PMID- 8844017 OWN - NLM STAT- MEDLINE DCOM- 19961231 LR - 20071114 IS - 0889-2229 (Print) IS - 0889-2229 (Linking) VI - 12 IP - 12 DP - 1996 Aug 10 TI - HIV-specific cellular and humoral immune responses in primary HIV infection. PG - 1129-40 AB - Primary human immunodeficiency virus (HIV) infection is characterized by a high-titer viremia that declines precipitously within weeks, most likely as a result of host immune responses. Peripheral blood mononuclear cells (PBMCs) and plasma of four recently HIV-infected individuals were examined to assess the humoral and cellular immune responses potentially involved in early suppression of viral replication. Neutralizing antibodies against autologous viral isolates were low or undetectable in three subjects studied. Cellular cytotoxicity was assayed using Epstein-Barr virus (EBV)-transformed B lymphoblastoid cell lines (B-LCLs) infected with recombinant vaccinia that express HIV-1 proteins. HIV envelope-specific cytotoxicity, which was not mediated by CD8+ cells nor human leukocyte antigen (HLA) class I restricted, developed in PBMCs of all four subjects early after primary infection, but was not correlated with declines in viremia. Gag-specific cytotoxic T lymphocyte (CTL) activity was observed in freshly isolated PBMCs of two subjects, and HIV-specific CTL cell lines were cultured from PBMCs of three subjects shortly after HIV infection. Antibody-dependent cellular cytotoxicity (ADCC) developed early in all four subjects, and was temporally correlated with declines in viremia in two subjects in whom viral load was well characterized. These data suggest that both CTL responses and ADCC may be critical to control of viral replication in acute HIV infection. FAU - Connick, E AU - Connick E AD - Department of Medicine, University of Colorado Health Sciences Center, Denver 80220, USA. FAU - Marr, D G AU - Marr DG FAU - Zhang, X Q AU - Zhang XQ FAU - Clark, S J AU - Clark SJ FAU - Saag, M S AU - Saag MS FAU - Schooley, R T AU - Schooley RT FAU - Curiel, T J AU - Curiel TJ LA - eng GR - IT32 AI07447-01/AI/NIAID NIH HHS/United States GR - R01-CA37461/CA/NCI NIH HHS/United States PT - Case Reports PT - Journal Article PT - Research Support, U.S. Gov't, P.H.S. PL - United States TA - AIDS Res Hum Retroviruses JT - AIDS research and human retroviruses JID - 8709376 RN - 0 (Antibodies, Viral) SB - IM MH - Adult MH - Antibodies, Viral/*immunology MH - Antibody Formation MH - CD8-Positive T-Lymphocytes/immunology MH - Female MH - HIV Infections/*immunology MH - HIV-1/*isolation & purification MH - Humans MH - *Immunity, Cellular MH - Male EDAT- 1996/08/10 00:00 MHDA- 1996/08/10 00:01 CRDT- 1996/08/10 00:00 PHST- 1996/08/10 00:00 [pubmed] PHST- 1996/08/10 00:01 [medline] PHST- 1996/08/10 00:00 [entrez] AID - 10.1089/aid.1996.12.1129 [doi] PST - ppublish SO - AIDS Res Hum Retroviruses. 1996 Aug 10;12(12):1129-40. doi: 10.1089/aid.1996.12.1129.