2020
NLRP3 inflammasome function and pyroptotic cell death in human placental Hofbauer cells
Abrahams VM, Tang Z, Mor G, Guller S. NLRP3 inflammasome function and pyroptotic cell death in human placental Hofbauer cells. Journal Of Reproductive Immunology 2020, 142: 103214. PMID: 33152658, PMCID: PMC7770077, DOI: 10.1016/j.jri.2020.103214.Peer-Reviewed Original ResearchConceptsHofbauer cellsCaspase-1 activationIL-1β processingIL-1βInflammasome activationFetal inflammatory response syndromeSubsequent pregnancy complicationsInflammatory response syndromeCell deathNLRP3 inflammasome activationInterleukin-1 betaIL-1β secretionInhibition of P2X7Human term placentaGasdermin D cleavageNLRP3 knockdownPlacental inflammationPyroptotic cell deathFetal inflammationHistologic chorioamnionitisPregnancy complicationsResponse syndromeNLRP3 inflammasomeProtein/gene expressionInflammatory form
2012
Glucocorticoids Enhance CD163 Expression in Placental Hofbauer Cells
Tang Z, Niven-Fairchild T, Tadesse S, Norwitz ER, Buhimschi CS, Buhimschi IA, Guller S. Glucocorticoids Enhance CD163 Expression in Placental Hofbauer Cells. Endocrinology 2012, 154: 471-482. PMID: 23142809, PMCID: PMC3529384, DOI: 10.1210/en.2012-1575.Peer-Reviewed Original ResearchConceptsHofbauer cellsGC treatmentGC administrationCD163 expressionDEX treatmentCD68 mRNASpontaneous preterm birthMacrophage marker genesPlacental explant culturesAntiinflammatory M2 macrophagesHuman term placentaExpression of FRPreterm deliveryPreterm birthCD163 mRNAM2 macrophagesReceptor mRNAGC actionSynthetic GCFetal capillariesTerm placentaPlacental fibroblastsFlow cytometryCD163 proteinFetal macrophages
2011
Isolation of Hofbauer Cells from Human Term Placentas with High Yield and Purity
Tang Z, Tadesse S, Norwitz E, Mor G, Abrahams VM, Guller S. Isolation of Hofbauer Cells from Human Term Placentas with High Yield and Purity. American Journal Of Reproductive Immunology 2011, 66: 336-348. PMID: 21545365, PMCID: PMC3154981, DOI: 10.1111/j.1600-0897.2011.01006.x.Peer-Reviewed Original ResearchConceptsHofbauer cellsHuman term placentaTerm placentaComplications of pregnancyCell typesMacrophage functionPhagocytotic activityFlow cytometryVillus functionConsensus methodologyVacuolated appearancePhagocytosis assaysPlacentaPercoll gradientCTFuture studiesFibroblastsHBCCellsDaysHigh levelsComplicationsCulture mediumPregnancyMacrophages
2007
Cell Type-specific Expression and Function of Toll-like Receptors 2 and 4 in Human Placenta: Implications in Fetal Infection
Ma Y, Krikun G, Abrahams VM, Mor G, Guller S. Cell Type-specific Expression and Function of Toll-like Receptors 2 and 4 in Human Placenta: Implications in Fetal Infection. Placenta 2007, 28: 1024-1031. PMID: 17588655, PMCID: PMC2064901, DOI: 10.1016/j.placenta.2007.05.003.Peer-Reviewed Original ResearchConceptsInnate immune responseIL-8 levelsToll-like receptorsTLR-4Immune responseTLR-2TLR functionTerm placentaToll-like receptor 2Endothelial cellsAdverse fetal outcomesTLR-2 expressionMaternal-fetal interfacePathogen-associated molecular patternsHuman term placentaCell type-specific expressionGram-negative bacterial lipopolysaccharideFetal outcomesPlacental infectionTLR expressionFetal infectionLPS treatmentMajor cell typesImmunohistochemical analysisStem villi
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 placenta
2004
Differential Effects of Lipopolysaccharide and Thrombin on Interleukin‐8 Expression in Syncytiotrophoblasts and Endothelial Cells: Implications for Fetal Survival
MA Y, KADNER SS, GULLER S. Differential Effects of Lipopolysaccharide and Thrombin on Interleukin‐8 Expression in Syncytiotrophoblasts and Endothelial Cells: Implications for Fetal Survival. Annals Of The New York Academy Of Sciences 2004, 1034: 236-244. PMID: 15731315, DOI: 10.1196/annals.1335.025.Peer-Reviewed Original ResearchConceptsCytokine expressionEndothelial cellsFetal survivalInfection-associated changesPlacental cytokine expressionTissue factor-initiated blood coagulationIL-8 levelsInterleukin-8 levelsAnti-inflammatory steroidsMaintenance of pregnancyIL-8 expressionIL-8 mRNAInterleukin-8 expressionEffect of thrombinHuman umbilical vein endothelial cellsHuman term placentaUmbilical vein endothelial cellsVein endothelial cellsCytokine responsesCytokine productionProinflammatory processesIL-8Inflammatory responseLPS treatmentIntervillous space
2003
Glucocorticoid Enhances Transforming Growth Factor-β Effects on Extracellular Matrix Protein Expression in Human Placental Mesenchymal Cells1
Lee MJ, Ma Y, LaChapelle L, Kadner SS, Guller S. Glucocorticoid Enhances Transforming Growth Factor-β Effects on Extracellular Matrix Protein Expression in Human Placental Mesenchymal Cells1. Biology Of Reproduction 2003, 70: 1246-1252. PMID: 14681196, DOI: 10.1095/biolreprod.103.021956.Peer-Reviewed Original ResearchConceptsPlacental mesenchymal cellsIntrauterine growth restrictionFFN levelsProtein expressionCol IV expressionInteraction of glucocorticoidsDose-dependent mannerHuman term placentaFibronectin protein levelsExtracellular matrix protein expressionUncomplicated pregnanciesPolymerase chain reaction analysisReal-time polymerase chain reaction analysisGrowth restrictionDEX treatmentChain reaction analysisECM proteinsPlacental villiTerm placentaECM protein expressionCol IIIPlacental architectureMatrix protein expressionDexamethasoneGlucocorticoids
1999
Steroid Regulation of Human Placental Integrins: Suppression ofα 2 Integrin Expression in Cytotrophoblasts by Glucocorticoids1
Ryu J, Majeska R, Ma Y, LaChapelle L, Guller S. Steroid Regulation of Human Placental Integrins: Suppression ofα 2 Integrin Expression in Cytotrophoblasts by Glucocorticoids1. Endocrinology 1999, 140: 3904-3908. DOI: 10.1210/en.140.9.3904.Peer-Reviewed Original ResearchExtracellular matrix ligandsHuman cytotrophoblastsControl levelsMessenger RNATreatment of cytotrophoblastsMRNA levelsIntegrin subunitsCell surface expressionHuman term placentaExtracellular matrixDays of treatmentHuman pregnancyExpression of collagenHeterodimeric transmembrane glycoproteinsTerm placentaCytotrophoblastDexamethasone effectDown-regulated expressionHuman placentaSurface expressionCellular adhesion receptorsDexamethasoneGC treatmentGlucocorticoidIntegrin levels
1993
Glucocorticoid suppression of human placental fibronectin expression: implications in uterine-placental adherence
Guller S, Wozniak R, Krikun G, Burnham J, Kaplan P, Lockwood C. Glucocorticoid suppression of human placental fibronectin expression: implications in uterine-placental adherence. Endocrinology 1993, 133: 1139-1146. DOI: 10.1210/en.133.3.1139.Peer-Reviewed Original ResearchTreatment of cytotrophoblastsIncreased levels of glucocorticoidsEffects of glucocorticoidsHuman term placentaLevels of glucocorticoidsPlacental functionExtracellular matrix protein synthesisHuman parturitionAssociated with parturitionTerm placentaMultiple extracellular matrix proteinsPlacental fibronectinDexamethasone treatmentCytotrophoblastMatrix protein synthesisDexamethasoneGlucocorticoidExtracellular matrix proteinsCell-associated materialImmunoprecipitation studiesOnfFNLevels of total proteinMessenger RNANorthern blottingOncofetal epitope