Thallium and selenite doped carbonated hydroxyapatite: Microstructural features and anticancer activity assessment against human lung carcinoma

Shoueir, Kamel R.; Ahmed, M.K.; Gaber, Sara A. Abdel; El‐Kemary, Maged

doi:10.1016/j.ceramint.2019.10.268

Cited by 91 publications

(18 citation statements)

References 73 publications

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“…Consequently, the ideal mimicking for bone regeneration must include multi-dopant HAP which reinforced with architectural fibers to balance between rigidity and flexibility of both ceramic and fiber. Synthetic HAP as a ceramic has its drawbacks; low mechanical properties restrict its load applications 18 ; however, HAP structure is tolerant to the ionic substitutions, 9,19,20 whereas substitution of trace elements may modify its physicochemical/biological behavior dramatically 9,19,21,22 such as; (Ag + , Ti 4+ , Zn 2+ , Sr 2+ , and SeO 3 2 − ) to show antibacterial activity, 23 (Mg 2+ and ZrO 2+ ) 23,24 to enhance its mechanical properties, (Eu 3+ and Gd 3+ ) to induce luminescence features, 25 or with Si 2+ , Sr 2+ , and F − to improve its osteoconduction. 26 In addition, it could be mentioned that the higher valence of the dopant than the host ion may enhance the bioactivity of the whole composition.…”

Section: Introductionmentioning

confidence: 99%

RETRACTION NOTICE: Mechanical, microstructural properties and cell adhesion of Sr/Se-hydroxyapatite/graphene/polycaprolactone nanofibers

Al-Wafi

Mansour

Ahmed

2020

Journal of Thermoplastic Composite Materials

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Electrospun nanofibrous scaffolds containing co-dopant of Sr/Se into carbonated hydroxyapatite has been synthesized in situ with graphene (G) nanosheets and carried on polycaprolactone at different contributions of G. The powder and the nanofibrous samples were investigated using X-ray diffraction, transmission electron microscopy, and field emission scanning electron microscopy (FESEM). The FESEM micrographs show that the highest content of G (0.2 G) was formed in non-oriented/rough/cracked fibers with diameters around 0.3–0.4 µm at the maximum. The tensile strength of nanofibrous scaffolds was improved with the addition of G nanosheets and the maximum tensile strength of 0.2 G was around 6.39 ± 0.24 MPa, while the minimum cell viability ratio was about 94.4 ± 3.2% for the free G nanofibers. The in vitro attachment of HFB4 cell lines was investigated and it showed that nanofibrous scaffolds have induced cells to be proliferated and spread on the nanofibrous scaffolds’ surface. This behavior of cells growth encourages more investigations for these nanofibrous scaffolds to be promoted for clinical applications.

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Section: Introductionmentioning

confidence: 99%

RETRACTION NOTICE: Mechanical, microstructural properties and cell adhesion of Sr/Se-hydroxyapatite/graphene/polycaprolactone nanofibers

Al-Wafi

Mansour

Ahmed

2020

Journal of Thermoplastic Composite Materials

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“…The crystallite size in the polymeric phase was calculated using Scherrer's formula [ [40] , [41] , [42] ]:

where D refers to the crystallite size in nm, k represents the shape factor (0.9), λ is the wavelength of the X-rays (1.54056 Å for CuK α radiation), while

is the corrected full width at half maximum expressed in radians, and θ is the Bragg diffraction angle.…”

Section: Methodsmentioning

confidence: 99%

Nanofibrous ε-polycaprolactone scaffolds containing Ag-doped magnetite nanoparticles: Physicochemical characterization and biological testing for wound dressing applications in vitro and in vivo

Ahmed

Zayed

El-Dek

et al. 2021

Bioactive Materials

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“…Considering the literature, some authors replaced OPC with 10% and 15% bagasse ash to optimize the replacement level of OPC, but these papers did not focus on the particle size when the waste was calcined to produce ultrafine nanopowder. Nanotechnology is a trend in many applications [28][29][30][31]. Pure CaO is used in many applications, such as the cement industry, biodiesel production, the petroleum industry, electric lighting, paper industry, and power production [32][33][34][35][36][37][38].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Calcium Oxide Nanoparticles from Industrial Waste on the Performance of Hardened Cement Pastes: Physicochemical Study

et al. 2020

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Large amounts of carbonated mud waste (CMW) require disposal during sugar manufacturing after the carbonation process. The lightweight of CMW enables its utilization as a partial replacement for the cement to reduce costs and CO2 emissions. Here, various levels of CMW, namely, 0, 5, 10, 15, 20, and 25 wt.% were applied to produce composite cement samples with ordinary Portland cement (OPC) as a regular mix design series. Pure calcium oxide (CaO) nanoparticles were obtained after the calcination of CMW. The techniques of X-ray fluorescence spectrometers (XRF), Transmission electron microscope (TEM), Selected area diffraction (SAED), Scanning electron microscope (SEM), energy dixpersive X-ray (EDX), and dynamic light scattering (DLS) were used to characterize the obtained CaO nanoparticles. According to the compressive strength and bulk density results, 15 wt.% CMW was optimal for the mix design. The specific surface area increased from 27.8 to 134.8 m2/g when the CMW was calcined to 600 °C. The compressive strength of the sample containing 15% CMW was lower than the values of the other pastes containing 5% and 10% CMW at all of the curing times. The porosity factor of the hardened cement pastes released with a curing time of up to 28 days. Excessive CMW of up to 25 wt.% reduced the properties of OPC.

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Thallium and selenite doped carbonated hydroxyapatite: Microstructural features and anticancer activity assessment against human lung carcinoma

Cited by 91 publications

References 73 publications

RETRACTION NOTICE: Mechanical, microstructural properties and cell adhesion of Sr/Se-hydroxyapatite/graphene/polycaprolactone nanofibers

RETRACTION NOTICE: Mechanical, microstructural properties and cell adhesion of Sr/Se-hydroxyapatite/graphene/polycaprolactone nanofibers

Nanofibrous ε-polycaprolactone scaffolds containing Ag-doped magnetite nanoparticles: Physicochemical characterization and biological testing for wound dressing applications in vitro and in vivo

Evaluation of Calcium Oxide Nanoparticles from Industrial Waste on the Performance of Hardened Cement Pastes: Physicochemical Study

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