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result sql = Zinc induced apoptosis in HEP-2 cancer cells: the role of oxidative stress and mitochondria.
Zinc induced apoptosis in HEP-2 cancer cells: the role of oxidative stress and mitochondria.
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char = s;code = 115
char = ;code = 32
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char = e;code = 101
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char = c;code = 99
char = u;code = 117
char = t;code = 116
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char = ;code = 32
char = b;code = 98
char = y;code = 121
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char = s;code = 115
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char = s;code = 115
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char = -;code = 45
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char = e;code = 101
char = n;code = 110
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char = ;code = 32
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char = h;code = 104
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result sql = Induction of apoptosis by zinc sulfate was investigated during 96 h exposure on the cancer Hep-2 cell line. During 48 h of exposure, zinc translocated into mitochondria and stimulated production of reactive oxygen species (ROS), affected cellular GSH management and induced moderate activation of p53 and dissipation of mitochondrial membrane potential. In Zn-exposed cells, mitochondria released cytochrome c and AIF, whose translocation to the cytoplasm or the nucleus coincided with the activation of apoptosis. The use of various pharmacological inhibitors inhibiting particular apoptotic targets (antioxidants such as N-acetyl-cysteine and coenzyme Q, the caspase inhibitors z-DEVD-fmk and z-VAD-fmk, cyclosporin A and bonkgrekic acid) proved that Zn acts both directly and indirectly on mitochondria and observed apoptosis is executed by caspase-dependent and caspase-independent pathways.

Publication: Biofactors 2005 ;23(2)::107-20.
Publication Date: 2005
Study Author(s): Rudolf, Emil;Rudolf, Kamil;Cervinka, Miroslav;
Institution: Department of Medical Biology and Genetics, Charles University in Prague, Faculty of Medicine in Hradec Kralove, Simkova 870, Hradec Kralove I, 500 38, Czech Republic. [email protected]
Shortcut link to this study:
Induction of apoptosis by zinc sulfate was investigated during 96 h exposure on the cancer Hep-2 cell line. During 48 h of exposure, zinc translocated into mitochondria and stimulated production of reactive oxygen species (ROS), affected cellular GSH management and induced moderate activation of p53 and dissipation of mitochondrial membrane potential. In Zn-exposed cells, mitochondria released cytochrome c and AIF, whose translocation to the cytoplasm or the nucleus coincided with the activation of apoptosis. The use of various pharmacological inhibitors inhibiting particular apoptotic targets (antioxidants such as N-acetyl-cysteine and coenzyme Q, the caspase inhibitors z-DEVD-fmk and z-VAD-fmk, cyclosporin A and bonkgrekic acid) proved that Zn acts both directly and indirectly on mitochondria and observed apoptosis is executed by caspase-dependent and caspase-independent pathways.
PMID: 16179752

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