scholarly journals Development and in vitro evaluation of κ-carrageenan based polymeric hybrid nanocomposite scaffolds for bone tissue engineering

RSC Advances ◽  
2020 ◽  
Vol 10 (66) ◽  
pp. 40529-40542 ◽  
Author(s):  
Muhammad Umar Aslam Khan ◽  
Mohsin Ali Raza ◽  
Hassan Mehboob ◽  
Mohammed Rafiq Abdul Kadir ◽  
Saiful Izwan Abd Razak ◽  
...  

The excellent biocompatible and osteogenesis characteristics of porous scaffolds play a vital role in bone regeneration.

RSC Advances ◽  
2021 ◽  
Vol 11 (30) ◽  
pp. 18615-18616
Author(s):  
Muhammad Umar Aslam Khan ◽  
Mohsin Ali Raza ◽  
Hassan Mehboob ◽  
Mohammed Rafiq Abdul Kadir ◽  
Saiful Izwan Abd Razak ◽  
...  

Correction for ‘Development and in vitro evaluation of κ-carrageenan based polymeric hybrid nanocomposite scaffolds for bone tissue engineering’ by Muhammad Umar Aslam Khan et al., RSC Adv., 2020, 10, 40529–40542. DOI: 10.1039/D0RA07446B.


Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1319
Author(s):  
Muhammad Umar Aslam Khan ◽  
Wafa Shamsan Al-Arjan ◽  
Mona Saad Binkadem ◽  
Hassan Mehboob ◽  
Adnan Haider ◽  
...  

Bone tissue engineering is an advanced field for treatment of fractured bones to restore/regulate biological functions. Biopolymeric/bioceramic-based hybrid nanocomposite scaffolds are potential biomaterials for bone tissue because of biodegradable and biocompatible characteristics. We report synthesis of nanocomposite based on acrylic acid (AAc)/guar gum (GG), nano-hydroxyapatite (HAp NPs), titanium nanoparticles (TiO2 NPs), and optimum graphene oxide (GO) amount via free radical polymerization method. Porous scaffolds were fabricated through freeze-drying technique and coated with silver sulphadiazine. Different techniques were used to investigate functional group, crystal structural properties, morphology/elemental properties, porosity, and mechanical properties of fabricated scaffolds. Results show that increasing amount of TiO2 in combination with optimized GO has improved physicochemical and microstructural properties, mechanical properties (compressive strength (2.96 to 13.31 MPa) and Young’s modulus (39.56 to 300.81 MPa)), and porous properties (pore size (256.11 to 107.42 μm) and porosity (79.97 to 44.32%)). After 150 min, silver sulfadiazine release was found to be ~94.1%. In vitro assay of scaffolds also exhibited promising results against mouse pre-osteoblast (MC3T3-E1) cell lines. Hence, these fabricated scaffolds would be potential biomaterials for bone tissue engineering in biomedical engineering.


Coatings ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1120
Author(s):  
Wafa Shamsan Al-Arjan ◽  
Muhammad Umar Aslam Khan ◽  
Samina Nazir ◽  
Saiful Izwan Abd Razak ◽  
Mohammed Rafiq Abdul Kadir

Fabrication of reinforced scaffolds to repair and regenerate defected bone is still a major challenge. Bone tissue engineering is an advanced medical strategy to restore or regenerate damaged bone. The excellent biocompatibility and osteogenesis behavior of porous scaffolds play a critical role in bone regeneration. In current studies, we synthesized polymeric nanocomposite material through free-radical polymerization to fabricate porous nanocomposite scaffolds by freeze drying. Functional group, surface morphology, porosity, pore size, and mechanical strength were examined through Fourier Transform Infrared Spectroscopy (FTIR), Single-Electron Microscopy (SEM), Brunauer-Emmet-Teller (BET), and Universal Testing Machine (UTM), respectively. These nanocomposites exhibit enhanced compressive strength (from 4.1 to 16.90 MPa), Young’s modulus (from 13.27 to 29.65 MPa) with well appropriate porosity and pore size (from 63.72 ± 1.9 to 45.75 ± 6.7 µm), and a foam-like morphology. The increasing amount of graphene oxide (GO) regulates the porosity and mechanical behavior of the nanocomposite scaffolds. The loading and sustained release of silver-sulfadiazine was observed to be 90.6% after 260 min. The in-vitro analysis was performed using mouse pre-osteoblast (MC3T3-E1) cell lines. The developed nanocomposite scaffolds exhibited excellent biocompatibility. Based on the results, we propose these novel nanocomposites can serve as potential future biomaterials to repair defected bone with the load-bearing application, and in bone tissue engineering.


2016 ◽  
Vol 86 ◽  
pp. 434-442 ◽  
Author(s):  
Samaneh Saber-Samandari ◽  
Saeed Saber-Samandari ◽  
Shiva Kiyazar ◽  
Jamshid Aghazadeh ◽  
Ali Sadeghi

2018 ◽  
pp. 461-475 ◽  
Author(s):  
Ozan Karaman

The limitation of orthopedic fractures and large bone defects treatments has brought the focus on fabricating bone grafts that could enhance ostegenesis and vascularization in-vitro. Developing biomimetic materials such as mineralized nanofibers that can provide three-dimensional templates of the natural bone extracellular-matrix is one of the most promising alternative for bone regeneration. Understanding the interactions between the structure of the scaffolds and cells and therefore the control cellular pathways are critical for developing functional bone grafts. In order to enhance bone regeneration, the engineered scaffold needs to mimic the characteristics of composite bone ECM. This chapter reviews the fabrication of and fabrication techniques for fabricating biomimetic bone tissue engineering scaffolds. In addition, the chapter covers design criteria for developing the scaffolds and examples of enhanced osteogenic differentiation outcomes by fabricating biomimetic scaffolds.


2020 ◽  
Author(s):  
weiling huo ◽  
Xiaodong Wu ◽  
Yancheng zheng ◽  
Jian Cheng ◽  
Qiang Xu ◽  
...  

Reconstruction of bone defect is one of the difficult problems in orthopedic treatment, and bone tissue scaffold implantation is the most promising direction of bone defect reconstruction. In this study, we used the combination of HA (Hydroxyapatite) and PLGA [Poly (lactic-co-glycolic acid)] in the construction of polymer scaffolds, and introduced bioactive MSM (Methyl sulfonyl methane) into polymer scaffolds to prepare porous scaffolds. The osteoblasts, isolated and cultured in vitro, were seeded in the porous scaffolds to construct tissue-engineered scaffolds. Meanwhile, the model of rabbit radius defect was constructed to evaluate the biological aspects of five tissue-engineered scaffolds, which provided experimental basis for the application of the porous scaffolds in bone tissue engineering. The SEM characterization showed the pore size of porous scaffolds was uniform and the porosity was about 90%. The results of contact Angle testing suggested that the hydrophobic porous scaffold surface could effectively promote cell adhesion and cell proliferation, while mechanical property test showed good machinability. The results of drug loading and release efficiency of MSM showed that porous scaffolds could load MSM efficiently and prolong the release time of MSM. In vitro incubation of porous scaffolds and osteoblasts showed that the addition of a small quantity of MSM could promote the infiltration and proliferation of osteoblasts on the porous scaffolds. Similar results were obtained by implanting the tissue-engineered scaffolds, fused with the osteoblasts and MSM/HA/PLGA porous scaffolds, into the rabbit radius defect, which provided experimental basis for the application of the MSM/HA/PLGA porous scaffolds in bone tissue engineering.


Author(s):  
Tran Thanh Hoai ◽  
Nguyen Kim Nga

In this study, porous scaffolds were fabricated using inorganic material-hydroxyapatite and chitosan for bone-tissue engineering. The combination of hydroxyapatite and chitosan may result in increasing biocompatibility of the scaffolds. The scaffolds were prepared by solvent casting and paticulate leaching method. Bioactivity of the scaffolds was evaluated through in vitro experiments by soaking scaffold samples in simulated body fluid (SBF). The scaffolds obtained were highly porous and interconnected with a mean pore size of around 200µm and porosity about 79 %. The apatite-mineral layer was produced on the HAp/chitosan after 10 days of soaking in SBF, however, it was not observed on the chitosan scaffold after 10 days soaking. The results revealed that the HAp/chitosan scaffold showed better bioactivity than the chitosan scaffold. Keywords Scaffold, Chitosan, Apatite, SBF. In this study, porous scaffolds were fabricated using inorganic material-hydroxyapatite and chitosan for bone-tissue engineering. The combination of hydroxyapatite and chitosan may result in increasing biocompatibility of the scaffolds. The scaffolds were prepared by solvent casting and paticulate leaching method. Bioactivity of the scaffolds was evaluated through in vitro experiments by soaking scaffold samples in simulated body fluid (SBF). The scaffolds obtained were highly porous and interconnected with a mean pore size of around 200µm and porosity about 79 %. The apatite-mineral layer was produced on the HAp/chitosan after 10 days of soaking in SBF, however, it was not observed on the chitosan scaffold after 10 days soaking. The results revealed that the HAp/chitosan scaffold showed better bioactivity than the chitosan scaffold. Keywords: Scaffold, Chitosan, Apatite, SBF.   In this study, porous scaffolds were fabricated using inorganic material-hydroxyapatite and chitosan for bone-tissue engineering. The combination of hydroxyapatite and chitosan may result in increasing biocompatibility of the scaffolds. The scaffolds were prepared by solvent casting and paticulate leaching method. Bioactivity of the scaffolds was evaluated through in vitro experiments by soaking scaffold samples in simulated body fluid (SBF). The scaffolds obtained were highly porous and interconnected with a mean pore size of around 200µm and porosity about 79 %. The apatite-mineral layer was produced on the HAp/chitosan after 10 days of soaking in SBF, however, it was not observed on the chitosan scaffold after 10 days soaking. The results revealed that the HAp/chitosan scaffold showed better bioactivity than the chitosan scaffold. Keywords: Scaffold, Chitosan, Apatite, SBF. References [1] M.P. Bostrom, D.A. 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Kothapalli, M.T. Shaw, M. Wei, Biodegradable HA-PLA 3-D porous scaffolds: effect of nano-sized filler content on scaffold properties, Acta Biomater. 1 (2005) 653-662. https://doi.org/10.1016/j.actbio.2005.06.005.[15] T. Kokubo, H. Takadama, How useful is SBF in predicting in vivo bone bioactivity?, Biomaterials 27 (2006) 2907-2915. https://doi.org/10.1016/j. biomaterials.2006.01.017[16] T.T. Hoai, N.K. Nga, Effect of pore architecture on osteoblast adhesion and proliferation on hydroxyapatite/poly (D, L) lactic acid-based bone scaffolds, J. Iran. Chem. Soc. 15 (2018) 1663-1671. https://doi.org/10.1007/s13738-018-1365-4.        


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