Progress toward the development of treatment of spinal and bulbar muscular atrophy
2017
ABSTRACTIntroduction: With greater longevity, the prevalence of neurodegenerative diseases including Alzheimer’s disease, Parkinson’s disease, and amyotrophic lateral sclerosis is increasing, but these diseases remain intractable. This is also the case for a hereditary motor neuron disease, spinal and bulbar muscular atrophy or SBMA.Areas covered: SBMA typically affects adult males, eliciting motor deficits due to progressive loss of lower motor neurons, while females do not manifest neurological signs. It results from a CAG-trinucleotide repeat expansion in the androgen receptor or AR gene which is translated into an expanded polyglutamine tract within the encoded protein. Ligand-dependent nuclear accumulation of the mutant AR is implicated to lead to transcriptional dysregulation and subsequent defects in pivotal cellular functions, causing motor neuron death.Expert opinion: Even though the pathogenesis has not been fully understood, recent advances especially in the dissection of pathomechanisms associ...
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