Cutting-edge microangio-CT: new dimensions in vascular imaging and kidney morphometry.

Hlushchuk, Ruslan; Zubler, Cédric; Barré, Sébastien; Correa Shokiche, Carlos Enrique; Schaad, Laura; Röthlisberger, Raphael; Wnuk, Monika L; Daniel, Christoph; Khoma, Oleksiy-Zakhar; Tschanz, Stefan A.; Reyes, Mauricio; Djonov, Valentin (2018). Cutting-edge microangio-CT: new dimensions in vascular imaging and kidney morphometry. American journal of physiology - renal physiology, 314(3), F493-F499. American Physiological Society 10.1152/ajprenal.00099.2017

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In the last decades the contrast-enhanced microCT-imaging of whole animal kidney became increasingly important. The visualization was mainly limited to middle-sized vessels. Since modern desktop microCT-scanners provide the necessary detail resolution, we developed an approach for rapid visualization and consistent assessment of kidney vasculature and glomeruli number. This method is based on μAngiofil®, a new polymerizing contrast agent with homogenous X-ray absorption, which provides continuous filling of the complete vasculature and enables correlative imaging approaches. For rapid and reliable kidney morphometry the microangioCT-datasets from GDNF+/- mice and their wildtype littermates were used. The results were obtained much faster compared to the current gold standard, histology-based stereology, and without processing artefacts. The histology-based morphometry was afterwards done on the same kidneys. Both approaches revealed that the GDNF+/- male mice had more than 30% fewer glomeruli. Futhermore, our approach allows defining sites of interest for further histological investigation, i.e., correlative morphology. The polymerized μAngiofil stays in perfused vessels and is auto-fluorescent what greatly facilitates matching of histological sections with microangioCT-data. The presented approach is time-efficient and reliable qualitative and quantitative methodology. Besides glomerular morphometry the microangioCT-data can be used for qualitative and quantitative analysis of the kidney vasculature and correlative morphology.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Pre-clinic Human Medicine > Institute for Surgical Technology & Biomechanics ISTB
04 Faculty of Medicine > Pre-clinic Human Medicine > Institute of Anatomy
09 Interdisciplinary Units > Microscopy Imaging Center MIC

UniBE Contributor:

Hlushchuk, Ruslan; Zubler, Cédric; Barré, Sébastien; Correa Shokiche, Carlos Enrique; Schaad, Laura; Röthlisberger, Raphael; Khoma, Oleksiy-Zakhar; Tschanz, Stefan A.; Reyes, Mauricio and Djonov, Valentin

Subjects:

600 Technology > 610 Medicine & health
500 Science > 570 Life sciences; biology

ISSN:

0363-6127

Publisher:

American Physiological Society

Language:

English

Submitter:

Stefan Andreas Tschanz

Date Deposited:

17 Jan 2018 15:33

Last Modified:

14 Feb 2019 13:49

Publisher DOI:

10.1152/ajprenal.00099.2017

PubMed ID:

29167169

Uncontrolled Keywords:

contrast agent kidney morphometry micro-CT stereology vascular imaging

URI:

https://boris.unibe.ch/id/eprint/108948

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