Document 2860 DOCN M94A2860 TI Study of 31 acute HIV-1 infection (API). DT 9412 AU Sinicco A; Biglino A; Gioannini P; Inst. Infect. Diseases, Univ. of Turin, Italy. SO Int Conf AIDS. 1994 Aug 7-12;10(1):208 (abstract no. PB0262). Unique Identifier : AIDSLINE ICA10/94369715 AB We directly observed 31 API and 168 asymptomatic seroconversions (AS) in patients (pts) who were seronegative in the previous 12 months. API was more frequently seen in pts who had HIV-1 through sex (chi 2 = 29.1; p = .00000). Api clinical aspects ranged from flu-like syndrome to mononucleosis-like syndrome. Two pts had a polyneuropathy and 2 a meningitis. At onset, all the pts were anti-HIV-1Ab (ELISA) negative and 27/32 had serum p24Ag. Serum p24Ag was found after immune complex dissociation in the other pts. CD4+/CD8+ ratio was low in most pts because of CD8+ increase, whereas CD4+ were slightly low. NK were also increased. Seroconversion with ELISA occurred in a mean time of 41.7 +/- 15.3 days. HIV-1 with rapid-high syncytium inducing phenotype was isolated in 4/7 pts. At the onset, in 15 pts IL-2 serum levels was low, soluble CD8 antigen, IL-1 beta, IFN-gamma and 5'-neopterin were increased. Follow-up showed significant decrease of IL-1 beta levels and increase of IL-6. API pts resulted significantly at higher risk of developing AIDS than AS (43% vs 7% at 45 months; p = .00001). On the basis of our results the early administration of antiviral drugs and IL-2 is of interest. DE Acquired Immunodeficiency Syndrome/EPIDEMIOLOGY Antigens, CD8/ANALYSIS AIDS-Related Complex/BLOOD/COMPLICATIONS/*EPIDEMIOLOGY/ MICROBIOLOGY/TRANSMISSION Biopterin/ANALOGS & DERIVATIVES/BLOOD Comparative Study Cytopathogenic Effect, Viral Enzyme-Linked Immunosorbent Assay Human HIV Antibodies/BIOSYNTHESIS HIV Seropositivity *HIV-1/ISOLATION & PURIF Interferon Type II/BLOOD Interleukin-1/BLOOD Interleukin-2/BLOOD/DEFICIENCY Meningitis/ETIOLOGY Peripheral Nervous System Diseases/ETIOLOGY Phenotype Prospective Studies Risk Factors Sex Behavior MEETING ABSTRACT SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).