Pinostrobin demonstrated anticancer properties, but its hydrophobic feature led to a reduction in bioavailability. The mitochondria-targeted approach successfully synthesized eight new alkyl triphenylphosphonium pinostrobin derivatives (1-8) with good yield in this study. Seven compounds (1-3, 5-8) showed greater cytotoxic potency against the human MCF-7 breast cancer cell line than pinostrobin.
View Article and Find Full Text PDFThis study presents a phytochemical analysis of the leaves of , revealing the isolation of a new apotirucallane-type protolimonoid, identified as 25--methyl-1,2-dihydroprotoxylocarpin D (), along with two known compounds ( and ). The known compounds were identified as (20,21,23)-21,23-epoxy-7,24,25-trihydroxy-21--methyl-3-oxoapotirucalla-14-ene () and 7,24,25-trihydroxy-3-oxoapotirucalla-14-en-21,23-olide (). The three apotirucallane-type protolimonoids (-) did not exhibit cytotoxicity against MCF-7 cells at a concentration of 100 µM.
View Article and Find Full Text PDFBackground And Purpose: The utilization of doxorubicin (DOX) in clinal trials is also challenging owing to its adverse effects, including low oral bioavailability, generation of reactive oxygen species (ROS), cardiotoxicity, and epithelial barrier damage. Recently, scavenging of ROS reduced the cytotoxicity of DOX, suggesting a new approach for using DOX as an anticancer treatment. Thus, in this study, non-silica and silica redox nanoparticles (denoted as RNP and siRNP, respectively) with ROS scavenging features have been designed to encapsulate DOX and reduce its cytotoxicity.
View Article and Find Full Text PDFSepsis is characterized by an initial net hyperinflammatory response, followed by a period of immunosuppression, termed immunoparalysis. During this immunosuppressive phase, patients may have difficulty eradicating invading pathogens and are susceptible to life-threatening secondary hospital-acquired infections. Due to progress in antimicrobial treatment and supportive care, most patients survive early sepsis.
View Article and Find Full Text PDFMater Sci Eng C Mater Biol Appl
August 2021
In recent years, rapid progress in the field of single-entity electrochemistry (SEE) has opened a novel exploratory area in the field of analytical and electrochemistry. SEE is a method of studying the behavior of particles at the single particle level, which yields important information on the diffusion coefficient, individual particle size, size distribution, catalytic activity, collision frequency, and internal substances of the particles. Various types of particles have been studied through SEE.
View Article and Find Full Text PDFSevere sepsis and septic shock caused mainly by bacterial infections are life-threatening conditions that urge the development of novel therapies. However, host responses to and pathophysiology of sepsis have not been clearly understood, which remains a major obstacle for the development of effective therapeutics. Recently, we have shown that stimulation of a costimulatory molecule, CD137, enhanced survival of mice infected with the Gram-positive (G(+)) intracellular bacterium Listeria monocytogenes but decreased survival in a polymicrobial sepsis model.
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