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Prostaglandins, Leukotrienes, and Essential Fatty Acids

journal
https://www.readbyqxmd.com/read/28189338/dynamic-interactions-of-n-3-and-n-6-fatty-acid-nutrients
#1
B Lands, D Bibus, K D Stark
Careful handling of data on fatty acid composition is needed when interpreting evidence for the influence of dietary n-3 and n-6 essential fatty acids on brain function and health conditions. The relative dietary supplies of competing n-3 and n-6 nutrients determine the balance of 20- and 22-carbon n-3 and n-6 highly unsaturated fatty acids (HUFA) which accumulate competitively at the 2-position of tissue phospholipids. In turn, the HUFA balance expressed as the %n-6 in HUFA affects the likely intensity of n-6 eicosanoid actions in diverse health conditions...
January 25, 2017: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/28161285/genetic-polymorphisms-of-fads1-fads2-and-fads3-and-fatty-acid-profiles-in-subjects-received-methadone-maintenance-therapy
#2
Hui-Ting Yang, Ruey-Yun Wang, Shih-Yi Huang, Chieh-Liang Huang, Kuan-Pin Su
Abnormal fatty acid metabolism and the related enzymes had been observed to be associated with psychiatric disorders. We investigated FADS gene family genetic polymorphisms and variations of lipid profiles in patients with heroin dependence receiving 6-month methadone maintenance therapy (MMT). We recruited 89 MMT drug abusers and analyzed 3 tag single nucleotide polymorphisms (SNPs) from Fatty acid desaturases (FADS), FADS1, FADS2 and FADS3. The fatty acid profiles of erythrocyte membranes were analyzed based on genetic variations...
January 25, 2017: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/28111064/a-rapid-uplc-ms-ms-assay-for-eicosanoids-in-human-plasma-application-to-evaluate-niacin-responsivity
#3
Tricia M Miller, Samuel M Poloyac, Kacey B Anderson, Brooke L Waddell, Erik Messamore, Jeffrey K Yao
A rapid and sensitive method using ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) was developed to simultaneously quantify hydroxyeicosatetraenoic (HETE), dihydroxyeicosatrienoic (DiHETrE), epoxyeicosatrienoic acid (EET), and prostaglandin metabolites of arachidonic acid in human plasma. Sample preparation consisted of solid phase extraction with Oasis HLB (30mg) cartridges for all metabolites. Separation of HETEs, EETs, and DiHETrEs was achieved on an Acquity UPLC BEH C18, 1...
January 18, 2017: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/28110829/lipidomic-analysis-reveals-significant-lipogenesis-and-accumulation-of-lipotoxic-components-in-ob-ob-mouse-organs
#4
Jun Hayakawa, Miao Wang, Chunyan Wang, Rowland H Han, Zhen Y Jiang, Xianlin Han
To further understand the role of lipogenesis and lipotoxicity in the development of obesity and diabetes, lipidomes of various organs from ob/ob mice and their wild type controls were analyzed by shotgun lipidomics at 10, 12, and 16 weeks of age. We observed that the amounts of fatty acyl (FA) chains corresponding to those from de novo synthesis (e.g., 16:0, 16:1, and 18:1 FA) were substantially elevated in ob/ob mice, consistent with increased expression of genes and proteins involved in biosynthesis. Polyunsaturated fatty acid species were moderately increased in the examined tissues of ob/ob mice, since they can only be absorbed from diets or elongated from the ingested n-3 or n-6 FA...
January 11, 2017: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/28108057/bani-polymorphism-of-cytosolic-phospholipase-a2-gene-and-somatic-symptoms-in-medication-free-acute-depressed-patients
#5
Jane Pei-Chen Chang, Ta-Wei Guu, Yi-Chih Chen, Piotr Gałecki, Anna Walczewska, Kuan-Pin Su
Somatic symptoms are commonly seen in patients with major depressive disorder (MDD) and might be associated with inflammatory activation. Cytosolic phospholipase A2 (cPLA2) and cyclo-oxygenase-2 (COX-2) are the key enzymes in the metabolism of polyunsaturated fatty acids (PUFAs), which in turn may play an important role in inflammation and somatic symptoms in depression. This study investigated the effects of BanI polymorphism of cPLA2 gene and COX-2 rs4648308 genotypes on somatic symptoms and inflammatory marker in patients with MDD...
January 4, 2017: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/28088293/the-essentiality-of-arachidonic-acid-in-addition-to-docosahexaenoic-acid-for-brain-growth-and-function
#6
Akiko Harauma, Hidemi Yasuda, Erisa Hatanaka, Manabu T Nakamura, Norman Salem, Toru Moriguchi
The essentiality of arachidonic acid (ARA) and docosahexaenoic acid (DHA) for growth and brain function using delta-6-desaturase knockout (D6D-KO) mice and a novel artificial rearing method was investigated. Newborn male wild type (WT) and homozygous D6D-KO pups were separated from their dams within 48h and fed artificial milk containing α-linolenic acid and linoleic acid (Cont), or supplemented with ARA, DHA or both (ARA+DHA). After weaning, each group was fed diets similar to artificial milk in fatty acid composition for 7 weeks...
January 2017: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/28088292/human-fetal-intestinal-epithelial-cells-metabolize-and-incorporate-branched-chain-fatty-acids-in-a-structure-specific-manner
#7
Lei Liu, Zhen Wang, Hui Gyu Park, Chuang Xu, Peter Lawrence, Xueli Su, Vasuki Wijendran, W Allan Walker, Kumar S D Kothapalli, J Thomas Brenna
BACKGROUND: Branched chain fatty acids (BCFA) are constituents of gastrointestinal (GI) tract in healthy newborn human infants, reduce the incidence of necrotizing enterocolitis (NEC) in a neonatal rat model, and are incorporated into small intestine cellular lipids in vivo. We hypothesize that BCFA are taken up, metabolized and incorporated into human fetal cells in vitro. METHODS: Human H4 cells, a fetal non-transformed primary small intestine cell line, were incubated with albumin-bound non-esterified anteiso-17:0, iso-16:0, iso-18:0 and/or iso-20:0, and FA profiles in lipid fractions were analyzed...
January 2017: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/28088291/bcfa-suppresses-lps-induced-il-8-mrna-expression-in-human-intestinal-epithelial-cells
#8
Y Yan, Z Wang, J Greenwald, K S D Kothapalli, H G Park, R Liu, E Mendralla, P Lawrence, X Wang, J T Brenna
Branched chain fatty acids (BCFA) are components of common food fats and are major constituents of the normal term human newborn GI tract. Polyunsaturated fatty acids (PUFA) have been suggested to reduce the risk and development of inflammatory bowel diseases (IBD); however, little is known about the influence of BCFA on inflammation. We investigated the effect of BCFA on interleukin (IL)-8 and NF-κB production in a human intestinal epithelial cell line (Caco-2). Cells were pre-treated with specific BCFA, or DHA, or EPA, and then activated with lipopolysaccharide (LPS)...
January 2017: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/28088290/could-post-weaning-dietary-chia-seed-mitigate-the-development-of-dyslipidemia-liver-steatosis-and-altered-glucose-homeostasis-in-offspring-exposed-to-a-sucrose-rich-diet-from-utero-to-adulthood
#9
M A Fortino, M E Oliva, S Rodriguez, Y B Lombardo, A Chicco
The present work analyzes the effects of dietary chia seeds during postnatal life in offspring exposed to a sucrose-rich diet (SRD) from utero to adulthood. At weaning, chia seed (rich in α-linolenic acid) replaced corn oil (rich in linoleic acid) in the SRD. At 150 days of offspring life, anthropometrical parameters, blood pressure, plasma metabolites, hepatic lipid metabolism and glucose homeostasis were analyzed. Results showed that chia was able to prevent the development of hypertension, liver steatosis, hypertriglyceridemia and hypercholesterolemia...
January 2017: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/28088289/effects-of-treatment-with-sucrose-in-drinking-water-on-liver-histology-lipogenesis-and-lipogenic-gene-expression-in-rats-fed-high-fiber-diet
#10
Tomislav Mašek, Natalija Filipović, Ana Vuica, Kristina Starčević
We studied the influence of sucrose in drinking water on liver histology, fatty acid profile and lipogenic genes expression in rats maintained on high-fiber. The experimental groups were: control group (water) and sucrose group (sucrose solution in drinking water, 30% w/v). Liver histology of sucrose treated rats revealed steatosis and increased number of αSMA immunoreactive cells without the signs of fibrosis. Sucrose treatment increased de novo lipogenesis, lipid peroxidation and MUFA content and decreased PUFA content, C18:2n6 and C20:4n6 content in total phospholipids and phosphatidylethanolamine and C18:2n6 content in cardiolipin...
January 2017: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/27914519/growth-and-tolerance-of-infants-fed-formula-with-a-new-algal-source-of-docosahexaenoic-acid-double-blind-randomized-controlled-trial
#11
Michael Yeiser, Cheryl L Harris, Ashlee L Kirchoff, Ashley C Patterson, Jennifer L Wampler, Edward N Zissman, Carol Lynn Berseth
Docosahexaenoic acid (DHA) in infant formula at concentrations based on worldwide human milk has resulted in circulating red blood cell (RBC) lipids related to visual and cognitive development. In this study, infants received study formula (17mg DHA/100kcal) with a commercially-available (Control: n=140; DHASCO®) or alternative (DHASCO®-B: n=127) DHA single cell oil from 14 to 120 days of age. No significant group differences were detected for growth rates by gender through 120 days of age. Blood fatty acids at 120 days of age were assessed by capillary column gas chromatography in a participant subset (Control: n=34; DHASCO-B: n=27)...
December 2016: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/27914518/delta-6-desaturase-activity-during-the-first-year-of-life-in-preterm-infants
#12
Nobuhiko Nagano, Tomoo Okada, Kazunori Kayama, Shigeharu Hosono, Yohei Kitamura, Shigeru Takahashi
Term neonates have high delta-6 desaturase (D6D) activity, which is important for regulating polyunsaturated fatty acid's (PUFA) nutritional status. The aim was to investigate D6D activity in preterm infants and its postnatal changes. Forty-three appropriate-for-gestational-age infants were included. PUFA in red blood cells was analyzed at birth and at one, six, and 12 months of age. D6D activity was estimated by 20:3n-6/18:2n-6 ratio. At birth, preterm infants had D6D activity as high as that of term infants; D6D activity declined to about one-third at one month, then further decreased to about one-sixth at six months and remained stable until 12 months...
December 2016: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/27914517/effect-of-flaxseed-oil-and-microalgae-dha-on-the-production-performance-fatty-acids-and-total-lipids-of-egg-yolk-and-plasma-in-laying-hens
#13
M Neijat, O Ojekudo, J D House
The incorporation of omega-3 polyunsaturated fatty acids (PUFA) in the egg is dependent on both the transfer efficiency of preformed dietary omega-3 fatty acids to the eggs as well as endogenous PUFA metabolism and deposition. Employing an experimental design consisting of 70 Lohmann LSL-Classic hens (n=10/treatment) in a 6-week feeding trial, we examined the impact of graded levels of either flaxseed oil (alpha-linolenic acid, ALA) or algal DHA (preformed docosahexaenoic acid, DHA), each supplying 0.20%, 0...
December 2016: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/27914516/leukotriene-b4-induces-emt-and-vimentin-expression-in-panc-1-pancreatic-cancer-cells-involvement-of-blt2-via-erk2-activation
#14
You Ri Kim, Mi Kyung Park, Gyeong Jin Kang, Hyun Ji Kim, Eun Ji Kim, Hyun Jung Byun, Moo-Yeol Lee, Chang Hoon Lee
Leukotriene B4 (LTB4) is a leukocyte chemoattractant and plays a major role controlling inflammatory responses including pancreatitis. LTB4 is known to be correlated with cancer progression. LTB4 induces keratin phosphorylation and reorganization by activating extracellular regulated kinase (ERK) in PANC-1 pancreatic cancer cell lines. However, the role of LTB4 in epithelial mesenchymal transition (EMT) and vimentin expression in pancreatic cancer cells is unknown. We examined whether LTB4 induces EMT and vimentin expression by Western blot, si-RNA, and RT-PCR...
December 2016: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/27914515/measurement-of-red-blood-cell-eicosapentaenoic-acid-epa-levels-in-a-randomised-trial-of-epa-in-patients-with-colorectal-cancer-liver-metastases
#15
Henry Watson, Andrew J Cockbain, Jade Spencer, Amanda Race, Milene Volpato, Paul M Loadman, Giles J Toogood, Mark A Hull
We investigated red blood cell (RBC) PUFA profiles, and the predictive value of RBC EPA content for tumour EPA exposure and clinical outcomes, in the EMT study, a randomised trial of EPA in patients awaiting colorectal cancer (CRC) liver metastasis surgery (Cockbain et al., 2014) [8]. There was a significant increase in RBC EPA in the EPA group (n=43; median intervention 30 days; mean absolute 1.26[±0.14]% increase; P<0.001), but not in the placebo arm (n=45). EPA incorporation varied widely in EPA users and was not explained by treatment duration or compliance...
December 2016: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/27914514/protective-effects-of-fish-oil-and-pioglitazone-on-pancreatic-tissue-in-obese-kk-mice-with-type-2-diabetes
#16
Yuzuru Iizuka, Hyounju Kim, Takuya Izawa, Koji Sakurai, Satoshi Hirako, Masahiro Wada, Akiyo Matsumoto
n-3 Polyunsaturated fatty acids, such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), have protective effects against the pancreatic β-cell dysfunction through several mechanisms. Thiazolidines are insulin sensitizers and are used in treating patients with type 2 diabetes. Our previous study demonstrated that a combination of fish oil, which is rich with EPA and DHA, and pioglitazone exerts beneficial effects on obesity and diabetes through their actions on the liver and adipose tissue. However, it remains largely unknown whether such combination therapy affects the pancreas...
December 2016: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/27914513/fatty-acid-profile-in-cord-blood-of-neonates-born-to-optimally-controlled-gestational-diabetes-mellitus
#17
Pauline Léveillé, Jean-Luc Ardilouze, Jean-Charles Pasquier, Charles Deacon, Kevin Whittingstall, Mélanie Plourde
OBJECTIVE: To evaluate the fatty acid profile of cord blood phospholipids (PL), cholesteryl esters (CE), triglycerides (TG) and non-esterified fatty acids (NEFA) in neonates born to mothers with gestational diabetes mellitus (GDM) compared to non-diabetic mothers. METHODS: The offspring of 30 pregnant women (15 non-diabetic controls, 15 with diet- or insulin-controlled GDM) were recruited before delivery. Cord blood was collected. After lipid extraction, PL, CE, TG and NEFA were separated by thin layer chromatography and analysed by gas chromatography...
December 2016: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/27914512/moderate-intake-of-docosahexaenoic-acid-raises-plasma-and-platelet-vitamin-e-levels-in-cystic-fibrosis-patients
#18
Evelyne Véricel, Stéphane Mazur, Romain Colas, Véronique Delaup, Catherine Calzada, Philippe Reix, Isabelle Durieu, Michel Lagarde, Gabriel Bellon
Patients with cystic fibrosis have increased oxidative stress and impaired antioxidant systems. Moderate intake of docosahexaenoic acid (DHA) may favor the lowering of oxidative stress. In this randomized, double-blind, cross-over study, DHA or placebo capsules, were given daily to 10 patients, 5mg/kg for 2 weeks then 10mg/kg DHA for the next 2 weeks (or placebo). After 9 weeks of wash-out, patients took placebo or DHA capsules. Biomarkers of lipid peroxidation and vitamin E were measured at baseline, and after 2 and 4 weeks of treatment in each phase...
December 2016: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/27914511/gas-chromatography-determination-of-fatty-acids-in-the-human-erythrocyte-membranes-a-review
#19
REVIEW
Zuzana Bystrická, Zdeňka Ďuračková
Blood fatty acid measurements can reflect exogenously consumed fatty acids allowing to resolve some metabolic disorders (e.g. diabetes, anorexia) or mental disorders (e.g. depression, anxiety, schizophrenia). For this purpose, fatty acids can be determined in the whole blood or various blood fractions such as the plasma, serum or erythrocytes. Measurement of fatty acids in the whole blood by dried blood spot technique is becoming increasingly popular and is often used mainly for the screening of newborns due to the use of the small sample volume...
December 2016: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/27914510/impact-of-lactobacillus-fermentum-and-dairy-lipids-in-the-maternal-diet-on-the-fatty-acid-composition-of-pups-brain-and-peripheral-tissues
#20
C Joffre, A L Dinel, A Aubert, C Fressange-Mazda, P Le Ruyet, S Layé
The aim of the study was to determine the effect of maternal diets administered since day 1 of gestation and containing dairy lipids or vegetable oils differing in the supply of n-3 polyunsaturated fatty acids (n-3 PUFAs) (equilibrated or deficient) and of Lactobacillus fermentum (L. fermentum) on the docosahexaenoic acid (DHA) accretion in the pups at postnatal day 14 in the prefrontal cortex (PFC) and hippocampus (HC) for brain structures and in the liver and adipose tissue for peripheral tissues. Maternal milk fatty acid composition was also assessed by analyzing the fatty acid composition of the gastric content of the pups...
December 2016: Prostaglandins, Leukotrienes, and Essential Fatty Acids
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