Blog Archives

Fibrodysplasia ossificans progressiva (FOP) leads to disabling heterotopic ossification (HO) from episodic flare-ups. However, the natural history of FOP flare-ups is poorly understood. A 78-question survey on FOP flare-ups, translated into 15 languages, was sent to 685 classically-affected patients in 45 countries (six continents). Five hundred patients or knowledgeable informants responded (73%; 44% males, 56% … [Read more]

Myostatin (Mstn) is a negative regulator of muscle growth whose inhibition promotes muscle growth and regeneration. Dystrophin-deficient mdx mice in which myostatin is knocked out or inhibited postnatally have a less severe phenotype with greater total mass and strength and less fibrosis and fatty replacement of muscles than mdx mice with wild-type myostatin expression. Dogs … [Read more]

Some patients with myasthenia gravis (MG) do not respond to conventional treatment and have severe or life-threatening symptoms. Alternate and emerging therapies have not yet proved consistently or durably effective. Autologous hematopoietic stem cell transplant (HSCT) has been effective in treating other severe autoimmune neurologic conditions and may have similar application in MG. This retrospective … [Read more]

Therapeutic perspectives raised attention on the development of instruments to accurately evaluate the degree of pathology in patients with facioscapulohumeral muscular dystrophy. This study aimed to analyze the type and extent of muscle involvement on MRI in a large cohort of patients representative of the broad clinical spectrum of this disease. Pelvic and lower limb … [Read more]

Disease severity of childhood Charcot-Marie-Tooth disease (CMT) has not been extensively characterized, either within or between types of CMT to date. This cross-sectional study thus aimed to assess this variability in a large cohort of children and adolescents with CMT. A total of 520 children and adolescents aged 3 to 20 years at 8 universities … [Read more]

A research team from the Institute of Myology, led by Denis Furling (Myotonic Dystrophy, Physiopathology & Biotherapy Team, Myology Centre for Research), has taken part in a collaborative work coordinated by Nicolas Charlet (Institute of Genetics and Molecular and Cellular Biology, Strasbourg) and Masanori Takahashi (Osaka, Japan), which enabled to bring to light the key … [Read more]

In this study, the authors aimed to analyse electromyographic activity, masticatory efficiency, muscle thickness, and bite force of 40 males aged 4-15 years, 20 with Duchenne muscular dystrophy (DMD) and 20 healthy age-, height-, and weight-matched controls. All boys underwent electromyography and ultrasonography of temporalis, masseter, and sternocleidomastoid muscles during postural control of the jaw, … [Read more]

Collagen VI myopathies are genetic disorders due to mutations in collagen 6 A1, 2, and 3 genes, ranging from the severe Ullrich congenital muscular dystrophy to the milder Bethlem Myopathy, which is recapitulated by collagen VI null (Col6a1-/-) mice. Abnormalities in mitochondria and autophagic pathway have been proposed as pathogenic causes of collagen VI myopathies, … [Read more]

Limb girdle muscular dystrophies types 2B (LGMD2B) and 2D (LGMD2D) are degenerative muscle diseases caused by mutations in the dysferlin and alpha-sarcoglycan genes, respectively. Using patient-derived induced pluripotent stem cells (iPSC), the dysferlin nonsense mutation c.5713C>T; p.R1905X and the most common alpha-sarcoglycan mutation, missense c.229C>T; p.R77C, were corrected by single-stranded oligonucleotide-mediated gene editing, using the … [Read more]