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- W2006014797 abstract "In this study, we demonstrate the application of optical coherence tomography (OCT) as a contactless imaging technique to analyze vasodynamics in small blood vessels in vivo. The transluminal OCT imaging of vessels avoids micro traumata in the endothelium and circumvents surgical intervention. It can be performed in the intact perfused vessel and provides a new method to measure vascular function and dynamics in vivo. The resolution of 10 mum and the velocity of image acquisition are adequate to detect differences in the inner diameter, the maximal velocity, or the time to half-maximal diameter change of small vessels. We applied this new technology to study the vascular dynamics in small vessels of 6- and 20-week-old C57BL/6 mice in vivo. In addition, we determined by this technique the impact of a high-fat diet for 14 weeks on vascular function in 20-week-old animals. The diameter of the saphenous artery was increased under resting conditions, after vasoconstriction and after vasodilatation in 20-week-old animals on normal chow and high-fat diet, compared to 6-week-old animals. High-fat diet caused a significantly impaired vasoconstriction in the saphenous artery. The maximal velocity of diameter changes of the saphenous artery was determined by time-resolved OCT imaging. A significant reduction of this parameter was found during vasoconstriction in 20-week-old mice on high-fat diet, compared to 6-week-old animals. In conclusion, transluminal optical coherence tomography imaging is a novel and useful technique to analyze the impaired vasodynamics of small arteries in response to high-fat diet in vivo." @default.
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- W2006014797 date "2009-03-12" @default.
- W2006014797 modified "2023-09-27" @default.
- W2006014797 title "Analysis of Murine Vascular Function In Vivo by Optical Coherence Tomography in Response to High-fat Diet" @default.
- W2006014797 doi "https://doi.org/10.1055/s-0029-1202866" @default.
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