Document 3036 DOCN M94A3036 TI Is neopterin a diagnostic marker in early HIV neuromanifestations? DT 9412 AU Jandl M; Enzensberger W; Enzensberger R; Proescholdt M; Demisch L; Fischer PA; Dept. of Neurology, University Hosp. Frankfurt/Germany. SO Int Conf AIDS. 1994 Aug 7-12;10(1):168 (abstract no. PB0098). Unique Identifier : AIDSLINE ICA10/94369539 AB OBJECTIVE: Diagnosis of underlying HIV infection may be difficult in early neuromanifestations. In this study we tried to assess the role of neopterin as a further tool for detecting HIV infection. METHODS: Follow-up examinations in CSF and serum were performed in a female patient with acute meningoencephalitis before and during HIV seroconversion. RESULTS: HIV-ELISA, Western blot, and HIV-antigen in CSF and HIV-ELISA in serum were negative on day 1. However, neopterin was already significantly elevated in CSF (24.1 mumol/l) and serum (5.4), compared with normal individuals (3.5 +/- 1.7). When HIV seroconversion was documented by ELISA and Western blot on day 11, neopterin concentrations reached even higher levels (133.6 in CSF and 21.5 in serum). DISCUSSION AND CONCLUSIONS: Neopterin in CSF and serum may be an important diagnostic marker in early HIV neuromanifestations, when HIV testing is still negative in some cases. DE AIDS Dementia Complex/*DIAGNOSIS/IMMUNOLOGY AIDS-Related Opportunistic Infections/DIAGNOSIS/IMMUNOLOGY Biopterin/*ANALOGS & DERIVATIVES/CEREBROSPINAL FLUID Blotting, Western Enzyme-Linked Immunosorbent Assay Female Follow-Up Studies Human HIV Infections/*DIAGNOSIS/IMMUNOLOGY Meningoencephalitis/DIAGNOSIS/IMMUNOLOGY MEETING ABSTRACT SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).