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Blood-based diagnosis of pediatric tuberculosis: a prospective cohort study in South Africa and Dominican Republic.
J Infect
January 2025
Center for Cellular and Molecular Diagnostics, Department of Biochemistry and Molecular Biology, Tulane University School of Medicine, New Orleans, LA, USA. Electronic address:
Objectives: Pediatric tuberculosis (TB) diagnosis is complicated by challenges in obtaining invasive respiratory specimens that frequently contain few Mycobacterium tuberculosis (Mtb) bacilli. We report the diagnostic performance of an Mtb antigen-derived peptide (MAP-TB) assay and its ability to monitor TB treatment response.
Methods: Study cohorts enrolled children who presented with presumptive TB at two hospitals in South Africa from 2012 to 2017 (157 children aged <13 years) and at community-based clinics in the Dominican Republic from 2019 to 2023 (101 children aged <18 years).
Application of a targeted amplicon sequencing panel to screen for insecticide resistance mutations in Anopheles darlingi populations from Brazil.
Sci Rep
January 2025
Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, UK.
Large-scale surveillance and informed vector control approaches are urgently needed to ensure that national malaria programs remain effective in reducing transmission and, ultimately, achieving malaria elimination targets. In South America, Anopheles darlingi is the primary malaria vector and is responsible for the majority of Plasmodium species transmission. However, little is known about the molecular markers associated with insecticide resistance in this species.
View Article and Find Full Text PDFProteo-SAFARI: An R Application for Identification of Fragment Ions in Top-Down MS/MS Spectra of Proteins.
J Proteome Res
January 2025
Department of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States.
Proteo-SAFARI is a shiny application for fragment assignment by relative isotopes, an R-based software application designed for identification of protein fragment ions directly in the / domain. This program provides an open-source, user-friendly application for identification of fragment ions from a candidate protein sequence with support for custom covalent modifications and various visualizations of identified fragments. Additionally, Proteo-SAFARI includes a nonnegative least-squares fitting approach to determine the contributions of various hydrogen shifted fragment ions ( + 1, + 1, - 1, - 2) observed in UVPD mass spectra which exhibit overlapping isotopic distributions.
View Article and Find Full Text PDFDetecting somatic variants in purified brain DNA obtained from surgically implanted depth electrodes in epilepsy.
Epilepsia
January 2025
Department of Clinical Neurosciences, University of Calgary, Calgary, Alberta, Canada.
Objective: Somatic variants causing epilepsy are challenging to detect, as they are only present in a subset of brain cells (e.g., mosaic), resulting in low variant allele frequencies.
View Article and Find Full Text PDFBasic Science and Pathogenesis.
Alzheimers Dement
December 2024
Indiana University School of Medicine, Indianapolis, IN, USA.
Background: Although pharmacokinetics and pharmacodynamics of biotherapeutics are commonly studied through ELISAs; however, the extremely strong binding of modern antibody-based therapeutics result in background, inability of secondary antibody binding, and nonlinear response curves. The selectivity and specificity imparted through the use of liquid chromatography-targeted mass spectrometry (LC-MS/MS) allows for absolute quantitation of chosen peptides. For MODEL-AD, here we present a high-throughput workflow for absolute quantification of chimeric aducanumab from cortex and plasma of 5XFAD mice.
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