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Sökning: L773:0250 7005 OR L773:1791 7530 > (2010-2014) > Medicin och hälsovetenskap

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1.
  • Jäwert, Fredrik, et al. (författare)
  • Loss of 5-Hydroxymethylcytosine and TET2 in Oral Squamous Cell Carcinoma.
  • 2013
  • Ingår i: Anticancer research. - 1791-7530 .- 0250-7005. ; 33:10, s. 4325-8
  • Tidskriftsartikel (refereegranskat)abstract
    • Aim: Epigenetic modifications, such as DNA methylation, are considered important in the regulation of target genes in cancer development. 5-Hydroxymethylcytosine (5hmC) was recently discovered to be related to the process of malignant transformation. The influence of DNA methylation in oral squamous cell carcinomas (OSCC) is not fully-understood. Therefore, the aim of the present study was to investigate the DNA methylation pattern in OSCC compared to healthy oral epithelium.
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2.
  • Falk, Magnus (författare)
  • Self-estimation or Phototest Measurement of Skin UV Sensitivity and its Association with Peoples Attitudes Towards Sun Exposure
  • 2014
  • Ingår i: Anticancer Research. - : International Institute of Anticancer Research (IIAR). - 0250-7005 .- 1791-7530. ; 34:2, s. 797-803
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND:Fitzpatrick's classification is the most common way of assessing skin UV sensitivity. The study aim was to investigate how self-estimated and actual UV sensitivity, as measured by phototest, are associated with attitudes towards sunbathing and the propensity to increase sun protection, as well as the correlation between self-estimated and actual UV sensitivity.PATIENTS AND METHODS:A total of 166 primary healthcare patients filled-out a questionnaire investigating attitudes towards sunbathing and the propensity to increase sun protection. They reported their skin type according to Fitzpatrick, and a UV sensitivity phototest was performed.RESULTS:Self-rated low UV sensitivity (skin type III-VI) was associated with a more positive attitude towards sunbathing and a lower propensity to increase sun protection, compared to high UV sensitivity. The correlation between the two methods was weak.CONCLUSION:The findings might indicate that individuals with a perceived low but in reality high UV sensitivity do not seek adequate sun protection with regard to skin cancer risk. Furthermore, the poor correlation between self-reported and actual UV sensitivity, measured by phototest, makes the clinical use of Fitzpatrick's classification questionable.
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3.
  • Derwinger, Kristoffer, 1969, et al. (författare)
  • Age Aspects of Demography, Pathology and Survival Assessment in Colorectal Cancer
  • 2010
  • Ingår i: ANTICANCER RESEARCH. - : International Institute of Anticancer Research. - 0250-7005 .- 1791-7530. ; 30:12, s. 5227-5231
  • Tidskriftsartikel (refereegranskat)abstract
    • Aim: The aim of this study was to assess how age is related to differences in stage, tumour differentiation and treatment in colorectal cancer. Patients and Methods: A retrospective study in a consecutive series of colorectal cancer patients (n=2220) where age was related to demography, stage, tumour characteristics, treatment and outcome (OS/CSS) both as a continuous variable and grouped by high/low 10th percentiles, as young/old groups, with a third median reference group. Results: Young patients had more advanced cancer stages (p=0.012), higher N-status (p=0.011) and more frequent T4/G4 tumours. Old patients had higher postoperative mortality and were less likely to receive chemotherapy. The proportion of cancer-related deaths was stage-dependent and decreased with age. Conclusion: Cancer stage, tumour characteristics, treatment and outcome can vary with age in colorectal cancer. The increasing proportion of non-cancer deaths at a higher age can affect the use of overall survival as an outcome parameter, which may be of importance in evaluating clinical and translational research.
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4.
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5.
  • Hellberg, Dan (författare)
  • Sex Steroids and Cervical Cancer
  • 2012
  • Ingår i: Anticancer Research. - 0250-7005 .- 1791-7530. ; 32:8, s. 3045-3054
  • Forskningsöversikt (refereegranskat)abstract
    • During the 19th century, studies indicated that reproductive events were involved in cervical cancer. Human papillomavirus (HPV) infection is a prerequisite for development of cancer, but co-factors, among them the action of sexual steroid hormones, are necessary. Childbirth has been an important risk factor but now probably plays a minor role in the industrialized world, where parity is low. Longterm oral contraceptive use has been thoroughly studied epidemiologically, and correlates to cervical cancer in most studies. In vitro studies on cervical cell lines transfected with HPV and animal studies indicate that sex steroid hormones are capable to induce cancer. In in vivo cervical cancer tissue studies there have been observations that endogenous progesterone in serum correlates to a negative pattern of expression of cellular and extracellular proteins, tumor markers. Immune response could be another mechanism. Estradiol might be associated with a positive pattern and high estradiol and low progesterone levels increase duration of survival in cervical cancer. Studies where treatment of compounds that influence sex steroid hormones have been given are rare and have been disappointing.
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6.
  • Hillbertz, Nicolette Salmon, et al. (författare)
  • Viral and Molecular Aspects of Oral Cancer
  • 2012
  • Ingår i: Anticancer Research. - 0250-7005 .- 1791-7530. ; 32:10, s. 4201-4212
  • Forskningsöversikt (refereegranskat)abstract
    • Squamous cell carcinoma (SCC) is the most common epithelial malignancy in the oral cavity. SCCs and their variants constitute over 90% of oral malignancies, and the disease is associated with poor prognosis. OSCC is a complex malignancy where environmental factors, virus infections, and genetic alterations most likely interact, and thus give rise to the malignant condition. Herein, we review the available literature regarding high-risk factors such as alcohol and tobacco usage; discuss the roles of human papillomaviruses (HPV), the Epstein-Barr virus, and the human herpes simplex virus (HSV); and evaluate several candidate genes associated with the condition: p53, p16(INK4) and p21(WAF1/CIP1) survivin, B-cell lymphoma-2 (BCL-2), keratins, Fibroblast growth factor 3 (FGF3), FGF4, FGF19, Oral cancer overexpressed gene 1 (ORAOV1), and Cyclin D1 (CCND1).
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7.
  • Holgersson, Georg, et al. (författare)
  • The value of induction chemotherapy for survival in patients with non-small cell lung cancer treated with radiotherapy.
  • 2012
  • Ingår i: Anticancer research. - : The International Institute of Anticancer Research. - 1791-7530 .- 0250-7005. ; 32:4, s. 1339-46
  • Tidskriftsartikel (refereegranskat)abstract
    • AIM: The aim of the present study was to retrospectively investigate the impact of induction chemotherapy on treatment outcome in patients treated with curatively intended radiotherapy for non-small cell lung cancer (NSCLC). PATIENTS AND METHODS: Patients with a diagnosed NSCLC that have been subjected to curatively intended irradiation (≥50 Gy) and treated in an oncology department in Sweden during the years 1990-2000 were included in the study. Operated patients and patients having received concomitant chemotherapy were excluded. The included patients were localised by a manual search of all the oncology departments' medical records and radiation charts. RESULTS: Patients treated with induction chemotherapy (n=79) had a significantly better overall survival compared with patients treated with radiotherapy alone (p=0.0097) in a univariate Cox regression analysis. A platinum/taxane combination produced the greatest survival benefit; hazard ratio=0.49 (95% confidence interval=0.31 to 0.75). CONCLUSION: We found that patients treated with induction chemotherapy in addition to radiotherapy for NSCLC have a better overall survival than patients treated with radiotherapy alone and that the best results are achieved using a platinum/taxane combination.
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8.
  • Kopparapu, Pradeep Kumar, et al. (författare)
  • Expression and localization of serotonin receptors in human breast cancer
  • 2013
  • Ingår i: Anticancer Research. - : International Institute of Anticancer Research. - 0250-7005 .- 1791-7530. ; 33:2, s. 363-370
  • Tidskriftsartikel (refereegranskat)abstract
    • The aim of this study was to examine the expression of serotonin receptors in patients with breast cancer and to explore their utility as diagnostic and prognostic markers. Immunohistochemical analysis was performed to examine the expression of serotonin (5-HT) receptor subtypes 1A, 1B, 2B and 4 in a tissue microarray containing tumor specimens from 102 patients. Statistical analysis was performed to correlate the expression of these proteins with regard to clinical parameters. We found that all four serotonin receptors (5-HTRs) exhibited different expression patterns in breast cancer specimens. In general strong staining for 5-HTR1A was observed on the membrane of cancer cells but it was detected only in the cytoplasm of non-malignant cells. 5-HTR1B and 5-HTR2B were predominantly expressed in the cytoplasm of breast cancer cells, while 5-HTR4 was exclusively found in the nucleus of malignant and non-malignant cells. Correlation analysis revealed a significant correlation of 5-HTR2B with estrogen receptor-α (ER-α) and 5-HTR4 with ER-α and progesterone (PR). In conclusion, the different expression patterns and subcellular localization of 5-HTRs in breast cancer may reflect their role in breast cancer progression.
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9.
  • Nyström, Hanna, 1980-, et al. (författare)
  • Liver-metastatic potential of colorectal cancer is related to the stromal composition of the tumour
  • 2012
  • Ingår i: Anticancer Research. - 0250-7005 .- 1791-7530. ; 32:12, s. 5183-5191
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: The tumour stroma is an important modulator of cancer cell behaviour. The aim of this study was to compare the stromal composition between primary colorectal cancer (CRC) and colorectal liver metastases (CLM).Materials and Methods: The stromal composition in matched tissue sections of CRC and subsequent CLM was analysed, and related to clinical parameters.Results: Differences in the expression pattern of type I collagen and type IV collagen in CRC was related to a higher risk of CLM. Two types of CLM the desmoplastic and pushing type were identified. The time between CRC and diagnosis of CLM was shorter (p=0.047) for desmoplastic CLM. The mortality rate was higher for pushing CLM due to frequent extrahepatic disseminated disease. A difference in the overall survival rate between patients with desmoplastic and those with pushing CLM was seen at follow-up of more than 60 months (p=0.046).Conclusion: The liver-metastasizing potential is related to the stromal composition of primary CRC. There are distinct growth patterns in CLM with differences in stromal composition and clinical outcome.
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10.
  • Rubio, Carlos A., et al. (författare)
  • Pitfall in Assessing the Size of Tumor Phantoms on Mammograms
  • 2013
  • Ingår i: Anticancer Research. - 0250-7005 .- 1791-7530. ; 33:3, s. 1131-1134
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Tumor size is crucial for clinical management and prognosis of breast malignancies. Materials and Methods: The gold standard-size of 12 tumor phantoms was assessed at The Department of Production Engineering. Subsequently, with a conventional ruler, seven experienced mammographers measured the largest diameter of the 12 devices in two independent trials. Results: In the first trial, 30% (n=25) of the 84 values given by the seven mammographers failed to recreate the gold standard size by >1 mm and in the second, by 37% (31184). Size was overestimated (>1 mm) in 9.5% (n=8) of 84 measurements in the first trial, and in 15.5% (14184) in the second. Conversely, size was underestimated (>1 mm) in 20% (n=17) of 84 measurements in the first trial, and in 21% (18/84) in the second. Neither the age of the participants, nor their years of experience improved the obtained results. Discussion: The method used here raised doubts concerning the ability of discriminating size among subgroups of T1 breast tumors in mammograms. According to the TNM staging system, T1 tumors (<= 2.0 cm in greatest dimension) are subdivided into T1mic: microinvasion (<= 0.1 cm), T1a (>0.1 cm but not more than 0.5 cm), T1b (>0.5 cm but not more than 1.0 cm) and Tic (>1.0 cm but not more than 2.0 cm in their greatest dimension). Since the TNM staging system for breast tumors is important in therapeutic decision making, it is crucial to develop a more reliable method for tumor size assessment.
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