A) Supraphysiologic 17β-estradiol (E2) treatment at time of reperfusion
resulted in a significantly smaller total lesion volume compared to placebo (P)
treated animals (27% vs. 4%, *p = 0.007, Mann-Whitney U test). The dot plot of
lesion volumes for individual animals reveals non-normal distribution among the
E2 treatment group, which is comprised of high and low responding animals. B)
Striatal lesion volume was significantly smaller with E2 treatment (46% vs. 31%,
#p = 0.006, unpaired t-test). C) E2 treatment also significantly decreased
cortical lesion volume (49% vs. 0%, ^p = 0.003 Gaussian approximation,
Mann-Whitney U test). Median values and 25th-75th
percentile are represented in A and C, with mean ± sd for B.