Recent evidence challenges the belief that individuals who are Duffy-negative are resistant to Plasmodium vivax due to lacking the Duffy antigen receptor for chemokines. Erythrocyte-binding protein (EBP/DBP2) has shown moderate binding to Duffy-negative erythrocytes in vitro. Reticulocyte-binding protein 2b (RBP2b) interactions with transferrin receptor 1 suggest involvement in Duffy-negative infections. Gene copy number variations in PvDBP1, PvEBP/DBP2, and PvRBP2b were investigated in Duffy-positive and Duffy-negative P vivax infections from Ethiopia. Among Duffy-positive samples, 34% displayed PvDBP1 duplications (Cambodian type). In Duffy-negative infections, 30% showed duplications, mostly Cambodian type. For PvEBP/DBP2 and PvRBP2b, Duffy-positive samples exhibited higher duplication rates (1-8 copies for PvEBP/DBP2, 46%; 1-5 copies for PvRBP2b, 43%) as compared with Duffy-negative samples (20.8% and 26%, respectively). The range of copy number variations was lower in Duffy-negative infections. Demographic and clinical factors associated with gene multiplications in both Duffy types were explored, enhancing understanding of P vivax evolution in Africans who are Duffy negative.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11481331 | PMC |
| http://dx.doi.org/10.1093/infdis/jiae388 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Recent single-cell experiments that measure copy numbers of over 40 proteins in individual cells at different time points [time-stamped snapshot (TSS) data] exhibit cell-to-cell variability. Because the same cells cannot be tracked over time, TSS data provide key information about the time-evolution of protein abundances that could yield mechanisms that underlie signaling kinetics. We recently developed a generalized method of moments (GMM) based approach that estimates parameters of mechanistic models using TSS data.
View Article and Find Full Text PDFChanges in the copy number of large genomic regions, termed copy number variations (CNVs), contribute to important phenotypes in many organisms. CNVs are readily identified using conventional approaches when present in a large fraction of the cell population. However, CNVs that are present in only a few genomes across a population are often overlooked but important; if beneficial under specific conditions, a de novo CNV that arises in a single genome can expand during selection to create a larger population of cells with novel characteristics.
View Article and Find Full Text PDFCryo-EM structure of the conjugation H-pilus reveals the cyclic nature of the TrhA pilin.
bioRxiv
December 2024
Rutherford Appleton Laboratory, Research Complex at Harwell, Didcot, Oxfordshire, UK.
Conjugation, the major driver of the spread of antimicrobial resistance genes, relies on a conjugation pilus for DNA transfer. Conjugative pili, such as the F-pilus, are dynamic tubular structures, composed of a polymerized pilin, that mediate the initial donor-recipient interactions, a process known as mating pair formation (MPF). IncH are low-copy-number plasmids, traditionally considered broad host range, which are found in bacteria infecting both humans and animals.
View Article and Find Full Text PDFIntroduction: Structural variants (SVs) of the nebulin gene ( ), including intragenic duplications, deletions, and copy number variation of the triplicate region, are an established cause of recessively inherited nemaline myopathies and related neuromuscular disorders. Large deletions have been shown to cause dominantly inherited distal myopathies. Here we provide an overview of 35 families with muscle disorders caused by such SVs in .
View Article and Find Full Text PDFFamilial hypercholesterolemia - Targeted whole gene sequencing as a diagnostic approach.
Atheroscler Plus
March 2025
Department of Laboratory Medicine, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.
Background And Aims: Familial hypercholesterolemia (FH) and other disorders with similar features are common genetic disorders that remain underdiagnosed and undertreated, due in part to the cost of screening. The aim of this study was to design and implement a whole gene targeted NGS panel for the molecular diagnosis of FH and statin intolerance with an emphasis on high quality variant calling, including copy number analysis.
Methods: A whole gene panel for hybridisation-based short read NGS was designed for the dominant FH-genes low density lipoprotein receptor (), apolipoprotein B (APOB), proproteinconvertas subtilisin/kexin type 9 (PCSK9), apolipoprotein E (APOE) and the recessive FH-genes low density lipoprotein receptor adaptor protein 1 (), ATP binding cassette subfamily member 5/8 (ABCG5/8) and lipase A, lysosomal acid type (), as well as solute carrier organic anion transporter family member 1B1 (), not an FH gene but linked to statin intolerance.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!