

Table 1: Determination of fluorescence levels in brain tissue slices using MATLAB image processing. Statistically significant difference (ANOVA, p<0.01) compared with
data obtained after administrations at the same dose regimen of nasal aqueous solutionS1 and IV aqueous solutionS^{2}. 1x1d = 24 hours after 1 application; 2x1d = 24 hours after 2 applications at t=0 and 12h; 3x1d = 24 hours after 3 applications at t=0, 8h, and 16h; 1x1d for 5d= at day 5 after 5 daily applications. 