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medium chain fatty acid

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https://www.readbyqxmd.com/read/28717897/development-of-a-fast-and-cost-effective-gas-chromatography-mass-spectrometry-method-for-the-quantification-of-short-chain-and-medium-chain-fatty-acids-in-human-biofluids
#1
Cesare Lotti, Josep Rubert, Francesca Fava, Kieran Tuohy, Fulvio Mattivi, Urska Vrhovsek
The quantification of short-chain and medium-chain fatty acids is becoming more and more relevant in fecal and plasma samples due to their biological impact, which has been associated with colon rectal cancer and fiber consumption. For these reasons, a fast, cost-effective, and reproducible analytical method is highly required. In this research, a gas chromatography-mass spectrometry method based on full scan and multiple reaction monitoring (MRM) acquisition modes were optimized and validated for the analysis of short-chain and medium-chain fatty acids in three biological samples: human fecal water, fecal fermentation supernatants, and human plasma...
July 17, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28711265/feeding-a-concentrate-rich-in-rapeseed-oil-improves-fatty-acid-composition-and-flavor-in-norwegian-goat-milk
#2
R A Inglingstad, S Skeie, G E Vegarud, T G Devold, Y Chilliard, M Eknæs
Impaired quality due to a high content of free fatty acids (FFA) and off-flavors has caused challenges in the development of Norwegian goat milk products. The present study aimed to examine the effect of lipid-supplemented concentrates on milk fat content, fatty acid composition, FFA, lipoprotein lipase activity, sensory properties, and size of milk fat globules of goat milk. Thirty goats assigned to 3 experimental groups were fed different concentrates from 60 d in milk (DIM) until late lactation (230 DIM)...
July 12, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28710833/effect-of-cellobiose-supplementation-on-in-vitro-fermentation-activity-and-bacterial-numbers-of-porcine-inocula
#3
S N Heinritz, E Weiss, J Seifert, R Mosenthin, S Kuß, A G Degenhardt, T J Koch
In this in vitro study, the modified Hohenheim gas test (HGT) was applied to determine fermentation activity and bacterial composition of pig's faecal microbial inoculum using different concentrations of cellobiose. Incubation procedures included normal buffered and osmotic stress conditions (elevated medium salinity). After 24 hr of fermentation, production of gas, ammonia and short-chain fatty acid (SCFA) was measured, and the gene copy numbers of total bacteria, Lactobacillus spp., Bifidobacterium spp., Roseburia spp...
July 15, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/28707153/medium-chain-enriched-diacylglycerol-mce-dag-oil-decreases-body-fat-mass-in-mice-by-increasing-lipolysis-and-thermogenesis-in-adipose-tissue
#4
Haeun Kim, Jee-Hwan Choe, Jong Hun Choi, Hun Jung Kim, Soo Hyun Park, Moon Won Lee, Wooki Kim, Gwang-Woong Go
Medium chain fatty acid (MCFA) escapes the formation of chylomicrons in the small intestine, resulting in energy expenditure through beta-oxidation. Diacylglycerol (DAG) is susceptible to oxidation rather than being stored in the adipose tissue. This study was conducted to verify the effect of MCE-DAG oil on body fat mass in vivo. Male C57BL/6 mice were randomly assigned to four groups (n = 12) as follows: (1) normal diet (18% kcal from fat), (2) canola oil as a control (40% kcal from canola oil), (3) MCE-DAG10 (10% kcal from MCE-DAG + 30% kcal from canola oil), and (4) MCE-DAG20 (20% kcal from MCE-DAG + 20% kcal from canola oil)...
July 13, 2017: Lipids
https://www.readbyqxmd.com/read/28704610/effects-of-medium-and-long-chain-triacylglycerols-on-lipid-metabolism-and-gut-microbiota-composition-in-c57bl-6j-mice
#5
Shengmin Zhou, Yueqiang Wang, Jörg Jacoby, Yuanrong Jiang, Yaqiong Zhang, Liangli Lucy Yu
Obesity is related to an increasing risk of chronic diseases. Medium- and long-chain triacylglycerols (MLCT) have been recognized as a promising choice to reduce body weight. In this study, three MLCT with different contents of medium-chain fatty acids (MCFA) (10%-30%, w/w) were prepared, and their effects on lipid metabolism and fecal gut microbiota composition of C57BL/6J mice were systematically investigated. MLCT with 30% (w/w) MCFA showed the best performance in decreasing body weight gain as well as optimizing serum lipid parameters and liver triacylglycerol content...
July 13, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28696788/investigation-of-medium-chain-fatty-acid-feed-supplementation-for-reducing-salmonella-typhimurium-colonization-in-turkey-poults
#6
Nicholas P Evans, David A Collins, Frank William Pierson, Hassan M Mahsoub, Nammalwar Sriranganathan, Mike E Persia, Theodore Peter Karnezos, Michael D Sims, Rami A Dalloul
Studies indicate that persistent Salmonella colonization occurs in poultry that are infected early in life, leading to both food safety and public health concerns. Development of improved preharvest Salmonella management strategies is needed to reduce poultry product contamination. The objective of this study was to evaluate the efficacy of a product containing medium chain fatty acids (MCFA) for reducing early Salmonella colonization in turkey poults. Day-of-hatch turkeys were provided a standard starter diet supplemented with MCFA at 0 (negative and positive controls), 1...
July 11, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28693220/remodeling-of-energy-metabolism-by-a-ketone-body-and-medium-chain-fatty-acid-suppressed-the-proliferation-of-ct26-mouse-colon-cancer-cells
#7
Yui Kadochi, Shiori Mori, Rina Fujiwara-Tani, Yi Luo, Yukiko Nishiguchi, Shingo Kishi, Kiyomu Fujii, Hitoshi Ohmori, Hiroki Kuniyasu
Normal and cancerous cells are suggested to have differential utilization of fatty acids and ketone bodies, which could be exploited in cancer therapy. The present study examined the effect of 3-hydroxybutyric acid (3-HBA), which is a ketone body generating acetyl-CoA, and lauric acid (LAA, C12:0), which is a medium-chain saturated fatty acid translocated to mitochondria in a carnitine-independent manner to produce acetyl-CoA, on the energy metabolism of mouse CT26 colon cancer cells. In CT26 cells expressing 3-HBA and LAA transporters, 3-HBA and LAA reduced cell proliferation, mitochondrial volume and lactate production, and increased oxidative stress, particularly in low-glucose conditions...
July 2017: Oncology Letters
https://www.readbyqxmd.com/read/28691159/establishment-of-a-hepatocyte-line-for-studying-biosynthesis-of-long-chain-polyunsaturated-fatty-acids-from-a-marine-teleost-the-white-spotted-spinefoot-siganus-canaliculatus
#8
Y Liu, Q H Zhang, Y W Dong, C H You, S Q Wang, Y Q Li, Y Y Li
A hepatocyte line was established from the liver of white-spotted spinefoot Siganus canaliculatus to study the biosynthesis of long-chain polyunsaturated fatty acids (LC-PUFA). The cells from the line, designated S. canaliculatus hepatocyte line (SCHL), grew and multiplied well in Dulbecco's modified Eagle's medium (DMEM)-F12 medium supplemented with 20 mM 4-(2-hydroxyethyl) piperazine-1-ethanesulphonic acid (HEPES), 10% foetal bovine serum (FBS) and 0·5% rainbow trout Oncorhychus mykiss serum at 28° C, showing an epithelial-like morphology and the normal chromosome number of 48 (2n) and have been subcultured for over 60 passages...
July 9, 2017: Journal of Fish Biology
https://www.readbyqxmd.com/read/28689308/triheptanoin-a-rescue-therapy-for-cardiogenic-shock-in-carnitine-acylcarnitine-translocase-deficiency
#9
Sidharth Mahapatra, Amitha Ananth, Nancy Baugh, Mihaela Damian, Gregory M Enns
Carnitine-acylcarnitine translocase (CACT) deficiency is a rare long-chain fatty acid oxidation disorder (LC-FAOD) with high mortality due to cardiomyopathy or lethal arrhythmia. Triheptanoin (UX007), an investigational drug composed of synthetic medium odd-chain triglycerides, is a novel therapy in development for LC-FAOD patients. However, cases of its safe and efficacious use to reverse severe heart failure in CACT deficiency are limited. Here, we present a detailed report of an infant with CACT deficiency admitted in metabolic crisis that progressed into severe cardiogenic shock who was successfully treated by triheptanoin...
July 9, 2017: JIMD Reports
https://www.readbyqxmd.com/read/28682459/neuronal-decanoic-acid-oxidation-is-markedly-lower-than-that-of-octanoic-acid-a-mechanistic-insight-into-the-medium-chain-triglyceride-ketogenic-diet
#10
Aziza Khabbush, Michael Orford, Yi-Chen Tsai, Tricia Rutherford, Maura O'Donnell, Simon Eaton, Simon J R Heales
OBJECTIVE: The medium-chain triglyceride (MCT) ketogenic diet contains both octanoic (C8) and decanoic (C10) acids. The diet is an effective treatment for pharmacoresistant epilepsy. Although the exact mechanism for its efficacy is not known, it is emerging that C10, but not C8, interacts with targets that can explain antiseizure effects, for example, peroxisome proliferator-activated receptor-γ (eliciting mitochondrial biogenesis and increased antioxidant status) and the α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor...
July 6, 2017: Epilepsia
https://www.readbyqxmd.com/read/28653932/influence-of-water-soluble-channeling-agents-on-the-release-of-diclofenac-sodium-from-irvingia-malayana-wax-matrix-tablets
#11
Songwut Yotsawimonwat, Suporn Charumanee, Sayam Kaewvichit, Jakkapan Sirithunyalug, Panee Sirisa-Ard, Sirivipa Piyamongkol, Kulthawat Siangwong
Irvingia malayana wax (IW) is majorly composed of esters of medium chain fatty acids. Its melting point is low and closed to the body temperature. This study aimed at investigating the potential of IW as a matrix-forming agent and evaluate the effect of soluble channeling agents on the release of diclofenac sodium (DS) from IW matrix tablets. The preformulation study by infrared spectroscopy and differential scanning calorimetry showed no incompatibility between IW and DS or soluble channeling agents, namely PEG 4000, PEG 6000 and lactose...
May 2017: Pakistan Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28652540/the-study-of-ghrelin-secretion-and-acyl-modification-using-mice-and-ghrelinoma-cell-lines
#12
Ichiro Sakata, Zhi Gong, Chika Ikenoya, Shota Takemi, Takafumi Sakai
Ghrelin is a peptide hormone with a unique structure comprising a medium chain fatty acid modification. Ghrelin cells are known to be abundantly localized in the gastric mucosa and are released into the blood stream to exert their multifunctional physiological effects. To elucidate the regulatory mechanisms of ghrelin secretion and acyl-modification, we developed novel ghrelin-producing cell lines. Using ghrelinoma cell lines, we focused on the mechanisms of ghrelin secretion and found that several GPCRs were highly expressed in ghrelin cells...
2017: Endocrine Journal
https://www.readbyqxmd.com/read/28638093/fatty-acid-composition-and-phospholipid-types-used-in-infant-formulas-modifies-the-establishment-of-human-gut-bacteria-in-germ-free-mice
#13
Rikke Guldhammer Nejrup, Tine Rask Licht, Lars Ingvar Hellgren
Human milk fat contains high concentrations of medium-chained fatty acids (MCFA) and triacylglycerols emulsified by a sphingomyelin-rich phospholipid membrane (milk phospholipids, MPL). Infant formula comprises mainly long-chained fatty acids (LCFA) emulsified with dairy proteins and soy lecithin (SL) lacking sphingomyelin. Sphingomyelin content and saturation level of phospholipids affect the gut lipase activity, which alters the concentrations of lipid hydrolysis products in ileum and colon, and hereby putatively affects the competitive advantage of specific gut bacteria...
June 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28632178/an-increased-dietary-supply-of-medium-chain-fatty-acids-during-early-weaning-in-rodents-prevents-excessive-fat-accumulation-in-adulthood
#14
Bert J M van de Heijning, Annemarie Oosting, Diane Kegler, Eline M van der Beek
Medium-chain fatty acids (MCFA) are a directly and readily absorbed source of energy. Exposure early-in-life to increased MCFA levels might affect development and impact (lipid) metabolism later in life. We tested whether an increased MCFA intake early-in-life positively affects adult body composition and metabolic status when challenged by a western-style diet (WSD). Male offspring of C57Bl/6j mice and Wistar rats were fed a control diet (CTRL; 10 w% fat, 14% MCFA) or a medium-chain triglycerides (MCT) diet with 20% MCFA until postnatal (PN) day 42, whereupon animals were fed a WSD (10 w% fat) until PN day 98...
June 20, 2017: Nutrients
https://www.readbyqxmd.com/read/28631820/dietary-intake-of-structured-lipids-with-different-contents-of-medium-chain-fatty-acids-on-obesity-prevention-in-c57bl-6j-mice
#15
Shengmin Zhou, Yueqiang Wang, Yuanrong Jiang, Zhongfei Zhang, Xiangjun Sun, Liangli Lucy Yu
Three medium- and long-chain triacylglycerols (MLCT) with different contents of medium-chain fatty acids (MCFA) (10% to 30%, w/w) were prepared and evaluated for their anti-obesity potential in C57BL/6J mice. The group fed with a high fat diet of MLCT containing 30% (w/w) MCFA showed significantly decreased body weight and fat mass (P < 0.05) relative to the control mice fed an obesity-inducing high fat rapeseed oil diet. In addition, serum parameters including triacylglycerols, total cholesterol, glucose, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, apolipoprotein A1 and apolipoprotein B in the treatment group fed with 30% (w/w) MCFA were close to those of mice fed with a low fat rapeseed oil diet, but significantly different (P < 0...
June 20, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28631813/high-fat-diet-attenuates-hyperglycemia-body-composition-changes-and-bone-loss-in-male-streptozotocin-induced-type-1-diabetic-mice
#16
Adriana Lelis Carvalho, Victoria E DeMambro, Anyonya R Guntur, Phuong Le, Kenichi Nagano, Roland Baron, Francisco José Albuquerque de Paula, Katherine J Motyl
There is a growing and alarming prevalence of obesity and the metabolic syndrome in type I diabetic patients (T1DM), particularly in adolescence. In general, low bone mass, higher fracture risk and increased marrow adipose tissue (MAT) are features of diabetic osteopathy in insulin deficient subjects. On the other hand, type 2 diabetes (T2DM) is associated with normal or high bone mass, a greater risk of peripheral fractures and no change in MAT. Therefore, we sought to determine the effect of weight gain on bone turnover in insulin deficient mice...
June 20, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28622455/intestinal-metabolites-are-profoundly-altered-in-the-context-of-hla-b27-expression-and-functionally-modulate-disease-in-a-rat-model-of-spondyloarthropathy
#17
Mark Asquith, Sean Davin, Patrick Stauffer, Claire Michell, Cathleen Janowitz, Phoebe Lin, Joe Ensign-Lewis, Jason M Kinchen, Dennis R Koop, Jim Rosenbaum
Objective HLA-B27 associated spondyloarthropathies are associated with an altered intestinal microbiota and bowel inflammation. Therefore, we sought to identify B27-dependent changes in both host and microbial metabolites in the HLA-B27/β2m rat and whether microbiota-derived metabolites could impact disease in this major model of spondyloarthropathy. Methods Cecal contents were collected from 6wk (pre-diseased) and 16wk (diseased) Fischer 344 HLA-B27/β2m transgenic rats and WT controls. Metabolomic profiling was performed by high-throughput gas- and liquid-chromatography-based mass spectrometry...
June 16, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/28618384/a-fatty-acid-solvent-of-switchable-miscibility
#18
Qianqian Chen, Lei Wang, Gaihuan Ren, Qian Liu, Zhenghe Xu, Dejun Sun
Ion pair interactions were explored to design a fatty acid solvent of switchable miscibility with water. Fatty acids of medium length chains are immiscible with water but become miscible with water when ion pairs are formed with amines. The ion pairs become phase separated after bubbling CO2 into the solution due to the dissociation of the fatty acid-amine complexes. Ion pairs of caprylic acid (C8) and low toxic poly(oxypropylene) diamine (Jeffamine D-230) were characterized by FT-IR and (1)H NMR. Log Kow values and surface activity were used to understand the switchable solvent mechanism in removing and recovering oily contaminants...
June 7, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28615636/autotransporter-domain-dependent-enzymatic-analysis-of-a-novel-extremely-thermostable-carboxylesterase-with-high-biodegradability-towards-pyrethroid-pesticides
#19
Xianghai Cai, Wei Wang, Lin Lin, Dannong He, Gang Huang, Yaling Shen, Wei Wei, Dongzhi Wei
The EstPS1 gene, which encodes a novel carboxylesterase of Pseudomonas synxantha PS1 isolated from oil well-produced water, was cloned and sequenced. EstPS1 has an open reading frame of 1923 bp and encodes the 640-amino acid carboxylesterase (EstPS1), which contains an autotransporter (AT) domain (357-640 amino acids). Homology analysis revealed that EstPS1 shared the highest identity (88%) with EstA from Pseudomonas fluorescens A506 (NCBI database) and belonged to the carboxylesterase family (EC 3.1.1.1). The optimum pH and temperature of recombinant EstPS1 were found to be 8...
June 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28608940/association-between-resistance-to-erythropoiesis-stimulating-agents-and-carnitine-profile-in-patients-on-maintenance-hemodialysis
#20
Daigo Kamei, Ken Tsuchiya, Kosaku Nitta, Michio Mineshima, Takashi Akiba
OBJECTIVE: Patients on dialysis are in a chronic carnitine-deficient state. This condition may be associated with abnormalities in fatty acid and organic acid metabolism; however, the details are unknown. We investigated the association between carnitine profiles before and after dialysis and the erythropoiesis-stimulating agent (ESA) resistance index (ERI), which is a significant prognostic factor in patients on maintenance hemodialysis. DESIGN AND METHODS: cross-sectional study...
June 13, 2017: Nephrology
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