Document Detail

Chemoreceptive epithelioid cells in the chicken aorta. An electron microscopical study.
MedLine Citation:
PMID:  9652143     Owner:  NLM     Status:  MEDLINE    
Aggregations of granulated epithelioid cells exist in the chicken aorta. In the present study, the locational characteristics of the epithelioid cells were investigated via an electron microscopic approach. Epithelioid cells were found mainly in two regions; the tunica interna just below the endothelial cell layers, and the intermediate region of the tunica media. In the former, the epithelioid cells were in contact with endothelial cells and sometimes directly exposed to the aortic lumen. No contact between the epithelioid cells and the nerve endings was observed in this region. On the other hand, in the intermediate region of the tunica media, five or more epithelioid cells were aggregated, and the synaptic structures were occasionally observed. Additionally, the epithelioid cells in this region was observed to closely contact smooth muscle cells. In an experiment using horseradish peroxidase injection, reactions were detected in the intercellular spaces between the epithelioid cells and endothelial cells. These results suggest that the epithelioid cells localized in the subendothelial region receive information from the aortic lumen, whereas their aggregations in the tunica media are controlled by the nervous system.
Y Kon; M Miyoshi; Y Hashimoto
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Anatomia, histologia, embryologia     Volume:  27     ISSN:  0340-2096     ISO Abbreviation:  Anat Histol Embryol     Publication Date:  1998 Jun 
Date Detail:
Created Date:  1998-07-28     Completed Date:  1998-07-28     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  7704218     Medline TA:  Anat Histol Embryol     Country:  GERMANY    
Other Details:
Languages:  eng     Pagination:  161-6     Citation Subset:  IM    
Department of Disease Control, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan.
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MeSH Terms
Aorta / cytology*
Chemoreceptor Cells / cytology,  ultrastructure*
Chickens / anatomy & histology*
Endothelium, Vascular / cytology
Epithelioid Cells / cytology,  ultrastructure*
Microscopy, Electron
Muscle, Smooth, Vascular / cytology

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