MAPT and Parkinson disease: Although the improvement of memory ability by the ingestion of these samples was minor, the ingestion of these samples downregulated the expression of the hippocampus brain acid-soluble protein 1, microtubule-associated protein tau, syanpsin-2 and sodium- and chloride-dependent GABA transporter, and tended to downregulate the expression of Parkinson’s disease 7 and synapsin-1.