Search results for "Pyrimidine Nucleosides"

showing 3 items of 3 documents

Role of Kras Status in Patients with Metastatic Colorectal Cancer Receiving First-Line Chemotherapy plus Bevacizumab: A TTD Group Cooperative Study

2012

Background: In the MACRO study, patients with metastatic colorectal cancer (mCRC) were randomised to first-line treatment with 6 cycles of capecitabine and oxaliplatin (XELOX) plus bevacizumab followed by either single-agent bevacizumab or XELOX plus bevacizumab until disease progression. An additional retrospective analysis was performed to define the prognostic value of tumour KRAS status on progression-free survival (PFS), overall survival (OS) and response rates. Methodology/Principal Findings: KRAS data (tumour KRAS status and type of mutation) were collected by questionnaire from participating centres that performed KRAS analyses. These data were then cross-referenced with efficacy da…

MaleOncologyOrganoplatinum Compoundsendocrine system diseasesEpidemiologyColorectal cancer:Named Groups::Persons::Age Groups::Adult::Middle Aged [Medical Subject Headings]DeoxycytidineMetastasis:Organisms::Eukaryota::Animals::Chordata::Vertebrates::Mammals::Primates::Haplorhini::Catarrhini::Hominidae::Humans [Medical Subject Headings]Antineoplastic Combined Chemotherapy ProtocolsPathologyMedicineNeoplasm Metastasisgeneslcsh:Sciencemediana edad:Analytical Diagnostic and Therapeutic Techniques and Equipment::Therapeutics::Clinical Protocols::Antineoplastic Protocols::Antineoplastic Combined Chemotherapy Protocols [Medical Subject Headings]Aged 80 and overanciano:Chemicals and Drugs::Organic Chemicals::Organometallic Compounds::Organoplatinum Compounds [Medical Subject Headings]Cancer Risk FactorsClinical Pharmacologyprotocolos de quimioterapia antineoplásica combinadaColon AdenocarcinomaPronósticoCombination chemotherapyadultoPrognosisBevacizumabOxaliplatinpronósticoOncologyMedicineOncology Agentsmedicine.medical_specialty:Phenomena and Processes::Genetic Phenomena::Genetic Variation::Mutation [Medical Subject Headings]FluorouraciloBevacizumab:Chemicals and Drugs::Heterocyclic Compounds::Heterocyclic Compounds 1-Ring::Pyrimidines::Pyrimidine Nucleosides::Cytidine::Deoxycytidine [Medical Subject Headings]:Check Tags::Male [Medical Subject Headings]Molecular GeneticsCapecitabine:Chemicals and Drugs::Amino Acids Peptides and Proteins::Proteins::Blood Proteins::Immunoproteins::Immunoglobulins::Antibodies::Antibodies Monoclonal::Antibodies Monoclonal Humanized [Medical Subject Headings]Gastrointestinal TumorsGenetics:Named Groups::Persons::Age Groups::Adult [Medical Subject Headings]HumansClinical TrialsBiologyneoplasmsCapecitabineAgedlcsh:R:Diseases::Neoplasms::Neoplasms by Site::Digestive System Neoplasms::Gastrointestinal Neoplasms::Intestinal Neoplasms::Colorectal Neoplasms [Medical Subject Headings]:Phenomena and Processes::Genetic Phenomena::Genetic Structures::Genome::Genome Components::Genes::Genes Neoplasm::Oncogenes::Proto-Oncogenes::Genes ras [Medical Subject Headings]medicine.diseasedigestive system diseasesOxaliplatin:Check Tags::Female [Medical Subject Headings]PharmacogeneticsMutationlcsh:QfluorouraciloMultivariate analysisDesoxicitidinahumanosCancer Treatment:Named Groups::Persons::Age Groups::Adult::Aged::Aged 80 and over [Medical Subject Headings]lcsh:Medicinemedicine.disease_causeNeoplasias colorrectalesSurgical oncologyBasic Cancer Research:Chemicals and Drugs::Heterocyclic Compounds::Heterocyclic Compounds 1-Ring::Pyrimidines::Pyrimidinones::Uracil::Fluorouracil [Medical Subject Headings]Clinical Trials (Cancer Treatment)metástasis neoplásicaMetástasis neoplásicaMultidisciplinaryMiddle AgedGenetic EpidemiologyProtocolos de quimioterapia antineoplásica combinadaFemaleAntiangiogenesis TherapyFluorouracilKRASColorectal NeoplasmsResearch Articlemedicine.drugAdultDrugs and DevicesClinical Pathologyneoplasias colorrectalesClinical Research DesignGenetic Causes of CancerAntibodies Monoclonal HumanizedAntibodiesRectal CancerAntibody TherapyDiagnostic MedicineInternal medicine:Diseases::Neoplasms::Neoplastic Processes::Neoplasm Metastasis [Medical Subject Headings]:Named Groups::Persons::Age Groups::Adult::Aged [Medical Subject Headings]mutaciónClinical GeneticsMutaciónbusiness.industryPharmacoepidemiologyCancers and NeoplasmsHuman GeneticsChemotherapy and Drug TreatmentdesoxicitidinaGenes rasanticuerposGenetics of Diseasebusinesscompuestos organoplatinoPLoS ONE
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Synthesis and preliminary biological evaluation of a new pyridocarbazole derivative covalently linked to a thymidine nucleoside as a potential target…

2003

The therapy of human cancer is one of the more pursued goals by medicinal chemistry research. Most of the compounds clinically used as a treatment owe their efficacy to their cytotoxic interaction (direct or indirect) with nuclear DNA. This interaction results in the inhibition of DNA synthesis and the degradation of nucleic strands. Ellipticine is a naturally occurring 6H-pyrido[4,3-b]carbazole alkaloid endowed with antitumor activity, and several ellipticine derivatives have been used in clinical trials. We previously reported some 1,4-dimethyl-9H-carbazole derivatives structurally related to ellipticine. The purpose of our research was to transform the pyridocarbazole in a prodrug so tha…

PyridonesCarbazolesDrug Evaluation PreclinicalAntineoplastic Agentschemistry.chemical_compoundDrug Delivery SystemsCell Line TumorDrug DiscoveryHumansCytotoxicitynucleoside analogueDNA synthesisBiological activityGeneral ChemistryGeneral MedicineProdrugorganic synthesisPyrimidine NucleosidesBiochemistrychemistryNucleic acidantitumour activityThymidineNucleosideDNAThymidineChemicalpharmaceutical bulletin
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Unified model for the ultrafast decay of pyrimidine nucleobases.

2006

Ultrafast decay processes detected after absorption of UV radiation in gas-phase pyrimidine nucleobases uracil, thymine, and cytosine are ascribed to the barrierless character of the pathway along the low-lying 1(pipi*) hypersurface connecting the Franck-Condon region with an out-of-plane distorted ethene-like conical intersection with the ground state. Longer lifetime decays and low quantum yield emission are on the other hand related to the presence of a 1(pipi*) state planar minimum on the S1 surface and the barriers to access other conical intersections. A unified model for the three systems is established on the basis of accurate multiconfigurational CASPT2 calculations, whereas the ef…

Quantitative Biology::BiomoleculesPyrimidineQuantum yieldUracilUnified ModelConical intersectionPyrimidine NucleosidesSurfaces Coatings and FilmsNucleobaseThyminechemistry.chemical_compoundchemistryModels ChemicalMaterials ChemistryPhysics::Chemical PhysicsPhysical and Theoretical ChemistryAtomic physicsGround stateThe journal of physical chemistry. B
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