1
|
Mkaouar R, Riahi Z, Marrakchi J, Mezzi N, Romdhane L, Boujemaa M, Dallali H, Sayeb M, Lahbib S, Jaouadi H, Boudabbous H, Zekri L, Chargui M, Messaoud O, Elyounsi M, Kraoua I, Zaouak A, Turki I, Mokni M, Boucher S, Petit C, Giraudet F, Mbarek C, Besbes G, Halayem S, Zainine R, Turki H, Tounsi A, Bonnet C, Mrad R, Abdelhak S, Trabelsi M, Charfeddine C. Current phenotypic and genetic spectrum of syndromic deafness in Tunisia: paving the way for precision auditory health. Front Genet 2024; 15:1384094. [PMID: 38711914 PMCID: PMC11072975 DOI: 10.3389/fgene.2024.1384094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Accepted: 03/15/2024] [Indexed: 05/08/2024] Open
Abstract
Hearing impairment (HI) is a prevalent neurosensory condition globally, impacting 5% of the population, with over 50% of congenital cases attributed to genetic etiologies. In Tunisia, HI underdiagnosis prevails, primarily due to limited access to comprehensive clinical tools, particularly for syndromic deafness (SD), characterized by clinical and genetic heterogeneity. This study aimed to uncover the SD spectrum through a 14-year investigation of a Tunisian cohort encompassing over 700 patients from four referral centers (2007-2021). Employing Sanger sequencing, Targeted Panel Gene Sequencing, and Whole Exome Sequencing, genetic analysis in 30 SD patients identified diagnoses such as Usher syndrome, Waardenburg syndrome, cranio-facial-hand-deafness syndrome, and H syndrome. This latter is a rare genodermatosis characterized by HI, hyperpigmentation, hypertrichosis, and systemic manifestations. A meta-analysis integrating our findings with existing data revealed that nearly 50% of Tunisian SD cases corresponded to rare inherited metabolic disorders. Distinguishing between non-syndromic and syndromic HI poses a challenge, where the age of onset and progression of features significantly impact accurate diagnoses. Despite advancements in local genetic characterization capabilities, certain ultra-rare forms of SD remain underdiagnosed. This research contributes critical insights to inform molecular diagnosis approaches for SD in Tunisia and the broader North-African region, thereby facilitating informed decision-making in clinical practice.
Collapse
Affiliation(s)
- Rahma Mkaouar
- Laboratory of Biomedical Genomics and Oncogenetics LR16IPT05, Pasteur Institute in Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - Zied Riahi
- Laboratory of Biomedical Genomics and Oncogenetics LR16IPT05, Pasteur Institute in Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - Jihene Marrakchi
- Laboratory of Biomedical Genomics and Oncogenetics LR16IPT05, Pasteur Institute in Tunis, University of Tunis El Manar, Tunis, Tunisia
- Department of Otorhinolaryngology, District Hospital of Menzel Bourguiba, Bizerte, Tunisia
| | - Nessrine Mezzi
- Laboratory of Biomedical Genomics and Oncogenetics LR16IPT05, Pasteur Institute in Tunis, University of Tunis El Manar, Tunis, Tunisia
- Department of Biology, Faculty of Sciences of Bizerte, Université Tunis Carthage, Tunis, Tunisia
| | - Lilia Romdhane
- Laboratory of Biomedical Genomics and Oncogenetics LR16IPT05, Pasteur Institute in Tunis, University of Tunis El Manar, Tunis, Tunisia
- Department of Biology, Faculty of Sciences of Bizerte, Université Tunis Carthage, Tunis, Tunisia
| | - Maroua Boujemaa
- Laboratory of Biomedical Genomics and Oncogenetics LR16IPT05, Pasteur Institute in Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - Hamza Dallali
- Laboratory of Biomedical Genomics and Oncogenetics LR16IPT05, Pasteur Institute in Tunis, University of Tunis El Manar, Tunis, Tunisia
- Genetic Typing Service, Institut Pasteur of Tunis, Tunis, Tunisia
| | - Marwa Sayeb
- Laboratory of Biomedical Genomics and Oncogenetics LR16IPT05, Pasteur Institute in Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - Saida Lahbib
- Laboratory of Biomedical Genomics and Oncogenetics LR16IPT05, Pasteur Institute in Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - Hager Jaouadi
- Laboratory of Biomedical Genomics and Oncogenetics LR16IPT05, Pasteur Institute in Tunis, University of Tunis El Manar, Tunis, Tunisia
- Marseille Medical Genetics (MMG) U1251, Aix Marseille Université, INSERM, Marseille, France
| | - Hela Boudabbous
- Department of Pediatrics, La Rabta Hospital, Tunis, Tunisia
- Laboratory of Hereditary Diseases of the Metabolism Investigation and Patients Management, Faculty of Medicine in Tunis, University of Tunis El Manar, Tunis, Tunisia
- Department of Epidemiology and Public Health, Directorate General of Military Health, Faculty of Medicine in Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - Lotfi Zekri
- Laboratory of Biomedical Genomics and Oncogenetics LR16IPT05, Pasteur Institute in Tunis, University of Tunis El Manar, Tunis, Tunisia
- ICHARA Association (International Research Institute on Sign Language), Tunis, Tunisia
| | - Mariem Chargui
- Laboratory of Biomedical Genomics and Oncogenetics LR16IPT05, Pasteur Institute in Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - Olfa Messaoud
- Laboratory of Biomedical Genomics and Oncogenetics LR16IPT05, Pasteur Institute in Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - Meriem Elyounsi
- Department of Congenital and Hereditary Diseases, Charles Nicolle Hospital in Tunis, Tunis, Tunisia
- LR99ES10 Laboratory of Human Genetics, Faculty of Medicine in Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - Ichraf Kraoua
- Child and Adolescent Neurology Department of Neurology, National Institute of Neurology, Tunis, Tunisia
- LR18SP04 Department of Child Neurology, National Institute Mongi Ben Hmida of Neurology in Tunis. University of Tunis El Manar, Tunis, Tunisia
| | - Anissa Zaouak
- Department of Dermatology, Habib Thameur Hospital, Research Unit Genodermatoses and Cancers LR12SP03, Tunis, Tunisia
| | - Ilhem Turki
- Child and Adolescent Neurology Department of Neurology, National Institute of Neurology, Tunis, Tunisia
- LR18SP04 Department of Child Neurology, National Institute Mongi Ben Hmida of Neurology in Tunis. University of Tunis El Manar, Tunis, Tunisia
| | - Mourad Mokni
- Service de dermatologie, Hôpital La Rabta, Unité de recherche UR 12SP07, Hôpital La Rabta, Tunis, Tunisia
| | - Sophie Boucher
- Service d’ORL et chirurgie cervico-faciale, CHU d’Angers, Angers, France
- Equipe Mitolab, Institut Mitovasc, CNRS UMR6015, UMR Inserm 1083, Université d’Angers, Angers, France
| | - Christine Petit
- Institut Pasteur, Université Paris Cité, Inserm UA06, Institut de l’Audition, Paris, France
- Collège de France, Paris, France
| | - Fabrice Giraudet
- Unité Mixte de Recherche (UMR) 1107, INSERM, Clermont-Ferrand, France
- Centre Auditif SoluSons, Clermont-Ferrand, France
| | - Chiraz Mbarek
- ENT Department, Habib Thameur Hospital, Tunis, Tunisia
| | - Ghazi Besbes
- Department of Otorhinolaryngology and Maxillofacial Surgery - La Rabta Hospital in Tunis, Tunis, Tunisia
| | - Soumeyya Halayem
- Laboratory of Biomedical Genomics and Oncogenetics LR16IPT05, Pasteur Institute in Tunis, University of Tunis El Manar, Tunis, Tunisia
- Service de pédopsychiatrie, Hôpital Razi, Faculté de Médecine de Tunis, Université Tunis el Manar, Tunis, Tunisia
| | - Rim Zainine
- Laboratory of Biomedical Genomics and Oncogenetics LR16IPT05, Pasteur Institute in Tunis, University of Tunis El Manar, Tunis, Tunisia
- Department of Otorhinolaryngology and Maxillofacial Surgery - La Rabta Hospital in Tunis, Tunis, Tunisia
| | - Hamida Turki
- Dermatology Department Hedi Chaker University Hospital, Sfax University Sfax Tunisia, Tunis, Tunisia
| | | | - Crystel Bonnet
- Institut Pasteur, Université Paris Cité, Inserm UA06, Institut de l’Audition, Paris, France
| | - Ridha Mrad
- Department of Congenital and Hereditary Diseases, Charles Nicolle Hospital in Tunis, Tunis, Tunisia
- LR99ES10 Laboratory of Human Genetics, Faculty of Medicine in Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - Sonia Abdelhak
- Laboratory of Biomedical Genomics and Oncogenetics LR16IPT05, Pasteur Institute in Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - Mediha Trabelsi
- Department of Congenital and Hereditary Diseases, Charles Nicolle Hospital in Tunis, Tunis, Tunisia
- LR99ES10 Laboratory of Human Genetics, Faculty of Medicine in Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - Cherine Charfeddine
- Laboratory of Biomedical Genomics and Oncogenetics LR16IPT05, Pasteur Institute in Tunis, University of Tunis El Manar, Tunis, Tunisia
| |
Collapse
|
2
|
Petit C, Saillard C, Mohty B, Hicheri Y, Villetard F, Maisano V, Charbonnier A, Rey J, D'Incan E, Rouzaud C, Gelsi-Boyer V, Murati A, Lhoumeau AC, Ittel A, Mozziconacci MJ, Alary AS, Hospital MA, Vey N, Garciaz S. Azacitidine-venetoclax versus azacitidine salvage treatment for primary induction failure or first relapsed acute myeloid leukaemia patients. Eur J Haematol 2024; 112:530-537. [PMID: 38031389 DOI: 10.1111/ejh.14140] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 11/09/2023] [Accepted: 11/10/2023] [Indexed: 12/01/2023]
Abstract
OBJECTIVES To compare the efficacy of venetoclax-azacitidine (VEN-AZA) with AZA in the real-life for patients with first relapsed or refractory acute myeloid leukaemia (R/R AML). METHODS We retrospectively analysed R/R AML patients treated with VEN-AZA at the Institut Paoli Calmettes between September 2020 and February 2022. We compared them to a historical cohort of patients treated with AZA between 2010 and 2021. RESULTS Thirty-five patients treated with VEN-AZA were compared with 140 patients treated with AZA. There were more favourable cytogenetics (25.7% vs. 8.6%; p = 0.01) and less FLT3-ITD mutated AML (8.8% vs. 25.5%; p = .049) in the VEN-AZA group. The overall 30-day mortality rate was 7.4% and the overall 90-day mortality was 20%, with no difference between the groups. The complete remission rate was 48.6% in the VEN-AZA group versus 15% (p < .0001). The composite complete response rate was 65.7% in the VEN-AZA group versus 23.6% (p < .0001). OS was 12.8 months in the VEN-AZA group versus 7.3 months (p = 0.059). Patients with primary refractory AML, poor-risk cytogenetics, prior hematopoietic stem-cell transplantation (HSCT) and FLT3-ITD mutated AML had lower response and survival rates. CONCLUSION VEN-AZA was associated with a better response rate and a longer survival than AZA monotherapy in AML patients who relapsed after or were refractory to intensive chemotherapy.
Collapse
Affiliation(s)
- C Petit
- Département d'hématologie, Institut Paoli-Calmettes, Marseille, France
| | - C Saillard
- Département d'hématologie, Institut Paoli-Calmettes, Marseille, France
| | - B Mohty
- Département d'hématologie, Institut Paoli-Calmettes, Marseille, France
| | - Y Hicheri
- Département d'hématologie, Institut Paoli-Calmettes, Marseille, France
| | - F Villetard
- Département d'hématologie, Institut Paoli-Calmettes, Marseille, France
| | - V Maisano
- Département d'hématologie, Institut Paoli-Calmettes, Marseille, France
| | - A Charbonnier
- Département d'hématologie, Institut Paoli-Calmettes, Marseille, France
| | - J Rey
- Département d'hématologie, Institut Paoli-Calmettes, Marseille, France
| | - E D'Incan
- Département d'hématologie, Institut Paoli-Calmettes, Marseille, France
| | - C Rouzaud
- Département d'hématologie, Institut Paoli-Calmettes, Marseille, France
| | - V Gelsi-Boyer
- Département de Biologie des Tumeurs CRCM, Inserm, CNRS, Institut Paoli-Calmettes, Aix-Marseille Univ, Marseille, France
| | - A Murati
- Département de Biologie des Tumeurs, Institut Paoli-Calmettes, Marseille, France
| | - A C Lhoumeau
- Département de Biologie des Tumeurs, Institut Paoli-Calmettes, Marseille, France
| | - A Ittel
- Département de Biologie des Tumeurs, Institut Paoli-Calmettes, Marseille, France
| | - M J Mozziconacci
- Département de Biologie des Tumeurs, Institut Paoli-Calmettes, Marseille, France
| | - A S Alary
- Département de Biologie des Tumeurs, Institut Paoli-Calmettes, Marseille, France
| | - M-A Hospital
- Département d'hématologie, Institut Paoli-Calmettes, Marseille, France
| | - N Vey
- Département d'hématologie, CRCM, Inserm, CNRS, Institut Paoli-Calmettes, Aix-Marseille Univ, Marseille, France
| | - S Garciaz
- Département d'hématologie, CRCM, Inserm, CNRS, Institut Paoli-Calmettes, Aix-Marseille Univ, Marseille, France
| |
Collapse
|
3
|
Petit C, Kourilsky P. [François Gros (1925-2022)]. C R Biol 2024; 346:3-8. [PMID: 38456447 DOI: 10.5802/crbiol.146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 11/07/2023] [Indexed: 03/09/2024]
Abstract
François Gros, a biologist by training, began his research at the Institut Pasteur. In 1961, he discovered the molecular nature of the proposed intermediary between the gene and the protein, a so-called messenger RNA (mRNA), and determined its main characteristics. The author of numerous books, François Gros has helped shape and enlightened the birth of molecular biology and the development of related biotechnologies since the 1970s. He was Professor at the Collège de France and Permanent Secretary of the French Academy of Sciences. Within the Academy, he initiated the creation of a committee for developing countries (COPED). François Gros was a humanist driven by moral rigour and an unfailing sense of commitment.
Collapse
|
4
|
Lahlou G, Calvet C, Simon F, Michel V, Alciato L, Plion B, Boutet de Monvel J, Lecomte MJ, Beraneck M, Petit C, Safieddine S. Extended time frame for restoring inner ear function through gene therapy in Usher1G preclinical model. JCI Insight 2024; 9:e169504. [PMID: 38194286 DOI: 10.1172/jci.insight.169504] [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] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 12/28/2023] [Indexed: 01/10/2024] Open
Abstract
Neonatal gene therapy has been shown to prevent inner ear dysfunction in mouse models of Usher syndrome type I (USH1), the most common genetic cause of combined deafness-blindness and vestibular dysfunction. However, hearing onset occurs after birth in mice and in utero in humans, making it questionable how to transpose murine gene therapy outcomes to clinical settings. Here, we sought to extend the therapeutic time window in a mouse model for USH1G to periods corresponding to human neonatal stages, more suitable for intervention in patients. Mice with deletion of Ush1g (Ush1g-/-) were subjected to gene therapy after the hearing onset. The rescue of inner ear hair cell structure was evaluated by confocal imaging and electron microscopy. Hearing and vestibular function were assessed by recordings of the auditory brain stem response and vestibulo-ocular reflex and by locomotor tests. Up to P21, gene therapy significantly restored both the hearing and balance deficits in Ush1g-/- mice. However, beyond this age and up to P30, vestibular function was restored but not hearing. Our data show that effective gene therapy is possible in Ush1g-/- mice well beyond neonatal stages, implying that the therapeutic window for USH1G may be wide enough to be transposable to newborn humans.
Collapse
Affiliation(s)
- Ghizlene Lahlou
- Institut Pasteur, Université Paris Cité, Inserm, Institut de l'Audition, Paris, France
- Assistance Publique-Hôpitaux de Paris, Sorbonne University, Service d'ORL et de Chirurgie Cervico-Faciale, DMU ChIR, Paris, France
| | - Charlotte Calvet
- Institut Pasteur, Université Paris Cité, Inserm, Institut de l'Audition, Paris, France
| | - François Simon
- Université Paris Cité, Faculté de Médecine, Paris, France
- Université Paris Cité, CNRS UMR 8002, INCC - Integrative Neuroscience and Cognition Center, Paris, France
- Department of Pediatric Otolaryngology, Assistance Publique-Hôpitaux de Paris, Hôpital Necker-Enfants Malades, Paris, France
| | - Vincent Michel
- Institut Pasteur, INSERM, Pathogenesis of Vascular Infections Unit, Paris, France
| | - Lauranne Alciato
- Institut Pasteur, Université Paris Cité, Inserm, Institut de l'Audition, Paris, France
| | - Baptiste Plion
- Institut Pasteur, Université Paris Cité, Inserm, Institut de l'Audition, Paris, France
| | | | - Marie-José Lecomte
- Institut Pasteur, Université Paris Cité, Inserm, Institut de l'Audition, Paris, France
| | - Mathieu Beraneck
- Université Paris Cité, CNRS UMR 8002, INCC - Integrative Neuroscience and Cognition Center, Paris, France
| | - Christine Petit
- Institut Pasteur, Université Paris Cité, Inserm, Institut de l'Audition, Paris, France
- Collège de France, Paris, France
| | - Saaid Safieddine
- Institut Pasteur, Université Paris Cité, Inserm, Institut de l'Audition, Paris, France
- CNRS, Paris, France
| |
Collapse
|
5
|
AitRaise I, Amalou G, Redouane S, Charoute H, Snoussi K, Abdelghaffar H, Bonnet C, Petit C, Barakat A. Novel pathogenic WHRN variant causing hearing loss in a moroccan family. Mol Biol Rep 2023; 50:10663-10669. [PMID: 37924449 DOI: 10.1007/s11033-023-08901-8] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 10/05/2023] [Indexed: 11/06/2023]
Abstract
OBJECTIVES The most prevalent sensory disease in humans is deafness. A variety of genes have been linked to hearing loss, which can either be isolated (non-syndromic) or associated with lesions in other organs (syndromic). It has been discovered that WHRN variants are responsible for non-syndromic hearing loss and Usher syndrome type II. METHODS AND RESULTS Exome sequencing in a consanguineous Moroccan patient with severe hearing loss identified a single homozygous mutation c.619G > T; p.Ala207Ser in WHRN, encoding a cytoskeletal scaffold protein that binds membrane protein complexes to the cytoskeleton in ocular photoreceptors and ear hair cell stereocilia. Bioinformatics methods and molecular dynamic modeling were able to predict the pathogenic implications of this variation. CONCLUSION We used whole exome sequencing to find a homozygous WHRN gene variant in a Moroccan family. Numerous bioinformatics methods predict that this modification might result in a change in the WHRN protein's structure.
Collapse
Affiliation(s)
- Imane AitRaise
- Genomics and Human Genetics Laboratory, Institut Pasteur du Maroc, 1 Place Louis Pasteur, Casablanca, 20360, Morocco
- Laboratory of Biochemistry, Environment and Agri-food, Faculty of Science and Techniques of Mohammedia, Hassan II University of Casablanca, Casablanca, Morocco
| | - Ghita Amalou
- Genomics and Human Genetics Laboratory, Institut Pasteur du Maroc, 1 Place Louis Pasteur, Casablanca, 20360, Morocco
| | - Salaheddine Redouane
- Genomics and Human Genetics Laboratory, Institut Pasteur du Maroc, 1 Place Louis Pasteur, Casablanca, 20360, Morocco
| | - Hicham Charoute
- Research unit of epidemiology, biostatistics and bioinformatics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Khalid Snoussi
- Audition center, Cheikh Khalifa International University Hospital, Casablanca, Morocco
| | - Houria Abdelghaffar
- Laboratory of Biochemistry, Environment and Agri-food, Faculty of Science and Techniques of Mohammedia, Hassan II University of Casablanca, Casablanca, Morocco
| | - Crystel Bonnet
- Institut Pasteur, Université Paris Cité, Inserm, Institut de l'Audition, Paris, F-75012, France
| | - Christine Petit
- Institut Pasteur, Université Paris Cité, Inserm, Institut de l'Audition, Paris, F-75012, France
- Collège de France, Paris, F-75005, France
| | - Abdelhamid Barakat
- Genomics and Human Genetics Laboratory, Institut Pasteur du Maroc, 1 Place Louis Pasteur, Casablanca, 20360, Morocco.
| |
Collapse
|
6
|
AitRaise I, Amalou G, Bakhchane A, Bousfiha A, Abdelghaffar H, Majida C, Bonnet C, Petit C, Barakat A. Homozygous Missense Variants in FOXI1 and TMPRSS3 Genes Associated with Non-syndromic Deafness in Moroccan Families. Biochem Genet 2023:10.1007/s10528-023-10515-5. [PMID: 37777971 DOI: 10.1007/s10528-023-10515-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 09/05/2023] [Indexed: 10/03/2023]
Abstract
One of the most prevalent sensorineural disorders, autosomal recessive non-syndromic hearing loss (ARNSHL) which can affect all age groups, from the newborn (congenital) to the elderly (presbycusis). Important etiologic, phenotypic, and genotypic factors can cause deafness. So far, the high genetic variability that explains deafness makes molecular diagnosis challenging. In Morocco, the GJB2 gene is the primary cause of non-syndromic hereditary deafness, while the existence of a variant in the LRTOMT gene is the second cause of this condition. After excluding these two frequently occurring GJB2 and LRTOMT variants, whole-exome sequencing was carried out in two Moroccan consanguineous families with hearing loss. As a result, two novel variants in the TMPRSS3 (c.1078G>A, p. Ala 360Thr) and FOXI1 (c.6C>G, p. Ser 2Arg) genes have been discovered in deaf patients and the pathogenic effect has been anticipated by several bioinformatics and molecular modeling systems. For the first time, these variants are identified in the Moroccan population, showing the population heterogeneity and demonstrating the value of the WES in hearing loss diagnosis.
Collapse
Affiliation(s)
- Imane AitRaise
- Genomics and Human Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
- Laboratory of Biochemistry, Environment and Agri-food, Faculty of Science and Techniques of Mohammedia, Hassan II University of Casablanca, Casablanca, Morocco
| | - Ghita Amalou
- Genomics and Human Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Amina Bakhchane
- Genomics and Human Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Amale Bousfiha
- Laboratory of Physiopathology and Molecular Genetics, Ben M'sik Faculty of Sciences, Hassan II University, Casablanca, Morocco
| | - Houria Abdelghaffar
- Laboratory of Biochemistry, Environment and Agri-food, Faculty of Science and Techniques of Mohammedia, Hassan II University of Casablanca, Casablanca, Morocco
| | - Charif Majida
- Genetics and Immuno-cell Therapy Team, Mohammed First University, Oujda, Morocco
| | - Crystel Bonnet
- Institut Pasteur, Université Paris Cité, Inserm, Institut de l'Audition, 75012, Paris, France
| | - Christine Petit
- Institut Pasteur, Université Paris Cité, Inserm, Institut de l'Audition, 75012, Paris, France
- Collège de France, 75005, Paris, France
| | - Abdelhamid Barakat
- Genomics and Human Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco.
- Genomics and Human Genetics Laboratory, Département de Recherche Scientifique, Institut Pasteur du Maroc, 1 Place Louis Pasteur, 20360, Casablanca, Morocco.
| |
Collapse
|
7
|
Abstract
Progress in deciphering the genetic architecture of human sensorineural hearing impairment (SNHI) or loss, and multidisciplinary studies of mouse models, have led to the elucidation of the molecular mechanisms underlying auditory system function, primarily in the cochlea, the mammalian hearing organ. These studies have provided unparalleled insights into the pathophysiological processes involved in SNHI, paving the way for the development of inner-ear gene therapy based on gene replacement, gene augmentation or gene editing. The application of these approaches in preclinical studies over the past decade has highlighted key translational opportunities and challenges for achieving effective, safe and sustained inner-ear gene therapy to prevent or cure monogenic forms of SNHI and associated balance disorders.
Collapse
Affiliation(s)
- Christine Petit
- Institut Pasteur, Université Paris Cité, Inserm, Institut de l'Audition, F-75012, Paris, France.
- Collège de France, F-75005, Paris, France.
| | - Crystel Bonnet
- Institut Pasteur, Université Paris Cité, Inserm, Institut de l'Audition, F-75012, Paris, France
| | - Saaïd Safieddine
- Institut Pasteur, Université Paris Cité, Inserm, Institut de l'Audition, F-75012, Paris, France
- Centre National de la Recherche Scientifique, F-75016, Paris, France
| |
Collapse
|
8
|
Salame M, Bonnet C, Moctar ECM, Brahim SM, Dedy A, Vetah LA, Veten F, Hamed CT, Petit C, Houmeida A. Identification a novel pathogenic LRTOMT mutation in Mauritanian families with nonsyndromic deafness. Eur Arch Otorhinolaryngol 2023; 280:4057-4063. [PMID: 36928321 DOI: 10.1007/s00405-023-07907-z] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 02/27/2023] [Indexed: 03/18/2023]
Abstract
PURPOSE Although recessive mutations in GJB2 are the common genetic etiology of sensorineural hearing impairment (SNHI), variants in LRTOMT gene were also identified, mostly in Middle East and North African populations. METHODS Using Sanger sequencing we screened the exon 7 of LRTOMT in a cohort of 128 unrelated Mauritanian children with congenital deafness. RESULTS Only one biallelic missense mutation, predicted as pathogenic (c.179 T > C;p.Leu60Pro) was found at homozygous state in four families. This variant, not reported before, showed a deleterious effect by SIFT (score: 0.01) and a disease-causing effect by Mutation Taster (prob: 1). Exploration of the encoded protein 3D structure revealed a disruption from an organized α helix (in the normal protein structure) into a random conformation. Early fitting of a cochlear implant seemed to improve the audition ability of the mutation carrier. CONCLUSION Further screening using a panel of deafness genes may expose other variants underlying hearing impairment in our population.
Collapse
Affiliation(s)
- Malak Salame
- Unité de Recherche sur les Biomarqueurs dans la Population Mauritanienne, UNA-FST, Nouakchott, Mauritania
| | - Crystel Bonnet
- Institut de l'AuditionInstitut Pasteur, Inserm, Paris, France
| | - Ely Cheikh Mohamed Moctar
- Division of Otolaryngology, Department of Surgery, University of California, San Diego, 9500 Gilman Drive, Mail Code 0666, La Jolla, CA, 92093, USA
| | - Selma Mohamed Brahim
- Unité de Recherche sur les Biomarqueurs dans la Population Mauritanienne, UNA-FST, Nouakchott, Mauritania
- Centre National d'Oncologie (CNO), Unité de Recherche et d'Enseignement, Nouakchott, Mauritania
| | - Abdallahi Dedy
- Centre Hospitalier National de Nouakchott (CHN), Nouakchott, Mauritania
| | | | - Fatimetou Veten
- Unité de Recherche sur les Biomarqueurs dans la Population Mauritanienne, UNA-FST, Nouakchott, Mauritania
| | | | - Christine Petit
- Institut de l'AuditionInstitut Pasteur, Inserm, Paris, France
- Collège de France, Paris, France
| | - Ahmed Houmeida
- Unité de Recherche sur les Biomarqueurs dans la Population Mauritanienne, UNA-FST, Nouakchott, Mauritania.
| |
Collapse
|
9
|
Petit C, Escande A, Sarrade T, Vaugier L, Kirova Y, Tallet A. Radiation therapy in the thoracic region: Radio-induced cardiovascular disease, cardiac delineation and sparing, cardiac dose constraints, and cardiac implantable electronic devices. Cancer Radiother 2023; 27:588-598. [PMID: 37648559 DOI: 10.1016/j.canrad.2023.06.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 06/27/2023] [Indexed: 09/01/2023]
Abstract
Radiation therapy in the thoracic region may deliver incidental ionizing radiation to the surrounding healthy structures, including the heart. Radio-induced heart toxicity has long been a concern in breast cancer and Hodgkin's lymphoma and was deemed a long-term event. However, recent data highlight the need to limit the dose to the heart in less favorable thoracic cancers too, such as lung and esophageal cancers in which incidental irradiation led to increased mortality. This article will summarize available cardiac dose constraints in various clinical settings and the types of radio-induced cardiovascular diseases encountered as well as delineation of cardiac subheadings and management of cardiac devices. Although still not completely deciphered, heart dose constraints remain intensively investigated and the mean dose to the heart is no longer the only dosimetric parameter to consider since the left anterior descending artery as well as the left ventricle should also be part of dosimetry constraints.
Collapse
Affiliation(s)
- C Petit
- Radiation Oncology Department, institut Paoli-Calmettes, 232, boulevard Sainte-Marguerite, 13273 Marseille cedex 09, France
| | - A Escande
- Service de radiothérapie, centre Léonard-de-Vinci, Dechy, France; UMR 9189, laboratoire Cristal, université de Lille, Villeneuve-d'Ascq, France
| | - T Sarrade
- Department of Radiation Oncology, hôpital Tenon, Sorbonne université, 75020 Paris, France
| | - L Vaugier
- Department of Radiation Oncology, institut de cancérologie de l'Ouest, Saint-Herblain, France
| | - Y Kirova
- Department of Radiation Oncology, institut Curie, Paris, France
| | - A Tallet
- Radiation Oncology Department, institut Paoli-Calmettes, 232, boulevard Sainte-Marguerite, 13273 Marseille cedex 09, France; UMR 1068, CRCM Inserm, Marseille, France.
| |
Collapse
|
10
|
Jean P, Wong Jun Tai F, Singh-Estivalet A, Lelli A, Scandola C, Megharba S, Schmutz S, Roux S, Mechaussier S, Sudres M, Mouly E, Heritier AV, Bonnet C, Mallet A, Novault S, Libri V, Petit C, Michalski N. Single-cell transcriptomic profiling of the mouse cochlea: An atlas for targeted therapies. Proc Natl Acad Sci U S A 2023; 120:e2221744120. [PMID: 37339214 DOI: 10.1073/pnas.2221744120] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [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: 01/18/2023] [Accepted: 05/17/2023] [Indexed: 06/22/2023] Open
Abstract
Functional molecular characterization of the cochlea has mainly been driven by the deciphering of the genetic architecture of sensorineural deafness. As a result, the search for curative treatments, which are sorely lacking in the hearing field, has become a potentially achievable objective, particularly via cochlear gene and cell therapies. To this end, a complete inventory of cochlear cell types, with an in-depth characterization of their gene expression profiles right up to their final differentiation, is indispensable. We therefore generated a single-cell transcriptomic atlas of the mouse cochlea based on an analysis of more than 120,000 cells on postnatal day 8 (P8), during the prehearing period, P12, corresponding to hearing onset, and P20, when cochlear maturation is almost complete. By combining whole-cell and nuclear transcript analyses with extensive in situ RNA hybridization assays, we characterized the transcriptomic signatures covering nearly all cochlear cell types and developed cell type-specific markers. Three cell types were discovered; two of them contribute to the modiolus which houses the primary auditory neurons and blood vessels, and the third one consists in cells lining the scala vestibuli. The results also shed light on the molecular basis of the tonotopic gradient of the biophysical characteristics of the basilar membrane that critically underlies cochlear passive sound frequency analysis. Finally, overlooked expression of deafness genes in several cochlear cell types was also unveiled. This atlas paves the way for the deciphering of the gene regulatory networks controlling cochlear cell differentiation and maturation, essential for the development of effective targeted treatments.
Collapse
Affiliation(s)
- Philippe Jean
- Institut Pasteur, Université Paris Cité, INSERM, Institut de l'Audition, Plasticity of Central Auditory Circuits, F-75012 Paris, France
| | - Fabienne Wong Jun Tai
- Institut Pasteur, Université Paris Cité, INSERM, Institut de l'Audition, Auditory Therapies Innovation Laboratory, F-75012 Paris, France
| | - Amrit Singh-Estivalet
- Institut Pasteur, Université Paris Cité, INSERM, Institut de l'Audition, Auditory Therapies Innovation Laboratory, F-75012 Paris, France
| | - Andrea Lelli
- Institut Pasteur, Université Paris Cité, INSERM, Institut de l'Audition, Auditory Therapies Innovation Laboratory, F-75012 Paris, France
| | - Cyril Scandola
- Institut Pasteur, Université Paris Cité, Ultrastructural BioImaging, F-75015 Paris, France
| | - Sébastien Megharba
- Institut Pasteur, Université Paris Cité, Cytometry and Biomarkers, F-75015 Paris, France
| | - Sandrine Schmutz
- Institut Pasteur, Université Paris Cité, Cytometry and Biomarkers, F-75015 Paris, France
| | - Solène Roux
- Institut Pasteur, Université Paris Cité, INSERM, Institut de l'Audition, Auditory Therapies Innovation Laboratory, F-75012 Paris, France
| | - Sabrina Mechaussier
- Institut Pasteur, Université Paris Cité, INSERM, Institut de l'Audition, Plasticity of Central Auditory Circuits, F-75012 Paris, France
| | - Muriel Sudres
- Institut Pasteur, Université Paris Cité, INSERM, Institut de l'Audition, Auditory Therapies Innovation Laboratory, F-75012 Paris, France
| | - Enguerran Mouly
- Institut Pasteur, Université Paris Cité, INSERM, Institut de l'Audition, Auditory Therapies Innovation Laboratory, F-75012 Paris, France
| | - Anne-Valérie Heritier
- Institut Pasteur, Université Paris Cité, INSERM, Institut de l'Audition, Auditory Therapies Innovation Laboratory, F-75012 Paris, France
| | - Crystel Bonnet
- Institut Pasteur, Université Paris Cité, INSERM, Institut de l'Audition, Auditory Therapies Innovation Laboratory, F-75012 Paris, France
| | - Adeline Mallet
- Institut Pasteur, Université Paris Cité, Ultrastructural BioImaging, F-75015 Paris, France
| | - Sophie Novault
- Institut Pasteur, Université Paris Cité, Cytometry and Biomarkers, F-75015 Paris, France
| | - Valentina Libri
- Institut Pasteur, Université Paris Cité, Cytometry and Biomarkers, F-75015 Paris, France
| | - Christine Petit
- Institut Pasteur, Université Paris Cité, INSERM, Institut de l'Audition, Auditory Therapies Innovation Laboratory, F-75012 Paris, France
- Collège de France, F-75005 Paris, France
| | - Nicolas Michalski
- Institut Pasteur, Université Paris Cité, INSERM, Institut de l'Audition, Plasticity of Central Auditory Circuits, F-75012 Paris, France
| |
Collapse
|
11
|
Petit C, Donval L, Chandeze M, Chis C, Joste M, Panel P. Surgery of abdominal wall endometriosis associated with clear-cell carcinoma: Case report and review. J Gynecol Obstet Hum Reprod 2023; 52:102561. [PMID: 36841330 DOI: 10.1016/j.jogoh.2023.102561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 02/19/2023] [Accepted: 02/20/2023] [Indexed: 02/27/2023]
Abstract
Abdominal wall is a rare location for endometriosis, with a reported incidence of parietal endometriosis of approximately 0.03 to 0.4%. It most often occurs in the aftermath of a caesarean section and is associated with pelvic endometriosis in only 5 to 15% of cases. Rare cases of malignant transformation have been described, mainly in the form of clear-cell tumours. We report the case of a 52-year-old patient with a history of endometriosis who presented with a retractile parietal mass at the level of her caesarean scar. Histological analysis confirmed a clear-cell adenocarcinoma (CCC). Few cases of endometriosis - associated CCC are described in the literature. A review of the literature suggests radical surgical treatment combined with adjuvant radio-chemotherapy. However, the prognosis is poor. The aim of this case report is to suggest the diagnosis of malignant transformation in the presence of a rapidly evolving parietal mass in the context of endometriosis and a history of caesarean section.
Collapse
Affiliation(s)
- C Petit
- Service de Gynécologie-Obstétrique, Centre hospitalier de Versailles - Hôpital André Mignot, 177 Rue de Versailles, 78150 Le Chesnay-Rocquencourt, France
| | - L Donval
- Service de Gynécologie-Obstétrique, Centre hospitalier de Versailles - Hôpital André Mignot, 177 Rue de Versailles, 78150 Le Chesnay-Rocquencourt, France.
| | - M Chandeze
- Service de Gynécologie-Obstétrique, Centre hospitalier de Versailles - Hôpital André Mignot, 177 Rue de Versailles, 78150 Le Chesnay-Rocquencourt, France
| | - C Chis
- Service de Gynécologie-Obstétrique, Centre hospitalier de Versailles - Hôpital André Mignot, 177 Rue de Versailles, 78150 Le Chesnay-Rocquencourt, France
| | - M Joste
- Service de Gynécologie-Obstétrique, Centre hospitalier de Versailles - Hôpital André Mignot, 177 Rue de Versailles, 78150 Le Chesnay-Rocquencourt, France
| | - P Panel
- Service de Gynécologie-Obstétrique, Centre hospitalier de Versailles - Hôpital André Mignot, 177 Rue de Versailles, 78150 Le Chesnay-Rocquencourt, France
| |
Collapse
|
12
|
Alvarez FP, Bricout H, Marques C, Soininen A, Sainio T, Petit C, de Courville C, Chevalierf P. Reply to letter by Hadigal et al. regarding the cost-effectiveness of high dose quadrivalent vaccine in three European countries. J Med Econ 2023; 26:1167-1168. [PMID: 37455595 DOI: 10.1080/13696998.2023.2237378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 07/05/2023] [Indexed: 07/18/2023]
Affiliation(s)
| | | | | | | | | | | | | | - P Chevalierf
- IQVIA - Real World Evidence Solutions & HEOR Corporate Village, Zaventem, Belgium
| |
Collapse
|
13
|
Alvarez FP, Chevalier P, Borms M, Bricout H, Marques C, Soininen A, Sainio T, Petit C, de Courville C. Cost-effectiveness of influenza vaccination with a high dose quadrivalent vaccine of the elderly population in Belgium, Finland, and Portugal. J Med Econ 2023; 26:710-719. [PMID: 36960689 DOI: 10.1080/13696998.2023.2194193] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 03/17/2023] [Accepted: 03/20/2023] [Indexed: 03/25/2023]
Abstract
BACKGROUND Seasonal influenza may result in severe outcomes, resulting in a significant increase of hospitalizations during the winter. To improve the protection provided by the standard dose influenza quadrivalent vaccine (SDQIV), a high-dose vaccine (HDQIV) has been developed specifically for adults aged 60 and older who are at higher risk of life-threatening complications. OBJECTIVES The aim of this study was to determine the cost-effectiveness of HD QIV vs. SD-QIV in the recommended population of three European countries: Belgium, Finland and Portugal. METHODS A cost-utility analysis comparing HDQIV vs. SDQIV was conducted using a decision tree estimating health outcomes conditional on influenza: cases, general practitioner and emergency department visits, hospitalizations and deaths. To account for the full benefit of the vaccine, an additional outcome-hospitalizations attributable to influenza-was also evaluated. Demographic, epidemiological and economic inputs were based on the respective local data. HDQIV relative vaccine efficacy vs. SDQIV was obtained from a phase IV efficacy randomized clinical trial. The incremental cost-effectiveness ratios (ICER) were computed for each country, and a probabilistic sensitivity analysis (1,000 simulations per country) was performed to assess the robustness of the results. RESULTS In the base case analysis, HDQIV resulted in improved health outcomes (visits, hospitalizations, and deaths) compared to SDQIV. The ICERs computed were 1,397, 9,581, and 15,267 €/QALY, whereas the PSA yielded 100, 100, and 84% of simulations being cost-effective at their respective willingness-to-pay thresholds, for Belgium, Finland, and Portugal, respectively. CONCLUSION In three European countries with different healthcare systems, HD-QIV would contribute to a significant improvement in the prevention of influenza health outcomes while being cost-effective.
Collapse
|
14
|
Calvet C, Peineau T, Benamer N, Cornille M, Lelli A, Plion B, Lahlou G, Fanchette J, Nouaille S, Boutet de Monvel J, Estivalet A, Jean P, Michel V, Sachse M, Michalski N, Avan P, Petit C, Dulon D, Safieddine S. The SNARE protein SNAP-25 is required for normal exocytosis at auditory hair cell ribbon synapses. iScience 2022; 25:105628. [DOI: 10.1016/j.isci.2022.105628] [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] [Received: 03/10/2022] [Revised: 08/24/2022] [Accepted: 11/16/2022] [Indexed: 11/23/2022] Open
|
15
|
Sabado P, D'Anna L, Fong G, Petit C, Wood J. Examining Resident Power Building in a Place-Based Initiative. Health Promot Pract 2022; 23:955-962. [PMID: 34628971 DOI: 10.1177/15248399211045355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Rates of diseases and disabilities that are otherwise preventable are higher in low-income communities and communities of color. These disparities are attributed, in large part, to a power imbalance between residents and decision makers, and restoring resident power is necessary to improve health outcomes. A key strategy in many health promotion programs, resident power building is a process by which residents gain necessary skills to improve social conditions through their involvement in community change work. This study is part of a larger evaluation of Building Healthy Communities, a ground-breaking 10-year, $1 billion place-based initiative funded by The California Endowment designed to reverse the historical impact of racial and economic discrimination by advancing statewide policy, changing the narrative around health, and transforming underserved communities to achieve health equity. This article presents the resident power framework and identifies five domains that contributed to resident power building: continuity, culture, context, concrete action, and capacity. Continuity and culture mattered most to residents' ability to organize and to their ability to exercise their voice, respectively. While this study examined resident power building within the context of a large-scale place-based initiative, the domains that the authors identified are salient across health promotion programs that use power building as a key strategy to achieve program outcomes. The domains serve as opportunities to modify power-building strategies and allow program staff to allocate resources to specific activities to achieve program outcomes.
Collapse
Affiliation(s)
| | - Laura D'Anna
- California State University, Long Beach, Long Beach, CA, USA
| | - Gisele Fong
- The California Endowment, Los Angeles, CA, USA
| | | | - Jefferson Wood
- California State University, Long Beach, Long Beach, CA, USA
| |
Collapse
|
16
|
Gamblin M, Lachambre M, Gandemer L, Petit C. Impact de la température et du délai pré-analytique sur la stabilité des stupéfiants sur écouvillon salivaire de type FLOQSwabs®. Toxicologie Analytique et Clinique 2022. [DOI: 10.1016/j.toxac.2022.05.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
|
17
|
Postal O, Bakay W, Dupont T, Buck A, Élodie Daoud, Petit C, Michalski N, Gourévitch B. Characterizing subcutaneous cortical auditory evoked potentials in mice. Hear Res 2022; 422:108566. [PMID: 35863162 DOI: 10.1016/j.heares.2022.108566] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 06/17/2022] [Accepted: 06/30/2022] [Indexed: 11/18/2022]
Abstract
Auditory Brainstem Responses (ABRs) are a reliably robust measure of auditory thresholds in the mammalian hearing system and can be used to determine deficits in the auditory periphery. However, because these measures are limited to the lower stages of the auditory pathway, they are insensitive to changes or deficits that occur in the thalamic and cortical regions. Cortical Auditory Evoked Potentials (CAEPs), as longer latency responses, capture information from these regions. However they are less frequently used as a diagnostic tool, particularly in rodent models, due to their inherent variability and subsequent difficult interpretation. The purpose of this study was to develop a consistent measure of subcutaneous CAEPs to auditory stimuli in mice and to determine their origin. To this end, we investigated the effect on the CAEPs recorded in response to different stimuli (noise, click, and tone (16 kHz) bursts), stimulus presentation rates (2/s, 6/s, 10/s) and electrode placements. Recordings were examined for robust CAEP components to determine the optimal experimental paradigm. We argue that CAEPs can measure robust and replicable cortical responses. Furthermore, by deactivating the auditory cortex with lidocaine we demonstrated that the contralateral cortex is the main contributor to the CAEP. Thus CAEP measurements could prove to be of value diagnostically in future for deficits in higher auditory areas.
Collapse
Affiliation(s)
- Olivier Postal
- Institut de l'Audition, Institut Pasteur, INSERM, Université Paris Cité, F-75012 Paris, France; Sorbonne Université, Collège Doctoral, F-75005 Paris, France
| | - Warren Bakay
- Institut de l'Audition, Institut Pasteur, INSERM, Université Paris Cité, F-75012 Paris, France
| | - Typhaine Dupont
- Institut de l'Audition, Institut Pasteur, INSERM, Université Paris Cité, F-75012 Paris, France
| | - Alexa Buck
- Institut de l'Audition, Institut Pasteur, INSERM, Université Paris Cité, F-75012 Paris, France
| | - Élodie Daoud
- Institut de l'Audition, Institut Pasteur, INSERM, Université Paris Cité, F-75012 Paris, France
| | - Christine Petit
- Institut de l'Audition, Institut Pasteur, INSERM, Université Paris Cité, F-75012 Paris, France
| | - Nicolas Michalski
- Institut de l'Audition, Institut Pasteur, INSERM, Université Paris Cité, F-75012 Paris, France
| | - Boris Gourévitch
- Institut de l'Audition, Institut Pasteur, INSERM, Université Paris Cité, F-75012 Paris, France; CNRS, France.
| |
Collapse
|
18
|
Avan P, Petit C. [Otology and audiology, a rapidly changing care pathway inspired by scientific breakthroughs]. Med Sci (Paris) 2022; 38:621-622. [PMID: 36094223 DOI: 10.1051/medsci/2022110] [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: 01/05/2023] Open
Affiliation(s)
- Paul Avan
- Université Clermont Auvergne Centre de recherche et innovation en audiologie humaine (CERIAH), Institut de l'audition, 63 rue de Charenton, 75012 Paris, France
| | - Christine Petit
- Institut Pasteur, Université Paris Cité Inserm UA06, Institut de l'audition Collège de France, 63 rue de Charenton, 75012 Paris, France
| |
Collapse
|
19
|
Fabienne LS, Costecalde C, Dramé M, Deligny C, Numeric P, Blettery M, Petit C, De Bandt M, Suzon B. AB0359 TOCILIZUMAB IN AFRO-CARIBBEAN RHEUMATOID ARTHRITIS: THE MARTINICAN EXPERIENCE. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.2948] [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: 11/04/2022]
Abstract
BackgroundMortality and morbidity related to rheumatoid arthritis (RA) has remarkably improved over the last twenty years since using biologics DMARDs1. However, their effectiveness remains questionable in Afro-descendants (AD) due to their large under-representation in RA clinical trials2,3. Martinique is a French Caribbean region with a majority of AD population4, with free access to healthcare, including biotherapies, and a unique university hospital and rheumatology unit.ObjectivesTo evaluate effectiveness of Tocilizumab (TCZ), an interleukin-6 inhibitor, in an afro descendant RA population.MethodsRetrospective cohort of 171 patients who received at least 1 infusion of Tocilizumab (IV TCZ) at Martinique University Hospital Center between 2008 and 2019. Inclusion Criteria: Patients over 18 y/o meeting RA 2010 ACR/EULAR criteria, having received at least 4 courses of IV TCZ starting at 8mg/kg every 4 weeks, with available baseline clinical/biological data. Exclusion criteria: Patients having received subcutaneous TCZ (SC TCZ) prior to IV TCZ, not living in Martinique. Primary endpoint was proportion of patients in remission (R) and low disease activity (LDA) according to DAS28 CRP at 12, 24, 36 weeks. Secondary endpoint was proportion of patients achieving good (GR) and moderate (MR) EULAR response criteria 5 at 12, 24 and 36 weeks, and TCZ retention at 1 year defined as the proportion of patient receiving TCZ at 1 year follow up.ResultsOut of 171 patients receiving IV TCZ, we identified 138 RA and 80 patients met inclusion criteria: 90% were women, mean age was 56.8 (± 11.8) y/o, mean duration of RA was 11.6 (± 8.9) years, ACPA and Rheumatoid Factor were positive in 72.1% and 73% of cases, 69.6% of patients had erosions and 77.8% had received at least 1 biologic prior to IV TCZ. At baseline, 8 patients were in R, 8 had LDA but presented steroid dependency over 10 mg per day of prednisone and mean dose of prednisone was 6.9 (+/- 6.7) mg per day.At 12, 24, 36 weeks, R was achieved in 44.8%, 55.2% and 51.2% of patients and LDA in 37.3%, 17.2% and 20.9%, respectively (Figure 1). At 12, 24, 36 weeks, GR was achieved in 44.8 %, 60.3% and 48.8% of patients respectively, MR was achieved in 20.9%, 20.7% and 27.9% of patients respectively (Figure 1) and mean dose of prednisone per day was 5.1 (± 4.9) mg, 4.9 (± 5.6) mg and 3.3 (± 5.1) mg respectively. At 1 year, 78.8% of patients were still on TCZ. During follow up: 15 patients experienced 19 infectious events; 6 patients liver cytolysis; 12 patients neutropenia. No patient died.ConclusionThis is the first study evaluating efficacy and safety of TCZ in an AD RA cohort. TCZ is safe and effective in our AD population with comparable data observed in other ethnicities6,7.References[1]Lacaille, D., Avina-Zubieta, J. A., Sayre, E. C. & Abrahamowicz, M. Improvement in 5-year mortality in incident rheumatoid arthritis compared with the general population—closing the mortality gap. Ann. Rheum. Dis.76, 1057–1063 (2017).[2]Strait, A. et al. Demographic Characteristics of Participants in Rheumatoid Arthritis Randomized Clinical Trials: A Systematic Review. JAMA Netw. Open2, e1914745 (2019).[3]Dunbar-Jacob, J. et al. Factors associated with attrition of African Americans during the recruitment phase of a clinical trial examining adherence among individuals with rheumatoid arthritis: Attrition of African Americans. Arthritis Care Res.51, 422–428 (2004).[4]Levinson, D. Ethnic Groups Worldwide : a ready handbook. (1998).[5]Fransen, J. & van Riel, P. L. C. M. The Disease Activity Score and the EULAR Response Criteria. Rheum. Dis. Clin. N. Am.35, 745–757 (2009).[6]Gottenberg, J.-E. et al. Comparative effectiveness of rituximab, abatacept, and tocilizumab in adults with rheumatoid arthritis and inadequate response to TNF inhibitors: prospective cohort study. BMJ l67 (2019) doi:10.1136/bmj.l67.[7]Mori, S. et al. Retention of tocilizumab with and without methotrexate during maintenance therapy for rheumatoid arthritis: the ACTRA-RI cohort study. Rheumatology58, 1274–1284 (2019).Disclosure of InterestsNone declared
Collapse
|
20
|
Smirnov VM, Nassisi M, Mohand-Saïd S, Bonnet C, Aubois A, Devisme C, Dib T, Zeitz C, Loundon N, Marlin S, Petit C, Bodaghi B, Sahel JA, Audo I. Retinal Phenotype of Patients with CLRN1-Associated Usher 3A Syndrome in French Light4Deaf Cohort. Invest Ophthalmol Vis Sci 2022; 63:25. [PMID: 35481838 PMCID: PMC9055553 DOI: 10.1167/iovs.63.4.25] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Purpose Biallelic variants in CLRN1 are responsible for Usher syndrome 3A and non-syndromic rod–cone dystrophy (RCD). Retinal findings in Usher syndrome 3A have not been well defined. We report the detailed phenotypic description of RCD associated with CLRN1 variants in a prospective cohort. Methods Patients were clinically investigated at the National Reference Center for rare ocular diseases at the Quinze-Vingts Hospital, Paris, France. Best-corrected visual acuity (BCVA) tests, Goldmann perimetry, full-field electroretinography (ffERG), retinal photography, near-infrared reflectance, short-wavelength and near-infrared autofluorescence, and optical coherence tomography (OCT) were performed for all patients. Results Four patients from four unrelated families were recruited. Mean follow-up was 11 years for three patients, and only baseline data were available for one subject. Median BCVA at baseline was 0.2 logMAR (range, 0.3–0). ffERG responses were undetectable in all subjects. The III4e isopter of the Goldmann visual field was constricted to 10°. The retinal phenotype was consistent in all patients: small whitish granular atrophic areas were organized in a network pattern around the macula and in the midperiphery. OCT showed intraretinal microcysts in all patients. Upon follow-up, all patients experienced a progressive BCVA loss and further visual field constriction. Four distinct pathogenic variants were identified in our patients: two missense (c.144T>G, p.(Asn48Lys) and c.368C>A, p.(Ala123Asp)) and two frameshift variants (c.176del, p.(Gly59Valfs*13) and c.230dup, p.(Ala78Serfs*52)). Conclusions RCD in Usher 3A syndrome has some distinctive features. It is a severe photoreceptor dystrophy with whitish granular posterior pole appearance and cystic maculopathy.
Collapse
Affiliation(s)
- Vasily M Smirnov
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, Paris, France.,Université de Lille, Faculté de Médecine, Lille, France
| | - Marco Nassisi
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, Paris, France
| | - Saddek Mohand-Saïd
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, Paris, France.,CHNO des Quinze-Vingts, Centre de Référence Maladies Rares REFERET and DHU Sight Restore, INSERM-DGOS CIC1423, Paris, France
| | - Crystel Bonnet
- Unité de Génétique et Physiologie de l'Audition, Institut Pasteur, Paris, France.,Unité Mixte de Recherche en Santé 1120, INSERM, Paris, France.,Institut de l'Audition, Paris, France
| | - Anne Aubois
- CHNO des Quinze-Vingts, Centre de Référence Maladies Rares REFERET and DHU Sight Restore, INSERM-DGOS CIC1423, Paris, France
| | - Céline Devisme
- CHNO des Quinze-Vingts, Centre de Référence Maladies Rares REFERET and DHU Sight Restore, INSERM-DGOS CIC1423, Paris, France
| | - Thilissa Dib
- CHNO des Quinze-Vingts, Centre de Référence Maladies Rares REFERET and DHU Sight Restore, INSERM-DGOS CIC1423, Paris, France
| | - Christina Zeitz
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, Paris, France
| | - Natalie Loundon
- Otorhinolaryngologie Pédiatrique, APHP Hôpital Necker, Paris, France.,Centre de référence des Surdités Génétiques, Service de Génétique, APHP Hôpital Necker, Paris, France
| | - Sandrine Marlin
- Centre de référence des Surdités Génétiques, Service de Génétique, APHP Hôpital Necker, Paris, France
| | - Christine Petit
- Unité de Génétique et Physiologie de l'Audition, Institut Pasteur, Paris, France.,Unité Mixte de Recherche en Santé 1120, INSERM, Paris, France.,Institut de l'Audition, Paris, France.,Collège de France, Paris, France
| | | | - José-Alain Sahel
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, Paris, France.,CHNO des Quinze-Vingts, Centre de Référence Maladies Rares REFERET and DHU Sight Restore, INSERM-DGOS CIC1423, Paris, France.,Fondation Ophtalmologique Adolphe de Rothschild, Paris, France.,Department of Ophthalmology, University of Pittsburgh Medical School, Pittsburgh, Pennsylvania, United States.,Académie des Sciences-Institut de France, Paris, France
| | - Isabelle Audo
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, Paris, France.,CHNO des Quinze-Vingts, Centre de Référence Maladies Rares REFERET and DHU Sight Restore, INSERM-DGOS CIC1423, Paris, France.,Institute of Ophthalmology, University College of London, London, United Kingdom
| |
Collapse
|
21
|
AitRaise I, Amalou G, Bousfiha A, Charoute H, Rouba H, Abdelghaffar H, Bonnet C, Petit C, Barakat A. Genetic heterogeneity in GJB2, COL4A3, ATP6V1B1 and EDNRB variants detected among hearing impaired families in Morocco. Mol Biol Rep 2022; 49:3949-3954. [PMID: 35301649 DOI: 10.1007/s11033-022-07245-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 02/04/2022] [Accepted: 02/08/2022] [Indexed: 11/24/2022]
Abstract
BACKGROUND Deafness is the most prevalent human sensorineural defect. It may occur as a result of an external auditory canal involvement, or a deficiency in the sound conduction mechanism, or an impairment of the cochlea, the cochlear nerve or central auditory perception. The genetic causes are the most common, as approximately 70% of hearing disorders are of hereditary origin, divided into two groups, syndromic (associated with other symptoms) and no syndromic (isolated deafness). METHODS A whole exome sequencing was performed to identify the genetic cause of hearing loss in six Moroccan families and Sanger sequencing was used to validate mutations in these genes. THE RESULTS The results of four out of the six families revealed four genetic variants in the genes GJB2, COL4A3, ATP6V1B1 and EDNRB responsible for non-syndromic and syndromic hearing loss. Multiple Bioinformatics programs and molecular modelling predicted the pathogenic effect of these mutations. CONCLUSIONS We identified in Moroccan deaf patients four homozygous mutations. These results show the importance of whole exome sequencing to identify pathogenic mutations in heterogeneous disorders with multiple genes responsible.
Collapse
Affiliation(s)
- Imane AitRaise
- Genomics and Human Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco.,Laboratoire de Biochimie, Environnement et Agroalimentaire, Faculty of Science and Techniques of Mohammedia, Hassan II University of Casablanca, Casablanca, Morocco
| | - Ghita Amalou
- Genomics and Human Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Amale Bousfiha
- Genomics and Human Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco.,Laboratoire de physiopathologie et génétique moléculaire, Faculté des Sciences Ben M'sik, Université Hassan II, Casablanca, Morocco
| | - Hicham Charoute
- Research unit of epidemiology, biostatistics and bioinformatics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Hassan Rouba
- Genomics and Human Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Houria Abdelghaffar
- Laboratoire de Biochimie, Environnement et Agroalimentaire, Faculty of Science and Techniques of Mohammedia, Hassan II University of Casablanca, Casablanca, Morocco
| | - Crystel Bonnet
- Unité de Génétique et Physiologie de l'Audition, Institut Pasteur, 75015, Paris, France
| | - Christine Petit
- Unité de Génétique et Physiologie de l'Audition, Institut Pasteur, 75015, Paris, France.,Institut de l'Audition, 75012, Paris, France.,Collège de France, 75005, Paris, France
| | - Adbelhamid Barakat
- Genomics and Human Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco.
| |
Collapse
|
22
|
Butler EL, Reid B, Luckham PF, Guldin S, Livingston AG, Petit C. Interparticle Forces of a Native and Encapsulated Metal-Organic Framework and Their Effects on Colloidal Dispersion. ACS Appl Mater Interfaces 2021; 13:45898-45906. [PMID: 34533300 DOI: 10.1021/acsami.1c13991] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The colloidal properties of suspended metal-organic frameworks (MOFs) are critical for device fabrication and application. Herein, van der Waals attractive, electric double layer repulsive, and steric repulsive forces of a native and encapsulated MOF are quantified for the first time. The van der Waals attractive forces were investigated by conducting environmental ellipsometric porosimetry (EEP) and spectroscopic ellipsometry (SE) on submicron, optical-quality nanoparticle films. The repulsive forces were determined from colloid and material characterization measurements. These data were used to predict suspension properties via extended Derjaguin, Landau, Verwey, and Overbeek theory. The state of dispersion was quantified for comparison with theoretical predictions for nine solvents. The MOF encapsulated with a surface-selective modification showed superior suspension in hydrophobic solvents. These findings should expedite the formulation of MOF colloidal suspensions for future works.
Collapse
Affiliation(s)
- E L Butler
- Barrer Centre, Department of Chemical Engineering, Imperial College London, London SW7 2AZ, U.K
| | - B Reid
- Department of Chemical Engineering, University College London, Torrington Place, London WC1E 7JE, U.K
| | - P F Luckham
- Department of Chemical Engineering, Imperial College London, London SW7 2AZ, U.K
| | - S Guldin
- Department of Chemical Engineering, University College London, Torrington Place, London WC1E 7JE, U.K
| | - A G Livingston
- Barrer Centre, Department of Chemical Engineering, Imperial College London, London SW7 2AZ, U.K
| | - C Petit
- Barrer Centre, Department of Chemical Engineering, Imperial College London, London SW7 2AZ, U.K
| |
Collapse
|
23
|
Ros O, Baudet S, Zagar Y, Loulier K, Roche F, Couvet S, Aghaie A, Atkins M, Louail A, Petit C, Metin C, Mechulam Y, Nicol X. SpiCee: A Genetic Tool for Subcellular and Cell-Specific Calcium Manipulation. Cell Rep 2021; 32:107934. [PMID: 32697983 DOI: 10.1016/j.celrep.2020.107934] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 05/21/2020] [Accepted: 06/29/2020] [Indexed: 12/14/2022] Open
Abstract
Calcium is a second messenger crucial to a myriad of cellular processes ranging from regulation of metabolism and cell survival to vesicle release and motility. Current strategies to directly manipulate endogenous calcium signals lack cellular and subcellular specificity. We introduce SpiCee, a versatile and genetically encoded chelator combining low- and high-affinity sites for calcium. This scavenger enables altering endogenous calcium signaling and functions in single cells in vitro and in vivo with biochemically controlled subcellular resolution. SpiCee paves the way to investigate local calcium signaling in vivo and directly manipulate this second messenger for therapeutic use.
Collapse
Affiliation(s)
- Oriol Ros
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, 17 rue Moreau, 75012 Paris, France
| | - Sarah Baudet
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, 17 rue Moreau, 75012 Paris, France
| | - Yvrick Zagar
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, 17 rue Moreau, 75012 Paris, France
| | - Karine Loulier
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, 17 rue Moreau, 75012 Paris, France
| | - Fiona Roche
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, 17 rue Moreau, 75012 Paris, France
| | - Sandrine Couvet
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, 17 rue Moreau, 75012 Paris, France
| | - Alain Aghaie
- INSERM, Sorbonne Université, Institut Pasteur, UMR_S 1120, 75012 Paris, France
| | - Melody Atkins
- INSERM, UMR-S839, Sorbonne Université, Institut du Fer à Moulin, 75005 Paris, France
| | - Alice Louail
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, 17 rue Moreau, 75012 Paris, France
| | - Christine Petit
- INSERM, Sorbonne Université, Institut Pasteur, UMR_S 1120, 75012 Paris, France; Collège de France, 75005 Paris, France
| | - Christine Metin
- INSERM, UMR-S839, Sorbonne Université, Institut du Fer à Moulin, 75005 Paris, France
| | - Yves Mechulam
- Laboratoire de Biochimie, Ecole Polytechnique, CNRS UMR 7654, 91128 Palaiseau, France
| | - Xavier Nicol
- Sorbonne Université, INSERM, CNRS, Institut de la Vision, 17 rue Moreau, 75012 Paris, France.
| |
Collapse
|
24
|
Colcombet-Cazenave B, Druart K, Bonnet C, Petit C, Spérandio O, Guglielmini J, Wolff N. Phylogenetic analysis of Harmonin homology domains. BMC Bioinformatics 2021; 22:190. [PMID: 33853521 PMCID: PMC8048344 DOI: 10.1186/s12859-021-04116-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 03/24/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Harmonin Homogy Domains (HHD) are recently identified orphan domains of about 70 residues folded in a compact five alpha-helix bundle that proved to be versatile in terms of function, allowing for direct binding to a partner as well as regulating the affinity and specificity of adjacent domains for their own targets. Adding their small size and rather simple fold, HHDs appear as convenient modules to regulate protein-protein interactions in various biological contexts. Surprisingly, only nine HHDs have been detected in six proteins, mainly expressed in sensory neurons. RESULTS Here, we built a profile Hidden Markov Model to screen the entire UniProtKB for new HHD-containing proteins. Every hit was manually annotated, using a clustering approach, confirming that only a few proteins contain HHDs. We report the phylogenetic coverage of each protein and build a phylogenetic tree to trace the evolution of HHDs. We suggest that a HHD ancestor is shared with Paired Amphipathic Helices (PAH) domains, a four-helix bundle partially sharing fold and functional properties. We characterized amino-acid sequences of the various HHDs using pairwise BLASTP scoring coupled with community clustering and manually assessed sequence features among each individual family. These sequence features were analyzed using reported structures as well as homology models to highlight structural motifs underlying HHDs fold. We show that functional divergence is carried out by subtle differences in sequences that automatized approaches failed to detect. CONCLUSIONS We provide the first HHD databases, including sequences and conservation, phylogenic trees and a list of HHD variants found in the auditory system, which are available for the community. This case study highlights surprising phylogenetic properties found in orphan domains and will assist further studies of HHDs. We unveil the implication of HHDs in their various binding interfaces using conservation across families and a new protein-protein surface predictor. Finally, we discussed the functional consequences of three identified pathogenic HHD variants involved in Hoyeraal-Hreidarsson syndrome and of three newly reported pathogenic variants identified in patients suffering from Usher Syndrome.
Collapse
Affiliation(s)
- Baptiste Colcombet-Cazenave
- Unité Récepteurs-Canaux, Institut Pasteur, 75015, Paris, France.,Collège Doctoral, Sorbonne Université, 75005, Paris, France
| | - Karen Druart
- Unité de Bio-Informatique Structurale, Institut Pasteur, 75015, Paris, France
| | - Crystel Bonnet
- Unité de Génétique et Physiologie de l'Audition, Institut Pasteur, 75015, Paris, France.,INSERM, Institut de l'Audition, Institut Pasteur, 75012, Paris, France
| | - Christine Petit
- Unité de Génétique et Physiologie de l'Audition, Institut Pasteur, 75015, Paris, France.,INSERM, Institut de l'Audition, Institut Pasteur, 75012, Paris, France
| | - Olivier Spérandio
- Unité de Bio-Informatique Structurale, Institut Pasteur, 75015, Paris, France
| | - Julien Guglielmini
- Hub de Bioinformatique et Biostatistique - Département Biologie Computationnelle, USR 3756 CNRS, Institut Pasteur, Paris, France
| | - Nicolas Wolff
- Unité Récepteurs-Canaux, Institut Pasteur, 75015, Paris, France.
| |
Collapse
|
25
|
Varnet L, Léger AC, Boucher S, Bonnet C, Petit C, Lorenzi C. Contributions of Age-Related and Audibility-Related Deficits to Aided Consonant Identification in Presbycusis: A Causal-Inference Analysis. Front Aging Neurosci 2021; 13:640522. [PMID: 33732140 PMCID: PMC7956988 DOI: 10.3389/fnagi.2021.640522] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 12/11/2020] [Accepted: 02/08/2021] [Indexed: 12/05/2022] Open
Abstract
The decline of speech intelligibility in presbycusis can be regarded as resulting from the combined contribution of two main groups of factors: (1) audibility-related factors and (2) age-related factors. In particular, there is now an abundant scientific literature on the crucial role of suprathreshold auditory abilities and cognitive functions, which have been found to decline with age even in the absence of audiometric hearing loss. However, researchers investigating the direct effect of aging in presbycusis have to deal with the methodological issue that age and peripheral hearing loss covary to a large extent. In the present study, we analyzed a dataset of consonant-identification scores measured in quiet and in noise for a large cohort (n = 459, age = 42-92) of hearing-impaired (HI) and normal-hearing (NH) listeners. HI listeners were provided with a frequency-dependent amplification adjusted to their audiometric profile. Their scores in the two conditions were predicted from their pure-tone average (PTA) and age, as well as from their Extended Speech Intelligibility Index (ESII), a measure of the impact of audibility loss on speech intelligibility. We relied on a causal-inference approach combined with Bayesian modeling to disentangle the direct causal effects of age and audibility on intelligibility from the indirect effect of age on hearing loss. The analysis revealed that the direct effect of PTA on HI intelligibility scores was 5 times higher than the effect of age. This overwhelming effect of PTA was not due to a residual audibility loss despite amplification, as confirmed by a ESII-based model. More plausibly, the marginal role of age could be a consequence of the relatively little cognitively-demanding task used in this study. Furthermore, the amount of variance in intelligibility scores was smaller for NH than HI listeners, even after accounting for age and audibility, reflecting the presence of additional suprathreshold deficits in the latter group. Although the non-sense-syllable materials and the particular amplification settings used in this study potentially restrict the generalization of the findings, we think that these promising results call for a wider use of causal-inference analysis in audiology, e.g., as a way to disentangle the influence of the various cognitive factors and suprathreshold deficits associated to presbycusis.
Collapse
Affiliation(s)
- Léo Varnet
- Laboratoire des Systèmes Perceptifs, UMR CNRS 8248, Département d'Études Cognitives, École normale supérieure, Université Paris Sciences & Lettres, Paris, France
| | - Agnès C. Léger
- Manchester Centre for Audiology and Deafness, Division of Human Communication, Development & Hearing, School of Health Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, University of Manchester, Manchester, United Kingdom
| | - Sophie Boucher
- Complexité du Vivant, Sorbonne Universités, Université Pierre et Marie Curie, Université Paris VI, Paris, France
- Institut de l'Audition, Institut Pasteur, INSERM, Paris, France
- Centre Hospitalier Universitaire d'Angers, Angers, France
| | - Crystel Bonnet
- Complexité du Vivant, Sorbonne Universités, Université Pierre et Marie Curie, Université Paris VI, Paris, France
- Institut de l'Audition, Institut Pasteur, INSERM, Paris, France
| | - Christine Petit
- Institut de l'Audition, Institut Pasteur, INSERM, Paris, France
- Collège de France, Paris, France
| | - Christian Lorenzi
- Laboratoire des Systèmes Perceptifs, UMR CNRS 8248, Département d'Études Cognitives, École normale supérieure, Université Paris Sciences & Lettres, Paris, France
| |
Collapse
|
26
|
Amiel AR, Michel V, Carvalho JE, Shkreli M, Petit C, Röttinger E. [The sea anemone Nematostella vectensis, an emerging model for biomedical research: Mechano-sensitivity, extreme regeneration and longevity]. Med Sci (Paris) 2021; 37:167-177. [PMID: 33591260 DOI: 10.1051/medsci/2020282] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Nematostella has fascinating features such as whole-body regeneration, the absence of signs of aging and importantly, the absence of age-related diseases. Easy to culture and spawn, this little sea anemone in spite of its "simple" aspect, displays interesting morphological characteristics similar to vertebrates and an unexpected similarity in gene content/genome organization. Importantly, the scientific community working on Nematostella is developing a variety of functional genomics tools that enable scientists to use this anemone in the field of regenerative medicine, longevity and mecano-sensory diseases. As a complementary research model to vertebrates, this marine invertebrate is emerging and promising to dig deeper into those fields of research in an integrative manner (entire organism) and provides new opportunities for scientists to lift specific barriers that can be encountered with other commonly used animal models.
Collapse
Affiliation(s)
- Aldine R Amiel
- Université Côte d'Azur, CNRS, Inserm - Institut de Recherche sur le Cancer et le Vieillissement (IRCAN), 06107 Nice, France - Université Côte d'Azur - Institut fédératif de recherche - ressources marines, 06107 Nice, France
| | - Vincent Michel
- Institut de l'audition, Institut Pasteur, Inserm UMRS 1120, 75012 Paris, France
| | - João E Carvalho
- Université Côte d'Azur, CNRS, Inserm - Institut de Recherche sur le Cancer et le Vieillissement (IRCAN), 06107 Nice, France - Université Côte d'Azur - Institut fédératif de recherche - ressources marines, 06107 Nice, France
| | - Marina Shkreli
- Université Côte d'Azur, CNRS, Inserm - Institut de Recherche sur le Cancer et le Vieillissement (IRCAN), 06107 Nice, France
| | - Christine Petit
- Institut de l'audition, Institut Pasteur, Inserm UMRS 1120, 75012 Paris, France - Collège de France, 75005 Paris, France
| | - Eric Röttinger
- Université Côte d'Azur, CNRS, Inserm - Institut de Recherche sur le Cancer et le Vieillissement (IRCAN), 06107 Nice, France - Université Côte d'Azur - Institut fédératif de recherche - ressources marines, 06107 Nice, France
| |
Collapse
|
27
|
Elrharchi S, Riahi Z, Salime S, Charoute H, Elkhattabi L, Boulouiz R, Kabine M, Bonnet C, Petit C, Barakat A. Novel Mutation in AIFM1 Gene Associated with X-Linked Deafness in a Moroccan Family. Hum Hered 2021; 85:35-39. [PMID: 33486474 DOI: 10.1159/000512712] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 08/30/2020] [Accepted: 10/20/2020] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION Auditory neuropathy is a hearing disorder where outer hair cell function within the cochlea is normal, but inner hair cell and/or the auditory nerve function is disrupted. It is a heterogeneous disorder, which can have either congenital or acquired causes. METHODS We found a disease-segregating mutation in the X-linked AIFM1 gene through whole-exome sequencing, encoding the apoptosis-inducing factor mitochondrion-associated 1. RESULTS The impact of the c.1045A>G; p.(Ser349Gly) mutation on the AIFM1 protein was predicted using different bioinformatics tools. The pedigree analysis in the examined family was consistent with X-linked dominant inheritance. DISCUSSION/CONCLUSION To our knowledge, this is the first study that identifies a mutation in the AIFM1 gene in Moroccan patients suffering from X-linked auditory neuropathy.
Collapse
Affiliation(s)
- Soukaina Elrharchi
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco.,Laboratoire de Santé et Environnement, Faculté des sciences Ain Chock, Université Hassan II, Casablanca, Morocco
| | - Zied Riahi
- INSERM UMRS1120, Institut de la Vision, Paris, France.,UPMC-Sorbonnes Universités Paris-VI, Paris, France
| | - Sara Salime
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco.,Laboratoire de Santé et Environnement, Faculté des sciences Ain Chock, Université Hassan II, Casablanca, Morocco
| | - Hicham Charoute
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Lamiae Elkhattabi
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Redouane Boulouiz
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Mostafa Kabine
- Laboratoire de Santé et Environnement, Faculté des sciences Ain Chock, Université Hassan II, Casablanca, Morocco
| | - Crystel Bonnet
- INSERM UMRS1120, Institut de la Vision, Paris, France.,UPMC-Sorbonnes Universités Paris-VI, Paris, France
| | - Christine Petit
- INSERM UMRS1120, Institut de la Vision, Paris, France.,UPMC-Sorbonnes Universités Paris-VI, Paris, France.,Unité de Génétique et Physiologie de l'Audition, Institut Pasteur, Paris, France.,Collège de France, Paris, France
| | - Abdelhamid Barakat
- Laboratory of Genomics and Human Genetics, Institut Pasteur du Maroc, Casablanca, Morocco,
| |
Collapse
|
28
|
Amalou G, Bonnet C, Riahi Z, Bouzidi A, Elrharchi S, Bousfiha A, Charif M, Kandil M, Lenaers G, Petit C, Barakat A. A homozygous MPZL2 deletion is associated with non syndromic hearing loss in a moroccan family. Int J Pediatr Otorhinolaryngol 2021; 140:110481. [PMID: 33234333 DOI: 10.1016/j.ijporl.2020.110481] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Revised: 10/29/2020] [Accepted: 10/29/2020] [Indexed: 12/01/2022]
Abstract
Adhesion glycoproteins are implicated in the pathophysiology of hearing loss, the most frequent inherited sensory disorder, affecting 1 in 1000 new-borns. Exome sequencing of a consanguineous Moroccan patient with mild hearing loss identified for the first time in a North African family a single homozygous mutation c.72delA in MPZL2 gene, encoding the Myelin Protein Zero-Like 2, reported as causing deafness in two other populations. Variable tandem repeat genotyping of this family revealed that the c.72delA MPZL2 allele shared a common haplotype with Turkish and Dutch families. These results confirm the pathogenicity of this MPZL2 mutation in recessive mild to moderate non-syndromic deafness.
Collapse
Affiliation(s)
- Ghita Amalou
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco; MitoLab Team, Institut MitoVasc, UMR CNRS 6015, INSERM U1083, Université d'Angers, Angers, France; Team of Anthropogenetics and Biotechnologies, Faculty of Sciences, Chouaib Doukkali University, Eljadida, Morocco
| | - Crystel Bonnet
- Genetics and Physiology of Hearing Laboratory, Institut Pasteur, 75015, Paris, France
| | - Zied Riahi
- Complexité Du Vivant, Sorbonne Universités, 75005, Paris, France
| | - Aymane Bouzidi
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco; MitoLab Team, Institut MitoVasc, UMR CNRS 6015, INSERM U1083, Université d'Angers, Angers, France; Team of Anthropogenetics and Biotechnologies, Faculty of Sciences, Chouaib Doukkali University, Eljadida, Morocco
| | - Soukaina Elrharchi
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Amale Bousfiha
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco; Laboratoire de Physiopathologie et Génétique Moléculaire, Faculté des Sciences Ben M'sik, Université Hassan II, Casablanca, Morocco
| | - Majida Charif
- MitoLab Team, Institut MitoVasc, UMR CNRS 6015, INSERM U1083, Université d'Angers, Angers, France; Genetics, and Immuno-cell Therapy Team, Mohammed First University, Oujda, Morocco
| | - Mostafa Kandil
- Team of Anthropogenetics and Biotechnologies, Faculty of Sciences, Chouaib Doukkali University, Eljadida, Morocco
| | - Guy Lenaers
- MitoLab Team, Institut MitoVasc, UMR CNRS 6015, INSERM U1083, Université d'Angers, Angers, France
| | - Christine Petit
- Genetics and Physiology of Hearing Laboratory, Institut Pasteur, 75015, Paris, France; Institut de L'Audition, 75012, Paris, France; Collège de France, 75005, Paris, France
| | - Abdelhamid Barakat
- Human Molecular Genetics Laboratory, Institut Pasteur du Maroc, Casablanca, Morocco.
| |
Collapse
|
29
|
Issoufaly I, Petit C, Guihard S, Eugene R, Jung L, Clavier J, Servagi Vernat S, Bellefquih S, Rivera S. Normo Versus Hypofractionated Whole Breast Radiation-Related Acute Toxicities: Evolution over Time in Systematic Multicentric Real Life Data. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.1102] [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: 11/17/2022]
|
30
|
Grégoire V, Blanchard P, Allajbej A, Petit C, Milhade N, Nguyen F, Bakkar S, Boulle G, Romano E, Zrafi W, Lombard A, Ullmann E, Paragios N, Deutsch E, Robert C. OC-0681: Deep learning auto contouring of OAR for HN radiotherapy: a blinded evaluation by clinical experts. Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)00703-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
31
|
Blanchard P, Gregoire V, Petit C, Milhade N, Allajbej A, Nguyen T, Bakkar S, Boulle G, Lombard A, Beldjoudi G, Munoz A, Ullman E, Paragios N, Deutsch E, Robert C. A Blinded Prospective Evaluation Of Clinical Applicability Of Deep Learning-Based Auto Contouring Of OAR For Head and Neck Radiotherapy. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.239] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
32
|
Guihard S, Petit C, Clavier J, Jung L, Vernat SS, Bellefquih S, Ruffier A, Brusadin G, Remi E, Rivera S. PH-0598: Normo versus hypofractionated whole breast irradiation: Are real life data what we expect? Radiother Oncol 2020. [DOI: 10.1016/s0167-8140(21)00620-4] [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: 11/24/2022]
|
33
|
Bronsart E, Petit C, Gouy S, Bockel S, Espenel S, Kumar T, Fumagalli I, Maulard A, Ayachy RE, Genestie C, Leary A, Pautier P, Morice P, Haie-Meder C, Chargari C. Evaluation of adjuvant vaginal vault brachytherapy in early stage cervical cancer patients. Cancer Radiother 2020; 24:860-865. [PMID: 33129715 DOI: 10.1016/j.canrad.2020.10.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 10/12/2020] [Indexed: 11/27/2022]
Abstract
PURPOSE Adjuvant external beam radiotherapy (EBRT) was shown to decrease pelvic relapses in patients with an early stage cervical cancer and intermediate-risk histopathological prognostic factors, at the cost of increased bowel morbidity. We examined the feasibility and results of adjuvant brachytherapy alone as an alternative to EBRT in this situation. PATIENTS AND METHODS Medical records of consecutive patients receiving adjuvant brachytherapy between 1991 and 2018 for an early stage cervical cancer were examined. Patients were included if they presented a pT1a2N0 or pT1b1N0 disease following radical colpohysterectomy. Adjuvant vaginal wall brachytherapy (without EBRT) was indicated because of a tumor size≥2cm and/or presence of lymphovascular space invasion (LVSI). Patients received 60Gy to 5mm of the vaginal wall, through low-dose or pulse-dose rate technique. Patients' outcome was examined for disease control, toxicities and prognostic factors. RESULTS A total of 40 patients were included. Eight patients (20%) had LVSI, 26 patients (65%) had a tumor size≥2cm. With median follow-up time of 42.0 months, 90% of patients were in complete remission and four patients (10%) experienced tumor relapse, all in the peritoneal cavity, and associated with synchronous pelvic lymph node failure in 2/4 patients. No vaginal or isolated pelvic nodal failure was reported. At 5 year, overall survival was 83.6% (CI95%: 67.8-100%) and disease-free survival was 85.1% (CI95%: 72.6-99.9%). In univariate analysis, probability of relapse correlated with tumor size≥3cm (P=0.004). No acute or late toxicity grade more than 2 was reported. CONCLUSION Brachytherapy alone was a well-tolerated adjuvant treatment for selected patients with intermediate risk factors. The risk of relapse in patients with tumor size≥3cm was however high, suggesting that EBRT is more appropriate in this situation.
Collapse
Affiliation(s)
- E Bronsart
- Department of Radiation Oncology, Gustave-Roussy, Paris-Saclay University, Villejuif, France
| | - C Petit
- Department of Radiation Oncology, Gustave-Roussy, Paris-Saclay University, Villejuif, France
| | - S Gouy
- Department of Gynecologic Surgery, Gustave-Roussy, Villejuif, France
| | - S Bockel
- Department of Radiation Oncology, Gustave-Roussy, Paris-Saclay University, Villejuif, France
| | - S Espenel
- Department of Radiation Oncology, Gustave-Roussy, Paris-Saclay University, Villejuif, France
| | - T Kumar
- Department of Radiation Oncology, Gustave-Roussy, Paris-Saclay University, Villejuif, France
| | - I Fumagalli
- Department of Radiation Oncology, Gustave-Roussy, Paris-Saclay University, Villejuif, France
| | - A Maulard
- Department of Gynecologic Surgery, Gustave-Roussy, Villejuif, France
| | - R El Ayachy
- Department of Radiation Oncology, Gustave-Roussy, Paris-Saclay University, Villejuif, France
| | - C Genestie
- Department of Pathology, Gustave-Roussy, Villejuif, France
| | - A Leary
- Department of Medical Oncology, Gustave-Roussy, Villejuif, France
| | - P Pautier
- Department of Medical Oncology, Gustave-Roussy, Villejuif, France
| | - P Morice
- Department of Gynecologic Surgery, Gustave-Roussy, Villejuif, France
| | - C Haie-Meder
- Department of Radiation Oncology, Gustave-Roussy, Paris-Saclay University, Villejuif, France; GIE Charlebourg, groupe Amethyst, 65, avenue Foch, 92250 La-Garenne-Colombes, France
| | - C Chargari
- Department of Radiation Oncology, Gustave-Roussy, Paris-Saclay University, Villejuif, France; French Military Health Academy, Paris, France; Institut de recherche biomédicale des armées, Brétigny-sur-Orge, France.
| |
Collapse
|
34
|
Postal O, Dupont T, Bakay W, Dominique N, Petit C, Michalski N, Gourévitch B. Spontaneous Mouse Behavior in Presence of Dissonance and Acoustic Roughness. Front Behav Neurosci 2020; 14:588834. [PMID: 33132864 PMCID: PMC7578920 DOI: 10.3389/fnbeh.2020.588834] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 09/08/2020] [Indexed: 11/13/2022] Open
Abstract
According to a novel hypothesis (Arnal et al., 2015, Current Biology 25:2051-2056), auditory roughness, or temporal envelope modulations between 30 and 150 Hz, are present in both natural and artificial human alarm signals, which boosts the detection of these alarms in various tasks. These results also shed new light on the unpleasantness of dissonant sounds to humans, which builds upon the high level of roughness present in such sounds. However, it is not clear whether this hypothesis also applies to other species, such as rodents. In particular, whether consonant/dissonant chords, and particularly whether auditory roughness, can trigger unpleasant sensations in mice remains unknown. Using an autonomous behavioral system, which allows the monitoring of mouse behavior over a period of weeks, we observed that C57Bl6J mice did not show any preference for consonant chords. In addition, we found that mice showed a preference for rough sounds over sounds having amplitude modulations in their temporal envelope outside the "rough" range. These results suggest that some emotional features carried by the acoustic temporal envelope are likely to be species-specific.
Collapse
Affiliation(s)
- Olivier Postal
- Institut de l’Audition, Institut Pasteur, INSERM, Paris, France
- Sorbonne Université, Collège Doctoral, Paris, France
| | - Typhaine Dupont
- Institut de l’Audition, Institut Pasteur, INSERM, Paris, France
| | - Warren Bakay
- Institut de l’Audition, Institut Pasteur, INSERM, Paris, France
| | - Noémi Dominique
- Institut de l’Audition, Institut Pasteur, INSERM, Paris, France
| | - Christine Petit
- Institut de l’Audition, Institut Pasteur, INSERM, Paris, France
- Syndrome de Usher et Autres Atteintes Rétino-Cochléaires, Institut de la Vision, Paris, France
- Collège de France, Paris, France
| | | | - Boris Gourévitch
- Institut de l’Audition, Institut Pasteur, INSERM, Paris, France
- CNRS, Paris, France
| |
Collapse
|
35
|
Issoufaly I, Rivera S, Guihard S, Clavier J, Rémi E, Vigneron C, Menoux I, Mazzara C, Servagi Vernat S, Bellefquih S, Petit C. Comparaison intercentre de la toxicité aiguë de 2052 patientes après radiothérapie mammaire normo- ou hypofractionnée à partir d’une fiche standardisée d’évaluation. Cancer Radiother 2020. [DOI: 10.1016/j.canrad.2020.08.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
36
|
Ung M, Rivera S, Rouyar A, Limkin E, Petit C, Sarrade T, Carre A, Auzac G, Lombard A, Ullmann E, Bonnet N, Lamrani-Ghaouti A, Paragios N, Martineau-Huynh C, Deutsch E, Robert C. Dosimetric impact of an AI-based delineation software satisfying international guidelines in breast cancer radiotherapy. Eur J Cancer 2020. [DOI: 10.1016/s0959-8049(20)30840-6] [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: 10/23/2022]
|
37
|
Clavier J, Jung L, Eugène R, Mazzara C, Servagi S, Rivera S, Issoufaly I, Bellefqih S, Hannoun-Lévi JM, Petit C, Feuillade J, Fontbonne JM, Bonnet N, Jou A, Piot M, Liem X, Thariat J, Guihard S. Capture, restitution et exploitation multicentrique des données de vie réelle en radiothérapie. Cancer Radiother 2020. [DOI: 10.1016/j.canrad.2020.08.013] [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]
|
38
|
Farooq U, Stafford J, Petit C, Matar OK. Numerical simulations of a falling film on the inner surface of a rotating cylinder. Phys Rev E 2020; 102:043106. [PMID: 33212700 DOI: 10.1103/physreve.102.043106] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 10/07/2020] [Indexed: 06/11/2023]
Abstract
A flow in which a thin film falls due to gravity on the inner surface of a vertical, rotating cylinder is investigated. This is performed using two-dimensional (2D) and 3D direct numerical simulations, with a volume-of-fluid approach to treat the interface. The problem is parameterized by the Reynolds, Froude, Weber, and Ekman numbers. The variation of the Ekman number (Ek), defined to be proportional to the rotational speed of the cylinder, has a strong effect on the flow characteristics. Simulations are conducted over a wide range of Ek values (0≤Ek≤484) in order to provide detailed insight into how this parameter influences the flow. Our results indicate that increasing Ek, which leads to a rise in the magnitude of centrifugal forces, produces a stabilizing effect, suppressing wave formation. Key flow features, such as the transition from a 2D to a more complex 3D wave regime, are influenced significantly by this stabilization and are investigated in detail. Furthermore, the imposed rotation results in distinct flow characteristics such as the development of angled waves, which arise due to the combination of gravitationally and centrifugally driven motion in the axial and azimuthal directions, respectively. We also use a weighted residuals integral boundary layer method to determine a boundary in the space of Reynolds and Ekman numbers that represents a threshold beyond which waves have recirculation regions.
Collapse
Affiliation(s)
- U Farooq
- Department of Chemical Engineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - J Stafford
- Department of Chemical Engineering, Imperial College London, London SW7 2AZ, United Kingdom
- School of Engineering, University of Birmingham, B15 2TT, United Kingdom
| | - C Petit
- Department of Chemical Engineering, Imperial College London, London SW7 2AZ, United Kingdom
| | - O K Matar
- Department of Chemical Engineering, Imperial College London, London SW7 2AZ, United Kingdom
| |
Collapse
|
39
|
Sodreau A, Vivien A, Moisset A, Salzemann C, Petit C, Petit M. Simpler and Cleaner Synthesis of Variously Capped Cobalt Nanocrystals Applied in the Semihydrogenation of Alkynes. Inorg Chem 2020; 59:13972-13978. [DOI: 10.1021/acs.inorgchem.0c01641] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- A. Sodreau
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, UMR 8232, 4 place Jussieu, 75005 Paris, France
| | - A. Vivien
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, UMR 8232, 4 place Jussieu, 75005 Paris, France
| | - A. Moisset
- Sorbonne Université, MONARIS, UMR 8233, 4 place Jussieu, 75005 Paris, France
| | - C. Salzemann
- Sorbonne Université, MONARIS, UMR 8233, 4 place Jussieu, 75005 Paris, France
| | - C. Petit
- Sorbonne Université, MONARIS, UMR 8233, 4 place Jussieu, 75005 Paris, France
| | - M. Petit
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, UMR 8232, 4 place Jussieu, 75005 Paris, France
| |
Collapse
|
40
|
Song JS, Bahloul A, Petit C, Kim SJ, Moon IJ, Lee J, Ki CS. A Novel Heterozygous Missense Variant (c.667G>T;p.Gly223Cys) in USH1C That Interferes With Cadherin-Related 23 and Harmonin Interaction Causes Autosomal Dominant Nonsyndromic Hearing Loss. Ann Lab Med 2020; 40:224-231. [PMID: 31858762 PMCID: PMC6933062 DOI: 10.3343/alm.2020.40.3.224] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 08/23/2019] [Accepted: 11/26/2019] [Indexed: 01/28/2023] Open
Abstract
Background Pathogenic variants of USH1C, encoding a PDZ-domain-containing protein called harmonin, have been known to cause autosomal recessive syndromic or nonsyndromic hearing loss (NSHL). We identified a causative gene in a large Korean family with NSHL showing a typical pattern of autosomal dominant (AD) inheritance. Methods Exome sequencing was performed for five affected and three unaffected individuals in this family. Following identification of a candidate gene variant, segregation analysis and functional studies, including circular dichroism and biolayer interferometry experiments, were performed. Results A novel USH1C heterozygous missense variant (c.667G>T;p.Gly223Cys) was shown to segregate with the NSHL phenotype in this family. This variant affects an amino acid residue located in the highly conserved carboxylate-binding loop of the harmonin PDZ2 domain and is predicted to disturb the interaction with cadherin-related 23 (cdh23). The affinity of the variant PDZ2 domain for a biotinylated synthetic peptide containing the PDZ-binding motif of cdh23 was approximately 16-fold lower than that of the wild-type PDZ2 domain and that this inaccessibility of the binding site was caused by a conformational change in the variant PDZ2 domain. Conclusions A heterozygous variant of USH1C that interferes with the interaction between cdh23 and harmonin causes novel AD-NSHL.
Collapse
Affiliation(s)
| | - Amel Bahloul
- Unité de génétique et physiologie de l'audition, Institut Pasteur, Paris, France.,UMRS 1120, Inserm, Paris, France.,Sorbonne Universités, Paris, France.,Department of Otolaryngology - Head and Neck Surgery, Stanford University, Stanford, California, USA
| | - Christine Petit
- Unité de génétique et physiologie de l'audition, Institut Pasteur, Paris, France.,UMRS 1120, Inserm, Paris, France.,Sorbonne Universités, Paris, France.,College de France and Institut Pasteur, Paris, France
| | - Sang Jin Kim
- Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Il Joon Moon
- Department of Otorhinolaryngology-Head and Neck Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jinhyuk Lee
- Korean Bioinformation Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea.,Department of Bioinformatics, University of Sciences and Technology, Daejeon, Korea
| | | |
Collapse
|
41
|
Petit C, L'Ollivier C, Mattei JC, Menard A. Muscular hydatidosis. New Microbes New Infect 2020; 34:100637. [PMID: 31993206 PMCID: PMC6974779 DOI: 10.1016/j.nmni.2019.100637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 12/05/2019] [Accepted: 12/10/2019] [Indexed: 11/17/2022] Open
|
42
|
Dahmani M, Talbi S, Ammar-Khodja F, Ouhab S, Boudjenah F, Djebbar M, Bonnet C, Petit C. ATP6V1B1 recurrent mutations in Algerian deaf patients associated with renal tubular acidosis. Int J Pediatr Otorhinolaryngol 2020; 129:109772. [PMID: 31733597 DOI: 10.1016/j.ijporl.2019.109772] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 11/04/2019] [Accepted: 11/04/2019] [Indexed: 10/25/2022]
Abstract
Hereditary distal renal tubular acidosis (dRTA) is a rare disorder characterized by metabolic acidosis due to impaired renal acid excretion. To date, three genes (ATP6V1B1, ATP6V0A4 and SLC4A1) have been reported to be responsible for this genetic disorder. Notably, mutations of ATP6V1B1 gene, which encode B1-subunit of H + -ATPase pump cause distal renal tubular acidosis often, associated with sensorineural hearing loss (SNHL). Furthermore, enlarged vestibular aqueduct (EVA) was also described in some patients with ATP6V1B1 mutations. Four Algerian unrelated patients presented with dRTA and SNHL were recruited. The ATP6V1B1 gene was preferentially analyzed in all these patients by Sanger sequencing. We identified two previously reported variants in ATP6V1B1 gene: a frameshift mutation (c.1155dupC: p.(Ile386Hisfs*56) in exon 12 and a splicing mutation in intron 2 (c.175-1G > C: p?). Both mutations were homozygous in affected members. Interestingly, one patient with p.(Ile386Hisfs*56) mutation presented profound SNHL and bilateral enlarged vestibular aqueduct (EVA). Our study indicates the importance contribution of ATP6V1B1 gene mutations to the pathogenesis of the dRTA in the Algerian population and will contribute to introducing principles to predict the characteristics of the dRTA in patients. Thus, screening for this gene could allow rapid patient management and provide adequate genetic counseling.
Collapse
Affiliation(s)
- Malika Dahmani
- Equipe de Génétique, Laboratoire de Biologie Cellulaire et Moléculaire, Faculté des Sciences Biologiques, Université des Siences et de La Technologie Houari Boumédiène (USTHB), Alger, Algeria.
| | - Sonia Talbi
- Equipe de Génétique, Laboratoire de Biologie Cellulaire et Moléculaire, Faculté des Sciences Biologiques, Université des Siences et de La Technologie Houari Boumédiène (USTHB), Alger, Algeria
| | - Fatima Ammar-Khodja
- Equipe de Génétique, Laboratoire de Biologie Cellulaire et Moléculaire, Faculté des Sciences Biologiques, Université des Siences et de La Technologie Houari Boumédiène (USTHB), Alger, Algeria
| | - Sofiane Ouhab
- Service D'Otorhinolaryngologie (ORL), Établissement Public Hospitalier Bachir Mentouri, Alger, Algeria
| | - Farid Boudjenah
- Service D'Otorhinolaryngologie (ORL), Centre Hospitalier Universitaire (CHU) de Tizi Ouzou, Algeria
| | - Merieme Djebbar
- Ecole des Sourds-muets (Villa La Chimère), Telemly, Alger, Algeria
| | - Crystel Bonnet
- Institut de La Vision, UMRS 1120 INSERM/UPMC. Paris 6, Paris, France
| | - Christine Petit
- Institut de La Vision, UMRS 1120 INSERM/UPMC. Paris 6, Paris, France; Institut Pasteur, Unité de Génétique et Physiologie de L'Audition, Paris, France; Collège de France, Paris, France
| |
Collapse
|
43
|
Bousfiha A, Riahi Z, Elkhattabi L, Bakhchane A, Charoute H, Snoussi K, Bonnet C, Petit C, Barakat A. Further Evidence for the Implication of the MET Gene in Non-Syndromic Autosomal Recessive Deafness. Hum Hered 2019; 84:109-116. [PMID: 31801140 DOI: 10.1159/000503450] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 09/18/2019] [Indexed: 11/19/2022] Open
Abstract
Mutations in the mesenchymal epithelial transition factor (MET) gene are frequently associated with multiple human cancers but can also lead to human non-syndromic autosomal recessive deafness (DFNB97). In the present study, we identified a novel homozygous missense mutation in the METgene causing a non-syndromic hearing impairment DFNB97 form. Whole-exome sequencing was performed to determine the genetic causes of hearing loss in a Moroccan consanguineous family with an affected daughter. The structural analysis of native and mutant in the SEMA domain of the MET receptor was investigated using a molecular dynamics simulation (MDS) approach. We identified a novel pathogenic homozygous c.948A>G (p.Ile316Met) mutation in the MET gene in one deaf Moroccan young girl carrying a total bilateral non-syndromic hearing impairment. The results of the MDS approach show that an Ile316Met mutation in the SEMA domain leads to protein flexibility loss. This may produce a major impact on the structural conformation of the MET receptor, which also affects the function and binding site of the receptor. This is the first time that a mutation in the MET gene is described in a Moroccan family. Moreover, this study reports the second family in the world associating deafness and mutation in the MET gene.
Collapse
Affiliation(s)
- Amale Bousfiha
- Laboratoire de Génomique et Génétique Humaine, Institut Pasteur du Maroc, Casablanca, Morocco.,Laboratoire de Physiopathologie et Génétique Moléculaire, Faculté des Sciences Ben M'Sik, Université Hassan II, Casablanca, Morocco
| | - Zied Riahi
- INSERM UMRS1120, Institut de la Vision, Paris, France.,UPMC-Sorbonnes Universités Paris VI, Paris, France
| | - Lamiae Elkhattabi
- Laboratoire de Génomique et Génétique Humaine, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Amina Bakhchane
- Laboratoire de Génomique et Génétique Humaine, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Hicham Charoute
- Laboratoire de Génomique et Génétique Humaine, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Khalid Snoussi
- Laboratoire de Génomique et Génétique Humaine, Institut Pasteur du Maroc, Casablanca, Morocco
| | - Crystel Bonnet
- INSERM UMRS1120, Institut de la Vision, Paris, France.,UPMC-Sorbonnes Universités Paris VI, Paris, France
| | - Christine Petit
- INSERM UMRS1120, Institut de la Vision, Paris, France.,UPMC-Sorbonnes Universités Paris VI, Paris, France.,Unité de Génétique et Physiologie de l'Audition, Institut Pasteur, Paris, France.,Collège de France, Paris, France
| | - Abdelhamid Barakat
- Laboratoire de Génomique et Génétique Humaine, Institut Pasteur du Maroc, Casablanca, Morocco,
| |
Collapse
|
44
|
Joseph C, Petit C, Schmit JL, Drancourt M, Pluquet E, Lanoix JP. Community-acquired granulomatous mastitis superinfected with Mycobacterium bolletii. Med Mal Infect 2019; 50:291-292. [PMID: 31806269 DOI: 10.1016/j.medmal.2019.11.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 11/04/2019] [Indexed: 11/25/2022]
Affiliation(s)
- C Joseph
- Infectious Diseases Department, University Hospital, Amiens, France; AGIR: Microbiology Research Unit, EA4294, Jules Verne University of Picardie, Amiens, France.
| | - C Petit
- Infectious Diseases Department, University Hospital, Amiens, France
| | - J L Schmit
- Infectious Diseases Department, University Hospital, Amiens, France; AGIR: Microbiology Research Unit, EA4294, Jules Verne University of Picardie, Amiens, France
| | - M Drancourt
- Microbiology Laboratory, Hygiene, Hospital Epidemiology, La Timone Hospital, University Hospital, Marseille, France
| | - E Pluquet
- Bacteriology Laboratory, University Hospital, Amiens, France; AGIR: Microbiology Research Unit, EA4294, Jules Verne University of Picardie, Amiens, France
| | - J P Lanoix
- Infectious Diseases Department, University Hospital, Amiens, France; AGIR: Microbiology Research Unit, EA4294, Jules Verne University of Picardie, Amiens, France
| |
Collapse
|
45
|
Abstract
Up to five distinct cell-surface specializations interconnect the stereocilia and the kinocilium of the mature hair bundle in some species: kinocilial links, tip links, top connectors, shaft connectors, and ankle links. In developing hair bundles, transient lateral links are prominent. Mutations in genes encoding proteins associated with these links cause Usher deafness/blindness syndrome or nonsyndromic (isolated) forms of human hereditary deafness, and mice with constitutive or conditional alleles of these genes have provided considerable insight into the molecular composition and function of the different links. We describe the structure of these links and review evidence showing CDH23 and PCDH15 are components of the tip, kinocilial, and transient-lateral links, that stereocilin (STRC) and protein tyrosine phosphatase (PTPRQ) are associated with top and shaft connectors, respectively, and that USH2A and ADGRV1 are associated with the ankle links. Whereas tip links are required for mechanoelectrical transduction, all link proteins play key roles in the normal development and/or the maintenance of hair bundle structure and function. Recent crystallographic and single-particle analyses of PCDH15 and CDH23 provide insight as to how the structure of tip link may contribute to the elastic element predicted to lie in series with the hair cell's mechanoelectrical transducer channel.
Collapse
Affiliation(s)
- Guy P Richardson
- Sussex Neuroscience, School of Life Sciences, University of Sussex, Falmer, Brighton BN1 9QG, United Kingdom
| | - Christine Petit
- Institut Pasteur, 75724 Paris Cedex 15, France.,Collège de France, 75231 Paris Cedex 05, France
| |
Collapse
|
46
|
Fontenaille C, Meunier B, Ebbo M, Faucher B, Soare S, Zandotti C, Petit C, Coulon A, Sanchez P, Ernest V, Durand J, Schleinitz N, Harlé J, Bernit E. La ponction lombaire pose le diagnostic. Rev Med Interne 2019. [DOI: 10.1016/j.revmed.2019.10.321] [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: 11/26/2022]
|
47
|
Guckert M, Clouqueur E, Drumez E, Petit C, Houfflin-Debarge V, Subtil D, Garabedian C. Is homecare management associated with longer latency in preterm premature rupture of membranes? Arch Gynecol Obstet 2019; 301:61-67. [PMID: 31760462 DOI: 10.1007/s00404-019-05363-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 10/25/2019] [Indexed: 12/01/2022]
Abstract
PURPOSE According to national guidelines, conventional management of preterm premature rupture of membranes (PPROM) is hospitalization until induction. Outpatient management could be another option. Our objective was to compare latency period between patients managed in hospital versus outpatients. METHODS A retrospective before/after monocentric study that occured from 2002 to 2015. Were included all patients with PPROM prior to 35 weeks with homecare inclusion criteria. The primary outcome measure was to study length of latency period (delay between PPROM and delivery). Second outcome measures were maternal and perinatal morbidities and mortalities. RESULTS Among the 395 women included after PPROM, 191 were managed as outpatients and 204 in hospital. In the outpatient group, the length of latency period was longer than in the inpatient group [39 (IQR 20 to 66) versus 21 (IQR 13 to 42) days; p < 0.001]. Clinical chorioamnionitis was observed in 30 (15.7%) in outpatient group versus 49 (24.0%) in inpatient group (p = 0.039). Concerning neonatal outcome, there were less neonatal transfer (49.2% versus 77.2%, p < 0.001), less respiratory distress syndrome (29.4% versus 47.5%; p < 0.001), less neonatal sepsis (13.9% versus 22.1%; p = 0.037), less bronchodysplasia (2.7% versus 9.8%; p = 0.004), and less pulmonary arterial hypertension (4.8% versus 10.3%; p = 0.040) in the outpatient group than in the inpatient group. CONCLUSION Home management seems to be a safe option to hospitalization in selected patients with PPROM. However, a randomized study would be required to approve those results.
Collapse
Affiliation(s)
- M Guckert
- Department of Obstetrics, CHU Lille, Avenue Eugène Avinée, 59000, Lille, France.
| | - E Clouqueur
- Department of Obstetrics, CHU Lille, Avenue Eugène Avinée, 59000, Lille, France
| | - E Drumez
- Department of Biostatistics, Univ. Lille, CHU Lille, EA 2694-Public Health Epidemiology and Healthcare Quality, 59000, Lille, France
| | - C Petit
- Department of Obstetrics, CHU Lille, Avenue Eugène Avinée, 59000, Lille, France
| | - V Houfflin-Debarge
- Department of Obstetrics, CHU Lille, Avenue Eugène Avinée, 59000, Lille, France
- University of Lille, EA 4489-Perinatal Environment and Health, 59000, Lille, France
| | - D Subtil
- Department of Obstetrics, CHU Lille, Avenue Eugène Avinée, 59000, Lille, France
| | - C Garabedian
- Department of Obstetrics, CHU Lille, Avenue Eugène Avinée, 59000, Lille, France
- University of Lille, EA 4489-Perinatal Environment and Health, 59000, Lille, France
| |
Collapse
|
48
|
Fakin A, Šuštar M, Brecelj J, Bonnet C, Petit C, Zupan A, Glavač D, Jarc-Vidmar M, Battelino S, Hawlina M. Double Hyperautofluorescent Rings in Patients with USH2A-Retinopathy. Genes (Basel) 2019; 10:genes10120956. [PMID: 31766479 PMCID: PMC6947471 DOI: 10.3390/genes10120956] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [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: 10/30/2019] [Revised: 11/17/2019] [Accepted: 11/18/2019] [Indexed: 11/16/2022] Open
Abstract
USH2A mutation is the most common cause of retinitis pigmentosa, with or without hearing impairment. Patients most commonly exhibit hyperautofluorescent ring on fundus autofluorescence imaging (FAF) and rod-cone dystrophy on electrophysiology. A detailed study of three USH2A patients with a rare pattern of double hyperautofluorescent rings was performed. Twenty-four patients with typical single hyperautofluorescent rings were used for comparison of the ages of onset, visual fields, optical coherence tomography, electrophysiology, and audiograms. Double rings delineated the area of pericentral retinal degeneration in all cases. Two patients exhibited rod-cone dystrophy, whereas the third had a cone-rod dystrophy type of dysfunction on electrophysiology. There was minimal progression on follow-up in all three. Patients with double rings had significantly better visual acuity, cone function, and auditory performance than the single ring group. Double rings were associated with combinations of null and missense mutations, none of the latter found in the single ring patients. According to these findings, the double hyperautofluorescent rings indicate a mild subtype of USH2A disease, characterized by pericentral retinal degeneration, mild to moderate hearing loss, and either a rod-cone or cone-rod pattern on electrophysiology, the latter expanding the known clinical spectrum of USH2A-retinopathy.
Collapse
Affiliation(s)
- Ana Fakin
- Eye Hospital, University Medical Centre Ljubljana, 1000 Ljubljana, Slovenia; (M.Š.); (J.B.); (M.J.-V.); (M.H.)
- Correspondence: ; Tel.: +386-1522-1900
| | - Maja Šuštar
- Eye Hospital, University Medical Centre Ljubljana, 1000 Ljubljana, Slovenia; (M.Š.); (J.B.); (M.J.-V.); (M.H.)
| | - Jelka Brecelj
- Eye Hospital, University Medical Centre Ljubljana, 1000 Ljubljana, Slovenia; (M.Š.); (J.B.); (M.J.-V.); (M.H.)
| | - Crystel Bonnet
- Unité de Génétique et Physiologie de l’Audition, Institut Pasteur, 75015 Paris, France; (C.B.); (C.P.)
- Unité Mixte de Recherche en Santé (UMRS) 1120, Institut National de la Santé et de la Recherche Médicale (INSERM), 75015 Paris, France
- Complexité du Vivant, Sorbonne Universités, Université Pierre et Marie Curie, Université Paris 06, 75005 Paris, France
- Institut de l’Audition, 75012 Paris, France
- Syndrome de Usher et Autres Atteintes Rétino-Cochléaires, Institut de la Vision, 75012 Paris, France
| | - Christine Petit
- Unité de Génétique et Physiologie de l’Audition, Institut Pasteur, 75015 Paris, France; (C.B.); (C.P.)
- Unité Mixte de Recherche en Santé (UMRS) 1120, Institut National de la Santé et de la Recherche Médicale (INSERM), 75015 Paris, France
- Complexité du Vivant, Sorbonne Universités, Université Pierre et Marie Curie, Université Paris 06, 75005 Paris, France
- Institut de l’Audition, 75012 Paris, France
- Syndrome de Usher et Autres Atteintes Rétino-Cochléaires, Institut de la Vision, 75012 Paris, France
- Collège de France, 75005 Paris, France
| | - Andrej Zupan
- Department of Molecular Genetics, Institute of Pathology, Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia; (A.Z.); (D.G.)
| | - Damjan Glavač
- Department of Molecular Genetics, Institute of Pathology, Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia; (A.Z.); (D.G.)
| | - Martina Jarc-Vidmar
- Eye Hospital, University Medical Centre Ljubljana, 1000 Ljubljana, Slovenia; (M.Š.); (J.B.); (M.J.-V.); (M.H.)
| | - Saba Battelino
- Department of Otorhinolaryngology and Cervicofacial Surgery, University Medical Centre Ljubljana, 1000 Ljubljana, Slovenia;
- Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia
| | - Marko Hawlina
- Eye Hospital, University Medical Centre Ljubljana, 1000 Ljubljana, Slovenia; (M.Š.); (J.B.); (M.J.-V.); (M.H.)
| |
Collapse
|
49
|
Dunbar LA, Patni P, Aguilar C, Mburu P, Corns L, Wells HRR, Delmaghani S, Parker A, Johnson S, Williams D, Esapa CT, Simon MM, Chessum L, Newton S, Dorning J, Jeyarajan P, Morse S, Lelli A, Codner GF, Peineau T, Gopal SR, Alagramam KN, Hertzano R, Dulon D, Wells S, Williams FM, Petit C, Dawson SJ, Brown SDM, Marcotti W, El‐Amraoui A, Bowl MR. Clarin-2 is essential for hearing by maintaining stereocilia integrity and function. EMBO Mol Med 2019; 11:e10288. [PMID: 31448880 PMCID: PMC6728604 DOI: 10.15252/emmm.201910288] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 07/23/2019] [Accepted: 07/26/2019] [Indexed: 11/21/2022] Open
Abstract
Hearing relies on mechanically gated ion channels present in the actin-rich stereocilia bundles at the apical surface of cochlear hair cells. Our knowledge of the mechanisms underlying the formation and maintenance of the sound-receptive structure is limited. Utilizing a large-scale forward genetic screen in mice, genome mapping and gene complementation tests, we identified Clrn2 as a new deafness gene. The Clrn2clarinet/clarinet mice (p.Trp4* mutation) exhibit a progressive, early-onset hearing loss, with no overt retinal deficits. Utilizing data from the UK Biobank study, we could show that CLRN2 is involved in human non-syndromic progressive hearing loss. Our in-depth morphological, molecular and functional investigations establish that while it is not required for initial formation of cochlear sensory hair cell stereocilia bundles, clarin-2 is critical for maintaining normal bundle integrity and functioning. In the differentiating hair bundles, lack of clarin-2 leads to loss of mechano-electrical transduction, followed by selective progressive loss of the transducing stereocilia. Together, our findings demonstrate a key role for clarin-2 in mammalian hearing, providing insights into the interplay between mechano-electrical transduction and stereocilia maintenance.
Collapse
Affiliation(s)
- Lucy A Dunbar
- Mammalian Genetics UnitMRC Harwell InstituteHarwellUK
| | - Pranav Patni
- Déficits Sensoriels ProgressifsInstitut PasteurINSERM UMR‐S 1120Sorbonne UniversitésParisFrance
| | | | | | - Laura Corns
- Department of Biomedical ScienceUniversity of SheffieldSheffieldUK
| | - Helena RR Wells
- Department of Twin Research & Genetic EpidemiologyKing's College LondonLondonUK
| | - Sedigheh Delmaghani
- Déficits Sensoriels ProgressifsInstitut PasteurINSERM UMR‐S 1120Sorbonne UniversitésParisFrance
| | - Andrew Parker
- Mammalian Genetics UnitMRC Harwell InstituteHarwellUK
| | - Stuart Johnson
- Department of Biomedical ScienceUniversity of SheffieldSheffieldUK
| | | | | | | | | | | | | | | | - Susan Morse
- Mammalian Genetics UnitMRC Harwell InstituteHarwellUK
| | - Andrea Lelli
- Génétique et Physiologie de l'AuditionInstitut PasteurINSERM UMR‐S 1120Collège de FranceSorbonne UniversitésParisFrance
| | | | - Thibault Peineau
- Laboratoire de Neurophysiologie de la Synapse AuditiveUniversité de BordeauxBordeauxFrance
| | - Suhasini R Gopal
- Department of Otolaryngology – Head and Neck SurgeryUniversity Hospitals Cleveland Medical CenterCase Western Reserve UniversityClevelandOHUSA
| | - Kumar N Alagramam
- Department of Otolaryngology – Head and Neck SurgeryUniversity Hospitals Cleveland Medical CenterCase Western Reserve UniversityClevelandOHUSA
| | - Ronna Hertzano
- Department of Otorhinolaryngology Head and Neck Surgery, Anatomy and Neurobiology and Institute for Genome SciencesUniversity of Maryland School of MedicineBaltimoreMDUSA
| | - Didier Dulon
- Laboratoire de Neurophysiologie de la Synapse AuditiveUniversité de BordeauxBordeauxFrance
| | - Sara Wells
- Mary Lyon CentreMRC Harwell InstituteHarwellUK
| | - Frances M Williams
- Department of Twin Research & Genetic EpidemiologyKing's College LondonLondonUK
| | - Christine Petit
- Génétique et Physiologie de l'AuditionInstitut PasteurINSERM UMR‐S 1120Collège de FranceSorbonne UniversitésParisFrance
| | | | | | - Walter Marcotti
- Department of Biomedical ScienceUniversity of SheffieldSheffieldUK
| | - Aziz El‐Amraoui
- Déficits Sensoriels ProgressifsInstitut PasteurINSERM UMR‐S 1120Sorbonne UniversitésParisFrance
| | | |
Collapse
|
50
|
Talbi S, Bonnet C, Boudjenah F, Mansouri MT, Petit C, Ammar Khodja F. The spectrum of GJB2 gene mutations in Algerian families with nonsyndromic hearing loss from Sahara and Kabylie regions. Int J Pediatr Otorhinolaryngol 2019; 124:157-160. [PMID: 31200317 DOI: 10.1016/j.ijporl.2019.05.036] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 05/23/2019] [Accepted: 05/23/2019] [Indexed: 01/14/2023]
Abstract
INTRODUCTION DFNB1, caused by mutations of GJB2 or GJB6, is the most prevalent genetic form of nonsyndromic (i.e., isolated) congenital deafness in countries located around the Mediterranean Sea. Because some mutations are restricted to specific ethnic-geographic groups, we studied the prevalence and spectrum of GJB2/GJB6 mutations in deaf patients originating from two different Algerian regions, Kabylie and Sahara. PATIENTS AND METHODS Among 91 reportedly unrelated Algerian patients affected by prelingual deafness, 80 patients (41 from Kabylie and 39 from Sahara) were diagnosed with isolated deafness. All had profound deafness, except one patient with mild deafness. They were screened for the presence of GJB2 mutations by direct sequencing of the single coding exon of GJB2. Patients without mutations were then screened for the presence of the most frequent two deletions of GJB6: del(GJB6-D13S1854) and del(GJB6-D13S1830). RESULTS Causative mutations were found in 13 and 8 patients from Kabylie and Sahara, respectively, accounting for more than a quarter of the cohort. The c.35delG, p.Gly12Valfs*2 mutation remains the most important mutation both in Kabylie (10 patients) and Sahara (7 patients). All detected patients were homozygous for this mutation. In addition, two other mutations (c.139G > T, p.Glu47* and c.167delT, p.Leu56Argfs*26) were found homozygous in one family each, and two patients were compound heterozygotes for (c.35delG p.Gly12Valfs*2/c.139G > T, p.Glu47*). No deletion of GJB6 was detected. CONCLUSION We confirm that mutations in GJB2, mainly c.35delG, are one of the most prevalent causes of nonsyndromic congenital deafness in Algeria, whereas the del (GJB6-D13S1854) and del (GJB6-D13S1830) deletions of GJB6 contribute little, if any. Further investigation is needed to identify the cause of deafness in other patients without diagnostic.
Collapse
Affiliation(s)
- Sonia Talbi
- Equipe de Génétique, Laboratoire de Biologie Cellulaire et Moléculaire, Faculté des Sciences Biologiques, Université des Sciences et de la Technologie Houari Boumediene (USTHB), POB32 ElAlia, 16111, Bab Ezzouar, Alger, Algeria.
| | - Crystel Bonnet
- Inserm UMRS 1120, Institut de la Vision, Sorbonne Université, Paris, France
| | - Farid Boudjenah
- Service d'Otorhinolaryngologie (ORL), Hôpital de Frantz fanon, Bejaia, Algeria; Service d'Otorhinolaryngologie (ORL), Hôpital Sidi Belloua, Tizi-Ouzou, Algeria
| | | | - Christine Petit
- Inserm UMRS 1120, Institut de la Vision, Sorbonne Université, Paris, France; Institut Pasteur, Collège de France, Paris, France
| | - Fatima Ammar Khodja
- Equipe de Génétique, Laboratoire de Biologie Cellulaire et Moléculaire, Faculté des Sciences Biologiques, Université des Sciences et de la Technologie Houari Boumediene (USTHB), POB32 ElAlia, 16111, Bab Ezzouar, Alger, Algeria
| |
Collapse
|