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Azémard C, Fauré MC, Stankic S, Chenot S, Ibrahim H, Laporte L, Fontaine P, Goldmann M, de Viguerie L. Influence of Unsaturations on the Organization and Air Reactivity of Triglyceride Monolayers. Langmuir 2022; 38:711-718. [PMID: 34985293 DOI: 10.1021/acs.langmuir.1c02613] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The behavior of Langmuir monolayers of saturated and unsaturated C18 triglycerides (TAGs) was studied as two-dimensional (2D) models for paint systems at the air-water interface or transferred onto solid films. The organization of saturated tristearin (C18:0) monolayer was probed thanks to grazing incidence X-ray diffraction: one observes a hexagonal packing of the chains perpendicular to the air-water interface, in contrast to what is described in the literature. Conversely, the mono- and polyunsaturated TAGs (triolein C18:1, trilinolein C18:2, and trilinolenin C18:3) monolayers do not present any organization at the air-water interface but do exhibit peculiar reactivity regarding the air atmosphere. The obtained results derived from the evolution of surface pressure-molecular area isotherms and monolayer compressibility under different atmospheres over time, combined with ultrahigh-vacuum infrared (UHV-FTIR) spectroscopy, showed the adsorption of O2 molecules in the monolayer together with chemical reactions with hydrocarbon chains. The kinetic effect of lead ions, known to be efficient siccative agents in oil paints, was also assessed: the addition of Pb2+ in the subphase induces an increase of the O2 adsorption.
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Affiliation(s)
- C Azémard
- Sorbonne Université, CNRS UMR 8220, LAMS, 4 place Jussieu, 75252 Paris cedex 05, France
| | - M C Fauré
- Sorbonne Université, CNRS UMR 7588, Institut des NanoSciences de Paris INSP, 4 place Jussieu, 75252 Paris cedex 05, France
- UFR de Sciences Fondamentales et Biomédicales, Université de Paris, 45 rue des Saints-Pères, 75006 Paris, France
| | - S Stankic
- Sorbonne Université, CNRS UMR 7588, Institut des NanoSciences de Paris INSP, 4 place Jussieu, 75252 Paris cedex 05, France
| | - S Chenot
- Sorbonne Université, CNRS UMR 7588, Institut des NanoSciences de Paris INSP, 4 place Jussieu, 75252 Paris cedex 05, France
| | - H Ibrahim
- Sorbonne Université, CNRS UMR 7588, Institut des NanoSciences de Paris INSP, 4 place Jussieu, 75252 Paris cedex 05, France
| | - L Laporte
- Sorbonne Université, CNRS UMR 8220, LAMS, 4 place Jussieu, 75252 Paris cedex 05, France
| | - P Fontaine
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin BP48, 91192 Gif-Sur-Yvette, France
| | - M Goldmann
- Sorbonne Université, CNRS UMR 7588, Institut des NanoSciences de Paris INSP, 4 place Jussieu, 75252 Paris cedex 05, France
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin BP48, 91192 Gif-Sur-Yvette, France
- UFR de Sciences Fondamentales et Biomédicales, Université de Paris, 45 rue des Saints-Pères, 75006 Paris, France
| | - L de Viguerie
- Sorbonne Université, CNRS UMR 8220, LAMS, 4 place Jussieu, 75252 Paris cedex 05, France
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Riveline JP, Vergés B, Detournay B, Picard S, Benhamou PY, Bismuth E, Bordier L, Jeandidier N, Joubert M, Roussel R, Sola-Gazagnes A, Bonnefond A, Clavel S, Velayoudom FL, Beltrand J, Hanaire H, Fontaine P, Thivolet C, Servy H, Tubiana S, Lion S, Gautier JF, Larger E, Vicaut E, Sablone L, Fagherazzi G, Cosson E. Design of a prospective, longitudinal cohort of people living with type 1 diabetes exploring factors associated with the residual cardiovascular risk and other diabetes-related complications: The SFDT1 study. Diabetes Metab 2021; 48:101306. [PMID: 34813929 DOI: 10.1016/j.diabet.2021.101306] [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] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 10/10/2021] [Accepted: 10/13/2021] [Indexed: 11/25/2022]
Abstract
Type 1 diabetes mellitus (T1DM) is associated with a high risk of cardiovascular (CV) complications, even after controlling for traditional CV risk factors. Therefore, determinants of the residual increased CV morbidity and mortality remain to be discovered. This prospective cohort of people living with T1DM in France (SFDT1) will include adults and children aged over six years living with T1DM, recruited throughout metropolitan France and overseas French departments and territories. The primary objective is to better understand the parameters associated with CV complications in T1DM. Clinical data and biobank samples will be collected during routine visits every three years. Data from connected tools, including continuous glucose monitoring, will be available during the 10-year active follow-up. Patient-reported outcomes, psychological and socioeconomic information will also be collected either at visits or through web questionnaires accessible via the internet. Additionally, access to the national health data system (Health Data Hub) will provide information on healthcare and a passive 20-year medico-administrative follow-up. Using Health Data Hub, SFDT1 participants will be compared to non-diabetic individuals matched on age, gender, and residency area. The cohort is sponsored by the French-speaking Foundation for Diabetes Research (FFRD) and aims to include 15,000 participants.
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Affiliation(s)
- J P Riveline
- Department of Diabetology and Endocrinology, Lariboisiere Hospital, Assistance Publique - Hôpitaux de Paris, Lariboisière Hospital, 2 rue Ambroise Paré, Paris 75010, France; Unite INSERM U1138 Immunity and Metabolism in Diabetes, ImMeDiab Team, Centre de Recherches des Cordeliers, and Universite de Paris, Paris, France.
| | - B Vergés
- Department of Endocrinology-Diabetology, INSERM LNC UMR1231, University of Burgundy, Dijon, France
| | - B Detournay
- CEMKA, 43 boulevard du Maréchal Joffre, Bourg-la-Reine, France
| | - S Picard
- Endocrinology and Diabetes, Point Medical, Rond-Point de la Nation, Dijon 21000, France
| | - P Y Benhamou
- INSERM U1055, LBFA, Endocrinologie, CHU Grenoble Alpes, Université Grenoble Alpes, Grenoble, France
| | - E Bismuth
- Hôpital Universitaire Robert-Debré, Service d'Endocrinologie Diabétologie Pédiatrique, Université de Paris, Paris F-75019, France
| | - L Bordier
- Department of Diabetology and Endocrinology, Begin Military Hospital, Saint Mandé, France
| | - N Jeandidier
- Department of Endocrinology, Diabetes, Nutrition, Hospices Civils Strasbourg, UdS, Strasbourg 67000, France
| | - M Joubert
- Diabetes Care Unit - Caen University Hospital - UNICAEN, Caen, France
| | - R Roussel
- Department of Diabetology, Endocrinology, and Nutrition, Bichat-Claude Bernard Hospital, Paris,France; Unite INSERM U1138 Immunity and Metabolism in Diabetes, ImMeDiab Team, Centre de Recherches des Cordeliers, and Universite de Paris, Paris, France
| | - A Sola-Gazagnes
- Department of Diabetology, Cochin Hospital, Assistance Publique - Hôpitaux de Paris, Paris, France
| | - A Bonnefond
- Université de Lille, Inserm UMR1283, CNRS UMR8199, Institut Pasteur de Lille, CHU de Lille, Lille, France
| | - S Clavel
- Department of Diabetology Endocrinology Hotel Dieu Le Creusot, France
| | - F L Velayoudom
- Department of Diabetology and Endocrinology, University Hospital of Guadeloupe, Inserm UMR1283, CNRS UMR8199, European Genomic Institute for Diabetes (EGID), Institut Pasteur de Lille, Lille University Hospital, Lille 59000, France
| | - J Beltrand
- Endocrinologie, Gynécologie et Diabétologie Pédiatrique, APHP Centre, Hôpital Universitaire Necker Enfants Malades, Université de Paris - Inserm U1016, Institut Cochin, Paris, France
| | - H Hanaire
- Department of Diabetology, University Hospital of Toulouse, University of Toulouse, France
| | - P Fontaine
- Department of Endocrinology, Diabetology and Nutrition University Hospital of Lille, University of Lille, France
| | - C Thivolet
- Center for Diabetes DIAB-eCARE, Hospices Civils de Lyon and Lyon 1 University, Lyon France
| | - H Servy
- e-health Services Sanoïa, 188 av 2nd DB, Gémenos 13420, France
| | - S Tubiana
- AP-HP, Hôpital Bichat, Centre de Ressources Biologiques, Paris F-75018, France
| | - S Lion
- Société Francophone du Diabète, Paris, France
| | - Jean-François Gautier
- Department of Diabetology and Endocrinology, Lariboisiere Hospital, Assistance Publique - Hôpitaux de Paris, Lariboisière Hospital, 2 rue Ambroise Paré, Paris 75010, France; Unite INSERM U1138 Immunity and Metabolism in Diabetes, ImMeDiab Team, Centre de Recherches des Cordeliers, and Universite de Paris, Paris, France
| | - Etienne Larger
- AP-HP.Centre-Université de Paris, INSERM U1016, Institut Cochin Paris, France
| | - E Vicaut
- AP-HP, Hôpital F.Widal, Clinical Trial Unit, Paris 75010, France
| | - L Sablone
- Fondation Francophone Pour la Recherche sur le Diabète, 60 rue Saint Lazare, Paris 75009, France
| | - G Fagherazzi
- Department of Population Health, Deep Digital Phenotyping Research Unit, 1 AB rue Thomas Edison, Strassen, Luxembourg
| | - E Cosson
- Department of Endocrinology-Diabetology-Nutrition, CRNH-IdF, CINFO, AP-HP, Avicenne Hospital, Paris 13 University, Bobigny, France; UMR 557 INSERM/U11125 INRAE/CNAM / Université Paris 13, Unité de Recherche Epidémiologique Nutritionnelle, Paris 13 University Sorbonne Paris Cité, Bobigny, France
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Żarski D, Król J, Ledoré Y, Sarosiek B, Dryl K, Gomułka P, Palińska-Żarska K, Toomey L, Fontaine P, Milla S. Constant darkness negatively affects the outcome of hormonally induced reproduction in cultured Eurasian perch females. Animal 2021; 15:100340. [PMID: 34450509 DOI: 10.1016/j.animal.2021.100340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 07/21/2021] [Accepted: 07/23/2021] [Indexed: 10/20/2022] Open
Abstract
This study aimed to assess the effect of constant darkness applied to fish during controlled breeding on reproductive traits in domesticated females of Eurasian perch. Based on the assumption that keeping fish in constant darkness during the reproduction operation may reduce stress, suspected to be responsible for variable spawning effectiveness in this species. Two conditions were assessed (16 h light per day [group 16L] and constant darkness [group 0L], two tank replicates per condition). The reproductive protocol involved a 7-day-long adaptation period for group 0L where photoperiod was reduced by 2.3 h a day down to constant darkness. After the adaptation period, two hormone injections (salmon gonadoliberin analogue) were applied to both groups: priming (10 µg/kg) and resolving (25 µg/kg) with a 7-day interval between them. During the study, morphometric indices were recorded and blood, brain, and pituitary samples were collected to assess stress markers and determine hypothalamic-pituitary-gonadal axis functioning via measuring blood plasma hormones, as well as gonadoliberin and gonadotropins (luteinising hormone [LH] and follicle-stimulating hormone [FSH]) transcript abundance (n = 7 for each group at each sampling point). In addition, kinetics of the final oocyte maturation (FOM) process, ovulation rate, and egg quality of each group was monitored (n = 12 for each group). The results indicated that there were no differences in terms of morphometry, FOM kinetics, and most stress indices between groups throughout the experiment, except haematocrit, which increased immediately following the acclimation period in fish kept in darkness. Constant darkness negatively affected plasma levels of 17α,20β-dihydroxy-4-pregnen-3-one (DHP) and LH transcript expression at the time of the second hormone injection. This indicated that exposure to constant darkness negatively affected priming of the hormonal dose applied, resulted in the disruption of ovulation, and reduced ovulation rates (50%) for group 0L, as compared to 16L (91%). The findings of this study clearly indicate that constant darkness may have significant deleterious effects on reproductive traits throughout out-of-season induced, hormonally supported, controlled reproduction. Therefore, we advise against the use of constant darkness when managing broodstock reproduction in domesticated Eurasian perch.
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Affiliation(s)
- D Żarski
- Department of Gametes and Embryo Biology, Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, ul. Tuwima 10, 10-748 Olsztyn, Poland.
| | - J Król
- Department of Salmonid Research, The Stanisław Sakowicz Inland Fisheries Institute, Oczapowskiego 10, 10-719 Olsztyn, Poland
| | - Y Ledoré
- University of Lorraine, INRAE, UR AFPA, Faculty of Science and Technology, Boulevard des Aiguillettes, F-54506 Vandoeuvre-Lés-Nancy, France
| | - B Sarosiek
- Department of Gametes and Embryo Biology, Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, ul. Tuwima 10, 10-748 Olsztyn, Poland
| | - K Dryl
- Department of Gametes and Embryo Biology, Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, ul. Tuwima 10, 10-748 Olsztyn, Poland
| | - P Gomułka
- Department of Ichthyology and Aquaculture, Faculty of Animal Bioengineering, University of Warmia and Mazury, Oczapowskiego 2, 10-719 Olsztyn, Poland
| | - K Palińska-Żarska
- Department of Ichthyology, Hydrobiology and Ecology of Waters, The Stanisław Sakowicz Inland Fisheries Institute, Oczapowskiego 10, 10-719 Olsztyn, Poland
| | - L Toomey
- University of Lorraine, INRAE, UR AFPA, Faculty of Science and Technology, Boulevard des Aiguillettes, F-54506 Vandoeuvre-Lés-Nancy, France
| | - P Fontaine
- University of Lorraine, INRAE, UR AFPA, Faculty of Science and Technology, Boulevard des Aiguillettes, F-54506 Vandoeuvre-Lés-Nancy, France
| | - S Milla
- University of Lorraine, INRAE, UR AFPA, Faculty of Science and Technology, Boulevard des Aiguillettes, F-54506 Vandoeuvre-Lés-Nancy, France
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Andrés MA, Fontaine P, Goldmann M, Serre C, Roubeau O, Gascón I. Solvent-exchange process in MOF ultrathin films and its effect on CO 2 and methanol adsorption. J Colloid Interface Sci 2021; 590:72-81. [PMID: 33524722 DOI: 10.1016/j.jcis.2021.01.030] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 01/08/2021] [Accepted: 01/09/2021] [Indexed: 11/19/2022]
Abstract
Metal-organic framework (MOF) activation is crucial for the use of MOFs in several applications and solvent-exchange process is a necessary step in many activation methods. In this contribution, we have explored in situ MOF monolayer film formation at the air-water interface. Nanoparticles (NPs) of the Al trimesate MIL-96(Al) retain chloroform into their micropores, which considerably diminishes the CO2 adsorption capacity of MOF films. However, a solvent-exchange process between chloroform and water increases CO2 film adsorption capacity by 30%. Total Reflection X-Ray Fluorescence (TRXF) allows studying the kinetics of this process at the air-water interface, that strongly depends on the NP size. The conclusions derived from in situ studies allow optimizing the ex situ activation procedure of MIL-96(Al) films deposited onto quartz crystal microbalance (QCM) substrates in order to maximize CO2 and methanol adsorption.
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Affiliation(s)
- M A Andrés
- Departamento de Química Física, Facultad de Ciencias, Universidad de Zaragoza, 50009 Zaragoza, Spain; Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC and Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - P Fontaine
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette, France
| | - M Goldmann
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48, 91192 Gif-sur-Yvette, France; Institut des NanoSciences de Paris, UMR 7588 CNRS, Sorbonne Université, 4 place Jussieu, 75252 Paris Cedex 05, France
| | - C Serre
- Institut des Matériaux Poreux de Paris, FRE 2000 CNRS Ecole Normale Supérieure de Paris, Ecole Supérieure de Physique et de Chimie Industrielles de Paris, PSL Research University, 75005 Paris, France
| | - O Roubeau
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC and Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - I Gascón
- Departamento de Química Física, Facultad de Ciencias, Universidad de Zaragoza, 50009 Zaragoza, Spain; Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC and Universidad de Zaragoza, 50009 Zaragoza, Spain.
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Mondain V, Retur N, Fontaine P, Carenco P, Risso K, Bertrand B, Lieutier-Colas F. Et si transparence et écotoxicité devenaient des nouveaux critères de prescription et d’achat des antibiotiques ? Med Mal Infect 2020. [DOI: 10.1016/j.medmal.2020.06.101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Colchen T, Gisbert E, Ledoré Y, Teletchea F, Fontaine P, Pasquet A. Is a cannibal different from its conspecifics? A behavioural, morphological, muscular and retinal structure study with pikeperch juveniles under farming conditions. Appl Anim Behav Sci 2020. [DOI: 10.1016/j.applanim.2020.104947] [Citation(s) in RCA: 4] [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: 11/28/2022]
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Aguadé AS, Gastaldi-Ménager C, Karsenty D, Fontaine P, Fagot-Campagna A. Type2 diabetes:changing patterns of use of antidiabetic drugs 8 years after starting treatment(snds). Eur J Public Health 2019. [DOI: 10.1093/eurpub/ckz186.202] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Objective
To describe the changing patterns in the use of the various classes of antidiabetic drugs in a cohort of patients newly treated for diabetes from 2008 to 2015 on the basis of comprehensive health insurance data.
Methods
General scheme beneficiaries 45 years and older were identified in the French National Health Data System (SNDS) as newly treated when antidiabetic drugs were dispensed on at least 3 different dates in 2008 and at least once during the last 4 months of 2008, but were dispensed less than 3 times in 2006-2007. Treatment regimens for the last 4 months of each year were defined for this cohort.
Results
158,000 people (53% men, mean age 62 years) initiated antidiabetic drug therapy in 2008: monotherapy (without insulin): 74%, dual therapy: 17%, treatment with 3 or more drugs: 3%, and insulin therapy: 7%. The proportion of patients taking monotherapy decreased by 13 percentage points during the second year and only 32% of the cohort was treated by monotherapy 8 years after starting treatment. The proportions of patients taking dual therapy increased by 4 percentage points (21% in 2015), triple therapy increased by 8 percentage points (11%), a combination of insulin+other antidiabetics increased by 4 percentage points (7%) and insulin alone remained stable (4%). At the last quarter of 2015, 12% of patients did not receive any antidiabetic drugs and 13% had died. The creation of a cohort of diabetic patients newly treated in 2013 demonstrated changing prescribing practices: a lower proportion of monotherapy in the first year of treatment, but a growing use of metformin.
Conclusions
Treatment was intensified during the first 8 years for one half of the cohort. The maximal dosage of Metformin is not used before introducing a second antidiabetic in 1 case in 2. Insufficient use of Metformin, in general and in terms of dosage, was observed, although this use is improving.
Key messages
Initiation of antidiabetic drug therapy in people 45 years and older consisted of monotherapy in 3/4 of cases in 2008. Insufficient use of Metformin, in general and in terms of dosage, was observed, although this use is improving.
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Ciatto G, Aubert N, Lecroard M, Engblom C, Fontaine P, Dubuisson JM, Abiven YM, Janolin PE, Kiat JM, Dumont Y, Berini B, Fouchet A, Keller N. FORTE - a multipurpose high-vacuum diffractometer for tender X-ray diffraction and spectroscopy at the SIRIUS beamline of Synchrotron SOLEIL. J Synchrotron Radiat 2019; 26:1374-1387. [PMID: 31274467 DOI: 10.1107/s1600577519003722] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 03/18/2019] [Indexed: 06/09/2023]
Abstract
A new high-vacuum multipurpose diffractometer (called FORTE from the French acronyms of the project) has recently been installed at the tender/hard X-ray SIRIUS beamline of Synchrotron SOLEIL, France. The geometry chosen allows one to work either in the classical Eulerian four-circle geometry for bulk X-ray diffraction (XRD) or in the z-axis geometry for surface XRD. The diffractometer nicely fits the characteristics of the SIRIUS beamline, optimized to work in the 1.1-4.5 keV range, and allows one to perform unprecedented diffraction anomalous fine structure (DAFS) experiments in the tender X-ray region, also around non-specular reflections, covering a large reciprocal-space volume. Installation of an X-ray fluorescence detector on a dedicated flange allows simultaneous DAFS and X-ray absorption (XAS) measurements. The access to the tender X-ray region paves the way to resonant investigations around the L-edges of second-row transition elements which are constituents of functional oxide materials. It also enables access to several edges of interest for semiconductors. Finally, the control architecture based on synchronized Delta Tau units opens up exciting perspectives for improvement of the mechanical sphere of confusion.
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Affiliation(s)
- G Ciatto
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48 F-91192 Gif sur Yvette CEDEX, France
| | - N Aubert
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48 F-91192 Gif sur Yvette CEDEX, France
| | - M Lecroard
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48 F-91192 Gif sur Yvette CEDEX, France
| | - C Engblom
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48 F-91192 Gif sur Yvette CEDEX, France
| | - P Fontaine
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48 F-91192 Gif sur Yvette CEDEX, France
| | - J M Dubuisson
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48 F-91192 Gif sur Yvette CEDEX, France
| | - Y M Abiven
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint-Aubin, BP 48 F-91192 Gif sur Yvette CEDEX, France
| | - P E Janolin
- Laboratoire SPMS, UMR CNRS-CentraleSupélec, Bâtiment Gustave Eiffel - MB.105, 8-10 rue Joliot-Curie, 91190 Gif-Sur-Yvette CEDEX, France
| | - J M Kiat
- Laboratoire SPMS, UMR CNRS-CentraleSupélec, Bâtiment Gustave Eiffel - MB.105, 8-10 rue Joliot-Curie, 91190 Gif-Sur-Yvette CEDEX, France
| | - Y Dumont
- Groupe d'Etudes de la Matière Condensée (GEMaC), Université Versailles Saint-Quentin en Yvelines - CNRS, Université Paris-Saclay, Versailles, France
| | - B Berini
- Groupe d'Etudes de la Matière Condensée (GEMaC), Université Versailles Saint-Quentin en Yvelines - CNRS, Université Paris-Saclay, Versailles, France
| | - A Fouchet
- Groupe d'Etudes de la Matière Condensée (GEMaC), Université Versailles Saint-Quentin en Yvelines - CNRS, Université Paris-Saclay, Versailles, France
| | - N Keller
- Groupe d'Etudes de la Matière Condensée (GEMaC), Université Versailles Saint-Quentin en Yvelines - CNRS, Université Paris-Saclay, Versailles, France
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Fontaine P, Acosta O, Riet F, Castelli J, Gnep K, Simon A, Depeursinge A, De Crevoisier R. PO-0965 How to find the best radiomics features for prediction of overall survival in SBRT for HCC? Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)31385-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Roussel R, Fontaine P, Gouet D, Serusclat P, Martinez L, Detournay B, Martin-Kristensen M. Le traitement du diabète de type 2 en France est dynamique plutôt qu’inerte : analyse des prescriptions de 847 122 patients. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/s1957-2557(18)30096-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Kékicheff P, Iss J, Fontaine P, Johner A. Direct Measurement of Lateral Correlations under Controlled Nanoconfinement. Phys Rev Lett 2018; 120:118001. [PMID: 29601753 DOI: 10.1103/physrevlett.120.118001] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Indexed: 06/08/2023]
Abstract
Lateral correlations along hydrophobic surfaces whose separation can be varied continuously are measured by x-ray scattering using a modified surface force apparatus coupled with synchrotron radiation, named SFAX. A weak isotropic diffuse scattering along the equatorial plane is revealed for mica surfaces rendered hydrophobic and charge neutral by immersion in cationic surfactant solutions at low concentrations. The peak corresponds to a lateral surface correlation length ξ≈12 nm, without long-range order. These findings are compatible with the atomic force microscopy imaging of a single surface, where adsorbed surfactant stripes appear surrounded by bare mica zones. Remarkably, the scattering patterns remain stable for gap widths D larger than the lateral period but change in intensity and shape (to a lesser extent) as soon as D<ξ. This evolution codes for a redistribution of counterions (counterion release from antagonistic patches) and the associated new x-ray labeling of the patterns. The redistribution of counterions is also the key mechanism to the long-range electrostatic attraction between similar, overall charge-neutral walls, reported earlier.
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Affiliation(s)
- P Kékicheff
- Institut Charles Sadron, Université de Strasbourg, CNRS UPR22, 23 rue du Loess 67034 Strasbourg cedex 2, France
- Synchrotron SOLEIL, Saint Aubin, 91192 Gif-sur-Yvette, France
| | - J Iss
- Institut Charles Sadron, Université de Strasbourg, CNRS UPR22, 23 rue du Loess 67034 Strasbourg cedex 2, France
| | - P Fontaine
- Synchrotron SOLEIL, Saint Aubin, 91192 Gif-sur-Yvette, France
| | - A Johner
- Institut Charles Sadron, Université de Strasbourg, CNRS UPR22, 23 rue du Loess 67034 Strasbourg cedex 2, France
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12
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Ben Ammar I, Milla S, Missaoui H, Ledoré Y, Teletchea F, Fontaine P. Does constant photoperiod inhibit the onset of the reproductive cycle in northern pike (Esox lucius) males? Fish Physiol Biochem 2018; 44:301-310. [PMID: 29103172 DOI: 10.1007/s10695-017-0435-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Accepted: 10/23/2017] [Indexed: 06/07/2023]
Abstract
For most temperate and arctic fish species, photoperiod is the key abiotic factor determining the onset of the reproductive cycle, and, for many species, constant long photoperiod seems to have an inhibitory effect. Yet, there is no knowledge about the effect of photoperiod on the onset of the reproductive cycle in northern pike males. The aim of this work was to investigate the potential inhibitory effect of constant long photoperiod on pike males. Batches of fish were reared in triplicate under natural simulated photoperiod (NSP) or constant long photoperiod (CP; 16L:8D) from 14 October 2013 to 14 March 2014. Fish were sampled three times (at the beginning of the photoperiod decrease, at the beginning of the temperature decrease and at the end of the temperature decrease). Morphological parameters, sexual steroid levels and spermatogenetic stages were investigated. Our results showed that CP partially inhibited gonadal development (gonado-somatic index or GSI, %; 2.5% under NSP and 1.2% under CP at day 152), spermatic development (96.2% of spermatozoa under NSP and 69.3% under CP at day 152) and the plasmatic levels of testosterone (7.20 ng/mL under NSP and 2.37 ng/mL under CP at day 152). In conclusion, photoperiod may be one of the determinant factors that control the onset of the reproductive cycle in pike males, but temperature and endogenous rhythms also need to be investigated.
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Affiliation(s)
- I Ben Ammar
- Unité de Recherche Animal et Fonctionnalités des Produits Animaux, USC INRA 340, Université de Lorraine, F-54505, Vandoeuvre-lès-Nancy, France
- Laboratoire des Sciences halieutiques, Institut National d'Agronomie de Tunis, Cité Mahrajène, Tunis, Tunisia
| | - S Milla
- Unité de Recherche Animal et Fonctionnalités des Produits Animaux, USC INRA 340, Université de Lorraine, F-54505, Vandoeuvre-lès-Nancy, France
| | - H Missaoui
- Laboratoire des Sciences halieutiques, Institut National d'Agronomie de Tunis, Cité Mahrajène, Tunis, Tunisia
| | - Y Ledoré
- Unité de Recherche Animal et Fonctionnalités des Produits Animaux, USC INRA 340, Université de Lorraine, F-54505, Vandoeuvre-lès-Nancy, France
| | - F Teletchea
- Unité de Recherche Animal et Fonctionnalités des Produits Animaux, USC INRA 340, Université de Lorraine, F-54505, Vandoeuvre-lès-Nancy, France
| | - P Fontaine
- Unité de Recherche Animal et Fonctionnalités des Produits Animaux, USC INRA 340, Université de Lorraine, F-54505, Vandoeuvre-lès-Nancy, France.
- Equipe Domestication en Aquaculture Continentale, UR AFPA-INRA, Faculté des Sciences, Université de Lorraine, Entrée 1B, 5ème étage, Boulevard des Aiguillettes, BP 236, F-54506, Vandœuvre-lès-Nancy, France.
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13
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Alix M, Zarski D, Chardard D, Fontaine P, Schaerlinger B. Deformities in newly hatched embryos of Eurasian perch populations originating from two different rearing systems. J Zool (1987) 2017. [DOI: 10.1111/jzo.12447] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- M. Alix
- UR AFPA; Université de Lorraine - INRA; Vandœuvre-lès-Nancy France
| | - D. Zarski
- UR AFPA; Université de Lorraine - INRA; Vandœuvre-lès-Nancy France
- Department of Lake and River Fisheries; University of Warmia and Mazury; Olsztyn Poland
| | - D. Chardard
- UR AFPA; Université de Lorraine - INRA; Vandœuvre-lès-Nancy France
| | - P. Fontaine
- UR AFPA; Université de Lorraine - INRA; Vandœuvre-lès-Nancy France
| | - B. Schaerlinger
- UR AFPA; Université de Lorraine - INRA; Vandœuvre-lès-Nancy France
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14
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Michel JP, Wang YX, Dé E, Fontaine P, Goldmann M, Rosilio V. Charge and aggregation pattern govern the interaction of plasticins with LPS monolayers mimicking the external leaflet of the outer membrane of Gram-negative bacteria. Biochim Biophys Acta 2015; 1848:2967-79. [PMID: 26343162 DOI: 10.1016/j.bbamem.2015.09.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Revised: 09/01/2015] [Accepted: 09/02/2015] [Indexed: 11/15/2022]
Abstract
Bacterial resistance to antibiotics has become today a major public health issue. In the development of new anti-infectious therapies, antimicrobial peptides appear as promising candidates. However, their mechanisms of action against bacterial membranes are still poorly understood. We describe for the first time the interaction and penetration of plasticins into lipid monolayers and bilayers modeling the two leaflets of the asymmetrical outer membrane of Gram-negative bacteria. The lipid composition of these monolayers mimics that of each leaflet: mixtures of LPS Re 595 mutant and wild type S-form from Salmonella enterica for the external leaflet, and SOPE/SOPG/cardiolipin (80/15/5) for the inner one. The analysis of the interfacial behavior of native (PTCDA1) and modified (PTCDA1-KF) antimicrobial plasticins showed that PTCDA1-KF exhibited better surface properties than its unmodified counterpart. Both peptides could penetrate into the model monolayers at concentrations higher than 0.1 μM. The penetration was particularly enhanced for PTCDA1-KF into the mixed LPS monolayer, due to attractive electrostatic interactions. Grazing X-ray diffraction and atomic force microscopy studies revealed the changes in LPS monolayers organization upon peptide insertion. The interaction of plasticins with liposomes was also monitored by light scattering and circular dichroism techniques. Only the cationic plasticin achieved full disaggregation and structuration in α helices, whereas the native one remained aggregated and unstructured. The main steps of the penetration mechanism of the two plasticins into lipid models of the external leaflet of the outer membrane of Gram-negative bacteria have been established.
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Affiliation(s)
- J P Michel
- Univ Paris-Sud, Institut Galien Paris Sud, 5 rue Jean-Baptiste Clément, F-92296 Châtenay-Malabry cedex, France; CNRS, UMR 8612, F-92296 Châtenay-Malabry, France.
| | - Y X Wang
- Univ Paris-Sud, Institut Galien Paris Sud, 5 rue Jean-Baptiste Clément, F-92296 Châtenay-Malabry cedex, France; CNRS, UMR 8612, F-92296 Châtenay-Malabry, France
| | - E Dé
- Normandie Univ, France; CNRS, UMR 6270, F-76821 Mont-Saint-Aignan Cedex, France
| | - P Fontaine
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint Aubin, BP48, F-91192 Gif-sur-Yvette Cedex, France
| | - M Goldmann
- Synchrotron SOLEIL, L'Orme des Merisiers, Saint Aubin, BP48, F-91192 Gif-sur-Yvette Cedex, France; INSP, UPMC, 5 place Jussieu, F-75005 Paris, France; CNRS, UMR 7588, F-75005 Paris, France
| | - V Rosilio
- Univ Paris-Sud, Institut Galien Paris Sud, 5 rue Jean-Baptiste Clément, F-92296 Châtenay-Malabry cedex, France; CNRS, UMR 8612, F-92296 Châtenay-Malabry, France
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15
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Ben Ammar I, Teletchea F, Milla S, Ndiaye WN, Ledoré Y, Missaoui H, Fontaine P. Continuous lighting inhibits the onset of reproductive cycle in pikeperch males and females. Fish Physiol Biochem 2015; 41:345-356. [PMID: 25233876 DOI: 10.1007/s10695-014-9987-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Accepted: 09/07/2014] [Indexed: 06/03/2023]
Abstract
The effect of a constant photoperiod on the inhibition of male and female reproductive cycles was studied in pikeperch Sander lucioperca. Over a 153-day period, batches of pikeperch (2 years, 950 g) breeders were kept under either under natural or artificial photoperiod conditions (24L:0D) (30-35 fish/tank, triplicate) and sampled in late June (start of the photoperiod decrease in natural conditions), late August (start of temperature decrease) and late November (exogenous vitellogenesis) (7-10 fish/tank/sampling date). Morphological parameters, sexual steroids, alkaline-labile phosphate (µg/mL) levels and gamete developmental stages were investigated. Gonado-somatic index (%), developmental stages and sexual steroid levels (17β-estradiol, testosterone and 11-ketotestosterone, ng/mL) in both sexes and oocyte diameter (µm) and plasma alkaline-labile phosphate (µg/mL) in females were lower in response to a continuous lighting (24L:0D). In both sexes, continuous lighting applied in June for 153 days totally inhibited or delayed the onset of the reproductive cycle. In conclusion, photoperiod manipulation can be used to delay the pikeperch reproductive cycle, even if temperature decreases. This is the first report of the inhibitory effect of photoperiod on the onset of the reproductive cycle in pikeperch.
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Affiliation(s)
- I Ben Ammar
- Unité de Recherche Animal et Fonctionnalités des Produits Animaux, USC INRA 340, Université de Lorraine, 54505, Vandœuvre-lès-Nancy, France,
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16
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Perimenis P, Bouckenooghe T, Delplanque J, Moitrot E, Eury E, Lobbens S, Gosset P, Devisme L, Duvillie B, Abderrahmani A, Storme L, Fontaine P, Froguel P, Vambergue A. Placental antiangiogenic prolactin fragments are increased in human and rat maternal diabetes. Biochim Biophys Acta Mol Basis Dis 2014; 1842:1783-93. [DOI: 10.1016/j.bbadis.2014.06.026] [Citation(s) in RCA: 9] [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] [Received: 02/22/2014] [Revised: 06/20/2014] [Accepted: 06/23/2014] [Indexed: 12/17/2022]
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17
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Vantyghem MC, Defrance F, Quintin D, Leroy C, Raverdi V, Prévost G, Caiazzo R, Kerr-Conte J, Glowacki F, Hazzan M, Noel C, Pattou F, Diamenord ASB, Bresson R, Bourdelle-Hego MF, Cazaubiel M, Cordonnier M, Delefosse D, Dorey F, Fayard A, Fermon C, Fontaine P, Gillot C, Haye S, Le Guillou AC, Karrouz W, Lemaire C, Lepeut M, Leroy R, Mycinski B, Parent E, Siame C, Sterkers A, Torres F, Verier-Mine O, Verlet E, Desailloud R, Dürrbach A, Godin M, Lalau JD, Lukas-Croisier C, Thervet E, Toupance O, Reznik Y, Westeel PF. Treating diabetes with islet transplantation: lessons from the past decade in Lille. Diabetes Metab 2014; 40:108-19. [PMID: 24507950 DOI: 10.1016/j.diabet.2013.10.003] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Revised: 09/29/2013] [Accepted: 10/07/2013] [Indexed: 01/10/2023]
Abstract
Type 1 diabetes (T1D) is due to the loss of both beta-cell insulin secretion and glucose sensing, leading to glucose variability and a lack of predictability, a daily issue for patients. Guidelines for the treatment of T1D have become stricter as results from the Diabetes Control and Complications Trial (DCCT) demonstrated the close relationship between microangiopathy and HbA1c levels. In this regard, glucometers, ambulatory continuous glucose monitoring, and subcutaneous and intraperitoneal pumps have been major developments in the management of glucose imbalance. Besides this technological approach, islet transplantation (IT) has emerged as an acceptable safe procedure with results that continue to improve. Research in the last decade of the 20th century focused on the feasibility of islet isolation and transplantation and, since 2000, the success and reproducibility of the Edmonton protocol have been proven, and the mid-term (5-year) benefit-risk ratio evaluated. Currently, a 5-year 50% rate of insulin independence can be expected, with stabilization of microangiopathy and macroangiopathy, but the possible side-effects of immunosuppressants, limited availability of islets and still limited duration of insulin independence restrict the procedure to cases of brittle diabetes in patients who are not overweight or have no associated insulin resistance. However, various prognostic factors have been identified that may extend islet graft survival and reduce the number of islet injections required; these include graft quality, autoimmunity, immunosuppressant regimen and non-specific inflammatory reactions. Finally, alternative injection sites and unlimited sources of islets are likely to make IT a routine procedure in the future.
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Affiliation(s)
- M-C Vantyghem
- Endocrinology and Metabolism Department, Inserm U599, Lille University Hospital, C.-Huriez Hospital, 1, rue Polonovski, 59037 Lille cedex, France; Diabetes Biotherapy, Inserm U859, Lille University Hospital, Lille, France.
| | - F Defrance
- Endocrinology and Metabolism Department, Inserm U599, Lille University Hospital, C.-Huriez Hospital, 1, rue Polonovski, 59037 Lille cedex, France
| | - D Quintin
- Endocrinology and Metabolism Department, Inserm U599, Lille University Hospital, C.-Huriez Hospital, 1, rue Polonovski, 59037 Lille cedex, France
| | - C Leroy
- Endocrinology and Metabolism Department, Inserm U599, Lille University Hospital, C.-Huriez Hospital, 1, rue Polonovski, 59037 Lille cedex, France
| | - V Raverdi
- Endocrine Surgery Department, Lille University Hospital, Lille, France
| | - G Prévost
- Endocrinology Department, Rouen University Hospital, Rouen, France
| | - R Caiazzo
- Endocrine Surgery Department, Lille University Hospital, Lille, France
| | - J Kerr-Conte
- Diabetes Biotherapy, Inserm U859, Lille University Hospital, Lille, France
| | - F Glowacki
- Nephrology Department, Lille University Hospital, Lille, France
| | - M Hazzan
- Nephrology Department, Lille University Hospital, Lille, France
| | - C Noel
- Nephrology Department, Lille University Hospital, Lille, France
| | - F Pattou
- Diabetes Biotherapy, Inserm U859, Lille University Hospital, Lille, France; Endocrine Surgery Department, Lille University Hospital, Lille, France
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18
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Charpentier G, Balkau B, Benhamou P, Cauchi S, Cosson E, Fontaine P, Froguel P, Gourdy P, Guerci B, Hebel P, Mistretta F, Jeandidier N, Penfornis A, Raccah D, Reznik Y, Scheen A, Canipel L. Premiers enseignements de l’étude DESCENDANCE : prévalence des dysglycémies méconnues chez des apparentés de diabétiques de type 2 sur deux générations. Rev Epidemiol Sante Publique 2014. [DOI: 10.1016/j.respe.2013.11.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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19
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Alix M, Schaerlinger B, Ledoré Y, Chardard D, Fontaine P. Developmental staging and deformities characterization of the Eurasian perch, Perca fluviatilis. Commun Agric Appl Biol Sci 2013; 78:12-14. [PMID: 25141606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
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20
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Castets MD, Schaerlinger B, Silvestre F, Gardeur JN, Dieu M, Corbier C, Kestemont P, Fontaine P. Combined analysis of Perca fluviatilis reproductive performance and oocyte proteomic profile. Theriogenology 2012; 78:432-42, 442.e1-13. [DOI: 10.1016/j.theriogenology.2012.02.023] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2011] [Revised: 02/17/2012] [Accepted: 02/19/2012] [Indexed: 12/16/2022]
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21
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Teletchea F, Fontaine P. Comparison of early life-stage strategies in temperate freshwater fish species: trade-offs are directed towards first feeding of larvae in spring and early summer. J Fish Biol 2010; 77:257-78. [PMID: 20646151 DOI: 10.1111/j.1095-8649.2010.02689.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Based on the analysis of 12 egg and larval variables and temperature of 65 temperate freshwater fish species, the possible relationships between oocyte diameter, larval size at hatch, time and temperature were reassessed and the main early life-stage strategies were described and compared. Time and degree-days required to reach hatching and mixed feeding were weakly related to oocyte diameter and strongly to temperature. These results are chiefly because oocyte diameter and yolk reserves are weakly related and temperature strongly increases tissue differentiation rate, activity of hatching glands and embryo motility. Strong positive relationships were found between larval size and oocyte diameter and degree-days for incubation. No relationship was found between larval size and degree-days from hatching to mixed feeding and between degree-days for incubation and degree-days from hatching to mixed feeding. These last two results are chiefly because the developmental stages at hatching and at the onset of exogenous feeding are not fixed in ontogeny and are not directly related to either larval size or degree-days for incubation, but more probably are species specific. Whatever the spawning season, which can occur almost all year long, the different trade-offs at the early life-stages ensure that most larvae are first feeding during spring, when food size and abundance are the most appropriate.
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Affiliation(s)
- F Teletchea
- URAFPA, Nancy-Université INRA, 54000 Nancy, France.
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22
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Caiazzo R, Arnalsteen L, Pigeyre M, Dezfoulian G, Verkindt H, Kirkby-Bott J, Mathurin P, Fontaine P, Romon M, Pattou F. Long-term metabolic outcome and quality of life after laparoscopic adjustable gastric banding in obese patients with type 2 diabetes mellitus or impaired fasting glucose. Br J Surg 2010; 97:884-91. [PMID: 20473998 DOI: 10.1002/bjs.6993] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
BACKGROUND The long-term outcome of type 2 diabetes mellitus after laparoscopic adjustable gastric banding (LAGB) is unknown. METHODS A longitudinal cohort study was undertaken of patients with grade 3 obesity and type 2 diabetes or impaired fasting glucose (IFG) undergoing LAGB. Metabolic outcomes and quality of life (QoL) were assessed before and 5 years after LAGB. RESULTS At 5 years, data for 22 out of 23 patients with type 2 diabetes and 51 out of 53 with IFG were available. Mean(s.d.) excess weight loss was 41(25) and 41(27) per cent in patients with type 2 diabetes and IFG respectively, and was associated with a significant decrease in haemoglobin (Hb) A1c, fasting and postprandial blood glucose, insulin and triglyceride levels, and in liver steatosis. There were significant increases in insulin sensitivity, beta-cell function, disposition index, high-density lipoprotein-cholesterol and QoL (Nottingham Health Profile). Good metabolic control (HbA1c 7 per cent or less) was obtained in 13 diabetic patients, but complete diabetes remission was maintained in only four. Longer duration of diabetes, and poor preoperative glucose control and beta-cell function at baseline were associated with a less favourable outcome. CONCLUSION LAGB improved metabolic outcomes and QoL in patients with grade 3 obesity with IFG or type 2 diabetes but rarely led to prolonged remission in long-standing diabetes.
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Affiliation(s)
- R Caiazzo
- U859 Biotherapies for Diabetes, Institut National de la Santé et de la Recherche Médicale/Université Lille-Nord de France
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23
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Marre M, Pinget M, Gin H, Thivolet C, Hanaire H, Robert JJ, Fontaine P. Insulin detemir improves glycaemic control with less hypoglycaemia and no weight gain: 52-week data from the PREDICTIVE study in a cohort of French patients with type 1 or type 2 diabetes. Diabetes Metab 2010; 35:469-75. [PMID: 19914118 DOI: 10.1016/j.diabet.2009.06.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2008] [Revised: 05/29/2009] [Accepted: 06/24/2009] [Indexed: 10/20/2022]
Abstract
AIM PREDICTIVE (an ongoing multinational observational study) provides an opportunity to explore the impact of insulin detemir use in routine clinical practice. Here, we report on long-term (52-week) data from a French cohort of patients (n=1772), comprising 643 with type 1 diabetes and 1129 with type 2 diabetes. METHODS Patients were prescribed insulin detemir at their physician's discretion and assessed at various visits (baseline, 12 weeks, 26 weeks and 52 weeks). The primary endpoint was the frequency of serious adverse drug reactions, including major hypoglycaemia. Secondary endpoints included minor and nocturnal hypoglycaemia, glycaemic control (HbA(1c), fasting blood glucose and variability of fasting blood glucose) and weight change. RESULTS The incidence of serious adverse drug reactions was low throughout the study, seen in 10 patients with type 1 diabetes (14 events, 1.6%) and seven with type 2 diabetes (seven events, 0.6%). In both type 1 and type 2 diabetes cohorts, the overall minor and nocturnal hypoglycaemic events were reduced from baseline (P<0.001), with no clinically significant changes in weight from baseline to endpoint. After 52 weeks of treatment with insulin detemir, glycaemic control improved, with reductions in: HbA(1c), by -0.6% and -0.8% in type 1 and type 2 diabetes patients, respectively; fasting blood glucose, by -1.4mmol/L and -1.9mmol/L respectively; and FBG variability, by -0.8mmol/L and -0.3mmol/L, respectively (P<0.0001 for all). CONCLUSION Patients treated with insulin detemir in a clinical healthcare setting improved their glycaemic control with no increases in hypoglycaemia, adverse events or weight compared with baseline.
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Affiliation(s)
- M Marre
- Department of Endocrinology, Diabetology and Nutrition, Bichat Claude Bernard Hospital, Paris cedex 18, France.
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Bringer J, Fontaine P, Detournay B, Nachit-Ouinekh F, Brami G, Eschwege E. Prevalence of diagnosed type 2 diabetes mellitus in the French general population: The INSTANT study. Diabetes & Metabolism 2009; 35:25-31. [DOI: 10.1016/j.diabet.2008.06.004] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2008] [Revised: 06/03/2008] [Accepted: 06/13/2008] [Indexed: 11/15/2022]
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25
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Teletchea F, Gardeur JN, Kamler E, Fontaine P. The relationship of oocyte diameter and incubation temperature to incubation time in temperate freshwater fish species. J Fish Biol 2009; 74:652-668. [PMID: 20735585 DOI: 10.1111/j.1095-8649.2008.02160.x] [Citation(s) in RCA: 17] [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] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Based on the analysis of six egg variables and incubation temperature of 65 temperate freshwater fish species, the possible relationships between oocyte diameter, incubation time and incubation temperature were reassessed and compared to the results obtained from marine fishes. Most freshwater species have eggs (mean +/-s.d. 2.19 +/- 1.52 mm) larger than marine species, that are chiefly demersal and develop stuck to various substrata, such as plants or rocks. A strong negative relationship was found between incubation time (t, days) and incubation temperature (T, degrees C): t = 186.23e(-0.197T) (r(2)= 0.87). A strong dependence of incubation time on oocyte diameter (Ø, mm) and incubation temperature was also found and was defined as: log(10)t= 3.002 + 0.599 log(10)Ø - 1.91 log(10) (T + 2), which explained 92% of the variance of the data set. Five major groups of species were defined based on the principal component analysis (PCA) of four quantitative variables. There were two distinct groups of salmonids, displaying demersal and non-adhesive eggs with a long incubation time at low temperature, the eggs of which required a high number of degree-days. There was a large group of species possessing small, mostly demersal and adhesive eggs developing at high temperature during a short period of time, and requiring a low number of degree-days. Between these two extremes, there was a fourth group displaying intermediate values and a fifth group including three species with large, adhesive and demersal eggs incubating at high temperatures during a short period of time. The burbot Lota lota displayed an unusual combination of variables compared to the remaining species in the data set.
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Affiliation(s)
- F Teletchea
- URAFPA, Nancy Université INRA, Nancy, France.
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26
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Pattou F, Beraud G, Arnalsteen L, Seguy D, Pigny P, Fermont C, Romon M, Fontaine P. O47 La restauration de l’insulinosécrétion après Gastric bypass chez le diabétique de type 2 est indépendante de la perte de poids et corrélée à l’augmentation du GLP1. Diabetes & Metabolism 2008. [DOI: 10.1016/s1262-3636(08)72857-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] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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27
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Vambergue A, Dognin C, Boulogne A, Réjou MC, Biausque S, Fontaine P. Increasing incidence of abnormal glucose tolerance in women with prior abnormal glucose tolerance during pregnancy: DIAGEST 2 study. Diabet Med 2008; 25:58-64. [PMID: 18028442 DOI: 10.1111/j.1464-5491.2007.02306.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [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: 11/27/2022]
Abstract
AIMS Mild blood glucose abnormalities during pregnancy may be linked to later glucose tolerance abnormalities or diabetes mellitus. Our aim was to determine the prevalence of diabetes mellitus (DM), impaired glucose tolerance (IGT) or impaired fasting glucose (IFG) 6.75 years after delivery in women with differential blood glucose status during pregnancy. METHODS We compared long-term outcomes among control women (n = 221), women with abnormal glucose tolerance during pregnancy (AGT; n = 322) and women with gestational diabetes (GDM; n = 466) who participated in DIAGEST 1. Women were recruited from 15 public maternity units in France. Clinical parameters could be determined in 155 control, 220 AGT and 338 GDM subjects. Rates of DM, IGT, IFG and 'Any Abnormality' were compared between the groups (American Diabetes Association criteria). RESULTS Adherence to follow-up was 70.7%. Rates of DM, IGT and IFG were respectively 0.9% DM, 2.1% IGT and 3.6% IFG in the control group; rates in the AGT group were 6.3%, 11.3% and 6.3%. In GDM women, the rates of DM, IGT and IFG were, respectively, 18.0%, 13.4% and 8.5%. Predictors for DM were previous GDM, medical history of hypertension, age at delivery > or = 33 years, family history of diabetes, fasting glucose during pregnancy > or = 5.5 mmol/l and the severity of hyperglycaemia during pregnancy defined by the number of abnormal blood glucose values fasting, 1, 2 and 3 h during the glucose tolerance test at diagnosis of GDM. CONCLUSION This study has identified a high prevalence of glucose tolerance abnormalities after AGT during pregnancy. Compared with GDM women, women with AGT have an intermediate risk of later diabetes.
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Affiliation(s)
- A Vambergue
- Department of Diabetology, Centre Hospitalier Universitaire, Lille, France.
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Clay JC, Deruelle P, Fischer C, Couvreux-Dif D, Vambergue A, Cazaubiel M, Fontaine P, Subtil D. [Fifteen practical questions concerning gestational diabetes]. ACTA ACUST UNITED AC 2007; 35:724-30. [PMID: 17702623 DOI: 10.1016/j.gyobfe.2007.07.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2007] [Accepted: 07/04/2007] [Indexed: 11/16/2022]
Abstract
With a review of the current literature, a clarification on screening and management of gestational diabetes is hereby set out, within the frame of a Clinical Expert Series. According to the ethnic group, the prevalence varies from 1 to 14%. The treatment is based on dietary advice, insulin. The ACHOIS study demonstrates that the treatment of gestational diabetes significantly decreases perinatal complications (4 to 1%). The place of the oral treatment (glyburide) remains to be defined. In most countries, diagnosis rests on oral glucose test tolerance: Sullivan 50 g glucose test (1 hour) and 100 g test of glucose if positive (3 hours); WHO 75 g test (2 hours). The screening can be systematic or only on risk factors (wide variations between studies). Screening of gestational diabetes is required because its management improves pregnancy outcomes. Despite this, there is no consensus on the strategy of screening and diagnosis.
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Affiliation(s)
- J-C Clay
- Service de gynécologie-obstétrique, hôpital Jeanne-de-Flandre, université Lille-II, CHRU de Lille, 2, avenue Oscar-Lambret, 59037 Lille cedex, France.
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Marboeuf P, Gras M, Rosey G, Fontaine P, Mounier-Vehier C. [The metabolic syndrome: marker of cardiovascular risk in hypertensive patients? The importance of definition]. Arch Mal Coeur Vaiss 2007; 100:642-648. [PMID: 17928768] [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: 05/25/2023]
Abstract
INTRODUCTION Metabolic syndrome (MetS) was defined by association of abdominal obesity, hypertension, glucose intolerance and/or dyslipidemia. The objective of this study was to compare the new International Diabetes Federation (IDF) definition and the National Cholesterol Education Program Adult Treatment Panel III (NCEP) definition and their association with cardio-vascular disease in hypertensive patients. POPULATION AND METHOD Two hundred and thirty hypertensive patients were hospitalized successively for cardio-vascular disease exploration and hs-CRP measurement. The stratification of cardio-vascular risk was made according to the French recommendations. The IDF definition and the NCEP definition were compared according frequency of resistant hypertension and cardio-vascular disease extension. RESULTS In our study, high cardio-vascular risk hypertension represented 68.5% of patients. Diabetes was present in 23.5% of them and obesity in 45.5%. Patients with cardio-vascular disease represented 60% of our study population. Prevalence of MetS was 38.5% according to the NCEP definition and 59% according to the IDF definition. The NCEP definition was allowed to select subjects with widespread vascular disease and resistant hypertension whereas the IDF definition did not. These results could be explained by lower waist circumference and glycaemia cuts offs according to the IDF criteria. When diabetic's patients were excluded, MetS was not associated with increase of resistant hypertension frequency. Moreover, hs-CRP was independently associated to the extension of the cardiovascular disease and smoking remained the most powerfully factor associated to the cardio-vascular disease extension. CONCLUSION In hypertensive patients, the NCEP definition seems more adapted to the diagnosis of MetS than the IDF one. Abdominal obesity could be the indispensable element to the MetS diagnosis but according to the NCEP waist circumference cut off. The use of this syndrome seems to be relevant to select the patients presenting an intermediate cardio-vascular risk in order to adapt treatment.
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Affiliation(s)
- P Marboeuf
- Service de médecine vasculaire et HTA, clinique de cardiologie, hôpital cardiologique, CHRU Lille
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Vambergue A, Fajardy I, Dufour P, Valat AS, Vandersippe M, Fontaine P, Danze PM, Rousseaux J. No loss of genomic imprinting of IGF-II and H19 in placentas of diabetic pregnancies with fetal macrosomia. Growth Horm IGF Res 2007; 17:130-136. [PMID: 17306581 DOI: 10.1016/j.ghir.2007.01.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2006] [Indexed: 10/23/2022]
Abstract
OBJECTIVES Fetal macrosomia is a common complication of maternal diabetes mellitus and is associated with substantial morbidity, but the precise cellular and molecular mechanisms that induce fetal macrosomia are not well understood. The imprinted genes IGF-II and H19 are crucial for placental development and fetal growth. The term placentas from diabetic pregnancies express more insulin-like growth factor II (IGF-II) than those from normal pregnancies. Deregulation of their imprinting status is observed in the macrosomia-associated syndrome, the Beckwith-Wiedemann syndrome. The aim of this study was to determine whether loss of imprinting hence biallelic expression was also a hallmark of macrosomia in diabetic pregnancies. DESIGN AND METHODS IGF-II and H19 maternal and paternal expressions were studied in placentas from two groups of type 1 diabetic mothers: one with macrosomic babies and the other with babies of normal weight. Maternal or paternal allele specific expressions were defined by using DNA polymorphic markers of the IGF-II and H19 genes. RFLP analysis was performed on PCR products from genomic DNA of the father, the mother and the child, and on RT-PCR products from placental mRNA. RESULTS RFLP analysis showed that the IGF-II gene remains paternally expressed and the H19 gene remains maternally expressed in all placentas examined, independently of the birth weight status. CONCLUSIONS These results suggest that, in contrast with Beckwith-Wiedemann syndrome-associated macrosomia, loss of imprinting for IGF-II or H19 is not a common feature of diabetic pregnancies associated with macrosomia.
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Affiliation(s)
- A Vambergue
- Department of Endocrinology and Diabetes, Marc Linquette Hospital, CHRU Lille, France.
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Abstract
Alzheimer's disease (AD) and diabetes mellitus (DM) are two of the most common and devastating health problems in the elderly. They share a number of common features amongst which high prevalence after 65 years, important impact of patient's quality of life, substantial health care costs. Reviews on the epidemiological studies on cognitive impairment in patients with DM found evidence of cross-sectional and prospective associations between type 2 DM and moderate cognitive impairment, on memory and executive functions. There is also evidence for an elevated risk of both vascular dementia and AD in patients with type 2 DM, albeit with strong interaction of other factors such as hypertension, dyslipidaemia and ApoE genotype. DM is an independent predictor of post-stroke dementia. DM being an atherogenic risk factor, it may increase the risk of dementia through associations with stroke, causing vascular dementia. In addition, vascular reactivity may be adversely affected by advanced glycosylation end products resulting in more subtle perfusion abnormalities. Cerebrovascular disease may exacerbate AD through direct interactions between the two pathological processes or through cognitive impairment secondary to cerebrovascular disease "unmasking" AD at an earlier stage than it would otherwise become apparent. The increased risk of AD may also be mediated by the exacerbation of B-amyloid neurotoxicity by advanced glycosylation end products identified in the matrix of neurofibrillary tangles and amyloid plaques in AD brains, or associations with insulin functions. Decreased cholinergic transport across the blood-brain barrier observed in diabetic animals may exacerbate cognitive impairment in AD. Many interventions could reduce the cognitive decline associated with DM, yet not enough are taken into account so far.
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Affiliation(s)
- F Pasquier
- Department of Neurology, EA 2691, Memory Clinic, Lille, France.
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Gin H, Vambergue A, Vasseur C, Rigalleau V, Dufour P, Roques A, Romon M, Millet D, Hincker P, Fontaine P. Blood ketone monitoring: a comparison between gestational diabetes and non-diabetic pregnant women. Diabetes & Metabolism 2006; 32:592-7. [PMID: 17296512 DOI: 10.1016/s1262-3636(07)70313-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2006] [Accepted: 06/01/2006] [Indexed: 11/22/2022]
Abstract
AIM To measure ketonemia in a control population of pregnant women and in a population of women with gestational diabetes (GDM). To define a normal ketonemia threshold for the controls and to determine whether or not this value could play a role in the clinical management of women with GDM. METHOD Fifty-six women with a normal OGTT and 49 women with GDM were included and monitored from the 25th to the 37th week of pregnancy. Control subjects agreed to perform glycaemia and ketonemia self-monitoring 3 times a day. In addition, women with GDM were asked to measure their postprandial glycaemia. Glycaemia and ketonemia measurements were performed using Optium meters. Subjects kept a 24-hour food record twice a week. RESULTS The mean ketonemia was lower in the control group than in the GDM group (0.01+/-0.10 vs. 0.04+/-0.009 mmol/l; P<0.001). Ketonemia values measured before the midday meal and prior to the evening meal were lower for control subjects than for GDM patients (P=0.002 and P=0.005). Fasting ketonemia was unrelated to ketonuria in the GDM group, whereas there was a correlation in the control group (P=0.006). At least one chronic increase in ketonemia levels was observed in 47% of the women with GDM, compared with only 12% of controls. The lowest levels of evening glycaemia correlated with the highest levels of ketonemia; women with GDM reported lower food and carbohydrate intakes than controls (P<0.001). CONCLUSION This work has enabled the establishment of ketonemia reference standards in non-diabetic pregnant women. If ketonemia does indeed indicate overly restrictive dietary behavior, this parameter could be employed for monitoring adherence to the nutritional recommendations for GDM.
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Affiliation(s)
- H Gin
- Bordeaux, University Medical Center.
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Yollin E, Kozlowski O, Soudan B, D’herbomez M, Fontaine P, Rousseaux M, Cortet-Rudelli C. CO29 - Prévalence des déficits hypophysaires chez les patients à plus d’un an d’un traumatisme crânien présentant des séquelles neuropsychologiques. Annales d'Endocrinologie 2006. [DOI: 10.1016/s0003-4266(06)72644-0] [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] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Pignat J, Cantin S, Liu RCW, Goldmann M, Fontaine P, Daillant J, Perrot F. pH-dependent kinetics of MgCl2 adsorption under a fatty-acid Langmuir film. Eur Phys J E Soft Matter 2006; 20:387-94. [PMID: 16927026 DOI: 10.1140/epje/i2006-10027-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2006] [Accepted: 07/28/2006] [Indexed: 05/11/2023]
Abstract
The effect of subphase pH (5.5 and 10.5) on the structure of behenic-acid monolayers was investigated during Mg(2+) adsorption by means of Grazing Incidence X-ray Diffraction (GIXD) and Brewster Angle Microscopy (BAM). The final phase corresponding to an ion superlattice commensurate to the behenic-acid cell is pH-independent. In contrast, the sequence of phases evidenced from the initial L(2)-phase to this final state presents at pH 10.5 an additional stage associated to a film condensation toward the L' (2)-phase. The structures of the intermediate states preceding the superstructure nucleation are slightly different, both with a short-range fatty-acid order. Finally, a laser light effect that could result from visible light absorption by the inorganic complexes is evidenced in the final state as well as in the intermediate phases.
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Affiliation(s)
- J Pignat
- LPPI, Université de Cergy-Pontoise, 5 mail Gay-Lussac Neuville/Oise, 95031, Cergy-Pontoise Cedex, France
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Dynarowicz-Łatka P, Rosilio V, Boullanger P, Fontaine P, Goldmann M, Baszkin A. Influence of a neoglycolipid and its PEO-lipid moiety on the organization of phospholipid monolayers. Langmuir 2005; 21:11941-8. [PMID: 16316136 DOI: 10.1021/la051749w] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
The surface properties of the neoglycolipid (GlcNAcE(3)G(28)) and of its PEO-lipid (E(3)G(28)) moiety mixed with phospholipids (dipalmitoylphosphatidylcholine, DPPC; distearoylphosphatidylcholine, DSPC; diarachidoylphosphatidylcholine, DAPC; and dibehenoylphosphatidylcholine, DBPC) were studied in Langmuir monolayers at various mixture compositions and surface pressures. The pi-A isotherms of the pure compounds revealed that because of the presence of the sugar group in its molecule, GlcNAcE(3)G(28) collapsed at a higher surface pressure and occupied a larger molecular area than the PEO-lipid moiety. It was also observed that the presence of the PEO-lipid (E(3)G(28)) in the mixtures triggered a strong alteration of both phospholipid pi-A isotherm profiles and surface diffraction spectra, an indication that the disordering of the initially structured phospholipid monolayers took place. Unlike E(3)G(28), GlcNAcE(3)G(28) did not disorganize phospholipid monolayers but generated a partial segregation of the film-forming components. The calculated excess free energies of mixing (DeltaG(exc)) for GlcNAcE(3)G(28)-phospholipid mixtures enabled us to predict the stability of such systems.
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Affiliation(s)
- P Dynarowicz-Łatka
- Physico-Chimie des Surfaces, UMR CNRS 8612, Université Paris-Sud, Châtenay-Malabry, France
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Prévost G, Phan TM, Mounier-Vehier C, Fontaine P. Control of cardiovascular risk factors in patients with type 2 diabetes and hypertension in a French national study (Phenomen). Diabetes & Metabolism 2005; 31:479-85. [PMID: 16357792 DOI: 10.1016/s1262-3636(07)70219-7] [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] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
UNLABELLED For some years now, the recommendations of scientific societies have significantly reduced the therapeutic targets for blood pressure, glycaemia and lipid levels in diabetic patients. However, little is known regarding the synchronization between effective risk factor management and the guidelines. To examine this issue, the Phenomen survey was conducted between January and July 2001 on 16358 patients suffering from hypertension followed by a general practitioner in France. AIM To evaluate the control of cardiovascular risk factors in patients with diabetes and hypertension according to the French guidelines. METHODS AND PATIENTS 8177 general practitioners, selected from a national database according to quotas, taking into account age, practice and area, had to include the first two hypertensive patients they came across in their practice and to collect their demographic data, cardiovascular risk factors and medications. RESULTS 2346 out of 16358 hypertensive patients presented with type 2 diabetes (14.3% of the cohort). The number of GP consultations in the last 12 months averaged 8.31. According to the French guidelines, 6.5% had a blood pressure<140/80 mmHg, a total of 38.7% patients met the goal of LDL cholesterol level and 26.6% of patients had an HbA1c<6.5%, 53.4% of patients had an HbA1c between 6.6 and 8%. 37.1% of patients continued to receive antihypertensive monotherapy but only 3% in this monotherapy group reached the target of 130/85 mmHg. 29% of the patients were on antiplatelet therapy. 64.6% of these hypertensive diabetic patients presented with more than three other cardiovascular risk factors. Based on WHO recommendations, 0.3% of the patients met all of the blood pressure, lipid and glycaemic treatment objectives. CONCLUSION Despite frequent monitoring by a general practitioner, the overall management of modifiable risk factors in this diabetic hypertensive population is clearly inadequate. The impact of the guidelines on effective management remains limited and additional information is required to understand why physicians are not more aggressive in managing modifiable risk factors in diabetic patients.
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Affiliation(s)
- G Prévost
- Service d'endocrinologie et diabétologie, Clinique Marc Linquette, CHRU Lille, 59037 Lille Cedex, France.
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Delcourt A, Huglo D, Prangere T, Benticha H, Devemy F, Tsirtsikoulou D, Lepeut M, Fontaine P, Steinling M. Comparison between Leukoscan® (Sulesomab) and Gallium-67 for the diagnosis of osteomyelitis in the diabetic foot. Diabetes & Metabolism 2005; 31:125-33. [PMID: 15959418 DOI: 10.1016/s1262-3636(07)70178-7] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
OBJECTIVES The diagnosis of osteomyelitis in patients with diabetic foot is difficult both clinically and radiologically. An early diagnosis is crucial to optimize therapeutic strategy. Among the diagnostic methods currently used, scintigraphy with ex-vivo labelled white blood cells is the gold standard, but cannot be performed in all centers; therefore 67Gallium citrate (67Ga) imaging in combination with a bone scintigraphy is still widely used. METHOD The results of imaging 24 diabetic patients with 31 suspected osteomyelitic lesions using the antigranulocyte Fab' fragment (Sulesomab or LeukoScan or immunoscintigraphy) were prospectively compared with results from the bone scan coupled with 67Ga. The diagnosis of osteomyelitis was confirmed by either biopsy or follow-up, radiological imaging and clinical outcome. RESULTS AND CONCLUSION Sulesomab correctly identified 12 of 18 osteomyelitic lesions while 67Ga was able to detect only 8 of 18. Therefore the sensitivity is 67% for Sulesomab and 44% for 67Ga. Among the 13 non-osteomyelitic lesions imaging with Sulesomab was able to rule out infection in 11 cases and 67Ga in 10 cases. The specificity is therefore 85% for Sulesomab and 77% for 67Ga. Image interpretation for Sulesomab in this group of patients is occasionally suboptimal when imaging is performed at 3 hours post injection. High vascular background in the early images may obscure infection especially in small bones. Practically, scintigraphy with Sulesomab is fast and simple due to ease of labeling, no ex-vivo handling of blood, low radiation and provides rapid diagnosis. The diagnosis of osteomyelitis obtained by the antibody fragment scintigraphy influences the management (guided biopsy) and therapy. In several patients, imaging with Sulesomab was able to rule out osteomyelitis, helping to avoid useless antibiotic therapy and its associated side effects.
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Affiliation(s)
- A Delcourt
- Service de Médecine Nucléaire et Imagerie Fonctionnelle, Hôpital C. Huriez, C.H.R.U. de Lille, Lille, France.
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Prevost G, Fajardy I, Besmond C, Balkau B, Tichet J, Fontaine P, Danze PM, Marre M. Polymorphisms of the Receptor of Advanced Glycation Endproducts (RAGE) and the development of nephropathy in type 1 diabetic patients. Diabetes & Metabolism 2005; 31:35-9. [PMID: 15803111 DOI: 10.1016/s1262-3636(07)70164-7] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
OBJECTIVES We investigated the association of the RAGE (Receptor for Advanced Glycation End products) exon3 gene polymorphisms with stages of nephropathy in type 1 diabetes. METHODS The RAGE exon 3 genotype was assessed by Denaturing Gradient Gel Electrophoresis (DGGE) procedure in 487 type 1 diabetic patients with proliferative retinopathy subdivided into four groups according to their level of renal involvement and in 351 control subjects (GENEDIAB study). RESULTS We reported here three main low frequency dimorphisms, previously submitted to data banks, Gly82Ser, Val89 CTC/CTG, and Arg77Cys. The genotype distribution of these polymorphisms was not statistically different in type 1 diabetic patients compared to healthy controls (p=0.37). Among the three described polymorphisms, only the RAGE Gly82Ser genotype frequency was significantly increased in the group with advanced nephropathy (11%) defined by a chronic renal failure compared to the three others groups: no nephropathy, 5%; incipient (microalbuminuria) 5%; established (macroalbuminuria), 2%) (P=0.04). The 82 Ser allele was identified as an independent risk marker for the stage of advanced nephropathy: adjusted odds ratio 3.17(95% CI 1,32-7,85, p=0.008). CONCLUSION These data suggest that the 82 Ser allele of the RAGE gene is a risk allele for developing advanced nephropathy. This suggests that some RAGE gene polymorphisms may be associated with progression to diabetic advanced nephropathy in Caucasian type 1 diabetic patients.
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Affiliation(s)
- G Prevost
- Department of Endocrinology and Diabetology, Clinique Marc Linquette, CHRU Lille, France.
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Cantin S, Pignat J, Perrot F, Fontaine P, Goldmann M. Observation of a two-step mechanism in the formation of a superstructure of cadmium-behenic acid Langmuir monolayer: evidence of an intermediate structure. Phys Rev E Stat Nonlin Soft Matter Phys 2004; 70:050601. [PMID: 15600579 DOI: 10.1103/physreve.70.050601] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2004] [Indexed: 05/24/2023]
Abstract
By means of grazing incidence x-ray diffraction, the structure of a behenic acid monolayer spread over chloride salt solutions of cadmium is observed to evolve from the tilted L2 phase to the superstructure (corresponding to an organized monolayer of ions in addition to the ordered organic film), through an intermediate phase. The studied salt concentrations are below the so-called "threshold" needed for the formation of this superstructure. This kinetic process involving two first-order phase transitions is confirmed by Brewster angle microscopy experiments and surface pressure-area isotherms measured at different times after monolayer deposition.
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Affiliation(s)
- S Cantin
- LPPI (EA 528), Université de Cergy-Pontoise, Neuville sur Oise, 95 031 Cergy-Pontoise Cedex, France
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Hermansen K, Fontaine P, Kukolja KK, Peterkova V, Leth G, Gall MA. Insulin analogues (insulin detemir and insulin aspart) versus traditional human insulins (NPH insulin and regular human insulin) in basal-bolus therapy for patients with type 1 diabetes. Diabetologia 2004; 47:622-9. [PMID: 15298338 DOI: 10.1007/s00125-004-1365-z] [Citation(s) in RCA: 254] [Impact Index Per Article: 12.7] [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: 11/27/2022]
Abstract
AIMS/HYPOTHESIS The aim of the trial was to compare the efficacy and tolerability of two types of basal-bolus therapy, using either the soluble long-acting basal insulin analogue, insulin detemir, in combination with the rapid-acting analogue, insulin aspart, or NPH insulin in combination with mealtime regular human insulin. METHODS In this 18-week, 1:1 randomised, open-labelled, parallel trial, 595 patients with Type 1 diabetes mellitus received insulin detemir or NPH insulin in the morning and at bedtime in combination with mealtime insulin aspart or regular human insulin respectively. RESULTS Glycaemic control with insulin detemir/insulin aspart was improved in comparison with NPH insulin/regular human insulin (HbA1c: 7.88% vs 8.11%; mean difference: -0.22% point [95% CI: -0.34 to -0.10]; p<0.001). Self-measured 8-point plasma glucose profiles differed between the groups (p<0.001), with lower postprandial plasma glucose levels in the insulin detemir/insulin aspart group. Within-person day-to-day variation in plasma glucose was lower with insulin detemir/insulin aspart than with NPH insulin/regular human insulin (SD: 2.88 vs 3.12 mmol/l; p<0.001). Risk of overall and nocturnal hypoglycaemia (23.00-06.00 hours) was, respectively, 21% (p=0.036) and 55% (p<0.001) lower in the insulin detemir/insulin aspart group than in the NPH insulin/regular human insulin group. Body weight (adjusted for baseline and change in HbA1c) was 1 kg lower with insulin detemir/insulin aspart than with NPH insulin/regular human insulin (p<0.001). CONCLUSIONS/INTERPRETATION Basal-bolus therapy using insulin detemir/insulin aspart offers a better balance of control and tolerability than with NPH insulin/regular human insulin. The low variability and more physiological action profiles generated with these insulin analogues resulted in improved glycaemic control with lower risk of hypoglycaemia and no concomitant body weight increase.
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Affiliation(s)
- K Hermansen
- Department of Endocrinology and Metabolism, Aarhus University Hospital, Aarhus C, Denmark.
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Guerci B, Drouin P, Grangé V, Bougnères P, Fontaine P, Kerlan V, Passa P, Thivolet C, Vialettes B, Charbonnel B. Self-monitoring of blood glucose significantly improves metabolic control in patients with type 2 diabetes mellitus: the Auto-Surveillance Intervention Active (ASIA) study. Diabetes Metab 2004; 29:587-94. [PMID: 14707887 DOI: 10.1016/s1262-3636(07)70073-3] [Citation(s) in RCA: 208] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
OBJECTIVE Self monitoring of blood glucose (SMBG) in type 2 diabetes is a topic of current interest (imbalance between increased health-care costs and improvement in compliance with treatment and diet). An open label randomized prospective study was designed to compare changes in metabolic control over 6 months in patients managed with usual recommendations alone (conventional assessment group) or combined with SMBG. RESEARCH DESIGN AND METHODS Patients not treated with insulin or previously self monitored, 40 to 75 years of age, with a diagnosis of type 2 diabetes > 1 year and standardized HbA(1c) level > =7.5 and< =11% were randomized to either a control group or SMBG group. They were followed up every 6 weeks over 24 weeks. Patients in the SMBG group were given the same device (Ascensia Esprit Discmeter, Bayer) and were required to perform at least 6 capillary assays a week (3 different days of the week, including weekend). Management of patients was standardized, including drugs, diet and physical activity. The primary efficacy criterion was change in HbA(1c) level in Intent To Treat (ITT) patients. Assays were performed at baseline, at 3 and 6 months using the calibrated DCA 2000(R) device (Bayer). RESULTS Two hundred sixty five general practitioners randomized 988 patients (ITT Population), but 689 patients were evaluable for the primary criterion. At the endpoint, HbA(1c) was lower in the SMBG group (8.1 +/- 1.6%) than in the conventional treatment group (8.4 +/- 1.4%, P=0.012). The change in HbA(1c) levels between baseline and endpoint was classified into two classes: improvement if a change > 0.5% occurred, stability or worsening in case of a change< =0.5%; 57.1% of patients in the SMBG group vs 46.8% in the control group had an improvement in HbA(1c) level (P=0.007) after 3 months. A steady state was reached during the last 3 months. A multivariate logistic regression analysis was performed and identified factors predictive of improvement in HbA(1c) levels: HbA(1c) at baseline: odd ratio (OR)=1.749 (P<0.001), SMBG group (reference value: SMBG group): OR=0.665 (P=0.015), duration of diabetes: OR=0.953 (P=0.001) and BMI: OR=0.962 (P=0.039). CONCLUSIONS This study is the first multicenter, controlled, prospective trial conducted on a large number of patients demonstrating that SMBG was statistically associated with a better quality of metabolic control than usual traditional recommendations alone in type 2 diabetes.
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Affiliation(s)
- B Guerci
- Service de Diabétologie, Maladies Métaboliques & Maladies de la Nutrition, Hôpital Jeanne d'Arc, Centre Hospitalo-Universitaire de Nancy, BP 303, Dommartin-lès-Toul, 54201 Toul Cedex, France.
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Belloni L, Delsanti M, Fontaine P, Muller F, Guenoun P, Mays JW, Boesecke P, Alba M. Counterion distribution in urchinlike charged copolymer micelles Monte Carlo simulation and small angle x-ray scattering. J Chem Phys 2003. [DOI: 10.1063/1.1607911] [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: 11/14/2022] Open
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Mounier-Vehier C, Amah G, Duquenoy S, Fontaine P, Phan TM. [Is assessment of kidney involvement in patients with essential hypertension satisfactory? General medical observation results in a national study (PHENOMEN)]. Arch Mal Coeur Vaiss 2003; 96:792-5. [PMID: 12945226] [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: 03/04/2023]
Abstract
UNLABELLED According to ANAES guidelines (2000) adapted from the international guidelines, kidney function should be regularly monitored in hypertensive patients in order to detect vascular nephropathy at an early stage and prevent kidney failure which is a major cardiovascular factor. The PHENOMEN survey was conducted between January and July 2001 on a representative sample of 16,358 patients suffering from hypertension being followed by a General Practitioner (GP). The population included patients from all 22 administrative regions in France. AIMS To determine the prevalence of renal involvement in patients with hypertension (both treated and untreated); to compare the GP's subjective evaluation of the extent of renal involvement with a more objective assessment made according to ANAES guidelines. METHODS Kidney function was evaluated by measuring plasma creatinine levels to derive a value for the creatinine clearance rate (CCR) using the Cockeroft-Gault formula. RESULTS Out of the 16,358 patients included, plasma creatinine levels could be measured in 11,586 (76%) [53% men; 47% women, mean age = 63 +/- 12 years]: mean plasma creatinine = 90 +/- 49 mumol/l, i.e. a mean CCR of 83 +/- 32 ml/min. For 8,650 of the patients (75%), kidney function had been monitored in the preceding twelve months. The physicians defined their patient's kidney function as normal in 10,080 (87%) of cases whereas in reality, 4,411 of 8,650 (51%) were suffering from some degree of renal insufficiency (RI): in 2,422 (28%), RI was mild (> or = 60 CCR < 80 ml/min): in 1,903 (22%) RI was moderate (> or = 30 CCR < 60 ml/min). A minority of patients (44 i.e. 1%) showed severe RI (CCR < 30 ml/min). CONCLUSION Most GPs apply ANAES guidelines and order plasma creatinine assays. However, there is a discrepancy between how the physician "perceives" the seriousness of the renal insufficiency and a more objective measure based on the CCR figure. It would seem that the CCR derivative is insufficiently exploited despite the widespread availability of converters. Thus, the PHENOMEN survey has revealed that the extent of renal involvement in patients with hypertension still tends to be underestimated by GPs despite the major implications of this complication in terms of therapeutic strategy and global cardiovascular risk.
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Affiliation(s)
- C Mounier-Vehier
- Service de médecine interne et HTA, hôpital cardiologique, CHRU, 59037 Lille.
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Fontaine P. [Self-monitoring of blood glucose in gestational diabetes mellitus]. Diabetes Metab 2003; 29:S37-41. [PMID: 12746625] [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: 03/02/2023]
Abstract
About 6% of all pregnancies are complicated by gestational diabetes mellitus in France. Consensus is obtained for defining but not for the screening and diagnosis criteria. Management of gestational diabetes mellitus reduce materno-foetal morbidity. Postprandial blood glucose peaks are highly predictive of macrosomia and have to be controlled in strict rates: less than 1.40 g/liter one hour after meal and less than 1.20 g/liter two hours after meal. Self-monitoring of blood glucose allows to start more rapidly insulintherapy, to obtain a better glycemic control and to reduce macrosomia. The impact of self-monitoring appears to be lower in the management of diet-controlled gestational diabetes. After delivery, self-monitoring of blood glucose can be used to control normalisation of blood glucose of women with high risk of type 2 diabetes mellitus.
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Affiliation(s)
- P Fontaine
- Service d'Endocrinologie et Diabétologie, Clinique Marc-Linquette, 6, rue Pr-Laguesse, 59037 Lille Cedex, France
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Vambergue A, Valat AS, Dufour P, Cazaubiel M, Fontaine P, Puech F. [Maternal and fetal outcome]. J Gynecol Obstet Biol Reprod (Paris) 2002; 31:4S30-4S8. [PMID: 12451356] [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: 02/27/2023]
Abstract
Gestational diabetes, a glucose tolerance disorder of variable severity which occurs or is diagnosed for the first time during pregnancy, constitutes a public health problem because of its frequency (1 to 6% of all pregnancies) and its short-or long term consequences for the foetus and/or the mother. There is as yet still no consensus concerning screening and diagnosis criteria, therapeutic management and the reality of the disease. This population is a high risk population of diabetes mellitus, especially of type 2 diabetes. We could think that the introduction of specific prevention programs in this group could delay or avoid diabetes mellitus and its complications. The mechanisms which could explain gestational diabetes are the same as type 2 diabetes mellitus. We could speculate that these two diseases are identical for alterations in carbohydrate metabolism, but at different stages. It has been reported that the offspring of gestational diabetics mothers are at risk of obesity and glucose intolerance. Therapeutic management of the mother and/or the offspring should be better defined. The screening for gestational diabetes provides an opportunity of identify a large population of women and children at risk of diabetes. It should be possible to avoid diabetes mellitus by specific therapeutic programs in these populations.
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Affiliation(s)
- A Vambergue
- Service d'Endocrinologie et Diabétologie, Clinique Marc-Linquette, CHRU, Lille, France
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Vambergue A, Valat AS, Dufour P, Cazaubiel M, Fontaine P, Puech F. [Pathophysiology of gestational diabetes]. J Gynecol Obstet Biol Reprod (Paris) 2002; 31:4S3-4S10. [PMID: 12451352] [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: 02/27/2023]
Abstract
During pregnancy, a number of maternal metabolic changes occur early and continue throughout pregnancy which help optimize the transfer of nutrients to the fetus. During normal pregnancy, there are a decrease in insulin sensibility which is physiological, progressive and reverse. For glucose tolerance to be maintained in pregnancy it is necessary for maternal insulin secretion to increase sufficiently to counteract the fall in insulin sensitivity. The metabolic characteristic of women with gestational diabetes is insufficient insulin secretion to counteract the pregnancy related fall in insulin sensitivity. There are a lot of factors that could explain the mechanism of insulin secretion and insulin sensitivity during normal pregnancy and gestational diabetes mellitus. Although glucose tolerance normalizes shortly after pregnancy with gestational diabetes in the majority of women, the risk of developing overt diabetes, especially type 2 diabetes is markedly increased. The mechanisms which could explain gestational diabetes are the same as type 2 diabetes mellitus. We could speculate that these two diseases are identical for alterations in carbohydrate metabolism, but at different stages.
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Affiliation(s)
- A Vambergue
- Service d'Endocrinologie et Diabétologie, Clinique Marc-Linquette, CHRU, Lille, France
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Dupres V, Cantin S, Benhabib F, Perrot F, Fontaine P, Goldmann M. Variation of the in-plane structure with depth revealed by grazing incidence x-ray diffraction in a thin Langmuir-Blodgett film. ACTA ACUST UNITED AC 2002; 66:012701. [PMID: 12241399 DOI: 10.1103/physreve.66.012701] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2002] [Indexed: 11/07/2022]
Abstract
Grazing incidence x-ray diffraction is used to characterize the molecular arrangement of ultrathin Langmuir-Blodgett (LB) multilayers. Using two angles of incidence of the beam allowing its penetration either throughout the complete depth of the film or only through the external layers, we show that it is possible to discriminate between the molecular packing of the deeper monolayers and that of the external monolayers of the LB film.
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Affiliation(s)
- V Dupres
- Laboratoire de Physique des Matériaux et des Surfaces, Université de Cergy-Pontoise, Neuville sur Oise, 95 031 Cergy-Pontoise Cedex, France
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Fajardy I, Vambergue A, Stuckens C, Weill J, Danze PM, Fontaine P. CTLA-4 49 A/G dimorphism and type 1 diabetes susceptibility: a French case-control study and segregation analysis. Evidence of a maternal effect. Eur J Immunogenet 2002; 29:251-7. [PMID: 12047362 DOI: 10.1046/j.1365-2370.2002.00309.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Several studies have demonstrated an association of cytotoxic T lymphocyte-associated molecule 4 (CTLA-4) (IDDM 12) alanine 17 with type 1 diabetes, but we wished to study the parental effect of CTLA-4 49 A/G dimorphism in diabetic families. The CTLA-4 exon 1 polymorphism (49 A/G), HLA-DRB1 and insulin gene (INS) variable number tandem repeats (VNTR) were analysed in 134 type 1 diabetic patients vs. 273 control subjects. The segregation analysis for transmission was carried out in 70 informative diabetic families using the transmission distortion test (TDT). All genotyping was performed by PCR-RFLP. CTLA-4 49 G allele frequency was not increased in diabetic patients compared to controls (41 vs. 38%, not significant). The distribution of GG, AG and AA CTLA-4 genotypes was similar in the two groups (13, 57 and 30% vs. 11, 54 and 35%, respectively) and was independent of HLA-DRB1 or INS VNTR polymorphism. The CTLA-4 49 G allele showed weak distorted transmission to the diabetic offspring, whereas random transmission was observed in unaffected offspring. This distortion is attributable to a maternal effect (71% compared to the 50% expected ratio; tdt = 4.8; P < 0.03). The combined transmission of maternal CTLA-4 G with HLA-DRB1*03 (90%; tdt = 6.4; P < 0.01) and VNTR class I (80%; tdt = 5.4; P < 0.02) enhanced the susceptibility effect of each marker separately. We noted a slight CTLA-4 49 G and HLA-DRB1*04 distortion of transmission shared in paternal and maternal diabetic meiosis. In non-diabetic offspring, the CTLA-4 49 A allele confers a protective effect in the presence of maternal HLA-DRB1*03 and paternal HLA-DRB1*04 alleles. Despite the absence of a positive association of the CTLA-4 49 G allele with type 1 diabetes, our segregation analysis supports the hypothesis of a modulation by CTLA-4 49 G/A dimorphism of the susceptibility conferred by maternal HLA-DRB1*03 inheritance. This potential parental effect needs to be confirmed in a larger data set.
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Affiliation(s)
- I Fajardy
- Clinical Predictive Diabetes Center, Marc Linquette Hospital, CHRU Lille, France.
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Vambergue A, Nuttens MC, Goeusse P, Biausque S, Lepeut M, Fontaine P. Pregnancy induced hypertension in women with gestational carbohydrate intolerance: the diagest study. Eur J Obstet Gynecol Reprod Biol 2002; 102:31-5. [PMID: 12039086 DOI: 10.1016/s0301-2115(01)00556-5] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.4] [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: 11/19/2022]
Abstract
OBJECTIVE To determine the relationship between pregnancy induced hypertension (PIH) and gestational glucose intolerance. METHODS A 50g, 1h glucose loading test was offered to all pregnant women between 24 and 28 weeks of gestation in 15 centres in northern France during 8 months in 1992. If the test was positive (> or =7.2 mmol/l), the woman underwent a 3h oral glucose tolerance test (OGTT) as soon as possible. Using the criteria of Carpenter and Coustan, gestational diabetes mellitus (GDM) was defined by two abnormal values (n=218) and gestational mild hyperglycemia (GMH) by one abnormal value (n=130). Each control group was defined by a 50g, 1h loading test result of <7.2 mmol/l (n=108).PIH included gestational hypertension (GH) and preeclampsia (PE). GH was defined as a diastolic pressure of more than 85 mmHg on at least two occasions arising during pregnancy. PE was defined as GH with proteinuria > or =500 mg/24h. RESULTS The rate of PIH in the three groups (GDM; GMH and control group, C) was, respectively 17.0, 10.8, and 4.6%. All the six PE occurred in the GDM group. Univariate analysis showed significantly higher rate of hypertension in women with a history of PE, increasing body mass index before pregnancy (BMI) and glucose intolerance. In multivariate analysis with adjustment for primiparity, independent risk factors for PIH were a history of PE, BMI>27 and GDM, contrary to GMH and maternal age. CONCLUSIONS PIH appears to be linked to the level of glucose intolerance during pregnancy, independently of other known factors of hypertension.
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Affiliation(s)
- A Vambergue
- Department of Endocrinology and Diabetology, Clinique Marc Linquette, CHRU, 6 Rue du Pr Laguesse, 59800 Lille Cedex, France.
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