The association of maternal psychosocial stress with newborn telomere length.

TitleThe association of maternal psychosocial stress with newborn telomere length.
Publication TypeJournal Article
Year of Publication2020
AuthorsIzano, MA, Cushing, LJ, Lin, J, Eick, SM, Goin, DE, Epel, E, Woodruff, TJ, Morello-Frosch, R
JournalPLoS One
Volume15
Issue12
Paginatione0242064
Date Published2020
ISSN1932-6203
KeywordsAdolescent, Adult, Female, Fetal Blood, Humans, Infant, Newborn, Leukocytes, Male, Maternal Health, Pregnancy, Pregnant Women, Prenatal Exposure Delayed Effects, Stress, Psychological, Telomere, Telomere Homeostasis, Telomere Shortening, Young Adult
Abstract

BACKGROUND: Telomere length in early life predicts later length, and shortened telomere length among adults and children has been linked to increased risk of chronic disease and mortality. Maternal stress during pregnancy may impact telomere length of the newborn.

METHODS: In a diverse cohort of 355 pregnant women receiving prenatal and delivery care services at two hospitals in San Francisco, California, we investigated the relationship between self-reported maternal psychosocial stressors during the 2nd trimester of pregnancy and telomere length (T/S ratio) in newborn umbilical cord blood leukocytes. We examined financial strain, food insecurity, high job strain, poor neighborhood quality, low standing in one's community, experience of stressful/traumatic life events, caregiving for a dependent family member, perceived stress, and unplanned pregnancy. We used linear regression and Targeted Minimum Loss-Based Estimation (TMLE) to evaluate the change in the T/S ratio associated with exposure to each stressor controlling for maternal age, education, parity, race/ethnicity, and delivery hospital.

RESULTS: In TMLE analyses, low community standing (-0.09; 95% confidence interval [CI]-0.19 to 0.00) and perceived stress (-0.07; 95% CI -0.15 to 0.021 was marginally associated with shorter newborn telomere length, but the associations were not significant after adjusting for multiple comparisons. All linear regression estimates were not statistically significant. Our results also suggest that the association between some maternal stressors and newborn telomere length varies by race/ethnicity and infant sex.

CONCLUSIONS: This study is the first to examine the joint effect of multiple stressors during pregnancy on newborn TL using a flexible modeling approach.

DOI10.1371/journal.pone.0242064
Alternate JournalPLoS One
PubMed ID33301453
PubMed Central IDPMC7728273
Grant ListP01 ES022841 / ES / NIEHS NIH HHS / United States
UG3 OD023272 / OD / NIH HHS / United States
UH3 OD023272 / OD / NIH HHS / United States