Cited by 6Occupational and environmental lung diseasesX-ray Spectroscopy and Fluorescence AnalysisAdvanced X-ray Imaging Techniques

Chemo-physical properties of asbestos bodies in human lung tissues studied at the nano-scale by non-invasive, label free X-ray imaging and spectroscopic techniques

Open access
Bardelli, Fabrizio, Brun, Francesco, De Panfilis, Simone, Cloetens, Peter, Capella, Silvana, Belluso, Elena, Bellis, Donata, Di Napoli, Arianna +1 more·2021·Toxicology Letters

Abstract

In the lungs, asbestos develops an Fe-rich coating (Asbestos Body, AB) that becomes the actual interface between the foreign fibers and the host organism. Conventional approaches to study ABs require an invasive sample preparation that can alter them. In this work, a novel combination of x-ray tomography and spectroscopy allowed studying unaltered lung tissue samples with chrysotile and crocidolite asbestos. The thickness and mass density maps of the ABs obtained by x-ray tomography were used to derive a truly quantitative elemental analysis from scanning x-ray fluorescence spectroscopy data. The average mass density of the ABs is compatible with that of highly loaded ferritin, or hemosiderin. The composition of all ABs analyzed was similar, with only minor differences in the relative elemental fractions. Silicon concentration decreased in the core-to-rim direction, indicating a possible partial dissolution of the inner fiber. The Fe content in the ABs was higher than that possibly contained in chrysotile and crocidolite. This finding opens two opposite scenarios, the first with Fe coming from the fiber bulk and concentrating on the surface as long as the fiber dissolves, the second where the Fe that takes part to the formation of the AB originates from the host organism Fe-pool.

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Crossref · 10.1016/j.toxlet.2021.05.002

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96 of 96 references verified0 citation errors · 0 not checkable

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  • Iron in the coat of asbestos bodies does not appear to directly participate in the generation of reactive oxygen species.

    “Iron in the coat of asbestos bodies does not appear to directly participate in the generation of reactive oxygen species [100].”

    From Asbestos and Iron (2023) · cites this paper as [100]

    The Introduction (page not provided) says that experiments found asbestos bodies induce free-radical generation and that iron in their coating is catalytically active. That is contrary to the claim that coating iron does not appear to participate directly in reactive-oxygen-species generation. (LLM, conf=0.85)

    Checked by a reasoning model — may be wrong.

    Experimental — accuracy not yet measured
  • Chrysotile asbestos bodies occur but account for a very small number of asbestos bodies (usually less than 1 to 3% with a mean of 0.14%).

    “Chrysotile asbestos bodies do occur but account for a very small number of asbestos bodies (usually less than 1 to 3% with a mean of 0.14%) [100,101].”

    From Asbestos and Iron (2023) · cites this paper as [100]

    The discussion (journal pre-proof; page unavailable) reports that 2% of 600 asbestos bodies had chrysotile cores, supporting the claim that chrysotile bodies occur but are uncommon. It also reports a 0.14% average for the proportion of chrysotile fibers that form asbestos bodies—not the proportion of all asbestos bodies that are chrysotile—and does not establish the stated usual range of less than 1–3%. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • It is proposed that the coats on these other particles/fibers reflect a disruption in cell iron homeostasis comparable to that following exposure to asbestos and result from the same process.

    “It is proposed that the coats on these other particles/fibers reflect a disruption in cell iron homeostasis comparable to that following exposure to asbestos and result from the same process [100].”

    From Asbestos and Iron (2023) · cites this paper as [100]

    The Introduction (page unavailable) describes an iron-rich coat forming around asbestos fibers after frustrated phagocytosis, and the discussion (page unavailable) suggests a common formation mechanism across the asbestos fiber types studied. It does not establish that coats on other, non-asbestos particles or fibers reflect comparable disruption of cellular iron homeostasis or arise by the same process; the discussion says the iron's source remains unresolved. (LLM, conf=0.82)

    Experimental — accuracy not yet measured
  • With the exception of silicon, all elements appear to co-localize to the coat on the asbestos body.

    “With the exception of silicon, all elements appear to co-localize to the coat on the asbestos body [100].”

    From Asbestos and Iron (2023) · cites this paper as [100]

  • An analysis of their coat revealed the same elements in all asbestos bodies, with only minor differences in the relative amounts of the elements.

    “An analysis of their coat revealed the same elements in all asbestos bodies, with only minor differences in the relative amounts of the elements [100].”

    From Asbestos and Iron (2023) · cites this paper as [100]

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Authors
Bardelli, F., Brun, F., De Panfilis, S., Cloetens, P., Capella, S., Belluso, E., Bellis, D., Di Napoli, A., & Cedola, A.
Affiliations
  • Istituto di Nanotecnologia (IT)
  • University of Trieste (IT)
  • European Synchrotron Radiation Facility (FR)
  • University of Turin (IT)
  • Ospedale degli Infermi (IT)
Corresponding author
Bardelli, Fabrizio
Venue
Toxicology Letters
Publisher
Elsevier BV
Published
2021-09
Volume
348
Pages
18-27
ISSN
0378-4274 (ISSN-L)
OpenAlex
W3164946435
Cited by
6
References
99
Citations by year
2025: 1 · 2023: 2 · 2022: 2 · 2021: 1
FWCI
0.81
Type
journal article
Language
en
Open access
Locations
  • Toxicology Letters (publishedVersion)
  • PubMed (publishedVersion)
  • ArTS Archivio della ricerca di Trieste (University of Trieste https://www.units.it/) (submittedVersion, cc-by-nc-nd)
  • IRIS Research product catalog (Sapienza University of Rome) (submittedVersion)
  • Institutional Research Information System University of Turin (University of Turin) (submittedVersion)
Funders
Horizon 2020 Marie Skłodowska-Curie Actions
Topics
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Occupational and environmental lung diseases
  • Physical Sciences › Physics and Astronomy › Radiation › X-ray Spectroscopy and Fluorescence Analysis
  • Physical Sciences › Physics and Astronomy › Radiation › Advanced X-ray Imaging Techniques
Keywords
asbestos bodies, chrysotile, crocidolite, lung tissue, ferritin, hemosiderin, fiber dissolution, silicon concentration, mass density, elemental composition, X-ray tomography
MeSH terms
Aged, 80 and over, Asbestos, Asbestosis, Female, Humans, Lung, Male, Spectrometry, Fluorescence, Tomography, X-Ray

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