title: Genotypic and phenotypic changes during culture of a multinucleoside-resistant human immunodeficiency virus type 1 strain in the presence and absence of additional reverse transcriptase inhibitors.
abstract: The observation that human immunodeficiency virus type 1 (HIV-1) mutations conferring resistance to one reverse transcriptase (RT) inhibitor may suppress resistance to other RT inhibitors provides a rationale for treating HIV-1 with certain RT inhibitor combinations. We examined phenotypic and genotypic changes during culture of a multinucleoside (zidovudine, didanosine, zalcitibine, and stavudine)-resistant HIV-1 strain with and without additional RT inhibitors (nevirapine and lamivudine). The development of nevirapine or lamivudine resistance by the multinucleoside-resistant strain was not accompanied by a reduction in zidovudine or didanosine resistance.
authors.affiliation: Division of Infectious Diseases and Geographic Medicine, Stanford University, California 94305, USA.
authors.forename: R W
authors.initials: RW
authors.lastname: Shafer
authors.forename: M A
authors.initials: MA
authors.lastname: Winters
authors.forename: A K
authors.initials: AK
authors.lastname: Iversen
authors.forename: T C
authors.initials: TC
authors.lastname: Merigan
mesh_terms: D000998:Antiviral Agents / Q000494:pharmacology*; D002460:Cell Line; D002478:Cells, Cultured; D016049:Didanosine / Q000494:pharmacology; D004347:Drug Interactions; D004352:Drug Resistance, Microbial / Q000235:genetics; D018432:Drug Resistance, Multiple / Q000235:genetics; D005838:Genotype; D015497:HIV-1 / Q000187:drug effects* / Q000235:genetics; D006801:Humans; D019259:Lamivudine / Q000494:pharmacology; D009154:Mutation; D019829:Nevirapine; D011725:Pyridines / Q000494:pharmacology; D018894:Reverse Transcriptase Inhibitors / Q000494:pharmacology*; D014779:Virus Replication; D015215:Zidovudine / Q000494:pharmacology
chemical_list: D000998:Antiviral Agents; D011725:Pyridines; D018894:Reverse Transcriptase Inhibitors; D019259:Lamivudine; D015215:Zidovudine; D019829:Nevirapine; D016049:Didanosine