Showing 1-30 of 338 results for "09684"
Kensuke Nakamura et al.
The American journal of emergency medicine, 31(10), 1486-1489 (2013-09-07)
It is known that patients with convulsion often present hyperammonemia. The elevation of ammonia levels in convulsion is considered to occur along with extensive muscle contractions, but the details remain unclear. In emergency pathologies, such as cardiopulmonary arrest or hemorrhagic...
Marilyn Huckans et al.
Brain and behavior, 4(2), 123-142 (2014-04-01)
BackgroundThe purpose of this study was to characterize hepatitis C virus (HCV)-associated differences in the expression of 47 inflammatory factors and to evaluate the potential role of peripheral immune activation in HCV-associated neuropsychiatric symptoms-depression, anxiety, fatigue, and pain. An additional...
Kristina N Farrugia et al.
Organic & biomolecular chemistry, 13(6), 1662-1672 (2014-12-03)
Four model thiosemicarbazide anion chemosensors containing three N-H bonds, substituted with phenyl and/or 4-nitrophenyl units, were synthesised and studied for their anion binding abilities with hydroxide, fluoride, acetate, dihydrogen phosphate and chloride. The anion binding properties were studied in DMSO...
Martin Ferus et al.
Proceedings of the National Academy of Sciences of the United States of America, 112(3), 657-662 (2014-12-10)
The coincidence of the Late Heavy Bombardment (LHB) period and the emergence of terrestrial life about 4 billion years ago suggest that extraterrestrial impacts could contribute to the synthesis of the building blocks of the first life-giving molecules. We simulated...
Junlong Tian et al.
Scientific reports, 5, 8025-8025 (2015-01-27)
A carbon-matrix nickel composite magnetoplasmonic film with a 3D sub-micron periodic triangular roof-type antireflection structure (SPTAS) was fabricated via a simple and promising method that combines chemosynthesis with biomimetic techniques. The Troides helena (Linnaeus) forewing (T_FW) was chosen as the...
Franziska Janusch et al.
Environmental toxicology and pharmacology, 38(3), 792-799 (2014-10-13)
The application of antibiotics including fluoroquinolones to farming animals is widespread and may lead to the development of antibiotic resistance and other environmental effects. To calculate environmental loads and for a proper risk assessment it is necessary to determine the...
Patricia A Wright et al.
Respiratory physiology & neurobiology, 184(3), 231-240 (2012-08-23)
In this review we pose the following seven questions related to ammonia and fish that represent gaps in our knowledge. 1. How is ammonia excretion linked to sodium uptake in freshwater fish? 2. How much does branchial ammonia excretion in...
James T Hollibaugh et al.
The ISME journal, 8(3), 685-698 (2013-10-18)
We used a combination of metatranscriptomic analyses and quantitative PCR (qPCR) to study seasonal changes in Thaumarchaeota populations from a salt marsh-dominated estuary. Surface waters (0.5 m depth) were sampled quarterly at Marsh Landing, Sapelo Island, GA, USA over a 3-year...
Matthew Di Rago et al.
Forensic science international, 243, 35-43 (2014-05-06)
The aim of this study was to develop an LC-MS/MS based screening technique that covers a broad range of acidic and neutral drugs and poisons by combining a small sample volume and efficient extraction technique with simple automated data processing....
J Claros et al.
Water science and technology : a journal of the International Association on Water Pollution Research, 67(11), 2587-2594 (2013-06-12)
Ammonia-oxidizing bacteria (AOB) are very sensitive to environmental conditions and wastewater treatment plant operational parameters. One of the most important factors affecting their activity is pH. Its effect is associated with: NH3/NH4(+) and HNO2/NO2(-) chemical equilibriums and biological reaction rates....
James F Staff et al.
Toxicology letters, 231(2), 270-276 (2014-09-28)
Whole blood is the established matrix for biological monitoring of inorganic lead; however blood sampling is an invasive procedure. Saliva offers a potential non-invasive alternative. This study determines lead in whole blood and saliva. A novel method for saliva sampling...
Cheng-Chung Chou
Cytotechnology, 66(5), 853-860 (2013-08-31)
Although the insect cell/baculovirus system is an important expression platform for recombinant protein production, our understanding of insect cell metabolism with respect to enhancing cell growth capability and productivity is still limited. Moreover, different host insect cell lines may have...
Natalie Cortes et al.
Life sciences, 122, 42-50 (2014-12-23)
Amaryllidaceae alkaloids exhibit a wide range of physiological effects, of which the acetylcholinesterase (AChE) inhibitory activity is the most relevant. However, scientific evidence related to their neuroprotective effectiveness against glutamate-induced toxicity has been lacking. Thus, the purpose of this study...
Peng Yu et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 21(8), 3249-3256 (2015-02-03)
Nanostructured iron compounds as lithium-ion-battery anode material have attracted considerable attention with respect to improved electrochemical energy storage and excellent specific capacity, so lots of iron-based composites have been developed. Herein, a novel composite composed of three-dimensional Fe2 N@C microspheres...
Stefanie Banik et al.
Infection and immunity, 81(7), 2309-2317 (2013-04-17)
Depletion of arginine is a recognized strategy that pathogens use to evade immune effector mechanisms. Depletion depends on microbial enzymes such as arginases, which are considered virulence factors. The effect is mostly interpreted as being a consequence of successful competition...
Su-Jin Hwang et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 21(15), 5872-5878 (2015-02-26)
Pure and palladium-loaded Co3O4 hollow hierarchical nanostructures consisting of nanosheets have been prepared by solvothermal self-assembly. The nanostructures exhibited an ultrahigh response and selectivity towards p-xylene and toluene. The responses (resistance ratio) of the palladium-loaded Co3O4 hollow hierarchical nanostructures to...
Dietary liposoluble antioxidants protect mouse immune cells from the toxic effects of atmospheric ammonia.
S B Parfenyuk et al.
Doklady biological sciences : proceedings of the Academy of Sciences of the USSR, Biological sciences sections, 449, 113-115 (2013-05-09)
Louise S Dalbøge et al.
The Journal of pharmacology and experimental therapeutics, 350(2), 353-360 (2014-06-07)
Antidiabetic treatments aiming to preserve or even to increase β-cell mass are currently gaining increased interest. Here we investigated the effect of chronic treatment with the novel glucagon-like peptide-1 (GLP-1)-gastrin dual agonist ZP3022 (HGEGTFTSDLSKQMEEEAVRLFIEWLKN-8Ado-8Ado-YGWLDF-NH2) on glycemic control, β-cell mass and...
Montserrat Pérez Navarro et al.
Proceedings of the National Academy of Sciences of the United States of America, 110(39), 15561-15566 (2013-09-12)
The assignment of the two substrate water sites of the tetra-manganese penta-oxygen calcium (Mn4O5Ca) cluster of photosystem II is essential for the elucidation of the mechanism of biological O-O bond formation and the subsequent design of bio-inspired water-splitting catalysts. We...
Leandro R Soria et al.
FEBS letters, 588(9), 1686-1691 (2014-03-20)
We recently reported that hepatocyte mitochondrial aquaporin-8 (mtAQP8) channels facilitate the uptake of ammonia and its metabolism into urea. Here we studied the effect of bacterial lipopolysaccharides (LPS) on ammonia-derived ureagenesis. In LPS-treated rats, hepatic mtAQP8 protein expression and diffusional...
Bodhisattwa Banerjee et al.
Indian journal of experimental biology, 52(7), 728-738 (2014-07-26)
Effect of environmental hypertonicity, due to exposure to 300 mM mannitol solution for 7 days, on the induction of ureogenesis and also on amino acid metabolism was studied in the air-breathing walking catfish, C. batrachus, which is already known to...
Anita Aranyi et al.
Journal of chromatography. A, 1387, 123-133 (2015-02-18)
The direct separation of the enantiomers of 1-(α-aminoarylmethyl)-2-naphthol, 1-(α-aminoalkyl)-2-naphthol, 2-(α-aminoarylmethyl)-1-naphthol analogues and 2-(1-amino-2-methylpropyl)-1-naphthol) was investigated in supercritical fluid chromatography. Five commercially available chiral stationary phases based on immobilized polysaccharide chiral selectors (Chiralpak IA, IB, IC, ID and IE) were evaluated....
Dhiraj Patil et al.
Journal of enzyme inhibition and medicinal chemistry, 30(2), 229-239 (2014-06-19)
Asthma is multifaceted disease where many targets contribute towards its development and progression. Among these, adenosine receptor subtypes play a major role. MCD-KV-10, a novel thiazolo-thiophene was designed and evaluated pre-clinically for its implication in management of asthma. This compound...
Stilianos Fodelianakis et al.
Applied and environmental microbiology, 80(13), 3784-3792 (2014-04-22)
A common source of disturbance for coastal aquatic habitats is nutrient enrichment through anthropogenic activities. Although the water column bacterioplankton communities in these environments have been characterized in some cases, changes in α-diversity and/or the abundances of specific taxonomic groups...
Meng Li et al.
Molecular immunology, 65(1), 113-122 (2015-02-07)
The parasitic dinoflagellates in the genus of Hematodinium infect broad range of crustaceans around the world, causing fatal diseases in multiple species of wild and cultured crabs and subsequent economic loss. In order to explore this host-parasite interaction in the...
Margret I Moré et al.
Advances in therapy, 31(12), 1247-1262 (2014-11-22)
We report previously unpublished, early pilot studies performed with a brain-health food supplement containing a proprietary blend of 100 mg phosphatidylserine (PS) and 80 mg phosphatidic acid (PA) produced from soy lecithin. Serum analysis after single PS+PA ingestion was performed in healthy...
Chengsong Zhang et al.
Ecotoxicology and environmental safety, 104, 209-214 (2014-04-15)
Ridgetail white prawn (Exopalaemon carinicauda), a commercially important species in China, is a potential candidate for evaluating impairments caused by environmental pollutants in coastal and estuarine areas. The main purpose of the present study was to investigate the acute effects...
M D Norenberg et al.
Journal of bioenergetics and biomembranes, 36(4), 303-307 (2004-09-21)
Ammonia is a neurotoxin that predominantly affects astrocytes. Disturbed mitochondrial function and oxidative stress, factors implicated in the induction of the mitochondrial permeability transition (MPT), appear to be involved in the mechanism of ammonia neurotoxicity. We have recently shown that...
Remco A Koster et al.
Therapeutic drug monitoring, 36(1), 35-45 (2013-09-28)
To facilitate the monitoring of drug abuse by patients, a method was developed and validated for fast and highly selective screening for amphetamine, methamphetamine, 3,4-methylenedioxymethamphetamine, methylenedioxyamphetamine, methylenedioxyethylamphetamine, methylphenidate, cocaine, benzoylecgonine, morphine, codeine, heroin, 6-monoacteylmorphine, methadone, 2-ethylidene-1,5-dimethyl-3,3-diphenylpyrrolidine, nicotine, and cotinine in...
Ruihua Li et al.
Water science and technology : a journal of the International Association on Water Pollution Research, 67(12), 2761-2767 (2013-06-22)
The efficacy of iron(II) sulfide (FeS)-based autotrophic denitrification in simultaneous nitrogen and phosphorus removal from wastewater was studied with batch experiments. It was efficient at a wide pH range of 5-9, and temperature range of 10-40 °C. The concentrations of...

Social Media

LinkedIn icon
Twitter icon
Facebook Icon
Instagram Icon

Merck

Research. Development. Production.

We are a leading supplier to the global Life Science industry with solutions and services for research, biotechnology development and production, and pharmaceutical drug therapy development and production.

© 2021 Merck KGaA, Darmstadt, Germany and/or its affiliates. All Rights Reserved.

Reproduction of any materials from the site is strictly forbidden without permission.