1
|
Justel M, Jou C, Sariego-Jamardo A, Juliá-Palacios NA, Ortez C, Poch ML, Hedrera-Fernandez A, Gomez-Martin H, Codina A, Dominguez-Carral J, Muxart J, Hernández-Laín A, Vila-Bedmar S, Zulaica M, Cancho-Candela R, Castro MDC, de la Osa-Langreo A, Peña-Valenceja A, Marcos-Vadillo E, Prieto-Matos P, Pascual-Pascual SI, López de Munain A, Camacho A, Estevez-Arias B, Musokhranova U, Olivella M, Oyarzábal A, Jimenez-Mallebrera C, Domínguez-González C, Nascimento A, García-Cazorla À, Natera-de Benito D. Expanding the phenotypic spectrum of TRAPPC11-related muscular dystrophy: 25 Roma individuals carrying a founder variant. J Med Genet 2023; 60:965-973. [PMID: 37197784 PMCID: PMC10579479 DOI: 10.1136/jmg-2022-109132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 03/28/2023] [Indexed: 05/19/2023]
Abstract
BACKGROUND Limb-girdle muscular dystrophies (LGMD) are a heterogeneous group of genetically determined muscle disorders. TRAPPC11-related LGMD is an autosomal-recessive condition characterised by muscle weakness and intellectual disability. METHODS A clinical and histopathological characterisation of 25 Roma individuals with LGMD R18 caused by the homozygous TRAPPC11 c.1287+5G>A variant is reported. Functional effects of the variant on mitochondrial function were investigated. RESULTS The c.1287+5G>A variant leads to a phenotype characterised by early onset muscle weakness, movement disorder, intellectual disability and elevated serum creatine kinase, which is similar to other series. As novel clinical findings, we found that microcephaly is almost universal and that infections in the first years of life seem to act as triggers for a psychomotor regression and onset of seizures in several individuals with TRAPPC11 variants, who showed pseudometabolic crises triggered by infections. Our functional studies expanded the role of TRAPPC11 deficiency in mitochondrial function, as a decreased mitochondrial ATP production capacity and alterations in the mitochondrial network architecture were detected. CONCLUSION We provide a comprehensive phenotypic characterisation of the pathogenic variant TRAPPC11 c.1287+5G>A, which is founder in the Roma population. Our observations indicate that some typical features of golgipathies, such as microcephaly and clinical decompensation associated with infections, are prevalent in individuals with LGMD R18.
Collapse
Affiliation(s)
- Maria Justel
- Neuromuscular Unit, Department of Neurology, Hospital Sant Joan de Déu, Barcelona, Spain
- Department of Paediatrics, Complejo asistencial de Salamanca, Salamanca, Spain
| | - Cristina Jou
- Applied Research in Neuromuscular Diseases, Sant Joan de Deu Research Institute, Barcelona, Spain
- Centre for Biomedical Network Research on Rare Diseases (CIBERER), Instituto de Salud Carlos III, Madrid, Spain
- Department of Pathology, Hospital Sant Joan de Déu, Barcelona, Spain
| | - Andrea Sariego-Jamardo
- Paediatric Neurology Unit, Hospital Universitario Marques de Valdecilla, Santander, Spain
| | - Natalia Alexandra Juliá-Palacios
- Neurometabolic Unit and Synaptic Metabolism Lab, Departments of Neurology, IPR (Institut Pediàtric de Recerca), CIBERER and MetabERN, Hospital Sant Joan de Déu, Barcelona, Spain
| | - Carlos Ortez
- Neuromuscular Unit, Department of Neurology, Hospital Sant Joan de Déu, Barcelona, Spain
- Applied Research in Neuromuscular Diseases, Sant Joan de Deu Research Institute, Barcelona, Spain
| | | | | | - Hilario Gomez-Martin
- Department of Paediatrics, Complejo Asistencial Universitario de Salamanca, Salamanca, Spain
| | - Anna Codina
- Applied Research in Neuromuscular Diseases, Sant Joan de Deu Research Institute, Barcelona, Spain
| | - Jana Dominguez-Carral
- Unit of Epilepsy, Sleep and Neurophysiology, Department of Neurology, Hospital Sant Joan de Déu, Barcelona, Spain
| | - Jordi Muxart
- Department of Radiology, Hospital Sant Joan de Déu, Barcelona, Spain
| | | | - Sara Vila-Bedmar
- Neuromuscular Unit, Department of Neurology, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Miren Zulaica
- Biodonostia, Neurosciences Area, Neuromuscular Diseases Laboratory, Hospital Universitario de Donostia, San Sebastian, Spain
| | - Ramon Cancho-Candela
- Paediatric Neurology Unit, Hospital Universitario Rio Hortega de Valladolid, Valladolid, Spain
| | | | | | | | - Elena Marcos-Vadillo
- Department of Clinical Biochemistry, Complejo Asistencial Universitario de Salamanca, Salamanca, Spain
| | - Pablo Prieto-Matos
- Department of Paediatrics, Complejo asistencial de Salamanca, Salamanca, Spain
| | | | - Adolfo López de Munain
- Biodonostia, Neurosciences Area, Neuromuscular Diseases Laboratory, Hospital Universitario de Donostia, San Sebastian, Spain
| | - Ana Camacho
- Paediatric Neurology Unit, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Berta Estevez-Arias
- Neuromuscular Unit, Department of Neurology, Hospital Sant Joan de Déu, Barcelona, Spain
- Laboratory of Neurogenetics and Molecular Medicine-IPER, Sant Joan de Deu Research Institute, Barcelona, Spain
| | - Uliana Musokhranova
- Neurometabolic Unit and Synaptic Metabolism Lab, Departments of Neurology, IPR (Institut Pediàtric de Recerca), CIBERER and MetabERN, Hospital Sant Joan de Déu, Barcelona, Spain
| | - Mireia Olivella
- Biosciences Department, Faculty of Sciences, Technology and Engineering, Universitat de Vic-Universitat Central de Catalunya, Vic, Spain
| | - Alfonso Oyarzábal
- Neurometabolic Unit and Synaptic Metabolism Lab, Departments of Neurology, IPR (Institut Pediàtric de Recerca), CIBERER and MetabERN, Hospital Sant Joan de Déu, Barcelona, Spain
| | - Cecilia Jimenez-Mallebrera
- Applied Research in Neuromuscular Diseases, Sant Joan de Deu Research Institute, Barcelona, Spain
- Centre for Biomedical Network Research on Rare Diseases (CIBERER), Instituto de Salud Carlos III, Madrid, Spain
- Department of Genetics, Microbiology and Statistics, University of Barcelona, Barcelona, Spain
| | - Cristina Domínguez-González
- Centre for Biomedical Network Research on Rare Diseases (CIBERER), Instituto de Salud Carlos III, Madrid, Spain
- Neuromuscular Unit, Department of Neurology, Hospital Universitario 12 de Octubre, Madrid, Spain
| | - Andrés Nascimento
- Neuromuscular Unit, Department of Neurology, Hospital Sant Joan de Déu, Barcelona, Spain
- Applied Research in Neuromuscular Diseases, Sant Joan de Deu Research Institute, Barcelona, Spain
- Centre for Biomedical Network Research on Rare Diseases (CIBERER), Instituto de Salud Carlos III, Madrid, Spain
| | - Àngels García-Cazorla
- Neurometabolic Unit and Synaptic Metabolism Lab, Departments of Neurology, IPR (Institut Pediàtric de Recerca), CIBERER and MetabERN, Hospital Sant Joan de Déu, Barcelona, Spain
| | - Daniel Natera-de Benito
- Neuromuscular Unit, Department of Neurology, Hospital Sant Joan de Déu, Barcelona, Spain
- Applied Research in Neuromuscular Diseases, Sant Joan de Deu Research Institute, Barcelona, Spain
| |
Collapse
|
2
|
Lu Y, Song X, Ji G, Wu H, Li D, Sun S. Identification of a novel SGCA missense mutation in a case of limb-girdle muscular dystrophy 2D with the absence of four sarcoglycan proteins. Neuropathology 2019; 39:207-211. [PMID: 30989758 PMCID: PMC6850699 DOI: 10.1111/neup.12549] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 02/18/2019] [Accepted: 02/18/2019] [Indexed: 12/02/2022]
Abstract
Limb‐girdle muscular dystrophy 2D (LGMD2D) is caused by mutations in the α‐sarcoglycan gene (SGCA). Due to lack of specificity, it is impossible to identify LGMD2D only by clinical symptoms and conventional immunohistochemical staining. The loss of any protein (α‐, β‐, γ‐, δ‐sarcoglycan) that represent sarcoglycanopathy may cause reduction or absence of the other three proteins. Here, we report a patient with a complete loss of all the four proteins. Next generation sequencing (NGS) results showed a missense mutation (C.218 C > T) and a partial heterozygous deletion containing exons 7 and 8 of SGCA, which led to the final diagnosis of the patient. The discovery of this new mutation could broaden the spectrum of SGCA mutations, which may be associated with putative LGMD2D, especially when all the four proteins are completely missing.
Collapse
Affiliation(s)
- Yanpeng Lu
- Department of Neurology, The Second Hospital of Hebei Medical University, Hebei, China
| | - Xueqin Song
- Department of Neurology, The Second Hospital of Hebei Medical University, Hebei, China
| | - Guang Ji
- Department of Neurology, The Second Hospital of Hebei Medical University, Hebei, China
| | - Hongran Wu
- Department of Neurology, The Second Hospital of Hebei Medical University, Hebei, China
| | - Duan Li
- Department of Neurology, The Second Hospital of Hebei Medical University, Hebei, China
| | - Shuyan Sun
- Department of Neurology, The Second Hospital of Hebei Medical University, Hebei, China
| |
Collapse
|
3
|
Novel TRAPPC11 Mutations in a Chinese Pedigree of Limb Girdle Muscular Dystrophy. Case Rep Genet 2018; 2018:8090797. [PMID: 30105108 PMCID: PMC6076900 DOI: 10.1155/2018/8090797] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 05/22/2018] [Indexed: 12/30/2022] Open
Abstract
Limb girdle muscular dystrophies (LGMDs) are a heterogeneous group of genetic myopathies leading primarily to proximal muscle weakness. It is caused by mutations at over 50 known genetic loci typically from mutations in genes encoding constituents of the sarcolemmal dystrophin complex or related functions. Herein we describe the case of two siblings with LGMD that were investigated using whole-exome sequencing followed by Sanger sequencing validation of a specific double-mutation in the TRAPPC11 gene. Further, from parental sequencing we determined the mode of transmission, a double heterozygous mutation at the maternal and paternal alleles. The two mutations detected have not been described in other patients.
Collapse
|
4
|
Aho AC, Hultsjö S, Hjelm K. Perceptions of the transition from receiving the diagnosis recessive limb-girdle muscular dystrophy to becoming in need of human support and using a wheelchair: an interview study. Disabil Rehabil 2018; 41:2289-2298. [PMID: 29688081 DOI: 10.1080/09638288.2018.1464602] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Purpose: To describe perceptions of the transition from receiving the diagnosis recessive limb-girdle muscular dystrophy to becoming in need of human support to manage daily life and using a wheelchair for ambulation, from the affected young adults' and their parents' perspectives. Method: A qualitative and descriptive study design was used. Semi-structured interviews were held with 14 young adults diagnosed with recessive limb-girdle muscular dystrophy and 19 parents. Phenomenography was used for data analysis. Results: The diagnosis was described as being a shock and difficult to comprehend but also as a relief and a tool for information. Beginning to use a wheelchair was perceived to be mentally difficult but it also provided freedom. New ways of living involved physical, emotional, practical, and social difficulties as well as experiences of learning to adapt to the disease. The transition was overshadowed by concern about disease progression and influenced by facilitating factors, which were young adult being seen as a person; supportive family and friends; mobilized internal resources; meaningful daily activities; adapted environment; and professional support. Conclusions: The different perceptions expressed in this study highlight the importance of identifying personal perceptions and needs in order to optimize support provided by healthcare professionals. Implications for Rehabilitation The different perceptions described in this study emphasize the need for person-centered care for young adults living with recessive limb-girdle muscular dystrophy and their parents. Regular controls and professional support to cope with the disease and its consequences should be offered, not only at the time of diagnosis but also throughout disease progression. Beginning to use a wheelchair can be a psychologically distressing process, which has to be acknowledged by healthcare professionals when introducing it. Healthcare professionals should not only recognize the importance of having social relations and activities that are meaningful but also be a link to authorities in society and to interest organizations that can help to facilitate the person's management of the disease.
Collapse
Affiliation(s)
- Anna Carin Aho
- a Department of Health and Society , Malmö University , Malmö , Sweden
| | - Sally Hultsjö
- b Department of Medical and Health Sciences , Linköping University , Linköping , Sweden.,c Psychiatric Clinic , County Hospital Ryhov , Region Jönköping , Sweden
| | - Katarina Hjelm
- d Department of Public Health and Caring Sciences , Uppsala University , Uppsala , Sweden
| |
Collapse
|
5
|
Mojbafan M, Nilipour Y, Tonekaboni SH, Bagheri SD, Bagherian H, Sharifi Z, Zeinali Z, Tavakkoly-Bazzaz J, Zeinali S. A rare form of limb girdle muscular dystrophy (type 2E) seen in an Iranian family detected by autozygosity mapping. J Neurogenet 2017; 30:1-4. [PMID: 27276190 DOI: 10.3109/01677063.2016.1141208] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Sarcoglycanopathies (SGPs) constitute a subgroup of autosomal recessive limb girdle muscular dystrophies (LGMDs) which are caused by mutations in sarcoglycan (SGs) genes. SG proteins form a core complex consisting of α, β, γ and δ sarcoglycans which are encoded by SGCA, SGCB, SGCG and SGCD genes, respectively. Genetic defect, in any of these SG proteins, results in instability of the whole complex. This effect can be helpful in interpreting muscle biopsy results. Autozygosity mapping is a gene mapping approach which can be applied in large consanguineous families for tracking the defective gene in most autosomal recessive disorders. In the present study, we used autozygosity mapping, to find the gene responsible for muscular dystrophy. Proband was a 10-year-old boy referred to our center for ruling out DMD (Duchenne muscular dystrophy). According to the pedigree and clinical reports, we assessed him for SGPs. Haplotyping, using the four short tandem repeat (STR) markers for each of the SG genes, showed that the phenotype may segregate with SGCB gene; and observing two crossing overs which occurred within the gene suggested that the mutation might be in the first two exons of SGCB gene. Mutation analysis showed a 26 bp duplication (10 bp before the initiation codon till 13 bp after the ATG start codon). This will cause a frameshift in protein synthesis.
Collapse
Affiliation(s)
- Marzieh Mojbafan
- a Department of Molecular Medicine , Biotechnology Research Center, Pasteur Institute of Iran , Tehran , Iran ;,b Department of Medical Genetics , School of Medicine, Tehran University of Medical Sciences , Tehran , Iran
| | - Yalda Nilipour
- c Pediatric Pathology Research Center, Mofid Children's Hospital, Shahid Beheshti Medical University [SBMU] , Tehran , Iran
| | - Seyed Hasan Tonekaboni
- d Pediatric Neurology Center of Excellence, Department of Pediatric Neurology , Mofid Children Hospital, Faculty of Medicine, ShahidBeheshti Medical university , Tehran , Iran
| | | | | | | | - Zahra Zeinali
- e Kawsar Human Genetics Research Center , Tehran , Iran
| | - Javad Tavakkoly-Bazzaz
- b Department of Medical Genetics , School of Medicine, Tehran University of Medical Sciences , Tehran , Iran
| | - Sirous Zeinali
- a Department of Molecular Medicine , Biotechnology Research Center, Pasteur Institute of Iran , Tehran , Iran ;,e Kawsar Human Genetics Research Center , Tehran , Iran
| |
Collapse
|
6
|
Aho AC, Hultsjö S, Hjelm K. Experiences of being parents of young adults living with recessive limb-girdle muscular dystrophy from a salutogenic perspective. Neuromuscul Disord 2017; 27:585-595. [DOI: 10.1016/j.nmd.2017.01.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Revised: 01/23/2017] [Accepted: 01/31/2017] [Indexed: 10/20/2022]
|
7
|
Trendelenburg-Like Gait, Instability and Altered Step Patterns in a Mouse Model for Limb Girdle Muscular Dystrophy 2i. PLoS One 2016; 11:e0161984. [PMID: 27627455 PMCID: PMC5023177 DOI: 10.1371/journal.pone.0161984] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Accepted: 08/13/2016] [Indexed: 11/29/2022] Open
Abstract
Limb-girdle muscular dystrophy type 2i (LGMD2i) affects thousands of lives with shortened life expectancy mainly due to cardiac and respiratory problems and difficulty with ambulation significantly compromising quality of life. Limited studies have noted impaired gait in patients and animal models of different muscular dystrophies, but not in animal models of LGMD2i. Our goal, therefore, was to quantify gait metrics in the fukutin-related protein P448L mutant (P448L) mouse, a recently developed model for LGMD2i. The Noldus CatWalk XT motion capture system was used to identify multiple gait impairments. An average galloping body speed of 35 cm/s for both P448L and C57BL/6 wild-type mice was maintained to ensure differences in gait were due only to strain physiology. Compared to wild-type mice, P448L mice reach maximum contact 10% faster and have 40% more paw surface area during stance. Additionally, force intensity at the time of maximum paw contact is roughly 2-fold higher in P448L mice. Paw swing time is reduced in P448L mice without changes in stride length as a faster swing speed compensates. Gait instability in P448L mice is indicated by 50% higher instances of 3 and 4 paw stance support and conversely, 2-fold fewer instances of single paw stance support and no instance of zero paw support. This leads to lower variation of normal step patterns used and a higher use of uncommon step patterns. Similar anomalies have also been noted in muscular dystrophy patients due to weakness in the hip abductor muscles, producing a Trendelenburg gait characterized by “waddling” and more pronounced shifts to the stance leg. Thus, gait of P448L mice replicates anomalies commonly seen in LGMD2i patients, which is not only potentially valuable for assessing drug efficacy in restoring movement biomechanics, but also for better understanding them.
Collapse
|
8
|
Aho AC, Hultsjö S, Hjelm K. Health perceptions of young adults living with recessive limb-girdle muscular dystrophy. J Adv Nurs 2016; 72:1915-25. [DOI: 10.1111/jan.12962] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/14/2016] [Indexed: 12/27/2022]
Affiliation(s)
- Anna Carin Aho
- Department of Health and Caring Sciences; Linnaeus University; Växjö Sweden
| | - Sally Hultsjö
- Psychiatric Clinic; County Hospital; Ryhov; Jönköping Sweden
| | - Katarina Hjelm
- Department of Social and Welfare Studies; University of Linköping; Campus Norrköping Sweden
| |
Collapse
|
9
|
Differential Diagnosis between Duchenne Muscular Dystrophy and Limb Girdle Muscular Dystrophy 2a. CURRENT HEALTH SCIENCES JOURNAL 2015; 41:385-389. [PMID: 30538847 PMCID: PMC6243516 DOI: 10.12865/chsj.41.04.15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 12/01/2015] [Indexed: 11/18/2022]
Abstract
Limb Girdle Muscular Dystrophy 2A (LGMD 2A) is the most common form of limb girdle muscular dystrophies caused by mutations in the calpain-3 gene (CAPN-3). The pattern of LGMD 2A can be clinically indistinguishable from that of Duchenne Muscular Dystrophy (DMD). We report a case of a 14-year-old boy which has the initial diagnosed as DMD at 6 years old, based on clinical features and very elevated serum creatine kinase levels. A muscle biopsy at the age of 10 showed atypical features which suggested a histiocytosis or neural damage. An MRI conducted 2 years later revealed fatty degeneration predominantly in the posterior region of the thigh and led the diagnosis to LGMD 2A, as well as the necessity to repeat the biopsy. Immunohistochemical analysis was normal for dystrophin, but the Western Blott showed a normal/borderline amount of calpain-3 in the muscle. We also performed a molecular analysis that identified a compound heterozygous mutation of the calpain 3 gene (CAPN 3). LGMD 2A was often misdiagnosed as DMD due to the similarities in clinical manifestations and technique limitations; the immunohistochemical examination, the magnetic resonance imaging examination and the molecular analysis are an essential tool for establishing a right diagnosis.
Collapse
|
10
|
Aho AC, Hultsjö S, Hjelm K. Young adults' experiences of living with recessive limb-girdle muscular dystrophy from a salutogenic orientation: an interview study. Disabil Rehabil 2015; 37:2083-91. [PMID: 25582030 DOI: 10.3109/09638288.2014.998782] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
PURPOSE To describe young adults' experiences of living with recessive limb-girdle muscular dystrophy (LGMD2) from a salutogenic orientation. METHODS A qualitative explorative interview study, including 14 participants aged 20-30 years, was performed focusing on comprehensibility, manageability and meaningfulness in daily life. Content analysis was used for data analysis. RESULT Living with LGMD2 not only implies learning to live with the disease and the variations between good and bad periods but also means trying to make sense of a progressive disease that brings uncertainty about future health, by striving to make the best of the situation. Disease progression involves practical and mental struggle, trying to maintain control over one's life despite vanished physical functions that require continual adjustments to the body. Restrictions in a double sense were described, not only due to the disease but also due to poor comprehension of the disease in society. Lack of knowledge about LGMD2 among professionals often results in having to fight for the support needed. CONCLUSION In order to manage daily life, it is important to be seen and understood as an individual in contacts with professionals and in society in general, to have informal social support and meaningful activities as well as access to personal assistance if necessary. IMPLICATIONS FOR REHABILITATION Recessive limb-girdle muscular dystrophy (LGMD2) is a group of progressive disorders, which manifest in physical and psychological consequences for the individual. According to the salutogenic orientation, people need to find life comprehensible, manageable and meaningful, i.e. to achieve a sense of coherence (SOC), but living with LGMD2 may recurrently challenge the individual's SOC. Through the holistic view of the individual's situation that the salutogenic orientation provides, professionals may support the individual to strengthen SOC and thereby facilitate the movement towards health.
Collapse
Affiliation(s)
- Anna Carin Aho
- a Department of Health and Caring Sciences , Linnaeus University , Växjö , Sweden
| | - Sally Hultsjö
- b Psychiatric Clinic, County Hospital , Ryhov, Jönköping , Sweden , and
| | - Katarina Hjelm
- c Department of Social and Welfare Studies , Campus Norrköping, Linköping University , Linköping , Sweden
| |
Collapse
|
11
|
El Kerch F, Ratbi I, Sbiti A, Laarabi FZ, Barkat A, Sefiani A. Carrier frequency of the c.525delT mutation in the SGCG gene and estimated prevalence of limb girdle muscular dystrophy type 2C among the Moroccan population. Genet Test Mol Biomarkers 2014; 18:253-6. [PMID: 24552312 DOI: 10.1089/gtmb.2013.0326] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Autosomal recessive limb-girdle muscular dystrophies (AR-LGMDs) are characterized by clinical and genetic heterogeneity. LGMD type 2C, or γ-sarcoglycanopathy, is the most frequent in North African populations as a result of the founder c.525delT mutation in the SGCG gene. Its epidemiology is poorly known in Morocco, and its prevalence among the Moroccan population has never been evaluated. This study screened 26 patients with a LGMD2C and 45 patients with an AR-LGMD phenotype for the c.525delT mutation. DNA extracted from umbilical cord blood samples of 250 newborns was tested for the same mutation. Molecular epidemiologic methods were used to calculate the frequency of heterozygotes for this mutation in Moroccan newborns and to estimate the prevalence of LGMD2C in the Moroccan population. The carrier frequency was estimated to be 1/250, which would imply that the prevalence of LGMD2C would be approximately 1/20,492 considering the effect of consanguinity. The homozygous c.525delT mutation was found in 65% of all patients with AR-LGMDs. These findings suggest that AR-LGMDs are prevalent in the Moroccan population and LGMD2C is one of the most common forms. This information might be useful for the development of diagnostic strategies on a large scale for better management of patients with AR-LGMD and genetic counseling of families.
Collapse
Affiliation(s)
- Fatiha El Kerch
- 1 Département de Génétique Médicale, Institut National d'Hygiène , Rabat, Morocco
| | | | | | | | | | | |
Collapse
|
12
|
Abstract
On the basis of strong research evidence, Duchenne muscular dystrophy (DMD), the most common severe childhood form of muscular dystrophy, is an X-linked recessive disorder caused by out-of-frame mutations of the dystrophin gene. Thus, it is classified asa dystrophinopathy. The disease onset is before age 5 years. Patients with DMD present with progressive symmetrical limb-girdle muscle weakness and become wheelchair dependent after age 12 years. (2)(3). On the basis of some research evidence,cardiomyopathy and congestive heart failure are usually seen in the late teens in patients with DMD. Progressive scoliosis and respiratory in sufficiency often develop once wheelchair dependency occurs. Respiratory failure and cardiomyopathy are common causes of death, and few survive beyond the third decade of life. (2)(3)(4)(5)(6)(7). On the basis of some research evidence, prednisone at 0.75 mg/kg daily (maximum dose, 40 mg/d) or deflazacort at 0.9 mg/kg daily (maximum dose, 39 mg/d), a derivative of prednisolone (not available in the United States), as a single morning dose is recommended for DMD patients older than 5 years, which may prolong independent walking from a few months to 2 years. (2)(3)(16)(17). Based on some research evidence, treatment with angiotensin-converting enzyme inhibitors, b-blockers, and diuretics has been reported to be beneficial in DMD patients with cardiac abnormalities. (2)(3)(5)(18). Based on expert opinion, children with muscle weakness and increased serum creatine kinase levels may be associated with either genetic or acquired muscle disorders (Tables 1 and 3). (14)(15)
Collapse
Affiliation(s)
- Chang-Yong Tsao
- Department of Clinical Pediatrics and Neurology, College of Medicine, The Ohio State University, Columbus, OH
| |
Collapse
|
13
|
Mamyrova G, Katz JD, Jones RV, Targoff IN, Lachenbruch PA, Jones OY, Miller FW, Rider LG. Clinical and laboratory features distinguishing juvenile polymyositis and muscular dystrophy. Arthritis Care Res (Hoboken) 2014; 65:1969-75. [PMID: 23925923 DOI: 10.1002/acr.22088] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2013] [Accepted: 07/26/2013] [Indexed: 01/17/2023]
Abstract
OBJECTIVE To differentiate juvenile polymyositis (PM) and muscular dystrophy, both of which may present with chronic muscle weakness and inflammation. METHODS We studied 39 patients with probable or definite juvenile PM and 9 patients with muscular dystrophies who were initially misdiagnosed as having juvenile PM. Differences in demographic, clinical, and laboratory results; outcomes; and treatment responses were evaluated by Fisher's exact and rank sum tests. Random forests classification analysis and logistic regression were performed to examine significant differences in multivariable models. RESULTS Clinical features and serum muscle enzyme levels were similar between juvenile PM and dystrophy patients, except 89% of dystrophy patients had muscle atrophy compared with 46% of juvenile PM patients. Dystrophy patients had a longer delay to diagnosis (median 12 versus 4 months) and were less frequently hospitalized than juvenile PM patients (22% versus 74%). No dystrophy patients, but 54% of juvenile PM patients, had a myositis autoantibody. Dystrophy patients more frequently had myopathic features on muscle biopsy, including diffuse variation of myofiber size, fiber hypertrophy, and myofiber fibrosis (44-100% versus 8-53%). Juvenile PM patients more frequently had complex repetitive discharges on electromyography and a complete response to treatment with prednisone or other immunosuppressive agents than dystrophy patients (44% versus 0%). Random forests analysis revealed that the most important features in distinguishing juvenile PM from dystrophies were myositis autoantibodies, clinical muscle atrophy, and myofiber size variation on biopsy. Logistic regression confirmed muscle atrophy, myofiber fibrosis, and hospitalization as significant predictors. CONCLUSION Muscular dystrophy can present similarly to juvenile PM. Selected clinical and laboratory features are helpful in combination in distinguishing these conditions.
Collapse
|
14
|
Bögershausen N, Shahrzad N, Chong J, von Kleist-Retzow JC, Stanga D, Li Y, Bernier F, Loucks C, Wirth R, Puffenberger E, Hegele R, Schreml J, Lapointe G, Keupp K, Brett C, Anderson R, Hahn A, Innes A, Suchowersky O, Mets M, Nürnberg G, McLeod D, Thiele H, Waggoner D, Altmüller J, Boycott K, Schoser B, Nürnberg P, Ober C, Heller R, Parboosingh J, Wollnik B, Sacher M, Lamont R. Recessive TRAPPC11 mutations cause a disease spectrum of limb girdle muscular dystrophy and myopathy with movement disorder and intellectual disability. Am J Hum Genet 2013; 93:181-90. [PMID: 23830518 PMCID: PMC3710757 DOI: 10.1016/j.ajhg.2013.05.028] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Revised: 04/22/2013] [Accepted: 05/28/2013] [Indexed: 11/30/2022] Open
Abstract
Myopathies are a clinically and etiologically heterogeneous group of disorders that can range from limb girdle muscular dystrophy (LGMD) to syndromic forms with associated features including intellectual disability. Here, we report the identification of mutations in transport protein particle complex 11 (TRAPPC11) in three individuals of a consanguineous Syrian family presenting with LGMD and in five individuals of Hutterite descent presenting with myopathy, infantile hyperkinetic movements, ataxia, and intellectual disability. By using a combination of whole-exome or genome sequencing with homozygosity mapping, we identified the homozygous c.2938G>A (p.Gly980Arg) missense mutation within the gryzun domain of TRAPPC11 in the Syrian LGMD family and the homozygous c.1287+5G>A splice-site mutation resulting in a 58 amino acid in-frame deletion (p.Ala372_Ser429del) in the foie gras domain of TRAPPC11 in the Hutterite families. TRAPPC11 encodes a component of the multiprotein TRAPP complex involved in membrane trafficking. We demonstrate that both mutations impair the binding ability of TRAPPC11 to other TRAPP complex components and disrupt the Golgi apparatus architecture. Marker trafficking experiments for the p.Ala372_Ser429del deletion indicated normal ER-to-Golgi trafficking but dramatically delayed exit from the Golgi to the cell surface. Moreover, we observed alterations of the lysosomal membrane glycoproteins lysosome-associated membrane protein 1 (LAMP1) and LAMP2 as a consequence of TRAPPC11 dysfunction supporting a defect in the transport of secretory proteins as the underlying pathomechanism.
Collapse
Affiliation(s)
- Nina Bögershausen
- Institute of Human Genetics, University Hospital Cologne, 50931 Cologne, Germany
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, 50931 Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50674 Cologne, Germany
| | - Nassim Shahrzad
- Department of Biology, Concordia University, Montreal, QC H4B 1R6, Canada
| | - Jessica X. Chong
- Department of Human Genetics, University of Chicago, Chicago, IL 60637, USA
| | | | - Daniela Stanga
- Department of Biology, Concordia University, Montreal, QC H4B 1R6, Canada
| | - Yun Li
- Institute of Human Genetics, University Hospital Cologne, 50931 Cologne, Germany
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, 50931 Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50674 Cologne, Germany
| | - Francois P. Bernier
- Department of Medical Genetics, University of Calgary, Calgary, AB T2N 4N1, Canada
- Alberta Children’s Hospital Research Institute, University of Calgary, Calgary, AB T2N 4N1, Canada
| | - Catrina M. Loucks
- Department of Medical Genetics, University of Calgary, Calgary, AB T2N 4N1, Canada
| | - Radu Wirth
- Institute of Human Genetics, University Hospital Cologne, 50931 Cologne, Germany
| | | | - Robert A. Hegele
- Robarts Research Institute and University of Western Ontario, London, ON N6G 2V4, Canada
| | - Julia Schreml
- Institute of Human Genetics, University Hospital Cologne, 50931 Cologne, Germany
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, 50931 Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50674 Cologne, Germany
| | - Gabriel Lapointe
- Department of Biology, Concordia University, Montreal, QC H4B 1R6, Canada
| | - Katharina Keupp
- Institute of Human Genetics, University Hospital Cologne, 50931 Cologne, Germany
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, 50931 Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50674 Cologne, Germany
| | | | - Rebecca Anderson
- Department of Human Genetics, University of Chicago, Chicago, IL 60637, USA
| | - Andreas Hahn
- Department of Child Neurology, University Hospital Giessen, 35392 Giessen, Germany
| | - A. Micheil Innes
- Department of Medical Genetics, University of Calgary, Calgary, AB T2N 4N1, Canada
- Alberta Children’s Hospital Research Institute, University of Calgary, Calgary, AB T2N 4N1, Canada
| | - Oksana Suchowersky
- Departments of Medicine, Medical Genetics, and Psychiatry, University of Alberta, Edmonton, AB T6G 2B7, Canada
| | - Marilyn B. Mets
- Department of Ophthalmology, Lurie Children's Hospital of Chicago, Northwestern University, Chicago, IL 60611, USA
| | - Gudrun Nürnberg
- Cologne Center for Genomics, University of Cologne, 50931 Cologne, Germany
| | - D. Ross McLeod
- Department of Medical Genetics, University of Calgary, Calgary, AB T2N 4N1, Canada
| | - Holger Thiele
- Cologne Center for Genomics, University of Cologne, 50931 Cologne, Germany
| | - Darrel Waggoner
- Department of Human Genetics, University of Chicago, Chicago, IL 60637, USA
| | - Janine Altmüller
- Cologne Center for Genomics, University of Cologne, 50931 Cologne, Germany
| | - Kym M. Boycott
- Children's Hospital of Eastern Ontario Research Institute, University of Ottawa, Ottawa, ON K1H 8L1, Canada
| | - Benedikt Schoser
- Friedrich-Bauer-Institute, Ludwig-Maximilian-University Munich, 80336 Munich, Germany
| | - Peter Nürnberg
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, 50931 Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50674 Cologne, Germany
- Cologne Center for Genomics, University of Cologne, 50931 Cologne, Germany
| | - Carole Ober
- Department of Human Genetics, University of Chicago, Chicago, IL 60637, USA
- Department of Obstetrics, University of Chicago, Chicago, IL 60637, USA
| | - Raoul Heller
- Institute of Human Genetics, University Hospital Cologne, 50931 Cologne, Germany
| | - Jillian S. Parboosingh
- Department of Medical Genetics, University of Calgary, Calgary, AB T2N 4N1, Canada
- Alberta Children’s Hospital Research Institute, University of Calgary, Calgary, AB T2N 4N1, Canada
| | - Bernd Wollnik
- Institute of Human Genetics, University Hospital Cologne, 50931 Cologne, Germany
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, 50931 Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50674 Cologne, Germany
| | - Michael Sacher
- Department of Biology, Concordia University, Montreal, QC H4B 1R6, Canada
- Department of Anatomy and Cell Biology, McGill University, Montreal, QC H3A 2B2, Canada
| | - Ryan E. Lamont
- Department of Medical Genetics, University of Calgary, Calgary, AB T2N 4N1, Canada
| |
Collapse
|
15
|
Kostrominova TY, Reiner DS, Haas RH, Ingermanson R, McDonough PM. Automated methods for the analysis of skeletal muscle fiber size and metabolic type. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2013; 306:275-332. [PMID: 24016528 DOI: 10.1016/b978-0-12-407694-5.00007-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
It is of interest to quantify the size, shape, and metabolic subtype of skeletal muscle fibers in many areas of biomedical research. To do so, skeletal muscle samples are sectioned transversely to the length of the muscle and labeled for extracellular or membrane proteins to delineate the fiber boundaries and additionally for biomarkers related to function or metabolism. The samples are digitally photographed and the fibers "outlined" for quantification of fiber cross-sectional area (CSA) using pointing devices interfaced to a computer, which is tedious, prone to error, and can be nonobjective. Here, we review methods for characterizing skeletal muscle fibers and describe new automated techniques, which rapidly quantify CSA and biomarkers. We discuss the applications of these methods to the characterization of mitochondrial dysfunctions, which underlie a variety of human afflictions, and we present a novel approach, utilizing images from the online Human Protein Atlas to predict relationships between fiber-specific protein expression, function, and metabolism.
Collapse
|