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Homopregnane-type ferrocene-steroid conjugates exhibit immunomodulatory activity.
Bioorg Chem
January 2025
Department of Chemistry, Faculty of Sciences and Mathematics, University of Niš, Višegradska 33, 18000 Niš, Serbia. Electronic address:
Numerous compounds with useful biological activities were previously prepared by tethering ferrocene to natural product scaffolds. Some conjugates of ferrocene and steroids in particular were demonstrated to act as both potent and selective antiproliferative agents. Motivated by a lack of structural diversity in the pregnane series of conjugates, we performed chemical modifications of several naturally occurring progestogens, their biosynthetic precursors and chemically related derivatives so as to obtain conjugates 1-8, in which the steroid skeleton and ferrocene core are linked by the steroid sidechain.
View Article and Find Full Text PDFStretchable, Self-Healable, and Durable Conductive Elastomer Derived from a Rationally Designed Covalently Cross-Linked Network.
ACS Appl Mater Interfaces
January 2025
School of Medicine, Huanghe Science and Technology University, Zhengzhou 450061, P. R. China.
Silver nanowire (Ag NW)-based elastic conductors have been considered a promising candidate for key stretchable electrodes in wearable devices. However, the weak interface interaction of Ag NWs and elastic substrates leads to poor durability of electronic devices. For everyday usage, an additional self-healing ability is required to resist scratching and damage.
View Article and Find Full Text PDFHigh-Density Polyethylene Janus Fibrous Membrane with Enhanced Breathability and Moisture Permeability via PDA Assisted Hydrophilic Modification.
Macromol Rapid Commun
January 2025
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China.
Functional fibrous membranes with high mechanical properties are intensively developed for different application fields. In this study, to enhance moisture and air permeability without compromising mechanical strength, a facile float-surface modification strategy is employed to fabricate Janus fibrous membranes with distinct hydrophobicity/hydrophilicity using the high-density polyethylene (HDPE) fibrous membranes. By coating one side of the HDPE fibrous membranes with polydopamine (PDA) and a superhydrophilic polyelectrolyte, the obtained Janus HDPE fibrous membranes demonstrate an excellent water transmission rate (577.
View Article and Find Full Text PDFNd: YAP Laser in the Elimination of Endodontic Nickel-Titanium Files Fractured in Rooted Canals (Part 1: Teeth With Minimal Root Curvature).
Cureus
December 2024
Department of Dental Sciences, Faculty of Medicine, University of Liege, Liege, BEL.
Background Fracture of nickel-titanium (Ni-Ti) instruments in root canals is commonly associated with compromised outcomes in endodontic treatment. There is no single, universally accepted approach for managing this complication. The objective of this study is to evaluate the effectiveness of an Nd: YAP laser-assisted protocol in removing fractured Ni-Ti files in teeth with minimal root curvature (less than 15 degrees).
View Article and Find Full Text PDFThe future of cell-free synthetic biology.
Biotechnol Notes
November 2024
Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
Cell-free synthetic biology aims at the targeted replication, design, and modification of life processes in open systems by breaking free of constraints such as cell membrane barriers and living cell growth. The beginnings of this systematized technology, which took place in the last century, were used to explore the secrets of life. Currently, with its easy integration with other technologies or disciplines, cell-free synthetic biology is developing into a powerful and effective means of understanding, exploiting, and extending the structure and function of natural living systems.
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