Telomere length in healthy newborns is not affected by adverse intrauterine environments

Autor: Monique Cabral Hahn, Isabel Cristina Ribas Werlang, Ciliana Rechenmacher, Rahuany Velleda de Morais, Florencia María Barbé-Tuana, Lucas Kich Grun, Fátima Theresinha Costa Rodrigues Guma, Clécio Homrich da Silva, Juliana Rombaldi Bernardi, Mariana Bohns Michalowski, Marcelo Zubaran Goldani
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Genetics and Molecular Biology, Vol 44, Iss 4 (2021)
Druh dokumentu: article
ISSN: 1678-4685
DOI: 10.1590/1678-4685-gmb-2020-0411
Popis: Abstract Different intrauterine exposures are associated with different metabolic profiles leading to growth and development characteristics in children and also relate to health and disease patterns in adult life. The objective of this work was to evaluate the impact of four different intrauterine environments on the telomere length of newborns. This is a longitudinal observational study using a convenience sample of 222 mothers and their term newborns (>37 weeks of gestational age) from hospitals in Porto Alegre, Rio Grande do Sul (Brazil), from September 2011 to January 2016. Sample was divided into four groups: pregnant women with Gestational Diabetes Mellitus (DM) (n=38), smoking pregnant women (TOBACCO) (n=52), mothers with small-for-gestational age (SGA) children due to idiopathic intrauterine growth restriction (n=33), and a control group (n=99). Maternal and newborn genomic DNA were obtained from epithelial mucosal cells. Telomere length was assessed by qPCR, with the calculation of the telomere and single copy gene (T/S ratio). In this sample, there was no significant difference in telomere length between groups (p>0.05). There was also no association between childbirth weight and telomere length in children (p>0.05). For term newborns different intrauterine environments seems not to influence telomere length at birth.
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