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3. Nocturnal gamma-hydroxybutyrate reduces cortisol awakening response and morning kyrunenine pathway metabolites in healthy volunteers

Author

Dornbierer, Dario A, Boxler, M, Voegel, C D, Stucky, Benjamin, Steuer, A E, Binz, T M, Baumgartner, M R, Baur, Diego M, Quednow, B B, Kraemer, T, Seifritz, E, Landolt, Hans-Peter, Bosch, O G, and University of Zurich

Subjects
2738 Psychiatry and Mental Health, 3004 Pharmacology, 10054 Clinic for Psychiatry, Psychotherapy, and Psychosomatics, 570 Life sciences, biology, 10050 Institute of Pharmacology and Toxicology, 2736 Pharmacology (medical), 610 Medicine & health, 10064 Neuroscience Center Zurich, 10218 Institute of Legal Medicine
Published
2019

4. Nocturnal Gamma-Hydroxybutyrate Reduces Cortisol-Awakening Response and Morning Kynurenine Pathway Metabolites in Healthy Volunteers

Author

Dornbierer, D A, primary, Boxler, M, additional, Voegel, C D, additional, Stucky, B, additional, Steuer, A E, additional, Binz, T M, additional, Baumgartner, M R, additional, Baur, D M, additional, Quednow, B B, additional, Kraemer, T, additional, Seifritz, E, additional, Landolt, H P, additional, and Bosch, O G, additional

Published
2019
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8. Comparison of the Structure of Polyelectrolyte Multilayer Films Exhibiting a Linear and an Exponential Growth Regime: An in Situ Atomic Force Microscopy Study

Author

Cuisinier, Frédéric, Lavalle, Ph., Gergely, C., Cuisinier, J., Decher, G., Schaaf, P., Voegel, C., Picart, C., Institut Charles Sadron (ICS), Université de Strasbourg (UNISTRA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), inconnu, and Inconnu

Subjects
3D optical data storage, Polymers and Plastics, Diffusion, [PHYS.PHYS.PHYS-BIO-PH]Physics [physics]/Physics [physics]/Biological Physics [physics.bio-ph], Organic Chemistry, Kinetics, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Polyelectrolyte, 0104 chemical sciences, Allylamine, Inorganic Chemistry, chemistry.chemical_compound, chemistry, Exponential growth, Chemical engineering, Polymer chemistry, Materials Chemistry, Self-assembly, 0210 nano-technology, Layer (electronics), ComputingMilieux_MISCELLANEOUS
Abstract

We report here on the structural characterization of polyelectrolytes multilayer films formed by poly(l-glutamic acid) and poly(l-lysine) (PGA/PLL). The growth of this system is compared to that of poly(styrenesulfonate)/poly(allylamine hydrochloride) (PSS/PAH) multilayers by means of in situ atomic force microscopy (AFM) and by optical waveguide lightmode spectroscopy (OWLS). In contrary to the (PSS/PAH)i films that are growing linearly with the number of deposited layer pairs i, optical data evidenced that the (PGA/PLL)i films are characterized by an exponential growth. The analysis of the structure of the (PSS/PAH)i films reveals a smooth featureless surface covered by small globules. On the other hand, (PGA/PLL)i films form extended structures that appear with a vermiculate pattern. We propose a new growth mechanism based on polyelectrolyte diffusion in and out of the film coupled to the formation of polyanion/polycation complexes at the surface of the film in order to explain the whole results.

Published
2002

9. Evaluation of microbial proliferation on cementitious materials exposed to biogas systems.

Author

Voegel C, Durban N, Bertron A, Landon Y, and Erable B

Subjects
Cell Proliferation, Surface Properties, Biofilms, Biofuels
Abstract

Understanding the interactions between biofilm and cementitious materials in biogas production systems is an essential step toward the development of durable concrete for this expanding sector. Although the action of the liquid phase medium on the material has been the subject of several research studies, the possible impact of the material's properties on biofilm formation and composition has been little investigated, if at all. The aim of this paper is to evaluate the characteristics of the biofilm according to the surface properties of the materials. Four cementitious materials with different chemical and mineralogical compositions, and various topological surface characteristics (pastes of CEM I, CEM III/C and CAC, and CEM I paste treated with oxalic acid) were exposed to the liquid phase of a fermenting biowaste for 10 weeks. The steps of biofilm formation were observed using SEM. Even though all the cementitious material surfaces were intensely colonized at the end of the experiments, the establishment of the biofilm seems to have been delayed on the oxalate-treated CEM I and on CAC coupons. Roughness and surface pH effects were not of prime importance for the biofilm development. The analysis of bacterial population diversity using 16S rDNA sequencing showed a less diversified microbial flora in the biofilm than in the reaction medium.

Published
2020
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