Publications by authors named "Helene Prunier"

Article Synopsis
  • The study investigates the active sites for oxygen (O) and hydrogen (H) adsorption on supported gold nanoparticles (NPs), a key challenge in heterogeneous catalysis.
  • Real-time observations using gas transmission electron microscopy reveal significant shape changes of gold NPs under O as they cool, while no changes occur under H, indicating different interactions.
  • A multiscale structure reconstruction model supports these findings, showing molecular adsorption of O occurs at specific facets of Au NPs at lower temperatures, while H proves to be less reactive, maintaining the NPs' stability.
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Introduction: An extrafine formulation of the long-acting muscarinic antagonist, glycopyrronium bromide (GB), has been developed for delivery via the NEXThaler dry powder inhaler (DPI). This study assessed the bronchodilator efficacy and safety of different doses of this formulation in patients with COPD to identify the optimal dose for further development.

Patients And Methods: This was a multicenter, randomized, double-blind, placebo-controlled, incomplete block, three-way crossover study, including three 28-day treatment periods, each separated by a 21-day washout period.

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Background: Evidence is scarce on the relative risk-benefit of inhaled triple therapy, consisting of inhaled corticosteroid, long-acting muscarinic antagonist, and long-acting β-agonist, versus dual bronchodilation for chronic obstructive pulmonary disease (COPD). We aimed to compare a single-inhaler triple combination of beclometasone dipropionate, formoterol fumarate, and glycopyrronium (BDP/FF/G) versus a single-inhaler dual bronchodilator combination of indacaterol plus glycopyrronium (IND/GLY) in terms of the rate of moderate-to-severe COPD exacerbations over 52 weeks of treatment.

Methods: This randomised, parallel-group, double-blind, double-dummy study was done at 187 sites across 17 countries.

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The active patient participation in clinical trials is key for a competitive clinical research. Given this, the Health Industry Physicians and Actors Association (AMIPS) has set up a working group to make communication recommendations towards patients. The group was made of patients, investigators and industry sponsors representatives.

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Gold-copper nanoparticles (Au-Cu NPs) were elaborated by both chemical (polyol reduction method) and physical (laser deposition) routes. The size, composition and crystal structure of these bimetallic nanoalloys were then characterized by aberration corrected transmission electron microscopy (TEM). Using a one-pot polyol method, Au-Cu nanocubes (NCs) with nominal compositions Au3Cu and AuCu3 were synthesized.

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The active patient participation in clinical trials is key for a competitive clinical research. Given this, the Health Industry Physicians and Actors Association (AMIPS) has set up a working group to make communication recommendations towards patients. The group was made of patients, investigators and industry sponsors representatives.

View Article and Find Full Text PDF