(n.) An electro-negative element, or the element which, in electro-chemical decompositions, is evolved at the anode; -- opposed to cation.
Example Sentences:
(1) Both SAA and non-SAA enhanced ammonium excretion but only non-SAA enhanced organic anion excretion, an indicator of incomplete oxidation of organic acids.
(2) In the presence of high external Cl, a component of outward current that was inhibited by the anion channel blocker diphenylamine-2-carboxylate (DPC) appeared in 70% of the cells.
(3) Cell viability, ability to generate superoxide anion, and chemotaxis were found to be unaltered both before and after labeling.
(4) Interaction of viable macrophages with cationic particles at 37 degrees C resulted in their "internalization" within vesicles and coated pits and a closer apposition between many segments of plasmalemma than with neutral or anionic substances.
(5) In general, enzyme activity was strongly reduced by heavy metal inorganic cations; less strongly by organometallic cations, some anions, and certain pesticides; and weakly inhibited by light metal cations and organometallic and organic compounds.
(6) The order in which anions supported uptake was Cl- = SCN- greater than F- greater than NO3- = SO2(-4) for beta-alanine, whereas it was SCN- greater than F- = Cl- = NO3- greater than SO2(-4) for L-alpha-alanine.
(7) Moreover, it is the recombinant p70 polypeptides of slowest mobility that coelute with S6 kinase activity on anion-exchange chromatography.
(8) Superoxide anion (O2.-) was photogenerated upon illumination of riboflavin in fluorescent light.
(9) At hypothyroid patients there is an ADP excess which is degenerated to xanthine, the substrate of xanthine oxidase resulting in toxic anion superoxide and UA.
(10) The sigmoidal shape of the curve of rate constant vs mole percent anionic lipid is consistent with a positively cooperative effect of the negative surface charge.
(11) The changes included swelling, blunting, and flattening of epithelial foot processes, were accompanied by decreased stainability of glomerular anionic sites, and were largely reversed by subsequent perfusion with the polyanion heparin.
(12) The granules of human large granular lymphocytes have been reported to contain, in addition to perforin, a soluble HRF activity that can be eluted from anion-exchange columns at 115 mM NaCl.
(13) The channels studied here were more selective for monovalent cations than anions, but also showed some permeability to anions and larger electrolytes, suggesting a large functional pore diameter.
(14) The reduction of cytochrome c was found to be sensitive to both anaerobiosis and superoxide dismutase, suggesting the involvement of superoxide anions with this electron acceptor.
(15) The porins are a class of voltage-dependent, anion-selective, channel-forming proteins located in the outer mitochondrial membrane (OMM).
(16) In 254 findings of the acid-base balance ions and proteins, the authors evaluated mutual relations between the acid-base balance and calculation from the anion column.
(17) Proceeding from the observation that organic anions bound to albumin have hepatic extraction fractions that are unexpectedly high, we have studied a distributed model that accounts for this phenomenon by invoking sites on the cell surface that catalyze the dissociation of albumin-anion complexes.
(18) 6) The subunits alpha and beta of bovine follitropin were obtained by incubation in acidic urea, the chains being then separated by anion exchange chromatography.
(19) Here we report that phenol hydroxylation to hydroquinone is also catalyzed by human myeloperoxidase in the presence of a superoxide anion radical generating system, hypoxanthine and xanthine oxidase.
(20) The oxidation of the anion radical intermediate by O2 to the parent nitro compound is proposed to account for the well-known O2 inhibition of microsomal nitroreductase.
Selenite
Definition:
(n.) A salt of selenious acid.
(n.) A variety of gypsum, occuring in transparent crystals or crystalline masses.
Example Sentences:
(1) After a resuscitation period of 4 h, the medium was made selective by addition of either sodium thiosulfate, bile salts and iodine, or sodium selenite and L-cystine.
(3) This inhibition was partially reversed on addition of the translocated substrates sulphate or selenate to the external medium: selenite which is not translocated does not protect against DIDS inhibition.
(4) Pregnant hamsters were treated with selenite, selenate, and selenomethionine during the critical stages of embryogenesis.
(5) The less toxic seleno-di-N-acetylglycine was needed in larger molar doses and did not act as rapidly as selenite.
(6) DNA methylase isolated from selenite treated animals had only 43% of the activity as enzyme from control rats.
(7) The deposition of selenium (Se) in erythrocyte proteins was studied in rats fed Se as sodium selenite, selenocystine, selenomethionine (Se-Met), high Se wheat or selenium-enriched yeast.
(8) The effects of cadmium as cadmium acetate and selenium as sodium selenite on glucose output, cell viability, and glutathione levels in rat hepatocytes were evaluated.
(9) Thus, selenite gave higher radioactivity in myelin, then followed by the light synaptosomal and the vesicular fraction.
(10) The pre-incubation with sodium selenite reduces the respiratory index in guinea-pig cardiac mitochondria when alpha-ketoglutarate and glutamate are used as substrates.
(11) The severity of ischaemic lesion could be reduced by FRLP inhibition using antioxidative agents of sharply differing chemical nature (sodium selenite, alpha-tocopherol a.o.).
(12) An initial series of experiments, with hepatocytes in suspension, indicated that selenite-induced DNA fragmentation was oxygen dependent and could be inhibited by cyanide, HgCl2 and CuDIPS.
(13) Selenomethionine (10 ppm Se) resulted in an incidence of 13.1% malformations that were often multiple, whereas sodium selenite (10 and 25 ppm Se) resulted in 3.6 and 4.2% malformations.
(14) The increase or decrease of the sodium selenite dose by the factor ten had no effect on the preservation of the contractility of fragments of the heart-muscle after storage -196 degrees C in comparison to the control group.
(15) Percent hemolysis is marked decreased after a three-hour incubation of the whole blood with addition of selenomethionine as well as sodium selenite with tocopherole in combination before cryopreservation.
(16) The Food and Drug Administration gave approval in 1974 for the oral administration of supplemental selenium as either sodium selenite or sodium selenate to certain classes of swine and poultry.
(17) The cause of death by selenite was apparently due to the respiratory failure.
(18) Nevertheless, DNA and RNA polymerases, the enzymes responsible for this synthesis, are insensitive to inhibition by selenite.
(19) Sodium selenite is able to reduce it towards the normal level.
(20) is able to grow well up to 3% sodium selenite-containing media.