Browsing Faculté de pharmacie – Travaux et publications by Issue Date
Now showing items 1-20 of 30
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Lubrication and wear protection of micro-structured hydrogels using bioinspired fluids
(American Chemical Society, 2018-11-21)We report the fabrication and the use of a bioinspired synovial fluid acting as a lubricant fluid and anti-wear agent at soft and porous chitosan hydrogel tribopairs. This synthetic synovial fluid is composed of sodium hyaluronate (HA) and a bottle-brush ... -
Biomimetic bottle-brush polymer coatings for fabrication of ultra-low fouling surfaces
(Wiley, 2018-11-13)The increasing demand for long lasting antifouling surfaces has steered the development of accessible, novel, biocompatible and environmentally-friendly materials. Inspired by lubricin (LUB), a component of mammalian synovial fluid with excellent ... -
Clinical importance of thrombocytopenia in patients with acute coronary syndromes : a systematic review and meta-analysis
Thrombocytopenia in acute coronary syndromes
(Taylor & Francis, 2018-10-22)Thrombocytopenia (TP) is common in hospitalized patients. In the context of acute coronary syndromes (ACS), TP has been linked to adverse clinical outcomes. We present a systematic review and meta-analysis of the evidence on the clinical importance of ... -
Effect of surface chemistry of polymeric nanoparticles on cutaneous penetration of cholecalciferol
(Elsevier, 2018-10-11)We investigated the influence of nanoparticle (NP) surface composition on different aspects of skin delivery of a lipophilic drug: chemical stability, release and skin penetration. Cholecalciferol was chosen as a labile model drug. Poly(lactic acid) ... -
Intermolecular interactions between Bottlebrush Polymers boost the protection of surfaces against frictional wear
(ACS Publications, 2018-05-30)Polymers exhibiting the bottlebrush (BB) architecture have excellent lubricating properties. However, to motivate their use in real life systems, they must also protect surfaces against frictional damage. In this article, we synthesized a library of ... -
Unified scaling of the structure and loading of nanoparticles formed via diffusion-limited coalescence
(American Chemical Society, 2018-04-30)The present study establishes the scaling laws describing the structure of spherical nanoparticles formed by diffusion-limited coalescence. We produced drug-loaded nanoparticles from a poly(ethylene glycol)-poly(d,l-lactic acid) diblock polymer (PEG-b-PLA) ... -
Quantification of peptides in human synovial fluid using liquid chromatography–tandem mass spectrometry
(Elsevier, 2018-04-06)A method to explore the stability of two anti-inflammatory peptides in human synovial fluid (HSF) has been developed and validated using liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS). The two peptides are BQ123 Cyclo(-D-Trp-D-A ... -
Preparedness for the next epidemic : health and political issues of an emerging paradigm
(Taylor & Francis, 2018-03-08)‘Preparing for the next epidemic’ has been a recurrent theme in global health in recent years. Starting with SARS, by way of the Avian influenza, and intensifying after the 2013–2016 Ebola outbreak, the urgency of preparing for the next health ... -
Bioinspired microstructures of chitosan hydrogel provide enhanced wear protection
(Royal Society of Chemistry, 2018-02-16)We describe the fabrication of physical chitosan hydrogels exhibiting a layered structure. This bilayered structure, as shown by SEM and confocal microscopy, is composed of a thin dense superficial zone (SZ), covering a deeper zone (DZ) containing ... -
Bile acid-based drug delivery systems for enhanced doxorubicin encapsulation: Comparing hydrophobic and ionic interactions in drug loading and release
(American Chemical Society, 2018-01-29)Doxorubicin (Dox) is a drug of choice in the design of drug delivery systems directed towards breast cancers, but is often limited by loading and control over its release from polymer micelles. Bile acid-based block copolymers present certain advantages ... -
Unraveling the correlations between conformation, lubrication, and chemical stability of bottlebrush polymers at interfaces
(American Chemical Society, 2017-09-29)In the present study, we monitored the conformation and chemical stability of a hydrophilic bottlebrush (BB) polymer in pure water and buffered saline solutions. We correlated these parameters to lubricating and wear protecting properties. Using the ... -
Non-covalent formulation of active principles with dendrimers: current state-of-the-art and prospects for further development
(Elsevier, 2017-09-06)During the last three decades, dendrimers, nano-sized highly-branched fractal-like symmetrical macromolecules, have been intensively studied as promising candidates for application as drug-delivery carriers. Among other important characteristics arising ... -
Interaction forces between pegylated star-shaped polymers at mica surfaces
(American Chemical Society, 2017-08-03)We present a study focused on characterizing the interaction forces between mica surfaces across solutions containing star-shaped polymers with cationic ends. Using the Surface Forces Apparatus, we show that the interaction forces in pure water between ... -
Release kinetics from nano-inclusion-based and affinity-based hydrogels: A comparative study
(Elsevier, 2017-06-15)In this study, we compare the release mechanisms from nanocomposite hydrogels. Liposomes made of different compositions of 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC) and 1,2-dihexadecanoyl-sn-glycero-3-phosphocholine (DPPC), nanogels made of ... -
Mechanistic insights into the directed assembly of hydrogel blocks mediated by polyelectrolytes or microgels
(2017-04-18)In this study, we report the directed assembly of hydrogel blocks mediated by electrostatic interactions. We compared two different assembly mechanisms, one mediated by microgel particles and another mediated by direct interaction between ... -
Wear protection without surface modification using a synergistic mixture of molecular brushes and linear polymers
(American Chemical Society, 2017-01-10)We describe the design of lubricating and wear protecting fluids based on mixtures of bottlebrushes (BB) and linear polymers solutions. To illustrate this concept we used hyaluronic acid (HA) - a naturally occurring linear polyelectrolyte, and a water ... -
Hydration forces at solid and fluid biointerfaces
(American Vacuum Society, 2016-01)We review the different molecular mechanisms giving rise to the repulsive hydration force between biologically relevant surfaces such as lipid bilayers and bio-ceramics. As we will show, the hydration force manifests itself in very different and ... -
Insiders, smart drugs et pharmaceuticalisation : éléments pour une typologie de la nouvelle déviance conformiste
(Département de sociologie de l’Université du Québec à Montréal & Athéna éditions, 2016)La multiplication des usagers et usagères des smart drugs sur les campus universitaires, des go-pills dans l’armée ou encore des coast-to-coast chez les camionneurs de longue distance invite à revisiter la légitimité croissante des « usages adaptatifs ... -
Effect of polymer architecture on Curcumin 1 encapsulation and release from PEGylated polymer nanoparticles: toward a drug delivery nano-platform to the CNS
(2015-10-01)We developed a nanoparticles (NPs) library from poly(ethylene glycol)–poly lactic acid comb-like polymers with variable amount of PEG. Curcumin was encapsulated in the NPs with a view to develop a delivery platform to treat diseases involving oxidative ... -
2D, 3D and 4D active compound delivery in tissue engineering and regenerative medicine
(2015-07-01)Recent advances in tissue engineering and regenerative medicine have shown that controlling cells microenvironment during growth is a key element to the development of successful therapeutic system. To achieve such control, researchers have first ...
