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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 ?
The 126 consecutive eyes with endothelial failure of 120 patients, who had corneal endothelial decompensation and underwent femtosecond-assisted DSAEK using the VisuMax femtosecond laser system in the Department of Ophthalmology, Peking University 3rd Hospital, were included in the study.
Lubna Hussain, Senior Global Product Manager for Primary Cells, Lonza, said: Lonza is committed to supporting the work of scientists and with endothelial cells playing a crucial role in the pathology and treatment of many diseases, we felt it was important to create a centralized portal of materials to assist this research.
Editor's Note: "These findings indicate that the dietary intake of taurine and magnesium may prolong lifespan by facilitating the repair of impaired endothelial functions and thereby prevent the progression of cardiovascular diseases," the authors observe.
However, upon stimulation of endothelial cells by cytokines its concentration is significantly increased.
In the present study we have investigated the changes in the endothelial cell count and cell's polymegathism and pleomorphism after SLT in OAG.
Diabetics show significantly lower corneal endothelial cell count as compared with the normal population5.
In response to various injurious stimuli, vascular endothelial cells express a broad variety of proteins [15] but only few of these have been studied in serum or plasma in patients with chronic liver disease.
The endothelial cell count and central corneal thickness was measured (Using SP3000 P, TOPCON specular microscope with pachymeter on 3 occasions - 1 day prior to surgery, one day after surgery and 4 weeks after surgery.
The purpose of this study was to evaluate whether endothelial MPs produce ROS and to evaluate the potential regulatory role of MP-derived ROS on EC signaling and vascular function.
A decade later Vogt identified drop-like endothelial changes in the cornea, using slit lamp biomicroscopy, which are now termed guttae.