(a.) Of or pertaining to selenium; derived from, or containing, selenium; specifically, designating those compounds in which the element has a higher valence as contrasted with selenious compounds.
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.
Selenious
Definition:
(a.) Of, pertaining to, or containing, selenium; specifically, designating those compounds in which the element has a lower valence as contrasted with selenic compounds.
Example Sentences:
(1) Each rat was subjected to a 1-cm full-thickness aortotomy and then immediately injected by tail vein with c 5 muCi of one of the following radioisotopes: chromic chloride Cr 51 or sodium chromate Cr 51; ferrous chloride Fe 59 or ferric chloride Fe 59; manganous chloride Mn 54; selenious acid Se 75; strontium chloride Sr 85; or zinc chloride Zn 65.
(2) The purpose of this study was to determine the effect of parenteral selenium as selenious acid on the selenium status of seven long-term TPN patients.
(3) Seleniated tRNA species as well as seleniated polypeptides were formed by all organisms tested.
(4) Moreover, the E. coli fdhF gene was expressed in Salmonella typhimurium, Serratia marcescens and Proteus mirabilis, indicating a high degree of conservation of the seleniating system throughout the enterobacteria.
(5) Human umbilical vein endothelial cells were metabolically labeled with either [35S]methionine or [75Se]selenious acid, and HL-60 cells and Hep G2 cells were metabolically labeled with [75Se]selenious acid.
(6) "Super Blue" contains 4% selenious acid and 2.5% cupric sulfate in HCl.
(7) We describe a patient who died eight days after ingesting selenious acid in the form of gun blueing.
(8) Sensitive and selective methodology is described for the simultaneous determination of thiols, disulfides and bis(alkylthio)selenides in mixtures formed by reaction of selenious acid with thiols.
(9) Acute selenious acid poisoning and its relation to Legionnaire's disease is discussed.
(10) Our results demonstrate that selenium dioxide, in the presence of moist air, is completely recovered (apparently as selenious acid aerosols) and that the previous shortfalls must be due to other selenium species as yet unidentified.
(11) Selenium, as selenomethionine, selenocystine, or selenious acid, activated both capillary and aortal endothelial cells of bovine origin.
(12) A 2 yo male child ingested approximately 15 ml of a Gun Blue solution containing selenious acid, nitric acid and copper nitrate.
(13) Rats injected with aurothioglucose (ATG) for 5 days were subsequently injected with [75Se]selenious acid and killed after 3 days.
(14) Selenious acid aerosols in our study were formed by volatilizing selenium dioxide (approximately 3 mg) into a stream of moist ambient air (relative humidity, greater than 50%), and trapped on glass fiber filters using a high-volume air sampler.
(15) Reduction of selenious acid (H2SeO3) to elemental Se by ascorbic acid was investigated in regard to the stability of selenite in total parenteral nutrition (TPN) solutions.
(16) After ingestion of an unknown amount of a gun blueing compound containing selenious acid (11 ml from the bottle fluid were missing, equivalent to 2.9 g Se) a 2-year-old girl suffered from continuous hyper-salivation, vomiting, diarrhoea, restlessness and muscle spasm.
(17) [75Se]Selenious acid (6 nM) was added to primary cultures of rat hepatocytes and protein incorporation was assessed by SDS-PAGE and autoradiography.
(18) When the replacement of Se (selenious acid) began, there was a rapid increase (within 6 h) in plasma GSHPx activity.
(19) It was concluded that alpha-tocopherol acetate and selenium as selenious acid are stable in parenteral solutions and no significant loss occurs during delivery to patients.