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Jakobsen K, Andersen K, Elezaj D, Sjöstrøm D. EP-1830: Simple method on bladder filling simulation to improve the soft-tissue evaluation on CBCT. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)32265-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Abstract
The relationship between the quality of redaction and the occurrence of arthritic changes, symptoms and disability was studied in 41 Bennett’s fractures. Excellent position was obtained in five of nine fractures treated by closed reduction and plaster immobilisation, in four of six fractures treated by percutaneous K wire fixation and in 18 of 26 fractures treated by open reduction. After a median interval of 7.3 years, 15 of 18 reviewed patients with fractures healed in excellent position were free of symptoms, but this was so in only six of 13 fractures with residual displacement. The remainder had intermittent slight pain. Radiographic signs of arthritis was found in ten of 24 patients: three of 14 patients with excellent reduction and seven of ten patients with residual displacement.
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Dalgaard EG, Andersen K, Svenningsen P, Hansen PBL. Biosensor cell assay for measuring real-time aldosterone-induced release of histamine from mesenteric arteries. Acta Physiol (Oxf) 2017; 219:219-226. [PMID: 26990768 DOI: 10.1111/apha.12680] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Revised: 03/14/2016] [Accepted: 03/14/2016] [Indexed: 12/18/2022]
Abstract
AIMS The aims were to develop a method for real-time detection of histamine release and to test whether incubation with aldosterone induces histamine release from isolated, perfused mice mesenteric arteries. METHODS Fura-2-loaded HEK-293 cells transfected with the histamine H1 receptor was used as a sensitive biosensor assay for histamine release from isolated mouse mesenteric arteries. Activation of the H1 receptor by histamine was measured as an increased number of intracellular Ca2+ transient peaks using fluorescence imaging. RESULTS The developed biosensor was sensitive to histamine in physiological relevant concentrations and responded to substances released by the artery preparation. Aldosterone treatment of mesenteric arteries from wild-type mice for 50 min resulted in an increased number of intracellular Ca2+ transient peaks in the biosensor cells, which was significantly inhibited by the histamine H1 blocker pyrilamine. Mesenteric arteries from mast cell-deficient SASH mice induced similar pyrilamine-sensitive Ca2+ transient response in the biosensor cells. Mesenteric arteries from wild-type and SASH mice expressed histamine decarboxylase mRNA, indicating that mast cells are not the only source of histamine release. CONCLUSION The developed biosensor assay can measure release of substances from vascular preparations. Histamine is released from the vessel preparation in response to aldosterone treatment independently of mast cells. The assay enables us to study a new signaling mechanism for vascular responses induced by aldosterone.
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Holmskov J, Licht R, Andersen K, Bjerregaard Stage T, Mørkeberg Nilsson F, Bjerregaard Stage K, Valentin J, Bech P, Ernst Nielsen R. Diagnostic Conversion to Bipolar Disorder in Unipolar Depressed Patients Participating in Trials on Antidepressants. Eur Psychiatry 2016; 40:76-81. [DOI: 10.1016/j.eurpsy.2016.08.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Revised: 08/19/2016] [Accepted: 08/19/2016] [Indexed: 01/10/2023] Open
Abstract
AbstractObjectiveIn unipolar depressed patients participating in trials on antidepressants, we investigated if illness characteristics at baseline could predict conversion to bipolar disorder.MethodA long-term register-based follow-up study of 290 unipolar depressed patients with a mean age of 50.8 years (SD = 11.9) participating in three randomized trials on antidepressants conducted in the period 1985–1994. The independent effects of explanatory variables were examined by applying Cox regression analyses.ResultsThe overall risk of conversion was 20.7%, with a mean follow-up time of 15.2 years per patient. The risk of conversion was associated with an increasing number of previous depressive episodes at baseline, [HR 1.18, 95% CI (1.10–1.26)]. No association with gender, age, age at first depressive episode, duration of baseline episode, subtype of depression or any of the investigated HAM-D subscales included was found.LimitationsThe patients were followed-up through the Danish Psychiatric Central Research Register, which resulted in inherent limitations such as possible misclassification of outcome.ConclusionIn a sample of middle-aged hospitalized unipolar depressed patients participating in trials on antidepressants, the risk of conversion was associated with the number of previous depressive episodes. Therefore, this study emphasizes that unipolar depressed patients experiencing a relatively high number of recurrences should be followed more closely, or at least be informed about the possible increased risk of conversion.
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Nielsen RE, Lolk A, M Rodrigo-Domingo, Valentin JB, Andersen K. Antipsychotic treatment effects on cardiovascular, cancer, infection, and intentional self-harm as cause of death in patients with Alzheimer's dementia. Eur Psychiatry 2016; 42:14-23. [PMID: 28199869 PMCID: PMC7126709 DOI: 10.1016/j.eurpsy.2016.11.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Revised: 11/25/2016] [Accepted: 11/27/2016] [Indexed: 01/21/2023] Open
Abstract
Background Alzheimer's disease (AD), the most common disease causing dementia, is linked to increased mortality. However, the effect of antipsychotic use on specific causes of mortality has not yet been investigated thoroughly. Methods Utilizing the Danish nationwide registers, we defined a cohort of patients diagnosed with AD. Utilizing separate Cox regressions for specific causes of mortality, we investigated the effects of cumulative antipsychotic dosage after diagnosis and current antipsychotic exposure in the time period 2000–2011. Results In total, 45,894 patients were followed for 3,803,996 person-years. A total of 6129 cardiovascular related deaths, 2088 cancer related deaths, 1620 infection related deaths, and 28 intentional self-harm related deaths are presented. Current antipsychotic exposure increased mortality rate with HR between 1.92 and 2.31 for cardiovascular, cancer, and infection related death. Cumulative antipsychotic dosages were most commonly associated with increased rates of mortality for cardiovascular and infection as cause of death, whereas the associations were less clear with cancer and intentional self-harm as cause of death. Conclusions We showed that cumulative antipsychotic drug dosages increased mortality rates for cardiovascular and infection as cause of death. These findings highlight the need for further investigations of long-term effects of treatment and of possible sub-groups who could benefit from treatment.
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Abstract
An instrument designed to measure cancellous bone strength at the tibial and femoral condyles during total knee replacement is described and evaluated with respect to the relationship of measurements to conventional compression tests on machined specimens in a material testing machine. The instrument, referred to as an osteopenetrometer, indirectly measures the force and depth of penetration of a needle that is advanced into the cancellous bone at constant speed. A small computer controls the measuring procedure and corrects the force readings for resistance in the hydraulic system. The relationship between osteopenetrometer measurements and compression tests is best described by a power law, with correlation coefficients of approximately 0.90 when ultimate stress data were compared. A 2.5 mm pointed needle with the shaft milled to 2.3 mm to avoid friction along the needle shaft is favoured for clinical measurements since readings from different depths beneath the resection surface may then be directly compared. The error of measurement was assessed by comparison of observed and smoothed data from measurements across tibial and femoral condylar resection surfaces. Ninety-nine per cent tolerance limits of ± 3.0 MPa (compared to a range of 0–40 MPa in units peculiar to the osteopenetrometer) were found.
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Nielsen RE, Lolk A, Valentin JB, Andersen K. Cumulative dosages of antipsychotic drugs are associated with increased mortality rate in patients with Alzheimer's dementia. Acta Psychiatr Scand 2016; 134:314-20. [PMID: 27357602 DOI: 10.1111/acps.12614] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/01/2016] [Indexed: 01/22/2023]
Abstract
OBJECTIVE We wished to investigate the effects of cumulative dosages of antipsychotic drug in Alzheimer's dementia, when controlling for known risk factors, including current antipsychotic exposure, on all-cause mortality. METHOD We utilized a nationwide, population-based, retrospective cohort study design with mortality as outcome in individual patients diagnosed with Alzheimer's dementia. RESULTS We included a total of 45 894 patients and followed them for 3 803 996 person-years in total, presenting 27 894 deaths in the study population. Cumulative antipsychotic exposure increased mortality: more than 0 Daily Defined Dosage (DDDs) but less than 90: HR 2.20, 95% CI (2.14-2.27), P < 0.001; more than or equal to 90 DDDs but less than 365: HR 1.81, 95% CI (1.74-1.89), P < 0.001; more than or equal to 365 DDDs but less than 730: HR 1.38, 95% CI (1.428-1.49), P < 0.001; and more than or equal to 730 DDDs: HR 1.06, 95% CI (0.95-1.18), P = 0.322, when controlling for proxy markers of severity, somatic and mental comorbid disorders. CONCLUSION In this nationwide cohort study of 45 894 patients diagnosed with Alzheimer's dementia, we found that cumulative dosages of antipsychotic drugs were associated with increased mortality rates.
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Andersen K, Thastum M, Nørholt SE, Blomlöf J. Relative blood loss and operative time can predict length of stay following orthognathic surgery. Int J Oral Maxillofac Surg 2016; 45:1209-12. [PMID: 27267706 DOI: 10.1016/j.ijom.2016.05.015] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Revised: 03/31/2016] [Accepted: 05/19/2016] [Indexed: 11/17/2022]
Abstract
The aim of this study was to investigate the length of stay (LOS) following orthognathic surgery and thereby to establish a benchmark. The secondary aim was to identify predictors of postoperative LOS following orthognathic surgery. Patients were treated consecutively during the period 2010 to 2012. Inclusion criteria were (1) patient age ≥18 years, and (2) surgery involving a three-piece Le Fort I osteotomy, or a bilateral sagittal split osteotomy (BSSO), or bimaxillary surgery. A total of 335 patients were included. The following data were recorded: height, weight, body mass index (BMI), age, sex, operative time, intraoperative blood loss, and type of surgery. LOS was defined as the duration of time from date of surgery to date of discharge. The average LOS was 1.3 days following Le Fort I osteotomy, 1.3 days following BSSO, and 1.8 days following bimaxillary surgery. In the multivariate regression model (R(2)=0.11), predictors of a prolonged LOS were operative time (P<0.001) and relative blood loss (P=0.002). No significant effect of age, BMI, sex, or treatment on LOS was observed. The short duration of LOS found in this study supports the possibility of increasing outpatient pathways for selected patients.
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Thastum M, Andersen K, Rude K, Nørholt SE, Blomlöf J. Factors influencing intraoperative blood loss in orthognathic surgery. Int J Oral Maxillofac Surg 2016; 45:1070-3. [PMID: 27055979 DOI: 10.1016/j.ijom.2016.02.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Revised: 11/28/2015] [Accepted: 02/11/2016] [Indexed: 12/31/2022]
Abstract
This retrospective study aimed to identify factors of importance for intraoperative blood loss relative to total blood volume in patients undergoing orthognathic surgery. The study included 356 patients treated consecutively at a Danish university hospital between 1 January 2010 and 31 December 2012. Inclusion criteria were (1) patient age ≥18 years and (2) patient undergoing a three-piece Le Fort I osteotomy, a bilateral sagittal split osteotomy, or a combination of the two. The patient-specific relative blood loss was calculated as a percentage by dividing the intraoperative blood loss by the estimated preoperative total blood volume, and then correlated with body mass index (BMI), age, sex, operating time, and treatment modality in a multivariate stepwise regression analysis. Operating time (P<0.001), BMI (P<0.001), and treatment modality (P<0.001) had a significant impact on relative blood loss; no significant effect of age or sex was observed. The coefficient of determination of relative blood loss was R(2)=0.34. In conclusion, this study introduces relative blood loss as a patient-specific measure of intraoperative blood loss. Average relative blood loss in this patient sample was 6.5%. Extensive surgery, a prolonged operating time, and reduced BMI significantly increase the intraoperative relative blood loss in patients undergoing orthognathic surgery.
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Andersen K, Bogenschutz M, Bühringer G, Behrendt S, Braun B, Lizarraga C, Nielsen A. Elderly-study – treatment for alcohol problems among 60+. Eur Psychiatry 2016. [DOI: 10.1016/j.eurpsy.2016.01.992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
IntroductionThe western societies have a rapidly aging population and an increasing number of elderly with alcohol use disorders.ObjectiveThe purpose of the elderly study is to develop and test an outpatient behavior therapy program for people with an alcohol use disorders.Aim of this abstractTo investigate the association between ages, gender, drinking pattern and psychology distress.MethodThe study is a randomized study expected to enroll and treat 1000 participants aged 60+ years before April 2017; 200 in USA; 400 in Germany and 400 in Denmark. To be included in the study the participants have to fulfil the DSM-5 criteria for alcohol use disorder. All participants are examined at baseline, and at four follow up interviews. After the baseline interview all participants are randomized to Motivational Enhancement Therapy (MET); or MET followed by 8 weeks of counseling based on the Community Reinforcement Approach (CRA) with a module added to address problems relevants to elderly people.ResultsThe presentation will include baseline characteristics of the Danish participants including demographics, expectations to treatment, history of drinking in the last 90 days before baseline and their psychological distress. We have now enrolled 259 participants in the Danish database. We expect to present results from 320 patients.ConclusionThe data will present information about the profile of 60+ years’ individuals seeking treatment for alcohol use disorder, and thereby provide knowledge about which characteristics that may be important when planning treatment for this age group.Disclosure of interestThe authors have not supplied their declaration of competing interest.
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Lichtenstein M, Andersen K, Jørgensen U. Exercise addicts with injuries are in risk of depression. Eur Psychiatry 2016. [DOI: 10.1016/j.eurpsy.2016.01.1042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
IntroductionExercise addiction is characterized by increasing exercise amounts, withdrawal symptoms and lack of control. Exercisers with addiction continue to exercise in spite of pain and injury because they use exercise to regulate emotions, identity and self-esteem. How do they react to injuries?ObjectivesIt is hypothesized that exercise addiction is a risk factor for emotional distress when an injury occur due to withdrawal symptoms and lack of identity.AimsTo estimate the prevalence of exercise addiction in exercisers with injuries at the musculoskeletal system and to test the relationship between addiction and emotional distress (depression and stress).MethodsThe Exercise Addiction Inventory was used to identify exercise addiction. To measure depression and stress we used the Major Depression Inventory (MDI) and the Perceived Stress Scale (PSS). Participants (n = 694) were regular exercisers with injuries at foot, knee or shoulder at an orthopedic hospital department.ResultsThe prevalence of exercise addiction was 7.6%. We found that exercisers with addiction reported more emotional distress in terms of higher MDI-scores 18.0 (SD = 11.0) versus 11.7 (SD = 9.1); P = 0.00 and in total PSS-score 17.6 (SD = 7.2) versus 13.9 (SD = 6.8); P = 0.00. Chi2 analyses showed that 25% of the addicted exercisers met the criteria for clinical depression, while only 11% of the non-addicted exercisers were depressed; P = 0.00.ConclusionsExercisers with addiction appear at somatic departments treating musculoskeletal injuries. It is a vulnerable group characterized by elevated levels of depressive symptoms and clinical stress. We recommend to offer psychological interventions focusing on emotional distress and prevention of re-injury by reducing excessive and obsessive exercise patterns.Disclosure of interestThe authors have not supplied their declaration of competing interest.
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Kristinsdottir L, Oskarsdottir E, Bjarnason T, Hafthorsson S, Arnardottir E, Sigurdsson S, Gudnason V, Olafsson I, Thorgeirsson G, Andersen K. Prediabetes and diabetes are not related to endothelial dysfunction among patients with unstable coronary syndromes. Atherosclerosis 2015. [DOI: 10.1016/j.atherosclerosis.2015.04.789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Oskarsdottir E, Thorgeirsson G, Bjarnason T, Kristinsdottir L, Hafthorsson S, Olafsson I, Andersen K. Vitamin D levels and blood glucose regulation in patients with acute coronary syndrome in Iceland. Atherosclerosis 2015. [DOI: 10.1016/j.atherosclerosis.2015.04.464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Bjarnason T, Oskarsdottir E, Hafthorsson S, Kristinsdottir L, Skuladottir F, Kaernested B, Olafsson I, Andersen K. Diagnosis of diabetes mellitus and prediabetes is improved by repeated measurements in patients with acute coronary syndrome. Atherosclerosis 2015. [DOI: 10.1016/j.atherosclerosis.2015.04.1025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Fischer T, Andersen K, Bengtsson U, Frosch P, Gunnarsson Y, Kreilgård B, Menné T, Shaw S, Svensson L, Wilkinson J. Clinical standardization of the TRUE Test formaldehyde patch. CURRENT PROBLEMS IN DERMATOLOGY 2015; 22:24-30. [PMID: 7587329 DOI: 10.1159/000424227] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Andersen K, Pedersen TK, Svendsen P, Hauge EM, Schou S, Nørholt SE. Effect of unilateral mandibular distraction osteogenesis on mandibular morphology in rabbits with antigen-induced temporomandibular joint arthritis. Int J Oral Maxillofac Surg 2015; 44:1052-9. [PMID: 25835759 DOI: 10.1016/j.ijom.2015.03.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2014] [Revised: 01/03/2015] [Accepted: 03/10/2015] [Indexed: 10/23/2022]
Abstract
Aim was to evaluate effect of unilateral distraction osteogenesis (DO) on mandibular morphology in rabbits with antigen-induced arthritis in the temporomandibular joint (TMJ). Forty 8-week-old rabbits were divided into four groups. In groups A,C, arthritis was induced in the right TMJ. Groups A,B underwent DO. Group D served as control group. Cephalometric analysis of mandibular angle, mandibular ramus height, mandibular collum height, and total posterior mandibular height was done on CT-scans preoperatively (T0), after distraction (T1), and at euthanasia (T2). Two-factor ANOVA evaluated the effect of DO and antigen-induced arthritis. No effect of DO or arthritis was observed on mandibular angle or mandibular collum height. For T0-T1, DO increased mandibular ramus height 12.3% (95% CI 5.2-19.4%) in group B (P=0.001) and total posterior mandibular height 6.2% (95% CI 0.3-12.1%) in group A (P=0.04) and 10.0% (95% CI 4.3-15.7%) in group B (P=0.001). For T1-T2, no significant changes occurred in arthritic rabbits (group A). In conclusion, DO increased total posterior mandibular height in rabbits with arthritis. Postoperatively, no significant effect of DO was observed in rabbits with arthritis. Mandibular DO could be a viable treatment modality in patients with TMJ-arthritis.
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Kothari S, Baad-Hansen L, Andersen K, Svensson P. Neurosensory assessment in patients with total reconstruction of the temporomandibular joint. Int J Oral Maxillofac Surg 2014; 43:1096-103. [DOI: 10.1016/j.ijom.2014.05.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Revised: 03/06/2014] [Accepted: 05/09/2014] [Indexed: 10/25/2022]
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Norum JH, Andersen K, Sørlie T. Lessons learned from the intrinsic subtypes of breast cancer in the quest for precision therapy. Br J Surg 2014; 101:925-38. [PMID: 24849143 DOI: 10.1002/bjs.9562] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Accepted: 04/16/2014] [Indexed: 01/06/2023]
Abstract
BACKGROUND Wide variability in breast cancer, between patients and within each individual neoplasm, adds confounding complexity to the treatment of the disease. In clinical practice, hormone receptor status has been used to classify breast tumours and to guide treatment. Modern classification systems should take the wide tumour heterogeneity into account to improve patient outcome. METHODS This article reviews the identification of the intrinsic molecular subtypes of breast cancer, their prognostic and therapeutic implications, and the impact of tumour heterogeneity on cancer progression and treatment. The possibility of functionally addressing tumour-specific characteristics in in vivo models to inform decisions for precision therapies is also discussed. RESULTS Despite the robust breast tumour classification system provided by gene expression profiling, heterogeneity is also evident within these molecular portraits. A complicating factor in breast cancer classification is the process of selective clonality within developing neoplasms. Phenotypically and functionally distinct clones representing the intratumour heterogeneity might confuse molecular classification. Molecular portraits of the heterogeneous primary tumour might not necessarily reflect the subclone of cancer cells that causes the disease to relapse. Studies of reciprocal relationships between cancer cell subpopulations within developing tumours are therefore needed, and are possible only in genetically engineered mouse models or patient-derived xenograft models, in which the treatment-induced selection pressure on individual cell clones can be mimicked. CONCLUSION In the future, more refined classifications, based on integration of information at several molecular levels, are required to improve treatment guidelines. Large-scale translational research efforts paved the way for identification of the intrinsic subtypes, and are still fundamental for ensuring future progress in cancer care.
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Andersen K, Nørholt S, Knudsen J, Küseler A, Jensen J. Donor site morbidity after reconstruction of alveolar bone defects with mandibular symphyseal bone grafts in cleft patients—111 consecutive patients. Int J Oral Maxillofac Surg 2014; 43:428-32. [DOI: 10.1016/j.ijom.2013.09.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Revised: 07/02/2013] [Accepted: 09/10/2013] [Indexed: 11/28/2022]
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Andersen K, Christensen K, Kehlet H, Bidstrup P. (114) The effect of pain on physical functioning after breast cancer treatment: development and validation of an assessment tool. THE JOURNAL OF PAIN 2014. [DOI: 10.1016/j.jpain.2014.01.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Parbo N, Murra N, Andersen K, Buhl J, Kiil B, Nørholt S. Outcome of partial mandibular reconstruction with fibula grafts and implant-supported prostheses. Int J Oral Maxillofac Surg 2013; 42:1403-8. [DOI: 10.1016/j.ijom.2013.05.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2012] [Revised: 05/12/2013] [Accepted: 05/16/2013] [Indexed: 10/26/2022]
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Andersen K, Gammelgaard A, de Fine Licht E. Hypertrophy of the Pylorus in Adults. Acta Radiol 2013. [DOI: 10.1177/028418514602700511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Andersen K. Some Experiences with a New Method for Arthrography. Acta Radiol 2013. [DOI: 10.1177/028418514402500103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Christoffersen JC, Andersen K. Renal Papillary Necrosis. Acta Radiol 2013. [DOI: 10.1177/028418515604500105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Nielsen MH, Berg M, Pedersen AN, Andersen K, Glavicic V, Jakobsen EH, Jensen I, Josipovic M, Lorenzen EL, Nielsen HM, Stenbygaard L, Thomsen MS, Vallentin S, Zimmermann S, Offersen BV. Delineation of target volumes and organs at risk in adjuvant radiotherapy of early breast cancer: national guidelines and contouring atlas by the Danish Breast Cancer Cooperative Group. Acta Oncol 2013; 52:703-10. [PMID: 23421926 DOI: 10.3109/0284186x.2013.765064] [Citation(s) in RCA: 125] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
UNLABELLED During the past decade planning of adjuvant radiotherapy (RT) of early breast cancer has changed from two-dimensional (2D) to 3D conformal techniques. In the planning computerised tomography (CT) scan both the targets for RT and the organs at risk (OARs) are visualised, enabling an increased focus on target dose coverage and homogeneity with only minimal dose to the OARs. To ensure uniform RT in the national prospective trials of the Danish Breast Cancer Cooperative Group (DBCG), a national consensus for the delineation of clinical target volumes (CTVs) and OARs was required. MATERIAL AND METHODS A CT scan of a breast cancer patient after surgical breast conservation and axillary lymph node (LN) dissection was used for delineation. During multiple dummy-runs seven experienced radiation oncologists contoured all CTVs and OARs of interest in adjuvant breast RT. Two meetings were held in the DBCG Radiotherapy Committee to discuss the contouring and to approve a final consensus. The Dice similarity coefficient (DSC) was used to evaluate the delineation agreement before and after the consensus. RESULTS The consensus delineations of CTVs and OARs are available online and a table is presented with a contouring description of the individual volumes. The consensus provides recommendations for target delineation in a standard patient both in case of breast conservation or mastectomy. Before the consensus, the average value of the DSC was modest for most volumes, but high for the breast CTV and the heart. After the consensus, the DSC increased for all volumes. CONCLUSION The DBCG has provided the first national guidelines and a contouring atlas of CTVs and OARs definition for RT of early breast cancer. The DSC is a useful tool in quantifying the effect of the introduction of guidelines indicating improved inter-delineator agreement. This consensus will be used by the DBCG in our prospective trials.
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