Little is known on the impact of HIV-2 infection on HCV viral replication. The aim of the study was to compare HCV prevalence and viral replication based on HIV types in West Africa. A cross-sectional survey was conducted within the IeDEA HIV-2 West Africa cohort from March to December 2012. All HIVinfected adult patients who attended participating HIV clinics during the study period were included. Blood samples were collected and re-tested for HIV type discrimination, HCV serology and viral load. A total of 767 patients were enrolled: 186 HIV-1, 431 HIV-2 and 150 HIV-1&2 dually reactive. At time of sampling, 531 (69.2%) were on ART and median CD4+ cell count was 472/mm. Thirty (3.9%, 95% CI 2.7-5.5) patients were anti-HCV positive (4.3% in HIV-1, 4.0% in HIV-1&2 dually reactive and 3.7% in HIV-2; p=0.91). Detectable HCV RNA was identified in 21 (70.0%) patients (100% in HIV-1 and HIV- 1&2 dually reactive vs. 43.8% in HIV-2; p=0.003). Systematic screening should be promoted and performed in this population, since HCV is now potentially curable in sub- Saharan Africa.
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http://dx.doi.org/10.4081/jphia.2018.871 | DOI Listing |
bioRxiv
November 2024
Department of Molecular & Cellular Pharmacology, University of Miami Miller School of Medicine, Miami, FL, USA.
Cell death regulation is essential for stress adaptation and/or signal response. Past studies have shown that eukaryotic cell death is mediated by an evolutionarily conserved enzyme, arginyltransferase1 (Ate1). The downregulation of Ate1, as seen in many types of cancer, prominently increases cellular tolerance to a variety of stressing conditions.
View Article and Find Full Text PDFJ Exp Med
December 2024
Translational Clinical Research Program, Hospital del Mar Research Institute, Barcelona, Spain.
The human gut includes plasma cells (PCs) expressing immunoglobulin A1 (IgA1) or IgA2, two structurally distinct IgA subclasses with elusive regulation, function, and reactivity. We show here that intestinal IgA1+ and IgA2+ PCs co-emerged early in life, comparably accumulated somatic mutations, and were enriched within short-lived CD19+ and long-lived CD19- PC subsets, respectively. IgA2+ PCs were extensively clonally related to IgA1+ PCs and a subset of them presumably emerged from IgA1+ precursors.
View Article and Find Full Text PDFJ Colloid Interface Sci
January 2025
School of Pharmacy, Guangdong Medical University, Dongguan 523000, China. Electronic address:
Chemodynamic therapy (CDT) is emerging as a promising treatment for biofilm infections. However, its effectiveness is significantly hindered by several factors: the body's stable temperature, a limited supply of Fe ions, and inadequate endogenous levels of HO at the infection sites. Herin, our study introduces MPN-crosslinked hyaluronic acid (HA) nanogels as an effective strategy for treating biofilm-associated infections.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
January 2025
Department of Chemistry, University of Missouri, 601 S College Ave, Columbia, Missouri, 65211, United States.
Chemical reactions conducted in the solid phase (specifically, crystalline) are much less numerous than solution reactions, primarily due to reduced motion, flexibility, and reactivity. The main advantage of crystalline-state transformations is that reactant molecules can be designed to self-assemble into specific spatial arrangements, often leading to high control over product regiochemistry and/or stereochemistry. In crystalline-phase transformations, typically only one type of reaction occurs, and a sacrificial template molecule is frequently used to facilitate self-assembly, similar to a catalyst or enzyme.
View Article and Find Full Text PDFJ Am Chem Soc
August 2024
School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637457, Singapore.
Bioorthogonal pretargeting optical imaging shows the potential for enhanced diagnosis and prognosis. However, the bioorthogonal handles, known for being "always reactive", may engage in reactions at unintended sites with their counterparts, resulting in nonspecific fluorescence activation and diminishing detection specificity. Meanwhile, despite the importance of detecting senescent cancer cells in cancer therapy, current methods mainly rely on common single senescence-associated biomarkers, which lack specificity for differentiating between various types of senescent cells.
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