Effect of REST in the Alzheimer Disease Continuum

Repressor element silencing transcription factor(REST), also known as neuron-restrictive silencer factor (NRSF) is a zinc finger protein of 121 kD and belongs to the Gli-Kruppel family with transcriptional regulation.This will be a Case-Crossover research. Consecutive participants will be divided into Alzheimer's disease dementia group, mild cognitive impairment due to Alzheimer's disease group and normal control group according to inclusion criteria of this research. Peripheral blood samples will be retained to detect REST gene polymorphisms and protein concentrations. Participants perform neuropsychological tests to assess cognitive function. Medial temporal atrophy scale is used to describe hippocampus. Differences in the mean or proportions between these 3 groups will be checked by t test or test. The relationship between REST protein concentration and cognitive function will be estimated, as well as the relationship between REST protein concentration and hippocampus.