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Osteochondral Tissue Engineering: Scaffold Materials, Fabrication Techniques and Applications.
Biotechnol J
January 2025
Cancer Hospital of Dalian University of Technology, Dalian R&D Center for Stem Cell and Tissue Engineering, Dalian University of Technology, Dalian, China.
Osteochondral damage, caused by trauma, tumors, or degenerative diseases, presents a major challenge due to the limited self-repair capacity of the tissue. Traditional treatments often result in significant trauma and unpredictable outcomes. Recent advances in bone/cartilage tissue engineering, particularly in scaffold materials and fabrication technologies, offer promising solutions for osteochondral regeneration.
View Article and Find Full Text PDFMetal-Assisted Synthesis of Diverse Porphyrinoids by Cyclization of an N-Confused Thia-Pentapyrrane.
Chem Asian J
January 2025
East China University of Science and Technology, Institute of Fine Chemicals, Meilong Road, 200237, Shanghai, CHINA.
Oxidation of thia-pentapyrrane S-P4 with terminal β-linked pyrrole and thiophene units in the presence of various metal ions has been found to afford distinct porphyrinoids. Specifically, N-confused thiasapphyrin (1), Cu(III) norrole (2), neo-confused phlorin (3), and p-benzinorrole (4) were obtained, when S-P4 was oxidized with p-chloranil in acetonitrile in the presence of Ni2+, Cu2+, Cd2+, and Co2+, respectively. The structures of 1-4 have been clearly elucidated by NMR spectroscopy, HRMS, and X-ray crystal diffraction (for 2-4).
View Article and Find Full Text PDFChemical associations of selenium oxyanions in metal oxides derived from layered double hydroxides: Implication for the immobilization of radionuclides.
Environ Res
January 2025
School of Creative Science and Engineering, Faculty of Science and Engineering, Waseda University, Tokyo 169-8050, Japan; Department of Earth Resources Engineering, Faculty of Engineering, Kyushu University, Fukuoka 819-0395, Japan. Electronic address:
Layered double hydroxides (LDHs) can effectively stabilize Se oxyanions, yet the thermal stability of Se oxyanions incorporated into LDHs remains unclear. In this study, calcination products of three types of LDHs loaded with SeO2- 3 or SeO2-4 were analyzed using X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), X-ray absorption fine structure spectroscopy (XAFS) and leaching tests. It has been found that SeO2-4 can be reduced to SeO2- 3 in the Fe-containing LDHs after calcination at temperatures above 450 °C.
View Article and Find Full Text PDFA collagen-based laboratory model to mimic sex-specific features of calcific aortic valve disease.
Acta Biomater
January 2025
Department of Mining and Materials Engineering, McGill University, 3610 Rue University, Montreal, QC H3A 0C5, Canada. Electronic address:
Calcific aortic valve disease (CAVD) shows in the deposition of calcium phosphates in the collagen-rich layer of the valve leaflets. This stiffens the leaflets and eventually leads to heart failure. Recent research suggests that CAVD follows sex-specific pathways: at the same severity of the disease, women tend to have fewer and less crystalline calcifications, and the phases of their calcifications are decidedly different than those of men; namely, dicalcium phosphate dihydrate (DCPD) - one of the mineral phases in CAVD - occurs almost exclusively in females.
View Article and Find Full Text PDFFDuDoCLNet: Fully dual-domain contrastive learning network for parallel MRI reconstruction.
Magn Reson Imaging
January 2025
School of Information Science and Engineering, Henan University of Technology, Zhengzhou 450001, China.
Magnetic resonance imaging (MRI) is a non-invasive medical imaging technique that is widely used for high-resolution imaging of soft tissues and organs. However, the slow speed of MRI imaging, especially in high-resolution or dynamic scans, makes MRI reconstruction an important research topic. Currently, MRI reconstruction methods based on deep learning (DL) have garnered significant attention, and they improve the reconstruction quality by learning complex image features.
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