Enhanced lipid peroxidation in patients positive for antiphospholipid antibodies.
نویسندگان
چکیده
The mechanism leading to the formation of antiphospholipid antibodies (aPL) is still unknown. Because an in vitro study suggested that aPL may derive from pro-oxidant conditions, we sought a relationship between aPL and isoprostanes, indices of lipid peroxidation in vivo. Thirty patients with systemic lupus erythematosus have been studied. Seventeen (56.6%) were positive for aPL because they had lupus anticoagulant and/or high titer of anticardiolipin antibodies (aCL). Plasma levels of tumor necrosis factor (TNF ) and urinary excretion of two isoprostanes, 8-epi-PGF2alpha and IPF2alpha -I, free radical catalyzed oxidation products of arachidonic acid, were measured. Patients with systemic lupus erythematosus had higher urinary excretion of 8-epi-PGF2alpha and IPF2alpha -I than controls; urinary excretion of the two isoprostanes was highly correlated (Rho = 0.74, P < .0001). Urinary 8-epi-PGF2alpha was highly correlated with both aCL titer (Rho = 0. 70, P < .0001) and TNF (Rho = 0.84, P < .0001), a measure of disease severity. Excretion of this isoprostane was also higher in those patients who exhibited aPL (P < .0001). Comparable correlations were observed with the isoprostane IPF2alpha -I. No difference of 8-epi-PGF2alpha was observed between patients with and without previous history of thrombosis. This study, showing the existence of a close association between aPL and increased in vivo lipid peroxidation, supports the hypothesis that these antibodies may result from pro-oxidative conditions and suggests that inflammation may play an important role.
منابع مشابه
Ongoing prothrombotic state in patients with antiphospholipid antibodies: a role for increased lipid peroxidation.
We measured the urinary excretion of Isoprostane F2alpha-III and Isoprostane-F2alpha-VI, two markers of in vivo lipid peroxidation, and the circulating levels of the prothrombin fragment F1+2, a marker of thrombin generation, in 18 antiphospholipid antibodies-positive patients, in 18 antiphospholipid antibodies-negative patients with systemic lupus erythematosus, and in 20 healthy subjects. Fur...
متن کاملPrevalence of Antiphospholipid Antibodies in Syrian Patients with Thrombosis
Background: Antiphospholipid antibodies (aPL) are a heterogeneous family of anti-bodies associated with thrombosis and other complications. Objective: To study the prevalence of aPL in patients with thrombosis at Aleppo University Hospitals, Syria. Methods: One hundred and fifty-seven patients with venous and arterial thrombosis and 63 healthy controls were studied. Anticardiolipin antibodies (...
متن کاملPercutaneous revascularization versus beating heart CABG or CABG with cardiopulmonary bypass in patients with refractory myocardial ischemia.
1. Praticò D, Iuliano I, Mauriello A, et al. Localization of distinct F2-isoprostanes in human atherosclerotic lesions. J Clin Invest 1997; 100:2028–34. 2. Iuliano L, Praticò D, Ferro D, et al. Enhanced lipid peroxidation in patients positive for antiphospholipid antibodies. Blood 1997;90: 3931–5. 3. Praticò D, Basili S, Vieri M, Cordova C, Violi F, Fitzgerald GA. Chronic obstructive pulmonary ...
متن کاملComparison of Serum Level of Antiphospholipid Antibodies and Homocysteine in Patients with Pemphigus Vulgaris and Healthy Subjects: A Case-Control Study
Introduction: Pemphigus vulgaris is an autoimmune blistering disease of the skin and mucous membrane. Antiphospholipid antibodies are a group of autoantibodies found in patients with autoimmune diseases. Due to the risk for thrombotic events in autoimmune diseases, we decided to evaluate the correlation between pemphigus vulgaris and predictive elements of atherothrombosis including antiphospho...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Blood
دوره 90 10 شماره
صفحات -
تاریخ انتشار 1997