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Wouters M, Bastiaanse H, Rombauts S, de Vries L, De Pooter T, Strazisar M, Neutelings G, Vanholme R, Boerjan W. Suppression of the Arabidopsis cinnamoyl-CoA reductase 1-6 intronic T-DNA mutation by epigenetic modification. Plant Physiol 2023; 192:3001-3016. [PMID: 37139862 PMCID: PMC7614886 DOI: 10.1093/plphys/kiad261] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 04/10/2023] [Accepted: 04/10/2023] [Indexed: 05/05/2023]
Abstract
Arabidopsis (Arabidopsis thaliana) transfer DNA (T-DNA) insertion collections are popular resources for fundamental plant research. Cinnamoyl-CoA reductase 1 (CCR1) catalyzes an essential step in the biosynthesis of the cell wall polymer lignin. Accordingly, the intronic T-DNA insertion mutant ccr1-6 has reduced lignin levels and shows a stunted growth phenotype. Here, we report restoration of the ccr1-6 mutant phenotype and CCR1 expression levels after a genetic cross with a UDP-glucosyltransferase 72e1 (ugt72e1),-e2,-e3 T-DNA mutant. We discovered that the phenotypic recovery was not dependent on the UGT72E family loss of function but due to an epigenetic phenomenon called trans T-DNA suppression. Via trans T-DNA suppression, the gene function of an intronic T-DNA mutant was restored after the introduction of an additional T-DNA sharing identical sequences, leading to heterochromatinization and splicing out of the T-DNA-containing intron. Consequently, the suppressed ccr1-6 allele was named epiccr1-6. Long-read sequencing revealed that epiccr1-6, not ccr1-6, carries dense cytosine methylation over the full length of the T-DNA. We showed that the SAIL T-DNA in the UGT72E3 locus could trigger the trans T-DNA suppression of the GABI-Kat T-DNA in the CCR1 locus. Furthermore, we scanned the literature for other potential cases of trans T-DNA suppression in Arabidopsis and found that 22% of the publications matching our query report on double or higher-order T-DNA mutants that meet the minimal requirements for trans T-DNA suppression. These combined observations indicate that intronic T-DNA mutants need to be used with caution since methylation of intronic T-DNA might derepress gene expression and can thereby confound results.
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Affiliation(s)
- Marlies Wouters
- VIB Center for Plants Systems Biology, VIB, Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
| | - Héloïse Bastiaanse
- VIB Center for Plants Systems Biology, VIB, Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
| | - Stéphane Rombauts
- VIB Center for Plants Systems Biology, VIB, Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
| | - Lisanne de Vries
- VIB Center for Plants Systems Biology, VIB, Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
| | - Tim De Pooter
- Neuromics Support Facility, VIB Center for Molecular Neurology, VIB, Antwerp, Belgium
- Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium
| | - Mojca Strazisar
- Neuromics Support Facility, VIB Center for Molecular Neurology, VIB, Antwerp, Belgium
- Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium
| | - Godfrey Neutelings
- Unité de Glycobiologie Structurale et Fonctionnelle (UGSF), UMR 8576, CNRS, Université de Lille, Lille, France
| | - Ruben Vanholme
- VIB Center for Plants Systems Biology, VIB, Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
| | - Wout Boerjan
- VIB Center for Plants Systems Biology, VIB, Ghent, Belgium
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
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2
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De Meester B, Van Acker R, Wouters M, Traversari S, Steenackers M, Neukermans J, Van Breusegem F, Déjardin A, Pilate G, Boerjan W. Field and saccharification performances of poplars severely downregulated in CAD1. New Phytol 2022; 236:2075-2090. [PMID: 35808905 DOI: 10.1111/nph.18366] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [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: 05/22/2022] [Accepted: 07/01/2022] [Indexed: 06/15/2023]
Abstract
Lignin is one of the main factors causing lignocellulosic biomass recalcitrance to enzymatic hydrolysis. Glasshouse-grown poplars severely downregulated for CINNAMYL ALCOHOL DEHYDROGENASE 1 (CAD1), the enzyme catalysing the last step in the monolignol-specific branch of lignin biosynthesis, have increased saccharification yields and normal growth. Here, we assess the performance of these hpCAD poplars in the field under short rotation coppice culture for two consecutive rotations of 1 yr and 3 yr. While 1-yr-old hpCAD wood had 10% less lignin, 3-yr-old hpCAD wood had wild-type lignin levels. Because of their altered cell wall composition, including elevated levels of cinnamaldehydes, both 1-yr-old and 3-yr-old hpCAD wood showed enhanced saccharification yields upon harsh alkaline pretreatments (up to +85% and +77%, respectively). In contrast with previous field trials with poplars less severely downregulated for CINNAMYL ALCOHOL DEHYDROGENASE (CAD), the hpCAD poplars displayed leaning phenotypes, early bud set, early flowering and yield penalties. Moreover, hpCAD wood had enlarged vessels, decreased wood density and reduced relative and free water contents. Our data show that the phenotypes of CAD-deficient poplars are strongly dependent on the environment and underpin the importance of field trials in translating basic research towards applications.
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Affiliation(s)
- Barbara De Meester
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, 9052, Ghent, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 71, 9052, Ghent, Belgium
| | - Rebecca Van Acker
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, 9052, Ghent, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 71, 9052, Ghent, Belgium
| | - Marlies Wouters
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, 9052, Ghent, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 71, 9052, Ghent, Belgium
| | - Silvia Traversari
- BioLabs, Institute of Life Sciences, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127, Pisa, Italy
- Research Institute on Terrestrial Ecosytems (IRET-CNR), Via Moruzzi 1, 56124, Pisa, Italy
| | - Marijke Steenackers
- Research Institute for Nature and Forest (INBO), Gaverstraat 4, 9500, Geraardsbergen, Belgium
| | - Jenny Neukermans
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, 9052, Ghent, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 71, 9052, Ghent, Belgium
| | - Frank Van Breusegem
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, 9052, Ghent, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 71, 9052, Ghent, Belgium
| | - Annabelle Déjardin
- INRAE, ONF, BioForA Orléans, 2163 Avenue de la pomme de pin, 45075, Ardon, France
| | - Gilles Pilate
- INRAE, ONF, BioForA Orléans, 2163 Avenue de la pomme de pin, 45075, Ardon, France
| | - Wout Boerjan
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, 9052, Ghent, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 71, 9052, Ghent, Belgium
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3
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Wouters M, Corneillie S, Dewitte A, Van Doorsselaere J, Van den Bulcke J, Van Acker J, Vanholme B, Boerjan W. Whole genome duplication of wild-type and CINNAMYL ALCOHOL DEHYDROGENASE1-downregulated hybrid poplar reduces biomass yield and causes a brittle apex phenotype in field-grown wild types. Front Plant Sci 2022; 13:995402. [PMID: 36160989 PMCID: PMC9504066 DOI: 10.3389/fpls.2022.995402] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 08/22/2022] [Indexed: 06/16/2023]
Abstract
The potential of whole genome duplication to increase plant biomass yield is well-known. In Arabidopsis tetraploids, an increase in biomass yield was accompanied by a reduction in lignin content and, as a result, a higher saccharification efficiency was achieved compared with diploid controls. Here, we evaluated whether the results obtained in Arabidopsis could be translated into poplar and whether the enhanced saccharification yield upon alkaline pretreatment of hairpin-downregulated CINNAMYL ALCOHOL DEHYDROGENASE1 (hpCAD) transgenic poplar could be further improved upon a whole genome duplication. Using a colchicine treatment, wild-type (WT) Populus tremula x P. alba cv. INRA 717-1B4, a commonly used model clone in tree biotechnology research, and hpCAD tetraploids were generated and grown in the greenhouse. In parallel, WT tetraploid poplars were grown in the field. In contrast to Arabidopsis, a whole genome duplication of poplar had a negative impact on the biomass yield of both greenhouse- and field-grown trees. Strikingly, field-grown WT tetraploids developed a brittle apex phenotype, i.e., their tip broke off just below the apex. In addition, the chromosome doubling altered the biomass composition of field-grown, but not of greenhouse-grown tetraploid poplars. More specifically, the lignin content of field-grown tetraploid poplars was increased at the expense of matrix polysaccharides. This increase in lignin deposition in biomass is likely the cause of the observed brittle apex phenotype, though no major differences in stem anatomy or in mechanical properties could be found between di- and tetraploid WT poplars grown in the field. Finally, without biomass pretreatment, the saccharification efficiency of greenhouse- and field-grown WT diploids was not different from that of tetraploids, whereas that of greenhouse-grown hpCAD tetraploids was higher than that of greenhouse-grown diploids. Upon alkaline pretreatment, the saccharification yield of diploids was similar to that of tetraploids for all genotypes and growth conditions tested. This study showed that a whole genome duplication in hybrid WT and hpCAD poplar did neither result in further improvements in biomass yield, nor in improved biomass composition and, hence, saccharification performance.
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Affiliation(s)
- Marlies Wouters
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- VIB Center for Plant Systems Biology, Ghent, Belgium
| | - Sander Corneillie
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- VIB Center for Plant Systems Biology, Ghent, Belgium
| | - Angelo Dewitte
- Expertisecentrum Agro- en Biotechnologie, VIVES, Roeselare, Belgium
| | | | - Jan Van den Bulcke
- Laboratory of Wood Technology, Department of Environment, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Joris Van Acker
- Laboratory of Wood Technology, Department of Environment, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Bartel Vanholme
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- VIB Center for Plant Systems Biology, Ghent, Belgium
| | - Wout Boerjan
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- VIB Center for Plant Systems Biology, Ghent, Belgium
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Reijers I, Menzies A, Versluis J, Dimitriadis P, Wouters M, Saw R, Klop M, Pennington T, Van Houdt W, Bosch L, Cornelissen S, Lopez-Yurda M, Grijpink-Ongering L, Rawson R, Spillane A, Scolyer R, van de Wiel B, van Akkooi A, Long G, Blank C. 797P Relapse-free survival (RFS) update and first translational analyses of DONIMI, a study testing personalized neoadjuvant domatinostat, nivolumab (NIVO) and ipilimumab (IPI) in stage III melanoma patients (pts) based on the interferon-gamma signature (IFN-γ sign) algorithm. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.923] [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: 11/01/2022] Open
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van Not O, Van Den Eertwegh F, Haanen J, van Rijn R, Aarts M, Van den Berkmortel F, Blank C, Boers-Sonderen M, de Groot J, Hospers G, Kapiteijn E, De Meza M, Piersma D, Stevense-den Boer M, Van der Veldt A, Vreugdenhil G, Wouters M, Blokx W, Suijkerbuijk K. 859P The influence of hematologic malignancies on response to immune checkpoint inhibition in patients with advanced melanoma. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.985] [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: 11/01/2022] Open
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Hoengenaert L, Wouters M, Kim H, De Meester B, Morreel K, Vandersyppe S, Pollier J, Desmet S, Goeminne G, Ralph J, Boerjan W, Vanholme R. Overexpression of the scopoletin biosynthetic pathway enhances lignocellulosic biomass processing. Sci Adv 2022; 8:eabo5738. [PMID: 35857515 PMCID: PMC9278857 DOI: 10.1126/sciadv.abo5738] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 06/03/2022] [Indexed: 06/15/2023]
Abstract
Lignin is the main factor limiting the enzymatic conversion of lignocellulosic biomass into fermentable sugars. To reduce the recalcitrance engendered by the lignin polymer, the coumarin scopoletin was incorporated into the lignin polymer through the simultaneous expression of FERULOYL-CoA 6'-HYDROXYLASE 1 (F6'H1) and COUMARIN SYNTHASE (COSY) in lignifying cells in Arabidopsis. The transgenic lines overproduced scopoletin and incorporated it into the lignin polymer, without adversely affecting plant growth. About 3.3% of the lignin units in the transgenic lines were derived from scopoletin, thereby exceeding the levels of the traditional p-hydroxyphenyl units. Saccharification efficiency of alkali-pretreated scopoletin-overproducing lines was 40% higher than for wild type.
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Affiliation(s)
- Lennart Hoengenaert
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- Center for Plant Systems Biology, VIB, Ghent, Belgium
| | - Marlies Wouters
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- Center for Plant Systems Biology, VIB, Ghent, Belgium
| | - Hoon Kim
- Department of Biochemistry and U.S. Department of Energy’s Great Lakes Bioenergy Research Center, University of Wisconsin, Madison, WI, USA
| | - Barbara De Meester
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- Center for Plant Systems Biology, VIB, Ghent, Belgium
| | - Kris Morreel
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- Center for Plant Systems Biology, VIB, Ghent, Belgium
| | - Steven Vandersyppe
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- Center for Plant Systems Biology, VIB, Ghent, Belgium
- VIB Metabolomics Core, Ghent, Belgium
| | - Jacob Pollier
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- Center for Plant Systems Biology, VIB, Ghent, Belgium
- VIB Metabolomics Core, Ghent, Belgium
| | - Sandrien Desmet
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- Center for Plant Systems Biology, VIB, Ghent, Belgium
- VIB Metabolomics Core, Ghent, Belgium
| | - Geert Goeminne
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- Center for Plant Systems Biology, VIB, Ghent, Belgium
- VIB Metabolomics Core, Ghent, Belgium
| | - John Ralph
- Department of Biochemistry and U.S. Department of Energy’s Great Lakes Bioenergy Research Center, University of Wisconsin, Madison, WI, USA
| | - Wout Boerjan
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- Center for Plant Systems Biology, VIB, Ghent, Belgium
| | - Ruben Vanholme
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- Center for Plant Systems Biology, VIB, Ghent, Belgium
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Liebregts JHF, Xi T, Verhamme L, Kramer B, Wouters M, Meijer GJ. [Reconstruction after facial trauma with dento-alveolar injury]. Ned Tijdschr Tandheelkd 2022; 129:169-173. [PMID: 35420274 DOI: 10.5177/ntvt.2022.04.21132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
While abroad, a healthy 36-year-old woman slammed head-on into a rock wall at high speed, resulting in significant facial trauma. The initial trauma care and first aid took place abroad. In the Netherlands, the woman was referred to the Department of Oral and Maxillofacial Surgery (OMFS) for reconstruction of her face and alveolar processes, gingiva and dentition. In view of the seriousness of the injuries, a 3D treatment plan was drawn up in a multidisciplinary collaboration with an OMF surgeon, an implantologist, dentist and dental technician. By making a digital setup of both the top and bottom front in advance, it was possible to work predictably. The first step consisted of bone augmentation by means of an iliac crest graft to reconstruct the major bone defects of the superior and inferior alveolar processes. Implants were then placed in the upper and lower jaws in the ideal position for the suprastructure by means of drill jigs. Within 10 months after the trauma, the implant bridges could be placed on individual zirconia frameworks to optimally restore oral function and aesthetics, completing the reconstruction.
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Musolino S, Kurkjian H, Van Regemortel M, Wouters M, Kokkelmans SJJMF, Colussi VE. Bose-Einstein Condensation of Efimovian Triples in the Unitary Bose Gas. Phys Rev Lett 2022; 128:020401. [PMID: 35089744 DOI: 10.1103/physrevlett.128.020401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 10/04/2021] [Accepted: 12/01/2021] [Indexed: 06/14/2023]
Abstract
In an atomic Bose-Einstein condensate quenched to the unitary regime, we predict the sequential formation of a significant fraction of condensed pairs and triples. At short distances, we demonstrate the two-body and Efimovian character of the condensed pairs and triples, respectively. As the system evolves, their size becomes comparable to the interparticle distance, such that many-body effects become significant. The structure of the condensed triples depends on the size of Efimov states compared with density scales. Unexpectedly, we find universal condensed triples in the limit where these scales are well separated. Our findings provide a new framework for understanding dynamics in the unitary regime as the Bose-Einstein condensation of few-body composites.
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Affiliation(s)
- S Musolino
- Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, Netherlands
| | - H Kurkjian
- Laboratoire de Physique Théorique, Université de Toulouse, CNRS, UPS, 31400 Toulouse, France
| | - M Van Regemortel
- Joint Quantum Institute and The Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, Maryland 20742, USA
| | - M Wouters
- TQC, Universiteit Antwerpen, Universiteitsplein 1, B-2610 Antwerp, Belgium
| | - S J J M F Kokkelmans
- Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, Netherlands
| | - V E Colussi
- INO-CNR BEC Center and Dipartimento di Fisica, Università di Trento, 38123 Povo, Italy
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Vos J, Traets J, Qiao X, Seignette I, Wouters M, Hooijberg E, Broeks A, Van Der Wal J, Klop M, Schreuder P, Karakullukcu B, van Poelgeest M, Kapiteijn E, Blank C, Haanen J, Zuur C. 23P A comprehensive analysis of the mucosal melanoma immune microenvironment. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.10.039] [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: 10/19/2022] Open
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10
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De Meester B, Vanholme R, de Vries L, Wouters M, Van Doorsselaere J, Boerjan W. Vessel- and ray-specific monolignol biosynthesis as an approach to engineer fiber-hypolignification and enhanced saccharification in poplar. Plant J 2021; 108:752-765. [PMID: 34403547 DOI: 10.1111/tpj.15468] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [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: 06/24/2021] [Revised: 08/06/2021] [Accepted: 08/12/2021] [Indexed: 06/13/2023]
Abstract
Lignin is one of the main factors determining recalcitrance to processing of lignocellulosic biomass towards bio-based materials and fuels. Consequently, wood of plants engineered for low lignin content is typically more amenable to processing. However, lignin-modified plants often exhibit collapsed vessels and associated growth defects. Vessel-specific reintroduction of lignin biosynthesis in dwarfed low-lignin cinnamoyl-CoA reductase1 (ccr1) Arabidopsis mutants using the ProSNBE:AtCCR1 construct overcame the yield penalty while maintaining high saccharification yields, and showed that monolignols can be transported between the different xylem cells acting as 'good neighbors' in Arabidopsis. Here, we translated this research into the bio-energy crop poplar. By expressing ProSNBE:AtCCR1 into CRISPR/Cas9-generated ccr2 poplars, we aimed for vessel-specific lignin biosynthesis to: (i) achieve growth restoration while maintaining high saccharification yields; and (ii) study the existence of 'good neighbors' in poplar wood. Analyzing the resulting ccr2 ProSNBE:AtCCR1 poplars showed that vessels and rays act as good neighbors for lignification in poplar. If sufficient monolignols are produced by these cells, monolignols migrate over multiple cell layers, resulting in a restoration of the lignin amount to wild-type levels. If the supply of monolignols is limited, the monolignols are incorporated into the cell walls of the vessels and rays producing them and their adjoining cells resulting in fiber hypolignification. One such fiber-hypolignified line had 18% less lignin and, despite its small yield penalty, had an increase of up to 71% in sugar release on a plant base upon saccharification.
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Affiliation(s)
- Barbara De Meester
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, Ghent, 9052, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 71, Ghent, 9052, Belgium
| | - Ruben Vanholme
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, Ghent, 9052, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 71, Ghent, 9052, Belgium
| | - Lisanne de Vries
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, Ghent, 9052, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 71, Ghent, 9052, Belgium
| | - Marlies Wouters
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, Ghent, 9052, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 71, Ghent, 9052, Belgium
| | - Jan Van Doorsselaere
- Higher Institute for Nursing and Biotechnology, VIVES University College, Wilgenstraat 32, Roeselare, 8800, Belgium
| | - Wout Boerjan
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Technologiepark 71, Ghent, 9052, Belgium
- VIB Center for Plant Systems Biology, Technologiepark 71, Ghent, 9052, Belgium
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11
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Baas D, Vreuls W, Gorden V, Van Uijthoven B, Wouters M, Sedelaar J, Vrijhof H, Hoekstra R, Van Zanten M, Mange F, Van Basten J, Somford D. Evaluating confocal laser microscopy to assess intraoperative surgical margin status of prostatectomy specimen, a feasibility study (ENCLOSURE-1). EUR UROL SUPPL 2021. [DOI: 10.1016/s2666-1683(21)03120-7] [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: 11/16/2022] Open
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12
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Wouters M, Aouane O, Sega M, Harting J. Lattice Boltzmann simulations of drying suspensions of soft particles. Philos Trans A Math Phys Eng Sci 2021; 379:20200399. [PMID: 34455838 DOI: 10.1098/rsta.2020.0399] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 06/08/2021] [Indexed: 06/13/2023]
Abstract
The ordering of particles in the drying process of a colloidal suspension is crucial in determining the properties of the resulting film. For example, microscopic inhomogeneities can lead to the formation of cracks and defects that can deteriorate the quality of the film considerably. This type of problem is inherently multiscale and here we study it numerically, using our recently developed method for the simulation of soft polymeric capsules in multicomponent fluids. We focus on the effect of the particle softness on the film microstructure during the drying phase and how it relates to the formation of defects. We quantify the order of the particles by measuring both the Voronoi entropy and the isotropic order parameter. Surprisingly, both observables exhibit a non-monotonic behaviour when the softness of the particles is increased. We further investigate the correlation between the interparticle interaction and the change in the microstructure during the evaporation phase. We observe that the rigid particles form chain-like structures that tend to scatter into small clusters when the particle softness is increased. This article is part of the theme issue 'Progress in mesoscale methods for fluid dynamics simulation'.
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Affiliation(s)
- M Wouters
- Department of Applied Physics, Eindhoven University of Technology, De Rondom, 70, 5612 AP Eindhoven, The Netherlands
- Helmholtz Institute Erlangen-Nürnberg for Renewable Energy, Forschungszentrum Jülich, Fürther Straße 248, 90429 Nürnberg, Germany
| | - O Aouane
- Helmholtz Institute Erlangen-Nürnberg for Renewable Energy, Forschungszentrum Jülich, Fürther Straße 248, 90429 Nürnberg, Germany
| | - M Sega
- Helmholtz Institute Erlangen-Nürnberg for Renewable Energy, Forschungszentrum Jülich, Fürther Straße 248, 90429 Nürnberg, Germany
| | - J Harting
- Helmholtz Institute Erlangen-Nürnberg for Renewable Energy, Forschungszentrum Jülich, Fürther Straße 248, 90429 Nürnberg, Germany
- Department of Chemical and Biological Engineering and Department of Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Fürther Straße 248, 90429 Nürnberg, Germany
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Breeschoten J, Wouters M, Hilarius D, Haanen J, Blank C, Aarts M, Van den Berkmortel F, de Groot J, Hospers G, Kapiteijn E, Piersma D, Van Rijn R, Suijkerbuijk K, Blokx W, Tije AT, Van der Veldt A, Vreugdenhil G, Boers-Sonderen M, van den Eertwegh A. 37P First-line BRAF/MEK-inhibitors versus anti-PD-1 monotherapy in BRAFV600-mutant advanced melanoma patients: A propensity-matched survival analysis. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.10.524] [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] Open
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Maliko N, Bijker N, Wouters M, Vrancken-Peeters M. Defining a “dedicated” breast cancer team. Eur J Cancer 2020. [DOI: 10.1016/s0959-8049(20)30628-6] [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: 10/23/2022]
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Van Den Heuvel N, Reijers I, Versluis J, Rozeman E, Jóźwiak K, Blommers K, Saw R, Suijkerbuijk K, Kapiteijn E, Van der Veldt A, Hospers G, Spillane A, Pennington T, Wouters M, Menzies A, van Akkooi A, de Poll-Franse LV, Long G, Blank C, Boekhout A. 1085P Health-related quality of life in stage III melanoma patients treated with neoadjuvant ipilimumab and nivolumab followed by index lymph node excision only versus therapeutic lymph node dissection: 24-week results of the PRADO trial. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.1209] [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: 10/23/2022] Open
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Ismail R, de Boer A, van Dartel M, Hilarius D, van Zeijl M, van den Eertwegh F, Aarts M, Van den Berkmortel F, Boers-Sonderen M, de Groot J, Haanen J, Hospers G, Kapiteijn E, Piersma D, van Rijn R, Suijkerbuijk K, Tije AT, Van der Veldt A, Vreugdenhil G, Wouters M. 1103P Long-term survival of real-world advanced melanoma patients treated with targeted therapy. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.1226] [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: 11/27/2022] Open
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17
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van Akkooi A, Schermers B, Franke V, Wouters M, Zuur C, Klop W, Rozeman E, van de Wiel B, Ruers T, Blank C. Pilot study: Localizing target lymph node using a magnetic marker allows reliable and representative judgement of pathological responses after neo-adjuvant ipilimumab (IPI) + nivolumab (NIVO) in macroscopic stage III melanoma. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy289.053] [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: 11/13/2022] Open
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18
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Franke V, Berger D, Klop W, van der Hiel B, van de Wiel B, Ter Meulen S, Wouters M, van Houdt W, van Akkooi A. High response rate with T-VEC in early metastatic melanoma (stage IIIB/C-IVM1a). Ann Oncol 2018. [DOI: 10.1093/annonc/mdy289.009] [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: 11/14/2022] Open
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Bonora E, Bianco F, Stanzani A, Giancola F, Astolfi A, Indio V, Evangelisti C, Martelli AM, Boschetti E, Lugaresi M, Ioannou A, Torresan F, Stanghellini V, Clavenzani P, Seri M, Moonen A, Van Beek K, Wouters M, Boeckxstaens GE, Zaninotto G, Mattioli S, De Giorgio R. INPP4B overexpression and c-KIT downregulation in human achalasia. Neurogastroenterol Motil 2018; 30:e13346. [PMID: 29644781 DOI: 10.1111/nmo.13346] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Accepted: 03/06/2018] [Indexed: 02/08/2023]
Abstract
BACKGROUND Achalasia is a rare motility disorder characterized by myenteric neuron and interstitial cells of Cajal (ICC) abnormalities leading to deranged/absent peristalsis and lack of relaxation of the lower esophageal sphincter. The mechanisms contributing to neuronal and ICC changes in achalasia are only partially understood. Our goal was to identify novel molecular features occurring in patients with primary achalasia. METHODS Esophageal full-thickness biopsies from 42 (22 females; age range: 16-82 years) clinically, radiologically, and manometrically characterized patients with primary achalasia were examined and compared to those obtained from 10 subjects (controls) undergoing surgery for uncomplicated esophageal cancer (or upper stomach disorders). Tissue RNA extracted from biopsies of cases and controls was used for library preparation and sequencing. Data analysis was performed with the "edgeR" option of R-Bioconductor. Data were validated by real-time RT-PCR, western blotting and immunohistochemistry. KEY RESULTS Quantitative transcriptome evaluation and cluster analysis revealed 111 differentially expressed genes, with a P ≤ 10-3 . Nine genes with a P ≤ 10-4 were further validated. CYR61, CTGF, c-KIT, DUSP5, EGR1 were downregulated, whereas AKAP6 and INPP4B were upregulated in patients vs controls. Compared to controls, immunohistochemical analysis revealed a clear increase in INPP4B, whereas c-KIT immunolabeling resulted downregulated. As INPP4B regulates Akt pathway, we used western blot to show that phospho-Akt was significantly reduced in achalasia patients vs controls. CONCLUSIONS & INFERENCES The identification of altered gene expression, including INPP4B, a regulator of the Akt pathway, highlights novel signaling pathways involved in the neuronal and ICC changes underlying primary achalasia.
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Affiliation(s)
- E Bonora
- Department of Medical and Surgical Sciences, DIMEC, University of Bologna and St. Orsola-Malpighi Hospital, Bologna, Italy
| | - F Bianco
- Department of Medical and Surgical Sciences, DIMEC, University of Bologna and St. Orsola-Malpighi Hospital, Bologna, Italy.,Department of Medical and Veterinary Sciences, DIMEVET, University of Bologna, Bologna, Italy
| | - A Stanzani
- Department of Medical and Surgical Sciences, DIMEC, University of Bologna and St. Orsola-Malpighi Hospital, Bologna, Italy.,Department of Medical and Veterinary Sciences, DIMEVET, University of Bologna, Bologna, Italy
| | - F Giancola
- Department of Medical and Surgical Sciences, DIMEC, University of Bologna and St. Orsola-Malpighi Hospital, Bologna, Italy.,Department of Medical and Veterinary Sciences, DIMEVET, University of Bologna, Bologna, Italy.,Centro di Ricerca Biomedica Applicata, St.Orsola-Malpighi Hospital, Bologna, Italy
| | - A Astolfi
- Interdepartmental Center for Cancer Research "G. Prodi" (CIRC), University of Bologna, Bologna, Italy
| | - V Indio
- Interdepartmental Center for Cancer Research "G. Prodi" (CIRC), University of Bologna, Bologna, Italy
| | - C Evangelisti
- Department of Experimental Medicine, DIMES, University of Bologna, Bologna, Italy
| | - A M Martelli
- Department of Experimental Medicine, DIMES, University of Bologna, Bologna, Italy
| | - E Boschetti
- Department of Medical and Surgical Sciences, DIMEC, University of Bologna and St. Orsola-Malpighi Hospital, Bologna, Italy.,Centro di Ricerca Biomedica Applicata, St.Orsola-Malpighi Hospital, Bologna, Italy
| | - M Lugaresi
- Department of Medical and Surgical Sciences, DIMEC, University of Bologna and St. Orsola-Malpighi Hospital, Bologna, Italy
| | - A Ioannou
- Department of Medical and Surgical Sciences, DIMEC, University of Bologna and St. Orsola-Malpighi Hospital, Bologna, Italy
| | - F Torresan
- Department of Digestive System, St. Orsola-Malpighi Hospital, Bologna, Italy
| | - V Stanghellini
- Department of Medical and Surgical Sciences, DIMEC, University of Bologna and St. Orsola-Malpighi Hospital, Bologna, Italy
| | - P Clavenzani
- Department of Medical and Veterinary Sciences, DIMEVET, University of Bologna, Bologna, Italy
| | - M Seri
- Department of Medical and Surgical Sciences, DIMEC, University of Bologna and St. Orsola-Malpighi Hospital, Bologna, Italy
| | - A Moonen
- Translational Research in GastroIntestinal Disorders (TARGID), Department of Clinical and Experimental Medicine, KU Leuven University, Leuven, Belgium
| | - K Van Beek
- Translational Research in GastroIntestinal Disorders (TARGID), Department of Clinical and Experimental Medicine, KU Leuven University, Leuven, Belgium
| | - M Wouters
- Translational Research in GastroIntestinal Disorders (TARGID), Department of Clinical and Experimental Medicine, KU Leuven University, Leuven, Belgium
| | - G E Boeckxstaens
- Translational Research in GastroIntestinal Disorders (TARGID), Department of Clinical and Experimental Medicine, KU Leuven University, Leuven, Belgium
| | - G Zaninotto
- Division of Surgery, Imperial College London, London, UK
| | - S Mattioli
- Department of Medical and Surgical Sciences, DIMEC, University of Bologna and St. Orsola-Malpighi Hospital, Bologna, Italy
| | - R De Giorgio
- Department of Medical Sciences, Nuovo Arcispedale S.Anna at Cona (Ferrara), University of Ferrara, Ferrara, Italy
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Rodriguez AM, Hamilton P, Wouters M, Nelson B. PO-401 Tumour stem cell characteristics are negatively associated with anti-cancer immunity in diverse solid cancers. ESMO Open 2018. [DOI: 10.1136/esmoopen-2018-eacr25.913] [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: 11/03/2022] Open
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21
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Hoeijmakers F, Heineman D, Beck N, Klamer J, Wouters M, Schreurs W. F-046MEDIASTINOSCOPY FOR MEDIASTINAL STAGING OF NON-SMALL CELL LUNG CANCER: SURGICAL PERFORMANCE ACCORDING TO CURRENT GUIDELINES IN THE NETHERLANDS. Interact Cardiovasc Thorac Surg 2017. [DOI: 10.1093/icvts/ivx280.046] [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: 11/13/2022] Open
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22
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Van Groningen J, Ceyisakar I, Gietelink L, Henneman D, Van der Harst E, Westerterp M, Marang-van de Mheen P, Tollenaar R, Lingsma H, Wouters M. Identifying best performing hospitals in colorectal cancer care; is it possible? Eur J Cancer 2017. [DOI: 10.1016/s0959-8049(17)30299-x] [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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23
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Madu M, Marion D, Van der Hage J, Józwiak K, Wouters M, Van Akkooi A. Isolated limb perfusion for melanoma is safe and effective in elderly patients. Eur J Cancer 2017. [DOI: 10.1016/s0959-8049(17)30493-8] [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: 10/20/2022]
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24
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Madu M, Timmerman P, Wouters M, Van der Hiel B, Van der Hage J, Van Akkooi A. PET/CT surveillance detects asymptomatic recurrences in stage IIIB and IIIC melanoma patients: a prospective cohort study. Eur J Cancer 2017. [DOI: 10.1016/s0959-8049(17)30496-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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25
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Madu M, Wouters M, Klop M, Van der Hiel B, Van de Wiel B, Jóźwiak K, Van der Hage J, Van Akkooi A. Clinical prognostic markers in stage IIIB melanoma. Eur J Cancer 2017. [DOI: 10.1016/s0959-8049(17)30494-x] [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: 10/20/2022]
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Jochems A, Schouwenburg M, Aarts M, van den Berkmortel F, van den Eertwegh A, Groenewegen G, de Groot JW, Haanen J, Hospers G, Kapiteijn E, Koornstra R, Kruit W, Leeneman B, Louwman M, Piersma D, van Rijn R, Ten Tije A, Vreugdenhil G, Wouters M, van der Hoeven J. Real-world survival results of metastatic melanoma patients treated with ipilimumab in the Netherlands. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw379.16] [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: 11/14/2022] Open
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27
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Schouwenburg M, Jochems A, Aarts M, Berkmortel F, Eertwegh A, Franken M, Groenewegen G, de Groot JW, Haanen J, Hospers G, Kapiteijn E, Koornstra R, Kruit W, Louwman M, Piersma D, van Rijn R, Ten Tije A, Vreugdenhil G, Wouters M, van der Hoeven J. Survival in BRAF-mutant metastatic melanoma in the real-world setting: results from the Dutch Melanoma Treatment Registry. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw379.34] [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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Madu M, Wouters M, Klop M, Van der Hiel B, Van der Wiel B, Van der Hage J, Van Akkooi A. 500. FDG-PET surveillance imaging in high-risk melanoma patients: Time for change? Eur J Surg Oncol 2016. [DOI: 10.1016/j.ejso.2016.06.297] [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: 10/21/2022] Open
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29
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Van Groningen J, Wouters M, Beets G, Henneman D, Marang van de Mheen P. 115. Most important factors to achieve the best hospital performance on serious complications, ‘failure to rescue’ and postoperative mortality in colorectal cancer surgery. Eur J Surg Oncol 2016. [DOI: 10.1016/j.ejso.2016.06.121] [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: 10/21/2022] Open
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Van Bommel A, Wouters M, Mak K, Stowell C, Peake M. 3022 Defining a standard set of patient-centered outcomes for patients with lung cancer. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)31665-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Ten Berge M, Heineman D, Schreurs W, Wouters M. P-245DISCREPANCY BETWEEN CLINICAL AND PATHOLOGICAL TNM STAGE IN PATIENTS WITH NON-SMALL CELL LUNG CANCER AND THE LONG-TERM SURVIVAL. Interact Cardiovasc Thorac Surg 2015. [DOI: 10.1093/icvts/ivv204.245] [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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32
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Rossi M, Peulen H, van Tinteren H, Wouters M, Sonke JJ, Baas P, Smit E, Belderbos J. Outcome After Sbrt for Potentially Operable Nsclc Patients. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv048.12] [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: 11/13/2022] Open
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33
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Siesling S, Tjan-Heijnen V, de Roos M, Snel Y, van Dalen T, Wouters M, Struikmans H, van der Hoeven K, Maduro J, Visser O. Impact of Hospital Volume on Breast Cancer Outcome: A Population Based Study in the Netherlands. Value Health 2014; 17:A620. [PMID: 27202179 DOI: 10.1016/j.jval.2014.08.2195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
- S Siesling
- Comprehensive Cancer Centre the Netherlands (IKNL), Utrecht, The Netherlands
| | - V Tjan-Heijnen
- Maastricht University Medical Center, Maastricht, The Netherlands
| | - M de Roos
- Rivierenland Hospital, Tiel, The Netherlands
| | - Y Snel
- Association of General Hospitals, Utrecht, The Netherlands
| | - T van Dalen
- Diakonessen Hospital, Utrecht, The Netherlands
| | - M Wouters
- Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - H Struikmans
- Leiden University Medical Centre, Leiden, The Netherlands
| | | | - J Maduro
- University Medical Centre Groningen, Groningen, The Netherlands
| | - O Visser
- (9)Comprehensive Cancer Centre the Netherlands, Utrecht, The Netherlands
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ten Berge M, van Huijstee PJ, Damhuis R, Wouters M, Schreurs WH. F-118 * SAFE INTRODUCTION OF VIDEO-ASSISTED THORACOSCOPIC SURGERY IN THE NETHERLANDS: FIRST RESULTS OF A NATIONWIDE AUDIT. Interact Cardiovasc Thorac Surg 2014. [DOI: 10.1093/icvts/ivu167.118] [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: 11/14/2022] Open
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Berge MT, Steup WH, Veldman PHJM, Wouters M, Schreurs WH. P-212 * THE DUTCH LUNG SURGERY AUDIT. Interact Cardiovasc Thorac Surg 2014. [DOI: 10.1093/icvts/ivu167.212] [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: 11/13/2022] Open
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Buekenhoudt A, Bisignano F, De Luca G, Vandezande P, Wouters M, Verhulst K. Unravelling the solvent flux behaviour of ceramic nanofiltration and ultrafiltration membranes. J Memb Sci 2013. [DOI: 10.1016/j.memsci.2013.03.032] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [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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Cerna R, Léger Y, Paraïso T, Wouters M, Morier-Genoud F, Portella-Oberli M, Deveaud B. Ultrafast tristable spin memory of a coherent polariton gas. Nat Commun 2013; 4:2008. [DOI: 10.1038/ncomms3008] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2012] [Accepted: 05/15/2013] [Indexed: 11/09/2022] Open
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van Poppel M, Oostdam N, Wouters M, Eekhoff M, van Mechelen W. FitFor2: Effects of an exercise training program on the incidence of gestational diabetes. J Sci Med Sport 2012. [DOI: 10.1016/j.jsams.2012.11.833] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Manni F, Lagoudakis KG, André R, Wouters M, Deveaud B. Penrose-Onsager criterion validation in a one-dimensional polariton condensate. Phys Rev Lett 2012; 109:150409. [PMID: 23102285 DOI: 10.1103/physrevlett.109.150409] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Indexed: 06/01/2023]
Abstract
We perform quantum tomography on one-dimensional polariton condensates, spontaneously occurring in linear disorder valleys in a CdTe planar microcavity sample. By the use of optical interferometric techniques, we determine the first-order coherence function and the amplitude and phase of the order parameter of the condensate, providing a full reconstruction of the single particle density matrix for the polariton system. The experimental data are used as input to theoretically test the consistency of the Penrose-Onsager criterion for Bose-Einstein condensation in the framework of nonequilibrium polariton condensates. The results confirm the pertinence and validity of the criterion for a nonequilibrium condensed gas.
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Affiliation(s)
- F Manni
- Institute of Condensed Matter Physics, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
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Luitjes S, Wouters M, Franx A, Bolte A, de Groot C, van Tulder M, Hermens R. PP095. Guideline-based development of quality indicators for hypertensive diseases in pregnancy. Pregnancy Hypertens 2012; 2:291-2. [PMID: 26105417 DOI: 10.1016/j.preghy.2012.04.206] [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: 11/16/2022]
Abstract
INTRODUCTION Hypertensive disorders in pregnancy are one of the main causes of maternal morbidity and mortality. Internationally, several organizations have developed clinical guidelines to assist professionals and to supply patients with the best possible care. To improve the care for this group of patients, insight into the application of clinical guidelines in daily practice is needed. Valid quality indicators are necessary to estimate actual guideline adherence. In this study, we developed a set of valid guidelines based quality indicators for hypertensive diseases in pregnancy. OBJECTIVES None. METHODS A systematic RAND-modified Delphi method was used to develop a set of quality indicators based on evidence-based guidelines and the literature, about hypertension and pregnancy. Experts' opinions were used to select the indicators regarding specific criteria such as efficacy, level of health gain and potential for care improvement. RESULTS A representative set of 14 quality indicators was selected from 48 initial guideline recommendations. Indicators concerned both professional performance and organisation of care for patients with hypertension in pregnancy. CONCLUSION This study describes the systematic, stepwise method used to develop quality indicators that can be used to monitor care for hypertensive diseases in pregnancy.
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Affiliation(s)
- S Luitjes
- EMGO+ Institute for Health and Care Research, VU University, Amsterdam, the Netherlands; Obstetrics and Gynaecology, Vrije University Medical Centre Amsterdam, Amsterdam, the Netherlands
| | - M Wouters
- Obstetrics and Gynaecology, Vrije University Medical Centre Amsterdam, Amsterdam, the Netherlands
| | - A Franx
- Obstetrics and Gynaecology, University Medical Centre Utrecht, Utrecht, the Netherlands
| | - A Bolte
- Obstetrics and Gynaecology, Vrije University Medical Centre Amsterdam, Amsterdam, the Netherlands
| | - C de Groot
- Obstetrics and Gynaecology, Vrije University Medical Centre Amsterdam, Amsterdam, the Netherlands
| | - M van Tulder
- EMGO+ Institute for Health and Care Research, VU University, Amsterdam, the Netherlands; Department of Health Sciences, Faculty of Earth & Life Sciences, VU University, Amsterdam, the Netherlands
| | - R Hermens
- Scientific Institute for Quality of Health Care (IQ healthcare), Radboud University Nijmegen Medical Centre, Nijmegen, the Netherlands
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Luitjes S, Mesri K, Wouters M, van Tulder M, Hermens R. PP167. A process evaluation of an innovative implementation strategy of the Dutch guidelines on hypertensive disorders in pregnancy using a computerized decision support system. Pregnancy Hypertens 2012; 2:329-30. [DOI: 10.1016/j.preghy.2012.04.278] [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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Martijnse I, van Leersum N, van de Velde C, Rutten H, Wouters M. 6001 ORAL Surgical Care in Low Rectal Cancer Patients Can Be Improved – an Analysis of 4084 Patients From the Dutch Surgical Colorectal Audit (DSCA). Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)71646-x] [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: 11/26/2022]
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van Leersum N, van der Hoeven K, Tollenaar R, Wouters M. 6108 POSTER Adjuvant Chemotherapy for Colon Cancer in the Netherlands: Who Are We Treating Actually? Eur J Cancer 2011. [DOI: 10.1016/s0959-8049(11)71753-1] [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: 11/27/2022]
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Kohnle V, Léger Y, Wouters M, Richard M, Portella-Oberli MT, Deveaud-Plédran B. From single particle to superfluid excitations in a dissipative polariton gas. Phys Rev Lett 2011; 106:255302. [PMID: 21770650 DOI: 10.1103/physrevlett.106.255302] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2010] [Revised: 04/28/2011] [Indexed: 05/31/2023]
Abstract
Using an angle-resolved heterodyne four-wave-mixing technique, we probe the low momentum excitation spectrum of a coherent polariton gas. The experimental results are well captured by the Bogoliubov transformation which describes the transition from single particle excitations of a normal fluid to soundlike excitations of a superfluid. In a dense coherent polariton gas, we find all the characteristics of a Bogoliubov transformation, i.e., the positive and negative energy branch with respect to the polariton gas energy at rest, soundlike shapes for the excitations dispersion, intensity, and linewidth ratio between the two branches in agreement with the theory. The influence of the nonequilibrium character of the polariton gas is shown by a careful analysis of its dispersion.
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Affiliation(s)
- V Kohnle
- Institute of Condensed Matter Physics, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland.
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van Schooneveld E, Wouters M, Van der Auwera I, Peeters D, Huget P, van Dam PA, Vermeulen PB, Van Laere SJ, Dirix LY. Detection of circulating miRNAs in serum from patients with breast cancer and their association with the presence of metastatic disease. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.10506] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Manni F, Lagoudakis KG, Pietka B, Fontanesi L, Wouters M, Savona V, André R, Deveaud-Plédran B. Polariton condensation in a one-dimensional disordered potential. Phys Rev Lett 2011; 106:176401. [PMID: 21635053 DOI: 10.1103/physrevlett.106.176401] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2011] [Revised: 03/24/2011] [Indexed: 05/30/2023]
Abstract
We study the coherence and density modulation of a nonequilibrium exciton-polariton condensate in a one-dimensional valley with disorder. By means of interferometric measurements we evidence a modulation of the first-order coherence function and we relate it to a disorder-induced modulation of the condensate density, that increases as the pump power is increased. The nonmonotonic spatial coherence function is found to be the result of the strong nonequilibrium character of the one-dimensional system, in the presence of disorder.
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Affiliation(s)
- F Manni
- Institute of Condensed Matter Physics, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland.
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Lagoudakis KG, Manni F, Pietka B, Wouters M, Liew TCH, Savona V, Kavokin AV, André R, Deveaud-Plédran B. Probing the dynamics of spontaneous quantum vortices in polariton superfluids. Phys Rev Lett 2011; 106:115301. [PMID: 21469871 DOI: 10.1103/physrevlett.106.115301] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2010] [Indexed: 05/30/2023]
Abstract
The experimental investigation of spontaneously created vortices is of utmost importance for the understanding of quantum phase transitions towards a superfluid phase, especially for two-dimensional systems that are expected to be governed by the Berezinski-Kosterlitz-Thouless physics. By means of time-resolved near-field interferometry we track the path of such vortices, created at random locations in an exciton-polariton condensate under pulsed nonresonant excitation, to their final pinning positions imposed by the stationary disorder. We formulate a theoretical model that successfully reproduces the experimental observations.
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Affiliation(s)
- K G Lagoudakis
- Institute of Condensed Matter Physics, Ecole Polytechnique Fédérale de Lausanne, CH-1015, Lausanne, Switzerland
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48
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Lagoudakis KG, Pietka B, Wouters M, André R, Deveaud-Plédran B. Coherent oscillations in an exciton-polariton Josephson junction. Phys Rev Lett 2010; 105:120403. [PMID: 20867617 DOI: 10.1103/physrevlett.105.120403] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2010] [Indexed: 05/29/2023]
Abstract
We report on the observation of spontaneous coherent oscillations in a microcavity polariton bosonic Josephson junction. Condensation of exciton polaritons here takes place under incoherent excitation in a double potential well naturally formed in the disorder. Coherent oscillations set on at an excitation power well above the condensation threshold. The time resolved population and phase dynamics reveal the analogy with the ac Josephson effect. A theoretical two-mode model describes the observed effects, explaining how the different realizations of the pulsed experiment can be in phase.
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Affiliation(s)
- K G Lagoudakis
- ICMP, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
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Cerda-Méndez EA, Krizhanovskii DN, Wouters M, Bradley R, Biermann K, Guda K, Hey R, Santos PV, Sarkar D, Skolnick MS. Polariton condensation in dynamic acoustic lattices. Phys Rev Lett 2010; 105:116402. [PMID: 20867591 DOI: 10.1103/physrevlett.105.116402] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2010] [Revised: 08/06/2010] [Indexed: 05/29/2023]
Abstract
We demonstrate that the tunable potential introduced by a surface acoustic wave on a homogeneous polariton condensate leads to fragmentation of the condensate into an array of wires which move with the acoustic velocity. Reduction of the spatial coherence of the condensate emission along the surface acoustic wave direction is attributed to the suppression of coupling between the spatially modulated condensates. Interparticle interactions observed at high polariton densities screen the acoustic potential, partially reversing its effect on spatial coherence.
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Paraïso TK, Wouters M, Léger Y, Morier-Genoud F, Deveaud-Plédran B. Multistability of a coherent spin ensemble in a semiconductor microcavity. Nat Mater 2010; 9:655-660. [PMID: 20601942 DOI: 10.1038/nmat2787] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2010] [Accepted: 05/22/2010] [Indexed: 05/29/2023]
Abstract
Coherent manipulation of spin ensembles is a key issue in the development of spintronics. In particular, multivalued spin switching may lead to new schemes of logic gating and memories. This phenomenon has been studied with atom vapours 30 years ago, but is still awaited in the solid state. Here, we demonstrate spin multistability with microcavity polaritons in a trap. Owing to the spinor nature of these light-matter quasiparticles and to the anisotropy of their interactions, we can optically control the spin state of a single confined level by tuning the excitation power, frequency and polarization. First, we realize high-efficiency power-dependent polarization switching. Then, at constant excitation power, we evidence polarization hysteresis and determine the conditions for realizing multivalued spin switching. Finally, we demonstrate an unexpected regime, where our system behaves as a high-contrast spin trigger. These results open new pathways to the development of advanced spintronics devices and to the realization of multivalued logic circuits.
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Affiliation(s)
- T K Paraïso
- Laboratory of Quantum Optoelectronics, EPFL, CH-1015, Lausanne, Switzerland.
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