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Lei Y, Al Delbany D, Krivec N, Regin M, Couvreu de Deckersberg E, Janssens C, Ghosh M, Sermon K, Spits C. SALL3 mediates the loss of neuroectodermal differentiation potential in human embryonic stem cells with chromosome 18q loss. Stem Cell Reports 2024; 19:562-578. [PMID: 38552632 DOI: 10.1016/j.stemcr.2024.03.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 02/29/2024] [Accepted: 03/01/2024] [Indexed: 04/12/2024] Open
Abstract
Human pluripotent stem cell (hPSC) cultures are prone to genetic drift, because cells that have acquired specific genetic abnormalities experience a selective advantage in vitro. These abnormalities are highly recurrent in hPSC lines worldwide, but their functional consequences in differentiating cells are scarcely described. In this work, we show that the loss of chromosome 18q impairs neuroectoderm commitment and that downregulation of SALL3, a gene located in the common 18q loss region, is responsible for this failed neuroectodermal differentiation. Knockdown of SALL3 in control lines impaired differentiation in a manner similar to the loss of 18q, and transgenic overexpression of SALL3 in hESCs with 18q loss rescued the differentiation capacity of the cells. Finally, we show that loss of 18q and downregulation of SALL3 leads to changes in the expression of genes involved in pathways regulating pluripotency and differentiation, suggesting that these cells are in an altered state of pluripotency.
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Affiliation(s)
- Yingnan Lei
- Research Group Reproduction and Genetics, Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel, Brussels, Laarbeeklaan 103, 1090 Brussels, Belgium
| | - Diana Al Delbany
- Research Group Reproduction and Genetics, Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel, Brussels, Laarbeeklaan 103, 1090 Brussels, Belgium
| | - Nuša Krivec
- Research Group Reproduction and Genetics, Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel, Brussels, Laarbeeklaan 103, 1090 Brussels, Belgium
| | - Marius Regin
- Research Group Reproduction and Genetics, Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel, Brussels, Laarbeeklaan 103, 1090 Brussels, Belgium
| | - Edouard Couvreu de Deckersberg
- Research Group Reproduction and Genetics, Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel, Brussels, Laarbeeklaan 103, 1090 Brussels, Belgium
| | - Charlotte Janssens
- Research Group Reproduction and Genetics, Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel, Brussels, Laarbeeklaan 103, 1090 Brussels, Belgium
| | - Manjusha Ghosh
- Research Group Reproduction and Genetics, Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel, Brussels, Laarbeeklaan 103, 1090 Brussels, Belgium
| | - Karen Sermon
- Research Group Reproduction and Genetics, Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel, Brussels, Laarbeeklaan 103, 1090 Brussels, Belgium
| | - Claudia Spits
- Research Group Reproduction and Genetics, Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel, Brussels, Laarbeeklaan 103, 1090 Brussels, Belgium.
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De Vos K, Janssens C, Jacobs L, Campforts B, Boere E, Kozicka M, Havlík P, Folberth C, Balkovič J, Maertens M, Govers G. Rice availability and stability in Africa under future socio-economic development and climatic change. Nat Food 2023:10.1038/s43016-023-00770-5. [PMID: 37337082 DOI: 10.1038/s43016-023-00770-5] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Accepted: 05/09/2023] [Indexed: 06/21/2023]
Abstract
As Africa is facing multiple challenges related to food security, frameworks integrating production and availability are urgent for policymaking. Attention should be given not only to gradual socio-economic and climatic changes but also to their temporal variability. Here we present an integrated framework that allows one to assess the impacts of socio-economic development, gradual climate change and climate anomalies. We apply this framework to rice production and consumption in Africa whereby we explicitly account for the continent's dependency on imported rice. We show that socio-economic development dictates rice availability, whereas climate change has only minor effects in the long term and is predicted not to amplify supply shocks. Still, rainfed-dominated or self-producing regions are sensitive to local climatic anomalies, while trade dominates stability in import-dependent regions. Our study suggests that facilitating agricultural development and limiting trade barriers are key in relieving future challenges to rice availability and stability.
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Affiliation(s)
- Koen De Vos
- Department of Earth and Environmental Sciences, KU Leuven, Heverlee, Belgium.
- Research Foundation Flanders, Brussels, Belgium.
- Biodiversity and Natural Resources Program, International Institute for Applied Systems Analysis, Laxenburg, Austria.
| | - Charlotte Janssens
- Department of Earth and Environmental Sciences, KU Leuven, Heverlee, Belgium
- Biodiversity and Natural Resources Program, International Institute for Applied Systems Analysis, Laxenburg, Austria
| | - Liesbet Jacobs
- Department of Earth and Environmental Sciences, KU Leuven, Heverlee, Belgium
- Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, Amsterdam, the Netherlands
| | - Benjamin Campforts
- Department of Earth Sciences, VU University Amsterdam, Amsterdam, the Netherlands
| | - Esther Boere
- Biodiversity and Natural Resources Program, International Institute for Applied Systems Analysis, Laxenburg, Austria
| | - Marta Kozicka
- Biodiversity and Natural Resources Program, International Institute for Applied Systems Analysis, Laxenburg, Austria
| | - Petr Havlík
- Biodiversity and Natural Resources Program, International Institute for Applied Systems Analysis, Laxenburg, Austria
| | - Christian Folberth
- Biodiversity and Natural Resources Program, International Institute for Applied Systems Analysis, Laxenburg, Austria
| | - Juraj Balkovič
- Biodiversity and Natural Resources Program, International Institute for Applied Systems Analysis, Laxenburg, Austria
| | - Miet Maertens
- Department of Earth and Environmental Sciences, KU Leuven, Heverlee, Belgium
| | - Gerard Govers
- Department of Earth and Environmental Sciences, KU Leuven, Heverlee, Belgium
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Van Der Kelen A, Okutman Ö, Javey E, Serdarogullari M, Janssens C, Ghosh MS, Dequeker BJH, Perold F, Kastner C, Kieffer E, Segers I, Gheldof A, Hes FJ, Sermon K, Verpoest W, Viville S. A systematic review and evidence assessment of monogenic gene-disease relationships in human female infertility and differences in sex development. Hum Reprod Update 2023; 29:218-232. [PMID: 36571510 DOI: 10.1093/humupd/dmac044] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [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: 09/30/2022] [Revised: 12/05/2022] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND As in other domains of medicine, high-throughput sequencing methods have led to the identification of an ever-increasing number of gene variants in the fields of both male and female infertility. The increasing number of recently identified genes allows an accurate diagnosis for previously idiopathic cases of female infertility and more appropriate patient care. However, robust evidence of the gene-disease relationships (GDR) allowing the proper translation to clinical application is still missing in many cases. OBJECTIVE AND RATIONALE An evidence-based curation of currently identified genes involved in female infertility and differences in sex development (DSD) would significantly improve both diagnostic performance and genetic research. We therefore performed a systematic review to summarize current knowledge and assess the available GDR. SEARCH METHODS PRISMA guidelines were applied to curate all available information from PubMed and Web of Science on genetics of human female infertility and DSD leading to infertility, from 1 January 1988 to 1 November 2021. The reviewed pathologies include non-syndromic as well as syndromic female infertility, and endocrine and reproductive system disorders. The evidence that an identified phenotype is caused by pathogenic variants in a specific gene was assessed according to a standardized scoring system. A final score (no evidence, limited, moderate, strong, or definitive) was assigned to every GDR. OUTCOMES A total of 45 271 publications were identified and screened for inclusion of which 1078 were selected for gene and variant extraction. We have identified 395 genes and validated 466 GDRs covering all reported monogenic causes of female infertility and DSD. Furthermore, we present a genetic diagnostic flowchart including 105 genes with at least moderate evidence for female infertility and suggest recommendations for future research. The study did not take into account associated genetic risk factor(s) or oligogenic/polygenic causes of female infertility. WIDER IMPLICATIONS We have comprehensively reviewed the existing research on the genetics of female infertility and DSD, which will enable the development of diagnostic panels using validated genes. Whole genome analysis is shifting from predominantly research to clinical application, increasing its diagnostic potential. These new diagnostic possibilities will not only decrease the number of idiopathic cases but will also render genetic counselling more effective for infertile patients and their families.
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Affiliation(s)
- Annelore Van Der Kelen
- Clinical Sciences, Research Group Reproduction and Genetics, Centre for Medical Genetics, Vrije Universiteit Brussel (VUB), Universitair Ziekenhuis Brussel (UZ Brussel), Brussels, Belgium
| | - Özlem Okutman
- Laboratoire de Génétique Médicale LGM, Institut de Génétique Médicale d'Alsace IGMA, INSERM UMR 1112, Université de Strasbourg, Strasbourg, France.,Laboratoire de Diagnostic Génétique, Unité de Génétique de l'infertilité (UF3472), Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Elodie Javey
- Laboratoires de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Münevver Serdarogullari
- Department of Histology and Embryology, Faculty of Medicine, Cyprus International University, Northern Cyprus via Mersin 10, Turkey
| | - Charlotte Janssens
- Research Group Reproduction and Genetics, Vrije Universiteit Brussel (VUB), Brussels, Belgium
| | - Manjusha S Ghosh
- Research Group Reproduction and Genetics, Vrije Universiteit Brussel (VUB), Brussels, Belgium
| | - Bart J H Dequeker
- Clinical Sciences, Research Group Reproduction and Genetics, Centre for Medical Genetics, Vrije Universiteit Brussel (VUB), Universitair Ziekenhuis Brussel (UZ Brussel), Brussels, Belgium
| | - Florence Perold
- Research Group Reproduction and Genetics, Vrije Universiteit Brussel (VUB), Brussels, Belgium
| | - Claire Kastner
- Institut de Génétique Médicale d'Alsace IGMA, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Emmanuelle Kieffer
- Service de Génétique Médicale, Laboratoires de Diagnostic Génétique, Unité de Diagnostic Préimplantatoire (UF9327), Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Ingrid Segers
- Clinical Sciences, Research Group Reproduction and Genetics, Brussels IVF Centre for Reproductive Medicine, Vrije Universiteit Brussel (VUB), Universitair Ziekenhuis Brussel (UZ Brussel), Brussels, Belgium.,Research Group Follicle Biology Laboratory (FOBI), Vrije Universiteit Brussel (VUB), Brussels, Belgium
| | - Alexander Gheldof
- Clinical Sciences, Research Group Reproduction and Genetics, Centre for Medical Genetics, Vrije Universiteit Brussel (VUB), Universitair Ziekenhuis Brussel (UZ Brussel), Brussels, Belgium
| | - Frederik J Hes
- Clinical Sciences, Research Group Reproduction and Genetics, Centre for Medical Genetics, Vrije Universiteit Brussel (VUB), Universitair Ziekenhuis Brussel (UZ Brussel), Brussels, Belgium
| | - Karen Sermon
- Research Group Reproduction and Genetics, Vrije Universiteit Brussel (VUB), Brussels, Belgium
| | - Willem Verpoest
- Clinical Sciences, Research Group Reproduction and Genetics, Brussels IVF Centre for Reproductive Medicine, Vrije Universiteit Brussel (VUB), Universitair Ziekenhuis Brussel (UZ Brussel), Brussels, Belgium
| | - Stéphane Viville
- Laboratoire de Génétique Médicale LGM, Institut de Génétique Médicale d'Alsace IGMA, INSERM UMR 1112, Université de Strasbourg, Strasbourg, France.,Laboratoire de Diagnostic Génétique, Unité de Génétique de l'infertilité (UF3472), Hôpitaux Universitaires de Strasbourg, Strasbourg, France
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Janssens C, Havlík P, Boere E, Palazzo A, Mosnier A, Leclère D, Balkovič J, Maertens M. A sustainable future for Africa through continental free trade and agricultural development. Nat Food 2022; 3:608-618. [PMID: 37118605 DOI: 10.1038/s43016-022-00572-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 07/13/2022] [Indexed: 04/30/2023]
Abstract
Developing and integrating agricultural markets may be key to addressing Africa's sustainability challenges. By modelling trade costs from farm gate to potential import markets across eight African regions, we investigate the impact of individual components of continental free trade and the complementary role of domestic agricultural development through increased market access for farmers and agricultural intensification. We find that free trade would increase intra-African agricultural trade sixfold by 2030 but-since it does not address local supply constraints-outside food imports and undernourishment would reduce only marginally. Agricultural development could almost eliminate undernourishment in Africa by 2050 at only a small cost of increased global greenhouse gas emissions. While continental free trade will be enabled in Africa through the African Continental Free Trade Area, aligning this with local agricultural development policies is crucial to increase intra-African trade gains, promote food security and achieve climate objectives.
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Affiliation(s)
- Charlotte Janssens
- University of Leuven, Department of Earth and Environmental Sciences, Heverlee, Belgium.
- International Institute for Applied System Analysis, Laxenburg, Austria.
| | - Petr Havlík
- International Institute for Applied System Analysis, Laxenburg, Austria
| | - Esther Boere
- International Institute for Applied System Analysis, Laxenburg, Austria
| | - Amanda Palazzo
- International Institute for Applied System Analysis, Laxenburg, Austria
| | - Aline Mosnier
- United Nations Sustainable Development Solutions Network, Paris, France
| | - David Leclère
- International Institute for Applied System Analysis, Laxenburg, Austria
| | - Juraj Balkovič
- International Institute for Applied System Analysis, Laxenburg, Austria
| | - Miet Maertens
- University of Leuven, Department of Earth and Environmental Sciences, Heverlee, Belgium
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5
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Lastrego S, Janssens C, Klein O, Licata L. Attitudes shape implicit temporal trajectories: A quantitative test of the narrative structure of collective memories of colonialism. J Soc Polit Psych 2022. [DOI: 10.5964/jspp.7587] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
This article investigates how Belgian participants’ implicit temporal trajectories regarding the history of Belgian colonialism in the Congo vary as a function of their attitudes towards colonialism and thus create different collective memories. We reasoned that, depending on their attitudes towards Belgian colonialism, individuals may draw on different schematic narrative templates to structure their own implicit temporal trajectory of colonial history. Consequently, we predicted that the shape of individual implicit temporal trajectories should vary according to their attitudes. Specifically, we expected that positive attitudes towards colonialism would be associated with implicit temporal trajectories in which the colonial period is seen as more positive than before and after colonialism, creating an inverted U-shaped implicit temporal trajectory, while negative attitudes towards colonialism should be associated with the opposite trend – U-shaped implicit trajectories. We measured the attitudes towards colonialism of Belgian participants (n = 129), then their social representations of three historical periods: before, during and after Belgian colonialism. Overall, results supported these hypotheses. This study complements previous narrative psychology investigations by bringing quantitative evidence according to which collective memories are structured as implicit temporal trajectories that are in line with people’s attitudes.
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Janssens C, Havlík P, Krisztin T, Baker J, Frank S, Hasegawa T, Leclère D, Ohrel S, Ragnauth S, Schmid E, Valin H, Van Lipzig N, Maertens M. Global hunger and climate change adaptation through international trade. Nat Clim Chang 2020; 10:829-835. [PMID: 33564324 PMCID: PMC7869491 DOI: 10.1038/s41558-020-0847-4] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Accepted: 06/16/2020] [Indexed: 05/21/2023]
Abstract
International trade enables us to exploit regional differences in climate change impacts and is increasingly regarded as a potential adaptation mechanism. Here, we focus on hunger reduction through international trade under alternative trade scenarios for a wide range of climate futures. Under the current level of trade integration, climate change would lead to up to 55 million people who are undernourished in 2050. Without adaptation through trade, the impacts of global climate change would increase to 73 million people who are undernourished (+33%). Reduction in tariffs as well as institutional and infrastructural barriers would decrease the negative impact to 20 million (-64%) people. We assess the adaptation effect of trade and climate-induced specialization patterns. The adaptation effect is strongest for hunger-affected import-dependent regions. However, in hunger-affected export-oriented regions, partial trade integration can lead to increased exports at the expense of domestic food availability. Although trade integration is a key component of adaptation, it needs sensitive implementation to benefit all regions.
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Affiliation(s)
- Charlotte Janssens
- Department of Earth and Environmental Sciences, University of Leuven (KU Leuven), Heverlee, Belgium
- Ecosystems Services and Management Program, International Institute for Applied System Analysis (IIASA), Laxenburg, Austria
| | - Petr Havlík
- Ecosystems Services and Management Program, International Institute for Applied System Analysis (IIASA), Laxenburg, Austria
| | - Tamás Krisztin
- Ecosystems Services and Management Program, International Institute for Applied System Analysis (IIASA), Laxenburg, Austria
| | | | - Stefan Frank
- Ecosystems Services and Management Program, International Institute for Applied System Analysis (IIASA), Laxenburg, Austria
| | - Tomoko Hasegawa
- Ecosystems Services and Management Program, International Institute for Applied System Analysis (IIASA), Laxenburg, Austria
- College of Science and Engineering, Ritsumeikan University, Kusatsu, Japan
| | - David Leclère
- Ecosystems Services and Management Program, International Institute for Applied System Analysis (IIASA), Laxenburg, Austria
| | - Sara Ohrel
- United States Environmental Protection Agency, Washington, DC, USA
| | - Shaun Ragnauth
- United States Environmental Protection Agency, Washington, DC, USA
| | - Erwin Schmid
- Department of Economics and Social Sciences, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Hugo Valin
- Ecosystems Services and Management Program, International Institute for Applied System Analysis (IIASA), Laxenburg, Austria
| | - Nicole Van Lipzig
- Department of Earth and Environmental Sciences, University of Leuven (KU Leuven), Heverlee, Belgium
| | - Miet Maertens
- Department of Earth and Environmental Sciences, University of Leuven (KU Leuven), Heverlee, Belgium
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8
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Abstract
We present the case of a 17-year-old boy, known with homozygous sickle cell disease, who was admitted because of generalised pain. He developed bilateral periorbital oedema and proptosis, without pain or visual disturbances. In addition to hyperhydration, oxygen and analgesia IV antibiotics were started, to cover a possible osteomyelitis. Patients with sickle cell disease are at risk for vaso-occlusive crises, when the abnormally shaped red blood cells aggregate and block the capillaries. Such a crisis typically presents at a location with high bone marrow activity, as the vertebrae and long bones. At an early age, the bone marrow is still active at other sites, for example the orbital wall, and thus infarction can also occur there. Thus, in young persons with sickle cell disease, it is important to consider orbital wall infarction in the differential diagnosis, since the approach is different from osteomyelitis. If the disease is complicated by an orbital compression syndrome, corticosteroids or surgical intervention may be necessary to preserve the vision. In our patient, an MRI of the orbitae demonstrated periorbital oedema with bone anomalies in the orbital and frontal bones, confirming orbital wall infarction. Ophthalmological examination revealed no signs of pressure on the nervus opticus. The patient recovered gradually with conservative treatment.
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Affiliation(s)
- C Janssens
- Department of Paediatrics, University of Antwerp, Antwerp University Hospital , Belgium
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9
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Goossens GA, De Waele Y, Jérôme M, Fieuws S, Janssens C, Stas M, Moons P. Diagnostic accuracy of the Catheter Injection and Aspiration (CINAS) classification for assessing the function of totally implantable venous access devices. Support Care Cancer 2015. [DOI: 10.1007/s00520-015-2839-x] [Citation(s) in RCA: 8] [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: 10/23/2022]
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10
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van Pelt ED, Mescheriakova JY, Makhani N, Ketelslegers IA, Neuteboom RF, Kundu S, Broer L, Janssens C, Catsman-Berrevoets CE, van Duijn CM, Banwell B, Bar-Or A, Hintzen RQ. Risk genes associated with pediatric-onset MS but not with monophasic acquired CNS demyelination. Neurology 2013; 81:1996-2001. [DOI: 10.1212/01.wnl.0000436934.40034eb] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [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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Goossens GA, Jérôme M, Janssens C, Peetermans WE, Fieuws S, Moons P, Verschakelen J, Peerlinck K, Jacquemin M, Stas M. Comparing normal saline versus diluted heparin to lock non-valved totally implantable venous access devices in cancer patients: a randomised, non-inferiority, open trial. Ann Oncol 2013; 24:1892-1899. [PMID: 23553060 DOI: 10.1093/annonc/mdt114] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Heparin has been used for years as a locking solution in totally implantable venous access devices. Normal saline (NS) might be a safe alternative for heparin. However, evidence of non-inferiority of NS versus heparin is lacking. PATIENTS AND METHODS We randomly allocated 802 cancer patients with a newly inserted port either to heparin lock (300 U/3 ml) or to NS lock groups in a 1:1 assignment ratio. The primary outcome was the number of functional complications, which was defined as 'easy injection, impossible aspiration' at port access. Secondary outcomes included all functional problems and catheter-related bacteraemia. We hypothesised that NS locks do not cause more functional problems and catheter-related bacteraemia than heparin locks. Non-inferiority is established if the upper limit of the confidence interval (CI) for the relative risk of NS versus heparin is <1.4. RESULTS Three hundred and eighty-two patients from the NS group and 383 from the heparin lock group were included in the analysis. The incidence rate of our primary outcome (easy injection, impossible aspiration) was 3.70% (95% CI 2.91%-4.69%) and 3.92% (95% CI 3.09%-4.96%) of accesses in the NS and heparin groups, respectively. The relative risk was 0.94% (95% CI 0.67%-1.32%). Catheter-related bloodstream infection was 0.03 per 1000 catheter days in the NS group and 0.10 per 1000 catheter days in the heparin group. CONCLUSION NS is a safe and effective locking solution in implantable ports if combined with a strict protocol for device insertion and maintenance.
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Affiliation(s)
- G A Goossens
- Nursing Centre of Excellence, University Hospitals Leuven, Leuven; Department of Public Health and Primary Care, KU Leuven, Leuven.
| | - M Jérôme
- Nursing Centre of Excellence, University Hospitals Leuven, Leuven
| | - C Janssens
- Nursing Centre of Excellence, University Hospitals Leuven, Leuven
| | - W E Peetermans
- Department of Internal Medicine, University Hospitals Leuven, Leuven
| | - S Fieuws
- Interuniversity Centre for Biostatistics and Statistical Bioinformatics, KU Leuven, Leuven; Interuniversity Centre for Biostatistics and Statistical Bioinformatics, Universiteit Hasselt, Hasselt
| | - P Moons
- Department of Public Health and Primary Care, KU Leuven, Leuven
| | - J Verschakelen
- Department of Radiology, University Hospitals Leuven, Leuven
| | - K Peerlinck
- Centre for Molecular and Vascular Biology, KU Leuven, Leuven
| | - M Jacquemin
- Centre for Molecular and Vascular Biology, KU Leuven, Leuven
| | - M Stas
- Department of Surgical Oncology, University Hospitals Leuven, Leuven, Belgium
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Kerkhof H, Bierma-Zeinstra S, Hofman B, Rivadeneira F, Uitterlinden A, Janssens C, van Meurs J. OP0130 Prediction model for knee osteoarthritis including clinical, genetic and biochemical risk factors. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.1813] [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: 11/03/2022]
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13
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Lurquin C, Van Pel A, Mariamé B, De Plaen E, Szikora JP, Janssens C, Reddehase MJ, Lejeune J, Boon T. Structure of the gene of tum- transplantation antigen P91A: the mutated exon encodes a peptide recognized with Ld by cytolytic T cells. Cell 1989; 58:293-303. [PMID: 2568889 DOI: 10.1016/0092-8674(89)90844-1] [Citation(s) in RCA: 230] [Impact Index Per Article: 6.6] [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: 01/01/2023]
Abstract
Mutagen treatment of mouse P815 tumor cells produces immunogenic mutants that express new transplantation antigens (tum- antigens) recognized by cytolytic T cells. We found that the gene conferring expression of tum- antigen P91A contains 12 exons, encoding a 60 kd protein lacking a typical N-terminal signal sequence. The sequence shows no significant similarity with sequences in current data bases. A mutation that causes expression of the antigen is located in exon 4; it is the only apparent difference between the normal and the antigenic alleles. A short synthetic peptide corresponding to a region of exon 4 located around this mutation makes P815 cells sensitive to lysis by anti-P91A cytolytic T cells. The mutation creates a strong aggretope enabling the peptide to bind the H-2 Ld molecule. Several secondary tumor cell variants that no longer express tum- antigen P91A were found to carry deletions in the gene.
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Affiliation(s)
- C Lurquin
- Ludwig Institute for Cancer Research, Brussels, Belgium
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Martens J, Janssens C, Grobet P, Beyer H, Jacobs P. Isomorphic Substitution of Silicon in SAPO-37. ACTA ACUST UNITED AC 1989. [DOI: 10.1016/s0167-2991(08)61720-6] [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: 03/05/2023]
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Janssens C, Berthelon S. [Homonymous crossed quadranopsia]. Bull Soc Belge Ophtalmol 1973; 165:376-81. [PMID: 4791961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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