APOE and Alzheimer disease: ↑ mIns, ↑ GPC, and ↓ Glu in APOE e3/e3 samples from AD dementia patients compared to samples from normal control brain samples.↓ NAA in APOE e3/e3 and APOE e4/e4 AD samples from AD dementia patients compared to samples from normal control brains (APOE e3/e3).