Results 31 to 40 of about 34,317 (228)

Effects of Monovalent and Divalent Cations on Ca2+ Fluxes Across Chromaffin Secretory Membrane Vesicles [PDF]

, 1983
: Bovine chromaffin secretory vesicle ghosts loaded with Na+ were found to take up Ca2+ when incubated in K+ media or in sucrose media containing micromolar concentrations of free Ca2+. Li+- or choline+loaded ghosts did not take up Ca2+.
Baker P. F., Borle A. B., Carafoli E., Flodgaard H., Goldstone T. P., Heidemarie I. Krieger-Brauer, Kostron H., Lowry O. H., Manfred Gratzl, Phillips J. H., Reed K. C., Saermark T., Sandeaux R., Sillen L. G.   +13 more
core   +1 more source

Colorimetric Method for Monensin

Journal of AOAC INTERNATIONAL, 1973
Abstract A colorimetric method has been developed for the analysis of monensin, an anticoccidial agent. The principle of the method is adaptable to feeds, premixes, fermentation broth, and crystalline samples. A solution of 3% vanillin in 0.5% sulfuric acid in methanol was used as the color reagent for monensin.
T, Golab, S J, Barton, R E, Scroggs
openaire   +2 more sources

Rubidium(I) monensinate dihydrate [PDF]

Acta Crystallographica Section E Structure Reports Online, 2007
In the title complex, [Rb(C(36)H(61)O(11))]·2H(2)O, the Rb(+) cation is coordinated by seven O atoms of monensin. Rb-O distances range from 2.7870 (17) to 3.1429 (17) Å. Both O atoms of the carboxyl-ate group are involved in the coordination of Rb. The structure displays inter- and intra-molecular O-H⋯O and C-H⋯O hydrogen-bonding inter-actions.
YILDIRIM, SEMA, Khardli, Fatim-Zahra, Mimouni, Mostafa, Ben Hadda, Taibi, McKee, Vickie   +4 more
openaire   +4 more sources

Intermediates in monensin biosynthesis: A late step in biosynthesis of the polyether ionophore monensin is crucial for the integrity of cation binding

Beilstein Journal of Organic Chemistry, 2014
Polyether antibiotics such as monensin are biosynthesised via a cascade of directed ring expansions operating on a putative polyepoxide precursor.
Wolfgang Hüttel, Jonathan B. Spencer, Peter F. Leadlay   +2 more
doaj   +1 more source

Low doses of monensin for lambs fed diets containing high level of ground flint corn

Scientia Agricola, 2020
Two experiments were proposed to evaluate the addition of monensin for lambs fed diets containing a high level of mature ground flint corn. The experimental diets were as follows: no inclusion of monensin (M0) and inclusion of 8 (M8), 16 (M16) and 24 mg ...
Daniel Montanher Polizel, André Storti Martins, Alexandre Arantes Miszura, Marcos Vinícius de Castro Ferraz Júnior, Analisa Vasques Bertoloni, Gabriela Bagio Oliveira, José Paulo Roman Barroso, Evandro Maia Ferreira, Alexandre Vaz Pires   +8 more
doaj   +1 more source

A new type of Na+-driven ATP synthase membrane rotor with a two-carboxylate ion-coupling motif [PDF]

, 2013
: The anaerobic bacterium Fusobacterium nucleatum uses glutamate decarboxylation to generate a transmembrane gradient of Na+. Here, we demonstrate that this ion-motive force is directly coupled to ATP synthesis, via an F1Fo-ATP synthase with a novel Na ...
Faraldo-Gómez, José D., Iglesias-Cans, Marina, Krah, Alexander, Leone, Vanessa, M. Cook, Gregory, Matthies, Doreen, Meier, Thomas, Schulz, Sarah, Yildiz, Özkan   +8 more
core   +3 more sources

Altered protozoan and bacterial communities and survival of Escherichia coli O157:H7 in monensin-treated wastewater from a dairy lagoon.

PLoS ONE, 2013
Surviving predation is a fitness trait of Escherichia coli O157:H7 (EcO157) that provides ample time for the pathogen to be transported from reservoirs (e.g. dairies and feedlots) to farm produce grown in proximity.
Subbarao V Ravva, Chester Z Sarreal, Robert E Mandrell   +2 more
doaj   +1 more source

Determination of Pharmaceuticals in Coastal Systems Using Solid Phase Extraction (SPE) Followed by Ultra Performance Liquid Chromatography – tandem Mass Spectrometry (UPLC-MS/MS) [PDF]

, 2015
This paper describes the optimization and validation of an analytical method for the determination of 83 pharmaceutically active compounds (PhACs) in aqueous samples using solid-phase extraction (SPE) followed by ultra performance liquid chromatography ...
Baena Nogueras, Rosa María, González Mazo, Eduardo, Lara Martín, Pablo Antonio, Pintado Herrera, Marina Guadalupe   +3 more
core   +1 more source

Effects of Feed Additives and Mixed Eimeria Species Infection on Intestinal Microbial Ecology of Broilers [PDF]

, 2006
Evaluation of digestive microbial ecology is necessary to understand effects of growth-promoting feed. In the current study, the dynamics of intestinal microbial communities (MC) were examined in broilers fed diets supplemented with a combination of ...
Clemente-Hernandez, S., Hume, M. E., Oviedo Rondon, E. O.   +2 more
core   +2 more sources

Selection for Resistance to Monensin, Nicarbazin, and the Monensin Plus Nicarbazin Combination

Poultry Science, 1990
Two series of experiments were conducted to assess the relative ability of strains of Eimeria acervulina and Eimeria tenella to develop resistance to monensin (MON), nicarbazin (NIC), and the monensin plus nicarbazin combination (MON plus NIC). The studies were designed so that drug concentrations in the selection experiments were increased whenever ...
K W, Bafundo, T K, Jeffers
openaire   +2 more sources