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Träfflista för sökning "hsv:(MEDICIN OCH HÄLSOVETENSKAP) hsv:(Klinisk medicin) hsv:(Cancer och onkologi) srt2:(2000-2004)"

Sökning: hsv:(MEDICIN OCH HÄLSOVETENSKAP) hsv:(Klinisk medicin) hsv:(Cancer och onkologi) > (2000-2004)

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91.
  • Johannsson, Oskar T, et al. (författare)
  • Characterization of a novel breast carcinoma xenograft and cell line derived from a BRCA1 germ-line mutation carrier
  • 2003
  • Ingår i: Laboratory Investigation. - Nature Publishing Group. - 1530-0307. ; 83:3, s. 96-387
  • Tidskriftsartikel (refereegranskat)abstract
    • A human tumor xenograft (L56Br-X1) was established from a breast cancer axillary lymph node metastasis of a 53-year-old woman with a BRCA1 germ-line nonsense mutation (1806C>T; Q563X), and a cell line (L56Br-C1) was subsequently derived from the xenograft. The xenograft carries only the mutant BRCA1 allele and expresses mutant BRCA1 mRNA but no BRCA1 protein as determined by immunoprecipitation or Western blotting. The primary tumor, lymph node metastasis, and xenograft were hypodiploid by DNA flow cytometry, whereas the cell line displayed an aneuploidy apparently developed via polyploidization. Cytogenetic analysis, spectral karyotyping, and comparative genomic hybridization of the cell line revealed a highly complex karyotype with numerous unbalanced translocations. The xenograft and cell line had retained a somatic TP53 missense mutation (S215I) originating from the primary tumors, as well as a lack of immunohistochemically detectable expression of steroid hormone receptors, epidermal growth factor receptor, human epidermal growth factor receptor 2 (HER-2), and keratin 8. Global gene expression analysis by cDNA microarrays supported a correlation between the expression profiles of the primary tumor, lymph node metastasis, xenograft, and cell line. We conclude that L56Br-X1 and L56Br-C1 are useful model systems for studies of the pathogenesis and new therapeutic modalities of BRCA1-induced human breast cancer.
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92.
  • Lennernäs, Bo, 1963-, et al. (författare)
  • Antiangiogenic effect of metronomic paclitaxel treatment in prostate cancer and non-tumor tissue in the same animals: a quantitative study
  • 2004
  • Ingår i: APMIS. - 0903-4641 (Print). ; 112:3, s. 201-9
  • Tidskriftsartikel (refereegranskat)abstract
    • Well-tolerated continuous or metronomic chemotherapy can exert a marked antiangiogenic and thus superior antitumor effect compared with conventional high-dose, temporarily spaced-out chemotherapy, as shown in preclinical studies. There is, however, no means of directly assessing the antiangiogenic effect in a tumor, a serious impediment to assessing the effects of putative antiangiogenic chemotherapeutics or treatments. In an attempt to circumvent or minimize this impediment we studied the antiangiogenic effect of well-tolerated metronomic paclitaxel therapy in a surrogate tumor-free tissue that allows true quantitative analysis as well as in syngeneic At-1 prostate cancer in the same rat. This novel model allows an accurate comparison of the angiogenesis-modulating effect of chemotherapy in the two tissues to be made. The effect of chemotherapy on VEGF-A-mediated angiogenesis, a characteristic of most tumors, was assessed truly quantitatively by microscopic morphometry and image analysis in the tumor-free mesentery. The chemotherapy significantly suppressed VEGF-A-mediated angiogenesis in the mesentery to an extent that closely mirrored the significant increase in tumor necrosis measured morphometrically and the significant decrease in tumor growth rate. This finding opens an avenue to study quantitatively and systematically the antiangiogenic effect of chemotherapeutic modalities and treatments that approximately mirror their antiangiogenic effect in the At-1 tumor.
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93.
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94.
  • Liedberg, Fredrik, et al. (författare)
  • Diagnostic delay and prognosis in invasive bladder cancer
  • 2003
  • Ingår i: Scandinavian Journal of Urology and Nephrology. - Taylor & Francis. - 0036-5599. ; 37:5, s. 396-400
  • Tidskriftsartikel (refereegranskat)abstract
    • Objectives: To study diagnostic delay in invasive bladder cancer in a population-based material with long-term follow-up, and to evaluate whether delay in diagnosis affects the risk of bladder cancer death. Material and Methods: In a previous study, 177 patients with invasive bladder cancer (T1-T4) diagnosed in 1988 were investigated with regard to diagnostic delay. A review of all available clinical records was performed. In the present study, causes of death for these patients were registered over a 12-year follow-up period, and the impact of diagnostic delay on bladder cancer death was studied by means of survival analysis. Results: The median diagnostic delay in the material was 144 days. When the patients were stratified into groups with diagnostic delays of 0-3, 3-6, 6-12 and >12 months, those with T1 tumours in the two groups with a diagnostic delay of <6 months showed a trend towards a decreased risk of bladder cancer death. In contrast, in patients with muscle-invasive disease, a significantly increased risk of bladder cancer death was noted for those with a diagnostic delay of <6 months. Conclusion: A trend towards better prognosis was found for patients with T1 tumours with a shorter diagnostic delay. The poor prognosis of patients with muscle-invasive disease and a short diagnostic delay suggests aggressive behaviour of the tumour and may explain the worse prognosis in these patients.
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95.
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96.
97.
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98.
  • Månsson, Åsa, et al. (författare)
  • Neutral third party versus treating institution for evaluating quality of life after radical cystectomy
  • 2004
  • Ingår i: Eur Urol. - 0302-2838 (Print). ; 46:2, s. 195-9
  • Tidskriftsartikel (refereegranskat)abstract
    • OBJECTIVE: To evaluate the possible impact of a neutral third party on the patients' responses to health-related quality of life (HRQL) instruments. METHODS: 119 patients operated at the Department of Urology in Lund with radical cystectomy and continent urinary tract reconstruction (continent cutaneous diversion or orthotopic bladder substitution) for locally advanced bladder cancer were included in the study. They were randomly divided in two groups, similar with regard to gender, age, length of follow-up, and type of reconstruction. The EORTC instruments QLQ-C30 and QLQ-BLM30 were sent to the patients. One group; "Lund patients", received the instruments from the Department of Urology in Lund, while the other group; "Stockholm patients", received the instruments from a neutral third party, i.e. "The Project Health and Well-Being" at the Karolinska Institutet in Stockholm. RESULTS: Response rates were high in both groups, 59 out of 60 among Lund patients and 57 out of 59 among Stockholm patients. There were statistically significantly more bowel problems reported in the Stockholm patients than in the Lund patients (p<0.05) in the QLQ-C30 instrument. Regarding type of reconstruction, the Stockholm patients with continent cutaneous diversion scored higher for constipation than the Lund patients (p<0.05), and the Stockholm patients with bladder substitution scored lower for emotional functioning and higher for dyspnoea and economical problems than the Lund patients (p<0.05. There were no statistically significant differences between the Lund patients and the Stockholm patients in the QLQ-BLM30 instrument. CONCLUSION: Though few factors differed between the two groups, the results may indicate that different results are obtained when a study is totally administered and analyzed by a neutral third party as compared with the surgeon or his or her institution. Larger studies are needed to further test this hypothesis.
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100.
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