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https://www.readbyqxmd.com/read/28728956/ataluren-in-patients-with-nonsense-mutation-duchenne-muscular-dystrophy-act-dmd-a-multicentre-randomised-double-blind-placebo-controlled-phase-3-trial
#1
Craig M McDonald, Craig Campbell, Ricardo Erazo Torricelli, Richard S Finkel, Kevin M Flanigan, Nathalie Goemans, Peter Heydemann, Anna Kaminska, Janbernd Kirschner, Francesco Muntoni, Andrés Nascimento Osorio, Ulrike Schara, Thomas Sejersen, Perry B Shieh, H Lee Sweeney, Haluk Topaloglu, Már Tulinius, Juan J Vilchez, Thomas Voit, Brenda Wong, Gary Elfring, Hans Kroger, Xiaohui Luo, Joseph McIntosh, Tuyen Ong, Peter Riebling, Marcio Souza, Robert J Spiegel, Stuart W Peltz, Eugenio Mercuri
BACKGROUND: Duchenne muscular dystrophy (DMD) is a severe, progressive, and rare neuromuscular, X-linked recessive disease. Dystrophin deficiency is the underlying cause of disease; therefore, mutation-specific therapies aimed at restoring dystrophin protein production are being explored. We aimed to assess the efficacy and safety of ataluren in ambulatory boys with nonsense mutation DMD. METHODS: We did this multicentre, randomised, double-blind, placebo-controlled, phase 3 trial at 54 sites in 18 countries located in North America, Europe, the Asia-Pacific region, and Latin America...
July 17, 2017: Lancet
https://www.readbyqxmd.com/read/28690390/integrated-care-of-muscular-dystrophies-in-italy-part-1-pharmacological-treatment-and-rehabilitative-interventions
#2
Luisa Politano, Marianna Scutifero, Melania Patalano, Alessandra Sagliocchi, Antonella Zaccaro, Federica Civati, Erika Brighina, Gianluca Vita, Sonia Messina, Maria Sframeli, Maria Elena Lombardo, Roberta Scalise, Giulia Colia, Maria Catteruccia, Angela Berardinelli, Maria Chiara Motta, Alessandra Gaiani, Claudio Semplicini, Luca Bello, Guja Astrea, Giulia Ricci, Maria Grazia D'Angelo, Giuseppe Vita, Marika Pane, Adele D'Amico, Umberto Balottin, Corrado Angelini, Roberta Battini, Lorenza Magliano
This paper describes the pharmacological therapies and rehabilitative interventions received by 502 patients with Muscular Dystrophies, evaluated in relation to patient's socio-demographic and clinical variables, and geographical areas. Data were collected by the MD-Socio-Demographic and Clinical Schedule (MD-SC-CS) and by the Family Problems Questionnaire (FPQ). The most part of the enrolled patients were in drug treatment. The number of the medications increased in relation to patient's age, disability degree and duration of illness and was higher among patients with Duchenne Muscular Dystrophy (DMD) compared with Becker (BMD) or Limb-Girdle Muscular Dystrophies (LGMD)...
March 2017: Acta Myologica: Myopathies and Cardiomyopathies: Official Journal of the Mediterranean Society of Myology
https://www.readbyqxmd.com/read/28690388/-23-na-mri-and-myometry-to-compare-eplerenone-vs-glucocorticoid-treatment-in-duchenne-dystrophy
#3
Philip A Glemser, Heike Jaeger, Armin M Nagel, Andreas E Ziegler, David Simons, Heinz-Peter Schlemmer, Frank Lehmann-Horn, Karin Jurkat-Rott, Marc-André Weber
In this pilot study we tested whether a low dose application of a mild diuretic substance such as eplerenone is beneficial in early stages of Duchenne muscular dystrophy using (23)Na und (1)H imaging, myometry, and clinical testing versus the glucocorticoid gold standard. Two 7-years old patients with DMD were examined on a 3T MRI system. (1)H MRI and (23)Na density-adapted 3-dimensional radial MRI sequences were performed both before and 1, 3 and 6 months after therapy with eplerenone respectively cortisone...
March 2017: Acta Myologica: Myopathies and Cardiomyopathies: Official Journal of the Mediterranean Society of Myology
https://www.readbyqxmd.com/read/28668906/a-current-approach-to-heart-failure-in-duchenne-muscular-dystrophy
#4
REVIEW
Domenico D'Amario, Antonio Amodeo, Rachele Adorisio, Francesco Danilo Tiziano, Antonio Maria Leone, Gianluigi Perri, Piergiorgio Bruno, Massimo Massetti, Alessandra Ferlini, Marika Pane, Giampaolo Niccoli, Italo Porto, Gianluca A D'Angelo, Josip Anđelo Borovac, Eugenio Mercuri, Filippo Crea
Duchenne muscular dystrophy (DMD) is a genetic, progressive neuromuscular condition that is marked by the long-term muscle deterioration with significant implications of pulmonary and cardiac dysfunction. As such, end-stage heart failure (HF) in DMD is increasingly becoming the main cause of death in this population. The early detection of cardiomyopathy is often challenging, due to a long subclinical phase of ventricular dysfunction and difficulties in assessment of cardiovascular symptomatology in these patients who usually loose ambulation during the early adolescence...
July 1, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28627356/aquatic-therapy-for-children-with-duchenne-muscular-dystrophy-a-pilot-feasibility-randomised-controlled-trial-and-mixed-methods-process-evaluation
#5
Daniel Hind, James Parkin, Victoria Whitworth, Saleema Rex, Tracey Young, Lisa Hampson, Jennie Sheehan, Chin Maguire, Hannah Cantrill, Elaine Scott, Heather Epps, Marion Main, Michelle Geary, Heather McMurchie, Lindsey Pallant, Daniel Woods, Jennifer Freeman, Ellen Lee, Michelle Eagle, Tracey Willis, Francesco Muntoni, Peter Baxter
BACKGROUND: Duchenne muscular dystrophy (DMD) is a rare disease that causes the progressive loss of motor abilities such as walking. Standard treatment includes physiotherapy. No trial has evaluated whether or not adding aquatic therapy (AT) to land-based therapy (LBT) exercises helps to keep muscles strong and children independent. OBJECTIVES: To assess the feasibility of recruiting boys with DMD to a randomised trial evaluating AT (primary objective) and to collect data from them; to assess how, and how well, the intervention and trial procedures work...
May 2017: Health Technology Assessment: HTA
https://www.readbyqxmd.com/read/28624206/crispr-cas9-mediated-genome-editing-corrects-dystrophin-mutation-in-skeletal-muscle-stem-cells-in-a-mouse-model-of-muscle-dystrophy
#6
Pei Zhu, Furen Wu, Jeffrey Mosenson, Hongmei Zhang, Tong-Chuan He, Wen-Shu Wu
Muscle stem cells (MuSCs) hold great therapeutic potential for muscle genetic disorders, such as Duchenne muscular dystrophy (DMD). The CRISP/Cas9-based genome editing is a promising technology for correcting genetic alterations in mutant genes. In this study, we used fibrin-gel culture system to selectively expand MuSCs from crude skeletal muscle cells of mdx mice, a mouse model of DMD. By CRISP/Cas9-based genome editing, we corrected the dystrophin mutation in expanded MuSCs and restored the skeletal muscle dystrophin expression upon transplantation in mdx mice...
June 16, 2017: Molecular Therapy. Nucleic Acids
https://www.readbyqxmd.com/read/28623422/effects-of-omega-3-on-matrix-metalloproteinase-9-myoblast-transplantation-and-satellite-cell-activation-in-dystrophin-deficient-muscle-fibers
#7
Samara Camaçari de Carvalho, Sajedah M Hindi, Ashok Kumar, Maria Julia Marques
In Duchenne muscular dystrophy (DMD), lack of dystrophin leads to progressive muscle degeneration, with DMD patients suffering from cardiorespiratory failure. Cell therapy is an alternative to life-long corticoid therapy. Satellite cells, the stem cells of skeletal muscles, do not completely compensate for the muscle damage in dystrophic muscles. Elevated levels of proinflammatory and profibrotic factors, such as metalloproteinase 9 (MMP-9), impair muscle regeneration, leading to extensive fibrosis and poor results with myoblast transplantation therapies...
June 17, 2017: Cell and Tissue Research
https://www.readbyqxmd.com/read/28609189/a-new-kid-on-the-playground-of-crispr-dmd-therapy
#8
Dongsheng Duan
No abstract text is available yet for this article.
June 2017: Human Gene Therapy. Clinical Development
https://www.readbyqxmd.com/read/28607562/cellular-reprogramming-genome-editing-and-alternative-crispr-cas9-technologies-for-precise-gene-therapy-of-duchenne-muscular-dystrophy
#9
REVIEW
Peter Gee, Huaigeng Xu, Akitsu Hotta
In the past decade, the development of two innovative technologies, namely, induced pluripotent stem cells (iPSCs) and the CRISPR Cas9 system, has enabled researchers to model diseases derived from patient cells and precisely edit DNA sequences of interest, respectively. In particular, Duchenne muscular dystrophy (DMD) has been an exemplary monogenic disease model for combining these technologies to demonstrate that genome editing can correct genetic mutations in DMD patient-derived iPSCs. DMD is an X-linked genetic disorder caused by mutations that disrupt the open reading frame of the dystrophin gene, which plays a critical role in stabilizing muscle cells during contraction and relaxation...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28580208/heart-transplantation-in-patients-with-dystrophinopathic-cardiomyopathy-review-of-the-literature-and-personal-series
#10
REVIEW
Andrea Antonio Papa, Paola D'Ambrosio, Roberta Petillo, Alberto Palladino, Luisa Politano
Cardiomyopathy associated with dystrophinopathies [Duchenne muscular dystrophy (DMD), Becker muscular dystrophy (BMD), X-linked dilated cardiomyopathy (XL-dCM) and cardiomyopathy of Duchenne/Becker (DMD/BMD) carriers] is an increasing recognized manifestation of these neuromuscular disorders and notably contributes to their morbidity and mortality. Dystrophinopathic cardiomyopathy (DCM) is the result of the dystrophin protein deficiency at the myocardium level, parallel to the deficiency occurring at the skeletal muscle level...
May 2017: Intractable & Rare Diseases Research
https://www.readbyqxmd.com/read/28566768/moving-towards-successful-exon-skipping-therapy-for-duchenne-muscular-dystrophy
#11
REVIEW
Akinori Nakamura
Duchenne muscular dystrophy (DMD) is an X chromosome-linked lethal muscular disorder with progressing muscle wasting and weakness caused by mutations in the gene encoding a subsarcolemmal protein dystrophin. For a long time, there was no effective cure; however, advances in molecular biology have allowed the development of radical treatment approaches. Among them, exon-skipping therapy using antisense oligonucleotides is very promising, because it corrects the reading frame of the dystrophin-encoding gene and restores protein expression, resulting in the conversion of DMD to a clinically milder form, Becker muscular dystrophy (BMD)...
June 1, 2017: Journal of Human Genetics
https://www.readbyqxmd.com/read/28555643/development-of-an-orally-available-inhibitor-of-clk1-for-skipping-a-mutated-dystrophin-exon-in-duchenne-muscular-dystrophy
#12
Yukiya Sako, Kensuke Ninomiya, Yukiko Okuno, Masayasu Toyomoto, Atsushi Nishida, Yuka Koike, Kenji Ohe, Isao Kii, Suguru Yoshida, Naohiro Hashimoto, Takamitsu Hosoya, Masafumi Matsuo, Masatoshi Hagiwara
Duchenne muscular dystrophy (DMD) is a fatal progressive muscle-wasting disease. Various attempts are underway to convert severe DMD to a milder phenotype by modulating the splicing of the dystrophin gene and restoring its expression. In our previous study, we reported TG003, an inhibitor of CDC2-like kinase 1 (CLK1), as a splice-modifying compound for exon-skipping therapy; however, its metabolically unstable feature hinders clinical application. Here, we show an orally available inhibitor of CLK1, named TG693, which promoted the skipping of the endogenous mutated exon 31 in DMD patient-derived cells and increased the production of the functional exon 31-skipped dystrophin protein...
May 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28526070/the-golden-retriever-model-of-duchenne-muscular-dystrophy
#13
REVIEW
Joe N Kornegay
Duchenne muscular dystrophy (DMD) is an X-linked disease caused by mutations in the DMD gene and loss of the protein dystrophin. The absence of dystrophin leads to myofiber membrane fragility and necrosis, with eventual muscle atrophy and contractures. Affected boys typically die in their second or third decade due to either respiratory failure or cardiomyopathy. Despite extensive attempts to develop definitive therapies for DMD, the standard of care remains prednisone, which has only palliative benefits. Animal models, mainly the mdx mouse and golden retriever muscular dystrophy (GRMD) dog, have played a key role in studies of DMD pathogenesis and treatment development...
May 19, 2017: Skeletal Muscle
https://www.readbyqxmd.com/read/28505980/creation-of-a-novel-humanized-dystrophic-mouse-model-of-duchenne-muscular-dystrophy-and-application-of-a-crispr-cas9-gene-editing-therapy
#14
Courtney S Young, Ekaterina Mokhonova, Marbella Quinonez, April D Pyle, Melissa J Spencer
Duchenne muscular dystrophy is caused by mutations in DMD which disrupt the reading frame. Therapeutic strategies that restore DMD's reading frame, such as exon skipping and CRISPR/Cas9, need to be tested in the context of the human DMD sequence in vivo. We have developed a novel dystrophic mouse model by using CRISPR/Cas9 to delete exon 45 in the human DMD gene in hDMD mice, which places DMD out-of-frame. We have utilized this model to demonstrate that our clinically-relevant CRISPR/Cas9 platform, which targets deletion of human DMD exons 45-55, can be directly applied in vivo to restore dystrophin...
2017: Journal of Neuromuscular Diseases
https://www.readbyqxmd.com/read/28472288/oxidative-stress-in-duchenne-muscular-dystrophy-focus-on-the-nrf2-redox-pathway
#15
Sara Petrillo, Laura Pelosi, Fiorella Piemonte, Lorena Travaglini, Laura Forcina, Michela Catteruccia, Stefania Petrini, Margherita Verardo, Adele D'Amico, Antonio Musarò, Enrico Bertini
Oxidative stress is involved in the pathogenesis of Duchenne muscular dystrophy (DMD), an X-linked genetic disorder caused by mutations in the dystrophin gene and characterized by progressive, lethal muscle degeneration and chronic inflammation. In this study, we explored the expression and signaling pathway of a master player of the anti-oxidant and anti-inflammatory response, namely NRF2, in muscle biopsies of DMD patients. We classified DMD patients in two age groups (Class I, 0-2 years and Class II, 2-9 years), in order to evaluate the antioxidant pathway expression during the disease progression...
May 3, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28469083/microrna-29-overexpression-by-adeno-associated-virus-suppresses-fibrosis-and-restores-muscle-function-in-combination-with-micro-dystrophin
#16
Kristin N Heller, Joshua T Mendell, Jerry R Mendell, Louise R Rodino-Klapac
Duchenne muscular dystrophy (DMD) is caused by dystrophin deficiency resulting in progressive muscle weakness and fibrotic scarring. Muscle fibrosis impairs blood flow, hampering muscle repair and regeneration. Irrespective of the success of gene restoration, functional improvement is limited without reducing fibrosis. The levels of miR-29c, a known regulator of collagen, are reduced in DMD. Our goal is to develop translational, antifibrotic therapy by overexpressing miR-29c. We injected the gastrocnemius muscle with either self-complementary AAV...
May 4, 2017: JCI Insight
https://www.readbyqxmd.com/read/28450193/developing-standardized-corticosteroid-treatment-for-duchenne-muscular-dystrophy
#17
Michela Guglieri, Kate Bushby, Michael P McDermott, Kimberly A Hart, Rabi Tawil, William B Martens, Barbara E Herr, Elaine McColl, Jennifer Wilkinson, Janbernd Kirschner, Wendy M King, Michele Eagle, Mary W Brown, Tracey Willis, Deborah Hirtz, Perry B Shieh, Volker Straub, Anne-Marie Childs, Emma Ciafaloni, Russell J Butterfield, Iain Horrocks, Stefan Spinty, Kevin M Flanigan, Nancy L Kuntz, Giovanni Baranello, Helen Roper, Leslie Morrison, Jean K Mah, Adnan Y Manzur, Craig M McDonald, Ulrike Schara, Maja von der Hagen, Richard J Barohn, Craig Campbell, Basil T Darras, Richard S Finkel, Giuseppe Vita, Imelda Hughes, Tiziana Mongini, Elena Pegoraro, Matthew Wicklund, Ekkehard Wilichowski, W Bryan Burnette, James F Howard, Hugh J McMillan, Mathula Thangarajh, Robert C Griggs
Despite corticosteroids being the only treatment documented to improve strength and function in boys with Duchenne muscular dystrophy (DMD) corticosteroid prescription is inconsistent and in some countries, corticosteroids are not prescribed. We are conducting a clinical trial that (1) compares the 3 most frequently prescribed corticosteroid regimes; (2) standardizes treatment of DMD complications; and (3) standardizes prevention of corticosteroid side effects. Investigators at 38 sites in 5 countries plan to recruit 300 boys aged 4-7 who are randomly assigned to one of three regimens: daily prednisone; daily deflazacort; or intermittent prednisone (10days on/10days off)...
July 2017: Contemporary Clinical Trials
https://www.readbyqxmd.com/read/28440464/proteomic-profiling-of-mdx-4cv-serum-reveals-highly-elevated-levels-of-the-inflammation-induced-plasma-marker-haptoglobin-in-muscular-dystrophy
#18
Sandra Murphy, Paul Dowling, Margit Zweyer, Michael Henry, Paula Meleady, Rustam R Mundegar, Dieter Swandulla, Kay Ohlendieck
X-linked muscular dystrophy is caused by primary abnormalities in the Dmd gene and is characterized by the almost complete loss of the membrane cytoskeletal protein dystrophin, which triggers sarcolemmal instability, abnormal calcium homeostasis, increased proteolysis and impaired excitation‑contraction coupling. In addition to progressive necrosis, crucial secondary pathologies are represented by myofibrosis and the invasion of immune cells in damaged muscle fibres. In order to determine whether these substantial changes within the skeletal musculature are reflected by an altered rate of protein release into the circulatory system or other plasma fluctuations, we used label‑free mass spectrometry to characterize serum from the mdx‑4cv model of Duchenne muscular dystrophy...
June 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28428530/-duchenne-muscle-dystrophy-caused-bronchial-obstruction
#19
Aki Fujiwara, Nozomu Iwashiro, Masanori Ohara
Duchenne muscle dystrophy (DMD), X-linked recessive genetic disorder, causes a variety of complications including scoliosis. We report a case of bronchial obstruction and hemorrhage caused by scoliosis with DMD. A man in his forties having been hospitalized due to DMD since the age of 6, produced bloody sputum. A chest X-ray showed atelectasis in his right lower lung. A computed tomography and bronchoscopy indicated that scoliosis and thoracic deformity due to muscle dystrophy caused compression of a right main bronchus by the vertebra, leading to bronchial obstruction and bleeding...
April 2017: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/28416280/progress-toward-gene-therapy-for-duchenne-muscular-dystrophy
#20
REVIEW
Joel R Chamberlain, Jeffrey S Chamberlain
Duchenne muscular dystrophy (DMD) has been a major target for gene therapy development for nearly 30 years. DMD is among the most common genetic diseases, and isolation of the defective gene (DMD, or dystrophin) was a landmark discovery, as it was the first time a human disease gene had been cloned without knowledge of the protein product. Despite tremendous obstacles, including the enormous size of the gene and the large volume of muscle tissue in the human body, efforts to devise a treatment based on gene replacement have advanced steadily through the combined efforts of dozens of labs and patient advocacy groups...
May 3, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
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