150 440

Cited 0 times in

Evaluation of methods for monitoring drug resistance in chronic hepatitis B patients during lamivudine therapy based on mass spectrometry and reverse hybridization

 Hyon-Suk Kim  ;  Kwang-Hyub Han  ;  Sang Hoon Ahn  ;  Eun-Ok Kim  ;  Hye-Young Chang  ;  Myoung Soon Moon  ;  Hyun Jae Chung  ;  Wangdon Yoo  ;  Soo-Ok Kim  ;  Sun Pyo Hong 
 ANTIVIRAL THERAPY, Vol.10(3) : 441-449, 2005 
Journal Title
Issue Date
Antiviral Agents/therapeutic use* ; DNA, Viral ; Drug Monitoring ; Drug Resistance, Viral* ; Genetic Variation ; Hepatitis B virus/drug effects* ; Hepatitis B virus/genetics ; Hepatitis B, Chronic/drug therapy* ; Humans ; Lamivudine/therapeutic use* ; Mutation ; Polymorphism, Restriction Fragment Length ; Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization/methods*
A matrix-assisted laser desorption/ionization time-of-flight mass spectrometry-based genotyping assay, termed restriction fragment mass polymorphism (RFMP) has been recently developed for detecting hepatitis B virus (HBV) mutants. The assay is based on PCR amplification and mass measurement of oligonucleotides containing sites of mutations that confer resistance to lamivudine. We compared the efficacy and usefulness of the RFMP assay with a commercial assay using a reverse hybridization line probe technology, namely INNO-LiPA HBV DR (referred to henceforth as the LiPA assay), for the detection of lamivudine-resistant HBV mutants. A total of 60 patient samples were analysed for the presence of mutations at rtL180M and rtM204I/V of HBV polymerase by the LiPA and RFMP assays. The ability to detect mutations at rtM204I/V was compared with defined mixtures of wild-type and mutant HBV cloned in plasmids at relative concentrations ranging from 1–25%. Concordance between methods was found to be 95.0% (57/60) when only the presence of resistance mutations was considered, regardless of quasispecies. In three cases, additional minor populations of resistant viruses were identified by RFMP. Defined mixtures were consistently successfully identified at a 1% relative concentration of mutant versus wild-type viruses by the RFMP assay and 4% by the LiPA assay. The RFMP assay proved to be an accurate and reliable tool for detection of lamivudine-resistant mutations and was more sensitive than the LiPA assay in detecting mixtures of mutant and wild-type viruses. The improved sensitivity of the RPMP assay can help monitor drug resistance as it develops, enabling early intervention and prevention.
Files in This Item:
T200500260.pdf Download
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Laboratory Medicine (진단검사의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Yonsei Biomedical Research Center (연세의생명연구원) > 1. Journal Papers
Yonsei Authors
Kim, Hyon Suk(김현숙) ORCID logo https://orcid.org/0000-0001-5662-7740
Ahn, Sang Hoon(안상훈) ORCID logo https://orcid.org/0000-0002-3629-4624
Chang, Hye Young(장혜영)
Han, Kwang-Hyub(한광협) ORCID logo https://orcid.org/0000-0003-3960-6539
사서에게 알리기


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.