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https://www.readbyqxmd.com/read/29331920/engineering-yeast-for-utilization-of-alternative-feedstocks
#1
REVIEW
Allison Yaguchi, Michael Spagnuolo, Mark Blenner
Realizing the economic benefits of alternative substrates for commodity chemical bioproduction typically requires significant metabolic engineering of common model organisms, such as Saccharomyces cerevisiae. A growing toolkit is enabling engineering of non-conventional yeast that have robust native metabolism for xylose, acetate, aromatics, and waste lipids. Scheffersomyces stipitis was engineered to produce itaconic acid from xylose. Yarrowia lipolytica produced lipids from dilute acetate at over 100g/L. Cutaneotrichosporon oleaginosus was engineered to produce omega-3 fatty acids and recently was shown to accumulate nearly 70% lipids when grown on aromatics as a carbon source...
January 10, 2018: Current Opinion in Biotechnology
https://www.readbyqxmd.com/read/29331711/omega-3-supplements-reduce-self-reported-physical-aggression-in-healthy-adults
#2
Laurent Bègue, Ap Zaalberg, Rébecca Shankland, Aaron Duke, Julie Jacquet, Perla Kaliman, Lucie Pennel, Marc Chanove, Philippe Arvers, Brad J Bushman
There is emerging evidence that Omega-3 polyunsaturated fatty acids (PUFA) supplements can decrease aggression. However, experimental studies with adults from non-specific populations are scarce. We hypothesized that Omega-3 supplements would decrease self-reported aggression among non-clinical participants. In a double-blind randomized trial, two groups of participants (N = 194) aged 18-45 from the general population followed a 6-weeks treatment with 638mg docosahexaenoic acid (DHA) and 772mg eicosapentaenoic acid (EPA) per day or the equivalent quantity of copra oil (placebo)...
December 15, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/29331608/allosteric-effects-in-bacteriophage-hk97-procapsids-revealed-directly-from-covariance-analysis-of-cryo-em-data
#3
Nan Xu, David Veesler, Peter C Doerschuk, John E Johnson
The information content of cryo EM data sets exceeds that of the electron scattering potential (cryo EM) density initially derived for structure determination. Previously we demonstrated the power of data variance analysis for characterizing regions of cryo EM density that displayed functionally important variance anomalies associated with maturation cleavage events in Nudaurelia Omega Capensis Virus and the presence or absence of a maturation protease in bacteriophage HK97 procapsids. Here we extend the analysis in two ways...
January 10, 2018: Journal of Structural Biology
https://www.readbyqxmd.com/read/29331380/eicosapentaenoic-acid-inhibits-oxidation-of-high-density-lipoprotein-particles-in-a-manner-distinct-from-docosahexaenoic-acid
#4
Samuel C R Sherratt, R Preston Mason
The omega-3 fatty acid eicosapentaenoic acid (EPA) reduces oxidation of ApoB-containing particles in vitro and in patients with hypertriglyceridemia. EPA may produce these effects through a potent antioxidant mechanism, which may facilitate LDL clearance and slow plaque progression. We hypothesize that EPA antioxidant effects may extend to ApoA-containing particles like HDL, potentially preserving certain atheroprotective functions. HDL was isolated from human plasma and incubated at 37 °C in the absence (vehicle) or presence of EPA and/or DHA; 5...
January 10, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29331331/interaction-of-ceramides-and-tear-lipocalin
#5
Ben J Glasgow, Adil R Abduragimov
The distribution of lipids in tears is critical to their function. Lipids in human tears may retard evaporation by forming a surface barrier at the air interface. Lipids complexed with the major lipid binding protein in tears, tear lipocalin, reside in the bulk (aqueous) and may have functions unrelated to the surface. Many new lipids species have been revealed through recent mass spectrometric studies. Their association with lipid binding proteins has not been studied. Squalene, (O-acyl) omega-hydroxy fatty acids (OAHFA) and ceramides are examples...
January 10, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29329795/omega-3-fatty-acids-and-adipose-tissue-biology
#6
REVIEW
Ondrej Kuda, Martin Rossmeisl, Jan Kopecky
This review provides evidence for the importance of white and brown adipose tissue (i.e. WAT and BAT) function for the maintenance of healthy metabolic phenotype and its preservation in response to omega-3 polyunsaturated fatty acids (omega-3 PUFA), namely in the context of diseased states linked to aberrant accumulation of body fat, systemic low-grade inflammation, dyslipidemia and insulin resistance. More specifically, the review deals with (i) the concept of immunometabolism, i.e. how adipose-resident immune cells and adipocytes affect each other and define the immune-metabolic interface; and (ii) the characteristic features of "healthy adipocytes" in WAT, which are relatively small fat cells endowed with a high capacity for mitochondrial oxidative phosphorylation, triacylglycerol/fatty acid (TAG/FA) cycling and de novo lipogenesis (DNL)...
January 9, 2018: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/29329042/assessment-of-the-efficacy-of-omega-3-fatty-acids-on-metabolic-and-inflammatory-parameters-in-patients-with-schizophrenia-taking-clozapine-and-sodium-valproate
#7
Fatemeh Behdani, Seyede Narjes Roudbaraki, Maryam Saberi-Karimian, Maryam Tayefi, Paria Hebrani, Amir Akhavanrezayat, Sadegh Vahabi Amlashi, Gordon A Ferns, Majid Ghayour-Mobarhan
Omega-3 fatty acid (FA) supplementation has been reported to improve several cardio-metabolic risk factors. We aimed to assess the efficacy of omega-3 fatty acids on metabolic and inflammatory indices in patients with schizophrenia who were taking clozapine and sodium valproate. All patients were on a stable dose of 300-400mg of clozapine for 3 months. Subjects were randomized to treatment with either omega-3 fatty acid (4gr/day) or a placebo for 8 weeks. Height, weight, abdominal circumference, serum lipid profile, fasting blood glucose (FBG), and serum high sensitivity-C-reactive protein (hs-CRP) were determined at baseline and after 8 weeks of treatment...
December 12, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/29324650/update-on-the-impact-of-omega-3-fatty-acids-on-inflammation-insulin-resistance-and-sarcopenia-a-review
#8
REVIEW
Alex Buoite Stella, Gianluca Gortan Cappellari, Rocco Barazzoni, Michela Zanetti
Elderly and patients affected by chronic diseases face a high risk of muscle loss and impaired physical function. Omega 3 fatty acids (FA) attenuate inflammation and age-associated muscle loss, prevent systemic insulin resistance and improve plasma lipids, potentially impacting on sarcopenia. This paper aims to review recent randomized clinical studies assessing the effects a chronic omega 3 FA supplementation on inflammatory and metabolic profile during conditions characterized by sarcopenia (aging, insulin resistance, type 2 diabetes, chronic renal failure)...
January 11, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29324423/effects-of-omega-3-fatty-acids-against-chemotherapy-induced-mucositis-a-double-blind-randomized-clinical-trial
#9
Maryam Alsadat Hashemipour, Samaneh Barzegari, Shahla Kakoie, Raha Habib Aghahi
OBJECTIVE: This double-blind randomized clinical trial evaluates the ef cacy and route of administration of omega-3 fatty acids for the prevention and treatment of oral mucositis in patients undergoing che- motherapy in Iranian hospitals. MATERIALS AND METHODS: Sixty patients developing World Health Organization (WHO) grade 1 oral mucositis were randomized to the omega-3 fatty acid (n=30) or placebo (n=30) group. Mucositis was assessed according to the WHO, Western Consortium for Cancer Nursing Research, and Oral Mucositis Weekly Questionnaire cri- teria at baseline and rst, second, and third weeks of chemotherapy un- til mucositis resolved...
December 2017: Wounds: a Compendium of Clinical Research and Practice
https://www.readbyqxmd.com/read/29324050/the-roles-of-adjuvant-supplements-in-colorectal-cancer-patients-on-chemotherapy-reaping-benefits-from-metabolic-crosstalk
#10
Babak Golkhalkhali, Audra Shaleena Paliany, Kin Fah Chin, Retnagowri Rajandram
The prevalence of colorectal cancer (CRC) is on a steady rise over the years, with the World Health Organization (WHO) reporting CRC as the fourth leading cause of cancer-related death worldwide. While treatment modalities may differ in accordance to the staging and severity of the disease itself, chemotherapy is almost unavoidable in most cases. Though effective in its mode of action, chemotherapy is commonly associated with undesirable side effects that negatively affects the patient in terms of quality of life, and in some cases may actually interfere with their treatment regimens, thus escalating to poor prognosis...
January 11, 2018: Nutrition and Cancer
https://www.readbyqxmd.com/read/29321047/effects-of-concentrated-long-chain-omega-3-polyunsaturated-fatty-acid-supplementation-before-radical-prostatectomy-on-prostate-cancer-proliferation-inflammation-and-quality-of-life-study-protocol-for-a-phase-iib-randomized-double-blind-placebo-controlled-trial
#11
Marie-Hélène Guertin, Karine Robitaille, Jean-François Pelletier, Thierry Duchesne, Pierre Julien, Josée Savard, Isabelle Bairati, Vincent Fradet
BACKGROUND: Prostate cancer is the most commonly diagnosed cancer in north-American men. Few dietary or lifestyle interventions have been tested to prevent prostate cancer progression. Omega-3 fatty acid supplementation represents a promising intervention for prostate cancer patients. The aim of the study is to evaluate the effects of long-chain omega-3 polyunsaturated fatty acids (LCn3), more precisely eicosapentaenoic acid monoacylglyceride (MAG-EPA) supplementation, on prostate cancer proliferation, inflammation mediators and quality of life among men who will undergo radical prostatectomy...
January 10, 2018: BMC Cancer
https://www.readbyqxmd.com/read/29319743/nursing-care-interpersonal-relationship-questionnaire-elaboration-and-validation
#12
José Wicto Pereira Borges, Thereza Maria Magalhães Moreira, Dalton Franscisco de Andrade
OBJECTIVE: to elaborate an instrument for the measurement of the interpersonal relationship in nursing care through the Item Response Theory, and the validation thereof. METHOD: methodological study, which followed the three poles of psychometry: theoretical, empirical and analytical. The Nursing Care Interpersonal Relationship Questionnaire was developed in light of the Imogene King's Interpersonal Conceptual Model and the psychometric properties were studied through the Item Response Theory in a sample of 950 patients attended in Primary, Secondary and Tertiary Health Care...
January 8, 2018: Revista Latino-americana de Enfermagem
https://www.readbyqxmd.com/read/29317195/induction-of-divalent-cation-permeability-by-heterologous-expression-of-a-voltage-sensor-domain
#13
Hiroki Arima, Hidekazu Tsutsui, Ayako Sakamoto, Manabu Yoshida, Yasushi Okamura
The voltage sensor domain (VSD) is a protein domain that confers sensitivity to membrane potential in voltage-gated ion channels as well as the voltage-sensing phosphatase. Although VSDs have long been considered to function as regulatory units acting on adjacent effectors, recent studies have revealed the existence of direct ion permeation paths in some mutated VSDs and in the voltage-gated proton channel. In this study, we show that calcium currents are evoked upon membrane hyperpolarization in cells expressing a VSD derived from an ascidian voltage-gated ion channel superfamily...
January 6, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29316682/effect-of-omega-3-fatty-acid-supplementation-on-oxylipins-in-a-routine-clinical-setting
#14
Christoph Schmöcker, Ingrid W Zhang, Stefanie Kiesler, Ursula Kassner, Annika I Ostermann, Elisabeth Steinhagen-Thiessen, Nils H Schebb, Karsten-H Weylandt
Omega-6 polyunsaturated fatty acid (n-6 PUFA) is the predominant polyunsaturated fatty acid (PUFA), especially in Western diet. A high omega-6/omega-3 ratio in Western diets is implicated in the development of cardiovascular diseases and inflammatory processes. Studies in animal models and in humans have demonstrated beneficial effects of omega-3 PUFA (n-3 PUFA) in a variety of diseases, including cardiac arrhythmias and inflammatory diseases, as well as breast and colon cancer. The molecular mechanisms underlying the effects of n-3 PUFA are still not well understood...
January 8, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29316612/association-between-diet-quality-scores-adiposity-total-cholesterol-and-markers-of-nutritional-status-in-european-adults-findings-from-the-food4me-study
#15
Rosalind Fallaize, Katherine M Livingstone, Carlos Celis-Morales, Anna L Macready, Rodrigo San-Cristobal, Santiago Navas-Carretero, Cyril F M Marsaux, Clare B O'Donovan, Silvia Kolossa, George Moschonis, Marianne C Walsh, Eileen R Gibney, Lorraine Brennan, Jildau Bouwman, Yannis Manios, Miroslaw Jarosz, J Alfredo Martinez, Hannelore Daniel, Wim H M Saris, Thomas E Gundersen, Christian A Drevon, Michael J Gibney, John C Mathers, Julie A Lovegrove
Diet-quality scores (DQS), which are developed across the globe, are used to define adherence to specific eating patterns and have been associated with risk of coronary heart disease and type-II diabetes. We explored the association between five diet-quality scores (Healthy Eating Index, HEI; Alternate Healthy Eating Index, AHEI; MedDietScore, MDS; PREDIMED Mediterranean Diet Score, P-MDS; Dutch Healthy Diet-Index, DHDI) and markers of metabolic health (anthropometry, objective physical activity levels (PAL), and dried blood spot total cholesterol (TC), total carotenoids, and omega-3 index) in the Food4Me cohort, using regression analysis...
January 6, 2018: Nutrients
https://www.readbyqxmd.com/read/29310309/chromatographic-column-evaluation-for-the-untargeted-profiling-of-glucosinolates-in-cauliflower-by-means-of-ultra-high-performance-liquid-chromatography-coupled-to-high-resolution-mass-spectrometry
#16
Anna Laura Capriotti, Chiara Cavaliere, Giorgia La Barbera, Carmela Maria Montone, Susy Piovesana, Riccardo Zenezini Chiozzi, Aldo Laganà
The untargeted profiling is a promising approach for the characterization of secondary metabolites in biological matrices. Thanks to the recent rapid development of high-resolution mass spectrometry (HRMS) instrumentations, the number of applications by untargeted approaches for biological samples profiling has widely increased in the recent years. Despite the high potentialities of HRMS, however, a major issue in natural products analysis often arises in the upstream process of compounds separation. A separation technique is necessary to avoid phenomena such as signal suppression, and it is especially needed in the presence of isomeric metabolites, which are otherwise indistinguishable...
March 1, 2018: Talanta
https://www.readbyqxmd.com/read/29306714/led-power-efficiency-of-biomass-fatty-acid-and-carotenoid-production-in-nannochloropsis-microalgae
#17
Ruijuan Ma, Skye R Thomas-Hall, Elvis T Chua, Eladl Eltanahy, Michael E Netzel, Gabriele Netzel, Yinghua Lu, Peer M Schenk
The microalga Nannochloropsis produces high-value omega-3-rich fatty acids and carotenoids. In this study the effects of light intensity and wavelength on biomass, fatty acid, and carotenoid production with respect to light output efficiency were investigated. Similar biomass and fatty acid yields were obtained at high light intensity (150 μmol m-2 s-1) LEDs on day 7 and low light intensity (50 μmol m-2 s-1) LEDs on day 11 during cultivation, but the power efficiencies of biomass and fatty acid (specifically eicosapentaenoic acid) production were higher for low light intensity...
December 29, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/29306635/a-mixed-mode-chromatographic-separation-method-for-the-analysis-of-dialkyl-phosphates
#18
Shaogang Chu, Robert J Letcher
While reversed-phase (RP) liquid chromatography can separate a wide range of analytes, for strongly acidic compounds such as environmentally relevant dialkyl phosphates (DAPs), this remains a challenge because they have low affinity for standard RP columns or they exhibit inferior peak shapes. Mixed-mode chromatographic (MMC) columns, which contain both RP and ion-exchange functionalities, can address these resolution problems. However, using current MMC separation approaches, analyte peaks are relatively broad as compared to conventional RP chromatography...
January 2, 2018: Journal of Chromatography. A
https://www.readbyqxmd.com/read/29306138/spatial-and-length-dependent-variation-of-the-risks-and-benefits-of-consuming-walleye-sander-vitreus
#19
Ursula Strandberg, Satyendra P Bhavsar, Tarn Preet Parmar, Michael T Arts
Restricted fish consumption due to elevated contaminant levels may limit the intake of essential omega-3 fatty acids, such as eicosapentaenoic (EPA; 20:5n-3) and docosahexaenoic (DHA; 22:6n-3) acids. We analyzed lake- and length-specific mercury and EPA+DHA contents in Walleye (Sander vitreus; Mitchell 1818) from 20 waterbodies in Ontario, Canada, and used this information to calculate the theoretical intake of EPA+DHA when the consumption advisories are followed. The stringent consumption advisory resulted in decreased EPA+DHA intake regardless of the EPA+DHA content in Walleye...
January 2, 2018: Environment International
https://www.readbyqxmd.com/read/29306078/effect-of-fish-oil-on-agonist-induced-receptor-internalization-of-the-pg-f2%C3%AE-receptor-and-cell-signaling-in-bovine-luteal-cells-in%C3%A2-vitro
#20
M R Plewes, P D Burns
Many receptors span the plasma membrane allowing for signal transduction, converting extracellular signals into intracellular signals. Following ligand-induced activation, membrane-bound receptors are taken into endocytic vesicles, where they are targeted for degradation or recycled back to the plasma membrane. The objectives of the present study were to determine the influence of fish oil on (1) PGF2α-induced receptor internalization and trafficking of the PGF2α (FP) receptor, (2) cytoskeletal structural integrity, and (3) PGF2α-induced mitogen-activated protein kinase (MAPK) signaling in bovine luteal cells...
December 12, 2017: Domestic Animal Endocrinology
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