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Electrochemical aptasensor for the selective detection of vancomycin based on nanostructured "in-lab" printed electrodes.
Mikrochim Acta
January 2025
Department of Analytical Chemistry, Faculty of Pharmacy, "Iuliu Hațieganu" University of Medicine and Pharmacy, 4 Pasteur Street, 400349, Cluj-Napoca, Romania.
A label-free, flexible, and disposable aptasensor was designed for the rapid on-site detection of vancomycin (VAN) levels. The electrochemical sensor was based on lab-printed carbon electrodes (C-PE) enriched with cauliflower-shaped gold nanostructures (AuNSs), on which VAN-specific aptamers were immobilized as biorecognition elements and short-chain thiols as blocking agents. The AuNSs, characterized by scanning electron microscopy (SEM) and atomic force microscopy (AFM), enhanced the electrochemical properties of the platform and the aptamer immobilization active sites.
View Article and Find Full Text PDFPhytochemical Composition and Antioxidant Activity of Manuka Honey and Ohia Lehua Honey.
Nutrients
January 2025
Orthodontics, Department of Conservative Odontology, Faculty of Dental Medicine, "Iuliu Hațieganu" University of Medicine and Pharmacy, 400012 Cluj-Napoca, Romania.
Unlabelled: Honey is abundant in bioactive compounds, which demonstrate considerable therapeutic effects, particularly on oxidative stress and inflammation.
Objectives: This work sought to evaluate the antioxidant mechanisms of Manuka honey (MH) and Ohia Lehua honey (OLH), correlating them with phytochemical analyses in a rat model of experimentally induced inflammation.
Methods: The identification of polyphenolic compounds in the extracts was carried out using HPLC-ESI MS.
Is Efficient Against Sepsis? A Comparative Study of Amifostine Versus Pomegranate.
Life (Basel)
January 2025
Department of Microbiology, Faculty of Medicine, Recep Tayyip Erdogan University, 53020 Rize, Turkey.
Sepsis is a clinical condition causing tissue damage as a result of infection and an exaggerated immune response. Sepsis causes 11 million deaths annually, a third of which are associated with acute lung injury (ALI). Rapid and effective treatment is crucial to improve survival rates.
View Article and Find Full Text PDFNrf2 Regulates Basal Glutathione Production in Astrocytes.
Int J Mol Sci
January 2025
Program in Neuroscience, Department of Biology, Syracuse University, Syracuse, NY 13210, USA.
Astrocytes produce and export glutathione (GSH), an important thiol antioxidant essential for protecting neural cells from oxidative stress and maintaining optimal brain health. While it has been established that oxidative stress increases GSH production in astrocytes, with Nrf2 acting as a critical transcription factor regulating key components of the GSH synthetic pathway, the role of Nrf2 in controlling constitutive GSH synthetic and release mechanisms remains incompletely investigated. Our data show that naïve primary mouse astrocytes cultured from the cerebral cortices of Nrf2 knockout (Nrf2) pups have significantly less intracellular and extracellular GSH levels when compared to astrocytes cultured from Nrf2 wild-type (Nrf2) pups.
View Article and Find Full Text PDFAdvanced Large-Stokes-Shift Fluorescent Probe for the Detection of Biothiols: Facilitating Accurate Indirect Measurement of β-Lactamases.
Int J Mol Sci
January 2025
College of Pharmacy, Qiqihar Medical University, Qiqihar 161006, China.
A novel fluorescent probe, Bibc-DNBS, based on the combination of the PET (photoinduced electron transfer) and ESIPT (excited-state intramolecular proton transfer) mechanisms, was designed and synthesized. Bibc-DNBS exhibited a Stokes shift of 172 nm in the fluorescence detection field. In addition, the probe exhibited good performance in key parameters in bioassays such as sensitivity, specificity, and response time.
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