Inherited muscular disorder in mutant Japanese quail (Coturnix coturnix japonica): Relationship between the development of muscle lesions and age

Sarcoplasmic Masses in the Skeletal Muscle of a Stranded Pigmy Sperm Whale (Kogia breviceps)

“…The masses show irregular staining with periodic acid-Schiff (PAS) and do not stain with phosphotungstic acid hematoxylin (PTAH). At the ultrastructural level, they contain irregularly oriented myofibrillar components with bundles of myofibrils trapped in disorganized areas (Braga et al, 1995;Banker and Engel, 2004).…”

“…Sarcoplasmic masses have been observed in normal equine skeletal muscle (Aleman et al, 2005), whereas in humans, they have been observed always in association with various myopathies, such as limb girdle muscular dystrophy, hypothyroid myopathy, and, most frequently, myotonic dystrophy (Banker and Engel, 2004). In animals, SMs have been described in foals (Hegreberg and Reed, 1990) and Japanese quail (Braga et al, 1995) with myotonic dystrophy and in horses with palatal myositis (Blythe et al, 1983).…”