News

Advocates Step Up to Mark SMA Awareness Month in US

For most of his life, Jose Flores avoided interacting with the spinal muscular atrophy (SMA) community because he felt out of touch with it. An SMA type 4 patient, Flores didn’t need a wheelchair until he was 22, and found it difficult emotionally to see children who weren’t…

Muscle Twitches Detected by Ultrasound May Aid Late Diagnosis

Muscle fasciculations, or twitches, in adolescents and adults with later onset forms of spinal muscle atrophy (SMA) were detected best with a muscle ultrasound, a study concluded. Muscle ultrasound combined with a physical examination is useful for screening adolescents and adults with weakness in muscles closest to the center…

Molecular Feedback Loop May Explain Motor Neuron Damage

The RNA-binding protein Mid1 increases levels of the mutated androgen receptor (AR) that drives nerve cell degeneration in spinal and bulbar muscular atrophy (SBMA), a new study shows. Since Mid1 is expressed mainly in lower motor neurons, the nerve cells mainly affected in SBMA, the study’s researchers proposed that…

Mouse Models Show Neuromuscular Junction Alterations in SBMA

Scientists have revealed specific alterations to the neuromuscular junction (NMJ) — the place where nerves connect to the muscle they control — in fast-twitch muscle fibers in two mouse models of spinal and bulbar muscular atrophy (SBMA). The team also provided evidence for metabolic impairment and muscle fiber atrophy…