Background And Objectives: Currently, plasma fractionation involves multiple processing steps using established methods such as ethanol precipitation and column chromatography. The known limitations associated with conventional purification techniques, combined with strict regulations on safety and high demand for particular plasma proteins, have resulted in a shortage of plasma-derived therapeutics such as intravenous immunoglobulin G (IgG).
Materials And Methods: In this study, IgG was purified from human plasma using Gradiflow technology, an electrophoresis-based separation technology.
Results: IgG was isolated from plasma to high purity, with 94 +/- 5% recovery in a short processing time.
Conclusions: The technology has been shown to be linearly scalable and has the capacity to contribute to increased production of important plasma fraction therapeutics.
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http://dx.doi.org/10.1046/j.1423-0410.2002.00241.x | DOI Listing |
J Clin Lipidol
December 2024
Department of Clinical Biochemistry, Copenhagen University Hospital - Rigshospitalet, Centre of Diagnostic Investigation, Copenhagen, Denmark; Faculty of Health and Medical Sciences, Department of Clinical Medicine, University of Copenhagen, Denmark. Electronic address:
Objective: Beyond glucose-lowering, sodium-glucose co-transporter 2 (SGLT2) inhibitors have cardioprotective effects with unclear mechanisms. We examined changes in an extensive panel of plasma lipids, lipoproteins, and apolipoproteins and whether these changes were independent of weight loss, hemoglobin A1c, and hematocrit in patients treated with empagliflozin versus placebo to better understand the observed cardioprotective effects.
Methods: Post-hoc analyses of two double-blind, placebo-controlled trials, the Empire HF trial including 190 patients with heart failure and reduced ejection fraction and the SIMPLE trial including 90 patients with type 2 diabetes randomized to, respectively, 10 mg and 25 mg empagliflozin daily or placebo for 12 weeks.
Genome Res
January 2025
Center for Novostics, Hong Kong Science Park, Pak Shek Kok, New Territories, Hong Kong SAR, China;
The discovery of circulating fetal and tumor cell-free DNA (cfDNA) molecules in plasma has opened up tremendous opportunities in noninvasive diagnostics such as the detection of fetal chromosomal aneuploidies and cancers and in posttransplantation monitoring. The advent of high-throughput sequencing technologies makes it possible to scrutinize the characteristics of cfDNA molecules, opening up the fields of cfDNA genetics, epigenetics, transcriptomics, and fragmentomics, providing a plethora of biomarkers. Machine learning (ML) and/or artificial intelligence (AI) technologies that are known for their ability to integrate high-dimensional features have recently been applied to the field of liquid biopsy.
View Article and Find Full Text PDFBr J Clin Pharmacol
January 2025
Department of Medical Microbiology, Haaglanden Medisch Centrum, The Hague, The Netherlands.
Aims: The beta-lactam antibiotic temocillin is increasingly used to treat extended-spectrum beta-lactamase (ESBL-producing) strains; however, its protein binding is complex. This study aims to predict unbound temocillin concentrations in various participant groups to determine its impact on the probability of target attainment (PTA) and to improve dosing recommendations.
Methods: The plasma pharmacokinetics were analysed using non-linear mixed-effects modelling.
Circulation
January 2025
Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN (Y.N.V.R., A.T., M.M.R., B.A.B.).
Background: Plasma NT-proBNP (N-terminal pro-B-type natriuretic peptide) is commonly used to diagnose heart failure with preserved ejection fraction (HFpEF), but its diagnostic performance in the ambulatory/outpatient setting is unknown because previous studies lacked objective reference standards.
Methods: Among patients with chronic dyspnea, diagnosis of HFpEF or noncardiac dyspnea was determined conclusively by exercise catheterization in a derivation cohort (n=414), multicenter validation cohort 1 (n=560), validation cohort 2 (n=207), and a nonobese Japanese validation cohort 3 (n=77). Optimal NT-proBNP cut points for HFpEF rule out (optimizing sensitivity) and rule in (optimizing specificity) were derived and tested, stratified by obesity and atrial fibrillation.
J Nutr Metab
January 2025
Graduate Program in Medical Sciences, Fluminense Federal University (UFF), Niterói, Rio de Janeiro, Brazil.
Tocotrienols, isomers of vitamin E, may provide an effective nutritional strategy to mitigate common cardiovascular risks such as dyslipidemia, inflammation, and oxidative stress in patients with chronic kidney disease (CKD). This double-blind, placebo-controlled, randomized clinical trial aimed to evaluate the effects of a tocotrienol-rich fraction (TRF) supplementation (300 mg/day) on oxidative stress and inflammatory markers, including transcription factors in nondialysis (ND) and hemodialysis (HD) CKD patients for three months. Interleukin-6, tumor necrosis factor- (IL-6 and TNF-), C-reactive protein (CRP), lipid peroxidation, biochemical parameters, and transcription factors such as NRF2 and NF-B mRNA expression were evaluated.
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