Porous bioglass (BG) scaffolds are of great importance in tissue engineering because of their excellent osteogenic properties for bone regeneration. Herein, we reported for the first time the use of amino-modified bacterial cellulose (NBC) as a template to prepare a three-dimensional (3D) nanofibrous BG scaffold by a facile modified sol-gel approach under ultrasonic treatment. The results suggested that the amino groups on the BC template could effectively promote the absorption of the deposited CaO and SiO precursors, and the as-obtained BG scaffold showed a 3D interconnected porous network structure consisting of nanofibers with a diameter of about 20 nm. Furthermore, the as-obtained BG scaffold showed very good bioactivity after being immersed in SBF for 7 days. This research provides a facile and efficient way to prepare a nanofibrous BG scaffold with 3D porous structure, which can be used as a promising candidate for biomedical applications.
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http://dx.doi.org/10.1039/c8ra00352a | DOI Listing |
Glycobiology
December 2024
Institute of Biochemistry, Department of Chemistry, University of Natural Resources and Life Sciences, Muthgasse 18, Vienna 1190, Austria.
Tannerella serpentiformis is a health-associated Gram-negative oral anaerobe, while its closest phylogenetic relative is the periodontal pathogen Tannerella forsythia. The pathogen employs glycan mimicry through protein O-glycosylation, displaying a terminal nonulosonic acid aiding in evasion of host immune recognition. Like T.
View Article and Find Full Text PDFInt J Biol Macromol
October 2024
College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China. Electronic address:
Although cinnamaldehyde (CA) is an excellent antimicrobial agent, its application in the food industry was limited by its volatility and lack of antimicrobial persistence. Herein, aminated hollow mesoporous silica (NH-HMSN) was prepared by selective etching and amino-modified. Subsequently, long-acting antibacterials with regulated release (NH-HMSN@CA) were obtained by using NH-HMSN as cinnamaldehyde carrier.
View Article and Find Full Text PDFSci Total Environ
November 2024
The Key Laboratory for Silviculture and Conservation of Ministry of Education, College of Forestry, Beijing Forestry University, Beijing 100083, China.
The interaction and combination of nanoplastics with microorganisms, enzymes, plant proteins, and other substances have garnered considerable attention in current research. This study specifically examined the interaction and biological effects of NPs and proteins. The findings indicated that the presence of externally wrapped proteins alters the original morphology and surface roughness of nanoplastics, leading to the formation of unevenly distributed coronas on the surface.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
July 2024
Department of Chemistry, University of California, One Shields Avenue, Davis, California, 95616, United States.
Sialosides containing C8-modified sialic acids are challenging synthetic targets but potentially useful probes for diagnostic substrate profiling of sialidases and elucidating the binding specificity of sialic acid-interacting proteins. Here, we demonstrate efficient chemoenzymatic methods for synthesizing para-nitrophenol-tagged α2-3- and α2-6-linked sialyl galactosides containing C8-acetamido, C8-azido, or C8-amino derivatized N-acetylneuraminic acid (Neu5Ac). High-throughput substrate specificity studies showed that the C8-modification of sialic acid significantly changes its recognition by sialidases from humans, various bacteria, and different influenza A and B viruses.
View Article and Find Full Text PDFJ Environ Manage
April 2024
College of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China. Electronic address:
The removal of tetracycline from the sewage plant effluents through advanced treatment methods is key to controlling tetracycline levels in the water environment. In this study, modified quartz sands (QS) were used in a biological sand filter to remove tetracycline. The modified QS, with different surface characteristics, were prepared using glass etching technology combined with subsequent chemical modification methods, including hydroxylation treatment, metal ion modification, and amino modification.
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