Abstract
Objective
The present study aims to investigate early morphological and mineral density changes in bone tissues of Swiss albino mice, one month after the intravenous treatment of thorium [thorium nitrate (1 mg/100 µl); 40 mg/Kg)].
Methods
Synchrotron X-ray micro-tomographic imaging along with detailed quantitative analysis was applied to visualize and quantify morphological and mineral density changes in proximal and distal epiphysis regions of mice femur bone. Serum ALP analysis was done to assess the mechanisms of thorium-induced bone parameter changes.
Results
2D and 3D SR-µCT images are shown to depict morphological changes due to Th. Analysis of calibrated SR-µCT images shows the changes in trabecular bone thickness, volume fractions and connectivity and bone mineral density. The measured level of serum ALP showed a decrease in ALP level in thorium-treated mice.
Conclusions
Our study provides novel insights about the effect of thorium on mice bone tissues morphology and mineral density which may have significant implications in the study of mechanism of thorium interaction with bone tissues. The study also suggests the usefulness of SR-µCT technique for the characterization of heavy metal toxicity-induced structure and mineral density changes in bone samples.
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Data availability
The data that support the findings of this study are available from the corresponding author, [AKA] upon reasonable request.
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Acknowledgements
The authors acknowledge Dr. S.M. Yusuf, Director Physics Group, & Dr. L. M. Pant Head, Technical Physics Division, for his support and encouragement in beamline development and utilization activities of imaging beamline. AKA acknowledges the support of Dr. Mayank Shukla for development activities of imaging beamline. Authors also acknowledge the RRCAT, Indore, particularly Indus synchrotron operation division for providing the beam time for the experiments. This project did not receive any specific grant from funding agencies
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Ashish K. Agrawal, Rakhee Yadav, Balwant Singh, Manjoor Ali, Amit Kumar, Yogesh Kashyap, and Badri N. Pandey declare that we have no conflict of interest.
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All the experiments were adhered to the guidelines of the Institutional Animal Ethics Committee of BARC regarding the experimental use of animals.
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Agrawal, A.K., Yadav, R., Singh, B. et al. Study of thorium-induced micro-structural changes in mice femoral bone using SR-µCT. Toxicol. Environ. Health Sci. 15, 399–410 (2023). https://doi.org/10.1007/s13530-023-00191-8
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DOI: https://doi.org/10.1007/s13530-023-00191-8