What's the difference between phthalein and reaction?
Phthalein
Definition:
(n.) One of a series of artificial organic dyes made as condensation products of the phenols with phthalic acid, and well represented by phenol phthalein. Their alkaline solutions are fluorescent.
Example Sentences:
(1) There is no compelling explanation for this observation, but two facts are known: fluorescein is a derivative of phthalein, a pH indicator, and ischemic tissues become acidotic, with the pH falling below 7.0.
(2) In our pursuit for liver functional diagnosis, development of bifunctional radiopharmaceutical containing iminodiacetic acid (IDA), as the technetium chelating site along with phthalein or fluorescein structure, the skeleton of BSP and Rose Bengal, long used for the assessment of liver function is considered.
(3) To investigate the molecular requirements and mechanisms for the hepatic uptake of phthaleins, the transport of tetrabromosulfonephthalein (TBS) was investigated in basolateral rat liver plasma membrane vesicles.
(4) The functionality of the various technetium labeled phthalein and fluorescein IDA derivatives was evaluated by competitive BSP binding studies and by comparative binding with the hepatocyte specific protein, ligandin.
(5) The hepatobiliary transport of three structurally related phthaleins was compared in the rat, and found to differ to a large extent in three experimental conditions: 1) after a 72-h fast; 2) after a 4-day phenobarbital treatment; and 3) during infusion of bile salts: sodium dehydrocholate or taurocholate.
(6) A measured absorption increase of the Ca2+-indicator phthalein purple (10 degrees C, 562 nm, pH 9.3) occurs apparently simultaneously with the formation of metarhodopsin ii in ROS.
(7) Bilirubin and phthalein dyes are taken up by the liver via a carrier-mediated mechanism operated at least in part by bilitranslocase (BTL).
(8) Gadolinium-phthalein complexone (Gd-PC) was developed as a hepatobiliary magnetic resonance (MR) contrast agent.
(9) Moreover, inhibitions by rifamycin-SV and bilirubin suggest that there exists a common uptake system for bilirubin, phthaleins and other anions.
(10) It is, therefore, concluded that the phthalein structure recognized for transport is the quinoid molecule, with the dissociated acidic function on the benzene ring.
(11) The minimum requirement for this electrogenic process has been investigated in rat liver plasma membrane vesicles by using Thymol blue, a pH-indicator phthalein occurring either as a neutral, phenolic molecule or as a quinoid, monovalent anion.
(12) 111In has been complexed to a series of metal-complexing phthaleins and sulfonphthaleins, and the hepatobiliary excretion of the compounds were compared in rats.
(13) Phthalein complexone is one of the iminodiacetic acid derivatives and a structural analogue of bromosulfophthalein.
(14) Four Hg-203-mercurated phthaleins were prepared, purified, and compared with [203Hg] mercuric nitrate, [3H] phenolphthalein [203Hg] hydroxymercurifluorescein and Tc-99m-pyrophosphate in a rat model of myocardial necrosis to determine their specificities for damaged myocardium.
(15) Both the hydroxymercuri- functional group and the phthalein moiety are required for selectivity.
Reaction
Definition:
(n.) Any action in resisting other action or force; counter tendency; movement in a contrary direction; reverse action.
(n.) The mutual or reciprocal action of chemical agents upon each other, or the action upon such chemical agents of some form of energy, as heat, light, or electricity, resulting in a chemical change in one or more of these agents, with the production of new compounds or the manifestation of distinctive characters. See Blowpipe reaction, Flame reaction, under Blowpipe, and Flame.
(n.) An action induced by vital resistance to some other action; depression or exhaustion of vital force consequent on overexertion or overstimulation; heightened activity and overaction succeeding depression or shock.
(n.) The force which a body subjected to the action of a force from another body exerts upon the latter body in the opposite direction.
(n.) Backward tendency or movement after revolution, reform, or great progress in any direction.
Example Sentences:
(1) A 2.5-month-old child with cyanotic heart disease who required long-term PGE1 infusions; developed widespread periosteal reactions during the course of therapy.
(2) We used the polymerase chain reaction (PCR) to amplify the breakpoint area of alpha-thalassemia-1 of Southeast Asia type and several parts of the alpha-globin gene cluster to make a differential diagnosis between alpha-thalassemia-1 and Hb Bart's hydrops fetalis.
(3) The assembly reaction is accompanied by characteristic changes in fluorescence emission and dichroic absorption.
(4) Cantact placing reaction times were measured in cats which were either restrained in a hammock or supported in a conventional way.
(5) The effects of sessions, individual characteristics, group behavior, sedative medications, and pharmacological anticipation, on simple visual and auditory reaction time were evaluated with a randomized block design.
(6) If the method was taken into routine use in a diagnostic laboratory, the persistence of reverse passive haemagglutination reactions would enable grouping results to be checked for quality control purposes.
(7) Because cystine in medium was converted rapidly to cysteine and cysteinyl-NAC in the presence of NAC and given that cysteine has a higher affinity for uptake by EC than cystine, we conclude that the enhanced uptake of radioactivity was in the form of cysteine and at least part of the stimulatory effect of NAC on EC glutathione was due to a formation of cysteine by a mixed disulfide reaction of NAC with cystine similar to that previously reported for Chinese hamster ovarian cells (R. D. Issels et al.
(8) Between 22 HLA-identical siblings and 16 two-haplotype different siblings, a significant difference in concordance of reactions for the B-cell groups was noted.
(9) The second amino acid residue influences not only the rate of reaction but also the extent of formation of the product of the Amadori rearrangement, the ketoamine.
(10) Meanwhile the efficiency of muscarinic antagonists in inhibition of tremor reaction induced by arecoline administration is associated with interaction between the drugs and the M2-subtype.
(11) IgE-mediated acute systemic reactions to penicillin continue to be an important clinical problem.
(12) No reaction product was observed in the lamellar areas.
(13) The content of the cavities was not stained by any of the immunocytochemical reactions applied.
(14) Furthermore, all of the sera from seven other patients with shock reactions following the topical application of chlorhexidine preparation also showed high RAST counts.
(15) Nucleotide, which is essential for catalysis, greatly enhances the binding of IpOHA by the reductoisomerase, with NADPH (normally present during the enzyme's rearrangement step, i.e., conversion of a beta-keto acid into an alpha-keto acid, in either the forward or reverse physiological reactions) being more effective than NADP.
(16) The specific limited trypsinolysis of bacteriophage T7 RNA polymerase (T7RP) was performed in the presence of various components of the polymerase reaction and some GTP-analogs--irreversible inhibitors of the enzyme.
(17) The stopped-flow technique was used to measure the rate constants for the reactions between the oxidized forms of peroxidase with luminol and the following substrates: p-iodophenol, p-bromophenol, p-clorophenol, o-iodophenol, m-iodophenol, luciferin, and 2-iodo-6-hydroxybenzothiazole.
(18) The data are compared with the results from 79 patients with a bipolar depression, 192 with a neurotic depression and 89 with a depressive reaction.
(19) In particular, inflammatory reaction was significantly more frequent and severe in ischemic groups than in controls, independent of the degree of coronary stenosis.
(20) This suggests that Mg2+ accelerated both reactions from a single class of site.