(1) The proposed assay should be useful for in vitro metabolic studies of 1,2-dihaloethanes and mustards and has potential application for similar studies of monohalogenated ethanes, ethanols, and ethenes.
(2) A total of nine chlorinated ethanes and ethenes were circulated over lithium hydroxide in a laboratory scale closed system simulator.
(3) The level of adducts from ethene, determined as N-(2-hydroxyethyl)valine, was also higher in mice from diet S than in animals fed diet C, when all treatment groups were considered.
(4) About equimolar concentrations of bleomycin and FeCl3 resulted in optimal ethene formation.
(5) Halogenated ethenes are oxidatively metabolized by cytochrome P-450 to intermediates which inactivate cytochrome P-450 by destroying heme and to epoxides which may react with cellular macromolecules or decompose to other products.
(6) Previous mixed-culture studies have demonstrated that complete dechlorination to ethene is possible, although the final dechlorination step from vinyl chloride to ethene is rate limiting, with significant levels of vinyl chloride typically persisting.
(7) The results demonstrate a raised level of hydroxyethylation of N-terminal valine of Hb of smokers that is quantitatively compatible with ethene in the smoke being the source.
(8) Lipid peroxidation and metabolism of intestinal bacteria, giving rise to ethene, precursor of ethylene oxide, are thus indicated to be sources of observed background hydroxyethylations.
(9) The bioconversions with the three most promising ethene-utilizers (M26, M90C, M93A) were scaled-up to yield essentially optically pure (enantiomeric excess = 93%) S-(+)-phenyl glycidyl ether.
(10) This figure is compatible with a metabolic conversion of 3% (1-10%) of the inhaled ethene to ethylene oxide.
(11) KMBA was converted to ethene by dithranol under aerobic conditions, whereas ethene formation was negligible in the absence of oxygen.
(12) Ethene formation depended on oxygen, NADPH, FeCl3 and the enzyme.
(13) The limitations of Fluosol DA led to fluorocarbons under investigation such as F dimethyl bicyclononanes, F methyladamantane, bis (F-butyl) ethene or F-octylbromide.
(14) Eighteen newly isolated ethene- and propene-utilizing bacteria were screened for the ability to produce phenyl glycidyl ether, a common precursor for the synthesis of beta blockers, from phenyl allyl ether.
(15) O2- - and .OH-scavengers such as rutin, catechin, dimethyl sulfoxide, mannitol, ethanol, sodium salicylate and propyl gallate as well as catalase and superoxide dismutase inhibited ethene formation.
(16) Because the singlet oxygen (1O2) sensitizer, rose bengale, showed enlarged production of ethene when irradiated in the presence of KMBA, experiments were performed in the dark in order to avoid 1O2 production by dithranol.
(17) Efforts to measure adducts originating from ethene in environmental tobacco smoke and urban air show, however, that the resolving power of the methods used for identifying unknown risk factors must be increased.
(18) The detection limit was one pmol ethene or ethane per five mL air sample; the within-run precision (CV) of analysis was 2.1 percent at an ethane concentration of 16 pmol per five mL sample.
(19) For unknown reasons, uninduced mice varied strongly in the extent to which they converted ethene to epoxide.
(20) A sixth chlorinated ethene, tetrachloroethylene, was not degraded by the methane-utilizing culture under these conditions.
Vinyl
Definition:
(n.) The hypothetical radical C2H3, regarded as the characteristic residue of ethylene and that related series of unsaturated hydrocarbons with which the allyl compounds are homologous.
Example Sentences:
(1) Replacement of vinyl groups with bulkier substituents (hydroxyethyl or acetyl groups) decreases holoenzyme stability and catalytic activity.
(2) Glove manufacturers were queried to ascertain the occurrence of Lowinox 44S36 and butylhydroxyanisole in different brands of latex and vinyl examination gloves.
(3) This was possible because the Ara test, for volatile compounds (such as vinyl bromide), did not require the use of special vaporization techniques, which are difficult to evaluate quantitatively for mutagenic activity.
(4) A gas chromatographic method is described for the quantification of levels of 1,1,1-trichloroethane in vinyl chloride polymer resins and in poly(vinyl chloride) (PVC) bottles used in the packaging of foods.
(5) Rats have been exposed in a closed system to the chlorinated ethylenes vinyl chloride and trichloroethylene and to carbon tetrachloride as a reference compound.
(6) Biochemical and pharmacological effects of gamma-vinyl GABA (Vigabatrin, GVG), and irreversible enzyme-activated inhibitor of 4-aminobutyrate: 2-oxoglutarate aminotransferase (EC 2.6.1.19; GABA-T), were measured in mice.
(7) Also, if you want to press vinyl, forget it – leading up to this day all of the pressing plants are booked.
(8) A sensitive potentiometric monitoring method was developed that permits the continuous measurement of the disolution profiles of methyl vinyl ether-maleic anhydride-acid copolymers and salt derivatives.
(9) Vinyl perdeuterated arachidonic acid (20:4 delta 5,8,11,14-d8) was prepared from eicosatetraynoic acid (ETYA) and was esterified with 1-palmitoyl-sn-glycero-3-phosphocholine to yield 1-palmitoyl-2-vinylperdeuterioarachidonoyl-sn-glycero-3-phosphocho line [(16:0)(20:4-d8)PC].
(10) The arts and social space in Deptford opened in 2015 after three years of fundraising and it now runs a programme of gigs, screenings, talks and performances, as well as being home to Tome Records, which has a distractingly good selection of vinyl, as well as tapes and zines.
(11) Measurements of GABA were performed at two different times of day (11.00 and 15.00 h), 3 h after intraperitoneal administration of gamma-vinyl-GABA (GVG), an irreversible inhibitor of GABA transaminase.
(12) Similarly, incubation of cells with methyl vinyl ketone or allyl alcohol, but not N-dimethylnitrosamine, altered cellular GSH status.
(13) Vinyl chloride disease is the best known among these.
(14) The number of 6-TG-resistant cells increased in the high-occupational-cancer-risk group of vinyl chloride- and mixed organic industrial dust (MOID)-exposed workers as well as in the primary lung cancer patients.
(15) Also screened without exogenous activation were seven potential metabolites of vinyl chloride in their pure forms as well as the related epichlorohydrin.
(16) Admixtures were prepared in 2-L ethylene-vinyl acetate bags using conventional techniques and stored at room temperature.
(17) The interaction of vinyl chloride (VC) with poly(vinyl)chloride) (PVC) has been studied by inverse gas chromatography (IGC).
(18) A total nutrient admixture composed of 5% amino acid injection, 20% dextrose injection, and 3% intravenous fat emulsion was prepared aseptically in four 2-L ethylene-vinyl acetate bags.
(19) Vinyl chloride has been associated recently with findings of angiosarcoma in animals and man.
(20) The present investigation was undertaken to gain insight into the factors governing diffusion of a series of monosubstituted benzoic acids across ethylene-vinyl acetate copolymers.