What's the difference between hyperoxide and metal?
Hyperoxide
Definition:
(n.) A compound having a relatively large percentage of oxygen; a peroxide.
Example Sentences:
(1) Inability of protective antioxidant mechanisms to react to the intensity of free-radical formation due probably both to surgical stress and cardiopulmonary bypass procedure performed in hypothermia leads to negative hyperoxidation effect on metabolism even in conditions of adequate perfusion.
(2) It has been shown that cardiopulmonary bypass in conditions of marked normobaric hyperoxidation (PaO2 more than 300 mm Hg) is accompanied by tissue metabolism intensification and disturbance.
(3) Exposing bovine erythrocyte membranes to the source of hyperoxide radicals resulted in a decrease of (Mg2+ + Na+ + K+)ATPase activity which could be partially prevented by addition of hyperoxide dismutase.
(4) Both hyperalkalinity and hyperoxidation result in an acid reaction.
(5) Based on experimental results, an unstable hyperoxidant state is postulated to trigger differentiation.
(6) Local hydrogen-hyperoxide treatment improved survival essentially.
(7) As no significant differences were found between iodine numbers and the carotenoid content of the samples tested, differences in the oxidation rate can be explained by hyperoxide decomposition brought about by products of phosphatidylcholine break-down.
(8) The adverse effect of hyperoxia on the respiration function when exercise was combined with added resistance to respiration seems to be associated with inhibition of the respiration center produced by the lack of hyperoxid stimulation.
(9) Cordialin, the agent extracted from the heart, is known to inhibit hyperoxidation of succinic acid, increasing NADH oxidation speed in suspension of cardiomyocytes in hypoxia.
(10) A closing section considers the enlightening new information that molecular biology has revealed about the regulation of AOE gene expression during normal development and under conditions of hyperoxidant challenge.
(11) Bovine erythrocytes exposed to the action of an enzymic source of hyperoxide radicals (hypoxanthine + xanthine oxidase) exhibited hemolysis, which was prevented by the presence of hyperoxide dismutase.
(12) The second phenomenon occurs following hyperoxidation, such as in narcotic addiction, and results in reduction.
(13) None of seven known microbody enzymes were detected at all, but glycerol-3-phosphate oxidase, ATPase, isocitrate dehydrogenase, acid phosphatase and part of the hyperoxide dismutase and malate dehydrogenase activities were found to be particle-bound after fractionation of homogenates by differential centrifugation.
(14) In other words PSK protects PFK from hyperoxidation by lipoperoxides.
(15) Altogether these data suggest that hyperoxidation may participate in the selective vulnerability of catecholaminergic neurons in Parkinson's disease.
(16) A relatively high dependence of the frequency of myocardial depression on the degree of hyperoxidation suggests that myocardial reperfusion by blood with high PaO2 upon anoxic arrest is advisable in hypothermic cardiopulmonary bypass with attenuated activity of the antioxidant systems protecting cells from oxygen free radicals.
(17) The reducing power loss and the excretion of glutathione disulfide are thought to be consequences of a hyperoxidant state; the adhesion of hyphae is thought to be a response to the hyperoxidant state.
(18) Although the cause of neuronal death in Parkinson's disease remains unknown, a hyperoxidation phenomenon has been implicated as a potential cytotoxic mechanism.
(19) However, this reoxidation of NADH was only partial in the mild and moderate groups, and a pronounced hyperoxidation occurred in the severe group.
Metal
Definition:
(n.) An elementary substance, as sodium, calcium, or copper, whose oxide or hydroxide has basic rather than acid properties, as contrasted with the nonmetals, or metalloids. No sharp line can be drawn between the metals and nonmetals, and certain elements partake of both acid and basic qualities, as chromium, manganese, bismuth, etc.
(n.) Ore from which a metal is derived; -- so called by miners.
(n.) A mine from which ores are taken.
(n.) The substance of which anything is made; material; hence, constitutional disposition; character; temper.
(n.) Courage; spirit; mettle. See Mettle.
(n.) The broken stone used in macadamizing roads and ballasting railroads.
(n.) The effective power or caliber of guns carried by a vessel of war.
(n.) Glass in a state of fusion.
(n.) The rails of a railroad.
(v. t.) To cover with metal; as, to metal a ship's bottom; to metal a road.
Example Sentences:
(1) In this study of ten consecutive patients sustaining molten metal injuries to the lower extremity who were treated with excision and grafting, treatment with compression Unna paste boot was compared with that with conventional dressing.
(2) The LD50 of the following metal-binding chelating drugs, EDTA, diethylenetriaminepentaacetic acid (DTPA), hydroxyethylenediaminetriacetic acid (HEDTA), cyclohexanediaminotetraacetic acid (CDTA) and triethylenetetraminehexaacetic acid (TTHA) was evaluated in terms of mortality in rats after intraperitoneal administration and was found to be in the order: CDTA greater than EDTA greater than DTPA greater than TTHA greater than HEDTA.
(3) Our recurrences are due to local infections, removing the metal strut too early, i.e.
(4) "Acoustic" craters were produced by two laser pulses delivered into a saline-filled metal fiber cap, which was placed in a mechanically drilled crater.
(5) These results indicate that the inhibition of CarAc by heavy metals occurs by binding of the sulfhydryl on the enzyme by the metals.
(6) The consequences of proved hypersensitivity in patients with metal-to-plastic prostheses, either present prior to insertion of the prosthesis or evoked by the implant material, are not known.
(7) 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.
(8) EGTA was ineffective in removing calmodulin from particulate preparations, but treatment with the tervalent metal ion La3+ resulted in a loss of up to 98% of calmodulin activity from these preparations.
(9) Sift the cocoa powder over the top and lightly but thoroughly fold it in with the metal spoon.
(10) The results also suggest that both alkali metals most probably have been delivered to the suckling pups and some of their toxic effect was retarded.
(11) The radioprotective action in E. coli ATCC 9637 of ascorbate added to media containing the weak sensitizer, tetracycline (effect described by Pittillo and Lucas (1967)), was found to be dependent on the presence of metal catalysts of the autoxidation of ascorbate.
(12) This study introduces a simple in vitro arrangement to measure current densities of implant metals.
(13) A rubber cuff was fixed on the metal cylinder and let an opening of 8 cm, simulating the cervix uteri.
(14) Since the enzyme requires a metal ion (Co2+) we suggest that the RNA and heparin are inhibitory by virtue of their capacity to chelate the Co2+.
(15) Lesions of allergic contact type could not be induced in the oral mucosa to any of the metal salt preparations.
(16) As yet the observations demonstrate that workers exposed in their occupation to heavy metals (cadmium, lead, metalic mercury) and organic solvents should be subjected to special control for detection of renal changes.
(17) This study investigates the photoneutron field found in medical accelerator rooms with primary barriers constructed of metal slabs plus concrete.
(18) While a clearcut relationship cannot be established between heavy metal music and destructive behavior, evidence shows that such music promotes and supports patterns of drug abuse, promiscuous sexual activity, and violence.
(19) The physiologically important metal ion for catalysis is Mg2+; however, Mn2+ supports in vitro activity, though at a reduced level.
(20) We support the view that catalysis by metalloenzymes may be a reflection of the chemistry of the metal ion itself as a Lewis acid, and that perhaps too much emphasis has been placed on supposed special characteristics (such as strains, "entasis") of the enzyme-metal ion association.