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- Erlandsson, Ann, 1968-, et al.
(author)
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High inducible nitric oxide synthase in prostate tumor epithelium is associated with lethal prostate cancer
- 2018
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In: Scandinavian journal of urology. - : Informa Healthcare. - 2168-1805 .- 2168-1813. ; 52:2, s. 129-133
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Journal article (peer-reviewed)abstract
- OBJECTIVE: The aim of this study was to investigate the role of inducible nitric oxide synthase (iNOS) in lethal prostate cancer (PCa) by studying the iNOS immunoreactivity in tumor tissue from men diagnosed with localized PCa.MATERIALS AND METHODS: This study is nested within a cohort of men diagnosed with incidental PCa undergoing transurethral resection of the prostate (the Swedish Watchful Waiting Cohort). To investigate molecular determinants of lethal PCa, men who died from PCa (n = 132) were selected as cases; controls (n = 168) comprised men with PCa who survived for at least 10 years without dying from PCa during follow-up. The immunoreactivity of iNOS in prostate tumor epithelial cells and in cells of the surrounding stroma was scored as low/negative, moderate or high. Logistic regression was used to estimate odds ratios (ORs) and 95% confidence intervals (95% CIs) for lethal PCa according to iNOS category.RESULTS: There was no association between iNOS immunoreactivity in stroma and lethal disease. However, when comparing high versus low/negative iNOS immunoreactivity in epithelial cells, the OR for lethal PCa was 3.80 (95% CI 1.45-9.97).CONCLUSION: Patients with localized PCa have variable outcomes, especially those with moderately differentiated tumors. Identifying factors associated with long-term PCa outcomes can elucidate PCa tumor biology and identify new candidate prognostic markers. These findings support the hypothesis that high iNOS in tumor epithelium of the prostate is associated with lethal disease.
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| 2. |
- Erlandsson, Ann, 1968-, et al.
(author)
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M2 macrophages and regulatory T cells in lethal prostate cancer.
- 2019
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In: The Prostate. - : John Wiley & Sons. - 0270-4137 .- 1097-0045. ; 79:4, s. 363-369
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Journal article (peer-reviewed)abstract
- BACKGROUND: Prostate cancer (PCa) is one of the most frequently diagnosed cancers in the world. Emerging evidence suggests that inflammatory cells such as M2 macrophages and regulatory T cells (Tregs ) can contribute to cancer progression by suppressing the anti-tumor immune response. This study investigated the number of CD163-positive M2 macrophages in PCa tissue. It also investigated the correlation and interaction of M2 macrophages and Tregs .METHODS: This nested case-control study included subjects from a cohort of men diagnosed with PCa as an incidental finding during transurethral resection of the prostate. The cases were 225 men who died from PCa, and the controls were 367 men who survived more than 10 years after PCa diagnosis without disease progression. Infiltrating CD163-positive M2 macrophages and FOXP3/CD4-positive Tregs in PCa tissue were identified using immunohistochemistry. The correlation and interaction of M2 macrophages and Tregs were assessed using Spearman's rank-order correlation and a likelihood test, respectively. Logistic regression was used to estimate odds ratios (ORs) for lethal PCa and macrophage counts.RESULTS: The number of M2 macrophages and Tregs showed a significant correlation (P < 0.001) but no interactions. The OR for lethal PCa was 1.93 (95%CI: 1.23-3.03) for men with high numbers of M2 macrophages. Also for cases with uncertain outcome (GS categories 3 + 4 and 4 + 3) high numbers of M2 macrophages does predict a poorer prognosis.CONCLUSIONS: Our data showed that men with high numbers of M2 macrophages in the prostate tumor environment had increased odds of dying of PCa. It is possible that M2 macrophages, together with other suppressor cells such as Tregs , promote an immunosuppressive environment.
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| 3. |
- Ringnér, Anders, 1975-, et al.
(author)
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What was on the parents' minds? : Changes over time in topics of person-centred information for mothers and fathers of children with cancer
- 2023
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In: Comprehensive Child and Adolescent Nursing. - : Taylor & Francis. - 2469-4207 .- 2469-4193. ; 46:2, s. 114-125
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Journal article (peer-reviewed)abstract
- Acquiring information about one's child's cancer diagnosis is a complex and ever-changing process, and parents' needs change over time. As yet, we know little about what information parents require at different stages of their child's illness. This paper is part of a larger randomized control trial studying the parent-centered information given to mothers and fathers. The aim of this paper was to describe the topics addressed in person-centered meetings between nurses and parents of children with cancer and how those changed over time. Using qualitative content analysis, we analyzed nurses' written summaries of 56 meetings with 16 parents and then computed for each topic the percentage of parents who brought it up at any time during the intervention. The main categories were Child's disease and treatment (addressed by 100% of parents), Consequences of treatment (88%), Emotional management for the child (75%), Emotional management for the parent (100%), Social life of the child (63%), and Social life of the parent (100%). Different topics were addressed at different points in time, and fathers raised more concerns about the child's emotional management and the consequences of treatment than mothers. This paper suggests that parental information demands change over time and differ between fathers and mothers, implying that information should be person-centered. Registered at Clinicaltrials.gov (NCT02332226).
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| 4. |
- Erlandsson, Ann, 1968-, et al.
(author)
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Infiltrating immune cells in prostate cancer tissue after androgen deprivation and radiotherapy
- 2023
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In: International journal of immunopathology and pharmacology. - : Sage Publications. - 0394-6320 .- 2058-7384. ; 37
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Journal article (peer-reviewed)abstract
- Objectives: Androgen deprivation therapy (ADT) has long been a cornerstone in treatment of advanced prostate cancer (PCa), and is known to improve the results of radiotherapy (RT) for high-risk disease. The purpose of our study was to use a multiplexed immunohistochemical (mIHC) approach to investigate the infiltration of immune cells in PCa tissue after eight weeks of ADT and/or RT with 10 Gy.Methods: From a cohort of 48 patients divided into two treatment arms, we obtained biopsies before and after treatment and used a mIHC method with multispectral imaging to analyze the infiltration of immune cells in tumor stroma and tumor epithelium, focusing on areas with high infiltration.Results: Tumor stroma showed a significantly higher infiltration of immune cells compared to tumor epithelium. The most prominent immune cells were CD20(+) B-lymphocytes, followed by CD68(+) macrophages, CD8(+) cytotoxic T-cells, FOXP3(+) regulatory T-cells (Tregs), and T-bet(+) Th1-cells. Neoadjuvant ADT followed by RT significantly increased the infiltration of all five immune cells. Numbers of Th1-cells and Tregs significantly increased after single treatment with ADT or RT. In addition, ADT alone increased the number of cytotoxic T-cells and RT increased the number of B-cells.Conclusions: Neoadjuvant ADT in combination with RT results in a higher inflammatory response compared to RT or ADT alone. The mIHC method may be a useful tool for investigating infiltrating immune cells in PCa biopsies to understand how immunotherapeutic approaches can be combined with current PCa therapies.
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