Medical Microbiology
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Stool culture for diagnosis of pulmonary tuberculosis in children
(American Society for Microbiology, 2017-12)Bacteriological confirmation of Mycobacterium tuberculosis is achieved in the minority of young children with tuberculosis (TB), since specimen collection is resource intensive and respiratory secretions are mostly ...
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Laboratory-acquired infections of Salmonella enterica serotype Typhi in South Africa : phenotypic and genotypic analysis of isolates
(BioMed Central, 2017-9)Background: Workers in clinical microbiology laboratories are exposed to a variety of pathogenic microorganisms. Salmonella species is among the most commonly reported bacterial causes of laboratory-acquired infections. ...
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Molecular detection of Mycobacterium tuberculosis in stool of children with suspected intrathoracic tuberculosis
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH SUMMARY: The bacteriological confirmation of tuberculosis in children is challenging. The current diagnostic gold standard, liquid culture of respiratory specimens, has low sensitivity in paucibacillary paediatric ...
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First report of Wohlfahrtiimonas chitiniclastica bacteraemia in South Africa
(Health & Medical Publishing Group, 2016)ENGLISH ABSTRACT: No abstract available
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Plasmid-mediated mcr-1 colistin resistance in Escherichia coli and Klebsiella spp. clinical isolates from the Western Cape region of South Africa
(BioMed Central, 2017-08-03)Background: Colistin is a last resort antibiotic for the treatment of carbapenem-resistant Gram negative infections. Until recently, mechanisms of colistin resistance were limited to chromosomal mutations which confer a ...
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Rationale and design of the African group A streptococcal infection registry : the AFROStrep study
(BMJ Publishing Group, 2016)Introduction: Group A β-haemolytic Streptococcus (GAS), a Gram-positive bacterium, also known as Streptococcus pyogenes, causes pyoderma, pharyngitis and invasive disease. Repeated GAS infections may lead to autoimmune ...
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Characteristics and outcome of children with juvenile dermatomyositis in Cape Town: a cross-sectional study
(BioMed Central, 2016-11-11)Background: Juvenile dermatomyositis (JDM) is a rare idiopathic inflammatory childhood myopathy of uncertain aetiology. The demographic and clinical presentation of JDM may differ by race and geographic regions. Few ...
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Molecular characterization of Staphylococcus aureus isolates from various healthcare institutions in Nairobi, Kenya : a cross sectional study
(BioMed Central, 2016-09-20)Background: Staphylococcus aureus (S. aureus) has established itself over the years as a major cause of morbidity and mortality both within the community and in healthcare settings. Methicillin resistant S. aureus (MRSA) ...
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Genotypic and epidemiological characterization of Methicillin resistant Staphylococcus aureus (MRSA) and Coagulase Negative Staphylococcal (CoNS) strains isolated at Tygerberg Hospital
(Stellenbosch : Stellenbosch University, 2016-12)Background The global burden of methicillin resistant Staphylococcus aureus (MRSA) can be largely attributed to S. aureus’ ability to acquire the resistance element, SCCmec (Staphylococcal chromosome complex mec). ...
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The molecular epidemiology of pneumocystis jirovecii in Cape Town, South Africa
(Stellenbosch : Stellenbosch University, 2016-12)ENGLISH ABSTRACT : Pneumocystis jirovecii is an opportunistic fungal pathogen that causes Pneumocystis pneumonia (PCP) in immunocompromized hosts. PCP is associated with substantial morbidity, and mortality rates range ...
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Time for a culture change? suboptimal compliance with blood culture standards at a district hospital in Cape Town
(Health and Medical Publishing Group, 2015)Background. The benchmark for contaminated blood cultures (BCs) is 3%. The South African (SA) guideline aims to optimise BC yield and reduce contamination. Data on BC collection practices in SA since the publication of the ...
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Role of infection control in combating antibiotic resistance
(Health & Medical Publishing Group, 2015)Infection control has been identified as one of the key interventions in controlling the threat of antibiotic resistance. Reducing the transmission of multidrug-resistant organisms (MDROs) reduces the need for broad-spectrum ...
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Obesity is associated with increased seminal insulin and leptin alongside reduced fertility parameters in a controlled male cohort
(BioMed Central, 2014)Background: Obesity appears to be associated with male reproductive dysfunction and infertility, although this has been inconsistent and inconclusive. Insulin and leptin are known mediators and modulators of the ...
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Rapid diagnosis of cryptococcal meningitis by use of lateral flow assay on cerebrospinal fluid samples : influence of the high-dose “hook” effect
(American Society for Microbiology, 2014)Cryptococcal meningitis is the most frequent cause of meningitis and a major cause of mortality in HIV-infected adults in Africa. This study evaluated the performance of the lateral flow assay (LFA) on cerebrospinal fluid ...
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The routine paediatric human immunodeficiency virus visit as an intervention opportunity for failed maternal care, and use of point-of-care CD4 testing as an adjunct in determining antiretroviral therapy eligibility
(Medpharm Publications, 2014)South African women and children remain at the centre of the human immunodeficiency virus (HIV) pandemic, and maternal well-being plays a critical role in child health. In this study, we evaluated the impact of the paediatric ...
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Biomarkers of HIV-associated cancer
(Libertas Academica, 2014)Cancer biomarkers have provided great opportunities for improving the management of cancer patients by enhancing the efficiency of early detection, diagnosis, and efficacy of treatment. Every cell type has a unique molecular ...
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In vitro activity of tigecycline and comparators against Gram-positive and Gram-negative isolates collected from the Middle East and Africa between 2004 and 2011
(Elsevier, 2014)The Tigecycline Evaluation and Surveillance Trial (T.E.S.T.) was established in 2004 to monitor longitudinal changes in bacterial susceptibility to numerous antimicrobial agents, specifically tigecycline. In this study, ...
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National sentinel site surveillance for antimicrobial resistance in Klebsiella pneumoniae isolates in South Africa, 2010-2012
(Health & Medical Publishing Group, 2014-08)Background. The increasing rates of antimicrobial resistance observed in the nosocomial pathogen Klebsiella pneumoniae are of major public health concern worldwide. Objectives. To describe the antibiotic susceptibility ...
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Molecular diagnostic approach to determine the degree of photoaging of the skin
(Stellenbosch : Stellenbosch University, 2015-04)ENGLISH ABSTRACT: Context: Excessive exposure to ultraviolet radiation (UV) results in the risk of acquiring long-term harmful effects such as photoaging, which is characterised by deep wrinkles, roughness, dyspigmentation ...
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A phenotypic and genotypic characterisation of strain types, virulence factors and agr groups of colonising Staphylococcus aureus associated with bloodstream infection
(Stellenbosch : Stellenbosch University, 2015-03)ENGLISH ABSTRACT : Several studies investigating the molecular characteristics of Staphylococcus aureus have been conducted worldwide, however, in South Africa, most of these have focused on Methicillinresistant S. aureus ...
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Biofilm formation in invasive Staphylococcus aureus isolates is associated with the clonal lineage
(Stellenbosch : Stellenbosch UniversityElsevier, 2016-01)ENGLISH ABSTRACT: Objectives: The ability to form biofilms contributes significantly to the virulence of Staphylococcus aureus. Virulence factors may be associated with certain S. aureus lineages. However, the contribution ...
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Antibody responses to vaccination among South African HIV-exposed and unexposed uninfected infants during the first 2 years of life
(American Society for Microbiology, 2013-01)HIV-exposed but uninfected (HEU) infants born to HIV-infected mothers from areas in the world with a high burden of infectious disease suffer higher infectious morbidity and mortality than their HIV unexposed uninfected ...
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SDS interferes with SaeS signalling of Staphylococcus aureus independently of SaePQ
(Public Library of Science, 2013-08-20)The Staphylococcus aureus regulatory saePQRS system controls the expression of numerous virulence factors, including extracellular adherence protein (Eap), which amongst others facilitates invasion of host cells. The saePQRS ...
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Antibiotic stewardship ward rounds and a dedicated prescription chart reduce antibiotic consumption and pharmacy costs without affecting inpatient mortality or re-admission rates
(Public Library of Science, 2013-12-09)Background Antibiotic consumption is a major driver of bacterial resistance. To address the increasing burden of multi-drug resistant bacterial infections, antibiotic stewardship programmes are promoted worldwide to ...
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Pneumocystis pneumonia in South African children diagnosed by molecular methods
(BioMed Central, 2014-01)Abstract Background Pneumocystis pneumonia (PCP) is an important cause of hospitalization and mortality in HIV-infected children. However, the incidence of PCP has been underestimated ...
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Management of uncomplicated malaria
(Health and Medical Publishing Group (HMPG), 2008-06)The key issues in the successful management of malaria are early and accurate diagnosis and urgent treatment with effective drugs. Disease presentation is, however, not specific – progression to complicated disease may ...
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Ontogeny of toll-like receptor mediated cytokine responses of South African infants throughout the first year of life
(Public Library of Science, 2012-09-13)The first year of life represents a time of marked susceptibility to infections; this is particularly true for regions in sub-Saharan Africa. As innate immunity directs the adaptive immune response, the observed increased ...
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Sarcomeric modifiers of hypertrophy in hypertrophic cardiomyopathy (HCM)
(Stellenbosch : Stellenbosch University, 2013-03)ENGLISH ABSTRACT: Left ventricular hypertrophy (LVH) is an independent predictor of cardiovascular morbidity and allcause mortality. Significantly, it is considered a modifiable cardiovascular risk factor as its regression ...
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Treatment and prevention of trichuriasis : efficacy of albendazole in disadvantaged children at Rawsonville Primary School, Western Cape Province, South Africa
(Stellenbosch : Stellenbosch University, 2000-12)ENGLISH ABSTRACT: Children in socioeconomically disadvantaged communities in the Western Cape and elsewhere in South Africa are frequently infected by Trichuris trichiura. Although albendazole and mebendazole are listed as ...
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The relevance of apoptosis in the pathogenesis of human immunodeficiency virus-1 disease
(Stellenbosch : Stellenbosch University, 2004-12)ENGLISH ABSTRACT: A simple and rapid scatter-based flow cytometric assay was developed to detect apoptosis in CD4+ and CD8+ T cells from a mixed population of cells. The assay was suitable for children. Apoptotic PBMCs ...
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