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A Gallium-Doped Cement for the Treatment of Bone Cancers. the Effect of ZnO ↔ Ga2O3substitution of an Ionomeric Glass Series on the Rheological, Mechanical, PH and Ion-Eluting Properties of their Corresponding Glass Polyalkenoate Cements
Materials Research Express
  • Sunjeev Phull
  • Alireza Rahimnejad Yazdi
  • Mark R. Towler, Missouri University of Science and Technology
Abstract

The primary treatment for patients suffering from bone cancers is resection of the tumor followed by reconstruction of the damaged bone. Despite the administration of post-operative chemotherapy, tumor recurrence continues to present itself as a severe complication leading to re-operation. Attempts to incorporate chemotherapeutic drugs into bone cements elicits local toxic effects on healthy bone, which could compromise implant fixation. Alternatively, the local administration of gallium (Ga) may prove to be more effective. This report considers the development of a Ga ionomeric glass series (0.48SiO2-0.355ZnO-0.06CaO-0.08SrO-0.02P2O5-0.005Ta2O5, with 0.01-0.05 mol% substitution for ZnO). X-ray Diffraction (XRD) confirmed the amorphous glass structure and Energy Dispersive x-ray Fluorescence (EDXRF) verified the successful addition of Ga into the glass series at the expense of Zinc (Zn). A Ga-GPC series was then formulated by mixing the glass particles with aqueous poly(acrylic) acid (PAA) and trisodium citrate (TSC). Fourier transform infrared (FTIR) spectroscopy demonstrated no structural changes to the GPC matrix with the incorporation of Ga. Measurements of the rheological properties demonstrated an exponential increase in setting time with increasing Ga content. Furthermore, the addition of ≥ 3 mol% Ga demonstrated deleterious effects on the GPC's mechanical properties and an analysis of pH confirmed that it decreased with increasing Ga content, suggesting a reduction in glass reactivity and PAA cross-linking. Finally, inductively coupled plasma - optical emission spectrometry (ICP-OES) demonstrated the controlled release of Ga across the GPC series, which will prove beneficial to future in vitro studies.

Department(s)
Chemical and Biochemical Engineering
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2023 The Authors, All rights reserved.
Creative Commons Licensing
Creative Commons Attribution 4.0
Publication Date
6-1-2021
Publication Date
01 Jun 2021
Citation Information
Sunjeev Phull, Alireza Rahimnejad Yazdi and Mark R. Towler. "A Gallium-Doped Cement for the Treatment of Bone Cancers. the Effect of ZnO ↔ Ga2O3substitution of an Ionomeric Glass Series on the Rheological, Mechanical, PH and Ion-Eluting Properties of their Corresponding Glass Polyalkenoate Cements" Materials Research Express Vol. 8 Iss. 6 (2021) ISSN: 2053-1591
Available at: http://works.bepress.com/mark-towler/3/