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Radiochimica Acta

International Journal for chemical aspects of nuclear science and technology

Ed. by Qaim, Syed M.

12 Issues per year


IMPACT FACTOR 2016: 1.271
5-year IMPACT FACTOR: 1.286

CiteScore 2016: 1.20

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Source Normalized Impact per Paper (SNIP) 2016: 0.761

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2193-3405
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Volume 100, Issue 7 (Jul 2012)

Issues

Polymersomes as nano-carriers to retain harmful recoil nuclides in alpha radionuclide therapy: a feasibility study

L. Thijssen
  • 1 Delft University of Technology, Radiation, Radionuclides and Reactors, JB Delft, Niederlande
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ D. R. Schaart
  • 2 Delft University of Technology, Radiation, Radionuclides and Reactors, JB Delft, Niederlande
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ D. de Vries
  • 3 Delft University of Technology, Radiation, Radionuclides and Reactors, JB Delft, Niederlande
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ A. Morgenstern / F. Bruchertseifer / A. G. Denkova
Published Online: 2012-01-31 | DOI: https://doi.org/10.1524/ract.2012.1935

Abstract

Targeted alpha therapy has shown promising pre-clinical and clinical results in the fight against cancer. The use of in vivo generators, generating a highly cytotoxic cascade of alpha particles, is attracting increasing interest for clinical application. 225Ac is one of the nuclides that can serve as an in vivo generator. It is commercially available and provides four alpha particles with a total energy of 28 MeV per 225Ac decay. However, its alpha emitting daughter nuclides may escape from the target region due to recoil and cause unwanted toxicity in other parts of the body. In this paper, we investigate the feasibility of designing spherical, block-copolymer based nano-carriers (polymersomes) to retain the recoiling daughter nuclides. A Monte Carlo code, called NANVES, has been developed to simulate the range distributions of recoil atoms in different materials and to determine the optimum nano-carriers design. Recoil ranges in planar polystyrene films were determined experimentally and compared to simulations of the experiment, indicating that NANVES may provide accurate results. Simulations of various nano-carriers designs indicate that double-layered polymersomes with a diameter of 800 nm are capable of completely retaining the first daughter nuclide 221Fr, while the escape fraction of the third radioactive daughter 213Bi is reduced to 20% and the percentage of alpha particles emitted from escaped daughter products outside the nano-carriers is less than 10%.

Keywords: alpha radionuclide therapy; recoil retention; polymersomes

About the article

* Correspondence address: Delft University of Technology, Radiation, Radionuclides and Reactors, Mekelweg 15, 2629 JB Delft, Niederlande,


Published Online: 2012-01-31

Published in Print: 2012-07-01


Citation Information: Radiochimica Acta International journal for chemical aspects of nuclear science and technology, ISSN (Print) 2193-3405 , DOI: https://doi.org/10.1524/ract.2012.1935.

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© by Oldenbourg Wissenschaftsverlag, JB Delft, Germany. Copyright Clearance Center

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G. Wang, R.M. de Kruijff, A. Rol, L. Thijssen, E. Mendes, A. Morgenstern, F. Bruchertseifer, M.C.A. Stuart, H.T. Wolterbeek, and A.G. Denkova
Applied Radiation and Isotopes, 2014, Volume 85, Page 45
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Annual Reports Section "A" (Inorganic Chemistry), 2013, Volume 109, Page 468
[7]
Syed M. Qaim
Radiochimica Acta, 2012, Volume 100, Number 8-9, Page 635

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