... all the research staffs, research nurses, and the elderly participants of the Singapore Longitudinal Ageing Study (SLAS), the staffs in the Department of Psychological Medicine National University ... National University of Singapore, for all your helps, supports, and instructions in the past six years I would also like to thank to the National University of Singapore, for awarding me the Research ... regulating the transport of cholesterol and the metabolism of lipoprotein particles (41-42) The ε4 allele of APOE is the only confirmed genetic risk factor for AD (40) The interaction of APOE and the...