(n.) A salt of selenic acid; -- formerly called also seleniate.
Example Sentences:
(1) 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.
(2) Pregnant hamsters were treated with selenite, selenate, and selenomethionine during the critical stages of embryogenesis.
(3) Since selenate was not reduced by GSH, this reaction proved that ATP sulphurylase had formed an active selenate.
(4) 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.
(5) The absence of undersulfated chains in preparations from cultures exposed to selenate supports the concept that, in the intact cell, the polymerization of heparan sulfate might be dependent on the sulfation of the saccharide units added to the growing glycosaminoglycan chain.
(6) Selenate reduction was rapid, with turnover rate constants ranging from 0.04 to 1.8 h-1 at total Se concentrations in pore water of 13 to 455 nM.
(7) Three groups of 5 pigs each were fed a high selenium (Se) diet by mixing either Astragalus praelongus (31.6 ppm Se in feed), A bisulcatus (31.7 ppm Se in feed), or sodium selenate (26.6 ppm Se in feed) with commercial hog feed.
(8) However, we showed ATP-, Mg2+- and ATP sulphurylase-dependent, and inorganic pyrophosphatase-stimulated, production of elemental selenium from selenate in the presence of GSH (reduced glutathione).
(9) In the presence of ATP and Mg2+, ATP sulphurylase from Saccharomyces cerevisiae catalysed the conversion of selenate into a compound with the electrophoretic and acid-lability properties of adenosine 5'-sulphatophosphate.
(10) Selenite (Se4+) was more toxic than selenate (Se6+) in the in vitro system, in which embryonic mesenchymal limb bud cells differentiated into chondrocytes, as well as in the blastocyst culture system.
(11) These results probably explain the ability of mammals, lacking a sulphate reductase system, to incorporate selenium from selenate into seleno-amino acids.
(12) Neither selenate nor selenomethionine produced changes in concentrations of intracellular glutathione.
(13) Sodium selenate alone and combined with vitamin E significantly increased the serum selenium levels, but the activity of serum glutathione peroxidase (GSH-Px) increased significantly only in the selenium- and vitamin E-treated patients with low initial GSH-Px activity.
(14) Neither selenate nor molybdate inhibited sulphate-dependent P(i)-ADP exchange and crude spinach extracts did not catalyse selenate-dependent P(i)-ADP exchange.
(15) It is concluded from these results that selenate is transported actively by the ileal mucosa and that a common transport mechanism for selenate and sulfate exists.
(16) Chromatographic parameters were optimized to determine selenate (SeO4(2-)) by single-column ion chromatography with the simultaneous detection of Cl-, NO2-, NO3- and SO4(2-).
(17) The other, a Pseudomonas species, was shown to respire selenate to selenite.
(18) Young striped bass (Morone saxatilis) with uninflated gas bladders were less sensitive to selenate and more sensitive to selenite exposure than normally developing striped bass in 96-hour acute toxicity tests.
(19) The D-glucose uptake was also stimulated by metavanadate, but not by selenite, selenate, or molybdate.
(20) Selenium transport across the ileum did not occur against a concentration gradient when selenite instead of selenate was present in the incubation medium.
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.