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- W2079461983 abstract "Endothelial injuries were induced in the left common iliac arteries (1 mm in diameter) of rats, by the placement of 1 mm Scovell-Lewis microvascular clamps for 5 minutes, to create a lesion in which to quantitate the rate and degree of cellular regeneration. The left (clamp-injured) and right (control) iliac arteries from the 15 rats used in this study were viewed with the electron microscope at 2, 7, and 14 days after clamping, and the clamp sites were analysed morphometrically. At 2 days there was only minimal denudation of the endothelium; most cells were disoriented and showed some signs of traumatic injury. By 7 days there was a completely continuous endothelial lining, but there was also evidence of increased cytoplasmic activity in these cells, as well as a statistically significant simplification in their intercellular junctional morphology. These changes persisted at 14 days after injury, but they were less pronounced. Smooth muscle cells in the media were relatively unaffected by the trauma in the first 2 days after clamping. However, they exhibited a change of phenotype from contractile to synthetic by 7 days after injury. By 14 days most smooth muscle cells had reverted back to the contractile phenotype, with little evidence of residual damage. These studies reveal that the reconstitution and regeneration of the endothelium is very rapid following clamp injury, but that significant residual ultrastructural changes in the interendothelial junctions persist for at least 14 days after injury. These findings indicate that there is potential for subsequent pathological changes in sites of vascular clamp injury. © 1998 Wiley-Liss, Inc. 1998" @default.
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- W2079461983 date "1996-01-01" @default.
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- W2079461983 title "Structural recovery of small arteries following clamp injury: A light and electron microscopic investigation in the rat" @default.
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- W2079461983 doi "https://doi.org/10.1002/(sici)1098-2752(1996)17:12<674::aid-micr4>3.0.co;2-n" @default.
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