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The endothelium (pl.: endothelia) is a single layer of squamous endothelial cells that line the interior surface of blood vessels and lymphatic vessels. [1] The endothelium forms an interface between circulating blood or lymph in the lumen and the rest of the vessel wall.
These effects result from coagulation, which is normally prevented in the vascular endothelium by expression of antithrombotic factors on its surface. Sepsis, which causes disruption and apoptosis of endothelial cells results in the endothelium switching to a procoagulant phenotype. This promotes platelet adhesion and aggregation.
Endothelial cells accomplish these feats by using depolarization to alter their structural strength. When an endothelial cell undergoes depolarization, the result is a marked decrease in the rigidity and structural strength of the cell by altering the network of fibers that provide these cells with their structural support.
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Endothelial activation is a proinflammatory and procoagulant state of the endothelial cells lining the lumen of blood vessels. [1] It is most characterized by an increase in interactions with white blood cells (leukocytes), and it is associated with the early states of atherosclerosis and sepsis , among others. [ 2 ]
The lymphatic endothelium refers to a specialized subset of endothelial cells located in the sinus systems of draining lymph nodes.Specifically, these endothelial cells line the branched sinus systems formed by afferent lymphatic vessels, forming a single-cell layer which functions in a variety of critical physiological processes.
President-elect Donald Trump's vow to raise tariffs could have Americans paying more for goods, from toys to auto parts, experts say.
The corneal endothelium is a single layer of endothelial cells on the inner surface of the cornea. It faces the chamber formed between the cornea and the iris. The corneal endothelium are specialized, flattened, mitochondria-rich cells that line the posterior surface of the cornea and face the anterior chamber of the eye. The corneal ...