Distal myopathies
RSS feedExtended-release aceneuramic acid is beneficial in GNE myopathy in Japan
A Japanese multicentre, placebo-controlled phase II/III trial has shown that 6 g/day of extended-release sialic acid for 48 weeks is effective on upper limb muscle strength in GNE myopathy. Of the 19 participants who completed the study, 15 were on sialic acid and four on placebo. The difference in loss of upper limb strength over … [Read more]
Distal Udd titinopathy: a 15-year natural history
A Finnish retrospective study included data from 137 individuals with distal dominant myopathy, linked to the FINmaj mutation in the TTN gene, followed for 15 years. The results show that: the first symptoms appeared before 55 years of age in 109 of them (79.5%) (including five before 35 years of age) and after 55 years … [Read more]
Galectin-1: an innovative therapeutic approach in dysferlinopathies
American researchers have developed a therapy aimed at correcting the phenotypes observed in dysferlinopathies (Miyoshi-type distal myopathy and LGMD type R2). Galectin-1, a beta-like galactoside binding protein, was genetically engineered and injected into model mice: galectin-1 is thought to play a role in membrane repair and inflammation, two mechanisms involved in dysferlinopathies; in treated mice, … [Read more]
The phenotype distinction between Myoshi distal myopathy and LGMD R2 is no longer justifiable in dysferlinopathy
Dysferlinopathy encompasses several clinical entities, having in common a deficit in dysferlin, a protein involved in muscle fibre membrane repair mechanisms. Initially reduced simply to Myoshi distal myopathy, the phenotype spectrum was rapidly extended to pure proximal forms such as limb-girdle muscular dystrophy (LGMD) R2, and especially to mixed proximal/distal forms. Dysferlinopathy is transmitted in … [Read more]
Identification of a slow and gradual decline in muscle strength in GNE myopathy and tailored tools to evaluate it
Characterised by distal muscle weakness, GNE myopathy (also known as Nonaka myopathy, hereditary inclusion body myositis, distal myopathy with rimmed vacuoles or quadriceps-sparing myopathy) is caused by abnormalities in the GNE gene, which codes an enzyme involved in sialic acid biosynthesis. To date, only two natural history studies of this disease have been published, one … [Read more]
