Search results for " lamivudine resistant"

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Variability of reverse transcriptase and overlapping S gene in hepatitis B virus isolates from untreated and lamivudine-resistant chronic hepatitis B…

2009

Background The high degree of diversity of the hepatitis B virus (HBV) quasispecies in chronically infected individuals raises the possibility that HBV genetic variants favouring resistance to nucleoside/nucleotide analogues (NAs) might pre-exist to treatment. The aim of this study was to investigate the genetic variability of the entire HBV reverse transcriptase (RT) domain and of the overlapping S gene in a large series of untreated hepatitis B surface antigen carriers and in lamivudine (3TC)-resistant patients. Methods Sequencing analysis of the entire HBV RT domain of isolates from 100 untreated (treatment- naive group) and 59 3TC-resistant (3TC-resistant group) consecutive patients wit…

AdultMaleSettore MED/07 - Microbiologia E Microbiologia ClinicaHepatitis B virusAdult; Aged; Drug Resistance; Viral; Female; Genetic Variation; Hepatitis B Surface Antigens; Hepatitis B virus; Hepatitis B; Chronic; Humans; Lamivudine; Male; Middle Aged; Mutation; RNA-Directed DNA Polymerase; Reverse Transcriptase Inhibitors; Sequence Analysis; DNA; Treatment OutcomeDrug ResistanceViral quasispeciesmedicine.disease_causeVirusHepatitis B ChronicOrthohepadnavirusDrug Resistance ViralmedicineHumansPharmacology (medical)ViralChronicAgedPharmacologyHepatitis B virusSettore MED/12 - GastroenterologiaHepatitis B Surface AntigensbiologyReverse-transcriptase inhibitorLamivudineGenetic VariationRNA-Directed DNA PolymeraseSequence Analysis DNADNAMiddle Agedbiology.organism_classificationHepatitis BVirologyReverse transcriptaseInfectious DiseasesTreatment OutcomeHepadnaviridaeLamivudineMutationReverse Transcriptase InhibitorsHBV reverse transcriptase gene S lamivudine resistantFemaleSequence Analysismedicine.drug
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