Cellular and molecular oxidative stress-related effects in uterine myometrial and trophoblast-decidual tissues after perigestational alcohol intake up to early mouse organogenesis
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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.
KeywordsPlacenta Decidua Oxidative stress Cellular and tissue damage Mouse organogenesis Perigestational alcohol
This work was supported by the Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) (PIP-CONICET, Grant Numbers: 114-200801-00014 and 11220090100492); the Agencia Nacional de Promoción Científica y Tecnológica (Grant Number BID-PICT-2008-2210); and the Universidad de Buenos Aires, Argentina (Grant Number UBACyT X187). The authors are very grateful to Dr. Cristian Sobarzo for his technical assistance in confecting the figures.
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Conflicts of interest
The author(s) declare that they have no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.
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