Search Results - "Balayssac, Stéphane"
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Chemometric Analysis of Low-field 1H NMR Spectra for Unveiling Adulteration of Slimming Dietary Supplements by Pharmaceutical Compounds
Published in Molecules (Basel, Switzerland) (06-03-2020)“…The recent introduction of compact or low-field (LF) NMR spectrometers that use permanent magnets, giving rise to proton (1H) NMR frequencies between 40 and 80…”
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Combining Two-Dimensional Diffusion-Ordered Nuclear Magnetic Resonance Spectroscopy, Imaging Desorption Electrospray Ionization Mass Spectrometry, and Direct Analysis in Real-Time Mass Spectrometry for the Integral Investigation of Counterfeit Pharmaceuticals
Published in Analytical chemistry (Washington) (15-06-2009)“…During the past decade, there has been a marked increase in the number of reported cases involving counterfeit medicines in developing and developed countries…”
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The tryptophan pathway and nicotinamide supplementation in ischaemic acute kidney injury
Published in Clinical kidney journal (01-12-2021)“…ABSTRACT Background Down-regulation of the enzymes involved in tryptophan-derived nicotinamide (NAM) adenine dinucleotide (NAD+) production was identified…”
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Paramagnetic Ions Provide Structural Restraints in Solid-State NMR of Proteins
Published in Journal of the American Chemical Society (28-02-2007)“…The number of structural restraints that can be obtained to solve 3D structures of proteins in the solid state (SS) is significantly lower than that in…”
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Exploiting mitochondrial dysfunction for effective elimination of imatinib-resistant leukemic cells
Published in PloS one (18-07-2011)“…Challenges today concern chronic myeloid leukemia (CML) patients resistant to imatinib. There is growing evidence that imatinib-resistant leukemic cells…”
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Comparative Chemical Profiling and Monacolins Quantification in Red Yeast Rice Dietary Supplements by 1H-NMR and UHPLC-DAD-MS
Published in Molecules (Basel, Switzerland) (13-01-2020)“…Red yeast rice dietary supplements (RYR DS) are largely sold in Western countries for their cholesterol-lowering/regulating effect due to monacolins, mainly…”
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NMR-Based Μetabolomics of the Lipid Fraction of Organic and Conventional Bovine Milk
Published in Molecules (Basel, Switzerland) (18-03-2019)“…Origin and quality identification in dairy products is an important issue and also an extremely challenging and complex experimental procedure. The objective…”
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Bubble functionalization in flotation process improve microalgae harvesting
Published in Chemical engineering journal (Lausanne, Switzerland : 1996) (15-01-2023)“…•Flotation is a promising but challenging method to harvest microalgae.•FluidFM offers original way to understand bubble-microalgae interaction.•Bubble…”
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Current trends and advances in analytical techniques for the characterization and quantification of biologically recalcitrant organic species in sludge and wastewater: A review
Published in Analytica chimica acta (01-04-2021)“…The study of organic matter in wastewater is a major regulatory and environmental issue and requires new developments to identify non-biodegradable refractory…”
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Benchtop NMR Coupled with Chemometrics: A Workflow for Unveiling Hidden Drug Ingredients in Honey-Based Supplements
Published in Molecules (Basel, Switzerland) (01-05-2024)“…Recently, benchtop nuclear magnetic resonance (NMR) spectrometers utilizing permanent magnets have emerged as versatile tools with applications across various…”
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Synthetic cannabinoids in e-liquids: A proton and fluorine NMR analysis from a conventional spectrometer to a compact one
Published in Forensic science international (01-07-2021)“…•NMR was applied to the analysis of e-liquids containing synthetic cannabinoids.•The 1H NMR profiles of 13 samples of e-liquids were obtained with HF and LF…”
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The POWER saga from 2007 to 2022: An example of a sexual enhancement dietary supplement tainted by different adulterants and still on the market
Published in Journal of pharmaceutical and biomedical analysis (01-04-2023)“…Ten POWER dietary supplements, chronologically called tabs, pills then caps, and advertised as 100% natural aphrodisiacs, were analyzed by 1H NMR from 2007 to…”
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Encapsulation of photosensitizer worsen cell responses after photodynamic therapy protocol and polymer micelles act as biomodulators on their own
Published in International journal of pharmaceutics (30-09-2024)“…[Display omitted] •Polymer micelles increase the amount of photosensitizer delivered to cells.•Encapsulation of photosensitizer accentuates cellular…”
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Characterization of fatty acid forms using benchtop NMR in omega-3 oil supplements
Published in Magnetic resonance in chemistry (01-05-2024)“…Omega-3 fatty acid supplements, such as fish oil and plant-based oils, have gained popularity because of their potential health benefits. However, the quality…”
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Screening of “spice” herbal mixtures: From high-field to low-field proton NMR
Published in Forensic science international (01-10-2017)“…[Display omitted] •Both high- and low-field NMR were used for the screening of 41 spice herbal mixtures.•Low-field NMR allows the detection of synthetic…”
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Separation of unsaturated C18 fatty acids using perfluorinated‐micellar electrokinetic chromatography: I. Optimization and separation process
Published in Electrophoresis (01-02-2023)“…Ammonium perfluorooctanoate (APFOA) was used as a surfactant for the separation of free unsaturated C18 fatty acids by micellar electrokinetic chromatography…”
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Glucose metabolism and NRF2 coordinate the antioxidant response in melanoma resistant to MAPK inhibitors
Published in Cell death & disease (27-02-2018)“…Targeted therapies as BRAF and MEK inhibitor combination have been approved as first-line treatment for BRAF-mutant melanoma. However, disease progression…”
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Enzymatic hydrolysis of rapeseed oil with a non-GMO lipase: A strategy to substitute mono- and diglycerides of fatty acids and improve the softness of sponge cakes
Published in Food science & technology (01-02-2021)“…Mono- and diglycerides of fatty acids (MDGs) are commonly used in the production of sponge cakes due to their ability to form inclusion complexes with amylose,…”
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Proton NMR for detection, identification and quantification of adulterants in 160 herbal food supplements marketed for weight loss
Published in Journal of pharmaceutical and biomedical analysis (30-05-2016)“…[Display omitted] •1H NMR analysis of 160 “100% natural” weight loss food supplements.•56% were tainted with 6 active pharmaceutical ingredients.•Sibutramine,…”
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Paramagnetic shifts in solid-state NMR of proteins to elicit structural information
Published in Proceedings of the National Academy of Sciences - PNAS (11-11-2008)“…The recent observation of pseudocontact shifts (pcs) in ¹³C high-resolution solid-state NMR of paramagnetic proteins opens the way to their application as…”
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