BNIP3 and Parkinson disease: It was found that baicalein could upregulate the levels of NIX and BNIP3 in PD rats (P < 0.001), and overexpression of miR-30b reversed the effect of baicalein on upregulating the levels of NIX and BNIP3 (P < 0.001), suggesting that baicalein had an effect on mitochondrial autophagy by miR-30b and the NIX/BNIP3 signaling pathway.