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Träfflista för sökning "L773:0309 0167 OR L773:1365 2559 "

Sökning: L773:0309 0167 OR L773:1365 2559

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21.
  • Mattsson, Johanna Sofia Margareta, et al. (författare)
  • Consistent mutation status within histologically heterogeneous lung cancer lesions
  • 2012
  • Ingår i: Histopathology. - : Wiley. - 0309-0167 .- 1365-2559. ; 61:4, s. 744-748
  • Tidskriftsartikel (refereegranskat)abstract
    • Aims: Activating epidermal growth factor receptor (EGFR) and KRAS mutations characterize molecular subgroups of non-small-cell lung cancer (NSCLC) with a strong predictive value for response to EGFR inhibitor therapy. However, the temporal occurrence and clonal stability of these mutations during the course of cancer progression are debated. The aim of this study was to characterize the presence of EGFR and KRAS mutations in histologically different areas of primary NSCLC lesions. Methods and results: Formalin-fixed paraffin-embedded cancer specimens from six cases with EGFR mutations and five cases with KRAS mutations were selected from a pool of primary resected NSCLC patients. From each tumour, three morphologically distinct areas were manually microdissected and analysed for the presence of mutations. The results demonstrated consistent EGFR and KRAS mutation status in the different histological areas of all primary tumours. Conclusions: The results support the concept that activating EGFR and KRAS mutations are oncogenic events that are consistently present throughout the primary tumour independently of histological heterogeneity. Thus, for molecular diagnostics, any part of the tumour is likely to be representative for EGFR and KRAS mutation testing.
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23.
  • Richardsen, E., et al. (författare)
  • The prognostic impact of M-CSF, CSF-1 receptor, CD68 and CD3 in prostatic carcinoma
  • 2008
  • Ingår i: Histopathology. - : Wiley. - 0309-0167 .- 1365-2559. ; 53:1, s. 30-38
  • Tidskriftsartikel (refereegranskat)abstract
    • Aims: Macrophage colony-stimulating factor (M-CSF) binds to colony-stimulating factor-1 receptor (CSF-1R) and stimulates proliferation and differentiation of monocytes, macrophages and their bone marrow progenitors. M-CSF, CSF-1R, the macrophage marker CD68, and the pan T-lymphocyte marker CD3 are increased in many human cancers. Their prognostic importance in primary prostatic carcinoma has not been fully delineated. The aim was to compare the expression of M-CSF, CSF-1R, CD68 and CD3 in metastatic and non-metastatic prostatic cancer. Methods and results: Digital video analysis of tumour cell areas and tumour stromal areas was performed in 59 cancer specimens: 32 patients with metastases and 27 patients without metastases. Expression of M-CSF and CSF-1R was recorded as 0 (negative immunoreactivity), 1 (weak), 2 (moderate) or 3 (strong reactivity). Macrophages (CD68) and T lymphocytes (CD3) were detected as proportions of moderately or strongly immunoreactive cells. Patients with metastatic primary cancers showed higher expression of M-CSF (P < 0.0001, P = 0.005), CSF-1R (both P < 0.0001) and CD3 (P = 0.007, P < 0.0001) in both tumour cell areas and tumour stromal areas, compared with the non-metastatic cancers. Conclusions: This study suggests that expression of M-CSF, CSF-1R and CD3 is a significant prognostic factor in primary prostatic cancers by predicting the development of metastases.
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24.
  • Rubio, CA, et al. (författare)
  • Lysozyme is up-regulated in Barrett's mucosa
  • 2011
  • Ingår i: Histopathology. - : Wiley. - 1365-2559 .- 0309-0167. ; 58:5, s. 796-799
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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25.
  • Soini, Ylermi, et al. (författare)
  • Claudins 1, 11 and twist in meningiomas
  • 2010
  • Ingår i: Histopathology. - : Wiley. - 0309-0167 .- 1365-2559. ; 56:6, s. 821-824
  • Tidskriftsartikel (refereegranskat)
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26.
  • Spak, Emma, 1977, et al. (författare)
  • Changes in the mucosa of the Roux-limb after gastric bypass surgery.
  • 2010
  • Ingår i: Histopathology. - : Wiley. - 1365-2559 .- 0309-0167. ; 57:5, s. 680-8
  • Tidskriftsartikel (refereegranskat)abstract
    • AIMS: Roux-en-Y gastric bypass surgery is the most efficient treatment of morbid obesity, but the mechanisms of action are still poorly understood. The aim of this study was to explore the Roux-limb mucosa after gastric bypass surgery, focusing upon basic morphology and inflammation. METHODS AND RESULTS: Jejunal mucosal samples from the Roux-limb were gathered from eight patients at time of surgery and 6-8 months postsurgery. Histological evaluation of inflammation and morphometric investigations were performed, cell proliferation was assessed using immunohistochemistry and inflammatory markers and angiotensin (Ang) II receptors were detected using Western blot. Cell proliferation increased and villous surface area decreased in the Roux-limb mucosa but no signs of active inflammation were observed after surgery. Protein analyses showed increased levels of nicotinamide adenine dinucleotide phosphate (NADPH)-oxidase, myeloperoxidase (MPO) and the Ang II type 1(AT(1)) receptor after surgery, whereas the levels of inducible nitric oxide synthase (iNOS), nitrotyrosine and the Ang II type 2(AT(2)) receptor remained constant. CONCLUSION: These results indicate that the phenotype of the jejunal mucosa changes once exposed to undigested food and the increased microbial load in the Roux-limb after surgery.
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29.
  • Willen, R., et al. (författare)
  • Intestinal spirochaetosis
  • 2006
  • Ingår i: Histopathology. - : Wiley. - 0309-0167 .- 1365-2559. ; 49:6, s. 658-9
  • Tidskriftsartikel (refereegranskat)
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30.
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