Protection against beta-amyloid peptide toxicity in vivo with long-term administration of ferulic acid

British Journal of Pharmacology
J J YanD K Song

Abstract

1. beta-Amyloid peptide (A beta), a 39 -- 43 amino acid peptide, is believed to induce oxidative stress and inflammation in the brain, which are postulated to play important roles in the pathogenesis of Alzheimer's disease. Ferulic acid is an antioxidant and anti-inflammatory agent derived from plants; therefore, the potential protective activity of ferulic acid against A beta toxicity in vivo was examined. 2. Mice were allowed free access to drinking water (control) or water containing ferulic acid (0.006%). After 4 weeks, A beta 1-42 (410 pmol) was administered via intracerebroventricular injection. 3. Injection of control mice with A beta 1-42 impaired performance on the passive avoidance test (35% decrease in step-through latency), the Y-maze test (19% decrease in alternation behaviour), and the water maze test (32% decrease in percentage time in platform-quadrant). In contrast, mice treated with ferulic acid prior to A beta 1-42 administration were protected from these changes (9% decrease in step-through latency; no decrease in alternation behaviour; 14% decrease in percentage time in platform-quadrant). A beta 1-42 induced 31% decrease in acetylcholine level in the cortex, which was tended to be ameliorated by ferulic ac...Continue Reading

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