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Castel R, Tassistro V, Lebarillier S, Dupuy N, Noack Y, Orsière T, Malleret L. Chemical and genotoxic characterization of bioaccessible fractions as a comprehensive in vitro tool in assessing the health risk due to dust-bound contaminant ingestion. Environ Sci Pollut Res Int 2024:10.1007/s11356-024-33248-3. [PMID: 38691285 DOI: 10.1007/s11356-024-33248-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Accepted: 04/04/2024] [Indexed: 05/03/2024]
Abstract
In the last two decades, awareness grew on the matter of the impact of environment on human health. Contaminants sorbed onto soil and settled dust can be ingested and thus represent a hazard, particularly to young children, who play on the ground and bring their hands and objects to their mouth. Metal(loid)s and polycyclic aromatic hydrocarbons (PAHs) are of concern as they are both carcinogenic to humans and ubiquitous in outdoor environments. The present study aims to assess the total and bioaccessible fractions of PAHs and metal(loid)s present in settled dust of four preschools located in industrial, urban, and suburban areas. On the one hand, children's incremental life cancer risks (ILCR) were calculated according to ingestion pathway. On the other hand, the genotoxicities of the bioaccessible dust-bonded contaminants were determined on gastric cells. PAH concentrations ranged from 50.9 to 2267.3 ng/g, and the bioaccessible fraction represented 10.7% of the total in average. Metal(loid) concentration ranged from 12,430 to 38,941 µg/g, and the mean bioaccessibility was of 40.1%. Cancer risk ranged from 2.8.105 to 8.6.105, indicating that there is a potential cancer risk for children linked to the ingestion of settled dust. The inorganic bioaccessible fraction induced little DNA (< 20%TailDNA) and chromosomal damages (30% increase in micronuclei), whereas the organic bioaccessible fraction induced higher DNA (17-63%TailDNA) and chromosomal damages (88% increase in micronuclei). Such experimental approach needs to be deepen, as a tool complementary to cancer risk calculation, since the latter only lays on a set of targeted contaminants with known toxicity values.
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Affiliation(s)
- Rebecca Castel
- Laboratoire Chimie Environnement, Aix Marseille University, CNRS, Marseille, France
- IMBE, Aix Marseille University, CNRS, IRD, AU, Marseille, France
| | | | | | - Nathalie Dupuy
- IMBE, Aix Marseille University, CNRS, IRD, AU, Marseille, France
| | - Yves Noack
- CEREGE, Aix Marseille University, CNRS, IRD, INRAE, Aix-en-Provence, France
| | - Thierry Orsière
- IMBE, Aix Marseille University, CNRS, IRD, AU, Marseille, France
| | - Laure Malleret
- Laboratoire Chimie Environnement, Aix Marseille University, CNRS, Marseille, France.
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2
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Leon S, Simon V, Lee TH, Steuernagel L, Clark S, Biglari N, Lesté-Lasserre T, Dupuy N, Cannich A, Bellocchio L, Zizzari P, Allard C, Gonzales D, Le Feuvre Y, Lhuillier E, Brochard A, Nicolas JC, Teillon J, Nikolski M, Marsicano G, Fioramonti X, Brüning JC, Cota D, Quarta C. Single cell tracing of Pomc neurons reveals recruitment of 'Ghost' subtypes with atypical identity in a mouse model of obesity. Nat Commun 2024; 15:3443. [PMID: 38658557 PMCID: PMC11043070 DOI: 10.1038/s41467-024-47877-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Accepted: 04/09/2024] [Indexed: 04/26/2024] Open
Abstract
The hypothalamus contains a remarkable diversity of neurons that orchestrate behavioural and metabolic outputs in a highly plastic manner. Neuronal diversity is key to enabling hypothalamic functions and, according to the neuroscience dogma, it is predetermined during embryonic life. Here, by combining lineage tracing of hypothalamic pro-opiomelanocortin (Pomc) neurons with single-cell profiling approaches in adult male mice, we uncovered subpopulations of 'Ghost' neurons endowed with atypical molecular and functional identity. Compared to 'classical' Pomc neurons, Ghost neurons exhibit negligible Pomc expression and are 'invisible' to available neuroanatomical approaches and promoter-based reporter mice for studying Pomc biology. Ghost neuron numbers augment in diet-induced obese mice, independent of neurogenesis or cell death, but weight loss can reverse this shift. Our work challenges the notion of fixed, developmentally programmed neuronal identities in the mature hypothalamus and highlight the ability of specialised neurons to reversibly adapt their functional identity to adult-onset obesogenic stimuli.
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Affiliation(s)
- Stéphane Leon
- University of Bordeaux, INSERM, Neurocentre Magendie, U1215, F-33000, Bordeaux, France
| | - Vincent Simon
- University of Bordeaux, INSERM, Neurocentre Magendie, U1215, F-33000, Bordeaux, France
| | - Thomas H Lee
- University of Bordeaux, INSERM, Neurocentre Magendie, U1215, F-33000, Bordeaux, France
| | - Lukas Steuernagel
- Department of Neuronal Control of Metabolism, Max Planck Institute for Metabolism Research, Cologne, Germany
| | - Samantha Clark
- University of Bordeaux, INSERM, Neurocentre Magendie, U1215, F-33000, Bordeaux, France
| | - Nasim Biglari
- Department of Neuronal Control of Metabolism, Max Planck Institute for Metabolism Research, Cologne, Germany
| | | | - Nathalie Dupuy
- University of Bordeaux, INSERM, Neurocentre Magendie, U1215, F-33000, Bordeaux, France
| | - Astrid Cannich
- University of Bordeaux, INSERM, Neurocentre Magendie, U1215, F-33000, Bordeaux, France
| | - Luigi Bellocchio
- University of Bordeaux, INSERM, Neurocentre Magendie, U1215, F-33000, Bordeaux, France
| | - Philippe Zizzari
- University of Bordeaux, INSERM, Neurocentre Magendie, U1215, F-33000, Bordeaux, France
| | - Camille Allard
- University of Bordeaux, INSERM, Neurocentre Magendie, U1215, F-33000, Bordeaux, France
| | - Delphine Gonzales
- University of Bordeaux, INSERM, Neurocentre Magendie, U1215, F-33000, Bordeaux, France
| | - Yves Le Feuvre
- University of Bordeaux, INSERM, Neurocentre Magendie, U1215, F-33000, Bordeaux, France
| | - Emeline Lhuillier
- University of Toulouse III Paul Sabatier, INSERM, Institut des Maladies Métaboliques et Cardiovasculaires, U1297, 31400, France; GeT-Santé, Plateforme Génome et Transcriptome, GenoToul, Toulouse, France
| | - Alexandre Brochard
- University of Bordeaux, INSERM, Neurocentre Magendie, U1215, F-33000, Bordeaux, France
| | - Jean Charles Nicolas
- University of Bordeaux, INSERM, Neurocentre Magendie, U1215, F-33000, Bordeaux, France
| | - Jérémie Teillon
- University of Bordeaux, CNRS, INSERM, BIC, US4, UAR 3420, F-33000, Bordeaux, France
| | - Macha Nikolski
- University of Bordeaux, Bordeaux Bioinformatics Center, Bordeaux, France
- University of Bordeaux, CNRS, IBGC UMR 5095, Bordeaux, France
| | - Giovanni Marsicano
- University of Bordeaux, INSERM, Neurocentre Magendie, U1215, F-33000, Bordeaux, France
| | - Xavier Fioramonti
- University of Bordeaux, INRAE, Bordeaux INP, NutriNeuro, UMR 1286, F-33000, Bordeaux, France
| | - Jens C Brüning
- Department of Neuronal Control of Metabolism, Max Planck Institute for Metabolism Research, Cologne, Germany
- Center for Endocrinology, Diabetes and Preventive Medicine (CEDP), University Hospital Cologne, Cologne, Germany
- Excellence Cluster on Cellular Stress Responses in Aging Associated Diseases (CECAD) University of Cologne, Cologne, Germany
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany
- National Center for Diabetes Research (DZD), Neuherberg, Germany
| | - Daniela Cota
- University of Bordeaux, INSERM, Neurocentre Magendie, U1215, F-33000, Bordeaux, France
| | - Carmelo Quarta
- University of Bordeaux, INSERM, Neurocentre Magendie, U1215, F-33000, Bordeaux, France.
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Hamrouni R, Regus F, Claeys-Bruno M, Farnet Da Silva AM, Orsière T, Laffont-Schwob I, Boudenne JL, Dupuy N. Statistical Experimental Design as a New Approach to Optimize a Solid-State Fermentation Substrate for the Production of Spores and Bioactive Compounds from Trichoderma asperellum. J Fungi (Basel) 2023; 9:1123. [PMID: 37998928 PMCID: PMC10672489 DOI: 10.3390/jof9111123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 11/12/2023] [Accepted: 11/13/2023] [Indexed: 11/25/2023] Open
Abstract
Managing organic agricultural wastes is a challenge in today's modern agriculture, where the production of different agricultural goods leads to the generation of large amounts of waste, for example, olive pomace and vine shoot in Mediterranean Europe. The discovery of a cost-effective and environment-friendly way to valorize such types of waste in Mediterranean Europe is encouraged by the European Union regulation. As an opportunity, organic agricultural waste could be used as culture media for solid-state fermentation (SSF) for fungal strains. This methodology represents a great opportunity to produce secondary metabolites like 6-pentyl-alpha-pyrone (6-PP), a lactone compound with antifungal properties against phytopathogens, produced by Trichoderma spp. Therefore, to reach adequate yields of 6-PP, lytic enzymes, and spores, optimization using specific agricultural cheap local wastes from Southeastern France is in order. The present study was designed to show the applicability of an experimental admixture design to find the optimal formulation that favors the production of 6-PP. To conclude, the optimized formulation of 6-PP production by Trichoderma under SSF contains 18% wheat bran, 23% potato flakes, 20% olive pomace, 14% olive oil, 24% oatmeal, and 40% vine shoots.
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Affiliation(s)
- Rayhane Hamrouni
- CNRS, IRD, IMBE, Avignon Université, Aix Marseille University, 13013 Marseille, France; (F.R.); (M.C.-B.); (A.-M.F.D.S.); (T.O.)
| | - Flor Regus
- CNRS, IRD, IMBE, Avignon Université, Aix Marseille University, 13013 Marseille, France; (F.R.); (M.C.-B.); (A.-M.F.D.S.); (T.O.)
- IRD, LPED, UMR 151, Aix Marseille University, 13331 Marseille, France;
| | - Magalie Claeys-Bruno
- CNRS, IRD, IMBE, Avignon Université, Aix Marseille University, 13013 Marseille, France; (F.R.); (M.C.-B.); (A.-M.F.D.S.); (T.O.)
| | - Anne-Marie Farnet Da Silva
- CNRS, IRD, IMBE, Avignon Université, Aix Marseille University, 13013 Marseille, France; (F.R.); (M.C.-B.); (A.-M.F.D.S.); (T.O.)
| | - Thierry Orsière
- CNRS, IRD, IMBE, Avignon Université, Aix Marseille University, 13013 Marseille, France; (F.R.); (M.C.-B.); (A.-M.F.D.S.); (T.O.)
| | | | | | - Nathalie Dupuy
- CNRS, IRD, IMBE, Avignon Université, Aix Marseille University, 13013 Marseille, France; (F.R.); (M.C.-B.); (A.-M.F.D.S.); (T.O.)
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Girard-Perier N, Marque SRA, Dupuy N, Krieguer B, Dorey S. Gamma, E-Beam and X-ray Irradiations on PE/EVOH/PE Multilayer Film: An Industrial Point of View Regarding the Impact on Mechanical Properties. Polymers (Basel) 2023; 15:2799. [PMID: 37447445 DOI: 10.3390/polym15132799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 05/31/2023] [Accepted: 06/16/2023] [Indexed: 07/15/2023] Open
Abstract
X-ray and electron-beam (E-beam) sterilization technologies were assessed to supplement gamma sterilization, the most common radiation technology used today for biopharmaceutical product sterilization. The mechanical properties of a PE/EVOH/PE film were studied using tensile tests and dynamical mechanical analysis after each irradiation technology (i.e., gamma, electron beam and X-ray irradiations). The effects of each irradiation were compared using two statistical methods. The results indicate that the three irradiation technologies induce no difference in mechanical properties in the investigated dose range for this material.
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Affiliation(s)
- Nina Girard-Perier
- Sartorius Stedim FMT S.A.S, Z.I. Les Paluds, Avenue de Jouques CS91051, CEDEX, 13781 Aubagne, France
| | | | - Nathalie Dupuy
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, 13013 Marseille, France
| | - Blanche Krieguer
- Sartorius Stedim FMT S.A.S, Z.I. Les Paluds, Avenue de Jouques CS91051, CEDEX, 13781 Aubagne, France
- Aix Marseille Univ, CNRS, ICR, Case 551, 13397 Marseille, France
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, 13013 Marseille, France
| | - Samuel Dorey
- Sartorius Stedim FMT S.A.S, Z.I. Les Paluds, Avenue de Jouques CS91051, CEDEX, 13781 Aubagne, France
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Villette CC, Brightman F, Dupuy N, Zimmermann A, Lignet F, Zenke FT, Terranova N, Bolleddula J, Bawab SE, Chassagnole C. Abstract 5699: Development and validation of a quantitative systems pharmacology model for prediction of preclinical efficacy of PARP inhibitors rucaparib and talazoparib combined with the ATR inhibitor gartisertib (M4344). Cancer Res 2023. [DOI: 10.1158/1538-7445.am2023-5699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Abstract
Abstract
Introduction: Poly (ADP-ribose) polymerase (PARP) and ataxia telangiectasia and Rad3-related (ATR) inhibitors target key DNA damage response (DDR) kinases. PARP inhibitors (PARPi) suppress the catalytic activity of PARP and trap PARP in a complex with damaged DNA, resulting in the accumulation of unrepaired single-strand breaks (SSBs) and stalled replication forks. Loss of ATR activity blocks cell cycle arrest induced by single-stranded DNA and sensitizes cancer cells to agents that induce DNA replication stress. Thus, PARP inhibition synergizes (through synthetic lethality) with concurrent ATR inhibition by inducing replication fork collapse, double-strand breaks (DSBs), and PARP-DNA complex formation, with simultaneous loss of intra-S and G2/M checkpoints and suppression of DNA-damage repair, leading to mitotic catastrophe. Four PARPi are currently approved for the treatment of various cancers and several ATR inhibitors (ATRi) are in clinical trials either as monotherapies or in combination with other chemotherapeutic agents. We developed and validated a semi-mechanistic quantitative systems pharmacology (QSP) model that represents the mechanisms of action of PARPi and ATRi with minimal parameters, which could be used to inform the optimization of combination regimens.
Methods: A QSP model of a growing cancer cell population was developed by considering SSBs and DSBs, and parallel DNA repair pathways relying on PARP and ATR. PARPi and ATRi mediated saturable inhibitory effects on their respective DDR pathways, while PARP-DNA trapping was represented as an increased conversion rate from SSBs to DSBs. Phenotypic impairments of the DDR such as BRCA mutations were embedded as DDR pathway deficiencies. The model was calibrated using experimental data derived from rucaparib and talazoparib combination studies with gartisertib.
Results: The calibrated model captured well the tumor-growth inhibition observed in the HBCx9 PDX model for rucaparib and gartisertib, either alone or in combination, over average daily doses ranging from 50 mg/kg to 200 mg/kg (QD/BID) of rucaparib and 1-3 mg/kg (QD/BIW/QD alternate weeks) of gartisertib. The model was also able to predict the wide range of responses (from shrinkage to progressive disease) observed in a panel of triple-negative breast cancer PDX models (BRCA-mutant and wild type) treated with talazoparib and gartisertib in combination. The complete DDR model utilized 9 variable parameters, and the mechanisms of action of PARP and ATR inhibition were described by 4 parameters each.
Conclusion: This newly developed QSP model provides a framework that can be applied to optimize the dosing regimens of PARP and ATR inhibitor combinations and help with clinical dosing strategy.
Citation Format: Claire C. Villette, Frances Brightman, Nathalie Dupuy, Astrid Zimmermann, Florianne Lignet, Frank T. Zenke, Nadia Terranova, Jayaprakasam Bolleddula, Samer El Bawab, Christophe Chassagnole. Development and validation of a quantitative systems pharmacology model for prediction of preclinical efficacy of PARP inhibitors rucaparib and talazoparib combined with the ATR inhibitor gartisertib (M4344). [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2023; Part 1 (Regular and Invited Abstracts); 2023 Apr 14-19; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2023;83(7_Suppl):Abstract nr 5699.
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Affiliation(s)
| | | | | | | | | | | | - Nadia Terranova
- 4Merck Institute of Pharmacometrics an affiliate of Merck KGaA, Darmstadt, Germany
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Regus F, Laffont-Schwob I, Hamrouni R, Dupuy N, Farnet Da Silva AM. Using bibliometrics to analyze the state of art of pesticide use in vineyard agrosystems: a review. Environ Sci Pollut Res Int 2022; 29:80123-80136. [PMID: 36192591 DOI: 10.1007/s11356-022-23285-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 09/22/2022] [Indexed: 06/16/2023]
Abstract
The production of wine dates to ancient civilization and has heavily influenced different landscapes around the globe. Nowadays, wine is still an important sector in terms of land use and income source in many countries, more specifically in the European Mediterranean region. However, to control pests and regulate wine growth, the extensive use of pesticides is common. The effects and persistence of agrochemicals in the environment is well known and defined in scientific literature as well as the environmental and human health risks of these compounds. The purpose of this review was to do a state of art of worldwide production of academic literature using bibliometric principles and analysis to identify thematic areas of this type of agriculture, and its challenges in a changing world. For this review, the focus is on current practices to see what may evolve for more sustainable viticulture. It was found that the three main producers of wine, i.e., Spain, France, and Italy, are also three top producers of scientific literature on this topic. The use of bibliometric methodologies defined the main thematic areas on this subject as follows: soil-plant transfer of agrochemicals, heavy metal accumulation in vineyard soils, management practices in viticulture, water pollution transport, effects of viticulture on the living part of soil, sustainable alternatives to pesticides. We found that Spain, France, and Italy work the most on developing sustainable alternatives for agricultural practices; however, sustainable alternatives and practices were also the least developed thematic in general.
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Affiliation(s)
- Flor Regus
- Aix Marseille Univ, CNRS, IRD, Avignon Université, IMBE, Marseille, France
- Aix Marseille Univ, IRD, LPED, Marseille, France
| | | | - Rayhane Hamrouni
- Aix Marseille Univ, CNRS, IRD, Avignon Université, IMBE, Marseille, France
| | - Nathalie Dupuy
- Aix Marseille Univ, CNRS, IRD, Avignon Université, IMBE, Marseille, France
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Girard-Perier N, Marque SRA, Dupuy N, Claeys-Bruno M, Gaston F, Dorey S, Fifield LS, Ni Y, Li D, Fuchs WK, Murphy MK, Pillai SD, Pharr M, Nichols L. Effects of X-Rays, Electron Beam, and Gamma Irradiation on Chemical and Physical Properties of EVA Multilayer Films. Front Chem 2022; 10:888285. [PMID: 35646817 PMCID: PMC9131251 DOI: 10.3389/fchem.2022.888285] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 04/11/2022] [Indexed: 11/13/2022] Open
Abstract
Gamma-ray irradiation, using the cobalt-60 isotope, is the most common radiation modality used for medical device and biopharmaceutical products sterilization. Although X-ray and electron-beam (e-beam) sterilization technologies are mature and have been in use for decades, impediments remain to switching to these sterilization modalities because of lack of data on the resulting radiation effects for the associated polymers, as well as a lack of education for manufacturers and regulators on the viability of these sterilization alternatives. For this study, the compatibility of ethylene vinyl acetate (EVA) multilayer films with different ionizing radiation sterilization (X-ray, e-beam, and gamma irradiation) is determined by measuring chemical and physical film properties using high performance liquid chromatography, differential scanning calorimetry, Fourier-Transform InfraRed spectroscopy (FTIR), surface energy measurement, and electron spin resonance techniques. The results indicate that the three irradiation modalities induce no differences in thermal properties in the investigated dose range. Gamma and X-Ray irradiations generate the same level of reactive species in the EVA multilayer film, whereas e-beam generates a reduced quantity of reactive species.
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Affiliation(s)
| | - Sylvain R. A. Marque
- Case 551, CNRS, ICR, Aix Marseille University, Marseille, France
- *Correspondence: Sylvain R. A. Marque, ; Nathalie Dupuy, ; Samuel Dorey, ; Leonard S. Fifield,
| | - Nathalie Dupuy
- CNRS, IRD, IMBE, Aix Marseille University, Avignon Université, Marseille, France
- *Correspondence: Sylvain R. A. Marque, ; Nathalie Dupuy, ; Samuel Dorey, ; Leonard S. Fifield,
| | - Magalie Claeys-Bruno
- CNRS, IRD, IMBE, Aix Marseille University, Avignon Université, Marseille, France
| | | | - Samuel Dorey
- Sartorius Stedim FMT S. A. S., Aubagne, France
- *Correspondence: Sylvain R. A. Marque, ; Nathalie Dupuy, ; Samuel Dorey, ; Leonard S. Fifield,
| | - Leonard S. Fifield
- Pacific Northwest National Laboratory, Richland, WA, United States
- *Correspondence: Sylvain R. A. Marque, ; Nathalie Dupuy, ; Samuel Dorey, ; Leonard S. Fifield,
| | - Yelin Ni
- Pacific Northwest National Laboratory, Richland, WA, United States
| | - Donghui Li
- Pacific Northwest National Laboratory, Richland, WA, United States
| | - Witold K. Fuchs
- Pacific Northwest National Laboratory, Richland, WA, United States
| | - Mark K. Murphy
- Pacific Northwest National Laboratory, Richland, WA, United States
| | - Suresh D. Pillai
- National Center for Electron Beam Research, Texas A&M University, College Station, TX, United States
| | - Matt Pharr
- National Center for Electron Beam Research, Texas A&M University, College Station, TX, United States
- Department of Mechanical Engineering, Texas A&M University, College Station, TX, United States
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Girard-Perier N, Claeys-Bruno M, Marque SR, Dupuy N, Gaston F, Dorey S. Monitoring of peroxide in gamma irradiated PE/EVOH/PE multilayer film using methionine probe. Food and Bioproducts Processing 2022. [DOI: 10.1016/j.fbp.2022.02.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Padamsey Z, Katsanevaki D, Dupuy N, Rochefort NL. Neocortex saves energy by reducing coding precision during food scarcity. Neuron 2022; 110:280-296.e10. [PMID: 34741806 PMCID: PMC8788933 DOI: 10.1016/j.neuron.2021.10.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 09/07/2021] [Accepted: 10/15/2021] [Indexed: 11/21/2022]
Abstract
Information processing is energetically expensive. In the mammalian brain, it is unclear how information coding and energy use are regulated during food scarcity. Using whole-cell recordings and two-photon imaging in layer 2/3 mouse visual cortex, we found that food restriction reduced AMPA receptor conductance, reducing synaptic ATP use by 29%. Neuronal excitability was nonetheless preserved by a compensatory increase in input resistance and a depolarized resting potential. Consequently, neurons spiked at similar rates as controls but spent less ATP on underlying excitatory currents. This energy-saving strategy had a cost because it amplified the variability of visually-evoked subthreshold responses, leading to a 32% broadening of orientation tuning and impaired fine visual discrimination. This reduction in coding precision was associated with reduced levels of the fat mass-regulated hormone leptin and was restored by exogenous leptin supplementation. Our findings reveal that metabolic state dynamically regulates the energy spent on coding precision in neocortex.
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Affiliation(s)
- Zahid Padamsey
- Centre for Discovery Brain Sciences, School of Biomedical Sciences, University of Edinburgh, Edinburgh EH8 9XD, UK.
| | - Danai Katsanevaki
- Centre for Discovery Brain Sciences, School of Biomedical Sciences, University of Edinburgh, Edinburgh EH8 9XD, UK
| | - Nathalie Dupuy
- Centre for Discovery Brain Sciences, School of Biomedical Sciences, University of Edinburgh, Edinburgh EH8 9XD, UK
| | - Nathalie L Rochefort
- Centre for Discovery Brain Sciences, School of Biomedical Sciences, University of Edinburgh, Edinburgh EH8 9XD, UK; Simons Initiative for the Developing Brain, University of Edinburgh, Edinburgh EH8 9XD, UK.
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Girard-Perier N, Dorey S, Gaston F, Girard F, Marque SR, Dupuy N. One-year ageing FTIR monitoring of PE/EVOH/PE film after gamma or electron beam irradiation. Polym Degrad Stab 2022. [DOI: 10.1016/j.polymdegradstab.2021.109790] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Girard-Perier N, Claeys-Bruno M, Marque SRA, Dupuy N, Gaston F, Dorey S. Effects of X-ray, electron beam and gamma irradiation on PE/EVOH/PE multilayer film properties. Chem Commun (Camb) 2021; 57:11049-11051. [PMID: 34608899 DOI: 10.1039/d1cc02871e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
To increase sterilization capacity, X-ray and e-beam irradiation modalities are more and more attractive for the indutrial sterilization of heathcare products (medical devices and biopharmaceutical goods). However, no study comparing these different techniques are available concerning multi-layer films. Thus, with the PE/EVOH/PE multilayer film as a model, we show that, whatever the modality of irradiation, the thermal properties are not significantly changed as shown by DSC, and, as such, the physical and mechanical properties of this material are also expected to behave similarly. On the other hand, chemical properties such as oxidation ability are strikingly modified, i.e., the same oxidation level for X-ray and γ-irradiation and twice weaker for e-beam irradiation.
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Affiliation(s)
- Nina Girard-Perier
- Sartorius Stedim FMT S.A.S, Z.I. Les Paluds, Avenue de Jouques CS91051, Aubagne Cedex 13781, France.
| | | | | | - Nathalie Dupuy
- Aix Marseille Univ, Avignon Univ, CNRS, IRD, IMBE, Marseille, France.
| | - Fanny Gaston
- Sartorius Stedim FMT S.A.S, Z.I. Les Paluds, Avenue de Jouques CS91051, Aubagne Cedex 13781, France.
| | - Samuel Dorey
- Sartorius Stedim FMT S.A.S, Z.I. Les Paluds, Avenue de Jouques CS91051, Aubagne Cedex 13781, France.
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12
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Hamrouni R, Dupuy N, Karachurina A, Mitropoulou G, Kourkoutas Y, Molinet J, Maiga Y, Roussos S. Biotechnological potential of Zymotis-2 bioreactor for the cultivation of filamentous fungi. Biotechnol J 2021; 17:e2100288. [PMID: 34599625 DOI: 10.1002/biot.202100288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 09/24/2021] [Accepted: 09/27/2021] [Indexed: 11/09/2022]
Abstract
BACKGROUND/AIM A new prototype of Solid-State Fermentation Bioreactor, namely "Zymotis-2 ",was developed to produce fungal spores. MAIN METHODS AND MAJOR RESULTS A fermentation process for fungal spores, and hydrolase enzymes (endo and exoglucanases, amylases) production by Trichoderma asperellum DWG3, Aspergillus niger G131 and Beauveria bassiana was scaled-up from flasks and glass Raimbault column packed with 20 g of solid substrates (dry weight) to 5 kg of solid substrate by using the new Zymotis-2 bioreactor. Fungi strains growth using a mix of vine shoots, wheat bran, and olive pomace was tested under similar experimental conditions in Zymotis-2 bioreactor, column bioreactor and flasks in a parallel fermentation system. Overall, significant spore production on Zymotis-2 bioreactor was obtained, achieving 22.01 ± 0.01×109 spores/g DM 16.30 ± 0.07 × 109 spores/g DM, and 3.30 ± 0.07 × 109 spores/g DM for B. bassiana, T. asperellum DWG3, and A. niger G131, respectively. Forced aeration increased the endoglucanases, exoglucanases and amylases activities for T. asperellum DWG3 but B. bassiana and A. niger G131 were affected negatively by the aerated process, showing the lowest enzyme activities. CONCLUSIONS AND IMPLICATIONS In conclusion, a high yield of spores was obtained at 137 h of cultivation time, confirming the validity of the new Zymotis-2 bioreactor to produce virulent spores at low cost by T. asperellum, B. bassiana and A. niger G131.
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Affiliation(s)
- Rayhane Hamrouni
- Aix Marseille Univ, Avignon Univ, CNRS, IRD, IMBE, Marseille, France.,Univ. Manouba, ISBST, BVBGR-LR11ES31, Biotechpole Sidi Thabet, 2020 Ariana, Tunisia
| | - Nathalie Dupuy
- Aix Marseille Univ, Avignon Univ, CNRS, IRD, IMBE, Marseille, France
| | - Alina Karachurina
- Aix Marseille Univ, Avignon Univ, CNRS, IRD, IMBE, Marseille, France
| | - Gregoria Mitropoulou
- Laboratory of Applied Microbiology and Biotechnology, Department of Molecular Biology and Genetics, Democritus University of Thrace, University Campus, Alexandroupolis, GR 68100, Greece
| | - Yiannis Kourkoutas
- Laboratory of Applied Microbiology and Biotechnology, Department of Molecular Biology and Genetics, Democritus University of Thrace, University Campus, Alexandroupolis, GR 68100, Greece
| | - Josiane Molinet
- Aix Marseille Univ, Avignon Univ, CNRS, IRD, IMBE, Marseille, France
| | - Ynoussa Maiga
- Laboratoire de Microbiologie et de Biotechnologie Microbienne, Université Joseph Ki-Zerbo, Ouagadougou, Burkina Faso
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13
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Gaston F, Dupuy N, Girard-Perier N, Marque SRA, Dorey S. Investigations at the Product, Macromolecular, and Molecular Level of the Physical and Chemical Properties of a γ-Irradiated Multilayer EVA/EVOH/EVA Film: Comprehensive Analysis and Mechanistic Insights. Polymers (Basel) 2021; 13:2671. [PMID: 34451206 PMCID: PMC8402025 DOI: 10.3390/polym13162671] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Revised: 07/27/2021] [Accepted: 07/28/2021] [Indexed: 11/24/2022] Open
Abstract
Chemically and biologically safe storage of solutions for medical uses is a daily concern for industry since decades and it appeared even more dramatic during the last two years of pandemia. Biological safety is readily reached by sterilization using γ-irradiation process. However, such a type of irradiation induces the degradation and the release of chemicals able to spoil the biological solutions. Surprisingly, there are no investigations on multi-layer films combining multi-technique and multi-method approaches to unveil the events occurring during γ-irradiation. Furthermore, our investigations are focuses on properties/events occurring at product, macromolecular, and molecular levels.
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Affiliation(s)
- Fanny Gaston
- Sartorius Stedim FMT S.A.S, Z.I. Les Paluds, Avenue de Jouques CS91051, CEDEX, 13781 Aubagne, France;
| | - Nathalie Dupuy
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, 13013 Marseille, France
| | - Nina Girard-Perier
- Sartorius Stedim FMT S.A.S, Z.I. Les Paluds, Avenue de Jouques CS91051, CEDEX, 13781 Aubagne, France;
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, 13013 Marseille, France
- Aix Marseille Univ, CNRS, ICR, Case 551, 13397 Marseille, France
| | | | - Samuel Dorey
- Sartorius Stedim FMT S.A.S, Z.I. Les Paluds, Avenue de Jouques CS91051, CEDEX, 13781 Aubagne, France;
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Castellanos-Jankiewicz A, Guzmán-Quevedo O, Fénelon VS, Zizzari P, Quarta C, Bellocchio L, Tailleux A, Charton J, Fernandois D, Henricsson M, Piveteau C, Simon V, Allard C, Quemener S, Guinot V, Hennuyer N, Perino A, Duveau A, Maitre M, Leste-Lasserre T, Clark S, Dupuy N, Cannich A, Gonzales D, Deprez B, Mithieux G, Dombrowicz D, Bäckhed F, Prevot V, Marsicano G, Staels B, Schoonjans K, Cota D. Hypothalamic bile acid-TGR5 signaling protects from obesity. Cell Metab 2021; 33:1483-1492.e10. [PMID: 33887197 DOI: 10.1016/j.cmet.2021.04.009] [Citation(s) in RCA: 70] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 03/30/2021] [Accepted: 04/14/2021] [Indexed: 12/25/2022]
Abstract
Bile acids (BAs) improve metabolism and exert anti-obesity effects through the activation of the Takeda G protein-coupled receptor 5 (TGR5) in peripheral tissues. TGR5 is also found in the brain hypothalamus, but whether hypothalamic BA signaling is implicated in body weight control and obesity pathophysiology remains unknown. Here we show that hypothalamic BA content is reduced in diet-induced obese mice. Central administration of BAs or a specific TGR5 agonist in these animals decreases body weight and fat mass by activating the sympathetic nervous system, thereby promoting negative energy balance. Conversely, genetic downregulation of hypothalamic TGR5 expression in the mediobasal hypothalamus favors the development of obesity and worsens established obesity by blunting sympathetic activity. Lastly, hypothalamic TGR5 signaling is required for the anti-obesity action of dietary BA supplementation. Together, these findings identify hypothalamic TGR5 signaling as a key mediator of a top-down neural mechanism that counteracts diet-induced obesity.
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Affiliation(s)
| | - Omar Guzmán-Quevedo
- University of Bordeaux, INSERM, Neurocentre Magendie, U1215, F-3300 Bordeaux, France; Laboratory of Neuronutrition and Metabolic Disorders, Instituto Tecnológico Superior de Tacámbaro, 61650 Tacámbaro, Michoacán, Mexico; Pós-Graduação em Neuropsiquiatria e Ciências do Comportamento, Universidade Federal de Pernambuco, 50732-970 Recife, Pernambuco, Brazil
| | - Valérie S Fénelon
- University of Bordeaux, INSERM, Neurocentre Magendie, U1215, F-3300 Bordeaux, France
| | - Philippe Zizzari
- University of Bordeaux, INSERM, Neurocentre Magendie, U1215, F-3300 Bordeaux, France
| | - Carmelo Quarta
- University of Bordeaux, INSERM, Neurocentre Magendie, U1215, F-3300 Bordeaux, France
| | - Luigi Bellocchio
- University of Bordeaux, INSERM, Neurocentre Magendie, U1215, F-3300 Bordeaux, France
| | - Anne Tailleux
- University of Lille, INSERM, CHU Lille, Institut Pasteur de Lille, U1011-EGID, F-59019 Lille, France
| | - Julie Charton
- University of Lille, INSERM, Institut Pasteur de Lille, U1177 - Drugs and Molecules for Living Systems, EGID, F-59000 Lille, France
| | - Daniela Fernandois
- University of Lille, INSERM, CHU Lille, Laboratory of Development and Plasticity of the Neuroendocrine Brain, Lille Neuroscience & Cognition, UMR-S1172, EGID, F-59000, Lille, France
| | - Marcus Henricsson
- The Wallenberg Laboratory, Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, 413 45 Gothenburg, Sweden
| | - Catherine Piveteau
- University of Lille, INSERM, Institut Pasteur de Lille, U1177 - Drugs and Molecules for Living Systems, F-59000 Lille, France
| | - Vincent Simon
- University of Bordeaux, INSERM, Neurocentre Magendie, U1215, F-3300 Bordeaux, France
| | - Camille Allard
- University of Bordeaux, INSERM, Neurocentre Magendie, U1215, F-3300 Bordeaux, France
| | - Sandrine Quemener
- University of Lille, INSERM, CHU Lille, Institut Pasteur de Lille, U1011-EGID, F-59019 Lille, France
| | - Valentine Guinot
- University of Lille, INSERM, CHU Lille, Institut Pasteur de Lille, U1011-EGID, F-59019 Lille, France
| | - Nathalie Hennuyer
- University of Lille, INSERM, CHU Lille, Institut Pasteur de Lille, U1011-EGID, F-59019 Lille, France
| | - Alessia Perino
- Institute of Bioengineering, Faculty of Life Sciences, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Alexia Duveau
- University of Bordeaux, INSERM, Neurocentre Magendie, U1215, F-3300 Bordeaux, France
| | - Marlène Maitre
- University of Bordeaux, INSERM, Neurocentre Magendie, U1215, F-3300 Bordeaux, France
| | | | - Samantha Clark
- University of Bordeaux, INSERM, Neurocentre Magendie, U1215, F-3300 Bordeaux, France
| | - Nathalie Dupuy
- University of Bordeaux, INSERM, Neurocentre Magendie, U1215, F-3300 Bordeaux, France
| | - Astrid Cannich
- University of Bordeaux, INSERM, Neurocentre Magendie, U1215, F-3300 Bordeaux, France
| | - Delphine Gonzales
- University of Bordeaux, INSERM, Neurocentre Magendie, U1215, F-3300 Bordeaux, France
| | - Benoit Deprez
- University of Lille, INSERM, Institut Pasteur de Lille, U1177 - Drugs and Molecules for Living Systems, EGID, F-59000 Lille, France
| | - Gilles Mithieux
- INSERM U1213 Nutrition, Diabetes and the Brain, University of Lyon 1 Faculté de Médecine Lyon-Est, 69372 Lyon, France
| | - David Dombrowicz
- University of Lille, INSERM, CHU Lille, Institut Pasteur de Lille, U1011-EGID, F-59019 Lille, France
| | - Fredrik Bäckhed
- The Wallenberg Laboratory, Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, 413 45 Gothenburg, Sweden; Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health Sciences, University of Copenhagen, 2200 N Copenhagen, Denmark; Region Västra Götaland, Sahlgrenska University Hospital, Department of Clinical Physiology, Gothenburg, Sweden
| | - Vincent Prevot
- University of Lille, INSERM, CHU Lille, Laboratory of Development and Plasticity of the Neuroendocrine Brain, Lille Neuroscience & Cognition, UMR-S1172, EGID, F-59000, Lille, France
| | - Giovanni Marsicano
- University of Bordeaux, INSERM, Neurocentre Magendie, U1215, F-3300 Bordeaux, France
| | - Bart Staels
- University of Lille, INSERM, CHU Lille, Institut Pasteur de Lille, U1011-EGID, F-59019 Lille, France
| | - Kristina Schoonjans
- Institute of Bioengineering, Faculty of Life Sciences, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Daniela Cota
- University of Bordeaux, INSERM, Neurocentre Magendie, U1215, F-3300 Bordeaux, France.
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15
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Maléchaux A, Garcia R, Le Dréau Y, Pires A, Dupuy N, Cabrita MJ. Chemometric Discrimination of the Varietal Origin of Extra Virgin Olive Oils: Usefulness of 13C Distortionless Enhancement by Polarization Transfer Pulse Sequence and 1H Nuclear Magnetic Resonance Data and Effectiveness of Fusion with Mid-Infrared Spectroscopy Data. J Agric Food Chem 2021; 69:4177-4190. [PMID: 33819028 DOI: 10.1021/acs.jafc.0c06594] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The label authentication of monovarietal extra virgin olives is of great relevance from a socio-economical point of view. This work aims to gain insights into the prediction of the varietal origin of extra virgin olive oil (EVOO) samples obtained from single olive cultivars, French cultivars Olivière, Salonenque, and Tanche and Portuguese cultivars Blanqueta, Carrasquenha, and Galega Vulgar, collected in 2016-2017 and 2017-2018 harvest seasons. To pursue this study, spectroscopic approaches based on one-dimensional nuclear magnetic resonance (1D NMR) spectroscopy, namely, 1H and 13C NMR distortionless enhancement by polarization transfer (DEPT) 45 pulse sequence, and Fourier transform mid-infrared spectroscopy (FT-MIR) are used in combination with partial least square discriminant analysis (PLS1-DA). The results obtained by PLS1-DA models using 1H and 13C NMR DEPT 45 data are compared to those of PLS1-DA models using MIR data. The application of a control chart method allows for the optimization of the interpretation of the PLS1-DA results, and an efficient two-step strategy is proposed to improve the discrimination of the six studied cultivars. Then, NMR and MIR data are combined by either a mid- or high-level data fusion approach to further improve the discrimination. The models are also tested on samples from other cultivars to check their ability to reject varieties that were not considered in the calibration process.
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Affiliation(s)
- Astrid Maléchaux
- Aix Marseille Université, Avignon Université, CNRS, IRD, IMBE, 13013 Marseille, France
| | - Raquel Garcia
- Mediterranean Institute for Agriculture, Environment and Development (MED), Departamento de Fitotecnia, Escola de Ciências e Tecnologia, Universidade de Évora, Pólo da Mitra, Apartado 94, 7006-554 Évora, Portugal
| | - Yveline Le Dréau
- Aix Marseille Université, Avignon Université, CNRS, IRD, IMBE, 13013 Marseille, France
| | - Arona Pires
- Centro de Química de Évora, Universidade de Évora, Colégio Luis António Verney, 7000 Évora, Portugal
| | - Nathalie Dupuy
- Aix Marseille Université, Avignon Université, CNRS, IRD, IMBE, 13013 Marseille, France
| | - Maria Joao Cabrita
- Mediterranean Institute for Agriculture, Environment and Development (MED), Departamento de Fitotecnia, Escola de Ciências e Tecnologia, Universidade de Évora, Pólo da Mitra, Apartado 94, 7006-554 Évora, Portugal
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16
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Girard-Perier N, Claeys-Bruno M, Marque SRA, Dupuy N, Gaston F, Dorey S. Monitoring of Peroxide in Gamma Irradiated EVA Multilayer Film Using Methionine Probe. Polymers (Basel) 2020; 12:polym12123024. [PMID: 33348762 PMCID: PMC7766525 DOI: 10.3390/polym12123024] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 12/04/2020] [Accepted: 12/14/2020] [Indexed: 11/16/2022] Open
Abstract
In this study, the oxidation of methionine is used as a proxy to model the gamma radiation-induced changes in single-use bags; these changes lead to the formation of acids, radicals, and hydroperoxides. The mechanisms of formation of these reactive species and of methionine oxidation are discussed. With the help of reaction kinetics, the optimal conditions for the use of these single-use bags minimizing the impact of radical chemistry are highlighted. Biopharmaceutical bags gamma irradiated from 0 kGy to 260 kGy and aged from 0 to 36 months were filled with a methionine solution to follow the oxidation of the methionine. The methionine sulfoxide was measured with HPLC after different storage times (0, 3, 10, 14, 17, and 21 days). Three main results were analyzed through a design of experiments: the oxidative induction time, the methionine sulfoxide formation rate, and the maximum methionine sulfoxide concentration detected. A key aspect of the study is that it highlights that methionine is oxidized not necessarily directly by hydro(gen) peroxide but throughperacid, and likely peracetic acid. The answers to the design of experiments were considered to obtain the desirability domain for the optimization of the conditions of use for the single-use bags limiting the oxidation of methionine as well as the release of reactive species thereof.
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Affiliation(s)
- Nina Girard-Perier
- Sartorius Stedim FMT S.A.S, Z.I. Les Paluds, Avenue de Jouques CS91051, 13781 Aubagne CEDEX, France; (N.G.-P.); (F.G.)
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, 13013 Marseille, France
- Aix Marseille Univ, CNRS, ICR, Case 551, 13397 Marseille, France
| | - Magalie Claeys-Bruno
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, 13013 Marseille, France
- Correspondence: (M.C.-B.); (S.R.A.M.); (N.D.); (S.D.)
| | - Sylvain R. A. Marque
- Aix Marseille Univ, CNRS, ICR, Case 551, 13397 Marseille, France
- Correspondence: (M.C.-B.); (S.R.A.M.); (N.D.); (S.D.)
| | - Nathalie Dupuy
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, 13013 Marseille, France
- Correspondence: (M.C.-B.); (S.R.A.M.); (N.D.); (S.D.)
| | - Fanny Gaston
- Sartorius Stedim FMT S.A.S, Z.I. Les Paluds, Avenue de Jouques CS91051, 13781 Aubagne CEDEX, France; (N.G.-P.); (F.G.)
| | - Samuel Dorey
- Sartorius Stedim FMT S.A.S, Z.I. Les Paluds, Avenue de Jouques CS91051, 13781 Aubagne CEDEX, France; (N.G.-P.); (F.G.)
- Correspondence: (M.C.-B.); (S.R.A.M.); (N.D.); (S.D.)
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17
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Dorey S, Gaston F, Girard‐Perier N, Dupuy N, Marque SR, Barbaroux M, Audran G. Identification of chemical species created during γ‐irradiation of antioxidant used in polyethylene and polyethylene‐
co
‐vinyl acetate multilayer film. J Appl Polym Sci 2020. [DOI: 10.1002/app.49336] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Samuel Dorey
- Sartorius Stedim FMT S.A.S, Z.I. Les Paluds Aubagne Cedex France
| | - Fanny Gaston
- Sartorius Stedim FMT S.A.S, Z.I. Les Paluds Aubagne Cedex France
| | - Nina Girard‐Perier
- Sartorius Stedim FMT S.A.S, Z.I. Les Paluds Aubagne Cedex France
- Aix Marseille Univ, CNRS, IRDAvignon Université Marseille France
- Aix Marseille Univ, CNRS, ICR, case 551 Marseille cedex France
| | - Nathalie Dupuy
- Aix Marseille Univ, CNRS, IRDAvignon Université Marseille France
| | | | - Magali Barbaroux
- Sartorius Stedim FMT S.A.S, Z.I. Les Paluds Aubagne Cedex France
| | - Gérard Audran
- Aix Marseille Univ, CNRS, ICR, case 551 Marseille cedex France
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18
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Dorey S, Gaston F, Girard‐Perier N, Dupuy N, Marque SR, Delaunay L. Effect of gamma irradiation on the oxygen barrier properties in ethyl‐vinyl acetate/ethylene‐vinyl alcohol/ethyl‐vinyl acetate multilayer film. J Appl Polym Sci 2020. [DOI: 10.1002/app.49361] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Samuel Dorey
- Sartorius Stedim FMT S.A.SZ.I. Les Paluds Aubagne Cedex France
| | - Fanny Gaston
- Sartorius Stedim FMT S.A.SZ.I. Les Paluds Aubagne Cedex France
| | - Nina Girard‐Perier
- Sartorius Stedim FMT S.A.SZ.I. Les Paluds Aubagne Cedex France
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE Marseille France
- Aix Marseille Univ, CNRS, ICR, case 551, Marseille France
| | - Nathalie Dupuy
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE Marseille France
| | | | - Lucie Delaunay
- Sartorius Stedim FMT S.A.SZ.I. Les Paluds Aubagne Cedex France
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19
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Maléchaux A, Le Dréau Y, Artaud J, Dupuy N. Exploring the Scientific Interest for Olive Oil Origin: A Bibliometric Study from 1991 to 2018. Foods 2020; 9:foods9050556. [PMID: 32370096 PMCID: PMC7278817 DOI: 10.3390/foods9050556] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 04/22/2020] [Accepted: 04/28/2020] [Indexed: 12/03/2022] Open
Abstract
The authenticity and traceability of olive oils have been a growing concern over the past decades, generating numerous scientific studies. This article applies the tools of bibliometric analyses to explore the evolution and strategic orientation of the research focused on olive oil geographical and varietal origins. A corpus of 732 papers published in 178 different journals between 1991 and 2018 was considered. The most productive journals, authors and countries are highlighted, as well as the most cited articles associated with specific analytical techniques. A cluster analysis on the keywords generates 8 main themes of research, each focused on different analytical techniques or compounds of interest. A network between these thematic clusters and the main authors indicates their area of expertise. The metabolomics methods are drawing increasing interest and studies focused on the relationships between the origin and the sensory or nutritional properties provided by minor compounds of olive oils appear to be future lines of research.
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20
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Henschke JU, Dylda E, Katsanevaki D, Dupuy N, Currie SP, Amvrosiadis T, Pakan JMP, Rochefort NL. Reward Association Enhances Stimulus-Specific Representations in Primary Visual Cortex. Curr Biol 2020; 30:1866-1880.e5. [PMID: 32243857 PMCID: PMC7237886 DOI: 10.1016/j.cub.2020.03.018] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 02/07/2020] [Accepted: 03/09/2020] [Indexed: 01/01/2023]
Abstract
The potential for neuronal representations of external stimuli to be modified by previous experience is critical for efficient sensory processing and improved behavioral outcomes. To investigate how repeated exposure to a visual stimulus affects its representation in mouse primary visual cortex (V1), we performed two-photon calcium imaging of layer 2/3 neurons and assessed responses before, during, and after the presentation of a repetitive stimulus over 5 consecutive days. We found a stimulus-specific enhancement of the neuronal representation of the repetitively presented stimulus when it was associated with a reward. This was observed both after mice actively learned a rewarded task and when the reward was randomly received. Stimulus-specific enhanced representation resulted both from neurons gaining selectivity and from increased response reliability in previously selective neurons. In the absence of reward, there was either no change in stimulus representation or a decreased representation when the stimulus was viewed at a fixed temporal frequency. Pairing a second stimulus with a reward led to a similar enhanced representation and increased discriminability between the equally rewarded stimuli. Single-neuron responses showed that separate subpopulations discriminated between the two rewarded stimuli depending on whether the stimuli were displayed in a virtual environment or viewed on a single screen. We suggest that reward-associated responses enable the generalization of enhanced stimulus representation across these V1 subpopulations. We propose that this dynamic regulation of visual processing based on the behavioral relevance of sensory input ultimately enhances and stabilizes the representation of task-relevant features while suppressing responses to non-relevant stimuli.
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Affiliation(s)
- Julia U Henschke
- Center for Behavioral Brain Sciences, Institute of Cognitive Neurology and Dementia Research, Otto-von-Guericke University Magdeburg, Leipziger Str. 44, Magdeburg 39120, Germany; German Center for Neurodegenerative Diseases, Leipziger Str. 44, Magdeburg 39120, Germany
| | - Evelyn Dylda
- Centre for Discovery Brain Sciences, Edinburgh Medical School: Biomedical Sciences, University of Edinburgh, 15 George Square, Edinburgh, EH8 9XD, UK
| | - Danai Katsanevaki
- Centre for Discovery Brain Sciences, Edinburgh Medical School: Biomedical Sciences, University of Edinburgh, 15 George Square, Edinburgh, EH8 9XD, UK
| | - Nathalie Dupuy
- Centre for Discovery Brain Sciences, Edinburgh Medical School: Biomedical Sciences, University of Edinburgh, 15 George Square, Edinburgh, EH8 9XD, UK
| | - Stephen P Currie
- Centre for Discovery Brain Sciences, Edinburgh Medical School: Biomedical Sciences, University of Edinburgh, 15 George Square, Edinburgh, EH8 9XD, UK
| | - Theoklitos Amvrosiadis
- Centre for Discovery Brain Sciences, Edinburgh Medical School: Biomedical Sciences, University of Edinburgh, 15 George Square, Edinburgh, EH8 9XD, UK
| | - Janelle M P Pakan
- Center for Behavioral Brain Sciences, Institute of Cognitive Neurology and Dementia Research, Otto-von-Guericke University Magdeburg, Leipziger Str. 44, Magdeburg 39120, Germany; German Center for Neurodegenerative Diseases, Leipziger Str. 44, Magdeburg 39120, Germany.
| | - Nathalie L Rochefort
- Centre for Discovery Brain Sciences, Edinburgh Medical School: Biomedical Sciences, University of Edinburgh, 15 George Square, Edinburgh, EH8 9XD, UK; Simons Initiative for the Developing Brain, University of Edinburgh, 15 George Square, Edinburgh EH8 9XD, UK.
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Girard-Perier N, Dorey S, Marque SR, Dupuy N. Mapping the scientific research on the gamma irradiated polymers degradation (1975–2018). Radiat Phys Chem Oxf Engl 1993 2020. [DOI: 10.1016/j.radphyschem.2019.108577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Lafhal S, Bombarda I, Dupuy N, Jean M, Ruiz K, Vanloot P, Vanthuyne N. Chiroptical fingerprints to characterize lavender and lavandin essential oils. J Chromatogr A 2020; 1610:460568. [DOI: 10.1016/j.chroma.2019.460568] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 09/09/2019] [Accepted: 09/24/2019] [Indexed: 11/28/2022]
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Maléchaux A, Le Dréau Y, Vanloot P, Artaud J, Dupuy N. Discrimination of extra virgin olive oils from five French cultivars: En route to a control chart approach. Food Control 2019. [DOI: 10.1016/j.foodcont.2019.06.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Caillaud DM, Martin S, Ségala C, Dupuy N, Thibaudon M, Muti D. Short-acting β2-agonists (SABA) bronchodilator sales and outdoor mould in central France. Clin Transl Allergy 2019; 9:56. [PMID: 31666939 PMCID: PMC6813994 DOI: 10.1186/s13601-019-0296-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 10/17/2019] [Indexed: 11/10/2022] Open
Abstract
Background Temporal ecological studies have shown that outdoor moulds are associated with severe asthma exacerbations, as emergency department visits or hospitalisations. The aim of this was to assess the associations between daily sales of short-acting β2-agonists (SABA), a specific and frequent treatment for control of mild asthma exacerbations in children and young adults, and outdoor mould concentrations in the central France area over a 5 year period. Methods The relationship between daily changes in mould (25 species) concentrations and daily SABA sales within a population of patients aged 6 to 39 years in a middle-size town of central France (approximately 127,000) was obtained from social security database and analysed with generalized additive models, taking into account confounding factors (air pollution, weather conditions, pollen counts and trend). Results Daily SABA sales (mean, SD) rose from 17.3 (9.7) in 2010 to 22.7 (12) in 2015. The relative risk (RR [95% CI]) of SABA sales associated with an interquartile increase in mould concentration was significant in the whole population for Alternaria 1.06 [1.002–1.12]. When the influence of age and sex was accounted for, the relationship was significant only in 6–12 years old males for Alternaria 1.21 [1.04–1.41] and Aspergillus–Penicillium 1.08 [1.04–1.12]. Conclusions Daily SABA sales are positively associated with Alternaria spores in the general population of children and young adults. The association between daily SABA sales and temporal changes to Alternaria and Aspergillus–Penicillium in male children indicate that outdoor moulds contribute to asthma morbidity.
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Affiliation(s)
- D M Caillaud
- 1Service de Pneumologie-Allergologie, Hôpital Gabriel Montpied, Clermont Auvergne University, Montalembert Street, 63003 Clermont-Ferrand, France
| | | | | | - N Dupuy
- Réseau National de Surveillance Aérobiologique, 69690 Brussieu, France
| | - M Thibaudon
- Réseau National de Surveillance Aérobiologique, 69690 Brussieu, France
| | - D Muti
- 1Service de Pneumologie-Allergologie, Hôpital Gabriel Montpied, Clermont Auvergne University, Montalembert Street, 63003 Clermont-Ferrand, France
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Delcourt N, Rébufa C, Dupuy N, Boukhdoud N, Brunel C, Abadie J, Giffard I, Farnet-Da Silva AM. Infrared spectroscopy as a useful tool to predict land use depending on Mediterranean contrasted climate conditions: A case study on soils from olive-orchards and forests. Sci Total Environ 2019; 686:179-190. [PMID: 31176817 DOI: 10.1016/j.scitotenv.2019.05.240] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 05/16/2019] [Accepted: 05/17/2019] [Indexed: 06/09/2023]
Abstract
Soil chemical properties depend on various environmental factors such as above ground vegetation, climate and the parent rock substratum. Land use, and the associated management practices, is one of the major drivers which can deeply impact soil properties. To better understand the dynamics of soil chemical properties and to assess potential impact of land use, an improved monitoring of chemical signature in organo-mineral topsoils is necessary. Here, we explored how land use (forests or agrosystems i.e. olive-tree orchards) may shape soil chemical signature and whether it depends i) on the type of agricultural or sylvicultural practices, ii) on contrasted Mediterranean climate conditions at different spatial scales. We measured variations in soils properties by FTIR-ATR (Fourier-Transformed Infrared - Attenuated Total Reflectance) spectroscopy and elemental concentrations. FTIR showed that the aromatic fraction of organic matter and CaCO3 discriminated soils under different land uses (orchards or forests) and this depended on climate (sub-humid vs humid climate). Moreover, the chemical signatures of soils varied with the practices applied. For agrosystems, soils complemented with olive-mill wastes were characterized by aromatics compared to soils under natural grass or tillage. For forests, soils from Pinus spp. stands and Quercus spp. stands were discriminated by CaCO3 and aromatics respectively. Contrasted climate conditions at local scale, i.e. northern vs southern slopes for forests and distance from the sea (coastal vs inland area) for agrosystems, had an effect on soil chemical signature. The AcomDIM interpretation of FTIR-ATR signals showed that factors "land use", "practices" and "climate" and their interactions could have a significant impact on soil chemical signature. PLS modeling also confirmed that FTIR-ATR is a useful tool to predict a type of land use depending on climate.
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Affiliation(s)
- Ninon Delcourt
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, Marseille, France
| | - Catherine Rébufa
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, Marseille, France
| | - Nathalie Dupuy
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, Marseille, France
| | - Nathalie Boukhdoud
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, Marseille, France
| | - Caroline Brunel
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, Marseille, France
| | - Juliet Abadie
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, Marseille, France; UR RECOVER IRSTEA, Le Tholonet, 13100 Aix en Provence, France
| | - Isabelle Giffard
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, Marseille, France
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Carboué Q, Rébufa C, Dupuy N, Roussos S, Bombarda I. Solid state fermentation pilot-scaled plug flow bioreactor, using partial least square regression to predict the residence time in a semicontinuous process. Biochem Eng J 2019. [DOI: 10.1016/j.bej.2019.107248] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Dorey S, Gaston F, Girard-Perier N, Dupuy N, Marque SRA, Delaunay L. Generation of O2-Permeation Barrier during the Gamma-Irradiation of Polyethylene/Ethylene-Vinyl Alcohol/Polyethylene Multilayer Film. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b02145] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Samuel Dorey
- Sartorius Stedim FMT S.A.S, Z.I. Les Paluds, Avenue de Jouques CS91051, 13781 Aubagne Cedex, France
| | - Fanny Gaston
- Sartorius Stedim FMT S.A.S, Z.I. Les Paluds, Avenue de Jouques CS91051, 13781 Aubagne Cedex, France
| | - Nina Girard-Perier
- Sartorius Stedim FMT S.A.S, Z.I. Les Paluds, Avenue de Jouques CS91051, 13781 Aubagne Cedex, France
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, Marseille, France
- Aix Marseille Univ, CNRS, ICR, case 551, 13397 Marseille, France
| | - Nathalie Dupuy
- Aix Marseille Univ, Avignon Université, CNRS, IRD, IMBE, Marseille, France
| | | | - Lucie Delaunay
- Sartorius Stedim FMT S.A.S, Z.I. Les Paluds, Avenue de Jouques CS91051, 13781 Aubagne Cedex, France
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González Bautista E, Gutierrez E, Dupuy N, Gaime-Perraud I, Ziarelli F, Farnet da Silva AM. Pre-treatment of a sugarcane bagasse-based substrate prior to saccharification: Effect of coffee pulp and urea on laccase and cellulase activities of Pycnoporus sanguineus. J Environ Manage 2019; 239:178-186. [PMID: 30901696 DOI: 10.1016/j.jenvman.2019.03.033] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 02/20/2019] [Accepted: 03/06/2019] [Indexed: 06/09/2023]
Abstract
Production of second-generation bioethanol uses lignocellulose from agricultural by-products such as sugarcane bagasse (SCB). A lignocellulose pre-treatment is required to degrade lignin, ensuring further efficient saccharification. Two experimental designs were set up to define culture conditions of Pycnoporus sanguineus in mesocosms to increase laccase activities and thus delignification. The first experimental design tested the effect of phenolic complementation (via coffee pulp) and the use of urea as a simple nitrogen source and the second defined more precisely the percentages of coffee pulp and urea to enhance delignification. The responses measured were: lignocellulolytic activities, laccase isoform profiles by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) and the chemical transformation of the substrate using solid-state NMR of 13C. Adding 10% of coffee pulp increased laccase activities and fungal biomass (32.5% and 16% respectively), enhanced two constitutive isoforms (Rf 0.23 and 0.27), induced a new isoform (Rf 0.19) and led to a decrease in total aromatics. However, higher concentrations of coffee pulp (25%) decreased laccase and cellulase activities but no decrease in aromaticity was observed, potentially due to the toxic effect of phenols from coffee pulp. Moreover, laccase production was still inhibited even for lower concentrations of urea (0-5%). Our findings revealed that an agricultural by-product like coffee pulp can enhance laccase activity -though to a threshold- and that urea limited this process, indicating that other N-sources should be tested for the biological delignification of SCB.
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Affiliation(s)
- Enrique González Bautista
- Aix Marseille Université, Avignon Université, CNRS, IRD, IMBE, Marseille, France; Instituto de Biotecnología y Ecología Aplicada (INBIOTECA), Universidad Veracruzana, Campus para la Cultura, las Artes y el Deporte, Av. de las Culturas Veracruzanas No. 101Col. Emiliano Zapata, C.P. 91090, Xalapa, Veracruz, Mexico
| | - Enrique Gutierrez
- Instituto de Biotecnología y Ecología Aplicada (INBIOTECA), Universidad Veracruzana, Campus para la Cultura, las Artes y el Deporte, Av. de las Culturas Veracruzanas No. 101Col. Emiliano Zapata, C.P. 91090, Xalapa, Veracruz, Mexico
| | - Nathalie Dupuy
- Aix Marseille Université, Avignon Université, CNRS, IRD, IMBE, Marseille, France
| | | | - Fabio Ziarelli
- Aix Marseille Université, CNRS, Spectropole Campus St Jérôme, Fédération des Sciences Chimiques de Marseille, FR 1739, 13397, Marseille, France
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Dorey S, Gaston F, Dupuy N, Barbaroux M, Marque SRA. Reconciliation of pH, conductivity, total organic carbon with carboxylic acids detected by ion chromatography in solution after contact with multilayer films after γ-irradiation. Eur J Pharm Sci 2018; 117:216-226. [PMID: 29481860 DOI: 10.1016/j.ejps.2018.02.023] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 02/20/2018] [Accepted: 02/20/2018] [Indexed: 11/29/2022]
Abstract
The impact of γ-irradiation on polymers in multilayer films was studied by means of the study of the diffusion and release (spontaneous migration of the molecules from the container into the product) of chemical species in aqueous solution. A series of different measurements have been performed: pH, conductivity, total organic carbon (TOC) and ion chromatography (IC). Their evolution according to γ-irradiation dose was studied. More several rinsings made over several months allowed to quantify well the impact of the irradiation on these polymers. The samples are irradiated at several γ-doses, up to 270 kGy, and compared with a non-irradiated sample used as reference. It shows that quantity of generated carboxylic acids depends on the film material (PE/EVOH/PE and EVA/EVOH/EVA) and increases with γ-dose.
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Affiliation(s)
- Samuel Dorey
- Sartorius Stedim FMT S.A.S, Z.I. Les Paluds, Avenue de Jouques CS91051, 13781 Aubagne Cedex, France.
| | - Fanny Gaston
- Sartorius Stedim FMT S.A.S, Z.I. Les Paluds, Avenue de Jouques CS91051, 13781 Aubagne Cedex, France; Aix Marseille Univ, CNRS, IRD, Avignon Université, IMBE UMR 7263, 13397 Marseille, France; Aix Marseille Univ, CNRS, ICR, case 551, 13397 Marseille, France
| | - Nathalie Dupuy
- Aix Marseille Univ, CNRS, IRD, Avignon Université, IMBE UMR 7263, 13397 Marseille, France.
| | - Magali Barbaroux
- Sartorius Stedim FMT S.A.S, Z.I. Les Paluds, Avenue de Jouques CS91051, 13781 Aubagne Cedex, France
| | - Sylvain R A Marque
- Aix Marseille Univ, CNRS, ICR, case 551, 13397 Marseille, France; Vorozhtsov Novosibirsk Institute of organic chemistry, Office 312, 9 Prospect Academican Laurentiev, 630090 Novosibirsk, Russia
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Caillaud D, Cheriaux M, Martin S, Ségala C, Dupuy N, Evrard B, Thibaudon M. Short-term effect of outdoor mould spore exposure on prescribed allergy medication sales in Central France. Clin Exp Allergy 2018; 48:837-845. [PMID: 29698555 DOI: 10.1111/cea.13160] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 02/23/2018] [Accepted: 04/16/2018] [Indexed: 02/07/2023]
Abstract
BACKGROUND Outdoor moulds are classically associated with exacerbations of asthma. OBJECTIVE The aim of this paper was to examine nasal allergy morbidity by studying the short-term relationship between mould spore exposure and daily sales of reimbursable anti-allergic treatment in central France. METHODS The relationship between daily changes in mould concentrations and daily sales obtained from the national healthcare database was analysed with generalized additive models, taking into account confounding factors such as air pollution, weather conditions, pollen counts, and days of the week. RESULTS During the study, the average total yearly number of treated people was around 10 000 over approximately 230 000 surveyed. The relative risk (95% CI confidence interval) of sales of oral antihistamines with topical treatment associated with an interquartile increase in mould concentration was significant for Cladosporium 1.079 [1.019-1.142] and Aspergillus-Penicillium (Asp-Pen) 1.051 [1.021-1.082] in the whole population. When the influence of age and sex was considered, the relationship was significant only in male children aged 0-12 years and those aged between 13 and 49 years for Cladosporium: 1.256 [1.081-1.460] and 1.151 [1.063-1.245], respectively. The relationship was also significant for Asp-Pen: 1.038 [1.003-1.075] for those aged between 13 and 49 years and 1.056 [1.007-1.108] for adults over 50 years of age. CONCLUSION The association between prescribed daily sales of oral antihistamines with topical treatment sales is associated with temporal changes to Cladosporium and Aspergillus-Penicillium in the whole population. When the influence of age and sex was considered, these two moulds contributed to prescribed medication sales only in the male general population.
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Affiliation(s)
- D Caillaud
- Pulmonary Department, CHU Clermont-Ferrand, Université Clermont Auvergne, Clermont-Ferrand, France
| | - M Cheriaux
- Pulmonary Department, CHU Clermont-Ferrand, Université Clermont Auvergne, Clermont-Ferrand, France
| | | | | | - N Dupuy
- Réseau National de Surveillance Aérobiologique, Brussieu, France
| | - B Evrard
- Service d'Immunologie, CHU Clermont-Ferrand, INRA, Université Clermont Auvergne, Clermont-Ferrand, France
| | - M Thibaudon
- Réseau National de Surveillance Aérobiologique, Brussieu, France
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Haissaguerre M, Ferrière A, Simon V, Saucisse N, Dupuy N, André C, Clark S, Guzman-Quevedo O, Tabarin A, Cota D. mTORC1-dependent increase in oxidative metabolism in POMC neurons regulates food intake and action of leptin. Mol Metab 2018; 12:98-106. [PMID: 29699927 PMCID: PMC6001919 DOI: 10.1016/j.molmet.2018.04.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 04/05/2018] [Accepted: 04/07/2018] [Indexed: 01/19/2023] Open
Abstract
OBJECTIVE Nutrient availability modulates reactive oxygen species (ROS) production in the hypothalamus. In turn, ROS regulate hypothalamic neuronal activity and feeding behavior. The mechanistic target of rapamycin complex 1 (mTORC1) pathway is an important cellular integrator of the action of nutrients and hormones. Here we tested the hypothesis that modulation of mTORC1 activity, particularly in Proopiomelanocortin (POMC)-expressing neurons, mediates the cellular and behavioral effects of ROS. METHODS C57BL/6J mice or controls and their knockout (KO) littermates deficient either for the mTORC1 downstream target 70-kDa ribosomal protein S6 kinase 1 (S6K1) or for the mTORC1 component Rptor specifically in POMC neurons (POMC-rptor-KO) were treated with an intracerebroventricular (icv) injection of the ROS hydrogen peroxide (H2O2) or the ROS scavenger honokiol, alone or, respectively, in combination with the mTORC1 inhibitor rapamycin or the mTORC1 activator leptin. Oxidant-related signal in POMC neurons was assessed using dihydroethidium (DHE) fluorescence. RESULTS Icv administration of H2O2 decreased food intake, while co-administration of rapamycin, whole-body deletion of S6K1, or deletion of rptor in POMC neurons impeded the anorectic action of H2O2. H2O2 also increased oxidant levels in POMC neurons, an effect that hinged on functional mTORC1 in these neurons. Finally, scavenging ROS prevented the hypophagic action of leptin, which in turn required mTORC1 to increase oxidant levels in POMC neurons and to inhibit food intake. CONCLUSIONS Our results demonstrate that ROS and leptin require mTORC1 pathway activity in POMC neurons to increase oxidant levels in POMC neurons and consequently decrease food intake.
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Affiliation(s)
- Magalie Haissaguerre
- INSERM, Neurocentre Magendie, Physiopathologie de la Plasticité Neuronale, U1215, F-33000 Bordeaux, France; University of Bordeaux, Neurocentre Magendie, Physiopathologie de la Plasticité Neuronale, U1215, F-33000 Bordeaux, France; Department of Endocrinology, Hôpital Haut Lévèque, CHU Bordeaux, F-33600 Pessac, France
| | - Amandine Ferrière
- INSERM, Neurocentre Magendie, Physiopathologie de la Plasticité Neuronale, U1215, F-33000 Bordeaux, France; University of Bordeaux, Neurocentre Magendie, Physiopathologie de la Plasticité Neuronale, U1215, F-33000 Bordeaux, France; Department of Endocrinology, Hôpital Haut Lévèque, CHU Bordeaux, F-33600 Pessac, France
| | - Vincent Simon
- INSERM, Neurocentre Magendie, Physiopathologie de la Plasticité Neuronale, U1215, F-33000 Bordeaux, France; University of Bordeaux, Neurocentre Magendie, Physiopathologie de la Plasticité Neuronale, U1215, F-33000 Bordeaux, France
| | - Nicolas Saucisse
- INSERM, Neurocentre Magendie, Physiopathologie de la Plasticité Neuronale, U1215, F-33000 Bordeaux, France; University of Bordeaux, Neurocentre Magendie, Physiopathologie de la Plasticité Neuronale, U1215, F-33000 Bordeaux, France
| | - Nathalie Dupuy
- INSERM, Neurocentre Magendie, Physiopathologie de la Plasticité Neuronale, U1215, F-33000 Bordeaux, France; University of Bordeaux, Neurocentre Magendie, Physiopathologie de la Plasticité Neuronale, U1215, F-33000 Bordeaux, France
| | - Caroline André
- INSERM, Neurocentre Magendie, Physiopathologie de la Plasticité Neuronale, U1215, F-33000 Bordeaux, France; University of Bordeaux, Neurocentre Magendie, Physiopathologie de la Plasticité Neuronale, U1215, F-33000 Bordeaux, France
| | - Samantha Clark
- INSERM, Neurocentre Magendie, Physiopathologie de la Plasticité Neuronale, U1215, F-33000 Bordeaux, France; University of Bordeaux, Neurocentre Magendie, Physiopathologie de la Plasticité Neuronale, U1215, F-33000 Bordeaux, France
| | - Omar Guzman-Quevedo
- INSERM, Neurocentre Magendie, Physiopathologie de la Plasticité Neuronale, U1215, F-33000 Bordeaux, France; University of Bordeaux, Neurocentre Magendie, Physiopathologie de la Plasticité Neuronale, U1215, F-33000 Bordeaux, France
| | - Antoine Tabarin
- INSERM, Neurocentre Magendie, Physiopathologie de la Plasticité Neuronale, U1215, F-33000 Bordeaux, France; University of Bordeaux, Neurocentre Magendie, Physiopathologie de la Plasticité Neuronale, U1215, F-33000 Bordeaux, France; Department of Endocrinology, Hôpital Haut Lévèque, CHU Bordeaux, F-33600 Pessac, France
| | - Daniela Cota
- INSERM, Neurocentre Magendie, Physiopathologie de la Plasticité Neuronale, U1215, F-33000 Bordeaux, France; University of Bordeaux, Neurocentre Magendie, Physiopathologie de la Plasticité Neuronale, U1215, F-33000 Bordeaux, France.
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Gaston F, Dupuy N, Marque SRA, Gigmes D, Dorey S. Monitoring of the discoloration on γ-irradiated PE and EVA films to evaluate antioxidant stability. J Appl Polym Sci 2018. [DOI: 10.1002/app.46114] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Fanny Gaston
- Aix Marseille University, CNRS, IRD, Avignon Université, IMBE UMR 7263; Marseille France
- Aix Marseille University, CNRS, Institut de Chimie Radicalaire UMR7273; Marseille France
- Sartorius Stedim FMT S.A.S, Z.I. Les Paluds; Aubagne Cedex 13781 France
| | - Nathalie Dupuy
- Aix Marseille University, CNRS, IRD, Avignon Université, IMBE UMR 7263; Marseille France
| | - Sylvain R. A. Marque
- Aix Marseille University, CNRS, Institut de Chimie Radicalaire UMR7273; Marseille France
- Vorozhtsov Novosibirsk Institute of organic chemistry; Novosibirsk 630090 Russia
| | - Didier Gigmes
- Aix Marseille University, CNRS, Institut de Chimie Radicalaire UMR7273; Marseille France
| | - Samuel Dorey
- Sartorius Stedim FMT S.A.S, Z.I. Les Paluds; Aubagne Cedex 13781 France
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Yang Y, Battesti MJ, Costa J, Dupuy N, Paolini J. Volatile components as chemical markers of the botanical origin of Corsican honeys. FLAVOUR FRAG J 2017. [DOI: 10.1002/ffj.3414] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yin Yang
- Université de Corse; UMR CNRS 6134, Laboratoire Chimie des Produits Naturels; Campus Grimaldi BP 52 20250 Corte France
| | - Marie-José Battesti
- Université de Corse; UMR CNRS 6134, Laboratoire Chimie des Produits Naturels; Campus Grimaldi BP 52 20250 Corte France
| | - Jean Costa
- Université de Corse; UMR CNRS 6134, Laboratoire Chimie des Produits Naturels; Campus Grimaldi BP 52 20250 Corte France
| | - Nathalie Dupuy
- Aix-Marseille Université; IMBE UMR 7263, Avenue Escadrille Normandie Niemen; 13397 Marseille France
| | - Julien Paolini
- Université de Corse; UMR CNRS 6134, Laboratoire Chimie des Produits Naturels; Campus Grimaldi BP 52 20250 Corte France
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Colombani J, Chauvet E, Amat S, Dupuy N, Gigmes D. A FTIR/chemometrics approach to characterize the gamma radiation effects on iodine/epoxy-paint interactions in Nuclear Power Plants. Anal Chim Acta 2017; 960:53-62. [DOI: 10.1016/j.aca.2017.01.005] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Revised: 12/15/2016] [Accepted: 01/03/2017] [Indexed: 12/29/2022]
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Said MEA, Militello M, Saia S, Settanni L, Aleo A, Mammina C, Bombarda I, Vanloot P, Roussel C, Dupuy N. Artemisia arborescens Essential Oil Composition, Enantiomeric Distribution, and Antimicrobial Activity from Different Wild Populations from the Mediterranean Area. Chem Biodivers 2017; 13:1095-102. [PMID: 27447740 DOI: 10.1002/cbdv.201500510] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Accepted: 03/31/2016] [Indexed: 12/12/2022]
Abstract
Aerial parts of Artemisia arborescens were collected from different sites of the Mediterranean area (southwestern Algeria and southern Italy) and the chemical composition of their essential oil (EO) extracted by hydrodistillation was studied by both gas chromatography (GC) equipped with an enantioselective capillary column and GC/mass spectrometry (GC/MS). The EOs obtained were tested against several Listeria monocytogenes strains. Using GC and GC/MS, 41 compounds were identified, accounting for 96.0 - 98.8% of the total EO. All EOs showed a similar terpene profile, which was rich in chamazulene, β-thujone, and camphor. However, the concentration of such compounds varied among the EOs. A. arborescens EO inhibited up to 83.3% of the L. monocytogenes strains, but the inhibitory spectrum varied among the EOs, with those from Algeria showing a higher inhibition degree than the Italian EOs. Such effect likely depended on the ketone (β-thujone + camphor) content of the EO. The differences in the EO composition support the hypothesis that A. arborescens has at least two different chemotypes: a β-thujone and a chamazulene type. The EO inhibitory spectrum indicates the A. arborescens EO as a valuable option in the control of the food-borne pathogens.
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Affiliation(s)
- Mohammed El-Amin Said
- EA4672 LISA Equipe METICA, Aix-Marseille Université, Case 451, Av. Escadrille Normandie Niémen, FR-13397, Marseille Cedex 20
| | - Marcello Militello
- Department of Agricultural and Forest Sciences (SAF), Università degli Studi di Palermo, Viale delle Scienze, Ed. 4, IT-90128, Palermo.
| | - Sergio Saia
- Council for Agricultural Research and Economics (CREA) - Cereal Research Centre (CREA-CER), S.S. 673 km 25,200, IT-71122, Foggia
| | - Luca Settanni
- Department of Agricultural and Forest Sciences (SAF), Università degli Studi di Palermo, Viale delle Scienze, Ed. 4, IT-90128, Palermo
| | - Aurora Aleo
- Department of Health Promotion Sciences, "G. D'Alessandro'', Università degli Studi di Palermo, Via del Vespro, IT-90127, Palermo
| | - Caterina Mammina
- Department of Health Promotion Sciences, "G. D'Alessandro'', Università degli Studi di Palermo, Via del Vespro, IT-90127, Palermo
| | - Isabelle Bombarda
- EA4672 LISA Equipe METICA, Aix-Marseille Université, Case 451, Av. Escadrille Normandie Niémen, FR-13397, Marseille Cedex 20
| | - Pierre Vanloot
- EA4672 LISA Equipe METICA, Aix-Marseille Université, Case 451, Av. Escadrille Normandie Niémen, FR-13397, Marseille Cedex 20
| | - Christian Roussel
- Ecole Centrale, CNRS, iSm2 UMR 7313, Aix-Marseille Université, FR-13397, Marseille Cedex 20
| | - Nathalie Dupuy
- EA4672 LISA Equipe METICA, Aix-Marseille Université, Case 451, Av. Escadrille Normandie Niémen, FR-13397, Marseille Cedex 20
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Said MEA, Bombarda I, Naubron JV, Vanloot P, Jean M, Cheriti A, Dupuy N, Roussel C. Isolation of the major chiral compounds fromBubonium graveolensessential oil by HPLC and absolute configuration determination by VCD. Chirality 2016; 29:70-79. [DOI: 10.1002/chir.22672] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Revised: 11/02/2016] [Accepted: 11/07/2016] [Indexed: 11/08/2022]
Affiliation(s)
| | - Isabelle Bombarda
- Aix-Marseille Université; EA4672 LISA Equipe METICA; Marseille France
| | | | - Pierre Vanloot
- Aix-Marseille Université; EA4672 LISA Equipe METICA; Marseille France
| | - Marion Jean
- Aix-Marseille Université; CNRS, Centrale Marseille, iSm2; Marseille France
| | - Abdelkrim Cheriti
- Phytochemistry and Organic Synthesis Laboratory; University of Bechar; Bechar Algeria
| | - Nathalie Dupuy
- Aix-Marseille Université; EA4672 LISA Equipe METICA; Marseille France
| | - Christian Roussel
- Aix-Marseille Université; CNRS, Centrale Marseille, iSm2; Marseille France
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Villette V, Malvache A, Tressard T, Dupuy N, Cossart R. Internally Recurring Hippocampal Sequences as a Population Template of Spatiotemporal Information. Neuron 2016; 88:357-66. [PMID: 26494280 PMCID: PMC4622933 DOI: 10.1016/j.neuron.2015.09.052] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Revised: 07/23/2015] [Accepted: 09/16/2015] [Indexed: 12/22/2022]
Abstract
The hippocampus is essential for spatiotemporal cognition. Sequences of neuronal activation provide a substrate for this fundamental function. At the behavioral timescale, these sequences have been shown to occur either in the presence of successive external landmarks or through internal mechanisms within an episodic memory task. In both cases, activity is externally constrained by the organization of the task and by the size of the environment explored. Therefore, it remains unknown whether hippocampal activity can self-organize into a default mode in the absence of any external memory demand or spatiotemporal boundary. Here we show that, in the presence of self-motion cues, a population code integrating distance naturally emerges in the hippocampus in the form of recurring sequences. These internal dynamics clamp spontaneous travel since run distance distributes into integer multiples of the span of these sequences. These sequences may thus guide navigation when external landmarks are reduced. Without external cues, hippocampal dynamics spontaneously display recurring sequences Recurring sequences span across a fixed traveled distance Sequences are an internal cognitive template that shapes mouse behavior Sequences display an internally hardwired functional structure
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Affiliation(s)
- Vincent Villette
- Institut National de la Santé et de la Recherche Médicale Unité 901, 13009 Marseille, France; Aix-Marseille Université, Unité Mixte de Recherche S901, 13009 Marseille, France; Institut de Neurobiologie de la Méditerranée, 13009 Marseille, France
| | - Arnaud Malvache
- Institut National de la Santé et de la Recherche Médicale Unité 901, 13009 Marseille, France; Aix-Marseille Université, Unité Mixte de Recherche S901, 13009 Marseille, France; Institut de Neurobiologie de la Méditerranée, 13009 Marseille, France.
| | - Thomas Tressard
- Institut National de la Santé et de la Recherche Médicale Unité 901, 13009 Marseille, France; Aix-Marseille Université, Unité Mixte de Recherche S901, 13009 Marseille, France; Institut de Neurobiologie de la Méditerranée, 13009 Marseille, France
| | - Nathalie Dupuy
- Institut National de la Santé et de la Recherche Médicale Unité 901, 13009 Marseille, France; Aix-Marseille Université, Unité Mixte de Recherche S901, 13009 Marseille, France; Institut de Neurobiologie de la Méditerranée, 13009 Marseille, France
| | - Rosa Cossart
- Institut National de la Santé et de la Recherche Médicale Unité 901, 13009 Marseille, France; Aix-Marseille Université, Unité Mixte de Recherche S901, 13009 Marseille, France; Institut de Neurobiologie de la Méditerranée, 13009 Marseille, France.
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Korifi R, Plard J, Le Dréau Y, Rébufa C, Rutledge DN, Dupuy N. Highlighting metabolic indicators of olive oil during storage by the AComDim method. Food Chem 2016; 203:104-116. [PMID: 26948595 DOI: 10.1016/j.foodchem.2016.01.137] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Revised: 01/26/2016] [Accepted: 01/29/2016] [Indexed: 11/24/2022]
Abstract
Lipid oxidation during olive oil storage induces changes in the metabolite content of the oil, which can be measured using so-called quality indices. High values indicate poor quality oils that should be labeled accordingly or removed from the market. Based on quality indices measured over two years for two olive oils, the AComDim method was used to highlight the influence of five factors (olive oil type, oxygen, light, temperature and storage time) on oxidative stability during storage. To identify the significant factors, two full factorial experimental designs were built, each containing four of the five factors examined. The results showed that all five factors, as well as some two-factor interactions, were significant. Phenols and hydroperoxides were identified as being the most sensitive to these factors, and potential markers for the ageing of olive oil.
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Affiliation(s)
- R Korifi
- Aix-Marseille Université, LISA EA4672, 13397 Marseille, France.
| | - J Plard
- Aix-Marseille Université, LISA EA4672, 13397 Marseille, France.
| | - Y Le Dréau
- Aix-Marseille Université, LISA EA4672, 13397 Marseille, France.
| | - C Rébufa
- Aix-Marseille Université, LISA EA4672, 13397 Marseille, France.
| | - D N Rutledge
- UMR Ingénierie Procédés Aliments, AgroParisTech, INRA, Université Paris-Saclay, 91300 Massy, France.
| | - N Dupuy
- Aix-Marseille Université, LISA EA4672, 13397 Marseille, France.
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Said MEA, Vanloot P, Bombarda I, Naubron JV, Dahmane EM, Aamouche A, Jean M, Vanthuyne N, Dupuy N, Roussel C. Analysis of the major chiral compounds of Artemisia herba-alba essential oils (EOs) using reconstructed vibrational circular dichroism (VCD) spectra: En route to a VCD chiral signature of EOs. Anal Chim Acta 2016; 903:121-30. [DOI: 10.1016/j.aca.2015.11.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 10/21/2015] [Accepted: 11/05/2015] [Indexed: 02/07/2023]
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Dupuy N, Brahem Z, Amat S, Kister J. Near-Infrared Spectroscopy Analysis of Heavy Fuel Oils Using a New Diffusing Support. Appl Spectrosc 2015; 69:1137-1143. [PMID: 26449806 DOI: 10.1366/14-07725] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The characterization of heavy fuel oils (HFOs), used as fuel for boats, requires the analysis of various properties that are essential for engine optimization and pollution control. For some time, near-infrared (NIR) spectroscopy combined with chemometric treatment of the spectra was used for on-line analysis. This preliminary study included 61 heavy fuels from Europe, America, and Asia with different specifications according to their geographical origin; their refining process; and their physicochemical properties, including density, flash point, viscosity, and sulfur content. We have developed a new method for sampling heavy fuels on a fiberglass cell support. This support offers the advantages of speed, easy implementation, repeatable results, and freedom from problems associated with tank cleaning. Two sample presentations, an integrating sphere and an optical fiber, were used to collect the NIR spectra. A theoretical study of the choice of the value of resolution, scan number, and spectral region was conducted. The best conditions were chosen as a function of the quality of quantitative analysis results on viscosity, sulfur content, flash point, and density. The two collecting methods were compared on the same criteria.
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Affiliation(s)
- Nathalie Dupuy
- Aix Marseille Université, LISA, EA4672, Equipe METICA, 13397 Marseille Cedex 20, France
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Cheriaux M, Segala C, Martin S, Besancenot JP, Dupuy N, Thibaudon M, Caillaud D. Effets à court terme de l’exposition aux spores extérieures d’Alternaria et de Cladosporium (Cla) sur la rhinoconjonctivite allergique traitée (RCAT) à Clermont-Ferrand pendant 5ans. Rev Mal Respir 2015. [DOI: 10.1016/j.rmr.2014.10.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Rébufa C, Traboulsi A, Labed V, Dupuy N, Sergent M. Experimental design approach for identification of the factors influencing the γ-radiolysis of ion exchange resins. Radiat Phys Chem Oxf Engl 1993 2015. [DOI: 10.1016/j.radphyschem.2014.07.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Laroussi-Mezghani S, Vanloot P, Molinet J, Dupuy N, Hammami M, Grati-Kamoun N, Artaud J. Authentication of Tunisian virgin olive oils by chemometric analysis of fatty acid compositions and NIR spectra. Comparison with Maghrebian and French virgin olive oils. Food Chem 2014; 173:122-32. [PMID: 25466003 DOI: 10.1016/j.foodchem.2014.10.002] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2013] [Revised: 09/29/2014] [Accepted: 10/01/2014] [Indexed: 11/19/2022]
Abstract
Six Tunisian virgin olive oil (VOO) varieties, Chemlali Sfax, Chetoui, Chemchali, Oueslati, Zarrazi and Zalmati, were characterised by two analytical methods. The gas chromatography allowed the determination of 14 fatty acids and squalene amounts. With fatty acids of each variety, a characteristic "morphotypes" for each oil variety was established. Chemlali Sfax and Zalmati showed strong similarities. Gas chromatography of fatty acid methyl esters (FAME) and near infrared (NIR) spectra of oils, associated to chemometric treatment, allowed the study of the inter-varietal variability and the verification of the variety origins of some Tunisian commercial VOOs. The specificity of Tunisian VOOs was evaluated by comparing the samples to Algerian, Moroccan and French Protected Designation of Origin VOOs. Classification in varietal origins by SIMCA used the FAME compositions and NIR spectra of the most represented varieties (Chemlali Sfax, Chetoui and Oueslati) showed a high potential to authenticate the varietal origin of Tunisian VOOs.
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Affiliation(s)
- S Laroussi-Mezghani
- Aix-Marseille Université, LISA, EA4672, Équipe METICA, 13397 Marseille cedex 20, France; Biochemistry Laboratory, LR12ES05 'Nutrition-Functional Food & Vascular Health', USCR Mass Spectrometry, Faculty of Medicine, University of Monastir, Tunisia; Institut de l'Olivier, Unité Technologie et Qualité, BP 1087, 3018 Sfax, Tunisia.
| | - P Vanloot
- Aix-Marseille Université, LISA, EA4672, Équipe METICA, 13397 Marseille cedex 20, France
| | - J Molinet
- Aix-Marseille Université, LISA, EA4672, Équipe METICA, 13397 Marseille cedex 20, France
| | - N Dupuy
- Aix-Marseille Université, LISA, EA4672, Équipe METICA, 13397 Marseille cedex 20, France
| | - M Hammami
- Biochemistry Laboratory, LR12ES05 'Nutrition-Functional Food & Vascular Health', USCR Mass Spectrometry, Faculty of Medicine, University of Monastir, Tunisia
| | - N Grati-Kamoun
- Institut de l'Olivier, Unité Technologie et Qualité, BP 1087, 3018 Sfax, Tunisia
| | - J Artaud
- Aix-Marseille Université, LISA, EA4672, Équipe METICA, 13397 Marseille cedex 20, France
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Korifi R, Le Dréau Y, Dupuy N. Comparative study of the alignment method on experimental and simulated chromatographic data. J Sep Sci 2014; 37:3276-91. [PMID: 25197022 DOI: 10.1002/jssc.201400700] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Revised: 08/13/2014] [Accepted: 08/24/2014] [Indexed: 11/06/2022]
Abstract
One of the major problems in the signal comparison of chromatographic data is the variability of response caused by instrumental drifts and others instabilities. Measures of quality control and evaluation of conformity are inherently sensitive to shift. It is essential to be able to compare test samples to reference samples in an evolutionary analytical environment by offsetting the inevitable drift. Therefore, prior to any multivariate analysis, the alignment of analytical signals is a compulsory preprocessing step. During recent years, many researchers have taken a greater interest in the study of the alignment. The present paper is an updated review on the alignment algorithms, methods, and improvements used in chromatography. The study is dedicated to one-dimensional signals. Several of the exposed methods have common theoretical bases and can differ through their optimization methods. The main issue for the operator is to choose the appropriate method according to the type of signals to be processed.
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Affiliation(s)
- Rabia Korifi
- Laboratoire LISA, EA 4672 Equipe METICA, Case 451, Aix-Marseille Université, Marseille Cedex, France
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Dupuy N, Gaydou V, Kister J. Quantitative Analysis of Lavender (<i>Lavandula angustifolia</i>) Essential Oil Using Multiblock Data from Infrared Spectroscopy. ACTA ACUST UNITED AC 2014. [DOI: 10.4236/ajac.2014.510071] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Amat S, Braham Z, Le Dréau Y, Kister J, Dupuy N. Simulated aging of lubricant oils by chemometric treatment of infrared spectra: potential antioxidant properties of sulfur structures. Talanta 2013; 107:219-24. [PMID: 23598215 DOI: 10.1016/j.talanta.2012.12.051] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2012] [Revised: 12/07/2012] [Accepted: 12/13/2012] [Indexed: 11/26/2022]
Abstract
Lubricant oils are complex mixtures of base oils and additives. The evolution of their performance over time strongly depends on its resistance to thermal oxidation. Sulfur compounds revealed interesting antioxidant properties. This study presents a method to evaluate the lubricant oil oxidation. Two samples, a synthetic and a paraffinic base oils, were tested pure and supplemented with seven different sulfur compounds. An aging cell adapted to a Fourier Transform InfraRed (FT-IR) spectrometer allows the continuous and direct analysis of the oxidative aging of base oils. Two approaches were applied to study the oxidation/anti-oxidation phenomena. The first one leads to define a new oxidative spectroscopic index based on a reduced spectral range where the modifications have been noticed (from 3050 to 2750 cm(-1)). The second method is based on chemometric treatments of whole spectra (from 4000 to 400 cm(-1)) to extract underlying information. A SIMPLe-to-use Interactive Self Modeling Analysis (SIMPLISMA) method has been used to identify more precisely the chemical species produced or degraded during the thermal treatment and to follow their evolution. Pure spectra of different species present in oil were obtained without prior information of their existence. The interest of this tool is to supply relative quantitative information reflecting evolution of the relative abundance of the different products over thermal aging. Results obtained by these two ways have been compared to estimate their concordance.
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Affiliation(s)
- Sandrine Amat
- Aix-Marseille Université, LISA, EA 4672 Equipe METICA, Service 451, 13397 Marseille Cedex 20, France.
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El Montassir D, Aamouche A, Vanthuyne N, Jean M, Vanloot P, Taourirte M, Dupuy N, Roussel C. Attempts to separate (-)-α-thujone, (+)-β-thujone epimers from camphor enantiomers by enantioselective HPLC with polarimetric detection. J Sep Sci 2013; 36:832-9. [DOI: 10.1002/jssc.201200907] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2012] [Revised: 11/07/2012] [Accepted: 11/07/2012] [Indexed: 10/27/2022]
Affiliation(s)
- Dahmane El Montassir
- Bioorganic and Macromolecular Chemistry Laboratory; FST, Cadi Ayyad University; Marrakech; Morocco
| | - Ahmed Aamouche
- MSISM Research team; Faculté polydisciplinaire; Cadi Ayyad University; Safi; Morocco
| | | | - Marion Jean
- Aix Marseille Université; CNRS, iSm2 UMR 7313; Marseille; France
| | - Pierre Vanloot
- Aix Marseille Université; CNRS; LISA-METICA; EA 4672; Marseille; France
| | - Moha Taourirte
- Bioorganic and Macromolecular Chemistry Laboratory; FST, Cadi Ayyad University; Marrakech; Morocco
| | - Nathalie Dupuy
- Aix Marseille Université; CNRS; LISA-METICA; EA 4672; Marseille; France
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Vanloot P, Dupuy N, Guiliano M, Artaud J. Characterisation and authentication of A. senegal and A. seyal exudates by infrared spectroscopy and chemometrics. Food Chem 2012; 135:2554-60. [DOI: 10.1016/j.foodchem.2012.06.125] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2011] [Revised: 04/18/2012] [Accepted: 06/21/2012] [Indexed: 12/01/2022]
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Traboulsi A, Dupuy N, Rebufa C, Sergent M, Labed V. Investigation of gamma radiation effect on the anion exchange resin Amberlite IRA-400 in hydroxide form by Fourier transformed infrared and 13C nuclear magnetic resonance spectroscopies. Anal Chim Acta 2012; 717:110-21. [DOI: 10.1016/j.aca.2011.12.046] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2011] [Revised: 12/15/2011] [Accepted: 12/21/2011] [Indexed: 11/26/2022]
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