Document Detail

The organization of the cardiac ganglion of the axolotl (Ambystoma mexicanum).
MedLine Citation:
PMID:  3209798     Owner:  NLM     Status:  MEDLINE    
The heart of the axolotl Ambystoma mexicanum was studied with histochemical methods to determine the distribution of neurons containing acetylcholine esterase, catecholamines and 5-hydroxytryptamine. The cardiac ganglion is made up of cholinergic nerve fibers and somata, and of catecholaminergic fibers. Small intensely fluorescent cells were found along blood vessels in the pericardial wall at the base of the heart, but not in the heart itself, except, in a few instances, in the region bordering the pericardial wall. Both the cholinergic and the catecholaminergic innervation of the heart were poorly developed at hatching and reached their mature state after a few months. Cholinesterase staining fibers appeared several weeks before catecholaminergic fibers. The number of postganglionic cholinergic neurons in the heart increased several-fold during the first month after hatching. Histofluorescence studies of organ cultures suggested that all the catecholamine present in the heart are of extrinsic origin. Liquid chromatography with electrochemical detection demonstrated that the dominant catecholamine in the heart is norepinephrine. No neurons containing 5-hydroxytryptamine were found.
R Melinek; M Mirolli
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of the autonomic nervous system     Volume:  24     ISSN:  0165-1838     ISO Abbreviation:  J. Auton. Nerv. Syst.     Publication Date:  1988 Sep 
Date Detail:
Created Date:  1989-02-14     Completed Date:  1989-02-14     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8003419     Medline TA:  J Auton Nerv Syst     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  29-39     Citation Subset:  IM    
Medical Sciences Program, Indiana University Bloomington 47405.
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MeSH Terms
Acetylcholinesterase / metabolism
Ambystoma / anatomy & histology*
Ambystoma mexicanum / anatomy & histology*,  growth & development
Catecholamines / metabolism
Ganglia / anatomy & histology*,  cytology
Heart / anatomy & histology*,  growth & development
Microscopy, Fluorescence
Microscopy, Interference
Myocardium / metabolism
Neurons / enzymology,  metabolism
Osmolar Concentration
Reg. No./Substance:
0/Catecholamines; EC

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

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