(a.) Pertaining to, derived from, or containing iron. Specifically (Chem.), denoting those compounds in which iron has a higher valence than in the ferrous compounds; as, ferric oxide; ferric acid.
Example Sentences:
(1) Thus, although ferric-enterochelin cannot penetrate the cell surface from outside, the complex that is formed within the envelope is transported normally into the cell.
(2) Ferric iron in aqueous solution was used as an iron-only control.
(3) The free radical scavengers mannitol, thiourea, benzoate, and 4-methylmercapto-2-oxobutyrate protected either native cells exposed to H2O2 or pretreated hepatocytes exposed to H2O2 and given ferric or ferrous iron.
(4) During this reaction, the complete reduction of ferric ions present in ferredoxin was observed with a fast rate under either aerobic or anaerobic conditions.
(5) The effects of naftidrofuryl have been studied on MDA production in phosphate buffer in the presence or absence of ferric ions.
(6) Iron presented as inorganic ferric or ferrous salts may also be absorbed, though the more soluble ferrous salts are adsorbed much more rapidly.
(7) By using the Lancefield method as the standard, there was 100% agreement with both the colorimetric and ferric chloride tests for hippurate hydrolysis, and 96% agreement with the CAMP test.
(8) 220 MHz proton Fourier transform (FT) NMR with quadrature phase detection (QPD) technique is applied to observe largely hyperfine-shifted signals of various hemoproteins and hemoenzymes in ferric high-spin state.
(9) An additional synthetic analog of RA, which lacks a carbonyl group at the diketopiperazine ring, exhibited the same uptake rates as ferric RA.
(10) The electronic structure of the low-spin ferric iron in cyanide complex appears to be modulated by halide binding to a protonated amino acid in the distal heme cavity.
(11) Ferric ammonium citrate, ferrous sulfate and ferrous gluconate were all found effective in preventing rat anemia when added to their drinking water.
(12) Ferric ion and ferrocyanide are bound to nodes as colloidal precipitates, and may migrate away from their sites of formation.
(13) Of several heavy metal ions, such as Fe3+, Fe2+, Co2+, Ni2+, Cu2+ and Zn2+, tested for supplementation of the alkaline growth deficiency, only iron, either added in the ferrous or ferric form, was able to restore cellular growth.
(14) Ferric reduction takes place at the plasma membrane of the root epidermis cells by a transmembrane redox system, which can be activated when iron is getting short.
(15) Ferric[59Fe] citrate was injected to rats bearing hepatoma induced by the administration of diethylnitrosamine.
(16) On the morning before a 10 d collection period, the milk-substitutes were supplemented with 59Fe as ferric chloride and 65Zn as zinc chloride.
(17) A gene (FRE1) was identified which encodes a protein required for both ferric iron reduction and efficient ferric iron assimilation, thus linking these two activities.
(18) These results, taken together, indicate a role for ferric citrate in the iron nutrition of this strain, which has been shown to be an efficient nitrogen-fixing strain on a variety of soybean cultivars.
(19) The reduced toxicity can be correlated with changes in the difference spectrum of ferric-Adriamycin vs Adriamycin (ADR), where a peak around 610 nm shifted to the 570 nm region.
(20) Electron paramagnetic resonance (EPR) at 15 K was used to probe the magnetic interaction between the visible copper CuA2+ and ferric cytochrome a in the carbon monoxide compound of beef heart cytochrome oxidase.
Hematin
Definition:
(n.) Hematoxylin.
(n.) A bluish black, amorphous substance containing iron and obtained from blood. It exists the red blood corpuscles united with globulin, and the form of hemoglobin or oxyhemoglobin gives to the blood its red color.
Example Sentences:
(1) The renal failure is thought to have resulted from the presence of circulating free hematin, formed as a result of rapid administration of such a relatively large amount.
(2) The dissociation constants KD, for ligands such as bilirubin, indocyanine green, and hematin were determined by measuring the decrease in the intrinsic fluorescence of the proteins attendant on the addition of ligand.
(3) Severe crisis were successfully treated with Hematin.
(4) In addition, further activation of the hematin-catalase response by NaN3 was depressed in the ischemic side of the hippocampus and striatum.
(5) The chemical nature, etiology and clinical features of hematin calculi are discussed.
(6) HTM incorporates Mueller-Hinton medium with additions of 15 micrograms of hematin per ml, 15 micrograms of NAD per ml, and 5 mg of yeast extract per ml as growth-promoting additives.
(7) We have also shown, through the use of these peroxidase assays and by enzyme absorption spectra, that the peroxidase activity attributed to catalase maintained at alkaline pH is a catalytic but not enzymatic activity associated with a hematin group attached to a denatured catalase monomer.
(8) We have demonstrated that the nitroxyl free radical form of the carcinogen N-hydroxy-2-acetylaminofluorene (OH-AAF) is an obligatory intermediate in the cumene hydroperoxide-hematin-induced oxidative activation of this carcinogen into 2-nitrosofluorene and N-acetoxy-2-acetylaminofluorene.
(9) However, its plasma disappearance curve was not appreciably affected by administration of hematin.
(10) A method was developed for making viable counts of Campylobacter fetus (Vibrio fetus) in tube cultures using a medium containing alkaline hematin and incubation in a carbon dioxide incubator.
(11) Heme oxygenase appeared to be the HO-1 form, an assignment based on its amino acid sequence matching the sequence of 2 peptides obtained from purified HO-1 and the immunochemical properties of the cobalt-, hematin-, and bromobenzene-induced rat liver enzyme.
(12) A statistically significant (p.001) improvement of the level of knowledge of drug prices with increasing experience was found: ampicillin, hematinics, and cough syrup prices were better known than the prices of infrequently prescribed drugs (valproic acid, MMR vaccine).
(13) Hematin binding was noncompetitive with transferase activity and did not involve the bilirubin-binding site, suggesting the existence of unique heme-binding sites on these proteins.
(14) After 2 days of hematin administration, about 5 days were required for delta-aminolevulinic acid, and 11 days for porphobilinogen to return to the concentrations that were detected before treatment.
(15) The major hydrocarbon gas products in iron, copper, or hematin catalyzed peroxidation systems were ethane or ethylene from linolenic acid, and pentane from linoleic acid and arachidonic acid.
(16) There were no statistically significant changes in electrolyte concentrations neither in preterm or prolonged pregnancy, nor in acute or chronic fetal asphyxia, in meconial and hematinic mexures samples as well as in oxytocin infusions with a medium of saline.
(17) Rickettsia quintana grew in a liquid medium consisting of a brain-heart infusion base supplemented with starch and hematin.
(18) The peroxyl radical systems employed are microsomal prostaglandin H synthase and arachidonic acid, the hematin-catalyzed decomposition of a lipid hydroperoxide, and the autoxidation of the sulfite anion.
(19) Fifty-five women with a convincing clinical history of menorrhagia associated with recognizable pelvic disease (40 women) or a confirmed coagulation disorder (15 women) were studied through one or more cycles with measurements of menstrual blood loss volume by a modified alkaline hematin method.
(20) It was shown that hematin was responsible for this P type 204 activity and that it was produced only by actively proteolytic strains when grown on a hemoglobin-containing medium.