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Aim: Panitumumab is a monoclonal antibody directed against EGFR that is approved for the treatment of metastatic colorectal cancer. To investigate its pharmacokinetics and concentration-response relationship, a validated assay is required.
Results: An ELISA assay was developed and validated according to international recommendations. Six calibrators (ranging from 0.1 to 20 mg/l) plus one anchor point (50 mg/l) and three quality controls (0.45, 2 and 8 mg/l) were defined. The limit of detection, lower limit of quantification and upper limit of quantification were 0.033, 0.112 and 10 mg/l, respectively.
Conclusion: This method is validated and can be used to study pharmacokinetics of panitumumab or to perform therapeutic drug monitoring.
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http://dx.doi.org/10.4155/bio-2016-0292 | DOI Listing |
Background: At present, existing risk scores together with traditional biomarkers such as troponin and brain natriuretic peptide (BNP) are still unable to accurately predict cancer therapy-related cardiac dysfunction (CTRCD). MicroRNAs (miRNAs) have emerged as promising biomarkers for improved identification of high-risk patients; however, limited studies have been performed in patients with HER2-positive breast cancer.
Objectives: To investigate the predictive potential of six serum-derived circulating miRNAs for CTRCD occurrence in patients with early-stage HER2-positive breast cancer receiving trastuzumab (TTZ).
Front Nucl Med
August 2025
School of Health Sciences and Social Work, Griffith University, Brisbane/Gold Coast, QLD, Australia.
Background: Animal models of nerve compression have revealed neuroinflammation not only at the entrapment site, but also remotely at the spinal cord. However, there is limited information on the presence of neuroinflammation in human compression neuropathies. The objectives of this study were to: (1) assess which tracer kinetic model most optimally quantified [C]DPA713 uptake in the spinal cord and neuroforamina in patients with painful cervical radiculopathy, (2) evaluate the performance of linearized methods (e.
View Article and Find Full Text PDFFront Bioeng Biotechnol
August 2025
Institute of Process Engineering in Life Sciences, Section IV: Biomolecular Separation Engineering, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany.
Spectroscopic soft sensors are developed by combining spectral data with chemometric modeling, and offer as Process Analytical Technology (PAT) tools powerful insights into biopharmaceutical processing. In this study, soft sensors based on Raman spectroscopy and linear or partial least squares (PLS) regression were developed and successfully transferred to a filtration-based recovery step of precipitated virus-like particles (VLPs). For near real-time monitoring of product accumulation and precipitant depletion, the dual-stage cross-flow filtration (CFF) set-up was equipped with an on-line loop in the second membrane stage.
View Article and Find Full Text PDFACS Omega
September 2025
Research Laboratory in bionanomaterials, LPbio, Department of Chemistry, Federal University of Viçosa, 36570-900 Viçosa, Minas Gerais, Brazil.
Herein, it is reported the synthesis of a niobium-based metal-organic framework (MOF), [Nb-(Bez-(COO))] , for the extraction of caffeine from surface waters. The material was synthesized and characterized by Fourier-transform infrared spectroscopy (FTIR), Raman spectroscopy, scanning electron microscopy (SEM), X-ray diffraction (XRD), and Brunauer-Emmett-Teller (BET) analysis, which confirmed the coordination between the ligand (1,4-benzenodicarboxylic, (Bez-(COO))) and niobium (Nb) with a morphology composed of hexagonal rods, high crystallinity, and a surface area of 94.7 m g.
View Article and Find Full Text PDFOpen Med (Wars)
August 2025
Department of Burns and Wound Repair, Weifang People's Hospital, Shandong Second Medical University, Weifang, China.
Objective: Hypertrophic scars (HS) are a fibrotic proliferative disorder that results from an abnormal wound healing process, presenting significant challenges for clinical intervention. The primary characteristics of HS include excessive collagen deposition and angiogenesis. In recent years, the study of mesenchymal stem cells (MSCs) and their derived exosomes has emerged as a prominent area of research within the academic community.
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