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The Journal of clinical endocrinology and metabolism, 102(5), 1495-1504, 2017

Preconception Low-Dose Aspirin Restores Diminished Pregnancy and Live Birth Rates in Women With Low-Grade Inflammation: A Secondary Analysis of a Randomized Trial

Noya Galai , Emily M Mitchell , Sunni L Mumford

Author affiliations (7)
  • University of Haifa ROR
  • National Institutes of Health ROR
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development ROR
  • Intermountain Healthcare ROR
  • University of Utah ROR
  • Department of Epidemiology and Environmental Health, School of Medicine and Biomedical Sciences, State University of New York at Buffalo, Buffalo, NY. ROR
  • Commonwealth Medical College ROR
DOI10.1210/jc.2016-2917 PMID28323989
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Abstract

Context

Inflammation is linked to causes of infertility. Low-dose aspirin (LDA) may improve reproductive success in women with chronic, low-grade inflammation.

Objective

To investigate the effect of preconception-initiated LDA on pregnancy rate, pregnancy loss, live birth rate, and inflammation during pregnancy.

Design

Stratified secondary analysis of a multicenter, block-randomized, double-blind, placebo-controlled trial.

Setting

Four US academic medical centers, 2007 to 2012.

Participants

Healthy women aged 18 to 40 years (N = 1228) with one to two prior pregnancy losses actively attempting to conceive.

Intervention

Preconception-initiated, daily LDA (81 mg) or matching placebo taken up to six menstrual cycles attempting pregnancy and through 36 weeks' gestation in women who conceived.

Main Outcome Measures

Confirmed pregnancy, live birth, and pregnancy loss were compared between LDA and placebo, stratified by tertile of preconception, preintervention serum high-sensitivity C-reactive protein (hsCRP) (low, <0.70 mg/L; middle, 0.70 to <1.95 mg/L; high, ≥1.95 mg/L).

Results

Live birth occurred in 55% of women overall. The lowest pregnancy and live birth rates occurred among the highest hsCRP tertile receiving placebo (44% live birth). LDA increased live birth among high-hsCRP women to 59% (relative risk, 1.35; 95% confidence interval, 1.08 to 1.67), similar to rates in the lower and mid-CRP tertiles. LDA did not affect clinical pregnancy or live birth in the low (live birth: 59% LDA, 54% placebo) or midlevel hsCRP tertiles (live birth: 59% LDA, 59% placebo).

Conclusions

In women attempting conception with elevated hsCRP and prior pregnancy loss, LDA may increase clinical pregnancy and live birth rates compared with women without inflammation and reduce hsCRP elevation during pregnancy.

Topics

InfertilityReproductive Endocrinology
low-dose aspirin pregnancy rate inflammation, preconception aspirin live birth, chronic low-grade inflammation infertility, aspirin C-reactive protein fertility, anti-inflammatory treatment subfertility, EAGeR trial aspirin, hsCRP preconception aspirin, aspirin pregnancy loss prevention, subclinical inflammation reproductive outcomes, randomized trial aspirin fertility
PMID 28323989 28323989 DOI 10.1210/jc.2016-2917 10.1210/jc.2016-2917

Cite this article

Sjaarda, L. A., Radin, R. G., Silver, R. M., Mitchell, E., Mumford, S. L., Wilcox, B., Galai, N., Perkins, N. J., Wactawski-Wende, J., Stanford, J. B., & Schisterman, E. F. (2017). Preconception Low-Dose Aspirin Restores Diminished Pregnancy and Live Birth Rates in Women With Low-Grade Inflammation: A Secondary Analysis of a Randomized Trial. *The Journal of clinical endocrinology and metabolism*, *102*(5), 1495-1504. https://doi.org/10.1210/jc.2016-2917

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