Document Detail


Corticotrophin-releasing hormone and fetal responses in human pregnancy.
MedLine Citation:
PMID:  10676436     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
During human pregnancy, maternal and fetal compartments of the human placenta produce and release corticotrophic-releasing hormone (CRH). Elevations of placental CRH are associated with decreased gestational length (including preterm delivery). The effects of elevated placental CRH on human fetal neurological development are not known. Pregnant women in the 31st and 32nd week of gestation consented to procedures for collection of blood and measurement of fetal heart rate (FHR) in response to a series of 40 vibro-acoustic stimuli (VAS). Measures of habituation and dishabituation were calculated from the FHR. All subjects were followed to delivery. Fetuses (N = 33) of women with highly elevated CRH were least responsive (p < .03) to stimulation after presentation of a novel (dishabituating) stimulus with control for parity, fetal gender, medical (antepartum) risk, and gestational length at term. In a larger sample (N = 156) a polynomial model predicted the pattern of FHR reactivity for the first 15 trials. Placental CRH concentration significantly predicted FHR reactivity after controlling for the effects of trial number, baseline FHR, inter-trial interval, and presence of uterine contractions. Increased maternal CRH levels were significantly related to the length of gestation after controlling for the effects of fetal gender, parity, and medical risk (p = .05). The relationship between length of gestation and FHR was not significant suggesting separate actions of CRH on these events. Elevated placental CRH appears to accelerate certain developmental events (gestational length) and may influence the fetal nervous system. The impaired fetal responses to novelty and increased arousal observed in this study suggest that neurological systems may be targets for placental CRH during sensitive developmental periods.
Authors:
C A Sandman; P Wadhwa; L Glynn; A Chicz-Demet; M Porto; T J Garite
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Annals of the New York Academy of Sciences     Volume:  897     ISSN:  0077-8923     ISO Abbreviation:  Ann. N. Y. Acad. Sci.     Publication Date:  1999  
Date Detail:
Created Date:  2000-03-06     Completed Date:  2000-03-06     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7506858     Medline TA:  Ann N Y Acad Sci     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  66-75     Citation Subset:  IM    
Affiliation:
Department of Psychiatry and Human Behavior, University of California, Irvine 92697, USA. casandma@uci.edu.
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MeSH Terms
Descriptor/Qualifier:
Body Constitution
Corticotropin-Releasing Hormone / blood*
Female
Fetus / physiology*
Gestational Age
Habituation, Psychophysiologic
Heart Rate, Fetal*
Humans
Infant, Newborn
Pregnancy
Pregnancy Trimester, Third / blood*
Regression Analysis
Chemical
Reg. No./Substance:
9015-71-8/Corticotropin-Releasing Hormone

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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