| 1. |
- Alevronta, Eleftheria, et al.
(författare)
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Dose-response relationships of the sigmoid for urgency syndrome after gynecological radiotherapy.
- 2018
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Ingår i: Acta oncologica (Stockholm, Sweden). - 1651-226X .- 0284-186X. ; 57:10, s. 1352-1358
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Tidskriftsartikel (refereegranskat)abstract
- To find out what organs and doses are most relevant for 'radiation-induced urgency syndrome' in order to derive the corresponding dose-response relationships as an aid for avoiding the syndrome in the future.From a larger group of gynecological cancer survivors followed-up 2-14years, we identified 98 whom had undergone external beam radiation therapy but not brachytherapy and not having a stoma. Of those survivors, 24 developed urgency syndrome. Based on the loading factor from a factor analysis, and symptom frequency, 15 symptoms were weighted together to a score interpreted as the intensity of radiation-induced urgency symptom. On reactivated dose plans, we contoured the small intestine, sigmoid colon and the rectum (separate from the anal-sphincter region) and we exported the dose-volume histograms for each survivor. Dose-response relationships from respective risk organ and urgency syndrome were estimated by fitting the data to the Probit, RS, LKB and gEUD models.The rectum and sigmoid colon have steep dose-response relationships for urgency syndrome for Probit, RS and LKB. The dose-response parameters for the rectum were D50: 51.3, 51.4, and 51.3Gy, γ50=1.19 for all models, s was 7.0e-09 for RS and n was 9.9×107 for LKB. For Sigmoid colon, D50 were 51.6, 51.6, and 51.5Gy, γ50 were 1.20, 1.25, and 1.27, s was 2.8 for RS and n was 0.079 for LKB.Primarily the dose to sigmoid colon as well as the rectum is related to urgency syndrome among gynecological cancer survivors. Separate delineation of the rectum and sigmoid colon in order to incorporate the dose-response results may aid in reduction of the incidence of the urgency syndrome.
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| 2. |
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| 3. |
- Sjöberg, Fei, et al.
(författare)
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Elastase as a potential biomarker for radiation-induced gut wall injury of the distal bowel in an experimental mouse model
- 2018
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Ingår i: Acta Oncologica. - : Informa UK Limited. - 0284-186X .- 1651-226X. ; 57:8, s. 1025-1030
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Tidskriftsartikel (refereegranskat)abstract
- Background and purpose: Traditionally, elastase has been used to study exocrine activity of the pancreas in patients with chronic pancreatitis and cystic fibrosis, and calprotectin as a marker for gut-wall inflammation in patients with inflammatory bowel disease. The aim of the study was to find out whether elastase and calprotectin could be used as inflammatory markers for radiation-induced gut wall injury of the distal bowel.Material and methods: Adult male mice were exposed to two, three, or four fractions of 6Gy or 8Gy irradiation to the sigmoid and rectum of the large bowel, using a linear accelerator. Fecal samples were collected from mice at 1, 3, and 6 weeks post-irradiation. The fecal levels of elastase and calprotectin were analyzed using ELISA.Results: Three and 6 weeks after irradiation, we found a dose-effect relationship between dose of ionizing radiation and the fecal level of elastase; that is significantly higher levels of elastase were observed in mice that had received a high irradiation dose. We also found that irradiated mice hosted in the same cage had a comparable level (either high or low) of elastase. No significant differences were observed from the calprotectin data.Conclusions: We found a clear association between the dose of ionizing radiation to the distal colon and the level of elastase in the fecal samples.
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| 4. |
- Skoogh, Johanna, 1975, et al.
(författare)
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Testicular-cancer survivors experience compromised language following chemotherapy: Findings in a Swedish population-based study 3-26 years after treatment.
- 2012
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Ingår i: Acta oncologica. - 0284-186X .- 1651-226X. ; 51:2, s. 185-197
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Tidskriftsartikel (refereegranskat)abstract
- Abstract Background. Studies suggest an increased risk for compromised cognitive function among cancer survivors. It is unclear to what extent chemotherapy is the cause and how the dysfunction, when present, affects everyday life. The objective was to study self-reported behaviours that may depend on cognitive function, among testicular-cancer survivors who received various cycles of cisplatin-based chemotherapy by comparing them with those who did not. Material and methods. We identified 1173 eligible men diagnosed with non-seminomatous testicular cancer treated according to the national cancer-care programs SWENOTECA I-IV between 1981 and 2004. During an 18-month qualitative phase we constructed a study-specific questionnaire including questions about specific activities and behaviour in everyday life. Results. We obtained information from 960 of 1173 (82%) testicular-cancer survivors diagnosed on average 11 years previously. The prevalence of "saying similar but incorrect words" at least once a week was 5% among those having received no chemotherapy versus 16% among those having received five or more cycles, giving a prevalence ratio ("relative risk", RR) of 3.3 with a 95% confidence interval of 1.5 to 7.1. The corresponding figure for "saying words in the wrong order" was 3.1 (1.7-5.8), for "difficulties understanding what other people mean" 3.1 (1.3-7.7), for "saying words other than planned" 2.2 (1.1-4.5) and for "difficulties completing sentences" 2.0 (1.0-3.6). The relative risks for those with a low level of education ranged between 4.9 (1.6-14.9) and 15.3 (1.9-120.5). Conclusion. Testicular-cancer survivors in Sweden who have received five or more cycles of cisplatin-based chemotherapy experience an increased incidence of long-term compromised language; the effect is primarily seen among men with a low level of education.
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| 5. |
- Steineck, Gunnar, 1952, et al.
(författare)
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Late radiation-induced bowel syndromes, tobacco smoking, age at treatment and time since treatment - gynecological cancer survivors
- 2017
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Ingår i: Acta Oncologica. - : Informa UK Limited. - 0284-186X .- 1651-226X. ; 56:5, s. 682-691
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Tidskriftsartikel (refereegranskat)abstract
- Background: It is unknown whether smoking; age at time of radiotherapy or time since radiotherapy influence the intensity of late radiation-induced bowel syndromes.Material and methods: We have previously identified 28 symptoms decreasing bowel health among 623 gynecological-cancer survivors (three to twelve years after radiotherapy) and 344 matched population-based controls. The 28 symptoms were grouped into five separate late bowel syndromes through factor analysis. Here, we related possible predictors of bowel health to syndrome intensity, by combining factor analysis weights and symptom frequency on a person-incidence scale.Results: A strong (p<.001) association between smoking and radiation-induced urgency syndrome was found with a syndrome intensity (normalized factor score) of 0.4 (never smoker), 1.2 (former smoker) and 2.5 (current smoker). Excessive gas discharge was also related to smoking (p=.001). Younger age at treatment resulted in a higher intensity, except for the leakage syndrome. For the urgency syndrome, intensity decreased with time since treatment.Conclusions: Smoking aggravates the radiation-induced urgency syndrome and excessive gas discharge syndrome. Smoking cessation may promote bowel health among gynecological-cancer survivors. Furthermore, by understanding the mechanism for the decline in urgency-syndrome intensity over time, we may identify new strategies for prevention and alleviation.
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| 6. |
- Steineck, Gunnar, et al.
(författare)
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Late radiation-induced bowel syndromes, tobacco smoking, age at treatment and time since treatment–gynecological cancer survivors
- 2017
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Ingår i: Acta Oncologica. - 1651-226X .- 0284-186X. ; 56:5, s. 682-691
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Tidskriftsartikel (refereegranskat)abstract
- Background: It is unknown whether smoking; age at time of radiotherapy or time since radiotherapy influence the intensity of late radiation-induced bowel syndromes. Material and methods: We have previously identified 28 symptoms decreasing bowel health among 623 gynecological-cancer survivors (three to twelve years after radiotherapy) and 344 matched population-based controls. The 28 symptoms were grouped into five separate late bowel syndromes through factor analysis. Here, we related possible predictors of bowel health to syndrome intensity, by combining factor analysis weights and symptom frequency on a person-incidence scale. Results: A strong (p
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| 7. |
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| 8. |
- Stinesen-Kollberg, Karin, et al.
(författare)
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How badly did it hit? Self-assessed emotional shock upon prostate cancer diagnosis and psychological well-being: a follow-up at 3, 12, and 24 months after surgery.
- 2017
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Ingår i: Acta Oncologica. - 0284-186X. ; 56:7, s. 984-990
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Tidskriftsartikel (refereegranskat)abstract
- We were interested in examining if there was a link between self-assessed emotional shock by prostate cancer diagnosis and psychological well-being at 3, 12, and 24 months after surgery.Information was derived from patients participating in the LAPAroscopic Prostatectomy Robot Open (LAPPRO) trial, Sweden. We analyzed the association between self-assessed emotional shock upon diagnosis and psychological well-being by calculating odds ratios (ORs).A total of 2426 patients (75%) reported self-assessed emotional shock by the prostate cancer diagnosis. Median age of study participants was 63. There was an association between emotional shock and low psychological well-being after surgery: adjusted OR 1.7: (95% confidence interval [CI]), 1.4-2.1 at 3 months; adjusted OR 1.3: CI, 1.1-1.7 at 12 months, and adjusted OR 1.4: CI, 1.1-1.8 at 24 months. Among self-assessed emotionally shocked patients, low self-esteem, anxiety, and having no one to confide in were factors more strongly related with low psychological well-being over time.Experiencing self-assessed emotional shock by prostate cancer diagnosis may be associated with low psychological well-being for up to two years after surgery. Future research may address this high rate of self-assessed emotional shock after diagnosis with the aim to intervene to avoid this negative experience to become drawn out.
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| 9. |
- Stinesen-Kollberg, Karin, et al.
(författare)
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Reduced vaginal elasticity, reduced lubrication, and deep and superficial dyspareunia in irradiated gynecological cancer survivors
- 2015
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Ingår i: Acta Oncologica. - : Taylor & Francis. - 0284-186X .- 1651-226X. ; 54:5, s. 772-779
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Tidskriftsartikel (refereegranskat)abstract
- Purpose. The purpose of this study was to examine whether or not vaginal elasticity or lack of lubrication is associated with deep or superficial dyspareunia. We investigated gynecological cancer survivors treated with radiation therapy. Methods. In a population-based study with 616 women answering a questionnaire (participation rate 78%) and who were treated with radiotherapy for gynecological cancer, we analyzed information from 243 women (39%) who reported that they had had intercourse during the previous six months. Analyses included log-binomial regression (relative risks) and multiple imputations by chained equations in combination with Bayesian Model Averaging, yielding a posterior probability value. Age range of this cancer recurrent-free group of women was 29-80. Results. Dyspareunia affected 164 of 243 of the women (67%). One hundred thirty-four women (55%) reported superficial pain, 97 women (40%) reported deep pain, and 87 women (36%) reported both types of dyspareunia. The relative risk (RR) of deep dyspareunia was 1.87 (CI 1.41-2.49) with impaired vaginal elasticity compared to normal vaginal elasticity. Age and lower abdominal swelling were separate risk factors for deep dyspareunia. However, effects remain after adjusting for these factors. Conclusion. The relative risk of deep dyspareunia was almost twice as high with impaired vaginal elasticity compared to normal vaginal elasticity. If we wish to treat or even prevent deep dyspareunia in women with gynecological cancer, we may use our knowledge of the pathophysiology of deep dyspareunia and increasingly provide dilators together with instructions on how to use them for stretching exercises in order to retain vaginal elasticity. Results highlight the need for studies with more precise questions distinguishing superficial from deep dyspareunia so that in the future we may be able to primarily try to avoid reduced vaginal elasticity and secondarily reduce the symptoms.
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| 10. |
- Alsadius, David, 1975, et al.
(författare)
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Partnership status affects the association between gastrointestinal symptoms and quality of life after radiation therapy for prostate cancer.
- 2014
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Ingår i: Acta oncologica (Stockholm, Sweden). - 1651-226X. ; 53:3, s. 378-384
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Tidskriftsartikel (refereegranskat)abstract
- Purpose. To study if partnership modifies the effect of gastrointestinal symptoms on quality of life after radiation therapy for prostate cancer. Material and methods. Using a study-specific questionnaire we conducted a cross-sectional follow-up of the occurrence gastrointestinal symptoms and quality of life after radiation therapy for prostate cancer. We obtained information from 874 prostate cancer survivors treated with radiation therapy at the Sahlgrenska University Hospital, Sweden between 1994 and 2006. In this paper we describe how partnership status affects the association between gastrointestinal symptoms and quality of life. Results. We found that unpartnered men with gastrointestinal symptoms reported a lower quality of life than unpartnered men without such symptoms. Unpartnered men with symptoms had an excess risk of low quality of life compared with unpartnered men without symptoms for those experiencing altered composition of stools, prevalence ratio 3.8 (95% CI 1.1-13.1), leakage, 3.6 (1.3-10.1), sensory bowel symptoms, 4.5 (1.6-12.8), and for urgency, 4.2 (1.2-15.1). We also found that unpartnered men with symptoms had an excess risk of low quality of life compared with partnered men with symptoms for those experiencing altered composition of stools, prevalence ratio 2.9 (95% CI 1.4-5.8), leakage 2.8 (1.2-6.4), sensory bowel symptoms 3.4 (1.5-7.4), urgency 2.6 (1.2-5.8), and for any gastrointestinal symptom 2.5 (1.3-4.9). Conclusion. Unpartnered men may represent a group that is specifically vulnerable to the distressful effects of gastrointestinal symptoms after radiation therapy for prostate cancer.
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