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propylamine/carie dentaire
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Carcinogenesis in F344 rats by N-nitrosomethyl-n-propylamine derivatives.
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The carcinogenicity of N-nitrosomethyl-n-propylamine and five of its derivatives, including N-nitrosomethyl-n-butylamine, was compared by oral administration of the compounds to inbred F344 rats. N-Nitromethyl-n-propylamine and N-nitrosomethyl-n-butylamine given in drinking water induced tumors of
Nickel nanoclusters as a novel emitter for molecularly imprinted electrochemiluminescence based sensor toward nanomolar detection of creatinine.
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In this study nickel nanoclusters (NiNCs), was promised as novel and economic electrochemiluminescence (ECL) emitter for highly sensitive and selective determination of creatinine in the presence of molecularly imprinted polymer (MIP). The uniform magnetic graphene oxide (GO-Fe3O4) MIP film was
Chiral separation of enantiomeric 1,2-diamines using molecular imprinting method and selectivity enhancement by addition of achiral primary amines into eluents.
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The imprinted polymers based on a transient complex formation between methacrylic acid and template molecules were prepared by using methacrylic acid and ethylene dimethacrylate as a cross-linking agent. The template molecules used were (R,R)-cyclohexanediamine (1), (S,S)-1,2-diphenylethylenediamine
Involvement of hydrogen peroxide in collagen cross-linking by high glucose in vitro and in vivo.
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The Maillard reaction has been implicated in cross-linking and fluorescence formation of collagen exposed to high glucose in vitro. However, several pharmacologic agents, whose action seems unrelated to pathways of nonenzymatic glycation, have been demonstrated to prevent cross-linking in diabetes.
Self-enhanced electrogenerated chemiluminescence of ruthenium(II) complexes conjugated with Schiff bases.
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In this work, we obtain two ruthenium(ii) complexes with Schiff base cavities that exhibit significantly enhanced electrochemiluminescence (ECL) intensity and quantum efficiency due to Ru(bpy)3(2+) in aqueous solution, without the addition of tri-n-propylamine (TPrA). The great increase in ECL
Carcinogenicity of N-nitrosomethyl(2-oxobutyl)amine and N-nitrosomethyl-(3-oxobutyl)amine in Syrian hamsters with special reference to the pancreas.
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Studies with oxidized derivatives of N-nitrosodi-n-propylamine suggested a structure-activity relationship between pancreatic cancer induction in Syrian hamsters and position and degree of nitrosamine oxidation. To elucidate the importance of the position of the oxidized substituent relative to the
Comparative carcinogenesis by some aliphatic nitrosamines in Fischer rats.
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The carcinogenic effectiveness of 5 simple aliphatic nitrosamines was compared by feeding to groups of 20 Fischer rats in drinking water. Nitrosodi-isobutylamine was by far the weakest carcinogen, giving rise after comparatively high doses to tumors of the nasal cavity and trachea.
Carcinogenesis in Fischer rats by nitrosodipropylamine, nitrosodibutylamine and nitrosobis(2-oxopropyl)amine given by gavage.
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Nitrosodi-n-propylamine, nitrosodi-n-butylamine and the ketone nitrosobis(2-oxopropyl)amine were administered by gavage to F344 rats at doses of 1 and 2 mmol for 30 weeks. The higher level of nitrosodipropylamine led to death of all the animals with carcinomas of the liver, nasal cavity and
Carcinogenesis in rats by nitrosodimethylamine and other nitrosomethylalkylamines at low doses.
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Four nitrosomethylalkylamines were given to F344 rats in drinking water at concentrations of 0.22 mM or less. The total doses delivered to each animal were 0.5 and 0.2 mmol of nitrosodimethylamine (NDMA), 0.6 mmol of nitrosomethyl-2-oxopropylamine (NMOP) and nitrosomethyl-2-hydroxy-propylamine
A rigid linker-scaffold for solid-phase synthesis of dimeric pharmacophores.
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Bifunctional linker-scaffolds (compounds 1-3) were designed to meet several criteria for solid-phase syntheses of bivalent ligands. They have two amine-functionalized arms that can be differentially protected. Elaboration of these arms could give ligand-pharmacophore dimers wherein the two active
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