scholarly journals Biocompatible chitosan–collagen–hydroxyapatite nanofibers coated with platelet-rich plasma for regenerative engineering of the rotator cuff of the shoulder

RSC Advances ◽  
2019 ◽  
Vol 9 (46) ◽  
pp. 27013-27020 ◽  
Author(s):  
Yi Tang ◽  
Hui Zhang ◽  
Qinghua Wei ◽  
Xu Tang ◽  
Wanqiang Zhuang
Keyword(s):  
Tissue Engineering ◽  
Rotator Cuff ◽  
Bone Tissue Engineering ◽  
Bone Tissue ◽  
Platelet Rich Plasma ◽  
Regenerative Engineering

Over the last few decades, extraordinary progress has been accomplished in the field of bone tissue engineering.

scholarly journals Material-Dependent Formation and Degradation of Bone Matrix—Comparison of Two Cryogels

2020 ◽  
Vol 7 (2) ◽  
pp. 52 ◽  
Author(s):  
Weidong Weng ◽  
Victor Häussling ◽  
Romina H. Aspera-Werz ◽  
Fabian Springer ◽  
Helen Rinderknecht ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Bone Tissue Engineering ◽  
Bone Tissue ◽  
Mineral Content ◽  
Platelet Rich Plasma ◽  
Calcium Phosphates ◽  
Bone Matrix ◽  
Osteogenic Potential ◽  
Toxic Substances ◽  
The Matrix

Cryogels represent ideal carriers for bone tissue engineering. We recently described the osteogenic potential of cryogels with different protein additives, e.g., platelet-rich plasma (PRP). However, these scaffolds raised concerns as different toxic substances are required for their preparation. Therefore, we developed another gelatin (GEL)-based cryogel. This study aimed to compare the two scaffolds regarding their physical characteristics and their influence on osteogenic and osteoclastic cells. Compared to the PRP scaffolds, GEL scaffolds had both larger pores and thicker walls, resulting in a lower connective density. PRP scaffolds, with crystalized calcium phosphates on the surface, were significantly stiffer but less mineralized than GEL scaffolds with hydroxyapatite incorporated within the matrix. The GEL scaffolds favored adherence and proliferation of the osteogenic SCP-1 and SaOS-2 cells. Macrophage colony-stimulating factor (M-CSF) and osteoprotegerin (OPG) levels seemed to be induced by GEL scaffolds. Levels of other osteoblast and osteoclast markers were comparable between the two scaffolds. After 14 days, mineral content and stiffness of the cryogels were increased by SCP-1 and SaOS-2 cells, especially of PRP scaffolds. THP-1 cell-derived osteoclastic cells only reduced mineral content and stiffness of PRP cryogels. In summary, both scaffolds present powerful advantages; however, the possibility to altered mineral content and stiffness may be decisive when it comes to using PRP or GEL scaffolds for bone tissue engineering.

scholarly journals Impact of Four Protein Additives in Cryogels on Osteogenic Differentiation of Adipose-Derived Mesenchymal Stem Cells

2019 ◽  
Vol 6 (3) ◽  
pp. 67 ◽  
Author(s):  
Victor Häussling ◽  
Sebastian Deninger ◽  
Laura Vidoni ◽  
Helen Rinderknecht ◽  
Marc Ruoß ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Bone Tissue Engineering ◽  
Bone Tissue ◽  
Cell Attachment ◽  
Platelet Rich Plasma ◽  
Bone Matrix ◽  
Survival Rates ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Rgd Peptides

Human adipose-derived mesenchymal stem/stromal cells (Ad-MSCs) have great potential for bone tissue engineering. Cryogels, mimicking the three-dimensional structure of spongy bone, represent ideal carriers for these cells. We developed poly(2-hydroxyethyl methacrylate) cryogels, containing hydroxyapatite to mimic inorganic bone matrix. Cryogels were additionally supplemented with different types of proteins, namely collagen (Coll), platelet-rich plasma (PRP), immune cells-conditioned medium (CM), and RGD peptides (RGD). The different protein components did not affect scaffolds’ porosity or water-uptake capacity, but altered pore size and stiffness. Stiffness was highest in scaffolds with PRP (82.3 kPa), followed by Coll (55.3 kPa), CM (45.6 kPa), and RGD (32.8 kPa). Scaffolds with PRP, CM, and Coll had the largest pore diameters (~60 µm). Ad-MSCs were osteogenically differentiated on these scaffolds for 14 days. Cell attachment and survival rates were comparable for all four scaffolds. Runx2 and osteocalcin levels only increased in Ad-MSCs on Coll, PRP and CM cryogels. Osterix levels increased slightly in Ad-MSCs differentiated on Coll and PRP cryogels. With differentiation alkaline phosphatase activity decreased under all four conditions. In summary, besides Coll cryogel our PRP cryogel constitutes as an especially suitable carrier for bone tissue engineering. This is of special interest, as this scaffold can be generated with patients’ PRP.

scholarly journals Clinical Outcome and 8-Year Follow-Up of Alveolar Bone Tissue Engineering for Severely Atrophic Alveolar Bone Using Autologous Bone Marrow Stromal Cells with Platelet-Rich Plasma and β-Tricalcium Phosphate Granules

2021 ◽  
Vol 10 (22) ◽  
pp. 5231
Author(s):  
Izumi Asahina ◽  
Hideaki Kagami ◽  
Hideki Agata ◽  
Masaki J. Honda ◽  
Yoshinori Sumita ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Bone Marrow ◽  
Bone Tissue Engineering ◽  
Bone Tissue ◽  
Bone Marrow Stromal Cells ◽  
Alveolar Bone ◽  
Platelet Rich Plasma ◽  
Long Term Follow Up

Background: Although bone tissue engineering for dentistry has been studied for many years, the clinical outcome for severe cases has not been established. Furthermore, there are limited numbers of studies that include long-term follow-up. In this study, the safety and efficacy of bone tissue engineering for patients with a severely atrophic alveolar bone were examined using autogenous bone marrow stromal cells (BMSCs), and the long-term stability was also evaluated. Methods: BMSCs from iliac bone marrow aspirate were cultured and expanded. Then, induced osteogenic cells were transplanted with autogenous platelet-rich plasma (PRP) and β-tricalcium phosphate granules (β-TCP) for maxillary sinus floor and alveolar ridge augmentation. Eight patients (two males and six females) with an average age of 54.2 years underwent cell transplantation. Safety was assessed by monitoring adverse events. Radiographic evaluation and bone biopsies were performed to evaluate the regenerated bone. Results: The major population of transplanted BMSCs belonged to the fraction of CD34−, CD45dim, and CD73+ cells, which was only 0.065% of the total bone marrow cells. Significant deviations were observed in cell growth and alkaline phosphatase activities among individuals. However, bone regeneration was observed in all patients and the average bone area in the biopsy samples was 41.9% 6 months following transplantation, although there were also significant deviations among each case. No adverse events related to the transplants were observed. In the regenerated bone, 27 out of 29 dental implants were integrated. Dental implants and regenerated bone were stable for an average follow-up period of 7 years and 10 months. Conclusions: Although individual variations were observed, the results showed that bone tissue engineering using BMSCs with PRP and β-TCP was feasible for patients with severe atrophic maxilla throughout a long-term follow-up period and was considered safe. However, further studies with a larger number of cases and controls to confirm the efficacy of BMSCs and the development of a protocol to establish a reproducible quality of stem cell-based graft material will be required.

Bone regenerative engineering via controlled release of simple signaling molecules

2018 ◽  
Author(s):  
◽  
Soheila Aliakbarighavimi
Keyword(s):  
Tissue Engineering ◽  
Calcium Phosphate ◽  
Bone Tissue Engineering ◽  
Bone Tissue ◽  
Critical Size ◽  
Calcium Phosphates ◽  
Signaling Molecules ◽  
Engineering Applications ◽  
Regenerative Engineering ◽  
Critical Size Defects

[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] More than 1.7 billion people worldwide are suffering from bone defects that are due to trauma or medical conditions such as degenerative diseases. Bone can repair and remodel itself, however, in the case of critical size defects, healing is impossible without intervention. Bone regenerative engineering is a new field that focuses on the development of bone substitutes that can stimulate the body to remodel bone tissue in the defect site, most commonly utilizing calcium phosphates in their design to mimic the inorganic phase of bone. Most of previous research has overlooked that calcium phosphates consist of two non-proteinous signaling molecules calcium ions (Ca2+) and phosphate ions (Pi) which are referred as simple signaling molecules that are osteoinductive in a time-dependent and concentration-dependent manner. Higher concentrations of these ions are not only non-inductive, but are also cytotoxic. In my PhD research, I first identified the therapeutic range of Ca2+ and Pi after which I developed two novel platforms capable of controllably delivering these ions within their inductive therapeutic windows. The first platform was comprised of synthetic, hydrophobic, five-carbon polyesters incorporated with rapid dissoluting monobasic calcium phosphate as a scaffold for critical size defects in long bones. The second platform consisted of natural, hydrophilic, chitosan-based hydrogels incorporated with slow dissoluting dibasic calcium phosphate for the treatment of vertebral compression fractures. While I established a new aspect for controllably delivering Ca2+ and Pi as bioactive additives for different bone tissue engineering applications, we are interested in other simple signaling molecules as well. Moving forward, our research group is interested to investigate the effect of hydrogen sulfide (H2S), hydrogen peroxide (H2O2), and carbon monoxide (CO) as cytoprotective, angiogenic, and neuroinductive simple signaling molecules, respectively. The spatiotemporal delivery of multiple simple signaling molecules can be promising for complex bone tissue engineering applications.

Fabrication of platelet-rich plasma/silica scaffolds for bone tissue engineering

2018 ◽  
Vol 7 (2) ◽  
pp. 74-81 ◽  
Author(s):  
Farnaz Sani ◽  
Fatemeh Mehdipour ◽  
Tahereh Talaei-Khozani ◽  
Mahsa Sani ◽  
Vahid Razban
Keyword(s):  
Tissue Engineering ◽  
Bone Tissue Engineering ◽  
Bone Tissue ◽  
Platelet Rich Plasma

Incorporating platelet-rich plasma into coaxial electrospun nanofibers for bone tissue engineering

2018 ◽  
Vol 547 (1-2) ◽  
pp. 656-666 ◽  
Author(s):  
Gu Cheng ◽  
Xiao Ma ◽  
Junmei Li ◽  
Yuet Cheng ◽  
Yan Cao ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Bone Tissue Engineering ◽  
Bone Tissue ◽  
Platelet Rich Plasma ◽  
Electrospun Nanofibers

scholarly journals 3D printing of silk fibroin-based hybrid scaffold treated with platelet rich plasma for bone tissue engineering

2019 ◽  
Vol 4 ◽  
pp. 256-260 ◽  
Author(s):  
Liang Wei ◽  
Shaohua Wu ◽  
Mitchell Kuss ◽  
Xiping Jiang ◽  
Runjun Sun ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
3D Printing ◽  
Bone Tissue Engineering ◽  
Bone Tissue ◽  
Silk Fibroin ◽  
Platelet Rich Plasma ◽  
Hybrid Scaffold

HYDROXYAPATITE, ALGINATE, AND CHITOSAN FOR BONE SCAFFOLDS: SPECTROSCOPY STUDY

2016 ◽  
Vol 19 (2) ◽  
pp. 93-100
Author(s):  
Lalita El Milla
Keyword(s):  
Tissue Engineering ◽  
Bone Tissue Engineering ◽  
Bone Tissue ◽  
Functional Groups ◽  
Bone Growth ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Tissue Engineering Scaffolds ◽  
Hydroxyapatite Powder ◽  
Materials Used

Scaffolds is three dimensional structure that serves as a framework for bone growth. Natural materials are often used in synthesis of bone tissue engineering scaffolds with respect to compliance with the content of the human body. Among the materials used to make scafffold was hydroxyapatite, alginate and chitosan. Hydroxyapatite powder obtained by mixing phosphoric acid and calcium hydroxide, alginate powders extracted from brown algae and chitosan powder acetylated from crab. The purpose of this study was to examine the functional groups of hydroxyapatite, alginate and chitosan. The method used in this study was laboratory experimental using Fourier Transform Infrared (FTIR) spectroscopy for hydroxyapatite, alginate and chitosan powders. The results indicated the presence of functional groups PO43-, O-H and CO32- in hydroxyapatite. In alginate there were O-H, C=O, COOH and C-O-C functional groups, whereas in chitosan there were O-H, N-H, C=O, C-N, and C-O-C. It was concluded that the third material containing functional groups as found in humans that correspond to the scaffolds material in bone tissue engineering.

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