MAPT and Alzheimer disease: Our study aimed to explore the cross-sectional relationships between FBG and CSF biomarkers of neurodegeneration [CSF Aβ42, Aβ40, phosphorylated-tau (P-tau), and total-tau (T-tau)] usually implicated in the development of AD in non-diabetic cognitively normal elders gathered from Qingdao, China.