African strains of Blastomyces dermatitidis differ from North American strains in their growth, morphology, and clinical disease phenotype. In addition, two serotypes, designated 1 and 2, have been described. We investigated African strains of B. dermatitidis for expression of the surface protein adhesin WI-1 and found that serotype 2 strains do not express it because they lack the coding sequence in their genome. The defect will make the strains useful for gene complementation and for testing the pathogenetic role of the WI-1 adhesin.
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http://dx.doi.org/10.1128/iai.65.4.1505-1509.1997 | DOI Listing |
J Psychiatr Res
January 2025
Department of Psychiatry, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa; South African Medical Research Council Genomics of Brain Disorders Unit, Department of Psychiatry, Faculty of Medicine and Health Sciences, Stellenbosch University, South Africa.
Background: The pathophysiology of posttraumatic stress disorder (PTSD) involves dysregulation of stress-sensitive biological systems due to repeated trauma exposure, predisposing individuals to the development of cardiovascular disease (CVD). Allostatic load (AL), an indicator of maladaptive stress responses, could shed light on the underlying biological mechanisms. We determined whether CVD risk and AL were associated with trauma load and resilience in women with PTSD and trauma-exposed controls (TEC).
View Article and Find Full Text PDFAppl Environ Microbiol
January 2025
State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China.
The biosynthesis of mupirocin, a clinically significant antibiotic produced by sp. NCIMB 10586, is activated by the -acyl homoserine lactone (AHL) MupR/I quorum sensing (QS) system. However, to date, limited research has focused on the influence of global regulators such as the GacS/A two-component system (TCS) on the MupR/I QS system or mupirocin biosynthesis.
View Article and Find Full Text PDFRSC Adv
January 2025
Department of Medicinal Chemistry, Institute of Medical Sciences, Banaras Hindu University Varanasi UP-221005 India
The antibacterial efficacy of some newly developed bis- and C3-carboxylic moieties of fluoroquinolone-linked triazole conjugates was studied. Twenty compounds from two different series of triazoles were synthesized using click chemistry and evaluated for their antibacterial activity against a Gram-positive strain, (ATCC29212), and its clinical isolate and a Gram-negative bacterial strain, (ATCC25922), and its clinical isolate. Among the compounds, 7, 9a, 9d, 9i, 10(a-d), and 10i showed excellent activity with MIC values of up to 6.
View Article and Find Full Text PDFJ Biomech
January 2025
Division of Cardiology, Department of Medicine, University of Cape Town, Cape Town, South Africa; Cape Universities Body Imaging Centre, Faculty of Health Sciences, University of Cape Town, South Africa; South African Medical Research Council Extramural Unit on Intersection of Noncommunicable Diseases and Infectious Diseases. Electronic address:
Understanding the elastic material behavior of myocardium during the diastolic phase is critical for evaluating cardiac function and improving treatments for diastolic abnormalities. This study introduces a novel multi-objective optimization framework that incorporates both strain and volume measurements to enhance the accuracy of myocardial property assessments in Rheumatic Heart Disease (RHD) patients and healthy controls. By employing global volume and strain measurements instead of segmented strains from the sixteen AHA regions, we achieve a robust alignment with the Klotz curve across all groups, indicating an accurate simulation of end-diastolic pressure-volume relationships (EDPVRs).
View Article and Find Full Text PDFFront Reprod Health
January 2025
Community Medicine and Global Health, University of Oslo, Oslo, Norway.
Introduction: Community health volunteers (CHVs) are fundamental in many health systems across the globe. In Kenya, CHVs were essential in providing sexual and reproductive health (SRH) services during the COVID-19 pandemic. The study highlights challenges experienced by community health volunteers in Kenya while providing SRH services during the COVID-19 pandemic.
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