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  • Title: Ischemic carotid endothelium. Transmission electron microscopic studies.
    Author: Gertz SD, Forbes MS, Sunaga T, Kawamura J, Rennels ML, Shimamoto T, Nelson E.
    Journal: Arch Pathol Lab Med; 1976 Oct; 100(10):522-6. PubMed ID: 822801.
    Abstract:
    The endothelium of monkey and rabbit common carotid arteries subjected to ischemia was examined by transmission electron microscopy (TEM). The right carotid artery of 24 rhesus monkeys was occluded by proximal and distal placement of removable surgical clips for periods ranging from five minutes to four hours. A single clip was used to occlude the right carotid artery of 15 rabbits for periods ranging from 5 to 30 minutes. With TEM, numerous blebs, intracytoplasmic vacuoles, membranous whorls, and pseudopodia were found in the endothelium of arterial segments subjected to ischemia by double or single clipping for as little as five minutes. Following occlusion of one hour or longer, disruption of interendothelial junctions was also noted. These TEM findings were compared with earlier TEM studies of the response of endothelium to other injurious stimuli and with previous scanning electron microscopic studies in which the same ischemic models were utilized.
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