With respect to the degeneration of motor neuron systems, the severity of motor neuron loss in the primary motor cortex, facial and hypoglossal nuclei and spinal anterior horns, myelin pallor within the CST and aggregation of macrophages within the primary motor cortex and CST were evaluated.
The cases exhibit a wide range in the number of neurons containing Lewy bodies as well as the severity of neuronal loss (Table S2).
It has been used to predict the severity of motor neuron disease [117], identify high risk patients [118], and predict the risk of readmission for congestive heart failure patients [119].
The effect of NF-κB deficiency in glial cells on severity of motor neuron disease was examined using cohorts of GFAP-IκBαAA (indicated as Tg), SOD1G93A (indicated as G93A) and GFAP-IκBαAA/SOD1G93A (indicated as double Tg) transgenic mice.
Second, Vegfa /120 mutants retain VEGF120, but VEGF120 did not rescue the GnRH neuron survival defect caused by loss of VEGF164, as the severity of the GnRH neuron survival defect was similar in Vegfa /120 mutants and NRP1 knockouts.
The severity of upper motor neuron involvement was semiquantitatively compared between the clinical groups, and quantitatively surrogated by axonal densities in the corticospinal tract.
These notions raise the possibility that microtubule bound tau may partially contribute to tau pathogenesis in DA neurons due to its association with severity of phenotype in DA neurons; they are consistent with the concept that tau can compete with microtubule motor proteins and lead to the detachment of motor proteins (kinesin and dynein), which may lead to abnormal axonal trafficking [ 51].
In the hippocampus, there were also significant differences in the severity of HSP27 rating for neurons of CA4 (F(3, 154) =17.8, P =0.000) region and for glial cells (F 3, 154) =14.9, P =0.002) and granule cells of dentate gyrus (F 3, 154) =11.8, P =0.008).
The severity of HSP27 immunoreactivity in neurons and glial cells in the different brain regions in all four diagnostic groups was compared by Kruskal-Wallis test, with post hoc Mann-Whitney testing where significant.
However, the connection between large amyloid plaques and AD is unlikely to be direct as the correlation between the extent of plaque formation and either the severity of dementia or the loss of neurons is poor.
