Pui Hong Alex Chung

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The complete nucleotide sequence of the RNA genome of papaya ringspot virus (PRSV) was determined from four overlapping cDNA clones and by direct sequencing of viral RNA. The genomic RNA is 10326 nucleotides in length, excluding the poly(A) tract, and contains one large open reading frame that starts at nucleotide positions 86 to 88 and ends at positions(More)
OBJECTIVES Although the treatment of pregnant women and their infants with zidovudine (ZDV) has been remarkably effective in preventing the perinatal transmission of human HIV-1, many potentially preventable infections still occur. To examine whether the risk of perinatal infection is increased among women who carry ZDV-resistant HIV-1, the role of(More)
OBJECTIVE To examine the patterns of vertical transmission of zidovudine (ZDV) resistance mutations. DESIGN HIV-1 reverse transcriptase codons 10-250 were sequenced from 24 pairs of ZDV-exposed women and their HIV-infected infants as part of the Women and Infants Transmission Study. METHODS Viral RNA was extracted from tissue culture supernatants and(More)
CD209 (DC-SIGN) is an important C-type lectin which acts a receptor of many pathogens. The single nucleotide polymorphism (SNP) -336A>G in the CD209 promoter has been demonstrated to regulate promoter activity and to be associated with several important infectious diseases, such as human immunodeficiency virus-1 (HIV-1), Mycobacterium tuberculosis, and(More)
Genetic polymorphisms have been demonstrated to be associated with vulnerability to human infection. ICAM3, an intercellular adhesion molecule important for T cell activation, and FCER2 (CD23), an immune response gene, both located on chromosome 19p13.3, were investigated for host genetic susceptibility and association with clinical outcome. A case-control(More)
BACKGROUND Mutations in the human immunodeficiency virus type 1 (HIV-1) reverse transcriptase (RT) gene confer resistance to antiviral drugs acting on RT. Current methods employed to detect such resistance require time-consuming culture techniques during which selective pressures may affect the outcome of the test. OBJECTIVES We sought to determine(More)
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