USING a specific enzyme-linked immunosorbent assay (ELISA) for human n
erve growth factor (NGF), serum levels in patients with systemic lupus
erythematosus (SLE) were measured. We found a consistent increase in
NGF levels in SLE patients compared with controls. A good correlation
exists between serum NGF level and severity of clinical manifestation.
We hypothesize that NGF might play a role in the pathogenesis of auto
immune disorders such as SLE.