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Lwanga EH, van Roshum I, Munhoz DR, Meng K, Rezaei M, Goossens D, Bijsterbosch J, Alexandre N, Oosterwijk J, Krol M, Peters P, Geissen V, Ritsema C. Microplastic appraisal of soil, water, ditch sediment and airborne dust: The case of agricultural systems. Environ Pollut 2023; 316:120513. [PMID: 36374801 DOI: 10.1016/j.envpol.2022.120513] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Revised: 10/19/2022] [Accepted: 10/21/2022] [Indexed: 06/16/2023]
Abstract
Although microplastic pollution jeopardizes both terrestrial and aquatic ecosystems, the movement of plastic particles through terrestrial environments is still poorly understood. Agricultural soils exposed to different managements are important sites of storage and dispersal of microplastics. This study aimed to identify the abundance, distribution, and type of microplastics present in agricultural soils, water, airborne dust, and ditch sediments. Soil health was also assessed using soil macroinvertebrate abundance and diversity. Sixteen fields were evaluated, 6 of which had been exposed to more than 5 years of compost application, 5 were exposed to at least 5 years of plastic mulch use, and 5 were not exposed to any specific management (controls) within the last 5 years. We also evaluated the spread of microplastics from the farms into nearby water bodies and airborne dust. We found 11 types of microplastics in soil, among which Light Density Polyethylene (LDPE) and Light Density Polyethylene covered with pro-oxidant additives (PAC) were the most abundant. The highest concentrations of plastics were found in soils exposed to plastic mulch management (128.7 ± 320 MPs.g-1 soil and 224.84 ± 488 MPs.g-1 soil, respectively) and the particles measured from 50 to 150 μm. Nine types of microplastics were found in water, with the highest concentrations observed in systems exposed to compost. Farms applying compost had higher LDPE and PAC concentrations in ditch sediments as compared to control and mulch systems; a significant correlation between soil polypropylene (PP) microplastics with ditch sediment microplastics (r2 0.7 p < 0.05) was found. LDPE, PAC, PE (Polyethylene), and PP were the most abundant microplastics in airborne dust. Soil invertebrates were scarce in the systems using plastic mulch. A cocktail of microplastics was found in all assessed matrices.
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Affiliation(s)
- Esperanza Huerta Lwanga
- Soil Physics and Land Management Group, Wageningen University & Research, P.O. Box 47, 6700 AA Wageningen, the Netherlands; Agroecología, El Colegio de La Frontera Sur, Unidad Campeche, Campeche, Mexico.
| | - Ilse van Roshum
- Soil Physics and Land Management Group, Wageningen University & Research, P.O. Box 47, 6700 AA Wageningen, the Netherlands
| | - Davi R Munhoz
- Soil Physics and Land Management Group, Wageningen University & Research, P.O. Box 47, 6700 AA Wageningen, the Netherlands
| | - Ke Meng
- Soil Physics and Land Management Group, Wageningen University & Research, P.O. Box 47, 6700 AA Wageningen, the Netherlands
| | - Mahrooz Rezaei
- Meteorology and Air Quality Group, Wageningen University & Research, P.O. Box 47, 6700 AA Wageningen, the Netherlands
| | - Dirk Goossens
- Soil Physics and Land Management Group, Wageningen University & Research, P.O. Box 47, 6700 AA Wageningen, the Netherlands; KU Leuven Department of Earth and Environmental Sciences, Geo-Institute, Celestijnenlaan 200 E, 3001, Leuven, Belgium
| | - Judith Bijsterbosch
- Soil Physics and Land Management Group, Wageningen University & Research, P.O. Box 47, 6700 AA Wageningen, the Netherlands
| | - Nuno Alexandre
- Soil Physics and Land Management Group, Wageningen University & Research, P.O. Box 47, 6700 AA Wageningen, the Netherlands
| | - Julia Oosterwijk
- Meteorology and Air Quality Group, Wageningen University & Research, P.O. Box 47, 6700 AA Wageningen, the Netherlands
| | - Maarten Krol
- Meteorology and Air Quality Group, Wageningen University & Research, P.O. Box 47, 6700 AA Wageningen, the Netherlands
| | - Piet Peters
- Soil Physics and Land Management Group, Wageningen University & Research, P.O. Box 47, 6700 AA Wageningen, the Netherlands
| | - Violette Geissen
- Soil Physics and Land Management Group, Wageningen University & Research, P.O. Box 47, 6700 AA Wageningen, the Netherlands
| | - Coen Ritsema
- Soil Physics and Land Management Group, Wageningen University & Research, P.O. Box 47, 6700 AA Wageningen, the Netherlands
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Silva V, Alaoui A, Schlünssen V, Vested A, Graumans M, van Dael M, Trevisan M, Suciu N, Mol H, Beekmann K, Figueiredo D, Harkes P, Hofman J, Kandeler E, Abrantes N, Campos I, Martínez MÁ, Pereira JL, Goossens D, Gandrass J, Debler F, Lwanga EH, Jonker M, van Langevelde F, Sorensen MT, Wells JM, Boekhorst J, Huss A, Mandrioli D, Sgargi D, Nathanail P, Nathanail J, Tamm L, Fantke P, Mark J, Grovermann C, Frelih-Larsen A, Herb I, Chivers CA, Mills J, Alcon F, Contreras J, Baldi I, Pasković I, Matjaz G, Norgaard T, Aparicio V, Ritsema CJ, Geissen V, Scheepers PTJ. Collection of human and environmental data on pesticide use in Europe and Argentina: Field study protocol for the SPRINT project. PLoS One 2021; 16:e0259748. [PMID: 34780516 PMCID: PMC8592492 DOI: 10.1371/journal.pone.0259748] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 10/25/2021] [Indexed: 11/18/2022] Open
Abstract
Current farm systems rely on the use of Plant Protection Products (PPP) to secure high productivity and control threats to the quality of the crops. However, PPP use may have considerable impacts on human health and the environment. A study protocol is presented aiming to determine the occurrence and levels of PPP residues in plants (crops), animals (livestock), humans and other non-target species (ecosystem representatives) for exposure modelling and impact assessment. To achieve this, we designed a cross-sectional study to compare conventional and organic farm systems across Europe. Environmental and biological samples were/are being/will be collected during the 2021 growing season, at 10 case study sites in Europe covering a range of climate zones and crops. An additional study site in Argentina will inform the impact of PPP use on growing soybean which is an important European protein-source in animal feed. We will study the impact of PPP mixtures using an integrated risk assessment methodology. The fate of PPP in environmental media (soil, water and air) and in the homes of farmers will be monitored. This will be complemented by biomonitoring to estimate PPP uptake by humans and farm animals (cow, goat, sheep and chicken), and by collection of samples from non-target species (earthworms, fish, aquatic and terrestrial macroinvertebrates, bats, and farm cats). We will use data on PPP residues in environmental and biological matrices to estimate exposures by modelling. These exposure estimates together with health and toxicity data will be used to predict the impact of PPP use on environment, plant, animal and human health. The outcome of this study will then be integrated with socio-economic information leading to an overall assessment used to identify transition pathways towards more sustainable plant protection and inform decision makers, practitioners and other stakeholders regarding farming practices and land use policy.
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Affiliation(s)
- Vera Silva
- Soil Physics and Land Management Group, Wageningen University & Research, Wageningen, Netherlands
| | - Abdallah Alaoui
- Institute of Geography, University of Bern, Bern, Switzerland
- Centre for Development and Environment, University of Bern, Bern, Switzerland
| | - Vivi Schlünssen
- Department of Public Health, Aarhus University, Aarhus, Denmark
- National Research Centre for the Working Environment, Copenhagen, Denmark
| | - Anne Vested
- Department of Public Health, Aarhus University, Aarhus, Denmark
| | - Martien Graumans
- Radboud Institute for Health Sciences, Radboudumc, Nijmegen, Netherlands
| | - Maurice van Dael
- Radboud Institute for Health Sciences, Radboudumc, Nijmegen, Netherlands
| | - Marco Trevisan
- Department for Sustainable Food Process (DISTAS), Università Cattolica del Sacro Cuore, Piacenza, Italy
| | - Nicoleta Suciu
- Department for Sustainable Food Process (DISTAS), Università Cattolica del Sacro Cuore, Piacenza, Italy
| | - Hans Mol
- Wageningen Food Safety Research, Wageningen, Wageningen University & Research, Wageningen, Netherlands
| | - Karsten Beekmann
- Wageningen Food Safety Research, Wageningen, Wageningen University & Research, Wageningen, Netherlands
| | - Daniel Figueiredo
- Institute for Risk Assessment Sciences, Utrecht University, Utrecht, Netherlands
| | - Paula Harkes
- Soil Physics and Land Management Group, Wageningen University & Research, Wageningen, Netherlands
| | - Jakub Hofman
- Research Centre for Toxic Compounds in the Environment (RECETOX), Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Ellen Kandeler
- Institute of Soil Science and Land Evaluation, Soil Biology Department, University of Hohenheim, Stuttgart, Germany
| | - Nelson Abrantes
- Centre for Environmental and Marine Studies and Department of Environment and Planning, University of Aveiro, Aveiro, Portugal
| | - Isabel Campos
- Centre for Environmental and Marine Studies and Department of Environment and Planning, University of Aveiro, Aveiro, Portugal
| | - María Ángeles Martínez
- Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas–CIEMAT, Madrid, Spain
| | - Joana Luísa Pereira
- Centre for Environmental and Marine Studies and Department of Biology, University of Aveiro, Aveiro, Portugal
| | - Dirk Goossens
- Soil Physics and Land Management Group, Wageningen University & Research, Wageningen, Netherlands
- KU Leuven Department of Earth and Environmental Sciences, Geo-institute, Celestijnenlaan, Leuven, Belgium
| | - Juergen Gandrass
- Institute of Coastal Environmental Chemistry, Organic Environmental Chemistry, Helmholtz-Zentrum Hereon, Geesthacht, Germany
| | - Freya Debler
- Institute of Coastal Environmental Chemistry, Organic Environmental Chemistry, Helmholtz-Zentrum Hereon, Geesthacht, Germany
| | - Esperanza Huerta Lwanga
- Soil Physics and Land Management Group, Wageningen University & Research, Wageningen, Netherlands
| | | | - Frank van Langevelde
- Wildlife Ecology and Conservation Group, Wageningen University & Research, Wageningen, Netherlands
| | | | - Jerry M. Wells
- Host-Microbe Interactomics, Animal Sciences Group, Wageningen University & Research, Wageningen, Netherlands
| | - Jos Boekhorst
- Host-Microbe Interactomics, Animal Sciences Group, Wageningen University & Research, Wageningen, Netherlands
| | - Anke Huss
- Institute for Risk Assessment Sciences, Utrecht University, Utrecht, Netherlands
| | - Daniele Mandrioli
- Cesare Maltoni Cancer Research Center, Ramazzini Institute, Bologna, Italy
| | - Daria Sgargi
- Cesare Maltoni Cancer Research Center, Ramazzini Institute, Bologna, Italy
| | | | | | - Lucius Tamm
- Research Institute of Organic Agriculture—FIBL, Frick, Switzerland
| | - Peter Fantke
- Quantitative Sustainability Assessment, Department of Technology, Management and Economics, Technical University of Denmark, Lyngby, Denmark
| | - Jennifer Mark
- Research Institute of Organic Agriculture—FIBL, Frick, Switzerland
| | | | | | | | - Charlotte-Anne Chivers
- Countryside and Community Research Institute, University of Gloucestershire, Cheltenham, United Kingdom
| | - Jane Mills
- Countryside and Community Research Institute, University of Gloucestershire, Cheltenham, United Kingdom
| | | | | | - Isabelle Baldi
- INSERM U1219, EPICENE Team, Bordeaux University, Nouvelle-Aquitaine, France
| | - Igor Pasković
- Institute of Agriculture and Tourism, Department of Agriculture and Nutrition, Poreč, Croatia
| | - Glavan Matjaz
- Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Trine Norgaard
- Department of Agroecology, Aarhus University, Aarhus, Denmark
| | - Virginia Aparicio
- Instituto Nacional de Tecnología Agropecuaria—INTA, Buenos Aires, Argentina
| | - Coen J. Ritsema
- Soil Physics and Land Management Group, Wageningen University & Research, Wageningen, Netherlands
| | - Violette Geissen
- Soil Physics and Land Management Group, Wageningen University & Research, Wageningen, Netherlands
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Berghman G, Goossens D. Can the contamination of urban street sediment be used as an indicator for traffic density? A case-study in the city of Leuven, Belgium. J Environ Manage 2021; 295:113134. [PMID: 34186316 DOI: 10.1016/j.jenvman.2021.113134] [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] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 06/04/2021] [Accepted: 06/18/2021] [Indexed: 06/13/2023]
Abstract
The concentration, in urban street sediment, of 13 chemical elements was measured in the city of Leuven, Belgium. A total of 77 locations were sampled in pedestrian zones, streets with limited traffic, streets with much traffic, and on the ring road that has very busy traffic. The data were compared to NO2 concentrations measured by the CurieuzeNeuzen-Vlaanderen project, a large-scale study with 20,000 sampling points all over Flanders (the northern part of Belgium). NO2 is a frequently used indicator for traffic pollution. In Leuven the highest enrichment (strongest pollution) was measured for Cu, Sb, Pb and Zn. These elements could be related to brake wear and tire wear, respectively. For Cu and Zn the concentrations in Leuven exceed those in most of the other cities investigated in the literature. Moderate enrichment was measured for Cd, Cr, Ni and S. The other elements (As, Co, Fe, Mn and V) showed concentrations close to the background value in unpolluted soil. The Integrated Pollution Index (IPI) for Leuven is 8.15, which, according to criteria proposed by the literature on street sediment, classifies Leuven, on average over its surface area, as a "very highly polluted" city. As expected, for Cu and Sb the highest contamination is found on the ring road and the busy traffic circulation loops. For Zn and Pb, on the other hand, the highest contamination occurs in the city center, in the pedestrian zone where no traffic is allowed except for buses and taxis. We hypothesize that this is a result of historic accumulation of these elements at the time traffic was still allowed in this zone. In Leuven the chemical composition of street sediment did not correlate to the NO2 concentrations. This study shows that measurements of current pollution by traffic are not sufficient to determine the health risk because much exposure to toxic substances may be caused by resuspension, by traffic or wind, of substances that have accumulated in the city over time, sometimes decades ago, when regulations were much less stringent then today.
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Affiliation(s)
- Gunnar Berghman
- Geography and Tourism Research Group, KU Leuven Department of Earth and Environmental Sciences, Geo-Institute, Celestijnenlaan 200E, 3001, Leuven, Belgium
| | - Dirk Goossens
- Geography and Tourism Research Group, KU Leuven Department of Earth and Environmental Sciences, Geo-Institute, Celestijnenlaan 200E, 3001, Leuven, Belgium; Soil Physics and Land Management Group, Wageningen University & Research, PO. Box 47, 6700 AA, Wageningen, the Netherlands.
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Abstract
There is a paucity of literature describing potential issues related to lateral hand dominance in general and cardiac surgery. Nonetheless, during surgical training left-handedness can produce difficulties in the operating room that are not always understood or accepted by supervising right-handed surgeons. These problems can be easily overcome by practice and anticipation. This report aims to address laterality related issues in cardiac surgery and provide insight into techniques that may aid the left handed surgeon in a right handed dominated surgical environment. An ergonomically different approach, more convenient for the left-handed trainee, may facilitate learning, enhance confidence and increase surgeon satisfaction both for the trainer and trainee.
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Affiliation(s)
- K. Cathenis
- Department of Cardiac Surgery, AZ Maria Middelares Hospital, Ghent, Belgium
| | - J. Fleerakkers
- Department of Cardiothoracic Surgery, St Antonius Hospital, Nieuwegein, The Netherlands
| | - W. Willaert
- Department of Vascular Surgery, AZ Maria Middelares Hospital, Ghent, Belgium
| | - P. Ballaux
- Department of Cardiac Surgery, AZ Maria Middelares Hospital, Ghent, Belgium
| | - D. Goossens
- Department of Cardiac Surgery, AZ Maria Middelares Hospital, Ghent, Belgium
| | - R. Hamerlijnck
- Department of Cardiac Surgery, AZ Maria Middelares Hospital, Ghent, Belgium
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De Laere B, Oeyen S, Mayrhofer M, Whitington T, van Dam PJ, Van Oyen P, Ghysel C, Ampe J, Ost P, Demey W, Hoekx L, Schrijvers D, Brouwers B, Lybaert W, Everaert EG, De Maeseneer D, Strijbos M, Bols A, Fransis K, Beije N, de Kruijff IE, van Dam V, Brouwer A, Goossens D, Heyrman L, Van den Eynden GG, Rutten A, Del Favero J, Rantalainen M, Rajan P, Sleijfer S, Ullén A, Yachnin J, Grönberg H, Van Laere SJ, Lindberg J, Dirix LY. TP53 Outperforms Other Androgen Receptor Biomarkers to Predict Abiraterone or Enzalutamide Outcome in Metastatic Castration-Resistant Prostate Cancer. Clin Cancer Res 2019; 25:1766-1773. [PMID: 30209161 PMCID: PMC6330086 DOI: 10.1158/1078-0432.ccr-18-1943] [Citation(s) in RCA: 107] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 08/14/2018] [Accepted: 09/11/2018] [Indexed: 12/11/2022]
Abstract
PURPOSE To infer the prognostic value of simultaneous androgen receptor (AR) and TP53 profiling in liquid biopsies from patients with metastatic castration-resistant prostate cancer (mCRPC) starting a new line of AR signaling inhibitors (ARSi).Experimental Design: Between March 2014 and April 2017, we recruited patients with mCRPC (n = 168) prior to ARSi in a cohort study encompassing 10 European centers. Blood samples were collected for comprehensive profiling of CellSearch-enriched circulating tumor cells (CTC) and circulating tumor DNA (ctDNA). Targeted CTC RNA sequencing (RNA-seq) allowed the detection of eight AR splice variants (ARV). Low-pass whole-genome and targeted gene-body sequencing of AR and TP53 was applied to identify amplifications, loss of heterozygosity, mutations, and structural rearrangements in ctDNA. Clinical or radiologic progression-free survival (PFS) was estimated by Kaplan-Meier analysis, and independent associations were determined using multivariable Cox regression models. RESULTS Overall, no single AR perturbation remained associated with adverse prognosis after multivariable analysis. Instead, tumor burden estimates (CTC counts, ctDNA fraction, and visceral metastases) were significantly associated with PFS. TP53 inactivation harbored independent prognostic value [HR 1.88; 95% confidence interval (CI), 1.18-3.00; P = 0.008], and outperformed ARV expression and detection of genomic AR alterations. Using Cox coefficient analysis of clinical parameters and TP53 status, we identified three prognostic groups with differing PFS estimates (median, 14.7 vs. 7.51 vs. 2.62 months; P < 0.0001), which was validated in an independent mCRPC cohort (n = 202) starting first-line ARSi (median, 14.3 vs. 6.39 vs. 2.23 months; P < 0.0001). CONCLUSIONS In an all-comer cohort, tumor burden estimates and TP53 outperform any AR perturbation to infer prognosis.See related commentary by Rebello et al., p. 1699.
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Affiliation(s)
- Bram De Laere
- Center for Oncological Research (CORE), University of Antwerp, Antwerp, Belgium.
| | - Steffi Oeyen
- Center for Oncological Research (CORE), University of Antwerp, Antwerp, Belgium
| | - Markus Mayrhofer
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Tom Whitington
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Pieter-Jan van Dam
- Center for Oncological Research (CORE), University of Antwerp, Antwerp, Belgium
- HistoGeneX NV, Wilrijk, Antwerp, Belgium
| | | | | | - Jozef Ampe
- Department of Urology, AZ Sint-Jan, Brugge, Belgium
| | - Piet Ost
- Department of Radiation Oncology, Ghent University Hospital, Ghent, Belgium
| | - Wim Demey
- Department of Oncology, AZ KLINA, Brasschaat, Belgium
| | - Lucien Hoekx
- Department of Urology, Antwerp University Hospital, Antwerp, Belgium
| | | | | | - Willem Lybaert
- Department of Oncology, AZ Nikolaas, Sint-Niklaas, Belgium
| | - Els G Everaert
- Department of Oncology, AZ Nikolaas, Sint-Niklaas, Belgium
| | | | | | - Alain Bols
- Department of Oncology, AZ Sint-Jan, Brugge, Belgium
| | - Karen Fransis
- Department of Urology, Antwerp University Hospital, Antwerp, Belgium
| | - Nick Beije
- Medical Oncology and Cancer Genomics Netherlands, Erasmus MC Cancer Institute, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Inge E de Kruijff
- Medical Oncology and Cancer Genomics Netherlands, Erasmus MC Cancer Institute, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Valerie van Dam
- Center for Oncological Research (CORE), University of Antwerp, Antwerp, Belgium
| | - Anja Brouwer
- Center for Oncological Research (CORE), University of Antwerp, Antwerp, Belgium
| | | | | | | | - Annemie Rutten
- Department of Oncology, GZA Hospitals Sint-Augustinus, Antwerp, Belgium
| | | | - Mattias Rantalainen
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Prabhakar Rajan
- Centre for Molecular Oncology, Barts Cancer Institute, Queen Mary University of London, London, United Kingdom
| | - Stefan Sleijfer
- Medical Oncology and Cancer Genomics Netherlands, Erasmus MC Cancer Institute, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Anders Ullén
- Department of Oncology-Pathology, Karolinska Institutet and University Hospital, Stockholm, Sweden
| | - Jeffrey Yachnin
- Department of Oncology-Pathology, Karolinska Institutet and University Hospital, Stockholm, Sweden
| | - Henrik Grönberg
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Steven J Van Laere
- Center for Oncological Research (CORE), University of Antwerp, Antwerp, Belgium
| | - Johan Lindberg
- Department of Medical Epidemiology and Biostatistics, Science for Life Laboratory, Karolinska Institutet, Stockholm, Sweden
| | - Luc Y Dirix
- Center for Oncological Research (CORE), University of Antwerp, Antwerp, Belgium
- Department of Oncology, GZA Hospitals Sint-Augustinus, Antwerp, Belgium
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Vangrinsven E, Girod M, Goossens D, Desquilbet L, Clercx C, Billen F. Comparison of two minimally invasive enilconazole perendoscopic infusion protocols for the treatment of canine sinonasal aspergillosis. J Small Anim Pract 2018; 59:777-782. [PMID: 30362215 DOI: 10.1111/jsap.12933] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 07/31/2018] [Accepted: 08/08/2018] [Indexed: 11/28/2022]
Abstract
OBJECTIVES To compare two minimally invasive enilconazole infusion protocols for the treatment of canine sinonasal aspergillosis and evaluate the importance of complete endoscopic debridement in determining first treatment success rate. MATERIALS AND METHODS Data for 48 dogs with confirmed sinonasal aspergillosis treated with endoscopic debridement followed by per-endoscopic enilconazole infusion were collected. Twenty-four dogs were treated according to the previously published 1-hour infusion protocol and 24 dogs underwent a simplified 15-minute infusion protocol. Completeness of debridement, evaluated as partial or complete at the end of the procedure and outcome after one or several treatments were assessed in all dogs. Multi-variable analysis was performed to derive odds ratios and 95% confidence intervals. RESULTS The median duration of the simplified protocol - 92∙3 minutes (range 40 to 140) - was substantially shorter than the duration of the previous protocol - 201∙3 minutes (range 120 to 265). First treatment success rates were 58 and 62∙5% for the previous and simplified protocol, respectively. Overall treatment success rate was similar in both groups (96%). Complete debridement was associated with an improved first treatment success rate compared to partial debridement. CLINICAL SIGNIFICANCE The simplified protocol is a valid alternative approach to the treatment of sinonasal aspergillosis. Completeness of endoscopic debridement before infusion is an important step for the success of treatment in canine sinonasal aspergillosis.
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Affiliation(s)
- E Vangrinsven
- Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Liège, 4000 Liège, Belgium
| | - M Girod
- Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Liège, 4000 Liège, Belgium
| | - D Goossens
- Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Liège, 4000 Liège, Belgium
| | - L Desquilbet
- Clinical Epidemiology and Biostatistics Unit, National Veterinary School of Alfort, University of Paris-Est, 94704 Paris, France
| | - C Clercx
- Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Liège, 4000 Liège, Belgium
| | - F Billen
- Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Liège, 4000 Liège, Belgium
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Fattal C, Albert T, Le-Chapelain L, Gault D, Goossens D, Perrouin-Verbe B. A recent survey relating to the organization of the French network of spinal cord injuries care units. Ann Phys Rehabil Med 2018. [DOI: 10.1016/j.rehab.2018.05.1183] [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: 10/28/2022]
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Keil DE, Buck B, Goossens D, McLaurin B, Murphy L, Leetham-Spencer M, Teng Y, Pollard J, Gerads R, DeWitt JC. Nevada desert dust with heavy metals suppresses IgM antibody production. Toxicol Rep 2018; 5:258-269. [PMID: 29854597 PMCID: PMC5978016 DOI: 10.1016/j.toxrep.2018.01.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 01/19/2018] [Accepted: 01/22/2018] [Indexed: 12/23/2022] Open
Abstract
NDRA emits geogenic dusts that are comprised of a mineral-metal mixture. Exposure to NDRA geogenic dusts suppressed immune function in a mouse model. Similar desert surfaces emit dust in southern Nevada and elsewhere in the world. This study represents a desert environment; dust composition may vary by source.
Systemic health effects from exposure to a complex natural dust containing heavy metals from the Nellis Dunes Recreation Area (NDRA) near Las Vegas, NV, were evaluated. Several toxicological parameters were examined following lung exposure to emissive dust from three geologic sediment types heavily used for recreational off-road activities: yellow sand very rich in arsenic (termed CBN 5); a shallow cover of loose dune sand overlying a gravelly subsoil bordering dune fields (termed CBN 6); and brown claystone and siltstone (termed CBN 7). Adult female B6C3F1 mice were exposed by oropharyngeal administration to these three types of geogenic dusts at 0.01–100 mg of dust/kg of body weight, once per week for four weeks. The median grain sizes were 4.6, 3.1, and 4.4 μm, for CBN 5, 6, and 7, respectively. Each type of dust contained quantifiable amounts of aluminum, vanadium, chromium, manganese, iron, cobalt, copper, zinc, arsenic, strontium, cesium, lead, uranium, and others. Descriptive markers of immunotoxicity, neurotoxicity, hematology, and clinical chemistry parameters were assessed. Notable among all three CBN units was a systemic, dose-responsive decrease in antigen-specific IgM antibody responses. Geogenic dust from CBN 5 produced more than a 70% suppression in IgM responses, establishing a lowest adverse effect level (LOAEL) of 0.01 mg/kg. A suppression in IgM responses and a corresponding increase in serum creatinine determined a LOAEL of 0.01 mg/kg for CBN 6. The LOAEL for CBN 7 was 0.1 mg/kg and also was identified from suppression in IgM responses. These results are of concern given the frequent off-road vehicle traffic and high visitor rates at the NDRA, estimated at 300,000 each year.
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Affiliation(s)
- Deborah E Keil
- Department of Microbiology and Immunology, Montana State University, PO Box 173520, Bozeman, MT, 59717, USA
| | - Brenda Buck
- Department of Geoscience, University of Nevada Las Vegas, 4505 S. Maryland Pkwy., Las Vegas, NV, 89154, USA
| | - Dirk Goossens
- Department of Earth and Environmental Sciences, KU Leuven, Celestijnenlaan 200E, 3001 Leuven, Belgium
| | - Brett McLaurin
- Department of Environmental, Geographical, and Geological Sciences, Bloomsburg University of Pennsylvania, Bloomsburg, PA, 17815, USA
| | - Lacey Murphy
- Department of Microbiology and Immunology, Montana State University, PO Box 173520, Bozeman, MT, 59717, USA
| | - Mallory Leetham-Spencer
- Department of Microbiology and Immunology, Montana State University, PO Box 173520, Bozeman, MT, 59717, USA
| | - Yuanxin Teng
- Department of Geoscience, University of Nevada Las Vegas, 4505 S. Maryland Pkwy., Las Vegas, NV, 89154, USA
| | - James Pollard
- Department of Geoscience, University of Nevada Las Vegas, 4505 S. Maryland Pkwy., Las Vegas, NV, 89154, USA
| | - Russell Gerads
- Brooks Applied Labs, 18804 North Creek Parkway, Bothell, WA, 98011, USA
| | - Jamie C DeWitt
- Department of Pharmacology and Toxicology, East Carolina University, 600 Moye Blvd., Greenville, NC, 27834, USA
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DeWitt JC, Buck BJ, Goossens D, Teng Y, Pollard J, McLaurin BT, Gerads R, Keil DE. Health effects following subacute exposure to geogenic dust collected from active drainage surfaces (Nellis Dunes Recreation Area, Las Vegas, NV). Toxicol Rep 2017; 4:19-31. [PMID: 28959621 PMCID: PMC5615102 DOI: 10.1016/j.toxrep.2016.12.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 12/06/2016] [Accepted: 12/07/2016] [Indexed: 11/29/2022] Open
Abstract
The specific health effects of direct inhalation of fine minerogenic dusts generated by natural soil surfaces remain poorly known and relatively little researched. To learn more about this exposure and its contribution to human health effects, we surveyed surface sediment and characterized dust from the Nellis Dunes Recreation Area (NDRA) in Clark County, Nevada, a popular off-road vehicle (ORV) recreational site. Dry drainage systems at NDRA are commonly used as natural trail systems for ORV recreation; these surfaces also are characterized by high concentrations of heavy metals. Geogenic dust with a median diameter of 4.05 μm, collected from drainage surfaces at NDRA contained a total elemental concentration of aluminum (79,651 μg/g), vanadium (100 μg/g), chromium (54 μg/g), manganese (753 μg/g), iron (33,266 μg/g), cobalt (14 μg/g), copper (37 μg/g) zinc (135 μg/g), arsenic (71 μg/g), strontium (666 μg/g), cesium (15 μg/g), lead (34 μg/g), and uranium (54.9 μg/g). Adult female B6C3F1 mice exposed via oropharyngeal aspiration to 0.01–100 mg dust/kg body weight, four times, a week apart, for 28-days, were evaluated for immuno- and neurotoxicological outcomes 24 h after the last exposure. Antigen-specific IgM responses were dose-responsively suppressed at 0.1, 1.0, 10 and 100 mg/kg. Splenic lymphocytic subpopulations, hematological and clinical chemistry parameters were affected. In brain tissue, antibodies against NF-68, and GFAP were not affected, whereas IgM antibodies against MBP were reduced by 26.6% only in the highest dose group. A lowest observed adverse effect level (LOAEL) of 0.1 mg/kg/day and a no observed adverse effect level (NOAEL) of 0.01 mg/kg/day were derived based on the antigen primary IgM responses after subacute exposure to this geogenic dust.
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Affiliation(s)
- Jamie C DeWitt
- Department of Pharmacology and Toxicology, East Carolina University, Greenville, NC 27834, USA
| | - Brenda J Buck
- Department of Geoscience, University of Nevada, Las Vegas, NV 89154, USA
| | - Dirk Goossens
- Department of Geoscience, University of Nevada, Las Vegas, NV 89154, USA.,Department of Earth and Environmental Sciences, KU, Leuven, Belgium
| | - Yuanxin Teng
- Department of Geoscience, University of Nevada, Las Vegas, NV 89154, USA
| | - James Pollard
- Department of Geoscience, University of Nevada, Las Vegas, NV 89154, USA
| | - Brett T McLaurin
- Department of Environmental, Geographical, and Geological Sciences, Bloomsburg University of Pennsylvania, Bloomsburg, PA 17815, USA
| | | | - Deborah E Keil
- Department of Microbiology and Immunology, Montana State University, Bozeman, MT 59717, USA
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Boulet G, Van Barel D, Rotthier A, Goossens D, Del-Favero J. Accurate and precise targeted NGS with BRCA MASTR Plus Dx for BRCA1 and BRCA2 mutation detection in formalin-fixed paraffin-embedded tumor tissue-derived DNA. J Clin Oncol 2017. [DOI: 10.1200/jco.2017.35.15_suppl.e23116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e23116 Background: Targeted next-generation sequencing (NGS) has tremendous potential in clinical diagnostics as it allows oncogenetic profiling to steer therapy. Inhibitors of poly-(ADP-ribose) polymerase (PARPi) have emerged as a new class of targeted anti-cancer drugs, specifically for tumors showing homologous recombination repair deficiency, including BRCA1- and BRCA2-mutated ovarian and breast cancers. This multicentre study evaluated the performance of BRCA Tumor MASTR Plus Dx* (Multiplicom) to routinely diagnose somatic and germline BRCA mutations in formalin-fixed paraffin-embedded (FFPE) tumor tissue-derived DNA. Methods: Three genetic centres participated in this performance evaluation study (PES) to detect single nucleotide variants (SNV) and small indels in the BRCA genes at a variant allele frequency down to 5%. The sample population comprised 54 FFPE-derived DNA extracts from 51 clinical and 3 reference samples. DNA extracts were subjected to quality control using Multiplicom’s QC plex assay. The clinical samples were characterized using an independent targeted NGS method and Integrative Genomics Viewer (IGV) analysis of the mapped raw reads. SNV calling was performed using third-party bioinformatics platforms in the BRCA coding regions +/- 2 intronic bp. Results: BRCA MASTR Plus Dx*showed a uniformity of 93.9%, i.e. the percentage of amplicons with at least 0.2x the mean amplicon coverage, and a target specificity of 99.1%. The limit of detection (LOD) proved to be as low as 1%. The diagnostic accuracy was ≥ 99.99% [95% CI ≥ 99.98%] (100% sensitivity [95% CI ≥ 99.02%] and ≥ 99.99% specificity [95% CI ≥ 99.98%]). Both repeatability and reproducibility were ≥ 99.99% [95% CI ≥ 99.98%]. Lot equivalence was 100% [95% CI ≥ 99.99%]. Conclusions: This multicentre study demonstrated that BRCA MASTR Plus Dx* can be routinely applied as an accurate and precise method with an LOD of 1%. The assay can be used to direct patients with somatic or germline BRCA mutations to PARPi therapy. Currently, a PES for BRCA MASTR Plus Dx* and Multiplicom’s MASTR Reporter software is ongoing. *Products described above are CE-IVD and not available for sale in the US
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Bento CPM, Goossens D, Rezaei M, Riksen M, Mol HGJ, Ritsema CJ, Geissen V. Glyphosate and AMPA distribution in wind-eroded sediment derived from loess soil. Environ Pollut 2017; 220:1079-1089. [PMID: 27876225 DOI: 10.1016/j.envpol.2016.11.033] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 11/09/2016] [Accepted: 11/11/2016] [Indexed: 05/12/2023]
Abstract
Glyphosate is one of the most used herbicides in agricultural lands worldwide. Wind-eroded sediment and dust, as an environmental transport pathway of glyphosate and of its main metabolite aminomethylphosphonic acid (AMPA), can result in environmental- and human exposure far beyond the agricultural areas where it has been applied. Therefore, special attention is required to the airborne transport of glyphosate and AMPA. In this study, we investigated the behavior of glyphosate and AMPA in wind-eroded sediment by measuring their content in different size fractions (median diameters between 715 and 8 μm) of a loess soil, during a period of 28 days after glyphosate application. Granulometrical extraction was done using a wind tunnel and a Soil Fine Particle Extractor. Extractions were conducted on days 0, 3, 7, 14, 21 and 28 after glyphosate application. Results indicated that glyphosate and AMPA contents were significantly higher in the finest particle fractions (median diameters between 8 and 18 μm), and lowered significantly with the increase in particle size. However, their content remained constant when aggregates were present in the sample. Glyphosate and AMPA contents correlated positively with clay, organic matter, and silt content. The dissipation of glyphosate over time was very low, which was most probably due to the low soil moisture content of the sediment. Consequently, the formation of AMPA was also very low. The low dissipation of glyphosate in our study indicates that the risk of glyphosate transport in dry sediment to off-target areas by wind can be very high. The highest glyphosate and AMPA contents were found in the smallest soil fractions (PM10 and less), which are easily inhaled and, therefore, contribute to human exposure.
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Affiliation(s)
- Célia P M Bento
- Soil Physics and Land Management, Wageningen University & Research, PO. Box 47, 6700 AA, Wageningen, The Netherlands.
| | - Dirk Goossens
- Department of Earth and Environmental Sciences, Katholieke Universiteit Leuven, Geo-Institute, Celestijnenlaan 200 E, 3001 Leuven, Belgium
| | - Mahrooz Rezaei
- Department of Soil Science, College of Agriculture, Shiraz University, Shiraz, Iran
| | - Michel Riksen
- Soil Physics and Land Management, Wageningen University & Research, PO. Box 47, 6700 AA, Wageningen, The Netherlands
| | - Hans G J Mol
- RIKILT - Wageningen University & Research, PO. Box 230, 6700 AE, Wageningen, The Netherlands
| | - Coen J Ritsema
- Soil Physics and Land Management, Wageningen University & Research, PO. Box 47, 6700 AA, Wageningen, The Netherlands
| | - Violette Geissen
- Soil Physics and Land Management, Wageningen University & Research, PO. Box 47, 6700 AA, Wageningen, The Netherlands
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Badoer C, Garrec C, Goossens D, Ellison G, Mills J, Dzial M, Housni HE, Berwouts S, Concolino P, Guevellou VGL, Delnatte C, Favero JD, Capoluongo E, Bézieau S. Performance of multiplicom's BRCA MASTR Dx kit on the detection of BRCA1 and BRCA2 mutations in fresh frozen ovarian and breast tumor samples. Oncotarget 2016; 7:81357-81366. [PMID: 27793035 PMCID: PMC5348397 DOI: 10.18632/oncotarget.12877] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2016] [Accepted: 09/08/2016] [Indexed: 12/25/2022] Open
Abstract
Next-generation sequencing (NGS) has enabled new approaches for detection of mutations in the BRCA1 and BRCA2 genes responsible for hereditary breast and ovarian cancer (HBOC). The search for germline mutations in the BRCA1 and BRCA2 genes is of importance with respect to oncogenetic and surgical (bilateral mastectomy, ovariectomy) counselling. Testing tumor material for BRCA mutations is of increasing importance for therapeutic decision making as the poly ADP ribose polymerase (PARP) inhibitor, olaparib, is now available to treat patients with specific forms of ovarian cancer and BRCA mutations. Molecular genetics laboratories should develop reliable and sensitive techniques for the complete analysis of the BRCA1 and BRCA2 genes. This is a challenge due to the size of the coding sequence of the BRCA1/2 genes, the absence of hot spot mutations, and particularly by the lower DNA quality obtained from Formalin-Fixed Paraffin-Embedded (FFPE) tissue. As a result, a number of analyses are uninterpretable and do not always provide a result to the clinician, limiting the optimal therapeutic management of patients. The availability of Fresh Frozen Tissue (FFT) for some laboratories and the excellent quality of the DNA extracted from it offers an alternative. For this reason, we evaluated Multiplicom's BRCA MASTR Dx assay on a set of 97 FFT derived DNA samples, in combination with the MID for Illumina MiSeq for BRCA1 and BRCA2 mutation detection. We obtained interpretable NGS results for all tested samples and showed > 99,7% sensitivity, specificity and accuracy.
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Affiliation(s)
- Cindy Badoer
- Laboratoire de Génétique Moléculaire, Clinique Universitaire de Bruxelles-Hôpital Erasme-Université Libre de Bruxelles (CUB-Erasme-ULB), Brussels, Belgium
| | - Céline Garrec
- Institut de Biologie, Laboratoire de Génétique Moléculaire, Service de Génétique Médicale, CHU Nantes, Nantes, France
| | | | - Gillian Ellison
- AstraZeneca, Personalised Healthcare and Biomarkers, Alderley Park, Macclesfield, UK
| | - John Mills
- AstraZeneca, Personalised Healthcare and Biomarkers, Alderley Park, Macclesfield, UK
| | - Mélina Dzial
- Laboratoire de Génétique Moléculaire, Clinique Universitaire de Bruxelles-Hôpital Erasme-Université Libre de Bruxelles (CUB-Erasme-ULB), Brussels, Belgium
| | - Hakim El Housni
- Laboratoire de Génétique Moléculaire, Clinique Universitaire de Bruxelles-Hôpital Erasme-Université Libre de Bruxelles (CUB-Erasme-ULB), Brussels, Belgium
| | | | - Paola Concolino
- Laboratory of Clinical Molecular and Personalized Diagnostics, Foundation Policlinico Gemelli and Catholic University of Rome, Italy
| | - Virginie Guibert-Le Guevellou
- Institut de Biologie, Laboratoire de Génétique Moléculaire, Service de Génétique Médicale, CHU Nantes, Nantes, France
| | - Capucine Delnatte
- Institut de Biologie, Laboratoire de Génétique Moléculaire, Service de Génétique Médicale, CHU Nantes, Nantes, France
| | | | - Ettore Capoluongo
- Laboratory of Clinical Molecular and Personalized Diagnostics, Foundation Policlinico Gemelli and Catholic University of Rome, Italy
- Molipharma and Giovanni Paolo II Foundation, Campobasso, Italy
| | - Stéphane Bézieau
- Institut de Biologie, Laboratoire de Génétique Moléculaire, Service de Génétique Médicale, CHU Nantes, Nantes, France
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Marques C, Bettens K, Goossens D, Heyrman L, Heusdens C, Kupers S, Berwouts S, Van Barel D, Rotthier A, Del-Favero J. Detection of NRAS, KRAS and BRAF mutations in FFPE derived DNA with a novel targeted resequencing-based diagnostics assay. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw380.16] [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: 11/12/2022] Open
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Keil DE, Buck B, Goossens D, Teng Y, Pollard J, McLaurin B, Gerads R, DeWitt J. Health effects from exposure to atmospheric mineral dust near Las Vegas, NV, USA. Toxicol Rep 2016; 3:785-795. [PMID: 28959605 PMCID: PMC5616076 DOI: 10.1016/j.toxrep.2016.09.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 09/13/2016] [Accepted: 09/22/2016] [Indexed: 11/25/2022] Open
Abstract
Atmospheric geogenic dust comprised of a mineral-metal mixture is a source of exposure in Clark County, Nevada. Lung exposures over a period of one month to NDRA atmospheric geogenic dust suppressed immune function in a mouse model. Similar geological desert surfaces emit dust in southern Nevada and elsewhere in the world. This study is representative of a desert environment; dust composition may vary by source.
Desert areas are usually characterized by a continuous deposition of fine airborne particles. Over time, this process results in the accumulation of silt and clay on desert surfaces. We evaluated health effects associated with regional atmospheric dust, or geogenic dust, deposited on surfaces in the Nellis Dunes Recreation Area (NDRA) in Clark County, Nevada, a popular off-road vehicle (ORV) recreational site frequented daily by riders, families, and day campers. Because of atmospheric mixing and the mostly regional origin of the accumulated particles, the re-suspended airborne dust is composed of a complex mixture of minerals and metals including aluminum, vanadium, chromium, manganese, iron, cobalt, copper, zinc, arsenic, strontium, cesium, lead, uranium, and others. Geogenic dust with a median diameter of 4.1 μm was administered via oropharyngeal aspiration to female B6C3F1 mice at doses of 0.01 to 100 mg dust/kg body weight, four times, a week apart, for 28-days. Immuno- and neurotoxicological outcomes 24 h following the last exposure were evaluated. Antigen-specific IgM responses were dose-responsively suppressed at 0.1, 1.0, 10 and 100 mg/kg/day. Splenic and thymic lymphocytic subpopulations and natural killer cell activity also were significantly reduced. Antibodies against MBP, NF-68, and GFAP were not affected, while brain CD3+ T cells were decreased in number. A lowest observed adverse effect level (LOAEL) of 0.1 mg/kg/day and a no observed adverse effect level (NOAEL) of 0.01 mg/kg/day were derived based on the antigen-specific IgM responses.
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Affiliation(s)
- Deborah E Keil
- Department of Microbiology and Immunology, Montana State University, PO Box 173520, Bozeman, MT, 59717, USA
| | - Brenda Buck
- Department of Geoscience, University of Nevada, 4505 S. Maryland Pkwy., Las Vegas, NV, 89154, USA
| | - Dirk Goossens
- Department of Geoscience, University of Nevada, 4505 S. Maryland Pkwy., Las Vegas, NV, 89154, USA.,Department of Earth and Environmental Sciences, KU Leuven, Celestijnenlaan 200E, 3001 Heverlee, Belgium
| | - Yuanxin Teng
- Department of Geoscience, University of Nevada, 4505 S. Maryland Pkwy., Las Vegas, NV, 89154, USA
| | - James Pollard
- Department of Geoscience, University of Nevada, 4505 S. Maryland Pkwy., Las Vegas, NV, 89154, USA
| | - Brett McLaurin
- Department of Environmental, Geographical, and Geological Sciences, Bloomsburg University of Pennsylvania, Bloomsburg, PA, 17815, USA
| | - Russell Gerads
- Brooks Applied Labs, 18804 North Creek Parkway, Bothell, WA, 98011, USA
| | - Jamie DeWitt
- Department of Pharmacology and Toxicology, East Carolina University, 600 Moye Blvd., Greenville, NC 27834, USA
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Crahay F, Goossens D, Gillet P, Rapaille A, Lambermont M. Restless legs syndrome in Belgian repeat blood donors, no correlation with ferritin level. Transfus Clin Biol 2016; 23:111-2. [DOI: 10.1016/j.tracli.2016.01.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Accepted: 01/05/2016] [Indexed: 11/25/2022]
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Leetham M, DeWitt J, Buck B, Goossens D, Teng Y, Pollard J, McLaurin B, Gerads R, Keil D. Oxidative stress and lung pathology following geogenic dust exposure. J Appl Toxicol 2016; 36:1276-83. [PMID: 26922875 DOI: 10.1002/jat.3297] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Revised: 12/26/2015] [Accepted: 01/05/2016] [Indexed: 01/14/2023]
Abstract
This study was designed to evaluate markers of systemic oxidative stress and lung histopathology following subacute exposure to geogenic dust with varying heavy metal content collected from a natural setting prone to wind erosion and used heavily for off-road vehicle recreation. Adult female B6C3F1 mice were exposed to several concentrations of dust collected from seven different types of surfaces at the Nellis Dunes Recreation Area in Clark County, Nevada, designated here as CBN 1-7. Dust representing each of the seven surface types, with an average median diameter of 4.2 μm, was selected and administered via oropharyngeal aspiration to mice at concentrations from 0.01 to 100 mg of dust kg(-1) of body weight. Exposures were given four times spaced a week apart over a 28 day period to mimic a month of weekend exposures. Lung pathology was evaluated while plasma markers of oxidative stress included levels of reactive oxygen and nitrogen species, superoxide dismutase, total antioxidant capacity and total glutathione. Overall, results of these assays to evaluate markers of oxidative stress indicate that no single CBN surface type was able to consistently induce markers of systemic oxidative stress at a particular dose or in a dose-response manner. All surface types were able to induce some level of lung inflammation, typically at the highest exposure levels. These data suggest that dust from the Nellis Dunes Recreation Area may present a potential health risk, but additional studies are necessary to characterize the full extent of health risks to humans. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- M Leetham
- Department of Microbiology and Immunology, Montana State University, Bozeman, Montana, 59717, USA
| | - J DeWitt
- Department of Pharmacology and Toxicology, East Carolina University, Greenville, North Carolina, 27834, USA
| | - B Buck
- Department of Geoscience, University of Nevada, Las Vegas, Nevada, 89154, USA
| | - D Goossens
- Department of Geoscience, University of Nevada, Las Vegas, Nevada, 89154, USA.,Department of Earth and Environmental Sciences, KU, Leuven, Belgium
| | - Y Teng
- Department of Geoscience, University of Nevada, Las Vegas, Nevada, 89154, USA
| | - J Pollard
- Department of Geoscience, University of Nevada, Las Vegas, Nevada, 89154, USA
| | - B McLaurin
- Department of Environmental, Geographical and Geological Sciences, Bloomsburg University of Pennsylvania, Bloomsburg, Pennsylvania, 17815, USA
| | - R Gerads
- Brooks Rand Labs, LLC, Bothell, Western Australia, 98011, USA
| | - D Keil
- Department of Microbiology and Immunology, Montana State University, Bozeman, Montana, 59717, USA
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Keil D, Buck B, Goossens D, Teng Y, Leetham M, Murphy L, Pollard J, Eggers M, McLaurin B, Gerads R, DeWitt J. Immunotoxicological and neurotoxicological profile of health effects following subacute exposure to geogenic dust from sand dunes at the Nellis Dunes Recreation Area, Las Vegas, NV. Toxicol Appl Pharmacol 2015; 291:1-12. [PMID: 26644169 DOI: 10.1016/j.taap.2015.11.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2015] [Revised: 11/10/2015] [Accepted: 11/27/2015] [Indexed: 11/27/2022]
Abstract
Exposure to geogenic particulate matter (PM) comprised of mineral particles has been linked to human health effects. However, very little data exist on health effects associated with geogenic dust exposure in natural settings. Therefore, we characterized particulate matter size, metal chemistry, and health effects of dust collected from the Nellis Dunes Recreation Area (NDRA), a popular off-road vehicle area located near Las Vegas, NV. Adult female B6C3F1 mice were exposed to several concentrations of mineral dust collected from active and vegetated sand dunes in NDRA. Dust samples (median diameter: 4.4 μm) were suspended in phosphate-buffered saline and delivered at concentrations ranging from 0.01 to 100 mg dust/kg body weight by oropharyngeal aspiration. ICP-MS analyses of total dissolution of the dust resulted in aluminum (55,090 μg/g), vanadium (70 μg/g), chromium (33 μg/g), manganese (511 μg/g), iron (21,600 μg/g), cobalt (9.4 μg/g), copper (69 μg/g), zinc (79 μg/g), arsenic (62 μg/g), strontium (620 μg/g), cesium (13 μg/g), lead 25 μg/g) and uranium (4.7 μg/g). Arsenic was present only as As(V). Mice received four exposures, once/week over 28-days to mimic a month of weekend exposures. Descriptive and functional assays to assess immunotoxicity and neurotoxicity were performed 24 h after the final exposure. The primary observation was that 0.1 to 100 mg/kg of this sand dune derived dust dose-responsively reduced antigen-specific IgM antibody responses, suggesting that dust from this area of NDRA may present a potential health risk.
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Affiliation(s)
- Deborah Keil
- Department of Microbiology and Immunology, Montana State University, Bozeman, MT 59717, USA.
| | - Brenda Buck
- Department of Geoscience, University of Nevada, Las Vegas, NV 89154, USA
| | - Dirk Goossens
- Department of Geoscience, University of Nevada, Las Vegas, NV 89154, USA; Geography Research Group, Department of Earth and Environmental Sciences, KU Leuven, Belgium
| | - Yuanxin Teng
- Department of Geoscience, University of Nevada, Las Vegas, NV 89154, USA
| | - Mallory Leetham
- Department of Microbiology and Immunology, Montana State University, Bozeman, MT 59717, USA
| | - Lacey Murphy
- Department of Microbiology and Immunology, Montana State University, Bozeman, MT 59717, USA
| | - James Pollard
- Department of Geoscience, University of Nevada, Las Vegas, NV 89154, USA
| | - Margaret Eggers
- Center for Biofilm Engineering, Montana State University, Bozeman, MT 59717, USA
| | - Brett McLaurin
- Department of Environmental, Geographical, and Geological Sciences, Bloomsburg University of Pennsylvania, Bloomsburg, PA 17815, USA
| | | | - Jamie DeWitt
- Department of Pharmacology and Toxicology, East Carolina University, Greenville, NC 27834, USA
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Dewulf M, Cathenis K, Goossens D. Conservative Treatment of Left Ventricular Free Wall Rupture. Acta Chir Belg 2015; 115:433-5. [PMID: 26763845 DOI: 10.1080/00015458.2015.11681148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
We present a case of post-infarction Left Ventricular Free Wall Rupture (LVFWR), in which conservative treatment was successfully applied. A 48-year old male patient presented at our emergency department with abdominal pain and a clinical presentation of shock. There had been an episode of chest pain three days before admission. Electrocardiogram was suggestive for old myocardial infarction. Coronarography revealed an occlusion of a diagonal branch. Computed Tomography scan was performed to exclude a rupturing aortic aneurysm, but a large pericardial effusion was seen. Echocardiography confirmed the diagnosis of cardiac tamponade and pericardiocentesis was performed. Conservative treatment consisting of bed rest, blood pressure control and beta-blocker therapy was applied, allowing the patient to be discharged after 10 days. The diagnosis of LVFWR was confirmed by cardiac magnetic resonance imaging.Surgery is considered as the golden standard in treatment of LVFWR. This case illustrates that in selected patients conservative treatment is possible.
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Johnstone M, Maclean A, Heyrman L, Lenaerts AS, Nordin A, Nilsson LG, De Rijk P, Goossens D, Adolfsson R, St Clair DM, Hall J, Lawrie SM, McIntosh AM, Del-Favero J, Blackwood DHR, Pickard BS. Copy Number Variations in DISC1 and DISC1-Interacting Partners in Major Mental Illness. Mol Neuropsychiatry 2015; 1:175-190. [PMID: 27239468 PMCID: PMC4872463 DOI: 10.1159/000438788] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Accepted: 07/13/2015] [Indexed: 01/15/2023]
Abstract
Robust statistical, genetic and functional evidence supports a role for DISC1 in the aetiology of major mental illness. Furthermore, many of its protein-binding partners show evidence for involvement in the pathophysiology of a range of neurodevelopmental and psychiatric disorders. Copy number variants (CNVs) are suspected to play an important causal role in these disorders. In this study, CNV analysis of DISC1 and its binding partners PAFAH1B1, NDE1, NDEL1, FEZ1, MAP1A, CIT and PDE4B in Scottish and Northern Swedish population-based samples was carried out using multiplex amplicon quantification. Here, we report the finding of rare CNVs in DISC1, NDE1 (together with adjacent genes within the 16p13.11 duplication), NDEL1 (including the overlapping MYH10 gene) and CIT. Our findings provide further evidence for involvement of DISC1 and its interaction partners in neuropsychiatric disorders and also for a role of structural variants in the aetiology of these devastating diseases.
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Affiliation(s)
- Mandy Johnstone
- Division of Psychiatry, University of Edinburgh, Royal Edinburgh Hospital, Edinburgh, UK; Medical Genetics, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK
| | - Alan Maclean
- Division of Psychiatry, University of Edinburgh, Royal Edinburgh Hospital, Edinburgh, UK; Medical Genetics, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK
| | - Lien Heyrman
- Applied Molecular Genomics Group, Department of Molecular Genetics, VIB, Antwerp, Belgium; University of Antwerp, Antwerp, Belgium
| | - An-Sofie Lenaerts
- Applied Molecular Genomics Group, Department of Molecular Genetics, VIB, Antwerp, Belgium; University of Antwerp, Antwerp, Belgium
| | - Annelie Nordin
- Department of Clinical Sciences, Psychiatry, Umeå University, Umeå, Sweden
| | | | - Peter De Rijk
- Applied Molecular Genomics Group, Department of Molecular Genetics, VIB, Antwerp, Belgium; University of Antwerp, Antwerp, Belgium
| | - Dirk Goossens
- Applied Molecular Genomics Group, Department of Molecular Genetics, VIB, Antwerp, Belgium; University of Antwerp, Antwerp, Belgium
| | - Rolf Adolfsson
- Department of Clinical Sciences, Psychiatry, Umeå University, Umeå, Sweden
| | - David M St Clair
- Institute of Medical Sciences, University of Aberdeen, Aberdeen, UK
| | - Jeremy Hall
- Neurosciences & Mental Health Research Institute, Cardiff University School of Medicine, Cardiff, UK
| | - Stephen M Lawrie
- Division of Psychiatry, University of Edinburgh, Royal Edinburgh Hospital, Edinburgh, UK
| | - Andrew M McIntosh
- Division of Psychiatry, University of Edinburgh, Royal Edinburgh Hospital, Edinburgh, UK
| | - Jurgen Del-Favero
- Applied Molecular Genomics Group, Department of Molecular Genetics, VIB, Antwerp, Belgium; University of Antwerp, Antwerp, Belgium
| | - Douglas H R Blackwood
- Division of Psychiatry, University of Edinburgh, Royal Edinburgh Hospital, Edinburgh, UK; Medical Genetics, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK
| | - Benjamin S Pickard
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, UK
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Goossens D, Buck BJ, Teng Y, McLaurin BT. Surface and Airborne Arsenic Concentrations in a Recreational Site near Las Vegas, Nevada, USA. PLoS One 2015; 10:e0124271. [PMID: 25897667 PMCID: PMC4405587 DOI: 10.1371/journal.pone.0124271] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Accepted: 03/11/2015] [Indexed: 12/02/2022] Open
Abstract
Elevated concentrations of arsenic, up to 7058 μg g(-1) in topsoil and bedrock, and more than 0.03 μg m(-3) in air on a 2-week basis, were measured in the Nellis Dunes Recreation Area (NDRA), a very popular off-road area near Las Vegas, Nevada, USA. The elevated arsenic concentrations in the topsoil and bedrock are correlated to outcrops of yellow sandstone belonging to the Muddy Creek Formation (≈ 10 to 4 Ma) and to faults crossing the area. Mineralized fluids moved to the surface through the faults and deposited the arsenic. A technique was developed to calculate airborne arsenic concentrations from the arsenic content in the topsoil. The technique was tested by comparing calculated with measured concentrations at 34 locations in the NDRA, for 3 periods of 2 weeks each. We then applied it to calculate airborne arsenic concentrations for more than 500 locations all over the NDRA. The highest airborne arsenic concentrations occur over sand dunes and other zones with a surficial layer of aeolian sand. Ironically these areas show the lowest levels of arsenic in the topsoil. However, they are highly susceptible to wind erosion and emit very large amounts of sand and dust during episodes of strong winds, thereby also emitting much arsenic. Elsewhere in the NDRA, in areas not or only very slightly affected by wind erosion, airborne arsenic levels equal the background level for airborne arsenic in the USA, approximately 0.0004 μg m(-3). The results of this study are important because the NDRA is visited by more than 300,000 people annually.
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Affiliation(s)
- Dirk Goossens
- Department of Geoscience, University of Nevada Las Vegas, Las Vegas, Nevada, United States of America
- Geography Research Group, Department of Earth and Environmental Sciences, KU Leuven, Leuven, Belgium
| | - Brenda J. Buck
- Department of Geoscience, University of Nevada Las Vegas, Las Vegas, Nevada, United States of America
| | - Yuanxin Teng
- Department of Geoscience, University of Nevada Las Vegas, Las Vegas, Nevada, United States of America
| | - Brett T. McLaurin
- Department of Environmental, Geographical and Geological Sciences, Bloomsburg University of Pennsylvania, Bloomsburg, Pennsylvania, United States of America
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Kubica M, Hildebrand F, Brinkman BM, Goossens D, Del Favero J, Vercammen K, Cornelis P, Schröder JM, Vandenabeele P, Raes J, Declercq W. The skin microbiome of caspase-14-deficient mice shows mild dysbiosis. Exp Dermatol 2014; 23:561-7. [DOI: 10.1111/exd.12458] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/22/2014] [Indexed: 12/23/2022]
Affiliation(s)
- Malgorzata Kubica
- Inflammation Research Center; VIB; Ghent Belgium
- Department of Biomedical Molecular Biology; Ghent University; Ghent Belgium
| | - Falk Hildebrand
- Department of Structural Biology; VIB; Brussels Belgium
- Laboratory for Molecular Bacteriology (Rega Institute); VIB-KULeuven; Leuven Belgium
| | - Brigitta M. Brinkman
- Inflammation Research Center; VIB; Ghent Belgium
- Department of Biomedical Molecular Biology; Ghent University; Ghent Belgium
| | - Dirk Goossens
- Applied Molecular Genomics; VIB Department of Molecular Genetics; Antwerp Belgium
- Department Biomedical Sciences; University of Antwerp; Antwerp Belgium
| | - Jurgen Del Favero
- Applied Molecular Genomics; VIB Department of Molecular Genetics; Antwerp Belgium
- Department Biomedical Sciences; University of Antwerp; Antwerp Belgium
| | - Ken Vercammen
- Department of Structural Biology; VIB; Brussels Belgium
- Laboratory for Molecular Bacteriology (Rega Institute); VIB-KULeuven; Leuven Belgium
| | - Pierre Cornelis
- Department of Structural Biology; VIB; Brussels Belgium
- Laboratory for Molecular Bacteriology (Rega Institute); VIB-KULeuven; Leuven Belgium
| | | | - Peter Vandenabeele
- Inflammation Research Center; VIB; Ghent Belgium
- Department of Biomedical Molecular Biology; Ghent University; Ghent Belgium
| | - Jeroen Raes
- Department of Structural Biology; VIB; Brussels Belgium
- Laboratory for Molecular Bacteriology (Rega Institute); VIB-KULeuven; Leuven Belgium
| | - Wim Declercq
- Inflammation Research Center; VIB; Ghent Belgium
- Department of Biomedical Molecular Biology; Ghent University; Ghent Belgium
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Poortinga A, van Minnen J, Keijsers J, Riksen M, Goossens D, Seeger M. Measuring fast-temporal sediment fluxes with an analogue acoustic sensor: a wind tunnel study. PLoS One 2013; 8:e74007. [PMID: 24058512 PMCID: PMC3776799 DOI: 10.1371/journal.pone.0074007] [Citation(s) in RCA: 18] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Accepted: 07/28/2013] [Indexed: 11/19/2022] Open
Abstract
In aeolian research, field measurements are important for studying complex wind-driven processes for land management evaluation and model validation. Consequently, there have been many devices developed, tested, and applied to investigate a range of aeolian-based phenomena. However, determining the most effective application and data analysis techniques is widely debated in the literature. Here we investigate the effectiveness of two different sediment traps (the BEST trap and the MWAC catcher) in measuring vertical sediment flux. The study was performed in a wind tunnel with sediment fluxes characterized using saltiphones. Contrary to most studies, we used the analogue output of five saltiphones mounted on top of each other to determine the total kinetic energy, which was then used to calculate aeolian sediment budgets. Absolute sediment losses during the experiments were determined using a balance located beneath the test tray. Test runs were conducted with different sand sizes and at different wind speeds. The efficiency of the two traps did not vary with the wind speed or sediment size but was affected by both the experimental setup (position of the lowest trap above the surface and number of traps in the saltation layer) and the technique used to calculate the sediment flux. Despite this, good agreement was found between sediment losses calculated from the saltiphone and those measured using the balance. The results of this study provide a framework for measuring sediment fluxes at small time resolution (seconds to milliseconds) in the field.
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Affiliation(s)
- Ate Poortinga
- Soil Physics and Land Management Group, Wageningen University, Wageningen, The Netherlands
- * E-mail:
| | - Jan van Minnen
- Soil Physics and Land Management Group, Wageningen University, Wageningen, The Netherlands
| | - Joep Keijsers
- Soil Physics and Land Management Group, Wageningen University, Wageningen, The Netherlands
| | - Michel Riksen
- Soil Physics and Land Management Group, Wageningen University, Wageningen, The Netherlands
| | - Dirk Goossens
- Geography Research Group, KU Leuven Department of Earth and Environmental Sciences, Geo-Institute, Leuven, Belgium
- Department of Geoscience, University of Nevada Las Vegas, Las Vegas, Nevada, United States of America
| | - Manuel Seeger
- Physical Geography, University of Trier, Trier, Germany
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Delleci C, Goossens D, Shao E, Nozères A, Forest K, Lassalle R, Denys P, Joseph PA, de Sèze M. Évolution naturelle clinique, urodynamique et de marqueurs inflammatoires et neurotrophiques urinaires chez 8 patients blessés médullaires suivis dès le traumatisme et jusqu’au 6e mois. Ann Phys Rehabil Med 2012. [DOI: 10.1016/j.rehab.2012.07.951] [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: 11/29/2022]
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Le Nué R, Harper L, De Sèze M, Bouteiller C, Goossens D, Dobremez E. Evolution of the management of acquired neurogenic bladder in children using intradetrusor botulinum toxin type A injections: 5-year experience and perspectives. J Pediatr Urol 2012; 8:497-503. [PMID: 22115699 DOI: 10.1016/j.jpurol.2011.09.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2011] [Accepted: 09/29/2011] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To report the clinical and urodynamic results of repeated intradetrusor botulinum toxin type A injections in children with an acquired neurogenic bladder. PATIENTS AND METHOD We reviewed the data of 8 patients presenting an acquired neurogenic bladder treated between 2005 and 2010. Their mean age was 12.4 years old (range: 5-18). They were all on clean intermittent catheterization. All patients presented detrusor overactivity resistant to oral anticholinergic treatment. They received between 2 and 6 injections at a dose of 12 botulinum toxin units (BU)/kg (maximum 300 BU). Cystometry was performed 4-8 weeks after treatment. RESULTS Five patients became completely dry, 2 were only rarely wet, and data are lacking for 1 patient. Febrile urinary tract infections ceased after 1 or 2 injections. The mean maximal detrusor pressure decreased below 40 cmH(2)O after 1, 2 and 3 injections. The normalized safe capacity rose significantly after 1, 2 and 3 injections. The normalized maximal bladder capacity rose similarly after 1, 2 and 3 injections although not always significantly. CONCLUSION Intradetrusor botulinum toxin-A injections significantly reduce detrusor pressure and can be repeated with efficacy. They have their place in between anticholinergic treatment and surgery. The procedure could be simplified and the dosage reduced.
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Affiliation(s)
- R Le Nué
- Service de Chirurgie Pédiatrique, Hôpital des Enfants, CHU de Bordeaux, Place Amélie Raba Léon, 33 076 Bordeaux, France.
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Van Den Bossche MJ, Johnstone M, Strazisar M, Pickard BS, Goossens D, Lenaerts AS, De Zutter S, Nordin A, Norrback KF, Mendlewicz J, Souery D, De Rijk P, Sabbe BG, Adolfsson R, Blackwood D, Del-Favero J. Rare copy number variants in neuropsychiatric disorders: Specific phenotype or not? Am J Med Genet B Neuropsychiatr Genet 2012; 159B:812-22. [PMID: 22911887 DOI: 10.1002/ajmg.b.32088] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2012] [Accepted: 07/11/2012] [Indexed: 12/31/2022]
Abstract
From a number of genome-wide association studies it was shown that de novo and/or rare copy number variants (CNVs) are found at an increased frequency in neuropsychiatric diseases. In this study we examined the prevalence of CNVs in six genomic regions (1q21.1, 2p16.3, 3q29, 15q11.2, 15q13.3, and 16p11.2) previously implicated in neuropsychiatric diseases. Hereto, a cohort of four neuropsychiatric disorders (schizophrenia, bipolar disorder, major depressive disorder, and intellectual disability) and control individuals from three different populations was used in combination with Multilpex Amplicon Quantifiaction (MAQ) assays, capable of high resolution (kb range) and custom-tailored CNV detection. Our results confirm the etiological candidacy of the six selected CNV regions for neuropsychiatric diseases. It is possible that CNVs in these regions can result in disturbed brain development and in this way lead to an increased susceptibility for different neuropsychiatric disorders, dependent on additional genetic and environmental factors. Our results also suggest that the neurodevelopmental component is larger in the etiology of schizophrenia and intellectual disability than in mood disorders. Finally, our data suggest that deletions are in general more pathogenic than duplications. Given the high frequency of the examined CNVs (1-2%) in patients of different neuropsychiatric disorders, screening of large cohorts with an affordable and feasible method like the MAQ assays used in this study is likely to result in important progress in unraveling the genetic factors leading to an increased susceptibility for several psychiatric disorders.
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Gelis A, Daures JP, Gault D, Bouchema T, Pedelucq JP, Maupas E, Goossens D, Pelissier J, Fattal C. Auto-évaluation des mesures de prévention cutanées chez les personnes lésées médullaires : validation de la version française du SMnac. Ann Phys Rehabil Med 2012. [DOI: 10.1016/j.rehab.2012.07.348] [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: 11/15/2022]
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Gelis A, Daures JP, Gault D, Bouchema T, Pedelucq JP, Maupas E, Goossens D, Pelissier J, Fattal C. Evaluating self-reported pressure ulcer prevention measures in person with spinal cord injury using the SMnac: Validation of the French version. Ann Phys Rehabil Med 2012. [DOI: 10.1016/j.rehab.2012.07.354] [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: 11/30/2022]
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Theuns J, Crosiers D, Debaene L, Nuytemans K, Meeus B, Sleegers K, Goossens D, Corsmit E, Elinck E, Peeters K, Mattheijssens M, Pickut B, Del-Favero J, Engelborghs S, De Deyn PP, Cras P, Van Broeckhoven C. Guanosine triphosphate cyclohydrolase 1 promoter deletion causes dopa-responsive dystonia. Mov Disord 2012; 27:1451-6. [PMID: 22976901 DOI: 10.1002/mds.25147] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2011] [Revised: 06/22/2012] [Accepted: 07/17/2012] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND Autosomal dominant dopa-responsive dystonia (AD-DRD) is caused by a biochemical defect primarily resulting from guanosine triphosphate cyclohydrolase 1 gene (GCH1) mutations. Few families have been reported without mutations in GCH1. METHODS Genome-wide linkage analysis and positional cloning to identify the genetic defect in a Belgian AD-DRD family was carried out. RESULTS AND CONCLUSION In this study, we report on the identification and characterization of a novel 24-kb deletion spanning exon 1 and the 5' regulatory region of GCH1 causing a wide spectrum of motor and nonmotor symptoms in a large Belgian AD-DRD family. This large-scale deletion of regulatory sequences leads to decreased GCH1 activity in all carriers, most probably resulting from allelic loss of transcription. We mapped the breakpoints of this deletion to the nucleotide level, allowing the development of a straightforward polymerase chain reaction assay for fast, efficient detection of this large deletion, which will prove valuable for preimplantation genetic diagnosis.
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Affiliation(s)
- Jessie Theuns
- Neurodegenerative Brain Diseases Group, VIB Department of Molecular Genetics, University of Antwerp, Antwerp, Belgium.
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Van Den Bossche MJ, Strazisar M, De Bruyne S, Bervoets C, Lenaerts AS, De Zutter S, Nordin A, Norrback KF, Goossens D, De Rijk P, Green EK, Grozeva D, Mendlewicz J, Craddock N, Sabbe BG, Adolfsson R, Souery D, Del-Favero J. Identification of a CACNA2D4 deletion in late onset bipolar disorder patients and implications for the involvement of voltage-dependent calcium channels in psychiatric disorders. Am J Med Genet B Neuropsychiatr Genet 2012; 159B:465-75. [PMID: 22488967 DOI: 10.1002/ajmg.b.32053] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2011] [Accepted: 03/21/2012] [Indexed: 11/05/2022]
Abstract
The GWAS-based association of CACNA1C with bipolar disorder (BPD) is one of the strongest genetic findings to date. CACNA1C belongs to the family of CACN genes encoding voltage-dependent calcium channels (VDCCs). VDCCs are involved in brain circuits and cognitive processes implicated in BPD and schizophrenia (SZ). Recently, it was shown that rare copy number variations (CNVs) are found at an increased frequency in SZ and to a lesser extent also in BPD, suggesting the involvement of CNVs in the causation of these diseases. We hypothesize that CNVs in CACN genes can influence the susceptibility to BPD, SZ, and/or schizoaffective disorder (SZA). A search for CNVs in eight CACN genes in a patient-control sample of European decent was performed. A total of 709 BP patients, 645 SZ patients, 189 SZA patients, and 1,470 control individuals were screened using the Multiplex Amplicon Quantification (MAQ) method. We found a rare, partial deletion of 35.7 kb in CACNA2D4 in two unrelated late onset bipolar I patients and in one control individual. All three deletions shared the same breakpoints removing exons 17-26 of CACNA2D4, comprising part of the CACHE domain. Based on the data we cannot claim causality to BPD of the identified CACNA2D4 deletion but nevertheless this deletion can be important in unraveling the underlying processes leading to psychiatric diseases in general and BPD in particular.
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Kruse LV, Nyegaard M, Christensen U, Møller-Larsen S, Haagerup A, Deleuran M, Hansen LG, Venø SK, Goossens D, Del-Favero J, Børglum AD. A genome-wide search for linkage to allergic rhinitis in Danish sib-pair families. Eur J Hum Genet 2012; 20:965-72. [PMID: 22419170 PMCID: PMC3421129 DOI: 10.1038/ejhg.2012.46] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Allergic rhinitis (AR) is a complex disorder with a polygenic, multifactorial aetiology. Twin studies have found the genetic contribution to be substantial. We collected and clinically characterised a sample consisting of 127 Danish nuclear families with at least two siblings suffering from AR or allergic conjunctivitis including 540 individuals (286 children and 254 parents). A whole-genome linkage scan, using 424 microsatellite markers, was performed on both this sample and an earlier collected sample consisting of 130 families with atopic dermatitis and other atopic disorders. A third sib-pair family sample, which was previously collected and genotyped, was added to the analysis increasing the total sample size to 357 families consisting of 1508 individuals. In total, 190 families with AR was included. The linkage analysis software Genehunter NPL, Genehunter MOD, and Genehunter Imprinting were used to obtain nonparametric and parametric linkage results. Family-based association analysis of positional candidate SNPs was carried out using the FBAT program. We obtained genome-wide significant linkage to a novel AR locus at 1p13 and suggestive linkage to two novel regions at 1q31-q32 and 20p12, respectively. Family-based association analysis of SNPs in the candidate locus DNND1B/CRB1 at 1q31 showed no significant association and could not explain the linkage signal observed. Suggestive evidence of linkage was also obtained at three AR loci previously reported (2q14-q23, 2q23, and 12p13) and indication of linkage was observed at a number of additional loci. Likely maternal imprinting was observed at 2q23, and possible maternal imprinting at 3q28.
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Beliën T, Bangels E, Peusens G, Goossens D, Berkvens N, Viaene N. TOWARDS IMPROVED CONTROL OF WOOLLY APPLE APHID (ERIOSOMA LANIGERUM) IN INTEGRATED FRUIT PRODUCTION. ACTA ACUST UNITED AC 2011. [DOI: 10.17660/actahortic.2011.917.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Hudspeth J, Goossens D, Gutmann M, Welberry R. Short range order in ferroelectric triglycine sulphate. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311089574] [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: 11/10/2022] Open
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Moens LN, De Rijk P, Reumers J, Van den Bossche MJA, Glassee W, De Zutter S, Lenaerts AS, Nordin A, Nilsson LG, Medina Castello I, Norrback KF, Goossens D, Van Steen K, Adolfsson R, Del-Favero J. Sequencing of DISC1 pathway genes reveals increased burden of rare missense variants in schizophrenia patients from a northern Swedish population. PLoS One 2011; 6:e23450. [PMID: 21853134 PMCID: PMC3154939 DOI: 10.1371/journal.pone.0023450] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2011] [Accepted: 07/18/2011] [Indexed: 01/24/2023] Open
Abstract
In recent years, DISC1 has emerged as one of the most credible and best supported candidate genes for schizophrenia and related neuropsychiatric disorders. Furthermore, increasing evidence--both genetic and functional--indicates that many of its protein interaction partners are also involved in the development of these diseases. In this study, we applied a pooled sample 454 sequencing strategy, to explore the contribution of genetic variation in DISC1 and 10 of its interaction partners (ATF5, Grb2, FEZ1, LIS-1, PDE4B, NDE1, NDEL1, TRAF3IP1, YWHAE, and ZNF365) to schizophrenia susceptibility in an isolated northern Swedish population. Mutation burden analysis of the identified variants in a population of 486 SZ patients and 514 control individuals, revealed that non-synonymous rare variants with a MAF<0.01 were significantly more present in patients compared to controls (8.64% versus 4.7%, P = 0.018), providing further evidence for the involvement of DISC1 and some of its interaction partners in psychiatric disorders. This increased burden of rare missense variants was even more striking in a subgroup of early onset patients (12.9% versus 4.7%, P = 0.0004), highlighting the importance of studying subgroups of patients and identifying endophenotypes. Upon investigation of the potential functional effects associated with the identified missense variants, we found that ∼90% of these variants reside in intrinsically disordered protein regions. The observed increase in mutation burden in patients provides further support for the role of the DISC1 pathway in schizophrenia. Furthermore, this study presents the first evidence supporting the involvement of mutations within intrinsically disordered protein regions in the pathogenesis of psychiatric disorders. As many important biological functions depend directly on the disordered state, alteration of this disorder in key pathways may represent an intriguing new disease mechanism for schizophrenia and related neuropsychiatric diseases. Further research into this unexplored domain will be required to elucidate the role of the identified variants in schizophrenia etiology.
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Affiliation(s)
- Lotte N Moens
- Applied Molecular Genomics Group, Department of Molecular Genetics, Flanders Institute for Biotechnology (VIB), Flanders, Belgium
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Lamothe G, Muller F, Vital JM, Goossens D, Barat M. Evolution of spinal cord injuries due to cervical canal stenosis without radiographic evidence of trauma (SCIWORET): A prospective study. Ann Phys Rehabil Med 2011; 54:213-24. [DOI: 10.1016/j.rehab.2011.02.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2010] [Revised: 02/11/2011] [Accepted: 02/12/2011] [Indexed: 11/28/2022]
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Gélis A, Stéfan A, Colin D, Albert T, Gault D, Goossens D, Perrouin-Verbe B, Fattal C, Pelissier J, Coudeyre E. Therapeutic education in persons with spinal cord injury: A review of the literature. Ann Phys Rehabil Med 2011; 54:189-210. [DOI: 10.1016/j.rehab.2011.03.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2010] [Revised: 03/13/2011] [Accepted: 03/17/2011] [Indexed: 11/24/2022]
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Chartier-Kastler E, Lauge I, Ruffion A, Goossens D, Charvier K, Biering-Sørensen F. Safety of a new compact catheter for men with neurogenic bladder dysfunction: a randomised, crossover and open-labelled study. Spinal Cord 2011; 49:844-50. [DOI: 10.1038/sc.2011.5] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Goossens D, Bangels E, Belien T, Schoevaerts C, De Maeyer L. Optimal profit of the parasitation by Aphelinus mali in an IPM complementary strategy for the control of Eriosoma lanigerum. Commun Agric Appl Biol Sci 2011; 76:457-465. [PMID: 22696953] [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: 06/01/2023]
Abstract
During summer the parasitoid Aphelinus mali may certainly reduce the infestation of woolly apple aphid (Eriosoma lanigerum), but studies on the single interaction rarely indicate sufficient biological control in the period May-June. In this period chemical control by spirotetramat or pirimicarb remains indispensable in order to anticipate on dense migration waves and subsequent colonization of extension shoots by E. lanigerum. The limited parasitation by A. mali around flowering is linked with a delayed emergence from diapause and with a slower reproduction rate than its host. In 2010 and 2011 the first adult flights monitored on yellow sticky traps corresponded perfectly with the currently used prediction models for A. mali. Further accurate monitoring all along the season enabled also to determine a well defined endo-parasitic phase of A. mali occurring after the small peak observed around flowering. During this endo-parasitic phase A. mali larvae reside inside their mummified host. Compounds with higher acute toxicity on A. mali adults, like chloronicotinyl insecticides (CNI's), are preferably positioned here. Selectivity in the time can then be claimed. Respecting this principle, the further parasitation potential of A. mali in summer is not hampered. Preservation of the first peak of flights of A. mali in the pre-flowering period is essential for an exponential flight increase. This is essential for the parasitation of E. lanigerum in summer, which constitutes a valuable complement in the integrated control strategy.
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Affiliation(s)
- D Goossens
- Pcfruit vzw, Zoology Department, Fruittuinweg 1, BE-3800 Sint-Truiden, Belgium
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Momozawa Y, Mni M, Nakamura K, Coppieters W, Almer S, Amininejad L, Cleynen I, Colombel JF, de Rijk P, Dewit O, Finkel Y, Gassull MA, Goossens D, Laukens D, Lémann M, Libioulle C, O'Morain C, Reenaers C, Rutgeerts P, Tysk C, Zelenika D, Lathrop M, Del-Favero J, Hugot JP, de Vos M, Franchimont D, Vermeire S, Louis E, Georges M. Resequencing of positional candidates identifies low frequency IL23R coding variants protecting against inflammatory bowel disease. Nat Genet 2010; 43:43-7. [PMID: 21151126 DOI: 10.1038/ng.733] [Citation(s) in RCA: 154] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2010] [Accepted: 11/18/2010] [Indexed: 02/07/2023]
Abstract
Genome-wide association studies (GWAS) have identified dozens of risk loci for many complex disorders, including Crohn's disease. However, common disease-associated SNPs explain at most ∼20% of the genetic variance for Crohn's disease. Several factors may account for this unexplained heritability, including rare risk variants not adequately tagged thus far in GWAS. That rare susceptibility variants indeed contribute to variation in multifactorial phenotypes has been demonstrated for colorectal cancer, plasma high-density lipoprotein cholesterol levels, blood pressure, type 1 diabetes, hypertriglyceridemia and, in the case of Crohn's disease, for NOD2 (refs. 14,15). Here we describe the use of high-throughput resequencing of DNA pools to search for rare coding variants influencing susceptibility to Crohn's disease in 63 GWAS-identified positional candidate genes. We identify low frequency coding variants conferring protection against inflammatory bowel disease in IL23R, but we conclude that rare coding variants in positional candidates do not make a large contribution to inherited predisposition to Crohn's disease.
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Affiliation(s)
- Yukihide Momozawa
- Unit of Animal Genomics, Groupe Interdisciplinaire de Génoprotéomique Appliquée (GIGA-R) and Faculty of Veterinary Medicine, University of Liège (B34), Liège, Belgium
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Deprez L, Weckhuysen S, Holmgren P, Suls A, Van Dyck T, Goossens D, Del-Favero J, Jansen A, Verhaert K, Lagae L, Jordanova A, Van Coster R, Yendle S, Berkovic SF, Scheffer I, Ceulemans B, De Jonghe P. Clinical spectrum of early-onset epileptic encephalopathies associated with STXBP1 mutations. Neurology 2010; 75:1159-65. [DOI: 10.1212/wnl.0b013e3181f4d7bf] [Citation(s) in RCA: 138] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Baets J, Deconinck T, Smets K, Goossens D, Van den Bergh P, Dahan K, Schmedding E, Santens P, Rasic VM, Van Damme P, Robberecht W, De Meirleir L, Michielsens B, Del-Favero J, Jordanova A, De Jonghe P. Mutations in SACS cause atypical and late-onset forms of ARSACS. Neurology 2010; 75:1181-8. [DOI: 10.1212/wnl.0b013e3181f4d86c] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Paściak M, Goossens D, Whitfield R, Withers R, Welberry TR. Local order and diffuse scattering in ferroelectric oxides. Acta Crystallogr A 2010. [DOI: 10.1107/s0108767310095152] [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: 11/10/2022] Open
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Kumps C, Van Roy N, Heyrman L, Goossens D, Del-Favero J, Noguera R, Vandesompele J, Speleman F, De Preter K. Multiplex Amplicon Quantification (MAQ), a fast and efficient method for the simultaneous detection of copy number alterations in neuroblastoma. BMC Genomics 2010; 11:298. [PMID: 20459859 PMCID: PMC2879279 DOI: 10.1186/1471-2164-11-298] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2009] [Accepted: 05/12/2010] [Indexed: 11/10/2022] Open
Abstract
Background Cancer genomes display characteristic patterns of chromosomal imbalances, often with diagnostic and prognostic relevance. Therefore assays for genome-wide copy number screening and simultaneous detection of copy number alterations in specific chromosomal regions are of increasing importance in the diagnostic work-up of tumors. Results We tested the performance of Multiplex Amplicon Quantification, a newly developed low-cost, closed-tube and high-throughput PCR-based technique for detection of copy number alterations in regions with prognostic relevance for neuroblastoma. Comparison with array CGH and the established Multiplex Ligation-dependent Probe Amplification method on 52 neuroblastoma tumors showed that Multiplex Amplicon Quantification can reliably detect the important genomic aberrations. Conclusion Multiplex Amplicon Quantification is a low-cost and high-throughput PCR-based technique that can reliably detect copy number alterations in regions with prognostic relevance for neuroblastoma.
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Affiliation(s)
- Candy Kumps
- Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
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Alaerts M, Ceulemans S, Forero D, Moens LN, De Zutter S, Heyrman L, Lenaerts AS, Norrback KF, De Rijk P, Nilsson LG, Goossens D, Adolfsson R, Del-Favero J. Support for NRG1 as a susceptibility factor for schizophrenia in a northern Swedish isolated population. ACTA ACUST UNITED AC 2009; 66:828-37. [PMID: 19652122 DOI: 10.1001/archgenpsychiatry.2009.82] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
CONTEXT Neuregulin 1 (NRG1), a growth factor involved in neurodevelopment, myelination, neurotransmitter receptor expression, and synaptic plasticity, first joined the list of candidate genes for schizophrenia when a 7-marker haplotype at the 5' end of the gene (Hap(ICE)) was shown to be associated with the disorder in the Icelandic population. Since then, more genetic and functional evidence has emerged, which supports a role for NRG1 in the development of schizophrenia. OBJECTIVE To determine the contribution of NRG1 to susceptibility for schizophrenia in a northern Swedish isolated population. DESIGN Detailed linkage disequilibrium (LD)-based patient-control association study. This is the first study to type and analyze the 7 Hap(ICE) markers and a set of 32 HapMap tagging single-nucleotide polymorphisms (SNPs) that represents variants with a minor allele frequency of at least 1% and fully characterizes the LD structure of the 5' part of NRG1. SETTING Outpatient and inpatient hospitals. PARTICIPANTS A total of 486 unrelated patients with schizophrenia and 514 unrelated control individuals recruited from a northern Swedish isolated population. MAIN OUTCOME MEASURES Association between markers and disease. RESULTS Analysis of the Hap(ICE) markers showed the association of a 7-marker and 2-microsatellite haplotype, different from the haplotypes associated in the Icelandic population and overrepresented in northern Swedish control individuals. Subsequently, a more detailed analysis that included all 37 genotyped SNPs was performed by investigating haplotypic association, dependent and independent of LD block structure. We found significant association with 5 SNPs located in the second intron of NRG1 (.007 </= P </= .04). Also, 2-, 3-, and 4-SNP windows that comprise these SNPs were associated (P < 3 x 10(-4)). One protective haplotype (0% vs 1.8%; P <5 x 10(-5)) and 1 disease risk-causing haplotype (40.4% vs 34.9%, P = .02) were defined. CONCLUSION The NRG1 gene contributes to the susceptibility for schizophrenia in the northern Swedish population.
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Affiliation(s)
- Maaike Alaerts
- Applied Molecular Genomics Group, Department of Molecular Genetics, Flanders Institute for Biotechnology, University of Antwerp, B-2610 Antwerp, Belgium
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Goossens D, Buck B. Dust dynamics in off-road vehicle trails: Measurements on 16 arid soil types, Nevada, USA. J Environ Manage 2009; 90:3458-3469. [PMID: 19540651 DOI: 10.1016/j.jenvman.2009.05.031] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2008] [Revised: 05/01/2009] [Accepted: 05/22/2009] [Indexed: 05/27/2023]
Abstract
Soil analyses and measurements with the Portable In Situ Wind Erosion Laboratory (PI-SWERL) were conducted on 16 soil types in an area heavily affected by off-road vehicle (ORV) driving. Measurements were performed in ORV trails as well as on undisturbed terrain to investigate how ORV driving affects the vulnerability of a soil to emit PM10 (particles<10microm), during the driving as well as during episodes of wind erosion. Particular attention is paid to how the creation of a new trail affects those properties of the topsoil that determine its capability to emit PM10. Also, recommendations are given for adequate management of ORV-designed areas. The type of surface (sand, silt, gravel, drainage) is a key factor with respect to dust emission in an ORV trail. Trails in sand, defined in this study as the grain size fraction 63-2000microm, show higher deflation thresholds (the critical wind condition at which wind erosion starts) than the surrounding undisturbed soil. Trails in silt (2-63microm) and in drainages, on the other hand, have lower deflation thresholds than undisturbed soil. The increase in PM10 emission resulting from the creation of a new ORV trail is much higher for surfaces with silt than for surfaces with sand. Also, the creation of a new trail in silt decreases the supply limitation in the top layer: the capacity of the reservoir of emission-available PM10 increases. For sand the situation is reversed: the supply limitation increases, and the capacity of the PM10 reservoir decreases. Finally, ORV trails are characterized by a progressive coarsening of the top layer with time, but the speed of coarsening is much lower in trails in silt than in trails in sand or in drainages. The results of this study suggest that, to minimize emissions of PM10, new ORV fields should preferably be designed on sandy terrain rather than in silt areas or in drainages.
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Affiliation(s)
- Dirk Goossens
- Department of Geoscience, University of Nevada Las Vegas, 4505 S Maryland Parkway, Las Vegas, NV 89154-4010, USA.
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Nuytemans K, Meeus B, Crosiers D, Brouwers N, Goossens D, Engelborghs S, Pals P, Pickut B, Van den Broeck M, Corsmit E, Cras P, De Deyn PP, Del-Favero J, Van Broeckhoven C, Theuns J. Relative contribution of simple mutations vs. copy number variations in five Parkinson disease genes in the Belgian population. Hum Mutat 2009; 30:1054-61. [DOI: 10.1002/humu.21007] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Alaerts M, Ceulemans S, Forero D, Moens LN, De Zutter S, Heyrman L, Lenaerts AS, Norrback KF, Goossens D, De Rijk P, Nilsson LG, Adolfsson R, Del-Favero J. Detailed analysis of the serotonin transporter gene (SLC6A4) shows no association with bipolar disorder in the Northern Swedish population. Am J Med Genet B Neuropsychiatr Genet 2009; 150B:585-92. [PMID: 18792946 DOI: 10.1002/ajmg.b.30853] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Through active reuptake of serotonin into presynaptic neurons, the serotonin transporter (5-HTT) plays an important role in regulating serotonin concentrations in the brain, and it is the site of binding for tricyclic antidepressants and selective serotonin reuptake inhibitors (SSRIs). Therefore it has been hypothesized that this transporter is involved in the etiology of bipolar (BP) disorder. Inconsistent association study results for the SLC6A4 gene encoding 5-HTT reported in literature emphasize the need for more systematic and detailed analyses of this candidate gene. We performed an extensive analysis of SLC6A4 on DNA of 254 BPI patients and 364 control individuals from a Northern Swedish isolated population. This analysis consisted of a HapMap LD-based association study including three widely investigated polymorphisms (5-HTTVNTR, 5-HTTLPR, and rs3813034), a copy-number variation (CNV) analysis and a mutation analysis of the complete coding sequence and the 3'-UTR of SLC6A4. No single marker showed statistically significant association with BPI, nor did any of the haplotypes. In the mutation analysis 13 novel variants were detected, including 2 amino acid substitutions M389V and I587L, but these are probably not implicated in risk for BP. No deletions or duplications were detected in the CNV analysis. We conclude that variation in the SLC6A4 gene or its regulatory regions does not contribute to the susceptibility for BP disorder in the Northern Swedish population.
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Affiliation(s)
- Maaike Alaerts
- Applied Molecular Genomics Group, Department of Molecular Genetics, VIB, Antwerp, Belgium
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Goossens D, Moens LN, Nelis E, Lenaerts AS, Glassee W, Kalbe A, Frey B, Kopal G, De Jonghe P, De Rijk P, Del-Favero J. Simultaneous mutation and copy number variation (CNV) detection by multiplex PCR-based GS-FLX sequencing. Hum Mutat 2009; 30:472-6. [PMID: 19058222 DOI: 10.1002/humu.20873] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.1] [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: 11/10/2022]
Abstract
We evaluated multiplex PCR amplification as a front-end for high-throughput sequencing, to widen the applicability of massive parallel sequencers for the detailed analysis of complex genomes. Using multiplex PCR reactions, we sequenced the complete coding regions of seven genes implicated in peripheral neuropathies in 40 individuals on a GS-FLX genome sequencer (Roche). The resulting dataset showed highly specific and uniform amplification. Comparison of the GS-FLX sequencing data with the dataset generated by Sanger sequencing confirmed the detection of all variants present and proved the sensitivity of the method for mutation detection. In addition, we showed that we could exploit the multiplexed PCR amplicons to determine individual copy number variation (CNV), increasing the spectrum of detected variations to both genetic and genomic variants. We conclude that our straightforward procedure substantially expands the applicability of the massive parallel sequencers for sequencing projects of a moderate number of amplicons (50-500) with typical applications in resequencing exons in positional or functional candidate regions and molecular genetic diagnostics.
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Affiliation(s)
- Dirk Goossens
- Applied Molecular Genomics Group, Department of Molecular Genetics, Flanders Interuniversity Institute for Biotechnology (VIB), Belgium
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Goossens D, Dousse M, Ventura M, Fattal C. Chronic neuropathic pain in spinal cord injury patients: What is the impact of social and environmental factors on care management? Ann Phys Rehabil Med 2009; 52:173-9. [DOI: 10.1016/j.rehab.2008.12.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2008] [Accepted: 12/17/2008] [Indexed: 10/21/2022]
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49
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Hilgert N, Alasti F, Dieltjens N, Pawlik B, Wollnik B, Uyguner O, Delmaghani S, Weil D, Petit C, Danis E, Yang T, Pandelia E, Petersen MB, Goossens D, Favero JD, Sanati MH, Smith RJH, Van Camp G. Mutation analysis of TMC1 identifies four new mutations and suggests an additional deafness gene at loci DFNA36 and DFNB7/11. Clin Genet 2008; 74:223-32. [PMID: 18616530 DOI: 10.1111/j.1399-0004.2008.01053.x] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Hearing loss is the most frequent sensorineural disorder affecting 1 in 1000 newborns. In more than half of these babies, the hearing loss is inherited. Hereditary hearing loss is a very heterogeneous trait with about 100 gene localizations and 44 gene identifications for non-syndromic hearing loss. Transmembrane channel-like gene 1 (TMC1) has been identified as the disease-causing gene for autosomal dominant and autosomal recessive non-syndromic hearing loss at the DFNA36 and DFNB7/11 loci, respectively. To date, 2 dominant and 18 recessive TMC1 mutations have been reported as the cause of hearing loss in 34 families. In this report, we describe linkage to DFNA36 and DFNB7/11 in 1 family with dominant and 10 families with recessive non-syndromic sensorineural hearing loss. In addition, mutation analysis of TMC1 was performed in 51 familial Turkish patients with autosomal recessive hearing loss. TMC1 mutations were identified in seven of the families segregating recessive hearing loss. The pathogenic variants we found included two known mutations, c.100C>T and c.1165C>T, and four new mutations, c.2350C>T, c.776+1G>A, c.767delT and c.1166G>A. The absence of TMC1 mutations in the remaining six linked families implies the presence of mutations outside the coding region of this gene or alternatively at least one additional deafness-causing gene in this region. The analysis of copy number variations in TMC1 as well as DNA sequencing of 15 additional candidate genes did not reveal any proven pathogenic changes, leaving both hypotheses open.
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Affiliation(s)
- N Hilgert
- Department of Medical Genetics, University of Antwerp, Antwerp, Belgium
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Suls A, Dedeken P, Goffin K, Van Esch H, Dupont P, Cassiman D, Kempfle J, Wuttke TV, Weber Y, Lerche H, Afawi Z, Vandenberghe W, Korczyn AD, Berkovic SF, Ekstein D, Kivity S, Ryvlin P, Claes LRF, Deprez L, Maljevic S, Vargas A, Van Dyck T, Goossens D, Del-Favero J, Van Laere K, De Jonghe P, Van Paesschen W. Paroxysmal exercise-induced dyskinesia and epilepsy is due to mutations in SLC2A1, encoding the glucose transporter GLUT1. Brain 2008; 131:1831-44. [PMID: 18577546 PMCID: PMC2442425 DOI: 10.1093/brain/awn113] [Citation(s) in RCA: 258] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Paroxysmal exercise-induced dyskinesia (PED) can occur in isolation or in association with epilepsy, but the genetic causes and pathophysiological mechanisms are still poorly understood. We performed a clinical evaluation and genetic analysis in a five-generation family with co-occurrence of PED and epilepsy (n = 39), suggesting that this combination represents a clinical entity. Based on a whole genome linkage analysis we screened SLC2A1, encoding the glucose transporter of the blood-brain-barrier, GLUT1 and identified heterozygous missense and frameshift mutations segregating in this and three other nuclear families with a similar phenotype. PED was characterized by choreoathetosis, dystonia or both, affecting mainly the legs. Predominant epileptic seizure types were primary generalized. A median CSF/blood glucose ratio of 0.52 (normal >0.60) in the patients and a reduced glucose uptake by mutated transporters compared with the wild-type as determined in Xenopus oocytes confirmed a pathogenic role of these mutations. Functional imaging studies implicated alterations in glucose metabolism in the corticostriate pathways in the pathophysiology of PED and in the frontal lobe cortex in the pathophysiology of epileptic seizures. Three patients were successfully treated with a ketogenic diet. In conclusion, co-occurring PED and epilepsy can be due to autosomal dominant heterozygous SLC2A1 mutations, expanding the phenotypic spectrum associated with GLUT1 deficiency and providing a potential new treatment option for this clinical syndrome.
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Affiliation(s)
- Arvid Suls
- Neurogenetics Group,VIB Department of Molecular Genetics, University of Antwerp, Antwerpen, Belgium
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