Effects of Royal Jelly Peptide on Motor Ability and Gene Expression in Zebrafish Model of Alzheimer's Disease

Objective: Investigation of the trait improvement impact of royal jelly enzymatic products (royal jelly peptides) on Alzheimer's disease (AD) model zebrafishes. Methods: 150 wild-type AB strain zebrafishes (4 days after fertilization, 4 dpf) were randomly divided into normal group, model control group, donepezil hydrochloride positive control group (3.33 μg/mL), royal jelly enzymatic digest lyophilized powder-1 group (LPR-1, 1000 μg/mL) and royal jelly enzymatic digest lyophilized powder-2 group (LPR-2, 1000 μg/mL), and these groups were added in 6-well plates, respectively. The volume of each well was 3 mL, and 30 tails of zebrafishes were employed in each group. Except for the normal group, zebrafishes in other groups were treated with aluminum chloride hexahydrate (180 μmol/L) to establish AD models. The efficacy of recovery of motor dysfunction, improvement of responsiveness, inhibition of acetylcholinesterase (AchE) and inhibition of apoptosis were evaluated for each experimental group after treated with