(n.) A compound containing two amido groups united with one or more basic or positive radicals, -- as contrasted with a diamide.
Example Sentences:
(1) The behaviour of DAO suggests that the enzyme plays an important role in the control of intracellular diamine concentration.
(2) The preservation of diamine oxidase activity during starvation implies a need for the enzyme not related to mucosal proliferation or digestion.
(3) Ornithine decarboxylase (ODC) and diamine oxidase (DAO), enzymes involved in polyamine metabolism, are highly expressed by small bowel enterocytes.
(4) Its penetration into the cells was blocked with the diamines putrescine and cadaverine.
(5) 195, 164 168] concluded that low concentrations of diamines reversed the direction of the proton pump.
(6) When administered in combination with the diamine oxidase inhibitor, aminoguanidine, an almost complete block of histamine metabolism was observed.
(7) In bis-(dichloroacethyl)-octamethylen-diamine (bis-diamine)-induced malformed hearts, localization of HNK-1 immunoreactivity was not remarkably altered in the early embryonic heart.
(8) Free polyamines as well as activity of diamine oxidase were distinctly increased in blood, while concentration of total diamino acids was simultaneously decreased in blood serum of the patients as compared with that of healthy persons.
(9) The substitution of an amino group for methyl one in a diamine increased its inhibitory effect.
(10) The authors suggest a method for simultaneous measurements of the blood serum monoamine oxidase and diamine oxidase activities that permits cut down the time of the blood and substrate incubation to 10 min, essentially shortens the procedure and simplifies it.
(11) Forty-one specimens of mucinous cystadenoma (MCA) of the ovary and 13 specimens of normal uterine endocervix were investigated histochemically using alcian blue pH 2.5-PAS, high iron diamine-alcian blue pH 2.5, galactose oxidase-Schiff reaction (GOS, for detection of gastric surface mucous cell mucins), paradoxical Concanavalin A staining (PCS, for detection of gastric gland cell mucins) and periodic acid-sodium borohydride-potassium hydroxide-PAS (PA-SB-PH-PAS) reaction (for detection of mucins of the large intestine).
(12) Sections were treated with nitrous acid and then stained with Alcian Blue pH 1.0, high iron diamine or Aldehyde Fuchsin for sulphated glycoconjugates.
(13) To enhance the efficiency and specificity of diamine methods in light microscopy, these methods were sensitized by silver enhancement in combination with trichloro(ethylene) platinate (KTP).
(14) Inhibition of MDA production to below control levels using the antioxidant N,N'-diphenyl-phenylene diamine (DPPD) however, had no inhibitory effect on cocaine-induced cytotoxicity in either mouse or rat cells.
(15) From all mammals investigated so far only in rabbits diamine oxidase could not be detected in any tissue except the gut.
(16) The objective of the present investigation was to examine the effect of (2R,5R)-6-heptyne-2,5-diamine (methyl-acetylenicputrescine; MAP), an irreversible inhibitor of ODC, on the induction of alloreactivity in vivo.
(17) During early pregnancy the rise of serum diamine oxidase (DAO) is confined within narrow limits to certain weeks of gestation.
(18) Derivatization of carboxyl groups on the carbon surface with a poly(oxyalkalene)diamine (Jeffamine ED-600), followed by biotinylation of the free amine, allowed the attachment of a fluorescein isothiocyanate (FITC) conjugate of ExtrAvidin.
(19) No changes in plasma diamine oxidase activity were observed in saline-treated animals during intestinal ischemia and following revascularization.
(20) Diamine oxidase was also assayed in spent culture media to assess its spontaneous release by CaCo-2 cells.
Indophenol
Definition:
(n.) Any one of a series of artificial blue dyestuffs, resembling indigo in appearance, and obtained by the action of phenol on certain nitrogenous derivatives of quinone. Simple indophenol proper has not yet been isolated.
Example Sentences:
(1) This change increased the affinity of the protein complex for 2,6-dichlorophenol-indophenol at its oxidation sites.
(2) The bean sprout enzyme catalyzed ferredoxin-dependent electron transfer from NADPH to equine cytochrome c at a high rate but, unlike the spinach enzyme, exhibited little NADPH to 2,6-dichlorophenol indophenol diaphorase activity.
(3) The mechanism of pyruvate-2,6-dichlorophenol-indophenol (2,6-CPI) reductase reaction catalyzed by the pyruvate dehydrogenase complex from pigeon breast muscle and by its pyruvate dehydrogenase component was studied.
(4) The effect of this agent was reversed by the 2,6-dichlorophenol-indophenol added at equivalent concentrations.
(5) The artificial electron donor compounds p-phenylenediamine (PD), N, N, N', N'-tetramethyl-p-phenylenediamine (TMPD), and 2,6-dichlorophenol-indophenol (DCPIP) restored the Hill reaction and photophosphorylation in chloroplasts that had been inhibited by washing with 0.8 m tris (hydroxymethyl) aminomethane (tris) buffer, pH 8.0.
(6) Oxidized viologen dyes, flavin nucleotides, dichlorophenol indophenol and ferricyanide can act with efficiency as acceptors in the reaction mediated by these diaphorases.
(7) Ferricyanide and 2,6-dichlorophenol-indophenol were effective as electron acceptors.
(8) Amobarbital is relatively ineffective and inhibits only the indophenol reductase activity of enzyme I.
(9) After treating Bacillus megaterium KM membranes with 0.2% sodium deoxycholate, most of the membrane reduced nicotinamide adenine dinucleotide (NADH) oxidase was inactivated, and all of the membrane NADH-2,6 dichlorophenol indophenol oxidoreductase was solubilized.
(10) Protoporphyrin formation occurred in the presence of nitrite, hydroxylamine, sulfite, thiosulfate, ATP plus sulfate, NAD+, NADP+, flavin adenine dinucleotide, flavin mononucleotide, fumarate, 2,6-dichlorophenol-indophenol, methyl viologen, and 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide.
(11) Studies with alternate electron acceptors indicated the presence of a menadione, a 2,6-dichlorophenol indophenol and a very weak ferricyanide oxido-reductase activity, but no cytochrome c oxido-reductase, in the cell-free preparations.
(12) As indicated by the purple color and confirmed by UV and mass spectroscopy, indophenols were formed as final products.
(13) Dichlorophenol-indophenol or potassium ferricyanide served as an electron acceptor.
(14) They also reduced methyl viologen in the presence of the artificial donor reduced 2,6-dichlorophenol indophenol with a low yield but an appreciable saturation rate.
(15) The rate of reduction of 2,6-dichlorophenol-indophenol by illuminated chloroplasts isolated from ecological races of Typha latifolia was negatively correlated with length of growing season at the site of origin.
(16) Turkey liver xanthine dehydrogenase engaged in catalysing the oxidation of xanthine by dichlorophenol-indophenol was progressively inactivated by methanol.
(17) Appearance of dichlorodimethoxy-p-benzoquinone, dimethyl quinone, tetramethyl-p-phenylenediamine, dichlorophenol indophenol and ferricyanide Hill reactions were observed after 8h of greening.
(18) The kinetics of electron-transfer involved in reactions of reduction of 2,6-dichlorophenol indophenol and Fe(CN)3-(6) by L-ascorbic acid and reduction of ferric cytochrome c by both L-ascorbic acid and reduced hydroxylamine oxidoreductase were studied as a function of three parameters: ionic strength, pressure (1-2000 bar) and temperature (4-20 degrees C) using the high-pressure stopped-flow method.
(19) The formation of reduced forms of FAD was not detected, but in the presence of both FAD and phospholipid the enzyme catalysed the reduction of quinone by l-malate at rates equivalent to those obtained with 2,6-dichlorophenol-indophenol as terminal acceptor.
(20) In presence of 8-HQ, water to methylviologen (MV) photoreduction in isolated chloroplasts is inhibited while the reduction of dichlorophenol indophenol is inhibited in both chloroplasts as well as in photosystem II particles.