Abstract
By analogy with other infections of the central nervous system (CNS), it is believed that schistosomal myeloradiculopathy (SMR) is an entity that may involve a mild-to-moderate degree of impairment of the blood-brain barrier along with intrathecal synthesis of antibodies. The first of these aspects is obvious but the second has not been clearly demonstrated. This study was undertaken in Brazil with the aim of investigating the production of immunoglobulin G (IgG) within the CNS in patients with SMR, by the determination of the cerebrospinal fluid (CSF) IgG index. The study population included 54 patients with SMR, evaluated prospectively. The CSF IgG index was increased in 43 of them (80%). Preliminary results from our laboratory suggest that these antibodies are reactive against Schistosoma mansoni antigens. Thus, this finding also suggests that this index may be useful in the differential diagnosis of SMR.
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