The maternal cortisol awakening response in human pregnancy is associated with the length of gestation.

OBJECTIVE The purpose of this study was to examine the relationship between intraindividual changes in cortisol responsiveness over pregnancy and the length of human gestation. STUDY DESIGN Pregnancy-related changes in the cortisol awakening response (CAR), which is a measure of hypothalamic-pituitary-adrenal axis responsiveness, were assessed prospectively in 101 pregnant women at 16.8 +/- 1.4 weeks' and 31.4 +/- 1.3 weeks' (+/-SD) gestation. Cortisol was measured in saliva that was collected immediately and +30, +45 and +60 minutes after awakening. RESULTS The CAR was significant in pregnancy and exhibited progressive attenuation over the course of gestation. A larger CAR in late pregnancy and reduced attenuation of the CAR from early to late gestation were associated significantly with shorter gestational length. CONCLUSION The findings are the first to suggest that the hormonal (cortisol) response to a naturally occurring challenge (awakening) and the degree of attenuation of this response over the course of gestation may represent a novel biomarker of increased vulnerability for earlier birth.

• Publication year

  2009

• Venue

  American Journal of Obstetrics and Gynecology

• Publication date

  2009-10-01

• Fields of study

  Medicine

• Identifiers
  DOI 10.1016/j.ajog.2009.06.063PMID 19716542
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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