Document Detail


Distribution of corticotropin releasing hormone in the fetus, newborn, juvenile, and adult baboon.
MedLine Citation:
PMID:  14605257     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Corticotropin releasing hormone (CRH) has previously been identified in extrahypothalamic tissues and may act in a paracrine fashion within these tissues. To date, CRH production and its role in the fetus and newborn have not been investigated. The aim of this study was to explore the distribution and ontogeny of CRH in extrahypothalamic tissues of the fetus, newborn, juvenile, and adult baboon. Pituitary, adrenal, kidney, liver, and lung tissues from baboons at 125 d gestation, 140 d gestation, 185 d gestation (term), juveniles, and adults were obtained at necropsy. The tissues were quantified for protein and immunoreactive CRH was determined by a RIA. CRH levels were normalized to the protein content of each tissue. CRH was present in all tissues and varied over a 100-fold range according to tissue type. The highest concentration of CRH was found in the pituitary, which did not differ with the gestation and/or age of the animal. In the lung tissues of 125- and 140-d gestation animals, CRH was greater than the term, juvenile, and adult lung (p < 0.02). CRH in the adrenal gland of the 125-d samples was greater than the other four ages tested (p < 0.02). Liver CRH levels were higher in the term animals compared with the juvenile baboons. Our study documents the existence of CRH in extrahypothalamic tissues of the baboon from 125 d of gestation to adulthood. Given its presence and distribution, we speculate that CRH may exert ongoing paracrine and/or autocrine actions in these tissues from the time of intrauterine life throughout adulthood.
Authors:
Susan A Dotzler; Robert J Digeronimo; Bradley A Yoder; Theresa M Siler-Khodr
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.     Date:  2003-11-06
Journal Detail:
Title:  Pediatric research     Volume:  55     ISSN:  0031-3998     ISO Abbreviation:  Pediatr. Res.     Publication Date:  2004 Jan 
Date Detail:
Created Date:  2003-12-22     Completed Date:  2004-08-03     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0100714     Medline TA:  Pediatr Res     Country:  United States    
Other Details:
Languages:  eng     Pagination:  120-5     Citation Subset:  IM    
Affiliation:
Department of Pediatrics, Wilford Hall Medical Center, 2200 Berquist Suite 1, Lackland AFB, TX 78236, USA. susan.dotzler@lackland.af.mil
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MeSH Terms
Descriptor/Qualifier:
Adrenal Glands / metabolism*
Age Factors
Animals
Animals, Newborn
Corticotropin-Releasing Hormone / metabolism*
Fetus
Kidney / metabolism
Liver / metabolism
Lung / metabolism*
Papio
Paracrine Communication
Pituitary Gland / metabolism*
Grant Support
ID/Acronym/Agency:
HL52636-06/HL/NHLBI NIH HHS
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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