Read by QxMD icon Read


Xavier Mayali, Peter K Weber
To quantitatively link microbial identity with biogeochemical function, we carried out 14 simultaneous stable isotope probing experiments with organic and inorganic C and N substrates to measure the isotope incorporation by over one hundred co-occurring eukaryotic and prokaryotic populations in a coastal community. We found that nitrate was the most commonly incorporated substrate, and that light-driven carbon fixation was carried out by some bacterial taxa from the Flavobacteriales and OM60 (NOR5) clade, in addition to photoautotrophic phytoplankton...
March 19, 2018: FEMS Microbiology Ecology
G H Callejas, R L Figueira, F L L Gonçalves, F A P Volpe, A W Zuardi, J A Crippa, J E Hallak, L Sbragia
Gastroschisis (GS) is an abdominal wall defect that results in histological and morphological changes leading to intestinal motility perturbation and impaired absorption of nutrients. Due to its anti-inflammatory, antioxidant, and neuroprotective effects, cannabidiol (CBD) has been used as a therapeutic agent in many diseases. Our aim was to test the effect of maternal CBD in the intestine of an experimental model of GS. Pregnant rats were treated over 3 days with CBD (30 mg/kg) after the surgical induction of GS (day 18...
March 15, 2018: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
Claire Joachim, Laurène Mazeau
Modern law is composed dominantly of new fields of complex legislations such as biotechnologies laws, environmental laws or intellectual property. But a particular legal area stigmatizes more than the others this increasing complexity: the water protection laws.Due to its origins deeply established in the European culture, but also due to ethical, political, economical and social issues, water protection laws appear to be the typical representation of links between risk and complexity. The European water protection law is deeply complex on two scales...
October 13, 2017: Journal International de Bioéthique et D'éthique des Sciences
Mads N Olesen, Josefine R Christiansen, Steen Vang Petersen, Poul Henning Jensen, Wojciech Paslawski, Marina Romero-Ramos, Vanesa Sanchez-Guajardo
We have previously shown that immunological processes in the brain during α-synuclein-induced neurodegeneration vary depending on the presence or absence of cell death. This suggests that the immune system is able to react differently to the different stages of α-synuclein pathology. However, it was unclear whether these immune changes were governed by brain processes or by a direct immune response to α-synuclein modifications. We have herein locally increased the peripheral concentration of α-synuclein or its pathology-associated variants, nitrated or fibrillar, to characterize the modulation of the CD4 T cell pool by α-synuclein and brain microglia in the absence of any α-synuclein brain pathology...
January 2018: Heliyon
M Breida, S Alami Younssi, A Bouazizi, B Achiou, M Ouammou, M El Rhazi
In the framework of understanding the transport mechanism that governs the filtration of NO3 - solution through a γ -Al2 O3 membrane with a nominal pore size of 5 nm at low ultrafiltration, a series of various types of nitrate solutions and operating conditions were investigated. The effect of filtration parameters such as pH, applied pressure and NO3 - concentration on the selectivity and permeability of the membrane were studied using binary solutions (KNO3 , NaNO3 , Ca(NO3 )2 and Mg(NO3 )2 ) and ternary solutions ((NaNO3 + KNO3 ), (NaNO3 + Ca(NO3 )2 ) and (Mg(NO3 )2 + Ca(NO3 )2 )...
January 2018: Heliyon
Ouwei Wang, Ryan A Melnyk, Misha G Mehta-Kolte, Matthew D Youngblut, Hans K Carlson, John D Coates
Most dissimilatory perchlorate reducing bacteria (DPRB) are also capable of respiratory nitrate reduction, and preferentially utilize nitrate over perchlorate as a terminal electron acceptor. The similar domain architectures and phylogenetic relatedness of the nitrate and perchlorate respiratory complexes suggests a common evolutionary history and a potential for functionally redundant electron carriers. In this study, we identify key genetic redundancies in the electron transfer pathways from the quinone pool(s) to the terminal nitrate and perchlorate reductases in Azospira suillum PS (hereafter referred to as PS)...
2018: Frontiers in Microbiology
Cindy M T Van der Avoort, Luc J C Van Loon, Maria T E Hopman, Lex B Verdijk
Increased consumption of dietary nitrate increases plasma nitrate and nitrite concentrations, and has been shown to elicit cardio-protective effects and improve exercise performance. Nitrate consumption in the habitual diet is mainly dependent on nitrate-rich vegetables, such as green leafy and root vegetables, with total vegetable consumption accounting for approximately 50-85% of our daily nitrate intake. Whereas 'supplementation' with dietary nitrate in research studies has mainly been accomplished through the use of (concentrated) nitrate-rich beetroot juice, dietary strategies focusing on increased intake of nitrate-rich vegetables may represent a similarly effective alternative for increasing dietary nitrate intake and, as such, obtaining the associated cardiovascular health and ergogenic benefits...
March 20, 2018: European Journal of Clinical Nutrition
Karl-Anton Hiller, Wolfgang Buchalla, Isabel Grillmeier, Christina Neubauer, Gottfried Schmalz
This in vitro study evaluated the effect of toothpastes with different active ingredients on dentin permeability using an extended protocol including multiple applications and several thermal ageing cycles in the presence or absence of human saliva. The Null hypothesis was that dentin permeability of a hydroxyapatite containing toothpaste (BR), a potassium nitrate (SP) and an arginine and calcium carbonate (EH) containing toothpaste were similar. Dentin permeability was measured as hydraulic conductance using a commercially available capillary flow system (Flodec, Geneva) and results were expressed as % relative to matching controls...
March 20, 2018: Scientific Reports
Daniel A Bizjak, Daniel Jacko, Philipp Zimmer, Sebastian Gehlert, Wilhelm Bloch, Marijke Grau
Depending on the exercise variables and training design, resistance exercise can be applied to gain muscle mass, prevent diseases like osteoporosis and sarcopenia or generally increase strength capacity. But the influence on blood flow parameters and possible consequences in health and disease are less understood. To examine the possible impact of resistance exercise of different duration on hemorheology, oxidative stress and microvascular function, participants (n = 6) performed lower-limb resistance exercise of the quadriceps femoris...
March 17, 2018: Microvascular Research
Min Cheng, Guangming Zeng, Danlian Huang, Cui Lai, Yang Liu, Chen Zhang, Jia Wan, Liang Hu, Chengyun Zhou, Weiping Xiong
The presence of antibiotics in aquatic environments has attracted global concern. Fenton process is an attractive yet challenging method for antibiotics degradation, especially when such a reaction can be conducted at neutral pH values. In this study, a novel composite Fe/Co catalyst was synthesized via the modification of steel converter slag (SCS) by salicylic acid-methanol (SAM) and cobalt nitrate (Co(NO3 )2 ). The catalysts were characterized by N2 -Brunauer-Emmett-Teller (BET), X-ray diffraction (XRD), Fourier transform infrared (FT-IR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS)...
March 10, 2018: Water Research
Balaram Mohapatra, Pinaki Sar, Sufia Khannam Kazy, Mrinal Kumar Maiti, Tulasi Satyanarayana
Reductive transformation of toxic arsenic (As) species by As reducing bacteria (AsRB) is a key process in As-biogeochemical-cycling within the subsurface aquifer environment. In this study, we have characterized a Gram-stain-negative, non-spore-forming, rod-shaped As reducing bacterium designated KAs 5-3T, isolated from highly As-contaminated groundwater of India. Strain KAs 5-3T displayed high 16S rRNA gene sequence similarity to the members of the genus Pseudoxanthomonas, with P. mexicana AMX 26BT (99.25% similarity), P...
2018: PloS One
Jérôme Long, Dimitry M Lyubov, Tatyana V Mahrova, Anton V Cherkasov, Georgy K Fukin, Yannick Guari, Joulia Larionova, Alexander A Trifonov
We report on the synthesis, structure and investigation of magnetic properties of a series of six heteroleptic complexes of the general formula [Ln(Tpm)X3]·yMeCN (Tpm = tris(3,5-dimethylpyrazolyl)methane; Ln = Tb, Dy, Er; X- = NO3-, Cl- and y = 1 or 2). We demonstrate that the observation of a field-induced slow relaxation of magnetization is highly dependent on the anion's nature. While nitrate moieties appear to be suitable to stabilize the oblate electronic density of Dy3+, chloride ions generate an equatorial crystal-field allowing the slow relaxation of the prolate Er3+ ions...
March 20, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
Addisu Alemayehu Assegie, Ju-Hsiang Cheng, Li-Ming Kuo, Wei-Nien Su, Bing-Joe Hwang
The practical implementation of an anode-free lithium-metal battery with promising high capacity is hampered by dendrite formation and low coulombic efficiency. Most notably, these challenges stem from non-uniform lithium plating and unstable SEI layer formation on the bare copper electrode. Herein, we revealed the homogeneous deposition of lithium and effective suppression of dendrite formation using a copper electrode coated with a polyethylene oxide (PEO) film in an electrolyte comprising 1 M LiTFSI, DME/DOL (1/1, v/v) and 2 wt% LiNO3...
March 20, 2018: Nanoscale
Erika Salavarría, Sujay Paul, Patricia Gil-Kodaka, Gretty K Villena
To understand the physiological responses of the brown macroalga Macrocystis integrifolia during the marine tidal cycle, two RNA libraries were prepared from algal frond samples collected in the intertidal zone (0 m depth) and subtidal zone (10 m depth). Samples collected from intertidal zone during low tide was considered as abiotic stressed (MI0), while samples collected from subtidal zone was considered as control (MI10). Both RNA libraries were sequenced on Illumina NextSeq 500 which generated approx...
April 2018: 3 Biotech
Jaan Pärn, Jos T A Verhoeven, Klaus Butterbach-Bahl, Nancy B Dise, Sami Ullah, Anto Aasa, Sergey Egorov, Mikk Espenberg, Järvi Järveoja, Jyrki Jauhiainen, Kuno Kasak, Leif Klemedtsson, Ain Kull, Fatima Laggoun-Défarge, Elena D Lapshina, Annalea Lohila, Krista Lõhmus, Martin Maddison, William J Mitsch, Christoph Müller, Ülo Niinemets, Bruce Osborne, Taavi Pae, Jüri-Ott Salm, Fotis Sgouridis, Kristina Sohar, Kaido Soosaar, Kathryn Storey, Alar Teemusk, Moses M Tenywa, Julien Tournebize, Jaak Truu, Gert Veber, Jorge A Villa, Seint Sann Zaw, Ülo Mander
Nitrous oxide (N2 O) is a powerful greenhouse gas and the main driver of stratospheric ozone depletion. Since soils are the largest source of N2 O, predicting soil response to changes in climate or land use is central to understanding and managing N2 O. Here we find that N2 O flux can be predicted by models incorporating soil nitrate concentration (NO3 - ), water content and temperature using a global field survey of N2 O emissions and potential driving factors across a wide range of organic soils. N2 O emissions increase with NO3 - and follow a bell-shaped distribution with water content...
March 19, 2018: Nature Communications
Mark W Cunningham, Javier Castillo, Tarek Ibrahim, Denise C Cornelius, Nathan Campbell, Lorena Amaral, Venkata Ramana Vaka, Nathan Usry, Jan M Williams, Babbette LaMarca
Women with preeclampsia produce AT1-AA (agonistic autoantibodies to the angiotensin II type 1 receptor), which stimulate reactive oxygen species, inflammatory factors, and hypertensive mechanisms (ET [endothelin] and sFlt-1 [soluble fms-like tyrosine kinase-1]) in rodent models of preeclampsia. The placental ischemic reduced uterine perfusion pressure (RUPP) rat model of preeclampsia exhibits many of these features. In this study, we examined the maternal outcomes of AT1-AA inhibition ('n7AAc') in RUPP rats...
March 19, 2018: Hypertension
Annie R Knight, Emma Taylor, Roman Lukaszewski, Karina Tveen Jensen, Helen E Jones, Jane E Carré, Michail N Isupov, Jennifer A Littlechild, Stephen J Bailey, Emily Brewer, Timothy J McDonald, Andrew R Pitt, Corinne M Spickett, Paul G Winyard
The generation of 3-nitrotyrosine, within proteins, is a post-translational modification resulting from oxidative or nitrative stress. It has been suggested that this modification could be used as a biomarker for inflammatory diseases. Despite the superiority of mass spectrometry-based determinations of nitrotyrosine, in a high-throughput clinical setting the measurement of nitrotyrosine by an enzyme-linked immunosorbent assay (ELISA) is likely to be more cost-effective. ELISAs offer an alternative means to detect nitrotyrosine, but many commercially available ELISAs are insufficiently sensitive to detect nitrotyrosine in healthy human serum...
March 16, 2018: Free Radical Biology & Medicine
Jinshan Guo, Wei Sun, Jimin Peter Kim, Xili Lu, Qiyao Li, Min Lin, Oliver Mrowczynski, Elias B Rizk, Juange Cheng, Guoying Qian, Jian Yang
Tissue adhesives play an important role in surgery to close wounds, seal tissues, and stop bleeding, but existing adhesives are costly, cytotoxic, or bond weakly to tissue. Inspired by the water-resistant adhesion of plant-derived tannins, we herein report a new family of bioadhesives derived from a facile, one-step Michael addition of tannic acid and gelatin under oxidizing conditions and crosslinked by silver nitrate. The oxidized polyphenol groups of tannic acid enable wet tissue adhesion through catecholamine-like chemistry, while both tannic acid and silver nanoparticles reduced from silver nitrate provide antimicrobial sources inherent within the polymeric network...
March 16, 2018: Acta Biomaterialia
Liping Zhao, Qingxiang Meng, Yan Li, Hao Wu, Yunlong Huo, Xinzhuang Zhang, Zhenming Zhou
BACKGROUND: This study was conducted to examine effects of nitrate on ruminal methane production, methanogen abundance, and composition. Six rumen-fistulated Limousin×Jinnan steers were fed diets supplemented with either 0% (0NR), 1% (1NR), or 2% (2NR) nitrate (dry matter basis) regimens in succession. Rumen fluid was taken after two-week adaptation for evaluation of in vitro methane production, methanogen abundance, and composition measurements. RESULTS: Results showed that nitrate significantly decreased in vitro ruminal methane production at 6 h, 12 h, and 24 h (P < 0...
March 20, 2018: BMC Microbiology
Albert Herrero, Cayetano Gutiérrez-Cánovas, Olga Vigiak, Stefanie Lutz, Rohini Kumar, David Gampe, Verena Huber-García, Ralf Ludwig, Ramon Batalla, Sergi Sabater
Multiple abiotic stressors affect the ecological status of water bodies. The status of waterbodies in the Ebro catchment (NE Spain) is evaluated using the biological quality elements (BQEs) of diatoms, invertebrates and macrophytes. The multi-stressor influence on the three BQEs was evaluated using the monitoring dataset available from the catchment water authority. Nutrient concentrations, especially total phosphorus (TP), affected most of the analyzed BQEs, while changes in mean discharge, water temperature, or river morphology did not show significant influences...
March 10, 2018: Science of the Total Environment
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"