Mean nuclei area and number of neurons in the CA3 region of the dorsal hippocampus. (A) Significant changes in the mean number of neurons of the CA3 region (one-way ANOVA test, p ≤ 0.001). ‘*’ and ‘**’ are significantly decreased (p = 0.001 and 0.017, respectively). (B) Significant changes in the mean nuclei area in the CA3 region between the groups (Kruskal–Wallis test, p ≤ 0.005). ‘#’ DB vs. NC, ‘##’ DB vs. AV and ‘***’ DB vs. DAV are significantly increased (p = 0.041, 0.016 and 0.0001, respectively). ‘*’ DAV vs. NC is significantly reduced (p = 0.045). Circles indicates boundaries of the neuronal nuclei, and squares indicate the specific area from which micrographs were taken and measurements made. Scale bar = 15 µm, n = 6. Key: NC, Controls; AV, cART only; DB, Diabetic; DAV, diabetic with cART.