1
|
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%).
Collapse
Affiliation(s)
- G Bertrand
- Laboratoire HLA-HPA, EFS Bretagne, rue Pierre-Jean-Gineste, BP 91614, 35016 Rennes cedex, France.
| | -
- Laboratoire HLA-HPA, EFS Bretagne, rue Pierre-Jean-Gineste, BP 91614, 35016 Rennes cedex, France
| |
Collapse
|
2
|
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]
|
3
|
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.
Collapse
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
| | | |
Collapse
|
4
|
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.
Collapse
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
| |
Collapse
|
5
|
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]
|
6
|
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]
|
7
|
|
8
|
|
9
|
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
| |
Collapse
|
10
|
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.
Collapse
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.
| |
Collapse
|
11
|
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.
Collapse
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.
| |
Collapse
|
12
|
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]
|
13
|
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
| |
Collapse
|
14
|
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.
Collapse
Affiliation(s)
- G Bardy
- Département de Pharmacologie Médicale et Toxicologie, Hôpital Lapeyronie, CHRU de Montpellier, Montpellier, France
| | | | | | | | | | | | | | | | | | | |
Collapse
|
15
|
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
| |
Collapse
|
16
|
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]
|
17
|
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]
|
18
|
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]
|
19
|
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]
|
20
|
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]
|
21
|
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.
Collapse
Affiliation(s)
- G Bertrand
- Platelet Immunology Unit, INTS, Paris, France.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
22
|
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
|
23
|
Linglart A, Fryssira H, Hiort O, Holterhus PM, Perez de Nanclares G, Argente J, Heinrichs C, Kuechler A, Mantovani G, Leheup B, Wicart P, Chassot V, Schmidt D, Rubio-Cabezas Ó, Richter-Unruh A, Berrade S, Pereda A, Boros E, Muñoz-Calvo MT, Castori M, Gunes Y, Bertrand G, Bougnères P, Clauser E, Silve C. PRKAR1A and PDE4D mutations cause acrodysostosis but two distinct syndromes with or without GPCR-signaling hormone resistance. J Clin Endocrinol Metab 2012; 97:E2328-38. [PMID: 23043190 DOI: 10.1210/jc.2012-2326] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [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: 01/11/2023]
Abstract
CONTEXT Acrodysostosis is a rare skeletal dysplasia that is associated with multiple resistance to G protein-coupled receptor (GPCR) signaling hormones in a subset of patients. Acrodysostosis is genetically heterogeneous because it results from heterozygous mutations in PRKAR1A or PDE4D, two key actors in the GPCR-cAMP-protein kinase A pathway. OBJECTIVE Our objective was to identify the phenotypic features that distinguish the two genotypes causing acrodysostosis. PATIENTS AND METHODS Sixteen unrelated patients with acrodysostosis underwent a candidate-gene approach and were investigated for phenotypic features. RESULTS All patients had heterozygous de novo mutations. Fourteen patients carried a PRKAR1A mutation (PRKAR1A patients), five each a novel PRKAR1A mutation (p.Q285R, p.G289E, p.A328V, p.R335L, or p.Q372X), nine the reported PRKAR1A p.R368X mutation; two patients harbored a mutation in PDE4D (PDE4D patients) (one novel mutation, p.A227S; one reported, p.E590A). All PRKAR1A, but none of the PDE4D mutated patients were resistant to PTH and TSH. Two PRKAR1A patients each with a novel mutation presented a specific pattern of brachydactyly. One PDE4D patient presented with acroskyphodysplasia. Additional phenotypic differences included mental retardation in PDE4D patients. In addition, we report the presence of pigmented skin lesions in PRKAR1A and PDE4D patients, a feature not yet described in the acrodysostosis entity. CONCLUSIONS All PRKAR1A and PDE4D patients present similar bone dysplasia characterizing acrodysostosis. Phenotypic differences, including the presence of resistance to GPCR-cAMP signaling hormones in PRKAR1A but not PDE4D patients, indicate phenotype-genotype correlations and highlight the specific contributions of PRKAR1A and PDE4D in cAMP signaling in different tissues.
Collapse
Affiliation(s)
- Agnès Linglart
- Institut National de la Santé et de la Recherche Médicale Unité 986 et Centre de Reference des Maladies Rares du Phosphate et du Calcium, Hôpital de Bicêtre, 94276 Le Kremlin Bicêtre Cedex, France
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
24
|
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.
Collapse
Affiliation(s)
- E Grand
- Tereos Syral, 67390 Marckolsheim, France
| | | | | | | | | |
Collapse
|
25
|
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]
|
26
|
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.
| | | | | | | | | |
Collapse
|
27
|
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]
|
28
|
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]
|
29
|
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.
Collapse
Affiliation(s)
- T Spica
- Department of Dermatology, University of L'Aquila, L'Aquila, Italy
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
30
|
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]
|
31
|
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]
|
32
|
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]
|
33
|
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
|
34
|
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.
Collapse
Affiliation(s)
- E Labussiere
- Institut National de la Recherche Agronomique, UMR1079 SENAH, F-35000 Rennes, France
| | | | | | | | | |
Collapse
|
35
|
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]
|
36
|
Soufir N, Ollivaud L, Bertrand G, Lacapère JJ, Descamps V, Vitoux D, Lebbe C, Wolkenstein P, Dupin N, Saiag P, Basset-Seguin N, Grandchamp B. A French CDK4-positive melanoma family with a co-inherited EDNRB mutation. J Dermatol Sci 2007; 46:61-4. [PMID: 17223014 DOI: 10.1016/j.jdermsci.2006.11.016] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2006] [Revised: 11/29/2006] [Accepted: 11/30/2006] [Indexed: 01/23/2023]
|
37
|
|
38
|
|
39
|
|
40
|
Bertrand G, Martageix C, Jallu V, Vitry F, Kaplan C. Predictive value of sequential maternal anti-HPA-1a antibody concentrations for the severity of fetal alloimmune thrombocytopenia. J Thromb Haemost 2006; 4:628-37. [PMID: 16460445 DOI: 10.1111/j.1538-7836.2006.01809.x] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.0] [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: 11/29/2022]
Abstract
BACKGROUND Fetal/neonatal alloimmune thrombocytopenia results from maternal immunization against fetal platelet alloantigens (HPAs), and the major risk is intracranial hemorrhage. The severity of thrombocytopenia increases in subsequent pregnancies, and antenatal therapy has been developed. Until now, the fetal status can only be assessed by fetal blood sampling, which carries a risk of fetal loss or premature delivery. OBJECTIVES To develop non-invasive methods to gain information on the fetal condition. PATIENTS/METHODS Quantification of the maternal anti-HPA-1a alloantibody concentration was performed with a standardized monoclonal antibody-specific immobilization of platelet antigens (MAIPA) procedure for 43 mothers. A correlation between this concentration and the fetal/neonatal platelet counts was studied. RESULTS (i) Before antenatal therapy, there was a significant correlation between maternal anti-HPA-1a concentrations > or =250 AU mL(-1) and fetal thrombocytopenia (2-66 x 10(9) L(-1)) whatever the gestational age (Fisher's exact test P = 0.0021). (ii) During subsequent pregnancies, we observed a decrease of the maternal anti-HPA-1a concentration for 14/19 women. Just before delivery, all women had anti-HPA-1a concentrations <250 AU mL(-1). In four cases, there was a therapy failure and the severely thrombocytopenic babies required postnatal therapy. CONCLUSION The maternal anti-HPA-1a concentration could provide obstetricians with clinically useful information concerning the appropriateness and the timing of invasive monitoring procedures. However, though we observed a tendency toward a decrease in maternal antibody concentration after treatment, this finding does not allow us to draw any conclusions on the effectiveness of therapy.
Collapse
Affiliation(s)
- G Bertrand
- INTS, Platelet Immunology Unit, Paris, France
| | | | | | | | | |
Collapse
|
41
|
Bakass M, Bellat JP, Mokhlisse A, Bertrand G. The adsorption of water vapor on super absorbent product at low temperatures and low mass. J Appl Polym Sci 2006. [DOI: 10.1002/app.23568] [Citation(s) in RCA: 8] [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: 11/05/2022]
|
42
|
Jannot AS, Meziani R, Bertrand G, Gérard B, Descamps V, Archimbaud A, Picard C, Ollivaud L, Basset-Seguin N, Kerob D, Lanternier G, Lebbe C, Saiag P, Crickx B, Clerget-Darpoux F, Grandchamp B, Soufir N. Allele variations in the OCA2 gene (pink-eyed-dilution locus) are associated with genetic susceptibility to melanoma. Eur J Hum Genet 2005; 13:913-20. [PMID: 15889046 DOI: 10.1038/sj.ejhg.5201415] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.2] [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: 01/10/2023] Open
Abstract
The occuloalbinism 2 (OCA2) gene, localized at 15q11, encodes a melanosomal transmembrane protein that is involved in the most common form of human occulo-cutaneous albinism, a human genetic disorder characterized by fair pigmentation and susceptibility to skin cancer. We wondered whether allele variations at this locus could influence susceptibility to malignant melanoma (MM). In all, 10 intragenic single-nucleotide polymorphisms (SNPs) were genotyped in 113 patients with melanomas and in 105 Caucasian control subjects with no personal or family history of skin cancer. By comparing allelic distribution between cases and controls, we show that MM and OCA2 are associated (p value=0.030 after correction for multiple testing). Then, a recently developed strategy, the 'combination test' enabled us to show that a combination formed by two SNPs was most strongly associated to MM, suggesting a possible interaction between intragenic SNPs. In addition, the role of OCA2 on MM risk was also detected using a logistic model taking into account the presence of variants of the melanocortin 1 receptor gene (MC1R, a key pigmentation gene) and all pigmentation characteristics as melanoma risk factors. Our data demonstrate that a second pigmentation gene, in addition to MC1R, is involved in genetic susceptibility to melanoma.
Collapse
Affiliation(s)
- Anne-Sophie Jannot
- Unite INSERM 535 'Génétique Epidémiologique et Structure des Populations Humaines', Hôpital Paul Brousse, Villejuif, France
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
43
|
Sirhan D, Hasan A, Bertrand G. Classification pratique des angiomes caverneux de la moelle. Neurochirurgie 2005. [DOI: 10.1016/s0028-3770(05)83606-9] [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: 11/28/2022]
|
44
|
Meziani R, Descamps V, Gérard B, Matichard E, Bertrand G, Archimbaud A, Ollivaud L, Saiag P, Lebbé C, Basset-Seguin N, Alberti C, Crickx B, Grandchamp B, Soufir N. Association study of the g.8818A>G polymorphism of the human agouti gene with melanoma risk and pigmentary characteristics in a French population. J Dermatol Sci 2005; 40:133-6. [PMID: 16183259 DOI: 10.1016/j.jdermsci.2005.08.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2005] [Revised: 07/23/2005] [Accepted: 08/08/2005] [Indexed: 10/25/2022]
|
45
|
Soufir N, Meziani R, Lacapère JJ, Bertrand G, Fumeron F, Bourillon A, Gérard B, Descamps V, Crickx B, Ollivaud L, Archimbaud A, Lebbe C, Basset-Seguin N, Saiag P, Grandchamp B. Association Between Endothelin Receptor B Nonsynonymous Variants and Melanoma Risk. ACTA ACUST UNITED AC 2005; 97:1297-301. [PMID: 16145050 DOI: 10.1093/jnci/dji253] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [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: 11/13/2022]
Abstract
The endothelin signaling pathway plays a crucial role in melanocyte differentiation and migration. In this study, we investigated whether germline mutations of endothelin receptor B (EDNRB), a gene involved in Hirschsprung disease (HSCR), could also predispose for malignant melanoma (MM). The coding region of EDNRB was sequenced in 137 MM patients and in 130 ethnically matched Caucasian control subjects. Six nonsynonymous EDNRB variants were found in 15 patients (11%), but only two were found in four control subjects (3%, odds ratio [OR] = 3.87, 95% confidence interval [CI] = 1.25 to 12; P = .012). Overall, 14 out of 15 MM patients carried EDNRB mutations reported in HSCR, some of which had previously been shown to lead to loss of function. In multivariable logistic regression analysis including skin type, eye and hair color, number of nevi, and dorsal lentigines (freckles), the association between EDNRB mutations and MM risk remained statistically significant (OR = 19.9, 95% CI = 1.34 to 296.2; P = .03). Our data strongly suggest that EDNRB is involved in predisposition for two different multigenic disorders, HSCR and melanoma.
Collapse
Affiliation(s)
- Nadem Soufir
- Laboratoire de Biochimie Hormonale et Génétique, Hôpital Bichat-Claude Bernard, AP-HP, Faculté de Médecine, Paris VII, Paris, France.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Bertrand G, Roy P, Filiatre C, Coddet C. Spray-dried ceramic powders: A quantitative correlation between slurry characteristics and shapes of the granules. Chem Eng Sci 2005. [DOI: 10.1016/j.ces.2004.04.042] [Citation(s) in RCA: 100] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
47
|
Berard I, Kraimps JL, Savagner F, Murat A, Renaudin K, Nicolli-Sire P, Bertrand G, Moisan JP, Bezieau S. Germline-sequence variants S836S and L769L in the RE arranged during Transfection (RET) proto-oncogene are not associated with predisposition to sporadic medullary carcinoma in the French population. Clin Genet 2004; 65:150-2. [PMID: 14984475 DOI: 10.1111/j.0009-9163.2004.00172.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
|
48
|
Bertrand G, Duprat E, Lefranc MP, Marti J, Coste J. Characterization of human FCGR3B*02 (HNA-1b, NA2) cDNAs and IMGT standardized description of FCGR3B alleles. ACTA ACUST UNITED AC 2004; 64:119-31. [PMID: 15245367 DOI: 10.1111/j.1399-0039.2004.00259.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [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: 11/30/2022]
Abstract
The low-affinity Fc gamma receptor IIIb (Fc gamma RIIIb and CD16b) is constituted by a unique FCGR3B polypeptide chain that comprises two extracellular immunoglobulin-like domains, and is expressed as a glycosylphosphatidyl inositol-anchored receptor on the neutrophils. The FCGR3B chain bears allotypes that define the human neutrophil antigen-1 (HNA-1 and NA) system involved in major post-transfusional reactions. FCGR3B is highly homologous to FCGR3A, which is expressed as a transmembrane receptor on natural killer cells and monocytes/macrophages. Its transcription products were not yet fully characterized. In the present work, we sequenced FCGR3B cDNAs with complete 3' untranslated region from purified granulocytes of HNA-1b/HNA-1b (NA2/NA2) genotyped donors. We characterized two FCGR3B cDNAs of different lengths corresponding to two polyadenylation sites. This result was corroborated by data raised by serial analysis of gene expression (SAGE). FCGR3B allele polymorphisms, from this article [FCGR3B*02 (HNA-1b, NA2)] and from the literature, are described for the first time according to the IMGT standardized nomenclature and to the IMGT unique numbering for C-LIKE-DOMAIN (http://imgt.cines.fr). These rules, described in the IMGT Scientific chart, are based on the IMGT-ONTOLOGY concepts. IMGT allele alignments and IMGT Collier de Perles graphical two-dimensional representations are provided for the two Ig-like domains (or C-LIKE-DOMAINs) [D1] and [D2] of FCGR3B*02. The standardized description of FCGR3B allele polymorphisms was approved by the IMGT Nomenclature Committee (IMGT-NC) and is freely available in IMGT repertoire at IMGT, http://imgt.cines.fr.
Collapse
Affiliation(s)
- G Bertrand
- Laboratoire R & D, Agents Transmissibles par transfusion, Etablissement Français du Sang Pyrénées-Méditerranée, Montpellier, France
| | | | | | | | | |
Collapse
|
49
|
Soufir N, Lacapere JJ, Bertrand G, Matichard E, Meziani R, Mirebeau D, Descamps V, Gérard B, Archimbaud A, Ollivaud L, Bouscarat F, Baccard M, Lanternier G, Saïag P, Lebbé C, Basset-Seguin N, Crickx B, Cave H, Grandchamp B. Germline mutations of the INK4a-ARF gene in patients with suspected genetic predisposition to melanoma. Br J Cancer 2004; 90:503-9. [PMID: 14735200 PMCID: PMC2409576 DOI: 10.1038/sj.bjc.6601503] [Citation(s) in RCA: 30] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Germline anomalies of the INK4a-ARF and Cdk4 genes were sought in a series of 89 patients suspected of having a genetic predisposition to melanoma. Patients were selected based on the following criteria: (a) familial melanoma (23 cases), (b) multiple primary melanoma (MPM; 18 cases), (c) melanoma and additional unrelated cancers (13 cases), (d) age at diagnosis less than 25 years (21 cases), and (e) nonphoto-induced melanoma (NPIM; 14 cases). Mutations of INK4a-ARF and Cdk4 were characterised by automated sequencing, and germline deletions of INK4a-ARF were also examined by real-time quantitative PCR. Seven germline changes of INK4a-ARF, five of which were novel, were found in seven patients (8%). Four were very likely to be pathogenic mutations and were found in three high-risk melanoma families and in a patient who had a pancreatic carcinoma in addition to melanoma. Three variants of uncertain significance were detected in one MPM patient, one patient <25 years, and one NPIM patient. No germline deletion of INK4a-ARF was found in 71 patients, and no Cdk4 mutation was observed in the 89 patients. This study confirms that INK4a-ARF mutations are infrequent outside stringent familial criteria, and that germline INK4a-ARF deletions are rarely involved in genetic predisposition to melanoma.
Collapse
Affiliation(s)
- N Soufir
- Laboratoire de Biochimie Hormonale et Génétique, Hôpital Bichat-Claude Bernard, 46 rue henri Huchard, Paris 75018, France.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
50
|
Matichard E, Verpillat P, Meziani R, Gérard B, Descamps V, Legroux E, Burnouf M, Bertrand G, Bouscarat F, Archimbaud A, Picard C, Ollivaud L, Basset-Seguin N, Kerob D, Lanternier G, Lebbe C, Crickx B, Grandchamp B, Soufir N. Melanocortin 1 receptor (MC1R) gene variants may increase the risk of melanoma in France independently of clinical risk factors and UV exposure. J Med Genet 2004; 41:e13. [PMID: 14757863 PMCID: PMC1735671 DOI: 10.1136/jmg.2003.011536] [Citation(s) in RCA: 104] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|