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  • 1.
    Hilborn, Erik
    et al.
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för kliniska vetenskaper. Linköpings universitet, Medicinska fakulteten.
    Gacic, Jelena
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för kliniska vetenskaper. Linköpings universitet, Medicinska fakulteten.
    Fornander, Tommy
    Karolinska Institute, Sweden.
    Nordenskjöld, Bo
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för kliniska vetenskaper. Linköpings universitet, Medicinska fakulteten. Region Östergötland, Centrum för kirurgi, ortopedi och cancervård, Onkologiska kliniken US.
    Stål, Olle
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för kliniska vetenskaper. Linköpings universitet, Medicinska fakulteten. Östergötlands Läns Landsting, Centrum för kirurgi, ortopedi och cancervård, Onkologiska kliniken US.
    Jansson, Agneta
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för kliniska vetenskaper. Linköpings universitet, Medicinska fakulteten.
    Androgen receptor expression predicts beneficial tamoxifen response in oestrogen receptor-alpha-negative breast cancer2016Inngår i: British Journal of Cancer, ISSN 0007-0920, E-ISSN 1532-1827, Vol. 114, nr 3, s. 248-255Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Background: Although the androgen receptor (AR) is frequently expressed in breast cancer, its relevance in the disease is not fully understood. In addition, the relevance of AR in determining tamoxifen treatment efficiency requires evaluation. Purpose: To investigate the tamoxifen predictive relevance of the AR protein expression in breast cancer. Methods Patients were randomised to tamoxifen 40 mg daily for 2 or 5 years or to no endocrine treatment. Mean follow-up was 15 years. Hazard ratios were calculated with recurrence-free survival as end point. Results: In patients with oestrogen receptor (ER)-negative tumours, expression of AR predicted decreased recurrence rate with tamoxifen (hazard ratio (HR) = 0.34; 95% confidence interval (CI) = 0.14-0.81; P = 0.015), whereas the opposite was seen in the AR- group (HR = 2.92; 95% CI = 1.16-7.31; P = 0.022). Interaction test was significant P < 0.001. Patients with triple-negative and AR+ tumours benefitted from tamoxifen treatment (HR = 0.12; 95% CI = 0.014-0.95 P = 0.044), whereas patients with AR- tumours had worse outcome when treated with tamoxifen (HR = 3.98; 95% CI = 1.32-12.03; P = 0.014). Interaction test was significant P = 0.003. Patients with ER+ tumours showed benefit from tamoxifen treatment regardless of AR expression. Conclusions: AR can predict tamoxifen treatment benefit in patients with ER- tumours and triple-negative breast cancer.

    Fulltekst (pdf)
    fulltext
  • 2.
    Hilborn, Erik
    et al.
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för kliniska vetenskaper. Linköpings universitet, Hälsouniversitetet.
    Sivik, Tove
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för kliniska vetenskaper. Linköpings universitet, Hälsouniversitetet.
    Fornander, Tommy
    Karolinska University Hospital, Sweden .
    Stål, Olle
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för kliniska vetenskaper. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Centrum för kirurgi, ortopedi och cancervård, Onkologiska kliniken US.
    Nordenskjöld, Bo
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för kliniska vetenskaper. Linköpings universitet, Hälsouniversitetet. Östergötlands Läns Landsting, Centrum för kirurgi, ortopedi och cancervård, Onkologiska kliniken US.
    Jansson, Agneta
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Avdelningen för kliniska vetenskaper. Linköpings universitet, Hälsouniversitetet.
    C-X-C ligand 10 and C-X-C receptor 3 status can predict tamoxifen treatment response in breast cancer patients2014Inngår i: Breast Cancer Research and Treatment, ISSN 0167-6806, E-ISSN 1573-7217, Vol. 145, nr 1, s. 73-82Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    To investigate the expression levels of CXCL10 and CXCR3 in tumors from breast cancer patients randomized to adjuvant tamoxifen treatment or no endocrine treatment, in order to further study the connection to prognosis and prediction of tamoxifen treatment outcome. Immunohistochemistry on tissue microarrays from 912 breast cancer patients randomized to tamoxifen or no endocrine treatment. CXCR3 status was found to be a prognostic tool in predicting distant recurrence, as well as reduced breast cancer-specific survival. In patients with estrogen receptor (ER)-positive tumors, tumors with strong CXCL10 levels had improved effect of tamoxifen treatment in terms of local recurrence-free survival [risk ratio (RR) 0.46 (95 % CI 0.25-0.85, P = 0.01)] compared with patients with tumors expressing weak CXCL10 expression. Further, patients with ER-positive tumors with strong CXCR3 expression had an improved effect of tamoxifen in terms of breast cancer-specific survival [RR 0.34 (95 % CI 0.19-0.62, P less than 0.001)] compared with the group with weak CXCR3 levels [RR 1.33 (95 % CI 0.38-4.79, P = 0.65)]. We show here for the first time that CXCL10 and CXCR3 expression are both predictors of favorable outcome in patients treated with tamoxifen.

    Fulltekst (pdf)
    C-X-C ligand 10 and C-X-C receptor 3 status can predict tamoxifen treatment response in breast cancer patients
  • 3.
    Sivik, Tove
    et al.
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Onkologi. Linköpings universitet, Hälsouniversitetet.
    Hakkarainen, Janne
    Department of Physiology, Institute of Biomedicine, University of Turku, Turku, Finland.
    Hilborn, Erik
    Linköpings universitet, Institutionen för klinisk och experimentell medicin. Linköpings universitet, Hälsouniversitetet.
    Rodriguez-Martinez, Heriberto
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Utvecklingsbiologi. Linköpings universitet, Hälsouniversitetet.
    Zhang, Fuping
    Department of Physiology, Institute of Biomedicine, University of Turku, Turku, Finland.
    Poutanen, Matti
    Department of Physiology, Institute of Biomedicine, University of Turku, Turku, Finland.
    Jansson, Agneta
    Linköpings universitet, Institutionen för klinisk och experimentell medicin, Onkologi. Linköpings universitet, Hälsouniversitetet.
    Characterisation of Hsd17b14 knockout miceManuskript (preprint) (Annet vitenskapelig)
    Abstract [en]

    17β hydroxysteroid dehydrogenase (17βHSD) enzymes catalyse the stereospecific oxidation/reduction at carbon 17β of androgens and oestrogens and thereby regulate the pool of bioactive sex hormones. 17βHSD type 14 (17βHSD14) catalyses the inactivation of 17β-hydroxysteroids into their less bioactive 17-keto formation in vitro, however, as the catalytic efficiency of this reaction is relatively low, the question is whether this reaction is the biological role of the enzyme in vivo, or if the enzyme additionally or altogether acts within alternative metabolic pathways. To investigate the role of 17βHSD14 in vivo, we studied the phenotype of a mouse model in which the Hsd17b14 gene had been targeted through homologous recombination. Tissues from male and female mice sacrificed at 3-4 months of age were collected and analysed with regards to gene expression of Hsd17b14 and Hsd17b2 and histological appearance of selected organs. Wild type animals expressed Hsd17b14 in a large number of tissues, peaking in reproductive tissues. Mice globally lacking Hsd17b14 were grossly morphologically identical to their WT counterparts. The histological examination however, revealed impaired mammary gland branching and increased hepatocellular vacuolisation in Hsd1714 knockout animals compared with their WT counterparts. In conclusion, while phenotypical aberrances were absent in most tissues, which may be the result of genetic redundancy or possibly an indication that the gene in question is only modulatory, the main differences, primarily a mammary gland phenotype in female KO mice, implicate disturbed hormonal homeostasis, and thus a role for Hsd17b14 in steroidogenesis in vivo.

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