title: Surveillance of transmitted HIV type 1 drug resistance in newly diagnosed hiv type 1-infected patients in Shandong Province, China.
abstract: A survey to measure transmitted HIV-1 drug resistance (DR) was conducted in 2006 following the World Health Organization threshold survey protocol. Dried blood spots (DBS) were prepared from 53 newly HIV-1-diagnosed patients. Protease and reverse transcriptase (RT) gene regions were sequenced using a broadly sensitive genotyping assay and analyses to identify DR mutations and determine phylogeny of the HIV-1 strains were conducted. Forty-six of the 47 successfully genotyped DBS had no transmitted DR mutations; one had an NNRTI mutation (K101E) in the RT region. Phylogenetic analyses revealed 21 (44.7%) were CRF01_AE, 9 (19.1%) B, 6 (12.8%) CRF07_BC, 3 (6.4%) each of CRF08_BC and C, and 2 (4.3%) B/C unique recombinant forms (URF). The remaining three were one each of A/B, A/C, and unclassifiable. Our analyses indicate that the prevalence of transmitted DR in this population is low and the HIV-1 epidemic in the area was characterized by multiple subtypes and recombinant forms.
authors.affiliation: Institute of AIDS/HIV Control and Prevention, Shandong Center for Disease Control and Prevention, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Zhang
authors.forename: Dianmin
authors.initials: D
authors.lastname: Kang
authors.forename: Jihua
authors.initials: J
authors.lastname: Fu
authors.forename: Xiaoguang
authors.initials: X
authors.lastname: Sun
authors.forename: Bin
authors.initials: B
authors.lastname: Lin
authors.forename: Zhenqiang
authors.initials: Z
authors.lastname: Bi
authors.forename: John N
authors.initials: JN
authors.lastname: Nkengasong
authors.forename: Chunfu
authors.initials: C
authors.lastname: Yang
mesh_terms: D000293:Adolescent; D002681:China; D016000:Cluster Analysis; D024882:Drug Resistance, Viral; D005260:Female; D005838:Genotype; D015658:HIV Infections / Q000635:transmission* / Q000821:virology*; D016333:HIV Protease / Q000235:genetics; D054303:HIV Reverse Transcriptase / Q000235:genetics; D015497:HIV-1 / Q000145:classification / Q000187:drug effects* / Q000235:genetics / Q000302:isolation & purification; D006801:Humans; D008297:Male; D008969:Molecular Sequence Data; D010802:Phylogeny; D011995:Recombination, Genetic; D017422:Sequence Analysis, DNA; D017385:Sequence Homology; D055815:Young Adult
chemical_list: C514824:reverse transcriptase, Human immunodeficiency virus 1; D054303:HIV Reverse Transcriptase; D016333:HIV Protease