0000000000336582

AUTHOR

Alberto Allegra

showing 6 related works from this author

Deregulation of TLR4 signaling pathway characterizes Bicuspid Aortic valve syndrome

2019

AbstractBicuspid aortic valve (BAV) disease is recognized to be a syndrome with a complex and multifaceted pathophysiology. Its progression is modulated by diverse evolutionary conserved pathways, such as Notch-1 pathway. Emerging evidence is also highlighting the key role of TLR4 signaling pathway in the aortic valve pathologies and their related complications, such as sporadic ascending aorta aneurysms (AAA). Consistent with these observations, we aimed to evaluate the role of TLR4 pathway in both BAV disease and its common complication, such as AAA. To this aim, 70 subjects with BAV (M/F 50/20; mean age: 58.8 ± 14.8 years) and 70 subjects with tricuspid aortic valve (TAV) (M/F 35/35; mea…

Male0301 basic medicineAortic valveBicuspid Aortic valve syndromeHeart Valve Diseaseslcsh:MedicineDisease0302 clinical medicineBicuspid aortic valveBicuspid Aortic Valve DiseaseTLR4lcsh:ScienceAortaAged 80 and overMultidisciplinarySyndromeMiddle AgedPathophysiologymedicine.anatomical_structureAortic Valvecardiovascular systemCardiologyFemaleSignal Transductionmedicine.medical_specialtyCardiologyArticleProinflammatory cytokine03 medical and health sciencesmedicine.arteryInternal medicineAscending aortamedicineHumansbicuspid valveAgedbicuspid valve; TLR4; aortic diseaseBAV TLR4 AAATumor Necrosis Factor-alphabusiness.industryInterleukinslcsh:RSettore MED/23 - Chirurgia CardiacaValvular diseaseaortic diseasemedicine.diseaseToll-Like Receptor 4030104 developmental biologyTLR4lcsh:QbusinessComplication030217 neurology & neurosurgeryScientific Reports
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Deregulation of Notch1 pathway and circulating endothelial progenitor cell (EPC) number in patients with bicuspid aortic valve with and without ascen…

2018

AbstractBicuspid aortic valve (BAV) is frequently associated with the development of ascending aortic aneurysm, even if the underlying mechanisms remain to be clarified. Here, we investigated if a deregulation of Notch1 signaling pathway and endothelial progenitor cells (EPCs) number is associated with BAV disease and an early ascending aortic aneurysm (AAA) onset. For this purpose, 70 subjects with BAV (M/F 50/20; mean age: 58.8 ± 14.8 years) and 70 subjects with tricuspid aortic valve (TAV) (M/F 35/35; mean age: 69.1 ± 12.8 years) and AAA complicated or not, were included. Interestingly, patients with AAA showed a significant increase in circulating Notch1 levels and EPC number than subje…

Male0301 basic medicineAortic valveNotch1 signaling pathwatHeart Valve Diseases030204 cardiovascular system & hematologyAortic aneurysm0302 clinical medicineBicuspid aortic valveBicuspid Aortic Valve DiseaseNotch Signaling Pathwaycirculating EPC populationsReceptor Notch1ReceptorAortaEndothelial Progenitor CellsAged 80 and overMultidisciplinaryQRMiddle AgedAortic Aneurysmmedicine.anatomical_structureAortic Valvecardiovascular systemCardiologyMedicineFemaleTricuspid ValveSignal TransductionAdultmedicine.medical_specialtyBicuspid aortic valveEndothelial Progenitor Cells (EPC)ScienceNotch signaling pathwayBicuspid Aortic Valve (BAV)Endothelial progenitor cellArticleBicuspid aortic valve; Notch1 signaling pathwat; ascending aortic aneurysm03 medical and health sciencesascending aortic aneurysmInternal medicinemedicineHumansIn patientcardiovascular diseasesProgenitor cellNotch 1 signaling pathwayAgedTricuspid Aortic Valve (TAV)Ascending Aorta Aneurysm (AAA)business.industrySettore MED/23 - Chirurgia Cardiacamedicine.disease030104 developmental biologybusiness
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Penn classification in acute aortic dissection patients

2016

Objective The objective of this study was to evaluate the effectiveness of the Penn classification in predicting in-hospital mortality after surgery in acute type A aortic dissection patients. Methods We evaluated 58 patients (42 men and 16 women; mean age 62.17 ± 10.6 years) who underwent emergency surgery for acute type A aortic dissection between September 2003 and June 2010 in our department. We investigated the correlation between the pre-operative malperfusion and in-hospital outcome after surgery. Results Twenty-eight patients (48%) were Penn class Aa (absence of branch vessel malperfusion or circulatory collapse), 11 (19%) were Penn class Ab (branch vessel malperfusion with ischaemi…

MaleType A dissection Stanford classification DeBakey classification Penn classificationMyocardial IschemiaRisk AssessmentOutcome Assessment (Health Care)Outcome Assessment Health CarePreoperative CareStanford classificationHumansSettore MED/05 - Patologia ClinicaHospital MortalityAgedType A dissection – Stanford classification – DeBakey classification – Penn classificationPenn classificationSettore MED/23 - Chirurgia CardiacaShockGeneral MedicineMiddle AgedPrognosisAneurysmDeBakey classification; Penn classification; Stanford classification; Type A dissection; Aged; Female; Hospital Mortality; Humans; Italy; Male; Middle Aged; Myocardial Ischemia; Outcome Assessment (Health Care); Preoperative Care; Prognosis; Risk Assessment; Shock; Vascular Surgical Procedures; Aneurysm Dissecting; Aortic AneurysmAortic AneurysmSettore MED/23Aortic DissectionItalyDeBakey classificationType A dissectionFemaleCardiology and Cardiovascular MedicineVascular Surgical ProceduresDissecting
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Associations of rs3918242 and rs2285053 MMP-9 and MMP-2 polymorphisms with the risk, severity, and short- and long-term complications of degenerative…

2016

Abstract Background Degenerative forms of mitral valve diseases (MVDs) are very complex pathologies. Thus, it is difficult to make generalizations about the disease pathways or genetic risk factors contributing to these diseases. However, a key role of metalloproteinases (MMPs) in their pathophysiology is emerging. Thus, we performed for the first time a perspective study to assess eventual associations of some functional single nucleotide polymorphisms (SNPs) in MMP-2 and MMP-9 genes with the MVD risk, symptom severity, and short- and long-term (4.8 years) complications. Materials and methods For this purpose, 90 patients and two control groups were genotyped for rs3918242, rs243865, and r…

MalePathologyHeart Valve DiseasesDisease030204 cardiovascular system & hematologyMatrix metalloproteinasers3918242 rs243865 rs2285053 MMP-2 and MMP-9 gene SNPDegenerative forms of mitral valve diseases; Management and outcome; Metalloproteinases; rs3918242 rs243865 rs2285053 MMP-2 and MMP-9 gene SNPs; Aged; Cohort Studies; Female; Genetic Predisposition to Disease; Genotype; Heart Valve Diseases; Humans; Male; Matrix Metalloproteinase 2; Matrix Metalloproteinase 9; Middle Aged; Mitral Valve; Prospective Studies; Risk Factors; Polymorphism Single Nucleotide0403 veterinary scienceCohort Studies0302 clinical mediciners2285053 MMP-2 and MMP-9 gene SNPsRisk FactorsGenotypeManagement and outcomeNatriuretic peptideProspective StudiesProspective cohort studyMVDSMetalloproteinaseDegenerative forms of mitral valve diseases04 agricultural and veterinary sciencesGeneral MedicineSingle NucleotideMiddle AgedMetalloproteinasesPathophysiologyMatrix Metalloproteinase 9Matrix Metalloproteinase 2Mitral ValveFemalers3918242Cardiology and Cardiovascular MedicineDegenerative forms of mitral valve diseasemedicine.medical_specialtyGenotype040301 veterinary sciencesmedicine.drug_class2734Single-nucleotide polymorphismDegenerative forms of mitral valve diseases; Management and outcome; Metalloproteinases; rs3918242 rs243865 rs2285053 MMP-2 and MMP-9 gene SNPs; Cardiology and Cardiovascular Medicine; 2734Polymorphism Single NucleotidePathology and Forensic Medicine03 medical and health sciencesInternal medicinemedicineHumansGenetic Predisposition to Diseasers243865PolymorphismAgedbusiness.industrySettore MED/23 - Chirurgia Cardiacabusiness
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A Typical Immune T/B Subset Profile Characterizes Bicuspid Aortic Valve: In an Old Status?

2018

Bicuspid valve disease is associated with the development of thoracic aortic aneurysm. The molecular mechanisms underlying this association still need to be clarified. Here, we evaluated the circulating levels of T and B lymphocyte subsets associated with the development of vascular diseases in patients with bicuspid aortic valve or tricuspid aortic valve with and without thoracic aortic aneurysm. We unveiled that the circulating levels of the MAIT, CD4+IL−17A+, and NKT T cell subsets were significantly reduced in bicuspid valve disease cases, when compared to tricuspid aortic valve cases in either the presence or the absence of thoracic aortic aneurysm. Among patients with tricuspid aortic…

Male0301 basic medicineAortic valveAgingT-LymphocytesLymphocyteHeart Valve Diseases030204 cardiovascular system & hematologyBiochemistryImmunoglobulin D0302 clinical medicineBicuspid aortic valveBicuspid Aortic Valve DiseaseBicuspid aortic valve aneurysm B cellsb-cellsnotch1Invariant t-cells; aneurysm formation; angiotensin-ii; signaling pathway; genetic-variants; apoptotic cells; b-cells; mechanisms; mutations; notch1B-Lymphocytesmechanismsbiologylcsh:Cytologyhemic and immune systemsGeneral MedicineMiddle Agedmedicine.anatomical_structureAortic ValveCardiologycardiovascular systemFemaleResearch Articlesignaling pathwaymedicine.medical_specialtycongenital hereditary and neonatal diseases and abnormalitiesaneurysm formationInvariant t-cellsArticle SubjectBicuspid aortic valveT cellNaive B cellchemical and pharmacologic phenomenaThoracic aortic aneurysm03 medical and health sciencesBicuspid valveInternal medicinemedicineHumansSettore MED/05 - Patologia Clinicacardiovascular diseaseslcsh:QH573-671angiotensin-iigenetic-variantsB cellsbusiness.industrySettore MED/23 - Chirurgia Cardiacaapoptotic cellsCell Biologymutationsmedicine.disease030104 developmental biologybiology.proteinaneurysmbusinessA Typical Immune T/B Subset Profile Bicuspid Aortic Valve
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The close link between the fetal programming imprinting and neurodegeneration in adulthood: The key role of “hemogenic endothelium” programming

2021

The research on neurodegenerative diseases (NeuroDegD) has been traditionally focused on later life stages. There is now an increasing evidence, that they may be programmed during early development. Here, we propose that NeuroDegD are the result of the complex process of imprinting on fetal hemogenic endothelium, from which the microglial cells make to origin. The central role of placenta and epigenetic mechanisms (methylation of DNA, histone modifications and regulation by non-coding RNAs) in mediating the short and long-term effects has been also described. Precisely, it reports their role in impacting plasticity and memory of microglial cells. In addition, we also underline the necessity…

0301 basic medicineAgingHemangioblastsCell PlasticityRisk AssessmentEpigenesis GeneticFetal DevelopmentMolecular Imprinting03 medical and health sciences0302 clinical medicineEpigenetic factors as biomarkers Sex dimorphism Fetal developmental programming Hemogenic endothelium Microglia plasticity and memory Neurodegenerative diseasesmedicineHumansSettore MED/05 - Patologia ClinicaEpigeneticsFetal programmingImprinting (organizational theory)Hemogenic endotheliumSex CharacteristicsBiological Variation Individualbiologybusiness.industryNeurodegenerationGene Expression Regulation DevelopmentalNeurodegenerative Diseasesmedicine.diseaseLife stage030104 developmental biologyHistonePrenatal stressbiology.proteinMicrogliabusinessNeuroscienceBiomarkers030217 neurology & neurosurgeryDevelopmental BiologyMechanisms of Ageing and Development
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