PMID: 8461922Apr 1, 1993Paper

Cognitive impairment and autoantibodies in systemic lupus erythematosus

British Journal of Rheumatology
J G HanlyK B Elkon

Abstract

Nervous system involvement in systemic lupus erythematosus (SLE) includes a wide array of manifestations some of which have been associated with specific autoantibodies. These include reactivity to surface neuronal and lymphocyte antigens, ribosomal P and cardiolipin. The aim of the present study was to examine the association between cognitive abnormalities and these autoantibodies in an unselected female population of SLE patients. Using a battery of standardized neuropsychological tests, cognitive impairment was identified in 15/70 (21%) SLE patients compared to 1/25 (4%) patients with rheumatoid arthritis and 1/23 (4%) healthy subjects (P = 0.04). Circulating antineuronal antibodies were measured by indirect immunofluorescence using human neuroblastoma cell lines IMR-6 and SK-N-SH. Lymphocytotoxic antibodies were measured by microcytotoxicity. Antibodies to ribosomal P and cardiolipin were measured by ELISA. Antineuronal antibodies were detected in 34%, lymphocytotoxic antibodies in 47%, anti-P antibodies in 17% and anticardiolipin antibodies in 24% of patients. In the cognitively impaired and unimpaired SLE patients there was no significant difference in the prevalence of antineuronal antibodies (33 vs 35%), lymphocytotoxi...Continue Reading

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