title: Zidovudine genotypic resistance in HIV-1-infected newborns in the French perinatal cohort.
abstract: A retrospective study was set up to investigate the frequency of zidovudine (ZDV)-resistant HIV-1 in infected newborns after ZDV prophylaxis in the French Perinatal Cohort study. Nucleotide sequence analysis was carried out from 34 infants' isolates and 18 maternal plasma samples. Mutations related to ZDV resistance were found in the HIV-1 reverse transcriptase in 7 of 34 children (20%). Evidence of mother-child transmission of ZDV-resistant HIV-1 was found in 4 cases. Phylogenetic analysis showed that 14 of 34 HIV-1 isolates from the infants belonged to non-B subtypes. The presence of ZDV resistance-encoding mutations in the newborn isolates was associated with a longer total duration of exposure to ZDV. In a context of a wide HIV-1 variability, ZDV resistance can be one of the factors contributing to mother-child transmission.
authors.affiliation: Laboratoires de Virologie, Centres Hospitaliers Universitaires de Bordeaux, Hôpital Pellegrin, Place Amelie Raba Léon, 33076 Bordeaux CEDEX France. bernard.masquelier@chu-bordeaux.fr
authors.forename: B
authors.initials: B
authors.lastname: Masquelier
authors.forename: M L
authors.initials: ML
authors.lastname: Chaix
authors.forename: M
authors.initials: M
authors.lastname: Burgard
authors.forename: J
authors.initials: J
authors.lastname: Lechenadec
authors.forename: A
authors.initials: A
authors.lastname: Doussin
authors.forename: F
authors.initials: F
authors.lastname: Simon
authors.forename: J
authors.initials: J
authors.lastname: Cottalorda
authors.forename: J
authors.initials: J
authors.lastname: Izopet
authors.forename: C
authors.initials: C
authors.lastname: Tamalet
authors.forename: D
authors.initials: D
authors.lastname: Douard
authors.forename: H
authors.initials: H
authors.lastname: Fleury
authors.forename: M J
authors.initials: MJ
authors.lastname: Mayaux
authors.forename: S
authors.initials: S
authors.lastname: Blanche
authors.forename: C
authors.initials: C
authors.lastname: Rouzioux
mesh_terms: D019380:Anti-HIV Agents / Q000494:pharmacology* / Q000627:therapeutic use; D015331:Cohort Studies; D004352:Drug Resistance, Microbial / Q000235:genetics; D005260:Female; D005602:France; D015658:HIV Infections / Q000517:prevention & control / Q000821:virology*; D054303:HIV Reverse Transcriptase / Q000235:genetics; D015497:HIV-1 / Q000145:classification / Q000187:drug effects* / Q000235:genetics*; D006801:Humans; D007231:Infant, Newborn; D018445:Infectious Disease Transmission, Vertical / Q000517:prevention & control*; D008969:Molecular Sequence Data; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000821:virology; D012367:RNA, Viral / Q000097:blood; D012189:Retrospective Studies; D018894:Reverse Transcriptase Inhibitors / Q000494:pharmacology* / Q000627:therapeutic use; D015215:Zidovudine / Q000494:pharmacology* / Q000627:therapeutic use
chemical_list: D019380:Anti-HIV Agents; D012367:RNA, Viral; D018894:Reverse Transcriptase Inhibitors; D015215:Zidovudine; D054303:HIV Reverse Transcriptase