A molecularly imprinted polymer-modified potentiometric histamine (HIS) sensor was prepared and used for quantitative determination of HIS in bovine serum. The calibration curve using the potential responses measured in 1 × 10 mol L phosphate buffer (pH 7.4) showed good linearity in the HIS concentration range of 3 × 10 to 1 × 10 mol L (r = 0.92), with a detection limit of 1.6 × 10 mol L. In bovine serum samples, the HIS sensor showed good recovery values of 91 - 104%. Therefore, this HIS sensor successfully determined the HIS concentration in bovine serum samples.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.2116/analsci.20N018 | DOI Listing |
J Agric Food Chem
December 2024
Department of Clinical Veterinary Medicine, College of Veterinary Medicine, China Agricultural University, Yuanmingyuan West Road, Beijing 100193, China.
In clinical mastitis of dairy cows, the abnormal accumulation of apoptotic cells (ACs) and subsequent secondary necrosis and inflammation pose significant concerns, with macrophage-mediated efferocytosis, crucial for ACs clearance, remaining unexplored in this context. In nonruminants, MER proto-oncogene tyrosine kinase (MERTK) receptors are essential for efferocytosis and A Disintegrin and Metalloproteinase 17 (ADAM17) is thought to play a role in regulating MERTK integrity. This study aimed to delineate the in situ role of efferocytosis in clinical mastitis, with a particular focus on the interaction between MERTK and ADAM17 in bovine macrophages.
View Article and Find Full Text PDFJ Nanobiotechnology
December 2024
State Key Laboratory of Organic-Inorganic Composites, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China.
Background: Electrospun nanofiber scaffolds have been widely used in tissue engineering because they can mimic extracellular matrix-like structures and offer advantages including high porosity, large specific surface area, and customizable structure. In this study, we prepared scaffolds composed of aligned and random electrospun polycaprolactone (PCL) nanofibers capable of delivering basic fibroblast growth factor (bFGF) in a sustained manner for repairing damaged tendons.
Results: Aligned and random PCL fiber scaffolds containing bFGF-loaded bovine serum albumin (BSA) nanoparticles (BSA-bFGF NPs, diameter 146 ± 32 nm) were fabricated, respectively.
Vet Sci
December 2024
Department of Animal Sciences and Center for Nutrition and Pregnancy, North Dakota State University, Fargo, ND 58108, USA.
Two experiments assessed the effects of providing a vitamin and mineral supplement to gestating beef heifers on concentrations of immunoglobulins (Ig) in colostrum and calf serum 24 h after feeding maternal colostrum (Exp. 1) or a colostrum-replacement product (Exp. 2).
View Article and Find Full Text PDFToxins (Basel)
November 2024
Immunoassays/Immunosensors Lab, Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, NCSR "Demokritos", 15341 Aghia Paraskevi, Greece.
Aflatoxin M1 (AFM1) exposure through dairy products is associated with adverse health effects, including hepatotoxicity and carcinogenicity. Therefore, the AFM1 presence in milk and dairy products is strictly regulated. In this context, the current work focuses on the investigation of different competitive enzyme immunoassay configurations for the determination of AFM1 in milk with high sensitivity and short assay duration.
View Article and Find Full Text PDFJ Funct Biomater
December 2024
Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, 142290 Moscow, Russia.
One of the key factors of the interaction 'osteoplastic material-organism' is the state of the implant surface. Taking into account the fact that the equilibrium in regeneration conditions is reached only after the reparative histogenesis process is completed, the implant surface is constantly modified. This work is devoted to the numerical description of the dynamic bilateral material-medium interaction under close to physiological conditions, as well as to the assessment of the comparability of the model with and experimental results.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!