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Narvaez-Montoya C, Mahlknecht J, Torres-Martínez JA, Mora A, Bertrand G. Seawater intrusion pattern recognition supported by unsupervised learning: A systematic review and application. Sci Total Environ 2023; 864:160933. [PMID: 36566863 DOI: 10.1016/j.scitotenv.2022.160933] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 12/10/2022] [Accepted: 12/11/2022] [Indexed: 06/17/2023]
Abstract
Seawater intrusion is among the world's leading causes of groundwater contamination, as salty water can affect potable water access, food production, and ecosystem functions. To explore such contamination sources, multivariate analysis supported by unsupervised learning tools has been used for decades to aid in water resource pattern recognition, clustering, and water quality data variability characterization. This study proposes a systematic review of these techniques applied for supporting seawater intrusion identification based on the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement and subsequent bibliometric analysis of 102 coastal hydrogeological studies. The most relevant identified methods, including principal components analysis (PCA), hierarchical clustering analysis, K-means clustering, and self-organizing maps, are explained and applied to a case study. Although 74 % of the studies that applied dimensional reduction methods, such as PCA, associated most of the database variance with the salinization process, 77 % of the studies that applied clustering methods associated at least one water sample cluster with the influence of seawater intrusion. Based on the review and a practical demonstration using the open-source R software platform, recommendations are made regarding data preprocessing, research opportunities, and publishing information necessary to replicate and validate the studies.
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Affiliation(s)
- Christian Narvaez-Montoya
- Tecnologico de Monterrey, Escuela de Ingenieria y Ciencias, Eugenio Garza Sada 2501, Monterrey 64849, Nuevo Leon, Mexico
| | - Jürgen Mahlknecht
- Tecnologico de Monterrey, Escuela de Ingenieria y Ciencias, Eugenio Garza Sada 2501, Monterrey 64849, Nuevo Leon, Mexico.
| | - Juan Antonio Torres-Martínez
- Tecnologico de Monterrey, Escuela de Ingenieria y Ciencias, Eugenio Garza Sada 2501, Monterrey 64849, Nuevo Leon, Mexico
| | - Abrahan Mora
- Tecnologico de Monterrey, Escuela de Ingenieria y Ciencias, Campus Puebla, Atlixcáyotl 5718, Reserva Territorial Atlixcáyotl, Puebla 72453, Mexico
| | - Guillaume Bertrand
- University of Bourgogne Franche-Comté, UMR UFC CNRS 6249 Chrono-Environnement, 16 route de Gray 25000 Besançon, 4 Place Tharradin, 25200 Montbéliard, France; Federal University of Paraiba, Department of Civil and Environmental Engineering, João Pessoa 58051-900, Brazil
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Bertrand G, Petelet-Giraud E, Cary L, Hirata R, Montenegro S, Paiva A, Mahlknecht J, Coelho V, Almeida C. Delineating groundwater contamination risks in southern coastal metropoles through implementation of geochemical and socio-environmental data in decision-tree and geographical information system. Water Res 2022; 209:117877. [PMID: 34864620 DOI: 10.1016/j.watres.2021.117877] [Citation(s) in RCA: 1] [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] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 11/12/2021] [Accepted: 11/15/2021] [Indexed: 06/13/2023]
Abstract
Due to global warming and local anthropogenic pressures, sustainable groundwater resource exploitation in coastal cities is increasingly threatened. For example, the fifth largest Brazilian city, Recife, is considered as a representative hot spot for these issues and illustrates the great challenges facing many urban areas in the southern hemisphere. There, recharge as well as surface water and groundwater quality are altered by frequent droughts and poorly planned environmental management since decades. To maintain access to water, thousands of private wells were dug in order to pump water from the multi-layered aquifer system found under the city. This massive exploitation is causing a chronic lowering of the water levels, as well as seawater intrusion and contaminations by wastewater or polluted surface waters. Through hydrochemical characterization, mainly Cl/Br ratio and Cl concentrations, of wells sampled throughout the metropole, this study first characterizes the main environmental impacts on the resource, i.e. waste waters and seawater. Combining this evaluation with lithological, land-use and socio-environmental data, it was then possible to build decision trees identifying combinations of multiple factors possibly having an impact on contamination types. The well and population densities, the waste and sewage management, as well as the absence of sanitary facilities in houses appeared as critical parameters to target in order to reduce the risk of contamination of the water resource and ensure its preservation. Based on these factors, we created a risk map for contamination types that should help in identifying areas where groundwater resource may present an environmental (and then health) issue for people. Besides, this study shows that the combination of hydrochemical, geomorphological and socio-environmental characterizations of these urban systems featuring very contrasted situations between neighborhoods is a relevant tool to propose further groundwater management strategies.
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Affiliation(s)
- Guillaume Bertrand
- UMR 6249, UFC/CNRS Chrono-Environnement, University of Bourgogne Franche-Comté, 4 place Tharradin, 25200 Montbéliard; 16 route de Gray, 25000 Besançon, France.
| | | | - Lise Cary
- BRGM, French Geological Survey, 3 Av. C. Guillemin, 45060 Orléans , France
| | - Ricardo Hirata
- CEPAS, Institute of Geosciences, University of São Paulo, 05508-080 São Paulo, Brazil
| | | | - Anderson Paiva
- Department of Civil Engineering, UFPE, 50740 Recife, Brazil
| | - Jürgen Mahlknecht
- Escuela de Ingeniería y Ciencias, Tecnológico de Monterrey, Campus Monterrey, Eugenio Garza Sada 2501, Monterrey, 64149 Nuevo León, Mexico
| | - Victor Coelho
- Department of Geosciences, Federal University of Paraíba, 58051-900 Joao Pessoa, Brazil
| | - Cristiano Almeida
- Water Resources and Environmental Engineering Laboratory, Federal University of Paraíba, 58051-900 Joao Pessoa, Brazil
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Mora A, Torres-Martínez JA, Moreau C, Bertrand G, Mahlknecht J. Mapping salinization and trace element abundance (including As and other metalloids) in the groundwater of north-central Mexico using a double-clustering approach. Water Res 2021; 205:117709. [PMID: 34601358 DOI: 10.1016/j.watres.2021.117709] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [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: 06/14/2021] [Revised: 09/16/2021] [Accepted: 09/21/2021] [Indexed: 06/13/2023]
Abstract
This study aimed to determine the reliability of the double-clustering method to understand the spatial association and distribution of major and minor constituents in the groundwater of an arid endorheic basin in central Mexico (Comarca Lagunera Region). The results of the double-clustering approach were compared with well-known spatial statistics such as spatial autocorrelations (Moran index) and the local indicator of spatial association (LISA). Fifty-five groundwater samples were collected from diverse wells within the basin, and the major ions, metalloids, and trace elements were determined. Overall, the double-clustering analysis was an effective tool for identifying lithogenic/anthropogenic processes occurring in the basin and for establishing zones with high or low abundance of major ions and trace elements, even where processes affecting the groundwater quality were spatially dispersed. Although 89% of the samples showed As higher than the threshold value of 10 μg/L proposed by the World Health Organization for drinking water, both the double-clustering and LISA analyses identified As hotspots in the alluvial aquifer, where the extraction of deeper and warmer groundwater might promote the concomitant release of the metalloids As, Sb, and Ge and the trace elements V and W. Similarly, both statistical analyses identified mountainous sectors where the weathering of silicates and carbonates plays a key role in the abundance of HCO3-, Ga, and Ba. However, the LISA analysis failed to identify hotspots of carbonate-derived elements such as Ca, Mg, Sr, and U and silicate-derived elements such as Ca, Mg, K, Sr, Rb, Cs, Pb, Ni, and Y. Otherwise, the double-clustering analysis clearly defined high- and low-concentration zones for all these elements in the study region. Unlike the LISA analysis, the double-clustering approach was also successful in determining alluvial areas with high concentrations of Si and Ti and areas where the concentrations of Na, Cl-, SO42-, NO3-, B, Li, Cu, Re, and Se in groundwater were elevated, increasing the groundwater salinity. Overall, this study demonstrated that the double-clustering is an easy-to-apply approach, capable of visualizing disperse zones where specific anthropogenic processes may threaten the groundwater quality.
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Affiliation(s)
- Abrahan Mora
- Escuela de Ingeniería y Ciencias, Tecnológico de Monterrey, Campus Puebla, Atlixcáyotl 5718, Puebla de Zaragoza, 72453, Puebla, Mexico
| | - Juan Antonio Torres-Martínez
- Escuela de Ingeniería y Ciencias, Tecnológico de Monterrey, Campus Monterrey, Eugenio Garza Sada 2501, Monterrey, 64849, Nuevo León, Mexico
| | - Cristina Moreau
- Facultad de Ingeniería Civil, Universidad Autónoma de Nuevo León, Av. Universidad, San Nicolás de Los Garza, Nuevo León, Mexico
| | - Guillaume Bertrand
- University of Bourgogne Franche-Comté, UMR UFC CNRS 6249 Chrono-Environnement, 16 route de Gray 25000 Besançon, 4 place Tharradin, 25200 Montbéliard, France
| | - Jürgen Mahlknecht
- Escuela de Ingeniería y Ciencias, Tecnológico de Monterrey, Campus Monterrey, Eugenio Garza Sada 2501, Monterrey, 64849, Nuevo León, Mexico.
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Bertrand G. [Management of high-risk pregnancies in a context of maternal antiplatelet alloimmunization: Expert opinion of the French-speaking working group]. Transfus Clin Biol 2021; 28:370-374. [PMID: 34464715 DOI: 10.1016/j.tracli.2021.08.349] [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: 07/20/2021] [Accepted: 08/25/2021] [Indexed: 11/16/2022]
Abstract
INTRODUCTION Fetal and neonatal alloimmune thrombocytopenia (FNAIT) is a potentially devastating disease, seen in 1/800-1000 neonates. FNAIT is the most common cause of early-onset isolated severe neonatal thrombocytopenia in maternity wards. A working group on fetomaternal platelet alloimmunization was created in 2017, under the auspices on the French Group of Thrombosis and Hemostasis (GFHT). OBJECTIVES The objective was to survey clinical practices for management of high-risk pregnancies in a context of suspected or confirmed FNAIT. METHODS Recommendations published by the ICTMG were translated in French, and discussed (Fetal and neonatal alloimmune thrombocytopenia: recommendations for evidence-based practice, an international approach. British J of Haematology, 2019, 185, 549-562). RESULTS The study involved centers from France, Switzerland and Belgium: Angers, Besançon, Bordeaux, Brest, Créteil/Clamart, Genève, Grenoble, Liège, Lille, Lyon, Marseille, Nantes, Nîmes, Paris (hôpitaux Necker, Robert Debré et Trousseau), Poitiers, Rennes, Saint-Etienne, Strasbourg, Toulouse, Tours. CONCLUSIONS Expert opinion was validated on September 23, 2020 (consensus≥90%).
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Affiliation(s)
- G Bertrand
- Laboratoire HLA-HPA, EFS Bretagne, rue Pierre-Jean-Gineste, BP 91614, 35016 Rennes cedex, France.
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- Laboratoire HLA-HPA, EFS Bretagne, rue Pierre-Jean-Gineste, BP 91614, 35016 Rennes cedex, France
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Bertrand G, Ponçot A, Pohl B, Lhosmot A, Steinmann M, Johannet A, Pinel S, Caldirak H, Artigue G, Binet P, Bertrand C, Collin L, Magnon G, Gilbert D, Laggoun-Deffarge F, Toussaint ML. Statistical hydrology for evaluating peatland water table sensitivity to simple environmental variables and climate changes application to the mid-latitude/altitude Frasne peatland (Jura Mountains, France). Sci Total Environ 2021; 754:141931. [PMID: 33254862 DOI: 10.1016/j.scitotenv.2020.141931] [Citation(s) in RCA: 2] [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] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 07/30/2020] [Accepted: 08/22/2020] [Indexed: 06/12/2023]
Abstract
Peatlands are habitats for a range of fragile flora and fauna species. Their eco-physicochemical characteristics make them as outstanding global carbon and water storage systems. These ecosystems occupy 3% of the worldwide emerged land surface but represent 30% of the global organic soil carbon and 10% of the global fresh water volumes. In such systems, carbon speciation depends to a large extent on specific redox conditions which are mainly governed by the depth of the water table. Hence, understanding their hydrological variability, that conditions both their ecological and biogeochemical functions, is crucial for their management, especially when anticipating their future evolution under climate change. This study illustrates how long-term monitoring of basic hydro-meteorological parameters combined with statistical modeling can be used as a tool to evaluate i) the horizontal (type of peat), ii) vertical (acrotelm/catotelm continuum) and iii) future hydrological variability. Using cross-correlations between meteorological data (precipitation, potential evapotranspiration) and water table depth (WTD), we primarily highlight the spatial heterogeneity of hydrological reactivity across the Sphagnum-dominated Frasne peatland (French Jura Mountain). Then, a multiple linear regression model allows performing hydrological projections until 2100, according to regionalized IPCC RCP4.5 and 8.5 scenarios. Although WTD remains stable during the first half of 21th century, seasonal trends beyond 2050 show lower WTD in winter and markedly greater WTD in summer. In particular, after 2050, more frequent droughts in summer and autumn should occur, increasing WTD. These projections are completed with risk evaluations for peatland droughts until 2100 that appear to be increasing especially for transition seasons, i.e. May-June and September-October. Comparing these trends with previous evaluations of phenol concentrations in water throughout the vegetative period, considered as a proxy of plant functioning intensity, highlights that these hydrological modifications during transitional seasons could be a great ecological perturbation, especially by affecting Sphagnum metabolism.
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Affiliation(s)
- Guillaume Bertrand
- University of Bourgogne Franche-Comté, UMR UFC CNRS 6249 Chrono-Environnement, 1- route de Gray 25000 Besançon, 4 place Tharradin, 25200 Montbéliard, France.
| | - Alex Ponçot
- University of Bourgogne Franche-Comté, UMR UFC CNRS 6249 Chrono-Environnement, 1- route de Gray 25000 Besançon, 4 place Tharradin, 25200 Montbéliard, France.
| | - Benjamin Pohl
- Biogéosciences, UMR6282 CNRS, University of Bourgogne Franche-Comté, 6 boulevard Gabriel, F-21000 Dijon, France
| | - Alexandre Lhosmot
- University of Bourgogne Franche-Comté, UMR UFC CNRS 6249 Chrono-Environnement, 1- route de Gray 25000 Besançon, 4 place Tharradin, 25200 Montbéliard, France
| | - Marc Steinmann
- University of Bourgogne Franche-Comté, UMR UFC CNRS 6249 Chrono-Environnement, 1- route de Gray 25000 Besançon, 4 place Tharradin, 25200 Montbéliard, France
| | - Anne Johannet
- IMT Mines Ales, 8, rue Jules Renard, 30319 Alès cedex, France
| | - Sébastien Pinel
- IMT Mines Ales, 8, rue Jules Renard, 30319 Alès cedex, France
| | | | | | - Philippe Binet
- University of Bourgogne Franche-Comté, UMR UFC CNRS 6249 Chrono-Environnement, 1- route de Gray 25000 Besançon, 4 place Tharradin, 25200 Montbéliard, France
| | - Catherine Bertrand
- University of Bourgogne Franche-Comté, UMR UFC CNRS 6249 Chrono-Environnement, 1- route de Gray 25000 Besançon, 4 place Tharradin, 25200 Montbéliard, France
| | - Louis Collin
- EPAGE Syndicat Mixte Haut-Doubs Haute-Loue, 3 rue de la gare, 25560 Frasne, France
| | - Geneviève Magnon
- EPAGE Syndicat Mixte Haut-Doubs Haute-Loue, 3 rue de la gare, 25560 Frasne, France
| | - Daniel Gilbert
- University of Bourgogne Franche-Comté, UMR UFC CNRS 6249 Chrono-Environnement, 1- route de Gray 25000 Besançon, 4 place Tharradin, 25200 Montbéliard, France
| | | | - Marie-Laure Toussaint
- University of Bourgogne Franche-Comté, UMR UFC CNRS 6249 Chrono-Environnement, 1- route de Gray 25000 Besançon, 4 place Tharradin, 25200 Montbéliard, France
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Ribault S, Rippert P, Genod DV, Barrière A, Berruyer A, Garde C, Bernard M, Bertrand G, Tinat M, Crépin P, Naffrechoux M, Allara A, Morel D, Goff LL, Vuillerot C. OUTCOME MEASURES. Neuromuscul Disord 2020. [DOI: 10.1016/j.nmd.2020.08.246] [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: 11/15/2022]
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Gabriel D, Chabin T, Joucla C, Bussière T, Tarka A, Galmes N, Comte A, Bertrand G, Giustiniani J, Haffen E. An Artistic Approach to Neurofeedback for Emotion Regulation. NR 2020. [DOI: 10.15540/nr.7.2.84] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Pons C, Barrière A, Bertrand G, Morard MD, Lilien C, Vuillerot C. [French adaptation of motor function scales for patients with spinal muscular atrophy]. Med Sci (Paris) 2019; 35 Hors série n° 2:24-28. [PMID: 31859627 DOI: 10.1051/medsci/2019189] [Citation(s) in RCA: 2] [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] [Indexed: 01/15/2023] Open
Abstract
À l’heure des nouvelles thérapeutiques chez les personnes présentant une amyotrophie spinale antérieure ou spinal muscular atrophy (SMA), la mesure régulière, précise et fiable des capacités motrices est devenue indispensable. Différents outils ont été développés dans la littérature et peuvent être utilisés pour cela. Le choix d’une échelle/ d’un outil se fait en fonction du type de SMA, de l’âge de la personne et des éléments spécifiques de la motricité que l’on souhaite évaluer. En France, l’échelle MFM est utilisée en pratique clinique dans de nombreux centres de référence de Maladies Neuromusculaires (MNM). Les autres échelles fréquemment utilisées au niveau international ne sont cependant pas disponibles en français rendant leur utilisation plus difficile en pratique clinique courante.
Cet article présente le processus de traduction en français des échelles les plus fréquemment utilisées chez la personne avec SMA (CHOP INTEND, HFMSE, RULM, 6-minute walk test et HINE-2). Différentes étapes ont été respectées, notamment les étapes de traduction en français, traduction inversée en anglais, comparaison des versions anglaises, harmonisation et obtention de la version finale en français.
Un programme de formation et sensibilisation des différents professionnels des consultations MNM des centres de référence français avec proposition d’ateliers en présence des membres du comité scientifique suivra l’étape de traduction afin de les faire connaître, expliciter leur utilisation et participer à la diffusion de ce travail.
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Affiliation(s)
- Christelle Pons
- Département de MPR enfant, Fondation ILDYS, Brest, Bretagne, France Centre de Référence des Maladies Neuromusculaires, CHRU de Brest Bretagne, France
| | - Aurélie Barrière
- Service de Médecine Physique et Réadaptation Pédiatrique L'Escale, CHU de Lyon, Université de Lyon, France
| | - Guillaume Bertrand
- Service de Médecine Physique et Réadaptation Pédiatrique L'Escale, CHU de Lyon, Université de Lyon, France
| | - Marie-Doriane Morard
- Service de Médecine Physique et Réadaptation Pédiatrique L'Escale, CHU de Lyon, Université de Lyon, France
| | | | - Carole Vuillerot
- Service de Médecine Physique et Réadaptation Pédiatrique L'Escale, CHU de Lyon, Université de Lyon, France
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Awwad F, Bertrand G, Grandbois M, Beaudoin N. Auxin protects Arabidopsis thaliana cell suspension cultures from programmed cell death induced by the cellulose biosynthesis inhibitors thaxtomin A and isoxaben. BMC Plant Biol 2019; 19:512. [PMID: 31752698 PMCID: PMC6873746 DOI: 10.1186/s12870-019-2130-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Accepted: 11/11/2019] [Indexed: 05/22/2023]
Abstract
BACKGROUND Thaxtomin A (TA) is a natural cellulose biosynthesis inhibitor (CBI) synthesized by the potato common scab-causing pathogen Streptomyces scabies. Inhibition of cellulose synthesis by TA compromises cell wall organization and integrity, leading to the induction of an atypical program of cell death (PCD). These processes may facilitate S. scabies entry into plant tissues. To study the mechanisms that regulate the induction of cell death in response to inhibition of cellulose synthesis, we used Arabidopsis thaliana cell suspension cultures treated with two structurally different CBIs, TA and the herbicide isoxaben (IXB). RESULTS The induction of cell death by TA and IXB was abrogated following pretreatment with the synthetic auxin 2,4-dichlorophenoxyacetic acid (2,4-D) and the natural auxin indole-3-acetic acid (IAA). The addition of auxin efflux inhibitors also inhibited the CBI-mediated induction of PCD. This effect may be due to intracellular accumulation of auxin. Auxin has a wide range of effects in plant cells, including a role in the control of cell wall composition and rigidity to facilitate cell elongation. Using Atomic Force Microscopy (AFM)-based force spectroscopy, we found that inhibition of cellulose synthesis by TA and IXB in suspension-cultured cells decreased cell wall stiffness to a level slightly different than that caused by auxin. However, the cell wall stiffness in cells pretreated with auxin prior to CBI treatment was equivalent to that of cells treated with auxin only. CONCLUSIONS Addition of auxin to Arabidopsis cell suspension cultures prevented the TA- and IXB-mediated induction of cell death. Cell survival was also stimulated by inhibition of polar auxin transport during CBI-treatment. Inhibition of cellulose synthesis perturbed cell wall mechanical properties of Arabidopsis cells. Auxin treatment alone or with CBI also decreased cell wall stiffness, showing that the mechanical properties of the cell wall perturbed by CBIs were not restored by auxin. However, since auxin's effects on the cell wall stiffness apparently overrode those induced by CBIs, we suggest that auxin may limit the impact of CBIs by restoring its own transport and/or by stabilizing the plasma membrane - cell wall - cytoskeleton continuum.
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Affiliation(s)
- Fatima Awwad
- Centre SÈVE, Département de biologie, Université de Sherbrooke, Sherbrooke, Québec, J1K 2R1, Canada
- Present address: Groupe de Recherche en Biologie végétale, Département de chimie, biochimie et physique, Université du Québec à Trois-Rivières, Trois-Rivières, Québec, G9A 5H7, Canada
| | - Guillaume Bertrand
- Institut de Pharmacologie de Sherbrooke, Département de pharmacologie et physiologie, Université de Sherbrooke, Sherbrooke, Québec, J1H 5N4, Canada
| | - Michel Grandbois
- Institut de Pharmacologie de Sherbrooke, Département de pharmacologie et physiologie, Université de Sherbrooke, Sherbrooke, Québec, J1H 5N4, Canada
| | - Nathalie Beaudoin
- Centre SÈVE, Département de biologie, Université de Sherbrooke, Sherbrooke, Québec, J1K 2R1, Canada.
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Awwad F, Bertrand G, Grandbois M, Beaudoin N. Reactive Oxygen Species Alleviate Cell Death Induced by Thaxtomin A in Arabidopsis thaliana Cell Cultures. Plants (Basel) 2019; 8:E332. [PMID: 31489878 PMCID: PMC6784117 DOI: 10.3390/plants8090332] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 08/26/2019] [Accepted: 09/03/2019] [Indexed: 01/20/2023]
Abstract
Thaxtomin A (TA) is a cellulose biosynthesis inhibitor synthesized by the soil actinobacterium Streptomyces scabies, which is the main causal agent of potato common scab. TA is essential for the induction of scab lesions on potato tubers. When added to Arabidopsis thaliana cell cultures, TA induces an atypical programmed cell death (PCD). Although production of reactive oxygen species (ROS) often correlates with the induction of PCD, we observed a decrease in ROS levels following TA treatment. We show that this decrease in ROS accumulation in TA-treated cells is not due to the activation of antioxidant enzymes. Moreover, Arabidopsis cell cultures treated with hydrogen peroxide (H2O2) prior to TA treatment had significantly fewer dead cells than cultures treated with TA alone. This suggests that H2O2 induces biochemical or molecular changes in cell cultures that alleviate the activation of PCD by TA. Investigation of the cell wall mechanics using atomic force microscopy showed that H2O2 treatment can prevent the decrease in cell wall rigidity observed after TA exposure. While we cannot exclude the possibility that H2O2 may promote cell survival by altering the cellular redox environment or signaling pathways, our results suggest that H2O2 may inhibit cell death, at least partially, by reinforcing the cell wall to prevent or compensate for damages induced by TA.
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Affiliation(s)
- Fatima Awwad
- Centre SÈVE, Département de Biologie, Université de Sherbrooke, Sherbrooke, QC J1K 2R1, Canada.
- Groupe de Recherche en Biologie Végétale, Département de Chimie, Biochimie et Physique, Université du Québec à Trois-Rivières, Trois-Rivières, QC G9A 5H7, Canada.
| | - Guillaume Bertrand
- Institut de Pharmacologie de Sherbrooke, Département de Pharmacologie et Physiologie, Université de Sherbrooke, Sherbrooke, QC J1H 5N4, Canada.
| | - Michel Grandbois
- Institut de Pharmacologie de Sherbrooke, Département de Pharmacologie et Physiologie, Université de Sherbrooke, Sherbrooke, QC J1H 5N4, Canada.
| | - Nathalie Beaudoin
- Centre SÈVE, Département de Biologie, Université de Sherbrooke, Sherbrooke, QC J1K 2R1, Canada.
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Bertrand G, Blouin L, Boehlen F, Levine E, Minon JM, Winer N. Management of neonatal thrombocytopenia in a context of maternal antiplatelet alloimmunization: Expert opinion of the French-speaking working group. Arch Pediatr 2019; 26:191-197. [PMID: 30827773 DOI: 10.1016/j.arcped.2019.02.006] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 12/13/2018] [Accepted: 02/03/2019] [Indexed: 01/07/2023]
Abstract
Fetal and neonatal alloimmune thrombocytopenia (FNAIT) is a potentially devastating disease, seen in 1/800-1000 neonates. FNAIT is the most common cause of early-onset isolated severe neonatal thrombocytopenia in maternity wards. The most feared complication of this disorder is intracranial hemorrhage, leading to death or neurological sequelae. There is no systematic screening of at-risk pregnancies and FNAIT is often discovered when fetal or neonatal bleeding is observed. A working group on fetomaternal platelet alloimmunization was created in 2017, under the auspices on the French Group of Thrombosis and Hemostasis (GFHT). The first objective of this group was to survey clinical practices for treatment of thrombocytopenic neonates in a context of suspected or confirmed FNAIT.
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Affiliation(s)
- G Bertrand
- laboratoire HLA-HPA, Établissement français du sang (EFS) Bretagne, rue Pierre-Jean-Gineste, BP 91614, 35016 Rennes cedex, France.
| | - L Blouin
- Laboratoire d'immunologie et immunogénétique, EFS Nouvelle Aquitaine, CHU de Bordeaux, place Amélie-Léon, 33076 Bordeaux cedex, France
| | - F Boehlen
- Service d'angiologie et d'hémostase, hôpitaux universitaires de Genève, 4, rue Gabrielle-Perret-Gentil, 1211 Genève 14, Switzerland
| | - E Levine
- Service de néonatologie soins intensifs, hôpital universitaire de Rennes, 16, boulevard de Bulgarie, 35000 Rennes, France
| | - J-M Minon
- Unité d'hémostase et de transfusion, département de médecine de laboratoire, centre hospitalier régional de la Citadelle, boulevard du XXII(e)-de-Ligne, 4000 Liège, Belgium
| | - N Winer
- INRA, UMR 1280, département de gynécologie et d'obstétrique, physiologie des adaptations nutritionnelles, hôpital universitaire de Nantes, 38, boulevard Jean-Monnet, 44093 Nantes cedex 1, France
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Brodeur N, Cloutier P, Bass AD, Bertrand G, Hunting DJ, Grandbois M, Sanche L. Absolute cross section for DNA damage induced by low-energy (10 eV) electrons: Experimental refinements and sample characterization by AFM. J Chem Phys 2018; 149:164904. [PMID: 30384690 DOI: 10.1063/1.5041805] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
This work describes multiple experimental improvements for measuring absolute cross sections of DNA damage induced by low-energy electrons in nanometer-thick films in vacuum. Measurements of such cross sections are particularly sensitive to film thickness and uniformity. Using atomic force microscopy in 70% ethanol, we present a novel and effective method to determine plasmid DNA film thickness and uniformity that combines height histograms and force-distance curves. We also investigate film deposition with DNA intercalated with 1,3-diaminopropane (Dap) on tantalum-coated substrates as a convenient and cost-effective alternative to the previously-used graphite substrate. The tantalum substrate permits deposition of films very similar to those formed on graphite. Using these refinements and further optimizations of the experimental procedure, we measure an absolute cross section of (7.4 ± 2.3) × 10-18 cm2 per nucleotide for conformational damage to a 3197 base-pair plasmid, induced by 10 eV electrons, which we believe should be considered as a reference value.
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Affiliation(s)
- N Brodeur
- Department of Nuclear Medicine and Radiobiology, University of Sherbrooke, Sherbrooke, Québec J1K 2R1, Canada
| | - P Cloutier
- Department of Nuclear Medicine and Radiobiology, University of Sherbrooke, Sherbrooke, Québec J1K 2R1, Canada
| | - A D Bass
- Department of Nuclear Medicine and Radiobiology, University of Sherbrooke, Sherbrooke, Québec J1K 2R1, Canada
| | - G Bertrand
- Department of Pharmacology, University of Sherbrooke, Sherbrooke, Québec J1K 2R1, Canada
| | - D J Hunting
- Department of Nuclear Medicine and Radiobiology, University of Sherbrooke, Sherbrooke, Québec J1K 2R1, Canada
| | - M Grandbois
- Department of Pharmacology, University of Sherbrooke, Sherbrooke, Québec J1K 2R1, Canada
| | - L Sanche
- Department of Nuclear Medicine and Radiobiology, University of Sherbrooke, Sherbrooke, Québec J1K 2R1, Canada
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Dupret-Bories A, Vergez S, Meresse T, Brouillet F, Bertrand G. Contribution of 3D printing to mandibular reconstruction after cancer. Eur Ann Otorhinolaryngol Head Neck Dis 2018; 135:133-136. [DOI: 10.1016/j.anorl.2017.09.007] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Petelet-Giraud E, Cary L, Cary P, Bertrand G, Giglio-Jacquemot A, Hirata R, Aquilina L, Alves LM, Martins V, Melo AM, Montenegro S, Chatton E, Franzen M, Aurouet A. Multi-layered water resources, management, and uses under the impacts of global changes in a southern coastal metropolis: When will it be already too late? Crossed analysis in Recife, NE Brazil. Sci Total Environ 2018; 618:645-657. [PMID: 29056379 DOI: 10.1016/j.scitotenv.2017.07.228] [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] [Subscribe] [Scholar Register] [Received: 03/12/2017] [Revised: 07/07/2017] [Accepted: 07/25/2017] [Indexed: 05/27/2023]
Abstract
Coastal water resources are a worldwide key socio-environmental issue considering the increasing concentration of population in these areas. Here, we propose an integrative transdisciplinary approach of water resource, water management and water access in Recife (NE Brazil). The present-day water situation is conceptualized as an imbricated multi-layered system: a multi-layered water resource, managed by a multi-layered governance system and used by a multi-layered social population. This allows identifying processes of quantitative, qualitative, and sanitary conflicts between governance and population strategies regarding water supply, as well as the institutional and individual denials of these conflicts. Based on this model, we anticipate future water-related problematic fates. Concerning the water resource system, the rapid groundwater level decrease due to unsustainable water predatory strategies, and the very low recharge rate have drastically modified the aquifer system functioning, inducing hydraulic connection between shallow groundwater (contaminated and locally salty) and deep ones (mostly fresh, with local inherited salinity), threatening the deep strategic water resource. Concerning the water governance system, the investments to increase the capacity storage of surface water, the water regulation agencies and the public/private partnership should shortly improve the water supply and wastewater issue. Nevertheless, the water situation will remain highly fragile due to the expected water demand increase, the precipitation decrease and the sea-level increase. Concerning the water access system, the population variably perceives these current and further effects and the possible mitigation policies, and develops alternative individual strategies. Authorities, policymakers and water managers will have to implement a well-balanced water governance, taking into account the specificities of the PPP, public and private groundwater users, and with a strong political willingness for a sustainable water management to ensure water supply for all the population. In other words, an anticipatory and integrated vision is necessary to reduce the discrepancies in this complex system.
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Affiliation(s)
| | - Lise Cary
- BRGM, French Geological Survey, 3 Av. C. Guillemin, 45060 Orléans, France
| | - Paul Cary
- CERIES, ,University of Lille 3, 59650 Villeneuve-d'Ascq, France
| | - Guillaume Bertrand
- Civil Engineering Department, UFPE, 50740 Recife, Brazil; CEPAS, Institute of Geosciences, University of São Paulo, 05508-080 São Paulo, Brazil
| | | | - Ricardo Hirata
- CEPAS, Institute of Geosciences, University of São Paulo, 05508-080 São Paulo, Brazil
| | - Luc Aquilina
- OSUR-Géosciences Rennes, Université Rennes 1 - CNRS, 35000 Rennes, France
| | - Lincoln Muniz Alves
- Instituto Nacional de Pesquisas Espaciais (CCST/INPE), São Jose dos Campos, Brazil
| | - Veridiana Martins
- CEPAS, Institute of Geosciences, University of São Paulo, 05508-080 São Paulo, Brazil
| | - Ana Maria Melo
- CERIES, ,University of Lille 3, 59650 Villeneuve-d'Ascq, France
| | | | - Eliot Chatton
- OSUR-Géosciences Rennes, Université Rennes 1 - CNRS, 35000 Rennes, France
| | - Melissa Franzen
- CPRM, Brazilian Geological Survey, Avenida Sul 2291, Recife, PE, Brazil
| | - Axel Aurouet
- Géo-Hyd, 101 rue Jacques Charles, 45160 Olivet, France
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Chaix JM, Hennenberg M, Bertrand G. Instabilités dans la croissance de la couche solide produite par une réaction exothermique solide 1 + gaz → solide 2. I — Mise en équation et analyse linéaire de stabilité. ACTA ACUST UNITED AC 2017. [DOI: 10.1051/jcp/1982790781] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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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Bertrand G, Aarnink A, Nivet C, Jacques A, Cherel M, Renac V, Kennel A. A new discrepancy of HPA-3 genotyping because of a rare HPA-27bw polymorphism. Transfus Med 2017; 27:307-308. [PMID: 28419585 DOI: 10.1111/tme.12414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Revised: 02/08/2017] [Accepted: 03/17/2017] [Indexed: 10/19/2022]
Affiliation(s)
- G Bertrand
- EFS Bretagne, Histocompatibility Laboratory, Rennes, France
| | - A Aarnink
- Histocompatibility Laboratory, University Hospital of Nancy, Nancy, France
| | - C Nivet
- EFS Bretagne, Histocompatibility Laboratory, Rennes, France
| | - A Jacques
- Histocompatibility Laboratory, University Hospital of Nancy, Nancy, France
| | - M Cherel
- EFS Bretagne, Histocompatibility Laboratory, Rennes, France
| | - V Renac
- EFS Bretagne, Histocompatibility Laboratory, Rennes, France
| | - A Kennel
- Histocompatibility Laboratory, University Hospital of Nancy, Nancy, France
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Chatton E, Aquilina L, Pételet-Giraud E, Cary L, Bertrand G, Labasque T, Hirata R, Martins V, Montenegro S, Vergnaud V, Aurouet A, Kloppmann W. Glacial recharge, salinisation and anthropogenic contamination in the coastal aquifers of Recife (Brazil). Sci Total Environ 2016; 569-570:1114-1125. [PMID: 27387803 DOI: 10.1016/j.scitotenv.2016.06.180] [Citation(s) in RCA: 8] [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: 02/22/2016] [Revised: 05/29/2016] [Accepted: 06/21/2016] [Indexed: 06/06/2023]
Abstract
Implying large residence times and complex water origins deep coastal aquifers are of particular interest as they are remarkable markers of climate, water use and land use changes. Over the last decades, the Metropolitan Region of Recife (Brazil) went through extensive environmental changes increasing the pressure on water resources and giving rise to numerous environmental consequences on the coastal groundwater systems. We analysed the groundwater of the deep aquifers Cabo and Beberibe that are increasingly exploited. The processes potentially affecting groundwater residence times and flow paths have been studied using a multi-tracer approach (CFCs, SF6, noble gases, 14C, 2H and 18O). The main findings of these investigations show that: (1) Groundwaters of the Cabo and Beberibe aquifers have long residence times and were recharged about 20,000years ago. (2) Within these old groundwaters we can find palaeo-climate evidences from the last glacial period at the tropics with lower temperatures and dryer conditions than the present climate. (3) Recently, the natural slow dynamic of these groundwater systems was significantly affected by mixing processes with contaminated modern groundwater coming from the shallow unconfined Boa Viagem aquifer. (4) The large exploitation of these aquifers leads to a modification of the flow directions and causes the intrusion through palaeo-channels of saline water probably coming from the Capibaribe River and from the last transgression episodes. These observations indicate that the current exploitation of the Cabo and Beberibe aquifers is unsustainable regarding the long renewal times of these groundwater systems as well as their ongoing contamination and salinisation. The groundwater cycle being much slower than the human development rhythm, it is essential to integrate the magnitude and rapidity of anthropogenic impacts on this extremely slow cycle to the water management concepts.
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Affiliation(s)
- E Chatton
- Géosciences Rennes, Université Rennes 1-CNRS, UMR 6118, adress: 263 av du général Leclerc, Campus de Beaulieu, bat 15, 35042 Rennes Cedex, France.
| | - L Aquilina
- Géosciences Rennes, Université Rennes 1-CNRS, UMR 6118, adress: 263 av du général Leclerc, Campus de Beaulieu, bat 15, 35042 Rennes Cedex, France.
| | - E Pételet-Giraud
- Bureau de Recherches Géologiques et Minières (BRGM), adress: 3 avenue Claude-Guillemin, BP 36009, 45060 Orléans Cedex 2, France.
| | - L Cary
- Bureau de Recherches Géologiques et Minières (BRGM), adress: 3 avenue Claude-Guillemin, BP 36009, 45060 Orléans Cedex 2, France.
| | - G Bertrand
- Instituto de Geociências, CEPAS (Groundwater Research Center), University of São Paulo, adress: Rua do lago 562, 05508-080 Sao Paulo, Brazil.
| | - T Labasque
- Géosciences Rennes, Université Rennes 1-CNRS, UMR 6118, adress: 263 av du général Leclerc, Campus de Beaulieu, bat 15, 35042 Rennes Cedex, France.
| | - R Hirata
- Instituto de Geociências, CEPAS (Groundwater Research Center), University of São Paulo, adress: Rua do lago 562, 05508-080 Sao Paulo, Brazil.
| | - V Martins
- Instituto de Geociências, CEPAS (Groundwater Research Center), University of São Paulo, adress: Rua do lago 562, 05508-080 Sao Paulo, Brazil.
| | - S Montenegro
- Civil Engineering Department, Universidade Federal Pernambuco, adress: Avenida Professor Moraes Rego, n° 1235, bairro Cidade Universitária, Recife, Brazil.
| | - V Vergnaud
- Géosciences Rennes, Université Rennes 1-CNRS, UMR 6118, adress: 263 av du général Leclerc, Campus de Beaulieu, bat 15, 35042 Rennes Cedex, France.
| | - A Aurouet
- GeoHyd, adress: Parc technologique du Clos du Moulin, 101 rue Jacques Charles, 45160 Olivet, France.
| | - W Kloppmann
- Bureau de Recherches Géologiques et Minières (BRGM), adress: 3 avenue Claude-Guillemin, BP 36009, 45060 Orléans Cedex 2, France.
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Bertrand G, Hirata R, Pauwels H, Cary L, Petelet-Giraud E, Chatton E, Aquilina L, Labasque T, Martins V, Montenegro S, Batista J, Aurouet A, Santos J, Bertolo R, Picot G, Franzen M, Hochreutener R, Braibant G. Groundwater contamination in coastal urban areas: Anthropogenic pressure and natural attenuation processes. Example of Recife (PE State, NE Brazil). J Contam Hydrol 2016; 192:165-180. [PMID: 27500748 DOI: 10.1016/j.jconhyd.2016.07.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [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: 06/24/2015] [Revised: 07/22/2016] [Accepted: 07/25/2016] [Indexed: 06/06/2023]
Abstract
In a context of increasing land use pressure (over-exploitation, surface-water contamination) and repeated droughts, identifying the processes affecting groundwater quality in coastal megacities of the tropical and arid countries will condition their long-term social and environmental sustainability. The present study focuses on the Brazilian Recife Metropolitan Region (RMR), which is a highly urbanized area (3,743,854 inhabitants in 2010) on the Atlantic coast located next to an estuarial zone and overlying a multi-layered sedimentary system featured by a variable sediment texture and organic content. It investigates the contamination and redox status patterns conditioning potential attenuation within the shallow aquifers that constitute the interface between the city and the strategic deeper semi-confined aquifers. These latter are increasingly exploited, leading to high drawdown in potenciometric levels of 20-30m and up to 70m in some high well density places, and potentially connected to the surface through leakage. From a multi-tracer approach (major ions, major gases, δ(11)B, δ(18)O-SO4, δ(34)S-SO4) carried out during two field campaigns in September 2012 and March 2013 (sampling of 19 wells and 3 surface waters), it has been possible to assess the contamination sources and the redox processes. The increasing trend for mineralization from inland to coastal and estuarial wells (from 119 to around 10,000μS/cm) is at first attributed to water-rock interactions combined with natural and human-induced potentiometric gradients. Secondly, along with this trend, one finds an environmental pressure gradient related to sewage and/or surface-channel network impacts (typically depleted δ(11)B within the range of 10-15‰) that are purveyors of chloride, nitrate, ammonium and sulfate. Nitrate, ammonium and sulfate (ranging from 0 to 1.70mmol/L, from 0 to 0,65mmol/L, from 0.03 to 3.91mmol/L respectively are also potentially produced or consumed through various redox processes (pyrite oxidation, denitrification, dissimilatory nitrate reduction to ammonium) within the system, as is apparent within a patchwork of biogeochemical reactors. Furthermore, intensive pumping in the coastal area with its high well density punctually leads to temporary well salinization ([Cl] reaching temporarily 79mmol/L). Our results, summarized as a conceptual scheme based on environmental conditions, is a suitable basis for implementing sustainable management in coastal sedimentary hydrosystems influenced by highly urbanized conditions.
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Affiliation(s)
- G Bertrand
- Instituto de Geociências, CEPAS (GroundwaterResearch Center), University of São Paulo, Rua do lago 562, 05508-080 São Paulo, Brazil.
| | - R Hirata
- Instituto de Geociências, CEPAS (GroundwaterResearch Center), University of São Paulo, Rua do lago 562, 05508-080 São Paulo, Brazil.
| | - H Pauwels
- Bureau de Recherches Géologiques et Minières (BRGM), 3 Avenue Claude-Guillemin BP 36009, 45060 Orléans Cedex 2, France.
| | - L Cary
- Bureau de Recherches Géologiques et Minières (BRGM), 3 Avenue Claude-Guillemin BP 36009, 45060 Orléans Cedex 2, France.
| | - E Petelet-Giraud
- Bureau de Recherches Géologiques et Minières (BRGM), 3 Avenue Claude-Guillemin BP 36009, 45060 Orléans Cedex 2, France.
| | - E Chatton
- Géosciences Rennes, Université Rennes 1-CNRS, UMR 6118, Campus de Beaulieu, 35042 Rennes Cedex, France.
| | - L Aquilina
- Géosciences Rennes, Université Rennes 1-CNRS, UMR 6118, Campus de Beaulieu, 35042 Rennes Cedex, France.
| | - T Labasque
- Géosciences Rennes, Université Rennes 1-CNRS, UMR 6118, Campus de Beaulieu, 35042 Rennes Cedex, France.
| | - V Martins
- Instituto de Geociências, CEPAS (GroundwaterResearch Center), University of São Paulo, Rua do lago 562, 05508-080 São Paulo, Brazil.
| | - S Montenegro
- Civil Engineering Department, Universidade Federal Pernambuco, Avenida Professor Moraes Rego, n° 1235, bairro Cidade Universitária, Recife, Brazil.
| | - J Batista
- Instituto de Geociências, CEPAS (GroundwaterResearch Center), University of São Paulo, Rua do lago 562, 05508-080 São Paulo, Brazil.
| | - A Aurouet
- GeoHyd, Parc technologique du Clos du Moulin, 101 rue Jacques Charles, 45160 Olivet, France.
| | - J Santos
- Civil Engineering Department, Universidade Federal Pernambuco, Avenida Professor Moraes Rego, n° 1235, bairro Cidade Universitária, Recife, Brazil.
| | - R Bertolo
- Instituto de Geociências, CEPAS (GroundwaterResearch Center), University of São Paulo, Rua do lago 562, 05508-080 São Paulo, Brazil.
| | - G Picot
- Bureau de Recherches Géologiques et Minières (BRGM), 3 Avenue Claude-Guillemin BP 36009, 45060 Orléans Cedex 2, France.
| | - M Franzen
- CPRM, Brazilian Geological Service, Av. Sul, 2291, 50770-011 Recife - PE, Recife, Brazil.
| | - R Hochreutener
- Géosciences Rennes, Université Rennes 1-CNRS, UMR 6118, Campus de Beaulieu, 35042 Rennes Cedex, France.
| | - G Braibant
- Bureau de Recherches Géologiques et Minières (BRGM), 3 Avenue Claude-Guillemin BP 36009, 45060 Orléans Cedex 2, France.
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Moya L, Gille T, Boubaya M, Bertrand G, Planès C, Valeyre D, Lamberto C, Nunes H, Brillet P. Impact pronostique des mesures tomodensitométriques dans la fibrose pulmonaire idiopathique. Rev Mal Respir 2016. [DOI: 10.1016/j.rmr.2015.10.718] [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: 10/22/2022]
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Kourilsky A, Bertrand G, Ursu R, Doridam J, Barlog C, Faillot T, Mandonnet E, Belin C, Levy C, Carpentier A. NIMG-44IMPACT OF ANGIOTENSIN-II RECEPTOR BLOCKERS ON VASOGENIC EDEMA IN GLIOBLASTOMA PATIENTS. Neuro Oncol 2015. [DOI: 10.1093/neuonc/nov225.44] [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: 11/14/2022] Open
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Cary L, Petelet-Giraud E, Bertrand G, Kloppmann W, Aquilina L, Martins V, Hirata R, Montenegro S, Pauwels H, Chatton E, Franzen M, Aurouet A. Origins and processes of groundwater salinization in the urban coastal aquifers of Recife (Pernambuco, Brazil): A multi-isotope approach. Sci Total Environ 2015; 530-531:411-429. [PMID: 26063126 DOI: 10.1016/j.scitotenv.2015.05.015] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Revised: 05/04/2015] [Accepted: 05/04/2015] [Indexed: 06/04/2023]
Abstract
In the coastal multilayer aquifer system of a highly urbanized southern city (Recife, Brazil), where groundwaters are affected by salinization, a multi-isotope approach (Sr, B, O, H) was used to investigate the sources and processes of salinization. The high diversity of the geological bodies, built since the Atlantic opening during the Cretaceous, highly constrains the heterogeneity of the groundwater chemistry, e.g. Sr isotope ratios, and needs to be integrated to explain the salinization processes and groundwater pathways. A paleoseawater intrusion, most probably the 120 kyB.P. Pleistocene marine transgression, and cationic exchange are clearly evidenced in the most salinized parts of the Cabo and Beberibe aquifers. All (87)Sr/(86)Sr values are above the past and present-day seawater signatures, meaning that the Sr isotopic signature is altered due to additional Sr inputs from dilution with different freshwaters, and water-rock interactions. Only the Cabo aquifer presents a well-delimitated area of Na-HCO3 water typical of a freshening process. The two deep aquifers also display a broad range of B concentrations and B isotope ratios with values among the highest known to date (63-68.5‰). This suggests multiple sources and processes affecting B behavior, among which mixing with saline water, B sorption on clays and mixing with wastewater. The highly fractionated B isotopic values were explained by infiltration of relatively salty water with B interacting with clays, pointing out the major role played by (palaeo)-channels for the deep Beberibe aquifer recharge. Based on an increase of salinity at the end of the dry season, a present-day seawater intrusion is identified in the surficial Boa Viagem aquifer. Our conceptual model presents a comprehensive understanding of the major groundwater salinization pathways and processes, and should be of benefit for other southern Atlantic coastal aquifers to better address groundwater management issues.
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Affiliation(s)
- Lise Cary
- BRGM French Geological Survey, 3 Avenue Claude Guillemin, 45060 Orléans Cedex 2, France.
| | | | - Guillaume Bertrand
- Institute of Geosciences, University of São Paulo, Rua do Lago, 562 Butantã, 05508-080 Sao Paulo, Brazil
| | - Wolfram Kloppmann
- BRGM French Geological Survey, 3 Avenue Claude Guillemin, 45060 Orléans Cedex 2, France
| | - Luc Aquilina
- OSUR-Géosciences Rennes, Université Rennes 1 - CNRS, 35000 Rennes, France
| | - Veridiana Martins
- Institute of Geosciences, University of São Paulo, Rua do Lago, 562 Butantã, 05508-080 Sao Paulo, Brazil
| | - Ricardo Hirata
- Institute of Geosciences, University of São Paulo, Rua do Lago, 562 Butantã, 05508-080 Sao Paulo, Brazil
| | - Suzana Montenegro
- Civil Engineering Department, Federal University of Pernambuco, 50740 Recife, PE Brazil
| | - Hélène Pauwels
- BRGM French Geological Survey, 3 Avenue Claude Guillemin, 45060 Orléans Cedex 2, France
| | - Eliot Chatton
- OSUR-Géosciences Rennes, Université Rennes 1 - CNRS, 35000 Rennes, France
| | - Melissa Franzen
- CPRM, Brazilian Geologic Survey, Avenida Sul 2291, Recife PE, Brazil
| | - Axel Aurouet
- Géo-Hyd, 101 rue Jacques Charles, 45160 Olivet, France
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Wu GG, Zhou Y, Shen WD, Li LL, Liu JL, Zhong ZL, Bertrand G, Kaplan C. HPA-3a neonatal alloimmune thrombocytopenia: a case report from China, and HPA-3 allele frequencies in the GuangXi Zhuang and Han populations. ACTA ACUST UNITED AC 2015. [DOI: 10.1111/voxs.12175] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- G.-G. Wu
- Platelet Immunology Department; Nanning Institute of Transfusion Medicine; Nanning China
- Nanning Blood Center; Nanning China
| | - Y. Zhou
- Platelet Immunology Department; Nanning Institute of Transfusion Medicine; Nanning China
- Nanning Blood Center; Nanning China
| | - W.-D. Shen
- Platelet Immunology Department; Nanning Institute of Transfusion Medicine; Nanning China
- Nanning Blood Center; Nanning China
| | - L.-L. Li
- Platelet Immunology Department; Nanning Institute of Transfusion Medicine; Nanning China
- Nanning Blood Center; Nanning China
| | - J.-L. Liu
- Platelet Immunology Department; Nanning Institute of Transfusion Medicine; Nanning China
- Nanning Blood Center; Nanning China
| | - Z.-L. Zhong
- Platelet Immunology Department; Nanning Institute of Transfusion Medicine; Nanning China
- Nanning Blood Center; Nanning China
| | - G. Bertrand
- Platelet Immunology Department; Institut National de la Transfusion Sanguine; Paris France
| | - C. Kaplan
- Platelet Immunology Department; Institut National de la Transfusion Sanguine; Paris France
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Bardy G, Virsolvy A, Quignard JF, Ravier MA, Bertrand G, Dalle S, Cros G, Magous R, Richard S, Oiry C. Quercetin induces insulin secretion by direct activation of L-type calcium channels in pancreatic beta cells. Br J Pharmacol 2015; 169:1102-13. [PMID: 23530660 DOI: 10.1111/bph.12194] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2012] [Revised: 03/01/2013] [Accepted: 03/21/2013] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND AND PURPOSE Quercetin is a natural polyphenolic flavonoid that displays anti-diabetic properties in vivo. Its mechanism of action on insulin-secreting beta cells is poorly documented. In this work, we have analysed the effects of quercetin both on insulin secretion and on the intracellular calcium concentration ([Ca(2+)]i) in beta cells, in the absence of any co-stimulating factor. EXPERIMENTAL APPROACH Experiments were performed on both INS-1 cell line and rat isolated pancreatic islets. Insulin release was quantified by the homogeneous time-resolved fluorescence method. Variations in [Ca(2+)]i were measured using the ratiometric fluorescent Ca(2+) indicator Fura-2. Ca(2+) channel currents were recorded with the whole-cell patch-clamp technique. KEY RESULTS Quercetin concentration-dependently increased insulin secretion and elevated [Ca(2+)]i. These effects were not modified by the SERCA inhibitor thapsigargin (1 μmol·L(-1)), but were nearly abolished by the L-type Ca(2+) channel antagonist nifedipine (1 μmol·L(-1)). Similar to the L-type Ca(2+) channel agonist Bay K 8644, quercetin enhanced the L-type Ca(2+) current by shifting its voltage-dependent activation towards negative potentials, leading to the increase in [Ca(2+)]i and insulin secretion. The effects of quercetin were not inhibited in the presence of a maximally active concentration of Bay K 8644 (1 μmol·L(-1)), with the two drugs having cumulative effects on [Ca(2+)]i. CONCLUSIONS AND IMPLICATIONS Taken together, our results show that quercetin stimulates insulin secretion by increasing Ca(2+) influx through an interaction with L-type Ca(2+) channels at a site different from that of Bay K 8644. These data contribute to a better understanding of quercetin's mechanism of action on insulin secretion.
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Affiliation(s)
- G Bardy
- Département de Pharmacologie Médicale et Toxicologie, Hôpital Lapeyronie, CHRU de Montpellier, Montpellier, France
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Celle-Jeanton H, Schemberg D, Mohammed N, Huneau F, Bertrand G, Lavastre V, Le Coustumer P. Evaluation of pharmaceuticals in surface water: reliability of PECs compared to MECs. Environ Int 2014; 73:10-21. [PMID: 25080069 DOI: 10.1016/j.envint.2014.06.015] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [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: 12/26/2013] [Revised: 06/16/2014] [Accepted: 06/22/2014] [Indexed: 06/03/2023]
Abstract
Due to the current analytical processes that are not able to measure all the pharmaceutical molecules and to the high costs and the consumption of time to sample and analyze PhACs, models to calculate Predicted Environmental Concentrations (PECs) have been developed. However a comparison between MECs and PECs, taking into account the methods of calculations and peculiarly the parameters included in the calculation (consumption data, pharmacokinetic parameters, elimination rate in STPs and in the environment), is necessary to assess the validity of PECs. MEC variations of sixteen target PhACs [acetaminophen (ACE), amlodipine (AML), atenolol (ATE), caffeine (CAF), carbamazepine (CAR), doxycycline (DOX), epoxycarbamazepine (EPO), fluvoxamine (FLU), furosemide (FUR), hydrochlorothiazide (HYD), ifosfamide (IFO), losartan (LOS), pravastatin (PRA), progesterone (PROG), ramipril (RAM), trimetazidine (TRI)] have been evaluated during one hydrological cycle, from October 2011 to October 2012 and compared to PECs calculated by using an adaptation of the models proposed by Heberer and Feldmann (2005) and EMEA (2006). Comparison of PECs and MECS has been achieved for six molecules: ATE, CAR, DOX, FUR, HYD and PRA. DOX, FUR and HYD present differences between PECs and MECs on an annual basis but their temporal evolutions follow the same trends. PEC evaluation for these PhACs could then be possible but need some adjustments of consumption patterns, pharmacokinetic parameters and/or mechanisms of (bio)degradation. ATE, CAR and PRA are well modeled; PECs can then be used as reliable estimation of concentrations without any reserve.
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Affiliation(s)
- Hélène Celle-Jeanton
- Clermont Université, Université Blaise Pascal, Laboratoire Magmas et Volcans, BP 10448, F-63000 Clermont-Ferrand, France; CNRS, UMR 6524, LMV, 63038 Clermont-Ferrand, France; IRD, R 163, LMV, 63038 Clermont-Ferrand, France.
| | - Dimitri Schemberg
- Agence Régionale de Santé d'Auvergne, 60 Avenue de l'Union Soviétique, 63057 Clermont-Ferrand Cedex 1, France
| | - Nabaz Mohammed
- Clermont Université, Université Blaise Pascal, Laboratoire Magmas et Volcans, BP 10448, F-63000 Clermont-Ferrand, France; CNRS, UMR 6524, LMV, 63038 Clermont-Ferrand, France; IRD, R 163, LMV, 63038 Clermont-Ferrand, France; Université de Bordeaux, EA 4592 Géoressources & Environnement, ENSEGID, 1 allée F. Daguin, F-33607 Pessac, France
| | - Frédéric Huneau
- Université de Corse Pascal Paoli, Faculté des Sciences et Techniques, Laboratoire d'Hydrogéologie, Campus Grimaldi, BP 52, 20250 Corte, France; CNRS, UMR 6134, SPE, 20250 Corte, France
| | - Guillaume Bertrand
- University of Sao Paulo, Instituto de Geosciências, Centro de Pesquisas de Água Subterrânea, Rua do lago, 562 Cidade universitaria, 05508-80, Sao Paulo, Brazil
| | - Véronique Lavastre
- Clermont Université, Université Blaise Pascal, Laboratoire Magmas et Volcans, BP 10448, F-63000 Clermont-Ferrand, France; CNRS, UMR 6524, LMV, 63038 Clermont-Ferrand, France; Université de Lyon, Université Jean Monnet, 23 rue du Dr. Michelon, 42023 Saint Etienne, France
| | - Philippe Le Coustumer
- Université de Bordeaux, EA 4592 Géoressources & Environnement, ENSEGID, 1 allée F. Daguin, F-33607 Pessac, France
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Fontão-Wendel R, Bertrand G, Chong W, Sachs UJ, Kaplan C, Tsuno N, Santoso S. Report on the 16th international society of blood transfusion platelet immunology workshop. ACTA ACUST UNITED AC 2014. [DOI: 10.1111/voxs.12110] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - G. Bertrand
- Institut National de la Transfusion Sanguine; Paris France
| | - W. Chong
- National Health Service Blood and Transplant (NHSBT) Colindale; London UK
| | - U. J. Sachs
- Institute for Clinical Immunology and Transfusion Medicine; Justus Liebig University; Giessen Germany
| | - C. Kaplan
- Institut National de la Transfusion Sanguine; Paris France
| | - N. Tsuno
- Department of Transfusion Medicine; The University of Tokyo; Tokyo Japan
| | - S. Santoso
- Institute for Clinical Immunology and Transfusion Medicine; Justus Liebig University; Giessen Germany
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Brouk H, Bertrand G, Zermat B, Djabri Y, Martageix C, Kaplan C, Ouelaa H. Thrombopénies néonatales allo-immunes : difficultés diagnostiques. Transfus Clin Biol 2013. [DOI: 10.1016/j.tracli.2013.03.069] [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: 11/24/2022]
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Bertrand G, Jallu V, Beranger T, Bianchi F, Casale C, Dufour V, Chenet C, Quesne J, Martageix C, Kaplan C. Nouvelle mutation sur le gène de l’intégrine α2 : implication pour le diagnostic d’allo-immunisation fœto-maternelle. Transfus Clin Biol 2013. [DOI: 10.1016/j.tracli.2013.03.080] [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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Bertrand G, Kaplan C. Immunogénétique et allo-immunisation anti-plaquettaire. Transfus Clin Biol 2013. [DOI: 10.1016/j.tracli.2013.04.088] [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: 10/26/2022]
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Bertrand G, Bianchi F, Quesne J, Philippe S, Chenet C, Martageix C, Kaplan C. Thrombopénie néonatale sévère liée à l’allo-antigène rare HPA-12bw. Transfus Clin Biol 2013. [DOI: 10.1016/j.tracli.2013.03.079] [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: 11/29/2022]
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Paris S, Bertrand G, Kaplan C, Rigal D, Brès JC. Développement de puces à ADN pour le génotypage des antigènes plaquettaires humains HPA-1, -5 et -15. Transfus Clin Biol 2013. [DOI: 10.1016/j.tracli.2013.03.107] [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: 10/26/2022]
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Bertrand G, Jallu V, Beranger T, Bianchi F, Casale C, Dufour V, Chenet C, Quesne J, Martageix C, Kaplan C. HPA-5 typing discrepancy reveals an Ile503Leu substitution in platelet GPIa (α2 integrin). Vox Sang 2013; 105:73-6. [PMID: 23368983 DOI: 10.1111/vox.12019] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Revised: 11/08/2012] [Accepted: 11/08/2012] [Indexed: 11/27/2022]
Abstract
BACKGROUND AND OBJECTIVES In fetal/neonatal thrombocytopenia, maternal alloimmunization is diagnosed by the identification of the maternal alloantibody and the offending paternal antigen inherited by the foetus/neonate. Today, for practical reasons, most laboratories perform platelet genotyping instead of phenotyping. Here, we report the case of a human platelet antigen (HPA)-5 genotype/phenotype discrepancy observed in a mother who delivered a mildly thrombocytopenic newborn. MATERIALS AND METHODS Platelet antibody detection and platelet phenotyping were performed using the MAIPA assay; platelet genotypes were determined using BeadChip technology (BioArray), PCR-SSP, PCR-RFLP and sequencing. RESULTS Serological investigations revealed the presence of maternal anti-GPIIbIIIa autoantibodies. No alloantibodies were detected. No feto-maternal platelet incompatibility was observed for HPA-1 to -21. The mother and newborn were genotyped as HPA-5aa using BeadChips, but as HPA-5a (weak b) with PCR-SSP and HPA-5ab with PCR-RFLP. Mother's platelets were phenotyped as HPA-5b(+). GPIa exon 13 sequencing confirmed the HPA-5ab genotype of the mother and newborn, and revealed an NM_002203.3:c.1594A>C mutation near the HPA-5 polymorphism (5' side), leading to an I503L amino acid change. CONCLUSION Feto-maternal alloimmunization was ruled out: the neonatal thrombocytopenia probably resulted from maternal anti-GPIIbIIIa autoantibodies. This case highlights that platelet typing should be performed using two different methods to avoid false diagnosis.
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Affiliation(s)
- G Bertrand
- Platelet Immunology Unit, INTS, Paris, France.
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Münch P, Lebrun JF, Cornée JJ, Thinon I, Guennoc P, Marcaillou BJ, Begot J, Bertrand G, De Berc SB, Biscarrat K, Claud C, De Min L, Fournier F, Gailler L, Graindorge D, Léticée JL, Marie L, Mazabraud Y, Melinte-Dobrinescu M, Moissette P, Quillévéré F, Verati C, Randrianasolo A. Pliocene to Pleistocene carbonate systems of the Guadeloupe archipelago, French Lesser Antilles: a land and sea study (the KaShallow project). ACTA ACUST UNITED AC 2013. [DOI: 10.2113/gssgfbull.184.1-2.99] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
AbstractThis work presents a synthesis of the present-day knowledge on both emerged and submerged carbonate platforms of the Guadeloupe archipelago. Onshore and offshore data acquired during the KaShallow project are presented. Since the early Zanclean, some isolated platforms developed onto a Jurassic to Tortonian basement which displayed reliefs inherited from a major extensional tectonic episode dated from −8 to −5 Ma. Marie-Galante, Grande Terre and the southern shelf of Grande-Terre show strong similarities with Zanclean to Gelasian red-algal facies upward changing into early Calabrian coral facies. A major erosional unconformity (SB2) was recognized and allows to distinguish two early Calabrian formations (Calcaires à Agaricia Formation and Calcaires à Acropora Formation). The final emersion of these platforms is late Calabrian. The La Désirade platform displays Zanclean to early Piacenzian red-algal facies upward changing into coral facies. This platform emerged as soon as in the late Piacenzian. The island subsided again in relation with later extensional tectonic episode and early Calabrian reef platform then unconformably deposited. The Colombie bank deposits comprise Pliocene basinal deposits overlain by late Calabrian coral reefs. The Flandre bank might have emerged synchronously with La Désirade but was drowned only in the late Pleistocene-Holocene interval. Four extensional tectonic episodes have been identified in the late Miocene-Recent interval. Their effects depend on the location of the platforms within the fore-arc.
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Affiliation(s)
- Philippe Münch
- Université Montpellier 2, CNRS, UMR 5243 Géosciences Montpellier, CC 60, place E. Bataillon, 34095 Montpellier cedex 5, France
- Université de Provence, 3 place Victor Hugo, 13331 Marseille cedex 3, France
| | - Jean-Frédéric. Lebrun
- Université des Antilles et de la Guyane, EA4098 LaRGE, 97159 Pointe à Pitre, Guadeloupe FWI
| | - Jean-Jacques Cornée
- Université Montpellier 2, CNRS, UMR 5243 Géosciences Montpellier, CC 60, place E. Bataillon, 34095 Montpellier cedex 5, France
| | - Isabelle Thinon
- BRGM, 3 Avenue Claude Guillemin, 45060 Orleans cedex 02, France
| | - Pol Guennoc
- BRGM, 3 Avenue Claude Guillemin, 45060 Orleans cedex 02, France
| | | | - Jacques Begot
- IUEM, place Nicolas Copernic, 29280 Plouzané, France
| | | | | | - Kevin Biscarrat
- Université de Provence, 3 place Victor Hugo, 13331 Marseille cedex 3, France
| | - Clarisse Claud
- Université des Antilles et de la Guyane, EA4098 LaRGE, 97159 Pointe à Pitre, Guadeloupe FWI
| | - Lyvane De Min
- Université des Antilles et de la Guyane, EA4098 LaRGE, 97159 Pointe à Pitre, Guadeloupe FWI
| | - François Fournier
- Université de Provence, 3 place Victor Hugo, 13331 Marseille cedex 3, France
| | - Lydie Gailler
- BRGM, 3 Avenue Claude Guillemin, 45060 Orleans cedex 02, France
| | | | - Jean-Len Léticée
- Université des Antilles et de la Guyane, EA4098 LaRGE, 97159 Pointe à Pitre, Guadeloupe FWI
| | - Lionel Marie
- Université de Provence, 3 place Victor Hugo, 13331 Marseille cedex 3, France
| | - Yes Mazabraud
- Université des Antilles et de la Guyane, EA4098 LaRGE, 97159 Pointe à Pitre, Guadeloupe FWI
| | | | - Pierre Moissette
- UMR CNRS 5276, Laboratoire de Géologie de Lyon, Terre, Planètes, Environnement, Université Lyon 1, Boulevard du 11 Novembre 1918, 69622 Villeurbanne cedex, France
| | - Frédéric Quillévéré
- UMR CNRS 5276, Laboratoire de Géologie de Lyon, Terre, Planètes, Environnement, Université Lyon 1, Boulevard du 11 Novembre 1918, 69622 Villeurbanne cedex, France
| | - Chrystel Verati
- Université Nice Sophia-Antipolis, UMR 6256 Geoazur, Parc Valrose, 06108 Nice cedex 2, France
| | - Auran Randrianasolo
- Université des Antilles et de la Guyane, EA4098 LaRGE, 97159 Pointe à Pitre, Guadeloupe FWI
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Crabol Y, Terrier B, Rozenberg F, Pestre V, Legendre C, Hermine O, Montagnier-Petrissans C, Guillevin L, Mouthon L, Loic G, Annette B, Alain F, Bertrand F, Bertrand G, Amelie L, Isabelle L, Catherine MP, Luc M, Eric O, Nathalie P, Helene S, Tarek S, Hopital Ambroise P, Jean-Marie LP, Bruno F, Bernard C, Thomas P, Francois D, Loic G, Zora M, Olivier H, Christophe L, Philippe L, Olivier L, Jean-Charles P, Norbert-Claude G, Jean-Paul F, Eric O, Guy L, Hopital B, Hopital N, Amina B. Intravenous Immunoglobulin Therapy for Pure Red Cell Aplasia Related to Human Parvovirus B19 Infection: A Retrospective Study of 10 Patients and Review of the Literature. Clin Infect Dis 2012; 56:968-77. [DOI: 10.1093/cid/cis1046] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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Grand E, Respondek F, Martineau C, Detilleux J, Bertrand G. Effects of short-chain fructooligosaccharides on growth performance of preruminant veal calves. J Dairy Sci 2012. [PMID: 23200477 DOI: 10.3168/jds.2011-4949] [Citation(s) in RCA: 18] [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] [Indexed: 11/19/2022]
Abstract
This study was conducted to evaluate the effects of 2 different daily doses of short-chain fructooligosaccharides (scFOS), a prebiotic ingredient, added to a calf milk replacer on growth performance, carcass characteristics, and fecal concentrations of short-chain fatty acids of preruminant veal calves. In total, 112 male Prim'Holstein calves, between 8 and 10d of age, were randomized in this study according to their body weight and were bred until the age of 168 d. They were fed a calf milk replacer containing 5% soluble wheat proteins as well as cereal-based pellets, the composition of which was adapted to cover the needs of the animals throughout the study. After 2 wk of adaptation, the calf milk replacer was supplemented or not supplemented with a daily dose of 3 or 6g of scFOS. Growth performance of calves, as measured by body weight, cold carcass weight, feed intake, average daily gain, and feed conversion ratio, was recorded and feces samples were taken to evaluate short-chain fatty acid concentrations. The inclusion of wheat proteins in milk replacer did not negatively affect the growth performance of calves in comparison with general standards. The addition of scFOS in the milk reduced the feed conversion ratio of veal calves in a dose-dependent manner and tended to increase the carcass weight. A general trend was observed for an increased production of total short-chain fatty acids in time, but scFOS decreased acetate proportion to the benefit of butyrate proportion. These data suggest that inclusion of scFOS in the calf milk replacer allowed the growth performance of preruminant calves to be enhanced, possibly via a modification of the activities of microbial fermentation.
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Affiliation(s)
- E Grand
- Tereos Syral, 67390 Marckolsheim, France
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Dielmann F, Back O, Henry-Ellinger M, Jerabek P, Frenking G, Bertrand G. A Crystalline Singlet Phosphinonitrene: A Nitrogen Atom-Transfer Agent. Science 2012; 337:1526-8. [DOI: 10.1126/science.1226022] [Citation(s) in RCA: 114] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Bertrand G, Bakchoul T, Javela K, Kjaer Killie M, Kaplan C. Interlaboratory workshop on anti-HPA-1a alloantibody quantification with the mAb-specific immobilization of platelet antigen technique. J Thromb Haemost 2012; 10:1172-4. [PMID: 22826827 DOI: 10.1111/j.1538-7836.2012.04709.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- G Bertrand
- INTS, Platelet Immunology Unit, Paris, France.
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Bertrand G, Tortech L, Fichou D, Malacria M, Aubert C, Gandon V. An Improved Protocol for the Synthesis of [(η4-C4R4)Co(η5-C5H5)] Complexes. Organometallics 2011. [DOI: 10.1021/om200662g] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Guillaume Bertrand
- UPMC, IPCM, UMR CNRS 7201, 4 place Jussieu, 75005 Paris, France
- CEA-Saclay, Organic Nanostructures and Semiconductors Group, SPCSI/IRAMIS, F-91191 Gif-sur-Yvette, France
| | - Ludovic Tortech
- UPMC, IPCM, UMR CNRS 7201, 4 place Jussieu, 75005 Paris, France
- CEA-Saclay, Organic Nanostructures and Semiconductors Group, SPCSI/IRAMIS, F-91191 Gif-sur-Yvette, France
| | - Denis Fichou
- UPMC, IPCM, UMR CNRS 7201, 4 place Jussieu, 75005 Paris, France
- CEA-Saclay, Organic Nanostructures and Semiconductors Group, SPCSI/IRAMIS, F-91191 Gif-sur-Yvette, France
| | - Max Malacria
- UPMC, IPCM, UMR CNRS 7201, 4 place Jussieu, 75005 Paris, France
| | - Corinne Aubert
- UPMC, IPCM, UMR CNRS 7201, 4 place Jussieu, 75005 Paris, France
| | - Vincent Gandon
- Université Paris-Sud 11, ICMMO, UMR CNRS 8182, F-91405 Orsay, France
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Kinjo R, Donnadieu B, Celik MA, Frenking G, Bertrand G. Synthesis and Characterization of a Neutral Tricoordinate Organoboron Isoelectronic with Amines. Science 2011; 333:610-3. [DOI: 10.1126/science.1207573] [Citation(s) in RCA: 451] [Impact Index Per Article: 34.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Bertrand G, Kaplan C. Maternal antibody titration as a predictive parameter for fetal status and therapy effectiveness in pregnancies associated with alloimmune thrombocytopenia. ACTA ACUST UNITED AC 2011. [DOI: 10.1111/j.1751-2824.2011.01462.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Spica T, Fargnoli MC, Hetet G, Bertrand G, Formicone F, Descamps V, Wolkenstein P, Dupin N, Lebbe C, Basset-Seguin N, Saiag P, Cambien F, Grandchamp B, Peris K, Soufir N. EDNRB gene variants and melanoma risk in two southern European populations. Clin Exp Dermatol 2011; 36:782-7. [PMID: 21507037 DOI: 10.1111/j.1365-2230.2011.04062.x] [Citation(s) in RCA: 4] [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: 11/28/2022]
Abstract
BACKGROUND EDNRB gene variants were reported to be associated with melanoma risk in French patients, with the S305N variant showing the highest frequency. AIM To verify the S305N association with melanoma risk in an independent larger French population (378 patients, 389 controls); to investigate the role of EDNRB variants in melanoma risk in an Italian population (133 patients, 118 controls); and to explore the association of CDKN2A or CDK4 mutations with the S305N EDNRB variant in a subgroup of patients (59 French, 12 Italian) with a suspected hereditary predisposition to melanoma (familial melanoma, sporadic multiple primary melanoma or melanoma associated with pancreatic cancer). METHODS The S305N variant was genotyped in the French population, while the EDNRB gene in the Italian population was entirely sequenced. RESULTS Overall, there was no significant difference in the frequency of the S305N variant between patients with sporadic melanoma and controls in either the French or the Italian population. However, a significantly higher S305N allele frequency was detected in French patients with a suspected hereditary predisposition to melanoma compared with controls (P = 0.04). In addition, in this subgroup of patients, the S305N allele was also significantly associated with the presence of CDKN2A mutations (P = 0.04). CONCLUSIONS Our results showed no evidence of association of the S305N EDNRB polymorphism with sporadic melanoma risk in either the French or Italian populations, but there was an indication that EDNRB might be a melanoma-predisposing gene in French patients with a suspected hereditary predisposition to melanoma.
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Affiliation(s)
- T Spica
- Department of Dermatology, University of L'Aquila, L'Aquila, Italy
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Bertrand G. THE IMPORTANCE OF MINUTE CHEMICAL CONSTITUENTS (INFINIMENT PETITS CHIMIQUES) OF BIOLOGICAL PRODUCTS: NICKEL, COBALT AND INSULIN. Science 2010; 64:629-30. [PMID: 17834480 DOI: 10.1126/science.64.1669.629] [Citation(s) in RCA: 14] [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] [Indexed: 11/02/2022]
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Brouk H, Halle L, Bertrand G, Neche FZ, Ouelaa H, Kaplan C. Human platelet antigen allele frequencies in different Algerian populations. ACTA ACUST UNITED AC 2010; 75:673-8. [DOI: 10.1111/j.1399-0039.2009.01429.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [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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Bertrand G, Vinit J, Bielefeld P, Turcu A, Couailler JF, Duong M, Piroth L, Besancenot JF. Syndrome du piriforme révélant une pyomyosite. Rev Med Interne 2009. [DOI: 10.1016/j.revmed.2009.10.407] [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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Labussiere E, Dubois S, van Milgen J, Bertrand G, Noblet J. Effect of solid feed on energy and protein utilization in milk-fed veal calves1. J Anim Sci 2009; 87:1106-19. [DOI: 10.2527/jas.008-1318] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Labussiere E, Dubois S, van Milgen J, Bertrand G, Noblet J. Effects of dietary crude protein on protein and fat deposition in milk-fed veal calves. J Dairy Sci 2009; 91:4741-54. [PMID: 19038950 DOI: 10.3168/jds.2008-1203] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Research on veal calf production has focused on maximizing lean tissue growth. Nevertheless, limited attention has been paid to the evolution of digestive and metabolic utilization of N and energy as calves get older, whereas age at slaughter increases. The objective of this study was to determine the effects of 4 concentrations of dietary crude protein (CP) content on protein and fat deposition and energy utilization in milk-fed calves at 3 stages of fattening using the balance technique combined with heat production measurements in a respiration chamber. At each stage, 16 Prim'Holstein male calves (mean body weight at each stage: 72, 136, and 212 kg) received 4 isocaloric diets with CP contents of 76, 88, 100, and 112% of a reference CP content fixed at 20% during the first stage and 19% during the 2 later stages. After 2 wk of adaptation to their respective diets and housing conditions, the calves were placed for 1 wk in an open-circuit respiration chamber for N and energy balance measurements (first 6 d) and measurement of the fasting heat production (last day). Measurements for a stage were performed over 2 periods of 4 successive weeks. There was no effect of dietary CP on digestibility during the 2 later stages, but the low-protein diet resulted in lower digestibility coefficients for dry matter, organic matter, gross energy, CP, and crude fat during the first stage. Endogenous fecal N was estimated as 2.5 g/kg of dry matter intake irrespective of stage, and metabolic urinary N was estimated at 0.07 g/kg of body weight(0.85) per day. Maximum N retention was 32.8, 40.5, and 44.0 g/d at stages 1, 2, and 3, respectively. The effect of protein intake on protein deposition was dependent on age of the calves, because the marginal efficiency of digestible protein utilization decreased from 64 to 18% as animals got older. Fat deposition decreased with increasing dietary CP content irrespective of stage. Total energy retention was not modified by dietary CP content. The composition of body weight gain was affected differently for each stage, because the protein content of body weight gain increased with increasing dietary CP content during the first stage, whereas it remained constant during the other 2 stages. Fat and energy content in body weight gain decreased with increasing dietary CP irrespective of stage. These results provide a basis for estimating protein requirement of veal calves according to a factorial approach.
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Affiliation(s)
- E Labussiere
- Institut National de la Recherche Agronomique, UMR1079 SENAH, F-35000 Rennes, France
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Bertrand G, Olivier A, Thompson C. The Computer Brain Atlas: lts Use in Stereotaxic Surgery. Stereotact Funct Neurosurg 2007. [DOI: 10.1159/000102806] [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: 11/19/2022]
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