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Arjuna A, Milborne B, Putra AR, Mulyaningsih TR, Setiawan H, Islam MT, Felfel R, Ahmed I. Development of samarium-doped phosphate glass microspheres for internal radiotheranostic applications. Int J Pharm 2024; 653:123919. [PMID: 38373598 DOI: 10.1016/j.ijpharm.2024.123919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 01/25/2024] [Accepted: 02/16/2024] [Indexed: 02/21/2024]
Abstract
Internal radiotherapy delivers radioactive sources inside the body, near to or into malignant tumours, which may be particularly effective when malignancies are not responding to external beam radiotherapy. A pure beta emitter, 90Y, is currently used for internal radiotherapy. However, theranostic radionuclide-doped microspheres can be developed by incorporating 153Sm, which emits therapeutic beta and diagnostic gamma energies. This study investigated the production of high concentrations of samarium-content doped phosphate-based glass microspheres. The glass P60 (i.e. 60P2O5-25CaO-15Na2O) was mixed with Sm2O3 at ratios of 75:25 (G75:Sm25), 50:50 (G50:Sm50) and 25:75 (G25:Sm75) and processed via flame spheroidisation. Scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) confirmed the microsphere uniformity with significantly high samarium content up to 44 % in G25:Sm75. Via X-ray diffraction (XRD) analysis, samarium-doped microspheres appeared to be glass-ceramic in nature. Mass-loss, size and pH changes were performed over 28 days, revealing a significant increase in samarium microsphere stability. After 15 min of neutron activation (neutron flux 3.01 × 1013 n.cm-2.s-1), the specific activity of the microspheres (G75:Sm25, G50:Sm50 and G25:Sm75) was 0.28, 0.54 and 0.58 GBq.g-1, respectively. Therefore, the samarium microspheres produced in this study provide great potential for improving internal radiotherapy treatment for liver cancer by avoiding complex procedures and using less microspheres with shorter irradiation time.
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Affiliation(s)
- Andi Arjuna
- Advanced Materials Research Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK; Faculty of Pharmacy, Hasanuddin University, Makassar 90245, Indonesia
| | - Ben Milborne
- Advanced Materials Research Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK
| | - Amal Rezka Putra
- Research Organization for Nuclear Energy (ORTN), National Research and Innovation Agency (BRIN), Tangerang Selatan, Banten 15314, Indonesia
| | - Theresia Rina Mulyaningsih
- Research Organization for Nuclear Energy (ORTN), National Research and Innovation Agency (BRIN), Tangerang Selatan, Banten 15314, Indonesia
| | - Herlan Setiawan
- Research Organization for Nuclear Energy (ORTN), National Research and Innovation Agency (BRIN), Tangerang Selatan, Banten 15314, Indonesia
| | - Md Towhidul Islam
- Advanced Materials Research Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK
| | - Reda Felfel
- Advanced Materials Research Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK
| | - Ifty Ahmed
- Advanced Materials Research Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UK.
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Ehnert S, Histing T. Advances in Fracture Healing Research. Bioengineering (Basel) 2024; 11:67. [PMID: 38247944 PMCID: PMC10813380 DOI: 10.3390/bioengineering11010067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 12/20/2023] [Indexed: 01/23/2024] Open
Abstract
Despite a constant refinement of surgical techniques and bone fixation methods, up to 15% of fractures result in impaired healing or even develop a non-union [...].
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Affiliation(s)
| | - Tina Histing
- Department of Trauma and Reconstructive Surgery, Eberhard-Karls-University Tuebingen, BG Unfallklinik, 72076 Tuebingen, Germany;
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