title: Detection of hepatitis B virus genotypes using oligonucleotide chip among hepatitis B virus carriers in Eastern China.
abstract: OBJECTIVE
  To determine the genotype distribution of hepatitis B virus (HBV) with a newly oligonucleotide chip assay among the HBV carriers in Eastern China.
  
  
  METHODS
  An assay using oligonucleotide chip was developed for detection of HBV genotypes in serum samples from HBV DNA-positive patients in Eastern China. This method is based on the principle of reverse hybridization with Cy5-labeled amplicons hybridizing to type-specific oligonucleotide probes that are immobilized on slides. The results of 80 randomly chosen sera were confirmed by direct sequencing.
  
  
  RESULTS
  HBV genotype B, C and mixed genotype were detected in 400 serum samples, accounting for 8.3% (n = 33), 83.2% (n = 333), and 8.5% (n = 34), respectively. The evaluation of the oligonucleotide assay showed 100% concordance with the amplicon phylogenetic analysis except 9 mixed genotype infections undetected by sequencing.
  
  
  CONCLUSIONS
  The study indicates that HBV genotype C and B prevail in the Eastern China. It is suggested that the oligonucleotide chip is a reliable and convenient tool for the detection of HBV genotyping.
authors.affiliation: Shanghai Institute of Microsystem and Information Technology, CAS, No. 865, Changning Road, Shanghai 200050, China.
authors.forename: Xiang-Rong
authors.initials: XR
authors.lastname: Tang
authors.forename: Ji-Shen
authors.initials: JS
authors.lastname: Zhang
authors.forename: Hui
authors.initials: H
authors.lastname: Zhao
authors.forename: Yu-Hua
authors.initials: YH
authors.lastname: Gong
authors.forename: Yong-Zhong
authors.initials: YZ
authors.lastname: Wang
authors.forename: Jian-Long
authors.initials: JL
authors.lastname: Zhao
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002681:China / Q000453:epidemiology; D015342:DNA Probes; D004279:DNA, Viral / Q000097:blood / Q000235:genetics*; D005260:Female; D006580:Genetic Carrier Screening / Q000379:methods*; D005838:Genotype; D006509:Hepatitis B / Q000175:diagnosis / Q000453:epidemiology* / Q000235:genetics*; D006515:Hepatitis B virus / Q000235:genetics*; D006801:Humans; D008297:Male; D008875:Middle Aged; D020411:Oligonucleotide Array Sequence Analysis / Q000379:methods*
chemical_list: D015342:DNA Probes; D004279:DNA, Viral