Relevance of anti-nef antibody detection in human sera as an early marker of HIV infection.Int Conf AIDS 1990 Jun 20-23; 6:319 (abstract no. 1021)Bahraoui E, Benjouad A, Sabatier JM, Allain JP, Laurian Y, Gluckman JC, Montagnier L; CNRS UA 1179 Marseille, France OBJECTIVE: To study the relevance of anti-nef antibodies detection as an early marker of HIV infection. METHODS: Anti-nef antibodies were detected by RIA with recombinant 125I nef expressed in E. Coli and by ELISA using synthetic peptides. The following points were investigated: i) the kinetics of appearance of anti-ne
 | Effect of low-speed centrifugation on recovery of HIV from cell-free virus stocks and from serum.Int Conf AIDS 1990 Jun 20-23; 6:319 (abstract no. 1022)Shepp D, Ashraf A; North Shore University Hospital - Cornell University Medical College, Manhasset, NY, USA OBJECTIVE: To determine if low-speed centrifugation of susceptible cell lines during viral adsorption can enhance isolation of HIV from stock virus preparations and from cell-free clinical sources. METHODS: Duplicate cultures of 2.5x10(6) normal PHA-stimulated lymphoblasts (PHAB) or H9 cells were combined with 0.5 ml o
Detection of PCR products by a novel liquid phase detection system: monitoring HIV-1 infected patients during anti-viral therapy.Int Conf AIDS 1990 Jun 20-23; 6:319 (abstract no. 1023)Bankowski MJ, Kuhns M, McNamara A, Schade S, Birkenmeyer L, Kucik S, Kennedy M, Urbanski P, Hagerty J, Farrington K, et al; Rush-Presbyterian-St. Luke's Medical Center, Chicago, IL., USA OBJECTIVE: PCR in conjunction with a sensitive and quantitative hybridization assay might be useful in monitoring HIV-infected patients undergoing anti-viral therapy. These patients are usually monitored by culture, HIV-1 antigen (p24), or lymphocyte subset analysis. In early symptomatic disease, these tests may lack t
Methodological aspects and clinical value of HIV recovery from peripheral-blood mononuclear cells, plasma and whole-blood.Int Conf AIDS 1990 Jun 20-23; 6:320 (abstract no. 1024)Cuneo P, Sigari G, Losi E, Zemignan M, Arenare L, Bonafede L; Inst. Hyg. Prev Med University Genoa, Italy OBJECTIVE: To evaluate the result of different techniques for HIV isolation from blood (whole blood, PBMC and plasma). Our aim is both monitoring clinical evolution in seropositive patients and the finding out the most useful method for HIV recovery in subjects with indetermined serological pattern or seronegative ones
6th International AIDS Conference PCR analysis of HIV-1 proviral sequences in sero-negative and -positive hemophiliacs.Int Conf AIDS 1990 Jun 20-23; 6:320 (abstract no. 1025)Hassan HJ, Chelucci C, Leonardi A, Gringeri A, Mannucci PM, Peschle C; Dept. of Hematology-Oncology, Istituto Superiore di Sanita, Rome, Italy OBJECTIVE: We have studied two matched groups of hemophilia A patients, comprising 25 seronegative and 18 seropositive subjects: all were similarly treated in 81- 85 with commercial not virus-inactivated factor VIII concentrates (greater than 75% equivalent batches were used in all patients). Since the possibility has
Demonstration by in situ hybridization of HIV1 gag-pol provirus transcription in peripheral blood mononuclear cells of a patient with a negative antigenaemia.Int Conf AIDS 1990 Jun 20-23; 6:320 (abstract no. 1026)Delord B, Pellegrin JL, Fleury HJ; Centre Hospitalier Regional et Universite de Bordeaux II, Bordeaux, France OBJECTIVE: To investigate the transcription of HIV1 provirus in Peripheral Blood Mononuclear Cells (PBMC) of a patient with a negative antigenaemia. METHODS: Patient of stage II of CDC with a negative HIV1 antigenaemia (HIV1 Ag) as determined by Abbott Enzyme Immunosorbent Assay after treatment of the sample with Trito
San Francisco, California USA — Jun 20-23, 1990 An enzyme-linked immunoabsorbant assay for human immunodeficiency virus 1 envelope glycoprotein-120.Int Conf AIDS 1990 Jun 20-23; 6:320 (abstract no. 1027)Gilbert M, Kirihara J, Mills J; University of California, San Francisco, California, USA OBJECTIVES: A test that can measure gp120 concentration would be useful in laboratory and clinical studies with HIV. METHODS: Recombinant, soluble CD4 (rsCD4) immobilized in microtiter trays was used to capture gp120, which was then detected with a three-layer detector-amplification system consisting of polyclonal shee
Detection of HIV by a non-radioactive sensitive reverse transcriptase assay.Int Conf AIDS 1990 Jun 20-23; 6:321 (abstract no. 1028)Lee M, Kusakabe H, Reisinger D, Takasaki T, Sano K, Imagawa D; Harbor-UCLA Medical Center, California, USA OBJECTIVE: To develop a reverse transcriptase (RT) assay that does not require use of a radioisotope, we tested a dTTP analog, digoxigenin-dUTP (Boehringer Mannheim Biochemicals), for its ability to be made into DNA. METHODS: The in vitro RT assay employed a poly rA oligo dT synthetic template primer at 37 degrees C fo
| A rapid sensitive non-isotopic hybrid-capture assay for HIV nucleic acid sequences.Int Conf AIDS 1990 Jun 20-23; 6:321 (abstract no. 1029)Maltzman W, Lee LS, Moore JL, Schochetman G, Ou CY; Enzo Biochem, New York, New York, USA OBJECTIVE: To develop a sensitive non-isotopic capture system to detect HIV nucleic acids. METHODS: To capture target nucleic acids, an oligonucleotide sequence derived from a conserved gag or env region of HIV-1 genome was immobilized in a microtiter plate. HIV DNA was captured by the immobilized oligonucleotide via h