Journalartikel

Jahr der Veröffentlichung: 2013

Seiten: 20130332-

Zeitschrift: Journal of the Royal Society Interface

Bandnummer: 10

Heftnummer: 86

ISSN: 1742-5662

Open Access Status: Green

DOI Link: https://doi.org/10.1098/rsif.2013.0332

Verlag: The Royal Society

Abstract: 
Time-of-flight secondary ion mass spectrometry (ToF-SIMS) is a well-established technique in material sciences but has not yet been widely explored for implementation in life sciences. Here, we demonstrate the applicability and advantages of ToF-SIMS analysis for the study of minerals and biomolecules in osseous tissue. The locally resolved analysis of fragment ions deriving from the sample surface enables imaging and differentiation of bone tissue and facilitates histology on non-stained cross sections. In a rat model, bilateral ovariectomy combined with either a multi-deficiency diet or steroid treatment was carried out to create osteoporotic conditions. We focused our study on the Ca content of the mineralized tissue and monitored its decline. Calcium mass images of cross sections show the progressive degenerative changes in the bone. We observed a decreased Ca concentration in the edge region of the trabeculae and a decline in the Ca/P ratio. Additionally, we focused on the non-mineralized matrix and identified fragment ions that are characteristic for the collagen matrix. We observed trabeculae with wide ranges of non-mineralized collagen for the diet group owing to an impaired mineralization process. Here, the advantage of coeval monitoring of collagen and minerals indicated an osteomalacic model rather than an osteoporotic one.

Harvard-Zitierstil: Henss, A., Rohnke, M., El Khassawna, T., Govindarajan, P., Schlewitz, G., Heiss, C., et al. (2013) Applicability of ToF-SIMS for monitoring compositional changes in bone in a long-term animal model, Journal of the Royal Society Interface, 10(86), p. 20130332. https://doi.org/10.1098/rsif.2013.0332

APA-Zitierstil: Henss, A., Rohnke, M., El Khassawna, T., Govindarajan, P., Schlewitz, G., Heiss, C., & Janek, J. (2013). Applicability of ToF-SIMS for monitoring compositional changes in bone in a long-term animal model. Journal of the Royal Society Interface. 10(86), 20130332. https://doi.org/10.1098/rsif.2013.0332