BioMedical Research Group Inc.;Macrophi Inc.;Control of Innate Immunity Technology Research Association;National University Corporation Kagawa University
A readily-available brain function-improving agent or food composition having an Aβ intracerebral deposition suppressing effect or a learning function-improving effect is provided based on finding, as a result of orally administering Pantoea LPS to Alzheimer's disease model mice and studying the effects, that oral administration of Pantoea LPS significantly decreased intracerebral Aβ peptide accumulation and improved learning function.