2020
A novel arterial redox-specific machine learning-derived radiomic signature of perivascular adipose tissue predicts cardiac mortality from routine CCTA
Kotanidis C, Akawi N, Thomas S, Siddique M, Oikonomou E, Alashi A, Akoumianakis I, Antonopoulos A, Krasopoulos G, Sayeed R, Neubauer S, Channon K, Desai M, Antoniades C. A novel arterial redox-specific machine learning-derived radiomic signature of perivascular adipose tissue predicts cardiac mortality from routine CCTA. European Heart Journal 2020, 41: ehaa946.1372. DOI: 10.1093/ehjci/ehaa946.1372.Peer-Reviewed Original ResearchArterial oxidative stressMajor adverse cardiovascular eventsVascular redox stateInternal mammary arteryVascular oxidative stressCardiac riskArm 2Radiomics signatureOxidative stressArm 3Arm 1High-risk plaque featuresEpicardial adipose tissue volumeFat attenuation indexFuture cardiac riskRadiomic featuresAdverse cardiovascular eventsPerivascular adipose tissueCardiac risk predictionAdipose tissue volumeBritish Heart FoundationLucigenin-enhanced chemiluminescenceEx vivo quantificationLong-term riskAdipose tissue compositionInsulin-induced vascular redox dysregulation in human atherosclerosis is ameliorated by dipeptidyl peptidase 4 inhibition
Akoumianakis I, Badi I, Douglas G, Chuaiphichai S, Herdman L, Akawi N, Margaritis M, Antonopoulos AS, Oikonomou EK, Psarros C, Galiatsatos N, Tousoulis D, Kardos A, Sayeed R, Krasopoulos G, Petrou M, Schwahn U, Wohlfart P, Tennagels N, Channon KM, Antoniades C. Insulin-induced vascular redox dysregulation in human atherosclerosis is ameliorated by dipeptidyl peptidase 4 inhibition. Science Translational Medicine 2020, 12 PMID: 32350133, PMCID: PMC7212010, DOI: 10.1126/scitranslmed.aav8824.Peer-Reviewed Original ResearchConceptsDipeptidyl peptidase-4 inhibitorsCoronary artery bypass surgeryAggressive insulin treatmentInsulin treatmentCoronary atherosclerosisEndothelial functionAbnormal responseHigh-fat diet-fed ApoEOral dipeptidyl peptidase-4 inhibitorLong-term combination therapyHuman internal mammary arteryDipeptidyl peptidase-4 inhibitionHigher cardiac mortalityPeptidase-4 inhibitionVascular insulin responsesVascular redox stateArtery bypass surgeryInternal mammary arteryInsulin resistance statusNitric oxide bioavailabilityPeptidase-4 inhibitorsPlasma DPP4 activityVascular oxidative stressRecent clinical trialsInsulin-sensitizing effects
2019
Adipose tissue–derived WNT5A regulates vascular redox signaling in obesity via USP17/RAC1-mediated activation of NADPH oxidases
Akoumianakis I, Sanna F, Margaritis M, Badi I, Akawi N, Herdman L, Coutinho P, Fagan H, Antonopoulos AS, Oikonomou EK, Thomas S, Chiu AP, Chuaiphichai S, Kotanidis CP, Christodoulides C, Petrou M, Krasopoulos G, Sayeed R, Lv L, Hale A, Naeimi Kararoudi M, McNeill E, Douglas G, George S, Tousoulis D, Channon KM, Antoniades C. Adipose tissue–derived WNT5A regulates vascular redox signaling in obesity via USP17/RAC1-mediated activation of NADPH oxidases. Science Translational Medicine 2019, 11 PMID: 31534019, PMCID: PMC7212031, DOI: 10.1126/scitranslmed.aav5055.Peer-Reviewed Original ResearchMeSH KeywordsAdaptor Proteins, Signal TransducingAdipose TissueAnimalsArteriesAtherosclerosisBlood VesselsCell MovementEndopeptidasesEnzyme ActivationLigandsMice, Inbred C57BLMuscle, Smooth, VascularMyocytes, Smooth MuscleNADPH OxidasesObesityOxidantsOxidation-ReductionRac1 GTP-Binding ProteinSignal TransductionVascular DiseasesWnt-5a ProteinConceptsAdipose tissueArterial wallFrizzled-related protein 5Oxidative stressArterial oxidative stressVascular disease pathogenesisNADPH oxidaseCoronary plaque progressionCoronary artery diseaseVascular oxidative stressVascular smooth muscle cellsFrizzled-2Smooth muscle cellsVascular redoxArtery diseaseHuman arterial wallPlasma concentrationsPlaque progressionParacrine mechanismsObesityParacrine effectsDisease pathogenesisMuscle cellsTranslational implicationsVascular signaling
2017
Predictive value of telomere length on outcome following acute myocardial infarction: evidence for contrasting effects of vascular vs. blood oxidative stress
Margaritis M, Sanna F, Lazaros G, Akoumianakis I, Patel S, Antonopoulos AS, Duke C, Herdman L, Psarros C, Oikonomou EK, Shirodaria C, Petrou M, Sayeed R, Krasopoulos G, Lee R, Tousoulis D, Channon KM, Antoniades C. Predictive value of telomere length on outcome following acute myocardial infarction: evidence for contrasting effects of vascular vs. blood oxidative stress. European Heart Journal 2017, 38: 3094-3104. PMID: 28444175, PMCID: PMC5837455, DOI: 10.1093/eurheartj/ehx177.Peer-Reviewed Original ResearchConceptsPeripheral blood mononuclear cellsAcute myocardial infarctionVascular smooth muscle cellsVascular oxidative stressSaphenous veinMyocardial infarctionOxidative stressPredictive valueRecent acute myocardial infarctionCoronary artery bypassBlood mononuclear cellsClinical predictive valueBlood oxidative stressSmooth muscle cellsFunctional genetic polymorphismsEffects of vascularTissue-specific biomarkersArtery bypassProspective cohortConsecutive patientsClinical outcomesVascular factorsPost-AMIMononuclear cellsArtery segments