Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/123953
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Type: Journal article
Title: Advanced maternal age compromises fetal growth and induces sex-specific changes in placental phenotype in rats
Author: Napso, T.
Hung, Y.P.
Davidge, S.T.
Care, A.S.
Sferruzzi-Perri, A.N.
Citation: Scientific Reports, 2019; 9(1):16916-1-16916-15
Publisher: Springer Nature
Issue Date: 2019
ISSN: 2045-2322
2045-2322
Statement of
Responsibility: 
Tina Napso, Yin-Po Hung, Sandra T. Davidge, Alison S. Care, Amanda N. Sferruzzi-Perri
Abstract: Advanced maternal age is associated with an increased risk of pregnancy complications. It programmes sex-specific cardiovascular dysfunction in rat offspring, however the intrauterine mechanisms involved remain unknown. This study in the rat assessed the impact of advanced maternal age on placental phenotype in relation to the growth of female and male fetuses. We show that relative to young (3–4 months) dams, advanced maternal age (9.5–10 months) compromises growth of both female and male fetuses but affects the placental phenotype sex-specifically. In placentas from aged versus young dams, the size of the placental transport and endocrine zones were increased and expression of Igf2 (+41%) and placental lactogen (Prl3b1: +59%) genes were upregulated in female, but not male fetuses. Placental abundance of IGF2 protein also decreased in the placenta of males only (−95%). Moreover, in placentas from aged versus young dams, glucocorticoid metabolism (11β-hsd2: +63% and 11β-hsd1: −33%) was higher in females, but lower in males (11β-hsd2: −50% and 11β-hsd1: unaltered). There was however, no change in the placental abundance of 11β-HSD2 protein in aged versus young dams regardless of fetal sex. Levels of oxidative stress in the placenta were increased in female and male fetuses (+57% and +90%, respectively) and apoptosis increased specifically in the placenta of males from aged rat dams (+700%). Thus, advanced maternal age alters placental phenotype in a sex-specific fashion. These sexually-divergent changes may play a role in determining health outcomes of female and male offspring of aged mothers.
Keywords: Placenta
Animals
Rats
Rats, Sprague-Dawley
Fetal Growth Retardation
Maternal Age
Sex Factors
Fetal Development
Pregnancy
Phenotype
Female
Male
Rights: © The Author(s) 2019. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
DOI: 10.1038/s41598-019-53199-x
Grant ID: http://purl.org/au-research/grants/nhmrc/1092191
Appears in Collections:Aurora harvest 4
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