Search results for " hydrocarbon"

showing 10 items of 300 documents

Triclosan activates aryl hydrocarbon receptor (AhR)-dependent apoptosis and affects Cyp1a1 and Cyp1b1 expression in mouse neocortical neurons.

2016

Triclosan (TCS) is an antimicrobial agent that is used extensively in personal care and in sanitizing products, such as soaps, toothpastes, and hair products. A number of studies have revealed the presence of TCS in human tissues, such as fat, liver and brain, in addition to blood and breast milk. The aim of the present study was to investigate the impact of TCS on AhR and Cyp1a1/Cyp1b1 signaling in mouse neocortical neurons in primary cultures. In addition to the use of selective ligands and siRNAs, expression levels of mRNA and proteins as well as caspase-3 activity, reactive oxygen species (ROS) formation, and lactate dehydrogenase (LDH) release have been measured. We also studied the in…

0301 basic medicinemedicine.medical_specialtySmall interfering RNAStimulationCaspase 3ApoptosisNeocortex010501 environmental sciencesBiology01 natural sciencesBiochemistry03 medical and health sciencesMiceInternal medicinemedicineCytochrome P-450 CYP1A1Cyp1a1AnimalsRNA MessengerCells Cultured0105 earth and related environmental sciencesGeneral Environmental Sciencechemistry.chemical_classificationNeuronsReactive oxygen speciesCaspase 3fungiAhRNeurotoxicityCyp1b1respiratory systemNeuronmedicine.diseaseAryl hydrocarbon receptorTriclosanCell biology030104 developmental biologyEndocrinologyMechanism of actionchemistryReceptors Aryl HydrocarbonApoptosisCytochrome P-450 CYP1B1biology.proteinAnti-Infective Agents LocalFemalemedicine.symptomReactive Oxygen SpeciesEnvironmental research
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SMAC mimetics promote NIK-dependent inhibition of CD4 + T H 17 cell differentiation

2019

Second mitochondria-derived activator of caspase (SMAC) mimetics (SMs) are selective antagonists of the inhibitor of apoptosis proteins (IAPs), which activate noncanonical NF-κB signaling and promote tumor cell death. Through gene expression analysis, we found that treatment of CD4+ T cells with SMs during T helper 17 (TH17) cell differentiation disrupted the balance between two antagonistic transcription factor modules. Moreover, proteomics analysis revealed that SMs altered the abundance of proteins associated with cell cycle, mitochondrial activity, and the balance between canonical and noncanonical NF-κB signaling. Whereas SMs inhibited interleukin-17 (IL-17) production and ameliorated …

0303 health sciencesbiologyChemistryActivator (genetics)RELBCellular differentiationCell BiologyCell cycleAryl hydrocarbon receptorInhibitor of apoptosisBiochemistryCell biology03 medical and health sciences0302 clinical medicine030220 oncology & carcinogenesisGene expressionbiology.proteinMolecular BiologyTranscription factor030304 developmental biologyScience Signaling
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Central nervous system involvement at first relapse in patients with acute promyelocytic leukemia treated with all-trans retinoic acid and anthracycl…

2009

Background The prevalence of and risk factors for central nervous system recurrence in patients with acute promyelocytic leukemia are not well established and remain a controversial matter. Design and Methods Between 1996 and 2005, 739 patients with newly diagnosed acute promyelocytic leukemia enrolled in two consecutive trials (PETHEMA LPA96 and LPA99) received induction therapy-with all-trans retinoic acid and idarubicin. Consolidation therapy comprised three courses of anthracycline monochemotherapy (LPA96), with all-trans retinoic acid and reinforced doses of idarubicin in patients with an intermediate or high risk of relapse (LPA99). Central nervous system prophylaxis was not given. Re…

:Chemicals and Drugs::Organic Chemicals::Hydrocarbons::Hydrocarbons Cyclic::Hydrocarbons Aromatic::Polycyclic Hydrocarbons Aromatic::Naphthacenes::Anthracyclines::Daunorubicin::Idarubicin [Medical Subject Headings]:Diseases::Pathological Conditions Signs and Symptoms::Pathologic Processes::Disease Attributes::Recurrence [Medical Subject Headings]Male:Named Groups::Persons::Age Groups::Adult::Middle Aged [Medical Subject Headings]idarubicinGastroenterology:Analytical Diagnostic and Therapeutic Techniques and Equipment::Investigative Techniques::Epidemiologic Methods::Statistics as Topic::Probability::Risk::Risk Factors [Medical Subject Headings]:Organisms::Eukaryota::Animals::Chordata::Vertebrates::Mammals::Primates::Haplorhini::Catarrhini::Hominidae::Humans [Medical Subject Headings]Central Nervous System NeoplasmsLeukemia Promyelocytic AcuteRecurrenceRisk FactorsCumulative incidenceAntibiotics AntineoplasticHematologyMiddle Agedall-trans retinoic acidLeukemiamedicine.anatomical_structure:Named Groups::Persons::Age Groups::Adolescent [Medical Subject Headings]Femalemedicine.drugAcute promyelocytic leukemiaAdultcentral nervous system relapsemedicine.medical_specialty:Diseases::Neoplasms::Neoplasms by Histologic Type::Leukemia::Leukemia Myeloid::Leukemia Myeloid Acute [Medical Subject Headings]AnthracyclineAdolescentCentral nervous system:Check Tags::Male [Medical Subject Headings]TretinoinNeoplasias del sistema nervioso centralCentral nervous system diseaseTretinoinInternal medicine:Named Groups::Persons::Age Groups::Adult [Medical Subject Headings]medicineIdarubicinHumans:Named Groups::Persons::Age Groups::Adult::Aged [Medical Subject Headings]Letters to the Editor:Chemicals and Drugs::Organic Chemicals::Hydrocarbons::Hydrocarbons Acyclic::Alkenes::Polyenes::Carotenoids::Retinoids [Medical Subject Headings]Leucemia promielocítica agudaAgedAntibióticos antineoplásicosbusiness.industryprognostic factors:Chemicals and Drugs::Chemical Actions and Uses::Pharmacologic Actions::Therapeutic Uses::Antineoplastic Agents::Antibiotics Antineoplastic [Medical Subject Headings]acute promyelocytic leukemiamedicine.diseaseSurgery:Diseases::Neoplasms::Neoplasms by Site::Nervous System Neoplasms::Central Nervous System Neoplasms [Medical Subject Headings]:Check Tags::Female [Medical Subject Headings]businessIdarubicin
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Perspectives for the Treatment of Brucellosis in the 21st Century: The Ioannina Recommendations

2007

Policy Forum. Competing interests: ER has received research grants from Daiichi, Bayer, and Theravance and has served as a consultant to Pfizer, Theravance, Bayer, Wyeth, Rosetta, and BiondVax. Summary Points Brucellosis remains the commonest anthropozoonosis worldwide, and its treatment remains complex, requiring protracted administration of more than one antibiotic. In November 2006, a consensus meeting aimed at reaching a common specialist statement on the treatment of brucellosis was held in Ioannina, Greece under the auspices of the International Society of Chemotherapy and the Institute of Continuing Medical Education of Ioannina. The author panel suggests that the optimal treatment o…

:Diseases::Pathological Conditions Signs and Symptoms::Pathologic Processes::Disease Attributes::Recurrence [Medical Subject Headings]Veterinary medicine:Chemicals and Drugs::Carbohydrates::Glycosides::Aminoglycosides::Streptomycin [Medical Subject Headings]:Phenomena and Processes::Microbiological Phenomena::Drug Resistance Microbial [Medical Subject Headings]DiseaseGlobal Health:Organisms::Eukaryota::Animals::Chordata::Vertebrates::Mammals::Primates::Haplorhini::Catarrhini::Hominidae::Humans [Medical Subject Headings]:Health Care::Population Characteristics::Health::World Health [Medical Subject Headings]Terminología como AsuntoBrucellosi:Organisms::Eukaryota::Animals [Medical Subject Headings]:Health Care::Health Care Economics and Organizations::Organizations::International Agencies::United Nations::World Health Organization [Medical Subject Headings]Policy ForumMedicine in Developing CountriesGentamicinasDrug Resistance MicrobialBrucelosisAdhesión a DirectrizGeneral MedicineHumanosDrug CombinationsAntibacterianosDoxycyclineStreptomycinEstreptomicinaMedicine:Chemicals and Drugs::Heterocyclic Compounds::Heterocyclic Compounds with 4 or More Rings::Rifamycins::Rifampin [Medical Subject Headings]Drug Therapy CombinationGuideline AdherenceRifampinFluoroquinolonesSalud Mundialmedicine.medical_specialtyEfficacyResultado del TratamientoInvestigación BiomédicaRecurrenciaTherapeuticsWorld Health OrganizationMicrobiologyAntibiotic resistanceTerminology as Topic:Disciplines and Occupations::Social Sciences::Internationality::International Cooperation::Developing Countries [Medical Subject Headings]HumansMedical journalIntensive care medicineDeveloping Countries:Chemicals and Drugs::Heterocyclic Compounds::Heterocyclic Compounds 1-Ring::Pyrimidines::Trimethoprim::Trimethoprim-Sulfamethoxazole Combination [Medical Subject Headings]medicine.diseaseCotrimoxazoleAnimalesQuimioterapia:Humanities::Humanities::History::History Modern 1601-::History 21st Century [Medical Subject Headings]GentamicinsBrucel·losiBiomedical ResearchCommunicable diseases:Chemicals and Drugs::Heterocyclic Compounds::Heterocyclic Compounds 2-Ring::Quinolines::Quinolones::Fluoroquinolones [Medical Subject Headings]Human diseaseRecurrence:Chemicals and Drugs::Pharmaceutical Preparations::Drug Combinations [Medical Subject Headings]:Information Science::Information Science::Communication::Language::Linguistics::Terminology as Topic [Medical Subject Headings]biologyIraqi patientsRMetaanalysis:Diseases::Bacterial Infections and Mycoses::Bacterial Infections::Gram-Negative Bacterial Infections::Brucellosis [Medical Subject Headings]Historia del Siglo XXIAnti-Bacterial AgentsCombinación Trimetoprim-SulfametoxazolTreatment OutcomeInfectious Diseases:Disciplines and Occupations::Natural Science Disciplines::Science::Research::Biomedical Research [Medical Subject Headings]:Chemicals and Drugs::Organic Chemicals::Hydrocarbons::Hydrocarbons Cyclic::Hydrocarbons Aromatic::Polycyclic Hydrocarbons Aromatic::Naphthacenes::Tetracyclines::Doxycycline [Medical Subject Headings]Fluoroquinolonas:Chemicals and Drugs::Chemical Actions and Uses::Pharmacologic Actions::Therapeutic Uses::Anti-Infective Agents::Anti-Bacterial Agents [Medical Subject Headings]:Chemicals and Drugs::Carbohydrates::Glycosides::Aminoglycosides::Gentamicins [Medical Subject Headings]Países en Desarrollo:Analytical Diagnostic and Therapeutic Techniques and Equipment::Therapeutics::Drug Therapy::Drug Therapy Combination [Medical Subject Headings]BrucellaHistory 21st CenturyBrucellosisWorld healthTrimethoprim Sulfamethoxazole Drug CombinationmedicineAnimals:Analytical Diagnostic and Therapeutic Techniques and Equipment::Diagnosis::Prognosis::Treatment Outcome [Medical Subject Headings]Resistencia a Medicamentosbusiness.industryOrganización Mundial de la SaludBrucellosisMalalties infecciosesTerapèuticabiology.organism_classificationCombinación de MedicamentosDoxiciclinaTherapybusinessBrucella melitensisPLoS Medicine
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Sample Preparation Improvement in Polycyclic Aromatic Hydrocarbons Determination in Olive Oils by Gel Permeation Chromatography and Liquid Chromatogr…

2005

Abstract The determination of 15 polycyclic aromatic hydrocarbons (PAHs) in olive oil samples has been improved in order to obtain a fast methodology with a low limit of detection through the combination of liquid–liquid extraction with acetonitrile and preparative gel permeation chromatography (GPC) prior to the injection of purified extracts into a C18 column. Acetonitrile–water was used as the mobile phase with a gradient from 50 to 95%, w/w, acetonitrile in 30 min. The oven temperature was maintained at 15°C, and fluorometric detection was made at a fixed excitation wavelength of 264 nm and variable, optimal emission wavelength for each analyte ranging from 352 nm for 11-H-benzo(b)fluor…

AcetonitrilesTime FactorsFluoreneChemistry Techniques AnalyticalAnalytical ChemistryGel permeation chromatographychemistry.chemical_compoundPlant OilsEnvironmental ChemistryFluorometryUltrasonicsSample preparationPolycyclic Aromatic HydrocarbonsOlive OilChromatography High Pressure LiquidPharmacologychemistry.chemical_classificationDetection limitFluorantheneFluorenesMethylene ChlorideChromatographyChemistryExtraction (chemistry)TemperatureSilicon DioxideSpectrometry FluorescenceHydrocarbonChromatography GelPyreneAgronomy and Crop ScienceChromatography LiquidFood ScienceJournal of AOAC INTERNATIONAL
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Chemical initiation for butyl and lauryl acrylate monolithic columns for CEC.

2009

Butyl acrylate (BA)- and lauryl acrylate (LA)-based monolithic stationary phases for CEC were synthesized, using a redox system as initiator of polymerization. BA monoliths were initiated with ammonium peroxodisulfate, whereas LA columns were obtained with lauroyl peroxide as initiator. In both cases, TEMED was used to activate the process. The influence of porogenic solvent composition on both morphological and electrochromatographic properties of the resulting monoliths was investigated. Excellent efficiencies (minimum plate heights of 4.2-6.3 microm for BA columns and 2.6-5.3 microm for LA stationary phases, for a PAHs mixture) were achieved. The capability of separation of both types of…

AcrylateLipid PeroxidesButyl acrylateClinical BiochemistryInorganic chemistryReproducibility of ResultsLauroyl peroxideEthylenediaminesBiochemistryRedoxAnalytical Chemistrychemistry.chemical_compoundchemistryPolymerizationAcrylatesAmmonium SulfateCapillary ElectrochromatographyMicroscopy Electron ScanningAmmoniumSolvent compositionPolycyclic Aromatic HydrocarbonsGonadal Steroid HormonesNuclear chemistryElectrophoresis
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Internal exposure of firefighting instructors to polycyclic aromatic hydrocarbons (PAH) during live fire training

2019

Firefighting instructors in live fire training are inevitably exposed to emissions containing, carcinogenic PAH. The study investigated PAH uptake in a group of firefighting instructors during short-term exposure in live fire training by urinary biomonitoring. Six firefighting instructors (non-smokers) completed five 2 h-training sessions each in a carbonaceous-fired simulation unit using self-containing breathing apparatuses (SCBA). Complying with a minimum time interval of six days between the individual training sessions, the participants provided urine samples before and immediately after, as well as 1, 3, 6, 9, 11, and 18 h after each training session. Samples were analyzed for 10 mono…

AdultMale0301 basic medicineSkin AbsorptionMetaboliteeducationPoison controlFirefightingAir Pollutants OccupationalUrineToxicologyFiresExcretion03 medical and health scienceschemistry.chemical_compound0302 clinical medicineAnimal scienceOccupational ExposureBiomonitoringHumansPolycyclic Aromatic HydrocarbonsRespiratory Protective DevicesSkinChemistryTeachingGeneral MedicinePhenanthrene030104 developmental biologyFirefightersPyrene030217 neurology & neurosurgeryEnvironmental MonitoringToxicology Letters
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Parental Exposure to Polycyclic Aromatic Hydrocarbons and the Risk of Childhood Brain Tumors: The SEARCH International Childhood Brain Tumor Study

2004

Experimental evidence suggests that parental exposure to polycyclic aromatic hydrocarbons (PAH), which occurs primarily through tobacco smoke, occupational exposure, and air pollution, could increase the risk of cancer during childhood. Population-based case-control studies carried out in seven countries as part of the SEARCH Program compared data for 1,218 cases of childhood brain tumors and 2,223 controls (1976-1994). Parental occupational exposure to PAH during the 5-year period before birth was estimated with a job exposure matrix. Risk estimates were adjusted for child's age, sex, and study center. Paternal preconceptional occupational exposure to PAH was associated with increased risk…

AdultMalePediatricsmedicine.medical_specialtyAdolescentEpidemiologyJob-exposure matrixPopulationPhysiologyTobacco smokeRisk FactorsOccupational ExposureOdds RatiomedicineHumansPolycyclic Aromatic HydrocarbonsRisk factorChildeducationeducation.field_of_studyBrain Neoplasmsbusiness.industrySmokingInfant NewbornCase-control studyInfantOdds ratioPaternal ExposureCase-Control StudiesChild PreschoolPaternal ExposureFemaleRisk assessmentbusinessAmerican Journal of Epidemiology
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CYP2C8 gene polymorphism and bisphosphonate-related osteonecrosis of the jaw in patients with multiple myeloma

2011

Osteonecrosis of the jaw is an uncommon but potentially serious complication of bisphosphonate therapy in multiple myeloma. Previous studies showed that the presence of one or two minor alleles of the cytochrome P450, subfamily 2C polypeptide 8 gene (CYP2C8) polymorphism rs1934951 was an independent prognostic marker associated with development of osteonecrosis of the jaw in multiple myeloma patients treated with bisphosphonates. The aim of this study was to validate the frequency of SNP rs193451 in 79 patients with multiple myeloma. In 9 (22%) patients developing osteonecrosis of the jaw, a heterozygous genotype was found, in contrast with those who did not develop osteonecrosis of the jaw…

AdultMalemedicine.medical_specialtyPathologyCYP2C8Genotypemedicine.medical_treatmentONJGastroenterologyPolymorphism Single NucleotideCytochrome P-450 CYP2C8stomatognathic systemInternal medicineGenotypemedicineSNPHumansAllelebisphosphonatesMultiple myelomaAllelesAgedAged 80 and overBisphosphonate-associated osteonecrosis of the jawbusiness.industryHematologyBisphosphonateMiddle Agedmedicine.diseasemultiple myelomastomatognathic diseasesBisphosphonate-Associated Osteonecrosis of the JawFemaleBrief ReportsAryl Hydrocarbon HydroxylasesOsteonecrosis of the jawComplicationbusinessMultiple Myeloma
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External and internal exposure to polycyclic aromatic hydrocarbons (PAH) among workers in the production of fire-proof materials – Proposal of a biol…

2006

In 1999, we introduced the German polycyclic aromatic hydrocarbons (PAH) study. The study was designed as a nation-wide investigation on workers exposed to PAH. One aim of the study was to establish biological monitoring guidance values (BMGVs) for different branches. Here, we report on the production of fire-proof materials. This branch of industry is typically confronted with high exposure to PAH and with PAH-induced occupational (cancer) diseases. One hundred and thirty-five employees participated in the course of seven sampling dates in four different plants in Germany. External exposure was determined by personal air monitoring of the 16 EPA-PAH. Human biological monitoring was accompl…

AdultPercentilePopulationAir Pollutants OccupationalUrinechemistry.chemical_compoundAir monitoringGermanyOccupational ExposureHumansIndustryPolycyclic Aromatic HydrocarbonsThreshold Limit ValueseducationCreatinineeducation.field_of_studyPyrenesSmokingPublic Health Environmental and Occupational HealthMiddle AgedPhenanthrenesPah exposureSpot urinechemistryEnvironmental chemistryPyreneEnvironmental MonitoringInternational Journal of Hygiene and Environmental Health
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