Binding of heparin and compound Y to endothelial cells stimulates the synthesis of an antithrombotic heparan sulfate proteoglycan
Braz. j. med. biol. res
; 27(9): 2191-5, Sept. 1994. graf
Article
in En
| LILACS
| ID: lil-144472
Responsible library:
BR1.1
ABSTRACT
The mechanism by which heparin and antithrombotic agents, including a cyclic octaphenolsufonic acid (compound Y), stimulate the synthesis of an antithrombotic heparan sulfate by endothelial cells in culture was investigated. Compound Y increases the amount of heparan sulfate from the cell surface and secreted to the endothelial cell receptors at a concentration of 0.16µM for heparin and 2.7µM for compound Y. The kinetic binding constants (Ks) for compound Y and heparin were 1,333 nM and 42 nM, respectively. It was also shown that both compounds bind to the same receptors. The Scatchard plots indicated that 1,319 nmoles compound Y and 35 nmoles heparin bound per microgram cell protein, indicating that 40-fold more molecules of compound Y bound to the receptors when compared to heparin. No significant internalization of the compounds was observed
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Index:
LILACS
Main subject:
Proteoglycans
/
Endothelium, Vascular
/
Heparin
/
Heparitin Sulfate
Limits:
Animals
Language:
En
Journal:
Braz. j. med. biol. res
Journal subject:
BIOLOGIA
/
MEDICINA
Year:
1994
Type:
Article
/
Congress and conference