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Browsing by Author "Lewis, David A."

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    Inflammatory cytokine biomarkers to identify women with asymptomatic sexually transmitted infections and bacterial vaginosis who are at high risk of HIV infection.
    (BMJ., 2016) Masson, Lindi.; Arnold, Kelly B.; Little, Francesca.; Mlisana, Koleka Patience.; Lewis, David A.; Mkhize, Nonhlanhla.; Gamieldien, Hoyam.; Ngcapu, Sinaye.; Johnson, Leigh.; Lauffenburger, Douglas A.; Abdool Karim, Quarraisha.; Abdool Karim, Salim Safurdeen.; Passmore, Jo-Ann Shelley.
    Abstract available in pdf.
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    Killer-cell immunoglobulin-like receptor genotyping and HLA killer-cell immunoglobulin-like receptor-ligand identification by real-time polymerase chain reaction.
    (John Wiley & Sons., 2011) Hong, H. A.; Loubser, A. S.; de Assis Rosa, Debra.; Naranbhai, Vivek.; Carr, William Henry.; Paximadis, Maria.; Lewis, David A.; Tiemessen, Caroline Tanya.; Gray, Clive M.
    The effector function of natural killer (NK) cells is modulated by surface expression of a range of killer-cell immunoglobulin-like receptors (KIRs) that interact with human leukocyte antigen (HLA) class I ligands. We describe the use of real-time polymerase chain reaction (PCR) assays that allow easy and quick detection of 16 KIR genes and the presence/absence of KIR-ligands based on allelic discrimination at codon 80 in the HLA-A/B Bw4 and HLA-C C1/C2 genes. These methods overcome the tedious and expensive nature of conventional KIR genotyping and HLA class I typing using sequence-specific primer (SSP) PCR, sequence-specific oligonucleotide (SSO) hybridization or sequence-based typing (SBT). Using these two cost-effective assays, we measured the frequencies of KIRs, KIR-ligands and KIR/KIR-ligand pairs in a cohort of Black women recruited in South Africa.