Abstract
Members of subclass Elasmobranchii possess cartilage skeletons; the centra of many species are mineralized with a bioapatite, but virtually nothing is known about the mineral's organization. This study employed high-energy, small-angle X-ray scattering (SAXS) and wide-angle X-ray scattering (WAXS, i.e. X-ray diffraction) to investigate the bioapatite crystallography within blocks cut from centra of four species (two carcharhiniform families, one lamniform family and 1-ID of the Advanced Photon Source). All species' crystallographic quantities closely matched and indicated a bioapatite closely related to that in bone. The centra's lattice parameters a and c were somewhat smaller and somewhat larger, respectively, than in bone. Nanocrystallite sizes (WAXS peak widths) in shark centra were larger than typical of bone, and little microstrain was observed. Compared with bone, shark centra exhibited SAXS D-period peaks with larger D magnitudes, and D-period arcs with narrower azimuthal widths. The shark mineral phase, therefore, is closely related to that in bone but does possess real differences which probably affect mechanical property and which are worth further study.
Original language | English (US) |
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Article number | 20220373 |
Journal | Journal of the Royal Society Interface |
Volume | 19 |
Issue number | 194 |
DOIs | |
State | Published - Sep 21 2022 |
Funding
Aside from the contracts mentioned in the Acknowledgements, this research did not receive any specific grant from funding agencies in the public, commercial or not-for-profit sectors. Argonne National Laboratory's work was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under contract DE-AC02-06CH11357. Acknowledgements This research used resources of the Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science User Facility, operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357.
Keywords
- X-ray diffraction
- centrum
- mineralized tissue
- shark
- small-angle X-ray scattering
- wide-angle X-ray scattering
ASJC Scopus subject areas
- Biotechnology
- Biophysics
- Bioengineering
- Biomaterials
- Biochemistry
- Biomedical Engineering
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Supplemental Video 3 from Bioapatite in shark centra studied by wide-angle and by small-angle X-ray scattering
Park, J. S. (Creator), Almer, J. D. (Creator), James, K. C. (Creator), Natanson, L. J. (Creator) & Stock, S. R. (Creator), The Royal Society, 2022
DOI: 10.6084/m9.figshare.21068296, https://rs.figshare.com/articles/media/Supplemental_Video_3_from_Bioapatite_in_shark_centra_studied_by_wide-angle_and_by_small-angle_X-ray_scattering/21068296
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Supplemental Video 1 from Bioapatite in shark centra studied by wide-angle and by small-angle X-ray scattering
Park, J. S. (Creator), Almer, J. D. (Creator), James, K. C. (Creator), Natanson, L. J. (Creator) & Stock, S. R. (Creator), The Royal Society, 2022
DOI: 10.6084/m9.figshare.21068299, https://rs.figshare.com/articles/media/Supplemental_Video_1_from_Bioapatite_in_shark_centra_studied_by_wide-angle_and_by_small-angle_X-ray_scattering/21068299
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Supplementary material from "Bioapatite in shark centra studied by wide-angle and by small-angle X-ray scattering"
Park, J. S. (Creator), Almer, J. D. (Creator), James, K. C. (Creator), Natanson, L. J. (Creator) & Stock, S. R. (Creator), The Royal Society, 2022
DOI: 10.6084/m9.figshare.c.6189313, https://rs.figshare.com/collections/Supplementary_material_from_Bioapatite_in_shark_centra_studied_by_wide-angle_and_by_small-angle_X-ray_scattering_/6189313
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