Blog Archives

A new penetrant and specific test to diagnose Giant Axonal Neuropathy

The BTB-KELCH protein Gigaxonin plays key roles in sustaining neuron survival and cytoskeleton architecture. Indeed, recessive mutations in the Gigaxonin-encoding gene cause Giant Axonal Neuropathy (GAN), a severe neurodegenerative disorder characterized by a wide disorganization of the Intermediate Filament network. Growing evidence suggests that GAN is a continuum with the peripheral neuropathy Charcot-Marie-Tooth diseases type … [Read more]

First human SMA gene transfer therapy trial opens

A phase I, single-site, dose escalation study to evaluate the safety and efficacy of gene transfer therapy in infants with for Spinal Muscular Atrophy Type 1 (SMA1) who are 9 months old or younger has opened at Nationwide Children’s Hospital in Columbus, Ohio. A total of nine patients will be randomly assigned to receive either … [Read more]

Effect of 2-year steroid treatment on body composition in Duchenne muscular dystrophy

Steroids are nowadays routinely used as a long-term treatment in Duchenne muscular dystrophy (DMD). Their effects on body composition were assessed using dual X-ray absorptiometry. This study followed over 2 years 29 genetically confirmed DMD patients: 21 in the steroid-treated group and 8 in the steroid-naïve group. After 2 years of steroid treatment, the lean … [Read more]

Complementary and alternative medicine for Duchenne and Becker Muscular Dystrophies

Complementary and alternative medicine is frequently used in the management of chronic pediatric diseases, but little is known about its use by those with Duchenne or Becker muscular dystrophy. Complementary and alternative medicine use by male patients with Duchenne or Becker muscular dystrophy and associations with characteristics of male patients and their caregivers were examined … [Read more]

Congenital muscular dystrophy and generalized epilepsy caused by GMPPB mutations

The alpha-dystroglycanopathies are genetically heterogeneous muscular dystrophies that result from hypoglycosylation of alpha-dystroglycan (α-DG). Alpha-dystroglycan is an essential link between the extracellular matrix and the muscle fiber sarcolemma, and proper glycosylation is critical for its ability to bind to ligands in the extracellular matrix. Here, the authors sought to identify the genetic basis of alpha-dystroglycanopathy … [Read more]

First meta-analysis of worldwide prevalence estimates for muscular dystrophies

The muscular dystrophies are a broad group of hereditary muscle diseases with variable severity. Population-based prevalence estimates have been reported but pooled estimates are not available. Here, the authors performed a systematic review of worldwide population-based studies reporting muscular dystrophies prevalence and/or incidence using MEDLINE and EMBASE databases. The search strategy included key terms related … [Read more]

Phenotypic spectrum and incidence of TRPV4 mutations in patients with inherited axonal neuropathy

This study aimed to clarify the phenotypic spectrum and incidence of TRPV4 mutations in patients with inherited axonal neuropathies. The authors screened for TRPV4 mutations in 169 French unrelated patients with inherited axonal peripheral neuropathy. Ninety-five patients had dominant Charcot-Marie-Tooth type 2 (CMT2) disease, and 74 patients, including 39 patients with distal hereditary motor neuropathy, … [Read more]

Skeletal muscle damage precedes pathology in spinal cord in a mouse model of SMA

Spinal Muscular Atrophy (SMA) is a hereditary childhood disease that causes paralysis by progressive degeneration of skeletal muscles and spinal motor neurons. SMA is associated with reduced levels of full-length Survival of Motor Neuron (SMN) protein, due to mutations in the Survival of Motor Neuron 1 gene. The mechanisms by which lack of SMN causes … [Read more]

Plasma microRNAs as biomarkers for DM1

Myotonic dystrophy type 1 (DM1) lacks non-invasive and easy to measure biomarkers, still largely relying on semi-quantitative tests for diagnostic and prognostic purposes. Muscle biopsies provide valuable data, but their use is limited by their invasiveness. microRNA (miRNAs) are small non-coding RNAs regulating gene expression that are also present in biological fluids and may serve … [Read more]

Immunological profile of mesoangioblasts: implications for allogeneic cell therapy of DMD

Stem cell therapy is a promising approach to regenerate healthy tissues starting from a limited amount of self-renewing cells. Immunological rejection of cell therapy products might represent a major limitation. This study investigated the immunological functional profile of mesoangioblasts, vessel-associated myogenic stem cells, currently tested in a phase I-IIa trial for the treatment of Duchenne … [Read more]