J Clin Microbiol
University of the Witwatersrand, Faculty of Health Sciences, School of Pathology, Department of Molecular Medicine and Haematology, Johannesburg, South Africa
Published: July 2016
The use of nucleic acid detection for HIV type 1 (HIV-1) detection is strongly recommended in infants <18 months of age, in whom serology is unreliable. This study evaluated the Cobas AmpliPrep/Cobas TaqMan HIV-1 Qualitative Test v2.0 (TaqMan HIV-1 Qual Test, v2.0), a dual-target total nucleic acid real-time PCR assay. The limit of detection (LOD) of the new test in plasma and dried blood spots (DBS) was determined with the 2nd International HIV-1 RNA WHO standard. The specificity of the assay was tested with EDTA plasma (n = 1,301) and DBS from HIV-negative adults (n = 1,000). The sensitivity was determined using HIV-1-positive samples (n = 169 adult EDTA plasma, n = 172 adult DBS, and n = 100 infant DBS) that included group M, subtypes A to H, CRF01_AE, CRF02_AG, and groups O and N. All positive specimens and a subset of the negative specimens were also tested with the Abbott RealTime HIV-1 Qual assay (RealTime). The LOD of the TaqMan assay was 20 copies/ml in plasma and 300 copies/ml in DBS, with specificities of 99.8% in plasma and 99.9% in DBS. The TaqMan assay results were 100% concordant with RealTime results in EDTA plasma samples and in 100 HIV-1-negative adult DBS. Among 172 HIV-1-positive DBS from adults, the TaqMan assay showed positive results for all DBS while RealTime missed five DBS with low target concentrations. Infant DBS results were 100% concordant. The improved sensitivity of the Cobas AmpliPrep/Cobas TaqMan HIV-1 Qualitative Test, v2.0, compared to current commercially available assays may enable earlier diagnosis and treatment in adults and infants. The dual-target test may ensure HIV-1 detection even if a mutation is present in one of the two target regions. The DBS sample matrix facilitates virological testing in remote areas.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4922129 | PMC |
http://dx.doi.org/10.1128/JCM.00128-16 | DOI Listing |
Bioanalysis
January 2025
Eli Lilly and Company, Indianapolis, IN, USA.
The 18th Workshop on Recent Issues in Bioanalysis (18th WRIB) took place in San Antonio, TX, USA on May 6-10, 2024. Over 1100 professionals representing pharma/biotech companies, CROs, and multiple regulatory agencies convened to actively discuss the most current topics of interest in bioanalysis. The 18th WRIB included 3 Main Workshops and 7 Specialized Workshops that together spanned 1 week to allow an exhaustive and thorough coverage of all major issues in bioanalysis of biomarkers, immunogenicity, gene therapy, cell therapy and vaccines.
View Article and Find Full Text PDFFront Biosci (Landmark Ed)
January 2025
Department of Chemoradiotherapy, Ningbo No 2 Hospital, 315000 Ningbo, Zhejiang, China.
Background: Breast cancer stem cells (BCSCs) are instrumental in treatment resistance, recurrence, and metastasis. The development of breast cancer and radiation sensitivity is intimately pertinent to long non-coding RNA (lncRNA). This work is formulated to investigate how the lncRNA affects the stemness and radioresistance of BCSCs.
View Article and Find Full Text PDFFront Biosci (Landmark Ed)
January 2025
Department of Nutrition and Dietetics, School of Health Sciences and Education, Harokopio University, 17676 Athens, Greece.
Platelet aggregation and inflammation play a crucial role in atherothrombosis. Wine contains micro-constituents of proper quality and quantity that exert cardioprotective actions, partly through inhibiting platelet-activating factor (PAF), a potent inflammatory and thrombotic lipid mediator. However, wine cannot be consumed extensively due to the presence of ethanol.
View Article and Find Full Text PDFBr J Hosp Med (Lond)
January 2025
Speech and Language Rehabilitation Department, Beijing Rehabilitation Hospital Affiliated with Capital Medical University, Beijing, China.
The background for establishing and verifying a dehydration prediction model for elderly patients with post-stroke dysphagia (PSD) based on General Utility for Latent Process (GULP) is as follows: For elderly patients with PSD, GULP technology is utilized to build a dehydration prediction model. This aims to improve the accuracy of dehydration risk assessment and provide clinical intervention, thereby offering a scientific basis and enhancing patient prognosis. This research highlights the innovative application of GULP technology in constructing complex medical prediction models and addresses the special health needs of elderly stroke patients.
View Article and Find Full Text PDFJ Biophotonics
January 2025
Center for Photonic Science and Engineering, Skolkovo Institute of Science and Technology, Moscow, Russia.
Skin homeostasis is strongly dependent on its hydration levels, making skin water content measurement vital across various fields, including medicine, cosmetology, and sports science. Noninvasive diagnostic techniques are particularly relevant for clinical applications due to their minimal risk of side effects. A range of optical methods have been developed for this purpose, each with unique physical principles, advantages, and limitations.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!
© LitMetric 2025. All rights reserved.