Acquired activated protein C resistance is associated with the co-existence of anti-prothrombin antibodies and lupus anticoagulant activity in patients with systemic lupus erythematosus.

Abstract

Venous thromboembolism (VTE) is one of the common manifestations in the anti-phospholipid (aPL) syndrome. We examined the levels of IgG antibodies (Abs) to beta2-glycoprotein I (beta2-GP I) and prothrombin, lupus anticoagulant (LA) activity, activated protein C resistance (APC-R), and factor V Leiden in 96 patients with systemic lupus erythematosus (SLE); 19 with VTE and 77 without VTE. Acquired APC-R, which was not found in any patient with the factor V Leiden mutation, was present in 33 (34.4%) out of the 96 patients with SLE. The presence of acquired APC-R was a strong risk factor for VTE. The SLE patients were divided into four groups according to the results of enzyme-linked immunosorbent assay (ELISA) and LA activity for each aPL Abs: ELISA+, LA+; ELISA+, LA-; ELISA-, LA+; and ELISA-, LA-. A significant association was observed between APC-R and the co-existence of anti-beta2-GP I Abs and LA activity or of anti-prothrombin Abs and LA activity. There was no association between APC-R and the presence of anti-beta2-GP I Abs, anti-prothrombin Abs, or LA activity alone. However, when multivariate logistical regression analysis was performed, it was clear that only the co-existence of anti-prothrombin and LA activity was a significant risk factor for APC-R. These findings indicate that the co-existence of anti-prothrombin Abs and LA activity may be an important factor in the pathogenesis of acquired APC-R in patients with SLE.

• Authors: Junzo Nojima, Hirohiko Kuratsune, Etsuji Suehisa, Tomio Kawasaki, Takashi Machii, Teruo Kitani, Yoshinori Iwatani, Yuzuru Kanakura
• Journal: British journal of haematology (Br J Haematol) Vol. 118 Issue 2 Pg. 577-83 (Aug 2002) ISSN: 0007-1048 [Print] England
• PMID: 12139749 (Publication Type: Journal Article)

Chemical References

• Antibodies, Antiphospholipid
• Glycoproteins
• Immunoglobulin G
• Lupus Coagulation Inhibitor
• beta 2-Glycoprotein I
• factor V Leiden
• Factor V
• Prothrombin

Topics

• Activated Protein C Resistance (etiology)
• Adult
• Aged
• Antibodies, Antiphospholipid (analysis)
• Enzyme-Linked Immunosorbent Assay (methods)
• Factor V
• Female
• Glycoproteins (immunology)
• Humans
• Immunoglobulin G (metabolism)
• Lupus Coagulation Inhibitor (physiology)
• Lupus Erythematosus, Systemic (complications)
• Male
• Middle Aged
• Prothrombin (immunology)
• Risk Factors
• Thromboembolism (etiology)
• Venous Thrombosis (etiology)
• beta 2-Glycoprotein I