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  • Title: Mono-2-ethylhexyl phthalate induced loss of mitochondrial membrane potential and activation of Caspase3 in HepG2 cells.
    Author: Chen X, Wang J, Qin Q, Jiang Y, Yang G, Rao K, Wang Q, Xiong W, Yuan J.
    Journal: Environ Toxicol Pharmacol; 2012 May; 33(3):421-30. PubMed ID: 22387354.
    Abstract:
    L02 and HepG2 cells were exposed to mono-(2-ethylhexyl) phthalate (MEHP) at concentrations of 6.25-100μM. After 48h treatment, MEHP decreased HepG2 cell viability in a concentration-dependent manner and L02 cell viability in the 50 and 100μM groups (p<0.01). Furthermore, at 24 and 48h after treatment, MEHP decreased the glutathione levels of HepG2 cells in all treatment groups and in the ΔΨ(m) in L02 and HepG2 cells with MEHP≥25μM (p<0.05 or p<0.01). At 24h after treatment, MEHP induced activation of caspase3 in all treated HepG2 and L02 cells (p<0.05 or p<0.01) except the 100μM MEHP treatment group. The increase in the Bax to Bcl-2 ratio suggests that Bcl-2 family involved in the control of MEHP-induced apoptosis in these two cell types. The data suggest that MEHP could induce apoptosis of HepG2 cells through mitochondria- and caspase3-dependent pathways.
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