title: Acquisition of syncytium-inducing HIV-1 strains during therapy with zidovudine alone or combined with alpha interferon or didanosine.
abstract: The effect of antiretroviral treatment on HIV-1 phenotype was studied in a group of 83 nucleoside-naive patients. These initially nonsyncytium-inducing HIV-1 positive patients were followed prospectively for their HIV-1 phenotype. Syncytium-inducing variants were detected by cocultivation of peripheral blood mononuclear cells with the MT-2 T-cell line. Overall, 16 of 83 (19%) patients underwent a shift to syncytium-inducing phenotype: 11 of 67 during zidovudine treatment, 3 of 10 during zidovudine plus alpha interferon treatment, and 2 of 6 under initial zidovudine plus didanosine therapy. The results of this study demonstrate that neither zidovudine therapy alone nor combined with interferon or didanosine prevents the acquisition of syncytium-inducing strains.
authors.affiliation: Department of Biochemistry, Virgen del Rocio University Hospital, Seville, Spain.
authors.forename: Y
authors.initials: Y
authors.lastname: Torres
authors.forename: M
authors.initials: M
authors.lastname: Leal
authors.forename: C
authors.initials: C
authors.lastname: Rey
authors.forename: F J
authors.initials: FJ
authors.lastname: Medrano
authors.forename: A
authors.initials: A
authors.lastname: Sánchez-Quijano
authors.forename: E
authors.initials: E
authors.lastname: Lissen
mesh_terms: D000328:Adult; D019380:Anti-HIV Agents / Q000627:therapeutic use*; D018791:CD4 Lymphocyte Count; D016049:Didanosine / Q000627:therapeutic use*; D004359:Drug Therapy, Combination; D005260:Female; D015726:Giant Cells / Q000473:pathology / Q000821:virology; D015658:HIV Infections / Q000188:drug therapy* / Q000473:pathology; D015497:HIV-1 / Q000235:genetics*; D006801:Humans; D016898:Interferon-alpha / Q000627:therapeutic use*; D008297:Male; D010641:Phenotype; D011446:Prospective Studies; D015215:Zidovudine / Q000627:therapeutic use*
chemical_list: D019380:Anti-HIV Agents; D016898:Interferon-alpha; D015215:Zidovudine; D016049:Didanosine