Clinical and molecular evidence of accelerated ageing following very preterm birth.

Pediatr Res

Section of Neonatal Medicine, Department of Medicine, Chelsea and Westminster Campus, Imperial College London, 369 Fulham Road, London, SW10 9NH, UK.

Published: May 2020

Background: The mechanisms responsible for the associations between very preterm birth and a higher risk of poor cardiovascular and metabolic health in adult life are unknown.

Methods: Here, we compare the clinical and molecular phenotypes of healthy, normal-weight young adults (18-27 years), born very preterm (<33 weeks gestational age (GA)) and at full-term (37-42 weeks GA). Outcomes included whole-body MRI, hepatic and muscle H MRS, blood pressure measurements and telomere length.

Results: We recruited 156 volunteers, 69 preterm (45 women; 24 men) and 87 born at full-term (45 women; 42 men). Preterm individuals had a significantly altered blood pressure profile, including higher systolic blood pressure (SBP mmHg: preterm men 133.4 ± 10.1, term men 23.0 ± 6.9; preterm women 124.3 ± 7.1, term women 118.4 ± 8.0, p < 0.01 for all). Furthermore, preterm men had fewer long telomeres (145-48.5 kb: preterm men 14.1 ± 0.9%, term men 17.8 ± 1.1%, p < 0.05; 48.5-8.6 kb: preterm men 28.2 ± 2.6, term men 37.0 ± 2.4%, p < 0.001) and a higher proportion of shorter telomeres (4.2-1.3 kb: preterm men 40.4 ± 3.5%, term men 29.9 ± 3.2%, p < 0.01).

Conclusion: Our data indicate that healthy young adults born very preterm manifest clinical and molecular evidence of accelerated ageing.

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Source
http://dx.doi.org/10.1038/s41390-019-0709-9DOI Listing

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