A heat-generating lithium-ferrite doped bioactive glass for cancer hyperthermia

2020 ◽  
Vol 593 ◽  
pp. 412298
Author(s):  
A. Yazdanpanah ◽  
F. Moztarzadeh ◽  
S. Arabyazdi
Keyword(s):  
Bioactive Glass ◽  
Lithium Ferrite ◽  
Cancer Hyperthermia

Antimicrobial activity of bioactive glass associated to Brazilian red and green propolis

Planta Medica ◽  
2009 ◽  
Vol 75 (09) ◽  
Author(s):  
RFA Bonfim ◽  
VR Chitarra ◽  
RT Gomes ◽  
RD Zacarias ◽  
VR Santos ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Bioactive Glass

The effect of Tin additionon on Structural and magnetic properties of the stannoferrite Li0.5+0.5XFe2.5-1.5XSnXO4

2016 ◽  
Vol 12 (3) ◽  
pp. 4307-4321 ◽  
Author(s):  
Ahmed Hassan Ibrahim ◽  
Yehia Abbas
Keyword(s):  
Particle Size ◽  
Fine Particles ◽  
Magnetic Moments ◽  
Lithium Ferrite ◽  
Tem Analysis ◽  
Weiss Temperature ◽  
X Ray ◽  
Two Phases ◽  
Nanocrystalline Ferrite ◽  
20 Nm

The physical properties of ferrites are verysensitive to microstructure, which in turn critically dependson the manufacturing process.Nanocrystalline Lithium Stannoferrite system Li0.5+0.5XFe2.5-1.5XSnXO4,X= (0, 0.2, 0.4, 0.6, 0.8 and 1.0) fine particles were successfully prepared by double sintering ceramic technique at pre-sintering temperature of 500oC for 3 h andthepre-sintered material was crushed and sintered finally in air at 1000oC.The structural and microstructural evolutions of the nanophase have been studied using X-ray powder diffraction (XRD) and the Rietveld method.The refinement results showed that the nanocrystalline ferrite has a two phases of ordered and disordered phases for polymorphous lithium Stannoferrite.The particle size of as obtained samples were found to be ~20 nm through TEM that increases up to ~ 85 nmand isdependent on the annealing temperature. TEM micrograph reveals that the grains of sample are spherical in shape. (TEM) analysis confirmed the X-ray results.The particle size of stannic substituted lithium ferrite fine particle obtained from the XRD using Scherrer equation.Magneticmeasurements obtained from lake shore’s vibrating sample magnetometer (VSM), saturation magnetization ofordered LiFe5O8 was found to be (57.829 emu/g) which was lower than disordered LiFe5O8(62.848 emu/g).Theinterplay between superexchange interactions of Fe3+ ions at A and B sublattices gives rise to ferrimagnetic ordering of magnetic moments,with a high Curie-Weiss temperature (TCW ~ 900 K).

Interactions between Bioactive Glass and Periodontal Pathogens

1996 ◽  
Vol 9 (3) ◽  
Author(s):  
P. Stoor ◽  
V. Kirstilä ◽  
E. Söderling ◽  
I. Kangasniemi ◽  
K. Herbst ◽  
...  
Keyword(s):  
Bioactive Glass ◽  
Periodontal Pathogens

Surface Modification of Apatite-wollastonite Bioactive Glass-ceramic by Grafting with RGD Peptides

2013 ◽  
Vol 28 (10) ◽  
pp. 1137-1142
Author(s):  
Xiang ZHANG ◽  
Da-Li ZHOU ◽  
Qin LONG ◽  
Jia-Bei ZHOU ◽  
Yan-Fei TAN ◽  
...  
Keyword(s):  
Surface Modification ◽  
Bioactive Glass ◽  
Glass Ceramic ◽  
Rgd Peptides

Biocompatibility of the Composite Scaffold of Sol-Gel Bioactive Glass/Collagen

2011 ◽  
Vol 26 (8) ◽  
pp. 869-873
Author(s):  
Xue HAN ◽  
Xiao-Feng CHEN ◽  
Yong-Chun MENG ◽  
Jia-An ZHOU ◽  
Cai LIN ◽  
...  
Keyword(s):  
Bioactive Glass ◽  
Composite Scaffold ◽  
Sol Gel

Regeneration of Bone Defects Using Bioactive Glass Combined with Adipose-derived Mesenchymal Stem Cells. An experimental in vivo study

2019 ◽  
Vol 70 (6) ◽  
pp. 1983-1987
Author(s):  
Cristian Trambitas ◽  
Anca Maria Pop ◽  
Alina Dia Trambitas Miron ◽  
Dorin Constantin Dorobantu ◽  
Flaviu Tabaran ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Bioactive Glass ◽  
Bone Repair ◽  
Bone Defects ◽  
Calvarial Bone ◽  
Specific Protocol ◽  
Repair Mechanisms ◽  
Male Wistar Rats

Large bone defects are a medical concern as these are often unable to heal spontaneously, based on the host bone repair mechanisms. In their treatment, bone tissue engineering techniques represent a promising approach by providing a guide for osseous regeneration. As bioactive glasses proved to have osteoconductive and osteoinductive properties, the aim of our study was to evaluate by histologic examination, the differences in the healing of critical-sized calvarial bone defects filled with bioactive glass combined with adipose-derived mesenchymal stem cells, compared to negative controls. We used 16 male Wistar rats subjected to a specific protocol based on which 2 calvarial bone defects were created in each animal, one was filled with Bon Alive S53P4 bioactive glass and adipose-derived stem cells and the other one was considered control. At intervals of one week during the following month, the animals were euthanized and the specimens from bone defects were histologically examined and compared. The results showed that this biomaterial was biocompatible and the first signs of osseous healing appeared in the third week. Bone Alive S53P4 bioactive glass could be an excellent bone substitute, reducing the need of bone grafts.

Effect of Osteoplasty with Bioactive Glass (S53P4) in Bone Healing - In vivo Experiment on Common European Rabbits (Oryctolagus cuniculus)

2018 ◽  
Vol 69 (2) ◽  
pp. 429-433
Author(s):  
Solyom Arpad ◽  
Cristian Trambitas ◽  
Ecaterina Matei ◽  
Eugeniu Vasile ◽  
Fodor Pal ◽  
...  
Keyword(s):  
Bioactive Glass ◽  
Bone Fractures ◽  
Healing Process ◽  
Bone Grafts ◽  
Bone Substitutes ◽  
Native Bone ◽  
European Rabbits ◽  
Autologous Bone Grafts ◽  
Fracture Types

Osteoplasty, is a procedure mostly applied in complicated bone fractures. Nowadays this method is widely used in primary fracture treatment while the native bone graft is progressively replaced with various synthetic bone substitutes. From the numerous bone grafts we�d like to mention a representative of ceramics, the S53P4 bioactive glass. (BonAlive�). The aim of this study was to investigate the healing process of different fracture types generated on rabbit femurs. During this experiment we used seven common European rabbits. We separated these animals into two groups; in the first group we surgically generated a total fracture in the middle 1/3 of the femur, while in the second group, we produced only a bone defect on the femur. The osteoplasty was carried out with bioactive glass and autologous bone grafts. The radiographic follow-up was immediate after the operation and after 3, 6 and 7 weeks. The animals were euthanized after 19, 20 and 21 weeks, for histomorphometric examination of the femur. It was also studied the ionic release from the used bioactive glass at physiological pH and the etching of the glass was studied by Scanning Electron Microscopy.

Synthesis, Structure and Dielectric Properties of Magnesium-substituted Lithium Ferrite

2016 ◽  
Vol 8 (4(2)) ◽  
pp. 04066-1-04066-6
Author(s):  
L. S. Kaykan ◽  
◽  
J. S. Kaykan ◽  
I. P. Yaremiy ◽  
O. M. Ugorchuk ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Lithium Ferrite
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