| 11. |
- Eilertsen, M. E. B., et al.
(author)
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Impact of Social Support on Bereaved Siblings' Anxiety: A Nationwide Follow-Up
- 2013
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In: Journal of Pediatric Oncology Nursing. - : SAGE Publications. - 1043-4542 .- 1532-8457. ; 30:6, s. 301-310
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Journal article (peer-reviewed)abstract
- Purpose:To assess adolescent and young adult siblings' perception of social support prior to and following the loss of their brother or sister to cancer, 2 to 9 years earlier, and their anxiety at follow-up. Method: In 2009, 174 (73%) bereaved siblings (12-25 years) participated in a nationwide, long-term follow-up study in Sweden using an anonymous study-specific questionnaire. The Hospital Anxiety and Depression Scale was used to measure self-assessed anxiety. Results: Siblings had a higher risk of anxiety if they perceived their need for social support was unsatisfied during their brother or sisters' last month before death, relative risk (RR) = 3.6 (95% confidence interval [CI] = 1.8-7.3); time after death, RR = 2.9 (95% CI = 1.5-5.6); and at follow-up, RR = 3.8 (95% CI = 2.0-7.2). Furthermore, a higher risk for anxiety was shown for siblings if they did not perceive that their parents and neighbors cared for them after their brother or sisters' death, RR = 2.7 (95% CI = 1.3-5.5), RR = 5.4 (95% CI = 1.3-21.9), respectively. Conclusion: Bereaved siblings had a greater probability to report self-assessed anxiety if they perceived that their need for social support was not satisfied prior to and following death. Information from both nurses and other health care professionals to families about the impact of social support may contribute to lessen the siblings' risk of anxiety.
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| 12. |
- Ge, Chenjie, 1991, et al.
(author)
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Enlarged Training Dataset by Pairwise GANs for Molecular-Based Brain Tumor Classification
- 2020
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In: IEEE Access. - 2169-3536 .- 2169-3536. ; 8:1, s. 22560-22570
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Journal article (peer-reviewed)abstract
- This paper addresses issues of brain tumor subtype classification using Magnetic Resonance Images (MRIs) from different scanner modalities like T1 weighted, T1 weighted with contrast-enhanced, T2 weighted and FLAIR images. Currently most available glioma datasets are relatively moderate in size, and often accompanied with incomplete MRIs in different modalities. To tackle the commonly encountered problems of insufficiently large brain tumor datasets and incomplete modality of image for deep learning, we propose to add augmented brain MR images to enlarge the training dataset by employing a pairwise Generative Adversarial Network (GAN) model. The pairwise GAN is able to generate synthetic MRIs across different modalities. To achieve the patient-level diagnostic result, we propose a post-processing strategy to combine the slice-level glioma subtype classification results by majority voting. A two-stage course-to-fine training strategy is proposed to learn the glioma feature using GAN-augmented MRIs followed by real MRIs. To evaluate the effectiveness of the proposed scheme, experiments have been conducted on a brain tumor dataset for classifying glioma molecular subtypes: isocitrate dehydrogenase 1 (IDH1) mutation and IDH1 wild-type. Our results on the dataset have shown good performance (with test accuracy 88.82%). Comparisons with several state-of-the-art methods are also included.
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| 13. |
- Wilms, Torben, 1973-
(author)
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Squamous cell carcinoma of the head and neck, focusing on Epstein-Barr-virus, programmed cell death ligand 1 and serum lipoproteins
- 2021
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Doctoral thesis (other academic/artistic)abstract
- Background: Squamous cell carcinoma of the head and neck (SCCHN)comprises a large group of tumours including the oral cavity and nasopharyngealarea, and typically affects older males in association with alcohol/tobacco usage.Within the oral cavity, the mobile tongue is the most common site for tumourdevelopment. The incidence of squamous cell carcinoma of the oral tongue(SCCOT) is increasing in younger people, which has been suggested to associatewith other than the traditional risk factors for this disease. Two common humanoncogenic viruses, human papillomavirus (HPV) and Epstein-Barr virus (EBV)are connected to certain types of SCCHN, in oropharynx and nasopharynxrespectively. The receptor programmed cell death 1 (PD)-1 and its ligandprogrammed cell death ligand 1 (PD-L1) are particularly relevant in immunecheckpoint control, and elevated levels have been seen in various cancer types. Alink between hyperlipidemia and cancer risk has previously been suggested. Theaim of this thesis was to investigate risk factors and prognostic features forSCCHN, by focusing on EBV, PD-L1 and serum lipoproteins.Materials and methods: Ninety-eight cases of SCCOT and 15 cases of tonsillarsquamous cell carcinoma were examined for the presence of EBV-encodedribonucleic acids (EBERs), EBV deoxyribonucleic acid (DNA) and the proteinEBV-encoded nuclear antigen-1 (EBNA-1), using in situ hybridisation,polymerase chain reaction (PCR) and immunohistochemistry respectively. Onehundred and one cases of SCCOT were examined for expression of PD-L1 intumour and surrounding immune cells using Ventana SP263immunohistochemistry assay and a QuickScore (QS) method. An estimation oftumour-infiltrating immune cells was also performed in 25 of the patients.Circulating levels of PD-L1 were measured using an electrochemiluminescenceassay platform in serum from 30 patients. Finally, serum samples from 106patients and 28 healthy controls were investigated for levels of total cholesterol,low-density lipoprotein (LDL), high-density lipoprotein (HDL), triglycerides andlipoprotein(a).Results: In the first study, using an in situ hybridisation kit no EBER transcriptswere detected. No EBV DNA was identified with PCR analysis, andimmunohistochemistry for EBNA-1 was also negative. In the second study, highertumour cell PD-L1 levels were found in females than males (p = 0.019). Forpatients with low PD-L1 in tumour cells, better survival was shown in males thanfemales (overall survival p = 0.021, disease-free survival p = 0.020). Tumourinfiltrating natural killer (NK) T cells, immature dendritic cells (DCs) and M1macrophages correlated positively with tumour cell PD-L1 (p < 0.05). In the laststudy, the only lipoprotein showing significant difference in concentration iiibetween healthy controls and patients was HDL (p = 0.012). Kaplan-Meiersurvival curves showed that patients with high levels of total cholesterol or LDLhad better survival than patients with normal levels (p = 0.028 and p = 0.007respectively). Adjusting for the effects of age at diagnosis, TNM stage and weightchange, multivariate Cox regression models showed LDL to be an independentprognostic factor for both overall (p = 0.010) and disease-free survival (p =0.018).Conclusion: We excluded EBV as a potential player in SCCOT in both old andyoung patients and highlight the importance of appropriate controls for EBVencoded RNA in-situ hybridization (EBER-ISH) when investigating EBV inhuman diseases. Regarding PD-L1, our data supported the significance of genderon tumour cell PD-L1 expression and demonstrated combined effects of genderand PD-L1 levels on clinical outcome in patients with SCCOT. Data also indicatedthe involvement of specific immune cell types in PD-L1-regulated immuneevasion. Looking at serum lipoproteins, we found high LDL levels to be beneficialfor survival outcome in patients with SCCHN. Furthermore, the use of cholesterollowering medicine for prevention or management of SCCHN needs to be carefullyevaluated.
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| 14. |
- Browall, Maria, et al.
(author)
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Information needs of women with recently diagnosed ovarian cancer - A longitudinal study
- 2004
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In: European Journal of Oncology Nursing. - : Elsevier. - 1462-3889 .- 1532-2122. ; 8:3, s. 200-207
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Journal article (peer-reviewed)abstract
- The aim of this study was to investigate the information needs among patients with ovarian cancer and whether these information needs change over time. The information needs were evaluated three times, through structured interviews, and were based on the paired comparison approach developed by Degner and colleagues. A consecutive sample of patients (n=82) with recently diagnosed ovarian cancer was asked to participate.Sixty-four patients (78%) chose to participate. The three different measurements of participants' information needs revealed only small changes in these needs. The three most important information needs, in all measurements, were information about the likelihood of cure, information about the stage and spreading of the disease, and information about different treatment options. Information regarding sexual attractiveness was the lowest ranked item in all measurements. Regarding subgroups (age, education) the only significant difference throughout all measurements was that younger patients rated issues of sexual attractiveness higher than older patients (p=0.005).In this longitudinal study patients with ovarian cancer ranked information about the disease and its treatment (i.e. likelihood of cure, stage of disease, and treatment options) highest, and information about psychosocial aspects and self-care lowest. These findings are in accordance with the results from studies of women diagnosed with other types of cancer, which used the same methodology. © 2004 Elsevier Ltd. All rights reserved.
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| 15. |
- Lönnbro-Widgren, Jennie, et al.
(author)
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Glomerular IgG subclasses in idiopathic and malignancy-associated membranous nephropathy
- 2015
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In: Clinical Kidney Journal. - : Oxford University Press (OUP). - 1753-0784 .- 1753-0792 .- 2048-8505 .- 2048-8513. ; 8:4, s. 433-439
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Journal article (peer-reviewed)abstract
- Background: In idiopathic membranous nephropathy (MN), antibodies directed towards the glomerular phospholipase A2 receptor (PLA2R) have mainly been reported to be of IgG4 subclass. However, the role of the different IgG subclasses in the pathogenesis of MN, both in idiopathic MN and in secondary cases, is still unclear. In this retrospective study, we test the hypothesis that the absence of glomerular IgG4 and PLA2R in patients with MN indicates malignant disease. Methods: The distribution pattern of glomerular IgG subclasses and PLA2Rwas studied in 69 patients with idiopathicMNand 16 patients with malignancy-associated MN who were followed up for a mean of 83 months. Results: A significant correlation between the absence of IgG4 and PLA2R and malignancy-associatedMNwas found. Thus, IgG4 was positive in 45 of 69 patients (65%) with idiopathicMNbut only in 5 of 16 patients (31%) with malignancy-associated MN. The other IgG subclasses did not differ statistically between the groups, IgG2-positivity being present in more than 94% of patients in both groups. Thirty-five of 63 patients (56%) with idiopathic MN and 3 of 16 (19%) patients with malignancy-associated MN had glomerular deposits of PLA2R. Conclusions: We have found that the absence of glomerular IgG4 and PLA2R iscommonin patients with malignancy-associated MN. In our material, IgG2 could not be used as a marker of underlying malignant disease. Finally, neither IgG1 nor IgG3 seems to be involved in the pathogenesis of MN. © The Author 2015.
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| 16. |
- Tzortzatos, G., et al.
(author)
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The gynecological surveillance of women with Lynch Syndrome in Sweden
- 2015
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In: Gynecologic Oncology. - : Elsevier BV. - 0090-8258 .- 1095-6859. ; 25:9, s. 1111-1111
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Journal article (peer-reviewed)abstract
- Objective. Women with Lynch syndrome (LS) have up to a 60% lifetime risk of endometrial cancer (EC) and up to a 24% risk of ovarian cancer (OC). Gynecological surveillance is recommended, but the benefit and how it should be performed remain unclear. The purpose of this study was to assess diagnostic modalities for gynecological screening of LS patients in Sweden and clinical outcome. Methods. A retrospective nationwide study of 170 women with molecularly confirmed LS. Data including gynecological LS screening history, biopsy results (if any), genetic records, number of screening visits, results from screening including transvaginal ultrasound (TVUS), endometrial biopsy (EB), blood test for tumor marker cancer antigen (CA) 125, prophylactic surgery including age at procedure, and setting from which screening data were obtained from medical records. Results. A total of 117 women were eligible for gynecological screening and of these, 86 patients attended screening visits. Of these, 41 underwent prophylactic hysterectomy and/or bilateral salpingo-oophorectomy. Two patients (4.9%) were diagnosed with EC and two (4.9%) with precancerous lesions in conjunction with prophylactic surgery. Total incidence of gynecological cancer in the surveillance group (45 women) was 20% EC, 4% OC. Five patients had endometrial cancer or complex hyperplasia with atypia (n = 2) detected by endometrial biopsy. Four additional cases were detected due to interval bleeding. Both cases of ovarian cancer were detected by transvaginal ultrasound in patients with ovarian cysts under surveillance. The youngest woman with endometrial cancer was diagnosed at 35 years of age, before she was aware of her diagnosis of Lynch syndrome. Conclusions. Gynecological surveillance of women with Lynch syndrome may lead to earlier detection of precancerous lesions, which might have some impact on the morbidity from endometrial cancer although further studies are needed to prove this. Prophylactic hysterectomy with or without bilateral salpingo-oophorectomy reduces the cancer incidence. A practical approach to surveillance in Lynch syndrome women would be to offer annual surveillance beginning at age 30 years including probably both TVUS and EB in order to increase diagnostic yield with prospective data registry for follow-up studies. Prophylactic surgery could be performed at a suitable age after childbearing to obtain a balance between reducing the risk of cancer and minimizing long-term complications from premature menopause.
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| 17. |
- Browall, Maria, et al.
(author)
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The course of health related quality of life in postmenopausal women with breast cancer from breast surgery and up to five years post-treatment
- 2013
-
In: Breast. - : Elsevier. - 0960-9776 .- 1532-3080. ; 49, s. S344-S345
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Journal article (peer-reviewed)abstract
- Background: Previous studies include too few patients over 70 years to be able to assess treatment effects on Health Related Quality Of Life (HRQOL) in the older age group. We aimed to follow HRQOL in postmenopausal women (55-80 years) with breast cancer receiving adjuvant treatment, until five years post-treatment, and compare with a general population.Patients and methods: The patient sample included 150 women (adjuvant CT n=75 and RT n=75) and two reference samples from the Swedish SF-36 norm database.Results: Data from baseline showed significantly higher levels of physical functioning and general health among the patients compared to the reference sample, and significantly lower levels of bodily pain, emotional role functioning and mental health. Longitudinal analyses showed significant changes in all scales, and three different patterns (a decrease-stable, a decrease-increase, and a stable- increase pattern) were identified.Conclusion: Postmenopausal women seem to successfully manage the effects of adjuvant treatment on HRQOL.
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| 18. |
- Wahlin, Björn Engelbrekt, et al.
(author)
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T Cells in Tumors and Blood Predict Outcome in Follicular Lymphoma Treated with Rituximab
- 2011
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In: Clinical Cancer Research. - : American Association for Cancer Research. - 1078-0432 .- 1557-3265. ; 17:12, s. 4136-4144
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Journal article (peer-reviewed)abstract
- PURPOSE: T cells influence outcome in follicular lymphoma, but their contributions seem to be modified by therapy. Their impact in patients receiving rituximab without chemotherapy is unknown. EXPERIMENTAL DESIGN: Using flow cytometry, we evaluated the T cells in tumors and/or blood in a total of 250 follicular lymphoma patients included in two Nordic Lymphoma Group randomized trials that compared single rituximab with IFN-α2a-rituximab combinations. RESULTS: In univariate analysis, higher levels of CD3(+), CD4(+), and CD8(+) T cells in both tumors and blood correlated with superior treatment responses, and in multivariate analysis, tumor-CD3(+) (P = 0.011) and blood-CD4(+) (P = 0.029) cells were independent. CD4(+) cells were favorable regardless of treatment arm, but CD8(+) cells were favorable only in patients treated with single rituximab, because IFN-α2a improved responses especially in patients with low CD8(+) cell levels. Higher levels of blood-CD3(+) (P = 0.003) and blood-CD4(+) (P = 0.046) cells predicted longer overall survival, and higher levels of blood-CD8(+) cells longer times to next treatment (P = 0.046). CONCLUSIONS: We conclude that therapeutic effects of rituximab are augmented by tumor-associated T cells for rapid responses and by systemic T cells for sustained responses. CD4(+) and CD8(+) cells are both favorable in patients treated with rituximab. IFN-α2a abrogates the negative impact of few CD8(+) cells.
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| 19. |
- Berbyuk Lindström, Nataliya, 1978, et al.
(author)
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Person- and Family-Centeredness in Ethiopian Cancer Care: Improving Communication, Ethics, Decision Making and Health
- 2020
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In: JMIR Research Protocols. - : JMIR Publications Inc.. - 1929-0748. ; 9:5
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Journal article (peer-reviewed)abstract
- BACKGROUND: Cancer is a major burden in Ethiopia. The Oncology Department of Tikur Anbessa (Black Lion) Specialized Hospital (TASH) in Addis Ababa is the country's sole specialist unit for cancer care. With only a handful of oncologists, a lack of resources, and a huge patient load, the work is challenging, especially in terms of achieving effective and ethical patient consultations. Patients, usually accompanied by family members, often wait for a long time to receive medical attention and frequently depart without treatment. Handling consultations effectively is essential in order to help patients as much as possible within such limitations. OBJECTIVE: The project addresses three main aims: (1) to enhance and expand the understanding of communicative and associated ethical challenges in Ethiopian cancer care; (2) to enhance and expand the understanding of the implications and use of person- and family-centered solutions to address such communicative challenges in practice, and (3) to plan and evaluate interventions in this area. METHODS: This project develops and consolidates a research collaboration to better understand and mitigate the communicative challenges in Ethiopian cancer care, with a focus on the handling and sharing of decision making, and ethical tensions between patients, staff, and family. Using theoretical models from linguistics, health communication, and health care ethics, multiple sources of data will be analyzed. Data sources currently include semi-structured interviews with the Ethiopian staff, patients, and family caregivers (91), survey data on cancer awareness (150) and attitudes to breaking bad news (450), and video-recordings of medical consultations (45). In addition, we will also develop clinical and methodological solutions to formulate educational interventions. RESULTS: The project was awarded funding by the Swedish Research Council in December 2017 for the period 2018-2021. The research ethics board in Sweden and in Ethiopia approved the conduct of the project in May 2018. The results from the studies will be published in 2020 and 2021. CONCLUSIONS: The project is a first step towards producing unique and seminal knowledge for the specific context of Ethiopia in the area of physician-patient communication research and ethics. It contributes to an understanding of the complexity around the role of family and ethical challenges in relation to patient involvement and decision making in Ethiopia. Improved knowledge in this area can provide a fundamental model for ways to improve cancer care in many other low resource settings in Africa and the Middle East, which share central cultural prerequisites (such as a strong patriarchal family structure, combined with strong and devout religiosity). The project will also serve to develop greater understanding about current challenges in Western health systems associated with greater family and patient participation in decision making. In addition, the project will also contribute to improving the education of Ethiopian health professionals working in cancer care by developing a training program to help them better understand and respond to identified challenges associated with communication.
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| 20. |
- Pourhamidi, Kaveh, et al.
(author)
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Evaluation of clinical tools and their diagnostic use in distal symmetric polyneuropathy
- 2014
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In: Primary care diabetes. - : Elsevier. - 1878-0210 .- 1751-9918. ; 8:1, s. 77-84
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Journal article (peer-reviewed)abstract
- AIMS: To compare the diagnostic usefulness of tuning fork, monofilament, biothesiometer and skin biopsies in peripheral neuropathy in individuals with varying glucose metabolism.METHODS: Normoglycaemic, impaired glucose tolerance (IGT) and type 2 diabetes (T2DM) individuals were recruited. Nerve conduction studies (NCS) and thermal threshold tests were performed. Vibrotactile sense was tested with a biothesiometer and a 128-Hz tuning fork. Touch/pressure perception was examined with a 10-g monofilament. Skin biopsies were performed and intraepidermal nerve fibres were quantified. Distal symmetric polyneuropathy (DSPN) was defined as neuropathy disability score ≥2 and abnormal NCS. Thermal threshold tests were used to define small nerve fibre neuropathy (sDSPN) in cases where NCS (large nerve fibres) were normal.RESULTS: The prevalence of DSPN and sDSPN in the whole group (n=119) was 18% and 23%, respectively. For the biothesiometer, a cut-off of ≥24.5V had a sensitivity of 82% and specificity of 70% (AUC=0.81, 95% CI 0.71-0.91) when evaluating DSPN. An intraepidermal nerve fibre density cut-off of ≤3.39fibres/mm showed a sensitivity of 74% and specificity of 70% in the detection of sDSPN, whereas the sensitivity of the tuning fork and the biothesiometer were relatively low, 46% and 67%, respectively. When combining skin biopsies with the tuning fork, 10 more sDSPN cases were identified. Adding skin biopsy to the combination of the tuning fork and biothesiometer increased the sensitivity of finding sDSPN cases, but not DSPN, from 81% to 93%.CONCLUSION: Using a biothesiometer in clinical routine might be a sensitive method to detect large nerve fibre dysfunction in the lower extremity, whereas skin biopsies in combination with methods measuring vibrotactile sense could increase the diagnostic sensitivity of detecting peripheral neuropathy at an early stage.
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