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Fatty acid metabolism

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https://www.readbyqxmd.com/read/29040839/effects-of-the-dietary-carbohydrate-fat-ratio-on-plasma-phosphatidylcholine-profiles-in-human-and-mouse
#1
Mizuki Inoue, Nanami Senoo, Tomoki Sato, Yuri Nishimura, Takumi Nakagawa, Noriyuki Miyoshi, Toshinao Goda, Akihito Morita, Shinji Miura
Phosphatidylcholines (PCs), a major class of human plasma phospholipids, are composed of highly diverse fatty acids. Because the dietary carbohydrate-fat ratio alters the hepatic fatty acid metabolism, plasma fatty acids that bind PCs, which are secreted as lipoproteins from the liver, may be affected by long-term consumption of a high-carbohydrate diet or a high-fat diet. Therefore, in this study, we profiled the plasma PC species comprehensively in formulated dieting conditions to identify those phospholipid molecules that reflect the dietary carbohydrate-fat ratio...
September 15, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29040025/effect-of-chronic-consumption-of-pistachios-pistacia-vera-l-on-glucose-metabolism-in-pre-diabetics-and-type-2-diabetics-a-systematic-review
#2
Priscila Vaz de Melo Ribeiro, Alessandra da Silva, Alinne Paula de Almeida, Helen Hermana Miranda Hermsdorff, Rita de Cássia Gonçalves Alfenas
Pistachio is a nut with high polyunsaturated fatty acids (PUFA), monounsaturated fatty acids (MUFA), polyphenols and carotenoids content, and the synergism between these compounds appears to affect glucose metabolism. In this systematic review we analyzed studies in which the effect of chronic consumption of pistachio on markers of glucose metabolism was evaluated in pre-diabetic and type 2 diabetics. We used the PubMed, Scopus, Cochrane and Lilacs databases. The research terms used were pistachio, pre-diabetes, type 2 diabetes mellitus, insulin resistance, blood glucose, hyperglycemia and glycated hemoglobin (HbA1c)...
October 17, 2017: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/29036913/alpha-galacto-oligosaccharides-at-low-dose-improve-liver-steatosis-in-a-high-fat-diet-mouse-model
#3
Eric Chappuis, Fanny Morel-Depeisse, Bruno Bariohay, Julien Roux
Non-Alcoholic Fatty Liver Disease (NAFLD) is the major liver disease worldwide and is linked to the development of metabolic syndrome and obesity. As alpha-galacto-oligosaccharides (α-GOS) from legumes have been shown to reduce body weight and hyperphagia in overweight adults, it was hypothesized that they would exert benefits on the development of metabolic syndrome and associated NAFLD in a rodent model. C57Bl/6J mice were fed a high-fat diet until they developed metabolic syndrome and were then orally treated either with α-GOS at a physiological dose (2...
October 14, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29036812/altered-gut-microbiota-in-a-mouse-model-of-alzheimer-s-disease
#4
Ling Zhang, Ying Wang, Xia Xiayu, Changhua Shi, Wei Chen, Nan Song, Xinjing Fu, Rui Zhou, Yan-Feng Xu, Lan Huang, Hua Zhu, Yunlin Han, Chuan Qin
The topic of gut microbiota is currently attracting considerable interest as a potential factor in Alzheimer's disease (AD). However, the extent and time course of alterations in the gut microbiota, and their effects on AD pathology remain uncertain. Herein, we compared the fecal microbiomes and fecal short chain fatty acid composition (SCFAs) between wild-type and AD model mice at different ages under strictly controlled specific pathogen free conditions, and also conducted microscopic investigations of intestinal structures...
October 7, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/29035781/lack-of-myeloid-fatp1-increases-atherosclerotic-lesion-size-in-ldlr-mice
#5
Liyang Zhao, Alyssa J Cozzo, Amy R Johnson, Taylor Christensen, Alex J Freemerman, James E Bear, Jeremy D Rotty, Brian J Bennett, Liza Makowski
BACKGROUND AND AIMS: Altered metabolism is an important regulator of macrophage (MΦ) phenotype, which contributes to inflammatory diseases such as atherosclerosis. Broadly, pro-inflammatory, classically-activated MΦs (CAM) are glycolytic while alternatively-activated MΦs (AAM) oxidize fatty acids, although overlap exists. We previously demonstrated that MΦ fatty acid transport protein 1 (FATP1, Slc27a1) was necessary to maintain the oxidative and anti-inflammatory AAM phenotype in vivo in a model of diet-induced obesity...
October 7, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/29035283/mtorc1-stimulates-phosphatidylcholine-synthesis-to-promote-triglyceride-secretion
#6
William J Quinn, Min Wan, Swapnil V Shewale, Rebecca Gelfer, Daniel J Rader, Morris J Birnbaum, Paul M Titchenell
Liver triacylglycerol (TAG) synthesis and secretion are closely linked to nutrient availability. After a meal, hepatic TAG formation from fatty acids is decreased, largely due to a reduction in circulating free fatty acids (FFA). Despite the postprandial decrease in FFA-driven esterification and oxidation, VLDL-TAG secretion is maintained to support peripheral lipid delivery and metabolism. The regulatory mechanisms underlying the postprandial control of VLDL-TAG secretion remain unclear. Here, we demonstrated that the mTOR complex 1 (mTORC1) is essential for this sustained VLDL-TAG secretion and lipid homeostasis...
October 16, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29034854/whole-genome-transcriptomics-reveals-global-effects-including-up-regulation-of-francisella-pathogenicity-island-gene-expression-during-active-stringent-response-in-the-highly-virulent-francisella-tularensis-subsp-tularensis-schu-s4
#7
Amber L Murch, Paul J Skipp, Peter L Roach, Petra C F Oyston
During conditions of nutrient limitation bacteria undergo a series of global gene expression changes to survive conditions of amino acid and fatty acid starvation. Rapid reallocation of cellular resources is brought about by gene expression changes coordinated by the signalling nucleotides' guanosine tetraphosphate or pentaphosphate, collectively termed (p)ppGpp and is known as the stringent response. The stringent response has been implicated in bacterial virulence, with elevated (p)ppGpp levels being associated with increased virulence gene expression...
October 16, 2017: Microbiology
https://www.readbyqxmd.com/read/29034492/transcriptome-analyses-reveal-genes-and-pathways-associated-with-fatty-acid-composition-traits-in-pigs
#8
J Zhang, L Cui, J Ma, C Chen, B Yang, L Huang
Fatty acid composition is associated with meat quality in pigs as well as with obesity- and diabetes-related traits in humans. Liver and muscle are important tissues for fatty acid metabolism. In this study, we evaluated correlations between liver and muscle transcriptomes and fatty acid composition traits in muscle and abdominal fat tissues in 335 F2 pigs from a White Duroc × Erhualian F2 pig resource population. Transcripts significantly correlated with fatty acid composition traits were enriched for genes involved in the categories of triglyceride catabolic process, mitochondrial function, hematological and immune system, and disease such as Type II diabetes...
October 16, 2017: Animal Genetics
https://www.readbyqxmd.com/read/29034330/perinatal-bisphenol-a-exposure-induces-chronic-inflammation-in-rabbit-offspring-via-modulation-of-gut-bacteria-and-their-metabolites
#9
Lavanya Reddivari, D N Rao Veeramachaneni, William A Walters, Catherine Lozupone, Jennifer Palmer, M K Kurundu Hewage, Rohil Bhatnagar, Amnon Amir, Mary J Kennett, Rob Knight, Jairam K P Vanamala
Bisphenol A (BPA) accumulates in the maturing gut and liver in utero and is known to alter gut bacterial profiles in offspring. Gut bacterial dysbiosis may contribute to chronic colonic and systemic inflammation. We hypothesized that perinatal BPA exposure-induced intestinal (and liver) inflammation in offspring is due to alterations in the microbiome and colonic metabolome. The 16S rRNA amplicon sequencing analysis revealed differences in beta diversity with a significant reduction in the relative abundances of short-chain fatty acid (SCFA) producers such as Oscillospira and Ruminococcaceae due to BPA exposure...
September 2017: MSystems
https://www.readbyqxmd.com/read/29034200/promising-effect-of-rosa-damascena-extract-on-high-fat-diet-induced-nonalcoholic-fatty-liver
#10
Ida Davoodi, Roja Rahimi, Mohammad Abdollahi, Fatemeh Farzaei, Mohammad Hosein Farzaei, Zahra Memariani, Fariba Najafi
NAFLD is a chronic liver disease that affects a high proportion of the world's population which causes metabolic and hepatic damages. Rosa damascena Mill is traditionally used as a dietary supplement for liver disorders. This study was carried out to determine the beneficial effect of standardized extract of R. damascena on animal model of nonalcoholic fatty liver disease (NAFLD). NAFLD was induced by high-fat diet (HFD) in Wistar rats. HFD rats showed an increase (p < 0.05) in the plasma lipid levels of total cholesterol (TC), triglyceride (TG), low-density lipoprotein (LDL), and reduced the high-density lipoprotein (HDL) levels...
October 2017: Journal of Traditional and Complementary Medicine
https://www.readbyqxmd.com/read/29034175/refining-low-protein-modular-feeds-for-children-on-low-protein-tube-feeds-with-organic-acidaemias
#11
A Daly, S Evans, C Ashmore, S Chahal, S Santra, A MacDonald
Children with inherited metabolic disorders (IMD) who are dependent on tube feeding and require a protein restriction are commonly fed by 'modular tube feeds' consisting of several ingredients. A longitudinal, prospective two-phase study, conducted over 18 months assessed the long-term efficacy of a pre-measured protein-free composite feed. This was specifically designed to meet the non-protein nutritional requirements of children (aged over 1 year) with organic acidaemias on low protein enteral feeds and to be used as a supplement with an enteral feeding protein source...
December 2017: Molecular Genetics and Metabolism Reports
https://www.readbyqxmd.com/read/29033534/multicellular-tumor-spheroids-of-human-uveal-melanoma-induce-genes-associated-with-anoikis-resistance-lipogenesis-and-ssxs
#12
Charlotte Ness, Øystein Garred, Nils A Eide, Theresa Kumar, Ole K Olstad, Thomas P Bærland, Goran Petrovski, Morten C Moe, Agate Noer
PURPOSE: Uveal melanoma (UM) has a high propensity for metastatic spread, and approximately 40-50% of patients die of metastatic disease. Metastases can be found at the time of diagnosis but also several years after the tumor has been removed. The survival of disseminated cancer cells is known to be linked to anchorage independence, anoikis resistance, and an adaptive cellular metabolism. The cultivation of cancer cells as multicellular tumor spheroids (MCTS) by anchorage-independent growth enriches for a more aggressive phenotype...
2017: Molecular Vision
https://www.readbyqxmd.com/read/29032506/differential-effects-of-amp-activated-protein-kinase-in-isolated-rat-atria-subjected-to-simulated-ischemia-reperfusion-depending-on-the-energetic-substrates-available
#13
Romina Hermann, Victoria Evangelina Mestre Cordero, María de Las Mercedes Fernández Pazos, Federico Joaquín Reznik, Débora Elisabet Vélez, Enrique Alberto Savino, María Gabriela Marina Prendes, Alicia Varela
AMP-activated protein kinase (AMPK) is a serine-threonine kinase that functions primarily as a metabolic sensor to coordinate anabolic and catabolic processes in the cell, via phosphorylation of multiple proteins involved in metabolic pathways, aimed to re-establish energy homeostasis at a cell-autonomous level. Myocardial ischemia and reperfusion represents a metabolic stress situation for myocytes. Whether AMPK plays a critical role in the metabolic and functional responses involved in these conditions remains uncertain...
October 14, 2017: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/29032079/omega-6-fatty-acid-biomarkers-and-incident-type-2-diabetes-pooled-analysis-of-individual-level-data-for-39%C3%A2-740-adults-from-20-prospective-cohort-studies
#14
Jason H Y Wu, Matti Marklund, Fumiaki Imamura, Nathan Tintle, Andres V Ardisson Korat, Janette de Goede, Xia Zhou, Wei-Sin Yang, Marcia C de Oliveira Otto, Janine Kröger, Waqas Qureshi, Jyrki K Virtanen, Julie K Bassett, Alexis C Frazier-Wood, Maria Lankinen, Rachel A Murphy, Kalina Rajaobelina, Liana C Del Gobbo, Nita G Forouhi, Robert Luben, Kay-Tee Khaw, Nick Wareham, Anya Kalsbeek, Jenna Veenstra, Juhua Luo, Frank B Hu, Hung-Ju Lin, David S Siscovick, Heiner Boeing, Tzu-An Chen, Brian Steffen, Lyn M Steffen, Allison Hodge, Gudny Eriksdottir, Albert V Smith, Vilmunder Gudnason, Tamara B Harris, Ingeborg A Brouwer, Claudine Berr, Catherine Helmer, Cecilia Samieri, Markku Laakso, Michael Y Tsai, Graham G Giles, Tarja Nurmi, Lynne Wagenknecht, Matthias B Schulze, Rozenn N Lemaitre, Kuo-Liong Chien, Sabita S Soedamah-Muthu, Johanna M Geleijnse, Qi Sun, William S Harris, Lars Lind, Johan Ärnlöv, Ulf Riserus, Renata Micha, Dariush Mozaffarian
BACKGROUND: The metabolic effects of omega-6 polyunsaturated fatty acids (PUFAs) remain contentious, and little evidence is available regarding their potential role in primary prevention of type 2 diabetes. We aimed to assess the associations of linoleic acid and arachidonic acid biomarkers with incident type 2 diabetes. METHODS: We did a pooled analysis of new, harmonised, individual-level analyses for the biomarkers linoleic acid and its metabolite arachidonic acid and incident type 2 diabetes...
October 11, 2017: Lancet Diabetes & Endocrinology
https://www.readbyqxmd.com/read/29031784/isobarictags-for-relative-and-absolute-quantitation-itraq-based-proteomics-for-the-investigation-of-the-effect-of-huganqingzhi-on-non-alcoholic-fatty-liver-disease-in-rats
#15
Fan Xia, Xiaorui Yao, Waijiao Tang, Chunxin Xiao, Miaoting Yang, Benjie Zhou
ETHNOPHARMACOLOGICAL RELEVANCE: Hugan Qingzhi tablet (HQT), a traditional Chinese medicine formula has been adopted for preventing and treating nonalcoholic fatty liver disease (NAFLD). AIM: In order to explore the anti-NAFLD mechanisms of HQT, iTRAQ-based proteomics was employed to investigate the expression profiles of proteins in NAFLD rats induced by high-fat diet after HQT treatment. MATERIALS AND METHODS: The NAFLD rat model was administration of high-fat diet (HFD) for 12weeks and administering HQT in a daily basis to the HFD groups...
October 12, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29031719/macrophage-alternative-activation-confers-protection-against-lipotoxicity-induced-cell-death
#16
Lingling Dai, Prerna Bhargava, Kristopher J Stanya, Ryan K Alexander, Yae-Huei Liou, David Jacobi, Nelson H Knudsen, Alexander Hyde, Matthew R Gangl, Sihao Liu, Chih-Hao Lee
OBJECTIVE: Alternative activation (M2) of adipose tissue resident macrophage (ATM) inhibits obesity-induced metabolic inflammation. The underlying mechanisms remain unclear. Recent studies have shown that dysregulated lipid homeostasis caused by increased lipolysis in white adipose tissue (WAT) in the obese state is a trigger of inflammatory responses. We investigated the role of M2 macrophages in lipotoxicity-induced inflammation. METHODS: We used microarray experiments to profile macrophage gene expression regulated by two M2 inducers, interleukin-4 (Il-4), and peroxisome proliferator-activated receptor delta/gamma (Pparδ/Pparγ) agonists...
October 2017: Molecular Metabolism
https://www.readbyqxmd.com/read/29031387/metabolic-pathways-of-oleic-and-palmitic-acid-are-intensified-in-pcos-patients-with-normal-androgen-levels
#17
Szczuko Małgorzata, Zapałowska-Chwyć Marta, Drozd Arleta, Maciejewska Dominika, Starczewski Andrzej, Stachowska Ewa
CONTEXT: The aetiology and pathogenesis polycystic ovary syndrome (PCOS) remain uncertain and thus the relative studies are still crucial. OBJECTIVE: Our aim was to analyse the fatty acids profiles of the main phospholipids species in serum from women with PCOS classified into phenotypes, and to diagnose women more susceptible to the occurrence of inflammatory state. DESIGN: PCOS screening tests were performed in The Clinic of Gynecology and Urogynecology of Pomeranian Medical University in the 2014-2015 years...
November 2017: Prostaglandins, Leukotrienes, and Essential Fatty Acids
https://www.readbyqxmd.com/read/29031242/dietary-creatine-supplementation-lowers-hepatic-triacylglycerol-by-increasing-lipoprotein-secretion-in-rats-fed-high-fat-diet
#18
Robin P da Silva, Kelly-Ann Leonard, René L Jacobs
Recent studies have shown that dietary creatine supplementation can prevent lipid accumulation in the liver. Creatine is a small molecule that plays a large role in energy metabolism, but since the enzyme creatine kinase is not present in the liver, the classical role in energy metabolism does not hold in this tissue. Fat accumulation in the liver can lead to the development of nonalcoholic fatty liver disease (NAFLD), a progressive disease that is prevalent in humans. We have previously reported that creatine can directly influence lipid metabolism in cell culture to promote lipid secretion and oxidation...
September 1, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/29031197/mitochondrial-dysfunction-is-responsible-for-fatty-acid-synthase-inhibition-induced-apoptosis-in-breast-cancer-cells-by-pdpamn
#19
Qiang Wang, Xia Du, Bingjie Zhou, Jing Li, Wenlong Lu, Qiuyun Chen, Jing Gao
Targeting cellular metabolism is becoming a hallmark to overcome drug resistance in breast cancer treatment. Activation of fatty acid synthase (FASN) has been shown to promote breast cancer cell growth. However, there is no concrete report underlying the mechanism associated with mitochondrial dysfunction in relation to fatty acid synthase inhibition-induced apoptosis in breast cancer cells. The current study is aimed at exploring the effect of the novel manganese (Mn) complex, labeled as PdpaMn, on lipid metabolism and mitochondrial function in breast cancer cells...
October 11, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29031100/discovery-of-a-new-mechanism-for-regulation-of-plant-triacylglycerol-metabolism-the-peanut-diacylglycerol-acyltransferase-1-gene-family-transcriptome-is-highly-enriched-in-alternative-splicing-variants
#20
Ling Zheng, Jay Shockey, Feng Guo, Lingmin Shi, Xinguo Li, Lei Shan, Shubo Wan, Zhenying Peng
Triacylglycerols (TAGs) are the most important energy storage form in oilseed crops. Diacylglycerol acyltransferase (DGAT) catalyzes the rate-limiting step of the Kennedy pathway of TAG biosynthesis. To date, little is known about the regulation of DGAT activity in peanut (Arachis hypogaea), an agronomically important oilseed crop that is cultivated in many parts of the world. In this study, seven distinct forms of type 1 DGAT (AhDGAT1.1-AhDGAT1.7) were identified, cloned, and characterized. Comparisons of the nucleotide sequences and gene structures revealed many different splicing variants of AhDGAT1, some of which displayed different organ-specific expression patterns...
October 6, 2017: Journal of Plant Physiology
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