Search results for "Active oxygen"

showing 10 items of 884 documents

SARS CoV2 infection _The longevity study perspectives

2021

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MaleAgingssRNA single-stranded RNARFLP restriction fragment length polymorphismHSPs heat shock proteinsReviewPTMs post-translational modificationsSevere Acute Respiratory SyndromeBiochemistryHIV-1 human immunodeficiency virus-1TNF-α tumor necrosis factor-αEC endothelial cells0302 clinical medicineFluAV influenza A virusI insertionMedicineIFN-γ interferon-γDIC disseminated intravascular coagulationPCR Polymerase Chain Reactionmedia_commonAged 80 and overLongevityRBD receptor-binding domainNeurologyLongevity modelMI myocardial infarctionNK natural killerhPIV2 human parainfluenza virus type 2media_common.quotation_subjectResearching genetic basis of resistance and potential pharmacological targetsLongevityDBP diastolic blood pressureNF-Kb nuclear transcription factor kBRANTES regulated upon activation normal T cell expressed and secretedMphi human macrophages03 medical and health sciencesCox 2 cyclooxygenase 2ORF open reading framePT prothrombin timeSettore MED/05 - Patologia ClinicaHumansMolecular BiologyInflammatory genesARDS acute respiratory distress syndromeNO nitric oxideD deletionCpGIs CpG islandsT2DM type 2 diabetes mellitusmedicine.diseaseFDP fibrin degradation products030104 developmental biologySARS CoV2 severe acute respiratory syndrome Coronavirus 2 virusImmunologyBMI body max indexItalian nonagenarians/centenariansRSV respiratory syncytial virusComplication030217 neurology & neurosurgeryMAPK mitogen-activated protein kinaseIP-10 IFN-γ -Inducible Protein 1040301 basic medicineAT1R activity of angiotensin 1 receptorsDCs dentritic cellsSSCP single strand conformation polymorphismACE/DD polymorphism of the angiotensin converting enzymeFGF21 fibroblast growth factor 21TLR4 toll-like receptor 4NAD nicotinamide adenine dinucleotideACE angiotensin-I converting enzymeAT2R activity of angiotensin 2 receptorsCOVID-19 Coronavirus disease 2019Respiratory distressACE2 angiotensin converting enzyme 2MKP-1 mitogen-activated protein kinase phosphatase-1 ()PD protease domainSNP single nucleotide polymorphismEH essential hypertensionTNFR tumor necrosis factor receptorINR international normalized ratio of the prothrombin timePAI-1 plasminogen activator inhibitor-1Ang angiotensinLPS lipopolysaccharideMCP1 monocyte chemoattractant protein-1medicine.symptomaPTT partial thromboplastin timeBiotechnologyDUSP1 dual specificity phosphatase 1Coronavirus disease 2019 (COVID-19)PC prostate cancerRAS renin-angiotensin aldosterone systemCCR5Δ32 genetic variant of chemokine receptorCOVID-19 Researching genetic basis of resistance and potential pharmacological targets Italian nonagenarians/centenarians Longevity modelAsymptomaticSARS-1 severe acute respiratory syndrome virus 1SIRT-1 Sirtuin 1Th1 t-helper lymphocyte type 1Immune systemROS reactive oxygen speciesTGF-β transforming growth factor betaET-1 endothelin-1ComputingMethodologies_COMPUTERGRAPHICSADAM-17 metallopeptidase domain 17business.industrySARS-CoV-2SBP systolic blood pressureCOVID-19HDACs histone deacetylasesComorbidityImmune Systembusiness5-LO lipoxygenase 5Ageing Research Reviews
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Effect of gender on mitochondrial toxicity of Alzheimer's Abeta peptide.

2007

The aim of this article is to review the role of mitochondria in the pathogenesis of Alzheimer's disease. Additionally, the effect of gender on the incidence of Alzheimer's disease and the pathophysiological mechanisms involved will be discussed. Mitochondria, in the presence of Alzheimer's amyloid-beta peptide, increase the formation of reactive oxygen species which act both as damaging agents and also as signaling molecules. These radicals, in fact, unleash a mechanism involving the liberation of cytochrome c that leads to neuronal apoptosis. Notably, young females appear protected against the mitochondrial toxicity of amyloid-beta, likely due to the upregulation of antioxidant enzymes wh…

MaleAntioxidantPhysiologymedicine.medical_treatmentClinical BiochemistryPharmacologyMitochondrionBiologymedicine.disease_causeBiochemistryp38 Mitogen-Activated Protein Kinaseschemistry.chemical_compoundDownregulation and upregulationAlzheimer DiseasemedicineHumansMolecular BiologyGeneral Environmental Sciencechemistry.chemical_classificationReactive oxygen speciesAmyloid beta-PeptidesEstrogensCell Biologymedicine.diseaseOxidantsMitochondriaEnzyme ActivationMitochondrial toxicitychemistryBiochemistryToxicityGeneral Earth and Planetary SciencesPhytoestrogensFemaleOxidative stressAntioxidantsredox signaling
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The nutrigenetic influence of the interaction between dietary vitamin E and TXN and COMT gene polymorphisms on waist circumference: a case control st…

2015

Background Abdominal obesity (AO) is a common modifiable risk factor for certain non-communicable diseases associated with enhanced oxidative stress (OS). The objective of this work was to investigate whether the interaction between antioxidant vitamin intake and OS-related polymorphisms modulates gene-associated anthropometry in a Spanish population. Methods A total of 246 subjects with AO, and 492 age and gender matched non-AO subjects were included in the study. Anthropometric, biochemical, and OS parameters, and antioxidant dietary intake data were assessed using validated procedures. DNA from white blood cells was isolated and the genotype of seven polymorphisms from genes involved in …

MaleAntioxidantPolimorphismmedicine.medical_treatment:Chemicals and Drugs::Amino Acids Peptides and Proteins::Proteins::Thioredoxins [Medical Subject Headings]Antioxidantes:Analytical Diagnostic and Therapeutic Techniques and Equipment::Investigative Techniques::Epidemiologic Methods::Statistics as Topic::Probability::Risk::Risk Factors [Medical Subject Headings]AntioxidantsVitamin E intakeObesidad abdominalchemistry.chemical_compoundNutrigenomicsThioredoxinsPolymorphism (computer science):Anatomy::Cells::Blood Cells::Leukocytes [Medical Subject Headings]Risk FactorsGenotypeVitamin E:Chemicals and Drugs::Nucleic Acids Nucleotides and Nucleosides::Nucleosides::Deoxyribonucleosides::Deoxyguanosine [Medical Subject Headings]:Chemicals and Drugs::Chemical Actions and Uses::Pharmacologic Actions::Physiological Effects of Drugs::Growth Substances::Micronutrients::Vitamins [Medical Subject Headings]:Phenomena and Processes::Metabolic Phenomena::Metabolism::Oxidative Stress [Medical Subject Headings]Abdominal obesityNutrigenómicaMedicine(all)AnthropometryAge FactorsGeneral MedicineAbdominal obesity:Phenomena and Processes::Physiological Phenomena::Body Constitution::Body Weights and Measures::Body Size::Body Weight::Overweight::Obesity::Obesity Abdominal [Medical Subject Headings]Middle Aged:Analytical Diagnostic and Therapeutic Techniques and Equipment::Investigative Techniques::Epidemiologic Methods::Statistics as Topic::Models Statistical::Logistic Models [Medical Subject Headings]Waist circumferenceDietaFemale:Phenomena and Processes::Genetic Phenomena::Genotype [Medical Subject Headings]medicine.symptomFactores de riesgoVitaminAdultmedicine.medical_specialtyGenotypeVitamina ECatechol-O-methyltransferaseBiology:Phenomena and Processes::Physiological Phenomena::Nutritional Physiological Phenomena::Diet [Medical Subject Headings]:Phenomena and Processes::Genetic Phenomena::Genetic Structures::Genome::Genome Components::Genes::Genes Reporter [Medical Subject Headings]Catechol O-Methyltransferase:Chemicals and Drugs::Biological Factors::Pigments Biological::Carotenoids::Retinoids::Vitamin A [Medical Subject Headings]Polymorphism Single NucleotideGeneral Biochemistry Genetics and Molecular BiologySex FactorsInternal medicine:Chemicals and Drugs::Inorganic Chemicals::Oxygen Compounds::Reactive Oxygen Species [Medical Subject Headings]:Chemicals and Drugs::Chemical Actions and Uses::Pharmacologic Actions::Physiological Effects of Drugs::Protective Agents::Antioxidants [Medical Subject Headings]medicinePerímetro abdominal:Phenomena and Processes::Physiological Phenomena::Body Constitution::Body Weights and Measures::Body Size::Waist Circumference [Medical Subject Headings]:Chemicals and Drugs::Heterocyclic Compounds::Heterocyclic Compounds 2-Ring::Benzopyrans::Vitamin E [Medical Subject Headings]HumansObesityPolymorphismThioredoxinAgedCatechol-O-methyl transferaseBiochemistry Genetics and Molecular Biology(all)Vitamin EResearchCase-control studyGenes informadores:Disciplines and Occupations::Natural Science Disciplines::Biological Science Disciplines::Biology::Genetics::Genomics::Nutrigenomics [Medical Subject Headings]DietOxidative StressEndocrinologychemistrySpainOxidative stressCase-Control Studies:Chemicals and Drugs::Enzymes and Coenzymes::Enzymes::Transferases::One-Carbon Group Transferases::Methyltransferases::Catechol O-Methyltransferase [Medical Subject Headings]:Chemicals and Drugs::Nucleic Acids Nucleotides and Nucleosides::Nucleic Acids::DNA [Medical Subject Headings]Genotipo
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Cellular damage to human hepatocytes through repeated application of 5-aminolevulinic acid.

2003

Abstract Background/Aims : 5-Aminolevulinic acid (ALA), a precursor of porphyrins is used for photodynamic diagnosis and therapy within topical or systemic applications. A potential toxic effect on the human liver is of major interest and therefore we investigated the impact of a repeated application of ALA without illumination on cultures of human hepatocytes. Methods : After ALA treatment of hepatocytes in vitro the porphyrin synthesis, albumin secretion, liver-specific enzyme release, and malondialdehyde levels were determined. In order to reduce levels of reactive oxygen substances, mannitol and the antioxidant enzymes superoxide dismutase and catalase were supplemented. Results : Porph…

MaleAntioxidantPorphyrinsCell Survivalmedicine.medical_treatmentIn Vitro TechniquesAntioxidantsLipid peroxidationSuperoxide dismutasechemistry.chemical_compoundmedicineHumansCells Culturedchemistry.chemical_classificationPhotosensitizing AgentsHepatologyProtoporphyrin IXbiologyDose-Response Relationship DrugSuperoxide DismutaseAlbuminAminolevulinic AcidMalondialdehydeEnzymeBiochemistrychemistryCatalasebiology.proteinHepatocytesLipid PeroxidationReactive Oxygen SpeciesJournal of hepatology
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Oxidative stress in patients with Alzheimer's disease: Effect of extracts of fermented papaya powder

2015

Brain tissue is particularly susceptible to oxidative stress (OS). Increased production of reactive oxygen species (ROS), reduced antioxidant systems, and decreased efficiency in repairing mechanisms have been linked to Alzheimer’s disease (AD). Postmortem studies in AD patients’ brains have shown oxidative damage markers (i.e., lipid peroxidation, protein oxidative damage, and glycoxidation). Fermented papaya (FPP, a product ofCarica papaya Linnfermentation with yeast) is a nutraceutical supplement with favorable effects on immunological, hematological, inflammatory, and OS parameters in chronic/degenerative diseases. We studied 40 patients (age 78.2 ± 1.1 years), 28 AD patients, and 12 co…

MaleAntioxidantSettore MED/09 - Medicina Internamedicine.medical_treatmentReview Articlemedicine.disease_causeAntioxidantsLipid peroxidationchemistry.chemical_compoundchemistry.chemical_classificationAged 80 and overbiologyCaricaBrainBiochemistry8-Hydroxy-2'-DeoxyguanosineFemalePowdersCaricaAlzheimer's diseaseAntioxidantCase-Control StudieReactive Oxygen SpecieOxidation-Reductionlcsh:RB1-214Humanmedicine.medical_specialtyUrinary systemImmunologyPowderAlzheimer DiseaseInternal medicinemedicinelcsh:PathologyHumansAgedDietary SupplementReactive oxygen speciesCase-control studyDeoxyguanosineOxidative StrePlant PreparationCell Biologybiology.organism_classificationmedicine.diseaseAged; Aged 80 and over; Alzheimer Disease; Antioxidants; Brain; Carica; Case-Control Studies; Deoxyguanosine; Dietary Supplements; Female; Fermentation; Humans; Lipid Peroxidation; Male; Oxidation-Reduction; Oxygen; Plant Preparations; Powders; Reactive Oxygen Species; Oxidative Stress; Immunology; Cell BiologyOxygenOxidative StressEndocrinologychemistryCase-Control StudiesDietary SupplementsFermentationPlant PreparationsLipid PeroxidationReactive Oxygen SpeciesOxidative stress
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Anti-hypertensive effects of Rosuvastatin are associated with decreased inflammation and oxidative stress markers in hypertensive rats

2009

International audience; Among their pleiotropic effects, statins exert antioxidant and anti-inflammatory properties. The aim of this study was to evaluate in normotensive (WKY) and in spontaneously hypertensive rats (SHR) the effect of rosuvastatin (ROSU) treatment on (1) plasma inflammation markers and endogenous NO synthase inhibitor (ADMA) levels, (2) reactive oxygen species (ROS) generated by circulating leukocytes and (3) vascular oxidative stress and tissue inflammation markers. Plasma cytokines were higher in SHR than in WKY, except for IL-4, which was lower in SHR than in WKY. SHR monocytes exhibited higher production of ROS than did WKY monocytes. In the experimental conditions, RO…

MaleAntioxidantmedicine.medical_treatmentBlood Pressure030204 cardiovascular system & hematologymedicine.disease_causeBiochemistryRats Inbred WKYchemistry.chemical_compound0302 clinical medicineRats Inbred SHR[SDV.IDA]Life Sciences [q-bio]/Food engineeringRosuvastatin CalciumComputingMilieux_MISCELLANEOUSchemistry.chemical_classification0303 health sciencesSulfonamidesGeneral Medicine3. Good healthNAD(P)H oxidasecardiovascular systemmedicine.symptommedicine.drugmedicine.medical_specialtyhypertensionleukocytesInflammationArgininestatins03 medical and health sciences[SDV.MHEP.CSC]Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular systemInternal medicinemedicineAnimalsRosuvastatin[SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineeringcardiovascular diseasesAntihypertensive Agents030304 developmental biologyInflammationReactive oxygen speciesCholesterolNAD(P)H oxidaseNADPH OxidasescytokinesRatsFluorobenzenesOxidative StressEndocrinologyBlood pressurePyrimidineschemistryInterleukin-4Hydroxymethylglutaryl-CoA Reductase InhibitorsReactive Oxygen SpeciesOxidative stress
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Limiting immunopathology: Interaction between carotenoids and enzymatic antioxidant defences.

2015

The release of reactive oxygen and nitrogen species (ROS and RNS) during the inflammatory response generates damages to host tissues, referred to as immunopathology, and is an important factor in ecological immunology. The integrated antioxidant system, comprising endogenous antioxidant enzymes (e.g. superoxide dismutase SOD, and catalase CAT) and dietary antioxidants (e.g. carotenoids), helps to cope with immune-mediated oxidative stress. Crustaceans store large amounts of dietary carotenoids for yet unclear reasons. While being immunostimulants and antioxidants, the interaction of these pigments with antioxidant enzymes remains unclear. Here, we tested the interaction between dietary supp…

MaleAntioxidantmedicine.medical_treatmentImmunologyCrustaceanImmunopathologyEcological immunologyImmuno-stimulantsmedicine.disease_causeAntioxidantsSuperoxide dismutase03 medical and health sciencesImmune systemImmunityHemolymphmedicine[ SDV.IMM ] Life Sciences [q-bio]/ImmunologyAnimalsAmphipodaCarotenoidComputingMilieux_MISCELLANEOUS030304 developmental biologychemistry.chemical_classificationInflammation0303 health sciences[ SDE.BE ] Environmental Sciences/Biodiversity and EcologybiologySuperoxide Dismutase04 agricultural and veterinary sciencesCatalaseCarotenoidsReactive Nitrogen SpeciesOxidative StressEnzymechemistryBiochemistryCatalaseDietary Supplements040102 fisheriesbiology.protein0401 agriculture forestry and fisheries[SDV.IMM]Life Sciences [q-bio]/Immunology[SDE.BE]Environmental Sciences/Biodiversity and EcologyAntioxidantReactive Oxygen SpeciesOxidative stressDevelopmental BiologyDevelopmental and comparative immunology
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Janus -faced liposomes enhance antimicrobial innate immune response in Mycobacterium tuberculosis infection

2012

We have generated unique asymmetric liposomes with phosphatidylserine (PS) distributed at the outer membrane surface to resemble apoptotic bodies and phosphatidic acid (PA) at the inner layer as a strategy to enhance innate antimycobacterial activity in phagocytes while limiting the inflammatory response. Results show that these apoptotic body-like liposomes carrying PA (ABL/PA) ( i ) are more efficiently internalized by human macrophages than by nonprofessional phagocytes, ( ii ) induce cytosolic Ca 2+ influx, ( iii ) promote Ca 2+ -dependent maturation of phagolysosomes containing Mycobacterium tuberculosis (MTB), ( iv ) induce Ca 2+ -dependent reactive oxygen species (ROS) production, (…

MaleAntitubercular AgentsApoptosisSettore MED/07Mice0302 clinical medicineInnateInbred BALB CMycobacterium tuberculosis liposomes0303 health sciencesMice Inbred BALB CMultidisciplinaryLeukemiaTumorbiologyMacrophages; Leukemia Monocytic Acute; Animals; Apoptosis; Calcium; Humans; Disease Models Animal; Mice; Cell Line Tumor; Immunity Innate; Reactive Oxygen Species; Mice Inbred BALB C; Liposomes; Phosphatidylserines; Tuberculosis Pulmonary; Adult; Bronchoalveolar Lavage Fluid; Middle Aged; Antitubercular Agents; Phagocytosis; Male; Mycobacterium tuberculosis; IsoniazidInterleukinPulmonaryMiddle AgedSettore BIO/193. Good healthPNAS PlusLeukemia Monocytic AcuteTumor necrosis factor alphaBronchoalveolar Lavage FluidIntracellularAdultPhagocytosisPhosphatidylserinesAcutePhagolysosomeSettore MED/07 - MICROBIOLOGIA E MICROBIOLOGIA CLINICAMicrobiologyCell LineMycobacterium tuberculosis03 medical and health sciencesPhagocytosisCell Line TumorIsoniazidTuberculosisAnimalsHumansTuberculosis Pulmonary030304 developmental biologySettore MED/04 - Patologia GeneraletherapyInnate immune systemMonocyticAnimalMacrophagesImmunityMycobacterium tuberculosisbiology.organism_classificationImmunity InnateDisease Models AnimalApoptosisImmunologyDisease ModelsLiposomesCalciumReactive Oxygen Species030215 immunology
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Oxidative and Nitrosative Pattern in Circulating Leukocytes of Very Early/Early Hepatocellular Carcinoma Patients

2020

Background/aim In chronic liver disease, various immune cell subsets exert pro or anti-tumour effects by releasing reactive oxygen and nitrogen species (ROS, RNS). Here, we evaluated the oxidative and nitrosative pattern in peripheral blood leukocyte subpopulations of early hepatocellular carcinoma (HCC) patients compared with HCC-free cirrhotic patients. Materials and methods Venous blood samples from 18 HCC-free cirrhotic patients and 17 early stage HCC patients were collected to determine ROS, RNS and reduced glutathione levels in isolated leukocytes analyzed by flow cytometry. Results Intracellular levels of ROS and glutathione were higher in lymphocytes, monocytes, and neutrophils from…

MaleCancer ResearchCarcinoma HepatocellularCirrhosisChronic liver diseasemedicine.disease_causeNitric oxide03 medical and health scienceschemistry.chemical_compound0302 clinical medicineImmune systemRisk FactorsSuperoxidesLeukocytesmedicineHumansEarly Hepatocellular CarcinomaAgedNeoplasm StagingAged 80 and overbusiness.industryLiver NeoplasmsGeneral MedicineGlutathioneMiddle AgedFlow CytometryNeoplastic Cells Circulatingmedicine.diseaseReactive Nitrogen Speciesdigestive system diseasesOxidative StressOncologychemistry030220 oncology & carcinogenesisImmunologyFemaleReactive Oxygen SpeciesbusinessOxidation-ReductionOxidative stressIntracellularAnticancer Research
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Tea catechins induce crosstalk between signaling pathways and stabilize mast cells in ulcerative colitis

2017

It is well documented that nutraceuticals, in general, and Green tea catechins, in particular, possess a potential therapeutic value in inflammatory bowel diseases (IBD) due to their anti-oxidative and anti-inflammatory effects. This study aimed to investigate the possible mechanism of action of catechins in a rat model of colitis induced by 2.4.6 trinitrobenzene sulfonic acid (TNBS). Thirty-five young adult Sprague-Dawley rats were divided into four groups: normal control (n=5), catechins (n=9), TNBS (n=9) and TNBS plus catechins (n=12) treated. Catechin in the form of Epigallocatechin-3-gallate (EGCG) was administered daily by intraperitoneal injection, 1 week before the induction date of…

MaleCancer ResearchColonPhysiologyEndocrinology Diabetes and MetabolismImmunologyAnti-Inflammatory AgentsAntioxidantsCatechinRats Sprague-DawleyEndocrinologyPhysiology (medical)AnimalsImmunology and AllergyMast CellsTeaInterleukin-6Tumor Necrosis Factor-alphaNF-kappa BColitisRatsGene Expression RegulationTrinitrobenzenesulfonic AcidOncologyReactive Oxygen SpeciesSignal Transduction
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