Document Detail


Endotoxin exposure during late pregnancy alters ovine offspring febrile and hypothalamic-pituitary-adrenal axis responsiveness later in life.
MedLine Citation:
PMID:  20536335     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A growing number of studies indicate that maternal infection during pregnancy is associated with adverse fetal development and neonatal health. In this study, late gestating sheep (day 135) were challenged systemically with saline (0.9%) or Escherichia coli lipopolysaccharide endotoxin (400 ng/kg x 3 consecutive days, or 1.2 microg/kg x 1 day) in order to assess the impact of maternal endotoxemia on the developing fetal neuroendocrine-immune system. During adulthood, cortisol secretion and febrile responses of female offspring and the cortisol response of the male offspring to endotoxin (400 ng/kg), as well as the female cortisol response to adrenocorticotropic hormone (ACTH) challenge, were measured to assess neuroendocrine-immune function. These studies revealed that maternal endotoxin treatment during late gestation altered the female febrile and male and female cortisol response to endotoxin exposure later in life; however, the response was dependent on the endotoxin treatment regime that the pregnant sheep received. The follow-up ACTH challenge suggests that programing of the adrenal gland may be altered in the female fetus during maternal endotoxemia. The long-term health implications of these changes warrant further investigation.
Authors:
Rebecca E Fisher; Niel A Karrow; Margaret Quinton; Esther J Finegan; Stephan P Miller; Jim L Atkinson; Herman J Boermans
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Stress (Amsterdam, Netherlands)     Volume:  13     ISSN:  1607-8888     ISO Abbreviation:  Stress     Publication Date:  2010 Jul 
Date Detail:
Created Date:  2010-06-11     Completed Date:  2010-09-13     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9617529     Medline TA:  Stress     Country:  England    
Other Details:
Languages:  eng     Pagination:  334-42     Citation Subset:  IM    
Affiliation:
Department of Animal and Poultry Science, University of Guelph, Guelph, Ont., N1G 2W1, Canada.
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MeSH Terms
Descriptor/Qualifier:
Adrenocorticotropic Hormone / diagnostic use
Animals
Endotoxins / pharmacology*
Female
Fever / chemically induced,  immunology*
Hydrocortisone / blood*
Hypothalamo-Hypophyseal System / immunology*
Inflammation / chemically induced,  immunology
Male
Pituitary-Adrenal System / immunology*
Pregnancy / immunology
Prenatal Exposure Delayed Effects / immunology*
Sex Characteristics
Sheep
Chemical
Reg. No./Substance:
0/Endotoxins; 50-23-7/Hydrocortisone; 67924-63-4/endotoxin, Escherichia coli; 9002-60-2/Adrenocorticotropic Hormone

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


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