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Impact of pre-crosslinks on the self-transformation performance of thermoplastic polyesters into vitrimers intermolecular transesterification.
RSC Adv
January 2025
Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology Gokiso-cho, Showa-ku Nagoya Aichi Japan 466-8555
We recently proposed a concept of self-transformation from thermoplastic polyesters into vitrimers intermolecular bond exchange as the cross-linking reaction. Key was the use of polyesters bearing hydroxyl side groups, which were cross-linked without additional cross-linkers through intermolecular transesterification in the presence of a suitable catalyst. In our previous study, a linear polyester was synthesized as the starting polymer by reacting dithiol monomers containing ester bonds (2-SH) with diepoxy monomers (2-epoxy) a thiol-epoxy reaction, generating hydroxyl side groups along the polyester chain.
View Article and Find Full Text PDFEfficacy of natural NF-κB inhibitors in the treatment of fibrosarcoma: an in vitro model study.
Front Cell Dev Biol
December 2024
Department of Molecular and Cellular Biology, Faculty of Pharmacy, Wroclaw Medical University, Wroclaw, Poland.
Introduction: NF-κB plays a pivotal role in the progression of cancers, including myosarcomas such as fibrosarcoma. Plants possess considerable potential for the provision of chemotherapeutic effects against cancer. The present study assessed, among others, the cytotoxicity, migration capacity and DNA damage induced by several natural compounds (berberine, curcumin, biochanin A, cucurbitacin E (CurE) and phenethyl caffeic acid (CAPE)) in cancer cells (WEHI-164) and normal muscle cells (L6).
View Article and Find Full Text PDFPreeclampsia (PE) is a prevalent and severe pregnancy complication that significantly impacts maternal and perinatal health. Epidemiological studies and animal experiments have demonstrated that PE adversely affects the cardiovascular and nervous systems of offspring, increasing their risk of hypertension and renal pathology. However, the mechanisms underlying this increased risk remain unclear.
View Article and Find Full Text PDFCatalytic Conversion of Carbon Dioxide to Long Chain Esters via Formate Hydroesterification.
Chemistry
January 2025
University of Missouri, Chemistry, 601 S. College Ave, 65211, Columbia, UNITED STATES OF AMERICA.
CO2-based hydroesterification is an attractive route to produce value added ester compounds, which could replace CO-based hydroesterification processes if sufficient catalytic technologies are developed. One path to CO2-based hydroesterification is through an organoformate intermediate, which is then used in olefin hydroesterification to generate the desirable esters. This route creates a net CO2-based hydroesterification process using tandem catalytic systems for CO2 hydrogenation to organoformate paired with formate-olefin hydroesterification.
View Article and Find Full Text PDFAssociations of phthalate and phthalate alternative metabolites in urine with the risk of gallstones in adults: a cross-sectional analysis.
Environ Geochem Health
January 2025
Institute of Epidemiology and Health Statistics, School of Public Health, Lanzhou University, Lanzhou, 730000, Gansu, China.
It remains unclear whether phthalates are associated with gallstones and whether the associations of phthalate alternatives with gallstones are different from traditional phthalates. In this study, 1735 participants from the NHANES 2017-2018 were included and their urine was used to detect phthalate metabolites. We used logistic and restricted cubic spline regressions to assess individual associations and dose-response relationships between phthalate metabolites and gallstones, quantile g-computation and Bayesian kernel machine regression to assess mixed associations of phthalate metabolites with gallstones, and subgroup analyses to explore potential effect modifiers.
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