(n.) A gaseous hydrocarbon, C2H6, forming a constituent of ordinary illuminating gas. It is the second member of the paraffin series, and its most important derivatives are common alcohol, aldehyde, ether, and acetic acid. Called also dimethyl.
Example Sentences:
(1) Five structurally representative nitrosamino-ethanals (R-N(NO)CH2CHO, R = 4-ClC6H4-, CH3-, nBu-, tBu-, HOCH2CH2-) have been synthesized.
(2) These parameters are compared with those of various model groups and compounds: CH2, peptide, methane, ethane, and the 1--13 N-terminal fragments of ribonuclease.
(3) A sensitive radioimmunoassay (RIA) for the specific determination of 1-(4-methanesulphonamidophenoxy)-2-[N-(4-methanesulphonamido -phenethyl)-N- methylamino]ethane (UK-68,798), a novel class III antidysrhythmic agent, in human plasma is described.
(4) To measure [Ca2+]i, fluorine NMR spectra were acquired in a separate group of hearts loaded with the Ca2+ indicator 5F-BAPTA [5,5'-difluoro derivative of 1,2-bis-(o-aminophenoxy)ethane- N,N,N',N'-tetraacetic acid].
(5) We determined ethane production rates in rats (group I) ventilated with hydrocarbon-free air (HFA) before and after exsanguination.
(6) Acid p-nitrophenyl phosphatase in rat calvaria extract behaved in the same way as the liver enzyme and was also strongly inhibited by dichloromethylene diphosphonate, but not by ethane-1-hydroxy-1, 1-diphosphonate.
(7) Experiments using purified fatty acids revealed that ethane was preferentially produced from docosahexaenoic and linolenic, and pentane from linoleic and arachidonic acids.
(8) Rabbits were pretreated with phenobarbital, 1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane (DDT), 3-methylcholanthrene, beta-naphthoflavone, Aroclor 1254, ethanol, trans-stilbene oxide, pregnenolone-16 alpha-carbonitrile, or clofibric acid.
(9) Surprisingly, when the increase in [Ca2+]i during stimulation of oscillations was prevented by loading the cells with 1,2-bis(2-aminophenoxy) ethane-N,N,N',N'-tetraacetic acid, a persistent activation of Ca2+ release and Ca2+ efflux occurred.
(10) The purpose of this study was to test the effectiveness of various doses of disodium ethane-1-hydroxy-1,1-diphosphonate (EHDP) in an experimental rabbit model of athero-arteriosclerosis designed by Hass et al.
(11) Pesticidal contaminants in both placenta and milk were 1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane (p,p'-DDT), its metabolites 1,1-dichloro-2,2-bis(p-chlorophenyl)ethylene (p,p'-DDE) and 1,1-dichloro-2,2-bis(p-chlorophenyl)ethane (p,p'-DDD), alpha, beta, gamma - isomers of benzene hexachloride (BHC) and aldrin.
(12) In adult myocytes, when EGTA (10 or 20 mM) or bis(o-aminophenoxy)ethane-N,N,N',N'-tetraacetic acid (BAPTA, 10 mM) were included in the pipette solution, contractions were rapidly abolished, while a small (4 mV) shift of f infinity to more positive potentials was seen.
(13) Ethane-1-hydroxy-1,1-diphosphonate (EHDP) was the most effective diphosphonate in reducing myocardial and vascular degeneration and calcification, whereas diphosphonates such as ethane-1-amino-1,1-diphosphonate (EADP) and hydroxymethylene diphosphonate (HMDP) had little or no effect compared to saline controls.
(14) In vivo lipid peroxidation was monitored by measuring exhaled ethane from the animals.
(15) 3.25pm GMT Ethan Dean-Richards emails re the only goal of the game: The free-kick that led to the goal was Tiote's fifth or sixth 'tactical' foul today.
(16) The composition of 99mTc-ethane-1-hydroxy-1, 1-diphosphonate complexes, prepared with the reducing agent NaBH4 and by electrolytic reduction, was analysed by reversed-phase ion-pair chromatography and soft-gel permeation chromatography.
(17) While allowing the animal to breathe a mixture of 0.1% CO in air, normal saline, which contained appropriate amounts of six inert gases such as SF6, ethane, cyclopropane, halothane, ether and acetone, was infused at a constant rate through a peripheral vein.
(18) To investigate the role of Ca2+ we have artificially increased the calcium buffering capacity of the rod by using a patch pipet to incorporate the calcium buffer 1,2-bis(o-aminophenoxy)ethane-N,N,N',N'-tetraacetic acid (BAPTA) into the rod cytoplasm.
(19) A single dose of ethane dimethane sulphonate (EDS) given to adult male rats has a specific destructive effects on Leydig cells, which are removed from the intertubular area by macrophages.
(20) Production of MDA was greater in mouse kidney than liver and correlated better with the exhalation of ethane.
Ethylidene
Definition:
() An unsymmetrical, divalent, hydrocarbon radical, C2H4 metameric with ethylene but written thus, CH3.CH to distinguish it from the symmetrical ethylene, CH2.CH2. Its compounds are derived from aldehyde. Formerly called also ethidene.
Example Sentences:
(1) These results indicate that an A-ring ethylidene-containing bilatriene is required for post-translational covalent attachment of bilin to apophytochrome and that apophytochrome may be the bilin C-S lyase which catalyzes bilin attachment.
(2) Two mutagens, 2-amino-1-methyl-5-propylideneimidazol-4-one (AMPI) and 2-amino-5-ethylidene-1-methylimidazol-4-one (AEMI) were isolated and characterized by UV absorption spectra, mass spectra, and 1H-NMR.
(3) The cytotoxic and cell kinetic effects of the epipodophyllotoxin 4,6-demethylepipodophyllotoxin-9-(4,6-O-ethylidene-beta-D-glucopyr anoside) (VP-16) in cultured mammalian cells are thought to relate to the induction of DNA damage, specifically DNA strand interruptions.
(4) Reference ranges for alpha-amylase in serum, spontaneously voided urine, and 24 h urine were determined, using 4,6-ethylidene-(G7)-1-4-nitrophenyl-(Gl)-alpha,D-maltoheptaoside as the substrate (EPS method), at 25, 30, and 37 degrees C. The measured values were evaluated with and without the use of a factor which converts the results of the alpha-amylase EPS method into values comparable to those obtained with the alpha-amylase PNP method (substrate: 4-nitrophenyl-alpha,D-maltoheptaoside); comparison with the established reference ranges of the PNP method was therefore possible.
(5) The effects of the calcium antagonist verapamil on the intracellular disposition of 4'-demethylepipodophyllotoxin-9-(4,6-O-ethylidene-beta-D-glucopyra noside) (etoposide) (VP-16) as well as on subsequent DNA damage and cytotoxicity were studied in L1210 cells in vitro.
(6) Synthesis of the regular branched polysaccharide [-6(Gal beta 1-4)GlcNAc beta 1-3Gal beta 1-4Glc beta 1-]n structurally corresponding to capsular polysaccharide of Streptococcus pneumoniae type 14 involves blockwise synthesis of a tritylated 1,2-O-(1-cyano)ethylidene tetrasaccharide derivative from lactosamine and lactose precursors followed by stereospecific polycondensation of the tetrasaccharide monomer.
(7) The labelling was inhibited by 4,6-O-ethylidene-D-glucose.
(8) 4,6-O-Ethylidene-D-glucose inhibited wild-type transport with a Ki of approximately 12 mM, but this was increased to greater than 120 mM in the Gln282----Leu mutant.
(9) Drug uptake studies reveal equivalent equilibrium intracellular concentrations of [3H]9-(4,6-O-ethylidene-beta-D-glucopyranosyl)-4'-demethyepipodophyll otoxin in the resistant and parental cells.
(10) The effects of KW-3635 (sodium (E)-11-[2-(5,6-dimethyl-1-benzimidazolyl)- ethylidene]-6,11-dihydrodibenz[b,e]oxepine-2-carboxylate monohydrate, CAS 127166-41-0) on smooth muscle preparations were examined.
(11) The GC method allowed the quantitation of 2-ethylidene-1,5-dimethyl-3,3-diphenylpyrrolidine, and major metabolite of methadone.
(12) Cells pre-incubated with 76 mM ethylidene glucose did not show an uphill transfer from 4 mM-[(14)C]glucose in the outside medium in contrast to cells pre-incubated in 76 mM glucose or in 76 mM 3-O-methyl glucose.5.
(13) Four malto-oligosaccharides (dp 2-5), each with a 4,6-O-ethylidene group on the glucosyl unit at the non-reducing terminus, were synthesised and used to prove that the maltose-binding protein (MBP) of E. coli is a closed-groove binder.
(14) Podophyllotoxin, 4'-demethylpodophyllotoxin and 4'-demethylepipodophyllotoxin excluding an ethylidene glucose group had more anti-HeLa, but much less anti-L1210 activity than etoposide.
(15) No crossreactivity was found with alpha 1-methadol, morphine, meperidine, dextropropoxyphene, 2-ethyl-5-methyl-3,3-diphenyl-l-pyrroline and 2-ethylidene-l, 5-dimethyl-3,3-diphenylpyrrolidene.
(16) The essential amino acid L-tryptophan (L-Trp) was found to be an effective inhibitor of the development of mutagenicity (Ames test) in liquid-reflux models known to produce identified IQ-type mutagens, such as 2-amino-3,8-dimethylimidazo[4,5-f]quinoxaline (MeIQx) and 2-amino-3,7,8-trimethylimidazo[4,5-f]quinoxaline (7,8-DiMeIQx), and in reflux models recently developed in our laboratory that have been found to produce novel IQ-"like" mutagens (aminoimidazol-4-ones), which we have identified as 2-amino-1-methyl-5-propylideneimidazol-4-one (TCP-1), and 2-amino-5-ethylidene-1-methylimidazol-4-one (TCP-2 or ACP).
(17) Condensation of 6-azauridine with ethyl levulinate, followed by saponification or phosphorylation, leads to 2',3'-O-[1-(2-carboxyethyl)ethylidene]-6-azauridine and its 5'-monophosphate.
(18) Removal of the chloroacetyl groups from 12 beta, its alpha analogue 12 alpha, and 15 beta gave the 4-O-(2-benzyloxycarbonylamino-2-deoxy-4,6-O-ethylidene-alpha-(17 alpha) and -beta-D-glucopyranosyl)-4'-O-demethyl-epipodophyllotoxins (17 beta and 20 beta), respectively.
(19) The biosynthetic origin of the carbon skeleton of 3-ethylidene-L-azetidine-2-carboxylic acid (polyoximic acid) is described.
(20) The asymmetrical nature of sugar affinity for the hexose transfer system in human red cells has been demonstrated using purified 4,6-O-ethylidene-alpha-D-glucopyranose (ethylidene glucose) to inhibit the exchange of glucose, 3-O-methyl glucose and galactose.