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Short-chain fatty acids

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https://www.readbyqxmd.com/read/27911482/meat-quality-and-intramuscular-fatty-acid-composition-of-catria-horse
#1
Maria Federica Trombetta, Francesco Nocelli, Marina Pasquini
In order to extend scientific knowledge on autochthonous Italian equine meat, the physical-chemical parameters of Catria Horse Longissimus thoracis (LT) muscle and its nutritional characteristics have been investigated. Ten steaks of Catria foal raised at pasture and fattened indoors for 2 months were dissected, and LT muscle was analyzed for chemical composition, total iron, drip loss, colorimetric characteristics, intramuscular fat, fatty acid profile and nutritional indexes. Steak dissection showed that LT muscle accounted for 36...
December 2, 2016: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/27909555/effect-of-dual-type-oligosaccharides-on-constipation-in-loperamide-treated-rats
#2
Sung Hee Han, Ki Bae Hong, Eun Young Kim, So Hyun Ahn, Hyung Joo Suh
BACKGROUND/OBJECTIVES: Constipation is a condition that can result from intestinal deformation. Because humans have an upright posture, the effects of gravity can cause this shape deformation. Oligosaccharides are common prebiotics and their effects on bowel health are well known. However, studies of the physiological functionality of a product that contains both lactulose and galactooligosaccharides are insufficient. We investigated the constipation reduction effect of a dual-type oligosaccharide, Dual-Oligo, in loperamide-treated rats...
December 2016: Nutrition Research and Practice
https://www.readbyqxmd.com/read/27909428/rapid-fermentable-substance-modulates-interactions-between-ruminal-commensals-and-toll-like-receptors-in-promotion-of-immune-tolerance-of-goat-rumen
#3
Hong Shen, Zhongyan Lu, Zhan Chen, Yufeng Wu, Zanming Shen
Whether dietary non-fiber carbohydrate (NFC), a rapid fermentable substance, affects immune homeostasis of rumen through the modulation of interactions of ruminal microbiota and epithelial toll-like receptors (TLRs) remains unclear. A combination of 16S rRNA amplicon sequencing and quantitative PCRs was applied to study the synergetic responses of ruminal microbiota and epithelial TLRs to the dietary NFC switch from 15 to 31% in the goat model. The results showed that the 31% NFC diet caused the radical increases on the richness and diversity of rumen microbiota...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27907030/sensitive-and-simplified-detection-of-antibiotic-influence-on-the-dynamic-and-versatile-changes-of-fecal-short-chain-fatty-acids
#4
Xiaoya Zhao, Zhenzuo Jiang, Fan Yang, Yan Wang, Xiumei Gao, Yuefei Wang, Xin Chai, Guixiang Pan, Yan Zhu
Short-chain fatty acids (SCFAs), produced by anaerobic fermentation of mainly indigestible dietary carbohydrates by gut microbiota, have a profound influence on intestinal function and host energy metabolism. Antibiotics may seriously disturb the balance of fecal SCFAs. To evaluate the impacts of antibiotics on fecal SCFAs produced by gut microbiota, a simple, reproducible and accurate gas chromatography (GC) method, which can simultaneously analyze seven SCFAs in fecal samples, was developed and validated...
2016: PloS One
https://www.readbyqxmd.com/read/27905542/defining-an-olfactory-receptor-function-in-airway-smooth-muscle-cells
#5
William H Aisenberg, Jessie Huang, Wanqu Zhu, Premraj Rajkumar, Randy Cruz, Lakshmi Santhanam, Niranjana Natarajan, Hwan Mee Yong, Breann De Santiago, Jung Jin Oh, A-Rum Yoon, Reynold A Panettieri, Oliver Homann, John K Sullivan, Stephen B Liggett, Jennifer L Pluznick, Steven S An
Pathways that control, or can be exploited to alter, the increase in airway smooth muscle (ASM) mass and cellular remodeling that occur in asthma are not well defined. Here we report the expression of odorant receptors (ORs) belonging to the superfamily of G-protein coupled receptors (GPCRs), as well as the canonical olfaction machinery (Golf and AC3) in the smooth muscle of human bronchi. In primary cultures of isolated human ASM, we identified mRNA expression for multiple ORs. Strikingly, OR51E2 was the most highly enriched OR transcript mapped to the human olfactome in lung-resident cells...
December 1, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27905109/a-lethal-neonatal-phenotype-of-mitochondrial-short-chain-enoyl-coa-hydratase-1-deficiency
#6
F Al Mutairi, H E Shamseldin, M Alfadhel, R J Rodenburg, F S Alkuraya
Short-chain enoyl-CoA hydratase (SCEH) is a mitochondrial enzyme involved in the oxidation of fatty acids and the catabolic pathway of valine and, to a lesser extent, isoleucine. Deficiency of this enzyme was recently shown to cause an early childhood Leigh syndrome phenotype. The few reported patients were compound heterozygotes for two missense or missense with truncating variants in ECHS1 that encodes SCEH. We describe two siblings with severe refractory lactic acidosis and death within the first 2 days of life...
October 13, 2016: Clinical Genetics
https://www.readbyqxmd.com/read/27902774/intravenous-treatment-with-a-long-chain-omega-3-lipid-emulsion-provides-neuroprotection-in-a-murine-model-of-ischemic-stroke-a-pilot-study
#7
Dirk Berressem, Konrad Koch, Nicole Franke, Jochen Klein, Gunter P Eckert
Single long-chain omega-3 fatty acids (e.g. docosahexaenoic acid (DHA) or eicosapentaenoic acid (EPA)) are known for their neuroprotective properties associated with ischemic stroke. This pilot study aimed to test the effectiveness of an acute treatment with a long-chain omega-3 lipid emulsion (Omegaven 10%®, OGV) that contains fish oil (DHA 18 mg/ml; EPA 21 mg/ml) and α-tocopherol (0.2 mg/ml) in a transient middle cerebral artery occlusion (MCAO) model of ischemic stroke in mice. For this purpose, female CD-1 mice were anesthetized and subjected to 90 minutes of MCAO...
2016: PloS One
https://www.readbyqxmd.com/read/27902265/oharaeibacter-diazotrophicus-gen-nov-sp-nov-a-diazotrophic-and-facultatively-methylotrophic-bacterium-isolated-from-rice-rhizosphere
#8
Haoxin Lv, Sachiko Masuda, Yoshiko Fujitani, Nurettin Sahin, Akio Tani
A new facultative methanol-utilizing bacterial strain SM30T was isolated from rice rhizosphere. Strain SM30T was Gram-stain negative, aerobic, motile, short rod, and grows optimally at pH 7 and at 28°C. It can tolerate 0 to 2% concentration of NaCl. Based on 16S rRNA gene sequence comparisons, strain SM30T was most closely related to Pleomorphomonas oryzae DSM 16300T, with low similarity of 94.17%. As one of the lanthanide metals, lanthanum could enhance its growth on methanol slightly. Phylogenetic trees based on mxaF, xoxF, and cpn60 genes of SM30T showed its distinct phylogenetic positions with known species...
November 14, 2016: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/27902241/description-of-lactobacillus-colini-sp-nov-isolated-from-northern-bobwhite-colinus-virginianus
#9
Michael Z Zhang, Ming Yang, Hongwen Su, Dale Rollins, Shuping Zhang
Biochemical and molecular studies were performed on five unknown bacterial strains isolated from the intestinal contents of Northern Bobwhites (Colinus virginianus) collected from western Texas, USA. The strains were Gram-stain-positive, catalase-negative, non-spore-forming rods arranged in single cells, pairs or short chains. Colonies on Columbia blood agar are circular, flat, entire, approximately 0.5 - 1.5 mm in diameter and surrounded with a zone of alpha hemolysis at 48 h incubation at 37 °C. Colonies on MRS agar are umbonate with irregular edge, opaque and approximately 1 - 1...
October 28, 2016: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/27900260/gut-microbiota-and-glucometabolic-alterations-in-response-to-recurrent-partial-sleep-deprivation-in-normal-weight-young-individuals
#10
Christian Benedict, Heike Vogel, Wenke Jonas, Anni Woting, Michael Blaut, Annette Schürmann, Jonathan Cedernaes
OBJECTIVE: Changes to the microbial community in the human gut have been proposed to promote metabolic disturbances that also occur after short periods of sleep loss (including insulin resistance). However, whether sleep loss affects the gut microbiota remains unknown. METHODS: In a randomized within-subject crossover study utilizing a standardized in-lab protocol (with fixed meal times and exercise schedules), we studied nine normal-weight men at two occasions: after two nights of partial sleep deprivation (PSD; sleep opportunity 02:45-07:00 h), and after two nights of normal sleep (NS; sleep opportunity 22:30-07:00 h)...
December 2016: Molecular Metabolism
https://www.readbyqxmd.com/read/27899923/community-metabolome-correlations-of-gut-microbiota-from-child-turcotte-pugh-of-a-and-b-patients
#11
Xiao Wei, Shan Jiang, Xiangna Zhao, Huan Li, Weishi Lin, Boxing Li, Jing Lu, Yansong Sun, Jing Yuan
The gut flora are widely involved in the cometabolism with the host and have evident effects on the metabolic phenotype of host. This study performed a metabolome analysis of the intestinal microbiota specific for liver cirrhosis. The study population included patients with Child-Turcotte-Pugh score of A (AP, n = 5) and B (BP, n = 5), and control subjects (NM, n = 3). Metagenomic DNA from fecal microbiota was extracted followed by metagenomic sequencing through Illumina MiSeq high throughput sequencing of 16S rRNA regions...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27899916/estdz3-a-new-esterolytic-enzyme-exhibiting-remarkable-thermostability
#12
Dimitra Zarafeta, Zalan Szabo, Danai Moschidi, Hien Phan, Evangelia D Chrysina, Xu Peng, Colin J Ingham, Fragiskos N Kolisis, Georgios Skretas
Lipolytic enzymes that retain high levels of catalytic activity when exposed to a variety of denaturing conditions are of high importance for a number of biotechnological applications. In this study, we aimed to identify new lipolytic enzymes, which are highly resistant to prolonged exposure to elevated temperatures. To achieve this, we searched for genes encoding for such proteins in the genomes of a microbial consortium residing in a hot spring located in China. After performing functional genomic screening on a bacterium of the genus Dictyoglomus, which was isolated from this hot spring following in situ enrichment, we identified a new esterolytic enzyme, termed EstDZ3...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27899181/corrigendum-to-short-chain-fatty-acids-induce-ucp2-mediated-autophagy-in-hepatic-cells-biochem-biophys-res-commun-480-2016-461-467
#13
Liliana F Iannucci, Jingfeng Sun, Brijesh K Singh, Jin Zhou, Vincent A Kaddai, Antonia Lanni, Paul M Yen, Rohit A Sinha
No abstract text is available yet for this article.
November 26, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27898907/apparent-total-tract-macronutrient-digestibility-fecal-characteristics-and-fecal-fermentative-end-product-concentrations-of-healthy-adult-dogs-fed-bioprocessed-soy-protein
#14
A N Beloshapka, M R C de Godoy, K B Detweiler, M Newcomb, K H Ellegård, G C Fahey, K S Swanson
Animal proteins are commonly used in extruded dog foods. Plant-based proteins have a more consistent nutrient profile than animal sources but may contain antinutritional factors, including trypsin inhibitors and oligosaccharides. Bioprocessed soy protein (SP; HP-300; Hamlet Protein, Inc., Findlay, OH) is a processed soy-based product with low antinutritional factor concentrations and high protein quality. The objective was to evaluate the effects of SP on apparent total tract macronutrient digestibility, fecal characteristics, and fecal fermentative end products...
September 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27898903/intestinal-lactose-and-mineral-concentration-affect-the-microbial-ecophysiology-along-the-gastrointestinal-tract-of-formula-fed-neonatal-piglets
#15
R Pieper, W Vahjen, J Zentek
Hyperprolificacy in modern pig breeds has led to increased use of artificial rearing and formula feeding of neonatal piglets, which may change their intestinal bacterial ecophysiology. Here, newborn piglets ( = 8 per group) were fed a bovine milk-based formula (FO) or allowed to suckle their mothers (sow milk [SM]) for 2 wk, and digesta samples from the stomach, jejunum, and colon were subsequently analyzed for enzyme activities, bacterial metabolites, and 16S rRNA transcripts of bacterial groups by quantitative real-time PCR...
September 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27898895/effects-of-subacute-ruminal-acidosis-and-low-feed-intake-on-short-chain-fatty-acid-transporters-and-flux-pathways-in-holstein-steers
#16
A H Laarman, R-L A Pederzolli, K M Wood, G B Penner, B W McBride
The objective of this study was to investigate the role of protein-mediated transport pathways for short-chain fatty acid flux across the ruminal epithelium, using subacute ruminal acidosis (SARA) and feed restriction as models. Twenty-one Holstein steers (216.8 ± 31.4 kg BW) were individually housed and fed a total mixed ration (TMR) with a 50:50 forage:concentrate ad libitum for 5 d. After the 5 d diet adjustment period, calves were assigned 1 of 3 treatments: control (CTRL) calves were fed the TMR ad libitum on d 1, subacute ruminal acidosis calves were given 25% of their ad libitum DMI on d 1 and then given a barley grain challenge at 30% of ad libitum DMI on d2 (ACID) calves were given 25% of their ad libitum DMI on d 1 and then given a barley grain challenge at 30% of ad libitum DMI on d 2, and feed restriction (FR) calves were given 25% of their ad libitum DMI for 5 d...
September 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27897220/impact-of-the-microbial-derived-short-chain-fatty-acid-propionate-on-host-susceptibility-to-bacterial-and-fungal-infections-in-vivo
#17
Eleonora Ciarlo, Tytti Heinonen, Jacobus Herderschee, Craig Fenwick, Matteo Mombelli, Didier Le Roy, Thierry Roger
Short chain fatty acids (SCFAs) produced by intestinal microbes mediate anti-inflammatory effects, but whether they impact on antimicrobial host defenses remains largely unknown. This is of particular concern in light of the attractiveness of developing SCFA-mediated therapies and considering that SCFAs work as inhibitors of histone deacetylases which are known to interfere with host defenses. Here we show that propionate, one of the main SCFAs, dampens the response of innate immune cells to microbial stimulation, inhibiting cytokine and NO production by mouse or human monocytes/macrophages, splenocytes, whole blood and, less efficiently, dendritic cells...
November 29, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27892486/short-chain-fatty-acids-prevent-high-fat-diet-induced-obesity-in-mice-by-regulating-g-protein-coupled-receptors-and-gut-microbiota
#18
Yuanyuan Lu, Chaonan Fan, Ping Li, Yanfei Lu, Xuelian Chang, Kemin Qi
Elucidating the mechanisms by which short chain fatty acids (SCFA) reduce body weight may assist in the development of an effective weight control strategy. Dietary supplementation of acetate, propionate, butyrate or their admixture was shown to significantly inhibit the body weight gain induced by high-fat diet feeding. Supplementation of SCFAs caused significant changes in the expressions of G-protein coupled receptor 43 (GPR43) and GPR41 characterized by increases in the adipose tissue and reductions in the colon...
November 28, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27892410/short-term-no2-exposure-is-associated-with-long-chain-fatty-acids-in-prospective-cohorts-from-augsburg-germany-results-from-an-analysis-of-138-metabolites-and-three-exposures
#19
Cavin K Ward-Caviness, Susanne Breitner, Kathrin Wolf, Josef Cyrys, Gabi Kastenmüller, Rui Wang-Sattler, Alexandra Schneider, Annette Peters
BACKGROUND: Short-term exposure to air pollution is associated with morbidity and mortality. Metabolites are intermediaries in biochemical processes, and associations between air pollution and metabolites can yield unique mechanistic insights. METHODS: We used independent cross-sectional samples with targeted metabolomics (138 metabolites across five metabolite classes) from three cohort studies, each a part of the Cooperative Health Research in the Region of Augsburg (KORA)...
October 2016: International Journal of Epidemiology
https://www.readbyqxmd.com/read/27889684/human-milk-oligosaccharide-effects-on-intestinal-function-and-inflammation-after-preterm-birth-in-pigs
#20
Stine O Rasmussen, Lena Martin, Mette V Østergaard, Silvia Rudloff, Michael Roggenbuck, Duc Ninh Nguyen, Per T Sangild, Stine B Bering
: Human milk oligosaccharides (HMOs) may mediate prebiotic and anti-inflammatory effects in newborns. This is particularly important for preterm infants who are highly susceptible to intestinal dysfunction and necrotizing enterocolitis (NEC). We hypothesized that HMO supplementation of infant formula (IF) improves intestinal function, bacterial colonization and NEC resistance immediately after preterm birth, as tested in a preterm pig model. Mixtures of HMOs were investigated in intestinal epithelial cells and in preterm pigs (n=112) fed IF supplemented without (CON) or with a mixture of four HMOs (4-HMO) or >25 HMOs (25-HMO, 5-10 g/L given for 5 or 11 days)...
November 4, 2016: Journal of Nutritional Biochemistry
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