Journal
MICROSCOPY RESEARCH AND TECHNIQUE
Volume 72, Issue 9, Pages 690-701Publisher
WILEY
DOI: 10.1002/jemt.20720
Keywords
mouse; polyurethane; vascular corrosion cast (VCC); vascular contrast perfusion (VCP); barium sulfate; synchrotron radiation; morphometry
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Funding
- Swiss National Science Foundation through the SNF Professorship in Bioengineering [FP 620-58097.99, PP-104317/1.]
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Recent evidence suggests a close functional relationship between osteogenesis and angiogenesis as well as between bone remodeling and bone vascularization. Consequently, there is a need for visual inspection and quantitative analysis of the bone vasculature. We therefore adapted and implemented two different vascular corrosion casting (VCC) protocols using a polyurethane-based casting resin in mice for a true three-dimensional (M), direct, and simultaneous measurement of bone tissue and vascular morphology by micro-computed tomography (mu CT). For assessment of vascular replicas at the level of capillaries, a vascular contrast perfusion (VCP) protocol was devised using a contrast modality based on a barium sulfate suspension in conjunction with synchrotron radiation (SR) mu CT. The vascular morphology quantified using the VCP protocol was compared quantitatively with the results of a previously established method, where the vascular network of cortical bone was derived indirectly from cortical porosity. The presented VCC and VCP protocols have the potential of serving as a valuable method for concomitant 3D quantitative morphometry of the bone tissue and its vasculature. Microsc. Res. Tech. 72:690-701, 2009. (C) 2009 Wiley-Liss, Inc.
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