A5061732307- Bacterial biofilms and quorum sensing
- Antimicrobial Peptides and Activities
- Polymer Surface Interaction Studies
- Biochemical and Structural Characterization
- Spectroscopy Techniques in Biomedical and Chemical Research
- Spectroscopy and Quantum Chemical Studies
- Bone Tissue Engineering Materials
- Force Microscopy Techniques and Applications
- Diatoms and Algae Research
- Probiotics and Fermented Foods
- Bacteriophages and microbial interactions
- Lipid Membrane Structure and Behavior
- Advanced Chemical Sensor Technologies
- Quantum Dots Synthesis And Properties
- Radioactive element chemistry and processing
- Polysaccharides and Plant Cell Walls
- Molecular spectroscopy and chirality
- Periodontal Regeneration and Treatments
- Microbial Metabolites in Food Biotechnology
- Molecular Junctions and Nanostructures
- Microbial Inactivation Methods
- Oral microbiology and periodontitis research
- Coffee research and impacts
- Enzyme-mediated dye degradation
- Fermentation and Sensory Analysis
Université de Lorraine
2012-2024
Laboratoire de Chimie Physique et Microbiologie pour l'Environnement
2015-2024
Centre National de la Recherche Scientifique
2010-2024
Laboratoire de Chimie-Physique Macromoléculaire
2023
Centre Inria de l'Université de Lorraine
2017
This study reports on the development of thermoresponsive core/shell magnetic nanoparticles (MNPs) based an iron oxide core and a copolymer shell composed 2-(2-methoxy)ethyl methacrylate (MEO2MA) oligo(ethylene glycol)methacrylate (OEGMA) moieties. These smart nano-objects combine properties drug carrier polymeric shell. Loading anticancer doxorubicin (DOX) in MNPs via supramolecular interactions provides advanced features to delivery DOX with spatial temporal controls. The so coated exhibit...
Drinking water quality management requires early warning tools which enable supply companies to detect quickly and forecast degradation of the microbial drinking during its transport throughout distribution systems. This study evaluated feasibility assessing, in real time, biostability by monitoring situ evolution attenuated total reflectance-Fourier transform infrared (ATR-FTIR) fingerprint a nascent reference biofilm exposed being tested. For this purpose, responses Pseudomonas fluorescens...
In the field of actinide aqueous chemistry, this work aims to resolve some controversy about uranyl(VI) hydroxide species present in basic solutions. We revisit Raman, IR, and UV-visible spectra with two new approaches. First, IR UV data were recorded systematically from solutions noncomplexing electrolyte (C(2)H(5))(4)NNO(3) at 25 °C 0.1 MPa ([U(total)] = 0.005-0.105 M) H(2)O D(2)O over a wide range -log mH(D)(+) between 2.92 14.50. Second, vibrational (IR Raman) analyzed using Bayesian...
Caspofungin is an echinocandin antifungal that inhibits glucan synthesis in the fungal cell wall. A Candida parapsilosis bloodstream isolate resistant to echinocandins was recovered from a patient who had undergone allogeneic hematopoietic stem transplantation. The FKS1 gene, encoding target synthase, contained heterozygous mutation resulting I1380T amino acid change, addition naturally occurring P660A polymorphism. When expressed at equivalent position Fks1p protein of C. lusitaniae, P642A...
Infrared and Raman spectra of CH3COOD CD3COOD were obtained below 1900 cm−1, from dilute solutions in heavy water up to neat liquids. The relation the intermolecular interactions with acid concentration is discussed. In debate concerning structure pure liquid acetic at room temperature, we favour assignment major species centrosymmetric dimer. This based not only on literature data for crystal, vapour acid, but also infrared propanoic acids their 0.1 M water. On increasing solutions,...
The field of regenerative medicine has recently seen an emerging trend toward decellularized extracellular matrix (ECM) as a biological scaffold for stem cell-delivery. Human umbilical cord represents valuable opportunity from both technical and ethical point view to obtain allogenic ECM. Herein, we established protocol, allowing the full removal cell membranes nuclei moieties Wharton's jelly (WJ) tissue. No alterations in ECM components (i.e., collagen, GAG content, growth factors),...
Abstract The rise of antimicrobial resistant microorganisms constitutes an increasingly serious threat to global public health. As a consequence, the efficacy conventional antimicrobials is rapidly declining, threatening ability healthcare professionals cure common infections. Over last two decades host defense peptides have been identified as attractive source new antimicrobials. In present study, we characterized antibacterial and mechanistic properties D-Cateslytin (D-Ctl), epipeptide...
Despite lignin being a key component of wood, the dynamics tracheid lignification are generally overlooked in xylogenesis studies, which hampers our understanding environmental drivers and blurs interpretation isotopic anatomical signals stored tree rings. Here, we analyzed cell wall formation silver fir (Abies alba Mill.) tracheids to determine if lags behind secondary deposition. For this purpose, applied multimodal imaging approach combining transmitted light microscopy (TLM), confocal...
The vibrational spectra of CH3COOH, CH3COOD, CD3COOH and CD3COOD, either monomeric or in two dimeric structures (centrosymmetric side-on linear, with bent hydrogen bonds), were studied by ab initio calculations at the DFT/B3LYP/6-31++G** level. force field, potential energy distribution derivatives electric dipole moment respect to internal coordinates analysed addition vibration wavenumbers. A comprehensive discussion infrared intensities between 1150 1500 cm−1 is made for twelve studied....
The objectives of this investigation were to improve our understanding organic acid transport in porous media by focusing on a model system involving phthalic and goethite-coated sand (GCS). This was specifically made first recalibrating molecularly sound phthalate surface complexation GCS then applying describe breakthrough curves (BTC) packed column. ATR-FTIR spectra adsorbed at goethite surfaces pH 3.0 6.0 loadings from 2.0 40.8 μmol/m(2) confirmed the coexistence metal-bonded (MB)...
Glycogen is mainly found as the principal storage form of glucose in cells. Many bacteria are able to synthesize large amounts glycogen under unfavorable life conditions. By combining infrared spectroscopy, single molecule force spectroscopy (SMFS) and immuno-staining technique, we evidenced that planktonic P. fluorescens (Pf) cells also produce an extracellular polymeric substance. For this purpose, Pf suspensions were examined at 3 21 h growth nutritive medium (LB, 0.5 g/L). The...
Extracellular polymeric substances (EPS) play an important role in biofilm cohesion and adhesion to surfaces. EPS of a P. fluorescens were characterized through their vibrational spectra (infrared Raman) conformational properties using single molecule force spectroscopy with specific probes for glucose, galactose, N-acetyl glucosamine-rich EPS. Vibrational evidenced the overproduction glycogen other carbohydrates biofilm. The analysis was performed from both freely jointed chain (FJC) worm...
AFM was combined to vibrational spectroscopy decipher morphological, mechanical and biochemical changes induced by caspofungin treatment on<italic>Candida</italic>.