Objective: We have previously demonstrated that LIPUS stimulates endochondral ossification with decreased expression of sclerostin. The Wnt signaling pathway was examined in vitro to further address the effect of LIPUS on endochondral ossification.
Materials And Methods: ATDC5 cells were plated at an initial density of 6 × 10 cells/well in a 6-multiwell plate and cultured in the presence of 5% FBS plus ITS. The bottom of the culture plate was treated every day with LIPUS for 20 minutes. The level of calcification and the expression of Wnt signaling were investigated.
Results: The area of calcified nodules in the LIPUS-treated group was significantly greater than in the control group. The expression of Wnt was significantly elevated by LIPUS exposure. Markers associated with endochondral ossification were increased in the LIPUS-treated group. When sclerostin was added to the culture media, calcified nodule formation and the expression of Wnt were inhibited in both the LIPUS-treated group and the control group.
Discussion: This study suggests that endochondral ossification was stimulated by LIPUS via the Wnt signaling pathway.
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http://dx.doi.org/10.1097/01.bot.0000520898.92470.94 | DOI Listing |
Adv Healthc Mater
January 2025
State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, China.
Immune-mediated bone regeneration driven by bone biomaterials offers a therapeutic strategy for repairing bone defects. Among 2D nanomaterials, TiCT MXenes have garnered substantial attention for their potential in tissue regeneration. This investigation concentrates on the role of MXene nanocomposites in modulating the immune microenvironment within bone defects to facilitate bone tissue restoration.
View Article and Find Full Text PDFFolia Morphol (Warsz)
January 2025
Department of Histology and Developmental Biology, Tokyo Dental College, Tokyo, Japan.
Background: Some mammals including the swine carry a fibrous vestigial clavicle, but a subclavius muscle (SBM) extends between the first rib and the supraspinatus muscle surface fascia. We aimed to examine development of the SBM and clavicle for finding a specific factor to provide the curious morphology.
Materials And Methods: Histological sections of early- and midterm fetuses of the swine, human and mouse were observed and compared at the almost same morphological stage.
J Biomed Mater Res A
January 2025
Faculty of Materials Science and Engineering, Warsaw University of Technology, Warsaw, Poland.
Bone tissue regeneration can be affected by various architectonical features of 3D porous scaffold, for example, pore size and shape, strut size, curvature, or porosity. However, the design of additively manufactured structures studied so far was based on uniform geometrical figures and unit cell structures, which often do not resemble the natural architecture of cancellous bone. Therefore, the aim of this study was to investigate the effect of architectonical features of additively manufactured (aka 3D printed) titanium scaffolds designed based on microtomographic scans of fragments of human femurs of individuals of different ages on in vitro response of human bone-derived mesenchymal stem cells (hMSC).
View Article and Find Full Text PDFInterv Cardiol
November 2024
Department of Cardiology, Heart, Vascular and Thoracic Institute, Cleveland Clinic Abu Dhabi Abu Dhabi, United Arab Emirates.
With the emergence of less invasive transcatheter valvular therapies, there remains a limited understanding of the feasibility and durability of these approaches in patients with osteogenesis imperfecta and whether they can offer a suitable alternative to conventional surgery. In this context, and with a focus on mitral repair, we report on a case of mitral transcatheter edge-to-edge repair in a patient with osteogenesis imperfecta and conduct a comprehensive review of the characteristics and outcomes of reported osteogenesis imperfecta cases undergoing surgical or transcatheter mitral repair. Given the high burden of complications of surgery in this population, transcatheter mitral repair could potentially serve as a suitable alternative to conventional surgery in this challenging population.
View Article and Find Full Text PDFBones develop to structurally balance strength and mobility. Bone developmental dynamics are influenced by whether an animal is ambulatory at birth ( precocial). Precocial species, such as goats, develop advanced skeletal maturity in utero, making them useful models for studying the dynamics of bone formation under mechanical load.
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