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The epithelial layer of cells lining the heart and vessels of the circulatory system.



a tissue found in animals and man consisting of specialized cells that line the inner surfaces of blood and lymph vessels, as well as the cavities of the heart. The endothelium is formed from the mesenchyme. It consists of a single layer of closely packed flat cells, which are usually separated from underlying tissues by a basal membrane. The endothelium of lymph vessels has no basal membrane. The cytoplasm of endothelial cells of certain capillaries may have pores that account for the permeability of the capillary wall, as, for example, in the renal glomeruli.

The endothelium of the enlarged capillaries of the blood-forming organs and the endothelium present in the liver, adrenal cortex, and certain other organs has a great capacity for phagocytosis. The endothelial cells of these organs belong to the reticuloendothelial system.

References in periodicals archive ?
[13] in 1996 as a new human endothelial cell-specific molecule.
To reveal the role of endocan in various clinical settings associated with endothelial dysfunction, including endotoxemia, obstructive sleep apnea, and migraine, numerous studies have been performed [24-26].
Corneal endothelial cell loss (CED loss) leads to loss of hexagonality of surrounding cells intended to fill the space.6 With greater loss, the pump mechanism of remaining cells is insufficient to dehydrate cornea and edema ensures (compromised cornea); leading to decreased corneal transparency.
This endothelial abnormality may often develop postcataract surgery corneal oedema.
Therefore, this study aimed to elucidate the levels of miR-19b in EMPs, stimulated by hypoxia, and the roles of miR-19b - wrapped within EMPs - on vascular endothelial cells.
By counting the number of sides of surrounding cells, 100 endothelial cells from each corneal area were evaluated.
Keywords: Corneal endothelial cell density, Intraocular surgery, Pseudoexfoliation syndrome.
(9) Histologically, this lesion is well-circumscribed and it is characterized by a papillary proliferation of endothelial cells forming vascular channels.
The vascular endothelium is a monolayer of endothelial cells forming the inner lining of all blood vessels including arteries, veins and capillaries as well as lymphatic system.
As our earlier studies mentioned [26], a total of 2 x 104 EPCs were isolated and resuspended in 250 [micro]L endothelial basal medium 2 (EBM2).
Endothelial cells lack the capacity to reproduce; any direct or indirect damage to transplanted corneal endothelial cells during or after PKP would lead to the depletion of these cells.