132 research outputs found

    Three Generations of Participation Rights in European Administrative Proceedings

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    This paper develops a conceptual framework for analyzing the development of participation rights in Community administration from the early 1970\u27s to the present day. Procedural rights can be divided into three categories, each of which is associated with a distinct phase in Community history and a particular set of institutional actors. The first set of rights, the right to a fair hearing when the Commission inflicts sanctions or other forms of hardship on individuals, first emerged in the 1970\u27s in the context of competition proceedings and later in areas such as anti-dumping and structural funds. This phase was driven by the Court of Justice and an English, and to a lesser extent, German conception of the value of a fair hearing. The rise of transparency in the 1990\u27s-- the requirement of openness in all Community institutions, including administration--marks the second stage. The drive for transparency was led by certain member countries with longstanding traditions of open government--the Netherlands, Denmark, and Sweden--as well as the European Parliament. The most recent phase in the development of process rights is the debate on whether and under what conditions, individuals, firms, and their associations, billed civil society, should take part in Community legislative and rulemaking proceedings. The Commission and now the Convention on the Future of Europe have been the keenest proponents of giving citizens and their associations a right to participate in rulemaking and legislative proceedings. Civil society participation is then critically examined. Representation--not expertise or good management practices--is the only justification for allocating power, within the Community policymaking process, to individual citizens and their organizations. Yet there is no consensus in Europe, where republican, corporatist, and liberal traditions continue to flourish, on the legitimacy of representation outside of political parties and the electoral process. Without wider consensus, I conclude that associational participation in Community policymaking should not be entrenched and that the Commission should, in mediating the informal influence of civil society actors, act in awareness of its innate institutional bias toward liberal interest group pluralism

    Nano toolbox in immune modulation and nanovaccines.

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    Despite the great success of vaccines over two centuries, the conventional strategy is based on attenuated/altered microorganisms. However, this is not effective for all microbes and often fails to elicit a protective immune response, and sometimes poses unexpected safety risks. The expanding nano toolbox may overcome some of the roadblocks in vaccine development given the plethora of unique nanoparticle (NP)-based platforms that can successfully induce specific immune responses leading to exciting and novel solutions. Nanovaccines necessitate a thorough understanding of the immunostimulatory effect of these nanotools. We present a comprehensive description of strategies in which nanotools have been used to elicit an immune response and provide a perspective on how nanotechnology can lead to future personalized nanovaccines

    A Compensatory Liability Regime to Promote the Exchange of Microbial Genetic Resources for Research and Benefit Sharing

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    Female rhesus macaques were immunized with HIV virus-like particles (HIV-VLPs) or HIV DNA administered as sequential combinations of mucosal (intranasal) and systemic (intramuscular) routes, according to homologous or heterologous prime-boost schedules. The results show that in rhesus macaques only the sequential intranasal and intramuscular administration of HIV-VLPs, and not the intranasal alone, is able to elicit humoral immune response at the systemic as well as the vaginal level.funding agencies|Simian Vaccine Evaluation Unit (SVEU) of the Division of AIDS||European Community|201433|</p

    Immune Responses but No Protection against SHIV by Gene-Gun Delivery of HIV-1 DNA Followed by Recombinant Subunit Protein Boosts

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    AbstractThe efficacy of combining immunization with human immunodeficiency vitus type 1 (HIV-1) DNA and HIV-1 recombinant proteins to obtain protection from chimeric simian/human immunodeficiency virus (SHIV) was determined. Four cynomolgus monkeys received four gene-gun immunizations intraepidermally of plasmid DNA encoding HIV-1laienv(gp160),gag, tat, nef,andrevproteins. Ten micrograms of DNA was used per immunization. The animals were boosted twice intramuscularly with 50 μg of HIV-1laiEnv (MicroGeneSys), Gag, Tat, Nef, and Rev recombinant proteins mixed in Ribi adjuvant. The antibody responses were amplified following the administration of the recombinant subunit boosts. One month after the final subunit immunization, the vaccinated animals together with four control animals were challenged intravenously with 10 monkey infectious doses of SHIV that expresses theenv, tatandrevgenes of HIV-1 and gag and nef from SIV. However, only low titers of neutralizing antibodies were present at the day of challenge. The consecutive HIV-1 DNA and recombinant protein immunizations induced B- and T-cell responses but not protection against SHIV replication nor reduction of the viral load

    Dissecting multi drug resistance in head and neck cancer cells using multicellular tumor spheroids

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    Funder: MIIC PDF and MIIC seeding grantFunder: The Swedish Cancer Society (2017/301), the County Council of Östergötland, and the Research Funds of Linköping University HospitalAbstract: One of the hallmarks of cancers is their ability to develop resistance against therapeutic agents. Therefore, developing effective in vitro strategies to identify drug resistance remains of paramount importance for successful treatment. One of the ways cancer cells achieve drug resistance is through the expression of efflux pumps that actively pump drugs out of the cells. To date, several studies have investigated the potential of using 3-dimensional (3D) multicellular tumor spheroids (MCSs) to assess drug resistance; however, a unified system that uses MCSs to differentiate between multi drug resistance (MDR) and non-MDR cells does not yet exist. In the present report we describe MCSs obtained from post-diagnosed, pre-treated patient-derived (PTPD) cell lines from head and neck squamous cancer cells (HNSCC) that often develop resistance to therapy. We employed an integrated approach combining response to clinical drugs and screening cytotoxicity, monitoring real-time drug uptake, and assessing transporter activity using flow cytometry in the presence and absence of their respective specific inhibitors. The report shows a comparative response to MDR, drug efflux capability and reactive oxygen species (ROS) activity to assess the resistance profile of PTPD MCSs and two-dimensional (2D) monolayer cultures of the same set of cell lines. We show that MCSs provide a robust and reliable in vitro model to evaluate clinical relevance. Our proposed strategy can also be clinically applicable for profiling drug resistance in cancers with unknown resistance profiles, which consequently can indicate benefit from downstream therapy

    Immunization with HIV protease peptides linked to syngeneic erythrocytes

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    New potent vaccine adjuvants are desirable for increasing the efficacy of novel vaccine modalities such as DNA and peptides. We therefore tested if syngeneic erythrocytes could serve as delivery vectors for selected HIV peptides and compared the potency of these constructs to immunization with peptides in phosphate buffered saline or in incomplete Freunds adjuvant. Immunization of mice with peptides in a low dose (5 ng) coupled to erythrocytes induced a weak immune response in mice. These peptides alone (5 μg) gave no immune responses, while formulating the peptides (50 μg) in IFA induced strong homologous immunity as well as prominent cross reactivity to a related mutant epitope. Thus, vaccine delivery using syngeneic erythrocytes, although attractive for clinical use, might be of limited value due to the low amount of antigen that can be loaded per erythrocyte

    Accounting Problems Under the Excess Profits Tax

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    DNA vaccines based on subunits from pathogens have several advantages over other vaccine strategies. DNA vaccines can easily be modified, they show good safety profiles, are stable and inexpensive to produce, and the immune response can be focused to the antigen of interest. However, the immunogenicity of DNA vaccines which is generally quite low needs to be improved. Electroporation and co-delivery of genetically encoded immune adjuvants are two strategies aiming at increasing the efficacy of DNA vaccines. Here, we have examined whether targeting to antigen-presenting cells (APC) could increase the immune response to surface envelope glycoprotein (Env) gp120 from Human Immunodeficiency Virus type 1 (HIV- 1). To target APC, we utilized a homodimeric vaccine format denoted vaccibody, which enables covalent fusion of gp120 to molecules that can target APC. Two molecules were tested for their efficiency as targeting units: the antibody-derived single chain Fragment variable (scFv) specific for the major histocompatilibility complex (MHC) class II I-E molecules, and the CC chemokine ligand 3 (CCL3). The vaccines were delivered as DNA into muscle of mice with or without electroporation. Targeting of gp120 to MHC class II molecules induced antibodies that neutralized HIV-1 and that persisted for more than a year after one single immunization with electroporation. Targeting by CCL3 significantly increased the number of HIV-1 gp120-reactive CD8(+) T cells compared to non-targeted vaccines and gp120 delivered alone in the absence of electroporation. The data suggest that chemokines are promising molecular adjuvants because small amounts can attract immune cells and promote immune responses without advanced equipment such as electroporation.Funding Agencies|Research Council of Norway; Odd Fellow</p
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