The effect of intrauterine growth on leukocyte telomere length at birth

The Journal of Maternal-fetal & Neonatal Medicine : the Official Journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians
Alketa StefaEvangelia Charmandari

Abstract

Objective: Telomeres are specialized nucleoprotein structures located at the ends of chromosomes, which play a crucial role in genomic stability. Telomere shortening has been proposed as a biomarker for the onset of age-related diseases. This study aimed to determine whether restricted or increased intrauterine growth affects leukocyte telomere length (LTL) at birth. Materials and methods: One hundred sixty-five (n = 165) full-term neonates participated in the study. Fetuses were classified as intrauterine growth restriction (IUGR, n = 21), large-for-gestational-age (LGA, n = 15), or appropriate-for-gestational-age (AGA, n = 129), based on customized birth-weight standards. Mixed arteriovenous cord blood samples were collected for isolation of leukocyte DNA. The LTL was measured using multiplex monochrome quantitative real-time PCR and telomeric restriction fragments through Southern blot analysis (terminal restriction fragment [TRF]). Results: Despite differences among groups in birth weight, length and head circumference, LTL did not differ among AGA (6.78 ± 0.58), IUGR (10.54 ± 1.80), and LGA (11.95 ± 2.42) neonates (p = .098). Cord blood IGF-1 and IGFBP-3 concentrations were higher in the LGA group. LTL positively correlate...Continue Reading

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Citations

May 26, 2021·Environmental Science and Pollution Research International·Jun LiangXiaoqiang Qiu

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