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  • Title: Neuroprotective effect of methanol extract of Phellodendri Cortex against 1-methyl-4-phenylpyridinium (MPP+)-induced apoptosis in PC-12 cells.
    Author: Jung HW, Jin GZ, Kim SY, Kim YS, Park YK.
    Journal: Cell Biol Int; 2009 Sep; 33(9):957-63. PubMed ID: 19524685.
    Abstract:
    Phellodendri Cortex (PC) is a traditional herbal medicine, widely used in Korea and China. The effects of the methanol extract of Phellodendri Cortex (PC extract) on 1-methyl-4-phenylpyridinium (MPP(+))-induced neuronal apoptosis in PC-12 cells have been investigated. MPP(+)-induced apoptosis in PC-12 cells was accompanied by an increased bax/bcl-2 ratio, release of cytochrome c to the cytosol and activation of caspase-3. PC extract inhibited the downregulation of bcl-2 and the upregulation of bax, as well as the release of mitochondrial cytochrome c into the cytosol. In addition, PC extract attenuated caspase-3 activation and cleavage of poly (ADP-ribose) polymerase (PARP). These results suggest that the PC extract has protective effects against MPP(+)-induced neuronal apoptosis in PC-12 cells.
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