What question did this study set out to answer?

To elucidate the pathway and cellular mechanisms of macromolecular transport across arterial and venous endothelium during cell turnover.

March 1, 1990Arteriosclerosis An Official Journal of the American Heart Association IncOpen Access

Macromolecular transport across arterial and venous endothelium in rats. Studies with Evans blue-albumin and horseradish peroxidase.

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To elucidate the pathway and cellular mechanisms of macromolecular transport across arterial and venous endothelium during cell turnover.
Administered Evans blue-albumin (EBA) or horseradish peroxidase (HRP) intravenously into male Sprague-Dawley rats followed by systemic perfusion-fixation.
Evaluated en face preparations of the aorta and vena cava using fluorescence microscopy, enzyme histochemistry, and silver nitrate staining to visualize cell boundaries, dead cells, and mitotic cells.
Dividing arterial endothelial cells consistently showed junctional leakage to both albumin and HRP, forming leaky spots that clustered near branch orifices and expanded over time.
Arterial macromolecular leakage localized predominantly to mitotic cells, dead cells, and stigmata, whereas venous leakage was more rapid, diffuse, and primarily linked to dead cells.

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Implication

Animal study demonstrates enhanced macromolecular leakage at dividing arterial endothelial cells in rats, suggesting a cellular mechanism for atherosclerosis localization.

Cite This Study

Chuang et al. (1990) studied this question.

synapsesocial.com/papers/6a1e378e7565d226d4407162 https://doi.org/10.1161/01.atv.10.2.188

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Implication

Animal study demonstrates enhanced macromolecular leakage at dividing arterial endothelial cells in rats, suggesting a cellular mechanism for atherosclerosis localization.

Macromolecular transport across arterial and venous endothelium in rats. Studies with Evans blue-albumin and horseradish peroxidase.

Key Points

Discussion

Implication

Cite This Study

Macromolecular transport across arterial and venous endothelium in rats. Studies with Evans blue-albumin and horseradish peroxidase.

Key Points

Discussion

Implication

Cite This Study

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