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In this work phospholipid quantification was carried out using an enzymatic assay based on cyclic voltammetry of the condensation product of N-ethyl-N-(2-hydroxy-3-sulfopropyl)-3,5-dimethoxyaniline sodium salt (DAOS) and 4-aminoantipyrine (4-AP) with a graphite electrode. For the optimization of electrochemical measurement for the product, electrochemical properties such as the electrochemical window, double layer capacitance (Cdl) and electron transfer rate (kapp) were analyzed for a graphite-electrode and Au-electrode. The phospholipid enzymatic assay based the on electrochemical measurement using the graphite electrode was applied to the diagnosis of sepsis for sera from healthy volunteers (n = 16), patients with systemic inflammatory response syndrome (SIRS, n = 16) and severe sepsis patients (n = 24). Finally, the phospholipid quantification results from the electrochemical measurement were statistically compared with the conventional method based on optical density measurement.
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http://dx.doi.org/10.1016/j.enzmictec.2020.109728 | DOI Listing |
Chem Biodivers
September 2025
Institute of Chemistry, Federal University of Catalão, Catalão, Brazil.
Strategies have been employed to address antimalarial drug resistance, including the exploration of new therapeutic targets. In this study, the stem bark of Dalbergia miscolobium was investigated using in vitro assays against Plasmodium falciparum and pyruvate kinase II (PyrKII), an essential enzyme for parasite development. Compounds were dereplicated from ethanolic extract (IC = 9 µg/mL) using LC-HRMS, revealing active constituents: procyanidin A1 (2), biochanin (5) and formononetin (7).
View Article and Find Full Text PDFCell Tissue Bank
September 2025
Eurofins Donor & Product Testing, LLC, Centennial, CO, USA.
In the United States, the use of Food & Drug Administration (FDA)-licensed, approved, or cleared tests is required for infectious disease screening and determining the eligibility of deceased donors for all Human Cells, Tissues, and Cellular and Tissue-Based Products (HCT/Ps). With the discontinuation of two manual enzyme-linked immunoassay (EIA) tests, automated Chemiluminescent Microparticle Immunoassay (CMIA) technology was introduced as the primary alternative. This study compares serologic reactivity rates between manual EIA and automated CMIA methods.
View Article and Find Full Text PDFAppl Environ Microbiol
September 2025
Biofuels Institute, School of Emergency Management, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, Jiangsu, PR China.
is a thermophilic acetogenic bacterium capable of thriving at elevated temperatures up to 66°C. It metabolizes carbohydrates such as glucose, mannose, and fructose and can also grow lithotrophically utilizing hydrogen (H) and carbon dioxide (CO) or carbon monoxide (CO), with acetate serving as its main product. A simple and efficient genome editing system for would not only facilitate the understanding of the physiological function of enzymes involved in energy and carbon metabolism but also enable metabolic engineering.
View Article and Find Full Text PDFHuman sirtuin 2 (SIRT2) is an NAD dependant enzyme that has been linked to the pathogenesis of various diseases, making it a promising target for pharmaceutical intervention. This study presents a systematic investigation on the inhibitory effects of SIRT2 inhibitors functionalized with diverse electrophilic functional groups. Guided by initial docking studies, we designed and synthesised 14 derivatives of two published potent lead structures 24a and SirReal2.
View Article and Find Full Text PDFIntroduction Chronic Obstructive Pulmonary Disease (COPD) is increasingly recognized not only as a pulmonary condition but as a systemic disorder with significant cardiovascular implications. Acute exacerbations of COPD (AECOPD) further elevate this risk, potentially through a heightened prothrombotic state. This study aimed to evaluate and compare the levels of select prothrombotic biomarkers - fibrinogen, C-reactive protein (CRP), D-dimer, von Willebrand Factor (vWF), homocysteine, lactate dehydrogenase (LDH), and platelet-to-lymphocyte ratio (PLR) - in patients with stable COPD and AECOPD, and to assess their diagnostic and prognostic significance.
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