title: Direct detection of Helicobacter pylori mutations associated with macrolide resistance in gastric biopsy material taken from human immunodeficiency virus-infected subjects.
abstract: One hundred forty gastric biopsies were tested by microbiological methods and by amplifying a sequence of 23S rRNA and identifying mutations associated to clarithromycin resistance. Seventy-six specimens were positive for Helicobacter pylori. Mutational analysis revealed alterations in 18 (39.1%) of 46 and 2 (8.7%) of 23 samples from human immunodeficiency virus-seropositive and -seronegative persons, respectively. The results of the mutational analysis fully correlated with those of the susceptibility tests.
authors.affiliation: Infectious Diseases Division, San Raffaele Scientific Institute, Milan, Italy. scarpellini.paolo@hsr.it
authors.forename: Paolo
authors.initials: P
authors.lastname: Scarpellini
authors.forename: Paola
authors.initials: P
authors.lastname: Carrera
authors.forename: Annalisa
authors.initials: A
authors.lastname: Cavallero
authors.forename: Massimo
authors.initials: M
authors.lastname: Cernuschi
authors.forename: Gianni
authors.initials: G
authors.lastname: Mezzi
authors.forename: Pier Alberto
authors.initials: PA
authors.lastname: Testoni
authors.forename: Anna
authors.initials: A
authors.lastname: Zingale
authors.forename: Adriano
authors.initials: A
authors.lastname: Lazzarin
mesh_terms: D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D001706:Biopsy; D017291:Clarithromycin / Q000494:pharmacology*; D004275:DNA, Ribosomal / Q000032:analysis; D024881:Drug Resistance, Bacterial / Q000235:genetics*; D004591:Electrophoresis, Polyacrylamide Gel / Q000379:methods; D005260:Female; D015658:HIV Infections / Q000150:complications* / Q000382:microbiology; D016481:Helicobacter Infections / Q000382:microbiology; D016480:Helicobacter pylori / Q000187:drug effects* / Q000235:genetics / Q000302:isolation & purification; D006801:Humans; D008297:Male; D008826:Microbial Sensitivity Tests; D009154:Mutation; D012338:RNA, Ribosomal, 23S / Q000235:genetics; D013270:Stomach
chemical_list: D000900:Anti-Bacterial Agents; D004275:DNA, Ribosomal; D012338:RNA, Ribosomal, 23S; D017291:Clarithromycin