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| http://dx.doi.org/10.1136/sti.50.4.279 | DOI Listing |
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Unlabelled: The complement cascade is a front-line defense against pathogens. Complement activation generates the membrane attack complex (MAC), a 10-11 nm diameter pore formed by complement proteins C5b through C8 and polymerized C9. The MAC embeds within the outer membrane of Gram-negative bacteria and displays bactericidal activity.
View Article and Find Full Text PDFAcute gonococcal urethritis.
IDCases
December 2024
Department of Dermatology, Venereology and Leprology, Bangalore Medical College and Research Institute, Bengaluru, Karnataka, India.
Gonococcal urethritis is a sexually transmitted infection caused by obligate gram-negative diplococci, Neisseria gonorrhoeae. In a patient complaining of dysuria and urethral discharge, the diagnosis is typically confirmed by identifying the bacteria in mucosal secretions. Inadequately treated or untreated cases are at a risk of developing epididymo-orchitis, prostatitis and serious complications like disseminated gonococcal infection, meningitis, and endocarditis.
View Article and Find Full Text PDFThe effect of STI screening during pregnancy on vertical transmission of HIV and adverse pregnancy outcomes in South Africa: a modelling study.
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February 2025
Centre for Integrated Data and Epidemiological Research, School of Public Health, University of Cape Town, Cape Town, South Africa.
Introduction: Sexually transmitted infections (STIs) in pregnancy are associated with an increased risk of vertical HIV transmission and adverse pregnancy and birth outcomes. In South Africa, syndromic management is the standard of care for STI management. We assessed the potential impact of point-of-care (POC) screening for curable STIs (Chlamydia trachomatis [CT], Trichomonas vaginalis [TV] and Neisseria gonorrhoeae [NG]) during pregnancy on vertical HIV transmission and adverse pregnancy and birth outcomes.
View Article and Find Full Text PDFAntimicrobial Resistance in Curable Sexually Transmitted Infections.
Curr HIV/AIDS Rep
January 2025
Division of Global Health Equity, Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA.
Purpose Of Review: Antimicrobial resistance in sexually transmitted infections (STIs) has become an urgent global public health threat, raising the specter of untreatable infections. This review summarizes the determinants of resistance among the five most common curable STIs Neisseria gonorrhoeae, Chlamydia trachomatis, Mycoplasma genitalium, Treponema pallidum, and Trichomonas vaginalis, as well as strategies to mitigate the spread of resistance.
Recent Findings: Genetic mutations are key drivers of resistance for N.
Affinity-based covalent sialyltransferase probes enabled by ligand-directed chemistry.
Chem Sci
January 2025
Chemical Biology and Drug Discovery, Bijvoet Center for Biomolecular Research and Utrecht Institute for Pharmaceutical Sciences, Utrecht University Universiteitsweg 99 3584 CG Utrecht The Netherlands
Sialyltransferases (ST) are key enzymes found in, among others, mammals and bacteria that are responsible for producing sialylated glycans, which play critical roles in human health and disease. However, chemical tools to study sialyltransferases have been limited to non-covalent inhibitors and probes that do not allow isolation and profiling of these important enzymes. Here we report a new class of covalent affinity-based probes (AfBP) for ST by using ligand-directed chemistry (LDchem).
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