UBB and spinal cord ischemia: Selective motor neuron death, induced by transient spinal cord ischemia associated with trauma or surgery, was found to correlate with redistribution of Aβ, ubiquitin, Uch-L1 and the formation of aggregates of proteins in neuronal cytoplasm and nuclei (Yamauchi et al., 2007; Myeku et al., 2012).