Search results for "LLS"

showing 10 items of 10088 documents

Cholesterol trafficking and raft-like membrane domain composition mediate scavenger receptor class B type 1-dependent lipid sensing in intestinal epi…

2018

IF 5.547; International audience; Scavenger receptor Class B type 1 (SR-B1) is a lipid transporter and sensor. In intestinal epithelial cells, SR-B1-dependent lipid sensing is associated with SR-B1 recruitment in raft-like/ detergent-resistant membrane domains and interaction of its C-terminal transmembrane domain with plasma membrane cholesterol. To clarify the initiating events occurring during lipid sensing by SR-B1, we analyzed cholesterol trafficking and raft-like domain composition in intestinal epithelial cells expressing wild-type SR-B1 or the mutated form SR-B1-Q445A, defective in membrane cholesterol binding and signal initiation. These features of SR-B1 were found to influence bo…

0301 basic medicineArticlescavenger receptor03 medical and health scienceschemistry.chemical_compoundMembrane MicrodomainsLipid droplet[SDV.BBM] Life Sciences [q-bio]/Biochemistry Molecular BiologyHumans[SDV.BBM]Life Sciences [q-bio]/Biochemistry Molecular BiologyScavenger receptorIntestinal MucosaMolecular BiologyLipid raft[ SDV.BBM ] Life Sciences [q-bio]/Biochemistry Molecular BiologyCholesterolcholesterolEpithelial CellsCell BiologyLipid DropletsScavenger Receptors Class BSphingolipidCell biologySphingomyelinslipid raftTransmembrane domain030104 developmental biologychemistrylipid traffickinglipids (amino acids peptides and proteins)sphingolipidSignal transductionCaco-2 CellsLysophospholipidsSphingomyelinSignal Transduction
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Effect of chronic exercise on myocardial electrophysiological heterogeneity and stability. Role of intrinsic cholinergic neurons: A study in the isol…

2018

[EN] A study has been made of the effect of chronic exercise on myocardial electrophysiological heterogeneity and stability, as well as of the role of cholinergic neurons in these changes. Determinations in hearts from untrained and trained rabbits on a treadmill were performed. The hearts were isolated and perfused. A pacing electrode and a recording multielectrode were located in the left ventricle. The parameters determined during induced VF, before and after atropine (1 mu M), were: fibrillatory cycle length (VV), ventricular functional refractory period (FRPVF), normalized energy (NE) of the fibrillatory signal and its coefficient of variation (CV), and electrical ventricular activatio…

0301 basic medicineAtropineMaleRefractory Period ElectrophysiologicalRefractory periodPhysiology030204 cardiovascular system & hematologyBiochemistryRunningTissue Culture Techniques0302 clinical medicineAnimal CellsMuscarinic acetylcholine receptorMedicine and Health SciencesMedicinePublic and Occupational HealthTreadmillMammalsNeuronsMultidisciplinaryQREukaryotaHeartNeurochemistryNeurotransmittersAnimal ModelsSports ScienceCardiovascular physiologyElectrophysiologyAtropineChemistrymedicine.anatomical_structureExperimental Organism SystemsVentricular FibrillationPhysical SciencesVertebratesCardiologyLeporidsMedicineRabbitsCellular TypesAnatomyArrhythmiamedicine.drugResearch Articlemedicine.medical_specialtyScienceCholinergicsCardiologyMuscarinic AntagonistsResearch and Analysis MethodsTECNOLOGIA ELECTRONICA03 medical and health sciencesAlkaloidsInternal medicineAnimalsCholinergic neuronSports and Exercise MedicineExercisebusiness.industryChemical CompoundsOrganismsParasympatholyticsBiology and Life SciencesCell BiologyPhysical ActivityElectrophysiology030104 developmental biologyVentriclePhysical FitnessCellular NeuroscienceAmniotesAnimal StudiesCardiovascular AnatomybusinessNeuroscience
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Progranulin overexpression in sensory neurons attenuates neuropathic pain in mice: Role of autophagy

2016

Peripheral or central nerve injury is a frequent cause of chronic pain and the mechanisms are not fully understood. Using newly generated transgenic mice we show that progranulin overexpression in sensory neurons attenuates neuropathic pain after sciatic nerve injury and accelerates nerve healing. A yeast-2-hybrid screen revealed putative interactions of progranulin with autophagy-related proteins, ATG12 and ATG4b. This was supported by colocalization and proteomic studies showing regulations of ATG13 and ATG4b and other members of the autophagy network, lysosomal proteins and proteins involved in endocytosis. The association of progranulin with the autophagic pathway was functionally confi…

0301 basic medicineAutophagy-Related ProteinsMiceProgranulinsGanglia SpinalDorsal root gangliaGranulinsPain MeasurementCD11b AntigenMicrofilament ProteinsChronic painSciatic nerve injuryCysteine Endopeptidasesmedicine.anatomical_structureNociceptionNeurologyNeuropathic painIntercellular Signaling Peptides and Proteinsmedicine.symptomMicrotubule-Associated ProteinsNerve injuryProgranulinSensory Receptor CellsGreen Fluorescent ProteinsPainMice Transgeniclcsh:RC321-571ATG1203 medical and health sciencesLysosomal-Associated Membrane Protein 1mental disordersmedicineAutophagyAnimalslcsh:Neurosciences. Biological psychiatry. NeuropsychiatryActivating Transcription Factor 3Sensory neuronbusiness.industryAutophagyCalcium-Binding ProteinsNerve injurymedicine.diseaseSensory neuronMice Inbred C57BLDisease Models Animal030104 developmental biologyGene OntologyNeuralgiabusinessApoptosis Regulatory ProteinsNeuroscienceNeurobiology of Disease
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Secretion of autoimmune antibodies in the human subcutaneous adipose tissue

2018

The adipose tissue (AT) contributes to systemic and B cell intrinsic inflammation, reduced B cell responses and secretion of autoimmune antibodies. In this study we show that adipocytes in the human obese subcutaneous AT (SAT) secrete several pro-inflammatory cytokines and chemokines, which contribute to the establishment and maintenance of local and systemic inflammation, and consequent suboptimal immune responses in obese individuals, as we have previously shown. We also show that pro-inflammatory chemokines recruit immune cells expressing the corresponding receptors to the SAT, where they also contribute to local and systemic inflammation, secreting additional pro-inflammatory mediators.…

0301 basic medicineB CellsPhysiologylcsh:MedicineAutoimmunityPathology and Laboratory MedicineSystemic inflammationWhite Blood CellsAnimal CellsImmune PhysiologyPlasma cell differentiationAdipocytesMedicine and Health Scienceslcsh:ScienceImmune ResponseConnective Tissue CellsInnate Immune SystemMultidisciplinaryT CellsBody Fluids3. Good healthBloodmedicine.anatomical_structurePhysiological ParametersConnective TissueCytokinesChemokinesCellular TypesAnatomymedicine.symptomResearch ArticleLipolysisImmune CellsImmunologySubcutaneous FatInflammationBiology03 medical and health sciencesSigns and SymptomsImmune systemAntigenDiagnostic MedicinemedicineHumansObesityAntibody-Producing CellsB cellAutoantibodiesInflammationBlood CellsTumor Necrosis Factor-alphalcsh:RBody WeightAutoantibodyBiology and Life SciencesGerminal centerCell BiologyMolecular DevelopmentOxidative StressBiological Tissue030104 developmental biologyImmune SystemImmunologylcsh:QTranscription FactorsDevelopmental BiologyPLOS ONE
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Dendritic and Axonal L-Type Calcium Channels Cooperate to Enhance Motoneuron Firing Output during Drosophila Larval Locomotion

2017

Behaviorally adequate neuronal firing patterns are critically dependent on the specific types of ion channel expressed and on their subcellular localization. This study combinesin situelectrophysiology with genetic and pharmacological intervention in larvalDrosophila melanogasterof both sexes to address localization and function of L-type like calcium channels in motoneurons. We demonstrate that Dmca1D (Cav1 homolog) L-type like calcium channels localize to both the somatodendritic and the axonal compartment of larval crawling motoneurons.In situpatch-clamp recordings in genetic mosaics reveal that Dmca1D channels increase burst duration and maximum intraburst firing frequencies during craw…

0301 basic medicineBK channelSodium ChannelsSK channel03 medical and health sciences0302 clinical medicineAnimalsDrosophila ProteinsLarge-Conductance Calcium-Activated Potassium ChannelsResearch ArticlesMotor NeuronsVoltage-dependent calcium channelbiologyGeneral NeuroscienceSodium channelCalcium channelfungiExcitatory Postsynaptic PotentialsAfterhyperpolarizationDendritic CellsAxonsElectrophysiological PhenomenaElectrophysiologyStretch-activated ion channel030104 developmental biologyDrosophila melanogasternervous systemLarvaSynapsesbiology.proteinCalcium ChannelsNeuroscience030217 neurology & neurosurgeryLocomotion
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Quantitative and qualitative profiles of circulating monocytes may help identifying tuberculosis infection and disease stages

2017

Tuberculosis (TB) is one of the most important cause of morbidity and death among infectious diseases, and continuous efforts are needed to improve diagnostic tools and therapy. Previous published studies showed that the absolute cells number of monocytes or lymphocytes in peripheral blood or yet the ratio of monocytes to lymphocytes displayed the ability to predict the risk of active TB. In the present study we evaluated the ratio of monocytes to lymphocytes variation and we also analyzed the ex-vivo expression of CD64 on monocytes as tools to identify biomarkers for discriminating TB stages. Significant differences were found when the average ratio of monocytes to lymphocytes of active TB…

0301 basic medicineBacterial DiseasesMalelcsh:MedicineMycobacterium tuberculosiMonocyteMonocytesWhite Blood Cells0302 clinical medicineAnimal CellsMedicine and Health SciencesLymphocyteslcsh:ScienceImmune ResponseAged 80 and overMultidisciplinarybiologyMiddle Aged3. Good healthActinobacteriamedicine.anatomical_structureInfectious DiseasesPhenotypeAdolescent; Adult; Aged; Aged 80 and over; Biomarkers; Case-Control Studies; Female; Humans; Male; Middle Aged; Monocytes; Mycobacterium tuberculosis; Phenotype; Tuberculosis; Young Adult; Biochemistry Genetics and Molecular Biology (all); Agricultural and Biological Sciences (all)Biomarker (medicine)Tuberculosis Diagnosis and ManagementFemaleCellular TypesCase-Control StudieResearch ArticleHumanAdultTuberculosisAdolescentTuberculosiImmune CellsImmunologyMycobacterium tuberculosis03 medical and health sciencesYoung AdultTuberculosis diagnosisDiagnostic MedicinemedicineHumansTuberculosisAgedBlood CellsBiochemistry Genetics and Molecular Biology (all)Receiver operating characteristicBacteriabusiness.industryMonocytelcsh:RCase-control studyOrganismsBiology and Life SciencesMycobacterium tuberculosisCell BiologyBiomarkerbiology.organism_classificationmedicine.diseaseTropical DiseasesConfidence interval030104 developmental biologyAgricultural and Biological Sciences (all)Case-Control StudiesImmunologylcsh:QbusinessBiomarkers030215 immunology
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Dynamics and predicted drug response of a gene network linking dedifferentiation with β-catenin dysfunction in hepatocellular carcinoma

2019

Background & Aims Alterations of individual genes variably affect the development of hepatocellular carcinoma (HCC). Thus, we aimed to characterize the function of tumor-promoting genes in the context of gene regulatory networks (GRNs). Methods Using data from The Cancer Genome Atlas, from the LIRI-JP (Liver Cancer – RIKEN, JP project), and from our transcriptomic, transfection and mouse transgenic experiments, we identify a GRN which functionally links LIN28B-dependent dedifferentiation with dysfunction of β-catenin (CTNNB1). We further generated and validated a quantitative mathematical model of the GRN using human cell lines and in vivo expression data. Results We found that LIN28B and C…

0301 basic medicineBeta-cateninCarcinoma HepatocellularHepatocellular carcinomaLIN28BCellGene regulatory networkPrincipal component analysisMice TransgenicBiologyTransfectionTranscriptomeCohort Studies03 medical and health sciencesMice0302 clinical medicineMathematical modelmicroRNAmedicineAnimalsHumansGene Regulatory NetworksCTNNB1Genebeta CateninHepatologySequence Analysis RNALiver NeoplasmsGene regulatory networkRNA-Binding ProteinsHGF/MET pathwayMicroRNAHep G2 CellsHCCSModels TheoreticalPrognosisPersonalized medicinedigestive system diseases030104 developmental biologymedicine.anatomical_structureCancer researchSMARCA4biology.protein030211 gastroenterology & hepatologyTranscriptome
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The cytoprotective protein MANF promotes neuronal survival independently from its role as a GRP78 cofactor

2021

Mesencephalic astrocyte-derived neurotrophic factor (MANF) is an endoplasmic reticulum (ER)-stress-regulated protein exhibiting cytoprotective properties through a poorly understood mechanism in various in vitro and in vivo models of neuronal and non-neuronal damage. Although initially characterized as a secreted neurotrophic factor for midbrain dopamine neurons, MANF has recently gained more interest for its intracellular role in regulating the ER homeostasis, including serving as a cofactor of the chaperone glucose-regulated protein 78 (GRP78). We aimed for a better understanding of the neuroprotective mechanisms of MANF. Here we show for the first time that MANF promotes the survival of …

0301 basic medicineBiFC bimolecular fluorescence complementationMST microscale thermophoresisPDIA1 protein disulfide isomerase family A member 1ApoptosisNEUROTROPHIC FACTOR MANFEndoplasmic ReticulumBiochemistryprotein-protein interactionMiceBimolecular fluorescence complementationUPR unfolded protein responseENDOPLASMIC-RETICULUM STRESSMesencephalonNeurotrophic factorsInsulin-Secreting CellsProtein Interaction MappingBINDINGCOMPREHENSIVE RESOURCEATF6unfolded protein response (UPR)PDIA6 protein disulfide isomerase family A member 6PPIs protein-protein interactionsEndoplasmic Reticulum Chaperone BiPHeat-Shock ProteinsNPTN neuroplastinbiologyChemistryapoptosisunfolded protein responsedopamine neurons3. Good healthCell biologyGDNF glial cell line–derived neurotrophic factorIRE1-ALPHASBD substrate-binding domainendoplasmic reticulum stressMANF mesencephalic astrocyte-derived neurotrophic factorTm tunicamycinneuroprotectionResearch ArticleProtein BindingSignal TransductionGRP78Protein Disulfide-Isomerase FamilyCell SurvivalTH tyrosine hydroxylasePrimary Cell CultureSCG superior cervical ganglionProtein Disulfide-IsomerasesIRE1 inositol-requiring enzyme 1ER-STRESSER endoplasmic reticulum03 medical and health sciencesohjelmoitunut solukuolemaC-MANF C-terminal domain of MANFCSPs chemical shift perturbationsAnimalsHumansHSP70 Heat-Shock ProteinsNerve Growth FactorsNBD nucleotide-binding domainNMR nuclear magnetic resonanceMolecular Biology030102 biochemistry & molecular biologyBIPATF6Dopaminergic NeuronsGene Expression ProfilingBinding proteinneuronal cell deathDISSOCIATIONCell BiologyNEI nucleotide exchange inhibitorEmbryo MammalianadenosiinitrifosfaattiATPhermosolutmesencephalic astrocyte-derived neurotrophic factorprotein–protein interactionPERK protein kinase RNA-like ER kinaseHEK293 Cells030104 developmental biologyGene Expression RegulationChaperone (protein)Tg thapsigarginbiology.proteinUnfolded protein responseAP-MS affinity purification mass spectrometry1182 Biochemistry cell and molecular biologyGFP-SH SH-tagged GFPendoplasmic reticulum stress (ER stress)DA dopaminemesencephalic astrocyte-derived neurotrophic factor (MANF)proteiinitNeuroplastin
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Assembly, growth and conductive properties of tellurium nanorods produced by Rhodococcus aetherivorans BCP1

2018

AbstractTellurite (TeO32−) is a hazardous and toxic oxyanion for living organisms. However, several microorganisms can bioconvert TeO32− into the less toxic form of elemental tellurium (Te0). Here, Rhodococcus aetherivorans BCP1 resting (non-growing) cells showed the proficiency to produce tellurium-based nanoparticles (NPs) and nanorods (NRs) through the bioconversion of TeO32−, depending on the oxyanion initial concentration and time of cellular incubation. Te-nanostructures initially appeared in the cytoplasm of BCP1 cells as spherical NPs, which, as the exposure time increased, were converted into NRs. This observation suggested the existence of an intracellular mechanism of TeNRs assem…

0301 basic medicineBioconversionchemistry.chemical_elementNanoparticlelcsh:MedicineOxyanion02 engineering and technologySettore BIO/19 - Microbiologia GeneraleArticleNanomaterialsSurface-Active Agent03 medical and health scienceschemistry.chemical_compoundSurface-Active AgentsRhodococcuslcsh:ScienceMultidisciplinaryNanotubesbiologyChemistrylcsh:RElectric Conductivitynanoparticles Rhodococcus aetherivorans tellurite resting cells021001 nanoscience & nanotechnologybiology.organism_classificationNanotube030104 developmental biologyChemical engineeringChemical stabilityNanorodlcsh:QTellurium0210 nano-technologyTelluriumRhodococcusRhodococcuScientific Reports
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Dextran-based therapeutic nanoparticles for hepatic drug delivery.

2016

Aim: Evaluation of dextran-based nanoparticles (DNP) as a drug delivery system to target myeloid cells of the liver. Materials & methods: DNP were synthesized and optionally PEGylated. Their toxicity and cellular uptake were studied in vitro. Empty and siRNA-carrying DNP were tested in vivo with regard to biodistribution and cellular uptake. Results: In vitro, DNP were taken up by cells of the myeloid lineage without compromising their viability. In vivo, empty and siRNA-carrying DNP distributed to the liver where a single treatment addressed approximately 70% of macrophages and dendritic cells. Serum parameters indicated no in vivo toxicity. Conclusion: DNP are multifunctional liver-s…

0301 basic medicineBiodistributionMaterials scienceCell SurvivalSurface PropertiesBiomedical EngineeringMedicine (miscellaneous)Antigens Differentiation Myelomonocyticchemical and pharmacologic phenomenaBioengineering02 engineering and technologyDevelopmentPharmacologyPolyethylene Glycols03 medical and health scienceschemistry.chemical_compoundMiceIn vivoAntigens CDAnimalsHumansGeneral Materials ScienceTissue DistributionParticle SizeRNA Small InterferingDrug CarriersMice Inbred BALB Corganic chemicalsMacrophageshemic and immune systemsDextransDendritic cell3T3 CellsDendritic Cells021001 nanoscience & nanotechnology030104 developmental biologyDextranRAW 264.7 CellschemistryLiverDrug deliveryToxicityPEGylationNanoparticles0210 nano-technologyDrug carrierNanomedicine (London, England)
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