(n.) The thin epithelium lining the blood vessels, lymphatics, and serous cavities. See Epithelium.
Example Sentences:
(1) Electronmicroscopical investigations have revealed that, under normal conditions, a minor vesicular transfer of intravenously injected peroxidase occurs across the endothelium in segments of arterioles, capillaries and venules, especially in arterioles with a diameter about 15-30 mu.
(2) The vascular endothelium is capable of regulating tissue perfusion by the release of endothelium-derived relaxing factor to modulate vasomotor tone of the resistance vasculature.
(3) Selective removal of endothelium had no effect on BK-induced contraction or the action of the antagonists.
(4) Combined SEM and TEM examination of the endothelium of compressed segments revealed "craters" and "balloons", blebs and vacuoles, swollen mitochondria, dilated granular endoplasmic reticulum, and subendothelial edema.
(5) DNA synthesis by endothelium subsequently increased and within 48 hr new blood vessel formation was detected.
(6) Endothelium-dependent relaxations to acetylcholine and endothelium-independent relaxations to nitric oxide were observed in rings from both strains during contraction with endothelin.
(7) Rings of isolated coronary and femoral arteries (without endothelium) were suspended for isometric tension recording in organ chambers filled with modified Krebs-Ringer bicarbonate solution.
(8) The observations support the idea that the function of pericytes in the choriocapillaris, the major source of nutrition for the retinal photoreceptors, resides in their contractility, and that pericytes do not remove necrotic endothelium during capillary atrophy.
(9) The relaxations in response to a nonreceptor-mediated endothelium-dependent vasodilator, A23187, and an endothelium-independent vasodilator, sodium nitroprusside, were not different between normal and diabetic aortas.
(10) Nitric oxide (NO) is a major component of endothelium-derived relaxing factor (EDRF) the synthesis of which from L-arginine can be inhibited by NG-monomethyl-L-arginine (L-NMMA).
(11) Endothelin-1 (ET-1) is a novel vasoconstricting and cardiotonic peptide that is synthesized by the vascular endothelium.
(12) Hydrostatic occlusion of arteries with 12 kPa (90 mmHg) for 30 sec did not affect endothelial morphology and fibrinolytic activity, but after occlusion for 5 or 20 min the endothelium in both arteries and veins was severely damaged.
(13) From these results, it is concluded that (1) isolated rat common carotid arteries have both H1- and H2-receptors, (2) there are few vasoconstrictory H1-receptors, (3) both H1- and H2-receptors mediate only vasodilation but not vasoconstriction, and (4) EDRF from the endothelium might participate in histamine-induced vasodilation via not only H1- but also H2-receptors.
(14) Endothelium is indisputably a highly specialized tissue which mediates and controls many physiological and pathological processes.
(15) The endothelium of bone marrow sinuses is a continuous layer which is selective in its cellular transport.
(16) Compared to normal aorta there was a highly significant increase in proteoglycan in lipid-containing lesions, which was also associated with the presence of regenerated endothelium.
(17) The involvement of the endothelium and the role of change in membrane potential are evaluated and lead to the conclusion that pressure and flow effects do not depend exclusively on the release of endothelial factors nor the activation of voltage-gated Ca2+ channels.
(18) Vasodilation was not altered significantly by removal of endothelium or by pretreatment with propranolol or indometacin.
(19) Vascular stretch increases the activity of arterial baroreceptors along with the production and release of substances from the endothelium.
(20) Intravenous carbon black or thioflavin S (a fluorescent vital stain for endothelium) were used to demonstrate the distribution of coronary arterial flow in control and damaged myocardium.
Serous
Definition:
(a.) Thin; watery; like serum; as the serous fluids.
(a.) Of or pertaining to serum; as, the serous glands, membranes, layers. See Serum.
Example Sentences:
(1) Ovarian clear cell adenocarcinoma has distinctly different clinical behavior compared to serous carcinoma and should be regarded as an aggressive epithelial histologic type.
(2) The percentage of positive cases was highest in the serous MEE group (81.2%) and decreased in the purulent MEE group (57%), the mucoid MEE group (30%), and the hyperviscous MEE group (13.6%), in that order.
(3) The serous fluid of mice was used as a source of endogenous DNAse I.
(4) Incorporation of [2-14C] sodium acetate into 7-dehydrocholesterol ketoderivative, cholesta-4,7-dien-3-on, was studied in the tissues of the rat stomach secretory and esophageal parts and in the mucous and serous membranes of the small intestine.
(5) Ovarian tumors were noted in all 27 patients, including 2 primary carcinomas and 14 serous cystadenomas.
(6) In the case of a massive serous pleural effusion examination of the ingredients leads to diagnosis.
(7) We examined the immunocytochemical localization of amylase in cryofixed serous acinar cells of gerbil major salivary glands by indirect immunostaining, using anti-gerbil parotid amylase antibody and protein A-gold complex.
(8) However, in human lungs, lysozyme was identified in serous submucosal glands but not in alveolar type II pneumocytes.
(9) The amount of the fluid flowing off the vessels, perfusate penetration into the intestinal lumen and its transudation through the serous membrane were determined.
(10) The terminology of the pericardial sinuses and recesses has been inconsistent, and the authors propose a nomenclature for standardizing the names of the recesses of the serous pericardium.
(11) Flow cytometric analysis of DNA content and ras p21 expression were studied in paraffin-embedded normal ovary (NO, n = 10), serous cystadenoma (SA, n = 11), serous tumors of low malignant potential (LMP, n = 13), and papillary serous cystadenocarcinoma (SCa, n = 7).
(12) Two previously unnamed recesses within the serous pericardium are defined and named, one the inferior aortic recess of the transverse sinus and the other, the right pulmonic recess of the transverse sinus.
(13) In hypertension, all the components are affected in the microcirculatory bed of serous membranes: arterioles, precapillaries, capillaries, postcapillaries, venules, lymph capillaries and postcapillaries.
(14) Serous granules were stained by toluidine blue, or by hematoxylin and eosin (H and E), but showed little or no reaction with periodic acid-Schiff (PAS) or Alcian blue.
(15) Chronic serous otitis media was a frequent finding but deafness was rarely profound.
(16) We created serous retinal detachment in the cat eye by means of photodynamic injury produced by activation of intravascular rose bengal using filtered, focused light (550 nm).
(17) Uterine papillary serous carcinoma (UPSC), FIGO grade 3, nuclear grade 3, and age were the major independent prognostic factors.
(18) A patient with a strongly positive family history underwent a prophylactic oophorectomy and, 5 years later, developed a primary peritoneal papillary serous adenocarcinoma.
(19) Ophthalmoscopic examination disclosed a single, white, elevated mass lesion surrounded by serous retinal detachment located in the upper part of the macula of the right eye.
(20) These cells express serous cell phenotype as reflected by ultrastructure, histochemistry, and lysozyme activity.