Document Detail

Gap junctional communication in primary culture of cells derived from human aortic intima.
MedLine Citation:
PMID:  7491628     Owner:  NLM     Status:  MEDLINE    
Intercellular communication via gap junctions plays an important role in the regulation and homeostasis. The presence of gap junctions and the efficiency of their function directly correlates with the degree of cell differentiation in a tissue. In the present study, gap junctional communication has been investigated in a primary culture of highly differentiated mesenchymal cells (subendothelial smooth muscle cells isolated from grossly normal and atherosclerotic areas of human aorta) and in poorly differentiated cells of mesenchymal origin (adult human skin fibroblasts as well as skin fibroblasts and aortic smooth muscle cells, derived from human fetus). The fluorescent dye transfer technique was used in this study. In cell cultures isolated from grossly normal and atherosclerotic aorta, the number of cells coupled via gap junctions increased with cell density and reached a plateau at a cell density of 50 to 70 cells/mm2. In cultures of normal aortic cells the number of coupled cells was 23.0 +/- 4.1 per injected cell and was significantly higher than in cultures of atherosclerotic cells (16.4 +/- 2.1, p < 0.05). Gap junctional communication between cells loaded with lipid inclusions was 2.4-fold lower than between cells free of excess intracellular lipids. In cultures of human skin fibroblasts the rate of intercellular communication was lower than in cultures of normal aortic cells and was comparable to that in cultures of atherosclerotic cells. There was practically no cell-to-cell communication in cultures of fetal cells. It is hypothesized that the reduced gap junctional communication in atherosclerotic human aorta is associated with the alterations in the degree of smooth muscle cell differentiation and impairs the function of the intima in atherosclerosis.
E R Andreeva; V N Serebryakov; A N Orekhov
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Tissue & cell     Volume:  27     ISSN:  0040-8166     ISO Abbreviation:  Tissue Cell     Publication Date:  1995 Oct 
Date Detail:
Created Date:  1995-12-29     Completed Date:  1995-12-29     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0214745     Medline TA:  Tissue Cell     Country:  SCOTLAND    
Other Details:
Languages:  eng     Pagination:  591-7     Citation Subset:  IM    
Institute of Experimental Cardiology, Cardiology Research Center, Moscow, Russia.
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MeSH Terms
Aorta / cytology*
Arteriosclerosis / pathology,  physiopathology
Cell Communication
Cells, Cultured
Fibroblasts / cytology
Fluorescent Dyes
Gap Junctions / physiology*
Mesoderm / cytology
Muscle, Smooth, Vascular / cytology,  physiology*
Tunica Media / cytology
Reg. No./Substance:
0/Fluorescent Dyes

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