Muscular Dystrophy News -- ScienceDaily

Muscular Dystrophy News -- ScienceDaily
  • Stem cells police themselves to reduce scarring
    Stem cells produce a decoy protein to attenuate growth signals. Artificially regulating this pathway might help keep muscles supple in muscular dystrophy or during normal aging, researchers hope.
  • DNA damage response links short telomeres, heart disorder in Duchenne muscular dystrophy
    Telomeres shorten without cell division in a mouse model of Duchenne muscular dystrophy, new research shows. Subsequent DNA damage responses and mitochondrial dysfunction are likely cause of heart failure.
  • A vitamin could help treat Duchenne muscular dystrophy
    Researchers are working on a new strategy to combat one of the most severe forms of muscular dystrophy. Rather than acting on the defective gene, they are using large doses of a vitamin.
  • Scientists speed up muscle repair
    Athletes, the elderly and those with degenerative muscle disease would all benefit from accelerated muscle repair. When skeletal muscles, those connected to the bone, are injured, muscle stem cells wake up from a dormant state and repair the damage. When muscles age, however, stem cell number and function declines, as do both tissue function and regenerative ability. A new study investigated muscle stem cell pool size. In particular, they asked if stem cell number could be increased, and if there would be any associated functional benefits.
  • Curing inherited disease by running a stop sign
    New insight has been gained into the mechanism of action of the drug ataluren, which is showing promise in treating Duchenne muscular dystrophy and cystic fibrosis.
  • Childhood muscular fitness and adult metabolic syndrome
    About 20-25 percent of adults have the metabolic syndrome and have increased risk of developing both cardiovascular disease and type 2 diabetes. In a new longitudinal study, investigators examined associations between childhood muscular fitness (strength, endurance, and power) and metabolic syndrome -- the latter assessed once they reached adulthood.
  • New views of intracellular channel that controls skeletal muscle
    New details of the structure and function of an intracellular channel that controls the contraction of skeletal muscle have been uncovered by new research. The findings could lead to new treatments for a variety of muscle disorders.
  • Eteplirsen approved in US for treatment of duchenne muscular dystrophy
    The U.S. Food and Drug Administration has decided to grant accelerated approval for eteplirsen, the first disease-modifying drug to treat the most common childhood form of muscular dystrophy.
  • Study could herald new treatment for muscular dystrophy
    New research has shown that the corticosteroid deflazacort is a safe and effective treatment for Duchenne muscular dystrophy. The findings could pave the way for first US-approved treatment for the disease.
  • Helper molecule reverses degeneration of muscle in mouse model of tissue aging, wasting
    Maintaining proper levels of an essential helper molecule is crucial for optimal muscle function. Some athletes are already taking supplements to increase synthesis of this compound, called NAD, with the hopes of reversing the natural decay associated with aging of the mitochondria, the cell's powerhouses. However, this is the first study to directly investigate the consequences of NAD deficiency on muscle function.
  • Gene therapy developed for muscle wasting
    A discovery could save millions of people suffering from muscle wasting disease.
  • Gene controls regeneration of injured muscle by adult stem cells
    A key gene enables the repair of injured muscle throughout life, according to a study in mice. The study results further suggest that this "overlooked" gene may play an important role in sarcopenia, the loss of muscle tissues with age.
  • Protein found to bolster growth of damaged muscle tissue
    Biologists have found that a protein that plays a key role in the lives of stem cells can bolster the growth of damaged muscle tissue, a step that could contribute to treatments for muscle degeneration caused by old age or muscular dystrophy.
  • New method to grow and transplant muscle stem cells holds promise for treatment of muscular dystrophy
    Satellite cells are stem cells found in skeletal muscles. While transplantation of such muscle stem cells can be a potent therapy for degenerative muscle diseases such as Duchenne muscular dystrophy, these cells tend to lose their transplantation efficiency when cultured in vitro. Researchers treated these stem cells with leukemia inhibitory factor, which effectively maintained the undifferentiated state of the satellite cells and enhanced their transplantation efficiency.
  • Cause of heart arrhythmia in adult muscular dystrophy clarified
    The cause of heart arrhythmia in myotonic dystrophy was RNA abnormalities in the sodium channel in the heart, clarifying the symptom's mechanism, an international joint research group found. This finding will be helpful in prevention and early intervention of death in this disease, leading to the development of new treatment.