Document Detail


Anatomical and ontogenetic studies of the human paraventriculo-infundibular corticoliberin system.
MedLine Citation:
PMID:  3873629     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
In human fetus, newborn, infant and adult hypothalami, antibodies to ovine corticoliberin-41 stain a paraventriculo-infundibular neuroglandular pathway. The perikarya are located in the paraventricular nucleus, they mainly project to the ventral and lateral areas of the median eminence. Eminential corticoliberin-positive fibres appear during the 16th week of fetal life, and increase in number during the following weeks. Perikarya were first revealed in the 19th week. In some areas of the median eminence, corticoliberin-, vasopressin- or [Met]enkephalin-immunoreactive terminals are similarly distributed. Sequential stainings or staining comparison of contiguous semi-thin sections failed to prove the coexpression of corticoliberin and [Met]enkephalin immunoreactivities in fibres, but indicated that corticoliberin and vasopressin immunoreactivities may be coexpressed in a few fibres. Those methods enabled us to observe, in the paraventricular nucleus, perikarya revealed by corticoliberin and vasopressin antisera. Our results suggest a possible release of corticoliberin in portal vessels of the median eminence beginning in the 16th week of fetal life, i.e. 8 weeks later than appearance of the corticotrophs in the pituitary. Establishment of a corticoliberin hypothalamic control of pituitary corticotrophs at mid gestation agrees with previous physiological and teratological studies. Abundance, as well as immunostaining intensity of the corticoliberin processes, in the infant and adult median eminence attest to the physiological importance of this system. Close vicinity of corticoliberin, vasopressin and [Met]enkephalin fibres, in some eminential areas and coexpression of corticoliberin and vasopressin immunoreactivities in some neurons, are morphological correlates of functional relations which were reported.
Authors:
J L Bresson; M C Clavequin; D Fellmann; C Bugnon
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Neuroscience     Volume:  14     ISSN:  0306-4522     ISO Abbreviation:  Neuroscience     Publication Date:  1985 Apr 
Date Detail:
Created Date:  1985-07-23     Completed Date:  1985-07-23     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7605074     Medline TA:  Neuroscience     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  1077-90     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Adult
Age Factors
Corticotropin-Releasing Hormone / metabolism*
Enkephalin, Methionine / metabolism
Humans
Hypothalamus / embryology,  growth & development,  metabolism*
Infant, Newborn
Median Eminence / metabolism
Paraventricular Hypothalamic Nucleus / metabolism
Vasopressins / metabolism
Chemical
Reg. No./Substance:
11000-17-2/Vasopressins; 58569-55-4/Enkephalin, Methionine; 9015-71-8/Corticotropin-Releasing Hormone

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


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