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Pagina 1 a partire dal 121 risultati
A food-born heterocyclic amine, 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP), suppresses tumor necrosis factor-alpha expression in lipoteichoic acid-stimulated RAW 264.7 cells.
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2-Amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP), a heterocyclic amine with strong carcinogenic and mutagenic potential, is created abundantly in the overcooking of meat and fish. Carcinogenic toxicants are often implicated in immunosuppression, where cancer cells are not easily eliminated by
Synthesis of new pyrrolo[2, 3-b]pyridines as a potent inhibitor of tumour necrosis factor alpha.
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The MAP kinase p38 plays a key role in the biosynthesis of the inflammatory cytokines tumor necrosis factor alpha (TNF-alpha) and 1L-1beta. Accordingly, new pyrrolo[2, 3-]pyridine derivatives 5a-d were prepared from 2-amino-3-cyanopyrroles 3a-d via the intermediate propenylaminopyrroles 4a-d. Then
Synthesis and bioactivities of novel bicyclic thiophenes and 4,5,6,7-tetrahydrothieno[2,3-c]pyridines as inhibitors of tumor necrosis factor-alpha (TNF-alpha) production.
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We synthesized bicyclic thiophenes and 4,5,6,7-tetrahydrothieno[2,3-c]pyridine derivatives, and evaluated for their ability to inhibit LPS-stimulated production of TNF-alpha. Several compounds revealed excellent in vivo activity. Furthermore, an effective compound was found in adjuvant-induced
Synthesis and bioactivities of novel 4,5,6,7-tetrahydrothieno[2,3-c]pyridines as inhibitors of tumor necrosis factor-alpha (TNF-alpha) production.
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Novel 4,5,6,7-tetrahydrothieno[2,3-c]pyridine derivatives were synthesized and evaluated for their abilities to inhibit lipopolysaccharide (LPS)-stimulated production of TNF-alpha in rat whole blood. Several of these compounds exhibited potent inhibitory activity.
Adamantylaminopyrimidines and -pyridines are potent inducers of tumor necrosis factor-alpha.
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A series of (1-adamantyl)aminopyrimidine and -pyridine derivatives was prepared by adamantyl cation attack on amino heterocycles. The adamantylated compounds, particularly 2-(1-adamantyl)amino-6-methylpyridine, were found to be potent TNF-alpha inducers in murine melanoma cells transduced with gene
The cell death pathway induced by metal halide complexes of pyridine and derivative ligands in hepatocellular carcinoma cells - necrosis or apoptosis?
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BACKGROUND
Drugs designed to restore programmed cell death might be effective against many cancer. It was aimed to study the possible apoptotic-necrotic effects of the pyridinehalide complexes such as dichlorodipyridinepalla-dium(ll) (PdCl2L1(2)), dichlorodipyridinenickel(ll) (NiCl2L1(2)),
Effect of metopirone and 3-(1,2,3,4-tetrahydro-1-oxo-2-naphthyl)-pyridine on the metabolism of corticosteroids and DMBA in relation to adrenal necrosis.
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Metabolism of metopirone and 3-(1,2,3,4-tetrahydro-1-oxo-2 naphthyl)-pyridine in relation to DMBA induced adrenal necrosis.
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Nicotinamide late protective effects against carbon tetrachloride-induced liver necrosis.
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Nicotinamide (NIC) is known to increase the synthesis of pyridine nucleotides and also to inhibit the hydrolysis of them to ADP-ribose, which in turn is involved in Ca2+ release from mitochondria via the ADP ribosylation of crucial mitochondrial proteins. In this work, we test the potential ability
Pyridine N-oxide derivatives inhibit viral transactivation by interfering with NF-kappaB binding.
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Pyridine N-oxide derivatives represent a new class of anti-HIV compounds for which some members exclusively inhibit HIV-1 RT, whereas other members act, additionally or alternatively, at a post-integrational event in the replicative cycle of HIV. A prototype pyridine N-oxide derivative, JPL-32,
Adamantylsulfanyl- and N-adamantylcarboxamido-derivatives of heterocycles and phenols: synthesis, crystal structure, tumor necrosis factor-alpha production-enhancing properties, and theoretical considerations.
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The synthesis of several adamantylthio heterocycles and S-adamantylated thiocresols is reported. The attack of the adamantyl cation formed from 1-adamantan-1-ol in refluxing trifluoroacetic acid provides the corresponding adamantylsulfanyl compounds. The use of the adamantyl cation in the Ritter
Silver pyridine-2-sulfonate complex - its characterization, DNA binding, topoisomerase I inhibition, antimicrobial and anticancer response.
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In the current study the ability of silver pyridine-2-sulfonate complex to exert multiple biological activities is compared with the pharmacological action of silver sulfadiazine (AgSD). Polymeric form of {[Ag(py-2-SO3)]}n (AgPS) was synthesized and characterized by analytical techniques (IR, CHN,
Olfactory and hepatic changes following a single inhalation exposure of 3-trifluoromethyl pyridine in rats: concentration and temporal aspects.
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The effects of a single exposure to 3-trifluoromethyl pyridine (3FMP), were investigated in two studies. In the first study, rats were exposed nose only to 0, 50 or 800 ppm 3FMP for periods of 15 min to 4 h. Half were sacrificed on day 3 and the remainder on day 10. In the second study, rats were
Synthesis and photochemical properties of pH responsive tris-cyclometalated iridium(III) complexes that contain a pyridine ring on the 2-phenylpyridine ligand.
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In our previous publication, it was reported that fac-Ir(atpy)3 3 (atpy = 2-(5'-amino-4'-tolyl)pyridine), which contains three amino groups at the 5'-position of the atpy ligands, exhibits a pH-dependent change in the color of the emitted radiation. Aqueous solution of 3 shows a weak red emission
Structure dependent selective efficacy of pyridine and pyrrole based Cu(II) Schiff base complexes towards in vitro cytotoxicity, apoptosis and DNA-bases binding in ground and excited state.
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This work highlights a systematic and comparative study of the structure-dependent influence of a series of biologically active Cu(II) Schiff base complexes (CSCs) on their in vitro cytotoxicity, apoptosis and binding with polymeric DNA-bases in ground and photo-excited states. The
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