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Cell-free DNA is an accessible source of genetic material found naturally in plasma that could be used in many diagnostic applications. Translation of cfDNA analysis methods from research laboratories into the clinic would benefit from controls for monitoring the efficiency of patient sample purification and for quality control of the whole workflow from extraction through to analysis. Here we describe two types of control materials that can be "spiked" into plasma samples to monitor and evaluate different aspects of the workflow. The first control material is an internal control that enables evaluation of extraction efficiency, fragment size bias, and sample inhibition. The second control material serves as a parallel quality control material for measurement of specific genetic targets such as tumor mutations.
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http://dx.doi.org/10.1007/978-1-4939-7778-9_4 | DOI Listing |
ACS Biomater Sci Eng
September 2025
Materials Engineering, McGill university, Montreal H3A0C5, Canada.
Transcutaneous devices such as dental implants frequently fail due to infections at their interfaces with epithelial tissues. These infections are facilitated by the lack of integration between the devices and the surrounding soft tissues. This study aims to improve epithelial integration through surface modification of a transcutaneous implant material (polyetheretherketone (PEEK)).
View Article and Find Full Text PDFACS Nano
September 2025
Eastern Institute for Advanced Study, Eastern Institute of Technology, Ningbo, Zhejiang 315200, P. R. China.
Ni-Fe (oxy)hydroxides are among the most active oxygen evolution reaction (OER) catalysts in alkaline media. However, achieving precise control over local asymmetric Fe-O-Ni active sites in Ni-Fe oxyhydroxides for key oxygenated intermediates' adsorption steric configuration regulation of the OER is still challenging. Herein, we report a two-step dealloying strategy to fabricate asymmetric Fe-O-Ni pair sites in the shell of NiOOH@FeOOH/NiOOH heterostructures from NiFe Prussian blue analogue (PBA) nanocubes, involving anion exchange and structure reconstruction.
View Article and Find Full Text PDFLangmuir
September 2025
Product & Process Engineering, Department of Chemical Engineering, Faculty of Applied Sciences, Delft University of Technology, 2629 HZ Delft, The Netherlands.
Noble metal nanoparticles (NPs), particularly platinum (Pt), are widely used in heterogeneous catalysis due to their exceptional activity. However, controlling their size and preventing sintering during synthesis remains a major challenge, especially when aiming for high dispersion and stability on supports such as graphene. Atomic layer deposition (ALD) has emerged as a promising method to address these issues, yet conventional processes often lead to broad particle size distributions (PSDs).
View Article and Find Full Text PDFJ Agric Food Chem
September 2025
Department of Food Science and Engineering, Ningbo University, Ningbo 315211, P.R. China.
Sleep deprivation (SD) is a major contributor to cognitive impairment, often accompanied by central neuroinflammation and gut microbiota dysbiosis. The tryptophan (TRP) pathway, activated via indoleamine 2,3-dioxygenase (IDO), serves as a critical link between immune activation and neuronal damage. Umbelliferone (UMB), a naturally occurring coumarin compound, possesses anti-inflammatory, antioxidant, and microbiota-modulating properties.
View Article and Find Full Text PDFChem Biodivers
September 2025
Chongqing Key Laboratory of Development and Utilization of DaoDi Medicinal Materials in Three Gorges Reservoir Area, Chongqing Three Gorges Medical College, Chongqing, P. R. China.
Three new steroidal saponins, kingianoside L-N (1-3), whose structures were elucidated through comprehensive spectroscopic analysis, and 15 known compounds (4-18) were isolated from Polygonatum kingianum var. grandifolium, a source of the traditional antihyperglycemic medicine Polygonati rhizome. The effects of compounds 1-13 on α-glucosidase activity were evaluated in vitro.
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