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• W1987996845 abstract "Cadmium (Cd(2+)) is an ubiquitous toxic metal that is involved in a variety of pathological conditions. Several reports indicate that Cd(2+) alters normal pituitary hormone secretion; however, little is known about the mechanisms that induce this misregulation. This paper reports the effect of Cd(2+) on anterior pituitary cell viability and its relation to prolactin secretion. Cd(2+) concentrations above 10 microM were found to be cytotoxic for pituitary cells. Morphological studies as well as DNA ladder fragmentation and caspase activation showed that Cd(2+)-treated cells undergo apoptosis. Even though several hours were needed to detect Cd(2+)-induced cytotoxicity, the effect of the metal became irreversible very quickly, requiring only 3 h of treatment. Prolactin release (measured at 48 h) was inhibited when the cells were exposed to Cd(2+) for 1 h, before any change in cell viability was observed. The antioxidants N-acetyl-cysteine and Trolox (a hydrosoluble derivative of vitamin E), but not ascorbic acid, reversed both Cd(2+)-mediated cytotoxicity and the inhibition of prolactin release, supporting the involvement of oxidative stress in the mechanism of Cd(2+) action. In summary, the present work demonstrates that Cd(2+) is cytotoxic for anterior pituitary cells, that this effect is due to an induction of apoptosis, and that it can be reversed by antioxidants." @default.
• W1987996845 created "2016-06-24" @default.
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• W1987996845 date "2003-07-01" @default.
• W1987996845 modified "2023-09-27" @default.
• W1987996845 title "Cadmium induces apoptosis in anterior pituitary cells that can be reversed by treatment with antioxidants" @default.
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• W1987996845 doi "https://doi.org/10.1016/s0041-008x(03)00191-1" @default.
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