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Peters M, de Jong J, Scharmga A, van Tubergen A, Geusens P, Loeffen D, Weijers R, Boyd SK, Barnabe C, Stok KS, van Rietbergen B, van den Bergh J. An automated algorithm for the detection of cortical interruptions and its underlying loss of trabecular bone; a reproducibility study. BMC Med Imaging 2018; 18:13. [PMID: 29764383 PMCID: PMC5952860 DOI: 10.1186/s12880-018-0255-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Accepted: 04/30/2018] [Indexed: 01/19/2023] Open
Abstract
Background We developed a semi-automated algorithm that detects cortical interruptions in finger joints using high-resolution peripheral quantitative computed tomography (HR-pQCT), and extended it with trabecular void volume measurement. In this study we tested the reproducibility of the algorithm using scan/re-scan data. Methods Second and third metacarpophalangeal joints of 21 subjects (mean age 49 (SD 11) years, 17 early rheumatoid arthritis and 4 undifferentiated arthritis, all diagnosed < 1 year ago) were imaged twice by HR-pQCT on the same day with repositioning between scans. The images were analyzed twice by one operator (OP1) and once by an additional operator (OP2), who independently corrected the bone contours when necessary. The number, surface and volume of interruptions per joint were obtained. Intra- and inter-operator reliability and intra-operator reproducibility were determined by intra-class correlation coefficients (ICC). Intra-operator reproducibility errors were determined as the least significant change (LSCSD). Results Per joint, the mean number of interruptions was 3.1 (SD 3.6), mean interruption surface 4.2 (SD 7.2) mm2, and mean interruption volume 3.5 (SD 10.6) mm3 for OP1. Intra- and inter-operator reliability was excellent for the cortical interruption parameters (ICC ≥0.91), except good for the inter-operator reliability of the interruption surface (ICC = 0.70). The LSCSD per joint was 4.2 for the number of interruptions, 5.8 mm2 for interruption surface, and 3.2 mm3 for interruption volume. Conclusions The algorithm was highly reproducible in the detection of cortical interruptions and their volume. Based on the LSC findings, the potential value of this algorithm for monitoring structural damage in the joints in early arthritis patients needs to be tested in clinical studies. Electronic supplementary material The online version of this article (10.1186/s12880-018-0255-7) contains supplementary material, which is available to authorized users.
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Van Son M, Peters M, Noteboom J, Eppinga W, Davila Fajardo R, Moerland M, Van der Voort van Zyp J. OC-0288: Outcomes of MRI-guided focal salvage high-dose-rate brachytherapy for recurrent prostate cancer. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)30598-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Dickfos M, Tan SBM, Stevenson ARL, Harris CA, Esler R, Peters M, Taylor DG. Development of a pelvic exenteration service at a tertiary referral centre. ANZ J Surg 2018; 88. [PMID: 29510462 DOI: 10.1111/ans.14427] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2017] [Revised: 01/07/2018] [Accepted: 01/13/2018] [Indexed: 11/29/2022]
Abstract
BACKGROUND Over one-third of primary rectal cancers are locally advanced at diagnosis, and local recurrence of rectal cancer occurs at a rate of 3-10% following primary curative resection. Extended resectional surgery, including pelvic exenteration, is the only proven therapy with curative potential in the treatment of these cancers along with many other pelvic malignancies. A microscopically clear resection margin (R0 resection) is the predominant prognostic factor affecting overall and disease-free survival. The extent and complexity of surgery required to achieve an R0 resection is associated with significant risk of morbidity and mortality. The aim of this paper is to show that pelvic exenterations can be performed with acceptable oncological and safe perioperative results in an appropriately resourced specialist centre. METHODS Data was collected retrospectively for 61 consecutive patients treated between June 2012 and February 2017. This included patient demographics, tumour characteristics, operative, clinical and histological data, length of hospital stay, morbidity and mortality data. RESULTS A total of 61 patients underwent surgery. Median age was 57 years (range 27-78 years). Median length of stay was 41 days (range 6-288 days). Median operative time was 624 min (range 239-1035 min); 30-day mortality was 3.3% (n = 2). Resection rates were 91.5% - R0, 6.8% - R1 and 1.7% - R2 resections. Histologically, 86.9% - adenocarcinomas, 3.3% - squamous cell carcinomas and 9.8% - represented by leiomyosarcoma, melanoma, myxoid chondrosarcoma, non-neoplastic processes and undifferentiated carcinoma. CONCLUSION Our experience confirms that radical resectional pelvic surgery can be safely performed with acceptable results during the establishment phase of a dedicated tertiary service.
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Scharmga A, Geusens P, Peters M, van den Bergh JP, Loeffen D, Schoonbrood T, van Rietbergen B, Vosse D, Weijers R, van Tubergen A. Structural damage and inflammation on radiographs or magnetic resonance imaging are associated with cortical interruptions on high-resolution peripheral quantitative computed tomography: a study in finger joints of patients with rheumatoid arthritis and healthy subjects. Scand J Rheumatol 2018; 47:431-439. [DOI: 10.1080/03009742.2018.1424234] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Limperg PF, Joosten MMH, Fijnvandraat K, Peters M, Grootenhuis MA, Haverman L. Male gender, school attendance and sports participation are positively associated with health-related quality of life in children and adolescents with congenital bleeding disorders. Haemophilia 2018; 24:395-404. [DOI: 10.1111/hae.13420] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/19/2017] [Indexed: 12/19/2022]
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Pötz C, Peters M. Der klinische Fall: Disseminierte Angiostrongylus-vasorum-Infektion bei einem aus Portugal importierten Junghund. TIERAERZTLICHE PRAXIS AUSGABE KLEINTIERE HEIMTIERE 2018. [DOI: 10.1055/s-0037-1622546] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
ZusammenfassungGegenstand und Ziel: Darstellung des Krankheitsbildes, der Dia gnostik und Therapie der kaninen Angiostrongylose. Material und Methode: Fallbericht eines fünf Monate alten, aus Portugal importierten Hundes. Ergebnisse: Das Tier zeigte therapieresis tenten Husten bei gutem Allgemeinbefinden. Röntgenologisch ließ sich eine alveolär-interstitielle Zeichnung der Lunge mit nodulären Verschattungen nachweisen. Hinweise auf eine Kar diomegalie bestanden nicht. Die Diagnose einer Infektion mit Angiostrongylus vasorum erfolgte durch die zytologische Unter-suchung einer endoskopisch gewonnenen Trachealsekretprobe. Die Sektion des Hundes ergab eine seltene systemische Angiostrongylose. Schlussfolgerung und klinische Relevanz: Bei Hunden mit unklarer Hustensymptomatik sollte grundsätzlich eine Lungenwurminfektion in Betracht gezogen werden. Als diagnos tisches Verfahren bietet sich eine koprologische Untersuchung oder die zytologische Untersuchung einer endoskopisch gewonnenen Trachealsekretprobe an. Die Screeningtests auf Reise-krankheiten sollten auch eine Infektion mit Angiostrongylus vasoram berücksichtigen.
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Waldrop G, Zhong J, Peters M, Goud A, Chen YH, Davis SN, Mukherjee B, Rajagopalan S. Incretin-based therapy in type 2 diabetes: An evidence based systematic review and meta-analysis. J Diabetes Complications 2018; 32:113-122. [PMID: 29074120 DOI: 10.1016/j.jdiacomp.2016.08.018] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 07/14/2016] [Accepted: 08/22/2016] [Indexed: 12/28/2022]
Abstract
Incretin based therapies such as dipeptidyl peptidase-4 inhibitors (DPP-4i) and glucagon-like peptide-1 receptor agonists (GLP-1Ra) are increasingly used for the treatment of Type 2 diabetes mellitus. In clinical practice and in previously performed clinical trials, these agents are often used in combination with other oral anti-diabetic agents (OADs) and Insulin. Prior meta-analytic reviews however do not adequately address the impact of background therapy and active comparator arms. Accordingly, we aimed to further investigate the efficacy of incretin based therapies by updating existing reviews by including clinical trial evidence after 2008; estimating the pooled effect of incretin therapies on glycemic efficacy and weight-loss, stratified by comparator therapy (placebo, mono-therapy, etc.), estimating the impact of background OADs and within class (GLP-1Ra or DPP-4i) comparative efficacy, on glycemia control. 82 randomized controlled trials after 2008 with glycemic control and weight loss as primary end-points were included. Both DPP-4i and GLP-1Ra reduced HbA1c, but only GLP-1Ra caused weight loss when compared to either active comparator drugs or placebo. GLP-1Ra were more effective than DPP-4i in glycemia lowering. Long acting GLP-1Ra were more effective in HbA1c lowering than short-acting agents but with similar weight loss effect. The effect of DPP-4i incretin glycemic efficacy was not modified by background therapy used in the study.
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Manco-Johnson M, Grabowski EF, Hellgreen M, Kemahli AS, Massicotte MP, Muntean W, Peters M, Nowak-Göttl U. Laboratory Testing for Thrombophilia in Pediatric Patients. Thromb Haemost 2017. [DOI: 10.1055/s-0037-1613169] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Manco-Johnson M, Grabowski EF, Hellgreen M, Kemahli AS, Massicotte MP, Muntean W, Peters M, Schlegel N, Wang M, Nowak-Göttl U. Recommendations for tPA Thrombolysis in Children. Thromb Haemost 2017. [DOI: 10.1055/s-0037-1613170] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Heijboer H, Peters M. Treatment of a Patient with Bernard-Soulier Syndrome and Recurrent Nosebleeds with Recombinant Factor VIIa. Thromb Haemost 2017. [DOI: 10.1055/s-0037-1615209] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Stone E, Peters M. Young low and middle-income country (LMIC) smokers-implications for global tobacco control. Transl Lung Cancer Res 2017; 6:S44-S46. [PMID: 29299409 PMCID: PMC5750168 DOI: 10.21037/tlcr.2017.10.11] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Accepted: 10/20/2017] [Indexed: 11/06/2022]
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Van Meter T, Mirshahi N, Peters M, Roy D, Rao V, Diaz-Arrastia R, Peacock W, Korley F. 264 Machine Learning Models Identify Mild Traumatic Brain Injury Patients With Significant Depressive Symptoms Over Six Months of Recovery Using a Three Biomarker Blood Test. Ann Emerg Med 2017. [DOI: 10.1016/j.annemergmed.2017.07.242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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138
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Limperg PF, Haverman L, Maurice-Stam H, Coppens M, Valk C, Kruip MJHA, Eikenboom J, Peters M, Grootenhuis MA. Health-related quality of life, developmental milestones, and self-esteem in young adults with bleeding disorders. Qual Life Res 2017; 27:159-171. [PMID: 28900823 PMCID: PMC5770500 DOI: 10.1007/s11136-017-1696-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/24/2017] [Indexed: 11/26/2022]
Abstract
Background The treatment of bleeding disorders improved in the last decades. However, the effect of growing up with bleeding disorders on developmental, emotional, and social aspects is understudied. Therefore, this study assesses HRQOL, developmental milestones, and self-esteem in Dutch young adults (YA) with bleeding disorders compared to peers. Methods Ninety-five YA (18–30 years) with bleeding disorders (78 men; mean 24.7 years, SD 3.5) and 17 women (mean 25.1 years, SD 3.8) participated and completed the Pediatric Quality of Life Inventory Young Adult version, the Course of Life Questionnaire, and the Rosenberg Self-Esteem Scale. Differences between patients with bleeding disorders and their peers, and between hemophilia severity groups, were tested using Mann–Whitney U tests. Results YA men with bleeding disorders report a slightly lower HRQOL on the total scale, physical functioning, and school/work functioning in comparison to healthy peers (small effect sizes). YA men with severe hemophilia report more problems on the physical functioning scale than non-severe hemophilia. YA men with bleeding disorders achieved more psychosexual developmental milestones than peers, but show a delay in ‘paid jobs, during middle and/or high school.’ A somewhat lower self-esteem was found in YA men with bleeding disorders in comparison to peers (small effect size). For YA women with bleeding disorders, no differences were found on any of the outcomes in comparison to peers. Conclusion This study demonstrates some impairments in HRQOL and self-esteem in YA men with bleeding disorders. By monitoring HRQOL, problems can be identified early, especially with regard to their physical and professional/school functioning.
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Subbarao GV, Arango J, Masahiro K, Hooper AM, Yoshihashi T, Ando Y, Nakahara K, Deshpande S, Ortiz-Monasterio I, Ishitani M, Peters M, Chirinda N, Wollenberg L, Lata JC, Gerard B, Tobita S, Rao IM, Braun HJ, Kommerell V, Tohme J, Iwanaga M. Genetic mitigation strategies to tackle agricultural GHG emissions: The case for biological nitrification inhibition technology. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2017; 262:165-168. [PMID: 28716411 DOI: 10.1016/j.plantsci.2017.05.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 05/01/2017] [Indexed: 05/16/2023]
Abstract
Accelerated soil-nitrifier activity and rapid nitrification are the cause of declining nitrogen-use efficiency (NUE) and enhanced nitrous oxide (N2O) emissions from farming. Biological nitrification inhibition (BNI) is the ability of certain plant roots to suppress soil-nitrifier activity, through production and release of nitrification inhibitors. The power of phytochemicals with BNI-function needs to be harnessed to control soil-nitrifier activity and improve nitrogen-cycling in agricultural systems. Transformative biological technologies designed for genetic mitigation are needed, so that BNI-enabled crop-livestock and cropping systems can rein in soil-nitrifier activity, to help reduce greenhouse gas (GHG) emissions and globally make farming nitrogen efficient and less harmful to environment. This will reinforce the adaptation or mitigation impact of other climate-smart agriculture technologies.
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Byrne K, Peters M, McDevitt E, Sheremata S, Mednick S, Silver M. The effects of cholinergic enhancement and consolidation duration on perceptual learning of texture discrimination. J Vis 2017. [DOI: 10.1167/17.10.1070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Gibson PG, Reddel H, McDonald VM, Marks G, Jenkins C, Gillman A, Upham J, Sutherland M, Rimmer J, Thien F, Katsoulotos GP, Cook M, Yang I, Katelaris C, Bowler S, Langton D, Robinson P, Wright C, Yozghatlian V, Burgess S, Sivakumaran P, Jaffe A, Bowden J, Wark PAB, Yan KY, Kritikos V, Peters M, Hew M, Aminazad A, Bint M, Guo M. Effectiveness and response predictors of omalizumab in a severe allergic asthma population with a high prevalence of comorbidities: the Australian Xolair Registry. Intern Med J 2017; 46:1054-62. [PMID: 27350385 DOI: 10.1111/imj.13166] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 06/02/2016] [Accepted: 06/21/2016] [Indexed: 02/01/2023]
Abstract
BACKGROUND Severe asthma is a high impact disease. Omalizumab targets the allergic inflammatory pathway; however, effectiveness data in a population with significant comorbidities are limited. AIMS To describe severe allergic asthma, omalizumab treatment outcomes and predictors of response among the Australian Xolair Registry participants. METHODS A web-based post-marketing surveillance registry was established to characterise the use, effectiveness and adverse effects of omalizumab (Xolair) for severe allergic asthma. RESULTS Participants (n = 192) (mean age 51 years, 118 female) with severe allergic asthma from 21 clinics in Australia were assessed, and 180 received omalizumab therapy. They had poor asthma control (Asthma Control Questionnaire, ACQ-5, mean score 3.56) and significant quality of life impairment (Asthma-related Quality of Life Questionnaire score 3.57), and 52% were using daily oral corticosteroid (OCS). Overall, 95% had one or more comorbidities (rhinitis 48%, obesity 45%, cardiovascular disease 23%). The omalizumab responder rate, assessed by an improvement of at least 0.5 in ACQ-5, was high at 83%. OCS use was significantly reduced. The response in participants with comorbid obesity and cardiovascular disease was similar to those without these conditions. Baseline ACQ-5 ≥ 2.0 (P = 0.002) and older age (P = 0.05) predicted the magnitude of change in ACQ-5 in response to omalizumab. Drug-related adverse events included anaphylactoid reactions (n = 4), headache (n = 2) and chest pains (n = 1). CONCLUSION Australian patients with severe allergic asthma report a high disease burden and have extensive comorbidity. Symptomatic response to omalizumab was high despite significant comorbid disease. Omalizumab is an effective targeted therapy for severe allergic asthma with comorbidity in a real-life setting.
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Haertel F, Huster D, Peters M, Nuding S, Schroeder J, Werdan K, Schulze C, Ebelt H. P3485Prognostic value of a vascular occlusion test (VOT) using tissue oxygen saturation (StO2) in patients in the early phase of multi organ dysfunction syndrome (MODS). Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p3485] [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: 11/14/2022] Open
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Peters M, Scharmga A, van Tubergen A, Arts J, Loeffen D, Weijers R, van Rietbergen B, Geusens P, van den Bergh JP. The Reliability of a Semi-automated Algorithm for Detection of Cortical Interruptions in Finger Joints on High Resolution CT Compared to MicroCT. Calcif Tissue Int 2017; 101:132-140. [PMID: 28349184 PMCID: PMC5498594 DOI: 10.1007/s00223-017-0264-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 03/01/2017] [Indexed: 12/19/2022]
Abstract
We developed a semi-automated algorithm for the detection of cortical interruptions in finger joints using high-resolution peripheral quantitative computed tomography (HR-pQCT). Here, we tested its reliability compared to microCT (µCT) as gold standard. Nineteen joints of 10 female anatomic index fingers were imaged by HR-pQCT and µCT (82 and 18 µm isotropic voxel sizes, respectively). The algorithm was applied for detection of cortical interruptions of different minimum diameters (range >0.16 to >0.50 mm). Reliability was tested at the joint level with intra-class correlation coefficient (ICC) for the number of interruptions and interruption surface, and at the level of a single interruption for matching between HR-pQCT and µCT with a fixed interruption diameter (>0.10 mm) on µCT. The positive predictive value (PPV0.10mm) and sensitivity0.10mm were evaluated. The mean number of interruptions per joint depended on the diameter cut-off and ranged from 3.4 to 53.5 on HR-pQCT and from 1.8 to 45.1 on µCT for interruptions >0.50 to >0.16 mm, respectively. Reliability at the joint level was almost perfect (ICC ≥0.81) for both the number and surface of interruptions >0.16 and >0.33 mm. As expected, the PPV0.10mm increased with increasing interruption diameter from 84.9 to 100%, for interruptions >0.16 and >0.50 mm, respectively. However, the sensitivity0.10mm decreased with increasing interruption diameter from 62.4 to 4.7%. This semi-automated algorithm for HR-pQCT in finger joints performed best for the detection of cortical interruptions with a minimum diameter of >0.16 or >0.33 mm, showing almost perfect reliability at the joint level and interruptions matched with those on µCT.
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Peters M, Brown D, Whelan L, Davidson S, Uranis C, Reece K, Spira N. PERSON-CENTERED LANGUAGE FOR RESPONSIVE BEHAVIOURS. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.2522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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van Velzen AS, Eckhardt CL, Peters M, Leebeek FWG, Escuriola-Ettingshausen C, Hermans C, Keenan R, Astermark J, Male C, Peerlinck K, le Cessie S, van der Bom JG, Fijnvandraat K. Intensity of factor VIII treatment and the development of inhibitors in non-severe hemophilia A patients: results of the INSIGHT case-control study. J Thromb Haemost 2017; 15:1422-1429. [PMID: 28440011 DOI: 10.1111/jth.13711] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Indexed: 12/14/2022]
Abstract
Essentials Research suggests that intensive treatment episodes may increase the risk to develop inhibitors. We performed an international nested case-control study with 298 non-severe hemophilia A patients. Surgery and a high dose of factor VIII concentrate were associated with increased inhibitor risk. Physicians need to review arguments for factor VIII dose and elective surgery extra critically. SUMMARY Background Inhibitor development is a major complication of treatment with factor VIII concentrates in hemophilia. Findings from studies among severe hemophilia A patients suggest that intensive treatment episodes increase the risk of developing inhibitors. Objectives We set out to assess whether intensive treatment is also associated with an increased risk of inhibitor development among non-severe hemophilia A patients. Patients/Methods We performed a nested case-control study. A total of 75 inhibitor patients (cases) and 223 control patients were selected from 2709 non-severe hemophilia A patients (FVIII:C, 2-40%) of the INSIGHT cohort study. Cases and controls were matched for date of birth and cumulative number of exposure days (EDs) to FVIII concentrates. Conditional logistic regression was used to calculate both unadjusted and adjusted odds ratios (aOR); the latter were adjusted for a priori specified confounders. Results Peak treatment of 5 or 10 consecutive EDs did not increase inhibitor risk (aOR, 1.0; 95% confidence interval (CI), 0.4-2.5; and aOR, 1.8; CI, 0.6-5.5, respectively). Both surgical intervention (aOR, 4.2; CI, 1.7-10.3) and a high mean dose (> 45 IU kg-1 /ED) of FVIII concentrate (aOR, 7.5; CI, 1.6-35.6) were associated with an increased inhibitor risk. Conclusions Our findings suggest that high-dose FVIII treatment and surgery increase the risk of inhibitor development in non-severe hemophilia A. Together with the notion that non-severe hemophilia A patients are at a lifelong risk of inhibitor development, we suggest that in the future physicians will review the arguments for the FVIII dose and elective surgery extra critically.
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Borot de Battisti M, Denis de Senneville B, Hautvast G, Binnekamp D, Peters M, Van der Voort van Zyp J, Lagendijk J, Maenhout M, Moerland M. OC-0276: Toward adaptive MR-guided HDR prostate brachytherapy - Simulation study based on anatomy movements. Radiother Oncol 2017. [DOI: 10.1016/s0167-8140(17)30719-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Nguyen-Dang TT, Peters M, Viau-Trudel J, Couture-Bienvenue E, Puthumpally-Joseph R, Charron E, Atabek O. Laser-induced electron diffraction: alignment defects and symmetry breaking. Mol Phys 2017. [DOI: 10.1080/00268976.2017.1317858] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Limperg P, Terwee C, Young N, Price V, Gouw S, Peters M, Grootenhuis M, Blanchette V, Haverman L. Health-related quality of life questionnaires in individuals with haemophilia: a systematic review of their measurement properties. Haemophilia 2017; 23:497-510. [DOI: 10.1111/hae.13197] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/24/2017] [Indexed: 01/29/2023]
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Peters M, Scharmga A, de Jong J, van Tubergen A, Geusens P, Arts JJ, Loeffen D, Weijers R, van Rietbergen B, van den Bergh J. An automated algorithm for the detection of cortical interruptions on high resolution peripheral quantitative computed tomography images of finger joints. PLoS One 2017; 12:e0175829. [PMID: 28426705 PMCID: PMC5402632 DOI: 10.1371/journal.pone.0175829] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Accepted: 04/01/2017] [Indexed: 11/25/2022] Open
Abstract
Objectives To introduce a fully-automated algorithm for the detection of small cortical interruptions (≥0.246mm in diameter) on high resolution peripheral quantitative computed tomography (HR-pQCT) images, and to investigate the additional value of manual correction of the automatically obtained contours (semi-automated procedure). Methods Ten metacarpophalangeal joints from seven patients with rheumatoid arthritis (RA) and three healthy controls were imaged with HR-pQCT. The images were evaluated by an algorithm according to the fully- and semi-automated procedure for the number and surface of interruptions per joint. Reliability between the fully- and semi-automated procedure and between two independent operators was tested using intra-class correlation coefficient (ICC) and the proportion of matching interruptions. Validity of single interruptions detected was tested by comparing it to visual scoring, as gold standard. The positive predictive value (PPV) and sensitivity were calculated. Results The median number of interruptions per joint was 14 (range 2 to 59) and did not significantly differ between the fully- and semi-automated procedure (p = 0.37). The median interruption surface per joint was significantly higher with the fully- vs. semi-automated procedure (respectively, 8.6mm2 vs. 5.8mm2 and 6.1mm2, p = 0.01). Reliability was almost perfect between the fully- and semi-automated procedure for both the number and surface of interruptions (ICC≥0.95) and the proportion of matching interruptions was high (≥76%). Also the inter-operator reliability was almost perfect (ICC≥0.97, proportion of matching interruptions 92%). The PPV ranged from 27.6% to 29.9%, and sensitivity from 69.7% to 76.3%. Most interruptions detected with the algorithm, did show an interruption on a 2D grayscale image. However, this interruption did not meet the criteria of an interruption with visual scoring. Conclusion The algorithm for HR-pQCT images detects cortical interruptions, and its interruption surface. Reliability and validity was comparable for the fully- and semi-automated procedures. However, we advise the use of the semi-automated procedure to assure quality. The algorithm is a promising tool for a sensitive and objective assessment of cortical interruptions in finger joints assessed by HR-pQCT.
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Limperg P, Haverman L, Beijlevelt M, van der Pot M, Zaal G, de Boer W, Fijnvandraat K, Peters M, Grootenhuis MA. Psychosocial care for children with haemophilia and their parents in the Netherlands. Haemophilia 2017; 23:362-369. [DOI: 10.1111/hae.13186] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/08/2017] [Indexed: 11/30/2022]
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