Search results for "Matrix Metalloproteinase"

showing 10 items of 212 documents

High mobility group box 1 potentiates the pro-inflammatory effects of interleukin-1β in osteoarthritic synoviocytes

2010

Introduction High mobility group box 1 (HMGB1) is released by necrotic cells or secreted in response to inflammatory stimuli. Extracellular HMGB1 may act as a pro-inflammatory cytokine in rheumatoid arthritis. We have recently reported that HMGB1 is released by osteoarthritic synoviocytes after activation with interleukin-1beta (IL-1β) The present study investigated the role of HMGB1 in synovial inflammation in osteoarthritis (OA). Methods HMGB1 was determined in human synovium using immunohistochemistry, comparing normal to OA. OA synoviocytes were incubated with HMGB1 at 15 or 25 ng/ml in the absence or presence of IL-1β (10 ng/ml). Gene expression was analyzed by quantitative PCR and pro…

MaleChemokineMAP Kinase Signaling Systemmedicine.medical_treatmentInterleukin-1betaImmunologyInflammationchemical and pharmacologic phenomenaCCL2HMGB1p38 Mitogen-Activated Protein KinasesRheumatologySynovitisMatrix Metalloproteinase 13HumansMedicineImmunology and AllergyRNA MessengerHMGB1 ProteinExtracellular Signal-Regulated MAP KinasesCells CulturedAgedbiologybusiness.industrySynovial MembraneNF-kappa BOsteoarthritis Kneemedicine.diseaseImmunohistochemistryMolecular biologyCCL20Cytokinemedicine.anatomical_structurebiology.proteinFemaleMatrix Metalloproteinase 3Matrix Metalloproteinase 1Synovial membranemedicine.symptombusinessProto-Oncogene Proteins c-aktResearch ArticleArthritis Research & Therapy
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Cordycepin protects against cerebral ischemia/reperfusion injury in vivo and in vitro.

2011

Cordycepin, (3'-deoxyadenosine), a bioactive compound of Cordyceps militaris, has been shown to exhibit many pharmacological actions, such as anti-inflammatory, antioxidative and anticancer activities. Little is known about the neuroprotective action of cordycepin as well as its molecular mechanisms. In this study, cordycepin was investigated for its neuroprotective potential in mice with ischemia following 15 min of the bilateral common carotid artery occlusion and 4h of reperfusion. The effect of cordycepin was also studied in mice brain slices treated with oxygen-glucose deprivation (OGD) injury. Our results showed that cordycepin was able to prevent postischemic neuronal degeneration an…

MaleExcitatory Amino AcidsIschemiaCell CountPharmacologyNeuroprotectionHippocampusBrain IschemiaSuperoxide dismutaseBrain ischemiachemistry.chemical_compoundMiceIn vivoMalondialdehydemedicineAnimalsPharmacologyNeuronsbiologyCordycepinDeoxyadenosinesbusiness.industrySuperoxide DismutaseGlutamate receptormedicine.diseaseOxygenGlucoseBiochemistrychemistryReperfusion Injurybiology.proteinMatrix Metalloproteinase 3businessReperfusion injuryPropidiumEuropean journal of pharmacology
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Heterogeneous activation of MMP-9 due to prostate cancer-bone interaction.

2007

OBJECTIVES To determine whether matrix metalloproteinase (MMP)-9 activation resulting from prostate cancer cell-bone interaction is dependent on the tumor cell type and/or the nature of the bone microenvironment. METHODS In vitro co-cultures of human prostate cancer cells (PC3 and C4-2B) and mouse, human fetal, or human adult tissues were performed. In vivo the tumor cells were intratibially injected in SCID mice or intraosseously inoculated into fetal or adult bone xenografts in SCID mice. MMP-2 and MMP-9 expression and activation were determined by gelatin zymography in conditioned media obtained in vitro and in lysates derived from the in vivo studies at different time points. RESULTS Ac…

MaleFetusPathologymedicine.medical_specialtybusiness.industryUrologyBone metastasisProstatic NeoplasmsMice SCIDMatrix metalloproteinaseBone tissuemedicine.diseaseIn vitroBone and BonesProstate cancerMicemedicine.anatomical_structureMatrix Metalloproteinase 9In vivoCancer cellMedicineAnimalsHumansbusinessCells CulturedUrology
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Gelatinases and their tissue inhibitors in a group of subjects with metabolic syndrome.

2013

Aim To evaluate matrix metalloproteases (MMP)-2 and MMP-9 and tissue inhibitor of metalloproteases (TIMP)-1 and TIMP-2 in a group of subjects with metabolic syndrome (MS) subdivided according to the presence or absence of diabetes mellitus. Methods We examined in 90 subjects (51 men and 39 women) with MS, defined following the International Diabetes Federation criteria, and subsequently subdivided into diabetic subjects (22 men and 11 women) and nondiabetic subjects s (29 men and 28 women), the plasma concentrations of MMP-2 and MMP-9 and of TIMP-1 and TIMP-2 using specific enzyme-linked immunosorbent assay kits. Results We found a significant increase in plasma concentrations of MMP-2, MMP…

MaleGelatinasesmedicine.medical_specialtyMatrix metalloproteinase insulin resistanceMatrix metalloproteinaseBiologyMatrix Metalloproteinase InhibitorsGeneral Biochemistry Genetics and Molecular BiologyDiabetes mellitusInternal medicinemedicineMatrix metalloproteasesHumansInternational diabetes federationMetabolic SyndromeMetalloproteinaseTissue Inhibitor of Metalloproteinase-2Tissue Inhibitor of Metalloproteinase-1General MedicineMiddle Agedmedicine.diseaseEndocrinologyMatrix Metalloproteinase 9GelatinasesPlasma concentrationMatrix Metalloproteinase 2FemaleMetabolic syndromeBiomarkersJournal of investigative medicine : the official publication of the American Federation for Clinical Research
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Non-invasive markers of airway inflammation and remodeling in childhood asthma

2009

To evaluate the relationship between pro-inflammatory and pro-remodeling mediators and severity and control of asthma in children, the levels of IL-8, MMP-9, TIMP-1 in induced sputum supernatants, the number of sputum eosinophils, as well as FeNO, were investigated in 35 asthmatic children, 12 with intermittent (IA) and 23 with moderate asthma (MA), and 9 controls (C). The patients with asthma were followed for 1 yr and sputum was obtained twice during the follow-up. Biomarker levels were correlated with the number of exacerbations. We found that IL-8, MMP-9, TIMP-1 and the numbers of eosinophils in induced sputum, as well as FeNO, were increased in children with IA and MA in comparison to …

MaleHumans; Disease Progression; Asthma; Child; Leukocyte Count; Eosinophils; Bronchitis; Follow-Up Studies; Sputum; Interleukin-8; Adolescent; Tissue Inhibitor of Metalloproteinase-1; Matrix Metalloproteinase 9; Biological Markers; Female; MaleAdolescentImmunologyInflammationDiseaseEosinophilBronchitiFollow-Up StudieLeukocyte CountImmunology and AllergyMedicineHumansNONINVASIVE MARKERS INFLAMMATION REMODELING CHILDHOOD ASTHMAProspective cohort studyBronchitisChildAsthmaChildhood asthmaTissue Inhibitor of Metalloproteinase-1business.industryInterleukin-8Airway inflammationSputumrespiratory systemmedicine.diseaseAsthmarespiratory tract diseasesEosinophilsMatrix Metalloproteinase 9Pediatrics Perinatology and Child HealthImmunologyBiological MarkerDisease ProgressionSputumBiomarker (medicine)Femalemedicine.symptombusinessBiomarkersHumanFollow-Up Studies
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The Carbon Monoxide-Releasing Molecule Tricarbonyldichlororuthenium(II) Dimer Protects Human Osteoarthritic Chondrocytes and Cartilage from the Catab…

2008

We have investigated the effects of a carbon monoxide-releasing molecule, tricarbonyldichlororuthenium(II) dimer (CORM-2), on catabolic processes in human osteoarthritis (OA) cartilage and chondrocytes activated with interleukin-1beta. In these cells, proinflammatory cytokines induce the synthesis of matrix metalloproteinases (MMPs) and aggrecanases, including members of a disintegrin and metalloproteinase with thrombospondin domain (ADAMTS) family, which may contribute to cartilage loss. CORM-2 down-regulated MMP-1, MMP-3, MMP-10, MMP-13, and ADAMTS-5 in OA chondrocytes, and it inhibited cartilage degradation. These effects were accompanied by increased aggrecan synthesis and collagen II e…

MaleInterleukin-1betaDown-RegulationMatrix metalloproteinaseProtective AgentsProinflammatory cytokineExtracellular matrixChondrocytesOsteoarthritisOrganometallic CompoundsmedicineExtracellularHumansAggrecansCollagen Type IIAggrecanAgedPharmacologyCarbon MonoxideThrombospondinChemistryCartilageADAMTSMatrix MetalloproteinasesCell biologyCartilagemedicine.anatomical_structureBiochemistryMolecular MedicineFemaleJournal of Pharmacology and Experimental Therapeutics
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Mast cell targeting hampers prostate adenocarcinoma development but promotes the occurrence of highly malignant neuroendocrine cancers

2011

Abstract Mast cells (MC) are c-Kit–expressing cells, best known for their primary involvement in allergic reactions, but recently reappraised as important players in either cancer promotion or inhibition. Here, we assessed the role of MCs in prostate tumor development. In prostate tumors from both tumor-prone transgenic adenocarcinoma of the mouse prostate (TRAMP) mice and human patients, MCs are specifically enriched and degranulated in areas of well-differentiated (WD) adenocarcinoma but not around poorly differentiated (PD) foci that coexist in the same tumors. We derived novel TRAMP tumor cell lines, representative of WD and PD variants, and through pharmacologic stabilization or geneti…

MaleOncologyCancer Researchmedicine.medical_specialtyEpithelial-Mesenchymal TransitionMice TransgenicAdenocarcinomaBiologymedicine.disease_causeCell DegranulationMiceProstate cancerProstateCell Line TumorInternal medicineTumor MicroenvironmentmedicineMast CellAnimalsHumansMast CellsReceptors Tumor Necrosis Factor Member 25Tumor microenvironmentAdenocarcinoma; Animals; Carcinoma Neuroendocrine; Cell Degranulation; Cell Line Tumor; Disease Progression; Epithelial-Mesenchymal Transition; Humans; Male; Mast Cells; Matrix Metalloproteinase 9; Mice; Mice Inbred C57BL; Mice Transgenic; Prostatic Neoplasms; Proto-Oncogene Proteins c-kit; Receptors Tumor Necrosis Factor Member 25; Tumor Microenvironment; Cancer Research; OncologyAnimalProstatic NeoplasmsCancermedicine.diseasehumanitiesCarcinoma NeuroendocrineMice Inbred C57BLProto-Oncogene Proteins c-kitmedicine.anatomical_structureMatrix Metalloproteinase 9OncologyTumor progressionProstatic NeoplasmDisease ProgressionAdenocarcinomaCarcinogenesisHumanTramp
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The effect of biological sealants and adhesive treatments on matrix metalloproteinase expression during renal injury healing

2017

Background Renal injuries are relatively common in cases of abdominal trauma. Adhesives and sealants can be used to repair and preserve damaged organs. Using a rat model, this study explores the activity of different matrix metalloproteinases (MMP) during the healing of renal injuries treated by two biological adhesives (TachoSil and GelitaSpon) and a new synthetic elastic cyanoacrylate (Adhflex). Methods Renal traumatic injuries were experimentally induced in 90 male Wistar rats by a Stiefel Biopsy Punch in the anterior aspect of the left kidney. Animals were divided into five groups: 1, sham non-injured (n = 3); 2, non-treated standard punch injury (n = 6); 3, punch injury treated with Ta…

MalePathologyCritical Care and Emergency MedicinePhysiology030232 urology & nephrologylcsh:MedicineMatrix metalloproteinasePathology and Laboratory MedicineKidneyMMP8Biochemistrylaw.invention0302 clinical medicinelawMedicine and Health Scienceslcsh:ScienceImmune ResponseTrauma MedicineKidneyMultidisciplinaryProteasesTachoSilEnzymesmedicine.anatomical_structureTraumatic injuryCyanoacrylate030220 oncology & carcinogenesisPhysical SciencesAnatomyTraumatic InjuryResearch Articlemedicine.medical_specialtyHistologyMaterials ScienceImmunologyFibrin Tissue Adhesive03 medical and health sciencesSigns and SymptomsDiagnostic MedicineAdhesivesTissue RepairmedicineAnimalsRats WistarMaterials by AttributeInflammationWound Healingbusiness.industrylcsh:RBiology and Life SciencesProteinsKidneysRenal Systemmedicine.diseaseMatrix MetalloproteinasesAbdominal traumaEnzymologyMetalloproteaseslcsh:QPhysiological ProcessesbusinessWound healingCollagensPLOS ONE
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Associations of rs3918242 and rs2285053 MMP-9 and MMP-2 polymorphisms with the risk, severity, and short- and long-term complications of degenerative…

2016

Abstract Background Degenerative forms of mitral valve diseases (MVDs) are very complex pathologies. Thus, it is difficult to make generalizations about the disease pathways or genetic risk factors contributing to these diseases. However, a key role of metalloproteinases (MMPs) in their pathophysiology is emerging. Thus, we performed for the first time a perspective study to assess eventual associations of some functional single nucleotide polymorphisms (SNPs) in MMP-2 and MMP-9 genes with the MVD risk, symptom severity, and short- and long-term (4.8 years) complications. Materials and methods For this purpose, 90 patients and two control groups were genotyped for rs3918242, rs243865, and r…

MalePathologyHeart Valve DiseasesDisease030204 cardiovascular system & hematologyMatrix metalloproteinasers3918242 rs243865 rs2285053 MMP-2 and MMP-9 gene SNPDegenerative forms of mitral valve diseases; Management and outcome; Metalloproteinases; rs3918242 rs243865 rs2285053 MMP-2 and MMP-9 gene SNPs; Aged; Cohort Studies; Female; Genetic Predisposition to Disease; Genotype; Heart Valve Diseases; Humans; Male; Matrix Metalloproteinase 2; Matrix Metalloproteinase 9; Middle Aged; Mitral Valve; Prospective Studies; Risk Factors; Polymorphism Single Nucleotide0403 veterinary scienceCohort Studies0302 clinical mediciners2285053 MMP-2 and MMP-9 gene SNPsRisk FactorsGenotypeManagement and outcomeNatriuretic peptideProspective StudiesProspective cohort studyMVDSMetalloproteinaseDegenerative forms of mitral valve diseases04 agricultural and veterinary sciencesGeneral MedicineSingle NucleotideMiddle AgedMetalloproteinasesPathophysiologyMatrix Metalloproteinase 9Matrix Metalloproteinase 2Mitral ValveFemalers3918242Cardiology and Cardiovascular MedicineDegenerative forms of mitral valve diseasemedicine.medical_specialtyGenotype040301 veterinary sciencesmedicine.drug_class2734Single-nucleotide polymorphismDegenerative forms of mitral valve diseases; Management and outcome; Metalloproteinases; rs3918242 rs243865 rs2285053 MMP-2 and MMP-9 gene SNPs; Cardiology and Cardiovascular Medicine; 2734Polymorphism Single NucleotidePathology and Forensic Medicine03 medical and health sciencesInternal medicinemedicineHumansGenetic Predisposition to Diseasers243865PolymorphismAgedbusiness.industrySettore MED/23 - Chirurgia Cardiacabusiness
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A polymorphism in the cyclooxygenase 2 gene as an inherited protective factor against myocardial infarction and stroke

2004

CONTEXT: Myocardial infarction (MI) and ischemic stroke are thought to be caused by matrix digestion by metalloproteinases (MMPs) leading to rupture of atherosclerotic plaques. Production of macrophage MMP-2 and MMP-9 is induced by cyclooxygenase 2 (COX-2) and prostaglandin E(2) synthesis. Although COX-2 expression may be genetically determined, the relation between COX-2 polymorphisms and the risk of MI and stroke is unclear. OBJECTIVE: To investigate the relationship between the -765G-->C polymorphism of the COX-2 gene and clinically evident plaque rupture. DESIGN, SETTING, AND PARTICIPANTS: Prospective, matched case-control study conducted between March 2002 and October 2003 among 864 pa…

MalePathologySettore MED/09 - Medicina InternaArteriosclerosisCarotid StenosiMyocardial InfarctionInfarctionProstacyclinGastroenterologyCohort StudiesCerebrovascular AccidentrteriosclerosiRisk FactorsGenotypeMedicineCarotid StenosisProspective StudiesMyocardial infarctionMembrane ProteinStrokebiologyGeneral MedicineMiddle AgedIsoenzymesStrokePhenotypeMatrix Metalloproteinase 9Matrix Metalloproteinase 2FemaleHumanmedicine.drugmedicine.medical_specialtyGenotypeArteriosclerosiInternal medicineDiabetes mellitusHumansPolymorphism Geneticbusiness.industryC-reactive proteinProstaglandin-Endoperoxide SynthaseMembrane Proteinsmedicine.diseaseEpoprostenolIsoenzymeProspective StudieAtheromaCyclooxygenase 2Prostaglandin-Endoperoxide Synthasesbiology.proteinCohort Studiebusiness
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