Aminopyrine: A pyrazolone with analgesic, anti-inflammatory, and antipyretic properties but has risk of AGRANULOCYTOSIS. A breath test with 13C-labeled aminopyrine has been used as a non-invasive measure of CYTOCHROME P-450 metabolic activity in LIVER FUNCTION TESTS.Aminopyrine N-DemethylaseAniline Hydroxylase: A drug-metabolizing, cytochrome P-450 enzyme which catalyzes the hydroxylation of aniline to hydroxyaniline in the presence of reduced flavoprotein and molecular oxygen. EC 1.14.14.-.Parietal Cells, Gastric: Rounded or pyramidal cells of the GASTRIC GLANDS. They secrete HYDROCHLORIC ACID and produce gastric intrinsic factor, a glycoprotein that binds VITAMIN B12.Microsomes, Liver: Closed vesicles of fragmented endoplasmic reticulum created when liver cells or tissue are disrupted by homogenization. They may be smooth or rough.Gastric Acid: Hydrochloric acid present in GASTRIC JUICE.Antipyrine: An analgesic and antipyretic that has been given by mouth and as ear drops. Antipyrine is often used in testing the effects of other drugs or diseases on drug-metabolizing enzymes in the liver. (From Martindale, The Extra Pharmacopoeia, 30th ed, p29)Dipyrone: A drug that has analgesic, anti-inflammatory, and antipyretic properties. It is the sodium sulfonate of AMINOPYRINE.Proadifen: An inhibitor of drug metabolism and CYTOCHROME P-450 ENZYME SYSTEM activity.Cytochrome P-450 Enzyme System: A superfamily of hundreds of closely related HEMEPROTEINS found throughout the phylogenetic spectrum, from animals, plants, fungi, to bacteria. They include numerous complex monooxygenases (MIXED FUNCTION OXYGENASES). In animals, these P-450 enzymes serve two major functions: (1) biosynthesis of steroids, fatty acids, and bile acids; (2) metabolism of endogenous and a wide variety of exogenous substrates, such as toxins and drugs (BIOTRANSFORMATION). They are classified, according to their sequence similarities rather than functions, into CYP gene families (>40% homology) and subfamilies (>59% homology). For example, enzymes from the CYP1, CYP2, and CYP3 gene families are responsible for most drug metabolism.Hexobarbital: A barbiturate that is effective as a hypnotic and sedative.Peroxides: A group of compounds that contain a bivalent O-O group, i.e., the oxygen atoms are univalent. They can either be inorganic or organic in nature. Such compounds release atomic (nascent) oxygen readily. Thus they are strong oxidizing agents and fire hazards when in contact with combustible materials, especially under high-temperature conditions. The chief industrial uses of peroxides are as oxidizing agents, bleaching agents, and initiators of polymerization. (From Hawley's Condensed Chemical Dictionary, 11th ed)Pyrazolones: Compounds with a five-membered heterocyclic ring with two nitrogens and a keto OXYGEN. Some are inhibitors of TNF-ALPHA production.Secobarbital: A barbiturate that is used as a sedative. Secobarbital is reported to have no anti-anxiety activity.Glutethimide: A hypnotic and sedative. Its use has been largely superseded by other drugs.Seminal Vesicles: A saclike, glandular diverticulum on each ductus deferens in male vertebrates. It is united with the excretory duct and serves for temporary storage of semen. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Phenobarbital: A barbituric acid derivative that acts as a nonselective central nervous system depressant. It potentiates GAMMA-AMINOBUTYRIC ACID action on GABA-A RECEPTORS, and modulates chloride currents through receptor channels. It also inhibits glutamate induced depolarizations.Dealkylation: The removing of alkyl groups from a compound. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed)Nitroanisole O-Demethylase: Oxidative enzyme which transforms p-nitroanisole into p-nitrophenol.Gastric Mucosa: Lining of the STOMACH, consisting of an inner EPITHELIUM, a middle LAMINA PROPRIA, and an outer MUSCULARIS MUCOSAE. The surface cells produce MUCUS that protects the stomach from attack by digestive acid and enzymes. When the epithelium invaginates into the LAMINA PROPRIA at various region of the stomach (CARDIA; GASTRIC FUNDUS; and PYLORUS), different tubular gastric glands are formed. These glands consist of cells that secrete mucus, enzymes, HYDROCHLORIC ACID, or hormones.NADPH-Ferrihemoprotein Reductase: A flavoprotein that catalyzes the reduction of heme-thiolate-dependent monooxygenases and is part of the microsomal hydroxylating system. EC 1.6.2.4.Breath Tests: Any tests done on exhaled air.Histamine: An amine derived by enzymatic decarboxylation of HISTIDINE. It is a powerful stimulant of gastric secretion, a constrictor of bronchial smooth muscle, a vasodilator, and also a centrally acting neurotransmitter.Aniline CompoundsMicrosomes: Artifactual vesicles formed from the endoplasmic reticulum when cells are disrupted. They are isolated by differential centrifugation and are composed of three structural features: rough vesicles, smooth vesicles, and ribosomes. Numerous enzyme activities are associated with the microsomal fraction. (Glick, Glossary of Biochemistry and Molecular Biology, 1990; from Rieger et al., Glossary of Genetics: Classical and Molecular, 5th ed)Mixed Function Oxygenases: Widely distributed enzymes that carry out oxidation-reduction reactions in which one atom of the oxygen molecule is incorporated into the organic substrate; the other oxygen atom is reduced and combined with hydrogen ions to form water. They are also known as monooxygenases or hydroxylases. These reactions require two substrates as reductants for each of the two oxygen atoms. There are different classes of monooxygenases depending on the type of hydrogen-providing cosubstrate (COENZYMES) required in the mixed-function oxidation.SemicarbazidesRats, Inbred Strains: Genetically identical individuals developed from brother and sister matings which have been carried out for twenty or more generations or by parent x offspring matings carried out with certain restrictions. This also includes animals with a long history of closed colony breeding.Benzphetamine: A sympathomimetic agent with properties similar to DEXTROAMPHETAMINE. It is used in the treatment of obesity. (From Martindale, The Extra Pharmacopoeia, 30th ed, p1222)Cytochrome ReductasesLiver: A large lobed glandular organ in the abdomen of vertebrates that is responsible for detoxification, metabolism, synthesis and storage of various substances.H(+)-K(+)-Exchanging ATPaseAnemia, Pernicious: A megaloblastic anemia occurring in children but more commonly in later life, characterized by histamine-fast achlorhydria, in which the laboratory and clinical manifestations are based on malabsorption of vitamin B 12 due to a failure of the gastric mucosa to secrete adequate and potent intrinsic factor. (Dorland, 27th ed)Lipid Peroxides: Peroxides produced in the presence of a free radical by the oxidation of unsaturated fatty acids in the cell in the presence of molecular oxygen. The formation of lipid peroxides results in the destruction of the original lipid leading to the loss of integrity of the membranes. They therefore cause a variety of toxic effects in vivo and their formation is considered a pathological process in biological systems. Their formation can be inhibited by antioxidants, such as vitamin E, structural separation or low oxygen tension.Carbon Isotopes: Stable carbon atoms that have the same atomic number as the element carbon, but differ in atomic weight. C-13 is a stable carbon isotope.Dose-Response Relationship, Drug: The relationship between the dose of an administered drug and the response of the organism to the drug.Helicobacter Infections: Infections with organisms of the genus HELICOBACTER, particularly, in humans, HELICOBACTER PYLORI. The clinical manifestations are focused in the stomach, usually the gastric mucosa and antrum, and the upper duodenum. This infection plays a major role in the pathogenesis of type B gastritis and peptic ulcer disease.Agranulocytosis: A decrease in the number of GRANULOCYTES; (BASOPHILS; EOSINOPHILS; and NEUTROPHILS).Internal Medicine: A medical specialty concerned with the diagnosis and treatment of diseases of the internal organ systems of adults.Periodicals as Topic: A publication issued at stated, more or less regular, intervals.Physicians: Individuals licensed to practice medicine.Publishing: "The business or profession of the commercial production and issuance of literature" (Webster's 3d). It includes the publisher, publication processes, editing and editors. Production may be by conventional printing methods or by electronic publishing.Dysmenorrhea: Painful menstruation.Colorimetry: Any technique by which an unknown color is evaluated in terms of standard colors. The technique may be visual, photoelectric, or indirect by means of spectrophotometry. It is used in chemistry and physics. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Trigeminal Neuralgia: A syndrome characterized by recurrent episodes of excruciating pain lasting several seconds or longer in the sensory distribution of the TRIGEMINAL NERVE. Pain may be initiated by stimulation of trigger points on the face, lips, or gums or by movement of facial muscles or chewing. Associated conditions include MULTIPLE SCLEROSIS, vascular anomalies, ANEURYSMS, and neoplasms. (Adams et al., Principles of Neurology, 6th ed, p187)China: A country spanning from central Asia to the Pacific Ocean.Smell: The ability to detect scents or odors, such as the function of OLFACTORY RECEPTOR NEURONS.Imidazoline Receptors: Receptors of CLONIDINE and other IMIDAZOLINES. Activity of the ligands was earlier attributed to ADRENERGIC ALPHA-2 RECEPTORS. Endogenous ligands include AGMATINE, imidazoleacetic acid ribotide, and harman.Gastric Fundus: The superior portion of the body of the stomach above the level of the cardiac notch.Imidazolines: Compounds based on reduced IMIDAZOLES containing a single double bond.Idazoxan: A benzodioxane-linked imidazole that has alpha-2 adrenoceptor antagonist activity.Receptors, Drug: Proteins that bind specific drugs with high affinity and trigger intracellular changes influencing the behavior of cells. Drug receptors are generally thought to be receptors for some endogenous substance not otherwise specified.Muscle, Smooth: Unstriated and unstriped muscle, one of the muscles of the internal organs, blood vessels, hair follicles, etc. Contractile elements are elongated, usually spindle-shaped cells with centrally located nuclei. Smooth muscle fibers are bound together into sheets or bundles by reticular fibers and frequently elastic nets are also abundant. (From Stedman, 25th ed)Muscle Contraction: A process leading to shortening and/or development of tension in muscle tissue. Muscle contraction occurs by a sliding filament mechanism whereby actin filaments slide inward among the myosin filaments.
Effect of cyclosporine A on cytochrome P-450-mediated drug metabolism in the partially hepatectomized rat. (1/181)
Despite its hepatotoxic potential, cyclosporine A (CsA) has been reported to positively influence compensatory liver growth. To probe the physiological consequences of CsA on the recovery of liver function, studies were initiated in the 2/3 partially hepatectomized (PHx) rat, taking the recovery of cytochromes P-450-dependent drug metabolism as primary outcome. CsA was administered at a dose of 3. 33 mg/kg/day for 10 days. Drug metabolism was evaluated by the recovery of 14CO2 after administration of isotopically labeled model drugs and by studying the expression of the P-450 transcripts involved in their biotransformation before and 24 to 96 h after PHx. Before PHx, neither the steady-state mRNA nor the in vivo disposition of caffeine (CYP1A2), erythromycin (CYP3A2 and 3A1), or aminopyrine (CYP2B1 and 2C11) were influenced by CsA. Studies 24 h after PHx revealed a 29 to 39% reduction in the elimination of [14C]aminopyrine and [14C]erythromycin, which was unaffected by CsA. Their metabolism at 48 to 96 h after PHx also remained unaffected by CsA. By contrast, postPHx, [14C]caffeine elimination decreased to a level closely proportional to the loss in liver mass. In addition, CsA accelerated the recovery and/or prevented the decrease of caffeine elimination 24 h after PHx but not at later time points, indicating an early, but unsustained, beneficial effect of CsA on the recovery of CYP1A2-mediated activities. These data show that at the critical time of greatest loss in liver mass, CsA has only a selective influence on the biotransformation of cytochrome P-450 protein-dependent activities and that its effect on the regeneration process does not translate into an overall accelerated recovery of the hepatic drug-metabolizing function. (+info)L-365,260 inhibits in vitro acid secretion by interacting with a PKA pathway. (2/181)
The aim of this study was to analyse the antisecretory mechanism of L-365,260 in vitro in isolated rabbit gastric glands. We showed that compound L-365,260, described as a non-peptide specific competitive CCK-B receptor antagonist, was able to dose-dependently inhibit [14C]-aminopyrine accumulation induced by histamine (10(-4) M), carbachol (5x10(-5) M), 3-isobutyl-1-methyl-xanthine (IBMX) (5x10(-6) M) and forskolin (5x10(-7) M) with similar IC50 values respectively of 1.1+/-0.6x10(-7) M, 1.9+/-1.2x10(-7) M, 4.2+/-2.0x10(-7) M and 4.0+/-2.8x10(-7) M. We showed that L-365,260 acted beyond receptor activation and production of intracellular second messengers and that it had no action on the H+/K+ -ATPase. We found that L-365,260 inhibited cyclic AMP-induced [14C]-aminopyrine accumulation in digitonin-permeabilized rabbit gastric glands, suggesting that this compound acted, at least in part, as an inhibitor of the cyclic AMP-dependent protein kinase (PKA) pathway. (+info)Demethylation capacity of human fetal adrenal mitochondrial cytochrome P-450 in vitro. (3/181)
AIM: To explore the capacity and characteristics of adrenal mitochondria to metabolize xenobiotics in vitro in human fetus. METHODS: Subcellular fractions of fetal adrenal were prepared by differential centrifugation. Mitochondrial P-450 system was proved by spectral analyses and SDS-PAGE. The formaldehyde formation contents were measured with Nash reagent. RESULTS: The erythromycin N-demethylation linearly increased in the protein concentration (1-4 mg)- and incubation time (10-30 min)-dependent manners. A typical concentration-effect relationship appeared with erythromycin 0.067-1 mmol.L-1 and a positive correlation (r = 0.641, P < 0.05) existed between erythromycin N-demethylation and gestation months. The N-demethylation values (nmol.s-1/g protein) of erythromycin (2.7 +/- 0.8), benzfetamine (1.1 +/- 0.5), and aminophenazone (0.9 +/- 0.4) in mitochondria were 89% (P > 0.05), 162% (P < 0.01), and 62% (P < 0.01), respectively, of those in microsomes. There was correlation between mitochondria and microsomes in the N-demethylation of erythromycin (r = 0.708, P < 0.05) and benzfetamine (r = 0.707, P < 0.05). Troleandomycin stimulated erythromycin N-demethylation in adrenal mitochondria as well as in adrenal and liver microsomes in vitro. CONCLUSION: Fetal adrenal mitochondria, with multiple P-450 isoforms and greater capacity of demethylation, play a role in drug-metabolism during fetal development. (+info)Expression of rab11a N124I in gastric parietal cells inhibits stimulatory recruitment of the H+-K+-ATPase. (4/181)
Stimulation of the gastric parietal cell results in a massive redistribution of H+-K+-ATPase from cytoplasmic tubulovesicles to the apical plasma membrane. Previous studies have implicated the small GTPase rab11 in this process. Using matrix-assisted laser desorption mass spectrometry, we confirmed that rab11 is associated with H+-K+-ATPase-enriched gastric microsomes. A stoichiometry of one rab11 per six copies of H+-K+-ATPase was estimated. Furthermore, rab11 exists in at least three forms on rabbit gastric microsomes: the two most prominent resemble rab11a, whereas the third resembles rab11b. Using an adenoviral expression system, we expressed the dominant negative mutant rab11a N124I in primary cultures of rabbit parietal cells under the control of the tetracycline transactivator protein (tTA). The mutant was well expressed with a distribution similar to that of the H+-K+-ATPase. Stimulation of these cultures with histamine and IBMX was assessed by measuring the aminopyrine (AP) uptake relative to resting cells (AP index). In experiments on six culture preparations, stimulated uninfected cells gave an AP index of 10.0 +/- 2.9, whereas parallel cultures expressing rab11a N124I were poorly responsive to stimulation, with a mean AP index of 3.2 +/- 0. 9. Control cultures expressing tTA alone or tTA plus actin responded equally well to stimulation, giving AP index values of 9.0 +/- 3.1 and 9.6 +/- 0.9, respectively. Thus inhibition by rab11a N124I is not simply due to adenoviral infection. The AP uptake data were confirmed by immunocytochemistry. In uninfected cells, H+-K+-ATPase demonstrated a broad cytoplasmic distribution, but it was cleared from the cytoplasm and associated with apically derived membranes on stimulation. In cells expressing rab11a N124I, H+-K+-ATPase maintained its resting localization on stimulation. Furthermore, this effect could be alleviated by culturing infected cells in the presence of tetracycline, which prevents expression of the mutant rab11. We therefore conclude that rab11a is the prominent GTPase associated with gastric microsomes and that it plays a role in parietal cell activation. (+info)Responsiveness of beta-escin-permeabilized rabbit gastric gland model: effects of functional peptide fragments. (5/181)
We established a beta-escin-permeabilized gland model with the use of rabbit isolated gastric glands. The glands retained an ability to secrete acid, monitored by [14C]aminopyrine accumulation, in response to cAMP, forskolin, and histamine. These responses were all inhibited by cAMP-dependent protein kinase inhibitory peptide. Myosin light-chain kinase inhibitory peptide also suppressed aminopyrine accumulation, whereas the inhibitory peptide of protein kinase C or that of calmodulin kinase II was without effect. Guanosine-5'-O-(3-thiotriphosphate) (GTPgammaS) abolished cAMP-stimulated acid secretion concomitantly, interfering with the redistribution of H+-K+-ATPase from tubulovesicles to the apical membrane. To identify the targets of GTPgammaS, effects of peptide fragments of certain GTP-binding proteins were examined. Although none of the peptides related to Rab proteins showed any effect, the inhibitory peptide of Arf protein inhibited cAMP-stimulated secretion. These results demonstrate that our new model, the beta-escin-permeabilized gland, allows the introduction of relatively large molecules, e.g., peptides, into the cell, and will be quite useful for analyzing signal transduction of parietal cell function. (+info)Regulation and function of p38 protein kinase in isolated canine gastric parietal cells. (6/181)
We examined the regulation and functional role of p38 kinase in gastric acid secretion. p38 kinase was immunoprecipitated from cell lysates of highly purified gastric parietal cells in primary culture, and its activity was quantitated by in vitro kinase assay. Carbachol effects were dose- and time-dependent, with a maximal 10-fold stimulatory effect detected after 30 min of incubation. SB-203580, a highly selective inhibitor of p38 kinase, blocked carbachol induction of p38 kinase activity, with maximal inhibition at 10 microM. Stimulation by carbachol was unaffected by preincubation of parietal cells with the intracellular Ca(2+) chelator BAPTA-AM, but incubation of cells in Ca(2+)-free medium led to a 50% inhibition of carbachol induction of p38 kinase activity. Because some of the effects of carbachol are mediated by the small GTP-binding protein Rho, we examined the role of Rho in carbachol induction of p38 kinase activity. We tested the effect of exoenzyme C3 from Clostridium botulinum (C3), a toxin known to ADP-ribosylate and specifically inactivate Rho. C3 led to complete ADP-ribosylation of Rho, and it inhibited carbachol induction of p38 kinase by 50%. We then tested the effect of SB-203580 and C3 on carbachol-stimulated uptake of [(14)C]aminopyrine (AP). Inhibition of p38 kinase by SB-203580 led to a dose-dependent increase in AP uptake induced by carbachol, with maximal (threefold) effect at 10 microM SB-203580. Similarly, preincubation of parietal cells with C3 led to a twofold increase in AP uptake induced by carbachol. Thus carbachol induces a cascade of events in parietal cells that results in activation of p38 kinase through signaling pathways that are at least in part dependent on Rho activation and on the presence of extracellular Ca(2+). p38 kinase appears to inhibit gastric acid secretion. (+info)Tryptophan operon read-through. Isolation and characterization of an abnormally long tryptophan synthetase alpha subunit from a frame-shift mutant of Escherichia coli. (7/181)
A new mutant strain of Escherichia coli, strain ICR-47, contains a frame-shift mutation in the trpA gene, the gene most distal to the operator in the trp operon. Mapping experiments indicate that the lesion is located at a site within 10 to 15% of the end of this gene. The mutation results in "out-of-phase" translation of the distal portion of the trp mRNA; normal translational termination signal(s) are not encountered and a trpA gene product longer than the wild type protein is produced. As with the other enzymes produced from this operon, the in vivo level of the altered protein (the alpha subunit of the tryptophan synthetase enzyme complex) is controlled by exogenous L-tryptophan. The altered alpha subunit from the strain ICR-47 has been isolated and characterized. Molecular weight estimations indicate a molecular weight of approximately 37,000, an increase beyond the wild type enzyme corresponding to an additional 50 to 70 amino acid residues. The protein has a new COOH-terminal amino acid sequence. Results of preliminary hybridization experiments suggest that the ICR-47 mRNA, which is necessarily longer than that needed to code for wild type enzyme, is not detectably different in size from wild type mRNA. The enzymatic properties of the ICR-47 alpha subunit indicates a greatly reduced ability of the mutant subunit to combine functionally with wild type beta2 subunit, the second protein component in the tryptophan synthetase enzyme complex. In contrast, only 40 to 50% of the intrinsic enzymatic activity of the alpha subunit is lost. (+info)A proposed mechanism for the potentiation of cAMP-mediated acid secretion by carbachol. (8/181)
Acid secretion in isolated rabbit gastric glands was monitored by the accumulation of [(14)C]aminopyrine. Stimulation of the glands with carbachol synergistically augmented the response to dibutyryl cAMP. The augmentation persisted even after carbachol was washed out and was resistant to chelated extracellular Ca(2+) and to inhibitors of either protein kinase C or calmodulin kinase II. Cytochalasin D at 10 microM preferentially blocked the secretory effect of carbachol and its synergism with cAMP, whereas it had no effect on histamine- or cAMP-stimulated acid secretion within 15 min. Cytochalasin D inhibited the carbachol-stimulated intracellular Ca(2+) concentration ([Ca(2+)](i)) increase due to release from the Ca(2+) store. Treatment of the glands with cytochalasin D redistributed type 3 inositol 1,4,5-trisphosphate receptor (the major subtype in the parietal cell) from the fraction containing membranes of large size to the microsomal fraction, suggesting a dissociation of the store from the plasma membrane. These findings suggest that intracellular Ca(2+) release by cholinergic stimulation is critical for determining synergism with cAMP in parietal cell activation and that functional coupling between the Ca(2+) store and the receptor is maintained by actin microfilaments. (+info)Aminopyrine Hart, F. D.; Boardman, P. L. (1964). "Trial of Nifenazone ("thylin")". British Medical Journal. 1 (5397): 1553-1554 ...
In 1897 he invented "Pyramidon", the trade name for aminopyrine. With Arthur Stoll, he is credited with the isolation of ...
... is a metabolite of aminopyrine with analgesic, anti-inflammatory, and antipyretic properties. Due to the risk of ...
In 1893, a derivative of antipyrine, aminopyrine, was made by Friedrich Stolz at Hoechst. Yet later, chemists at Hoechst made a ...
A breath test with 13C-labeled aminopyrine has been used as a non-invasive measure of cytochrome P-450 metabolic activity in ... Aminophenazone (or aminopyrine, amidopyrine, Piramidon) is a pyrazolone with analgesic, anti-inflammatory, and antipyretic ... Caubet, M. S.; Laplante, A.; Caillé, J.; Brazier, J. L. (4 Jan 2007). "[13C]Aminopyrine and [13C]Caffeine Breath Test: ...
The compounds generally act as analgesics and include dipyrone (Metamizole), aminopyrine, ampyrone, famprofazone, morazone, ...
Imaoka S, Inoue K, Funae Y (1988). "Aminopyrine metabolism by multiple forms of cytochrome P-450 from rat liver microsomes: ... simultaneous quantitation of four aminopyrine metabolites by high-performance liquid chromatography". Arch. Biochem. Biophys. ...
... aminopyrine MeSH D03.383.129.539.850.077.025 --- ampyrone MeSH D03.383.129.539.850.077.150 --- dipyrone (metamizole) MeSH ...
... an aminopyrine derivative of aspirin, caffeine, and sometimes a barbiturate. Paracetamol is the active metabolite of phenacetin ...
... aminopyrine n-demethylase MeSH D08.811.682.662.582.338 --- cytochrome p-450 cyp2e1 MeSH D08.811.682.662.582.353 --- cytochrome ...
... antipyrine and aminopyrine, and vitamin B1; as well as the manufacture of dyes, inks, lacquers, perfumes, plastics, and yellow ...
Other names: 3H-Pyrazol-3-one, 4-(dimethylamino)-1,2-dihydro-1,5-dimethyl-2-phenyl-; Antipyrine, 4-(dimethylamino)-; (Dimethylamino)phenazone; Amidazophen; Amidazophene; Amidofebrin; Amidofen; Amidophen; Amidophenazone; Amidopyrazoline; Amidopyrin; Amidopyrine; Aminophenazon; Aminophenazone; Aminopyrin; Anafebrina; Brufaneuxol; Dereuma; Dimapyrin; Dimethylamino-analgesine; Dimethylaminoantipyrine; Dimethylaminoazophene; Dimethylaminophenyldimethylpyrazolone; Dipirin; Dipyrin; Dipyrine; Febrinina; Febron; Itamidone; Novamidon; Piramidon; Piridol; Piromidina; Polinalin; Pyradone; Pyramidon; Pyramidone; 4-(Dimethylamino)antipyrine; 4-(Dimethylamino)phenazone; 1,5-Dimethyl-2-phenyl-4-dimethylamino-3-pyrazolone; Amidazofen; Eufibron; Hyparon; Mamallet-A; Pirazon; 1-Phenyl-2,3-dimethyl-4-(dimethylamino)-5-pyrazolone; 1-Phenyl-2,3-dimethyl-4-dimethylaminopyrazol-5-one; 1-Phenyl-2,3-dimethyl-4-dimethylaminopyrazolone-5; 1,5-Dimethyl-4-dimethylamino-2-phenyl-3-pyrazolone; ...
Although the aminopyrine breath test has received much attention, the question has not yet been settled whether pharmacological ... Aminopyrine metabolism 14CO2-breath test aminopyrine demethylation dose dependent metabolism physical fitness ... Brodie, B.B., Axelrod, J.: The fate of aminopyrine (Pyramidon) in man and methods for the estimation of aminopyrine and its ... Assessment of aminopyrine metabolism in man by breath analysis after oral administration of14C-aminopyrine. Effects of ...
Aminopyrine; Linear Formula: C13H17N3O; find Sigma-Aldrich-D8015 MSDS, related peer-reviewed papers, technical documents, ...
VALUE OF AMINOPYRINE(VALUE OF AMINOPYRINE*†)(VALUE OF AMINOPYRINE*†) LEONARD CARDON, M.D., F.A.C.P.; OSCAR H. COMESS, M.D.; ... VALUE OF AMINOPYRINE(VALUE OF AMINOPYRINE*†)(VALUE OF AMINOPYRINE*†). Ann Intern Med. 1958;48:616-634. doi: 10.7326/0003-4819- ... Aminopyrine, by force of historical circumstances, has been such a discredited drug for many years.1, 2a, 3c, 4b, 5, 6, 7, 8 ... Quantitative Assessment of Hepatic Function by Breath Analysis after Oral Administration of [14C]aminopyrine Annals of Internal ...
MF:C13H17N3O MW:231.29 CAS:58-15-1 EINECS:200-365-8 Apperance:White fronds crystal or crystalline powder. No smell, taste slightly bitter. Product use: Antipyretic and analgesic, used for fever and headache, joint pain, neuralgia, dysmenorrhea and...
In contrast to the biphasic kinetic behavior of hepatic aminopyrine N-demethylase, brain aminopyrine N-demethylation exhibited ... In contrast to the biphasic kinetic behavior of hepatic aminopyrine N-demethylase, brain aminopyrine N-demethylation exhibited ... In contrast to the biphasic kinetic behavior of hepatic aminopyrine N-demethylase, brain aminopyrine N-demethylation exhibited ... In contrast to the biphasic kinetic behavior of hepatic aminopyrine N-demethylase, brain aminopyrine N-demethylation exhibited ...
... to understand the pain of a piece of adverse reactions and pharmacological toxicology Compound Aminopyrine Phenacetin Tablets ( ... Effect of Compound Aminopyrine Phenacetin Tablets on kidney. First, to understand the pain of a piece of adverse reactions and ... This compound contains aminopyrine and phenacetin have obvious adverse reactions. Taking the amino group can vomiting, rash, ... 2 aminopyrine react with food in the stomach, can form carcinogenic N-nitroso compounds, especially nitrosamines, therefore has ...
Aminopyrine breath test predicts surgical risk for patients with liver disease. By R A Gill, M W Goodman, G R Golfus, G R ... To determine whether the [14C] aminopyrine breath test (ABT) predicts surgical risk in patients with liver disease, it was ...
ChEMBL Compound Description] ID:, InChI_Key:, Tradenames:, Synonyms:AMINOPYRINE , AMINOPHENAZONE CYCLAMATE , AMINOPHENAZONE , ... AMINOPYRINE. ChEMBL Synonyms AMINOPYRINE , AMINOPHENAZONE CYCLAMATE , AMINOPHENAZONE , AMIDOPYRINE. Max Phase. 4 (Approved). ...
Aminopyrine. Inhaling eucalyptol, a chemical found in eucalyptus oil, might reduce the level of aminopyrine in the blood. In ... theory, the effectiveness of aminopyrine may be reduced in people who inhale eucalyptol.. Amphetamines. Inhaling eucalyptol, a ...
Aminopyrine: All drug products containing aminopyrine.. Astemizole: All drug products containing astemizole. ...
14C]aminopyrine accumulation in rabbit isolated gastric glands.. In intact gastric glands from rabbits, histamine significantly ... The following drugs were used in this study: [14C]Aminopyrine (specific activity 96.6 Ci/mmol), [3H]DTG (specific activity 35.2 ... 7). Finally, BDF 6143 up to 100 μM did not alter histamine-induced [14C]aminopyrine accumulation (n = 3; results not shown). ... 7). At this high concentration, clonidine increased [14C]aminopyrine accumulation in 2 of 4 experiments, but because of the ...
By using the two different principle methods,the standard value and uncertainty of aminopyrine content was 99.66% ± 0.08%(k = 2 ... The valuation and uncertainty evaluation of the purity determination of aminopyrine by using HPLC and acid-base titration are ... To study the valuation and uncertainty evaluation of the purity determination of aminopyrine by two different principle methods ... Valuation and Uncertainty Evaluation of the Purity Determination of Aminopyrine by Different Methods / 中国药师 ...
Aminopyrine Hart, F. D.; Boardman, P. L. (1964). "Trial of Nifenazone ("thylin")". British Medical Journal. 1 (5397): 1553-1554 ...
C.01.131 - Aminopyrine and Dipyrone *C.01.134 - Coated Potassium Salts *C.01.401 - Antibiotics ...
... aminopyrine, 4-aminoantipyrine [244]; minocycline [288]; Tl+ [130, 260], Ag+, H+ [130]; oxybuprocaine, prilocaine, mepivacaine ...
Aminopyrine sodium sulfonate; Analgin; Antipyrine, 4-(methylamino)-, monomethosulfate, sodium salt; (Antipyrinylmethylamino) ...
Aminopyrine; anafebrina; dimapyrin; ... ...
Aminopyrine and its derivatives. Cyclosporine. Amprenavir and its salts and derivatives. Cytarabine and its salts. ...
Background 14C-aminopyrine accumulation (bg) is also shown. b) Accumulation of 14C-aminopyrine in gastric glands pretreated ... Accumulation of 14C-labeled aminopyrine in db-cAMP-stimulated gastric glands. All values are expressed as percent of a value ... Accumulation of 14C-labeled aminopyrine in histamine-stimulated gastric glands. All values are expressed as percent of the ... Aminopyrine / metabolism. Arginine / pharmacology. Bucladesine / metabolism. Carbon Radioisotopes / metabolism. Enzyme ...
0 (Biomarkers); 01704YP3MO (Aminopyrine); 76W6J0943E (Flutamide); 822G987U9J (zomepirac); 83HN0GTJ6D (Cyclosporine); D8K2JPN18B ...
Aminopyrine / analogs & derivatives*. Anemia, Hemolytic / chemically induced*. Child, Preschool. Dipyrone / adverse effects*. ...
Comparison of Age-Related Peripheral Nerve Changes in Mice Housed in Either Plastic Cages with Sawdust-Covered Solid Flooring or Wire-Mesh-Floor Cages (2000 ...
DEVELOPMENT OF HEPATIC N-DEMETHYLASE ACTIVITY AS MEASURED IN VIVO BY THE AMINOPYRINE BREATH TEST *Robert J Shulman ... Rights & permissionsfor article Effect of Infant Age on Aminopyrine Breath Test Results . Opens in a new window. ... Rights & permissionsfor article DEVELOPMENT OF HEPATIC N-DEMETHYLASE ACTIVITY AS MEASURED IN VIVO BY THE AMINOPYRINE BREATH ... Effect of Infant Age on Aminopyrine Breath Test Results *Robert J Shulman ...