Atherosclerotic plaque identification by virtual histology intravascular ultrasound in a rabbit abdominal aorta model of vulnerable plaque.
2013
This study aimed to evaluate the utility of virtual histology intravascular ultrasound (VH-IVUS) for recognizing vulnerable plaque compared to histological pathological analysis. Four-month-old New Zealand rabbits (n = 16) were randomly divided into two groups: one fed a high-fat diet and subjected to balloon injury (experimental, n = 10) and one fed a high-fat diet alone (control, n = 6). Blood lipid profiles of overnight-fasted rabbits were measured at week 2 (beginning of study) and week 12 (end of study). At week 12, experimental group rabbits underwent IVUS under anaesthesia. Rabbits were sacrificed and a 5-cm segment of the abdominal aorta was removed. Arterial sections were subjected to pathological and immunohistochemical analyses. Serum lipid levels increased in all rabbits fed with high-fat diet, with low-density lipid cholesterol (LDL-C) levels increasing the most. Levels of six biomarkers (high sensitivity C-reactive protein, matrix metalloproteinase-3, interleukin [IL]-1, IL-10, tumour necros...
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