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Sulfonamide-Pyrazole derivatives as next-generation Cyclooxygenase-2 enzyme inhibitors: From molecular design to in vivo efficacy.
Int J Biol Macromol
December 2024
Applied Organic Chemistry Department, National Research Center, Dokki, Cairo 12622, Egypt; Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Pharos University in Alexandria, Canal El Mahmoudia St., Alexandria 21648, Egypt. Electronic address:
The current research focuses on the design and synthesis of celecoxib analogues incorporating sulphonamide pyrazole moieties 4, 5, 6a-e, and 7a-f with the aim of achieving a broad range of COX-2 selectivity in vitro. Among these, compounds 6b-d, 7a, 7e, and 7d exhibited potent inhibition, with IC values ranging between 0.05 and 0.
View Article and Find Full Text PDFEfficient radiolabeling of mesoporous silica nanoparticles for single-cell PET imaging.
Eur J Nucl Med Mol Imaging
December 2024
Department of Radiation Oncology, Stanford University, Stanford, CA, USA.
Purpose: Nanoparticles are highly efficient vectors for ferrying contrast agents across cell membranes, enabling ultra-sensitive in vivo tracking of single cells with positron emission tomography (PET). However, this approach must be fully characterized and understood before it can be reliably implemented for routine applications.
Methods: We developed a Langmuir adsorption model that accurately describes the process of labeling mesoporous silica nanoparticles (MSNP) with Ga.
Characterizing Variability in Non-Invasive Hydration Monitoring Using Raman Spectroscopy.
Appl Spectrosc
December 2024
Vanderbilt Biophotonics Center, Vanderbilt University, Nashville, Tennessee, USA.
Significant dehydration can increase thermoregulatory and cardiovascular strain and impair physical and cognitive performance. Despite these negative effects, there are currently no objective, non-invasive tools to monitor systemic hydration. Raman spectroscopy is an optical modality with the potential to fill this gap because it is sensitive to water, provides results quickly, and can be applied non-invasively.
View Article and Find Full Text PDFDoes Cement Viscosity Impact Antibiotic Elution and In Vitro Efficacy Against Common Prosthetic Joint Infection Pathogens?
Clin Orthop Relat Res
October 2024
Rush Copley Medical Center, Aurora, IL, USA.
Background: Polymethylmethacrylate (PMMA) antibiotic-laden bone cement (ALBC) is commonly used in total joint arthroplasty to treat and potentially prevent prosthetic joint infection (PJI). Multiple properties impact the elution characteristics of antibiotics from PMMA-based ALBC, including viscosity. What is not known is how medium-viscosity cement formulations affect antibiotic elution and how different cement products from different manufacturers compare regarding reaching the minimum inhibitory concentration (MIC) of antibiotics for common PJI-causing organisms in an in vitro setting.
View Article and Find Full Text PDFClinical confocal laser endomicroscopy for imaging of autofluorescence signals of human brain tumors and non-tumor brain.
J Cancer Res Clin Oncol
December 2024
Department of Neurosurgery, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.
Purpose: Analysis of autofluorescence holds promise for brain tumor delineation and diagnosis. Therefore, we investigated the potential of a commercial confocal laser scanning endomicroscopy (CLE) system for clinical imaging of brain tumors.
Methods: A clinical CLE system with fiber probe and 488 nm laser excitation was used to acquire images of tissue autofluorescence.
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