2021
Individual-oocyte transcriptomic analysis shows that genotoxic chemotherapy depletes human primordial follicle reserve in vivo by triggering proapoptotic pathways without growth activation
Titus S, Szymanska K, Musul B, Turan V, Taylan E, Garcia- Milian R, Mehta S, Oktay K. Individual-oocyte transcriptomic analysis shows that genotoxic chemotherapy depletes human primordial follicle reserve in vivo by triggering proapoptotic pathways without growth activation. Scientific Reports 2021, 11: 407. PMID: 33431979, PMCID: PMC7801500, DOI: 10.1038/s41598-020-79643-x.Peer-Reviewed Original ResearchMeSH KeywordsAdultAnimalsAntineoplastic Combined Chemotherapy ProtocolsApoptosisCyclophosphamideDNA DamageFemaleGene Expression ProfilingHeterograftsHumansMiceMice, Inbred NODMice, SCIDOocytesOogenesisOvarian FollicleOvarian ReserveOvarySignal TransductionSingle-Cell AnalysisTranscriptomeYoung AdultConceptsPrimordial follicle oocytesFollicle lossGrowth activationHuman ovarian xenograft modelPI3K/PTEN/AktFollicle oocytesDNA damagePI3K/PTEN/Akt pathwayOvarian reserve depletionPrimordial follicle reservePTEN/AKT pathwayIngenuity Pathway AnalysisOvarian xenograft modelPTEN/AKTSevere DNA damageExpression of AktGonadotoxic chemotherapyAnti-apoptotic Bcl2Early menopauseFollicle reserveTranscriptomic analysisCyclophosphamide injectionHuman ovaryPhosphorylation statusRNA sequencing
2019
BRCA-related ATM-mediated DNA double-strand break repair and ovarian aging
Turan V, Oktay K. BRCA-related ATM-mediated DNA double-strand break repair and ovarian aging. Human Reproduction Update 2019, 26: 43-57. PMID: 31822904, PMCID: PMC6935693, DOI: 10.1093/humupd/dmz043.Peer-Reviewed Original Research
2009
Stem cells and reproductive medicine.
Oktem O, Oktay K. Stem cells and reproductive medicine. Minerva Obstetrics And Gynecology 2009, 61: 247-52. PMID: 19745792.Peer-Reviewed Original Research
2001
Ovarian tissue cryopreservation and transplantation: preliminary findings and implications for cancer patients
Oktay K. Ovarian tissue cryopreservation and transplantation: preliminary findings and implications for cancer patients. Human Reproduction Update 2001, 7: 526-534. PMID: 11727860, DOI: 10.1093/humupd/7.6.526.Peer-Reviewed Original ResearchConceptsOvarian tissue cryopreservationTissue cryopreservationYoung womenFrozen-banked ovarian tissueBone marrow transplantationCancers of childrenAntral follicle developmentAggressive chemotherapyComplete remissionCancer treatment modalitiesMarrow transplantationBenign causesCancer patientsTreatment modalitiesTransplantation trialsFresh graftsXenograft studiesRodent studiesOocyte cryopreservationOvarian tissuePatientsFollicle developmentTransplantationCancer treatmentWomen
2000
Interaction of Extracellular Matrix and Activin-A in the Initiation of Follicle Growth in the Mouse Ovary1
Oktay K, Karlikaya G, Akman O, Ojakian G, Oktay M. Interaction of Extracellular Matrix and Activin-A in the Initiation of Follicle Growth in the Mouse Ovary1. Biology Of Reproduction 2000, 63: 457-461. PMID: 10906050, DOI: 10.1095/biolreprod63.2.457.Peer-Reviewed Original ResearchConceptsFollicle growth initiationFollicle developmentFollicle growthFollicle growth rateFollicle densityRecombinant human activinEarly follicle developmentEarly follicular developmentRole of activinAbsence of activinTotal folliclesFollicular growthExtracellular matrixFollicular developmentTreatment groupsMultilayer folliclesMouse ovariesActivin treatmentHuman activinPresence of lamininActivinExtracellular matrix componentsPrecise mechanismMiceFolliclesThe re-incarnation of an old question— clomid effect on oocyte and embryo?
Oktay K, Berkowitz P, Berkus M, Schenken R, Brzyski R. The re-incarnation of an old question— clomid effect on oocyte and embryo? Fertility And Sterility 2000, 74: 422. PMID: 10970170, DOI: 10.1016/s0015-0282(00)00663-4.Peer-Reviewed Original ResearchTransplantation of cryopreserved human ovarian tissue results in follicle growth initiation in SCID mice
Oktay K, Newton H, Gosden R. Transplantation of cryopreserved human ovarian tissue results in follicle growth initiation in SCID mice. Fertility And Sterility 2000, 73: 599-603. PMID: 10689020, DOI: 10.1016/s0015-0282(99)00548-8.Peer-Reviewed Original ResearchConceptsOvarian tissueSCID miceFrozen-thawed human ovarian tissueFrozen-thawed ovarian tissueAutologous ovarian transplantationFrozen-thawed graftsHuman ovarian tissueFollicle growth initiationLong-term survivalWeeks of graftingHuman primordial folliclesFollicle countOvarian transplantationImmunodeficiency miceMAIN OUTCOMEHealthy folliclesPrimordial folliclesAcademic centersAnimal studiesFollicle stageAdvanced folliclesFolliclesGraftMiceNecrotic cells
1998
Development of human primordial follicles to antral stages in SCID/hpg mice stimulated with follicle stimulating hormone.
Oktay K, Newton H, Mullan J, Gosden R. Development of human primordial follicles to antral stages in SCID/hpg mice stimulated with follicle stimulating hormone. Human Reproduction 1998, 13: 1133-1138. PMID: 9647533, DOI: 10.1093/humrep/13.5.1133.Peer-Reviewed Original ResearchConceptsWeeks of graftingSevere combined immunodeficiencyFollicle growthOvarian xenograftsAntral stageOestradiol levelsLong-term graftHuman ovarian xenograftsHuman follicle developmentHuman ovarian tissueOvarian follicular growthPreantral follicle growthLong-term graftingGranulosa cell layerHuman primordial folliclesCell nuclear antigenFSH administrationHpg miceKidney capsuleGonadotrophin stimulationRenal capsuleHuman ovaryImmunodeficient miceFollicular growthSmall follicles