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  • Title: Chorea in systemic lupus erythematosus.
    Author: Baizabal-Carvallo JF, Alonso-Juarez M, Koslowski M.
    Journal: J Clin Rheumatol; 2011 Mar; 17(2):69-72. PubMed ID: 21325962.
    Abstract:
    BACKGROUND: Chorea is recognized as one of the neurologic manifestations of systemic lupus erythematosus (SLE). Most reports show an association between chorea and antiphospholipid (aPL) antibodies in SLE patients. OBJECTIVES: The objective of this study was to describe the association of aPL antibodies with lupus chorea and its possible role in the pathogenesis of chorea. METHODS: We made a retrospective review of all cases of lupus chorea between 1989 and 2007 in a tertiary care center in Mexico City. RESULTS: We found 7 episodes of chorea in 5 patients with SLE. In 2 patients (3 episodes), chorea was associated with cerebral ischemia; one of these cases had positive anticardiolipin (aCL) immunoglobulin G (IgG) antibodies, whereas the other was diagnosed as having vascular lipohyalinosis as the probable cause of cerebral ischemia. In 3 patients (4 episodes), an immune-mediated mechanism was suspected; these cases had negative aPL at the onset of chorea, but IgM aCL antibodies became positive later. CONCLUSIONS: In most episodes, chorea seems to be immunologically mediated and was associated with a later appearance of IgM aCL antibodies. Chorea in patients with lupus may also be caused by cerebral ischemia, and in some cases, it may be associated with IgG aCL antibodies.
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