Acemannan increased bone surface, bone volume, and bone density in a calvarial defect model in skeletally-mature rats.

J Dent Sci

Research Unit of Herbal Medicine, Biomaterial and Material for Dental Treatment, Department of Anatomy, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand.

Published: December 2018


Category Ranking

98%

Total Visits

921

Avg Visit Duration

2 minutes

Citations

20

Article Abstract

Background/purpose: Acemannan, a β-(1-4)-acetylated polymannose extracted from gel, has been proposed as biomaterial for bone regeneration. The aim of this study was to investigate the effect of acemannan in calvarial defect healing.

Materials And Methods: Acemannan was processed to freeze-dried sponge form and disinfected by UV irradiation. Thirty-five female Sprague-Dawley rats were used in the study. Seven-mm diameter mid-calvarial defects were created and randomly allocated into blood clot control (C), acemannan 1 mg (A1), 2 mg (A2), 4 mg (A4), and 8 mg (A8) groups (n = 7). After four weeks, the calvarial specimens were subjected to microcomputed tomography (microCT) and histopathological analysis.

Results: MicroCT revealed a significant increase in bone surface and bone volume in the A1 and A2 groups, and tissue mineral density in the A4 and A8 groups compared with the control group ( < 0.05). Histologically, the acemannan-treated groups had denser bone matrix compared with the control group.

Conclusion: Acemannan is an effective bioactive agent for bone regeneration, enhancing bone growth as assayed in two- and three-dimensions.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6388811PMC
http://dx.doi.org/10.1016/j.jds.2018.06.004DOI Listing

Publication Analysis

Top Keywords

bone surface
8
surface bone
8
bone volume
8
calvarial defect
8
bone
6
acemannan
5
acemannan increased
4
increased bone
4
volume bone
4
bone density
4

Similar Publications

Background: Charcot foot is a debilitating complication of peripheral neuropathy and is primarily associated with diabetes, leading to structural damage, ulceration, and osteomyelitis. Pulsed electromagnetic field (PEMF) therapy is a promising treatment modality for wound healing and bone metabolism.

Objective: To evaluate the efficacy of PEMF therapy in promoting bone growth and ulcer healing in patients with Charcot foot ulcers.

View Article and Find Full Text PDF

Monocyte-derived macrophages (mo-macs) often drive immunosuppression in the tumour microenvironment (TME) and tumour-enhanced myelopoiesis in the bone marrow fuels these populations. Here we performed paired transcriptome and chromatin accessibility analysis over the continuum of myeloid progenitors, circulating monocytes and tumour-infiltrating mo-macs in mice and in patients with lung cancer to identify myeloid progenitor programs that fuel pro-tumorigenic mo-macs. We show that lung tumours prime accessibility for Nfe2l2 (NRF2) in bone marrow myeloid progenitors as a cytoprotective response to oxidative stress, enhancing myelopoiesis while dampening interferon response and promoting immunosuppression.

View Article and Find Full Text PDF

Statement Of Problem: Although custom temporomandibular joint (TMJ) prostheses manufactured via computer-aided design and manufacturing (CAD-CAM) and produced through 3-dimensional (3D) printing or computer numerical control (CNC) allow for sagittal curvature adjustments in the glenoid fossa, their design remains unregulated by the Food and Drug Administration. Consequently, the geometry is determined largely by the engineer's discretion, with limited biomechanical evidence to guide these decisions. The lack of validation regarding how sagittal curvature influences joint stress distribution under various anatomical and functional conditions represents a gap in current knowledge that warrants investigation.

View Article and Find Full Text PDF

Background: BCMA-directed chimeric antigen receptor (CAR)-T cell therapy represents a major therapeutic breakthrough for relapsed/refractory multiple myeloma (RRMM), offering deep and durable responses in heavily pretreated patients. However, a subset of patients experience early relapse or fail to respond, highlighting the need for strategies to enhance efficacy. Gamma-secretase inhibitors (GSIs) have been shown to increase surface BCMA expression on malignant plasma cells and may potentiate the activity of BCMA CAR-T cells, particularly in patients with low baseline BCMA antigen density.

View Article and Find Full Text PDF

Total hip arthroplasty (THA) is the standard surgical treatment for end-stage hip osteoarthritis, with its success dependent on precise preoperative planning, which, in turn, relies on accurate three-dimensional segmentation and reconstruction of the periarticular bone of the hip joint. However, patients with hip osteoarthritis often exhibit pathological characteristics, such as joint space narrowing, femoroacetabular impingement, osteophyte formation, and joint deformity. These changes present significant challenges for traditional manual or semi-automatic segmentation methods.

View Article and Find Full Text PDF