Fig. 7.

a and b (−)-Phen (2.5 mg/kg, i.p.) was administered for 21 consecutive days to rats and mice. Animals were killed within 2 h of their final (−)-Phen dose or saline; a brain (cortex) sample was taken and immediately frozen to –70oC and thereafter analysed for Aβ by ELISA. (−)-Phen significantly (p < 0.05) lowered APP, Aβ (1-40 and 1-42) levels vs. controls. This decline, particularly in Aβ42 levels, was likewise found in wild type mice dosed with (−)-Phen (2.5 mg/kg and 7.5 mg/kg, i.p.) for 21 days [80]