PRESENCE OF THE LUPUS ANTICOAGULANT IN PATIENTS WITH SYSTEMIC LUPUS ERYTHEMATOSUS DOES NOT CAUSE INHIBITION OF PROSTACYCLIN PRODUCTION

1987 ◽  
Author(s):  
M H A Rustin ◽  
H A Bull ◽  
P M Dowd ◽  
D A Isenberg ◽  
M L Snaith ◽  
...  
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Lupus Erythematosus ◽  
Lupus Anticoagulant ◽  
Umbilical Vein ◽  
Normal Subjects ◽  
Ionophore A23187 ◽  
Systemic Lupus ◽  
Dependent Inhibition ◽  
Prostacyclin Production ◽  
Thrombotic Tendency

The cause of the thrombotic tendency in patients having the lupus anticoagulant (LA) is unknown. Since inhibition of prostacyclin production by endothelial cells (EC) may be a pathogenetic factor, the effect of sera from normal subjects (NS, n=9), SLE (systemic lupus erythematosus) + LA (n=9) and SLE-LA (n=13) on the production of PGI2 by cultured human EC was studied.Confluent 1° cultures of human umbilical vein EC were incubated with 1, 5, 10 and 20% sera from the above for 24 hours. After stimulation with thecalcium ionophore A23187, 6-keto-PGF1α(the stable metabolite of PGI2) in the supernatant was measured by radioimmunoassay.A dose dependent inhibition of 6-keto-PGF1α was observed with all the sera but only the 10 and 20% sera from patients with SLE-LA produced a significantly greater inhibition than control sera. The mean production of 6-keto-PGFia (ng/104 cells) was 2.278 (NS), 2.6594 (SLE-LA) and 2.1418 (SLE + LA)after incubation with 1% sera for 24 hours. This decreased to 1.3647, 0.6517 and 0.942 respectively following incubation with 20% sera. This represented a 44% (NS), 71% (SLE-LA) and 62% (SLE + LA) inhibition of 6-keto-PGF1α production compared to serum free media.The non-significant reduction in prostacyclin production by sera from patients with SLE and the lupus anticoagulant suggests that other factors are responsible for the thrombotic tendency in these patients.

scholarly journals Diet in Rheumatoid Arthritis versus Systemic Lupus Erythematosus: Any Differences?

Nutrients ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 772
Author(s):  
Alessia Alunno ◽  
Francesco Carubbi ◽  
Elena Bartoloni ◽  
Davide Grassi ◽  
Claudio Ferri ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
Systemic Lupus Erythematosus ◽  
Lupus Erythematosus ◽  
Musculoskeletal Diseases ◽  
Normal Subjects ◽  
Experimental Models ◽  
Systemic Lupus ◽  
History Of ◽  
Indirect Action

In recent years, an increasing interest in the influence of diet in rheumatic and musculoskeletal diseases (RMDs) led to the publication of several articles exploring the role of food/nutrients in both the risk of developing these conditions in normal subjects and the natural history of the disease in patients with established RMDs. Diet may be a possible facilitator of RMDs due to both the direct pro-inflammatory properties of some nutrients and the indirect action on insulin resistance, obesity and associated co-morbidities. A consistent body of research has been conducted in rheumatoid arthritis (RA), while studies in systemic lupus erythematosus (SLE) are scarce and have been conducted mainly on experimental models of the disease. This review article aims to outline similarities and differences between RA and SLE based on the existing literature.

The relationship of antiphospholipid antibodies to cognitive function in patients with systemic lupus erythematosus

1997 ◽  
Vol 3 (4) ◽  
pp. 377-386 ◽  
Author(s):  
SUSAN D. DENBURG ◽  
RAMONA M. CARBOTTE ◽  
JEFFREY S. GINSBERG ◽  
JUDAH A. DENBURG
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Lupus Erythematosus ◽  
Verbal Memory ◽  
Lupus Anticoagulant ◽  
Cognitive Test ◽  
Antiphospholipid Antibody ◽  
Systemic Lupus ◽  
Cross Sectional ◽  
Antibody Positivity ◽  
The Relationship

Objective: To examine the relationship between antiphospholipid antibody positivity (expressed as the lupus anticoagulant) and cognitive dysfunction in patients with systemic lupus erythematosus (SLE). Methods: Cross-sectional comparisons of lupus anticoagulant (LA) positive (N = 39) and negative (N = 79) patients and controls (N = 35) on a cognitive test battery; 22 LA-positive and 53 LA-negative patients who had never experienced neuropsychiatric events (never-NP–SLE) were also compared separately. Results: LA-positive patients were 2 to 3 times more likely than were LA-negative patients to be designated as cognitively impaired. As a group, LA-positive patients, particularly those in the never-NP–SLE group, demonstrated lower performance primarily on tasks of verbal memory, cognitive flexibility, and psychomotor speed. Conclusions: LA positivity is associated with subclinical nervous system compromise, and a pattern of deficits compatible with subcortical involvement, possibly on the basis of ongoing LA-related microthrombotic events or vasculopathy. (JINS, 1997, 3, 377–386.)

The Activated Seven Lupus Anticoagulant Assay Detects Clinically Significant Antibodies

2008 ◽  
Vol 14 (3) ◽  
pp. 332-337 ◽  
Author(s):  
Gary W. Moore ◽  
Savita Rangarajan ◽  
Geoffrey F. Savidge
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Lupus Erythematosus ◽  
Partial Thromboplastin Time ◽  
Lupus Anticoagulant ◽  
Anticardiolipin Antibodies ◽  
Activated Partial Thromboplastin Time ◽  
Systemic Lupus ◽  
Lupus Anticoagulants ◽  
Russell’S Viper ◽  
Clinically Significant

Lupus anticoagulants are a heterogeneous group of autoantibodies detected by their effects on phospholipid-dependent coagulation assays. Persistent lupus anticoagulants are associated with thrombotic disease, but not all are clinically significant. Antibody heterogeneity and reagent and test variability dictate that at least 2 tests, of different types, should be used to screen lupus anticoagulants. The objective of this study was to investigate whether the activated seven lupus anticoagulant assay detects clinically significant antibodies. Eighty-two patients with antiphospholipid syndrome (APS) and 32 with systemic lupus erythematosus + positive for activated seven lupus anticoagulant and who were without thrombosis, who were positive by activated seven lupus anticoagulant assay, were investigated for lupus anticoagulants by dilute Russell's viper venom time, dilute activated partial thromboplastin time, and Taipan snake venom time, and for anticardiolipin antibodies. Fifty-seven of the APS patients were positive for lupus anticoagulants in multiple assays, 25 in activated seven lupus anticoagulant alone. Fourteen of the latter group were previously positive in other antiphospholipid antibodies assays, and 11 had only been positive for lupus anticoagulants by activated seven lupus anticoagulant. Twenty-eight had elevated anticardiolipin antibodies, 6 of whom were from the group that was positive in activated seven lupus anticoagulant only. Eight of the systemic lupus erythematosus + lupus anticoagulants (without thrombosis) patients were positive for lupus anticoagulant by activated seven lupus anticoagulant alone and had only been positive in activated seven lupus anticoagulant previously, and none had elevated anticardiolipin antibodies. The remaining 24 patients were lupus-anticoagulant positive in multiple assays, and 9 had elevated anticardiolipin antibodies. Dilute Russell's viper venom time and Dilute activated partial thromboplastin time are widely used to detect lupus anticoagulants and are considered to detect clinically significant antibodies. Activated seven lupus anticoagulant detected antibodies in APS patients who were positive by these assays and also lupus anticoagulants undetectable by the dilute Russell's viper venom time/dilute activated partial thromboplastin time reagents used, demonstrating its utility as a first-line or second-line assay.

The antiphospholipid (antibody) syndrome

2011 ◽  
pp. 343-352
Author(s):  
Alan J. Hakim ◽  
Gavin P.R. Clunie ◽  
Inam Haq
Keyword(s):  
Systemic Lupus Erythematosus ◽  
Autoimmune Diseases ◽  
Venous Thrombosis ◽  
Antiphospholipid Syndrome ◽  
Lupus Erythematosus ◽  
Lupus Anticoagulant ◽  
Antiphospholipid Antibody ◽  
Antiphospholipid Antibody Syndrome ◽  
Systemic Lupus ◽  
Pregnancy Morbidity

Introduction 344 Epidemiology and pathology 345 Clinical features of antiphospholipid syndrome 346 Treatment of antiphospholipid syndrome 348 Catastrophic antiphospholipid syndrome 350 The antiphospholipid syndrome (APS) was first described in the 1980s and comprises arterial and venous thrombosis with or without pregnancy morbidity in the presence of anticardiolipin (ACL) antibodies or the lupus anticoagulant (LAC). It can be primary, or secondary to other autoimmune diseases, most commonly systemic lupus erythematosus (SLE) (...

scholarly journals A clinical study of the lupus anticoagulant

Blood ◽  
1976 ◽  
Vol 48 (4) ◽  
pp. 499-509 ◽  
Author(s):  
MA Schleider ◽  
RL Nachman ◽  
EA Jaffe ◽  
M Coleman
Keyword(s):  
Systemic Lupus Erythematosus ◽  
New York ◽  
Clinical Study ◽  
Lupus Erythematosus ◽  
Lupus Anticoagulant ◽  
Coagulation Test ◽  
Systemic Lupus ◽  
York Hospital ◽  
Tissue Thromboplastin ◽  
Activator Complex

Abstract Eighty-three patients with circulating anticoagulants were studied at The New York Hospital. The lupus-type anticoagulant, an inhibitor of the prothrombin activator complex, was demonstrated in 58 patients. The inhibitor was identified using the blood and tissue thromboplastin inhibition tests. Inhibition by the lupus anticoagulant was augmented in 67% of these patients by a cofactor present in normal plasma. The lupus inhibitor was detected primarily because of an unsuspected abnormal coagulation test. One-half of the patients with the lupus-type anticoagulant did not have systemic lupus erythematosus.

Sign in / Sign up

Export Citation Format

Share Document