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Propionate

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https://www.readbyqxmd.com/read/29771345/sucrose-metabolism-alters-lactobacillus-plantarum-survival-and-interactions-with-the-microbiota-in-the-digestive-tract
#1
Xiaochen Yin, Dustin D Heeney, Yanin Tab Srisengfa, Shin-Yu Chen, Carolyn M Slupsky, Maria L Marco
We investigated whether sucrose metabolism by probiotic Lactobacillus plantarum influences the intestinal survival and microbial responses to this organism when administered to mice fed a sucrose-rich, Western diet. A L. plantarum mutant unable to metabolize sucrose was constructed by deleting scrB, coding for beta-fructofuranosidase, in a rifampicin-resistant strain of L. plantarum NCIMB8826. The ScrB deficient mutant survived in 8-fold higher numbers compared to the wild-type strain when measured 24 h after administration on two consecutive days...
May 16, 2018: FEMS Microbiology Ecology
https://www.readbyqxmd.com/read/29770722/patients-preferences-for-different-corticosteroid-vehicles-are-highly-variable
#2
Kayla Felix, Emily Unrue, Meyene Inyang, Leah A Cardwell, Elias Oussedik, Irma Richardson, Steven R Feldman
INTRODUCTION: Topical corticosteroids, available in an array of vehicles are used to control a variety of inflammatory skin diseases. Patients' preferences for different vehicles may affect their willingness to use treatment. We assess corticosteroid vehicle preference and potential impact of topical characteristics on adherence and quality of life in patients with psoriasis. METHODS: Subjects with psoriasis were recruited from Wake Forest University Dermatology Clinic...
May 17, 2018: Journal of Dermatological Treatment
https://www.readbyqxmd.com/read/29770190/effects-of-molecular-hydrogen-dissolved-alkaline-electrolyzed-water-on-intestinal-environment-in-mice
#3
Yasuki Higashimura, Yasunori Baba, Ryo Inoue, Tomohisa Takagi, Kazuhiko Uchiyama, Katsura Mizushima, Yasuko Hirai, Chihiro Ushiroda, Yoshinori Tanaka, Yuji Naito
Increasing evidence indicates that molecular hydrogen-dissolved alkaline electrolyzed water (AEW) has various physiological activities such as antioxidative activity. Gut microbiota are deeply associated with our health through a symbiotic relationship. Recent reports have described that most gastrointestinal microbial species encode the genetic capacity to metabolize molecular hydrogen, meaning that molecular hydrogen might affect the gut microbial composition. Nevertheless, AEW effects on gut microbiota remain unknown...
January 2018: Medical Gas Research
https://www.readbyqxmd.com/read/29770108/gc-ms-analysis-of-the-ruminal-metabolome-response-to-thiamine-supplementation-during-high-grain-feeding-in-dairy-cows
#4
Fuguang Xue, Xiaohua Pan, Linshu Jiang, Yuming Guo, Benhai Xiong
Introduction: Thiamine is known to attenuate high-concentrate diet induced subacute ruminal acidosis (SARA) in dairy cows, however, the underlying mechanisms remain unclear. Objectives: The major objective of this study was to investigate the metabolic mechanisms of thiamine supplementation on high-concentrate diet induced SARA. Methods: Six multiparous, rumen-fistulated Holstein cows were used in a replicated 3 × 3 Latin square design...
2018: Metabolomics: Official Journal of the Metabolomic Society
https://www.readbyqxmd.com/read/29767123/influence-of-feeding-crimped-kernel-maize-silage-on-the-course-of-subclinical-necrotic-enteritis-in-a-broiler-disease-model
#5
Nisha Sharma, Samir Ranjitkar, Nishchal K Sharma, Ricarda M Engberg
This experiment was carried out with 375 male broilers (Ross 308) from days 1 to 28 to evaluate the influence of crimped kernel maize silage (CKMS) on the manifestation of subclinical necrotic enteritis, microbiota counts, organic acid production and relative weights of gastrointestinal segments. A necrotic enteritis disease model was applied. Birds were allocated into 3 different dietary treatments: a maize-based feed (MBF, control diet), and 2 diets supplemented with 15% (CKMS15) or 30% (CKMS30) of crimped ensiled kernel maize...
December 2017: Animal nutrition
https://www.readbyqxmd.com/read/29766432/cl-initiated-photo-oxidation-reactions-of-methyl-propionate-in-atmospheric-condition
#6
Ramya Cheramangalath Balan, Rajakumar Balla
Cl-initiated photo-oxidation reaction of methyl propionate was investigated experimentally using relative rate method. Gas chromatography/mass spectrometry (GC-MS) and GC/infrared spectroscopy (GC-IR) were used as analytical tools to follow the concentrations of reactants and products during reaction. The gas-phase kinetics of methyl propionate with Cl atoms was measured over the temperature range of 263-363 K at 760 Torr in N2 atmosphere using C2 H6 and C2 H4 as reference compounds. The temperature-dependent rate coefficient for the reaction of methyl propionate with Cl atom was obtained as k(T) = [(3...
May 15, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29762736/comparative-transcriptome-analysis-of-rumen-papillae-in-suckling-and-weaned-japanese-black-calves-using-rna-sequencing
#7
Koki Nishihara, Daichi Kato, Yutaka Suzuki, Dahye Kim, Misato Nakano, Yu Yajima, Satoshi Haga, Miwa Nakano, Hiroshi Ishizaki, Ryouka Kawahara-Miki, Tomohiro Kono, Kazuo Katoh, Sang-Gun Roh
The length and density of rumen papillae starts to increase during weaning and growth of ruminants. This significant development increases the intraruminal surface area and the efficiency of VFA (acetate, propionate, butyrate, etc.) uptake. Thus, it is important to investigate the factors controlling the growth and development of rumen papillae during weaning. This study aimed to compare the transcriptomes of rumen papillae in suckling and weaned calves. Total RNA was extracted from the rumen papillae of 10 male Japanese Black calves (5 suckling calves, 5 wk old; 5 weaned calves, 15 wk old) and used in RNA-sequencing...
May 12, 2018: Journal of Animal Science
https://www.readbyqxmd.com/read/29762726/supplementation-with-organic-acids-showing-different-effects-on-growth-performance-gut-morphology-and-microbiota-of-weaned-pigs-fed-with-highly-or-less-digestible-diets
#8
S Li, J Zheng, K Deng, L Chen, X L Zhao, X M Jiang, Z F Fang, L Q Che, S Y Xu, B Feng, J Li, Y Lin, Y Y Wu, Y M Han, De Wu
Two studies were conducted to evaluate the effects of organic acid (OA) supplementation in a highly digestible (Exp. 1) or a less digestible diet (Exp. 2) on the growth performance and intestinal health of weaned pigs. In Exp. 1, a total of 240 pigs weaned at day 21 were assigned to one of five dietary treatments: negative control (NC) (basal diet, 3,000 ppm ZnO in the first 2 weeks only); positive control (PC) (NC plus 10 mg/kg zinc bacitracin, 5 mg/kg colistin sulfate, and 5 mg/kg olaquindox); OA1 (NC plus a 0...
May 11, 2018: Journal of Animal Science
https://www.readbyqxmd.com/read/29758151/clinical-effects-of-stabilized-stannous-fluoride-dentifrice-in-reducing-plaque-microbial-virulence-ii-metabonomic-changes
#9
Michael Cannon, Deepa Khambe, Malgorzata Klukowska, David L Ramsey, Melanie Miner, Tom Huggins, Donald J White
OBJECTIVES: The clinical effects of stannous fluoride (SnF2) dentifrice in reducing symptoms of gingivitis and reducing the virulence of subgingival plaque through suppression of activation of gene expression in toll receptor based reporter cells were previously reported. This study expanded analysis of the clinical study to include evaluation of dentifrice effects on salivary metabolites using 1H Nuclear Magnetic Resonance (1H NMR) systems biology-based metabonomics. METHODS: The clinical design was reported previously (J Clin Dent2017;28:16-26)...
March 2018: Journal of Clinical Dentistry
https://www.readbyqxmd.com/read/29757613/confocal-raman-microscopy-for-in-situ-measurement-of-phospholipid-water-partitioning-into-model-phospholipid-bilayers-within-individual-chromatographic-particles
#10
Jay P Kitt, David A Bryce, Shelley D Minteer, Joel M Harris
The phospholipid-water partition coefficient is a commonly measured parameter that correlates with drug efficacy, small-molecule toxicity, and accumulation of molecules in biological systems in the environment. Despite the utility of this parameter, methods for measuring phospholipid-water partition coefficients are limited. This is due to the difficulty of making quantitative measurements in vesicle membranes or supported phospholipid bilayers, both of which are small-volume phases that challenge the sensitivity of many analytical techniques...
May 14, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29753976/denitrifying-sulfur-conversion-associated-ebpr-effects-of-temperature-and-carbon-source-on-anaerobic-metabolism-and-performance
#11
Gang Guo, Di Wu, George A Ekama, Tianwei Hao, Hamish Robert Mackey, Guanghao Chen
The recently developed Denitrifying Sulfur conversion-associated Enhanced Biological Phosphorus Removal (DS-EBPR) process has demonstrated simultaneous removal of organics, nitrogen and phosphorus with minimal sludge production in the treatment of saline/brackish wastewater. Its performance, however, is sensitive to operating and environmental conditions. In this study, the effects of temperature (20, 25, 30 and 35 °C) and the ratio of influent acetate to propionate (100-0, 75-25, 50-50, 25-75 and 0-100%) on anaerobic metabolism were investigated, and their optimal values/controls for performance optimization were identified...
April 16, 2018: Water Research
https://www.readbyqxmd.com/read/29753867/topiramate-mitigates-3-nitropropionic-acid-induced-striatal-neurotoxicity-via-modulation-of-ampa-receptors
#12
Heba N Shalaby, Dalia M El-Tanbouly, Hala F Zaki
Prevalence of glutamate receptor subunit 2 (GluR2)-lacking alpha-amino-3-hydroxy-5-methyl-4-isoxazole propionic acid (AMPA) receptors is a hallmark of excitotoxicity-related neurodegenerative diseases. Topiramate (TPM) is a structurally novel anticonvulsant with a well-known modulatory effects on AMPA/kainate subtypes of glutamate receptors. The present study aimed at investigating the neuroprotective potential of TPM on 3-nitropropionic acid (3-NP)-induced striatal neurodegeneration and Huntington's disease-like symptoms...
May 10, 2018: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29753326/biosynthesis-of-angelyl-coa-in-saccharomyces-cerevisiae
#13
Roberta Callari, David Fischer, Harald Heider, Nora Weber
BACKGROUND: The angelic acid moiety represents an essential modification in many biologically active products. These products are commonly known as angelates and several studies have demonstrated their therapeutic benefits, including anti-inflammatory and anti-cancer effects. However, their availability for use in the development of therapeutics is limited due to poor extraction yields. Chemical synthesis has been achieved but its complexity prevents application, therefore microbial production may offer a promising alternative...
May 12, 2018: Microbial Cell Factories
https://www.readbyqxmd.com/read/29752568/morphology-ultrastructure-and-chemical-compounds-of-the-osmeterium-of-heraclides-thoas-lepidoptera-papilionidae
#14
Luis Carlos Martínez, Angelica Plata-Rueda, Guilherme da Silva Neves, Jamile Fernanda Cossolin, Marcelo Henrique Dos Santos, José Cola Zanuncio, José Eduardo Serrão
The osmeterium, found in papilionoid larvae, is an eversible organ with an exocrine gland that produces substances in response to the mechanical disturbances caused by natural enemies. The anatomy, histology and ultrastructure of the osmeterium, and the chemical composition of its secretion in Heraclides thoas (Lepidoptera: Papilionidae) were studied. Heraclides thoas larvae have a Y-shaped osmeterium in the thorax. The surface of the osmeterium has a rough cuticle lining cells with papillae and irregular folds, whereas the cells that limited the gland pores are irregular, folded, and devoid of papillae...
May 11, 2018: Protoplasma
https://www.readbyqxmd.com/read/29750329/biodegradation-of-lignin-monomers-vanillic-p-coumaric-and-syringic-acid-by-the-bacterial-strain-sphingobacterium-sp-hy-h
#15
Jinxing Wang, Jidong Liang, Sha Gao
Many bacterial strains have been demonstrated to biodegrade lignin for contaminant removal or resource regeneration. The goal of this study was to investigate the biodegradation amount and associated pathways of three lignin monomers, vanillic, p-coumaric, and syringic acid by strain Sphingobacterium sp. HY-H. Vanillic, p-coumaric, and syringic acid degradation with strain HY-H was estimated as 88.71, 76.67, and 72.78%, respectively, after 96 h. Correspondingly, the same three monomers were associated with a COD removal efficiency of 87...
May 10, 2018: Current Microbiology
https://www.readbyqxmd.com/read/29745350/resistant-starch-reduces-large-intestinal-ph-and-promotes-fecal-lactobacilli-and-bifidobacteria-in-pigs
#16
B U Metzler-Zebeli, N Canibe, L Montagne, J Freire, P Bosi, J A M Prates, S Tanghe, P Trevisi
Dietary resistant starch (RS) may have prebiotic properties but its effects on fermentation and the microbial population are inconsistent. This meta-analysis aimed to quantify the relationship between RS type 2 (RS2) and intestinal short-chain fatty acids (SCFA) and pH as well as certain key bacterial taxa for intestinal health in pigs. From the 24 included articles with sufficient information about the animal, and dietary and physiological measurements published between 2000 and 2017, individual sub-data sets for fermentation metabolites, pH, bacterial abundances and apparent total tract digestibility were built and used to parameterize prediction models on the effect of RS2, accounting for inter- and intra-study variability...
May 10, 2018: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/29742293/glycemic-status-affects-the-subgingival-microbiome-of-diabetic-patients
#17
Priscila Larcher Longo, Shareef Dabdoub, Purnima Kumar, Hilana Paula Carillo Artese, Sergio Atala Dib, Giuseppe Alexandre Romito, Marcia Pinto Alves Mayer
AIM: Periodontitis is correlated with type 2 diabetes mellitus (T2DM), but little is known about glycemic status effect on subgingival microbiota associated with periodontitis. This study evaluated if periodontal microbiome of T2DM patients is affected by glycemic status. MATERIALS AND METHODS: 21 T2DM non-smoking patients with chronic periodontitis and body mass index ≤40kg/m2 were allocated into two groups according to systemic glycemic status: inadequate (DMI- HbA1c≥8%) and adequate (DMA- HbA1c<7...
May 9, 2018: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/29742146/prolonged-restraint-stressor-exposure-in-outbred-cd-1-mice-impacts-microbiota-colonic-inflammation-and-short-chain-fatty-acids
#18
Ross M Maltz, Jeremy Keirsey, Sandra C Kim, Amy R Mackos, Raad Z Gharaibeh, Cathy C Moore, Jinyu Xu, Vasudevan Bakthavatchalu, Arpad Somogyi, Michael T Bailey
Stressor-exposure has been shown to exacerbate inflammation and change the composition of the gastrointestinal microbiota; however stressor-induced effects on microbiota-derived metabolites and their receptors are unknown. Thus, bacterial-produced short chain fatty acids (SCFAs), as well as microbial community composition, were assessed in the colons of mice exposed to stress during infection with Citrobacter rodentium. Mice were exposed to overnight restraint on 7 consecutive nights, or left undisturbed as a control...
2018: PloS One
https://www.readbyqxmd.com/read/29740883/effect-of-oak-quercus-persica-acorn-level-on-apparent-digestibility-ruminal-fermentation-nitrogen-balance-and-urinary-purine-derivatives-in-pregnant-goats
#19
H Jafari, F Fatahnia, A Khatibjoo, G Taasoli, H Fazaeli, S Varmaghany
The aim of this experiment was to investigate the effect of dietary oak (Quercus persica) acorn (OA) level on dry matter intake (DMI), apparent nutrient digestibility, nitrogen (N) utilization, ruminal fermentation, protozoa population and urinary purine derivatives (PD) during the last 60 days of goat pregnancy. Twenty-four multiparous pregnant goats (41.7 ± 2.3 kg BW) were assigned to one of three experimental diets consisted of control diet (C, without OA) and diets containing 20 (OA20 ) or 40 g/100 g of OA (OA40 ) on a DM basis in a completely randomized block design...
May 8, 2018: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/29740459/3d-structures-of-plant-phytochrome-a-as-pr-and-pfr-from-solid-state-nmr-implications-for-molecular-function
#20
Chen Song, Maria Andrea Mroginski, Christina Lang, Jakub Kopycki, Wolfgang Gärtner, Jörg Matysik, Jon Hughes
We present structural information for oat phyA3 in the far-red-light-absorbing (Pfr) signaling state, to our knowledge the first three-dimensional (3D) information for a plant phytochrome as Pfr. Solid-state magic-angle spinning (MAS) NMR was used to detect interatomic contacts in the complete photosensory module [residues 1-595, including the NTE (N-terminal extension), PAS ( P er/ A rnt/ S im), GAF (c G MP phosphodiesterase/ a denylyl cyclase/ F hlA) and PHY ( phy tochrome-specific) domains but with the C-terminal PAS repeat and transmitter-like module deleted] auto-assembled in vitro with 13 C- and 15 N-labeled phycocyanobilin (PCB) chromophore...
2018: Frontiers in Plant Science
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