BMAL1 and Parkinson disease: In a 6-OHDA (6-hydroxydopamine)-induced Parkinson’s disease cell model, dihydroisotanshinone I, a compound derived from Danshen (Salvia miltiorrhiza), attenuated cell death, suppressed ROS and caspase-3 activity, and increased SIRT1 expression while reducing BMAL1 levels and apoptosis [121].