6 Mercaptopurine
Mostrando 1-12 de 36 artigos, teses e dissertações.
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1. Optimization and validation of an RP-HPLC method for the estimation of 6-mercaptopurine in bulk and pharmaceutical formulations
Descreve-se método de CLAE em fase reversa para a determinação de mercaptopurina a granel e em comprimidos. A cromatografia foi realizada em coluna C18, utilizando mistura de acetonitrila em tampão acetato de sódio 0,05 mol/L (10:90 v/v) como fase móvel, com fluxo de 1 mL/min e detecção a 324 nm. O tempo de retenção do fármaco foi de 3,25 min. A r
Braz. J. Pharm. Sci.. Publicado em: 2014-12
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2. Design and optimization of novel in situ gel of mercaptopurine for sustained drug delivery
Mercaptopurine é um antagonista da purina, pertencente à a classe dos antimetabólitos. A sua absorção oral é errática e variável através do TGI, com biodisponibilidade de 5-37 % e pertence à classe IV, de acordo com o Sistema de Classificação Biofarmacêutica. O foco do presente estudo foi melhorar a solubilidade da mercaptopurina e liberar o fá
Braz. J. Pharm. Sci.. Publicado em: 2014-03
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3. Síntese e avaliação biológica de derivados de 6-Mercaptopurina, carboidratos e aminoálcoois
A tese de doutorado intitulada Síntese e Avaliação Biológica de Derivados de 6- Mercaptopurina, Carboidratos e Aminoálcoois está apresentada em três capítulos que descrevem a síntese e caracterização de compostos com potencial atividade antiparasitária (Leishmania, Plasmodium berghei), antibacteriana (bactérias Gram positiva e negativa, Mycobact
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/06/2011
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4. Compliance with a protocol for acute lymphoblastic leukemia in childhood
BACKGROUND: Remission rates achieved after the initial treatment of acute lymphoblastic leukemia may be similar in both developed and developing countries, but relapse rates are much higher in the latter. Thus, other reasons are needed, in addition to biological characteristics of the leukemic cells themselves, to explain the unfavorable evolution of patient
Revista Brasileira de Hematologia e Hemoterapia. Publicado em: 2011-06
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5. Síntese e Avaliação Biológica de Derivados Cíclicos de Tiopurina e de Derivados de Quinolinas Conjugados com Ácido Cólico Via Click Chemistry
This dissertation entitled Synthesis and Biological Evaluation of Cyclical Derivatives of Thiopurine and Quinolines Derivatives Conjugated with Cholic Acid via Click Chemistry was divided in two chapters that describe the synthesis of compounds with potential anti-parasitic activity. The first chapter describes the synthesis of 6-mercaptopurine (6-MP) deriva
Publicado em: 2009
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6. ImobilizaÃÃo de Xantina Oxidase em Polissiloxano-Ãlcool PolivinÃlico Magnetizado
Xanthine oxidase (xanthine:oxygen oxidoreductase, XOD, E.C. 1.17.3.2) is a relevant molybdenum enzyme in clinical analysis with a well-established structure and mode of action. It has already been immobilized on several matrices such as polyacrylamide gel beads, polyamide-11, Dacron, polyaniline-silicone, modified carbon paste electrode, nanocrystal gold-car
Publicado em: 2005
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7. An improved HPLC method for the quantitation of 6-mercaptopurine and its metabolites in red blood cells
A procedure is described for the rapid determination of the intra-erythrocyte concentration of 6-mercaptopurine (6-MP) and its metabolites, 6-thioguanine nucleotides (6-TGN) and 6-methylmercaptopurine (6-MMP). Erythrocytes (8 x 10(8) cells) in 350 µl Hanks solution containing 7.5 mg dithiothreitol were treated with 50 µl 70% perchloric acid. The precipitat
Brazilian Journal of Medical and Biological Research. Publicado em: 2004-05
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8. Immunosuppressive Effect of 6-Mercaptopurine and Mitomycin C
6-Mercaptopurine and mitomycin C were used in combination drug therapy to produce a prolongation of skin allograft survival.
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9. Use of Escherichia coli Mutants to Evaluate Purines, Purine Nucleosides, and Analogues
Of 142 purines, purine nucleosides, and analogues tested for inhibition of growth of Escherichia coli B Hill, 45 were active. Of these, 27 were evaluated for inhibition of other E. coli lines, including those resistant to 6-thioguanine, 2-fluoroadenosine, 2,6-diaminopurine, or 6-mercaptopurine. Most toxic to the parent lines were 2-fluoroadenosine, 2-fluoroa
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10. Enhanced Toxicity for Mice of Combinations of Bacterial Endotoxin with Antitumor Drugs
The toxicity of Salmonella typhosa 0901W endotoxin to mice was potentiated by (per kilogram) 1 mg of colchicine, 20 mg of emetine, 100 mg of 6-mercaptopurine, 100 mg of 6-methylmercaptopurine riboside, 75 mg of methotrexate, 2 mg of sparsomycin, or 2.5 mg of vinblastine. No potentiation of endotoxin lethality was evident with simultaneously administered (per
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11. Congenital thiopurine methyltransferase deficiency and 6-mercaptopurine toxicity during treatment for acute lymphoblastic leukaemia.
Two children with acute lymphoblastic leukaemia (ALL) taking daily 6-mercaptopurine as part of a national UK therapeutic trial repeatedly developed profound myelosuppression on 25% of the standard protocol dose. Both were found to have undetectable intracellular activity of thiopurine methyltransferase (TPMT), an enzyme controlling one of the major alternati
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12. Metabolism of 6-Mercaptopurine by Resistant Escherichia coli Cells1
Coggin, Joseph H. (University of Chicago, Chicago, Ill.), Muriel Loosemore, and William R. Martin. Metabolism of 6-mercaptopurine by resistant Escherichia coli cells. J. Bacteriol. 92:446–454. 1966.—6-Mercaptopurine (MP) utilization as a source of purine in MP-sensitive and -resistant cultures of Escherichia coli was investigated. The label of MP-8-C14 a