Induction of apoptosis in human glioma cell lines of various grades through the ROS-mediated mitochondrial pathway and caspase activation by Rhaponticum carthamoides transformed root extract |
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Authors: | Ewa Skała Tomasz Kowalczyk Monika Toma Janusz Szemraj Maciej Radek Dariusz Pytel Joanna Wieczfinska Halina Wysokińska Tomasz Śliwiński Przemysław Sitarek |
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Affiliation: | 1.Facultad de Ciencias Exactas y Naturales,Universidad de Buenos Aires,Buenos Aires,Argentina;2.CONICET-Universidad de Buenos Aires,Buenos Aires,Argentina;3.Departamento de Química Biológica, Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales (IQUIBICEN),CONICET-Universidad de Buenos Aires,Buenos Aires,Argentina;4.Instituto de Biodiversidad y Biología Experimental y Aplicada (IBBEA),CONICET-Universidad de Buenos Aires,Buenos Aires,Argentina;5.IBBEA-UBA/CONICET, Intendente Güiraldes,Buenos Aires,Argentina |
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Abstract: | The placenta plays a major role in embryo-fetal defects and intrauterine growth retardation after maternal alcohol consumption. Our aims were to determine the oxidative status and cellular and molecular oxidative stress effects on uterine myometrium and trophoblast-decidual tissue following perigestational alcohol intake at early organogenesis. CF-1 female mice were administered with 10% alcohol in drinking water for 17 days prior to and up to day 10 of gestation. Control females received ethanol-free water. Treated mice had smaller implantation sites compared to controls (p < 0.05), diminished maternal vascular lumen, and irregular/discontinuous endothelium of decidual vessels. The trophoblast giant cell layer was disorganized and presented increased abnormal nuclear frequency. The myometrium of treated females had reduced nitrite content, increased superoxide dismutase activity, and reduced glutathione (GSH) content (p < 0.05). However, the trophoblast-decidual tissue of treated females had increased nitrite content (p < 0.05), increased GSH level (p < 0.001), increased thiobarbituric acid-reactive substance concentration (p < 0.001), higher 3-nitrotyrosine immunoreaction, and increased apoptotic index (p < 0.05) compared to controls. In summary, perigestational alcohol ingestion at organogenesis induced oxidative stress in the myometrium and trophoblast-decidual tissue, mainly affecting cells and macromolecules of trophoblast and decidual tissues around early organogenesis, in CF-1 mouse, and suggests that oxidative-induced abnormal early placental formation probably leads to risk of prematurity and fetal growth impairment at term. |
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