Life span, body weight, and motor ability of R6/2 HD mice and their WT under oral B307 and sham treatments.
Notes: (A) Survival durations of R6/2 HD mice were shorter than their WT but were increased under oral B307 treatment. (B) Body weight of R6/2 HD mice was significantly reduced as compared to their WT from 10 weeks of age and thereafter, while it had significantly increased under oral B307 from 10 weeks of age and thereafter. Furthermore, brain (cerebrum plus cerebellum) weight in the R6/2 HD mice had been significantly reduced as compared to their WT from 10 weeks of age and thereafter, while it had significantly increased under oral B307 from 10 weeks of age and thereafter. There were six mice per each group. (C) Latencies to fall in the R6/2 HD mice identified by rotarod testing were significantly lower than their WT from 10 weeks of age and thereafter, while they were significantly increased under oral B307 from 10 weeks of age and thereafter. There were six mice per each group. (D) Heart weight in R6/2 HD mice had been significantly reduced as compared to their WT (N=6) from 10 weeks of age and thereafter, while they were significantly increased under oral B307 from 10 weeks of age and thereafter. There were six mice per each group. Both H&E staining and IHC staining of mHtt aggregation were illustrated in the plot. Expressions of myocarditis (marked by arrows in H&E staining) and mHtt aggregation (marked by arrows in IHC staining) were remarkable in comparison to their WT but were reduced under oral B307 treatment. Values are mean ± SEM (**P<0.01, *P<0.05, two-way ANOVA followed by a Student–Newman–Keuls multiple comparisons posttest).
Abbreviations: WT, wild-type littermate controls; HD, Huntington’s disease; H&E, hematoxylin and eosin; mHtt, mutant huntingtin; IHC, immunohistochemical; SEM, standard error of the mean; ANOVA, analysis of variance.