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Search Results: 1 - 10 of 285 matches for " Nelissen Sofie "
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Absence of IL-1β positively affects neurological outcome, lesion development and axonal plasticity after spinal cord injury
Boato Francesco,Rosenberger Karen,Nelissen Sofie,Geboes Lies
Journal of Neuroinflammation , 2013, DOI: 10.1186/1742-2094-10-6
Abstract: Precise crosstalk between the nervous and immune systems is important for neuroprotection and axon plasticity after injury. Recently, we demonstrated that IL-1β acts as a potent inducer of neurite outgrowth from organotypic brain slices in vitro, suggesting a potential function of IL-1β in axonal plasticity. Here, we have investigated the effects of IL-1β on axon plasticity during glial scar formation and on functional recovery in a mouse model of spinal cord compression injury (SCI). We used an IL-1β deficiency model (IL-1βKO mice) and administered recombinant IL-1β. In contrast to our hypothesis, the histological analysis revealed a significantly increased lesion width and a reduced number of corticospinal tract fibers caudal to the lesion center after local application of recombinant IL-1β. Consistently, the treatment significantly worsened the neurological outcome after SCI in mice compared with PBS controls. In contrast, the absence of IL-1β in IL-1βKO mice significantly improved recovery from SCI compared with wildtype mice. Histological analysis revealed a smaller lesion size, reduced lesion width and greatly decreased astrogliosis in the white matter, while the number of corticospinal tract fibers increased significantly 5 mm caudal to the lesion in IL-1βKO mice relative to controls. Our study for the first time characterizes the detrimental effects of IL-1β not only on lesion development (in terms of size and glia activation), but also on the plasticity of central nervous system axons after injury.
Transcriptional Profiling of Human Dendritic Cell Populations and Models - Unique Profiles of In Vitro Dendritic Cells and Implications on Functionality and Applicability
Kristina Lundberg, Ann-Sofie Albrekt, Inge Nelissen, Saskia Santegoets, Tanja D. de Gruijl, Sue Gibbs, Malin Lindstedt
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0052875
Abstract: Background Dendritic cells (DCs) comprise heterogeneous populations of cells, which act as central orchestrators of the immune response. Applicability of primary DCs is restricted due to their scarcity and therefore DC models are commonly employed in DC-based immunotherapy strategies and in vitro tests assessing DC function. However, the interrelationship between the individual in vitro DC models and their relative resemblance to specific primary DC populations remain elusive. Objective To describe and assess functionality and applicability of the available in vitro DC models by using a genome-wide transcriptional approach. Methods Transcriptional profiling was performed with four commonly used in vitro DC models (MUTZ-3-DCs, monocyte-derived DCs, CD34-derived DCs and Langerhans cells (LCs)) and nine primary DC populations (dermal DCs, LCs, blood and tonsillar CD123+, CD1c+ and CD141+ DCs, and blood CD16+ DCs). Results Principal Component Analysis showed that transcriptional profiles of each in vitro DC model most closely resembled CD1c+ and CD141+ tonsillar myeloid DCs (mDCs) among primary DC populations. Thus, additional differentiation factors may be required to generate model DCs that more closely resemble other primary DC populations. Also, no model DC stood out in terms of primary DC resemblance. Nevertheless, hierarchical clustering showed clusters of differentially expressed genes among individual DC models as well as primary DC populations. Furthermore, model DCs were shown to differentially express immunologically relevant transcripts and transcriptional signatures identified for each model DC included several immune-associated transcripts. Conclusion The unique transcriptional profiles of in vitro DC models suggest distinct functionality in immune applications. The presented results will aid in the selection of an appropriate DC model for in vitro assays and assist development of DC-based immunotherapy.
Quantum diffusion: a simple, exactly solvable model
Wim Magnus,Kwinten Nelissen
Physics , 2012,
Abstract: We propose a simple quantum mechanical model describing the time dependent diffusion current between two fermion reservoirs that were initially disconnected and characterized by different densities or chemical potentials. The exact, analytical solution of the model yields the transient behavior of the coupled fermion systems evolving to a final steady state, whereas the long-time behavior is determined by a power law rather than by exponential decay. Similar results are obtained for the entropy production which is proportional to the diffusion current.
Altru stisch ambtenaar of hero sch genie? Het gepropageerde beeld van provinciale en academische directeurs van bacteriologische laboratoria in Belgi (ca. 1900-1940)
Sofie Onghena
Studium : Tijdschrift voor Wetenschaps- en Universiteits-Geschiedenis , 2009,
Abstract: Altruistic public servant or heroic genius? The propagated image of provincial and academic directors of bacteriological laboratories in Belgium (ca. 1900-1940) At the end of the nineteenth century provincial bacteriological institutes were established in Belgium – in Liège, Mons, Namur and Brussels – in order to combat epidemics, to promote preventive medicine and to pursue the successful research of Louis Pasteur and Robert Koch. Similar laboratories existed at the universities of Ghent, Louvain and Brussels. The image building played an important role for both kinds of institutes, as bacteriology in pioneering phase had to be publicly confirmed as a new, valuable discipline. However, the directors of provincial and academic institutes – with the same academic training though – were awarded with different qualities at their jubilees, fitting with the purposes and the self-image of their respective institutions, either provincial authorities or universities. The image of academic directors was guided by academic decorum: Emile van Ermengem, Edmond Destrée and Joseph Denys were represented as savants, solely devoted to pure science and paternally educating young researchers, notwithstanding the fact that their laboratories had humanitarian merits as well. On the other hand, the discourse on the first provincial directors – Ernest Malvoz, Martin Herman, Achille Haibe – emphasized their altruistic commitment and their solid work for the provincial government. Jules Bordet, internationally rewarded scientist, professor and provincial director of the Pasteur Institute in Brussels, was celebrated with both sorts of discourses.
REVIEW: Cosmopolitanism: Ideals and Realities
Sofie Dreef
Amsterdam Law Forum , 2012,
Abstract: Book review of 'Cosmopolitanism: Ideals and Realities' by David Held.
Editorial
Sofie Dreef
Amsterdam Law Forum , 2011,
Abstract: The topic of Amsterdam Law Forum’s last thematic number is ‘Legal Perspectives on Gender and Sexual Equality’.
Editorial
Sofie Dreef
Amsterdam Law Forum , 2011,
Abstract:
Moral emotions as determinants of third-party punishment
Rob M. A. Nelissen,Marcel Zeelenberg
Judgment and Decision Making , 2009,
Abstract: Third-party punishment has recently received attention as an explanation for human altruism. Feelings of anger in response to norm violations are assumed to motivate third-party sanctions, yet there is only sparse and indirect support for this idea. We investigated the impact of both anger and guilt feelings on third-party sanctions. In two studies both emotions were independently manipulated. Results show that anger and guilt independently constitute sufficient but not necessary causes of punishment. Low levels of punishment are observed only when neither emotion is elicited. We discuss the implications of these findings for the functions of altruistic sanctions.
Current fluctuations in boundary driven diffusive systems in different dimensions: a numerical study
T. Becker,K. Nelissen,B. Cleuren
Physics , 2015, DOI: 10.1088/1367-2630/17/5/055023
Abstract: We use kinetic Monte Carlo simulations to investigate current fluctuations in boundary driven generalized exclusion processes, in different dimensions. Simulation results are in full agreement with predictions based on the additivity principle and the macroscopic fluctuation theory. The current statistics are independent of the shape of the contacts with the reservoirs, provided they are macroscopic in size. In general, the current distribution depends on the spatial dimension. For the special cases of the symmetric simple exclusion process and the zero-range process, the current statistics are the same for all spatial dimensions.
Illustration af fremtidens arealanvendelse til energiafgr der p landskabsskala i et GIS
Ann-Sofie Richardt
Geoforum Perspektiv , 2010,
Abstract:
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