APOE and Huntington disease: Eight-week-old male C57BL/6 and ApoE−/− mice were randomly divided into four groups: C57BL/6 mice fed a normal diet (C57BL/6 group); C57BL/6 mice fed a normal diet + CoQ10 (C57BL/6 + CoQ10 group); ApoE−/− mice fed a high-fat diet (ApoE−/− HD group), and ApoE−/− mice fed a high-fat diet + CoQ10 (ApoE−/− HD + CoQ10 group).