It has been reported that the SIRT1 agonist resveratrol protects C. elegans neurons expressing a fragment of the Huntington disease-associated protein huntingtin and mammalian neurons from mutant polyglutamine cytotoxicity in a HdhQ111 knock-in mouse model of Huntington disease (Dali-Youcef et al., 2007). This evidence concerns the gene SIRT1 and Huntington disease.