Document Detail

Sympathetic noradrenergic innervation of guinea-pig liver: histofluorescence and pharmacological studies.
MedLine Citation:
PMID:  7241385     Owner:  NLM     Status:  MEDLINE    
Norepinephrine concentration was higher in guinea-pig liver than in rat or mouse liver and evidence was obtained that the norepinephrine was present within nerves. In guinea pigs, norepinephrine in liver was depleted by reserpine, 6-hydroxydopamine and metaraminol. The depletion by 6-hydroxydopamine and metaraminol was antagonized by prior treatment with desipramine, an inhibitor of uptake into norepinephrine neurons. Guinea-pig liver concentrated metaraminol to a greater extent than did rat liver; the concentration of metaraminol was lowered by desipramine pretreatment and, within three tissues of the guinea pig (heart greater than liver greater than muscle), paralleled the concentration of endogenous norepinephrine. These findings constitute pharmacological evidence for noradrenergic innervation of guinea-pig liver to a greater extent than in other species. Histofluorescence studies confirmed the existence of norepinephrine-containing nerve terminals in guinea-pig liver. Norepinephrine-containing varicosities were seen adjacent to the hepatic artery, portal vein and bile duct in the portal spaces and adjacent to sinusoid capillaries and hepatocytes in the liver parenchyma. These findings strengthen the evidence for sympathetic innervation of liver and suggest the guinea pig as a useful species in exploring physiological roles of noradrenergic innervation of liver.
R W Fuller; S Y Felten; K W Perry; H D Snoddy; D L Felten
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Journal of pharmacology and experimental therapeutics     Volume:  218     ISSN:  0022-3565     ISO Abbreviation:  J. Pharmacol. Exp. Ther.     Publication Date:  1981 Jul 
Date Detail:
Created Date:  1981-08-27     Completed Date:  1981-08-27     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0376362     Medline TA:  J Pharmacol Exp Ther     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  282-8     Citation Subset:  IM    
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MeSH Terms
Guinea Pigs
Liver / innervation*
Microscopy, Fluorescence
Norepinephrine / analysis,  physiology
Sympathetic Nervous System / anatomy & histology*,  drug effects
Reg. No./Substance:

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