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Locating Functional...
Locating Functionalized Gold Nanoparticles Using Electrical Impedance Tomography
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- Bayford, Richard H. (author)
- Middlesex Univ Burroughs Hendon, GBR
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- Damaso, Rui (author)
- Middlesex Univ, GBR
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- Neshatvar, Nazanin (author)
- University College London, GBR
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- Ivanenko, Yevhen (author)
- Blekinge Tekniska Högskola,Institutionen för matematik och naturvetenskap
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- Rademacher, Thomas W. (author)
- Emergex Vaccines Holding Ltd, GBR
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- Wu, Yu (author)
- University College London, GBR
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- Seifnaraghi, Nima (author)
- Middlesex Univ, GBR
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- Ghali, Lucy (author)
- Middlesex Univ, GBR
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- Patel, Nakul (author)
- Middlesex Univ, GBR
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- Roitt, Ivan (author)
- Middlesex Univ, GBR
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- Nordebo, Sven (author)
- Linnaeus Univ, SWE
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- Demosthenous, Andreas (author)
- University College London, GBR
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(creator_code:org_t)
- IEEE, 2022
- 2022
- English.
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In: IEEE Transactions on Biomedical Engineering. - : IEEE. - 0018-9294 .- 1558-2531. ; 69:1, s. 494-502
- Related links:
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https://eprints.mdx....
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- Objective: An imaging device to locate functionalised nanoparticles, whereby therapeutic agents are transported from the site of administration specifically to diseased tissues, remains a challenge for pharmaceutical research. Here, we show a new method based on electrical impedance tomography (EIT) to provide images of the location of gold nanoparticles (GNPs) and the excitation of GNPs with radio frequencies (RF) to change impedance permitting an estimation of their location in cell models Methods: We have created an imaging system using quantum cluster GNPs as contrast agent, activated with RF fields to heat the functionalized GNPs, which causes a change in impedance in the surrounding region. This change is then identified with EIT. Results: Images of impedance changes of around 80 +/- 4% are obtained for a sample of citrate stabilized GNPs in a solution of phosphate-buffered saline. A second quantification was carried out using colorectal cancer cells incubated with culture media, and the internalization of GNPs into the colorectal cancer cells was undertaken to compare them with the EIT images. When the cells were incubated with functionalised GNPs, the change was more apparent, approximately 40 +/- 2%. This change was reflected in the EIT image as the cell area was more clearly identifiable from the rest of the area. Significance: EIT can be used as a new method to locate functionalized GNPs in human cells and help in the development of GNP-based drugs in humans to improve their efficacy in the future.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Medicinteknik -- Medicinsk laboratorie- och mätteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Medical Engineering -- Medical Laboratory and Measurements Technologies (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Strömningsmekanik och akustik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Fluid Mechanics and Acoustics (hsv//eng)
Keyword
- Electrical impedance tomography
- Drugs
- Optical waveguides
- Impedance
- Nanoparticles
- Magnetic resonance imaging
- Imaging
- Colorectal cells
- electrical impedance tomography (EIT)
- gold nanoparticles
- impedance change
- radio frequencies
- targeted drug delivery
- MASS-SPECTROMETRY
- CANCER
- SIZE
Publication and Content Type
- ref (subject category)
- art (subject category)
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Bayford, Richard ...
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Damaso, Rui
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Neshatvar, Nazan ...
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Ivanenko, Yevhen
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Rademacher, Thom ...
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Wu, Yu
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show more...
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Seifnaraghi, Nim ...
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Ghali, Lucy
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Patel, Nakul
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Roitt, Ivan
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Nordebo, Sven
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Demosthenous, An ...
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Blekinge Institute of Technology