Artículos de revistas
Anticardiolipin antibodies from syphilis and systemic lupus erythematosus induce leakage in cardiolipin vesicles
Fecha
1996-12-01Registro en:
Brazilian Journal of Medical and Biological Research, v. 29, n. 4, p. 489-494, 1996.
0100-879X
2-s2.0-0030124156
Autor
Universidade Estadual Pautista
Universidade de São Paulo (USP)
Institución
Resumen
Anticardiolipin antibodies from sera of patients with systemic lupus erythematosus or syphilis induced leakage of entrapped carboxyfluorescein (CF) from cardiolipin (CL)/phosphatidylcholine(PC) vesicles prepared by sonication of equimolar mixtures of CL:PC. The sera dilution used here was 1:7500. IgG (5-20 μg/ml) from the same sera, not containing B2GPI, also produced a concentration-dependent leak. Vesicle leakage was inhibited by salt and was not detected with vesicles prepared exclusively with phosphatidylcholine. The demonstration of antibody-induced vesicle leakage offers a convenient system to investigate the mechanism of antibody-lipid binding as well as a potential diagnostic tool.