Search results for " lymphoid tissue"

showing 10 items of 11 documents

Warthin's tumor distribution within the parotid gland. A feasible etiologic source from lymph nodal tissue.

2010

AIM: Warthin's tumor (WT) is the second commonest parotid gland neoplasm after pleomorphic adenoma (PA). It mainly arises from the lower pole of the superficial parotid lobe (i.e., tail of gland), a site with the greatest distribution of intra-parotid lymph nodes, and its definitive etiopathogenesis is still unclear. The aim of this study was to support the strict topic and etiologic link hypothesised between this tumor and the intraparotid lymph nodes, as being massively present in the tail, by assessing the WT distribution within the parotid gland. METHODS: Seventy-one WTs excised from 64 patients were compared retrospectively with 134 PAs from 133 patients, as controls. In all sample, st…

AdultAged 80 and overMaleAdenolymphoma parotid gland lymphoid tissueMiddle AgedAdenolymphomaParotid Neoplasmsstomatognathic diseasesYoung Adultstomatognathic systemHumansFemaleAgedRetrospective Studies
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Obstructive sleep apnoea in adult patients post-tonsillectomy

2021

Background: The impact of removing the upper airway lymphoid tissue and in particular, tonsillectomy, in adults with OSA has not been demonstrated in large populations. Aims: To compare the severity of OSA and the prevalence of cardiovascular, metabolic and respiratory co-morbidities between patients with OSA who had undergone previous tonsillectomy and those who had not. Methods: The 19,711 participants in this study came from the European sleep apnea database (ESADA) which comprises data from unselected adult patients aged 18–80 years with a history of symptoms suggestive of OSA referred to sleep centers throughout Europe. Results: There were no differences between the two groups in terms…

AdultPediatricsmedicine.medical_specialtymedicine.medical_treatment[SDV]Life Sciences [q-bio]ESADALymphoid tissue overgrowthSettore MED/10 - Malattie Dell'Apparato Respiratorio03 medical and health sciencesSleep apnoea0302 clinical medicinemedicineHumansMass indexRespiratory systemTonsillectomySleep Apnea ObstructiveAdult patientsbusiness.industrySleep apneaGeneral MedicineESADA ; Lymphoid tissue overgrowth ; Sleep apnoea ; Tonsillectomy.medicine.diseaseSleep in non-human animalsrespiratory tract diseasesTonsillectomy[SDV] Life Sciences [q-bio]Europe030228 respiratory systemDiabetes Mellitus Type 2Lower prevalenceTonsillectomy.AirwaybusinessSleep030217 neurology & neurosurgery
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New route of lymphocyte diapedesis through High endothelial venules (HEVs) in peripheral and mucosa-associated lymphoid tissue

2009

High endothelial venules (HEVs)lymphocytediapedesimucosa-associated lymphoid tissue
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MALT1 is deregulated by both chromosomal translocation and amplification in B-cell non-Hodgkin lymphoma

2003

The MALT1 gene was identified through its involvement in t(11;18)(q21;q21), seen in 30% of cases of mucosa-associated lymphoid tissue (MALT) lymphoma. Here, we show that deregulated MALT1 expression may occur in B-cell non-Hodgkin lymphoma (B-NHL) of various histologic subtypes either through translocation to the immunoglobulin heavy chain (IGH) locus or by genomic amplification. First, 2 cases, one case of MALT lymphoma and another of aggressive marginal zone lymphoma (MZL) with t(14;18)(q32;q21), cytogenetically identical to the translocation involving BCL2, were shown by fluorescence in situ hybridization (FISH) to involve MALT1, which lies about 5 Mb centromeric of BCL2. Molecular cloni…

MaleLymphoma B-CellImmunologyBiologyBiochemistryTranslocation Geneticimmune system diseaseshemic and lymphatic diseasesGene duplicationmedicineHumansRNA NeoplasmAgedChromosomes Human Pair 14medicine.diagnostic_testGene Expression ProfilingGene AmplificationMALT lymphomaLymphoma B-Cell Marginal ZoneCell BiologyHematologyMiddle Agedmedicine.diseaseMolecular biologyGenes bcl-2Neoplasm ProteinsGene Expression Regulation NeoplasticGene expression profilingMALT1Mucosa-Associated Lymphoid Tissue Lymphoma Translocation 1 ProteinCaspasesB-Cell Non-Hodgkin LymphomaImmunoglobulin heavy chainFemaleChromosomes Human Pair 18Comparative genomic hybridizationFluorescence in situ hybridizationBlood
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Gastric and gingival localization of mucosa-associated lymphoid tissue (MALT) lymphoma. An immunohistochemical, virological and clinical case report.

1999

Non-Hodgkin's lymphomas (NHL) of the mucosa-associated lymphoid tissue (MALT) are characterized by their mucosal and glandular tissue localization. The case described here falls into the European-American classification of a low-grade B-cell lymphoma of the MALT type, with a gingival lesion 2 years after a gastric lesion. The pathogenetic mechanisms of NHL in oral MALT and the diagnosis and treatment are discussed.

MalePathologymedicine.medical_specialtyGingival NeoplasmLesionimmune system diseasesStomach Neoplasmshemic and lymphatic diseasesGastric mucosamedicineHumansGingival Neoplasmsbiologybusiness.industryRemission InductionMouth Mucosafood and beveragesMALT lymphomaLymphoma B-Cell Marginal ZoneHelicobacter pyloriMiddle Agedbiology.organism_classificationmedicine.diseaseImmunohistochemistrydigestive system diseasesLymphomamedicine.anatomical_structureLymphatic systemGastric MucosaDNA ViralHerpesvirus 8 HumanPeriodonticsmedicine.symptombusinessMucosa-associated lymphoid tissueJournal of periodontology
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Defective stromal remodeling and neutrophil extracellular traps in lymphoid tissues favor the transition from autoimmunity to lymphoma

2013

Abstract Altered expression of matricellular proteins can become pathogenic in the presence of persistent perturbations in tissue homeostasis. Here, we show that autoimmunity associated with Fas mutation was exacerbated and transitioned to lymphomagenesis in the absence of SPARC (secreted protein acidic rich in cysteine). The absence of SPARC resulted in defective collagen assembly, with uneven compartmentalization of lymphoid and myeloid populations within secondary lymphoid organs (SLO), and faulty delivery of inhibitory signals from the extracellular matrix. These conditions promoted aberrant interactions between neutrophil extracellular traps and CD5+ B cells, which underwent malignant …

MyeloidLymphoid Tissue: immunologyLymphomaNeutrophilsChronic lymphocytic leukemiaAutoimmunityOsteonectin: geneticsCHRONIC LYMPHOCYTIC-LEUKEMIA; SYSTEMIC-LUPUS-ERYTHEMATOSUS; INHIBITORY RECEPTOR LAIR-1; KAPPA-B ACTIVATION; MARGINAL ZONE; INFLAMMATORY DISORDERS; MATRICELLULAR PROTEIN; SPARCMalignant transformationExtracellular matrixKAPPA-B ACTIVATIONLymphoma: immunologyMicehemic and lymphatic diseasesOsteonectinSYSTEMIC-LUPUS-ERYTHEMATOSUSNF-kappa B: immunologyCells CulturedTissue homeostasisB-LymphocytesCulturedNF-kappa BLymphoid Tissue: cytologyCell biologyCD5: immunologyExtracellular MatrixMutant Strainsmedicine.anatomical_structureINHIBITORY RECEPTOR LAIR-1OncologyCD95Stromal cellLymphoid TissueCellsBiologyCD95: geneticsCD5 AntigensINFLAMMATORY DISORDERSExtracellular Matrix: immunologymedicineAnimalsHumansfas ReceptorAntigensB-Lymphocytes: immunologyMATRICELLULAR PROTEINCHRONIC LYMPHOCYTIC-LEUKEMIASPARCLymphoma: geneticsNeutrophil extracellular trapsmedicine.diseaseAnimals; Antigens; Autoimmunity; B-Lymphocytes; B-Lymphocytes: immunology; CD5; CD5: immunology; CD95; CD95: genetics; Cells; Cultured; Extracellular Matrix; Extracellular Matrix: immunology; Humans; Lymphoid Tissue; Lymphoid Tissue: cytology; Lymphoid Tissue: immunology; Lymphoma; Lymphoma: genetics; Lymphoma: immunology; Mice; Mutant Strains; NF-kappa B; NF-kappa B: immunology; Neutrophils; Neutrophils: immunology; Osteonectin; Osteonectin: genetics; Osteonectin: immunologyMice Mutant StrainsCD5Neutrophils: immunologyOsteonectin: immunologyMARGINAL ZONELymphoma SPARC autoimmunityCD5
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EP-1129: Radiotherapy for mucosa-associated lymphoid tissue lymphoma of the ocular adnexa

2013

Radiation therapyPathologymedicine.medical_specialtyOncologybusiness.industryRadiology Nuclear Medicine and imagingMucosa-Associated Lymphoid Tissue Lymphomamedicine.medical_treatmentOcular adnexamedicineRadiology Nuclear Medicine and imagingHematologybusinessRadiotherapy and Oncology
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Peripheral T-cell lymphoma classification: the matter of cellular derivation.

2011

Peripheral T-cell lymphomas (PTCLs) represent approximately 12% of all non-Hodgkin's lymphomas in Western countries. They are quite heterogeneous as far as morphology and phenotype are concerned. Furthermore, until now, PTCLs could not be referred to specific normal counterparts, in contrast to B-cell-derived non-Hodgkin's lymphomas. In particular, in the last edition of the WHO classification of Tumors of the Hematopoietic and Lymphoid Tissues, for the majority of nodal PTCLs (including the not otherwise specified type and anaplastic large-cell lymphoma), the postulated cell of origin remained undefined. However, in the last few years, high-throughput genomic techniques, especially gene-ex…

T cellGene Expression ProfilingNot Otherwise SpecifiedT lymphocytesLymphoma T-Cell PeripheralTfhHematologyBiologymedicine.diseasePhenotypePeripheral T-cell lymphomaLymphomaGene expression profilingcytotoxicgene-expression profilemedicine.anatomical_structureImmunologymedicineCancer researchCytotoxic T cellHumansProspective Studiesperipheral T-cell lymphomaTumors of the hematopoietic and lymphoid tissuesExpert review of hematology
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IFI16 expression is related to selected transcription factors during B-cell differentiation

2015

The interferon-inducible DNA sensor IFI16 is involved in the modulation of cellular survival, proliferation, and differentiation. In the hematopoietic system, IFI16 is consistently expressed in the CD34+ stem cells and in peripheral blood lymphocytes; however, little is known regarding its regulation during maturation of B- and T-cells. We explored the role of IFI16 in normal B-cell subsets by analysing its expression and relationship with the major transcription factors involved in germinal center (GC) development and plasma-cell (PC) maturation.IFI16mRNA was differentially expressed in B-cell subsets with significant decrease inIFI16mRNA in GC and PCs with respect to naïve and memory subs…

lcsh:Immunologic diseases. AllergyAdultMaleXBP1Article SubjectLymphoid TissueTranscription FactorCellular differentiationPlasma CellsImmunologyB-Lymphocyte SubsetsBiologySettore MED/08 - Anatomia PatologicaAdult; B-Lymphocyte Subsets; B-Lymphocytes; Enzyme Activation; Female; Gene Expression Profiling; Germinal Center; Humans; Lymphoid Tissue; Male; NF-kappa B; Nuclear Proteins; Phosphoproteins; Plasma Cells; RNA Messenger; Transcription Factors; Cell Differentiation; Gene Expression Regulation; Immunology; Immunology and AllergyGene expressionImmunology; Immunology and AllergyHumansImmunology and AllergyRNA MessengerTranscription factorB-Lymphocyte SubsetsNuclear ProteinRegulation of gene expressionB-Lymphocyte SubsetB-LymphocytesRELBGene Expression ProfilingB-LymphocyteNF-kappa BNuclear ProteinsCell DifferentiationGeneral MedicineB-Cell DifferentiationPhosphoproteinsGerminal CenterMolecular biologyGene expression profilingEnzyme ActivationGene Expression RegulationPhosphoproteinImmunology interferon-inducible DNA sensor IFI16 B-Cell DifferentiationPlasma Cellinterferon-inducible DNA sensor IFI16Femalelcsh:RC581-607Transcription FactorsResearch ArticleHuman
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Survival of patients with gastric lymphoma in Germany and in the United States

2015

Background and Aim This study aims to examine survival for gastric lymphomas and its main subtypes, mucosa-associated lymphoid tissue lymphoma (MALT), and diffuse large B-cell lymphoma (DLBCL), in Germany and in the United States. Methods Data for patients diagnosed in 1997–2010 were used from 10 population-based German cancer registries and compared to the data from the US Surveillance, Epidemiology and End Results (SEER) 13 registries database. Patients age 15–74 diagnosed with gastric lymphomas were included in the analysis. Period analysis and modeled period analysis were used to estimate 5-year and 10-year relative survival (RS) in 2002–2010 and survival trends from 2002–2004 to 2008–2…

medicine.medical_specialtyeducation.field_of_studyHepatologyRelative survivalbusiness.industryGastric lymphomaPopulationGastroenterologymedicine.diseaseGastroenterologySurgeryCancer registryLymphomaimmune system diseaseshemic and lymphatic diseasesInternal medicineMedicinebusinesseducationMucosa-associated lymphoid tissueDiffuse large B-cell lymphomaSurvival rateJournal of Gastroenterology and Hepatology
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