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Koschitzki K, Ivanova I, Berneburg M. [Progeroid syndromes : Aging, skin aging, and mechanisms of progeroid syndromes]. DERMATOLOGIE (HEIDELBERG, GERMANY) 2023; 74:696-706. [PMID: 37650893 PMCID: PMC10480280 DOI: 10.1007/s00105-023-05212-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 07/21/2023] [Indexed: 09/01/2023]
Abstract
Progeroid syndromes (PSs) are characterized by the premature onset of age-related pathologies. PSs display a wide range of heterogeneous pathological symptoms that also manifest during natural aging, including vision and hearing loss, atrophy, hair loss, progressive neurodegeneration, and cardiovascular defects. Recent advances in molecular pathology have led to a better understanding of the underlying mechanisms of these diseases. The genetic mutations underlying PSs are functionally linked to genome maintenance and repair, supporting the causative role of DNA damage accumulation in aging. While some of those genes encode proteins with a direct involvement in a DNA repair machinery, such as nucleotide excision repair (NER), others destabilize the genome by compromising the stability of the nuclear envelope, when lamin A is dysfunctional in Hutchinson-Gilford progeria syndrome (HGPS) or regulate the DNA damage response (DDR) such as the ataxia telangiectasia-mutated (ATM) gene. Understanding the molecular pathology of progeroid diseases is crucial in developing potential treatments to manage and prevent the onset of symptoms. This knowledge provides insight into the underlying mechanisms of premature aging and could lead to improved quality of life for individuals affected by progeroid diseases.
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Affiliation(s)
- Kevin Koschitzki
- Poliklinik und Klinik für Dermatologie, Universitätsklinikum Regensburg, Regensburg, Deutschland.
| | - Irina Ivanova
- Poliklinik und Klinik für Dermatologie, Universitätsklinikum Regensburg, Regensburg, Deutschland
| | - Mark Berneburg
- Poliklinik und Klinik für Dermatologie, Universitätsklinikum Regensburg, Regensburg, Deutschland
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Sachendra B, Biswaroop C, Bhawana A, Saurabh B, Prashant J, Neerja G, Madhulika K, Sheffali G. Solving the Riddle of Developmental Delay with Hair Microscopy: Trichothiodystrophy (MPLKIP Mutation in an Indian Child). Neurol India 2022; 70:2302-2303. [PMID: 36352688 DOI: 10.4103/0028-3886.359296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Badal Sachendra
- Division of Child Neurology, Department of Pediatrics, AIIMS, New Delhi, India
| | | | - Aggarwal Bhawana
- Division of Genetics, Department of Pediatrics, AIIMS, New Delhi, India
| | | | - Jauhari Prashant
- Division of Child Neurology, Department of Pediatrics, AIIMS, New Delhi, India
| | - Gupta Neerja
- Division of Genetics, Department of Pediatrics, AIIMS, New Delhi, India
| | - Kabra Madhulika
- Division of Genetics, Department of Pediatrics, AIIMS, New Delhi, India
| | - Gulati Sheffali
- Division of Child Neurology, Department of Pediatrics, AIIMS, New Delhi, India
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Gruber R, Zschocke A, Zellner H, Schmuth M. Successful treatment of trichothiodystrophy with dupilumab. Clin Exp Dermatol 2021; 46:1381-1383. [PMID: 33955026 PMCID: PMC8518772 DOI: 10.1111/ced.14642] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 03/04/2021] [Accepted: 03/08/2021] [Indexed: 11/30/2022]
Abstract
Click here for the corresponding questions to this CME article.
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Affiliation(s)
- R Gruber
- Department of Dermatology, Venereology and Allergy, Medical University of Innsbruck, Innsbruck, Austria
| | - A Zschocke
- Department of Pediatrics, Pediatrics III, Medical University of Innsbruck, Innsbruck, Austria
| | - H Zellner
- Department of Pediatrics, Pediatrics I, Medical University of Innsbruck, Innsbruck, Austria
| | - M Schmuth
- Department of Dermatology, Venereology and Allergy, Medical University of Innsbruck, Innsbruck, Austria
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Hashimoto S, Takanari H, Compe E, Egly JM. Dysregulation of LXR responsive genes contribute to ichthyosis in trichothiodystrophy. J Dermatol Sci 2020; 97:201-207. [PMID: 32037099 DOI: 10.1016/j.jdermsci.2020.01.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 12/29/2019] [Accepted: 01/21/2020] [Indexed: 02/01/2023]
Abstract
BACKGROUND Trichothiodystrophy (TTD) is a rare autosomal recessive disorder characterised by brittle hairs and various systemic symptoms, including photosensitivity and ichthyosis. While photosensitivity could result from DNA repair defects, other TTD clinical features might be due to deficiencies in certain molecular processes. OBJECTIVES The aim of this study was to understand the pathophysiological mechanism of ichthyosis in TTD, focused on the transcriptional dysregulation. METHODS TTD mouse skin tissue and keratinocytes were pathologically and physiologically examined to identify the alteration of lipid homeostasis in TTD with ichtyosis. Gene expression of certain lipid transporter was assessed in fibroblasts derived from TTD patients and TTD mouse keratinocytes. RESULTS Histopathology and electron microscopy revealed abnormal lipid composition in TTD mice skin. In addition to abnormal cholesterol dynamics, TTD mouse keratinocytes exhibit impaired expression of Liver X receptor (LXR) responsive genes, including Abca12, a key regulator of Harlequin ichthyosis, and Abcg1 that is involved in the cholesterol transport process in the epidermis. Strikingly, dysregulation of LXR responsive genes has been only observed in cells isolated from TTD patients who developed ichthyosis. CONCLUSIONS Our results suggest that the altered expression of the LXR-responsive genes contribute to the pathophysiology of ichthyosis in TTD. These findings provide a new drug discovery target for TTD.
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Affiliation(s)
- Satoru Hashimoto
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, CNRS/INSERM/Université de Strasbourg, Strasbourg, France; Clinical Research Center for Diabetes, Tokushima University Hospital, Tokushima, Japan; Department of Genetics, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Japan.
| | - Hiroki Takanari
- Clinical Research Center for Diabetes, Tokushima University Hospital, Tokushima, Japan; Department of Interdisciplinary Researches for Medicine and Photonics, Institute of Post-LED Photonics, Tokushima, Japan
| | - Emmanuel Compe
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, CNRS/INSERM/Université de Strasbourg, Strasbourg, France
| | - Jean-Marc Egly
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, CNRS/INSERM/Université de Strasbourg, Strasbourg, France.
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Leemans G, De Raeve L, Keymolen K. ERCC2 mutations in two siblings with a severe trichothiodystrophy phenotype. J Eur Acad Dermatol Venereol 2020; 34:876-879. [PMID: 31803976 DOI: 10.1111/jdv.16134] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Accepted: 11/20/2019] [Indexed: 11/28/2022]
Abstract
BACKGROUND Trichothiodystrophy (TTD) describes a group of rare genetic disorders of DNA repair, characterized by sulphur-deficient hair, skin anomalies and systemic complications like preterm delivery, neurological impairment, haematological and ophthalmological abnormalities and life-threatening infections. OBJECTIVES The aim of this case report was to investigate the contribution of the gene mutation to the phenotype. METHODS We describe the clinical and molecular characteristics of a family with two TTD-affected siblings who died before the age of 2 years. RESULTS The causal mutated gene is the ERCC2 gene, and one of the identified mutations is the c.2164C>T (p.Arg722Trp) variant. The association of this mutation with a severe TTD phenotype was suggested earlier in literature, and the present family adds further evidence to this hypothesis. CONCLUSION Accurate identification of the underlying genetic defect can guide the clinical follow-up and counselling of patients and their families.
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Affiliation(s)
- G Leemans
- Department of Dermatology and Pathology, Universitair Ziekenhuis Brussel (UZB), Vrije Universiteit Brussel (VUB), Brussels, Belgium
| | - L De Raeve
- Department of Dermatology, Universitair Ziekenhuis Brussel (UZB), Vrije Universiteit Brussel (VUB), Brussels, Belgium
| | - K Keymolen
- Centre for Medical Genetics, Universitair Ziekenhuis Brussel (UZB), Vrije Universiteit Brussel (VUB), Brussels, Belgium
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Frank J, Betz RC. Haaranomalien bei syndromalen Erkrankungen. Hautarzt 2019; 70:514-519. [DOI: 10.1007/s00105-019-4440-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Vilas Boas P, Sanchez-Herrero A, Suárez-Fernández R, Campos-Dominguez M. Neonatal ichthyosis and hypotrichosis. Pediatr Dermatol 2019; 36:e77-e78. [PMID: 31290609 DOI: 10.1111/pde.13822] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Pedro Vilas Boas
- Department of Dermatology, Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | | | - Ricardo Suárez-Fernández
- Department of Dermatology, Hospital General Universitario Gregorio Marañón, Madrid, Spain.,Facultad de Medicina, Universidad Complutense de Madrid, Madrid, Spain
| | - Minia Campos-Dominguez
- Department of Dermatology, Hospital General Universitario Gregorio Marañón, Madrid, Spain.,Facultad de Medicina, Universidad Complutense de Madrid, Madrid, Spain.,Laboratory of Immune-Regulation (LIR), Gregorio Marañón Health Research Institute (IISGM), Madrid, Spain
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Michalska E, Koppolu A, Dobrzańska A, Płoski R, Gruszfeld D. A case of severe trichothiodystrophy 3 in a neonate due to mutation in the GTF2H5 gene: Clinical report. Eur J Med Genet 2018; 62:103557. [PMID: 30359777 DOI: 10.1016/j.ejmg.2018.10.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 10/12/2018] [Accepted: 10/20/2018] [Indexed: 01/08/2023]
Abstract
Trichothiodystrophy (TTD) is a group of predominantly autosomal recessive disorders characterized by sulfur-deficient brittle hair. Clinical features of TTD consist of variable neuroectodermal symptoms including ichthyosis, nail abnormalities, mental retardation, short stature, decreased fertility and proneness to infections. Approximately half of the reported patients with TTD have clinical and cellular photosensitivity associated with mutations in three subunits (ERCC3, ERCC2, GTF2H5) of the basal transcription factor TFHII, which is involved in transcription and nucleotide excision repair. We report on a case of a male neonate with a novel GTF2H5 gene mutation, detected by whole exome sequencing. The GTF2H5 gene's role is to provide stability to the entire TFHII complex. The reported patient was born at 33 weeks' gestation from a pregnancy complicated by intrauterine growth restriction and premature rupture of membranes. His main clinical problems included severe congenital ichthyosis and proneness to infections with episodes of multiorgan failure. The infant's history displays the most severe clinical manifestations among patients with GTF2H5 gene mutations that have so far been reported.
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Affiliation(s)
- Eliza Michalska
- Department of Neonatal Intensive Care, The Children's Memorial Health Institute, Poland.
| | - Agnieszka Koppolu
- Department of Medical Genetics, Warsaw Medical University, Poland; Postgraduate School of Molecular Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Anna Dobrzańska
- Department of Neonatal Intensive Care, The Children's Memorial Health Institute, Poland
| | - Rafał Płoski
- Department of Medical Genetics, Warsaw Medical University, Poland
| | - Dariusz Gruszfeld
- Department of Neonatal Intensive Care, The Children's Memorial Health Institute, Poland
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Rudnicka L, Olszewska M, Waśkiel A, Rakowska A. Trichoscopy in Hair Shaft Disorders. Dermatol Clin 2018; 36:421-430. [DOI: 10.1016/j.det.2018.05.009] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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11
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Novel contiguous gene deletion in peruvian girl with Trichothiodystrophy type 4 and glutaric aciduria type 3. Eur J Med Genet 2018; 61:388-392. [DOI: 10.1016/j.ejmg.2018.02.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Revised: 01/19/2018] [Accepted: 02/03/2018] [Indexed: 11/27/2022]
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Rasheed M, Shahzad S, Zaeem A, Afzal I, Gul A, Khalid S. Updated strategies for the management, pathogenesis and molecular genetics of different forms of ichthyosis syndromes with prominent hair abnormalities. Arch Dermatol Res 2017; 309:773-785. [PMID: 28913623 DOI: 10.1007/s00403-017-1780-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Revised: 08/12/2017] [Accepted: 09/08/2017] [Indexed: 10/18/2022]
Abstract
Syndromic ichthyosis is rare inherited disorders of cornification with varied disease complications. This disorder appears in seventeen subtypes associated with severe systematic manifestations along with medical, cosmetic and social problems. Syndromic ichthyosis with prominent hair abnormalities covers five major subtypes: Netherton syndrome, trichothiodystrophy, ichthyosis hypotrichosis syndrome, ichthyosis hypotrichosis sclerosing cholangitis and ichthyosis follicularis atrichia photophobia syndrome. These syndromes mostly prevail in high consanguinity states, with distinctive clinical features. The known pathogenic molecules involved in ichthyosis syndromes with prominent hair abnormalities include SPINK5, ERCC2, ERCC3, GTF2H5, MPLKIP, ST14, CLDN1 and MBTPS2. Despite underlying genetic origin, most of the health professionals solely rely on phenotypic expression of these disorders that leads to improper management of patients, hence making these patients living an orphanage life. After dermal features, association of other systems such as nervous system, skeletal system, hair abnormalities or liver problems may sometimes give clues for diagnosis but still leaving place for molecular screening for efficient diagnosis. In this paper, we have presented a review of ichthyosis syndrome with prominent hair abnormalities, with special emphasis on their updated genetic consequences and disease management. Additionally, we aim to update health professionals about the practice of molecular screening in ichthyosis syndromes for appropriate diagnosis and treatment.
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Affiliation(s)
- Madiha Rasheed
- Department of Bioinformatics and Biotechnology, Maryum Block, International Islamic University Islamabad, H-10, Islamabad, 44000, Pakistan
| | - Shaheen Shahzad
- Department of Bioinformatics and Biotechnology, Maryum Block, International Islamic University Islamabad, H-10, Islamabad, 44000, Pakistan.
| | - Afifa Zaeem
- Department of Bioinformatics and Biotechnology, Maryum Block, International Islamic University Islamabad, H-10, Islamabad, 44000, Pakistan
| | - Imran Afzal
- Department of Biology, Lahore Garrison University, Lahore, Pakistan
| | - Asma Gul
- Department of Bioinformatics and Biotechnology, Maryum Block, International Islamic University Islamabad, H-10, Islamabad, 44000, Pakistan
| | - Sumbal Khalid
- Department of Bioinformatics and Biotechnology, Maryum Block, International Islamic University Islamabad, H-10, Islamabad, 44000, Pakistan
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Yew YW, Giordano CN, Spivak G, Lim HW. Understanding photodermatoses associated with defective DNA repair: Photosensitive syndromes without associated cancer predisposition. J Am Acad Dermatol 2017; 75:873-882. [PMID: 27745642 DOI: 10.1016/j.jaad.2016.03.044] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2015] [Revised: 02/25/2016] [Accepted: 03/07/2016] [Indexed: 11/17/2022]
Abstract
Photodermatoses associated with defective DNA repair are a group of photosensitive hereditary skin disorders. In this review, we focus on diseases and syndromes with defective nucleotide excision repair that are not accompanied by an increased risk of cutaneous malignancies despite having photosensitivity. Specifically, the gene mutations and transcription defects, epidemiology, and clinical features of Cockayne syndrome, cerebro-oculo-facial-skeletal syndrome, ultraviolet-sensitive syndrome, and trichothiodystrophy will be discussed. These conditions may also have other extracutaneous involvement affecting the neurologic system and growth and development. Rigorous photoprotection remains an important component of the management of these inherited DNA repair-deficiency photodermatoses.
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Affiliation(s)
- Yik Weng Yew
- Department of Dermatology, National Skin Centre, Singapore
| | | | - Graciela Spivak
- Department of Biology, Stanford University, Stanford, California
| | - Henry W Lim
- Department of Dermatology, Henry Ford Hospital, Detroit, Michigan.
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Brittle Hair, Photosensitivity, Brain Hypomyelination and Immunodeficiency: Clues to Trichothiodystrophy. Indian J Pediatr 2017; 84:89-90. [PMID: 27473476 DOI: 10.1007/s12098-016-2209-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Accepted: 07/25/2016] [Indexed: 10/21/2022]
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Miguet M, Thevenon J, Laugel V, Lefebvre M, Bourchany A, Rivière JB, Duffourd Y, Schaefer E, Antal MC, Abida R, Weingertner AS, Kremer V, Vabres P, Morice-Picard F, Gonzales M, Lipsker D, Fraitag S, Mandel JL, Chelly J, Dollfus H, Faivre L, Thauvin-Robinet C, Calmels N, El Chehadeh S. Mutations in theERCC2(XPD) gene associated with severe fetal ichthyosis and dysmorphic features. Prenat Diagn 2016; 36:1276-1279. [DOI: 10.1002/pd.4965] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 10/19/2016] [Accepted: 11/04/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Marguerite Miguet
- Service de Génétique Médicale, Institut de Génétique Médicale d'Alsace (IGMA), Centre de Référence Maladies Rares Anomalies du Développement et Syndromes Malformatifs de l'Est, Hôpitaux Universitaires de Strasbourg; Hôpital de Hautepierre; Strasbourg France
| | - Julien Thevenon
- FHU TRANSLAD, Centre de Référence Maladies Rares, Anomalies du Développement et Syndromes Malformatifs de l'Est, Centre de Génétique; CHU de Dijon; Dijon France
- GAD: EA 4271, Génétique et Anomalies du Développement (GAD); Université de Bourgogne; Dijon France
| | - Vincent Laugel
- Service de Neuropédiatrie, Hôpitaux Universitaires de Strasbourg; Hôpital de Hautepierre; Strasbourg France
- U1112 Laboratoire de Génétique Médicale, Faculté de Médecine; Université de Strasbourg; Strasbourg France
| | - Mathilde Lefebvre
- FHU TRANSLAD, Centre de Référence Maladies Rares, Anomalies du Développement et Syndromes Malformatifs de l'Est, Centre de Génétique; CHU de Dijon; Dijon France
| | - Aurélie Bourchany
- FHU TRANSLAD, Centre de Référence Maladies Rares, Anomalies du Développement et Syndromes Malformatifs de l'Est, Centre de Génétique; CHU de Dijon; Dijon France
| | - Jean-Baptiste Rivière
- GAD: EA 4271, Génétique et Anomalies du Développement (GAD); Université de Bourgogne; Dijon France
- Laboratoire de Biologie Moléculaire, Plateau Technique de Biologie; CHU de Dijon; Dijon France
| | - Yannis Duffourd
- GAD: EA 4271, Génétique et Anomalies du Développement (GAD); Université de Bourgogne; Dijon France
- Laboratoire de Biologie Moléculaire, Plateau Technique de Biologie; CHU de Dijon; Dijon France
| | - Elise Schaefer
- Service de Génétique Médicale, Institut de Génétique Médicale d'Alsace (IGMA), Centre de Référence Maladies Rares Anomalies du Développement et Syndromes Malformatifs de l'Est, Hôpitaux Universitaires de Strasbourg; Hôpital de Hautepierre; Strasbourg France
| | | | - Rosalie Abida
- Centre de Ressources Biologiques; Hôpitaux Universitaires de Strasbourg; Strasbourg France
| | - Anne-Sophie Weingertner
- Service de Gynécologie-Obstétrique; Centre Médico-Chirurgical et Obstétrical; Schiltigheim France
| | - Valérie Kremer
- Service de Cytogénétique, Hôpitaux Universitaires de Strasbourg; Hôpital de Hautepierre; Strasbourg France
| | - Pierre Vabres
- Service de Dermatologie; CHU de Dijon; Dijon France
- GAD: EA 4271, Génétique et Anomalies du Développement (GAD); Université de Bourgogne; Dijon France
| | - Fanny Morice-Picard
- Unité de Dermatologie Pédiatrique, CHU de Bordeaux; Hôpital Pellegrin; Bordeaux France
| | - Marie Gonzales
- Département de Génétique Médicale, CHU Paris Est, Hôpital Armand Trousseau; APHP et UPMC; Paris France
| | - Dan Lipsker
- Service de Dermatologie, Hôpitaux Universitaires de Strasbourg; Hôpital civil; Strasbourg France
| | - Sylvie Fraitag
- Département de Pathologie, Hôpital Necker-Enfants Malades; APHP; Paris France
| | - Jean-Louis Mandel
- Laboratoire de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg; Nouvel Hôpital Civil; Strasbourg France
| | - Jamel Chelly
- Laboratoire de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg; Nouvel Hôpital Civil; Strasbourg France
| | - Hélène Dollfus
- Service de Génétique Médicale, Institut de Génétique Médicale d'Alsace (IGMA), Centre de Référence Maladies Rares Anomalies du Développement et Syndromes Malformatifs de l'Est, Hôpitaux Universitaires de Strasbourg; Hôpital de Hautepierre; Strasbourg France
- U1112 Laboratoire de Génétique Médicale, Faculté de Médecine; Université de Strasbourg; Strasbourg France
| | - Laurence Faivre
- FHU TRANSLAD, Centre de Référence Maladies Rares, Anomalies du Développement et Syndromes Malformatifs de l'Est, Centre de Génétique; CHU de Dijon; Dijon France
- GAD: EA 4271, Génétique et Anomalies du Développement (GAD); Université de Bourgogne; Dijon France
| | - Christel Thauvin-Robinet
- FHU TRANSLAD, Centre de Référence Maladies Rares, Anomalies du Développement et Syndromes Malformatifs de l'Est, Centre de Génétique; CHU de Dijon; Dijon France
- GAD: EA 4271, Génétique et Anomalies du Développement (GAD); Université de Bourgogne; Dijon France
| | - Nadège Calmels
- Laboratoire de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg; Nouvel Hôpital Civil; Strasbourg France
| | - Salima El Chehadeh
- Service de Génétique Médicale, Institut de Génétique Médicale d'Alsace (IGMA), Centre de Référence Maladies Rares Anomalies du Développement et Syndromes Malformatifs de l'Est, Hôpitaux Universitaires de Strasbourg; Hôpital de Hautepierre; Strasbourg France
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Saral S, Vural A, Wollenberg A, Ruzicka T. A practical approach to ichthyoses with systemic manifestations. Clin Genet 2016; 91:799-812. [DOI: 10.1111/cge.12828] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Revised: 06/06/2016] [Accepted: 06/22/2016] [Indexed: 12/20/2022]
Affiliation(s)
- S. Saral
- Department of Dermatology and Venereology; Ankara University; Ankara Turkey
- Department of Dermatology and Allergology; Ludwig-Maximilian University; Munich Germany
| | - A. Vural
- Department of Neurology; Hacettepe University; Ankara Turkey
| | - A. Wollenberg
- Department of Dermatology and Allergology; Ludwig-Maximilian University; Munich Germany
| | - T. Ruzicka
- Department of Dermatology and Allergology; Ludwig-Maximilian University; Munich Germany
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17
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Nistal M, Paniagua R, González-Peramato P, Reyes-Múgica M. Perspectives in Pediatric Pathology, Chapter 17. Other Hypergonadotropic Hypogonadisms. Pediatr Dev Pathol 2016; 19:278-90. [PMID: 26809023 DOI: 10.2350/16-01-1755-pb.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
- Manuel Nistal
- 1 Department of Pathology, Hospital La Paz, Universidad Autónoma de Madrid, Madrid, Spain
| | - Ricardo Paniagua
- 2 Department of Cell Biology, Universidad de Alcala, Madrid, Spain
| | | | - Miguel Reyes-Múgica
- 3 Department of Pathology, Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center, Pittsburgh, PA 15224, USA
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18
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A novel mutation in the C7orf11 gene causes nonphotosensitive trichothiodystrophy in a multiplex highly consanguineous kindred. Eur J Med Genet 2015; 58:685-8. [DOI: 10.1016/j.ejmg.2015.10.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2015] [Revised: 10/18/2015] [Accepted: 10/23/2015] [Indexed: 01/10/2023]
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Dasgupta TS, Evans NS, Cusack CA. Developmental Delays, Fragile Hair, and Ichthyosis Since Infancy. Pediatr Dermatol 2015; 32:865-6. [PMID: 26584695 DOI: 10.1111/pde.12636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Trisha S Dasgupta
- Department of Dermatology, Drexel University, College of Medicine, Philadelphia, Pennsylvania
| | - Nicole S Evans
- Department of Dermatology, Drexel University, College of Medicine, Philadelphia, Pennsylvania
| | - Carrie Ann Cusack
- Department of Dermatology, Drexel University, College of Medicine, Philadelphia, Pennsylvania
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Hosseini M, Ezzedine K, Taieb A, Rezvani HR. Oxidative and Energy Metabolism as Potential Clues for Clinical Heterogeneity in Nucleotide Excision Repair Disorders. J Invest Dermatol 2015; 135:341-351. [DOI: 10.1038/jid.2014.365] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Revised: 08/01/2013] [Accepted: 08/04/2014] [Indexed: 12/23/2022]
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Cau P, Navarro C, Harhouri K, Roll P, Sigaudy S, Kaspi E, Perrin S, De Sandre-Giovannoli A, Lévy N. WITHDRAWN: Nuclear matrix, nuclear envelope and premature aging syndromes in a translational research perspective. Semin Cell Dev Biol 2014:S1084-9521(14)00058-5. [PMID: 24685615 DOI: 10.1016/j.semcdb.2014.03.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Revised: 03/03/2014] [Accepted: 03/09/2014] [Indexed: 10/25/2022]
Abstract
The Publisher regrets that this article is an accidental duplication of an article that has already been published, http://dx.doi.org/10.1016/j.semcdb.2014.03.022. The duplicate article has therefore been withdrawn. The full Elsevier Policy on Article Withdrawal can be found at http://www.elsevier.com/locate/withdrawalpolicy.
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Affiliation(s)
- Pierre Cau
- Aix-Marseille Université, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France(1); INSERM, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France(1); AP-HM, Service de Biologie Cellulaire, Hôpital La Timone, 264 Rue Saint Pierre, 13385 Marseille Cedex 5, France(2).
| | - Claire Navarro
- Aix-Marseille Université, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France(1); INSERM, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France(1)
| | - Karim Harhouri
- Aix-Marseille Université, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France(1); INSERM, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France(1)
| | - Patrice Roll
- Aix-Marseille Université, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France(1); INSERM, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France(1); AP-HM, Service de Biologie Cellulaire, Hôpital La Timone, 264 Rue Saint Pierre, 13385 Marseille Cedex 5, France(2)
| | - Sabine Sigaudy
- Aix-Marseille Université, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France(1); INSERM, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France(1); AP-HM, Département de Génétique Médicale, Hôpital d'enfants Timone, 264 Rue Saint Pierre, 13385 Marseille Cedex 5, France(3)
| | - Elise Kaspi
- Aix-Marseille Université, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France(1); INSERM, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France(1); AP-HM, Service de Biologie Cellulaire, Hôpital La Timone, 264 Rue Saint Pierre, 13385 Marseille Cedex 5, France(2)
| | - Sophie Perrin
- Aix-Marseille Université, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France(1); INSERM, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France(1)
| | - Annachiara De Sandre-Giovannoli
- Aix-Marseille Université, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France(1); INSERM, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France(1); AP-HM, Département de Génétique Médicale, Hôpital d'enfants Timone, 264 Rue Saint Pierre, 13385 Marseille Cedex 5, France(3)
| | - Nicolas Lévy
- Aix-Marseille Université, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France(1); INSERM, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France(1); AP-HM, Département de Génétique Médicale, Hôpital d'enfants Timone, 264 Rue Saint Pierre, 13385 Marseille Cedex 5, France(3).
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Cau P, Navarro C, Harhouri K, Roll P, Sigaudy S, Kaspi E, Perrin S, De Sandre-Giovannoli A, Lévy N. Nuclear matrix, nuclear envelope and premature aging syndromes in a translational research perspective. Semin Cell Dev Biol 2014; 29:125-47. [PMID: 24662892 DOI: 10.1016/j.semcdb.2014.03.021] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Lamin A-related progeroid syndromes are genetically determined, extremely rare and severe. In the past ten years, our knowledge and perspectives for these diseases has widely progressed, through the progressive dissection of their pathophysiological mechanisms leading to precocious and accelerated aging, from the genes mutations discovery until therapeutic trials in affected children. A-type lamins are major actors in several structural and functional activities at the nuclear periphery, as they are major components of the nuclear lamina. However, while this is usually poorly considered, they also play a key role within the rest of the nucleoplasm, whose defects are related to cell senescence. Although nuclear shape and nuclear envelope deformities are obvious and visible events, nuclear matrix disorganization and abnormal composition certainly represent the most important causes of cell defects with dramatic pathological consequences. Therefore, lamin-associated diseases should be better referred as laminopathies instead of envelopathies, this later being too restrictive, considering neither the key structural and functional roles of soluble lamins in the entire nucleoplasm, nor the nuclear matrix contribution to the pathophysiology of lamin-associated disorders and in particular in defective lamin A processing-associated aging diseases. Based on both our understanding of pathophysiological mechanisms and the biological and clinical consequences of progeria and related diseases, therapeutic trials have been conducted in patients and were terminated less than 10 years after the gene discovery, a quite fast issue for a genetic disease. Pharmacological drugs have been repurposed and used to decrease the toxicity of the accumulated, unprocessed and truncated prelaminA in progeria. To date, none of them may be considered as a cure for progeria and these clinical strategies were essentially designed toward reducing a subset of the most dramatic and morbid features associated to progeria. New therapeutic strategies under study, in particular targeting the protein expression pathway at the mRNA level, have shown a remarkable efficacy both in vitro in cells and in vivo in mice models. Strategies intending to clear the toxic accumulated proteins from the nucleus are also under evaluation. However, although exceedingly rare, improving our knowledge of genetic progeroid syndromes and searching for innovative and efficient therapies in these syndromes is of paramount importance as, even before they can be used to save lives, they may significantly (i) expand the affected childrens' lifespan and preserve their quality of life; (ii) improve our understanding of aging-related disorders and other more common diseases; and (iii) expand our fundamental knowledge of physiological aging and its links with major physiological processes such as those involved in oncogenesis.
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Affiliation(s)
- Pierre Cau
- Aix-Marseille Université, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France; INSERM, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France; AP-HM, Service de Biologie Cellulaire, Hôpital La Timone, 264 Rue Saint Pierre, 13385 Marseille Cedex 5, France.
| | - Claire Navarro
- Aix-Marseille Université, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France; INSERM, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France
| | - Karim Harhouri
- Aix-Marseille Université, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France; INSERM, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France
| | - Patrice Roll
- Aix-Marseille Université, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France; INSERM, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France; AP-HM, Service de Biologie Cellulaire, Hôpital La Timone, 264 Rue Saint Pierre, 13385 Marseille Cedex 5, France
| | - Sabine Sigaudy
- Aix-Marseille Université, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France; INSERM, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France; AP-HM, Département de Génétique Médicale, Hôpital d'enfants Timone, 264 Rue Saint Pierre, 13385 Marseille Cedex 5, France
| | - Elise Kaspi
- Aix-Marseille Université, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France; INSERM, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France; AP-HM, Service de Biologie Cellulaire, Hôpital La Timone, 264 Rue Saint Pierre, 13385 Marseille Cedex 5, France
| | - Sophie Perrin
- Aix-Marseille Université, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France; INSERM, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France
| | - Annachiara De Sandre-Giovannoli
- Aix-Marseille Université, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France; INSERM, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France; AP-HM, Département de Génétique Médicale, Hôpital d'enfants Timone, 264 Rue Saint Pierre, 13385 Marseille Cedex 5, France
| | - Nicolas Lévy
- Aix-Marseille Université, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France; INSERM, UMR_S 910, Génétique Médicale et Génomique Fonctionnelle, Faculté de Médecine, 27 Bd Jean Moulin, 13385 Marseille Cedex 5, France; AP-HM, Département de Génétique Médicale, Hôpital d'enfants Timone, 264 Rue Saint Pierre, 13385 Marseille Cedex 5, France.
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Ferrando J, Mir-Bonafé JM, Cepeda-Valdés R, Domínguez A, Ocampo-Candiani J, García-Veigas J, Gómez-Flores M, Salas-Alanis JC. Further insights in trichothiodistrophy: a clinical, microscopic, and ultrastructural study of 20 cases and literature review. Int J Trichology 2013. [PMID: 23180925 PMCID: PMC3500055 DOI: 10.4103/0974-7753.100075] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND Trichothiodistrophy (TTD) is a rare autosomal recessive condition that is characterized by a specific congenital hair shaft dysplasia caused by deficiency of sulfur associated with a wide spectrum of multisystem abnormalities. In this article, we study clinical, microscopic, and ultrastructural findings of 20 patients with TTD with the aim to add further insights regarding to this rare condition. Additionally, analyses of our results are compared with those extracted from the literature in order to enhance its comprehensibility. MATERIALS AND METHODS TWENTY CASES OF TTD WERE INCLUDED: 7 from Mexico and 14 from Spain. Clinical, microscopic, scanning electron microscopy (SEM) studies and X-ray microanalysis (XrMa) were carried out in all of them. Genetic studies were performed in all seven Mexican cases. Patients with xeroderma pigmentosum and xeroderma pigmentosum/TTD-complex were excluded. RESULTS Cuticular changes and longitudinal crests of the hair shaft were demonstrated. These crests were irregular, disorganized, following the hair longest axis. Hair shaft sulfur deficiency was disposed discontinuously and intermittently rather than uniformly. This severe decrease of sulfur contents was located close to the trichoschisis areas. Only five patients did not show related disturbances. Micro-dolichocephaly was observed in five cases and represented the most frequent facial dysmorphism found. It is also remarkable that all patients with urologic malformations also combined diverse neurologic disorders. Moreover, three Mexican sisters demonstrated the coexistence of scarce pubic vellus hair, developmental delay, onychodystrophy, and maxillar/mandibullar hypoplasia. CONCLUSIONS TTD phenotype has greatly varied from very subtle forms to severe alterations such as neurologic abnormalities, blindness, lamellar ichthyosis and gonadal malformations. Herein, a multisystem study should be performed mandatorily in patients diagnosed with TTD.
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Affiliation(s)
- Juan Ferrando
- Department of Dermatology, Hospital Clinic, Barcelona, Spain
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Affiliation(s)
- Jonathan A. Dyer
- Dermatology and Child Health; University of Missouri; Columbia; Missouri
| | - Mary Spraker
- Dermatology and Child Health; University of Missouri; Columbia; Missouri
| | - Mary Williams
- Dermatology and Child Health; University of Missouri; Columbia; Missouri
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Pehlivan D, Cefle K, Raams A, Ozturk S, Baykal C, Kleijer WJ, Palanduz S, Jaspers NGJ. A Turkish trichothiodystrophy patient with homozygousXPDmutation and genotype-phenotype relationship. J Dermatol 2012; 39:1016-21. [DOI: 10.1111/j.1346-8138.2012.01662.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2012] [Accepted: 07/13/2012] [Indexed: 11/28/2022]
Affiliation(s)
- Davut Pehlivan
- Department of Molecular and Human Genetics; Baylor College of Medicine; Houston; Texas; USA
| | - Kivanc Cefle
- Department of Internal Medicine; Istanbul University; Istanbul; Turkey
| | - Anja Raams
- Department of Genetics; Erasmus Medical Center; Rotterdam; the Netherlands
| | - Sukru Ozturk
- Department of Internal Medicine; Istanbul University; Istanbul; Turkey
| | - Can Baykal
- Department of Dermatology; Istanbul Medical Faculty; Istanbul University; Istanbul; Turkey
| | - Wim J. Kleijer
- Department of Clinical Genetics; Erasmus Medical Center; Rotterdam; the Netherlands
| | - Sukru Palanduz
- Department of Internal Medicine; Istanbul University; Istanbul; Turkey
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Rezvani HR, Ali N, Serrano-Sanchez M, Dubus P, Varon C, Ged C, Pain C, Cario-André M, Seneschal J, Taïeb A, de Verneuil H, Mazurier F. Loss of epidermal hypoxia-inducible factor-1α accelerates epidermal aging and affects re-epithelialization in human and mouse. J Cell Sci 2011; 124:4172-83. [PMID: 22193962 DOI: 10.1242/jcs.082370] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2023] Open
Abstract
In mouse and human skin, HIF-1α is constitutively expressed in the epidermis, mainly in the basal layer. HIF-1α has been shown to have crucial systemic functions: regulation of kidney erythropoietin production in mice with constitutive HIF-1α epidermal deletion, and hypervascularity following epidermal HIF-1α overexpression. However, its local role in keratinocyte physiology has not been clearly defined. To address the function of HIF-1α in the epidermis, we used the mouse model of HIF-1α knockout targeted to keratinocytes (K14-Cre/Hif1a(flox/flox)). These mice had a delayed skin phenotype characterized by skin atrophy and pruritic inflammation, partly mediated by basement membrane disturbances involving laminin-332 (Ln-332) and integrins. We also investigated the relevance of results of studies in mice to human skin using reconstructed epidermis and showed that HIF-1α knockdown in human keratinocytes impairs the formation of a viable reconstructed epidermis. A diminution of keratinocyte growth potential, following HIF-1α silencing, was associated with a decreased expression of Ln-322 and α6 integrin and β1 integrin. Overall, these results indicate a role of HIF-1α in skin homeostasis especially during epidermal aging.
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Affiliation(s)
- Hamid Reza Rezvani
- INSERM, Biothérapies des maladies génétiques et cancers, U1035, 146 rue Léo Saignat, Bordeaux, F-33000 France
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Rezvani HR, Ali N, Nissen LJ, Harfouche G, de Verneuil H, Taïeb A, Mazurier F. HIF-1α in epidermis: oxygen sensing, cutaneous angiogenesis, cancer, and non-cancer disorders. J Invest Dermatol 2011; 131:1793-805. [PMID: 21633368 DOI: 10.1038/jid.2011.141] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Besides lung, postnatal human epidermis is the only epithelium in direct contact with atmospheric oxygen. Skin epidermal oxygenation occurs mostly through atmospheric oxygen rather than tissue vasculature, resulting in a mildly hypoxic microenvironment that favors increased expression of hypoxia-inducible factor-1α (HIF-1α). Considering the wide spectrum of biological processes, such as angiogenesis, inflammation, bioenergetics, proliferation, motility, and apoptosis, that are regulated by this transcription factor, its high expression level in the epidermis might be important to HIF-1α in skin physiology and pathophysiology. Here, we review the role of HIF-1α in cutaneous angiogenesis, skin tumorigenesis, and several skin disorders.
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Revised nomenclature and classification of inherited ichthyoses: results of the First Ichthyosis Consensus Conference in Sorèze 2009. J Am Acad Dermatol 2010; 63:607-41. [PMID: 20643494 DOI: 10.1016/j.jaad.2009.11.020] [Citation(s) in RCA: 440] [Impact Index Per Article: 31.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2009] [Revised: 10/30/2009] [Accepted: 11/17/2009] [Indexed: 12/21/2022]
Abstract
BACKGROUND Inherited ichthyoses belong to a large, clinically and etiologically heterogeneous group of mendelian disorders of cornification, typically involving the entire integument. Over the recent years, much progress has been made defining their molecular causes. However, there is no internationally accepted classification and terminology. OBJECTIVE We sought to establish a consensus for the nomenclature and classification of inherited ichthyoses. METHODS The classification project started at the First World Conference on Ichthyosis in 2007. A large international network of expert clinicians, skin pathologists, and geneticists entertained an interactive dialogue over 2 years, eventually leading to the First Ichthyosis Consensus Conference held in Sorèze, France, on January 23 and 24, 2009, where subcommittees on different issues proposed terminology that was debated until consensus was reached. RESULTS It was agreed that currently the nosology should remain clinically based. "Syndromic" versus "nonsyndromic" forms provide a useful major subdivision. Several clinical terms and controversial disease names have been redefined: eg, the group caused by keratin mutations is referred to by the umbrella term, "keratinopathic ichthyosis"-under which are included epidermolytic ichthyosis, superficial epidermolytic ichthyosis, and ichthyosis Curth-Macklin. "Autosomal recessive congenital ichthyosis" is proposed as an umbrella term for the harlequin ichthyosis, lamellar ichthyosis, and the congenital ichthyosiform erythroderma group. LIMITATIONS As more becomes known about these diseases in the future, modifications will be needed. CONCLUSION We have achieved an international consensus for the classification of inherited ichthyosis that should be useful for all clinicians and can serve as reference point for future research.
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Rezvani HR, Mazurier F, Morice-Picard F, Jouary T, Cario-André M, Ged C, de Verneuil H, Taïeb A. Xeroderma pigmentosum: clues to understanding cancer initiation. DERMATOL SIN 2010. [DOI: 10.1016/s1027-8117(10)60021-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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