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Dupont D, Robert M, Brenier-Pinchart M, Lefevre A, Wallon M, Pelloux H. Toxoplasma gondii, a plea for a thorough investigation of its oncogenic potential. Heliyon 2023; 9:e22147. [PMID: 38034818 PMCID: PMC10685377 DOI: 10.1016/j.heliyon.2023.e22147] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 10/20/2023] [Accepted: 11/05/2023] [Indexed: 12/02/2023] Open
Abstract
It is estimated that 30 % of the world's population harbours the parasite Toxoplasma gondii, particularly in the brain. Beyond its implication in potentially severe opportunistic or congenital infections, this persistence has long been considered as without consequence. However, certain data in animals and humans suggest that this carriage may be linked to various neuropsychiatric or neurodegenerative disorders. The hypothesis of a potential cerebral oncogenicity of the parasite is also emerging. In this personal view, we will present the epidemiological arguments in favour of an association between toxoplasmosis and cerebral malignancy, before considering the points that could underlie a potential causal link. More specifically, we will focus on the brain as the preferred location for T. gondii persistence and the propensity of this parasite to interfere with the apoptosis and cell cycle signalling pathways of their host cell.
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Affiliation(s)
- D. Dupont
- Institut des Agents Infectieux, Parasitologie Mycologie, Hôpital de la Croix-Rousse, Hospices Civils de Lyon, Lyon, 69004, France
- Physiologie intégrée du système d’éveil, Centre de Recherche en Neurosciences de Lyon, INSERM U1028-CNRS UMR 5292, Faculté de Médecine, Université Claude Bernard Lyon 1, Bron, 69500, France
| | - M.G. Robert
- Service de Parasitologie-Mycologie, CHU Grenoble Alpes, Grenoble, 38000, France
- Université Grenoble Alpes, Institut pour l'Avancée des Biosciences (IAB), INSERM U1209-CNRS UMR 5309, Grenoble, 38000, France
| | - M.P. Brenier-Pinchart
- Service de Parasitologie-Mycologie, CHU Grenoble Alpes, Grenoble, 38000, France
- Université Grenoble Alpes, Institut pour l'Avancée des Biosciences (IAB), INSERM U1209-CNRS UMR 5309, Grenoble, 38000, France
| | - A. Lefevre
- Institut des Agents Infectieux, Parasitologie Mycologie, Hôpital de la Croix-Rousse, Hospices Civils de Lyon, Lyon, 69004, France
| | - M. Wallon
- Institut des Agents Infectieux, Parasitologie Mycologie, Hôpital de la Croix-Rousse, Hospices Civils de Lyon, Lyon, 69004, France
- Physiologie intégrée du système d’éveil, Centre de Recherche en Neurosciences de Lyon, INSERM U1028-CNRS UMR 5292, Faculté de Médecine, Université Claude Bernard Lyon 1, Bron, 69500, France
| | - H. Pelloux
- Service de Parasitologie-Mycologie, CHU Grenoble Alpes, Grenoble, 38000, France
- Université Grenoble Alpes, Institut pour l'Avancée des Biosciences (IAB), INSERM U1209-CNRS UMR 5309, Grenoble, 38000, France
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Menard O, Lesmes U, Shani-Levi CS, Araiza Calahorra A, Lavoisier A, Morzel M, Rieder A, Feron G, Nebbia S, Mashiah L, Andres A, Bornhorst G, Carrière F, Egger L, Gwala S, Heredia A, Kirkhus B, Macierzanka A, Portman R, Recio I, Santé-Lhoutellier V, Tournier C, Sarkar A, Brodkorb A, Mackie A, Dupont D. Static in vitro digestion model adapted to the general older adult population: an INFOGEST international consensus. Food Funct 2023; 14:4569-4582. [PMID: 37099034 DOI: 10.1039/d3fo00535f] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/27/2023]
Abstract
Understanding the mechanisms of food digestion is of paramount importance to determine the effect foods have on human health. Significant knowledge on the fate of food during digestion has been generated in healthy adults due to the development of physiologically-relevant in vitro digestion models. However, it appears that the performance of the oro-gastrointestinal tract is affected by ageing and that a model simulating the digestive conditions found in a younger adult (<65 years) is not relevant for an older adult (>65 years). The objectives of the present paper were: (1) to conduct an exhaustive literature search to find data on the physiological parameters of the older adult oro-gastrointestinal tract, (2) to define the parameters of an in vitro digestion model adapted to the older adult. International experts have discussed all the parameters during a dedicated workshop organized within the INFOGEST network. Data on food bolus properties collected in the older adult were gathered, including food particle size found in older adult boluses. In the stomach and small intestine, data suggest that significant physiological changes are observed between younger and older adults. In the latter, the rate of gastric emptying is slowed down, the pH of the stomach content is higher, the amount of secretions and thus the hydrolytic activities of gastric and intestinal digestive enzymes are reduced and the concentration of bile salts lower. The consensus in vitro digestion model of the older adult proposed here will allow significant progress to be made in understanding the fate of food in this specific population, facilitating the development of foods adapted to their nutritional needs. Nevertheless, better foundational data when available and further refinement of the parameters will be needed to implement the proposed model in the future.
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Affiliation(s)
- O Menard
- INRAE - Institut Agro, STLO, Rennes, France.
| | - U Lesmes
- Technion Israel Institute of Technology, Israel
| | | | | | - A Lavoisier
- INRAE - Institut Agro, STLO, Rennes, France.
| | - M Morzel
- INRAE - Institut Agro, STLO, Rennes, France.
| | - A Rieder
- Nofima AS - Norwegian Institute of Food, Fisheries and Aquaculture, PB 210, N-1433 Ås, Norway
| | - G Feron
- Centre des Sciences du Goût et de l'Alimentation, CNRS, INRAE, Institut Agro, Université de Bourgogne Franche-Comté, F-21000 Dijon, France
- INRAE, PROBE research infrastructure, ChemoSens facility, F-21000 Dijon, France
| | - S Nebbia
- INRAE - Institut Agro, STLO, Rennes, France.
| | - L Mashiah
- Technion Israel Institute of Technology, Israel
| | - A Andres
- Institute of Food Engineering for Development, Universitat Politecnica de Valencia, Valencia, Spain
| | - G Bornhorst
- Department of Biological and Agricultural Engineering, University of California Davis, Davis, USA
| | - F Carrière
- Aix Marseille University, CNRS, UMR7281 Bioenergetics and Protein Engineering, Marseille, France
| | - L Egger
- Agroscope, Schwarzenburgstr, 161, 3003 Bern, Switzerland
| | - S Gwala
- Teagasc Food Research Centre, Fermoy, Co. Cork, Moorepark, Ireland
| | - A Heredia
- Institute of Food Engineering for Development, Universitat Politecnica de Valencia, Valencia, Spain
| | - B Kirkhus
- Nofima AS - Norwegian Institute of Food, Fisheries and Aquaculture, PB 210, N-1433 Ås, Norway
| | - A Macierzanka
- Gdansk University of Technology, Faculty of Chemistry, Department of Colloid and Lipid Science, 80-322 Gdansk, Poland
| | - R Portman
- Agroscope, Schwarzenburgstr, 161, 3003 Bern, Switzerland
| | - I Recio
- Instituto de Investigación en Ciencias de la Alimentación, CIAL (CSIC-UAM, CEI UAM+CSIC), Nicolás Cabrera, 9, 28049 Madrid, Spain
| | - V Santé-Lhoutellier
- INRAE, France, QuaPA, UR370, Centre de Clermont Auvergne Rhône Alpes, F-63122 Saint Genes Champanelle, France
| | - C Tournier
- Centre des Sciences du Goût et de l'Alimentation, CNRS, INRAE, Institut Agro, Université de Bourgogne Franche-Comté, F-21000 Dijon, France
- INRAE, PROBE research infrastructure, ChemoSens facility, F-21000 Dijon, France
| | - A Sarkar
- Univ Leeds, Sch Food Sci & Nutr, Leeds LS2 9JT, W Yorkshire, UK
| | - A Brodkorb
- Teagasc Food Research Centre, Fermoy, Co. Cork, Moorepark, Ireland
| | - A Mackie
- Univ Leeds, Sch Food Sci & Nutr, Leeds LS2 9JT, W Yorkshire, UK
| | - D Dupont
- INRAE - Institut Agro, STLO, Rennes, France.
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Lorieau L, Floury J, Septier C, Laguerre A, Le Roux L, Hazart E, Ligneul A, Dupont D, Vigneau E, Hanafi M, Feron G, Labouré H. Relationship among oral health status, bolus formation and food comfortability during consumption of model cheeses in elderly. Food Funct 2021; 12:7379-7389. [PMID: 34184693 DOI: 10.1039/d1fo00767j] [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: 12/14/2022]
Abstract
The aim of this study was to investigate the impact of oral impairment on chewing behaviour, food bolus properties and food comfortability during elderly consumption of model cheeses. Seventy-two elderly persons (aged 66 to 88) was recruited and classified into two groups according to dental status (poor vs. satisfactory). They showed a wide range of salivary flow rates whatever their dental status (stimulated: 0.2-3.8 mL min-1, resting: 0.1-0.8 mL min-1). Standardized bites of four model cheeses with an identical composition but different textures (soft, hard, processed and whipped) were tested. The time and number of chewing cycles required to form a bolus were measured. The rheological properties of the bolus were studied, as was saliva moistening. Food comfortability was assessed by means of a questionnaire composed of 5 sections (1-oral comfort, 2-bolus formation, 3-pain, 4-texture and 5-flavour perception). The chewing parameters measured were not modified by the oral health. However, elderly with poor dentition formed harder boluses than elderly with satisfactory dentition. Moreover, for elderly with poor dentition, the quantity of saliva incorporated into the bolus was correlated with the stimulated salivary flow rate, which was not the case for elderly with satisfactory dentition. General oral comfort and its different attributes were poorly associated with the oral health of the elderly. A multifactorial analysis performed on an average cheese showed that food comfortability is independent of changes in the hardness and moistening of the bolus, regardless of dental status. In particular, poor dental status increases the hardness of the bolus without modifying its comfortability.
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Affiliation(s)
- L Lorieau
- STLO, INRAE, Institut Agro, 35042, Rennes, France
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Yu X, Leconte N, Méjean S, Garric G, Even S, Henry G, Tessier FJ, Howsam M, Croguennec T, Gésan-Guiziou G, Dupont D, Jeantet R, Deglaire A. Semi-industrial production of a minimally processed infant formula powder using membrane filtration. J Dairy Sci 2021; 104:5265-5278. [PMID: 33685709 DOI: 10.3168/jds.2020-19529] [Citation(s) in RCA: 4] [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: 08/26/2020] [Accepted: 01/08/2021] [Indexed: 01/07/2023]
Abstract
Infant formula (IF) is submitted to several heat treatments during production, which can lead to denaturation or aggregation of proteins and promote Maillard reaction. The objective of this study was to investigate innovative minimal processing routes for the production of first-age IF powder, thus ensuring microbial safety with minimal level of protein denaturation. Three nutritionally complete IF powders were produced at a semi-industrial scale based on ingredients obtained by fresh bovine milk microfiltration (0.8 and 0.1-µm pore size membranes). Low-temperature vacuum evaporation (50°C) and spray-drying (inlet and outlet temperatures of 160 and 70°C, respectively) were conducted to produce the T- formula with no additional heat treatment. The T+ formula was produced with a moderate heat treatment (75°C for 2 min) applied before spray-drying, whereas the T+++ formula received successive heat treatments (72°C for 30 s on the milk; 90°C for 2-3 s before evaporation; 85°C for 2 min before spray-drying), thus mimicking commercial powdered IF. Protein denaturation and Maillard reaction products were followed throughout the production steps and the physicochemical properties of the powders were characterized. The 3 IF powders presented satisfactory physical properties in terms of aw, free fat content, glass transition temperature, and solubility index, as well as satisfactory bacteriological quality with a total flora <103 cfu/g and an absence of pathogens when a high level of bacteriological quality of the ingredients was ensured. Protein denaturation occurred mostly during the heat treatments of T+ and T+++ and was limited during the spray-drying process. The IF powder produced without heat treatment (T-) presented a protein denaturation extent (6 ± 4%) significantly lower than that in T+++ (58 ± 0%), but not significantly different from that in T+ (10 ± 4%). Although T- tended to contain less Maillard reaction products than T+ and T+++, the Maillard reaction products did not significantly discriminate the infant formulas in the frame of this work. The present study demonstrated the feasibility of producing at a semi-industrial scale an infant formula being bacteriologically safe and containing a high content of native proteins. Application of a moderate heat treatment before spray-drying could further guarantee the microbiological quality of the IF powders while maintaining a low protein denaturation extent. This study opens up new avenues for the production of minimally processed IF powders.
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Affiliation(s)
- X Yu
- STLO, INRAE, Institut Agro, 35042, Rennes, France
| | - N Leconte
- STLO, INRAE, Institut Agro, 35042, Rennes, France
| | - S Méjean
- STLO, INRAE, Institut Agro, 35042, Rennes, France
| | - G Garric
- STLO, INRAE, Institut Agro, 35042, Rennes, France
| | - S Even
- STLO, INRAE, Institut Agro, 35042, Rennes, France
| | - G Henry
- STLO, INRAE, Institut Agro, 35042, Rennes, France
| | - F J Tessier
- University of Lille, Inserm, CHU Lille, Pasteur Institute of Lille, U1167 - RID-AGE, F-59000 Lille, France
| | - M Howsam
- University of Lille, Inserm, CHU Lille, Pasteur Institute of Lille, U1167 - RID-AGE, F-59000 Lille, France
| | - T Croguennec
- STLO, INRAE, Institut Agro, 35042, Rennes, France
| | | | - D Dupont
- STLO, INRAE, Institut Agro, 35042, Rennes, France
| | - R Jeantet
- STLO, INRAE, Institut Agro, 35042, Rennes, France
| | - A Deglaire
- STLO, INRAE, Institut Agro, 35042, Rennes, France.
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Debarbieux S, Delaunay P, Raymond C, Dupont D, Persat F. Unusual location for bedbugs. Clin Microbiol Infect 2020; 26:895-896. [DOI: 10.1016/j.cmi.2020.01.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 01/09/2020] [Accepted: 01/11/2020] [Indexed: 11/26/2022]
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Salsé M, Gangneux JP, Cassaing S, Delhaes L, Fekkar A, Dupont D, Botterel F, Costa D, Bourgeois N, Bouteille B, Houzé S, Dannaoui E, Guegan H, Charpentier E, Persat F, Favennec L, Lachaud L, Sasso M. Multicentre study to determine the Etest epidemiological cut-off values of antifungal drugs in Candida spp. and Aspergillus fumigatus species complex. Clin Microbiol Infect 2019; 25:1546-1552. [DOI: 10.1016/j.cmi.2019.04.027] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 04/17/2019] [Accepted: 04/22/2019] [Indexed: 02/04/2023]
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Hiolle M, Lechevalier V, Floury J, Boulier-Monthéan N, Prioul C, Dupont D, Nau F. In vitro digestion of complex foods: How microstructure influences food disintegration and micronutrient bioaccessibility. Food Res Int 2019; 128:108817. [PMID: 31955773 DOI: 10.1016/j.foodres.2019.108817] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [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: 06/19/2019] [Revised: 11/06/2019] [Accepted: 11/10/2019] [Indexed: 12/21/2022]
Abstract
Digestion is a mechanical and chemical process that is only partly understood, and even less so for complex foods. In particular, the issue of the impact of food structure on the digestion process is still unresolved. In this study, the fate of four micronutrient-enriched foods with identical compositions but different microstructures (Custard, Pudding, Sponge cake, Biscuit) was investigated using the 3-phase in vitro model of human digestion developed by the INFOGEST network. Matrix disintegration and hydrolysis of macronutrients (proteins, lipids and carbohydrates) were monitored during the three phases of digestion using biochemical techniques, size-exclusion chromatography, thin-layer chromatography and gas chromatography. Micronutrient release (vitamin B9 and lutein) was monitored using reverse-phase chromatography. Food structure did not greatly influence macronutrient hydrolysis, except for lipolysis that was four-times higher for Biscuit compared to Custard. However, the bioaccessibility of both micronutrients depended on the food structure and on the micronutrient. Vitamin B9 release was faster for Biscuit and Sponge cake during the gastric phase, whereas lutein release was higher for Custard during the intestinal step. Extensive statistical analysis highlighted the impact of food structure on the digestion process, with different digestion pathways depending on the food matrix. It also made it possible to characterise the gastric step as a predominantly macronutrient solubilisation phase, and the intestinal step as a predominantly hydrolysis phase.
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Affiliation(s)
- M Hiolle
- STLO, INRA, Agrocampus Ouest, 35042 Rennes, France.
| | | | - J Floury
- STLO, INRA, Agrocampus Ouest, 35042 Rennes, France.
| | | | - C Prioul
- Liot SAS, 86450 Pleumartin, France.
| | - D Dupont
- STLO, INRA, Agrocampus Ouest, 35042 Rennes, France.
| | - F Nau
- STLO, INRA, Agrocampus Ouest, 35042 Rennes, France.
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Lemaire M, Boudry G, Ménard O, Le Ruyet P, Baudry C, Gérard P, Dupont D, Deglaire A, Le Huërou-Luron I, Blat S. La matière grasse laitière et le probiotique L. fermentum incorporés dans des préparations pour nourrissons modulent leur digestion ainsi que la composition du microbiote et les propriétés barrière de l’intestin chez le mini-porc. NUTR CLIN METAB 2019. [DOI: 10.1016/j.nupar.2019.01.401] [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: 11/25/2022]
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Lorieau L, Halabi A, Ligneul A, Hazart E, Dupont D, Floury J. Développement de produits laitiers à destination des séniors : impact du type de protéines et de la structure de l’aliment sur l’hydrolyse des protéines. NUTR CLIN METAB 2018. [DOI: 10.1016/j.nupar.2018.09.190] [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: 10/27/2022]
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Dupont D, Normand AC, Persat F, Hendrickx M, Piarroux R, Wallon M. Comparison of matrix-assisted laser desorption ionization time of flight mass spectrometry (MALDI-TOF MS) systems for the identification of moulds in the routine microbiology laboratory. Clin Microbiol Infect 2018; 25:892-897. [PMID: 30394360 DOI: 10.1016/j.cmi.2018.10.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [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: 05/22/2018] [Revised: 09/27/2018] [Accepted: 10/13/2018] [Indexed: 11/17/2022]
Abstract
OBJECTIVES The purpose of this study was to compare the efficiency of mould identification of two matrix-assisted laser desorption ionization time of flight mass spectrometry (MALDI-TOF MS) systems - Vitek MS (VMS) and Microflex LT (MLT) - and the MSI application. METHODS Moulds were collected retrospectively and prospectively to display epidemiological diversity of a microbiology laboratory. All of them were identified via sequencing. Strains were then identified using the VMS v3.0, the MLT, and the MSI software applied on MLT spectra. Rates of correct identifications to the species, to the complex, and to the genus level were compared with the molecular reference standard. RESULTS A total of 102 isolates were collected. The rate of correct identification to the species level with the MLT was 42.2% (43/102) with a threshold of 1.7 (vs. 16.7% (17/102) with a threshold of 2.0, p < 0.05). The VMS performed better than the MLT with a threshold of 1.7 for species (49.0% (50/102), p 0.33) and complex level identifications (71.6% (73/102) vs. 54.9% (56/102), p < 0.05). However the highest performances were observed when the MLT spectra were analysed via the Mass Spectrometry Identification (MSI) software reaching 90.2% (92/102) of correct identification to the species, 92.2% (94/102) to the species complex and 94.1% (96/102) to the genus level. CONCLUSIONS The VMS performed better than the MLT for mould identification. However, it remains of utmost importance to expand commercial databases, as performances of the MLT highly improved when using the MSI software and its extended database, reaching far above the VMS system. Thus the VMS could benefit from the use of this online tool.
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Affiliation(s)
- D Dupont
- Institut des Agents Infectieux, Parasitologie Mycologie, Hôpital de la Croix-Rousse, Hospices Civils de Lyon, Lyon, France; Integrative Physiology of the Brain Arousal Systems, Centre de Recherche en Neurosciences de Lyon, INSERM U1028-CNRS UMR 5292, Faculté de Médecine, Université Claude Bernard Lyon 1, Lyon, France.
| | - A-C Normand
- Service de Parasitologie/Mycologie, Groupe Hospitalier Pitié-Salpêtrière, AP-HP, F-75013, Paris, France; Sorbonne Université, INSERM, Institut Pierre-Louis d'Epidémiologie et de Santé Publique, AP-HP, Hôpital Pitié-Salpêtrière, Paris, France
| | - F Persat
- Institut des Agents Infectieux, Parasitologie Mycologie, Hôpital de la Croix-Rousse, Hospices Civils de Lyon, Lyon, France
| | - M Hendrickx
- Mycology & Aerobiology, Scientific Institute of Public Health, Brussels, Belgium
| | - R Piarroux
- Service de Parasitologie/Mycologie, Groupe Hospitalier Pitié-Salpêtrière, AP-HP, F-75013, Paris, France; Sorbonne Université, INSERM, Institut Pierre-Louis d'Epidémiologie et de Santé Publique, AP-HP, Hôpital Pitié-Salpêtrière, Paris, France
| | - M Wallon
- Institut des Agents Infectieux, Parasitologie Mycologie, Hôpital de la Croix-Rousse, Hospices Civils de Lyon, Lyon, France; Integrative Physiology of the Brain Arousal Systems, Centre de Recherche en Neurosciences de Lyon, INSERM U1028-CNRS UMR 5292, Faculté de Médecine, Université Claude Bernard Lyon 1, Lyon, France
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Lorieau L, Halabi A, Ligneul A, Hazart E, Dupont D, Floury J. Impact of the dairy product structure and protein nature on the proteolysis and amino acid bioaccessiblity during in vitro digestion. Food Hydrocoll 2018. [DOI: 10.1016/j.foodhyd.2018.04.019] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Lorieau L, Septier C, Laguerre A, Le Roux L, Hazart E, Ligneul A, Famelart MH, Dupont D, Floury J, Feron G, Labouré H. Bolus quality and food comfortability of model cheeses for the elderly as influenced by their texture. Food Res Int 2018; 111:31-38. [DOI: 10.1016/j.foodres.2018.05.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 04/13/2018] [Accepted: 05/07/2018] [Indexed: 12/13/2022]
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Loeffert ST, Hénaff L, Dupont D, Bienvenu AL, Dananché C, Cassier P, Bénet T, Wallon M, Gustin MP, Vanhems P. Prospective survey of azole drug resistance among environmental and clinical isolates of Aspergillus fumigatus in a French University hospital during major demolition works. J Mycol Med 2018; 28:469-472. [PMID: 29853288 DOI: 10.1016/j.mycmed.2018.05.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [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: 12/21/2017] [Revised: 05/04/2018] [Accepted: 05/14/2018] [Indexed: 10/14/2022]
Abstract
OBJECTIVES Recent studies have reported the emerging worldwide problem of azole drug resistance of A. fumigatus isolates. The aim of this study was to evaluate the antifungal susceptibilities of A. fumigatus isolates recovered from air and clinical samples collected in a French University hospital (Lyon), which underwent major deconstruction works over a one year-period. METHODS A daily surveillance of fungal contamination was implemented during 11-months. Environmental survey was realized by air samplings, outdoor and indoor, with an automatic agar sampler. In parallel, surveillance of IA infection cases was conducted by epidemiological investigation. Environmental and clinical isolates of A. fumigatus were identified by conventional methods and β-tubulin sequencing. Susceptibility testing of A. fumigatus isolates against Itraconazole (ITZ), Voriconazole (VCZ) was performed using Etest method. RESULTS A total of 3885 air samples (1744 outdoor samples and 2141 indoor samples) were collected. From the 3073 identified colonies of A. fumigatus, 400 A. fumigatus isolates were tested for their susceptibility to ITZ and VCZ, including 388 isolates coming from the environment (indoor n:157, outdoor n:231) and 12 isolates coming from clinical samples. All the 400 isolates were susceptible to azoles (≤1μg/mL). CONCLUSIONS No environmental reservoir of A. fumigatus azole resistant strains was found in our hospital which was undergoing major demolition works. Further studies with larger number of A. fumigatus clinical isolates and environmental isolates from agricultural areas and healthcare establishments are needed to better appreciate the occurrence and prevalence of azole resistance.
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Affiliation(s)
- S T Loeffert
- Laboratoire des pathogènes emergents-fondation mérieux, centre international de recherche en infectiologie (CIRI), Inserm U1111, CNRS UMR5308, ENS de Lyon, université de Lyon 1, 69000 Lyon, France.
| | - L Hénaff
- Institut de parasitologie et de mycologie médicale, hôpital de la Croix-Rousse, 69000 Lyon, France
| | - D Dupont
- Institut de parasitologie et de mycologie médicale, hôpital de la Croix-Rousse, 69000 Lyon, France
| | - A-L Bienvenu
- Institut de parasitologie et de mycologie médicale, hôpital de la Croix-Rousse, 69000 Lyon, France
| | - C Dananché
- Laboratoire des pathogènes emergents-fondation mérieux, centre international de recherche en infectiologie (CIRI), Inserm U1111, CNRS UMR5308, ENS de Lyon, université de Lyon 1, 69000 Lyon, France; Unité d'hygiène, épidémiologie et prévention, groupement hospitalier centre, hospices civils de Lyon, 69000 Lyon, France
| | - P Cassier
- Laboratoire de biologie sécurité environnement, groupement hospitalier centre, hospices civils de Lyon, 69000 Lyon, France
| | - T Bénet
- Unité d'hygiène, épidémiologie et prévention, groupement hospitalier centre, hospices civils de Lyon, 69000 Lyon, France
| | - M Wallon
- Institut de parasitologie et de mycologie médicale, hôpital de la Croix-Rousse, 69000 Lyon, France
| | - M-P Gustin
- Département de santé publique, institut des sciences pharmaceutiques et biologiques (ISPB)-faculté de pharmacie, université Claude-Bernard Lyon 1, 69000 Lyon, France
| | - P Vanhems
- Laboratoire des pathogènes emergents-fondation mérieux, centre international de recherche en infectiologie (CIRI), Inserm U1111, CNRS UMR5308, ENS de Lyon, université de Lyon 1, 69000 Lyon, France; Unité d'hygiène, épidémiologie et prévention, groupement hospitalier centre, hospices civils de Lyon, 69000 Lyon, France
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Dupont D, Alric M, Blanquet-Diot S, Bornhorst G, Cueva C, Deglaire A, Denis S, Ferrua M, Havenaar R, Lelieveld J, Mackie AR, Marzorati M, Menard O, Minekus M, Miralles B, Recio I, Van den Abbeele P. Can dynamicin vitrodigestion systems mimic the physiological reality? Crit Rev Food Sci Nutr 2018; 59:1546-1562. [DOI: 10.1080/10408398.2017.1421900] [Citation(s) in RCA: 98] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- D. Dupont
- INRA Agrocampus Ouest, STLO, Rennes, France
| | - M. Alric
- Université Clermont Auvergne, Clermont-Ferrand, France
| | | | | | - C. Cueva
- CSIC Universidad Autonoma de Madrid, CIAL, Madrid, Spain
| | | | - S. Denis
- Université Clermont Auvergne, Clermont-Ferrand, France
| | - M. Ferrua
- Fonterra, Palmerston North, New Zealand
| | | | | | | | | | - O. Menard
- INRA Agrocampus Ouest, STLO, Rennes, France
| | | | - B. Miralles
- CSIC Universidad Autonoma de Madrid, CIAL, Madrid, Spain
| | - I. Recio
- CSIC Universidad Autonoma de Madrid, CIAL, Madrid, Spain
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Bohn T, Carriere F, Day L, Deglaire A, Egger L, Freitas D, Golding M, Le Feunteun S, Macierzanka A, Menard O, Miralles B, Moscovici A, Portmann R, Recio I, Rémond D, Santé-Lhoutelier V, Wooster TJ, Lesmes U, Mackie AR, Dupont D. Correlation between in vitro and in vivo data on food digestion. What can we predict with static in vitro digestion models? Crit Rev Food Sci Nutr 2017; 58:2239-2261. [DOI: 10.1080/10408398.2017.1315362] [Citation(s) in RCA: 128] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- T. Bohn
- Luxembourg Institute of Health, Strassen, Luxembourg
| | | | - L. Day
- Agresearch, Palmerston North, New Zealand
| | | | - L. Egger
- Agroscope, Institute for Food Sciences, Bern, Switzerland
| | | | - M. Golding
- Massey University, Palmerston North, New Zealand
| | | | | | | | | | - A. Moscovici
- Technion—Israel Institute of Technology, Haifa, Israel
| | - R. Portmann
- Agroscope, Institute for Food Sciences, Bern, Switzerland
| | | | | | | | - T. J. Wooster
- Nestlé Research Centre, Nestec S.A., Lausanne, Switzerland
| | - U. Lesmes
- Technion—Israel Institute of Technology, Haifa, Israel
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De Oliveira S, Ménard O, Bellanger A, Pladys P, Le Gouar Y, Henry G, Dirson E, Rousseau F, Carrière F, Dupont D, Bourlieu C, Deglaire A. Impact de l’homogénéisation du lait maternel pasteurisé sur les cinétiques de digestion gastrique chez le nouveau-né prématuré. NUTR CLIN METAB 2017. [DOI: 10.1016/j.nupar.2017.06.053] [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: 12/01/2022]
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17
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Deglaire A, Kroell F, De Oliveira S, Jardin J, Briard-Bion V, Emily M, Bellanger A, Pladys P, Ménard O, Bourlieu-Lacanal C, Dupont D. Impact de la pasteurisation du lait maternel sur les cinétiques de libération des peptides au cours de la digestion gastrique chez le nouveau-né prématuré. NUTR CLIN METAB 2017. [DOI: 10.1016/j.nupar.2017.06.054] [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: 10/18/2022]
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Nourrisson C, Dupont D, Lavergne RA, Dorin J, Forouzanfar F, Denis J, Weeks K, Joubert R, Chiambaretta F, Bourcier T, Roux S, Sénéchal A, Benaïm G, Wallon M, Candolfi E, Letscher-Bru V, Poirier P, Sabou M. Species of Metarhizium anisopliae complex implicated in human infections: retrospective sequencing study. Clin Microbiol Infect 2017; 23:994-999. [PMID: 28487164 DOI: 10.1016/j.cmi.2017.05.001] [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: 02/19/2017] [Revised: 04/17/2017] [Accepted: 05/01/2017] [Indexed: 11/30/2022]
Abstract
OBJECTIVES Fungi belonging to the Metarhizium anisopliae complex comprise ubiquitous arthropod pathogenic moulds used as mycopesticides. Rare cases of human infections due to M. anisopliae have been reported. We hypothesize misidentifications of fungal strains implicated in these cases or used in mycopesticides. METHODS A review of the literature was conducted to identify previously published cases. We collected some of these previous described strains and reported new cases, and a French mycopesticide containing M. anisopliae. All identifications were performed based on elongation factor-1α gene sequencing. RESULTS We report eight new cases of Metarhizium infection in humans (three from France and five from Australia). The strains isolated from these cases, and three others from already published cases and reported as M. anisopliae, were molecularly identified based on elongation factor-1α (Ef1-α) gene sequencing as follows: Metarhizium robertsii (six), Metarhizium guizhouense (three), Metarhizium brunneum (one) and Metarhizium pingshaense (one). CONCLUSIONS In this study, we report new human cases of Metarhizium infections, and, based on Ef-1α gene sequencing, we demonstrate the misidentification of species in case reports. We also correct the species identification of a strain reported as M. anisopliae used in a commercially available mycopesticide. According to our results, none of the strains from the human infection reports reviewed belongs to the species M. anisopliae.
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Affiliation(s)
- C Nourrisson
- Laboratoire de Parasitologie-Mycologie, CHU Clermont-Ferrand, Clermont-Ferrand, France; Université Clermont Auvergne, CNRS UMR 6023, Laboratoire Microorganismes: Génome et environnement (LMGE), Clermont-Ferrand, France.
| | - D Dupont
- Institut de Parasitologie et de Mycologie Médicale, Hospices Civils de Lyon, Lyon, France; Équipe WAKING, Physiologie intégrée du système d'éveil, centre de recherche en Neurosciences de Lyon Inserm U1028, CNRS UMR5292, université Claude Bernard Lyon I, Lyon, France
| | - R-A Lavergne
- Laboratoire de Parasitologie-Mycologie, Hôpitaux Universitaires de Nantes, Département de Mycologie Médicale, Universités Nantes Atlantique, EA1155-IICiMed, Institut de Recherche en Santé 2, Nantes, France
| | - J Dorin
- Structure de Parasitologie-Mycologie, Département de Microbiologie, Centre Hospitalo-Universitaire de Nancy, Hôpitaux de Brabois, Vandoeuvre-les-Nancy, France
| | - F Forouzanfar
- Laboratoire de Parasitologie et de Mycologie Médicale, Plateau Technique de Microbiologie, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - J Denis
- Laboratoire de Parasitologie et de Mycologie Médicale, Plateau Technique de Microbiologie, Hôpitaux Universitaires de Strasbourg, Strasbourg, France; Université de Strasbourg, Institut de Parasitologie et de Pathologie Tropicale, EA 7292, Fédération de Médecine Translationnelle, Strasbourg, France
| | - K Weeks
- NSW Health Pathology, Department of Microbiology, The Royal North Shore Hospital, Sydney, Australia
| | - R Joubert
- Service d'Ophtalmologie, CHU Clermont-Ferrand, F-63003 Clermont-Ferrand, France
| | - F Chiambaretta
- Service d'Ophtalmologie, CHU Clermont-Ferrand, F-63003 Clermont-Ferrand, France
| | - T Bourcier
- Service d'Ophtalmologie, Nouvel Hôpital Civil, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - S Roux
- Département de maladies infectieuses et tropicales, Hospices Civils de Lyon, Lyon, France
| | - A Sénéchal
- Service de pneumologie, hôpital Louis Pradel, Hospices Civils de Lyon, Lyon, France
| | - G Benaïm
- Service d'anatomie et cytologie pathologique, Hospices Civils de Lyon, Lyon, France
| | - M Wallon
- Institut de Parasitologie et de Mycologie Médicale, Hospices Civils de Lyon, Lyon, France; Équipe WAKING, Physiologie intégrée du système d'éveil, centre de recherche en Neurosciences de Lyon Inserm U1028, CNRS UMR5292, université Claude Bernard Lyon I, Lyon, France
| | - E Candolfi
- Laboratoire de Parasitologie et de Mycologie Médicale, Plateau Technique de Microbiologie, Hôpitaux Universitaires de Strasbourg, Strasbourg, France; Université de Strasbourg, Institut de Parasitologie et de Pathologie Tropicale, EA 7292, Fédération de Médecine Translationnelle, Strasbourg, France
| | - V Letscher-Bru
- Laboratoire de Parasitologie et de Mycologie Médicale, Plateau Technique de Microbiologie, Hôpitaux Universitaires de Strasbourg, Strasbourg, France; Université de Strasbourg, Institut de Parasitologie et de Pathologie Tropicale, EA 7292, Fédération de Médecine Translationnelle, Strasbourg, France
| | - P Poirier
- Laboratoire de Parasitologie-Mycologie, CHU Clermont-Ferrand, Clermont-Ferrand, France; Université Clermont Auvergne, CNRS UMR 6023, Laboratoire Microorganismes: Génome et environnement (LMGE), Clermont-Ferrand, France
| | - M Sabou
- Laboratoire de Parasitologie et de Mycologie Médicale, Plateau Technique de Microbiologie, Hôpitaux Universitaires de Strasbourg, Strasbourg, France; Université de Strasbourg, Institut de Parasitologie et de Pathologie Tropicale, EA 7292, Fédération de Médecine Translationnelle, Strasbourg, France
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Thévenot J, Cauty C, Legland D, Dupont D, Floury J. Pepsin diffusion in dairy gels depends on casein concentration and microstructure. Food Chem 2017; 223:54-61. [DOI: 10.1016/j.foodchem.2016.12.014] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Revised: 12/06/2016] [Accepted: 12/07/2016] [Indexed: 01/23/2023]
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20
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De-Oliveira S, Bourlieu C, Ménard O, Bellanger A, Carrière F, Dirson E, Le-Gouar Y, Pladys P, Dupont D, Deglaire A. Peut-on mimer la digestion gastrique du nouveau-né grâce à un modèle in vitro dynamique ? NUTR CLIN METAB 2017. [DOI: 10.1016/j.nupar.2016.10.038] [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: 11/25/2022]
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Kalra D, Stroetmann V, Sundgren M, Dupont D, Schlünder I, Thienpont G, Coorevits P, De Moor G. The European Institute for Innovation through Health Data. Learn Health Syst 2017; 1:e10008. [PMID: 31245550 PMCID: PMC6516723 DOI: 10.1002/lrh2.10008] [Citation(s) in RCA: 14] [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: 01/08/2016] [Revised: 03/22/2016] [Accepted: 04/13/2016] [Indexed: 01/25/2023] Open
Abstract
The European Institute for Innovation through Health Data (i~HD, www.i-hd.eu) has been formed as one of the key sustainable entities arising from the Electronic Health Records for Clinical Research (IMI-JU-115189) and SemanticHealthNet (FP7-288408) projects, in collaboration with several other European projects and initiatives supported by the European Commission. i~HD is a European not-for-profit body, registered in Belgium through Royal Assent. i~HD has been established to tackle areas of challenge in the successful scaling up of innovations that critically rely on high-quality and interoperable health data. It will specifically address obstacles and opportunities to using health data by collating, developing, and promoting best practices in information governance and in semantic interoperability. It will help to sustain and propagate the results of health information and communication technology (ICT) research that enables better use of health data, assessing and optimizing their novel value wherever possible. i~HD has been formed after wide consultation and engagement of many stakeholders to develop methods, solutions, and services that can help to maximize the value obtained by all stakeholders from health data. It will support innovations in health maintenance, health care delivery, and knowledge discovery while ensuring compliance with all legal prerequisites, especially regarding the insurance of patient's privacy protection. It is bringing multiple stakeholder groups together so as to ensure that future solutions serve their collective needs and can be readily adopted affordably and at scale.
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Affiliation(s)
- D. Kalra
- Department of Public Health, Unit of Medical Informatics and StatisticsGhent UniversityGentBelgium
| | - V. Stroetmann
- Empirica Gesellschaft für Kommunikations‐ und Technologieforschung mbHBonnGermany
| | | | - D. Dupont
- Data Mining InternationalGenevaSwitzerland
| | - I. Schlünder
- Technologie‐ und Methodenplattform für die vernetzte medizinische Forschung e.V.BerlinGermany
| | - G. Thienpont
- RAMIT, Research in Advanced Medical Informatics and Telematics (vzw ‐ asbl)Ghent University HospitalGentBelgium
| | - P. Coorevits
- Department of Public Health, Unit of Medical Informatics and StatisticsGhent UniversityGentBelgium
| | - G. De Moor
- Department of Public Health, Unit of Medical Informatics and StatisticsGhent UniversityGentBelgium
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Dupont D, Saison J, Miailhes P, Wallon M, Persat F. Atteinte oculaire chez un greffé cardiaque lors d’une aspergillose disséminée : intérêt des galactomannanes ? J Mycol Med 2016. [DOI: 10.1016/j.mycmed.2016.04.024] [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: 10/21/2022]
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Lemoine L, Dupont D, Capron A, Cerf E, Yilmaz M, Verloop D, Blanckaert B, Senneville E, Alfandari S. BPC-03 - Évaluation de la prise en charge des infections urinaires dans 134 EHPAD d’une région Française. Med Mal Infect 2016. [DOI: 10.1016/s0399-077x(16)30320-1] [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: 11/17/2022]
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Dupont D, Blanc M, Wallon M. Épidémiologie des sinusites fongiques au CHU de Lyon entre 2014 et 2015. J Mycol Med 2016. [DOI: 10.1016/j.mycmed.2016.04.059] [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: 11/25/2022]
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Dupont D, Nove Josserand R, Reynaud Q, Persat F, Wallon M, Durieu I. Myélite à Cladophialophora bantiana. J Mycol Med 2016. [DOI: 10.1016/j.mycmed.2016.04.058] [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: 10/21/2022]
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Alanio A, Gits-Muselli M, Calderon E, Di Cave D, Dupont D, Hamprecht A, Hauser P, Helweg-Larsen J, Kicia M, Lagrou K, Lengerova M, Matos O, Melchers W. European study on Pneumocystis jirovecii short tandem repeats genotyping reveals wide population diversity with geographic specificities. J Mycol Med 2016. [DOI: 10.1016/j.mycmed.2016.04.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Dupont D, Roux S, Benaïm G, Sénéchal A, Wallon M. Sinusite fongique due à Metarhizium anisopliae chez un transplanté monopulmonaire. J Mycol Med 2016. [DOI: 10.1016/j.mycmed.2016.04.060] [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: 10/21/2022]
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Dupont D, Tran V, Gardes S, Monfray J, Ducastelle-Lepretre S, Sobh M, Nicolini F, Ecochard R, Michallet M, Persat F. Antigènes aspergillaires chez les patients sous chimiothérapie pour leucémie myéloïde aiguë ou allogreffe de cellules souches hématopoïétiques : rôle dans la prédiction d’aspergillose invasive et dans la modification de la stratégie thérapeutique. J Mycol Med 2016. [DOI: 10.1016/j.mycmed.2016.04.061] [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: 10/21/2022]
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Rolet-Répécaud O, Arnould C, Dupont D, Gavoye S, Beuvier E, Achilleos C. Development and evaluation of a monoclonal antibody-based inhibition ELISA for the quantification of chymosin in solution. J Agric Food Chem 2015; 63:4799-4804. [PMID: 25905677 DOI: 10.1021/acs.jafc.5b00990] [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] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Chymosin is the major enzyme of natural rennet, traditionally used in cheese making for its high milk-clotting activity. For technical reasons, an accurate characterization of rennet should include its total clotting activity and also its enzymatic composition. Monoclonal antibodies specific to chymosin were obtained from mice immunized with purified bovine chymosin, and an inhibition enzyme-linked immunosorbent assay (ELISA) was developed for the quantification of chymosin in solution. No cross-reactivity was observed with other milk-clotting enzymes commonly used in cheese making. The limit of detection and limit of quantification were 125 and 400 ng/mL, respectively. The values of precision within and among runs were 7.23 and 7.39%, respectively, and satisfying recovery, from 92 to 119%, was found for spiked samples. The inhibition ELISA was successfully applied to commercial rennets, and the results were consistent with those obtained using the standard chromatographic method (IDF 110: A, 1987).
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Affiliation(s)
- O Rolet-Répécaud
- †INRA, UR342 Technologie et Analyses Laitières, F-39800 Poligny, France
| | - C Arnould
- †INRA, UR342 Technologie et Analyses Laitières, F-39800 Poligny, France
| | | | - S Gavoye
- ∥ACTALIA, F-25620 Mamirolle, France
| | - E Beuvier
- †INRA, UR342 Technologie et Analyses Laitières, F-39800 Poligny, France
| | - C Achilleos
- †INRA, UR342 Technologie et Analyses Laitières, F-39800 Poligny, France
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Dupont D, Geffriaud T, Boibieux A, Rimmele T, Picot S, Persat F. Galactomannan antigen and Aspergillus antibody responses in a transplant recipient with multiple invasive fungal infections. JMM Case Rep 2015. [DOI: 10.1099/jmmcr.0.000026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- D. Dupont
- Institut de Parasitologie et Mycologie Médicale, Hôpital de la Croix Rousse, Hospices Civils de Lyon, F‐69004 Lyon, France
| | - T. Geffriaud
- Intensive Care Unit Department, Pavillion P, Hôpital Edouard Herriot, Hospices Civils de Lyon, F‐69003 Lyon, France
| | - A. Boibieux
- Infectious Diseases Department, Hôpital de la Croix Rousse, Hospices Civils de Lyon, F‐69004 Lyon, France
| | - T. Rimmele
- Intensive Care Unit Department, Pavillion P, Hôpital Edouard Herriot, Hospices Civils de Lyon, F‐69003 Lyon, France
| | - S. Picot
- Malaria Research Unit, ICBMS, CNRS UMR 5246, Lyon I University, France
- Institut de Parasitologie et Mycologie Médicale, Hôpital de la Croix Rousse, Hospices Civils de Lyon, F‐69004 Lyon, France
| | - F. Persat
- EA 4169 Lyon I Claude Bernard University, France
- Institut de Parasitologie et Mycologie Médicale, Hôpital de la Croix Rousse, Hospices Civils de Lyon, F‐69004 Lyon, France
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Higel L, Froehlich C, Pages MP, Dupont D, Collardeau-Frachon S, Dijoud F, Cochat P, Belot A. Syndrome d’activation macrophagique et auto-immunité cortico-sensible révélateurs d’une leishmaniose viscérale. Arch Pediatr 2015; 22:397-400. [DOI: 10.1016/j.arcped.2014.11.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Accepted: 11/03/2014] [Indexed: 11/26/2022]
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Heiblig M, Bozzoli V, Saison J, Thomas X, De Croze D, Traverse-Glehen A, Cosmidis A, Chidiac C, Ferry T, Alanio A, Bienvenu AL, Dupont D, Ducastelle-Lepretre S, Michallet M, Ader F. Combined medico-surgical strategy for invasive sino-orbito-cerebral breakthrough fungal infection withHormographiella aspergillatain an acute leukaemia patient. Mycoses 2015; 58:308-12. [DOI: 10.1111/myc.12305] [Citation(s) in RCA: 8] [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: 10/25/2014] [Revised: 01/26/2015] [Accepted: 01/28/2015] [Indexed: 11/29/2022]
Affiliation(s)
- M. Heiblig
- Service d'Hématologie 1G; Centre Hospitalier Lyon Sud; Hospices Civils de Lyon; Pierre Bénite France
| | - V. Bozzoli
- Service d'Hématologie 1G; Centre Hospitalier Lyon Sud; Hospices Civils de Lyon; Pierre Bénite France
| | - J. Saison
- Service de Maladies Infectieuses et Tropicales; Hôpital de la Croix-Rousse; Hospices Civils de Lyon; Lyon France
| | - X. Thomas
- Service d'Hématologie 1G; Centre Hospitalier Lyon Sud; Hospices Civils de Lyon; Pierre Bénite France
| | - D. De Croze
- Laboratoire d'Anatomie et de cytopathologie; Centre Hospitalier Lyon Sud; Hospices Civils de Lyon; Pierre Bénite France
| | - A. Traverse-Glehen
- Laboratoire d'Anatomie et de cytopathologie; Centre Hospitalier Lyon Sud; Hospices Civils de Lyon; Pierre Bénite France
| | - A. Cosmidis
- Service d'Otorhinolaryngologie; Centre Hospitalier Lyon Sud; Hospices Civils de Lyon; Pierre Bénite France
| | - C. Chidiac
- Service de Maladies Infectieuses et Tropicales; Hôpital de la Croix-Rousse; Hospices Civils de Lyon; Lyon France
| | - T. Ferry
- Service de Maladies Infectieuses et Tropicales; Hôpital de la Croix-Rousse; Hospices Civils de Lyon; Lyon France
- Inserm U1111 Centre International de Recherche en Infectiologie (CIRI); Université Claude Bernard Lyon 1; Lyon France
| | - A. Alanio
- Service de Parasitologie-Mycologie; Groupe Hospitalier Lariboisière; Saint Louis Fernand Widal; Université Paris Diderot; Sorbonne Paris Cité; Paris France
- Institut Pasteur; Unité de Mycologie moléculaire; CNRS URA3012; Paris France
| | - A. L. Bienvenu
- Institut de Parasitologie et Mycologie Médicale; Hospices Civils de Lyon; Lyon France
- Malaria Research Unit; ICBMS; CNRS UMR 5246; Lyon 1 University; Lyon France
| | - D. Dupont
- Institut de Parasitologie et Mycologie Médicale; Hospices Civils de Lyon; Lyon France
| | - S. Ducastelle-Lepretre
- Service d'Hématologie 1G; Centre Hospitalier Lyon Sud; Hospices Civils de Lyon; Pierre Bénite France
| | - M. Michallet
- Service d'Hématologie 1G; Centre Hospitalier Lyon Sud; Hospices Civils de Lyon; Pierre Bénite France
| | - F. Ader
- Service de Maladies Infectieuses et Tropicales; Hôpital de la Croix-Rousse; Hospices Civils de Lyon; Lyon France
- Inserm U1111 Centre International de Recherche en Infectiologie (CIRI); Université Claude Bernard Lyon 1; Lyon France
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Beresniak A, Schmidt A, Proeve J, Bolanos E, Patel N, Ammour N, Sundgren M, Ericson M, De Moor G, Kalra D, Dupont D. Cost-Benefit Assessment of the Electronic Health Records for Clinical Research (EHR4CR) European Project. Value Health 2014; 17:A630. [PMID: 27202235 DOI: 10.1016/j.jval.2014.08.2251] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
- A Beresniak
- Data Mining International, Geneva, Switzerland
| | - A Schmidt
- F Hoffmann-La Roche Ltd, Basel, Switzerland
| | - J Proeve
- Bayer Healthcare, Leverkusen, Germany
| | - E Bolanos
- Eli Lilly and Company, Alcobendas, Spain
| | - N Patel
- Eli Lilly and Company (until December 2013), Windlesham, Surrey, UK
| | - N Ammour
- Sanofi-Aventis R&D, Chilly-Mazarin, France
| | | | | | | | - D Kalra
- The European Institute for Health Records (EuroRec), London, UK
| | - D Dupont
- Data Mining International, Geneva, Switzerland
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Gillet-Vittori L, Afanetti M, Dupont A, Gondon E, Dupont D. [Life-threatening Panton-Valentine leukocidin-associated staphylococcal infections in children. A broad spectrum of clinical presentations]. Arch Pediatr 2014; 21:1220-5. [PMID: 25284731 DOI: 10.1016/j.arcped.2014.08.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Revised: 05/08/2014] [Accepted: 08/01/2014] [Indexed: 11/26/2022]
Abstract
Panton-Valentine leukocidin (PVL) is a major toxic virulence factor secreted by community-acquired methicillin-sensitive or methicillin-resistant Staphylococcus aureus (SA). SA-PVL can be responsible for life-threatening infections in healthy children with a wide spectrum of clinical presentations involving lung, skin, and soft tissues or bones and joints. PVL production should always be considered in severe SA infections. The pediatric medicine community remains poorly informed regarding the therapeutic management of this infection, which should be early and aggressive. Intravenous empiric antibiotics against SA and its toxins must be given with early and sometimes iterative surgical procedures to drain abscesses and to stop bacterial proliferation and necrosis in the tissues. Here, we report the cases of three patients admitted for SA-PVL infections to the pediatric intensive care unit. Initial clinical presentation in the three patients was multifocal osteomyelitis associated with necrotizing pneumonia; severe skin infection with septic shock; and non-necrotic pneumonia with pleural and pericardial effusion. Appropriate treatments resulted in a good outcome in all cases. Following these illustrations, we describe a number of practical key points in the optimal medical and surgical management of severe SA-PVL infections, with a review of the literature.
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Affiliation(s)
- L Gillet-Vittori
- Service de réanimation pédiatrique, hôpitaux pédiatriques, CHU Lenval, 57, avenue de la Californie, 06000 Nice, France.
| | - M Afanetti
- Service de réanimation pédiatrique, hôpitaux pédiatriques, CHU Lenval, 57, avenue de la Californie, 06000 Nice, France
| | - A Dupont
- Service de réanimation pédiatrique, hôpitaux pédiatriques, CHU Lenval, 57, avenue de la Californie, 06000 Nice, France
| | - E Gondon
- Service de réanimation pédiatrique, hôpitaux pédiatriques, CHU Lenval, 57, avenue de la Californie, 06000 Nice, France
| | - D Dupont
- Service de réanimation pédiatrique, hôpitaux pédiatriques, CHU Lenval, 57, avenue de la Californie, 06000 Nice, France
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Minekus M, Alminger M, Alvito P, Ballance S, Bohn T, Bourlieu C, Carrière F, Boutrou R, Corredig M, Dupont D, Dufour C, Egger L, Golding M, Karakaya S, Kirkhus B, Le Feunteun S, Lesmes U, Macierzanka A, Mackie A, Marze S, McClements DJ, Ménard O, Recio I, Santos CN, Singh RP, Vegarud GE, Wickham MSJ, Weitschies W, Brodkorb A. A standardised static in vitro digestion method suitable for food - an international consensus. Food Funct 2014; 5:1113-24. [PMID: 24803111 DOI: 10.1039/c3fo60702j] [Citation(s) in RCA: 3176] [Impact Index Per Article: 317.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Simulated gastro-intestinal digestion is widely employed in many fields of food and nutritional sciences, as conducting human trials are often costly, resource intensive, and ethically disputable. As a consequence, in vitro alternatives that determine endpoints such as the bioaccessibility of nutrients and non-nutrients or the digestibility of macronutrients (e.g. lipids, proteins and carbohydrates) are used for screening and building new hypotheses. Various digestion models have been proposed, often impeding the possibility to compare results across research teams. For example, a large variety of enzymes from different sources such as of porcine, rabbit or human origin have been used, differing in their activity and characterization. Differences in pH, mineral type, ionic strength and digestion time, which alter enzyme activity and other phenomena, may also considerably alter results. Other parameters such as the presence of phospholipids, individual enzymes such as gastric lipase and digestive emulsifiers vs. their mixtures (e.g. pancreatin and bile salts), and the ratio of food bolus to digestive fluids, have also been discussed at length. In the present consensus paper, within the COST Infogest network, we propose a general standardised and practical static digestion method based on physiologically relevant conditions that can be applied for various endpoints, which may be amended to accommodate further specific requirements. A frameset of parameters including the oral, gastric and small intestinal digestion are outlined and their relevance discussed in relation to available in vivo data and enzymes. This consensus paper will give a detailed protocol and a line-by-line, guidance, recommendations and justifications but also limitation of the proposed model. This harmonised static, in vitro digestion method for food should aid the production of more comparable data in the future.
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Affiliation(s)
- M Minekus
- TNO, PO BOX 360, 3700AJ Zeist, The Netherlands.
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Le Huerou-Luron I, Bouzerzour K, Ferret-Bernard S, Le Bourgot C, Bourlieu C, Menard O, Morgan F, Cuinet I, Le Ruyet P, Bonhomme C, Dupont D. SFP PC-17 - La matière grasse laitière dans les formules infantiles modifie la digestion des protéines, le microbiote et la physiologie intestinale chez le porcelet nouveauné. Arch Pediatr 2014. [DOI: 10.1016/s0929-693x(14)72167-0] [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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Faudeux C, Dupont A, Gondon E, Brun J, Afanetti M, Dupont D. SFP P-102 - Une coqueluche maligne d’évolution favorable sous ECMO. Arch Pediatr 2014. [DOI: 10.1016/s0929-693x(14)72072-x] [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: 11/30/2022]
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Gillet-Vittori L, Afanetti M, Dupont A, Gondon E, Dupont D. SFP PC-41 - Encéphalite à anticorps anti-récepteurs NMDA : À propos d’un cas. Arch Pediatr 2014. [DOI: 10.1016/s0929-693x(14)72191-8] [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: 11/26/2022]
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Coorevits P, Sundgren M, Klein GO, Bahr A, Claerhout B, Daniel C, Dugas M, Dupont D, Schmidt A, Singleton P, De Moor G, Kalra D. Electronic health records: new opportunities for clinical research. J Intern Med 2013; 274:547-60. [PMID: 23952476 DOI: 10.1111/joim.12119] [Citation(s) in RCA: 157] [Impact Index Per Article: 14.3] [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] [Indexed: 12/31/2022]
Abstract
Clinical research is on the threshold of a new era in which electronic health records (EHRs) are gaining an important novel supporting role. Whilst EHRs used for routine clinical care have some limitations at present, as discussed in this review, new improved systems and emerging research infrastructures are being developed to ensure that EHRs can be used for secondary purposes such as clinical research, including the design and execution of clinical trials for new medicines. EHR systems should be able to exchange information through the use of recently published international standards for their interoperability and clinically validated information structures (such as archetypes and international health terminologies), to ensure consistent and more complete recording and sharing of data for various patient groups. Such systems will counteract the obstacles of differing clinical languages and styles of documentation as well as the recognized incompleteness of routine records. Here, we discuss some of the legal and ethical concerns of clinical research data reuse and technical security measures that can enable such research while protecting privacy. In the emerging research landscape, cooperation infrastructures are being built where research projects can utilize the availability of patient data from federated EHR systems from many different sites, as well as in international multilingual settings. Amongst several initiatives described, the EHR4CR project offers a promising method for clinical research. One of the first achievements of this project was the development of a protocol feasibility prototype which is used for finding patients eligible for clinical trials from multiple sources.
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Affiliation(s)
- P Coorevits
- Department of Medical Informatics and Statistics, Ghent University, Ghent, Belgium; The European Institute for Health Records (EuroRec), Sint-Martens-Latem, Belgium
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Bogaert-Buchmann A, Poittevin M, Po C, Dupont D, Sebrié C, Tomita Y, Trandinh A, Seylaz J, Pinard E, Méric P, Kubis N, Gillet B. Spatial and temporal MRI profile of ischemic tissue after the acute stages of a permanent mouse model of stroke. Open Neuroimag J 2013; 7:4-14. [PMID: 23459141 PMCID: PMC3580904 DOI: 10.2174/1874440001307010004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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: 06/20/2012] [Revised: 07/25/2012] [Accepted: 07/29/2012] [Indexed: 11/22/2022] Open
Abstract
OBJECT To characterize the progression of injured tissue resulting from a permanent focal cerebral ischemia after the acute phase, Magnetic Resonance Imaging (MRI) monitoring was performed on adult male C57BL/6J mice in the subacute stages, and correlated to histological analyses. MATERIAL AND METHODS Lesions were induced by electrocoagulation of the middle cerebral artery. Serial MRI measurements and weighted-images (T2, T1, T2* and Diffusion Tensor Imaging) were performed on a 9.4T scanner. Histological data (Cresyl-Violet staining and laminin-, Iba1- and GFAP-immunostainings) were obtained 1 and 2 weeks after the stroke. RESULTS Two days after stroke, tissues assumed to correspond to the infarct core, were detected as a hyperintensity signal area in T2-weighted images. One week later, low-intensity signal areas appeared. Longitudinal MRI study showed that these areas remained present over the following week, and was mainly linked to a drop of the T2 relaxation time value in the corresponding tissues. Correlation with histological data and immuno-histochemistry showed that these areas corresponded to microglial cells. CONCLUSION The present data provide, for the first time detailed MRI parameters of microglial cells dynamics, allowing its non-invasive monitoring during the chronic stages of a stroke. This could be particularly interesting in regards to emerging anti-inflammatory stroke therapies.
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Affiliation(s)
- A Bogaert-Buchmann
- University Orsay Paris-sud, IR4M, UMR 8081, Bat 220, Orsay, F-91405, France ; CNRS, Orsay, F-91405, France
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Beresniak A, Bertherat E, Perea W, Soga G, Souley R, Dupont D, Hugonnet S. A Bayesian network approach to the study of historical epidemiological databases: modelling meningitis outbreaks in the Niger. Bull World Health Organ 2012; 90:412-417A. [PMID: 22690030 PMCID: PMC3370359 DOI: 10.2471/blt.11.086009] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2011] [Revised: 12/05/2011] [Accepted: 12/05/2011] [Indexed: 11/27/2022] Open
Abstract
OBJECTIVE To develop a tool for evaluating the risk that an outbreak of meningitis will occur in a particular district of the Niger after outbreaks have been reported in other, specified districts of the country. METHODS A Bayesian network was represented by a graph composed of 38 nodes (one for each district in the Niger) connected by arrows. In the graph, each node directly influenced each of the "child" nodes that lay at the ends of the arrows arising from that node, according to conditional probabilities. The probabilities between "influencing" and "influenced" districts were estimated by analysis of databases that held weekly records of meningitis outbreaks in the Niger between 1986 and 2005. For each week of interest, each district was given a Boolean-variable score of 1 (if meningitis incidence in the district reached an epidemic threshold in that week) or 0. FINDINGS The Bayesian network approach provided important and original information, allowing the identification of the districts that influence meningitis risk in other districts (and the districts that are influenced by any particular district) and the evaluation of the level of influence between each pair of districts. CONCLUSION Bayesian networks offer a promising approach to understanding the dynamics of epidemics, estimating the risk of outbreaks in particular areas and allowing control interventions to be targeted at high-risk areas.
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Affiliation(s)
- A Beresniak
- Data Mining International, Route de l’Aeroport 29–31, CP 221, 1215 Geneva 15, Switzerland.
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Cimmino MA, Leardini G, Salaffi F, Intorcia M, Bellatreccia A, Dupont D, Beresniak A. Assessing the cost-effectiveness of biologic agents for the management of moderate-to-severe rheumatoid arthritis in anti-TNF inadequate responders in Italy: a modelling approach. Clin Exp Rheumatol 2011; 29:633-641. [PMID: 21813056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2010] [Accepted: 03/08/2011] [Indexed: 05/31/2023]
Abstract
OBJECTIVES The objective of this study is to assess cost-effectiveness of different biologic strategies in patients with moderate-to-severe active RA after an insufficient response to anti-TNF agents within the context of the Italian healthcare system. METHODS Simulation models were developed allowing for potential biologic therapy switch at each 6-month time point in case of an insufficient response to the previous biologic agent. Biologic treatments included etanercept, abatacept, adalimumab, rituximab or infliximab. Effectiveness criteria for these models were defined as achieving a state of low disease activity (LDAS) [DAS28 ≤3.2] or remission (RS) [DAS28<2.6]. Monte-Carlo simulations were performed for each sequence to manage data variability. RESULTS The biologic treatment sequence using abatacept after an insufficient response to a first anti-TNF agent appeared significantly more efficacious over 2 years (102 days in LDAS) compared to rituximab (82 days in LDAS). The sequence using abatacept after 2 anti-TNF agents appeared significantly more efficacious (63 days in LDAS) compared to using a third anti-TNF agent (32 days in LDAS). Mean cost-effectiveness ratios showed significantly lower costs per day in LDAS with abatacept used after one anti-TNF agent (€376) compared to rituximab (€456). The sequence using abatacept after 2 anti-TNF agents was also more cost-effective (€642 per day in LDAS) versus a sequential use of anti-TNF therapies (€1164 per day in LDAS). All comparisons were confirmed when using the remission effectiveness criteria. CONCLUSIONS The results of this health economics modelling study suggest that the biologic treatment sequence using abatacept after an insufficient response to a first anti-TNF agent appears significantly more effective and cost-effective versus a similar sequence using rituximab for achieving remission or LDAS. The results also indicate that in the case of an insufficient reponse to 2 anti-TNF agents, abatacept appears more effective and cost-effective than using a 3rd anti-TNF agent.
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Affiliation(s)
- M A Cimmino
- Department of Internal Medicine, University of Genoa, Genoa, Italy
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Salaün F, Bedek G, Devaux E, Dupont D, Gengembre L. Microencapsulation of a cooling agent by interfacial polymerization: Influence of the parameters of encapsulation on poly(urethane–urea) microparticles characteristics. J Memb Sci 2011. [DOI: 10.1016/j.memsci.2010.11.033] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Van Audenhaege M, Belmejdoub J, Dupont D, Chalvin A, Pezennec S, Le Gouar Y, Garnier-Lambrouin F, Rabiller-Baudry M, Gesan-Guiziou G. A methodology for monitoring globular milk protein changes induced by ultrafiltration: A dual structural and functional approach. J Dairy Sci 2010; 93:3910-24. [DOI: 10.3168/jds.2009-2995] [Citation(s) in RCA: 9] [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] [Received: 12/14/2009] [Accepted: 05/22/2010] [Indexed: 11/19/2022]
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Senocq D, Dupont D, Rolet-Répécaud O, Levieux D. Monoclonal Antibodies against Bovine β-Casein: Production and Epitope Characterization. FOOD AGR IMMUNOL 2010. [DOI: 10.1080/09540100120094483] [Citation(s) in RCA: 9] [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: 10/16/2022] Open
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Gibelin N, Dupont D, Imbert S, Rozet E. Use of Total Error concept in the validation of viral activity in cell cultures. J Chromatogr B Analyt Technol Biomed Life Sci 2009; 877:2407-11. [PMID: 19171505 DOI: 10.1016/j.jchromb.2009.01.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2008] [Revised: 01/05/2009] [Accepted: 01/08/2009] [Indexed: 11/17/2022]
Abstract
Due to the high variability inherent of experimental recipients, validating biological methods is often a complex exercise, and following ICH Q2R1 recommendations is not always feasible and/or meaningful. Linking systematic error and random error to obtain a unique criterion, as defined in ISO guideline, could be of interest to capture the total variability in biological assays. In this paper, the use of Total Error concept in the validation of biological assays was for the first time investigated and compared to a conventional interpretation of the ICH guideline. Both decision methodologies concluded that the assay was valid from 2.13 to 5.83 log(10)(CCID(50)/ml). However, only the Total Error approach using accuracy profile as decision tool allowed to guarantee that accurate and reliable results will be obtained during the future routine application of the assay. In addition, the risk to obtain out of acceptance limits results was estimated using this approach and was found out to be at the most 3.1% irrespective of the concentration level, thus demonstrating the reliability of the biological assay.
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Affiliation(s)
- N Gibelin
- Analytical Services, Global Quality, sanofi pasteur, 2 avenue pont Pasteur, 69367 Lyon cedex 07, France.
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Dupont D, Arnould C, Rolet-Repecaud O, Duboz G, Faurie F, Martin B, Beuvier E. Determination of bovine lactoferrin concentrations in cheese with specific monoclonal antibodies. Int Dairy J 2006. [DOI: 10.1016/j.idairyj.2005.09.012] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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De Moor GJE, Claerhout B, van Maele G, Dupont D. e-Health standardization in Europe: lessons learned. Stud Health Technol Inform 2004; 100:233-7. [PMID: 15718584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
Challenges regarding standardization in e-Health are analyzed, and solutions for ensuring their practical implementation are proposed. Emphasis is put on new mechanisms for enhancing the collaboration between the industry and standardization bodies.
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Affiliation(s)
- G J E De Moor
- Research in Advanced Medical Informatics/Telematics, University of Gent, Belgium
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Abstract
Two groups of 15 multiparous cows in mid-lactation were used in a Latin square design experiment with 4-week experimental periods. The genetic milk protein concentration level was high in the first group and low in the second. Each group of cows was given in a random order three feeding levels that covered 85, 100 and 115% of energy requirements and 90, 110 and 125% of nitrogen requirements, respeetively. In both groups, increasing level of feeding induced a significant increase in milk yield (+ 2.4 kg/d between lowest and highest levels) and in protein concentration (+ 1.7 g/kg). The proportion of paracasein in total proteins was not altered by either genetics or nutrition. The proportion of casein in total proteins was slightly increased by 0.5 percentage points (P < 0.05) with the intermediate level of feeding. Plasmin and plasminogen activities were not significantly modified by the genetic milk concentration level. Plasmin activity significantly increased with nutrient supplementation, but only in animals of low genetic potential (+ 21% between low and high levels, P < 0.01). Casein composition was not significantly altered by the genetics or level of nutrition. Over the whole range of individual measurements taken (n = 90), the relationships between casein or paracasein and total protein concentrations were linear and very narrow (R2 = 0.92 and 0.95, respectively). The proportion of casein or paracasein in total proteins significantly decreased as plasmin activity increased.
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Affiliation(s)
- J B Coulon
- Unité' de Recherches sur les Herbivores, INRA, Theix, Saint-Genès-Champanelle, France.
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