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Gorji AE, Ostaszewski P, Urbańska K, Sadkowski T. Does β-Hydroxy-β-Methylbutyrate Have Any Potential to Support the Treatment of Duchenne Muscular Dystrophy in Humans and Animals? Biomedicines 2023; 11:2329. [PMID: 37626825 PMCID: PMC10452677 DOI: 10.3390/biomedicines11082329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 08/14/2023] [Accepted: 08/17/2023] [Indexed: 08/27/2023] Open
Abstract
Skeletal muscle is the protein reservoir of our body and an important regulator of glucose and lipid homeostasis. The dystrophin gene is the largest gene and has a key role in skeletal muscle construction and function. Mutations in the dystrophin gene cause Duchenne and Becker muscular dystrophy in humans, mice, dogs, and cats. Duchenne muscular dystrophy (DMD) is an X-linked neuromuscular condition causing progressive muscle weakness and premature death. β-hydroxy β-methylbutyrate (HMB) prevents deleterious muscle responses under pathological conditions, including tumor and chronic steroid therapy-related muscle losses. The use of HMB as a dietary supplement allows for increasing lean weight gain; has a positive immunostimulatory effect; is associated with decreased mortality; and attenuates sarcopenia in elderly animals and individuals. This study aimed to identify some genes, metabolic pathways, and biological processes which are common for DMD and HMB based on existing literature and then discuss the consequences of that interaction.
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Affiliation(s)
- Abdolvahab Ebrahimpour Gorji
- Department of Physiological Sciences, Institute of Veterinary Medicine, Warsaw University of Life Sciences, 02-776 Warsaw, Poland; (A.E.G.); (P.O.)
| | - Piotr Ostaszewski
- Department of Physiological Sciences, Institute of Veterinary Medicine, Warsaw University of Life Sciences, 02-776 Warsaw, Poland; (A.E.G.); (P.O.)
| | - Kaja Urbańska
- Department of Morphological Sciences, Institute of Veterinary Medicine, Warsaw University of Life Sciences, 02-776 Warsaw, Poland;
| | - Tomasz Sadkowski
- Department of Physiological Sciences, Institute of Veterinary Medicine, Warsaw University of Life Sciences, 02-776 Warsaw, Poland; (A.E.G.); (P.O.)
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Kilroy EA, Burris R, Javelosa E, Waits J, Lek A, Rodgers R, Opgenorth H, Hesterlee S. The Muscular Dystrophy Association's neuroMuscular ObserVational Research Data Hub (MOVR): Design, Methods, and Initial Observations. J Neuromuscul Dis 2023; 10:365-380. [PMID: 36911943 DOI: 10.3233/jnd-221551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
Abstract
BACKGROUND Neuromuscular disease (NMD) research is experiencing tremendous growth as a result of progress in diagnostics and therapeutics yet there continues to be a significant clinical data shortage for these rare diseases. To maximize the development and impact of new therapies, the Muscular Dystrophy Association (MDA) created the neuroMuscular ObserVational Research Data Hub (MOVR) as an observational research study that collects disease-specific measures from individuals living with NMDs in the United States. OBJECTIVE This manuscript provides a description of MOVR, participants enrolled in MOVR, and longitudinal data availability. METHODS MOVR collects longitudinal data from individuals diagnosed with ALS, BMD, DMD, FSHD, LGMD, Pompe disease, or SMA, and who are seen for care at a participating MDA Care Center. Data are entered from medical records into standardized electronic case report forms (eCRFs). These eCRFs capture participants' demographics, diagnostic journeys, clinical visits, and discontinuation from the study. RESULTS From January 2019 to May 2022, MOVR collected data from 50 participating care centers and 1,957 participants. Data from 1,923 participants who participated in MDA's pilot registry were migrated into MOVR, creating a total of 3,880 participants in MOVR. Initial analysis of aggregated data demonstrated that 91% of eCRFs were complete. Forty-three percent of participants had 3 or more encounters and 50% of all encounters were 5 months or less from the previous encounter. DISCUSSION As a centralized data hub for multiple NMDs, MOVR serves as a platform that can be used to inform disease understanding, guide clinical trial design, and accelerate drug development for NMDs.
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Affiliation(s)
| | | | | | | | - Angela Lek
- Muscular Dystrophy Association, Chicago, IL, USA
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Inherited myopathies in the Middle East and North Africa. GENE REPORTS 2022. [DOI: 10.1016/j.genrep.2022.101674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Houston BJ, Riera-Escamilla A, Wyrwoll MJ, Salas-Huetos A, Xavier MJ, Nagirnaja L, Friedrich C, Conrad DF, Aston KI, Krausz C, Tüttelmann F, O’Bryan MK, Veltman JA, Oud MS. A systematic review of the validated monogenic causes of human male infertility: 2020 update and a discussion of emerging gene-disease relationships. Hum Reprod Update 2021; 28:15-29. [PMID: 34498060 PMCID: PMC8730311 DOI: 10.1093/humupd/dmab030] [Citation(s) in RCA: 79] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 08/05/2021] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Human male infertility has a notable genetic component, including well-established diagnoses such as Klinefelter syndrome, Y-chromosome microdeletions and monogenic causes. Approximately 4% of all infertile men are now diagnosed with a genetic cause, but a majority (60-70%) remain without a clear diagnosis and are classified as unexplained. This is likely in large part due to a delay in the field adopting next-generation sequencing (NGS) technologies, and the absence of clear statements from field leaders as to what constitutes a validated cause of human male infertility (the current paper aims to address this). Fortunately, there has been a significant increase in the number of male infertility NGS studies. These have revealed a considerable number of novel gene-disease relationships (GDRs), which each require stringent assessment to validate the strength of genotype-phenotype associations. To definitively assess which of these GDRs are clinically relevant, the International Male Infertility Genomics Consortium (IMIGC) has identified the need for a systematic review and a comprehensive overview of known male infertility genes and an assessment of the evidence for reported GDRs. OBJECTIVE AND RATIONALE In 2019, the first standardised clinical validity assessment of monogenic causes of male infertility was published. Here, we provide a comprehensive update of the subsequent 1.5 years, employing the joint expertise of the IMIGC to systematically evaluate all available evidence (as of 1 July 2020) for monogenic causes of isolated or syndromic male infertility, endocrine disorders or reproductive system abnormalities affecting the male sex organs. In addition, we systematically assessed the evidence for all previously reported possible monogenic causes of male infertility, using a framework designed for a more appropriate clinical interpretation of disease genes. SEARCH METHODS We performed a literature search according to the PRISMA guidelines up until 1 July 2020 for publications in English, using search terms related to 'male infertility' in combination with the word 'genetics' in PubMed. Next, the quality and the extent of all evidence supporting selected genes were assessed using an established and standardised scoring method. We assessed the experimental quality, patient phenotype assessment and functional evidence based on gene expression, mutant in-vitro cell and in-vivo animal model phenotypes. A final score was used to determine the clinical validity of each GDR, across the following five categories: no evidence, limited, moderate, strong or definitive. Variants were also reclassified according to the American College of Medical Genetics and Genomics-Association for Molecular Pathology (ACMG-AMP) guidelines and were recorded in spreadsheets for each GDR, which are available at imigc.org. OUTCOMES The primary outcome of this review was an overview of all known GDRs for monogenic causes of human male infertility and their clinical validity. We identified a total of 120 genes that were moderately, strongly or definitively linked to 104 infertility phenotypes. WIDER IMPLICATIONS Our systematic review curates all currently available evidence to reveal the strength of GDRs in male infertility. The existing guidelines for genetic testing in male infertility cases are based on studies published 25 years ago, and an update is far overdue. The identification of 104 high-probability 'human male infertility genes' is a 33% increase from the number identified in 2019. The insights generated in the current review will provide the impetus for an update of existing guidelines, will inform novel evidence-based genetic testing strategies used in clinics, and will identify gaps in our knowledge of male infertility genetics. We discuss the relevant international guidelines regarding research related to gene discovery and provide specific recommendations to the field of male infertility. Based on our findings, the IMIGC consortium recommend several updates to the genetic testing standards currently employed in the field of human male infertility, most important being the adoption of exome sequencing, or at least sequencing of the genes validated in this study, and expanding the patient groups for which genetic testing is recommended.
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Affiliation(s)
- Brendan J Houston
- School of BioSciences and Bio21 Institute, The University of Melbourne, Parkville, VIC, Australia
| | - Antoni Riera-Escamilla
- Andrology Department, Fundació Puigvert, Universitat Autònoma de Barcelona, Instituto de Investigaciones Biomédicas Sant Pau (IIB-Sant Pau), Barcelona, Catalonia, Spain
| | - Margot J Wyrwoll
- Institute of Reproductive Genetics, University of Münster, Münster, Germany
| | - Albert Salas-Huetos
- Andrology and IVF Laboratory, Division of Urology, Department of Surgery, University of Utah School of Medicine, Salt Lake City, UT, USA
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Harvard University, Boston, MA, USA
| | - Miguel J Xavier
- Faculty of Medical Sciences, Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Liina Nagirnaja
- Division of Genetics, Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, OR, USA
- Genetics of Male Infertility Initiative (GEMINI)
| | - Corinna Friedrich
- Institute of Reproductive Genetics, University of Münster, Münster, Germany
| | - Don F Conrad
- Division of Genetics, Oregon National Primate Research Center, Oregon Health & Science University, Beaverton, OR, USA
- Genetics of Male Infertility Initiative (GEMINI)
- International Male Infertility Genomics Consortium (IMIGC)
| | - Kenneth I Aston
- Andrology and IVF Laboratory, Division of Urology, Department of Surgery, University of Utah School of Medicine, Salt Lake City, UT, USA
- Genetics of Male Infertility Initiative (GEMINI)
- International Male Infertility Genomics Consortium (IMIGC)
| | - Csilla Krausz
- Genetics of Male Infertility Initiative (GEMINI)
- International Male Infertility Genomics Consortium (IMIGC)
- Department of Experimental and Clinical Biomedical Sciences “Mario Serio”, Centre of Excellence DeNothe, University of Florence, Florence, Italy
| | - Frank Tüttelmann
- Institute of Reproductive Genetics, University of Münster, Münster, Germany
- International Male Infertility Genomics Consortium (IMIGC)
| | - Moira K O’Bryan
- School of BioSciences and Bio21 Institute, The University of Melbourne, Parkville, VIC, Australia
- Genetics of Male Infertility Initiative (GEMINI)
- International Male Infertility Genomics Consortium (IMIGC)
| | - Joris A Veltman
- Faculty of Medical Sciences, Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
- International Male Infertility Genomics Consortium (IMIGC)
| | - Manon S Oud
- Department of Human Genetics, Donders Institute for Brain, Cognition and Behaviour, Radboudumc, Nijmegen, the Netherlands
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Waldrop MA, Connolly AM, Mendell JR. An evaluation of onasemnogene abeparvovec for spinal muscular atrophy (SMN1). Expert Opin Orphan Drugs 2021. [DOI: 10.1080/21678707.2021.2003778] [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: 10/19/2022]
Affiliation(s)
- Megan A. Waldrop
- Center for Gene Therapy, Abigail Wexner Research Institute Nationwide Children’s Hospital, Columbus OH USA
- Departments of Pediatrics and Neurology, Wexner Medical Center, Ohio State University, Columbus OH USA
| | - Anne M. Connolly
- Center for Gene Therapy, Abigail Wexner Research Institute Nationwide Children’s Hospital, Columbus OH USA
- Departments of Pediatrics and Neurology, Wexner Medical Center, Ohio State University, Columbus OH USA
| | - Jerry R. Mendell
- Center for Gene Therapy, Abigail Wexner Research Institute Nationwide Children’s Hospital, Columbus OH USA
- Departments of Pediatrics and Neurology, Wexner Medical Center, Ohio State University, Columbus OH USA
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Deschenes MR, Patek LG, Trebelhorn AM, High MC, Flannery RE. Juvenile Neuromuscular Systems Show Amplified Disturbance to Muscle Unloading. Front Physiol 2021; 12:754052. [PMID: 34759841 PMCID: PMC8573242 DOI: 10.3389/fphys.2021.754052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 09/27/2021] [Indexed: 11/21/2022] Open
Abstract
Muscle unloading results in severe disturbance in neuromuscular function. During juvenile stages of natural development, the neuromuscular system experiences a high degree of plasticity in function and structure. This study aimed to determine whether muscle unloading imposed during juvenile development would elicit more severe disruption in neuromuscular function than when imposed on fully developed, mature neuromuscular systems. Twenty juvenile (3 months old) and 20 mature (8 months old) rats were equally divided into unloaded and control groups yielding a total of four groups (N = 10/each). Following the 2 week intervention period, soleus muscles were surgically extracted and using an ex vivo muscle stimulation and recording system, were examined for neuromuscular function. The unloading protocol was found to have elicited significant (P ≤ 0.05) declines in whole muscle wet weight in both juvenile and mature muscles, but of a similar degree (P = 0.286). Results also showed that juvenile muscles displayed significantly greater decay in peak force due to unloading than mature muscles, such a finding was also made for specific tension or force/muscle mass. When examining neuromuscular efficiency, i.e., function of the neuromuscular junction, it again was noted that juvenile systems were more negatively affected by muscle unloading than mature systems. These results indicate that juvenile neuromuscular systems are more sensitive to the effects of unloading than mature ones, and that the primary locus of this developmental related difference is likely the neuromuscular junction as indicated by age-related differences in neuromuscular transmission efficiency.
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Affiliation(s)
- Michael R Deschenes
- Department of Kinesiology and Health Sciences, College of William & Mary, Williamsburg, VA, United States.,Program in Neuroscience, College of William & Mary, Williamsburg, VA, United States
| | - Leah G Patek
- Department of Kinesiology and Health Sciences, College of William & Mary, Williamsburg, VA, United States
| | - Audrey M Trebelhorn
- Department of Kinesiology and Health Sciences, College of William & Mary, Williamsburg, VA, United States
| | - Madeline C High
- Program in Neuroscience, College of William & Mary, Williamsburg, VA, United States
| | - Rachel E Flannery
- Department of Kinesiology and Health Sciences, College of William & Mary, Williamsburg, VA, United States
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Beaufils M, Travard L, Rendu J, Marty I. Therapies for RYR1-Related Myopathies: Where We Stand and the Perspectives. Curr Pharm Des 2021; 28:15-25. [PMID: 34514983 DOI: 10.2174/1389201022666210910102516] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Accepted: 08/13/2021] [Indexed: 11/22/2022]
Abstract
RyR1-related myopathies are a family of genetic neuromuscular diseases due to mutations in the RYR1 gene. No treatment exists for any of these myopathies today, which could change in the coming years with the growing number of studies dedicated to the pre-clinical assessment of various approaches, from pharmacological to gene therapy strategies, using the numerous models developed up to now. In addition, the first clinical trials for these rare diseases have just been completed or are being launched. We review the most recent results obtained for the treatment of RyR1-related myopathies, and, in view of the progress in therapeutic development for other myopathies, we discuss the possible future therapeutic perspectives for RyR1-related myopathies.
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Affiliation(s)
- Mathilde Beaufils
- University Grenoble Alpes, INSERM, U1216, CHU Grenoble Alpes, Grenoble Institut Neurosciences, Grenoble. France
| | - Lauriane Travard
- University Grenoble Alpes, INSERM, U1216, CHU Grenoble Alpes, Grenoble Institut Neurosciences, Grenoble. France
| | - John Rendu
- University Grenoble Alpes, INSERM, U1216, CHU Grenoble Alpes, Grenoble Institut Neurosciences, Grenoble. France
| | - Isabelle Marty
- University Grenoble Alpes, INSERM, U1216, CHU Grenoble Alpes, Grenoble Institut Neurosciences, Grenoble. France
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Peristeri E, Dardiotis E. Editorial for Special Issue "Genetic Basis and Epidemiology of Myopathies". Int J Mol Sci 2021; 22:ijms22042152. [PMID: 33671495 PMCID: PMC7926838 DOI: 10.3390/ijms22042152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 02/19/2021] [Accepted: 02/19/2021] [Indexed: 11/16/2022] Open
Abstract
We are pleased to announce a Special Issue on the Genetic Basis and Epidemiology of Myopathies. This Special Issue is collecting papers pertaining to various lines of research focusing on the genetic basis and the epidemiology of myopathies. The Guest Editors' note combines the contributing authors' reviews and findings of relevant research, and we hope that future studies on myopathies will attempt to confirm these findings and, additionally, evaluate supplementary phenotypic and histological expressions of myopathies, as well as genetic factors in their pathogenesis.
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Fortunato F, Rossi R, Falzarano MS, Ferlini A. Innovative Therapeutic Approaches for Duchenne Muscular Dystrophy. J Clin Med 2021; 10:jcm10040820. [PMID: 33671409 PMCID: PMC7922390 DOI: 10.3390/jcm10040820] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 02/10/2021] [Accepted: 02/12/2021] [Indexed: 02/06/2023] Open
Abstract
Duchenne muscular dystrophy (DMD) is the most common childhood muscular dystrophy affecting ~1:5000 live male births. Following the identification of pathogenic variations in the dystrophin gene in 1986, the underlining genotype/phenotype correlations emerged and the role of the dystrophin protein was elucidated in skeletal, smooth, and cardiac muscles, as well as in the brain. When the dystrophin protein is absent or quantitatively or qualitatively modified, the muscle cannot sustain the stress of repeated contractions. Dystrophin acts as a bridging and anchoring protein between the sarcomere and the sarcolemma, and its absence or reduction leads to severe muscle damage that eventually cannot be repaired, with its ultimate substitution by connective tissue and fat. The advances of an understanding of the molecular pathways affected in DMD have led to the development of many therapeutic strategies that tackle different aspects of disease etiopathogenesis, which have recently led to the first successful approved orphan drugs for this condition. The therapeutic advances in this field have progressed exponentially, with second-generation drugs now entering in clinical trials as gene therapy, potentially providing a further effective approach to the condition.
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