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Sökning: WFRF:(Ottander U)

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1.
  • Falconer, Henrik, et al. (författare)
  • Robot-assisted approach to cervical cancer (RACC) : An international multi-center, open-label randomized controlled trial
  • 2019
  • Ingår i: International Journal of Gynecological Cancer. - : Wiley-Blackwell. - 1048-891X .- 1525-1438. ; 29:6, s. 1072-1076
  • Tidskriftsartikel (refereegranskat)abstract
    • Background Radical hysterectomy with pelvic lymphadenectomy represents the standard treatment for early-stage cervical cancer. Results from a recent randomized controlled trial demonstrate that minimally invasive surgery is inferior to laparotomy with regards to disease-free and overall survival. Primary Objective To investigate the oncologic safety of robot-assisted surgery for early-stage cervical cancer as compared with standard laparotomy. Study Hypothesis Robot-assisted laparoscopic radical hysterectomy is non-inferior to laparotomy in regards to recurrence-free survival with the advantage of fewer post-operative complications and superior patient-reported outcomes. Trial Design Prospective, multi-institutional, international, open-label randomized clinical trial. Consecutive women with early-stage cervical cancer will be assessed for eligibility and subsequently randomized 1:1 to either robot-assisted laparoscopic surgery or laparotomy. Institutional review board approval will be required from all participating institutions. The trial is coordinated from Karolinska University Hospital, Sweden. Major Inclusion/Exclusion Criteria Women over 18 with cervical cancer FIGO (2018) stages IB1, IB2, and IIA1 squamous, adenocarcinoma, or adenosquamous will be included. Women are not eligible if they have evidence of metastatic disease, serious co-morbidity, or a secondary invasive neoplasm in the past 5 years. Primary Endpoint Recurrence-free survival at 5 years between women who underwent robot-assisted laparoscopic surgery versus laparotomy for early-stage cervical cancer. Sample Size The clinical non-inferiority margin in this study is defined as a 5-year recurrence-free survival not worsened by >7.5%. With an expected recurrence-free survival of 85%, the study needs to observe 127 events with a one-sided level of significance (α) of 5% and a power (1-β) of 80%. With 5 years of recruitment and 3 years of follow-up, the necessary number of events will be reached if the study can recruit a total of 768 patients. Estimated Dates for Completing Accrual and Presenting Results Trial launch is estimated to be May 2019 and the trial is estimated to close in May 2027 with presentation of data shortly thereafter. Trial Registration The trial is registered at ClinicalTrials.gov (NCT03719547).
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2.
  • Vinnars, Marie-Therese, et al. (författare)
  • Enhanced Th1 and inflammatory mRNA responses upregulate NK cell cytotoxicity and NKG2D ligand expression in human pre-eclamptic placenta and target it for NK cell attack
  • 2018
  • Ingår i: American Journal of Reproductive Immunology. - : John Wiley & Sons. - 1046-7408 .- 1600-0897. ; 80:1
  • Tidskriftsartikel (refereegranskat)abstract
    • ProblemPre-eclampsia (PE), a severe human pregnancy disorder, is associated with exaggerated systemic inflammation, enhanced cytokine production, and increased shedding of microvesicles leading to endothelial dysfunction, coagulopathy, and extensive placenta destruction. The cause of PE is still unclear. Evidence suggests that its origin lies in the placenta and that the maternal immune system is involved. A shift in cytokine production in PE pregnancy promotes NK cell activation, suggested to be important in PE pathogenesis. In line with this suggestion, we studied NK cell cytotoxicity in peripheral blood of PE patients and controls and the mRNA expression of cytokines and of the NKG2D receptor and its ligands MICA/B and ULBP1-3 in PE- and normal placenta. Method of studyThe cytotoxic capacity of peripheral blood NK cells was analyzed using K562 target cells. The cytokine mRNA profiles and the mRNA expression of the NKG2D receptor and its ligands MICA/B and ULBP 1-3 in PE placenta were assessed and compared to those in normal placenta using real-time quantitative RT-PCR. ResultsThe cytotoxicity of peripheral blood NK cells was upregulated in PE cases. Further, we found an enhanced inflammatory cytokine mRNA response combined with a dysregulated regulatory response and a significant mRNA overexpression of NKG2D receptor and its ligands MICA/B and ULBP in PE placenta. ConclusionThe destruction of chorionic villi observed in PE placenta might be conveyed by an enhanced local cytotoxic response through the NKG2D receptor-ligand pathway, which in turn might be promoted by an intense inflammatory response not counteracted by regulatory cytokine responses.
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  • Resultat 1-4 av 4

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