Abstract
To investigate the effects and underlying mechanism of notoginsenoside R1 on amyloid-β (1-42) (Aβ(1-42)) induced mitochondrial apoptotic death in SH-SY5Y cells. Cell viability was assayed by MTT, apoptotic rates were analyzed with PI/Annexin V flow cytometry, Bax and Bcl-2 expression were detected with Western blotting, enzymatic activity of caspase-3, caspase-8 and caspase-9 were measured by ELISA assay. The 6.25-100 nmol x L(-1) of notoginsenoside R1 attenuate Aβ(1-42) induced apoptotic death of SH-SY5Y in dose dependent manner. The ratio of Bcl-2/Bax was elevated in SH-SY5Y with notoginsenoside R1 treatment. Caspase-3 and caspase-9 were activated with notoginsenoside R1 treatment while caspase-8 was not affected. Notoginsenoside R1 could protect SH-SY5Y cells from Aβ(1-42) induced apoptosis via mitochondria related apoptotic pathway.
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