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Giardina E, Camaño P, Burton-Jones S, Ravenscroft G, Henning F, Magdinier F, van der Stoep N, van der Vliet PJ, Bernard R, Tomaselli PJ, Davis MR, Nishino I, Oflazer P, Race V, Vishnu VY, Williams V, Sobreira CFR, van der Maarel SM, Moore SA, Voermans NC, Lemmers RJLF. Best practice guidelines on genetic diagnostics of facioscapulohumeral muscular dystrophy: Update of the 2012 guidelines. Clin Genet 2024. [PMID: 38685133 DOI: 10.1111/cge.14533] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 03/26/2024] [Accepted: 04/02/2024] [Indexed: 05/02/2024]
Abstract
The gold standard for facioscapulohumeral muscular dystrophy (FSHD) genetic diagnostic procedures was published in 2012. With the increasing complexity of the genetics of FSHD1 and 2, the increase of genetic testing centers, and the start of clinical trials for FSHD, it is crucial to provide an update on our knowledge of the genetic features of the FSHD loci and renew the international consensus on the molecular testing recommendations. To this end, members of the FSHD European Trial Network summarized the evidence presented during the 2022 ENMC meeting on Genetic diagnosis, clinical outcome measures, and biomarkers. The working group additionally invited genetic and clinical experts from the USA, India, Japan, Australia, South-Africa, and Brazil to provide a global perspective. Six virtual meetings were organized to reach consensus on the minimal requirements for genetic confirmation of FSHD1 and FSHD2. Here, we present the clinical and genetic features of FSHD, specific features of FSHD1 and FSHD2, pros and cons of established and new technologies (Southern blot in combination with either linear or pulsed-field gel electrophoresis, molecular combing, optical genome mapping, FSHD2 methylation analysis and FSHD2 genotyping), the possibilities and challenges of prenatal testing, including pre-implantation genetic testing, and the minimal requirements and recommendations for genetic confirmation of FSHD1 and FSHD2. This consensus is expected to contribute to current clinical management and trial-readiness for FSHD.
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Affiliation(s)
- Emiliano Giardina
- Genomic Medicine Laboratory UILDM, IRCCS Fondazione Santa Lucia, Rome, Italy
- Department of Biomedicine & Prevention, Tor Vergata University of Rome, Rome, Italy
| | - Pilar Camaño
- Molecular Diagnostics Platform, Biogipuzkoa Health Research Institute, Hospital Universitario Donostia, San Sebastián, Spain
- CIBERNED, CIBER, Spanish Ministry of Science & Innovation, Carlos III Health Institute, Madrid, Spain
| | | | - Gina Ravenscroft
- Harry Perkins Institute of Medical Research, University of Western Australia, Nedlands, Western Australia, Australia
| | - Franclo Henning
- Division of Neurology, Department of Medicine, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | | | - Nienke van der Stoep
- Department of Clinical Genetics, Leiden University Medical Center, The Netherlands
| | | | - Rafaëlle Bernard
- Aix Marseille Univ, INSERM, Marseille Medical Genetics, Marseille, France
- Centre Hospitalier Universitaire Timone Adultes, Biogénopôle, Service de Génétique Médicale, Marseille, France
| | - Pedro J Tomaselli
- Department of Neurosciences, Division of Neurology, Ribeirao Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Mark R Davis
- Department of Diagnostic Genomics, PathWest Laboratory Medicine, Perth, Western Australia, Australia
| | - Ichizo Nishino
- Department of Neuromuscular Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry (NCNP), Tokyo, Japan
- Department of Genome Medicine Development, Clinical Genome Analysis, Medical Genome Center (MGC), National Center of Neurology and Psychiatry (NCNP), Tokyo, Japan
| | - Piraye Oflazer
- Department of Neurology, Koç University Hospital Muscle Center, Koç University Medical Faculty, Istanbul, Turkey
| | - Valerie Race
- Clinical Laboratory Geneticist, Human Genetics, UZ Leuven, Leuven, Belgium
| | - Venugopalan Y Vishnu
- Department of Neurology, All India Institute of Medical Sciences (AIIMS), Delhi, India
| | | | - Cláudia F R Sobreira
- Department of Neurosciences, Division of Neurology, Ribeirao Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | | | - Steve A Moore
- Senator Paul D. Wellstone Muscular Dystrophy Specialized Research Center, Department of Pathology, Roy J. And Lucille A. Carver College of Medicine, The University of Iowa, Iowa City, Iowa, USA
| | - Nicol C Voermans
- Department of Neurology, Radboud university medical center, Nijmegen, The Netherlands
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Delourme M, Charlene C, Gerard L, Ganne B, Perrin P, Vovan C, Bertaux K, Nguyen K, Bernard R, Magdinier F. Complex 4q35 and 10q26 Rearrangements: A Challenge for Molecular Diagnosis of Patients With Facioscapulohumeral Dystrophy. Neurol Genet 2023; 9:e200076. [PMID: 37200893 PMCID: PMC10188231 DOI: 10.1212/nxg.0000000000200076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 03/23/2023] [Indexed: 05/20/2023]
Abstract
Background and Objectives After clinical evaluation, the molecular diagnosis of type 1 facioscapulohumeral dystrophy (FSHD1) relies in most laboratories on the detection of a shortened D4Z4 array at the 4q35 locus by Southern blotting. In many instances, this molecular diagnosis remains inconclusive and requires additional experiments to determine the number of D4Z4 units or identify somatic mosaicism, 4q-10q translocations, and proximal p13E-11 deletions. These limitations highlight the need for alternative methodologies, illustrated by the recent emergence of novel technologies such as molecular combing (MC), single molecule optical mapping (SMOM), or Oxford Nanopore-based long-read sequencing providing a more comprehensive analysis of 4q and 10q loci. Over the last decade, MC revealed a further increasing complexity in the organization of the 4q and 10q distal regions in patients with FSHD with cis-duplication of D4Z4 arrays in approximately 1%-2% of cases. Methods By using MC, we investigated in our center 2,363 cases for molecular diagnosis of FSHD. We also evaluated whether previously reported cis-duplications might be identified by SMOM using the Bionano EnFocus FSHD 1.0 algorithm. Results In our cohort of 2,363 samples, we identified 147 individuals carrying an atypical organization of the 4q35 or 10q26 loci. Mosaicism is the most frequent category followed by cis-duplications of the D4Z4 array. We report here chromosomal abnormalities of the 4q35 or 10q26 loci in 54 patients clinically described as FSHD, which are not present in the healthy population. In one-third of the 54 patients, these rearrangements are the only genetic defect suggesting that they might be causative of the disease. By analyzing DNA samples from 3 patients carrying a complex rearrangement of the 4q35 region, we further showed that the SMOM direct assembly of the 4q and 10q alleles failed to reveal these abnormalities and lead to negative results for FSHD molecular diagnosis. Discussion This work further highlights the complexity of the 4q and 10q subtelomeric regions and the need of in-depth analyses in a significant number of cases. This work also highlights the complexity of the 4q35 region and interpretation issues with consequences on the molecular diagnosis of patients or genetic counseling.
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Affiliation(s)
- Megane Delourme
- From the Aix Marseille University (M.D., B.G., P.P., K.N., R.B., F.M.), INSERM; Département de Génétique Médicale (C.C., L.G., C.V., K.B., K.N., R.B.), and Centre de Ressources Biologiques (K.B.), AP-HM, Hôpital d'enfants de la Timone, Marseille, France
| | - Chaix Charlene
- From the Aix Marseille University (M.D., B.G., P.P., K.N., R.B., F.M.), INSERM; Département de Génétique Médicale (C.C., L.G., C.V., K.B., K.N., R.B.), and Centre de Ressources Biologiques (K.B.), AP-HM, Hôpital d'enfants de la Timone, Marseille, France
| | - Laurene Gerard
- From the Aix Marseille University (M.D., B.G., P.P., K.N., R.B., F.M.), INSERM; Département de Génétique Médicale (C.C., L.G., C.V., K.B., K.N., R.B.), and Centre de Ressources Biologiques (K.B.), AP-HM, Hôpital d'enfants de la Timone, Marseille, France
| | - Benjamin Ganne
- From the Aix Marseille University (M.D., B.G., P.P., K.N., R.B., F.M.), INSERM; Département de Génétique Médicale (C.C., L.G., C.V., K.B., K.N., R.B.), and Centre de Ressources Biologiques (K.B.), AP-HM, Hôpital d'enfants de la Timone, Marseille, France
| | - Pierre Perrin
- From the Aix Marseille University (M.D., B.G., P.P., K.N., R.B., F.M.), INSERM; Département de Génétique Médicale (C.C., L.G., C.V., K.B., K.N., R.B.), and Centre de Ressources Biologiques (K.B.), AP-HM, Hôpital d'enfants de la Timone, Marseille, France
| | - Catherine Vovan
- From the Aix Marseille University (M.D., B.G., P.P., K.N., R.B., F.M.), INSERM; Département de Génétique Médicale (C.C., L.G., C.V., K.B., K.N., R.B.), and Centre de Ressources Biologiques (K.B.), AP-HM, Hôpital d'enfants de la Timone, Marseille, France
| | - Karine Bertaux
- From the Aix Marseille University (M.D., B.G., P.P., K.N., R.B., F.M.), INSERM; Département de Génétique Médicale (C.C., L.G., C.V., K.B., K.N., R.B.), and Centre de Ressources Biologiques (K.B.), AP-HM, Hôpital d'enfants de la Timone, Marseille, France
| | - Karine Nguyen
- From the Aix Marseille University (M.D., B.G., P.P., K.N., R.B., F.M.), INSERM; Département de Génétique Médicale (C.C., L.G., C.V., K.B., K.N., R.B.), and Centre de Ressources Biologiques (K.B.), AP-HM, Hôpital d'enfants de la Timone, Marseille, France
| | - Rafaëlle Bernard
- From the Aix Marseille University (M.D., B.G., P.P., K.N., R.B., F.M.), INSERM; Département de Génétique Médicale (C.C., L.G., C.V., K.B., K.N., R.B.), and Centre de Ressources Biologiques (K.B.), AP-HM, Hôpital d'enfants de la Timone, Marseille, France
| | - Frederique Magdinier
- From the Aix Marseille University (M.D., B.G., P.P., K.N., R.B., F.M.), INSERM; Département de Génétique Médicale (C.C., L.G., C.V., K.B., K.N., R.B.), and Centre de Ressources Biologiques (K.B.), AP-HM, Hôpital d'enfants de la Timone, Marseille, France
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Magdinier F, Ganne B, Delourme M, Nguyen K, Bernard R. [Facio-scapulo-humeral muscular dystrophy: towards a molecular diagnosis extended to FSHD2]. Med Sci (Paris) 2022; 38 Hors série n° 1:52-54. [PMID: 36649639 DOI: 10.1051/medsci/2022184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Affiliation(s)
- Frédérique Magdinier
- Aix Marseille Univ, INSERM Marseille Medical Genetics, Marseille, France - Département de Génétique Médicale, AP-HM, Hôpital d'enfants de la Timone, Marseille, France - Laboratoire Marseille Medical Genetics, U1251, INSERM ; Aix Marseille University. Faculté des Sciences Médicales et Paramédicales de la Timone. 27, Bd Jean Moulin 13005 Marseille, France
| | - Benjamin Ganne
- Aix Marseille Univ, INSERM Marseille Medical Genetics, Marseille, France
| | - Mégane Delourme
- Aix Marseille Univ, INSERM Marseille Medical Genetics, Marseille, France
| | - Karine Nguyen
- Aix Marseille Univ, INSERM Marseille Medical Genetics, Marseille, France - Département de Génétique Médicale, AP-HM, Hôpital d'enfants de la Timone, Marseille, France
| | - Rafaëlle Bernard
- Aix Marseille Univ, INSERM Marseille Medical Genetics, Marseille, France - Département de Génétique Médicale, AP-HM, Hôpital d'enfants de la Timone, Marseille, France
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Sanson B, Stalens C, Guien C, Villa L, Eng C, Rabarimeriarijaona S, Bernard R, Cintas P, Solé G, Tiffreau V, Echaniz-Laguna A, Magot A, Juntas Morales R, Boyer FC, Nadaj-Pakleza A, Jacquin-Piques A, Béroud C, Sacconi S. Convergence of patient- and physician-reported outcomes in the French National Registry of Facioscapulohumeral Dystrophy. Orphanet J Rare Dis 2022; 17:96. [PMID: 35236385 PMCID: PMC8890461 DOI: 10.1186/s13023-021-01793-6] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Accepted: 03/30/2021] [Indexed: 11/30/2022] Open
Abstract
Background Facioscapulohumeral muscular dystrophy (FSHD) is among the most prevalent muscular dystrophies and currently has no treatment. Clinical and genetic heterogeneity are the main challenges to a full comprehension of the physiopathological mechanism. Improving our knowledge of FSHD is crucial to the development of future therapeutic trials and standards of care. National FSHD registries have been set up to this end. The French National Registry of FSHD combines a clinical evaluation form (CEF) and a self-report questionnaire (SRQ), filled out by a physician with expertise in neuromuscular dystrophies and by the patient, respectively. Aside from favoring recruitment, our strategy was devised to improve data quality. Indeed, the pairwise comparison of data from 281 patients for 39 items allowed for evaluating data accuracy. Kappa or intra-class coefficient (ICC) values were calculated to determine the correlation between answers provided in both the CEF and SRQ. Results Patients and physicians agreed on a majority of questions common to the SRQ and CEF (24 out of 39). Demographic, diagnosis- and care-related questions were generally answered consistently by the patient and the medical practitioner (kappa or ICC values of most items in these groups were greater than 0.8). Muscle function-related items, i.e. FSHD-specific signs, showed an overall medium to poor correlation between data provided in the two forms; the distribution of agreements in this section was markedly spread out and ranged from poor to good. In particular, there was very little agreement regarding the assessment of facial motricity and the presence of a winged scapula. However, patients and physicians agreed very well on the Vignos and Brooke scores. The report of symptoms not specific to FSHD showed general poor consistency. Conclusions Patient and physician answers are largely concordant when addressing quantitative and objective items. Consequently, we updated collection forms by relying more on patient-reported data where appropriate. We hope the revised forms will reduce data collection time while ensuring the same quality standard. With the advent of artificial intelligence and automated decision-making, high-quality and reliable data are critical to develop top-performing algorithms to improve diagnosis, care, and evaluate the efficiency of upcoming treatments.
Supplementary Information The online version contains supplementary material available at 10.1186/s13023-021-01793-6.
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Affiliation(s)
- Benoît Sanson
- Université Côte d'Azur, Service Système Nerveux Périphérique & Muscle, Centre Hospitalier Universitaire de Nice, Nice, France.
| | | | - Céline Guien
- Aix Marseille Univ, INSERM, MMG, Bioinformatics and Genetics, Marseille, France
| | - Luisa Villa
- Université Côte d'Azur, Service Système Nerveux Périphérique & Muscle, Centre Hospitalier Universitaire de Nice, Nice, France
| | - Catherine Eng
- Medical Affairs Department, AFM-Telethon, Evry, France
| | | | - Rafaëlle Bernard
- APHM, Hôpital Timone Enfants, Laboratoire de Génétique Moléculaire, Marseille, France
| | - Pascal Cintas
- Department of Neurology, Toulouse University Hospital, Toulouse, France
| | - Guilhem Solé
- Centre de Référence des Maladies Neuromusculaires AOC, Hôpital Pellegrin, CHU de Bordeaux, Bordeaux, France
| | - Vincent Tiffreau
- Centre de Référence des Maladies Neuromusculaires, Service de Médecine Physique et de Réadaptation, CHU de Lille, Lille, France
| | - Andoni Echaniz-Laguna
- Department of Neurology, APHP, Bicêtre University Hospital, Le Kremlin-Bicêtre, France.,French National Reference Center for Rare Neuropathies (NNERF), Le Kremlin-Bicêtre, France.,INSERM U1195 and Paris-Saclay University, Le Kremlin-Bicêtre, France
| | - Armelle Magot
- Referral Center for Neuromuscular Diseases Atlantique-Occitanie-Caraïbes, CHU Nantes, Nantes, France
| | | | | | - Aleksandra Nadaj-Pakleza
- Centre de Référence des Maladies Neuromusculaires Atlantique-Occitanie-Caraïbes, FILNEMUS, Service de Neurologie, CHU d'Angers, Angers, France.,Centre de Référence des Maladies Neuromusculaires Nord/Est/Île-de-France, Service de Neurologie, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | | | - Christophe Béroud
- Aix Marseille Univ, INSERM, MMG, Bioinformatics and Genetics, Marseille, France.,APHM, Hôpital Timone Enfants, Laboratoire de Génétique Moléculaire, Marseille, France
| | - Sabrina Sacconi
- Université Côte d'Azur, Service Système Nerveux Périphérique & Muscle, Centre Hospitalier Universitaire de Nice, Nice, France.,Institute for Research on Cancer and Aging of Nice (IRCAN), INSERM U1081, CNRS UMR 7284, Faculté de Médecine, Université Côte d'Azur (UCA), Nice, France
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Laberthonnière C, Novoa-Del-Toro EM, Delourme M, Chevalier R, Broucqsault N, Mazaleyrat K, Streichenberger N, Manel V, Bernard R, Salort Campana E, Attarian S, Nguyen K, Robin JD, Baudot A, Magdinier F. Facioscapulohumeral dystrophy weakened sarcomeric contractility is mimicked in induced pluripotent stem cells-derived innervated muscle fibres. J Cachexia Sarcopenia Muscle 2022; 13:621-635. [PMID: 34859613 PMCID: PMC8818656 DOI: 10.1002/jcsm.12835] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 09/14/2021] [Accepted: 09/20/2021] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Facioscapulohumeral dystrophy (FSHD) is a late-onset autosomal dominant form of muscular dystrophy involving specific groups of muscles with variable weakness that precedes inflammatory response, fat infiltration, and muscle atrophy. As there is currently no cure for this disease, understanding and modelling the typical muscle weakness in FSHD remains a major milestone towards deciphering the disease pathogenesis as it will pave the way to therapeutic strategies aimed at correcting the functional muscular defect in patients. METHODS To gain further insights into the specificity of the muscle alteration in this disease, we derived induced pluripotent stem cells from patients affected with Types 1 and 2 FSHD but also from patients affected with Bosma arhinia and microphthalmia. We differentiated these cells into contractile innervated muscle fibres and analysed their transcriptome by RNA Seq in comparison with cells derived from healthy donors. To uncover biological pathways altered in the disease, we applied MOGAMUN, a multi-objective genetic algorithm that integrates multiplex complex networks of biological interactions (protein-protein interactions, co-expression, and biological pathways) and RNA Seq expression data to identify active modules. RESULTS We identified 132 differentially expressed genes that are specific to FSHD cells (false discovery rate < 0.05). In FSHD, the vast majority of active modules retrieved with MOGAMUN converges towards a decreased expression of genes encoding proteins involved in sarcomere organization (P value 2.63e-12 ), actin cytoskeleton (P value 9.4e-5 ), myofibril (P value 2.19e-12 ), actin-myosin sliding, and calcium handling (with P values ranging from 7.9e-35 to 7.9e-21 ). Combined with in vivo validations and functional investigations, our data emphasize a reduction in fibre contraction (P value < 0.0001) indicating that the muscle weakness that is typical of FSHD clinical spectrum might be associated with dysfunction of calcium release (P value < 0.0001), actin-myosin interactions, motor activity, mechano-transduction, and dysfunctional sarcomere contractility. CONCLUSIONS Identification of biomarkers of FSHD muscle remain critical for understanding the process leading to the pathology but also for the definition of readouts to be used for drug design, outcome measures, and monitoring of therapies. The different pathways identified through a system biology approach have been largely overlooked in the disease. Overall, our work opens new perspectives in the definition of biomarkers able to define the muscle alteration but also in the development of novel strategies to improve muscle function as it provides functional parameters for active molecule screening.
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Affiliation(s)
| | | | - Mégane Delourme
- Aix Marseille Univ, INSERM, Marseille Medical Genetics, MMG, Marseille, France
| | - Raphaël Chevalier
- Aix Marseille Univ, INSERM, Marseille Medical Genetics, MMG, Marseille, France
| | - Natacha Broucqsault
- Aix Marseille Univ, INSERM, Marseille Medical Genetics, MMG, Marseille, France
| | - Kilian Mazaleyrat
- Aix Marseille Univ, INSERM, Marseille Medical Genetics, MMG, Marseille, France
| | - Nathalie Streichenberger
- Neuropathology, Lyon Civil Hospices, Lyon, France.,Neuromyogène Institute, CNRS-UMR 5310, INSERM 1217, Claude Bernard University Lyon 1, University of Lyon, Lyon, France.,Reference Centre for Neuromuscular Diseases, Hospital for Woman Mother Child, Lyon, France
| | - Véronique Manel
- Department of Medical Genetics, Timone Infant Hospital, Marseille, France
| | - Rafaëlle Bernard
- Aix Marseille Univ, INSERM, Marseille Medical Genetics, MMG, Marseille, France.,Reference Centre for Neuromuscular Diseases and ALS, Timone Adult Hospital, Marseille, France
| | | | - Shahram Attarian
- Aix Marseille Univ, INSERM, Marseille Medical Genetics, MMG, Marseille, France
| | - Karine Nguyen
- Aix Marseille Univ, INSERM, Marseille Medical Genetics, MMG, Marseille, France.,Reference Centre for Neuromuscular Diseases and ALS, Timone Adult Hospital, Marseille, France
| | - Jérôme D Robin
- Aix Marseille Univ, INSERM, Marseille Medical Genetics, MMG, Marseille, France
| | - Anais Baudot
- Aix Marseille Univ, INSERM, Marseille Medical Genetics, MMG, Marseille, France
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Bernard R, Shilts M, Strickland B, Skaar E, Halasa N, Edwards K, Brown R, Das S, Nicholson M. 203: The gastrointestinal microbiome in pediatric cystic fibrosis patients and its relationship with BMI. J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)01628-3] [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: 11/27/2022]
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Michelet S, Hascoet C, L’Hénoret V, Bourbigot N, Bernard R, Saïdani N, Talarmin J. Huit ans de lutte antituberculeuse dans un territoire à faible incidence. Infect Dis Now 2021. [DOI: 10.1016/j.idnow.2021.06.224] [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: 11/16/2022]
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Machin G, Simpson R, Sutton G, Bond W, Heaps E, Hayes M, Korniliou S, McMillan J, Norman J, Sposito A, Panicker V, Adamska A, Allen A, Bernard R, Clarke S, Clifford J, Gallagher C, Jowsey J. Novel thermometry approaches to facilitate safe and effective monitoring of nuclear material containers. Nuclear Engineering and Design 2021. [DOI: 10.1016/j.nucengdes.2020.110939] [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] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Nguyen K, Broucqsault N, Chaix C, Roche S, Robin JD, Vovan C, Gerard L, Mégarbané A, Urtizberea JA, Bellance R, Barnérias C, David A, Eymard B, Fradin M, Manel V, Sacconi S, Tiffreau V, Zagnoli F, Cuisset JM, Salort-Campana E, Attarian S, Bernard R, Lévy N, Magdinier F. Deciphering the complexity of the 4q and 10q subtelomeres by molecular combing in healthy individuals and patients with facioscapulohumeral dystrophy. J Med Genet 2019; 56:590-601. [PMID: 31010831 DOI: 10.1136/jmedgenet-2018-105949] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 02/28/2019] [Accepted: 03/24/2019] [Indexed: 12/13/2022]
Abstract
BACKGROUND Subtelomeres are variable regions between telomeres and chromosomal-specific regions. One of the most studied pathologies linked to subtelomeric imbalance is facioscapulohumeral dystrophy (FSHD). In most cases, this disease involves shortening of an array of D4Z4 macrosatellite elements at the 4q35 locus. The disease also segregates with a specific A-type haplotype containing a degenerated polyadenylation signal distal to the last repeat followed by a repetitive array of β-satellite elements. This classification applies to most patients with FSHD. A subset of patients called FSHD2 escapes this definition and carries a mutation in the SMCHD1 gene. We also recently described patients carrying a complex rearrangement consisting of a cis-duplication of the distal 4q35 locus identified by molecular combing. METHODS Using this high-resolution technology, we further investigated the organisation of the 4q35 region linked to the disease and the 10q26 locus presenting with 98% of homology in controls and patients. RESULTS Our analyses reveal a broad variability in size of the different elements composing these loci highlighting the complexity of these subtelomeres and the difficulty for genomic assembly. Out of the 1029 DNA samples analysed in our centre in the last 7 years, we also identified 54 cases clinically diagnosed with FSHD carrying complex genotypes. This includes mosaic patients, patients with deletions of the proximal 4q region and 23 cases with an atypical chromosome 10 pattern, infrequently found in the control population and never reported before. CONCLUSION Overall, this work underlines the complexity of these loci challenging the diagnosis and genetic counselling for this disease.
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Affiliation(s)
- Karine Nguyen
- Medical Genetics, Assistance Publique Hopitaux de Marseille, Marseille, France.,Aix Marseille Univ, INSERM, MMG, Marseille Medical Genetics U1251, Marseille, France
| | - Natacha Broucqsault
- Aix Marseille Univ, INSERM, MMG, Marseille Medical Genetics U1251, Marseille, France
| | - Charlene Chaix
- Medical Genetics, Assistance Publique Hopitaux de Marseille, Marseille, France
| | - Stephane Roche
- Aix Marseille Univ, INSERM, MMG, Marseille Medical Genetics U1251, Marseille, France
| | - Jérôme D Robin
- Aix Marseille Univ, INSERM, MMG, Marseille Medical Genetics U1251, Marseille, France
| | - Catherine Vovan
- Medical Genetics, Assistance Publique Hopitaux de Marseille, Marseille, France
| | - Laurene Gerard
- Medical Genetics, Assistance Publique Hopitaux de Marseille, Marseille, France
| | | | - Jon Andoni Urtizberea
- Pôle Soins de suite et réadaptation handicaps lourds et maladies rares neurologiques, Hôpital Marin, Assistance publique des hopitaux de Paris, Hendaye, France
| | - Remi Bellance
- Hopital Pierre Zobda-Quitman, Fort-de-France, France
| | - Christine Barnérias
- Service de Neurologie infantile, Université Paris Descartes, Sorbonne Paris Cité, Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris, Paris, France.,Centre de Référence de Maladies Neuromusculaires Garches-Necker-Mondor-Hendaye (GNMH), Réseau National Français de la Filière Neuromusculaire (FILNEMUS), Paris, France
| | | | - Bruno Eymard
- Assistance Publique - Hopitaux de Paris, Paris, Île-de-France, France
| | - Melanie Fradin
- Service de Génétique Médicale, Centre De Référence Anomalies du Développement, CHU de Rennes, Rennes, France
| | - Véronique Manel
- Centre référent maladies neuromusculaires rares, Hospices Civils de Lyon, Hôpital Femme Mère Enfant, Bron, France
| | - Sabrina Sacconi
- Peripheral Nervous System, Muscle and ALS Department, Université Côte d'Azur, Nice, France.,Institute for Research on Cancer and Aging of Nice, Université Côte d'Azur, Faculty of Medicine, Nice, France
| | - Vincent Tiffreau
- Centre de Référence des Maladies Neuromusculaires, service de Médecine Physique et de Réadaptation, Centre hospitalier régionale de Lille, Lille, France
| | - Fabien Zagnoli
- Centre de Référence des Maladies Neuromusculaires, CHU Morvan, Brest, France
| | | | - Emmanuelle Salort-Campana
- Aix Marseille Univ, INSERM, MMG, Marseille Medical Genetics U1251, Marseille, France.,Centre de reference des maladies neuromusculaires, Assistance Publique Hopitaux de Marseille, Marseille, France
| | - Shahram Attarian
- Aix Marseille Univ, INSERM, MMG, Marseille Medical Genetics U1251, Marseille, France.,Centre de reference des maladies neuromusculaires, Assistance Publique Hopitaux de Marseille, Marseille, France
| | - Rafaëlle Bernard
- Medical Genetics, Assistance Publique Hopitaux de Marseille, Marseille, France.,Aix Marseille Univ, INSERM, MMG, Marseille Medical Genetics U1251, Marseille, France
| | - Nicolas Lévy
- Medical Genetics, Assistance Publique Hopitaux de Marseille, Marseille, France.,Aix Marseille Univ, INSERM, MMG, Marseille Medical Genetics U1251, Marseille, France
| | - Frederique Magdinier
- Aix Marseille Univ, INSERM, MMG, Marseille Medical Genetics U1251, Marseille, France
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10
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Guien C, Blandin G, Lahaut P, Sanson B, Nehal K, Rabarimeriarijaona S, Bernard R, Lévy N, Sacconi S, Béroud C. The French National Registry of patients with Facioscapulohumeral muscular dystrophy. Orphanet J Rare Dis 2018; 13:218. [PMID: 30514324 PMCID: PMC6280451 DOI: 10.1186/s13023-018-0960-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Accepted: 11/22/2018] [Indexed: 12/19/2022] Open
Abstract
Background Facioscapulohumeral muscular dystrophy is a rare inherited neuromuscular disease with an estimated prevalence of 1/20,000 and France therefore harbors about 3000 FSHD patients. With research progress and the development of targeted therapies, patients’ identification through registries can facilitate and improve recruitment in clinical trials and studies. Results The French National Registry of FSHD patients was designed as a mixed model registry involving both patients and physicians, through self-report and clinical evaluation questionnaires respectively, to collect molecular and clinical data. Because of the limited number of patients, data quality is a major goal of the registry and various automatic data control features have been implemented in the bioinformatics system. In parallel, data are manually validated by molecular and clinical curators. Since its creation in 2013, data from 638 FSHD patients have been collected, representing about 21% of the French FSHD population. The mixed model strategy allowed to collect 59.1% of data from both patients and clinicians; 26 and 14.9% from respectively patients and clinicians only. With the identification of the FSHD1 and FSHD2 forms, specific questionnaires have been designed. Though FSHD2 patients are progressively included, FSHD1 patients still account for the majority (94.9%). The registry is compatible with the FAIR principles as data are Findable, Accessible and Interoperable. We thus used molecular standards and standardized clinical terms used by the FILNEMUS French network of reference centers for the diagnosis and follow-up of patients suffering from a rare neuromuscular disease. The implemented clinical terms mostly map to dictionaries and terminology systems such as SNOMED-CT (75% of terms), CTV3 (61.7%) and NCIt (53.3%). Because of the sensitive nature of data, they are not directly reusable and can only be accessed as aggregated data after evaluation and approval by the registry oversight committee. Conclusions The French National Registry of FSHD patients belongs to a national effort to develop databases, which should now interact with other initiatives to build a European and/or an international FSHD virtual registry for the benefits of patients. It is accessible at www.fshd.fr and various useful information, links, and documents, including a video, are available for patients and professionals. Electronic supplementary material The online version of this article (10.1186/s13023-018-0960-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Céline Guien
- Aix Marseille Univ, INSERM, MMG, Bioinformatics & Genetics, Marseille, France
| | - Gaëlle Blandin
- Aix Marseille Univ, INSERM, MMG, Bioinformatics & Genetics, Marseille, France
| | - Pauline Lahaut
- Université Côte d'Azur, Service Système Nerveux Périphérique, Muscle et SLA, Centre Hospitalier Universitaire de Nice, Nice, France
| | - Benoît Sanson
- Université Côte d'Azur, Service Système Nerveux Périphérique, Muscle et SLA, Centre Hospitalier Universitaire de Nice, Nice, France
| | - Katia Nehal
- APHM, Hôpital Timone Enfants, Laboratoire de Génétique Moléculaire, Marseille, France
| | | | - Rafaëlle Bernard
- APHM, Hôpital Timone Enfants, Laboratoire de Génétique Moléculaire, Marseille, France
| | - Nicolas Lévy
- Aix Marseille Univ, INSERM, MMG, Bioinformatics & Genetics, Marseille, France.,APHM, Hôpital Timone Enfants, Laboratoire de Génétique Moléculaire, Marseille, France
| | - Sabrina Sacconi
- Université Côte d'Azur, Service Système Nerveux Périphérique, Muscle et SLA, Centre Hospitalier Universitaire de Nice, Nice, France.,Institute for Research on Cancer and Aging of Nice (IRCAN), INSERM U1081, CNRS UMR 7284, Université Côte d'Azur (UCA), Faculté de Médecine, Nice, France
| | - Christophe Béroud
- Aix Marseille Univ, INSERM, MMG, Bioinformatics & Genetics, Marseille, France. .,APHM, Hôpital Timone Enfants, Laboratoire de Génétique Moléculaire, Marseille, France.
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11
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Tlemsani C, Zalcman G, Bernard R, Zerouali A, Goldwasser F. Malnutrition in cancer patients: Is late diagnosis a missed opportunity to improve care? Ann Oncol 2018. [DOI: 10.1093/annonc/mdy300.079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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12
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Elmi OI, Cristini-Robbe O, Chen MY, Wei B, Bernard R, Yarekha D, Okada E, Ouendi S, Portier X, Gourbilleau F, Xu T, Stiévenard D. Local Schottky contacts of embedded Ag nanoparticles in Al 2O 3/SiN x :H stacks on Si: a design to enhance field effect passivation of Si junctions. Nanotechnology 2018; 29:285403. [PMID: 29697055 DOI: 10.1088/1361-6528/aac032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
This paper describes an original design leading to the field effect passivation of Si n+-p junctions. Ordered Ag nanoparticle (Ag-NP) arrays with optimal size and coverage fabricated by means of nanosphere lithography and thermal evaporation, were embedded in ultrathin-Al2O3/SiN x :H stacks on the top of implanted Si n+-p junctions, to achieve effective surface passivation. One way to characterize surface passivation is to use photocurrent, sensitive to recombination centers. We evidenced an improvement of photocurrent by a factor of 5 with the presence of Ag NPs. Finite-difference time-domain (FDTD) simulations combining with semi-quantitative calculations demonstrated that such gain was mainly due to the enhanced field effect passivation through the depleted region associated with the Ag-NPs/Si Schottky contacts.
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Affiliation(s)
- O Ibrahim Elmi
- Université de Djibouti, Faculté des Sciences BP 1904, Djibouti
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13
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Rey WJJ, Martin LJ, Bernard R. Fit of a Rayleigh Distribution on Censored Data — Study of Atrial Fibrillation. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1635727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
This paper attempts to verify whether the threat to life caused by the fact that an event is delayed increases with the length of the delay. Such a mechanism would be a safety feature. Assessment is given in the special case of the RRj variate or interval between successive cardiac contractions for patients in atrial fibrillation. Fit of a Rayleigh distribution on censored data and Monte Carlo methodology assessment are discussed.
In terms of reliability theory, we present a linearly increasing failure rate model and test whether the observed process permits its validation.
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14
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Rey W, Bernard R, Vainsel H, Douny B, Demeester M, Boothroyd M, Musoglu E, Bousin L. Automatic Detection of Dysrhythmias in the Coronary Care Unit. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1635702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
An on-line dysrhythmia monitoring system which uses simultaneously peripheral and intra-auricular leads has been developed.Preprocessing hardware converts the ECG signals to pulses related to the P and QRS waves. The pulses are transmitted to and processed by the computer using a program which studies pulse chronological features. Important informations on the basic rhythm and on differential diagnosis of the APC and VPC are displayed in the unit at request. Interactive procedures have been designed to provide great flexibility. The acceptance of the computer system by the clinical staff is discussed and assessment of the routine use is reported.
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15
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Curcella A, Bernard R, Borensztein Y, Lazzeri M, Prévot G. The mechanism for the stabilization and surfactant properties of epitaxial silicene. Nanoscale 2018; 10:2291-2300. [PMID: 29327018 DOI: 10.1039/c7nr06833f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Using real-time in situ scanning tunneling microscopy and density functional theory simulations, we have studied the growth of Si films on Ag(111) beyond the silicene monolayer, evidencing the existence of metastable phases and an original growth mechanism. Above monolayer Si coverage, an initial structure forms, which is identified as an Ag-free Si bilayer with additional Si adatoms. With further deposition, this structure is replaced by a distinct bilayer structure covered by Si trimers and Ag atoms. The formation of these bilayers follows counterintuitive dynamics: they are partially inserted within the Ag substrate and form by expelling, from the underlying substrate, the atoms that reinsert below the adjacent silicene layer. The growth is therefore characterized by an unexpected "surfactant competition" between Ag and silicene: while silicene is a metastable surfactant for the Ag(111) surface, Ag plays the role of a surfactant for thicker diamond-like Si islands. In spite of being thermodynamically unfavoured, the silicene monolayer is, thus, a remarkably stable structure because of the high kinetic barrier for the growth of thicker layers.
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Affiliation(s)
- A Curcella
- Sorbonne Universités, UPMC Univ Paris 06, CNRS-UMR 7588, Institut des NanoSciences de Paris, F-75005, Paris, France.
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16
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Bowsher G, Gibson-Fall F, Bernard R. Negotiating the humanitarian space: new opportunities for action and research. J R Soc Med 2018; 111:81-83. [PMID: 29355446 DOI: 10.1177/0141076818755553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Affiliation(s)
- G Bowsher
- King's Conflict and Health Research Group, King's College London, London SE5 9RJ, UK
| | - F Gibson-Fall
- King's Conflict and Health Research Group, King's College London, London SE5 9RJ, UK
| | - R Bernard
- King's Conflict and Health Research Group, King's College London, London SE5 9RJ, UK
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17
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Nguyen K, Puppo F, Roche S, Gaillard MC, Chaix C, Lagarde A, Pierret M, Vovan C, Olschwang S, Salort-Campana E, Attarian S, Bartoli M, Bernard R, Magdinier F, Levy N. Molecular combing reveals complex 4q35 rearrangements in Facioscapulohumeral dystrophy. Hum Mutat 2017; 38:1432-1441. [DOI: 10.1002/humu.23304] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2016] [Revised: 07/19/2017] [Accepted: 07/22/2017] [Indexed: 12/20/2022]
Affiliation(s)
- Karine Nguyen
- Aix Marseille Université; INSERM GMGF UMR S_910; Marseille 13385 France
- APHM; Département de Génétique Médicale; Hôpital d'enfants de la Timone; Marseille 13385 France
| | - Francesca Puppo
- Aix Marseille Université; INSERM GMGF UMR S_910; Marseille 13385 France
| | - Stéphane Roche
- Aix Marseille Université; INSERM GMGF UMR S_910; Marseille 13385 France
| | | | - Charlène Chaix
- APHM; Département de Génétique Médicale; Hôpital d'enfants de la Timone; Marseille 13385 France
| | - Arnaud Lagarde
- Aix Marseille Université; INSERM GMGF UMR S_910; Marseille 13385 France
| | | | - Catherine Vovan
- APHM; Département de Génétique Médicale; Hôpital d'enfants de la Timone; Marseille 13385 France
| | - Sylviane Olschwang
- Aix Marseille Université; INSERM GMGF UMR S_910; Marseille 13385 France
- APHM; Département de Génétique Médicale; Hôpital d'enfants de la Timone; Marseille 13385 France
- Groupe Ramsay Générale de Santé; Hôpital Clairval; Marseille France
| | - Emmanuelle Salort-Campana
- Aix Marseille Université; INSERM GMGF UMR S_910; Marseille 13385 France
- APHM; Centre de Référence des Maladies Neuromusculaires et de la SLA; Hôpital de la Timone; Marseille 13385 France
| | - Shahram Attarian
- Aix Marseille Université; INSERM GMGF UMR S_910; Marseille 13385 France
- APHM; Centre de Référence des Maladies Neuromusculaires et de la SLA; Hôpital de la Timone; Marseille 13385 France
| | - Marc Bartoli
- Aix Marseille Université; INSERM GMGF UMR S_910; Marseille 13385 France
| | - Rafaëlle Bernard
- Aix Marseille Université; INSERM GMGF UMR S_910; Marseille 13385 France
- APHM; Département de Génétique Médicale; Hôpital d'enfants de la Timone; Marseille 13385 France
| | | | - Nicolas Levy
- Aix Marseille Université; INSERM GMGF UMR S_910; Marseille 13385 France
- APHM; Département de Génétique Médicale; Hôpital d'enfants de la Timone; Marseille 13385 France
- APHM; Centre de Ressources Biologiques; Hôpital de la Timone; Marseille 13385 France
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18
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Bhardwaj S, Mittholiya K, Bhatnagar A, Bernard R, Dharmadhikari JA, Mathur D, Dharmadhikari AK. Inscription of type I and depressed cladding waveguides in lithium niobate using a femtosecond laser. Appl Opt 2017; 56:5692-5697. [PMID: 29047712 DOI: 10.1364/ao.56.005692] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Accepted: 06/13/2017] [Indexed: 06/07/2023]
Abstract
We describe two types of waveguides (type I and depressed cladding) inscribed in lithium niobate using a variable repetition rate (200 kHz-25 MHz), 270 fs duration fiber laser. The type I modification-based waveguides have propagation losses in the range from 1.2 to 10 dB/cm at 1550 nm, depending on experimental parameters. These waveguides are not permanent; they deteriorate over time. Such deterioration of waveguides can be slowed down from 30 days to 100 days by pre-annealing the samples and by writing at a 720 kHz laser repetition rate. The propagation losses measured at 1550 nm show significant improvement for pre-annealed samples. The depressed cladding-inscribed waveguides are permanent, but the propagation loss depends on the number of damage tracks. A track separation of ∼1 μm between adjacent damage tracks yields the lowest propagation loss of 0.5 dB/cm at 1550 nm for a 40 μm diameter waveguide. We observe multimode guidance for sizes in the range of 20-80 μm in these waveguide structures at 1550 nm. Their crystalline nature is found to remain intact, as inferred from second-harmonic generation within the waveguide region.
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19
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Scotet V, L'Hostis C, Duguépéroux I, Rault G, Frachon I, Bernard R, Parent P, Blayau M, Schmitt S, Génin E, Audrézet MP, Férec C. ePS01.3 Cascade carrier testing within CF-affected families: who makes the test and when? J Cyst Fibros 2016. [DOI: 10.1016/s1569-1993(16)30190-4] [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: 11/16/2022]
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20
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Hoeden RVD, Delcourt A&R, Bernard R. Les Tests de Laboratoire Dans Les Icteres. Ecueils et Limites. Acta Clin Belg 2016. [DOI: 10.1080/17843286.1954.11717293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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21
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Meunier H, Bernard R, Winand R, Brassinne A, Verstraete M, Verstraete M. Book reviews. Acta Clin Belg 2016. [DOI: 10.1080/17843286.1975.11717036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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22
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Yu H, d' Allivy Kelly O, Cros V, Bernard R, Bortolotti P, Anane A, Brandl F, Heimbach F, Grundler D. Approaching soft X-ray wavelengths in nanomagnet-based microwave technology. Nat Commun 2016; 7:11255. [PMID: 27063401 PMCID: PMC4831022 DOI: 10.1038/ncomms11255] [Citation(s) in RCA: 111] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Accepted: 03/07/2016] [Indexed: 12/25/2022] Open
Abstract
Seven decades after the discovery of collective spin excitations in microwave-irradiated ferromagnets, there has been a rebirth of magnonics. However, magnetic nanodevices will enable smart GHz-to-THz devices at low power consumption only, if such spin waves (magnons) are generated and manipulated on the sub-100 nm scale. Here we show how magnons with a wavelength of a few 10 nm are exploited by combining the functionality of insulating yttrium iron garnet and nanodisks from different ferromagnets. We demonstrate magnonic devices at wavelengths of 88 nm written/read by conventional coplanar waveguides. Our microwave-to-magnon transducers are reconfigurable and thereby provide additional functionalities. The results pave the way for a multi-functional GHz technology with unprecedented miniaturization exploiting nanoscale wavelengths that are otherwise relevant for soft X-rays. Nanomagnonics integrated with broadband microwave circuitry offer applications that are wide ranging, from nanoscale microwave components to nonlinear data processing, image reconstruction and wave-based logic.
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Affiliation(s)
- Haiming Yu
- Physik Department E10, Technische Universität München, James-Franck-Strasse 1, D-85748 Garching bei München, Germany.,Fert Beijing Institute, School of Electronic and Information Engineering, Beihang University, Xueyuan Road 37, Beijing 100191, China
| | - O d' Allivy Kelly
- Unité Mixte de Physique, CNRS, Thales, Univ Paris-Sud, Université Paris-Saclay, 91767 Palaiseau, France
| | - V Cros
- Unité Mixte de Physique, CNRS, Thales, Univ Paris-Sud, Université Paris-Saclay, 91767 Palaiseau, France
| | - R Bernard
- Unité Mixte de Physique, CNRS, Thales, Univ Paris-Sud, Université Paris-Saclay, 91767 Palaiseau, France
| | - P Bortolotti
- Unité Mixte de Physique, CNRS, Thales, Univ Paris-Sud, Université Paris-Saclay, 91767 Palaiseau, France
| | - A Anane
- Unité Mixte de Physique, CNRS, Thales, Univ Paris-Sud, Université Paris-Saclay, 91767 Palaiseau, France
| | - F Brandl
- Physik Department E10, Technische Universität München, James-Franck-Strasse 1, D-85748 Garching bei München, Germany
| | - F Heimbach
- Physik Department E10, Technische Universität München, James-Franck-Strasse 1, D-85748 Garching bei München, Germany
| | - D Grundler
- Physik Department E10, Technische Universität München, James-Franck-Strasse 1, D-85748 Garching bei München, Germany.,Laboratory of Nanoscale Magnetic Materials and Magnonics, Institute of Materials, School of Engineering, École Polytechnique Fédérale de Lausanne, STI-IMX-LMGN, Station 17, CH-1015 Lausanne, Switzerland
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23
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Collet M, de Milly X, d'Allivy Kelly O, Naletov VV, Bernard R, Bortolotti P, Ben Youssef J, Demidov VE, Demokritov SO, Prieto JL, Muñoz M, Cros V, Anane A, de Loubens G, Klein O. Generation of coherent spin-wave modes in yttrium iron garnet microdiscs by spin-orbit torque. Nat Commun 2016; 7:10377. [PMID: 26815737 PMCID: PMC4737803 DOI: 10.1038/ncomms10377] [Citation(s) in RCA: 188] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2015] [Accepted: 12/04/2015] [Indexed: 12/02/2022] Open
Abstract
In recent years, spin–orbit effects have been widely used to produce and detect spin currents in spintronic devices. The peculiar symmetry of the spin Hall effect allows creation of a spin accumulation at the interface between a metal with strong spin–orbit interaction and a magnetic insulator, which can lead to a net pure spin current flowing from the metal into the insulator. This spin current applies a torque on the magnetization, which can eventually be driven into steady motion. Tailoring this experiment on extended films has proven to be elusive, probably due to mode competition. This requires the reduction of both the thickness and lateral size to reach full damping compensation. Here we show clear evidence of coherent spin–orbit torque-induced auto-oscillation in micron-sized yttrium iron garnet discs of thickness 20 nm. Our results emphasize the key role of quasi-degenerate spin-wave modes, which increase the threshold current. Spin-orbit interactions allow for pure spin current to be injected into a ferromagnetic insulator from a current-carrying heavy metal, generating torque on the magnetization. Here, the authors evidence magnetic auto-oscillations driven by spin-orbit torque in thin film microdiscs of yttrium iron garnet.
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Affiliation(s)
- M Collet
- Unité Mixte de Physique CNRS, Thales, Université Paris-Sud, Université Paris-Saclay, 1 avenue A. Fresnel, 91767 Palaiseau, France
| | - X de Milly
- Service de Physique de l'État Condensé, CEA, CNRS, Université Paris-Saclay, CEA Saclay, Orme des Merisiers, 91191 Gif-sur-Yvette, France
| | - O d'Allivy Kelly
- Unité Mixte de Physique CNRS, Thales, Université Paris-Sud, Université Paris-Saclay, 1 avenue A. Fresnel, 91767 Palaiseau, France
| | - V V Naletov
- INAC-SPINTEC, CEA, CNRS and Université Grenoble Alpes, 17 avenue des Martyrs, 38000 Grenoble, France.,Institute of Physics, Kazan Federal University, Kazan 420008, Russian Federation
| | - R Bernard
- Unité Mixte de Physique CNRS, Thales, Université Paris-Sud, Université Paris-Saclay, 1 avenue A. Fresnel, 91767 Palaiseau, France
| | - P Bortolotti
- Unité Mixte de Physique CNRS, Thales, Université Paris-Sud, Université Paris-Saclay, 1 avenue A. Fresnel, 91767 Palaiseau, France
| | - J Ben Youssef
- Laboratoire de Magnétisme de Bretagne CNRS, Université de Bretagne Occidentale, 6 Avenue Le Gorgeu, 29285 Brest, France
| | - V E Demidov
- Department of Physics, University of Muenster, Correnstrasse 2-4, 48149 Muenster, Germany
| | - S O Demokritov
- Department of Physics, University of Muenster, Correnstrasse 2-4, 48149 Muenster, Germany.,Institute of Metal Physics, Ural Division of RAS, Yekaterinburg 620041, Russian Federation
| | - J L Prieto
- Instituto de Sistemas Optoelectrónicos y Microtecnologa (UPM), Ciudad Universitaria, Madrid 28040, Spain
| | - M Muñoz
- IMM-Instituto de Microelectrónica de Madrid (CNM-CSIC), Isaac Newton 8, PTM, Tres Cantos, Madrid E-28760, Spain
| | - V Cros
- Unité Mixte de Physique CNRS, Thales, Université Paris-Sud, Université Paris-Saclay, 1 avenue A. Fresnel, 91767 Palaiseau, France
| | - A Anane
- Unité Mixte de Physique CNRS, Thales, Université Paris-Sud, Université Paris-Saclay, 1 avenue A. Fresnel, 91767 Palaiseau, France
| | - G de Loubens
- Service de Physique de l'État Condensé, CEA, CNRS, Université Paris-Saclay, CEA Saclay, Orme des Merisiers, 91191 Gif-sur-Yvette, France
| | - O Klein
- INAC-SPINTEC, CEA, CNRS and Université Grenoble Alpes, 17 avenue des Martyrs, 38000 Grenoble, France
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Gerber E, Bernard R, Castang S, Chabot N, Coze F, Dreux-Zigha A, Hauser E, Hivin P, Joseph P, Lazarelli C, Letellier G, Olive J, Leonetti JP. Deinococcus as new chassis for industrial biotechnology: biology, physiology and tools. J Appl Microbiol 2015; 119:1-10. [PMID: 25809882 PMCID: PMC4682472 DOI: 10.1111/jam.12808] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Revised: 01/20/2015] [Accepted: 03/03/2015] [Indexed: 11/28/2022]
Abstract
Deinococcus spp are among the most radiation-resistant micro-organisms that have been discovered. They show remarkable resistance to a range of damage caused by ionizing radiation, desiccation, UV radiation and oxidizing agents. Traditionally, Escherichia coli and Saccharomyces cerevisiae have been the two platforms of choice for engineering micro-organisms for biotechnological applications, because they are well understood and easy to work with. However, in recent years, researchers have begun using Deinococcus spp in biotechnologies and bioremediation due to their specific ability to grow and express novel engineered functions. More recently, the sequencing of several Deinococcus spp and comparative genomic analysis have provided new insight into the potential of this genus. Features such as the accumulation of genes encoding cell cleaning systems that eliminate organic and inorganic cell toxic components are widespread among Deinococcus spp. Other features such as the ability to degrade and metabolize sugars and polymeric sugars make Deinococcus spp. an attractive alternative for use in industrial biotechnology.
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Affiliation(s)
- E Gerber
- Deinove, Cap Sigma/ZAC Euromédecine IIGrabels, France
| | - R Bernard
- Deinove, Cap Sigma/ZAC Euromédecine IIGrabels, France
| | - S Castang
- Deinove, Cap Sigma/ZAC Euromédecine IIGrabels, France
| | - N Chabot
- Deinove, Cap Sigma/ZAC Euromédecine IIGrabels, France
| | - F Coze
- Deinove, Cap Sigma/ZAC Euromédecine IIGrabels, France
| | - A Dreux-Zigha
- Deinove, Cap Sigma/ZAC Euromédecine IIGrabels, France
| | - E Hauser
- Deinove, Cap Sigma/ZAC Euromédecine IIGrabels, France
| | - P Hivin
- Deinove, Cap Sigma/ZAC Euromédecine IIGrabels, France
| | - P Joseph
- Deinove, Cap Sigma/ZAC Euromédecine IIGrabels, France
| | - C Lazarelli
- Deinove, Cap Sigma/ZAC Euromédecine IIGrabels, France
| | - G Letellier
- Deinove, Cap Sigma/ZAC Euromédecine IIGrabels, France
| | - J Olive
- Deinove, Cap Sigma/ZAC Euromédecine IIGrabels, France
| | - J-P Leonetti
- Deinove, Cap Sigma/ZAC Euromédecine IIGrabels, France
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25
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Cerino M, Gorokhova S, Béhin A, Urtizberea JA, Kergourlay V, Salvo E, Bernard R, Lévy N, Bartoli M, Krahn M. Novel Pathogenic Variants in a French Cohort Widen the Mutational Spectrum of GNE Myopathy. J Neuromuscul Dis 2015; 2:131-136. [PMID: 27858732 PMCID: PMC5278624 DOI: 10.3233/jnd-150074] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Background: GNE myopathy is a rare autosomal recessively inherited muscle disease resulting from mutations in the gene encoding GNE (UDP-N-acetylglucosamine-2-epimerase/N-acetylmannosamine kinase), a key enzyme in sialic acid biosynthesis. 154 different pathogenic variants have been previously associated with GNE myopathy. Objective: Describe novel pathogenic variants associated with GNE myopathy in a large French cohort. Methods: We analyzed mutational data from 32 GNE myopathy index patients. Novel, as well as previously published pathogenic variants, were examined for possible deleterious effects on splicing. Results: We describe 13 novel pathogenic variants in GNE, identified in the first large French cohort reported to date. We also find that 6 published pathogenic variants might have a previously unrecognized deleterious effect on splicing. Conclusions: Novel pathogenic GNE variants described here raise the total number of different pathogenic variants reported to 167, complementing the recently published GNE mutation update. Our novel findings on possible splice-disrupting effects by several variants suggest that the pathogenicity mechanism of these variants could be reinterpreted, expanding our knowledge about the GNE mutational spectrum.
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Affiliation(s)
- Mathieu Cerino
- Aix Marseille Université, INSERM, GMGF UMR_S 910, 13385, Marseille, France.,APHM, Département de Génétique Médicale, Hôpital Timone Enfants, 13385, Marseille, France
| | - Svetlana Gorokhova
- Aix Marseille Université, INSERM, GMGF UMR_S 910, 13385, Marseille, France
| | - Anthony Béhin
- Institut de Myologie, APHP, Groupe Hospitalier La Pitié Salpêtrière, 75013, Paris, France
| | | | | | - Eric Salvo
- APHM, Département de Génétique Médicale, Hôpital Timone Enfants, 13385, Marseille, France
| | - Rafaëlle Bernard
- APHM, Département de Génétique Médicale, Hôpital Timone Enfants, 13385, Marseille, France
| | | | - Marc Bartoli
- Aix Marseille Université, INSERM, GMGF UMR_S 910, 13385, Marseille, France.,APHM, Département de Génétique Médicale, Hôpital Timone Enfants, 13385, Marseille, France
| | - Martin Krahn
- Aix Marseille Université, INSERM, GMGF UMR_S 910, 13385, Marseille, France.,APHM, Département de Génétique Médicale, Hôpital Timone Enfants, 13385, Marseille, France
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26
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Wilson A, Bernard R, Borensztein Y, Croset B, Cruguel H, Vlad A, Coati A, Garreau Y, Prévot G. Critical Au Concentration for the Stabilization of Au-Cu Nanoparticles on Rutile against Dissociation under Oxygen. J Phys Chem Lett 2015; 6:2050-2055. [PMID: 26266501 DOI: 10.1021/acs.jpclett.5b00791] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Controlling aging of catalysts is of crucial importance to preserve their properties, in particular for bimetallic nanoparticles (NPs) where reaction can modify the composition. Herein, we have studied the stability upon oxygen exposure of gold-copper NPs supported on rutile. We have used in situ scanning tunneling microscopy to follow the evolution of individual Au, Cu and Au-Cu NPs with various compositions grown on the TiO2(110) surface, during each step from their nucleation to their modification with oxygen. We demonstrated a direct relation between the stability of the nanoparticles and their Au concentration. Whereas pure Cu nanoparticles dissociate under O2, Au-Cu NPs containing at least 20% Au are stable. This is explained by a modification of the local density of states of Cu atoms upon alloying.
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Affiliation(s)
- A Wilson
- †Institut des NanoSciences de Paris, Université Paris 6, 4, place Jussieu, 75252 Paris CEDEX 05, France
- ‡Institut des NanoSciences de Paris, UMR CNRS 7588, 4, place Jussieu, 75252 Paris CEDEX 05, France
- §Synchrotron SOLEIL, L'Orme des Merisiers Saint-Aubin - BP 48 91192 Gif-sur-Yvette CEDEX, France
| | - R Bernard
- †Institut des NanoSciences de Paris, Université Paris 6, 4, place Jussieu, 75252 Paris CEDEX 05, France
- ‡Institut des NanoSciences de Paris, UMR CNRS 7588, 4, place Jussieu, 75252 Paris CEDEX 05, France
| | - Y Borensztein
- †Institut des NanoSciences de Paris, Université Paris 6, 4, place Jussieu, 75252 Paris CEDEX 05, France
- ‡Institut des NanoSciences de Paris, UMR CNRS 7588, 4, place Jussieu, 75252 Paris CEDEX 05, France
| | - B Croset
- †Institut des NanoSciences de Paris, Université Paris 6, 4, place Jussieu, 75252 Paris CEDEX 05, France
- ‡Institut des NanoSciences de Paris, UMR CNRS 7588, 4, place Jussieu, 75252 Paris CEDEX 05, France
| | - H Cruguel
- †Institut des NanoSciences de Paris, Université Paris 6, 4, place Jussieu, 75252 Paris CEDEX 05, France
- ‡Institut des NanoSciences de Paris, UMR CNRS 7588, 4, place Jussieu, 75252 Paris CEDEX 05, France
| | - A Vlad
- §Synchrotron SOLEIL, L'Orme des Merisiers Saint-Aubin - BP 48 91192 Gif-sur-Yvette CEDEX, France
| | - A Coati
- §Synchrotron SOLEIL, L'Orme des Merisiers Saint-Aubin - BP 48 91192 Gif-sur-Yvette CEDEX, France
| | - Y Garreau
- ∥Université Paris Diderot, Sorbonne-Paris-Cité, MPQ, UMR 7162 CNRS, Bâtiment Condorcet, Case 7021, 75205 Paris CEDEX 13, France
| | - G Prévot
- †Institut des NanoSciences de Paris, Université Paris 6, 4, place Jussieu, 75252 Paris CEDEX 05, France
- ‡Institut des NanoSciences de Paris, UMR CNRS 7588, 4, place Jussieu, 75252 Paris CEDEX 05, France
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Hamadeh A, d'Allivy Kelly O, Hahn C, Meley H, Bernard R, Molpeceres AH, Naletov VV, Viret M, Anane A, Cros V, Demokritov SO, Prieto JL, Muñoz M, de Loubens G, Klein O. Full control of the spin-wave damping in a magnetic insulator using spin-orbit torque. Phys Rev Lett 2014; 113:197203. [PMID: 25415921 DOI: 10.1103/physrevlett.113.197203] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Indexed: 06/04/2023]
Abstract
It is demonstrated that the threshold current for damping compensation can be reached in a 5 μm diameter YIG(20 nm)|Pt(7 nm) disk. The demonstration rests upon the measurement of the ferromagnetic resonance linewidth as a function of I(dc) using a magnetic resonance force microscope (MRFM). It is shown that the magnetic losses of spin-wave modes existing in the magnetic insulator can be reduced or enhanced by at least a factor of 5 depending on the polarity and intensity of an in-plane dc current I(dc) flowing through the adjacent normal metal with strong spin-orbit interaction. Complete compensation of the damping of the fundamental mode by spin-orbit torque is reached for a current density of ∼3×10(11) A·m(-2), in agreement with theoretical predictions. At this critical threshold the MRFM detects a small change of static magnetization, a behavior consistent with the onset of an auto-oscillation regime.
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Affiliation(s)
- A Hamadeh
- Service de Physique de l'État Condensé (CNRS URA 2464), CEA Saclay, 91191 Gif-sur-Yvette, France
| | - O d'Allivy Kelly
- Unité Mixte de Physique CNRS/Thales and Université Paris Sud 11, 1 avenue Fresnel, 91767 Palaiseau, France
| | - C Hahn
- Service de Physique de l'État Condensé (CNRS URA 2464), CEA Saclay, 91191 Gif-sur-Yvette, France
| | - H Meley
- Service de Physique de l'État Condensé (CNRS URA 2464), CEA Saclay, 91191 Gif-sur-Yvette, France
| | - R Bernard
- Unité Mixte de Physique CNRS/Thales and Université Paris Sud 11, 1 avenue Fresnel, 91767 Palaiseau, France
| | - A H Molpeceres
- Unité Mixte de Physique CNRS/Thales and Université Paris Sud 11, 1 avenue Fresnel, 91767 Palaiseau, France
| | - V V Naletov
- Service de Physique de l'État Condensé (CNRS URA 2464), CEA Saclay, 91191 Gif-sur-Yvette, France and Unité Mixte de Physique CNRS/Thales and Université Paris Sud 11, 1 avenue Fresnel, 91767 Palaiseau, France and Institute of Physics, Kazan Federal University, Kazan 420008, Russian Federation
| | - M Viret
- Service de Physique de l'État Condensé (CNRS URA 2464), CEA Saclay, 91191 Gif-sur-Yvette, France
| | - A Anane
- Unité Mixte de Physique CNRS/Thales and Université Paris Sud 11, 1 avenue Fresnel, 91767 Palaiseau, France
| | - V Cros
- Unité Mixte de Physique CNRS/Thales and Université Paris Sud 11, 1 avenue Fresnel, 91767 Palaiseau, France
| | - S O Demokritov
- Department of Physics, University of Muenster, 48149 Muenster, Germany and Institute of Metal Physics, Ural Division of RAS, Yekaterinburg 620041, Russia
| | - J L Prieto
- Instituto de Sistemas Optoelectrónicos y Microtecnología (UPM), Madrid 28040, Spain
| | - M Muñoz
- Instituto de Microelectrónica de Madrid (CNM, CSIC), Madrid 28760, Spain
| | - G de Loubens
- Service de Physique de l'État Condensé (CNRS URA 2464), CEA Saclay, 91191 Gif-sur-Yvette, France
| | - O Klein
- Service de Physique de l'État Condensé (CNRS URA 2464), CEA Saclay, 91191 Gif-sur-Yvette, France and SPINTEC, UMR CEA/CNRS/UJF-Grenoble 1/Grenoble-INP, INAC, 38054 Grenoble, France
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28
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Trastoy J, Malnou M, Ulysse C, Bernard R, Bergeal N, Faini G, Lesueur J, Briatico J, Villegas JE. Freezing and thawing of artificial ice by thermal switching of geometric frustration in magnetic flux lattices. Nat Nanotechnol 2014; 9:710-715. [PMID: 25129072 DOI: 10.1038/nnano.2014.158] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Accepted: 07/02/2014] [Indexed: 06/03/2023]
Abstract
The problem of an ensemble of repulsive particles on a potential-energy landscape is common to many physical systems and has been studied in multiple artificial playgrounds. However, the latter usually involve fixed energy landscapes, thereby impeding in situ investigations of the particles' collective response to controlled changes in the landscape geometry. Here, we experimentally realize a system in which the geometry of the potential-energy landscape can be switched using temperature as the control knob. This realization is based on a high-temperature superconductor in which we engineer a nanoscale spatial modulation of the superconducting condensate. Depending on the temperature, the flux quanta induced by an applied magnetic field see either a geometrically frustrated energy landscape that favours an ice-like flux ordering, or an unfrustrated landscape that yields a periodic flux distribution. This effect is reflected in a dramatic change in the superconductor's magneto-transport. The thermal switching of the energy landscape geometry opens new opportunities for the study of ordering and reorganization in repulsive particle manifolds.
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Affiliation(s)
- J Trastoy
- 1] Unité Mixte de Physique CNRS/Thales, 1 ave. A. Fresnel, 91767 Palaiseau, France [2] Université Paris Sud, 91405 Orsay, France
| | - M Malnou
- LPEM, ESPCI-CNRS-UPMC, 10 rue Vauquelin 75231 Paris, France
| | - C Ulysse
- CNRS, Phynano Team, Laboratoire de Photonique et de Nanostructures, route de Nozay, 91460 Marcoussis, France
| | - R Bernard
- 1] Unité Mixte de Physique CNRS/Thales, 1 ave. A. Fresnel, 91767 Palaiseau, France [2] Université Paris Sud, 91405 Orsay, France
| | - N Bergeal
- LPEM, ESPCI-CNRS-UPMC, 10 rue Vauquelin 75231 Paris, France
| | - G Faini
- CNRS, Phynano Team, Laboratoire de Photonique et de Nanostructures, route de Nozay, 91460 Marcoussis, France
| | - J Lesueur
- LPEM, ESPCI-CNRS-UPMC, 10 rue Vauquelin 75231 Paris, France
| | - J Briatico
- 1] Unité Mixte de Physique CNRS/Thales, 1 ave. A. Fresnel, 91767 Palaiseau, France [2] Université Paris Sud, 91405 Orsay, France
| | - Javier E Villegas
- 1] Unité Mixte de Physique CNRS/Thales, 1 ave. A. Fresnel, 91767 Palaiseau, France [2] Université Paris Sud, 91405 Orsay, France
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Nguyen K, Putoux A, Busa T, Cordier M, Sigaudy S, Till M, Chabrol B, Michel-Calemard L, Bernard R, Julia S, Malzac P, Labalme A, Missirian C, Edery P, Popovici C, Philip N, Sanlaville D. Incidental findings on array comparative genomic hybridization: detection of carrier females of dystrophinopathy without any family history. Clin Genet 2014; 87:488-91. [DOI: 10.1111/cge.12421] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Revised: 04/23/2014] [Accepted: 05/05/2014] [Indexed: 01/19/2023]
Affiliation(s)
- K. Nguyen
- Département de Génétique Médicale; Hôpital d'enfants de la Timone; Marseille France
| | - A. Putoux
- Service de Génétique; Hospices Civils de Lyon; Lyon France
- CNRL, INSERM U1028, CNRS UMR5292; Université Claude Bernard Lyon 1; Lyon France
| | - T. Busa
- Département de Génétique Médicale; Hôpital d'enfants de la Timone; Marseille France
| | - M.P. Cordier
- Service de Génétique; Hospices Civils de Lyon; Lyon France
| | - S. Sigaudy
- Département de Génétique Médicale; Hôpital d'enfants de la Timone; Marseille France
| | - M. Till
- Service de Génétique; Hospices Civils de Lyon; Lyon France
| | - B. Chabrol
- Service de Pédiatrie et Neuropédiatrie; Hôpital d'enfants de la Timone; Marseille France
| | - L. Michel-Calemard
- Service d'Endocrinologie Moléculaire et Maladies Rares; Hospices Civils de Lyon; Lyon France
| | - R. Bernard
- Département de Génétique Médicale; Hôpital d'enfants de la Timone; Marseille France
| | - S. Julia
- Service de Génétique; CHU de Toulouse; Toulouse France
| | - P. Malzac
- Département de Génétique Médicale; Hôpital d'enfants de la Timone; Marseille France
- UMR 7268 ADES; Aix-Marseille Université-EFS-CNRS; Marseille France
| | - A. Labalme
- Service de Génétique; Hospices Civils de Lyon; Lyon France
| | - C. Missirian
- Département de Génétique Médicale; Hôpital d'enfants de la Timone; Marseille France
| | - P. Edery
- Service de Génétique; Hospices Civils de Lyon; Lyon France
- CNRL, INSERM U1028, CNRS UMR5292; Université Claude Bernard Lyon 1; Lyon France
| | - C. Popovici
- Département de Génétique Médicale; Hôpital d'enfants de la Timone; Marseille France
| | - N. Philip
- Département de Génétique Médicale; Hôpital d'enfants de la Timone; Marseille France
| | - D. Sanlaville
- Service de Génétique; Hospices Civils de Lyon; Lyon France
- CNRL, INSERM U1028, CNRS UMR5292; Université Claude Bernard Lyon 1; Lyon France
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30
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Gaillard MC, Roche S, Dion C, Tasmadjian A, Bouget G, Salort-Campana E, Vovan C, Chaix C, Broucqsault N, Morere J, Puppo F, Bartoli M, Levy N, Bernard R, Attarian S, Nguyen K, Magdinier F. Differential DNA methylation of the D4Z4 repeat in patients with FSHD and asymptomatic carriers. Neurology 2014; 83:733-42. [PMID: 25031281 DOI: 10.1212/wnl.0000000000000708] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [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
OBJECTIVE We investigated the link between DNA hypomethylation and clinical penetrance in facioscapulohumeral dystrophy (FSHD) because hypomethylation is moderate and heterogeneous in patients and could not thus far be correlated with disease presence or severity. METHODS To investigate the link between clinical signs of FSHD and DNA methylation, we explored 95 cases (37 FSHD1, 29 asymptomatic individuals carrying a shortened D4Z4 array, 9 patients with FSHD2, and 20 controls) by implementing 2 approaches: methylated DNA immunoprecipitation and sodium bisulfite sequencing. RESULTS Both methods revealed statistically significant differences between asymptomatic carriers or controls and individuals with clinical FSHD, especially in the proximal region of the repeat. Absence of clinical expression in asymptomatic carriers is associated with a level of methylation similar to controls. CONCLUSIONS We provide a proof of concept that the targeted approaches that we describe could be applied systematically to patient samples in routine diagnosis and suggest that local hypomethylation within D4Z4 might serve as a modifier for clinical expression of FSHD phenotype. CLASSIFICATION OF EVIDENCE This study provides Class III evidence that assays for hypomethylation within the D4Z4 region accurately distinguish patients with FSHD from individuals with D4Z4 contraction without FSHD.
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Affiliation(s)
- Marie-Cécile Gaillard
- From Aix Marseille Universite (M.-C.G., S.R., C.D., A.T., G.B., E.S.-C., N.B., J.M., F.P., M.B., N.L., R.B., S.A., K.N., F.M.), INSERM GMGF UMR S_910, Marseille; and APHM, Centre de Référence des Maladies Neuromusculaires et de la SLA (E.S.-C., S.A.), and APHM, Laboratoire de Génétique Médicale (C.V., C.C., N.L., R.B., K.N.), Hôpital de la Timone, Marseille, France
| | - Stéphane Roche
- From Aix Marseille Universite (M.-C.G., S.R., C.D., A.T., G.B., E.S.-C., N.B., J.M., F.P., M.B., N.L., R.B., S.A., K.N., F.M.), INSERM GMGF UMR S_910, Marseille; and APHM, Centre de Référence des Maladies Neuromusculaires et de la SLA (E.S.-C., S.A.), and APHM, Laboratoire de Génétique Médicale (C.V., C.C., N.L., R.B., K.N.), Hôpital de la Timone, Marseille, France
| | - Camille Dion
- From Aix Marseille Universite (M.-C.G., S.R., C.D., A.T., G.B., E.S.-C., N.B., J.M., F.P., M.B., N.L., R.B., S.A., K.N., F.M.), INSERM GMGF UMR S_910, Marseille; and APHM, Centre de Référence des Maladies Neuromusculaires et de la SLA (E.S.-C., S.A.), and APHM, Laboratoire de Génétique Médicale (C.V., C.C., N.L., R.B., K.N.), Hôpital de la Timone, Marseille, France
| | - Armand Tasmadjian
- From Aix Marseille Universite (M.-C.G., S.R., C.D., A.T., G.B., E.S.-C., N.B., J.M., F.P., M.B., N.L., R.B., S.A., K.N., F.M.), INSERM GMGF UMR S_910, Marseille; and APHM, Centre de Référence des Maladies Neuromusculaires et de la SLA (E.S.-C., S.A.), and APHM, Laboratoire de Génétique Médicale (C.V., C.C., N.L., R.B., K.N.), Hôpital de la Timone, Marseille, France
| | - Gwenaëlle Bouget
- From Aix Marseille Universite (M.-C.G., S.R., C.D., A.T., G.B., E.S.-C., N.B., J.M., F.P., M.B., N.L., R.B., S.A., K.N., F.M.), INSERM GMGF UMR S_910, Marseille; and APHM, Centre de Référence des Maladies Neuromusculaires et de la SLA (E.S.-C., S.A.), and APHM, Laboratoire de Génétique Médicale (C.V., C.C., N.L., R.B., K.N.), Hôpital de la Timone, Marseille, France
| | - Emmanuelle Salort-Campana
- From Aix Marseille Universite (M.-C.G., S.R., C.D., A.T., G.B., E.S.-C., N.B., J.M., F.P., M.B., N.L., R.B., S.A., K.N., F.M.), INSERM GMGF UMR S_910, Marseille; and APHM, Centre de Référence des Maladies Neuromusculaires et de la SLA (E.S.-C., S.A.), and APHM, Laboratoire de Génétique Médicale (C.V., C.C., N.L., R.B., K.N.), Hôpital de la Timone, Marseille, France
| | - Catherine Vovan
- From Aix Marseille Universite (M.-C.G., S.R., C.D., A.T., G.B., E.S.-C., N.B., J.M., F.P., M.B., N.L., R.B., S.A., K.N., F.M.), INSERM GMGF UMR S_910, Marseille; and APHM, Centre de Référence des Maladies Neuromusculaires et de la SLA (E.S.-C., S.A.), and APHM, Laboratoire de Génétique Médicale (C.V., C.C., N.L., R.B., K.N.), Hôpital de la Timone, Marseille, France
| | - Charlene Chaix
- From Aix Marseille Universite (M.-C.G., S.R., C.D., A.T., G.B., E.S.-C., N.B., J.M., F.P., M.B., N.L., R.B., S.A., K.N., F.M.), INSERM GMGF UMR S_910, Marseille; and APHM, Centre de Référence des Maladies Neuromusculaires et de la SLA (E.S.-C., S.A.), and APHM, Laboratoire de Génétique Médicale (C.V., C.C., N.L., R.B., K.N.), Hôpital de la Timone, Marseille, France
| | - Natacha Broucqsault
- From Aix Marseille Universite (M.-C.G., S.R., C.D., A.T., G.B., E.S.-C., N.B., J.M., F.P., M.B., N.L., R.B., S.A., K.N., F.M.), INSERM GMGF UMR S_910, Marseille; and APHM, Centre de Référence des Maladies Neuromusculaires et de la SLA (E.S.-C., S.A.), and APHM, Laboratoire de Génétique Médicale (C.V., C.C., N.L., R.B., K.N.), Hôpital de la Timone, Marseille, France
| | - Julia Morere
- From Aix Marseille Universite (M.-C.G., S.R., C.D., A.T., G.B., E.S.-C., N.B., J.M., F.P., M.B., N.L., R.B., S.A., K.N., F.M.), INSERM GMGF UMR S_910, Marseille; and APHM, Centre de Référence des Maladies Neuromusculaires et de la SLA (E.S.-C., S.A.), and APHM, Laboratoire de Génétique Médicale (C.V., C.C., N.L., R.B., K.N.), Hôpital de la Timone, Marseille, France
| | - Francesca Puppo
- From Aix Marseille Universite (M.-C.G., S.R., C.D., A.T., G.B., E.S.-C., N.B., J.M., F.P., M.B., N.L., R.B., S.A., K.N., F.M.), INSERM GMGF UMR S_910, Marseille; and APHM, Centre de Référence des Maladies Neuromusculaires et de la SLA (E.S.-C., S.A.), and APHM, Laboratoire de Génétique Médicale (C.V., C.C., N.L., R.B., K.N.), Hôpital de la Timone, Marseille, France
| | - Marc Bartoli
- From Aix Marseille Universite (M.-C.G., S.R., C.D., A.T., G.B., E.S.-C., N.B., J.M., F.P., M.B., N.L., R.B., S.A., K.N., F.M.), INSERM GMGF UMR S_910, Marseille; and APHM, Centre de Référence des Maladies Neuromusculaires et de la SLA (E.S.-C., S.A.), and APHM, Laboratoire de Génétique Médicale (C.V., C.C., N.L., R.B., K.N.), Hôpital de la Timone, Marseille, France
| | - Nicolas Levy
- From Aix Marseille Universite (M.-C.G., S.R., C.D., A.T., G.B., E.S.-C., N.B., J.M., F.P., M.B., N.L., R.B., S.A., K.N., F.M.), INSERM GMGF UMR S_910, Marseille; and APHM, Centre de Référence des Maladies Neuromusculaires et de la SLA (E.S.-C., S.A.), and APHM, Laboratoire de Génétique Médicale (C.V., C.C., N.L., R.B., K.N.), Hôpital de la Timone, Marseille, France
| | - Rafaëlle Bernard
- From Aix Marseille Universite (M.-C.G., S.R., C.D., A.T., G.B., E.S.-C., N.B., J.M., F.P., M.B., N.L., R.B., S.A., K.N., F.M.), INSERM GMGF UMR S_910, Marseille; and APHM, Centre de Référence des Maladies Neuromusculaires et de la SLA (E.S.-C., S.A.), and APHM, Laboratoire de Génétique Médicale (C.V., C.C., N.L., R.B., K.N.), Hôpital de la Timone, Marseille, France
| | - Shahram Attarian
- From Aix Marseille Universite (M.-C.G., S.R., C.D., A.T., G.B., E.S.-C., N.B., J.M., F.P., M.B., N.L., R.B., S.A., K.N., F.M.), INSERM GMGF UMR S_910, Marseille; and APHM, Centre de Référence des Maladies Neuromusculaires et de la SLA (E.S.-C., S.A.), and APHM, Laboratoire de Génétique Médicale (C.V., C.C., N.L., R.B., K.N.), Hôpital de la Timone, Marseille, France
| | - Karine Nguyen
- From Aix Marseille Universite (M.-C.G., S.R., C.D., A.T., G.B., E.S.-C., N.B., J.M., F.P., M.B., N.L., R.B., S.A., K.N., F.M.), INSERM GMGF UMR S_910, Marseille; and APHM, Centre de Référence des Maladies Neuromusculaires et de la SLA (E.S.-C., S.A.), and APHM, Laboratoire de Génétique Médicale (C.V., C.C., N.L., R.B., K.N.), Hôpital de la Timone, Marseille, France
| | - Frédérique Magdinier
- From Aix Marseille Universite (M.-C.G., S.R., C.D., A.T., G.B., E.S.-C., N.B., J.M., F.P., M.B., N.L., R.B., S.A., K.N., F.M.), INSERM GMGF UMR S_910, Marseille; and APHM, Centre de Référence des Maladies Neuromusculaires et de la SLA (E.S.-C., S.A.), and APHM, Laboratoire de Génétique Médicale (C.V., C.C., N.L., R.B., K.N.), Hôpital de la Timone, Marseille, France.
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Biard L, Bernard R, Porcher R, Bagot M, Chevret S, Flicoteaux R. Monitoring des index de performance avec la méthode CuSum : exemple du suivi de changements organisationnels au sein d’un service de dermatologie. Rev Epidemiol Sante Publique 2014. [DOI: 10.1016/j.respe.2014.01.045] [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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Cristini-Robbe O, Raulin K, Dubart F, Bernard R, Kinowski C, Damene N, El Yazidi I, Boé A, Turrell S. Corrigendum to ‘Porous silica supports for micro-Raman spectroscopic studies of individual living cells’ [J. Mol. Struct. 1050 (2013) 232–237]. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2013.09.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Ishmukhametova A, Chen JM, Bernard R, de Massy B, Baudat F, Boyer A, Méchin D, Thorel D, Chabrol B, Vincent MC, Khau Van Kien P, Claustres M, Tuffery-Giraud S. Dissecting the Structure and Mechanism of a Complex Duplication-Triplication Rearrangement in theDMDGene. Hum Mutat 2013; 34:1080-4. [DOI: 10.1002/humu.22353] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Accepted: 04/27/2013] [Indexed: 01/21/2023]
Affiliation(s)
- Aliya Ishmukhametova
- Université Montpellier 1; UFR médecine; Montpellier F-34000 France
- CHU Montpellier, Hôpital Arnaud de Villeneuve; Laboratoire de Génétique Moléculaire; Montpellier F-34000 France
| | - Jian-Min Chen
- INSERM U1078 and Établissement Français du Sang (EFS) - Bretagne; Brest F-29218 France
| | - Rafaëlle Bernard
- Laboratoire de Génétique Moléculaire; Hôpital de la Timone CHU; Marseille F-13385 France
| | - Bernard de Massy
- Institut de Génétique Humaine; UPR1142, CNRS; Montpellier France
| | - Frédéric Baudat
- Institut de Génétique Humaine; UPR1142, CNRS; Montpellier France
| | - Amandine Boyer
- Laboratoire de Génétique Moléculaire; Hôpital de la Timone CHU; Marseille F-13385 France
| | - Déborah Méchin
- CHU Montpellier, Hôpital Arnaud de Villeneuve; Laboratoire de Génétique Moléculaire; Montpellier F-34000 France
| | - Delphine Thorel
- CHU Montpellier, Hôpital Arnaud de Villeneuve; Laboratoire de Génétique Moléculaire; Montpellier F-34000 France
| | - Brigitte Chabrol
- CHU La Timone; Service de Neurologie Pédiatrique; Marseille F-13385 France
| | - Marie-Claire Vincent
- CHU Montpellier, Hôpital Arnaud de Villeneuve; Laboratoire de Génétique Moléculaire; Montpellier F-34000 France
| | - Philippe Khau Van Kien
- CHU Montpellier, Hôpital Arnaud de Villeneuve; Laboratoire de Génétique Moléculaire; Montpellier F-34000 France
| | - Mireille Claustres
- Université Montpellier 1; UFR médecine; Montpellier F-34000 France
- CHU Montpellier, Hôpital Arnaud de Villeneuve; Laboratoire de Génétique Moléculaire; Montpellier F-34000 France
- INSERM, U827; Montpellier F-34000 France
| | - Sylvie Tuffery-Giraud
- Université Montpellier 1; UFR médecine; Montpellier F-34000 France
- INSERM, U827; Montpellier F-34000 France
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Noel N, Wechsler B, Bernard R, Resche-Rigon M, Le Thi Huong Boutin D, Dormont D, Cacoub P, Saadoun D. Facteurs pronostiques du neuro-Behçet : analyse d’une série monocentrique de 115 patients. Rev Med Interne 2013. [DOI: 10.1016/j.revmed.2013.03.310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Boubaker C, Hsairi-Guidara I, Castro C, Ayadi I, Boyer A, Kerkeni E, Courageot J, Abid I, Bernard R, Bonello-Palot N, Kamoun F, Cheikh HB, Lévy N, Triki C, Delague V. A novel mutation in FGD4/FRABIN causes Charcot Marie Tooth disease type 4H in patients from a consanguineous Tunisian family. Ann Hum Genet 2013; 77:336-43. [PMID: 23550889 DOI: 10.1111/ahg.12017] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2012] [Accepted: 12/05/2012] [Indexed: 11/28/2022]
Abstract
Charcot-Marie-Tooth (CMT) disease constitutes a clinically and genetically heterogeneous group of hereditary neuropathies characterized by progressive muscular and sensory loss in the distal extremities with chronic distal weakness, deformation of the feet, and loss of deep tendon reflexes. CMT4H is an autosomal recessive demyelinating subtype of CMT, due to mutations in FGD4/FRABIN, for which nine mutations are described to date. In this study, we describe three patients from a consanguineous Tunisian family, presenting with severe, early onset, slowly progressive, autosomal recessive demyelinating CMT, complicated by mild to severe kyphoscoliosis, consistent with CMT4H. In these patients, we report the identification of a novel homozygous frameshift mutation in FGD4: c.514_515insG; p.Ala172Glyfs*27. Our study reports the first mutation identified in FGD4 in Tunisian patients affected with CMT. It further confirms the important clinical heterogeneity observed in patients with mutations in FGD4 and the lack of phenotype/genotype correlations in CMT4H. Our results suggest that FGD4 should be screened in other early-onset CMT subtypes, regardless of the severity of the phenotype, and particularly in patients of consanguineous descent. In Tunisians, as in other populations with high consanguinity rates, screening of genes responsible for rare autosomal recessive CMT subtypes should be prioritized.
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Affiliation(s)
- Chokri Boubaker
- Inserm, UMR_S 910, "Génétique Médicale et Génomique Fonctionnelle", Faculté de Médecine de la Timone, 13385, Marseille, France; Aix-Marseille University, UMR_S 910, "Génétique Médicale et Génomique Fonctionnelle", Faculté de Médecine de la Timone, 13385, Marseille, France; Laboratoire d'Histologie, de Cytologie et de Génétique, Université de Monastir, Faculté de Médecine, Monastir, Tunisia
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Linssen WHJP, de Voogt WG, Krahn M, Bernard R, Levy N, Wokke JHJ, Ginjaar HB, de Visser M. Long-term follow-up study on patients with Miyoshi phenotype of distal muscular dystrophy. Eur J Neurol 2013; 20:968-74. [PMID: 23530687 DOI: 10.1111/ene.12129] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Accepted: 01/31/2013] [Indexed: 11/28/2022]
Abstract
BACKGROUND AND PURPOSE To describe the long-term follow-up of a cohort of 22 patients with the Miyoshi phenotype of distal muscular dystrophy (MMD). METHODS A long-term clinical follow-up study was conducted. Patients were genotyped for dysferlin (MMD1) or anoctamin 5 (MMD3) mutations. Patients also underwent cardiological evaluation. RESULTS There were 10 patients with MMD1, eight patients with MMD3 and four patients with linkage to chromosome 10 (MMD2). All patients deteriorated over 5.7 (range: 4.2-6.6) years of follow-up. Weakness increased significantly (P < 0.035) in all but the neck extensor, serratus anterior, and wrist flexor and extensor muscles. The decrease of strength was most pronounced in the iliopsoas (15%), toe extensors (15%), anterior tibial and peroneal muscles (10%). Patients with MMD1 showed early onset of the disease (mean 22 years) with typically symmetrical distribution of weakness starting in the calf muscles. Patients with MMD1 had a worse clinical course compared with patients with MMD3. Ninety percent of the former had to make use of a wheelchair within 15 years after onset of the disease, whereas patients with MMD3, who have a significantly later onset (mean 35 years) of asymmetrical calf muscle weakness and atrophy, remained ambulant during the first 15 years of their disease. None of the patients with MMD2 became fully confined to the wheelchair. None of the 22 MMD phenotype patients had heart disease. CONCLUSIONS Patients with MMD1 have a worse clinical course compared with patients with MMD3. There are no cardiological abnormalities in all MMD categories.
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Affiliation(s)
- W H J P Linssen
- Department of Neurology, St Lucas Andreas Hospital, Amsterdam, the Netherlands.
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Kellermann A, Trojan M, Müller A, Querbach C, Bernard R. GRP-123 Non Formulary Drug Management – Absurd or Reasonable? Eur J Hosp Pharm 2013. [DOI: 10.1136/ejhpharm-2013-000276.123] [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: 11/03/2022] Open
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Trojan M, Ihbe-Heffinger A, Greinacher A, Unkrig C, Müller A, Bernard R, Querbach C. GRP-095 Improving Medication Safety: The Danaparoid Storey. Eur J Hosp Pharm 2013. [DOI: 10.1136/ejhpharm-2013-000276.095] [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: 11/03/2022] Open
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Félix LA, Sirena M, Guzmán LAA, Sutter JG, Vargas SP, Steren LB, Bernard R, Trastoy J, Villegas JE, Briático J, Bergeal N, Lesueur J, Faini G. Structural and electrical characterization of ultra-thin SrTiO3 tunnel barriers grown over YBa2Cu3O7 electrodes for the development of high Tc Josephson junctions. Nanotechnology 2012; 23:495715. [PMID: 23154521 DOI: 10.1088/0957-4484/23/49/495715] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The transport properties of ultra-thin SrTiO(3) (STO) layers grown over YBa(2)Cu(3)O(7) electrodes were studied by conductive atomic force microscopy at the nano-scale. A very good control of the barrier thickness was achieved during the deposition process. A phenomenological approach was used to obtain critical parameters regarding the structural and electrical properties of the system. The STO layers present an energy barrier of 0.9 eV and an attenuation length of 0.23 nm, indicating very good insulating properties for the development of high-quality Josephson junctions.
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Affiliation(s)
- L Avilés Félix
- Centro Atómico Bariloche, Instituto Balseiro-CNEA, Universidad Nacional de Cuyo, Bariloche, Rio Negro, Argentina.
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Goldman J, Bernard R, Bernard B, Stebbins G. Comparison of Clock Scoring Methods in Detecting Mild Cognitive Impairment and Dementia in Parkinson's Disease (PD4.008). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.pd4.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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41
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Nguyen K, Walrafen P, Bernard R, Attarian S, Chaix C, Vovan C, Renard E, Dufrane N, Pouget J, Vannier A, Bensimon A, Lévy N. Molecular combing reveals allelic combinations in facioscapulohumeral dystrophy. Ann Neurol 2012; 70:627-33. [PMID: 22028222 DOI: 10.1002/ana.22513] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
OBJECTIVE The genetic variation underlying facioscapulohumeral muscular dystrophy (FSHD), 1 of the most common hereditary neuromuscular disorders, is complex, and associated with the contraction of a repeat array (D4Z4) at the subtelomeric end of chromosome 4q. Nonpathogenic variants of 4q and the presence of a homologous array on chromosome 10q make FSHD diagnosis extremely challenging, at least in individuals with nonstandard D4Z4 arrays. We aimed to improve FSHD molecular analysis by proposing an alternative technique to the Southern blot. METHODS We applied molecular combing (MC) to directly visualize allelic combinations associated with FSHD. RESULTS MC enabled the accurate diagnosis of 32 FSHD patients. Unreported haplotypes and rearrangements, as well as somatic mosaicism, which is common in the 10 to 30% of cases that are sporadic, were detectable by MC. INTERPRETATION MC enables the detailed exploration of the FSHD locus and accurate diagnosis of FSHD, the first Mendelian disease to benefit from this technique. MC is also likely to be applicable to other copy number-variant or repeat expansion-associated human diseases.
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Affiliation(s)
- Karine Nguyen
- Assistance Publique-Hôpitaux de Marseille, Department of Medical Genetics, Timone Children's Hospital, Marseille, France
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de Visser M, Linssen W, Wokke J, Bernard R, Lévy N, Ginjaar H. P2.52 Dysferlin and anoctamin 5 mutations in the Dutch distal muscular dystrophy cohort. Neuromuscul Disord 2011. [DOI: 10.1016/j.nmd.2011.06.874] [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: 10/17/2022]
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Poller W, Bernard R, Derst C, Weiss T, Madai V, Veh R. Lateral habenular neurons projecting to reward-processing monoaminergic nuclei express hyperpolarization-activated cyclic nucleotid-gated cation channels. Neuroscience 2011; 193:205-16. [DOI: 10.1016/j.neuroscience.2011.07.013] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2011] [Revised: 07/02/2011] [Accepted: 07/06/2011] [Indexed: 10/18/2022]
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Nouioua S, Hamadouche T, Funalot B, Bernard R, Bellatache N, Bouderba R, Grid D, Assami S, Benhassine T, Levy N, Vallat JM, Tazir M. Novel mutations in the PRX and the MTMR2 genes are responsible for unusual Charcot-Marie-Tooth disease phenotypes. Neuromuscul Disord 2011; 21:543-50. [PMID: 21741241 DOI: 10.1016/j.nmd.2011.04.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2011] [Revised: 04/19/2011] [Accepted: 04/27/2011] [Indexed: 11/30/2022]
Abstract
Autosomal recessive Charcot-Marie-Tooth diseases, relatively common in Algeria due to high prevalence of consanguineous marriages, are clinically and genetically heterogeneous. We report on two consanguineous families with demyelinating autosomal recessive Charcot-Marie-Tooth disease (CMT4) associated with novel homozygous mutations in the MTMR2 gene, c.331dupA (p.Arg111LysfsX24) and PRX gene, c.1090C>T (p.Arg364X) respectively, and peculiar clinical phenotypes. The three patients with MTMR2 mutations (CMT4B1 family) had a typical phenotype of severe early onset motor and sensory neuropathy with typical focally folded myelin on nerve biopsy. Associated clinical features included vocal cord paresis, prominent chest deformities and claw hands. Contrasting with the classical presentation of CMT4F (early-onset Dejerine-Sottas phenotype), the four patients with PRX mutations (CMT4F family) had essentially a late age of onset and a protracted and relatively benign evolution, although they presented marked spine deformities. These observations broaden the spectrum of clinical phenotypes associated with these two CMT4 forms.
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Affiliation(s)
- Sonia Nouioua
- Service de Neurologie, CHU Mustapha Bacha, Algiers, Algeria
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Paessens BJ, von Schilling C, Berger K, Shlaen M, Müller-Thomas C, Bernard R, Peschel C, Ihbe-Heffinger A. Health resource consumption and costs attributable to chemotherapy-induced toxicity in German routine hospital care in lymphoproliferative disorder and NSCLC patients. Ann Oncol 2011; 22:2310-9. [PMID: 21343378 DOI: 10.1093/annonc/mdq759] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Multidrug chemotherapy (CT) is still associated with relevant side-effects. We assessed, under current practice patterns, frequency and severity of CT-induced toxicity and its economic consequences. PATIENTS AND METHODS Prospective, multicentre, longitudinal, observational cohort study with lymphoproliferative disorder (LPD) and non-small-cell lung cancer (NSCLC) patients, receiving first- or second-line (immuno-) CT (excluding myeloablative CT). Data were collected from patient interviews and preplanned chart reviews. Costs in 2007 euros are presented from the provider perspective. RESULTS Two hundred and seventy-three patients (n = 153 LPD; n = 120 NSCLC) undergoing a total of 1004 CT cycles were assessable (age ≥65 years, 40%; female, 36%; Eastern Cooperative Oncology Group performance status ≥2, 11%; tumour stage ≥III, 56%; history of comorbidity, 80%). Fifty percent of cycles were associated with grade 3/4 toxicity and 37% (n = 371) with at least one hospital stay (outpatient/day care n = 154; intensive care n = 19). Mean (median) toxicity-related costs amounted to €1032 (€86) per cycle. Costs rose exponentially with the number of grade 3/4 adverse drug reactions (ADRs) and were highest in cycles affected by more than four ADRs, €10 881 (€5455); in cycles with intensive care, €14 121 (€8833); and in cycles affected by grade 3/4 infections and febrile neutropenia/leukopenia, €7093 (€4531) and €5170 (€2899), respectively. Five percent of CT cycles accounted for 56% of total expenses. CONCLUSIONS Individualised supportive care strategies are needed. Future research should focus on identifying toxicity clusters and patient characteristics predictive for high costs.
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Affiliation(s)
- B J Paessens
- Department of Hospital Pharmacy, Technische Universität München, Munich, Germany
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Villegas JE, Swiecicki I, Bernard R, Crassous A, Briatico J, Wolf T, Bergeal N, Lesueur J, Ulysse C, Faini G, Hallet X, Piraux L. Imprinting nanoporous alumina patterns into the magneto-transport of oxide superconductors. Nanotechnology 2011; 22:075302. [PMID: 21233542 DOI: 10.1088/0957-4484/22/7/075302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We used oxygen ion irradiation to transfer the nanoscale pattern of a porous alumina mask into high-T(C) superconducting thin films. This causes a nanoscale spatial modulation of superconductivity and strongly affects the magneto-transport below T(C), which shows a series of periodic oscillations reminiscent of the Little-Parks effect in superconducting wire networks. This irradiation technique could be extended to other oxide materials in order to induce ordered nanoscale phase segregation.
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Affiliation(s)
- J E Villegas
- Unité Mixte de Physique CNRS/Thales, Palaiseau, France.
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Bernard R, Benhamou D, Beloeil H. Prescription des examens biologiques préopératoires : audit des pratiques dans un hôpital universitaire et mise en place de recommandations locales. ACTA ACUST UNITED AC 2010; 29:868-73. [DOI: 10.1016/j.annfar.2010.09.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2010] [Accepted: 09/16/2010] [Indexed: 11/28/2022]
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Bernard R, Vallee F, Mateo J, Marsella M, George B, Payen D, Chibbaro S. Uncontrollable high-frequency tachypnea: a rare and nearly fatal complication of endoscopic third ventriculostomy: case report and literature review. Minim Invasive Neurosurg 2010; 53:270-272. [PMID: 21302196 DOI: 10.1055/s-0030-1269874] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
BACKGROUND Endoscopic third ventriculostomy (ETV) is considered a safe procedure although it carries its rate of risks and complications that may occasionally be life-threatening. CASE REPORT This is a report about a 48-year-old woman presenting with progressive gait unsteadiness, weakness of the lower extremities and cognitive impairment due to tri-ventricular hydrocephalus. This was treated with standard ETV. In the immediate post-operative period the patient developed a severe and uncontrollable tachypnea requiring sedation, intubation and mechanical ventilation. CONCLUSION Tachypnea may be an early complication after standard ETV and although its mechanism remains yet unclear, we speculate that it may be related to excessive traction and/or surgical manipulation of the floor of the third ventricle. Supportive care with mechanical ventilation is the mainstay of treatment until spontaneous normalization of the respiratory mechanism occurs.
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Affiliation(s)
- R Bernard
- Neuro-ICU, Lariboisere University Hospital, Paris, France
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Bernard R, Schmitt T. Genetic poverty of an extremely specialized wetland species, Nehalennia speciosa: implications for conservation (Odonata: Coenagrionidae). Bull Entomol Res 2010; 100:405-413. [PMID: 19930770 DOI: 10.1017/s0007485309990381] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Oligo- and mesotrophic wetlands, such as bogs, fens and swamps, have become more and more restricted in Europe, and wetland species related to them have increasingly been threatened. Due to increasing habitat fragmentation, the exchange of individuals of these species among sites and, as a consequence, gene flow has been reduced or even eliminated. Therefore, we analysed the genetic structure of 11 populations of an endangered stenotopic damselfly, Nehalennia speciosa (Odonata: Coenagrionidae), in Poland and Lithuania by means of allozyme electrophoresis of 14 gene loci. The overall genetic diversity of all populations was low (A: 1.32; H: 2.6%; Ptot: 29.2%), and no significant differences were observed among the different groupings of populations (degree of fragmentation, habitat type and size, population size). The genetic differentiation among populations was also low (FST: 2.0%) and no regional groups were detected. A low degree of isolation by distance was observed for genetic distances. Taking into account these results, the conservation effort for this species should be focused on large local populations and not necessarily on metapopulation structures. Furthermore, N. speciosa could be (re-)introduced in extinct patches and seemingly suitable localities. Genetically, such relocations should be feasible due to the generally high genetic homogeneity of populations.
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Affiliation(s)
- R Bernard
- Department of General Zoology, Adam Mickiewicz University, Umultowska, Poznan, Poland.
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Mayer SC, Ihbe-Heffinger A, Paessens B, Schwarz-Boeger UR, Ettl J, Paepke S, Bernard R, Harbeck N, Kiechle M, Jacobs VR. Comparison of hospital costs versus DRG reimbursement for treatment of febrile neutropenia during adjuvant CTX for primary breast cancer. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.6150] [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: 11/20/2022] Open
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