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https://www.readbyqxmd.com/read/28344574/health-associated-niche-inhabitants-as-oral-probiotics-the-case-of-streptococcus-dentisani
#1
Arantxa López-López, Anny Camelo-Castillo, María D Ferrer, Áurea Simon-Soro, Alex Mira
Oral diseases, including dental caries and periodontitis, are among the most prevalent diseases worldwide and develop as a consequence of a microbial dysbiosis. Several bacterial strains are being tested as potential oral health-promoting organisms, but usually they are species isolated from niches other than the site where they must exert its probiotic action, typically from fecal samples. We hypothesize that oral inhabitants associated to health conditions will be more effective than traditional, gut-associated probiotic species in key aspects such as colonization of the oral site where disease takes place or the possession of oral health promoting functions, as well as more practical issues like safety and toxicity, and establishing proper doses for administration...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28343393/selenium-bioaccessibility-and-speciation-in-selenium-enriched-lettuce-investigation-of-the-selenocompounds-liberated-after-in-vitro-simulated-human-digestion-using-two-dimensional-hplc-icp-ms
#2
Emanueli DO Nascimento DA Silva, Federica Aureli, Marilena D'Amato, Andrea Raggi, Solange Cadore, Francesco Cubadda
The evaluation of selenium-enriched vegetables as potential dietary sources of selenium, an essential element for humans, requires an assessment of the plant accumulation ability as well as of the bioaccessibility and speciation of the accumulated selenium, which influence its biological effects in humans. Lettuce hydroponically grown at three selenite (SeVI)/selenate (SeIV) amendment levels was characterized accordingly. Selenium accumulation in lettuce leaves was greatest with Se(VI) amendment, whereas bioaccessibility was 70% on average in both cases...
March 27, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28343020/selenium-speciation-influences-bioaccumulation-in-limnodynastes-peronii-tadpoles
#3
C M Lanctôt, S D Melvin, T Cresswell
Despite being essential for animal health and fitness, Se has a relatively narrow range between deficiency and toxicity, and excess Se can cause a variety of adverse effects in aquatic organisms. Amphibians are particularly vulnerable to contaminants during larval aquatic life stage, because they can accumulate toxic ions through various routes including skin, gills, lungs and digestive tract. Few attempts have been made to understand the tissue-specific accumulation of trace elements, including the impacts of chemical speciation in developing amphibian larvae...
March 12, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/28342710/emerging-role-of-chemoprotective-agents-in-the-dynamic-shaping-of-plasma-membrane-organization
#4
REVIEW
Natividad R Fuentes, Michael L Salinas, Eunjoo Kim, Robert S Chapkin
In the context of an organism, epithelial cells by nature are designed to be the defining barrier between self and the outside world. This is especially true for the epithelial cells that form the lining of the digestive tract, which absorb nutrients and serve as a barrier against harmful substances. These cells are constantly bathed by a complex mixture of endogenous (bile acids, mucus, microbial metabolites) and exogenous (food, nutrients, drugs) bioactive compounds. From a cell biology perspective, this type of exposure would directly impact the plasma membrane, which consists of a myriad of complex lipids and proteins...
March 22, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28342598/effect-of-undigested-neutral-detergent-fiber-content-of-alfalfa-hay-on-lactating-dairy-cows-feeding-behavior-fiber-digestibility-and-lactation-performance
#5
M Fustini, A Palmonari, G Canestrari, E Bonfante, L Mammi, M T Pacchioli, G C J Sniffen, R J Grant, K W Cotanch, A Formigoni
The objective of this study was to investigate the effects of 2 alfalfa hays differing in undigested neutral detergent fiber content and digestibility used as the main forage source in diets fed to high producing cows for Parmigiano-Reggiano cheese production. Diets were designed to have 2 different amounts of undigestible NDF [high (Hu) and low (Lu)], as determined by 240-h in vitro analysis (uNDF240). Alfalfa hay in vitro digestibility [% of amylase- and sodium sulfite-treated NDF with ash correction (aNDFom)] at 24 and 240 h was 40...
March 22, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28342421/seasonal-and-soil-type-dependent-emissions-of-nitrous-oxide-from-irrigated-desert-soils-amended-with-digested-poultry-manures
#6
Roy Posmanik, Ali Nejidat, Ofer Dahan, Amit Gross
Expansion of dryland agriculture requires intensive supplement of organic fertilizers to improve the fertility of nutrient-poor desert soils. The environmental impact of organic supplements in hot desert climates is not well understood. We report on seasonal emissions of nitrous oxide (N2O) from sand and loess soils, amended with limed and non-limed anaerobic digestate of poultry manure in the Israeli Negev desert. All amended soils had substantially higher N2O emissions, particularly during winter applications, compared to unammended soils...
March 22, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28342340/cellulose-decomposition-and-larval-biomass-production-from-the-co-digestion-of-dairy-manure-and-chicken-manure-by-mini-livestock-hermetia-illucens-l
#7
Kashif Ur Rehman, Minmin Cai, Xiaopeng Xiao, Longyu Zheng, Hui Wang, Abdul Aziz Soomro, Yusha Zhou, Wu Li, Ziniu Yu, Jibin Zhang
World trends toward the modern dairies intensification on large production units cause massive animal manure production and accumulation. Improper handling of manure produced by industrial farm operation greatly deteriorates the major environmental media including air, water and soil. The black soldier fly utilizes organic waste and converts it into larvae biomass to be used as livestock feed and into residues to be used as bio-fertilizer. However, due to the high ratio of cellulose, hemicellulose and lignin in dairy manure, this conversion is difficult...
March 22, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28342325/development-of-a-rapid-matrix-digestion-technique-for-ultrastructural-analysis-of-elastic-fibers-in-the-intervertebral-disc
#8
Javad Tavakoli, John J Costi
Collagen and elastic fibers are two major fibrous constituents of the annulus fibrosus (AF) in the disc that contribute to its mechanical and viscoelastic properties. It was thought that elastic fibers play no substantial role in the function and properties of the disc as these fibers were irregularly distributed. Studies that have revealed highly organized elastic fibers with different regional orientation and distribution, while being strongly crosslinked with matrix, suggesting their contribution to disc structure-function properties...
March 21, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28341045/exogenous-%C3%AE-mannanase-improves-feed-conversion-efficiency-and-reduces-somatic-cell-count-in-dairy-cattle
#9
T A Tewoldebrhan, J A D R N Appuhamy, J-J Lee, M Niu, S Seo, S Jeong, E Kebreab
Exogenous fibrolytic enzymes have been shown to be a promising way to improve feed conversion efficiency (FCE). β-Mannanase is an important enzyme digesting the polysaccharide β-mannan in hemicellulose. Supplementation of diets with β-mannanase to improve FCE has been more extensively studied in nonruminants than in ruminants. The objective of this study was to investigate the effects of β-mannanase supplementation on nutrient digestibility, FCE, and nitrogen utilization in lactating Holstein dairy cows...
January 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28340737/efficient-extraction-of-low-abundance-peptides-from-digested-proteins-and-simultaneous-exclusion-of-large-sized-proteins-with-novel-hydrophilic-magnetic-zeolitic-imidazolate-frameworks
#10
Man Zhao, Yiqin Xie, Hemei Chen, Chunhui Deng
Zeolitic imidazolate frameworks (ZIFs) are composed of tetrahedral transition metal ions and imidazolate type organic linkers. This kind of metal organic frameworks (MOFs) combines the unique properties of both zeolites and MOFs. Furthermore, ZIFs can be assembled under mild biocompatible conditions. These advantages make them be primarily studied for biochemical analysis. In this work, polydopamine-modified hydrophilic magnetic ZIFs were synthesized in a simple and mild way for the efficient extraction of low-abundance peptides...
May 15, 2017: Talanta
https://www.readbyqxmd.com/read/28339654/daily-alcohol-consumption-and-sickness-absence-in-the-gazel-cohort
#11
Sophie Morois, Guillaume Airagnes, Cédric Lemogne, Annette Leclerc, Frédéric Limosin, Stephen Goldberg, Eléonore Herquelot, Marcel Goldberg, Marie Zins
: Previous studies that examined the association between daily alcohol consumption and sickness absences (SA) were mostly retrospective and did not take into account the characteristics of SA.  : A total of 9907 daily drinkers (8442 men and 1465 women) of the GAZEL prospective cohort were included. Daily alcohol consumption over the three previous years was self-reported at baseline and categorized as low, moderate, high or very high risk according to the World Health Organization. Duration of SA (short: ≤7 days; moderate: 8-28; long: >28) was collected from administrative records as well as causes for long SA...
February 17, 2017: European Journal of Public Health
https://www.readbyqxmd.com/read/28337804/endo-2017-weo-s-successful-first-world-congress-of-gi-endoscopy
#12
EDITORIAL
Jean-François Rey
For more than 50 years, the World Endoscopy Organization (WEO) has promoted the study and advancement of digestive endoscopy around the globe. Our key efforts have been to promote education and training in digestive endoscopy, and to forge close links with the the WEO zones: Asian Pacific Society of Digestive Endoscopy (A-PSDE), European Society of Gastrointestinal Endoscopy (ESGE), and Inter-American Society of Digestive Endoscopy (SIED). With increased interaction and connectivity between different global regions, our goal to support the advancement of endoscopy in underserved areas of the world has been strengthened...
March 24, 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/28337571/effects-of-feeding-ground-pods-of-enterolobium-cyclocarpum-jacq-griseb-on-dry-matter-intake-rumen-fermentation-and-enteric-methane-production-by-pelibuey-sheep-fed-tropical-grass
#13
S Albores-Moreno, J A Alayón-Gamboa, A J Ayala-Burgos, F J Solorio-Sánchez, C F Aguilar-Pérez, L Olivera-Castillo, J C Ku-Vera
An experiment was carried out to determine the effect of supplementing ground pods of Enterolobium cyclocarpum in a basal ration of Pennisetum purpureum grass on feed intake, rumen volatile fatty acids (VFAs), and protozoa and methane (CH4) production by hair sheep. Four male sheep (Pelibuey × Katahdin) with a mean live weight of 27.0 kg (SD ± 0.5) were supplemented with 0.00, 0.15, 0.30, and 0.45 kg of dry matter (DM) of E. cyclocarpum pods daily; equivalent to 0.00, 4.35, 8.70, and 13.05 g of crude saponins, respectively...
March 23, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28335097/effects-of-dietary-forage-to-concentrate-ratio-on-nutrient-digestibility-and-enteric-methane-production-in-growing-goats-capra-hircus-hircus-and-sika-deer-cervus-nippon-hortulorum
#14
Youngjun Na, Dong Hua Li, Sang Rak Lee
Two experiments were conducted to determine the effects of forage-to-concentrate (F:C) ratio on the nutrient digestibility and enteric methane (CH4) emission in growing goats and Sika deer. Three male growing goats (BW = 19.0 ± 0.7 kg) and three male growing deer (BW = 19.3 ± 1.2 kg) were respectively allotted to a 3 × 3 Latin square design with an adaptation period of 7 d and a data collection period of 3 d. Respiration-metabolism chambers were used for measuring the enteric CH4 emission. Treatments of low (25:75), moderate (50:50), and high (73:27) F:C ratios were given to both goats and Sika deer...
March 21, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28334663/microbial-communities-change-in-an-anaerobic-digestion-after-application-of-microbial-electrolysis-cells
#15
Beom Lee, Jun-Gyu Park, Won-Beom Shin, Dong-Jie Tian, Hang-Bae Jun
Microbial electrolysis cells (MECs) are being studied to improve the efficiency of anaerobic digesters and biogas production. In the present study, we investigated the effects of electrochemical reactions in AD-MEC (anaerobic digester combined with MECs) on changes in the microbial communities of bulk sludge through 454-pyrosequencing analysis, as well as the effect of these changes on anaerobic digestion. Methanobacterium beijingense and Methanobacterium petrolearium were the dominant archaeal species in AD, while Methanosarcina thermophila and Methanobacterium formicicum were dominant in AD-MEC at steady-state...
February 8, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28333045/the-manureecomine-pilot-installation-advanced-integration-of-technologies-for-the-management-of-organics-and-nutrients-in-livestock-waste
#16
Cristina Pintucci, Marta Carballa, Sam Varga, Jimena Sarli, Lai Peng, Johannes Bousek, Chiara Pedizzi, Maël Ruscalleda, Elena Tarragó, Delphine Prat, Giovanni Colica, Merijn Picavet, Joop Colsen, Oscar Benito, Marilos Balaguer, Sebastià Puig, Juan M Lema, Jesús Colprim, Werner Fuchs, Siegfried E Vlaeminck
Manure represents an exquisite mining opportunity for nutrient recovery (nitrogen and phosphorus), and for their reuse as renewable fertilisers. The ManureEcoMine proposes an integrated approach of technologies, operated in a pilot-scale installation treating swine manure (83.7%) and Ecofrit(®) (16.3%), a mix of vegetable residues. Thermophilic anaerobic digestion was performed for 150 days, the final organic loading rate was 4.6 kgCOD m(-3) d(-1), with a biogas production rate of 1.4 Nm(3) m(-3) d(-1). The digester was coupled to an ammonia side-stream stripping column and a scrubbing unit for free ammonia inhibition reduction in the digester, and nitrogen recovery as ammonium sulphate...
March 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28332683/tailoring-adsorption-induced-phase-transitions-in-the-pillared-layer-type-metal-organic-framework-dut-8-ni
#17
Negar Kavoosi, Volodymyr Bon, Irena Senkovska, Simon Krause, Cesare Atzori, Francesca Bonino, Julia Pallmann, Silvia Paasch, Eike Brunner, Stefan Kaskel
Tailoring the characteristics of gating transitions in the porous network, Ni2(ndc)2dabco (ndc = 2,6-naphthalenedicarboxylate, dabco = 1,4-diazabicyclo[2.2.2]octane), also termed DUT-8(Ni) (DUT = Dresden University of Technology), was achieved by systematically adjusting the critical synthesis parameters. The impact of the starting composition and solvent mixtures in the synthesis was found to critically affect the guest-response properties of the obtained materials. A comprehensive set of physical characterization methods, namely thermal analysis, (1)H NMR of digested crystals, solid state (13)C NMR, PXRD, SEM, IR and Raman spectroscopy shows that the crystallite size is a crucial factor, determining the differing characteristics such as "gate pressure" and adsorption capacity in the guest-responsive switching behaviour of DUT-8...
March 23, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28330142/an-overview-of-physico-chemical-mechanisms-of-biogas-production-by-microbial-communities-a-step-towards-sustainable-waste-management
#18
REVIEW
Ramansu Goswami, Pritam Chattopadhyay, Arunima Shome, Sambhu Nath Banerjee, Amit Kumar Chakraborty, Anil K Mathew, Shibani Chaudhury
Biogas is a combination of methane, CO2, nitrogen, H2S and traces of few other gases. Almost any organic waste can be biologically transformed into biogas and other energy-rich organic compounds through the process of anaerobic digestion (AD) and thus helping in sustainable waste management. Although microbes are involved in each step of AD, knowledge about those microbial consortia is limited due to the lack of phylogenetic and metabolic data of predominantly unculturable microorganisms. However, culture-independent methods like PCR-based ribotyping has been successfully employed to get information about the microbial consortia involved in AD...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28328067/diminishing-returns-limit-energetic-costs-of-climate-change
#19
Ofir Levy, Jason D Borchert, Travis W Rusch, Lauren B Buckley, Michael J Angilletta
Changes in the time available for organisms to maintain physiologically preferred temperatures (thermal opportunity) is a primary mechanism by which climate change impacts the fitness and population dynamics of organisms. Yet, it is unclear whether losses or gains in thermal opportunity result in proportional changes in rates of energy procurement and use. We experimentally quantified lizard food consumption and energy assimilation at different durations of thermal opportunity. We incorporated these data in an individual-based model of foraging and digestion in lizards to explore the implications of nonlinear responses to shifts in thermal opportunity across a wide geographic range...
March 22, 2017: Ecology
https://www.readbyqxmd.com/read/28320620/effect-of-fe-0-addition-on-volatile-fatty-acids-evolution-on-anaerobic-digestion-at-high-organic-loading-rates
#20
Xin Kong, Shuyao Yu, Shuang Xu, Wen Fang, Jianguo Liu, Huan Li
Excessive acidification frequently occurs in the anaerobic digestion of the organic fraction of municipal solid waste (OFMSW) at high organic loading rates (OLR), due to the accumulation of non-acetic volatile fatty acids (VFA). In this study, the performance of Fe(0) in enhancing various VFA production and metabolism was investigated. The butyric acid concentration in a high OLR reactor with Fe(0) addition decreased from 7200 to 0mg/L after a short lag phase, and the total VFA (TVFA) concentration also decreased substantially...
March 17, 2017: Waste Management
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