| 61. |
- Stjernström, Annika, et al.
(author)
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Alterations of INPP4B, PIK3CA and pAkt of the PI3K pathway are associated with squamous cell carcinoma of the lung
- 2014
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In: Cancer Medicine. - : John Wiley & Sons. - 2045-7634. ; 3:2, s. 337-348
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Journal article (peer-reviewed)abstract
- The aim of the study was to investigate how alterations in the PI3K pathway correlate with non-small cell lung cancer subtypes squamous cell carcinoma (SSC) and adenocarcinoma (ADCA). We analyzed copy number variation and protein expression of INPP4B, protein expression of pAkt, PDPK1, and PTEN and mutational status of PIK3CA and PTEN in 180 cases. Nineteen% displayed loss of INPP4B copy, whereas 47% lacked expression, both showing correlation with SCC. Elevated pAkt expression was seen in 63% of all cases, also correlating to SCC. PDPK1 was expressed in 70%, more in male than female patients. Regarding PTEN, 50% displayed loss of expression, of which seven were identified with mutations in the phosphatase domain. We detected nine cases (5%) of PIK3CA mutations, all identified as the E545K hot spot mutation in the helical domain, all except one in SCC. When analyzing all PI3K pathway components together, we show that patients with at least one alteration in the PI3K pathway are twice as likely to have SCC, than ADCA. Interestingly, we also found a strong correlation between high pAkt expression and PTEN expression. As comparison, we also analyzed mitogen-activated protein kinase (MAPK) pathway genes, where we identified fifteen KRAS mutations (8%) and one BRAF mutation (1%), significantly associated to ADCA. No association was found to the Gly972Arg polymorphism of IRS-1, involved in activation of both PI3K and MAPK pathways. In conclusion, we show here that several components of the PI3K pathway, alone and in combination, are correlated to development of SCC of the lung.
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| 62. |
- Porserud, Andrea, et al.
(author)
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The effects of a physical exercise programme after radical cystectomy for urinary bladder cancer. A pilot randomized controlled trial.
- 2014
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In: Clinical Rehabilitation. - : Sage Publications. - 0269-2155 .- 1477-0873. ; 28:5, s. 451-459
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Journal article (peer-reviewed)abstract
- Objective: Assessment of feasibility and effects of an exercise training programme in patients following cystectomy due to urinary bladder cancer.Design: Single-blind, pilot, randomized controlled trial.Setting:University hospital, Sweden.Subjects: Eighteen patients (64-78 years), of 89 suitable, cystectomized due to urinary bladder cancer, were randomized after hospital discharge to intervention or control.Interventions: The 12-week exercise programme included group exercise training twice a week and daily walks. The control group received only standardized information at discharge.Main outcome measures: Trial eligibility and compliance to inclusion were registered. Assessments of functional capacity, balance, lower body strength and health-related quality of life (HRQoL) with SF-36.Results: Out of 122 patients 89 were eligible, but 64 did not want to participate/were not invited. Twenty-five patients were included, but 7 dropped out before randomization. Eighteen patients were randomized to intervention or control. Thirteen patients completed the training period. The intervention group increased walking distance more than the control group, 109 m (75-177) compared to 62 m (36-119) (P = 0.013), and role physical domain in SF-36 more than the control group (P = 0.031). Ten patients were evaluated one year postoperatively. The intervention group had continued increasing walking distance, 20 m (19-36), whereas the control group had shortened the distance -15.5 m (-43 to -5) (P = 0.010).Conclusions: A 12-week group exercise training programme was not feasible for most cystectomy patients. However, functional capacity and the role-physical domain in HRQoL increased in the short and long term for patients in the intervention group compared with controls.
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| 63. |
- Kiflemariam, Sara, et al.
(author)
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In situ sequencing identifies TMPRSS2-ERG fusion transcripts, somatic point mutations and gene expression levels in prostate cancers
- 2014
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In: Journal of Pathology. - : Wiley. - 0022-3417 .- 1096-9896. ; 234:2, s. 253-261
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Journal article (peer-reviewed)abstract
- Translocations contribute to the genesis and progression of epithelial tumours and in particular to prostate cancer development. To better understand the contribution of fusion transcripts and visualize the clonal composition of multifocal tumours, we have developed a technology for multiplex in situ detection and identification of expressed fusion transcripts. When compared to immunohistochemistry, TMPRSS2-ERG fusion-negative and fusion-positive prostate tumours were correctly classified. The most prevalent TMPRSS2-ERG fusion variants were visualized, identified, and quantitated in human prostate cancer tissues, and the ratio of the variant fusion transcripts could for the first time be directly determined by in situ sequencing. Further, we demonstrate concurrent in situ detection of gene expression, point mutations, and gene fusions of the prostate cancer relevant targets AMACR, AR, TP53, and TMPRSS2-ERG. This unified approach to in situ analyses of somatic mutations can empower studies of intra-tumoural heterogeneity and future tissue-based diagnostics of mutations and translocations.
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| 64. |
- Ekwall, Eva, 1950-, et al.
(author)
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Lived experiences of women with recurring ovarian cancer
- 2014
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In: European Journal of Oncology Nursing. - : Elsevier. - 1462-3889 .- 1532-2122. ; 18:1, s. 104-109
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Journal article (peer-reviewed)abstract
- Background: Women with recurring ovarian cancer are living longer, due to advances in treatment options. They are now often outpatients, experiencing rapid encounters on treatment days. Whether this shift in care meets women’s needs has been scarcely explored scientifically.Purpose of the study: This study aimed to illuminate the phenomenon of living with recurring ovarian cancer as experienced by women in that condition.Methods and sample: A descriptive phenomenological method was used. Eight open-ended interviews with four women were performed approximately three and five years after the first recurrence of ovarian cancer. During these years the women had repeated clinically and radiologically verified recurrence requiring chemotherapy.Key results:The phenomenon of living with recurring ovarian cancer meant that the women felt forced to pay attention to the failing body in order to avoid a potential breakdown. The growing limitation of their intermittent strength meant that strength had to be captured and protected. Sharing their lives with others was difficult, due to the different living conditions. The women found no space to mediate their experiences, either in close relationships or with health care professionals. But, the circumstances they lived under also generated a gratitude for the unexpected extra time.Conclusions: The findings revealed that the four women were grateful to live a while longer, but needed to share their state of being. The findings are indeed directed to health care professionals, who need to provide a more patient-centred care to meet the women’s needs.
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| 65. |
- Hardell, Lennart, 1944-, et al.
(author)
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Mobile Phones and Cancer : Next Steps
- 2014
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In: Epidemiology. - : Lippincott Williams & Wilkins. - 1044-3983 .- 1531-5487. ; 25:4, s. 617-618
-
Journal article (peer-reviewed)
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| 66. |
- Häggström, Christel, et al.
(author)
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Prostate Cancer, Prostate Cancer Death, and Death from Other Causes, Among Men with Metabolic Aberrations
- 2014
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In: Epidemiology. - 1044-3983 .- 1531-5487. ; 25:6, s. 823-828
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Journal article (peer-reviewed)abstract
- Background: Few previous studies of metabolic aberrations and prostate cancer risk have taken into account the fact that men with metabolic aberrations have an increased risk of death from causes other than prostate cancer. The aim of this study was to calculate, in a real-life scenario, the risk of prostate cancer diagnosis, prostate cancer death, and death from other causes.Methods: In the Metabolic Syndrome and Cancer Project, prospective data on body mass index, blood pressure, glucose, cholesterol, and triglycerides were collected from 285,040 men. Risks of prostate cancer diagnosis, prostate cancer death, and death from other causes were calculated by use of competing risk analysis for men with normal (bottom 84%) and high (top 16%) levels of each factor, and a composite score.Results: During a mean follow-up period of 12 years, 5,893 men were diagnosed with prostate cancer, 1,013 died of prostate cancer, and 26,328 died of other causes. After 1996, when prostate-specific antigen testing was introduced, men up to age 80 years with normal metabolic levels had 13% risk of prostate cancer, 2% risk of prostate cancer death, and 30% risk of death from other causes, whereas men with metabolic aberrations had corresponding risks of 11%, 2%, and 44%.Conclusions: In contrast to recent studies using conventional survival analysis, in a real-world scenario taking risk of competing events into account, men with metabolic aberrations had lower risk of prostate cancer diagnosis, similar risk of prostate cancer death, and substantially higher risk of death from other causes compared with men who had normal metabolic levels.
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| 67. |
- Omerov, Pernilla, et al.
(author)
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Viewing the body after bereavement due to suicide: a population-based survey in Sweden.
- 2014
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In: PloS one. - : Public Library of Science (PLoS). - 1932-6203. ; 9:7
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Journal article (peer-reviewed)abstract
- Research on the assumed, positive and negative, psychological effects of viewing the body after a suicide loss is sparse. We hypothesized that suicide-bereaved parents that viewed their childs body in a formal setting seldom regretted the experience, and that viewing the body was associated with lower levels of psychological morbidity two to five years after the loss.
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| 68. |
- Hahn-Strömberg, Victoria, 1971-, et al.
(author)
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Polymorphisms in the CLDN1 and CLDN7 genes are related to differentiation and tumor stage in colon carcinoma
- 2014
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In: Acta Pathologica, Microbiologica et Immunologica Scandinavica (APMIS). - : Wiley-Blackwell. - 0903-4641 .- 1600-0463. ; 122:7, s. 636-642
-
Journal article (peer-reviewed)abstract
- Tight junction is composed of transmembrane proteins important for maintaining cell polarity and regulating ion flow. Among these proteins are the tissue-specific claudins, proteins that have recently been suggested as tumor markers for several different types of cancer. An altered claudin expression has been observed in colon, prostatic, ovarian, and breast carcinoma. The aim of this study was to analyze the allele frequencies of three common single nucleotide polymorphisms (SNPs) in the genes for claudin 1 and claudin 7 in colon cancer (CC) patients and in a control population of healthy blood donors. Pyrosequencing was used to genotype the CLDN1 SNP rs9869263 (c.369C>T), and the CLDN7 SNPs rs4562 (c.590C>T) and rs374400 (c.606T>G) in DNA from 102 formalin fixed paraffin embedded (FFPE) colon cancer tissue, and 111 blood leukocyte DNA from blood/plasma donors. These results were correlated with clinical parameters such as TNM stage, tumor localization, tumor differentiation, complexity index, sex, and age. We found that there was a significant association between the CLDN1 genotype CC in tumor samples and a higher risk of colon cancer development (OR 3.0, p < 0.001). We also found that the CLDN7 rs4562 (c.590C>T) genotype CT had a higher risk of lymph node involvement (p = 0.031) and a lower degree of tumor differentiation (p = 0.028). In the control population, the allele frequencies were very similar to those in the HapMap cohort for CLDN7. The CLDN1 rs9869263 genotype (c.369C>T) was related to increased risk of colon cancer, and the CLDN7 rs4562 genotype (c.590C>T) was related to tumor differentiation and lymph node involvement in colon carcinoma. Further studies are warranted to ascertain their potential uses as biomarkers predicting tumor development, proliferation, and outcome in this disease.
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| 69. |
- Björner, Sofie, et al.
(author)
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Epithelial and Stromal MicroRNA Signatures of Columnar Cell Hyperplasia Linking Let-7c to Precancerous and Cancerous Breast Cancer Cell Proliferation
- 2014
-
In: Plos One. - : Public Library of Science (PLoS). - 1932-6203. ; 9:8
-
Journal article (peer-reviewed)abstract
- Columnar cell hyperplasia (CCH) is the earliest histologically identifiable breast lesion linked to cancer progression and is characterized by increased proliferation, decreased apoptosis and elevated oestrogen receptor alpha (ER alpha) expression. The mechanisms underlying the initiation of these lesions have not been clarified but might involve early and fundamental changes in cancer progression. MiRNAs are key regulators of several biological processes, acting by influencing the post-transcriptional regulation of numerous targets, thus making miRNAs potential candidates in cancer initiation. Here we have defined novel epithelial as well as stromal miRNA signatures from columnar cell hyperplasia lesions compared to normal terminal duct lobular units by using microdissection and miRNA microarrays. Let-7c were among the identified downregulated epithelial miRNAs and its functions were delineated in unique CCH derived cells and breast cancer cell line MCF-7 suggesting anti-proliferative traits potentially due to effects on Myb and ER alpha. MiR-132 was upregulated in the stroma surrounding CCH compared to stoma surrounding normal terminal duct lobular units (TDLUs), and overexpression of miR-132 in immortalized fibroblasts and in fibroblasts co-cultured with epithelial CCH cells caused substantial expression changes of genes involved in metabolism, DNA damage and cell motility. The miRNA signatures identified in CCH indicate early changes in the epithelial and stromal compartment of CCH and could represent early key alterations in breast cancer progression that potentially could be targeted in novel prevention or treatment schedules.
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| 70. |
- Chen, Dan, et al.
(author)
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A variant upstream of HLA-DRB1 and multiple variants in MICA influence susceptibility to cervical cancer in a Swedish population
- 2014
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In: Cancer Medicine. - : John Wiley & Sons. - 2045-7634. ; 3:1, s. 190-198
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Journal article (peer-reviewed)abstract
- In a genome-wide association study, we have previously identified and performed the initial replication of three novel susceptibility loci for cervical cancer: rs9272143 upstream of HLA-DRB1, rs2516448 adjacent to MHC class I polypeptide-related sequence A gene (MICA), and rs3117027 at HLA-DPB2. The risk allele T of rs2516448 is in perfect linkage disequilibrium with a frameshift mutation (A5.1) in MICA exon 5, which results in a truncated protein. To validate these associations in an independent study and extend our prior work to MICA exon 5, we genotyped the single-nucleotide polymorphisms at rs9272143, rs2516448, rs3117027 and the MICA exon 5 microsatellite in a nested case–control study of 961 cervical cancer patients (827 carcinoma in situ and 134 invasive carcinoma) and 1725 controls from northern Sweden. The C allele of rs9272143 conferred protection against cervical cancer (odds ratio [OR] = 0.73, 95% confidence interval [CI] = 0.65–0.82; P = 1.6 × 10−7), which is associated with higher expression level of HLA-DRB1, whereas the T allele of rs2516448 increased the susceptibility to cervical cancer (OR = 1.33, 95% CI = 1.19–1.49; P = 5.8 × 10−7), with the same association shown with MICA-A5.1. The direction and the magnitude of these associations were consistent with our previous findings. We also identified protective effects of the MICA-A4 (OR = 0.80, 95% CI = 0.68–0.94; P = 6.7 × 10−3) and MICA-A5 (OR = 0.60, 95% CI = 0.50–0.72; P = 3.0 × 10−8) alleles. The associations with these variants are unlikely to be driven by the nearby human leukocyte antigen (HLA) alleles. No association was observed between rs3117027 and risk of cervical cancer. Our results support the role of HLA-DRB1 and MICA in the pathogenesis of cervical cancer.
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