Topical Area: Aging and Chronic Disease, Nutrition Translation. Nutrient-Gene Interactions, Carotenoids and Retinoids (CARIG)
Objectives : An intervention study was performed to determine if supplement containing blueberry extracts could improve cognitive function in the elderly patients with mild cognitive impairment (MCI) .
Methods : Forty six MCI patients participated in the intervention study were paired based on their age, education level and initial the basic cognitive aptitude test (BCAT) scores and then randomly assigned to the intervention group (n=23,which received 1.0g/day of blueberry extracts) or blank control group (n=23) . The endpoint was the improvement in cognitive function as evaluated by BCATs. All parameters were measured before and after the treatment period of 12 weeks.
Results : After 12 weeks of intervention, we observed significant improvement in their total BCAT score, space imagery efficiency, working memory and recognition memory of subjects in patients with blueberry extracts supplementation comparing to those in the control group (P=0.006, 0.023, 0.000, 0.005, respectively). However the levels of inflammatory factors (IL-6 and TNF-α in serum) showed no significant changes after intervention.
Conclusions : The data indicated that blueberry has a beneficial effect on cognitive function of the elderly MCI patients, which might provide therapeutic potential for Alzheimer’s disease.
Funding Sources : This work was supported by the State Key Program of National Natural Science Foundation of China and the State Key Program of National Natural Science Foundation of Tianjin.