Publications by authors named "Brian Kullin"

Purpose Of Review: Women in Africa bear the burden of the HIV epidemic, which has been associated with the high prevalence of bacterial vaginosis (BV) in the region. However, little progress has been made in finding an effective cure for BV. Drawing on advances in microbiome-directed therapies for gastrointestinal disorders, similar live-biotherapeutic based approaches for BV treatment are being evaluated.

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Article Synopsis
  • Depletion of species in the vaginal tract leads to bacterial vaginosis (BV), which is linked to poor reproductive health and higher risk of STIs; current antibiotic treatments have low success rates.
  • A study conducted in Cape Town explored blood donors' knowledge and attitudes toward vaginal microbiota transplantation (VMT) as a potential alternative treatment for BV through a questionnaire.
  • Results showed a significant majority (86%) of women were open to donating vaginal samples, with willingness increased by a belief in helping others and prior knowledge of healthy vaginal microbiomes; concerns about discomfort and embarrassment affected those unwilling to donate.
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  • A study was conducted in South Africa to assess the feasibility of establishing a stool donor bank in collaboration with WCBS and UCT, focusing on the willingness of blood donors to donate stool samples for microbiome research.
  • The survey, conducted with 209 blood donors, revealed that compensation and the perceived societal benefits significantly influenced the willingness to donate, while age also played a minor role.
  • The findings highlight important factors for potential donors and mark the first investigation into the perspectives of participants for a stool microbiome biobank in South Africa, which is crucial for fecal microbiota transplantation (FMT).
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Clostridioides (Clostridium) difficile infection (CDI) places a burden on healthcare facilities worldwide. Most research studies have been concentrated in high-income countries in North America, Europe, Asia and Australia, where C. difficile is the leading cause of diarrhoea associated with antimicrobial use.

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While live biotherapeutics offer a promising approach to optimizing vaginal microbiota, the presence of functional prophages within introduced strains could impact their safety and efficacy. We evaluated the presence of prophages in 895 publicly available genomes using Phaster, Phigaro, Phispy, Prophet and Virsorter. Prophages were identified according to stringent (detected by ≥4 methods) or lenient criteria (detected by ≥2 methods), both with >80% reciprocal sequence overlap.

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Introduction: Clostridioides difficile is primarily associated with hospital-acquired diarrhoea. The disease burden is aggravated in patients with comorbidities due to increased likelihood of polypharmacy, extended hospital stays and compromised immunity. The study aimed to investigate comorbidity predictors of healthcare facility-onset C.

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Article Synopsis
  • Clostridioides difficile infection (CDI) poses a serious global health threat, with significant changes in its epidemiology over the past 20 years due to genetic variability.
  • An analysis of over 12,000 genomes revealed major taxonomic issues, highlighting the emergence of three new cryptic clades (CI-III) that are much older than previously recognized clades C1-5.
  • These new genomospecies possess unique toxin gene structures, enhancing our understanding of CDI's evolution and potentially affecting how the infection is diagnosed in clinical settings.
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Introduction: is a neglected pathogen in many African countries as it is generally not regarded as one of the major contributors toward the diarrheal disease burden in the continent. However, several studies have suggested that infection (CDI) may be underreported in many African settings. The aim of this study was to determine the prevalence of CDI in hospitalized patients, evaluate antimicrobial exposure, and detect toxin and antimicrobial resistance profiles of the isolated strains.

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Antibiotics continue to be the standard-of-care for bacterial vaginosis (BV), although recurrence rates are high. Vaginal probiotics may improve durability of BV treatment, although few probiotics for vaginal health contain Lactobacillus spp. that commonly colonize the lower female genital tract.

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: Antimicrobial resistance (AMR) played an important role in the initial outbreaks of infection (CDI) in the 1970s. ribotype (RT) 017 has emerged as the major strain of in Asia, where antimicrobial use is poorly regulated. This strain has also caused CDI outbreaks around the world for almost 30 years.

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ribotype (RT) 017 is an important toxigenic RT which, due to a deletion in the repetitive region of the gene, only produces functional toxin B. Strains belonging to this RT were initially dismissed as nonpathogenic and circulated largely undetected for almost two decades until they rose to prominence following a series of outbreaks in the early 2000s. Despite lacking a functional toxin A, RT 017 strains have been shown subsequently to be capable of causing disease as severe as that caused by strains producing both toxins A and B.

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() sequence type 11 (ST11) is well established in production animal populations worldwide and contributes considerably to the global burden of infection (CDI) in humans. Increasing evidence of shared ancestry and genetic overlap of PCR ribotype 078 (RT078), the most common ST11 sublineage, between human and animal populations suggests that CDI may be a zoonosis. We performed whole-genome sequencing (WGS) on a collection of 207 ST11 and closely related ST258 isolates of human and veterinary/environmental origin, comprising 16 RTs collected from Australia, Asia, Europe, and North America.

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Background: Diarrhoea due to infection (CDI) poses a significant burden on healthcare systems around the world. However, there are few reports on the current status of the disease in sub-Saharan Africa.

Objectives: This study examined the occurrence of CDI in a South African population of tuberculosis patients, as well as the molecular epidemiology and antibiotic susceptibility profiles of strains responsible for disease.

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Accurate diagnosis of infection is essential for disease management. A clinical and molecular analysis of isolated from symptomatic patients at Groote Schuur Hospital, South Africa, was conducted to establish the most suitable clinical test for the diagnosis and characterization of locally prevalent strains. was detected in stool samples using enzyme-based immunoassays (EIA) and nucleic acid amplification methods, and their performance was compared with that of isolation using direct selective culture combined with specific PCR to detect the gene, toxin A and B genes and binary toxin genes.

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Background: Diarrhoea due to gastrointestinal infections is a significant problem facing the South African (SA) healthcare system. Infections can be acquired both from the community and from the hospital environment itself, the latter acting as a reservoir for potential pathogenic bacteria.

Objectives: To examine the prevalence of a panel of potential diarrhoea-causing bacteria in patients attending a tertiary healthcare facility in Cape Town, SA.

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