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Illan Montero J, Viala J, Rebeuh J, Berthet S, Blais R, Caldari D, Lasfargue M, Henaff GL, Mas E, Rustom-Pecciarini N, Berrebi D, Henno S, Dabadie A. Collagenous gastritis in children: A national cohort. Arch Pediatr 2023:S0929-693X(23)00079-9. [PMID: 37236887 DOI: 10.1016/j.arcped.2023.03.013] [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: 08/02/2022] [Revised: 02/05/2023] [Accepted: 03/25/2023] [Indexed: 05/28/2023]
Abstract
BACKGROUND Collagen gastritis is a rare disease that manifests in children mainly as isolated gastric involvement associated with martial deficiency anemia. There are no recommendations for the management and follow-up of these patients. We aimed to describe the clinical data, endoscopic findings, and treatments deployed in France's children with collagenous gastritis. METHODS All French pediatric gastroenterology centers and pediatric centers for rare digestive diseases (Centres de Maladies Rares Digestives) were contacted to collect cases of collagenous gastritis, defined on gastric biopsies and diagnosed before 18 years of age. RESULTS A total of 12 cases diagnosed (4 males and 8 females) between 1995 and 2022 could be analyzed. The median age at diagnosis was 12.5 years (7-15.2). The most frequent clinical presentation was abdominal pain (6/11) and/or nonspecific symptomatology attributed to anemia (8/10). Anemia was present in all children (11/11; Hb 2.8-9.1 g/dL). Nodular gastritis was present in 10 patients (antrum: 2; fundus: 4; in antrum and fundus: 4). All patients had a basement membrane thickening (from 19 to 100 μm). The treatments received were PPI (11), oral or intravenous martial supplementation (12), budesonide (1), and prednisone (1). Martial supplementation improved anemia in all cases. At discontinuation, nine of 10 patients had a recurrence of anemia. CONCLUSION Collagenous gastritis is an exceptional condition, clinically manifested in children as abdominal pain and iron deficiency anemia probably of hemorrhagic origin. Patients require long-term follow-up and monitoring of their disease to describe the risk of progression better.
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Affiliation(s)
- Jonathan Illan Montero
- Department of Pediatrics, University Hospital of Vaud (CHUV), 1011 Lausanne, Switzerland.
| | - J Viala
- Pediatric Gastroenterology and Nutrition Department, Robert Debré University Hospital, AP-HP, 75019 Paris, France; Paris Cité University, Paris, France
| | - J Rebeuh
- Department of Pediatrics, Strasbourg University Hospital, 67000 Strasbourg, France
| | - S Berthet
- Pediatric Gastroenterology, Saint George Polyclinic, 06105 Nice, France
| | - R Blais
- Department of Pediatrics, Le Mans Hospital, 72037 Le Mans, France
| | - D Caldari
- Department of Pediatric, Mother and Child Hospital, Nantes University Hospital, 44000 Nantes, France
| | - M Lasfargue
- Department of Pediatric, Mother and Child Hospital, Grenoble University Hospital, 38700 Grenoble, France
| | - G Le Henaff
- Pediatric Gastroenterology, Santé Atlantique-ELSAN Polyclinic, 44800 Saint-Herblain, France
| | - E Mas
- Unité de gastroentérologie, hépatologie, nutrition et diabétologie, hôpital des Enfants, 330, avenue de Grande-Bretagne, TSA 70034, 31300 Toulouse cedex 9, France; Inserm U1043, 31300 Toulouse, France; CNRS, U5282, 31300 Toulouse, France
| | - N Rustom-Pecciarini
- Department of Pediatrics, Annecy Gennevois University Hospital, 74370 Epagny Metz-Tessy, France
| | - D Berrebi
- Paris Cité University, Paris, France; Department of Pediatric Pathology, Robert Debré University and Necker Hospital, AP-HP, 75019 and 75015 Paris, France
| | - S Henno
- Department of Pathology, University Hospital Pontchaillou, 35000 Rennes, France
| | - A Dabadie
- Department of Pediatrics, Rennes South University Hospital, 35200 Rennes, France.
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2
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Boualem A, Berthet S, Devani RS, Camps C, Fleurier S, Morin H, Troadec C, Giovinazzo N, Sari N, Dogimont C, Bendahmane A. Ethylene plays a dual role in sex determination and fruit shape in cucurbits. Curr Biol 2022; 32:2390-2401.e4. [PMID: 35525245 DOI: 10.1016/j.cub.2022.04.031] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 03/21/2022] [Accepted: 04/08/2022] [Indexed: 10/18/2022]
Abstract
Shapes of vegetables and fruits are the result of adaptive evolution and human selection. Modules controlling organ shape have been identified. However, little is known about signals coordinating organ development and shape. Here, we describe the characterization of a melon mutation rf1, leading to round fruit. Histological analysis of rf1 flower and fruits revealed fruit shape is determined at flower stage 8, after sex determination and before flower fertilization. Using positional cloning, we identified the causal gene as the monoecy sex determination gene CmACS7, and survey of melon germplasms showed strong association between fruit shape and sexual types. We show that CmACS7-mediated ethylene production in carpel primordia enhances cell expansion and represses cell division, leading to elongated fruit. Cell size is known to rise as a result of endoreduplication. At stage 8 and anthesis, we found no variation in ploidy levels between female and hermaphrodite flowers, ruling out endoreduplication as a factor in fruit shape determination. To pinpoint the gene networks controlling elongated versus round fruit phenotype, we analyzed the transcriptomes of laser capture microdissected carpels of wild-type and rf1 mutant. These high-resolution spatiotemporal gene expression dynamics revealed the implication of two regulatory modules. The first module implicates E2F-DP transcription factors, controlling cell elongation versus cell division. The second module implicates OVATE- and TRM5-related proteins, controlling cell division patterns. Our finding highlights the dual role of ethylene in the inhibition of the stamina development and the elongation of ovary and fruit in cucurbits.
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Affiliation(s)
- Adnane Boualem
- Université Paris-Saclay, CNRS, INRAE, Université Evry, Institute of Plant Sciences Paris-Saclay (IPS2), 91190 Gif sur Yvette, France
| | - Serge Berthet
- Université Paris-Saclay, CNRS, INRAE, Université Evry, Institute of Plant Sciences Paris-Saclay (IPS2), 91190 Gif sur Yvette, France
| | - Ravi Sureshbhai Devani
- Université Paris-Saclay, CNRS, INRAE, Université Evry, Institute of Plant Sciences Paris-Saclay (IPS2), 91190 Gif sur Yvette, France
| | - Celine Camps
- Université Paris-Saclay, CNRS, INRAE, Université Evry, Institute of Plant Sciences Paris-Saclay (IPS2), 91190 Gif sur Yvette, France
| | - Sebastien Fleurier
- Université Paris-Saclay, CNRS, INRAE, Université Evry, Institute of Plant Sciences Paris-Saclay (IPS2), 91190 Gif sur Yvette, France
| | - Halima Morin
- Université Paris-Saclay, CNRS, INRAE, Université Evry, Institute of Plant Sciences Paris-Saclay (IPS2), 91190 Gif sur Yvette, France
| | - Christelle Troadec
- Université Paris-Saclay, CNRS, INRAE, Université Evry, Institute of Plant Sciences Paris-Saclay (IPS2), 91190 Gif sur Yvette, France
| | - Nathalie Giovinazzo
- INRAE GAFL, Génétique et Amélioration des Fruits et Légumes, 84143 Montfavet, France
| | - Nebahat Sari
- INRAE GAFL, Génétique et Amélioration des Fruits et Légumes, 84143 Montfavet, France
| | - Catherine Dogimont
- INRAE GAFL, Génétique et Amélioration des Fruits et Légumes, 84143 Montfavet, France
| | - Abdelhafid Bendahmane
- Université Paris-Saclay, CNRS, INRAE, Université Evry, Institute of Plant Sciences Paris-Saclay (IPS2), 91190 Gif sur Yvette, France.
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3
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Gehlen M, Berthet S, Séférian R, Ethé C, Penduff T. Quantification of Chaotic Intrinsic Variability of Sea-Air CO 2 Fluxes at Interannual Timescales. Geophys Res Lett 2020; 47:e2020GL088304. [PMID: 33380759 PMCID: PMC7757255 DOI: 10.1029/2020gl088304] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 04/10/2020] [Revised: 10/02/2020] [Accepted: 10/12/2020] [Indexed: 06/12/2023]
Abstract
Chaotic intrinsic variability (CIV) emerges spontaneously from nonlinear ocean dynamics even without any atmospheric variability. Eddy-permitting numerical simulations suggest that CIV is a significant contributor to the interannual to decadal variability of physical properties. Here we show from an ensemble of global ocean eddy-permitting simulations that large-scale interannual CIV propagates from physical properties to sea-air CO2 fluxes in areas of high mesoscale eddy activity (e.g., Southern Ocean and western boundary currents). In these regions and at scales larger than 500 km (~5°), CIV contributes significantly to the interannual variability of sea-air CO2 fluxes. Between 35°S and 45°S (midlatitude Southern Ocean), CIV amounts to 23.76 TgC yr-1 or one half of the atmospherically forced variability. Locally, its contribution to the total interannual variance of sea-air CO2 fluxes exceeds 76%. Outside eddy-active regions its contribution to total interannual variability is below 16%.
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Affiliation(s)
- M. Gehlen
- Laboratoire des Sciences du Climat et de l'Environnement, Institut Pierre Simon LaplaceGif‐Sur‐YvetteFrance
| | | | | | - Ch. Ethé
- Institut Pierre Simon LaplaceParisFrance
| | - T. Penduff
- Université Grenoble Alpes, CNRS, IRD, Grenoble‐INP, IGEGrenobleFrance
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4
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Berthet S, Villiers F, Alban C, Serre NBC, Martin-Laffon J, Figuet S, Boisson AM, Bligny R, Kuntz M, Finazzi G, Ravanel S, Bourguignon J. Arabidopsis thaliana plants challenged with uranium reveal new insights into iron and phosphate homeostasis. New Phytol 2018; 217:657-670. [PMID: 29165807 DOI: 10.1111/nph.14865] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Accepted: 09/24/2017] [Indexed: 06/07/2023]
Abstract
Uranium (U) is a naturally occurring radionuclide that is toxic to plants. It is known to interfere with phosphate nutrition and to modify the expression of iron (Fe)-responsive genes. The transporters involved in the uptake of U from the environment are unknown. Here, we addressed whether IRT1, a high-affinity Fe2+ transporter, could contribute to U uptake in Arabidopsis thaliana. An irt1 null mutant was grown hydroponically in different conditions of Fe bioavailability and phosphate supply, and challenged with uranyl. Several physiological parameters (fitness, photosynthesis) were measured to evaluate the response to U treatment. We found that IRT1 is not a major route for U uptake in our experimental conditions. However, the analysis of irt1 indicated that uranyl interferes with Fe and phosphate homeostasis at different levels. In phosphate-sufficient conditions, the absence of the cation chelator EDTA in the medium has drastic consequences on the physiology of irt1, with important symptoms of Fe deficiency in chloroplasts. These effects are counterbalanced by U, probably because the radionuclide competes with Fe for complexation with phosphate and thus releases active Fe for metabolic and biogenic processes. Our study reveals that challenging plants with U is useful to decipher the complex interplay between Fe and phosphate.
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Affiliation(s)
- Serge Berthet
- Univ. Grenoble Alpes, CEA, CNRS, INRA, BIG-LPCV, 38000, Grenoble, France
| | - Florent Villiers
- Univ. Grenoble Alpes, CEA, CNRS, INRA, BIG-LPCV, 38000, Grenoble, France
| | - Claude Alban
- Univ. Grenoble Alpes, CEA, CNRS, INRA, BIG-LPCV, 38000, Grenoble, France
| | - Nelson B C Serre
- Univ. Grenoble Alpes, CEA, CNRS, INRA, BIG-LPCV, 38000, Grenoble, France
| | | | - Sylvie Figuet
- Univ. Grenoble Alpes, CEA, CNRS, INRA, BIG-LPCV, 38000, Grenoble, France
| | - Anne-Marie Boisson
- Univ. Grenoble Alpes, CEA, CNRS, INRA, BIG-LPCV, 38000, Grenoble, France
| | - Richard Bligny
- Univ. Grenoble Alpes, CEA, CNRS, INRA, BIG-LPCV, 38000, Grenoble, France
| | - Marcel Kuntz
- Univ. Grenoble Alpes, CEA, CNRS, INRA, BIG-LPCV, 38000, Grenoble, France
| | - Giovanni Finazzi
- Univ. Grenoble Alpes, CEA, CNRS, INRA, BIG-LPCV, 38000, Grenoble, France
| | - Stéphane Ravanel
- Univ. Grenoble Alpes, CEA, CNRS, INRA, BIG-LPCV, 38000, Grenoble, France
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Doustaly F, Combes F, Fiévet JB, Berthet S, Hugouvieux V, Bastien O, Aranjuelo I, Leonhardt N, Rivasseau C, Carrière M, Vavasseur A, Renou JP, Vandenbrouck Y, Bourguignon J. Uranium perturbs signaling and iron uptake response in Arabidopsis thaliana roots. Metallomics 2014; 6:809-21. [DOI: 10.1039/c4mt00005f] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The early plant root response to uranyl was characterized using complete Arabidopsis transcriptome microarrays.
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Affiliation(s)
- Fany Doustaly
- Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA)
- Direction des Sciences du Vivant (DSV)
- Institut de Recherche en Technologies et Sciences pour le Vivant (iRTSV)
- Laboratoire de Physiologie Cellulaire Végétale (PCV)
- Grenoble F-38054, France
| | - Florence Combes
- CEA
- DSV
- iRTSV
- Laboratoire de Biologie à Grande Echelle
- Grenoble F-38054, France
| | - Julie B. Fiévet
- Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA)
- Direction des Sciences du Vivant (DSV)
- Institut de Recherche en Technologies et Sciences pour le Vivant (iRTSV)
- Laboratoire de Physiologie Cellulaire Végétale (PCV)
- Grenoble F-38054, France
| | - Serge Berthet
- Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA)
- Direction des Sciences du Vivant (DSV)
- Institut de Recherche en Technologies et Sciences pour le Vivant (iRTSV)
- Laboratoire de Physiologie Cellulaire Végétale (PCV)
- Grenoble F-38054, France
| | - Véronique Hugouvieux
- Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA)
- Direction des Sciences du Vivant (DSV)
- Institut de Recherche en Technologies et Sciences pour le Vivant (iRTSV)
- Laboratoire de Physiologie Cellulaire Végétale (PCV)
- Grenoble F-38054, France
| | - Olivier Bastien
- Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA)
- Direction des Sciences du Vivant (DSV)
- Institut de Recherche en Technologies et Sciences pour le Vivant (iRTSV)
- Laboratoire de Physiologie Cellulaire Végétale (PCV)
- Grenoble F-38054, France
| | - Iker Aranjuelo
- Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA)
- Direction des Sciences du Vivant (DSV)
- Institut de Recherche en Technologies et Sciences pour le Vivant (iRTSV)
- Laboratoire de Physiologie Cellulaire Végétale (PCV)
- Grenoble F-38054, France
| | - Nathalie Leonhardt
- CEA
- CNRS
- Université Aix-Marseille
- Laboratoire de Biologie du Développement des Plantes
- UMR 7265
| | - Corinne Rivasseau
- Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA)
- Direction des Sciences du Vivant (DSV)
- Institut de Recherche en Technologies et Sciences pour le Vivant (iRTSV)
- Laboratoire de Physiologie Cellulaire Végétale (PCV)
- Grenoble F-38054, France
| | - Marie Carrière
- CEA
- INAC
- UMR E3 CEA-UJF
- SCIB
- Laboratoire Lésions des Acides Nucléiques
| | - Alain Vavasseur
- CEA
- CNRS
- Université Aix-Marseille
- Laboratoire de Biologie du Développement des Plantes
- UMR 7265
| | - Jean-Pierre Renou
- Unité de Recherche en Génomique Végétale
- UMR 1165
- INRA
- CNRS
- Université d'Evry Val d'Essonne
| | - Yves Vandenbrouck
- CEA
- DSV
- iRTSV
- Laboratoire de Biologie à Grande Echelle
- Grenoble F-38054, France
| | - Jacques Bourguignon
- Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA)
- Direction des Sciences du Vivant (DSV)
- Institut de Recherche en Technologies et Sciences pour le Vivant (iRTSV)
- Laboratoire de Physiologie Cellulaire Végétale (PCV)
- Grenoble F-38054, France
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Berthet S, Triolo V, Destombe S, Descos B, Villart-Truc F, Lachaux A. L’œsophagite à éosinophiles de l’enfant. Quand l’évoquer et comment la prendre en charge ? À propos de 64 patients issus de deux centres. Arch Pediatr 2013. [DOI: 10.1016/j.arcped.2013.02.033] [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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Cesarino I, Araújo P, Sampaio Mayer JL, Vicentini R, Berthet S, Demedts B, Vanholme B, Boerjan W, Mazzafera P. Expression of SofLAC, a new laccase in sugarcane, restores lignin content but not S:G ratio of Arabidopsis lac17 mutant. J Exp Bot 2013; 64:1769-81. [PMID: 23418623 DOI: 10.1093/jxb/ert045] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Lignin is a complex phenolic heteropolymer deposited in the secondarily thickened walls of specialized plant cells to provide strength for plants to stand upright and hydrophobicity to conducting cells for long-distance water transport. Although essential for plant growth and development, lignin is the major plant cell-wall component responsible for biomass recalcitrance to industrial processing. Peroxidases and laccases are generally thought to be responsible for lignin polymerization, but, given their broad substrate specificities and large gene families, specific isoforms involved in lignification are difficult to identify. This study used a combination of co-expression analysis, tissue/cell-type-specific expression analysis, and genetic complementation to correlate a sugarcane laccase gene, SofLAC, to the lignification process. A co-expression network constructed from 37 cDNA libraries showed that SofLAC was coordinately expressed with several phenylpropanoid biosynthesis genes. Tissue-specific expression analysis by quantitative RT-PCR showed that SofLAC was expressed preferentially in young internodes and that expression levels decrease with stem maturity. Cell-type-specific expression analysis by in situ hybridization demonstrated the localization of SofLAC mRNA in lignifying cell types, mainly in inner and outer portions of sclerenchymatic bundle sheaths. To investigate whether SofLAC is able to oxidize monolignols during lignification, the Arabidopsis lac17 mutant, which has reduced lignin levels, was complemented by expressing SofLAC under the control of the Arabidopsis AtLAC17 promoter. The expression of SofLAC restored the lignin content but not the lignin composition in complemented lac17 mutant lines. Taken together, these results suggest that SofLAC participates in lignification in sugarcane.
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Affiliation(s)
- Igor Cesarino
- Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas, CP 6109, 13083-970 Campinas, SP, Brazil.
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Berthet S, Demont-Caulet N, Pollet B, Bidzinski P, Cézard L, Le Bris P, Borrega N, Hervé J, Blondet E, Balzergue S, Lapierre C, Jouanin L. Disruption of LACCASE4 and 17 results in tissue-specific alterations to lignification of Arabidopsis thaliana stems. Plant Cell 2011; 23:1124-37. [PMID: 21447792 PMCID: PMC3082258 DOI: 10.1105/tpc.110.082792] [Citation(s) in RCA: 335] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2010] [Revised: 02/11/2011] [Accepted: 03/14/2011] [Indexed: 05/17/2023]
Abstract
Peroxidases have been shown to be involved in the polymerization of lignin precursors, but it remains unclear whether laccases (EC 1.10.3.2) participate in constitutive lignification. We addressed this issue by studying laccase T-DNA insertion mutants in Arabidopsis thaliana. We identified two genes, LAC4 and LAC17, which are strongly expressed in stems. LAC17 was mainly expressed in the interfascicular fibers, whereas LAC4 was expressed in vascular bundles and interfascicular fibers. We produced two double mutants by crossing the LAC17 (lac17) mutant with two LAC4 mutants (lac4-1 and lac4-2). The single and double mutants grew normally in greenhouse conditions. The single mutants had moderately low lignin levels, whereas the stems of lac4-1 lac17 and lac4-2 lac17 mutants had lignin contents that were 20 and 40% lower than those of the control, respectively. These lower lignin levels resulted in higher saccharification yields. Thioacidolysis revealed that disrupting LAC17 principally affected the deposition of G lignin units in the interfascicular fibers and that complementation of lac17 with LAC17 restored a normal lignin profile. This study provides evidence that both LAC4 and LAC17 contribute to the constitutive lignification of Arabidopsis stems and that LAC17 is involved in the deposition of G lignin units in fibers.
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Affiliation(s)
- Serge Berthet
- Institut Jean Pierre Bourgin, Unité Mixte de Recherche 1318, Institut National de la Recherche Agronomique-AgroParisTech, 78026 Versailles, France
| | - Nathalie Demont-Caulet
- Institut Jean Pierre Bourgin, Unité Mixte de Recherche 1318, Institut National de la Recherche Agronomique-AgroParisTech, 78026 Versailles, France
| | - Brigitte Pollet
- Institut Jean Pierre Bourgin, Unité Mixte de Recherche 1318, Institut National de la Recherche Agronomique-AgroParisTech, 78026 Versailles, France
| | - Przemyslaw Bidzinski
- Institut Jean Pierre Bourgin, Unité Mixte de Recherche 1318, Institut National de la Recherche Agronomique-AgroParisTech, 78026 Versailles, France
| | - Laurent Cézard
- Institut Jean Pierre Bourgin, Unité Mixte de Recherche 1318, Institut National de la Recherche Agronomique-AgroParisTech, 78026 Versailles, France
| | - Phillipe Le Bris
- Institut Jean Pierre Bourgin, Unité Mixte de Recherche 1318, Institut National de la Recherche Agronomique-AgroParisTech, 78026 Versailles, France
| | - Nero Borrega
- Institut Jean Pierre Bourgin, Unité Mixte de Recherche 1318, Institut National de la Recherche Agronomique-AgroParisTech, 78026 Versailles, France
| | - Jonathan Hervé
- Institut Jean Pierre Bourgin, Unité Mixte de Recherche 1318, Institut National de la Recherche Agronomique-AgroParisTech, 78026 Versailles, France
| | - Eddy Blondet
- Unité de Recherche en Génomique Végétale, Unité Mixte de Recherche 1165, Institut National de la Recherche Agronomique-Centre National de Recherche Scientifique 8114/Université d’Evry Val d’Essonne, 91057 Evry, France
| | - Sandrine Balzergue
- Unité de Recherche en Génomique Végétale, Unité Mixte de Recherche 1165, Institut National de la Recherche Agronomique-Centre National de Recherche Scientifique 8114/Université d’Evry Val d’Essonne, 91057 Evry, France
| | - Catherine Lapierre
- Institut Jean Pierre Bourgin, Unité Mixte de Recherche 1318, Institut National de la Recherche Agronomique-AgroParisTech, 78026 Versailles, France
- Address correspondence to
| | - Lise Jouanin
- Institut Jean Pierre Bourgin, Unité Mixte de Recherche 1318, Institut National de la Recherche Agronomique-AgroParisTech, 78026 Versailles, France
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Berthet S, Triolo V, Bourrier T, Descos B, De Smet S, Berard E, Destombe S. [Eosinophilic esophagitis. Clinical presentation, allergology and treatment: a series of 22 children]. Arch Pediatr 2010; 18:7-14. [PMID: 21112193 DOI: 10.1016/j.arcped.2010.10.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2009] [Revised: 09/10/2010] [Accepted: 10/03/2010] [Indexed: 10/18/2022]
Abstract
BACKGROUND AND AIMS Eosinophilic esophagitis (EE) is a disorder characterized by severe eosinophilic infiltration of the esophagus, with dysphagia and gastroesophageal reflux disease (GERD) symptoms unresponsive to acid blockade therapy but responsive to the removal of dietary antigens. We report information relating to children diagnosed with EE in Nice, France, over a 6-year period. PATIENTS AND METHODS We conducted a retrospective study between January 1, 2004, and July 31, 2009, evaluating all children diagnosed with EE. Clinical and demographic data, endoscopic and histological findings, allergology data, and results of treatment were collected and evaluated. RESULTS A total of 22 patients, 19 males, median age 9.5 years (range: 0.8-19 years) were reviewed: 7 presented isolated dysphagia, 6 presented GERD symptoms, and 9 both dysphagia and GERD symptoms. Endoscopically, 14 had multiple esophageal white plaques, 7 had linear furrowing, 5 had circular "tracheal" rings, and 5 esophageal narrowing. The median number of esophageal eosinophils/high power field (×400) was 30 (range: 15-80). Eosinophils were localized in the distal, middle, and upper esophagus. Immunoallergy analysis findings were: high peripheral eosinophil count (74%), high total IgE level (65%), high eosinophil cationic protein (ECP) level (90%) with a median value of 69.5 μg/l and high urinary leukotriene E4 (88%). Food antigen sensitization was positive in skin-prick testing in 11 of 18 and in atopy-patch testing in 9 of 17. Dietary restriction improved clinical symptoms in 5 of 10 and local corticotherapy with viscous budesonide improved clinical symptoms in 9 out of 10. CONCLUSION EE diagnosis must be considered in children with dysphagia or GERD who do not respond to acid blockade therapy. ECP may be used to guide diagnosis. Local corticotherapy is effective.
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Affiliation(s)
- S Berthet
- Pôle enfant-adolescent, hôpital Archet-2, CHU de Nice, 151 route de St-Antoine-de-Ginestière, Nice cedex 03, France
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Berthet S, Monpoux F, Soummer AM, Bérard E, Sarles J, Badens C. [Neonatal screening for sickle cell disease at the Nice University Hospital: the last 8 years]. Arch Pediatr 2010; 17:1652-6. [PMID: 21087846 DOI: 10.1016/j.arcped.2010.09.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2010] [Revised: 08/04/2010] [Accepted: 09/20/2010] [Indexed: 10/18/2022]
Abstract
INTRODUCTION Screening for sickle cell disease, the most common of recessive autosomic hemoglobin disorders, allows detection of sickle cell disease SCD (homozygous sickle cell disease, compound heterozygote SC, and S β-thalassemia) in a target population. Our objective was to evaluate its effectiveness at the Nice University Hospital. POPULATION AND METHODS This prospective study was conducted between 1 January 2000 and 31 December 2008. The national targeted newborn screening, run together with the Guthrie test on the 3rd day of life, offered at-risk newborns (based on ethnicity and family history), allow the detection of qualitative hemoglobin abnormalities. A confirmatory test is performed when positive. Gender, ethnicity, type of hemoglobin found, zygosity, age at diagnosis, the presence at a 2nd consultation of the families identified, and acceptance of the confirmatory test were collected and analyzed. RESULTS A total of 19,775 children were born in Nice University Hospital during this period, among whom screening detected 151 hemoglobinopathies: 139 heterozygotes and 12 major sickle cell syndrome (9 SS and 3 S β-thalassemia). The prevalence of SCD on the targeted and the total population was, respectively, 1 out of 659 and 1 out of 1648 and the prevalence of heterozygotes was 1 out of 57 and 1 out of 142. The sex ratio was close to 1. Hemoglobin S predominated (74% of pathogens Hb). The Maghreb and sub-Saharan Africa were the 2 main areas of origin. One hundred and four of 151 families, including 12 cases of SCD, returned to consultation after they received a letter requesting attendance at a 2nd consultation. For 80 children, the confirmatory test was accepted. Feedback was possible for 72 of the 80 families. DISCUSSION The number of children screened is increasing, thanks to better awareness among medical staff. The prevalence of SCD and heterozygotes found in Nice University Hospital is similar to what is described in the literature. With screening, early diagnosis allows early treatment at the age of 2 months before the occurrence of complications, reducing morbidity and mortality. CONCLUSION Screening for sickle cell disease appears effective in Nice. It seems necessary to continue focusing on the importance of screening among maternity healthcare actors.
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Berthet S, Quiviger S, Kurzenne JY, Djafari M, Pradines P, Coache C. [Abdominal aortic injury in a child: seat-belt syndrome]. Arch Pediatr 2010; 17:1661-3. [PMID: 20888197 DOI: 10.1016/j.arcped.2010.08.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2009] [Revised: 12/10/2009] [Accepted: 08/11/2010] [Indexed: 11/26/2022]
Abstract
Traumatic injuries of the abdominal aorta are rare, especially in the pediatric population, but they must be sought when the clinical signs are associated with a severe traumatic context. We report the case of a 7-year-old child who presented with a partial transection of the abdominal aorta following a traffic accident. The optimal management is based on the detection of the less striking but suggestive clinical signs, such as a belt hematoma in the abdominal wall or a decreased pulse in the lower limbs, as well as a systematic precise X-ray examination, and an urgent surgical intervention. The risk is complete rupture, whose time of occurrence after the accident is unpredictable. The abdominal aorta is anatomically protected, so injury in children is traditionally associated with seat belt wear. Lesions are related to the shearing of the abdominal aorta between the spine and the seat belt.
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Affiliation(s)
- S Berthet
- Service de pédiatrie, CHI, Fréjus-Saint-Raphaël, France
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Allenet B, Bedouch P, Baudrant M, Federspiel I, Berthet S, Detavernier M, Rey C, Calop J, Foroni L. [From medication history to pharmaceutical anamnesis: a standardised patient interview by clinical pharmacists in hospital]. J Pharm Belg 2010:39-46. [PMID: 20626111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Affiliation(s)
- B Allenet
- Pô1e Pharmacie, Centre Hospitalo-universitaire de Grenoble & UFR de Pharmacie, Université Joseph Fourier, Grenoble.
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Lot A, Oussadon S, Beauchet A, Gnamien S, Espinasse F, Gauthier M, Berthet S, Cottard-Boulle B, Saiag P, Mahéa E. Prévalence et prise en charge des plaies dans un centre hospitalier universitaire. Rev Epidemiol Sante Publique 2009. [DOI: 10.1016/j.respe.2009.02.133] [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: 10/20/2022] Open
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Lesn J, Berthet S, Binard S, Rouxel A, Humbert F. Changes in culturability and virulence of Salmonella typhimurium during long-term starvation under desiccating conditions. Int J Food Microbiol 2000; 60:195-203. [PMID: 11016609 DOI: 10.1016/s0168-1605(00)00311-1] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The survival of Salmonella typhimurium under desiccation and starvation conditions commonly associated with farm buildings was investigated in a desiccation model system: filtration onto polycarbonate membranes placed in a sealed desiccator with 0.0067 g/m3 absolute humidity. Heterogeneities within bacterial populations in relation to time of desiccation were investigated on a single-cell basis by epifluorescence microscopy coupled with an image analysis system in conjunction with fluorescent dyes Chemchrome V6 and DAPI. Changes in cellular states were compared to the results of plate counts (colony forming units, CFU) on selective (modified semi-solid Rappaport Vassiliadis (MSRV)) and non-selective (nutrient agar (NA) and R2A agar) media, and to the measurements of infectivity and virulence using two animal models (chicks and mice). During 9 weeks of experimental desiccation, total cell counts (DAPI) of starved S. typhimurium remained stable, as did esterase activity (Chemchrome V6), but DAPI fluorescence intensity decreased slowly. Bacterial cells entered gradually into non-culturable states (decrease of CFU counts on MSRV, NA and R2A agar media) and the total loss of culturability on NA (defined as probability of presence of 1 CFU on the membrane inferior to 10 (-6)) was obtained after 9 weeks. Loss of chick infectivity and mice virulence in animal models occurred more rapidly, within three weeks of experimental desiccation.
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Affiliation(s)
- J Lesn
- Laboratoire d'Etudes et de Recherche en Environnement et Santé, Ecole Nationale de la Santé Publique, Rennes, France.
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Berthet S, Nykyri LM, Bravo J, Mate MJ, Berthet-Colominas C, Alzari PM, Koller F, Fita I. Crystallization and preliminary structural analysis of catalase A from Saccharomyces cerevisiae. Protein Sci 1997; 6:481-3. [PMID: 9041655 PMCID: PMC2143643 DOI: 10.1002/pro.5560060229] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Yeast peroxisomal catalase A, obtained at high yields by over expression of the C-terminally modified gene from a 2 mu-plasmid, has been crystallized in a form suitable for high resolution X-ray diffraction studies. Brownish crystals with bipyrimidal morphology and reaching ca. 0.8 mm in size were produced by the hanging drop method using ammonium sulphate as precipitant. These crystals diffract better than 2.0 A resolution and belong to the hexagonal space group P6(1)22 with unit cell parameters a = b = 184.3 A and c = 305.5 A. An X-ray data set with 76% completeness at 3.2 A resolution was collected in a rotating anode generator using mirrors to improve the collimation of the beam. An initial solution was obtained by molecular replacement only when using a beef liver catalase tetramer model in which fragments with no sequence homology had been omitted, about 150 residues per subunit. In the structure found a single molecule of catalase A (a tetramer with accurate 222 molecular symmetry) is located in the asymmetric unit of the crystal with an estimated solvent content of about 61%. The preliminary analysis of the structure confirms the absence of a carboxy terminal domain as the one found in the catalase from Penicillium vitalae, the only other fungal catalase structure available. The NADPH binding site appears to be involved in crystal contacts, suggesting that heterogeneity in the occupancy of the nucleotide can be a major difficulty during crystallization.
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Spahr L, Berthet S. [Coxitis in Lyme disease]. Rev Med Suisse Romande 1990; 110:1033-8. [PMID: 2277886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- L Spahr
- Service de chirurgie, Hôpital de la Providence, Neuchâtel
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de Roguin B, Leyvraz PF, Berthet S. [Proximal fractures of the femur. Economic analysis of hospital treatment]. Schweiz Med Wochenschr 1988; 118:89-93. [PMID: 3344413] [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] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The cost of hospital treatment of cervical and intertrochanteric fractures of femur is studied in 218 patients aged 70 and over, treated during 1985 in a specialized university department. Real costs show little difference from contractual prices as established by the hospital administration. They depend mainly on the length of hospital stay (a function of the type of treatment) and only indirectly on the type of fracture. The only hope of reducing costs is to shorten the number of days spent by these patients in costly university departments. The physician should therefore try to use methods of treatment that render patients rapidly independent, but the administration should provide enough rehabilitation wards and homes to admit semi-dependent patients rapidly after acute care of the fracture and of any associated pathology.
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Affiliation(s)
- B de Roguin
- Service universitaire d'orthopédie et de traumatologie de l'appareil moteur, Hôpital orthopédique, Lausanne
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Leyvraz P, Bachmann F, Vuilleumier B, Berthet S, Bohnet J, Haller E. Adjusted subcutaneous heparin versus heparin plus dihydroergotamine in prevention of deep vein thrombosis after total hip arthroplasty. J Arthroplasty 1988; 3:81-6. [PMID: 3361324 DOI: 10.1016/s0883-5403(88)80056-1] [Citation(s) in RCA: 12] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
In a prospective randomized study, two different antithrombotic regimens were compared with regard to their effects on the incidence of deep vein thrombosis (DVT) in 102 patients undergoing elective total hip arthroplasty. Fifty patients (group 1) received heparin subcutaneously three times daily in doses adjusted as a function of activated partial thromboplastin time (APTT), and 52 patients (group 2) received a fixed dose of 5,000 IU heparin plus 0.5 mg dihydroergotamine twice daily. Both treatments were started 2 days before operation and continued for 7-9 days after operation, when venography of the operated leg was performed in all patients. The overall incidence of DVT was 22% in group 1 and 19.6% in group 2. Eight patients (16%) in group 1 and four (7.6%) in group 2 developed proximal DVT. These differences were not statistically significant. Hemorrhagic complications occurred more frequently in group 1. Heparin plus dihydroergotamine is a simple and effective method of preventing DVT in patients undergoing total hip arthroplasty. Daily APTT-adjusted subcutaneous heparin remains the best method of prevention of DVT in patients with contraindications to the use of dihydroergotamine and those with two or more DVT risk factors.
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Affiliation(s)
- P Leyvraz
- Orthopaedic Hospital, Lausanne, Switzerland
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