Binding of two anthranilic acid derivatives to human albumin, erythrocytes, and lipoproteins: evidence for glafenic acid high affinity binding.

Abstract:

:The binding of two anthranilic acid derivatives, glafenic and floctafenic acids, to human erythrocytes and plasma proteins has been investigated in vitro by equilibrium dialysis. Despite their close chemical structures it was shown that the binding of the two compounds to serum albumin, lipoproteins, and erythrocytes was dramatically different both in quality and quantity. Using various techniques including fluorometry and circular dichroism, it was shown that glafenic acid binds to the human serum albumin (HSA) warfarin/azapropazone site and that floctafenic acid binds to both warfarin/azapropazone and benzodiazepine sites. Glafenic acid is strongly bound to HSA with n = 1, k = 2.4 X 10(6) liters/mol and to erythrocytes with N = 12.4 mumol/liter, K = 1.7 X 10(6) liters/mol. Floctafenic acid is bound with a weaker affinity to HSA, n = 2, k = 0.3 X 10(6) liters/mol and to erythrocytes, N = 2900 mumol/liter and K = 0.007 X 10(6) liters/mol.

journal_name

Mol Pharmacol

journal_title

Molecular pharmacology

authors

Albengres E,Urien S,Riant P,Marcel GA,Tillement JP

subject

Has Abstract

pub_date

1987-03-01 00:00:00

pages

294-300

issue

3

eissn

0026-895X

issn

1521-0111

journal_volume

31

pub_type

杂志文章