Search results for "IATE"

showing 10 items of 4252 documents

Infrared microspectroscopic determination of collagen cross-links in articular cartilage

2017

Collagen forms an organized network in articular cartilage to give tensile stiffness to the tissue. Due to its long half-life, collagen is susceptible to cross-links caused by advanced glycation end-products. The current standard method for determination of cross-link concentrations in tissues is the destructive high-performance liquid chromatography (HPLC). The aim of this study was to analyze the cross-link concentrations nondestructively from standard unstained histological articular cartilage sections by using Fourier transform infrared (FTIR) microspectroscopy. Half of the bovine articular cartilage samples ( n = 27 ) were treated with threose to increase the collagen cross-linking whi…

0301 basic medicineCartilage ArticularGlycation End Products AdvancedcollagenSpectrophotometry InfraredPROTEOGLYCAN01 natural sciencesHigh-performance liquid chromatographychemistry.chemical_compoundBiomedicinsk laboratorievetenskap/teknologiPartial least squares regressionBiomedical Laboratory Science/Technologyinfrared spectroscopyPyridinolineThreoseChemistryMedicinsk bildbehandlingSTIFFNESSinfrapunaspektroskopiata3141AnatomyAtomic and Molecular Physics and OpticsDIFFUSIONElectronic Optical and Magnetic Materialsmedicine.anatomical_structuremultivariate analysisGLYCATION END-PRODUCTSNONENZYMATIC GLYCATIONBiomedical EngineeringInfrared spectroscopyI COLLAGENFORMALIN FIXATIONcross-linksOrthopaedicsBiomaterials03 medical and health sciencesmedicineAnimalsarticular cartilageFourier transform infrared spectroscopyPentosidineLeast-Squares Analysista217ChromatographyCartilage010401 analytical chemistry3126 Surgery anesthesiology intensive care radiology0104 chemical sciencesMedical Image Processing030104 developmental biologyOrtopedi1182 Biochemistry cell and molecular biologyCattleJournal of Biomedical Optics
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Chondroprotective effects of the combination chondroitin sulfate-glucosamine in a model of osteoarthritis induced by anterior cruciate ligament trans…

2016

[EN] Context: The efficacy of the combination chondroitin sulfate-glucosamine (CS-GlcN) in the treatment of knee osteoarthritis (OA) has been suggested in recent clinical studies. In vitro reports have also suggested anti-inflammatory and anti-resorptive effects of this combination. Objective: The aim of this study was to characterize the effects of CS-GlcN on joint degradation in vivo including the assessment of inflammation and bone metabolism in a model of OA. Materials and methods: We have used the OA model induced by anterior cruciate ligament transection (ACLT) in ovariectomised rats. CS-GlcN was administered daily (oral gavage) from week 0 until week 12 after ovariectomy at the dose …

0301 basic medicineCartilage Articularmedicine.medical_specialtyAnterior cruciate ligamentOvariectomyType II collagenOsteoarthritisProtective AgentsBone and BonesBone remodeling03 medical and health scienceschemistry.chemical_compound0302 clinical medicineOsteoprotegerinGlucosamineInternal medicineOsteoarthritisMedicineAnimalsChondroitin sulfateAnterior cruciate ligament transectionAnterior Cruciate LigamentRats Wistar030203 arthritis & rheumatologyPharmacologyGlucosaminebusiness.industryCartilageAnterior Cruciate Ligament InjuriesChondroitin SulfatesGeneral MedicineX-Ray MicrotomographyOsteoarthritis Kneemedicine.diseaseChondroitin sulfate-glucosamine Ovariectomised ratscarbohydrates (lipids)Disease Models Animal030104 developmental biologymedicine.anatomical_structureEndocrinologychemistryDrug Therapy CombinationFemaleJointsInflammation MediatorsbusinessBiomarkersModel
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Hetero-oligomerization of Bacillus thuringiensis Cry1A proteins enhance binding to the ABCC2 transporter of Spodoptera exigua

2021

The ATP binding cassette (ABC) transporters are membrane proteins that can act as putative receptors for Cry proteins from Bacillus thuringiensis (Bt) in the midgut of different insects. For the beet armyworm, Spodoptera exigua, ABCC2 and ABCC3 have been found to interact with Cry1A proteins, the main insecticidal proteins used in Bt crops, as well as Bt-based pesticides. The ABCC2 has shown to have specific binding towards Cry1Ac and is involved in the toxic process of Cry1A proteins, but the role of this transporter and how it relates with the Cry1A proteins is still unknown. Here, we have characterized the interactions between the SeABCC2 and the main proteins that bind to the receptor. …

0301 basic medicineCell SurvivalBacillus thuringiensisATP-binding cassette transporterSpodopteraSpodopteraBiochemistryHemolysin Proteins03 medical and health sciences0302 clinical medicineBacterial ProteinsProtein DomainsBacillus thuringiensisSf9 CellsAnimalsBinding siteReceptorMolecular BiologyBinding SitesBacillus thuringiensis ToxinsbiologyChemistryfungifood and beveragesTransporterCell Biologybiology.organism_classificationMultidrug Resistance-Associated Protein 2Endotoxins030104 developmental biologyMembrane proteinCry1AcBiochemistryMutationInsect ProteinsMultidrug Resistance-Associated ProteinsProtein Multimerization030217 neurology & neurosurgeryProtein BindingBiochemical Journal
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The Role of Nrf2 and PPARγ in the Improvement of Oxidative Stress in Hypertension and Cardiovascular Diseases

2020

Reactive oxygen species are an important element of redox regulation in cells and tissues. During physiological processes, molecules undergo chemical changes caused by reduction and oxidation reactions. Free radicals are involved in interactions with other molecules, leading to oxidative stress. Oxidative stress works two ways depending on the levels of oxidizing agents and products. Excessive action of oxidizing agents damages biomolecules, while a moderate physiological level of oxidative stress (oxidative eustress) is necessary to control life processes through redox signaling required for normal cellular operation. High levels of reactive oxygen species (ROS) mediate pathological change…

0301 basic medicineCell signalingNF-E2-Related Factor 2PhysiologyBlood PressureReviewOxidative phosphorylationmedicine.disease_cause03 medical and health sciences0302 clinical medicinemedicineAnimalsHumansProtein kinase BPI3K/AKT/mTOR pathwaychemistry.chemical_classificationReactive oxygen speciesKelch-Like ECH-Associated Protein 1ChemistryGeneral MedicineKEAP1Antioxidant Response ElementsNFE2L2Cell biologyPPAR gammaOxidative Stress030104 developmental biologyCardiovascular DiseasesHypertensionReactive Oxygen Species030217 neurology & neurosurgeryOxidative stressSignal TransductionPhysiological Research
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Thymus-derived regulatory T cells are positively selected on natural self-antigen through cognate interactions of high functional avidity

2016

Regulatory T (Treg) cells expressing Foxp3 transcripton factor are essential for immune homeostasis. They arise in the thymus as a separate lineage from conventional CD4+Foxp3- T (Tconv) cells. Here, we show that the thymic development of Treg cells depends on the expression of their endogenous cognate self-antigen. The formation of these cells was impaired in mice lacking this self-antigen, while Tconv cell development was not negatively affected. Thymus-derived Treg cells were selected by self-antigens in a specific manner, while autoreactive Tconv cells were produced through degenerate recognition of distinct antigens. These distinct modes of development were associated with the expressi…

0301 basic medicineCell typeCancer ResearchEncephalomyelitis Autoimmune ExperimentalMultiple Sclerosis[SDV]Life Sciences [q-bio]ImmunologyReceptors Antigen T-CellEndogenyT-Cell Antigen Receptor Specificitychemical and pharmacologic phenomenaThymus GlandBiologymedicine.disease_causeAutoantigensT-Lymphocytes RegulatoryAutoimmunity03 medical and health sciencesMice0302 clinical medicineAntigenT-Lymphocyte SubsetsmedicineImmunology and AllergyAnimalsHumansAvidityCTLA-4 AntigenReceptorClonal Selection Antigen-MediatedCells CulturedMice KnockoutCell growthFOXP3Forkhead Transcription Factorshemic and immune systemsPeptide Fragments[SDV] Life Sciences [q-bio]Mice Inbred C57BL030104 developmental biologyInfectious DiseasesImmunologyMyelin-Oligodendrocyte Glycoprotein030215 immunology
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OFIP/KIAA0753 forms a complex with OFD1 and FOR20 at pericentriolar satellites and centrosomes and is mutated in one individual with oral-facial-digi…

2016

Item does not contain fulltext Oral-facial-digital (OFD) syndromes are rare heterogeneous disorders characterized by the association of abnormalities of the face, the oral cavity and the extremities, some due to mutations in proteins of the transition zone of the primary cilia or the closely associated distal end of centrioles. These two structures are essential for the formation of functional cilia, and for signaling events during development. We report here causal compound heterozygous mutations of KIAA0753/OFIP in a patient with an OFD VI syndrome. We show that the KIAA0753/OFIP protein, whose sequence is conserved in ciliated species, associates with centrosome/centriole and pericentrio…

0301 basic medicineCentriolecell-cycle progressionGene Expressionmedicine.disease_causeCiliopathieshuman-disease genemolecular characterizationbbs proteinsGenetics (clinical)Conserved SequenceCentriolesGeneticsMutationCiliumCiliary transition zoneMetabolic Disorders Radboud Institute for Molecular Life Sciences [Radboudumc 6]General MedicineOrofaciodigital Syndromes3. Good healthcentriolar satellitesmultiple sequence alignmentbasal body dockingFemaleMicrotubule-Associated ProteinsProtein BindingHeterozygoteMolecular Sequence DataBiology03 medical and health sciencesIntraflagellar transportCiliogenesis[ SDV.MHEP ] Life Sciences [q-bio]/Human health and pathologyGeneticsmedicineHumansAmino Acid SequenceCiliaMolecular BiologyCentrosomeintraflagellar transportBase SequenceInfant NewbornProteins030104 developmental biologyCentrosomeMutationciliary transition zoneSequence Alignment[SDV.MHEP]Life Sciences [q-bio]/Human health and pathologyciliogenesis
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Fourier transform infrared analysis of commercial formulations for Varroa treatment

2017

A comparative study has been carried out between univariate and multivariate calibration strategies for the simultaneous determination of camphor, thymol, menthol and eucalyptol in commercial formulations used for Varroa treatment. Absorbance peak heights of the transmission mid-infrared (MIR) spectra of individual monoterpenes, prepared in dichloromethane, were measured at 1737, 1151, 1022 and 980 cm−1 (corrected with a base-line at 1933 cm−1) for camphor, thymol, menthol and eucalyptol, respectively. Data were processed using the proportional equations approach in univariate mode. For multivariate calibration, partial least squares (PLS) regression based on a classical 42 design for stand…

0301 basic medicineChromatographyChemistryGeneral Chemical EngineeringMonoterpene010401 analytical chemistryGeneral EngineeringUnivariateAnalytical chemistry01 natural sciences0104 chemical sciencesAnalytical ChemistryAbsorbance03 medical and health scienceschemistry.chemical_compoundCamphor030104 developmental biologyEucalyptolPartial least squares regressionMentholThymolAnalytical Methods
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Enhanced autophagic-lysosomal activity and increased BAG3-mediated selective macroautophagy as adaptive response of neuronal cells to chronic oxidati…

2019

Oxidative stress and a disturbed cellular protein homeostasis (proteostasis) belong to the most important hallmarks of aging and of neurodegenerative disorders. The proteasomal and autophagic-lysosomal degradation pathways are key measures to maintain proteostasis. Here, we report that hippocampal cells selected for full adaptation and resistance to oxidative stress induced by hydrogen peroxide (oxidative stress-resistant cells, OxSR cells) showed a massive increase in the expression of components of the cellular autophagic-lysosomal network and a significantly higher overall autophagic activity. A comparative expression analysis revealed that distinct key regulators of autophagy are upregu…

0301 basic medicineClinical BiochemistryLFQ Label-free quantificationLETM Leucine zipper and EF-hand containing transmembrane proteinmedicine.disease_causeBiochemistryCHX Cycloheximide0302 clinical medicineBNIP3 Bcl-2 interacting protein 3RAPA RapamycinPIK3C3 Class III PI3‐kinasePhosphorylationlcsh:QH301-705.5Neuronslcsh:R5-920PolyUB PolyubiquitinChemistryBAG3OPA1 Optic atrophy 1TOR Serine-Threonine KinasesWIPI1 WD repeat domain phosphoinositide-interacting protein 1ATG Autophagy relatedTFEB Transcription factor EBCell biologyMitochondriasiRNA Small interfering RNADLP1 Dynamin-like protein 1LAMP1 Lysosomal‐associated membrane protein 1PURO Puromycinlcsh:Medicine (General)Protein homeostasisResearch PaperBafA1 Bafilomycin A1LAMP2 Lysosomal‐associated membrane protein 2Proteasome Endopeptidase ComplexRAB18 Member RAS oncogeneTUB TubulinLC3 Light chain 3 proteinOxidative phosphorylationBAG3CTSD Cathepsin DModels BiologicalCell Line03 medical and health sciencesDownregulation and upregulationMacroautophagymedicineAutophagyHumansAdaptationBAG1 Bcl-2-associated athanogene 1BECN1 Beclin1PI3K/AKT/mTOR pathwayAdaptor Proteins Signal TransducingTEM Transmission electron microscopyHsp70 Heat shock protein 70Organic ChemistryAutophagyAutophagosomesmTOR Mammalian target of rapamycinHsp70Oxidative Stress030104 developmental biologyProteostasislcsh:Biology (General)CV CanavanineBAG3 Bcl-2-associated athanogene 3MTT (3-(45-Dimethylthiazol-2-yl)-25-Diphenyltetrazolium Bromide)Apoptosis Regulatory ProteinsLysosomes030217 neurology & neurosurgeryOxidative stressRedox Biology
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Mitochondrial BAX Determines the Predisposition to Apoptosis in Human AML

2017

Abstract Purpose: Cell-to-cell variability in apoptosis signaling contributes to heterogenic responses to cytotoxic stress in clinically heterogeneous neoplasia, such as acute myeloid leukemia (AML). The BCL-2 proteins BAX and BAK can commit mammalian cells to apoptosis and are inhibited by retrotranslocation from the mitochondria into the cytosol. The subcellular localization of BAX and BAK could determine the cellular predisposition to apoptotic death. Experimental Design: The relative localization of BAX and BAK was determined by fractionation of AML cell lines and patient samples of a test cohort and a validation cohort. Results: This study shows that relative BAX localization determine…

0301 basic medicineCytoplasmCancer ResearchApoptosisKaplan-Meier EstimateBiologyMitochondrionMitochondrial Proteins03 medical and health sciencesCell Line Tumorhemic and lymphatic diseasesmedicineHumansCytotoxic T cellLeukocytosisRetrospective Studiesbcl-2-Associated X ProteinMyeloid leukemiaCancerRetrospective cohort studymedicine.diseaseMitochondriaProtein TransportLeukemiabcl-2 Homologous Antagonist-Killer Protein030104 developmental biologyOncologyLeukemia MyeloidApoptosisAcute DiseaseImmunologyCancer researchmedicine.symptomHeLa CellsClinical Cancer Research
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Regulation of Dendritic Spine Morphology in Hippocampal Neurons by Copine-6.

2015

Dendritic spines compartmentalize information in the brain, and their morphological characteristics are thought to underly synaptic plasticity. Here we identify copine-6 as a novel modulator of dendritic spine morphology. We found that brain-derived neurotrophic factor (BDNF) - a molecule essential for long-term potentiation of synaptic strength - upregulated and recruited copine-6 to dendritic spines in hippocampal neurons. Overexpression of copine-6 increased mushroom spine number and decreased filopodia number, while copine-6 knockdown had the opposite effect and dramatically increased the number of filopodia, which lacked PSD95. Functionally, manipulation of post-synaptic copine-6 level…

0301 basic medicineDendritic spineVesicular Inhibitory Amino Acid Transport Proteinsdrug effects [Synapses]Tropomyosin receptor kinase BHippocampal formationgenetics [Carrier Proteins]pharmacology [Brain-Derived Neurotrophic Factor]Hippocampusmetabolism [Vesicular Inhibitory Amino Acid Transport Proteins]Mtap2 protein ratMice0302 clinical medicineNeurotrophic factorsdrug effects [Synaptic Vesicles]genetics [Nerve Tissue Proteins]Cells Culturedultrastructure [Neurons]NeuronsChemistryLong-term potentiationSynaptic Potentialsphysiology [Neurons]physiology [Dendritic Spines]Cell biologyultrastructure [Dendritic Spines]metabolism [Receptor trkB]Synaptic VesiclesFilopodiaultrastructure [Synaptosomes]Disks Large Homolog 4 ProteinMicrotubule-Associated ProteinsCognitive NeuroscienceDendritic Spinesmetabolism [Disks Large Homolog 4 Protein]Nerve Tissue Proteinsgenetics [Receptor trkB]03 medical and health sciencesCellular and Molecular NeuroscienceOrgan Culture Techniquesphysiology [Synaptic Vesicles]metabolism [Vesicular Glutamate Transport Protein 1]TrkB protein ratdrug effects [Synaptic Potentials]Synaptic vesicle recyclingAnimalsHumansReceptor trkBddc:610metabolism [Synaptosomes]metabolism [Nerve Tissue Proteins]Viaat protein ratBrain-Derived Neurotrophic Factormetabolism [Microtubule-Associated Proteins]Rats030104 developmental biologygenetics [Synaptic Potentials]nervous systemcytology [Hippocampus]Synaptic plasticityultrastructure [Synapses]SynapsesVesicular Glutamate Transport Protein 1CPNE6 protein ratphysiology [Synapses]Carrier Proteins030217 neurology & neurosurgerymetabolism [Carrier Proteins]SynaptosomesCerebral cortex (New York, N.Y. : 1991)
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