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Neopterin concentrations in cerebrospinal fluid and serum of individuals infected with HIV-1
Authors:D Fuchs  F Chiodi  J Albert  B Asj?  L Hagberg  A Hausen  G Norkrans  G Reibnegger  E R Werner  H Wachter
Affiliation:Institute of Medical Chemistry and Biochemistry, University of Innsbruck, Austria.
Abstract:Neopterin, a biochemical marker for the activation of cell-mediated immune reactions, was determined in serum and cerebrospinal fluid (CSF) from patients infected with HIV-1. A significant correlation was found between serum and CSF neopterin concentrations, although concentrations of neopterin in serum were more closely correlated with the clinical severity of HIV-1 infection than those in CSF. However, higher CSF levels were observed in patients with neurologic/psychiatric symptoms than in unaffected patients. Also, quotients of CSF neopterin versus serum neopterin concentrations were increased, indicating intrathecal production of neopterin. Positive HIV-1 isolation from peripheral blood mononuclear cells (PBMC) was associated with higher neopterin concentrations in serum, when compared with negative HIV-1 isolation. Neopterin in CSF appears to be a suitable biochemical marker in patients with HIV-1 infection for detecting overt neurologic/psychiatric disturbances. The data suggest that in HIV-1 infected patients, cell-mediated immune reactions might be activated intrathecally and might contribute to neuropsychiatric disease.
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