Effects of Pre-Germinated Brown Rice on β-Amyloid Protein-Induced Learning and Memory Deficits in Mice

Takayoshi Mamiya, Takamasa Asanuma, Mitsuo Kise, Yukihiko Ito, Aya Mizukuchi, Hiromichi Aoto, Makoto Ukai
2004 Biological and Pharmaceutical Bulletin  
We evaluated the effects of pre-germinated brown rice (hatsuga genmai, PGR) on learning and memory and compared them with those of polished rice or cornstarch. In mice that were fed pellets of polished rice or PGR for two weeks, the learning ability in the Morris water maze test was significantly enhanced compared with mice that were fed cornstarch pellets. In the Y-maze test, the intake of food pellets for two weeks failed to affect spontaneous alternation behavior. b b-Amyloid 25-35 (Ab b
more » ... 5 : 3 nmol/mouse, i.c.v.) protein impaired spontaneous alternation behavior in mice that were fed pellets of cornstarch or polished rice. In contrast, PGR pellets prevented the Ab b 25-35 -induced impairment of spontaneous alternation behavior. These results suggest that polished rice and PGR have facilitating effects on spatial learning. In particular, it is surmised that PGR may prevent Alzheimer's disease associated with Ab b.
doi:10.1248/bpb.27.1041 pmid:15256737 fatcat:juril3pyq5bjzavkxkjhuap2zy