0000000001052749

AUTHOR

Valentina Bollati

showing 5 related works from this author

Sterol 27-hydroxylase polymorphism significantly associates with shorter telomere, higher cardiovascular and type-2 diabetes risk in obese subjects

2018

Background/objectivesThe pathologic relationship linking obesity and lipid dismetabolism with earlier onset of aging-related disorders, including cardiovascular disease (CVD) and type-2 diabetes (T2D), is not fully elucidate. Chronic inflammatory state, in obese individuals, may accelerate cellular aging. However, leukocyte telomere length (LTL), the cellular biological aging indicator, is elusively linked with obesity. Recent studies indicate that sterol 27-hydroxylase (CYP27A1) is an emerging antiatherogenic enzyme, that, by converting extrahepatic cholesterol to 27-hydroxycholesterol, facilitates cholesterol removal via high-density lipoprotein-cholesterol (HDL-C). We tested the hypothes…

0301 basic medicinePremature agingmedicine.medical_specialtyGenotypingHDLEndocrinology Diabetes and MetabolismType 2 diabetesOverweightCardiovascular diseases; Cholesterol; Diabetes mellitus type 2; Genotyping; HDL; Insulin sensitive obese; Obesity; Telomere shortening; Endocrinology Diabetes and Metabolismlcsh:Diseases of the endocrine glands. Clinical endocrinologyInsulin sensitive obeseTelomere shortening03 medical and health scienceschemistry.chemical_compoundInsulin resistanceWaist–hip ratioDiabetes mellitus type 2EndocrinologyInternal medicineDiabetes mellitusmedicineGlucose homeostasisObesityOriginal Research2. Zero hungerlcsh:RC648-665business.industrymedicine.disease3. Good healthDiabetes and Metabolism030104 developmental biologyEndocrinologyCardiovascular diseasesCholesterolchemistryGlycated hemoglobinmedicine.symptombusiness
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PCSK9 Confers Inflammatory Properties to Extracellular Vesicles Released by Vascular Smooth Muscle Cells

2022

Vascular smooth muscle cells (VSMCs) are key participants in both early- and late-stage atherosclerosis and influence neighbouring cells possibly by means of bioactive molecules, some of which are packed into extracellular vesicles (EVs). Proprotein convertase subtilisin/kexin type 9 (PCSK9) is expressed and secreted by VSMCs. This study aimed to unravel the role of PCSK9 on VSMCs-derived EVs in terms of content and functionality. EVs were isolated from human VSMCs overexpressing human PCSK9 (VSMCPCSK9-EVs) and tested on endothelial cells, monocytes, macrophages and in a model of zebrafish embryos. Compared to EVs released from wild-type VSMCs, VSMCPCSK9-EVs caused a rise in the expression …

Myocytes Smooth MusclePCSK9; atherosclerosis; extracellular vesicles; inflammation; vascular smooth muscle cellsPCSK9; atherosclerosis; extracellular vesicles; inflammation; vascular smooth muscle cells.Muscle Smooth VascularCatalysisPCSK9Inorganic ChemistryExtracellular VesiclesSettore BIO/13 - Biologia ApplicataSettore MED/44 - Medicina del Lavorovascular smooth muscle cellsAnimalsHumansPhysical and Theoretical ChemistryMolecular BiologyZebrafishSpectroscopySettore MED/04 - Patologia GeneraleOrganic ChemistryEndothelial CellsGeneral MedicineComputer Science Applicationsinflammationextracellular vesicles; PCSK9; atherosclerosis; inflammation; vascular smooth muscle cellsSettore BIO/14 - FarmacologiaatherosclerosisProprotein Convertase 9International Journal of Molecular Sciences
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Genome-wide DNA methylation study in human placenta identifies novel loci associated with maternal smoking during pregnancy

2016

BACKGROUND: We conducted an epigenome-wide association study (EWAS) of DNA methylation in placenta in relation to maternal tobacco smoking during pregnancy and examined whether smoking-induced changes lead to low birthweight. METHODS: DNA methylation in placenta was measured using the Illumina HumanMethylation450 BeadChip in 179 participants from the INfancia y Medio Ambiente (INMA) birth cohort. Methylation levels across 431 311 CpGs were tested for differential methylation between smokers and non-smokers in pregnancy. We took forward three top-ranking loci for further validation and replication by bisulfite pyrosequencing using data of 248 additional participants of the INMA cohort. We ex…

0301 basic medicineAdultMaleplacentaEpidemiologyMaternal smokingPlacentaEpigenesis GeneticCohort Studies03 medical and health sciencesPregnancyTobacco SmokingMedicineBirth WeightHumansFetal programmingtobacco smokingCotinineDones embarassades -- Consum de tabacDNA methylationepigeneticsbusiness.industryInfant NewbornHuman placentaGeneral MedicineDNA MethylationMendelian Randomization Analysis030104 developmental biologyfetal programmingbirthweightMaternal ExposureSpainLinear ModelsChristian ministryCpG IslandsFemaleDNA -- MetilacióbusinessHumanitiesGenome-Wide Association Study
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Prenatal exposure to mixtures of xenoestrogens and genome-wide DNA methylation in human placenta

2015

BACKGROUND: In utero exposure to xenostrogens may modify the epigenome. We explored the association of prenatal exposure to mixtures of xenoestrogens and genome-wide placental DNA methylation. MATERIALS & METHODS: Sex-specific associations between methylation changes in placental DNA by doubling the concentration of TEXB-alpha exposure were evaluated by robust multiple linear regression. Two CpG sites were selected for validation and replication in additional male born placentas. RESULTS: No significant associations were found, although the top significant CpGs in boys were located in the LRPAP1, HAGH, PPARGC1B, KCNQ1 and KCNQ1DN genes, previously associated to birth weight, Type 2 diabetes…

0301 basic medicineMaleCancer Researchmedicine.medical_specialtymedicine.medical_treatmentPlacentaADNBiologyEpigenesis GeneticAndrology03 medical and health scienceschemistry.chemical_compoundSex FactorsPregnancyPlacentaInternal medicineGeneticsmedicineBirth WeightHumansPrenatalLDL-Receptor Related Protein-Associated ProteinGeneTEXBEndocrine disruptorsDNA methylationEpigenome xenoestrogensRNA-Binding ProteinsEstrogensMethylationEpigenomeSteroid hormone030104 developmental biologyEndocrinologymedicine.anatomical_structureXenoestrogenCpG sitechemistryPrenatal Exposure Delayed EffectsDNA methylationKCNQ1 Potassium ChannelProgrammingCpG IslandsFemaleThiolester HydrolasesCarrier ProteinsGenome-Wide Association Study
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Plasmatic extracellular vesicle microRNAs in malignant pleural mesothelioma and asbestos-exposed subjects suggest a 2-miRNA signature as potential bi…

2017

Background Malignant Pleural Mesothelioma (MPM) is an aggressive cancer mainly caused by asbestos exposure and refractory to current therapies. Specific diagnostic markers for early MPM diagnosis are needed. Changes in miRNA expression have been implicated in several diseases and cancers, including MPM. We examined if a specific miRNA signature in plasmatic extracellular vesicles (EV) may help to discriminate between malignant pleural mesothelioma patients (MPM) and subjects with Past Asbestos Exposure (PAE). Methodology/Principal findings We investigated 23 MPM patients and 19 cancer-free subjects with past asbestos exposure (PAE). We screened 754 miRNAs in plasmatic EVs by OpenArray and f…

MesotheliomaMalePhysiologyPleural Neoplasmslcsh:MedicineBiochemistryLung and Intrathoracic TumorsBlood PlasmaDiagnostic MedicineGeneticsMedicine and Health SciencesCancer Detection and DiagnosisBiomarkers TumorHumansVesiclesNon-coding RNAlcsh:ScienceAgedBiology and life scienceslcsh:RCancers and NeoplasmsAsbestosCell BiologyMiddle AgedPrognosisGene regulationBody FluidsNucleic acidsMicroRNAsBloodOncologyRNAFemalelcsh:QGene expressionCellular Structures and OrganellesAnatomyBiomarkersResearch ArticlePLoS ONE
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