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Ivanova E, Fondberg R, Flygare O, Sannemalm M, Asplund S, Dahlén S, Sampaio F, Andersson E, Mataix-Cols D, Ivanov VZ, Rück C. Study protocol for a single-blind, parallel-group, randomised, controlled non-inferiority trial of 4-day intensive versus standard cognitive behavioural therapy for adults with obsessive-compulsive disorder. BMJ Open 2023; 13:e076361. [PMID: 38101824 PMCID: PMC10729159 DOI: 10.1136/bmjopen-2023-076361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 10/31/2023] [Indexed: 12/17/2023] Open
Abstract
INTRODUCTION Individual cognitive behavioural therapy (CBT) with exposure and response prevention is an effective treatment for obsessive-compulsive disorder (OCD). However, individual CBT is costly and time-consuming, requiring weekly therapy sessions for 3-4 months. A 4-day intensive version of CBT for OCD delivered in group format has been recently developed in Norway (Bergen 4-day treatment, B4DT). B4DT has shown promising results in several uncontrolled and one small, randomised trial, but its non-inferiority to the gold standard treatment has not been established. METHODS AND ANALYSIS This single-blind, randomised controlled trial including 120 patients (60 per arm) will compare B4DT to individual CBT. The primary outcome is the blind assessor-rated Yale-Brown Obsessive Compulsive Scale (Y-BOCS). We hypothesise that B4DT will be non-inferior to gold standard CBT 15 weeks after treatment start. The non-inferiority margin is set at four points on the Y-BOCS. Secondary outcomes include time to treatment response, cost-effectiveness, response and remission rates, drop-out rates and adverse events. ETHICS AND DISSEMINATION This study has been approved by the Swedish Ethical Review Authority. Hypotheses were specified and analysis code published before data collection started. Results from all analyses will be reported in accordance with the Consolidated Standards of Reporting Trials statement for non-pharmacological trials and Consolidated Health Economic Evaluation Reporting Standards irrespective of outcome. TRIAL REGISTRATION NUMBER NCT05608278.
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Affiliation(s)
- Ekaterina Ivanova
- Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet & Stockholm Health Care Services, Stockholm, Sweden
| | - Robin Fondberg
- Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Oskar Flygare
- Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet & Stockholm Health Care Services, Stockholm, Sweden
| | - Max Sannemalm
- Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet & Stockholm Health Care Services, Stockholm, Sweden
| | - Sofia Asplund
- Stockholm Health Care Services, Region Stockholm, Stockholm, Sweden
| | - Sofia Dahlén
- Stockholm Health Care Services, Region Stockholm, Stockholm, Sweden
| | - Filipa Sampaio
- Department of Public Health and Caring Sciences, Uppsala University, Uppsala, Sweden
| | - Erik Andersson
- Division of Psychology, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - David Mataix-Cols
- Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet & Stockholm Health Care Services, Stockholm, Sweden
- Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Volen Z Ivanov
- Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet & Stockholm Health Care Services, Stockholm, Sweden
| | - Christian Rück
- Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet & Stockholm Health Care Services, Stockholm, Sweden
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Asplund S, Lindgren BM, Åström S, Hedlund M, Åhlin J. Organizational and psychosocial environmental work factors associated with self-rated exhaustion disorder among municipal employees in rural northern Sweden. Work 2023; 75:1215-1229. [PMID: 36776096 PMCID: PMC10473146 DOI: 10.3233/wor-220225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 10/06/2022] [Indexed: 02/10/2023] Open
Abstract
BACKGROUND Research indicates that good organizational and psychosocial environments are vital to well-functioning workplaces and employee health. Working in the municipal sector and in the rural context may contribute to more health problems, poorer organizational and psychosocial work environments, and higher sick-leave rates. OBJECTIVE The aim of this study was to explore organizational and psychosocial environmental work factors among municipal employees with or without self-rated exhaustion disorder (s-ED) in rural northern Sweden. METHODS The Modern Work Life Questionnaire and the Self-Rated Exhaustion Disorder Scale were used among 1093 municipal employees. RESULTS The results showed that there were significant differences between the s-ED and the non-s-ED group in all but one of the organizational and psychosocial environmental work factors. Various demands, i.e. quantitative, emotional, intellectual, and IT demands were some factors associated with the s-ED group. Social support, resources, and time for work and reflection were some factors associated with the non-s-ED group. Both the s-ED and the non-s-ED groups assessed significantly higher emotional demands and less resources compared to national reference values. CONCLUSION Findings from this study are relevant to a better understanding what organizational and psychosocial work environmental work factor the employer need to pay extra attention to. Addressing risk and protective factors in the work environment could tribute to promote occupational well-being, preventing exhaustion disorder and long-term sick leave among municipal employees in rural northern Sweden.
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Affiliation(s)
- Sofia Asplund
- Department of Nursing, Umeå University, Umeå, Sweden
| | | | - Sture Åström
- Department of Nursing, Umeå University, Umeå, Sweden
| | - Mattias Hedlund
- Department of Community Medicine and Rehabilitation, Umeå University, Umeå, Sweden
| | - Johan Åhlin
- Department of Nursing, Umeå University, Umeå, Sweden
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Asplund S, Åhlin J, Åström S, Lindgren BM. Experiences of work-related stress among highly stressed municipal employees in rural northern Sweden. Int J Qual Stud Health Well-being 2022; 17:2056957. [PMID: 35350958 PMCID: PMC8973353 DOI: 10.1080/17482631.2022.2056957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/29/2022] Open
Affiliation(s)
- Sofia Asplund
- Department of Nursing, Umeå University, Umeå, Sweden
| | - Johan Åhlin
- Department of Nursing, Umeå University, Umeå, Sweden
| | - Sture Åström
- Department of Nursing, Umeå University, Umeå, Sweden
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Abstract
PURPOSE The purpose of this study was to describe experiences of being a manager in the municipal sector in rural northern Sweden. METHODS Semi-structured interviews were performed with 15 managers working in the municipal sector. The interviews were subjected to inductive qualitative content analysis. RESULTS The managers' experiences were interpreted in the main theme, Striving for stability on shaky ground. They struggled within slimmed-down organizations with substitute shortages and reduced means. They expressed being burdened by conflicting demands, a work overload, work conflicts and a requirement to be present. They had to endure the negative consequences of working in small municipalities, and handling health and family life impairments. The managers expressed the importance of being strengthened by inner and outer resources, such as being motivated, having social support and finding strategies to cope. They also expressed benefits of working in small municipalities, such as great opportunities to influence and efficiency in decision-making. CONCLUSION This study illuminates managers' adverse psychosocial working conditions, insights into working in a small municipality in the rural context and also the importance of organizational support. Future studies could focus on applying adapted workplace support interventions among managers in the municipal sector in rural northern Sweden.
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Affiliation(s)
- Sofia Asplund
- Department of Nursing, Umeå University, Umeå, Sweden,CONTACT Sofia Asplund Department of Nursing, The Biology Building, Umeå University, UmeåSE-90187, Sweden
| | - Johan Åhlin
- Department of Nursing, Umeå University, Umeå, Sweden
| | - Sture Åström
- Department of Nursing, Umeå University, Umeå, Sweden
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Persson Asplund R, Asplund S, von Buxhoeveden H, Delby H, Eriksson K, Svenning Gerhardsson M, Palm J, Skyttberg T, Torstensson J, Ljótsson B, Carlbring P, Andersson G. Work-focused versus generic internet-based interventions for employees with stress-related disorders: A randomized controlled trial (Preprint). J Med Internet Res 2022; 25:e34446. [PMID: 37097739 PMCID: PMC10170369 DOI: 10.2196/34446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Revised: 08/22/2022] [Accepted: 01/13/2023] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND In recent decades, stress-related disorders have received more attention, with an increasing prevalence, especially within the working population. The internet provides new options for broad dissemination, and a growing body of evidence suggests that web-based interventions for stress might be effective. However, few studies have examined the efficacy of interventions in clinical samples and work-related outcomes. OBJECTIVE The aim of this study was to evaluate the efficacy of an internet-based cognitive behavioral intervention for stress-related disorders integrating work-related aspects (work-focused and internet-based cognitive behavioral therapy [W-iCBT]), compared with a generic internet-based cognitive behavioral therapy (iCBT) group and a waitlist control (WLC) group. METHODS In this trial, 182 employees, mainly employed in the health care, IT, or educational sector, who fulfilled the criteria for a stress-related disorder, were randomized to a 10-week W-iCBT (n=61, 33.5%), generic iCBT (n=61, 33.5%), or WLC (n=60, 33%). Self-rated questionnaires on perceived stress, burnout, exhaustion, and other mental health- and work-related outcomes were administered before and after the treatment and at 6- and 12-month follow-ups. RESULTS Compared with the WLC group, participants of the W-iCBT and iCBT groups showed an equal and significant reduction in the primary outcome (Shirom-Melamed Burnout Questionnaire [SMBQ]) from pretreatment to posttreatment assessment (Cohen d=1.00 and 0.83, respectively) and at the 6-month follow-up (Cohen d=0.74 and 0.74, respectively). Significant moderate-to-large effect sizes were also found in the secondary health- and work-related outcomes. The W-iCBT was the only group that exhibited significant effects on work ability and short-term sickness absence. Short-term sickness absence was 445 days lower than the WLC group and 324 days lower than the iCBT intervention group. However, no significant differences were found in terms of work experience or long-term sick leave. CONCLUSIONS The work-focused and generic iCBT interventions proved to be superior compared with the control condition in reducing chronic stress and several other mental health-related symptoms. Interestingly, effects on work ability and short-term sickness absence were only seen between the W-iCBT intervention and the WLC groups. These preliminary results are promising, indicating that treatments that include work aspects may have the potential to accelerate recovery and reduce short-term sickness absence because of stress-related disorders. TRIAL REGISTRATION ClinicalTrials.gov NCT05240495; https://clinicaltrials.gov/ct2/show/NCT05240495 (retrospectively registered).
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Affiliation(s)
- Robert Persson Asplund
- Department of Behavioural Sciences and Learning, Linköping University, Linköping, Sweden
| | - Sofia Asplund
- Department of Psychology, Uppsala University, Uppsala, Sweden
| | - Helene von Buxhoeveden
- Department of Behavioural Sciences and Learning, Linköping University, Linköping, Sweden
| | - Hanna Delby
- Department of Behavioural Sciences and Learning, Linköping University, Linköping, Sweden
| | - Karin Eriksson
- Department of Behavioural Sciences and Learning, Linköping University, Linköping, Sweden
| | | | - Joachim Palm
- Department of Behavioural Sciences and Learning, Linköping University, Linköping, Sweden
| | - Thea Skyttberg
- Department of Psychology, Uppsala University, Uppsala, Sweden
| | - Julia Torstensson
- Department of Behavioural Sciences and Learning, Linköping University, Linköping, Sweden
| | - Brjánn Ljótsson
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Per Carlbring
- Department of Psychology, Stockholm University, Stockholm, Sweden
| | - Gerhard Andersson
- Department of Behavioural Sciences and Learning, Linköping University, Linköping, Sweden
- Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden
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Asplund S, Åhlin J, Åström S, Hedlund M, Lindgren BM, Ericson-Lidman E. Self-rated exhaustion disorder and associated health-related factors among municipal employees in rural areas of northern Sweden. Int Arch Occup Environ Health 2020; 94:659-668. [PMID: 33296011 PMCID: PMC8068702 DOI: 10.1007/s00420-020-01617-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 11/18/2020] [Indexed: 11/30/2022]
Abstract
OBJECTIVE The aims of this study among municipal employees in rural areas of northern Sweden were to assess the prevalence of self-rated exhaustion disorder (s-ED), describe plausible between-group differences in self-reported health-related factors among employees with or without s-ED, and identify health-related factors associated with s-ED. METHODS In a cross-sectional study, data were collected from 1093 municipal employees (76.1% women) in two rural areas using an instrument measuring s-ED and health variables drawn from the Modern Worklife Questionnaire (MWQ), the Perceived Stress Scale (PSS), and the National Board of Health and Welfare's questions about physical activity. Comparisons were made between an s-ED and a non-s-ED group. Health-related factors associated with s-ED were identified through a logistic regression. RESULTS Self-rated exhaustion disorder was reported by 21.5% of the participants. Health-related factors associated with s-ED were cognitive problems, sleep problems, depressive symptoms, high stress, poor self-rated health, and stomach problems. There was no statistically significant difference in the prevalence of participants who met the criteria of physical activity among s-ED and non-s-ED group. CONCLUSION Findings from this study suggest that s-ED is more common among municipal employees in rural areas than in other working populations in Sweden. Several health-related factors were associated with s-ED. Regular use of a self-rated instrument in evaluating the organizational and social work environment can identify people at risk of developing exhaustion disorder and requiring long-term sick leave.
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Affiliation(s)
- Sofia Asplund
- Department of Nursing, Umeå University, 90187, Umeå, Sweden.
| | - Johan Åhlin
- Department of Nursing, Umeå University, 90187, Umeå, Sweden
| | - Sture Åström
- Department of Nursing, Umeå University, 90187, Umeå, Sweden
| | - Mattias Hedlund
- Department of Community Medicine and Rehabilitation, Umeå University, Umeå, Sweden
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Stroikin Y, Johansson U, Asplund S, Ollinger K. Increased resistance of lipofuscin-loaded prematurely senescent fibroblasts to starvation-induced programmed cell death. Biogerontology 2006; 8:43-53. [PMID: 16850182 DOI: 10.1007/s10522-006-9029-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2005] [Accepted: 05/27/2006] [Indexed: 11/29/2022]
Abstract
Alterations of cellular structures often found in ageing cells is mainly the result of production of reactive oxygen species and a consequence of aerobic life. Both oxidative stress and decreased degradative capacity of lysosomal system cause accumulation of intralysosomal age-related pigment called lipofuscin. To investigate the influence of lipofuscin on cell function, we compared survival of lipofuscin-loaded and control human fibroblasts following complete starvation induced by exposure to phosphate-buffered saline (PBS). Starving of control fibroblasts resulted in lysosomal alkalinisation, relocation of cathepsin D to the cytosol, caspase-3 activation and, finally, cell death, which became evident 72 h after the start of exposure to PBS. Increase of lysosomal pH was significantly less prominent in lipofuscin-loaded cells than in controls and was accompanied neither by leakage of cathepsin D nor by caspase-3 activation even 96 h after the initiation of starvation. Suppression of autophagy by 3-methyladenine (3-MA) accelerated cell death, while inhibition of cathepsin D delayed it, implying an important role of autophagy in cell survival during starvation and showing the involvement of lysosomes in starvation-induced cell death. Disturbed apoptotic response found in lipofuscin-loaded cells can be interpreted as an example of hormesis--an adaptation to low doses of otherwise harmful agents, in this case of lipofuscin, which has a protective effect at moderate amounts but becomes toxic at large quantities.
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Affiliation(s)
- Yuri Stroikin
- Faculty of Health Sciences, Division of Experimental Pathology, Department of Neuroscience and Locomotion, Linköping University, Sweden.
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Abstract
OBJECTIVES To compare the dental health of a group of children with complex congenital heart disease with that of age and gender matched healthy controls. DESIGN Case-control study. SETTING Faculty of Medicine and Odontology/Pediatric cardiology and Pedodontics, Umeå University, Sweden. SAMPLE AND METHODS All the cases and their controls lived in the county of Västerbotten in northern Sweden. Each group comprised 41 children with a mean age of 6.5 years. Data were collected from medical and dental records while all bitewing radiographs were read separately by one of the authors. RESULTS Children with congenital heart disease had significantly more caries in their primary teeth than the control group. The mean dmfs-value was 5.2 +/- 7.0 in the cardiac group compared to 2.2 +/- 3.5 in the control group (P < 0.05). Twenty-six of the children had all four 6-year-molars, and their mean DMFS-values were 0.9 +/- 1.9 in the cardiac group compared to 0.3 +/- 0.6 in the control group (P > 0.05). The children with congenital heart disease had received more caries prevention based on the use of fluorides than the control group. There was a significant correlation between the number of fluoride varnish treatments and the dmfs value of the child (r = 0.411, P < 0.01). Fifty-two per cent of the children in the cardiac group had been prescribed fluoride tablets on one or more occasions compared to 17% in the control group (P < 0.01). Number of months on digoxin medication and the dmfs-value had a significant correlation (r = 0.368, P < 0.05). Ten of the children had been on digoxin medication between 6 and 87 months; this subgroup had a mean dmfs-value of 10.1 +/- 8.5. CONCLUSION Swedish children with complex congenital heart disease have poorer dental health than healthy age and gender matched controls in spite of intensive preventive efforts. In many cases, intervention had been given when caries were present. A closer cooperation between paediatric cardiology and paediatric dentistry is needed.
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Affiliation(s)
- C Stecksén-Blicks
- Pediatric Dentistry, Faculty of Medicine and Odontology, Umeå University, S-901 85 Umeå, Sweden.
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Lagerby M, Asplund S, Ringqvist I. Cannulated screws for fixation of femoral neck fractures. No difference between Uppsala screws and Richards screws in a randomized prospective study of 268 cases. Acta Orthop Scand 1998; 69:387-91. [PMID: 9798447 DOI: 10.3109/17453679808999052] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
We compared 2 types of cannulated hip screws in a randomized prospective study of 268 femoral neck fractures. Complications were defined as penetration of the screw into the joint, early redisplacement, nonunion or segmental collapse. During the first year, complications were noted in 31 of 130 patients treated with 3 Richards screws and in 34 of 138 patients treated with 2 Uppsala screws. Secondary arthroplasty was performed in 17 cases in the Richards group and in 16 cases in the Uppsala group. Clinical outcome did not differ between the groups.
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Affiliation(s)
- M Lagerby
- Department of Orthopedics, Central Hospital, Västerås, Sweden
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Asplund S, Gramlich TL. Chronic mucosal changes of the colon in graft-versus-host disease. Mod Pathol 1998; 11:513-5. [PMID: 9647587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The histologic features of acute graft-versus-host disease (GVHD) of the colon are well documented, but chronic mucosal changes associated with GVHD are poorly described. We report here the clinicopathologic findings from five patients with a history of bone marrow transplantation in which colonoscopic biopsies showed chronic mucosal changes reminiscent of chronic idiopathic inflammatory bowel disease (IBD). The patients ranged in age from 2.5 to 31 years. Bone marrow transplantations were performed for leukemia (3 patients), Hodgkin's disease (1 patient), and metachromatic leukodystrophy (1 patient). Endoscopy was performed because of complaints of abdominal pain and diarrhea in all of the five patients. The mean time after transplantation in which histologic features of chronicity were identified was 5.8 months (range, 3-16 mo). All of the five patients had prior colonic biopsies showing acute GVHD. One patient had a previous episode of cytomegalovirus infection. Chronicity was characterized by mild-to-moderate architectural distortion, ie., villiform surface with crypt branching and atrophy, similar to that seen in chronic idiopathic IBD. The lamina propria was hypocellular, with prominent small blood vessels. Focal fibrosis of the lamina propria was noted. One patient had active cryptitis. Superimposed changes of acute GVHD were mild to absent. None of the patients had a history of IBD before receiving the bone marrow transplant. Changes associated with chronicity can be observed in mucosal biopsy specimens from patients with GVHD. It is uncertain whether these changes are directly caused by GVHD or are the result of superimposed infections. The association of chronic mucosal change in the setting of GVHD with the clinical diagnosis of chronic GVHD needs additional investigation.
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Affiliation(s)
- S Asplund
- Department of Anatomic Pathology, Cleveland Clinic Foundation, Ohio 44195, USA
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Kurtycz DF, Logrono R, Harris C, Asplund S, O'Donnell L. Use of fine needle aspiration for fibroblast culture. Pediatr Pathol Lab Med 1998; 18:35-39. [PMID: 9566280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Diagnosis in certain metabolic diseases or the establishment of long-term reservoirs of cytogenetic material requires tissue culture of fibroblasts obtained by skin snip or punch biopsy. Fine needle aspiration biopsy (FNAB) was investigated as an alternative method of fibroblast collection with advantages of minimal morbidity and the potential of better patient acceptance. After flank FNAB, culture, and incubation, confluent fibroblast growth was achieved within 19 days. The number of cells produced was sufficient for potential cytogenetic or metabolic studies. Cultured fibroblasts obtained via FNAB proved to be a successful alternative to skin biopsy, with reduced trauma and better cosmetic results.
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Affiliation(s)
- D F Kurtycz
- Department of Pathology, University of Wisconsin, Madison, USA
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Jansson T, Lindman H, Nygård K, Dahlgren CV, Montelius A, Oberg-Kreuger C, Asplund S, Bergh J. Radiotherapy of breast cancer after breast-conserving surgery: an improved technique using mixed electron-photon beams with a multileaf collimator. Radiother Oncol 1998; 46:83-9. [PMID: 9488131 DOI: 10.1016/s0167-8140(97)00176-x] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND AND PURPOSE Loco-regional radiotherapy after breast cancer surgery significantly reduces the risk of recurrences. An increase of cardiac deaths for irradiated breast cancer patients has been reported in some studies, especially for women with tumours in the left breast. The aim of this study was to compare retrospectively the conventionally used technique using two opposed tangential photon beams with a modified technique using a combination of photon and electron beams to find an optimal technique with respect to dose homogeneity in the breast and surrounding regional lymph nodes and a minimal dose in the organs at risk. MATERIALS AND METHODS Thirty patients with stage II breast cancer who received different types of adjuvant systemic therapy were included in the investigation. Comparative dose planning of two techniques was performed, i.e. an isocentric technique with two photon beams with coplanar medial beam edges and a technique with one electron and three photon beams with a common isocentre for all beams aided by a multileaf collimator. RESULTS The mixed technique was selected for eight of 12 patients with left-sided breast cancers because of significantly lower doses to the heart. However, the decision-making was influenced by many factors such as dose coverage of the target volume combined with minimizing of the doses to the organs at risk and the contralateral breast. CONCLUSION The use of the mixed technique will optimize the loco-regional radiotherapy after breast-conserving surgery for many left-sided breast cancers.
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Affiliation(s)
- T Jansson
- Department of Oncology, University of Uppsala, Akademiska sjukhuset, Sweden
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Abstract
The role of mechanical factors in neonatal hip instability was studied in four experimental series of autopsy specimens. The induced hip deformation and dislocation were examined by serial cryosectioning and cryodissection. Loading of the hips at 45 degrees of flexion with moderate forces for 3 h resulted in deformation and dislocation similar to those found at autopsy in congenital dislocation of the hip. There was no macroscopic damage to the joints. Loading at 135 degrees of flexion--to simulate a breech position--also resulted in dislocation, but the cartilage deformation was less pronounced than after loading at 45 degrees of flexion. When the same hip was loaded first at 135 degrees of flexion for 3 h and then at 45 degrees of flexion for another 3 h, the findings were similar to those following loading at 45 degrees of flexion alone. Thus a redeformation of the hip had taken place during the second step of the experiment. After unloading of the deformed and dislocated hips, marked joint laxity was observed, and examination 3 h after unloading showed incomplete recovery of the deformation.
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Asplund S, Hjelmstedt A. Experimentally induced hip dislocation in vitro and in vivo. A study in newborn rabbits. Acta Orthop Scand Suppl 1983; 199:1-57. [PMID: 6340409 DOI: 10.3109/17453678309154168] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Hjelmstedt Å, Asplund S, Rauschning W. Cryodissection and cryosectioning in biomechanical studies on congenital dislocation of the hip. ACTA ACUST UNITED AC 1982. [DOI: 10.1007/bf01811185] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Hjelmstedt A, Asplund S, Rauschning W. La cryodissection et la cryosection au cours de l'étude biodynamique de la luxation congénitale de hanche. Surg Radiol Anat 1982. [DOI: 10.1007/bf01811197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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