Journal: Brain Pathology
Article Title: Accumulation of misfolded SOD1 outlines distinct patterns of motor neuron pathology and death during disease progression in a SOD1 G93A mouse model of amyotrophic lateral sclerosis
doi: 10.1111/bpa.13078
Figure Lengend Snippet: C‐type synaptic boutons and mfSOD1 MN phenotypes in SOD1 G93A mice. (A) C‐type synapses in MN somata (delimited by a line drawn on a not shown Nissl image) were analyzed after labeling their postsynaptic and presynaptic compartments to visualize NRG1 (green) and VAChT (red), respectively, in WT and P60 SOD1 G93A , as indicated. C‐Bouton imaging was merged with mfSOD1 immunostaining (gray) to identify the three MN phenotypes. (B) Changes in the size of pre‐ and postsynaptic components of C‐boutons evaluated at distinct disease ages in relation to MN mfSOD1 phenotypes vs control. (C) Effects of treatments with the M2 muscarinic cholinergic receptor agonist (oxotremorine, ox) or antagonist (methoctramine, meth) of P60 SOD1 G93A mice on the expression of mfSOD1 and C‐Bouton size 15 days after treatment. Sample sizes were as follows: WT, n = 193; SOD1 G93A , n = 219; ox, n = 167; meth, n = 202; n = synapse number s from 3 animals. One‐way ANOVA: p < 0.0001, ox vs. control; p < 0.01, meth vs. control data for presynaptic C‐Bouton density were as follows: WT, n = 37; SOD1 G93A , n = 59; ox, n = 46; meth, n = 24 VAChT‐positive puncta/100 μm 2 ; n = number of MNs from 3 animals. * p < 0.05, ** p < 0.01, *** p < 0.001, **** p < 0.0001, one‐way ANOVA, Bonferroni's post hoc test. Scale bar: (A) = 20 μm.
Article Snippet: NRG1 1α /β 1/2 , Rabbit polyclonal , Santa Cruz (sc‐348) , 1:300.
Techniques: Labeling, Imaging, Immunostaining, Control, Expressing