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Search: WFRF:(Parker B.)

  • Result 691-700 of 763
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691.
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693.
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695.
  • Nilsson, S., et al. (author)
  • Bone-targeted radium-223 in symptomatic, hormone-refractory prostate cancer: a randomised, multicentre, placebo-controlled phase II study
  • 2007
  • In: Lancet Oncol. - 1470-2045 .- 1474-5488. ; 8:7, s. 587-594
  • Journal article (peer-reviewed)abstract
    • BACKGROUND: The alpha-emitter radium-223 ((223)Ra) is a bone-seeking radionuclide studied as a new treatment for patients with bone metastases from hormone-refractory prostate cancer. We aimed to study mature outcomes from a randomised, multicentre, phase II study of (223)Ra. METHODS: Patients with hormone-refractory prostate cancer and bone pain needing external-beam radiotherapy were assigned to four intravenous injections of (223)Ra (50 kBq/kg, 33 patients) or placebo (31 patients), given every 4 weeks. Primary endpoints were change in bone-alkaline phosphatase (ALP) concentration and time to skeletal-related events (SREs). Secondary endpoints included toxic effects, time to prostate-specific-antigen (PSA) progression, and overall survival. All tests were done at a 5% significance level, based on intention to treat. FINDINGS: Median relative change in bone-ALP during treatment was -65.6% (95% CI -69.5 to -57.7) and 9.3% (3.8-60.9) in the (223)Ra group and placebo groups, respectively (p<0.0001, Wilcoxon ranked-sums test). Hazard ratio for time to first SRE, adjusted for baseline covariates, was 1.75 (0.96-3.19, p=0.065, Cox regression). Haematological toxic effects did not differ significantly between two groups. No patient discontinued (223)Ra because of treatment toxicity. Median time to PSA progression was 26 weeks (16-39) versus 8 weeks (4-12; p=0.048) for (223)Ra versus placebo, respectively. Median overall survival was 65.3 weeks (48.7-infinity) for (223)Ra and 46.4 weeks (32.1-77.4) for placebo (p=0.066, log rank). The hazard ratio for overall survival, adjusted for baseline covariates was 2.12 (1.13-3.98, p=0.020, Cox regression). INTERPRETATION: (223)Ra was well tolerated with minimum myelotoxicity, and had a significant effect on bone-ALP concentrations. Larger clinical trials are warranted to study (223)Ra on the prevention of SREs and on overall survival in patients with hormone-refractory prostate cancer. Bone-targeting properties of (223)Ra could also potentially be used for treating skeletal metastasis from other primary cancers.
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696.
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698.
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699.
  • Olofsson, J., et al. (author)
  • Picosecond Kerr-gated time-resolved resonance Raman spectroscopy of the Ru(phen)(2)dppz (2+) interaction with DNA
  • 2002
  • In: Journal of Inorganic Biochemistry. - 0162-0134 .- 1873-3344. ; 91:1, s. 286-297
  • Journal article (peer-reviewed)abstract
    • To investigate the basis of the 'light-switch' effect, the solvent dependence of the Kerr-gated picosecond-time resolved resonance Raman (TR3) spectra of [Ru(bpy),dppz](2+), [Ru(phen)(2)dppz](2+), and the modified complex [Ru(phen)(2)cpdppzOMe](2+) and a dimer [mu-C4(cpdppz)(2)-(phen)(4)Ru-2](4+) were studied. The investigation focussed on comparing the behaviour of [Ru(phen)(2)dppz](2+) in acetonitrile, ethanol, H2O, D2O, and DNA. The data are consistent with a model wherein excitation induces metal-to-ligand charge transfer (MLCT) to any of the ligands (termed the 'precursor' state) which, by interligand electron transfer (ILET), produces an excited state localised on the dppz ligand, MLCT1. In water this state relaxes with a characteristic time of similar to6 ps to a non-emissive state (MLCT2). The TR3 spectra in water, acetonitrile and DNA are all distinctly different. However. the early (4 ps) water spectrum resembles the spectrum in DNA. This interesting observation suggests that the DNA-bound excited state of the complex can be thought of as a model for the initial, poorly solvated state in water.
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  • Result 691-700 of 763
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journal article (584)
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peer-reviewed (698)
other academic/artistic (50)
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Clark, A. (478)
Fox, H. (477)
Moore, R. W. (477)
Kolanoski, H. (476)
Robson, A. (476)
D'Onofrio, M. (475)
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Hou, S. (473)
Price, D. (473)
Li, H. (472)
Mehta, A. (472)
Nakano, I. (472)
Bocci, A. (471)
Burdin, S. (471)
Evans, H. (471)
Giokaris, N. (471)
Gorelov, I. (471)
Hubacek, Z. (471)
Kehoe, R. (471)
Kim, S. H. (471)
Kupco, A. (471)
Limosani, A. (471)
Lipeles, E. (471)
Loginov, A. (471)
Lokajicek, M. (471)
Meyer, J. (471)
Pleier, M. -A. (471)
Qian, J. (471)
Quadt, A. (471)
Sawyer, L. (471)
Abbott, B. (470)
Borissov, G. (470)
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Errede, S. (470)
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Kroll, J. (470)
Neal, H. A. (470)
Oh, S. H. (470)
Parker, M. A. (470)
Annovi, A. (469)
Brock, R. (469)
Campanelli, M. (469)
Cooke, M. (469)
Hughes, G. (469)
Lee, S. C. (469)
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Natural sciences (411)
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