2017
Dynamics of Base Excision Repair at the Maternal–Fetal Interface in Pregnancies Complicated by Preeclampsia
Tadesse S, Norwitz NG, Guller S, Arcuri F, Toti P, Norwitz ER, Kidane D. Dynamics of Base Excision Repair at the Maternal–Fetal Interface in Pregnancies Complicated by Preeclampsia. Reproductive Sciences 2017, 24: 856-864. PMID: 27707956, DOI: 10.1177/1933719116670519.Peer-Reviewed Original ResearchConceptsMaternal-fetal interfaceOxidative stressNormotensive controlsPlacental tissueHypoxia/reperfusion (H/R) modelPlacental endothelial dysfunctionPlacentas of womenHealthy control subjectsApyrimidinic endonuclease 1PE placental tissuesPregnancy ComplicatedEndothelial dysfunctionPreeclamptic womenPerinatal mortalityReperfusion modelControl subjectsDecidual cellsPathological basisVivo comparative studyPreeclampsiaMaternal cellsFetal cellsAPE1 expressionSignificant increaseWomen
2016
Inflammatory processes are specifically enhanced in endothelial cells by placental-derived TNF-α: Implications in preeclampsia (PE)
Shaw J, Tang Z, Schneider H, Saljé K, Hansson SR, Guller S. Inflammatory processes are specifically enhanced in endothelial cells by placental-derived TNF-α: Implications in preeclampsia (PE). Placenta 2016, 43: 1-8. PMID: 27324092, DOI: 10.1016/j.placenta.2016.04.015.Peer-Reviewed Original ResearchConceptsPro-inflammatory cytokine secretionMaternal perfusateCytokine secretionEndothelial dysfunctionActivation markersEndothelial cellsTNF-α blocking antibodyDual perfusion modelMaternal endothelial dysfunctionPro-inflammatory cytokinesMCP-1 secretionTNF-α actionEndothelial cell linePlacental pathophysiologyEndothelial activationIL-6IL-8Maternal endotheliumInflammatory processDual perfusionMaternal circulationBlocking antibodiesPreeclampsiaTNFPerfusion model
2014
Syncytiotrophoblast Vesicles Show Altered micro-RNA and Haemoglobin Content after Ex-vivo Perfusion of Placentas with Haemoglobin to Mimic Preeclampsia
Cronqvist T, Saljé K, Familari M, Guller S, Schneider H, Gardiner C, Sargent IL, Redman CW, Mörgelin M, Åkerström B, Gram M, Hansson SR. Syncytiotrophoblast Vesicles Show Altered micro-RNA and Haemoglobin Content after Ex-vivo Perfusion of Placentas with Haemoglobin to Mimic Preeclampsia. PLOS ONE 2014, 9: e90020. PMID: 24587192, PMCID: PMC3937405, DOI: 10.1371/journal.pone.0090020.Peer-Reviewed Original ResearchConceptsPathology of preeclampsiaCell-free HbMiR-517bMiR-517aSyncytiotrophoblast vesiclesExtracellular free hemoglobinPerfusion of placentaEx vivo perfusion systemMicro-RNAsMaternal circulationMimic preeclampsiaMaternal sidePerfusion mediumFree hemoglobinHuman placentaPerfusion phaseSurface markersPlacentaMiR-141Hemoglobin contentPerfusionPerfusion systemPreeclampsiaHemoglobinQuantitative PCRIn Vivo and In Vitro Evidence for Placental DNA Damage in Preeclampsia
Tadesse S, Kidane D, Guller S, Luo T, Norwitz NG, Arcuri F, Toti P, Norwitz ER. In Vivo and In Vitro Evidence for Placental DNA Damage in Preeclampsia. PLOS ONE 2014, 9: e86791. PMID: 24466242, PMCID: PMC3899334, DOI: 10.1371/journal.pone.0086791.Peer-Reviewed Original ResearchConceptsDecidual stromal cellsCytotrophoblast cellsMaternal decidual stromal cellsReactive oxygen speciesPlacental oxidative stressFetal-maternal interfaceDNA damagePE placental tissuesAnti-oxidant defensesMultisystem diseasePregnant womenPE placentasFetal sideMaternal deciduaOxidative DNA damagePreeclampsiaPlacental tissueNormal placentaStromal cellsPlacentaOxidative stressVitro EvidenceRepair responseDNA damage/repair responseΓH2AX foci
2010
Protein composition of microparticles shed from human placenta during placental perfusion: Potential role in angiogenesis and fibrinolysis in preeclampsia
Guller S, Tang Z, Ma YY, Di Santo S, Sager R, Schneider H. Protein composition of microparticles shed from human placenta during placental perfusion: Potential role in angiogenesis and fibrinolysis in preeclampsia. Placenta 2010, 32: 63-69. PMID: 21074265, PMCID: PMC3762591, DOI: 10.1016/j.placenta.2010.10.011.Peer-Reviewed Original ResearchConceptsPlasminogen activator inhibitorMaternal perfusateSFlt-1Maternal endothelial cell dysfunctionFms-like tyrosine kinasePathophysiology of preeclampsiaMaternal-fetal interfaceEndothelial cell dysfunctionAnti-angiogenic actionFollowing relative levelsPlacental damagePlacental perfusionMaternal serumNormal pregnancyPlacental pathophysiologyAnnexin V bindingSyncytiotrophoblast microparticlesDual perfusionAngiogenic balanceCell dysfunctionMaternal bloodPreeclampsiaActivator inhibitorCytometric analysisLevel of expression
2009
Role of the syncytium in placenta-mediated complications of preeclampsia
Guller S. Role of the syncytium in placenta-mediated complications of preeclampsia. Thrombosis Research 2009, 124: 389-392. PMID: 19535132, PMCID: PMC2764997, DOI: 10.1016/j.thromres.2009.05.016.Peer-Reviewed Original ResearchConceptsPlasminogen activator inhibitor-1Fms-like tyrosine kinase-1Complications of preeclampsiaIntrauterine growth restrictionPathophysiology of preeclampsiaTyrosine kinase-1Immune cell functionAnti-angiogenic factorsActivator inhibitor-1Potential protective actionMaternal hemostasisSoluble endoglinEndothelial functionReperfusion injuryMaternal endotheliumMaternal mortalityRelease of microparticlesGrowth restrictionMaternal bloodPreeclampsiaSensitive markerMajor causeInhibitor-1Protective actionReactive oxygen species
2008
The Placental Syncytium and the Pathophysiology of Preeclampsia and Intrauterine Growth Restriction
Guller S, Y. Y, Fu H, Krikun G, Abrahams VM, Mor G. The Placental Syncytium and the Pathophysiology of Preeclampsia and Intrauterine Growth Restriction. Annals Of The New York Academy Of Sciences 2008, 1127: 129-133. PMID: 18443340, PMCID: PMC3671376, DOI: 10.1196/annals.1434.015.Peer-Reviewed Original ResearchConceptsIntrauterine growth restrictionPathophysiology of preeclampsiaGrowth restrictionPlacental syncytiumFms-like tyrosine kinase-1Complications of pregnancyPlasminogen activator inhibitor-1Tyrosine kinase-1Activator inhibitor-1Release of factorsPlacental damageSoluble endoglinEndothelium dysfunctionLaser capture microdissectionMaternal bloodAntiangiogenic factorsPreeclampsiaFas ligandWestern blottingInhibitor-1Reactive oxygen speciesCapture microdissectionPregnancyPathophysiologyKinase 1
2006
Differential Release of Plasminogen Activator Inhibitors (PAIs) During Dual Perfusion of Human Placenta: Implications in Preeclampsia
Guller S, Ma Y, Malek A, Di Santo S, Schneider H. Differential Release of Plasminogen Activator Inhibitors (PAIs) During Dual Perfusion of Human Placenta: Implications in Preeclampsia. Placenta 2006, 28: 278-285. PMID: 16820203, DOI: 10.1016/j.placenta.2006.05.005.Peer-Reviewed Original ResearchConceptsIntrauterine growth restrictionPAI-1 levelsPlasminogen activator inhibitorTotal PAI-1 levelsMaternal perfusateDual perfusionTime-dependent increaseReactive oxygen speciesRelease of PAIActivator inhibitorIntervillous fibrin depositionActive PAI-1 levelsSignificant time-dependent increasePAI-2 levelsPAI-1 releaseHuman term placentaPlacental tissue extractsAberrant fibrinolysisPlacental infarctionMaternal serumFibrin depositionGrowth restrictionIntervillous spacePreeclampsiaTerm placentaFirst-trimester trophoblast cell model gene response to hypoxia
Koklanaris N, Nwachukwu JC, Huang SJ, Guller S, Karpisheva K, Garabedian M, Lee MJ. First-trimester trophoblast cell model gene response to hypoxia. American Journal Of Obstetrics And Gynecology 2006, 194: 687-693. PMID: 16522398, DOI: 10.1016/j.ajog.2006.01.067.Peer-Reviewed Original ResearchConceptsReverse transcriptase-polymerase chain reactionQuantitative reverse transcriptase-polymerase chain reactionTranscriptase-polymerase chain reactionPolymerase chain reactionHypoxia-responsive genesHTR-8/SVneoChain reactionCell linesTrophoblast cell linePregnancy outcomesEarly pregnancyMotility/migrationHypoxic environmentTotal RNAHypoxiaPlacentationMicroarray studiesGene responsesPreeclampsiaPregnancy