1
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Chen ZX, Jia WN, Sun Y, Jiang YX. Genotype-phenotype profile of global ASPH-associated ectopia lentis and clinical findings from a Chinese cohort. Gene 2024; 925:148600. [PMID: 38788814 DOI: 10.1016/j.gene.2024.148600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 05/01/2024] [Accepted: 05/20/2024] [Indexed: 05/26/2024]
Abstract
BACKGROUND Traboulsi syndrome is an under-recognized syndromic form of ectopia lentis (EL) caused by the aspartate beta-Hydroxylase (ASPH) variant. The genotype-phenotype profile of ASPH-associated disease is poorly understood due to the rarity of the condition. METHODS We conducted targeted next-generation sequencing and bioinformatics analysis to identify potentially pathogenic ASPH variants in the cohort. Furthermore, we characterized the expression pattern of ASPH and major components of the zonules using single-cell RNA-sequencing (scRNA-seq) and evaluated the genotype-phenotype correlations by combining our data and those from the literature. RESULTS We identified a novel missense variant c.2075G > A (p.G692D) and a recurrent nonsense variant c.1126C > G (p.R376*) of ASPH in two pedigrees from a Chinese cohort of EL. Both probands were 5-year-old boys with canonical facial dysmorphisms and bilateral anteriorly-dislocated lenses. Other ocular comorbidities included microspherophakia, shallow anterior chamber, and narrow chamber angel. No cardiac involvements or filtering blebs were identified. The single-cell expression atlas of ciliary epithelium demonstrated the coexpression of ASPH with FBN1, FBN2, and LTBP2 in the non-pigmented ciliary epithelium cells. Furthermore, molecular modeling simulation of p.G692D revealed increased affinity to the cb EGF-like domain and a subsequent destabilized calcium-binding motif. The genotype-phenotype analysis demonstrated that patients with cardiac involvements all harbored biallelic truncation variants. CONCLUSIONS The data from this study provide new insights into the genotype-phenotype profile of ASPH-associated disease and implicate the potential role of ASPH in the pathogenesis of EL.
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Affiliation(s)
- Ze-Xu Chen
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai 200031, China; NHC Key Laboratory of Myopia (Fudan University), Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai 200031, China; Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai 200031, China
| | - Wan-Nan Jia
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai 200031, China; NHC Key Laboratory of Myopia (Fudan University), Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai 200031, China; Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai 200031, China
| | - Yang Sun
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai 200031, China; NHC Key Laboratory of Myopia (Fudan University), Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai 200031, China; Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai 200031, China
| | - Yong-Xiang Jiang
- Eye Institute and Department of Ophthalmology, Eye & ENT Hospital, Fudan University, Shanghai 200031, China; NHC Key Laboratory of Myopia (Fudan University), Key Laboratory of Myopia, Chinese Academy of Medical Sciences, Shanghai 200031, China; Shanghai Key Laboratory of Visual Impairment and Restoration, Shanghai 200031, China.
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2
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Homolak J, Kodvanj I. Possible marfanoid habitus of Cesare Alessandro Scaglia di Verrua evidenced in portraits of Sir Anthony van Dyck? Am J Med Genet A 2022; 188:3569-3572. [PMID: 36129302 DOI: 10.1002/ajmg.a.62975] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 08/22/2022] [Accepted: 08/27/2022] [Indexed: 01/31/2023]
Affiliation(s)
- Jan Homolak
- Department of Pharmacology, University of Zagreb School of Medicine, Zagreb, Croatia.,Croatian Institute for Brain Research, University of Zagreb School of Medicine, Zagreb, Croatia
| | - Ivan Kodvanj
- Division of Gastroenterology, Department of Internal Medicine, University Hospital Centre Zagreb, Zagreb, Croatia
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3
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Wozniak-Mielczarek L, Osowicka M, Radtke-Lysek A, Drezek-Nojowicz M, Gilis-Malinowska N, Sabiniewicz A, Mielczarek M, Sabiniewicz R. How to Distinguish Marfan Syndrome from Marfanoid Habitus in a Physical Examination-Comparison of External Features in Patients with Marfan Syndrome and Marfanoid Habitus. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:772. [PMID: 35055593 PMCID: PMC8775541 DOI: 10.3390/ijerph19020772] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Revised: 01/02/2022] [Accepted: 01/04/2022] [Indexed: 01/16/2023]
Abstract
Marfan Syndrome (MFS) is a systemic disorder caused by mutations in fibrillin-1. The most common cause of mortality in MFS is dissection and rupture of the aorta. Due to a highly variable and age-dependent clinical spectrum, the diagnosis of MFS still remains sophisticated. The aim of the study was to determine if there exist phenotypic features that can play the role of "red flags" in cases of MFS suspicion. The study population included 306 patients (199 children and 107 adults) who were referred to the Department of Pediatric Cardiology due to suspicion of MFS. All patients underwent complete clinical evaluation in order to confirm the diagnosis of MFS according to the modified Ghent criteria. MFS was diagnosed in 109 patients and marfanoid habitus in 168 patients. The study excluded 29 patients with other hereditary thoracic aneurysm syndromes. Comparative analysis between patients with Marfan syndrome and marfanoid habitus was performed. Symptoms with high prevalence and high positive likelihood ratio were identified (pectus carinatum, reduced elbow extension, hindfoot deformity, gothic palate, downslanting palpebral fissures, lens subluxation, myopia ≥ 3 dioptres remarkably high stature). The differentiation between patients with MFS and marfanoid body habitus is not possible by only assessing external body features; however, "red flags" could be helpful in the screening phase.
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Affiliation(s)
- Lidia Wozniak-Mielczarek
- Department of Pediatric Cardiology and Congenital Heart Defects, Medical University of Gdansk, 80-210 Gdansk, Poland;
| | - Michalina Osowicka
- Department of History of Medicine, Medical University of Warsaw, 02-091 Warsaw, Poland;
| | - Alicja Radtke-Lysek
- 1st Department of Cardiology, Medical University of Gdansk, 80-210 Gdansk, Poland; (A.R.-L.); (N.G.-M.); (M.M.)
| | | | - Natasza Gilis-Malinowska
- 1st Department of Cardiology, Medical University of Gdansk, 80-210 Gdansk, Poland; (A.R.-L.); (N.G.-M.); (M.M.)
| | - Anna Sabiniewicz
- Students’ Scientific Circle of the Department of Pediatric Cardiology and Congenital Heart Diseases, Medical University of Gdansk, 80-210 Gdansk, Poland;
| | - Maksymilian Mielczarek
- 1st Department of Cardiology, Medical University of Gdansk, 80-210 Gdansk, Poland; (A.R.-L.); (N.G.-M.); (M.M.)
| | - Robert Sabiniewicz
- Department of Pediatric Cardiology and Congenital Heart Defects, Medical University of Gdansk, 80-210 Gdansk, Poland;
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4
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Billar RJ, Manoubi W, Kant SG, Wijnen RMH, Demirdas S, Schnater JM. Association between pectus excavatum and congenital genetic disorders: A systematic review and practical guide for the treating physician. J Pediatr Surg 2021; 56:2239-2252. [PMID: 34039477 DOI: 10.1016/j.jpedsurg.2021.04.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 04/13/2021] [Accepted: 04/18/2021] [Indexed: 10/21/2022]
Abstract
BACKGROUND Pectus excavatum (PE) could be part of a genetic disorder, which then has implications regarding comorbidity, the surgical correction of PE, and reproductive choices. However, referral of a patient presenting with PE for genetic analysis is often delayed because additional crucial clinical signs may be subtle or even missed in syndromic patients. We reviewed the literature to inventory known genetic disorders associated with PE and create a standardized protocol for clinical evaluation. METHODS A systematic literature search was performed in electronic databases. Genetic disorders were considered associated with PE if studies reported at least five cases with PE. Characteristics of each genetic disorder were extracted from the literature and the OMIM database in order to create a practical guide for the clinician. RESULTS After removal of duplicates from the initial search, 1632 citations remained. Eventually, we included 119 full text articles, representing 20 different genetic disorders. Relevant characteristics and important clinical signs of each genetic disorder were summarized providing a standardized protocol in the form of a scoring list. The most important clinical sign was a positive family history for PE and/or congenital heart defect. CONCLUSIONS Twenty unique genetic disorders have been found associated with PE. We have created a scoring list for the clinician that systematically evaluates crucial clinical signs, thereby facilitating decision making for referral to a clinical geneticist.
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Affiliation(s)
- Ryan J Billar
- Erasmus University Medical Center - Sophia Children's Hospital, department of Paediatric Surgery Rotterdam, Netherlands
| | - Wiem Manoubi
- Erasmus University Medical Centre, department of Neuroscience, Rotterdam, Netherlands
| | - Sarina G Kant
- Erasmus University Medical Centre, department of Clinical Genetics, Rotterdam, Netherlands
| | - René M H Wijnen
- Erasmus University Medical Center - Sophia Children's Hospital, department of Paediatric Surgery Rotterdam, Netherlands
| | - Serwet Demirdas
- Erasmus University Medical Centre, department of Clinical Genetics, Rotterdam, Netherlands
| | - Johannes M Schnater
- Erasmus University Medical Center - Sophia Children's Hospital, department of Paediatric Surgery Rotterdam, Netherlands.
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5
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Pollock L, Ridout A, Teh J, Nnadi C, Stavroulias D, Pitcher A, Blair E, Wordsworth P, Vincent TL. The Musculoskeletal Manifestations of Marfan Syndrome: Diagnosis, Impact, and Management. Curr Rheumatol Rep 2021; 23:81. [PMID: 34825999 PMCID: PMC8626407 DOI: 10.1007/s11926-021-01045-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/20/2021] [Indexed: 11/29/2022]
Abstract
Purpose of Review
Marfan syndrome (MFS) is an autosomal dominant heritable disorder of fibrillin-1 (FBN1) with predominantly ocular, cardiovascular, and musculoskeletal manifestations that has a population prevalence of approximately 1 in 5–10,000 (Chiu et al. Mayo Clin Proc. 89(1):34–42, 146, Dietz 3, Loeys et al. J Med Genet. 47(7):476–85, 4). Recent Findings The vascular complications of MFS still pose the greatest threat, but effective management options, such as regular cardiac monitoring and elective surgical intervention, have reduced the risk of life-threatening cardiovascular events, such as aortic dissection. Although cardiovascular morbidity and mortality remains high, these improvements in cardiovascular management have extended the life expectancy of those with MFS by perhaps 30–50 years from an estimated mean of 32 years in 1972 (Dietz 3, Gott et al. Eur J Cardio-thoracic Surg. 10(3):149–58, 147, Murdoch et al. N Engl J Med. 286(15):804–8, 148). The musculoskeletal manifestations of MFS, which to date have received less attention, can also have a significant impact on the quality of life and are likely to become more important as the age of the Marfan syndrome population increases (Hasan et al. Int J Clin Pract. 61(8):1308–1320, 127). In addition, musculoskeletal manifestations are often critically important in the diagnosis of MFS. Summary Here, we review the main clinically relevant and diagnostically useful musculoskeletal features of MFS, which together contribute to the “systemic features score” (referred to hereafter as systemic score), part of the revised Ghent nosology for MFS. We discuss current treatment strategies and highlight the need for a multidisciplinary approach to diagnosis and management. Finally, we review new pharmacological approaches that may be disease modifying and could help to improve the outcome for individuals with this syndrome.
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Affiliation(s)
- Lily Pollock
- Kennedy Institute of Rheumatology, NDORMS, University of Oxford, Oxford, UK
| | - Ashley Ridout
- Department of Rheumatology, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - James Teh
- Department of Radiology, Oxford University Hospitals NHS Foundation Trust, Oxford, England, UK
| | - Colin Nnadi
- Department of Surgery, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | | | - Alex Pitcher
- Department of Cardiology, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Edward Blair
- Department of Clinical Genetics, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Paul Wordsworth
- Department of Rheumatology, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Tonia L Vincent
- Kennedy Institute of Rheumatology, NDORMS, University of Oxford, Oxford, UK. .,Department of Rheumatology, Oxford University Hospitals NHS Foundation Trust, Oxford, UK.
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6
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Abstract
Orthopaedic surgeons are sometimes the first specialists encountered by patients with inherited conditions that predispose them to aneurysms. The skeletal features are evident, but the aneurysm is silent. Early recognition of the conditions associated with aneurysms can lead to effective treatment and minimize risks of morbidity and death. Marfan syndrome is characterized by abnormal fibrillin-1 protein and has a broad range of skeletal manifestations, including scoliosis, hindfoot deformity, arachnodactyly, pectus excavatum or carinatum deformity, dural ectasia, and acetabular protrusio. Aneurysm-associated complications are the leading cause of early morbidity and death in patients with Marfan syndrome. Ehlers-Danlos syndrome is caused by a disturbance in collagen biosynthesis most commonly resulting in joint hypermobility and skin abnormalities. Among the types of Ehlers-Danlos syndrome, vascular Ehlers-Danlos syndrome presents the highest risk of vascular complications. Clubfoot and joint dislocations are common presenting symptoms in vascular Ehlers-Danlos syndrome. Loeys-Dietz syndrome is a connective tissue disorder resulting in aortic root dilation and several skeletal manifestations, including scoliosis, cervical malformations, joint contractures, and foot deformities.
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Affiliation(s)
- Majd Marrache
- Department of Orthopaedic Surgery, The Johns Hopkins University, Baltimore, Maryland
| | - Peter H Byers
- Departments of Pathology and Medicine (Medical Genetics), University of Washington, Seattle, Washington
| | - Paul D Sponseller
- Department of Orthopaedic Surgery, The Johns Hopkins University, Baltimore, Maryland
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7
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von Kodolitsch Y, Demolder A, Girdauskas E, Kaemmerer H, Kornhuber K, Muino Mosquera L, Morris S, Neptune E, Pyeritz R, Rand-Hendriksen S, Rahman A, Riise N, Robert L, Staufenbiel I, Szöcs K, Vanem TT, Linke SJ, Vogler M, Yetman A, De Backer J. Features of Marfan syndrome not listed in the Ghent nosology – the dark side of the disease. Expert Rev Cardiovasc Ther 2020; 17:883-915. [DOI: 10.1080/14779072.2019.1704625] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Yskert von Kodolitsch
- German Aorta Center Hamburg at University Hospital Hamburg Eppendorf University Heart Centre, Clinics for Cardiology and Heart Surgery, VASCERN HTAD European Reference Centre
| | - Anthony Demolder
- Center for Medical Genetics and Department of Cardiology, Ghent University Hospital, VASCERN HTAD European Reference Centre, Ghent, Belgium
| | - Evaldas Girdauskas
- German Aorta Center Hamburg at University Hospital Hamburg Eppendorf University Heart Centre, Clinics for Cardiology and Heart Surgery, VASCERN HTAD European Reference Centre
| | - Harald Kaemmerer
- Department of Pediatric Cardiology and Congenital Heart Disease, German Heart Centre Munich of the Free State of Bavaria, Munich
| | - Katharina Kornhuber
- Department of Pediatric Cardiology and Congenital Heart Disease, German Heart Centre Munich of the Free State of Bavaria, Munich
| | - Laura Muino Mosquera
- Department of Pediatric Cardiology and Center for Medical Genetics, Ghent University Hospital, Ghent, Belgium
| | - Shaine Morris
- Department of Pediatrics-Cardiology, Texas Children’s Hospital/Baylor College of Medicine, Houston, TX, USA
| | - Enid Neptune
- Division of Pulmonary and Critical Care Medicine and Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Reed Pyeritz
- Departments of Medicine and Genetics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - Svend Rand-Hendriksen
- TRS, National Resource Centre for Rare Disorders, Sunnaas Rehabilitation Hospital, Nesoddtangen, Norway
| | - Alexander Rahman
- Department of Conservative Dentistry, Periodontology and Preventive Dentistry, Hannover Medical School, Hannover
| | - Nina Riise
- TRS, National Resource Centre for Rare Disorders, Sunnaas Rehabilitation Hospital, Nesoddtangen, Norway
| | - Leema Robert
- Department of Clinical Genetics, Guy’s and St Thomas’ NHS Foundation Trust, London, UK
| | - Ingmar Staufenbiel
- Department of Conservative Dentistry, Periodontology and Preventive Dentistry, Hannover Medical School, Hannover
| | - Katalin Szöcs
- German Aorta Center Hamburg at University Hospital Hamburg Eppendorf University Heart Centre, Clinics for Cardiology and Heart Surgery, VASCERN HTAD European Reference Centre
| | - Thy Thy Vanem
- TRS, National Resource Centre for Rare Disorders, Sunnaas Rehabilitation Hospital, Nesoddtangen, Norway
- Department of Physical Medicine and Rehabilitation, Oslo University Hospital, Oslo, Norway
| | - Stephan J. Linke
- Clinic of Ophthalmology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- Ophthalmological practice at the University Clinic Hamburg-Eppendorf, zentrumsehstärke, Hamburg, Germany
| | - Marina Vogler
- German Marfan Association, Marfan Hilfe Deutschland e.V, Eutin, Germany
| | - Anji Yetman
- Vascular Medicine, Children’s Hospital and Medical Center, Omaha, USA
| | - Julie De Backer
- Center for Medical Genetics and Department of Cardiology, Ghent University Hospital, VASCERN HTAD European Reference Centre, Ghent, Belgium
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8
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Johnson CM, Spruiell B, Wiesen C, Pimenta LA, Vann W, Frazier‐Bowers SA. Craniofacial characterization of Marfan Syndrome. Orthod Craniofac Res 2019; 22 Suppl 1:56-61. [DOI: 10.1111/ocr.12295] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Accepted: 01/21/2019] [Indexed: 11/30/2022]
Affiliation(s)
- Christian M. Johnson
- Department of OrthodonticsThe University of North Carolina at Chapel Hill Chapel Hill North Carolina
| | - Brittany Spruiell
- Department of OrthodonticsTexas A and M University College of Dentistry Dallas Texas
| | - Chris Wiesen
- The Odum InstituteUniversity of North Carolina at Chapel Hill Chapel Hill North Carolina
| | - Luiz A. Pimenta
- Department of Dental EcologyUNC Craniofacial CenterThe University of North Carolina at Chapel Hill Chapel Hill North Carolina
| | - William Vann
- Department of Pediatric DentistryThe University of North Carolina at Chapel Hill Chapel Hill North Carolina
| | - Sylvia A. Frazier‐Bowers
- Department of OrthodonticsThe University of North Carolina at Chapel Hill Chapel Hill North Carolina
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9
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Marques P, Korbonits M. Pseudoacromegaly. Front Neuroendocrinol 2019; 52:113-143. [PMID: 30448536 DOI: 10.1016/j.yfrne.2018.11.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 10/30/2018] [Accepted: 11/14/2018] [Indexed: 01/19/2023]
Abstract
Individuals with acromegaloid physical appearance or tall stature may be referred to endocrinologists to exclude growth hormone (GH) excess. While some of these subjects could be healthy individuals with normal variants of growth or physical traits, others will have acromegaly or pituitary gigantism, which are, in general, straightforward diagnoses upon assessment of the GH/IGF-1 axis. However, some patients with physical features resembling acromegaly - usually affecting the face and extremities -, or gigantism - accelerated growth/tall stature - will have no abnormalities in the GH axis. This scenario is termed pseudoacromegaly, and its correct diagnosis can be challenging due to the rarity and variability of these conditions, as well as due to significant overlap in their characteristics. In this review we aim to provide a comprehensive overview of pseudoacromegaly conditions, highlighting their similarities and differences with acromegaly and pituitary gigantism, to aid physicians with the diagnosis of patients with pseudoacromegaly.
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Affiliation(s)
- Pedro Marques
- Centre for Endocrinology, William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK
| | - Márta Korbonits
- Centre for Endocrinology, William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK.
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10
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Vorravanpreecha N, Lertboonnum T, Rodjanadit R, Sriplienchan P, Rojnueangnit K. Studying Down syndrome recognition probabilities in Thai children with de‐identified computer‐aided facial analysis. Am J Med Genet A 2018; 176:1935-1940. [DOI: 10.1002/ajmg.a.40483] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 06/05/2018] [Accepted: 06/28/2018] [Indexed: 01/24/2023]
Affiliation(s)
| | | | | | | | - Kitiwan Rojnueangnit
- Pediatric Department, Faculty of MedicineThammasat University Pathumthani Thailand
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11
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Chen M, Yao B, Yang Q, Deng J, Song Y, Sui T, Zhou L, Yao H, Xu Y, Ouyang H, Pang D, Li Z, Lai L. Truncated C-terminus of fibrillin-1 induces Marfanoid-progeroid-lipodystrophy (MPL) syndrome in rabbit. Dis Model Mech 2018; 11:dmm.031542. [PMID: 29666143 PMCID: PMC5963856 DOI: 10.1242/dmm.031542] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Accepted: 03/05/2018] [Indexed: 12/12/2022] Open
Abstract
Various clinical differences have been observed between patients with the FBN1 gene mutation and those with the classical Marfan phenotype. Although FBN1 knockout (KO) or dominant-negative mutant mice are widely used as an animal model for Marfan syndrome (MFS), these mice cannot recapitulate the genotype/phenotype relationship of Marfanoid-progeroid-lipodystrophy (MPL) syndrome, which is caused by a mutation in the C-terminus of fibrillin-1, the penultimate exon of the FBN1 gene. Here, we describe the generation of a rabbit MPL model with C-terminal truncation of fibrillin-1 using a CRISPR/Cas9 system. FBN1 heterozygous (FBN1 Het) rabbits faithfully recapitulated the phenotypes of MFS, including muscle wasting and impaired connective tissue, ocular syndrome and aortic dilation. Moreover, skin symptoms, lipodystrophy, growth retardation and dysglycemia were also seen in these FBN1 Het rabbits, and have not been reported in other animal models. In conclusion, this novel rabbit model mimics the histopathological changes and functional defects of MPL syndrome, and could become a valuable model for studies of pathogenesis and drug screening for MPL syndrome. Summary: A novel genetically engineered rabbit model of MPL syndrome, generated by CRISPR/Cas9-mediated mutation of FBN1, mimics the histopathological changes and functional defects of MPL syndrome seen in the clinic.
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Affiliation(s)
- Mao Chen
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, Jilin University, Changchun 130062, China
| | - Bing Yao
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, Jilin University, Changchun 130062, China
| | - Qiangbing Yang
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, Jilin University, Changchun 130062, China
| | - Jichao Deng
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, Jilin University, Changchun 130062, China
| | - Yuning Song
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, Jilin University, Changchun 130062, China
| | - Tingting Sui
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, Jilin University, Changchun 130062, China
| | - Lina Zhou
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, Jilin University, Changchun 130062, China
| | - HaoBing Yao
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, Jilin University, Changchun 130062, China
| | - Yuanyuan Xu
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, Jilin University, Changchun 130062, China
| | - Hongsheng Ouyang
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, Jilin University, Changchun 130062, China
| | - Daxin Pang
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, Jilin University, Changchun 130062, China
| | - Zhanjun Li
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, Jilin University, Changchun 130062, China
| | - Liangxue Lai
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, Jilin University, Changchun 130062, China .,Key Laboratory of Regenerative Biology, Chinese Academy of Sciences, and Guangdong Provincial Key Laboratory of Stem Cells and Regenerative Medicine, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, Guangdong 510530, China
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12
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Dolci C, Pucciarelli V, Gibelli DM, Codari M, Marelli S, Trifirò G, Pini A, Sforza C. The face in marfan syndrome: A 3D quantitative approach for a better definition of dysmorphic features. Clin Anat 2017; 31:380-386. [DOI: 10.1002/ca.23034] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Revised: 11/05/2017] [Accepted: 12/07/2017] [Indexed: 01/30/2023]
Affiliation(s)
- Claudia Dolci
- Dipartimento di Scienze Biomediche per la SaluteUniversità degli Studi di MilanoMilano Italy
| | - Valentina Pucciarelli
- Dipartimento di Scienze Biomediche per la SaluteUniversità degli Studi di MilanoMilano Italy
| | - Daniele M. Gibelli
- Dipartimento di Scienze Biomediche per la SaluteUniversità degli Studi di MilanoMilano Italy
| | - Marina Codari
- Unità of Radiologia, IRCCS Policlinico San Donato, San Donato MilaneseMilano Italy
| | - Susan Marelli
- Centro Malattie Rare, Marfan Clinic, U.O. Cardiologia, ASST Fatebenefratelli‐SaccoMilano Italy
| | | | - Alessandro Pini
- Centro Malattie Rare, Marfan Clinic, U.O. Cardiologia, ASST Fatebenefratelli‐SaccoMilano Italy
| | - Chiarella Sforza
- Dipartimento di Scienze Biomediche per la SaluteUniversità degli Studi di MilanoMilano Italy
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13
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Sinha A, Kaur S, Raheel SA, Kaur K, Alshehri M, Kujan O. Oral manifestations of a rare variant of Marfan syndrome. Clin Case Rep 2017; 5:1429-1434. [PMID: 28878896 PMCID: PMC5582241 DOI: 10.1002/ccr3.1058] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Revised: 04/18/2017] [Accepted: 06/02/2017] [Indexed: 01/20/2023] Open
Abstract
This article reports the oral manifestations of an unusual presentation of Marfan syndrome (MFS) and provides an evidence to the importance of recognizing the oral features in confirming the diagnosis of MFS. Dentists have a vital role in confirming the diagnosis of developmental disorders that involve the craniofacial compendium.
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Affiliation(s)
- Abhishek Sinha
- Department of Orthodontics Hazaribag College of Dental Sciences and Hospital Hazaribag Jharkhand India
| | - Sandeep Kaur
- Department of Oral Medicine & Radiology Indira Gandhi Government Dental College & Hospital Jammu Jammu and Kashmir India
| | - Syed Ahmed Raheel
- Department of Oral Medicine & Diagnostic sciences Al-Farabi College for Dentistry and Nursing Al-Farabi Colleges Riyadh Saudi Arabia
| | - Kirandeep Kaur
- Department of Periodontology Institute of Dental Studies & Technologies Modi Nagar Uttar Pradesh India
| | - Mohammed Alshehri
- Dental Department King Khaled University Hospital King Saud University Riyadh Saudi Arabia
| | - Omar Kujan
- Department of Oral Medicine & Diagnostic sciences Al-Farabi College for Dentistry and Nursing Al-Farabi Colleges Riyadh Saudi Arabia.,School of Dentistry The University of Western Australia Nedlands Western Australia Australia
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Abstract
Marfan syndrome is a systemic, heritable connective tissue disorder that affects many different organ systems and is best managed by using a multidisciplinary approach. The guidance in this report is designed to assist the pediatrician in recognizing the features of Marfan syndrome as well as caring for the individual with this disorder.
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