https://www.readbyqxmd.com/read/29387383/nutritional-physicochemical-and-functional-properties-of-protein-concentrate-and-isolate-of-newly-developed-bambara-groundnut-vigna-subterrenea-l-cultivars
#5
Olaposi R Adeleke, Oladipupo Q Adiamo, Olumide S Fawale
Bambara groundnut is an indigenous African vegetable grown mainly for human food and animal feed due to its high protein content. Different factors like varieties and origin can influence the chemical composition of Bambara groundnut cultivars. Therefore, the aims of this study are to produce defatted flour and protein concentrate from newly developed Bambara groundnut cultivars [Accessions No: TVSU 5 - Bambara Groundnut White (BGW) and TVSU 146 - Bambara Groundnut Brown (BGB)] and compare their nutritional, physicochemical, and functional properties with market sample [Bambara groundnut commercial (BGC)]...
January 2018: Food Science & Nutrition
https://www.readbyqxmd.com/read/29331744/urinary-metabolomics-study-the-mechanism-of-taohong-siwu-decoction-intervention-in-acute-blood-stasis-model-rats-based-on-liquid-chromatography-coupled-to-quadrupole-time-of-flight-mass-spectrometry
#6
Xiaosong Zhang, Pengling Li, Yongli Hua, Peng Ji, Wanling Yao, Qi Ma, Ziwen Yuan, Yanqiao Wen, Chaoxue Yang, Yanming Wei
Taohong Siwu Decoction (TSD) is a classic prescription in traditional Chinese medicine and is widely used to promote blood circulation to remove blood stasis. However, the effect mechanisms are not yet well understood. Here, a urinary metabolomic approach based on liquid chromatography coupled to quadrupole time-of-flight mass spectrometry (LC/Q-TOF-MS) was conducted to explore the changes in the endogenous metabolites and to assess the integral efficacy of TSD on acute blood stasis model rats. Then, parameters for hemorheology and coagulation functions were detected...
January 2, 2018: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/29315663/circulating-25-hydroxyvitamin-d-nasopharyngeal-airway-metabolome-and-bronchiolitis-severity
#7
Kohei Hasegawa, Christopher J Stewart, Juan C Celedón, Jonathan M Mansbach, Courtney Tierney, Carlos A Camargo
Low circulating 25-hydroxyvitamin D (25OHD) levels are a risk factor for acute respiratory infection (e.g., bronchiolitis) in children. However, little is known about the relation of circulating 25OHD with the many downstream functional molecules in target organs - such as the airway - and with clinical outcomes. In this prospective multicenter study of infants (age <1 year) hospitalized with bronchiolitis, we measured serum 25OHD levels and profiled the metabolome of 144 nasopharyngeal airway samples. Among 254 metabolites identified, we defined a set of 20 metabolites that are related to lower serum 25OHD and higher vitamin D-binding protein levels...
January 9, 2018: Allergy
https://www.readbyqxmd.com/read/29304057/long-chain-omega-3-polyunsaturated-fatty-acid-dietary-intake-is-positively-associated-with-bone-mineral-density-in-normal-and-osteopenic-spanish-women
#8
Jesus Lavado-García, Raul Roncero-Martin, Jose M Moran, Maria Pedrera-Canal, Ignacio Aliaga, Olga Leal-Hernandez, Sergio Rico-Martin, Maria L Canal-Macias
The regular consumption of long-chain omega-3 polyunsaturated fatty acids (LCO3-PUFAs) results in general health benefits. The intake of LCO3-PUFAs has been reported to contribute to bone metabolism. We aimed to investigate the relationships between dietary intakes of LCO3-PUFAs and bone mineral density (BMD) in Spanish women aged 20-79 years old. A total of 1865 female subjects (20-79 years old) were enrolled, and lumbar (L2, L3, L3 and total spine), hip (femoral neck (FN), femoral trochanter (FT) and Ward's triangle (WT)) bone mineral density (BMD) were measured by dual energy X-ray absorptiometry (DXA)...
2018: PloS One
https://www.readbyqxmd.com/read/29288354/functional-characterization-and-substrate-specificity-analysis-of-%C3%AE-6-desaturase-from-marine-microalga-isochrysis-sp
#9
S Thiyagarajan, M Arumugam, N Senthil, S Vellaikumar, S Kathiresan
OBJECTIVES: To express a Δ6-desaturase gene and produce gamma-linolenic acid (GLA) and stearidonic acid (SDA) in prokaryotic expression system (Escherichia coli), and analyze its substrate specificity in the omega-3 fatty acid biosynthetic pathway. RESULTS: Full-length ORF (1448 bp) of Δ6Des-Iso was isolated from Isochrysis sp. and characterized using multiple sequence alignment, phylogenetic analysis, transmembrane domain, and protein tertiary structure. Δ6Des-Iso is a front-end desaturase consisting of three conserved histidine domains and a cytochrome b5 domain...
December 29, 2017: Biotechnology Letters
https://www.readbyqxmd.com/read/29204449/combined-transcriptomic-analysis-revealed-akr1b10-played-an-important-role-in-psoriasis-through-the-dysregulated-lipid-pathway-and-overproliferation-of-keratinocyte
#10
Yunlu Gao, Xuemei Yi, Yangfeng Ding
RNA-seq has enabled in-depth analysis of the pathogenesis of psoriasis on the transcriptomic level, and many biomarkers have been discovered to be related to the immune response, lipid metabolism, and keratinocyte proliferation. However, few studies have combined analysis from various datasets. In this study, we integrated different psoriasis RNA-seq datasets to reveal the pathogenesis of psoriasis through the analysis of differentially expressed genes (DEGs), pathway analysis, and functional annotation. The revealed biomarkers were further validated through proliferation phenotypes...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29146138/development-of-kidney-transplant-fibrosis-is-inversely-associated-with-plasma-marine-fatty-acid-level
#11
Ivar A Eide, Christina Dörje, My Svensson, Trond Jenssen, Clara Hammarstrøm, Helge Scott, Kristian S Bjerve, Jeppe H Christensen, Erik B Schmidt, Anders Hartmann, Anders Åsberg, Anna V Reisæter, Finn P Reinholt
OBJECTIVE(S): We assessed associations between plasma levels of polyunsaturated fatty acids (PUFAs) and degree of inflammation and interstitial fibrosis in transplanted kidneys. DESIGN: The design of the study was single center cohort study. SUBJECTS: A study population of 156 patients who received a kidney transplant at Oslo University Hospital during 2010. MAIN OUTCOME MEASURE: Kidney transplant biopsies were obtained at 2 months and 1 year after transplantation...
November 14, 2017: Journal of Renal Nutrition
https://www.readbyqxmd.com/read/29080057/sex-differences-in-blood-hdl-c-the-total-cholesterol-hdl-c-ratio-and-palmitoleic-acid-are-not-associated-with-variants-in-common-candidate-genes
#12
Shannon L Klingel, Kaitlin Roke, Bertha Hidalgo, Stella Aslibekyan, Robert J Straka, Ping An, Michael A Province, Paul N Hopkins, Donna K Arnett, Jose M Ordovas, Chao-Qiang Lai, David M Mutch
Blood lipids are associated with cardiovascular disease (CVD) risk. Moreover, circulating lipid and fatty acid levels vary between men and women, and evidence demonstrates these traits may be influenced by single nucleotide polymorphisms (SNP). Sex-genotype interactions related to blood lipids and fatty acids have been poorly investigated and may help elucidate sex differences in CVD risk. The goal of this study was to investigate if the influence of SNPs previously associated with blood lipids and fatty acids varies in a sex-specific manner...
December 2017: Lipids
https://www.readbyqxmd.com/read/28934766/new-zealand-women-have-suboptimal-intakes-of-long-chain-omega-3-polyunsaturated-fatty-acids-during-pregnancy-a-cross-sectional-study
#13
Michele Eickstaedt, Kathryn L Beck, Cathryn A Conlon
AIM: To investigate dietary intakes and food sources of polyunsaturated fatty acids in New Zealand pregnant women. METHOD: Women (n=596) 16 years plus in trimester three of pregnancy completed an online food frequency questionnaire validated for omega-3 and omega-6 polyunsaturated fatty acids. RESULTS: Estimated median [25th, 75th percentile] intakes of omega-3 polyunsaturated fatty acids were: 1,300 [790, 2,120] mg/d alpha-linolenic acid (adequate intake 1,000mg/d); 220 [120, 520] mg/d total long chain omega-3 polyunsaturated fatty acids (adequate intake 115mg/d); and 110 [50, 250] mg/d docosahexaenoic acid (recommended 200mg/d)...
September 22, 2017: New Zealand Medical Journal
https://www.readbyqxmd.com/read/28899689/enhanced-expression-of-genes-related-to-xenobiotic-metabolism-in-the-skin-of-patients-with-atopic-dermatitis-but-not-with-ichthyosis-vulgaris
#14
Stefan Blunder, Sulev Kõks, Gea Kõks, Ene Reimann, Hubert Hackl, Robert Gruber, Verena Moosbrugger-Martinz, Matthias Schmuth, Sandrine Dubrac
Previous transcriptome analyses underscored the importance of immunological and skin barrier abnormalities in atopic dermatitis (AD). We sought to identify novel pathogenic pathways involved in AD by comparing the transcriptomes of AD patients stratified for filaggrin (FLG) null mutations to those of both healthy donors and patients with ichthyosis vulgaris (IV). We applied RNA-sequencing to analyze the whole transcriptome of nonlesional skin. Six-hundred and seven genes (476 up-regulated and 131 down-regulated by greater than 2-fold) and one-hundred and ninety-three genes (172 up-regulated and 21 down-regulated by greater than 2-fold) were differentially expressed when all AD or IV patients were compared to healthy donors, respectively...
September 9, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28858264/comparison-of-chemical-profiles-anti-inflammatory-activity-and-uplc-q-tof-ms-based-metabolomics-in-endotoxic-fever-rats-between-synthetic-borneol-and-natural-borneol
#15
Liang Zou, Yan Zhang, Wei Li, Jinming Zhang, Dan Wang, Jia Fu, Ping Wang
Natural borneol (NB, called "Bingpian") is an important traditional Chinese medicine to restore consciousness, remove heat and relieve pain, all of which are inflammation-related diseases. Recently, due to the limited source of NB, synthetic borneol (SB) is widely used as a substitute for NB in clinics. However, little is known about the effects of SB instead of NB. Herein, the aim of the present study was to compare NB and SB on chemical profiles by gas chromatography-mass spectrometer (GC-MS) analysis, anti-inflammatory activity in lipopolysaccharide (LPS)-induced RAW 264...
August 31, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28839358/wound-healing-activity-of-zanthoxylum-bungeanum-maxim-seed-oil-on-experimentally-burned-rats
#16
Xiao-Qiang Li, Rong Kang, Jun-Cheng Huo, Yan-Hua Xie, Si-Wang Wang, Wei Cao
BACKGROUND: The seed oil of Zanthoxylum bungeanum Maxim (ZBSO) is considered to be rich source of fatty acids, mainly oleic and linoleic acids, and has been used for the treatment of burns in Chinese medicine. OBJECTIVE: We evaluated the healing efficacy of ZBSO and explored its possible mechanism on scalded rats. MATERIALS AND METHODS: Sprague-Dawley rat models with deep second-degree burns were set up, and ZBSO (500 and 1000 μl/wound) was topically applied twice daily for 7 days and then once daily until wound healing...
July 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28807874/docosahexaenoic-acid-increases-the-expression-of-oxidative-stress-induced-growth-inhibitor-1-through-the-pi3k-akt-nrf2-signaling-pathway-in-breast-cancer-cells
#17
Chia-Han Tsai, You-Cheng Shen, Haw-Wen Chen, Kai-Li Liu, Jer-Wei Chang, Pei-Yin Chen, Chen-Yu Lin, Hsien-Tsung Yao, Chien-Chun Li
Oxidative stress-induced growth inhibitor 1 (OSGIN1), a tumor suppressor, inhibits cell proliferation and induces cell death. N-6 and n-3 PUFAs protect against breast cancer, but the molecular mechanisms of this effect are not clear. We investigated the effect of n-6 and n-3 PUFAs on OSGIN1 expression and whether OSGIN1 is involved in PUFA-induced apoptosis in breast cancer cells. We used 100 μM of n-6 PUFAs including arachidonic acid, linoleic acid, and gamma-linolenic acid and n-3 PUFAs including alpha-linolenic acid, eicosapentaenoic acid, and docosahexaenoic acid (DHA)...
August 12, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/28795443/effect-of-conjugated-linoleic-acids-and-omega-3-fatty-acids-with-or-without-resistance-training-on-muscle-mass-in-high-fat-diet-fed-middle-aged-mice
#18
Sang-Rok Lee, Andy V Khamoui, Edward Jo, Michael C Zourdos, Lynn B Panton, Michael J Ormsbee, Jeong-Su Kim
What is the central question of this study? This study examined the effects of 20 weeks of administration of conjugated linoleic acids/omega-3 fatty acids with or without programed resistance exercise training on body composition, skeletal muscle properties and functional capacity in middle-aged mice fed a high-fat diet. What is the main finding and its importance? Chronic daily administration of conjugated linoleic acids/omega-3 fatty acids with resistance exercise training can help to blunt fat gain, alleviate loss of myogenic capacity and sensorimotor function and lower tissue inflammation in middle-aged mice during chronic high-fat diet-induced catabolism...
August 10, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/28716367/redefining-essential-fatty-acids-in-the-era-of-novel-intravenous-lipid-emulsions
#19
REVIEW
Lorenzo Anez-Bustillos, Duy T Dao, Gillian L Fell, Meredith A Baker, Kathleen M Gura, Bruce R Bistrian, Mark Puder
The essentiality of fatty acids was determined by the Burrs in the 1920s. It is commonly accepted that provision of linoleic (LA) and alpha-linolenic acids (ALA) prevents and reverses essential fatty acid deficiency (EFAD). Development of alternative injectable lipid emulsions (ILE) low in LA and ALA has raised concern about their ability to prevent EFAD. This review provides biochemical evidence coupled with observations from animal and human studies that aim to characterize which fatty acids are truly essential to prevent EFAD...
July 8, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28631807/compositional-analyses-and-shelf-life-modeling-of-njangsa-ricinodendron-heudelotii-seed-oil-using-the-weibull-hazard-analysis
#20
Harold K Abaidoo-Ayin, Prince G Boakye, Kerby C Jones, Victor T Wyatt, Samuel A Besong, Stephen E Lumor
This study investigated the compositional characteristics and shelf-life of Njangsa seed oil (NSO). Oil from Njangsa had a high polyunsaturated fatty acid (PUFA) content of which alpha eleostearic acid (α-ESA), an unusual conjugated linoleic acid was the most prevalent (about 52%). Linoleic acid was also present in appreciable amounts (approximately 34%). Our investigations also indicated that the acid-catalyzed transesterification of NSO resulted in lower yields of α-ESA methyl esters, due to isomerization, a phenomenon which was not observed under basic conditions...
June 20, 2017: Journal of Food Science
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