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Self-driven micromotors loaded with photosensitive adhesives and their application in dentin sensitivity.
J Mater Chem B
January 2025
Oral Implant Centre, The Second Affiliated Hospital of Harbin Medical University, Harbin 150086, People's Republic of China.
Dentin hypersensitivity is primarily caused by the exposure of dentinal tubules due to various factors, so the key to treatment is to effectively seal these exposed tubules. However, traditional dentinal tubule sealants used in clinical practice often fail to adhere securely to the tubule surface when exposed to external stimuli, resulting in a recurrence of sensitivity. In this study, we developed a silicon micromotor that moved autonomously and loaded with silver nanoparticles and a photosensitive adhesive for dentin sensitivity therapy.
View Article and Find Full Text PDFSurface enzyme-polymerization endows Janus hydrogel tough adhesion and regenerative repair in penetrating orocutaneous fistulas.
Nat Commun
December 2024
Shanghai Key Laboratory of Anesthesiology and Brain Functional Modulation, Clinical Research Center for Anesthesiology and Perioperative Medicine, Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People's Hospital, School of Medicine, Tongji University, Shanghai, China.
Penetrating orocutaneous or oropharyngeal fistulas (POFs), severe complications following unsuccessful oral or oropharyngeal reconstruction, remain complex clinical challenges due to lack of supportive tissue, contamination with saliva and chewed food, and dynamic oral environment. Here, we present a Janus hydrogel adhesive (JHA) with asymmetric functions on opposite sides fabricated via a facile surface enzyme-initiated polymerization (SEIP) approach, which self-entraps surface water and blood within an in-situ formed hydrogel layer (RL) to effectively bridge biological tissues with a supporting hydrogel (SL), achieving superior wet-adhesion and seamless wound plugging. The tough SL hydrogel interlocked with RL dissipates energy to withstand external mechanical stimuli from continuous oral motions like chewing and swallowing, thus reducing stress-induced damage.
View Article and Find Full Text PDFA Constant Filgotinib Delivery Adhesive Platform Based on Polyethylene Glycol (PEG) Hydrogel for Accelerating Wound Healing via Restoring Macrophage Mitochondrial Homeostasis.
Small
December 2024
Shanghai Engineering Research Center of Tooth Restoration and Regeneration & Tongji Research Institute of Stomatology & Department of Prosthodontics, Shanghai Tongji Stomatological Hospital and Dental School, Tongji University, Shanghai, 200072, China.
Skin wound healing is often hindered by disrupted mitochondrial homeostasis and imbalanced macrophage glucose metabolism, posing a critical challenge to improve patient outcomes. Developing new wound healing dressings capable of effectively regulating macrophage immune-metabolic functions remains a pressing issue. Herein, a highly adhesive polyethylene glycol (PEG) hydrogel loaded with the Janus kinase 1 (JAK1) inhibitor Filgotinib (Fil@GEL) is prepared to modulate macrophage metabolic reprogramming and restore normal mitochondrial function.
View Article and Find Full Text PDFIt's 'claw'-some: Ontogenetic claw shape changes in mites (Acari, Oribatida) as a consequence of ecological shifts.
Arthropod Struct Dev
December 2024
Department of Biology, University of Graz, Universitaetsplatz 2, 8010, Graz, Austria.
Claw characteristics of oribatid mites are strongly correlated with environmental factors and these characters remain constant throughout development when immatures and adults share the same ecology and lifestyle. In the present study, claw traits of oribatid mite species with constant ecology were compared with those of species showing a clear ecological shift between juvenile and adult stage. The arboreal Sellnickia caudata and the saxicolous Niphocepheus nivalis dwell in the same microhabitat during their life-cycle, whereas immatures of the terrestrial Carabodes areolatus and Mycobates carli, as well as of the aquatic Hydrozetes lemnae, are, in contrast to their adults, endophagous, meaning they feed and burrow within lichen and plant tissue.
View Article and Find Full Text PDFHistologic Reaction Patterns of Lymph Node Involvement in Ovarian Serous Borderline Tumors.
Arch Pathol Lab Med
December 2024
the Department of Pathology, Seegene Medical Foundation, Seoul, Republic of Korea (K.-R. Kim).
Context.—: Lymph node (LN) involvement (LNI) is not infrequently observed in ovarian serous borderline tumors (SBTs) but is not considered equivalent to malignant tumor metastasis, as it reportedly does not impact recurrence or survival in patients with SBT. However, the reasons underlying the insignificant clinical impact of LNI remain unclear.
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