Document Detail


Differential effects of electrical stimulation of the dorsal raphe nucleus and of cervical sympathectomy on serotonin and noradrenaline concentrations in major cerebral arteries and pial vessels in the rat.
MedLine Citation:
PMID:  1688863     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The levels of noradrenaline (NA), serotonin (5-HT), and 5-hydroxyindoleacetic acid were measured by HPLC and compared between the large arteries of the circle of Willis and the small pial vessels in the rat, following either electrical stimulation of the dorsal raphe nucleus or bilateral superior cervical ganglionectomy. With electrical stimulation, the 5-HT concentrations were reduced (-48%) in the small pial vessels, but were unchanged in the major cerebral arteries. NA concentrations were dramatically reduced following cervical sympathectomy in the large arteries (-77%), though the reduction was less pronounced (-34%) in the small vessels. Sympathectomy caused a significant decrease in the 5-HT concentration of the major cerebral arteries (-33%), but was without effect on the 5-HT levels of the small pial vessels. These results show that an appreciable fraction of the perivascular 5-HT measured in the small pial and the large cerebral arteries originates from different sources.
Authors:
G Bonvento; P Lacombe; E T MacKenzie; L Rouquier; B Scatton; J Seylaz
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of cerebral blood flow and metabolism : official journal of the International Society of Cerebral Blood Flow and Metabolism     Volume:  10     ISSN:  0271-678X     ISO Abbreviation:  J. Cereb. Blood Flow Metab.     Publication Date:  1990 Jan 
Date Detail:
Created Date:  1990-03-01     Completed Date:  1990-03-01     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  8112566     Medline TA:  J Cereb Blood Flow Metab     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  123-6     Citation Subset:  IM    
Affiliation:
Department of Biology, Synthélabo Recherche (L.E.R.S.), Bagneux, France.
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MeSH Terms
Descriptor/Qualifier:
Animals
Blood Vessels / metabolism
Cerebral Arteries* / metabolism
Chromatography, High Pressure Liquid
Electric Stimulation
Hydroxyindoleacetic Acid / metabolism
Male
Norepinephrine / metabolism*
Osmolar Concentration
Pia Mater / blood supply*
Raphe Nuclei / physiology*
Rats
Rats, Inbred Strains
Serotonin / metabolism*
Sympathectomy*
Chemical
Reg. No./Substance:
50-67-9/Serotonin; 51-41-2/Norepinephrine; 54-16-0/Hydroxyindoleacetic Acid

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


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