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Coagulation protein function: enhancement of the anticoagulant effect of acetaldehyde by sulfated glycosaminoglycans.

Abstract：

:In view of the increased anticoagulant effect of acetaldehyde-treated heparin, other glycosaminoglycans (GAGs) such as chondroitin sulfates A and C, dermatan sulfate (chondroitin sulfate B), heparan sulfate, and hyaluronic acid were tested for anticoagulant activity before and after exposure to acetaldehyde. Clotting times of human plasma Ci-Trol coagulation control, level I (Baxter Healthcare Corp.), were tested in the presence of 1.8, 3.0, 3.6, or 4.5 microg heparin (0.32, 0.54, 0.64, 0.81 units heparin). Additionally, 9, 27, or 90 microg of chondroitin sulfates A, B, or C was utilized in lieu of heparin. The effects of 2 microg heparin (0.36 units), chondroitin sulfates A, B, and C, (20 microg each), 2 microg heparan sulfate, and 2 microg hyaluronic acid, respectively, in the presence of 44.7 mM acetaldehyde on the clotting time of plasma were studied. It was observed that chondroitin sulfate B (dermatan sulfate) prolonged the clotting time of plasma, although to a lesser extent than heparin. Chondroitin sulfates A and C, heparan sulfate, and hyaluronic acid did not prolong clotting time. However, pretreatment of all the sulfated GAGs with acetaldehyde gave products that enhanced the anticoagulant effect of acetaldehyde, notwithstanding the lack of anticoagulant effect of the GAGs. In contrast, hyaluronic acid exhibited no effect upon clotting time nor did its acetaldehyde-treated product. Furthermore, ethanol exhibited no effect upon the clotting times of the GAG-plasma mixtures. These results suggest that sulfated GAGs may be modified by acetaldehyde, a component of plasma in chronic alcoholics, and that the resultant products may contribute to the prolonged clotting times.

journal_name

Dig Dis Sci

journal_title

Digestive diseases and sciences

authors

Brecher AS,Adamu MT

doi

10.1023/a:1010668005729

subject

Has Abstract

pub_date

2001-09-01 00:00:00

pages

2033-42

issue

9

eissn

0163-2116

issn

1573-2568

journal_volume

46

pub_type

杂志文章

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