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Träfflista för sökning "WFRF:(Schroder W.) srt2:(2010-2014)"

Sökning: WFRF:(Schroder W.) > (2010-2014)

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1.
  • Carlsson, Sigrid, et al. (författare)
  • Predictive Value of Four Kallikrein Markers for Pathologically Insignificant Compared With Aggressive Prostate Cancer in Radical Prostatectomy Specimens: Results From the European Randomized Study of Screening for Prostate Cancer Section Rotterdam
  • 2013
  • Ingår i: European Urology. - : Elsevier BV. - 1873-7560 .- 0302-2838. ; 64:5, s. 693-699
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Treatment decisions can be difficult in men with low-risk prostate cancer (PCa). Objective: To evaluate the ability of a panel of four kallikrein markers in blood-total prostate-specific antigen (PSA), free PSA, intact PSA, and kallikrein-related peptidase 2-to distinguish between pathologically insignificant and aggressive disease on pathologic examination of radical prostatectomy (RP) specimens as well as to calculate the number of avoidable surgeries. Design, setting, and participants: The cohort comprised 392 screened men participating in rounds 1 and 2 of the Rotterdam arm of the European Randomized Study of Screening for Prostate Cancer. Patients were diagnosed with PCa because of an elevated PSA >= 3.0 ng/ml and were treated with RP between 1994 and 2004. Outcome measurements and statistical analysis: We calculated the accuracy (area under the curve [AUC]) of statistical models to predict pathologically aggressive PCa (pT3-T4, extracapsular extension, tumor volume >0.5 cm(3), or any Gleason grade >= 4) based on clinical predictors (age, stage, PSA, biopsy findings) with and without levels of four kallikrein markers in blood. Results and limitations: A total of 261 patients (67%) had significant disease on pathologic evaluation of the RP specimen. While the clinical model had good accuracy in predicting aggressive disease, reflected in a corrected AUC of 0.81, the four kallikrein markers enhanced the base model, with an AUC of 0.84 (p < 0.0005). The model retained its ability in patients with low-risk and very-low-risk disease and in comparison with the Steyerberg nomogram, a published prediction model. Clinical application of the model incorporating the kallikrein markers would reduce rates of surgery by 135 of 1000 patients overall and 110 of 334 patients with pathologically insignificant disease. A limitation of the present study is that clinicians may be hesitant to make recommendations against active treatment on the basis of a statistical model. Conclusions: Our study provided proof of principle that predictions based on levels of four kallikrein markers in blood distinguish between pathologically insignificant and aggressive disease after RP with good accuracy. In the future, clinical use of the model could potentially reduce rates of immediate unnecessary active treatment. (c) 2013 European Association of Urology. Published by Elsevier B.V. All rights reserved.
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5.
  • Zhao, R., et al. (författare)
  • Cloud partitioning of isocyanic acid (HNCO) and evidence of secondary source of HNCO in ambient air
  • 2014
  • Ingår i: Geophysical Research Letters. - 0094-8276 .- 1944-8007. ; 41:19, s. 6962-6969
  • Tidskriftsartikel (refereegranskat)abstract
    • Although isocyanic acid (HNCO) may cause a variety of health issues via protein carbamylation and has been proposed as a key compound in smoke-related health issues, our understanding of the atmospheric sources and fate of this toxic compound is currently incomplete. To address these issues, a field study was conducted at Mount Soledad, La Jolla, CA, to investigate partitioning of HNCO to clouds and fogs using an Acetate Chemical Ionization Mass Spectrometer coupled to a ground-based counterflow virtual impactor. The first field evidence of cloud partitioning of HNCO is presented, demonstrating that HNCO is dissolved in cloudwater more efficiently than expected based on the effective Henry's law solubility. The measurements also indicate evidence for a secondary, photochemical source of HNCO in ambient air at this site.
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