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FRESH extrusion 3D printing of type-1 collagen hydrogels photocrosslinked using ruthenium.
PLoS One
January 2025
The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, Maryland, United States of America.
The extrusion bioprinting of collagen material has many applications relevant to tissue engineering and regenerative medicine. Freeform Reversible Embedding of Suspended Hydrogels (FRESH) technology is capable of 3D printing collagen material with the specifications and details needed for precise tissue guidance, a crucial requirement for effective tissue repair. While FRESH has shown repeated success and reliability for extrusion printing, the mechanical properties of completed collagen prints can be improved further by post-print crosslinking methodologies.
View Article and Find Full Text PDFBagging an Extremity for Negative-Pressure Wound Therapy: A Case Report.
Adv Skin Wound Care
January 2025
Krešimir Bulić, MD, PhD, is Professor, Department of Plastic, Reconstructive and Aesthetic Surgery, University Hospital Center Zagreb, Croatia, and Department of Surgery, University of Zagreb School of Medicine. Lucija Gatin, MD, is Resident, Department of Plastic, Reconstructive and Aesthetic Surgery, University Hospital Center Zagreb.
Negative-pressure wound therapy (NPWT) is used to promote wound closure or to prepare a wound for definite coverage. However, the anatomy of the hand makes it difficult to apply dressings that require an airtight seal. In this report, the authors describe the case of a patient with an extensive defect of his right hand and forearm who was treated with a free fibula osteocutaneous flap transfer.
View Article and Find Full Text PDFMicrobe-mediated synthesis of defect-rich CeO nanoparticles with oxidase-like activity for colorimetric detection of L-penicillamine and glutathione.
Nanoscale
January 2025
College of Biotechnology and Pharmaceutical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 211816, P.R. China.
To enhance production efficiency, curtail costs, and minimize environmental impact, developing simple and sustainable nanozyme synthesis methods has been the focus of relevant research. In this report, graphite-coated CeO nanoparticles (CeO NPs) with multiple defects (Ce defects, oxygen vacancies and carbon defects) were synthesized the culture filtrate of the extremely radioresistant bacterium R12 ( R12). The as-prepared CeO NPs exhibit remarkable oxidase (OXD)-like activity, efficiently catalyzing the oxidation of the chromogenic substrate 3,3',5,5'-tetramethylbenzidine (TMB) to form oxTMB, even in the absence of HO.
View Article and Find Full Text PDFUsing a Mobile Health App (ColonClean) to Enhance the Effectiveness of Bowel Preparation: Development and Usability Study.
JMIR Hum Factors
January 2025
School of Nursing, National Taipei University of Nursing and Health Sciences, Room B631, No. 365, Ming-te Road, Peitou District, Taipei City, 11219, Taiwan, 886 2 28227101 ext 3186.
Background: Colonoscopy is the standard diagnostic method for colorectal cancer. Patients usually receive written and verbal instructions for bowel preparation (BP) before the procedure. Failure to understand the importance of BP can lead to inadequate BP in 25%-30% of patients.
View Article and Find Full Text PDFGrowth of MoS Nanosheets on Brush-Shaped PI-ZnO Hybrid Nanofibers and Study of the Photocatalytic Performance.
Nanomaterials (Basel)
December 2024
College of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China.
The design and preparation of advanced hybrid nanofibers with controllable microstructures will be interesting because of their potential high-efficiency applications in the environmental and energy domains. In this paper, a simple and efficient strategy was developed for preparing hybrid nanofibers of zinc oxide-molybdenum disulfide (ZnO-MoS) grown on polyimide (PI) nanofibers by combining electrospinning, a high-pressure hydrothermal process, and in situ growth. Unlike simple composite nanoparticles, the structure is shown in PI-ZnO to be like the skeleton of a tree for the growth of MoS "leaves" as macro-materials with controlled microstructures.
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