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From the Neurology Center for Stroke Research (Drs. Tietjen, Aurora, and Levine, and M. Day, L. Norris, and A. Halvorsen) and the Department of Biostatistics and Research Epidemiology (Dr. Schultz), Henry Ford Hospital and Health Sciences Center, Detroit, MI (Detroit Campus of Case Western Reserve University).
Address correspondence and reprint requests to Dr. Gretchen E. Tietjen, Division of Neurology, Medical College of Ohio, 3120 Glendale Ave, P.O. Box 10008, Toledo, OH 43699-0008.
Anticardiolipin antibodies (aCL) are a risk factor for cerebral ischemia. In migraine, the association is controversial, with widely varying results in different small series. The controversy in part may be due to the inherent difficulty in distinguishing the transient focal neurologic events (TFNE) of migraine from TIA. To assess the frequency of aCL in migraine, we prospectively evaluated consecutive adults under 60 years of age with migraine without aura and with recent TFNE (<24-hour duration) clinically suggestive of either migraine with aura or TIA. We concomitantly enrolled persons with no CNS disease. Each person was interviewed and had blood drawn for solid-phase ELISA with IgG and IgM aCL isotyping. Neuroradiologic studies were reviewed. Patients with TFNE were followed every 6 months for the duration of the 3-year study. The frequency of aCL positivity (IgG >20, IgG >40, IgM >7.5) for the 645 patients with TFNE (8.8, 3.1, 4.2%), the 518 persons in the TFNE subgroup with migraine with aura (8.9, 3.3, 4.1%), the 497 persons with migraine without aura (7.0, 2.0, 3.6%), and the 366 control subjects (9.3, 3.6, 3.9%) did not differ significantly between groups. In TFNE patients with elevated aCL titer, the association was positive with diabetes mellitus, TFNE duration <15 minutes, and diplopia and was negative with hemiparesis, tinnitus, and family history of stroke. Findings on imaging consistent with cerebral ischemia were more frequent in aCL-positive persons. The short-term risk of stroke was uniformly low. In young persons, aCL is not associated with migraine or with TFNE, although diabetes mellitus, negative family history of stroke, and brief duration of symptoms (including diplopia) may predict immunoreactivity. Imaging studies suggest an ischemic etiology of TFNE in this cohort.
Supported in part by National Institutes of Health grants NS 30896 and NS 23393 and the Fund for Henry Ford Hospital.
Received May 2, 1997. Accepted in final form December 1, 1997.
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