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BACKGROUND Kaposi's sarcoma (KS) is a complication of renal transplantation. If the human herpesvirus-8 (HHV-8) causes KS, the virus should be present in all KS lesions and be drastically reduced or cleared from involved tissue on remission of the KS. METHODS Fourteen renal transplant patients with cutaneous KS, including autopsy material from two cases,(More)
To acquire new knowledge about the genetic diversity and potential impact on vaccine strategies of HIV-1 subtype C in South Africa, we have characterized the vif, vpr, and vpu genes of 15 isolates. Phylogenetic analysis of the genomic fragment encompassing these genes revealed subtype C subclusters, suggesting close relatedness with subtype C strains from(More)
HIV-1 is a major health problem in South Africa with an average prevalence rate of 29.1% in pregnant women and between 4.9 and 6.1 million people infected. Using env gp120 V3 serotyping and genotyping techniques 410 patient samples were investigated. Most of the samples were obtained from different clinics in the greater Cape Town area of the Western Cape(More)
BACKGROUND Most mutations detected for the gene for CC chemokine receptor 5 (CCR5) are either relatively specific to different population groups or rarely observed in Africans. OBJECTIVES To develop a comprehensive mutation detection assay for the entire coding region of CCR5 and to identify novel mutations that may play a role in genetic susceptibility(More)
BACKGROUND Improved vaccination strategies against tuberculosis are needed, such as approaches to boost immunity induced by the current vaccine, BCG. Design of these strategies has been hampered by a lack of knowledge of the kinetics of the human host response induced by neonatal BCG vaccination. Furthermore, the functional and phenotypic attributes of(More)
BACKGROUND The incidence of oral squamous cell carcinoma (OSCC) is on the increase in developing countries. MATERIALS AND METHODS Formalin fixed paraffin embedded blocks of OSCCs from a Black South African population sample of peri-urban and rural origin were selected as follows: Group 1 - 57 OSCCs with a mean age of 59 years; Group 2 - 43 OSCCs all cases(More)
The aetiology and detection of human herpes virus type 8 (HHV-8) DNA sequences in Kaposi's sarcoma (KS) is a matter of intense investigation. We report on the detection of HHV-8 DNA and sequence polymorphism in different clinicopathological subtypes of cutaneous KS samples from South Africa. The diagnosis was confirmed by histological examination in all(More)
In this study the formation of DNA single-strand breaks in MNL in close proximity to activated phagocytes, or in contact with added H2O2 and/or HOCl, were evaluated. Neutrophils activated by phorbol myristate acetate (PMA), induced DNA-strand breaks in neighboring lymphocytes which increased after 1-2 h incubation in a repair medium. These DNA-strand breaks(More)