Search results for "LYMPHOMA"

showing 10 items of 707 documents

Metilazione del DNA in artrite reumatoide

2005

Lo stato di metilazione del DNA genomico e del gene PTHrP è stato valutato con tecniche molecolari e citogenetiche in artrite reumatoide (AR), patologia autoimmune caratterizzata anche da alta incidenza di linfomi e da ipercalcemia per overespressione del gene PTHrP. La metilazione del DNA, infatti, ha un ruolo critico nello sviluppo delle malattie neoplastiche; il gene PTHrP avendo tre promotori uno dei quali contiene un’isola CpG è un buon candidato per la deregolazione da alterato pattern di metilazione locale. Le indagini sulla metilazione genomica, condotte su DNA estratto da sangue periferico di pazienti e di donatori e amplificato in reazioni di Methylation-Sensitive Arbitrarily Prim…

Settore BIO/18 - Geneticainstead chromosomes of controls were almost uniformly decorated by brilliant grains. Studies on methylation of PTHrP gene promoter 2 performed on five CpG island internal sites using the Methylation-Sensitive Restriction Endonuclease Multiplex (MSREM)-PCR showed that one of the sites nearest the trascription starting point is heavy methylated in a significantly high number of RA patients. Thus RA seems to be characterized by genomewide hypomethylation associated with local hypermethylation like the most part of tumors. This result raises the possibility that susceptibility to lymphomas is related to abnormal DNA methylation levels and suggests the opportunity to evaluate the DNA methylation status in RA patientin fact the demethylating therapies together with diet and life style can act towards an increase of tumor risk. Future studies using a larger number of subjects could confirm these findings.Rheumatoid Arthritis (RA) is a chronic multisystem inflammatory disease characterized by high recurrence of lymphomas as well as hypercalcemia due to PTHrP overexpression. Because of DNA methylation plays a critical role in development of neoplasias we determined in RA patients the global DNA methylation status and local methylation pattern of the CpG island of one of the three promoters of PTHrP gene utilizing molecular and cytogenetic techniques. Investigations performed on DNA from peripheral blood of patients and donors amplified by Methylation-Sensitive Arbitrarily Primed (MeS-AP)-PCR indicated that RA is strongly associated with global DNA hypomethylation. Similarly chromosomal DNA methylation pattern analysis by indirect immunofluorescence technique with anti 5-methylcitosine antibody showed all peripheral lymphocyte metaphases from RA patients with chromosomes weakly fluorescent without discrete grain
researchProduct

An unusual presentation of T-lymphoma in a Crohn's 4 disease patient treated with combo therapy: We are 5 willing to take a risk of serious adverse e…

2012

Settore MED/09 - Medicina InternaT-lymphoma.Crohn's disease.combotherapy
researchProduct

Whole-body diffusion weighted MR and FDG-PET/CT in Hodgkin lymphoma: predictive role before treatment and early assessment aftrer two courses of chem…

2017

To evaluate whether whole-body MR has a predictive role before treatment and may asses the response after two courses of chemotherapy in comparison to FDG-PET/CT

Settore MED/36 - Diagnostica Per Immagini E Radioterapialymphoma MR-Diffusion/Perfusion PET-CT
researchProduct

Functional characterisation of the first HSP110 inhibitors.

2023

Heat shock proteins are molecular chaperones highly expressed in haematological malignancies. My laboratory has shown that the heat shock protein HSP110 is a new and important therapeutic target In colorectal cancer and in non-Hodgkin's lymphoma. As there were no existing inhibitors of HSP110, a screening strategy of a chemical library was carried out and allowed the identification of two molecules capable of specifically inhibiting the chaperone activity of HSP110. My thesis objective was to characterise and functionally validate these newly identified molecules in diffuse large cell B lymphomas. I have shown that one of these molecules limits the interaction of HSP110 with the SYK signall…

Signaling pathwaysVoies de signalisationHeat Shock Protein[SDV.BBM.BM] Life Sciences [q-bio]/Biochemistry Molecular Biology/Molecular biologyProtéine de choc thermiqueTargeted therapyActivated B Cell Diffuse Large B-Cell LymphomaLymphome B Diffus à Grandes Cellules de Type ActivéLymphome B Primitif du MédiastinCancer treatment[SDV.BBM.BC] Life Sciences [q-bio]/Biochemistry Molecular Biology/Biochemistry [q-bio.BM]Primary Mediastinal B cell LymphomaThérapie cibléeTraitements du cancer
researchProduct

New combinations for mantle cell lymphoma: concerted action needed.

2011

Sirolimusbusiness.industryLymphoma Mantle-Cellmedicine.diseaseArticleAntibodies Monoclonal Murine-DerivedOncologyAction (philosophy)Antineoplastic Combined Chemotherapy ProtocolsCancer researchMedicineHumansMantle cell lymphomabusinessRituximabThe Lancet. Oncology
researchProduct

Splenic marginal zone lymphoma with or without villous lymphocytes

2004

The Integruppo Italiano Linfomi (IIL) carried out a study to assess the outcomes of splenic marginal zone lymphoma and to identify prognostic factors in 309 patients. The 5-year cause-specific survival (CSS) rate was 76%. In univariate analysis, the parameters predictive of shorter CSS were hemoglobin levels below 12 g/dL (P < .001), albumin levels below 3.5 g/dL (P = .001), International Prognostic Index (IPI) scores of 2 to 3 (P < .001), lactate dehydrogenase (LDH) levels above normal (P < .001), age older than 60 years (P = .01), platelet counts below 100,000/microL (P = .04), HbsAg-positivity (P = .01), and no splenectomy at diagnosis (P = .006). Values that maintained a negative influe…

Splenic marginal zone lymphoma
researchProduct

Bioactive polyketides and alkaloids from Penicillium citrinum , a fungal endophyte isolated from Ocimum tenuiflorum

2013

Chemical investigation of the endophytic fungus Penicillium citrinum cultured on white beans or on rice led to the isolation of two new alkaloids (1 and 2), along with fourteen known polyketides (6-12, 14-20) and four known alkaloids (3-5, and 13). The structures of the isolated compounds were determined by extensive analysis of the 1D, 2D NMR, and MS data, and by comparison with the literature. Compound 13, which had been previously obtained only by chemical synthesis, was isolated as a natural product for the first time, while compound 6 was firstly reported as a fungal metabolite. A re-isolation of sclerotinin A (14) revealed it to be a diastereoisomeric mixture (14a and 14b), whose ster…

Staphylococcus aureusLymphomaStereochemistryAntineoplastic Agentsmedicine.disease_causeChemical synthesisEndophyteInhibitory Concentration 50Micechemistry.chemical_compoundAlkaloidsCell Line TumorDrug DiscoveryEndophytesmedicineAnimalsPenicillium citrinumCytotoxicityPharmacologyBiological ProductsNatural productMolecular StructurebiologyPenicilliumGeneral Medicinebiology.organism_classificationOcimumAnti-Bacterial AgentsOcimumchemistryStaphylococcus aureusPolyketidesAntibacterial activityFitoterapia
researchProduct

Sparse kernel methods for high-dimensional survival data

2008

Abstract Sparse kernel methods like support vector machines (SVM) have been applied with great success to classification and (standard) regression settings. Existing support vector classification and regression techniques however are not suitable for partly censored survival data, which are typically analysed using Cox's proportional hazards model. As the partial likelihood of the proportional hazards model only depends on the covariates through inner products, it can be ‘kernelized’. The kernelized proportional hazards model however yields a solution that is dense, i.e. the solution depends on all observations. One of the key features of an SVM is that it yields a sparse solution, dependin…

Statistics and ProbabilityLung NeoplasmsLymphomaComputer sciencecomputer.software_genreComputing MethodologiesBiochemistryPattern Recognition AutomatedArtificial IntelligenceMargin (machine learning)CovariateCluster AnalysisHumansComputer SimulationFraction (mathematics)Molecular BiologyProportional Hazards ModelsModels StatisticalTraining setProportional hazards modelGene Expression ProfilingComputational BiologyComputer Science ApplicationsSupport vector machineComputational MathematicsKernel methodComputational Theory and MathematicsRegression AnalysisData miningcomputerAlgorithmsSoftwareBioinformatics
researchProduct

ChemInform Abstract: Synthesis, Structure Determination by NMR, and Inhibitory Activity Against Mouse Lymphoma Cells (L5178-y) of Dipyrimidothiophene…

2010

StereochemistryChemistryMouse LymphomaGeneral MedicineInhibitory postsynaptic potentialCombinatorial chemistryChemInform
researchProduct

Synthesis and in vitro antileukemic activity of new 4-triazenopyrazole derivatives

2003

Several new 4-(3,3-dimethyltriazeno)-5-benzamidopyrazole derivatives were prepared by reacting 4-diazo-5-benzamidopyrazole derivatives with dimethylamine. The compounds were tested at 10 microM for their vitro antileukemic activity against K562 (Human chronic myelogenous leukemia) and Raji (human Burkitt limphoma ) cell lines. Dacarbazine and methotrexate were used for comparative purpose. The 3-methyl-4-(3,3-dimethyltriazeno)-5-(substituted benzamido)pyrazoles, bearing the pyrazole nucleus free at 1 position, resulted more active than the 1-(substituted phenyl)-3-methyl-4-(3,3-dimethyltriazeno)-5-benzamidopyrazoles. Dacarbazine at 10 microM showed no activity in the above tests. The observ…

StereochemistryDacarbazinePharmaceutical ScienceAntineoplastic AgentsPyrazoleSettore BIO/19 - Microbiologia GeneraleInhibitory Concentration 50Structure-Activity Relationshipchemistry.chemical_compoundCytochrome P-450 Enzyme SystemCell Line TumorLeukemia Myelogenous Chronic BCR-ABL PositiveDrug DiscoverymedicineHumansDimethylamine4-Triazenopyrazoles Antiproliferative activity In vitro antileukemic acitivityDemethylationTriazinesGeneral MedicineBurkitt LymphomaSettore CHIM/08 - Chimica FarmaceuticaIn vitroRaji cellchemistryMechanism of actionPyrazolesGrowth inhibitionmedicine.symptommedicine.drugIl Farmaco
researchProduct